Commit | Line | Data |
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1da177e4 | 1 | /* |
643f12db | 2 | * thinkpad_acpi.c - ThinkPad ACPI Extras |
1da177e4 LT |
3 | * |
4 | * | |
78f81cc4 | 5 | * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net> |
1c762ca4 | 6 | * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br> |
1da177e4 LT |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
a62bc916 HMH |
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
21 | * 02110-1301, USA. | |
78f81cc4 BD |
22 | */ |
23 | ||
b57f7e7b | 24 | #define TPACPI_VERSION "0.23" |
2586d566 | 25 | #define TPACPI_SYSFS_VERSION 0x020300 |
78f81cc4 BD |
26 | |
27 | /* | |
1da177e4 | 28 | * Changelog: |
4b45cc07 HMH |
29 | * 2007-10-20 changelog trimmed down |
30 | * | |
643f12db HMH |
31 | * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to |
32 | * drivers/misc. | |
f9ff43a6 HMH |
33 | * |
34 | * 2006-11-22 0.13 new maintainer | |
35 | * changelog now lives in git commit history, and will | |
36 | * not be updated further in-file. | |
837ca6dd | 37 | * |
78f81cc4 BD |
38 | * 2005-03-17 0.11 support for 600e, 770x |
39 | * thanks to Jamie Lentin <lentinj@dial.pipex.com> | |
4b45cc07 HMH |
40 | * |
41 | * 2005-01-16 0.9 use MODULE_VERSION | |
78f81cc4 BD |
42 | * thanks to Henrik Brix Andersen <brix@gentoo.org> |
43 | * fix parameter passing on module loading | |
44 | * thanks to Rusty Russell <rusty@rustcorp.com.au> | |
45 | * thanks to Jim Radford <radford@blackbean.org> | |
46 | * 2004-11-08 0.8 fix init error case, don't return from a macro | |
47 | * thanks to Chris Wright <chrisw@osdl.org> | |
1da177e4 LT |
48 | */ |
49 | ||
0c78039f HMH |
50 | #include <linux/kernel.h> |
51 | #include <linux/module.h> | |
52 | #include <linux/init.h> | |
53 | #include <linux/types.h> | |
54 | #include <linux/string.h> | |
55 | #include <linux/list.h> | |
56 | #include <linux/mutex.h> | |
73a94d86 | 57 | #include <linux/sched.h> |
0c78039f HMH |
58 | #include <linux/kthread.h> |
59 | #include <linux/freezer.h> | |
60 | #include <linux/delay.h> | |
61 | ||
62 | #include <linux/nvram.h> | |
63 | #include <linux/proc_fs.h> | |
64 | #include <linux/sysfs.h> | |
65 | #include <linux/backlight.h> | |
66 | #include <linux/fb.h> | |
67 | #include <linux/platform_device.h> | |
68 | #include <linux/hwmon.h> | |
69 | #include <linux/hwmon-sysfs.h> | |
70 | #include <linux/input.h> | |
4fa6811b | 71 | #include <linux/leds.h> |
0e74dc26 | 72 | #include <linux/rfkill.h> |
0c78039f HMH |
73 | #include <asm/uaccess.h> |
74 | ||
75 | #include <linux/dmi.h> | |
76 | #include <linux/jiffies.h> | |
77 | #include <linux/workqueue.h> | |
78 | ||
79 | #include <acpi/acpi_drivers.h> | |
0c78039f HMH |
80 | |
81 | #include <linux/pci_ids.h> | |
82 | ||
0c78039f HMH |
83 | |
84 | /* ThinkPad CMOS commands */ | |
85 | #define TP_CMOS_VOLUME_DOWN 0 | |
86 | #define TP_CMOS_VOLUME_UP 1 | |
87 | #define TP_CMOS_VOLUME_MUTE 2 | |
88 | #define TP_CMOS_BRIGHTNESS_UP 4 | |
89 | #define TP_CMOS_BRIGHTNESS_DOWN 5 | |
4fa6811b HMH |
90 | #define TP_CMOS_THINKLIGHT_ON 12 |
91 | #define TP_CMOS_THINKLIGHT_OFF 13 | |
0c78039f HMH |
92 | |
93 | /* NVRAM Addresses */ | |
94 | enum tp_nvram_addr { | |
95 | TP_NVRAM_ADDR_HK2 = 0x57, | |
96 | TP_NVRAM_ADDR_THINKLIGHT = 0x58, | |
97 | TP_NVRAM_ADDR_VIDEO = 0x59, | |
98 | TP_NVRAM_ADDR_BRIGHTNESS = 0x5e, | |
99 | TP_NVRAM_ADDR_MIXER = 0x60, | |
100 | }; | |
101 | ||
102 | /* NVRAM bit masks */ | |
103 | enum { | |
104 | TP_NVRAM_MASK_HKT_THINKPAD = 0x08, | |
105 | TP_NVRAM_MASK_HKT_ZOOM = 0x20, | |
106 | TP_NVRAM_MASK_HKT_DISPLAY = 0x40, | |
107 | TP_NVRAM_MASK_HKT_HIBERNATE = 0x80, | |
108 | TP_NVRAM_MASK_THINKLIGHT = 0x10, | |
109 | TP_NVRAM_MASK_HKT_DISPEXPND = 0x30, | |
110 | TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20, | |
111 | TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f, | |
112 | TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0, | |
113 | TP_NVRAM_MASK_MUTE = 0x40, | |
114 | TP_NVRAM_MASK_HKT_VOLUME = 0x80, | |
115 | TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f, | |
116 | TP_NVRAM_POS_LEVEL_VOLUME = 0, | |
117 | }; | |
118 | ||
b21a15f6 | 119 | /* ACPI HIDs */ |
e0c7dfe7 | 120 | #define TPACPI_ACPI_HKEY_HID "IBM0068" |
b21a15f6 HMH |
121 | |
122 | /* Input IDs */ | |
123 | #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */ | |
124 | #define TPACPI_HKEY_INPUT_VERSION 0x4101 | |
125 | ||
153f8220 HMH |
126 | /* ACPI \WGSV commands */ |
127 | enum { | |
128 | TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */ | |
129 | TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */ | |
130 | TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */ | |
131 | TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */ | |
132 | }; | |
133 | ||
134 | /* TP_ACPI_WGSV_GET_STATE bits */ | |
135 | enum { | |
136 | TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */ | |
137 | TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */ | |
138 | TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */ | |
139 | TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */ | |
140 | TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */ | |
141 | TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */ | |
142 | TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */ | |
143 | TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */ | |
144 | TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */ | |
145 | TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */ | |
146 | }; | |
b21a15f6 HMH |
147 | |
148 | /**************************************************************************** | |
149 | * Main driver | |
150 | */ | |
151 | ||
e0c7dfe7 HMH |
152 | #define TPACPI_NAME "thinkpad" |
153 | #define TPACPI_DESC "ThinkPad ACPI Extras" | |
154 | #define TPACPI_FILE TPACPI_NAME "_acpi" | |
155 | #define TPACPI_URL "http://ibm-acpi.sf.net/" | |
156 | #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net" | |
b21a15f6 | 157 | |
e0c7dfe7 HMH |
158 | #define TPACPI_PROC_DIR "ibm" |
159 | #define TPACPI_ACPI_EVENT_PREFIX "ibm" | |
160 | #define TPACPI_DRVR_NAME TPACPI_FILE | |
95e57ab2 | 161 | #define TPACPI_DRVR_SHORTNAME "tpacpi" |
e0c7dfe7 | 162 | #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon" |
b21a15f6 | 163 | |
95e57ab2 | 164 | #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd" |
e0e3c061 | 165 | #define TPACPI_WORKQUEUE_NAME "ktpacpid" |
95e57ab2 | 166 | |
e0c7dfe7 | 167 | #define TPACPI_MAX_ACPI_ARGS 3 |
b21a15f6 | 168 | |
7ff8d62f | 169 | /* printk headers */ |
e0c7dfe7 | 170 | #define TPACPI_LOG TPACPI_FILE ": " |
7ff8d62f HMH |
171 | #define TPACPI_EMERG KERN_EMERG TPACPI_LOG |
172 | #define TPACPI_ALERT KERN_ALERT TPACPI_LOG | |
173 | #define TPACPI_CRIT KERN_CRIT TPACPI_LOG | |
174 | #define TPACPI_ERR KERN_ERR TPACPI_LOG | |
175 | #define TPACPI_WARN KERN_WARNING TPACPI_LOG | |
176 | #define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG | |
177 | #define TPACPI_INFO KERN_INFO TPACPI_LOG | |
178 | #define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG | |
179 | ||
180 | /* Debugging printk groups */ | |
0c78039f | 181 | #define TPACPI_DBG_ALL 0xffff |
73a94d86 | 182 | #define TPACPI_DBG_DISCLOSETASK 0x8000 |
0c78039f HMH |
183 | #define TPACPI_DBG_INIT 0x0001 |
184 | #define TPACPI_DBG_EXIT 0x0002 | |
bee4cd9b | 185 | #define TPACPI_DBG_RFKILL 0x0004 |
56e2c200 | 186 | #define TPACPI_DBG_HKEY 0x0008 |
74a60c0f | 187 | #define TPACPI_DBG_FAN 0x0010 |
0e501834 | 188 | #define TPACPI_DBG_BRGHT 0x0020 |
0c78039f | 189 | |
35ff8b9f HMH |
190 | #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off") |
191 | #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled") | |
192 | #define strlencmp(a, b) (strncmp((a), (b), strlen(b))) | |
0c78039f | 193 | |
0c78039f HMH |
194 | |
195 | /**************************************************************************** | |
b21a15f6 | 196 | * Driver-wide structs and misc. variables |
0c78039f HMH |
197 | */ |
198 | ||
199 | struct ibm_struct; | |
200 | ||
201 | struct tp_acpi_drv_struct { | |
202 | const struct acpi_device_id *hid; | |
203 | struct acpi_driver *driver; | |
204 | ||
205 | void (*notify) (struct ibm_struct *, u32); | |
206 | acpi_handle *handle; | |
207 | u32 type; | |
208 | struct acpi_device *device; | |
209 | }; | |
210 | ||
211 | struct ibm_struct { | |
212 | char *name; | |
213 | ||
214 | int (*read) (char *); | |
215 | int (*write) (char *); | |
216 | void (*exit) (void); | |
217 | void (*resume) (void); | |
083f1760 | 218 | void (*suspend) (pm_message_t state); |
90d9d3c7 | 219 | void (*shutdown) (void); |
0c78039f HMH |
220 | |
221 | struct list_head all_drivers; | |
222 | ||
223 | struct tp_acpi_drv_struct *acpi; | |
224 | ||
225 | struct { | |
226 | u8 acpi_driver_registered:1; | |
227 | u8 acpi_notify_installed:1; | |
228 | u8 proc_created:1; | |
229 | u8 init_called:1; | |
230 | u8 experimental:1; | |
231 | } flags; | |
232 | }; | |
233 | ||
234 | struct ibm_init_struct { | |
235 | char param[32]; | |
236 | ||
237 | int (*init) (struct ibm_init_struct *); | |
238 | struct ibm_struct *data; | |
239 | }; | |
240 | ||
241 | static struct { | |
242 | #ifdef CONFIG_THINKPAD_ACPI_BAY | |
243 | u32 bay_status:1; | |
244 | u32 bay_eject:1; | |
245 | u32 bay_status2:1; | |
246 | u32 bay_eject2:1; | |
247 | #endif | |
248 | u32 bluetooth:1; | |
249 | u32 hotkey:1; | |
250 | u32 hotkey_mask:1; | |
251 | u32 hotkey_wlsw:1; | |
6c231bd5 | 252 | u32 hotkey_tablet:1; |
0c78039f HMH |
253 | u32 light:1; |
254 | u32 light_status:1; | |
255 | u32 bright_16levels:1; | |
b5972796 | 256 | u32 bright_acpimode:1; |
0c78039f | 257 | u32 wan:1; |
0045c0aa | 258 | u32 uwb:1; |
0c78039f HMH |
259 | u32 fan_ctrl_status_undef:1; |
260 | u32 input_device_registered:1; | |
261 | u32 platform_drv_registered:1; | |
262 | u32 platform_drv_attrs_registered:1; | |
263 | u32 sensors_pdrv_registered:1; | |
264 | u32 sensors_pdrv_attrs_registered:1; | |
265 | u32 sensors_pdev_attrs_registered:1; | |
266 | u32 hotkey_poll_active:1; | |
267 | } tp_features; | |
268 | ||
92889022 HMH |
269 | static struct { |
270 | u16 hotkey_mask_ff:1; | |
271 | } tp_warned; | |
272 | ||
0c78039f HMH |
273 | struct thinkpad_id_data { |
274 | unsigned int vendor; /* ThinkPad vendor: | |
275 | * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */ | |
276 | ||
277 | char *bios_version_str; /* Something like 1ZET51WW (1.03z) */ | |
278 | char *ec_version_str; /* Something like 1ZHT51WW-1.04a */ | |
279 | ||
280 | u16 bios_model; /* Big Endian, TP-1Y = 0x5931, 0 = unknown */ | |
281 | u16 ec_model; | |
282 | ||
8c74adbc HMH |
283 | char *model_str; /* ThinkPad T43 */ |
284 | char *nummodel_str; /* 9384A9C for a 9384-A9C model */ | |
0c78039f | 285 | }; |
0c78039f HMH |
286 | static struct thinkpad_id_data thinkpad_id; |
287 | ||
8fef502e HMH |
288 | static enum { |
289 | TPACPI_LIFE_INIT = 0, | |
290 | TPACPI_LIFE_RUNNING, | |
291 | TPACPI_LIFE_EXITING, | |
292 | } tpacpi_lifecycle; | |
293 | ||
b21a15f6 HMH |
294 | static int experimental; |
295 | static u32 dbg_level; | |
296 | ||
e0e3c061 HMH |
297 | static struct workqueue_struct *tpacpi_wq; |
298 | ||
75bd3bf2 HMH |
299 | enum led_status_t { |
300 | TPACPI_LED_OFF = 0, | |
301 | TPACPI_LED_ON, | |
302 | TPACPI_LED_BLINK, | |
303 | }; | |
304 | ||
4fa6811b HMH |
305 | /* Special LED class that can defer work */ |
306 | struct tpacpi_led_classdev { | |
307 | struct led_classdev led_classdev; | |
308 | struct work_struct work; | |
75bd3bf2 | 309 | enum led_status_t new_state; |
af116101 | 310 | unsigned int led; |
4fa6811b HMH |
311 | }; |
312 | ||
a73f3091 HMH |
313 | #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
314 | static int dbg_wlswemul; | |
315 | static int tpacpi_wlsw_emulstate; | |
316 | static int dbg_bluetoothemul; | |
317 | static int tpacpi_bluetooth_emulstate; | |
318 | static int dbg_wwanemul; | |
319 | static int tpacpi_wwan_emulstate; | |
0045c0aa HMH |
320 | static int dbg_uwbemul; |
321 | static int tpacpi_uwb_emulstate; | |
a73f3091 HMH |
322 | #endif |
323 | ||
324 | ||
3dcc2c3b HMH |
325 | /************************************************************************* |
326 | * Debugging helpers | |
327 | */ | |
328 | ||
329 | #define dbg_printk(a_dbg_level, format, arg...) \ | |
330 | do { if (dbg_level & (a_dbg_level)) \ | |
331 | printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \ | |
332 | } while (0) | |
333 | ||
334 | #ifdef CONFIG_THINKPAD_ACPI_DEBUG | |
335 | #define vdbg_printk dbg_printk | |
336 | static const char *str_supported(int is_supported); | |
337 | #else | |
338 | #define vdbg_printk(a_dbg_level, format, arg...) \ | |
339 | do { } while (0) | |
340 | #endif | |
341 | ||
73a94d86 HMH |
342 | static void tpacpi_log_usertask(const char * const what) |
343 | { | |
344 | printk(TPACPI_DEBUG "%s: access by process with PID %d\n", | |
345 | what, task_tgid_vnr(current)); | |
346 | } | |
347 | ||
348 | #define tpacpi_disclose_usertask(what, format, arg...) \ | |
349 | do { \ | |
350 | if (unlikely( \ | |
351 | (dbg_level & TPACPI_DBG_DISCLOSETASK) && \ | |
352 | (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \ | |
353 | printk(TPACPI_DEBUG "%s: PID %d: " format, \ | |
354 | what, task_tgid_vnr(current), ## arg); \ | |
355 | } \ | |
356 | } while (0) | |
3dcc2c3b | 357 | |
56b6aeb0 HMH |
358 | /**************************************************************************** |
359 | **************************************************************************** | |
360 | * | |
361 | * ACPI Helpers and device model | |
362 | * | |
363 | **************************************************************************** | |
364 | ****************************************************************************/ | |
365 | ||
366 | /************************************************************************* | |
367 | * ACPI basic handles | |
368 | */ | |
1da177e4 | 369 | |
94954cc6 | 370 | static acpi_handle root_handle; |
1da177e4 | 371 | |
e0c7dfe7 | 372 | #define TPACPI_HANDLE(object, parent, paths...) \ |
1da177e4 LT |
373 | static acpi_handle object##_handle; \ |
374 | static acpi_handle *object##_parent = &parent##_handle; \ | |
78f81cc4 | 375 | static char *object##_path; \ |
1da177e4 LT |
376 | static char *object##_paths[] = { paths } |
377 | ||
e0c7dfe7 | 378 | TPACPI_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */ |
78f81cc4 BD |
379 | "\\_SB.PCI.ISA.EC", /* 570 */ |
380 | "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */ | |
381 | "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */ | |
382 | "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */ | |
383 | "\\_SB.PCI0.ICH3.EC0", /* R31 */ | |
384 | "\\_SB.PCI0.LPC.EC", /* all others */ | |
56b6aeb0 | 385 | ); |
78f81cc4 | 386 | |
e0c7dfe7 HMH |
387 | TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */ |
388 | TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */ | |
78f81cc4 | 389 | |
35ff8b9f HMH |
390 | TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */ |
391 | /* T4x, X31, X40 */ | |
78f81cc4 BD |
392 | "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ |
393 | "\\CMS", /* R40, R40e */ | |
56b6aeb0 | 394 | ); /* all others */ |
78f81cc4 | 395 | |
e0c7dfe7 | 396 | TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ |
78f81cc4 BD |
397 | "^HKEY", /* R30, R31 */ |
398 | "HKEY", /* all others */ | |
56b6aeb0 | 399 | ); /* 570 */ |
78f81cc4 | 400 | |
d7c1d17d HMH |
401 | TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */ |
402 | "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ | |
403 | "\\_SB.PCI0.VID0", /* 770e */ | |
404 | "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ | |
405 | "\\_SB.PCI0.AGP.VID", /* all others */ | |
406 | ); /* R30, R31 */ | |
407 | ||
78f81cc4 | 408 | |
56b6aeb0 HMH |
409 | /************************************************************************* |
410 | * ACPI helpers | |
a8b7a662 HMH |
411 | */ |
412 | ||
1da177e4 LT |
413 | static int acpi_evalf(acpi_handle handle, |
414 | void *res, char *method, char *fmt, ...) | |
415 | { | |
416 | char *fmt0 = fmt; | |
78f81cc4 | 417 | struct acpi_object_list params; |
e0c7dfe7 | 418 | union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS]; |
78f81cc4 BD |
419 | struct acpi_buffer result, *resultp; |
420 | union acpi_object out_obj; | |
421 | acpi_status status; | |
422 | va_list ap; | |
423 | char res_type; | |
424 | int success; | |
425 | int quiet; | |
1da177e4 LT |
426 | |
427 | if (!*fmt) { | |
e0c7dfe7 | 428 | printk(TPACPI_ERR "acpi_evalf() called with empty format\n"); |
1da177e4 LT |
429 | return 0; |
430 | } | |
431 | ||
432 | if (*fmt == 'q') { | |
433 | quiet = 1; | |
434 | fmt++; | |
435 | } else | |
436 | quiet = 0; | |
437 | ||
438 | res_type = *(fmt++); | |
439 | ||
440 | params.count = 0; | |
441 | params.pointer = &in_objs[0]; | |
442 | ||
443 | va_start(ap, fmt); | |
444 | while (*fmt) { | |
445 | char c = *(fmt++); | |
446 | switch (c) { | |
447 | case 'd': /* int */ | |
448 | in_objs[params.count].integer.value = va_arg(ap, int); | |
449 | in_objs[params.count++].type = ACPI_TYPE_INTEGER; | |
450 | break; | |
78f81cc4 | 451 | /* add more types as needed */ |
1da177e4 | 452 | default: |
e0c7dfe7 | 453 | printk(TPACPI_ERR "acpi_evalf() called " |
1da177e4 LT |
454 | "with invalid format character '%c'\n", c); |
455 | return 0; | |
456 | } | |
457 | } | |
458 | va_end(ap); | |
459 | ||
78f81cc4 BD |
460 | if (res_type != 'v') { |
461 | result.length = sizeof(out_obj); | |
462 | result.pointer = &out_obj; | |
463 | resultp = &result; | |
464 | } else | |
465 | resultp = NULL; | |
1da177e4 | 466 | |
78f81cc4 | 467 | status = acpi_evaluate_object(handle, method, ¶ms, resultp); |
1da177e4 LT |
468 | |
469 | switch (res_type) { | |
78f81cc4 | 470 | case 'd': /* int */ |
1da177e4 LT |
471 | if (res) |
472 | *(int *)res = out_obj.integer.value; | |
473 | success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER; | |
474 | break; | |
78f81cc4 | 475 | case 'v': /* void */ |
1da177e4 LT |
476 | success = status == AE_OK; |
477 | break; | |
78f81cc4 | 478 | /* add more types as needed */ |
1da177e4 | 479 | default: |
e0c7dfe7 | 480 | printk(TPACPI_ERR "acpi_evalf() called " |
1da177e4 LT |
481 | "with invalid format character '%c'\n", res_type); |
482 | return 0; | |
483 | } | |
484 | ||
56b6aeb0 | 485 | if (!success && !quiet) |
e0c7dfe7 | 486 | printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %d\n", |
56b6aeb0 HMH |
487 | method, fmt0, status); |
488 | ||
489 | return success; | |
490 | } | |
491 | ||
35ff8b9f | 492 | static int acpi_ec_read(int i, u8 *p) |
56b6aeb0 HMH |
493 | { |
494 | int v; | |
495 | ||
496 | if (ecrd_handle) { | |
497 | if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) | |
498 | return 0; | |
499 | *p = v; | |
500 | } else { | |
501 | if (ec_read(i, p) < 0) | |
502 | return 0; | |
503 | } | |
504 | ||
505 | return 1; | |
506 | } | |
507 | ||
508 | static int acpi_ec_write(int i, u8 v) | |
509 | { | |
510 | if (ecwr_handle) { | |
511 | if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) | |
512 | return 0; | |
513 | } else { | |
514 | if (ec_write(i, v) < 0) | |
515 | return 0; | |
516 | } | |
517 | ||
518 | return 1; | |
519 | } | |
520 | ||
013c40e4 | 521 | #if defined(CONFIG_THINKPAD_ACPI_DOCK) || defined(CONFIG_THINKPAD_ACPI_BAY) |
56b6aeb0 HMH |
522 | static int _sta(acpi_handle handle) |
523 | { | |
524 | int status; | |
525 | ||
526 | if (!handle || !acpi_evalf(handle, &status, "_STA", "d")) | |
527 | status = 0; | |
528 | ||
529 | return status; | |
530 | } | |
013c40e4 | 531 | #endif |
56b6aeb0 | 532 | |
c9bea99c HMH |
533 | static int issue_thinkpad_cmos_command(int cmos_cmd) |
534 | { | |
535 | if (!cmos_handle) | |
536 | return -ENXIO; | |
537 | ||
538 | if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) | |
539 | return -EIO; | |
540 | ||
541 | return 0; | |
542 | } | |
543 | ||
56b6aeb0 HMH |
544 | /************************************************************************* |
545 | * ACPI device model | |
546 | */ | |
547 | ||
35ff8b9f HMH |
548 | #define TPACPI_ACPIHANDLE_INIT(object) \ |
549 | drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ | |
f74a27d4 HMH |
550 | object##_paths, ARRAY_SIZE(object##_paths), &object##_path) |
551 | ||
8d376cd6 | 552 | static void drv_acpi_handle_init(char *name, |
5fba344c HMH |
553 | acpi_handle *handle, acpi_handle parent, |
554 | char **paths, int num_paths, char **path) | |
56b6aeb0 HMH |
555 | { |
556 | int i; | |
557 | acpi_status status; | |
558 | ||
5ae930e6 HMH |
559 | vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n", |
560 | name); | |
561 | ||
56b6aeb0 HMH |
562 | for (i = 0; i < num_paths; i++) { |
563 | status = acpi_get_handle(parent, paths[i], handle); | |
564 | if (ACPI_SUCCESS(status)) { | |
565 | *path = paths[i]; | |
5ae930e6 HMH |
566 | dbg_printk(TPACPI_DBG_INIT, |
567 | "Found ACPI handle %s for %s\n", | |
568 | *path, name); | |
56b6aeb0 HMH |
569 | return; |
570 | } | |
571 | } | |
572 | ||
5ae930e6 HMH |
573 | vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n", |
574 | name); | |
56b6aeb0 HMH |
575 | *handle = NULL; |
576 | } | |
577 | ||
8d376cd6 | 578 | static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) |
56b6aeb0 HMH |
579 | { |
580 | struct ibm_struct *ibm = data; | |
581 | ||
8fef502e HMH |
582 | if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) |
583 | return; | |
584 | ||
8d376cd6 | 585 | if (!ibm || !ibm->acpi || !ibm->acpi->notify) |
56b6aeb0 HMH |
586 | return; |
587 | ||
8d376cd6 | 588 | ibm->acpi->notify(ibm, event); |
56b6aeb0 HMH |
589 | } |
590 | ||
8d376cd6 | 591 | static int __init setup_acpi_notify(struct ibm_struct *ibm) |
56b6aeb0 HMH |
592 | { |
593 | acpi_status status; | |
5ae930e6 | 594 | int rc; |
56b6aeb0 | 595 | |
8d376cd6 HMH |
596 | BUG_ON(!ibm->acpi); |
597 | ||
598 | if (!*ibm->acpi->handle) | |
56b6aeb0 HMH |
599 | return 0; |
600 | ||
5ae930e6 | 601 | vdbg_printk(TPACPI_DBG_INIT, |
fe08bc4b HMH |
602 | "setting up ACPI notify for %s\n", ibm->name); |
603 | ||
5ae930e6 HMH |
604 | rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device); |
605 | if (rc < 0) { | |
e0c7dfe7 | 606 | printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n", |
5ae930e6 | 607 | ibm->name, rc); |
56b6aeb0 HMH |
608 | return -ENODEV; |
609 | } | |
610 | ||
db89b4f0 | 611 | ibm->acpi->device->driver_data = ibm; |
8d376cd6 | 612 | sprintf(acpi_device_class(ibm->acpi->device), "%s/%s", |
e0c7dfe7 | 613 | TPACPI_ACPI_EVENT_PREFIX, |
643f12db | 614 | ibm->name); |
56b6aeb0 | 615 | |
8d376cd6 HMH |
616 | status = acpi_install_notify_handler(*ibm->acpi->handle, |
617 | ibm->acpi->type, dispatch_acpi_notify, ibm); | |
56b6aeb0 HMH |
618 | if (ACPI_FAILURE(status)) { |
619 | if (status == AE_ALREADY_EXISTS) { | |
35ff8b9f HMH |
620 | printk(TPACPI_NOTICE |
621 | "another device driver is already " | |
622 | "handling %s events\n", ibm->name); | |
56b6aeb0 | 623 | } else { |
35ff8b9f HMH |
624 | printk(TPACPI_ERR |
625 | "acpi_install_notify_handler(%s) failed: %d\n", | |
626 | ibm->name, status); | |
56b6aeb0 HMH |
627 | } |
628 | return -ENODEV; | |
629 | } | |
8d376cd6 | 630 | ibm->flags.acpi_notify_installed = 1; |
56b6aeb0 HMH |
631 | return 0; |
632 | } | |
633 | ||
8d376cd6 | 634 | static int __init tpacpi_device_add(struct acpi_device *device) |
56b6aeb0 HMH |
635 | { |
636 | return 0; | |
637 | } | |
638 | ||
6700121b | 639 | static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) |
56b6aeb0 | 640 | { |
5ae930e6 | 641 | int rc; |
56b6aeb0 | 642 | |
fe08bc4b HMH |
643 | dbg_printk(TPACPI_DBG_INIT, |
644 | "registering %s as an ACPI driver\n", ibm->name); | |
645 | ||
8d376cd6 HMH |
646 | BUG_ON(!ibm->acpi); |
647 | ||
648 | ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); | |
649 | if (!ibm->acpi->driver) { | |
4f778b92 MK |
650 | printk(TPACPI_ERR |
651 | "failed to allocate memory for ibm->acpi->driver\n"); | |
5fba344c | 652 | return -ENOMEM; |
56b6aeb0 HMH |
653 | } |
654 | ||
e0c7dfe7 | 655 | sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name); |
8d376cd6 | 656 | ibm->acpi->driver->ids = ibm->acpi->hid; |
1ba90e3a | 657 | |
8d376cd6 | 658 | ibm->acpi->driver->ops.add = &tpacpi_device_add; |
56b6aeb0 | 659 | |
5ae930e6 HMH |
660 | rc = acpi_bus_register_driver(ibm->acpi->driver); |
661 | if (rc < 0) { | |
e0c7dfe7 | 662 | printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n", |
1ba90e3a | 663 | ibm->name, rc); |
8d376cd6 HMH |
664 | kfree(ibm->acpi->driver); |
665 | ibm->acpi->driver = NULL; | |
5ae930e6 | 666 | } else if (!rc) |
8d376cd6 | 667 | ibm->flags.acpi_driver_registered = 1; |
56b6aeb0 | 668 | |
5ae930e6 | 669 | return rc; |
56b6aeb0 HMH |
670 | } |
671 | ||
672 | ||
673 | /**************************************************************************** | |
674 | **************************************************************************** | |
675 | * | |
676 | * Procfs Helpers | |
677 | * | |
678 | **************************************************************************** | |
679 | ****************************************************************************/ | |
680 | ||
8d376cd6 HMH |
681 | static int dispatch_procfs_read(char *page, char **start, off_t off, |
682 | int count, int *eof, void *data) | |
56b6aeb0 HMH |
683 | { |
684 | struct ibm_struct *ibm = data; | |
685 | int len; | |
686 | ||
687 | if (!ibm || !ibm->read) | |
688 | return -EINVAL; | |
689 | ||
690 | len = ibm->read(page); | |
691 | if (len < 0) | |
692 | return len; | |
693 | ||
694 | if (len <= off + count) | |
695 | *eof = 1; | |
696 | *start = page + off; | |
697 | len -= off; | |
698 | if (len > count) | |
699 | len = count; | |
700 | if (len < 0) | |
701 | len = 0; | |
702 | ||
703 | return len; | |
704 | } | |
705 | ||
8d376cd6 | 706 | static int dispatch_procfs_write(struct file *file, |
35ff8b9f | 707 | const char __user *userbuf, |
8d376cd6 | 708 | unsigned long count, void *data) |
56b6aeb0 HMH |
709 | { |
710 | struct ibm_struct *ibm = data; | |
711 | char *kernbuf; | |
712 | int ret; | |
713 | ||
714 | if (!ibm || !ibm->write) | |
715 | return -EINVAL; | |
716 | ||
717 | kernbuf = kmalloc(count + 2, GFP_KERNEL); | |
718 | if (!kernbuf) | |
719 | return -ENOMEM; | |
1da177e4 | 720 | |
56b6aeb0 HMH |
721 | if (copy_from_user(kernbuf, userbuf, count)) { |
722 | kfree(kernbuf); | |
723 | return -EFAULT; | |
724 | } | |
1da177e4 | 725 | |
56b6aeb0 HMH |
726 | kernbuf[count] = 0; |
727 | strcat(kernbuf, ","); | |
728 | ret = ibm->write(kernbuf); | |
729 | if (ret == 0) | |
730 | ret = count; | |
1da177e4 | 731 | |
56b6aeb0 HMH |
732 | kfree(kernbuf); |
733 | ||
734 | return ret; | |
1da177e4 LT |
735 | } |
736 | ||
737 | static char *next_cmd(char **cmds) | |
738 | { | |
739 | char *start = *cmds; | |
740 | char *end; | |
741 | ||
742 | while ((end = strchr(start, ',')) && end == start) | |
743 | start = end + 1; | |
744 | ||
745 | if (!end) | |
746 | return NULL; | |
747 | ||
748 | *end = 0; | |
749 | *cmds = end + 1; | |
750 | return start; | |
751 | } | |
752 | ||
56b6aeb0 | 753 | |
54ae1501 HMH |
754 | /**************************************************************************** |
755 | **************************************************************************** | |
756 | * | |
7f5d1cd6 | 757 | * Device model: input, hwmon and platform |
54ae1501 HMH |
758 | * |
759 | **************************************************************************** | |
760 | ****************************************************************************/ | |
761 | ||
94954cc6 | 762 | static struct platform_device *tpacpi_pdev; |
7fd40029 | 763 | static struct platform_device *tpacpi_sensors_pdev; |
1beeffe4 | 764 | static struct device *tpacpi_hwmon; |
7f5d1cd6 | 765 | static struct input_dev *tpacpi_inputdev; |
8523ed6f | 766 | static struct mutex tpacpi_inputdev_send_mutex; |
b21a15f6 | 767 | static LIST_HEAD(tpacpi_all_drivers); |
e295e850 | 768 | |
083f1760 HMH |
769 | static int tpacpi_suspend_handler(struct platform_device *pdev, |
770 | pm_message_t state) | |
771 | { | |
772 | struct ibm_struct *ibm, *itmp; | |
773 | ||
774 | list_for_each_entry_safe(ibm, itmp, | |
775 | &tpacpi_all_drivers, | |
776 | all_drivers) { | |
777 | if (ibm->suspend) | |
778 | (ibm->suspend)(state); | |
779 | } | |
780 | ||
781 | return 0; | |
782 | } | |
783 | ||
e295e850 HMH |
784 | static int tpacpi_resume_handler(struct platform_device *pdev) |
785 | { | |
786 | struct ibm_struct *ibm, *itmp; | |
787 | ||
788 | list_for_each_entry_safe(ibm, itmp, | |
789 | &tpacpi_all_drivers, | |
790 | all_drivers) { | |
791 | if (ibm->resume) | |
792 | (ibm->resume)(); | |
793 | } | |
794 | ||
795 | return 0; | |
796 | } | |
797 | ||
90d9d3c7 HMH |
798 | static void tpacpi_shutdown_handler(struct platform_device *pdev) |
799 | { | |
800 | struct ibm_struct *ibm, *itmp; | |
801 | ||
802 | list_for_each_entry_safe(ibm, itmp, | |
803 | &tpacpi_all_drivers, | |
804 | all_drivers) { | |
805 | if (ibm->shutdown) | |
806 | (ibm->shutdown)(); | |
807 | } | |
808 | } | |
809 | ||
54ae1501 HMH |
810 | static struct platform_driver tpacpi_pdriver = { |
811 | .driver = { | |
e0c7dfe7 | 812 | .name = TPACPI_DRVR_NAME, |
54ae1501 HMH |
813 | .owner = THIS_MODULE, |
814 | }, | |
083f1760 | 815 | .suspend = tpacpi_suspend_handler, |
e295e850 | 816 | .resume = tpacpi_resume_handler, |
90d9d3c7 | 817 | .shutdown = tpacpi_shutdown_handler, |
54ae1501 HMH |
818 | }; |
819 | ||
7fd40029 HMH |
820 | static struct platform_driver tpacpi_hwmon_pdriver = { |
821 | .driver = { | |
e0c7dfe7 | 822 | .name = TPACPI_HWMON_DRVR_NAME, |
7fd40029 HMH |
823 | .owner = THIS_MODULE, |
824 | }, | |
825 | }; | |
54ae1501 | 826 | |
176750d6 | 827 | /************************************************************************* |
b21a15f6 | 828 | * sysfs support helpers |
176750d6 HMH |
829 | */ |
830 | ||
b21a15f6 HMH |
831 | struct attribute_set { |
832 | unsigned int members, max_members; | |
833 | struct attribute_group group; | |
176750d6 HMH |
834 | }; |
835 | ||
7252374a HMH |
836 | struct attribute_set_obj { |
837 | struct attribute_set s; | |
838 | struct attribute *a; | |
839 | } __attribute__((packed)); | |
840 | ||
841 | static struct attribute_set *create_attr_set(unsigned int max_members, | |
35ff8b9f | 842 | const char *name) |
7252374a HMH |
843 | { |
844 | struct attribute_set_obj *sobj; | |
845 | ||
846 | if (max_members == 0) | |
847 | return NULL; | |
848 | ||
849 | /* Allocates space for implicit NULL at the end too */ | |
850 | sobj = kzalloc(sizeof(struct attribute_set_obj) + | |
851 | max_members * sizeof(struct attribute *), | |
852 | GFP_KERNEL); | |
853 | if (!sobj) | |
854 | return NULL; | |
855 | sobj->s.max_members = max_members; | |
856 | sobj->s.group.attrs = &sobj->a; | |
857 | sobj->s.group.name = name; | |
858 | ||
859 | return &sobj->s; | |
860 | } | |
861 | ||
f74a27d4 HMH |
862 | #define destroy_attr_set(_set) \ |
863 | kfree(_set); | |
864 | ||
7252374a | 865 | /* not multi-threaded safe, use it in a single thread per set */ |
35ff8b9f | 866 | static int add_to_attr_set(struct attribute_set *s, struct attribute *attr) |
7252374a HMH |
867 | { |
868 | if (!s || !attr) | |
869 | return -EINVAL; | |
870 | ||
871 | if (s->members >= s->max_members) | |
872 | return -ENOMEM; | |
873 | ||
874 | s->group.attrs[s->members] = attr; | |
875 | s->members++; | |
876 | ||
877 | return 0; | |
878 | } | |
879 | ||
35ff8b9f | 880 | static int add_many_to_attr_set(struct attribute_set *s, |
7252374a HMH |
881 | struct attribute **attr, |
882 | unsigned int count) | |
883 | { | |
884 | int i, res; | |
885 | ||
886 | for (i = 0; i < count; i++) { | |
887 | res = add_to_attr_set(s, attr[i]); | |
888 | if (res) | |
889 | return res; | |
890 | } | |
891 | ||
892 | return 0; | |
893 | } | |
894 | ||
35ff8b9f | 895 | static void delete_attr_set(struct attribute_set *s, struct kobject *kobj) |
7252374a HMH |
896 | { |
897 | sysfs_remove_group(kobj, &s->group); | |
898 | destroy_attr_set(s); | |
899 | } | |
900 | ||
f74a27d4 HMH |
901 | #define register_attr_set_with_sysfs(_attr_set, _kobj) \ |
902 | sysfs_create_group(_kobj, &_attr_set->group) | |
903 | ||
7252374a HMH |
904 | static int parse_strtoul(const char *buf, |
905 | unsigned long max, unsigned long *value) | |
906 | { | |
907 | char *endp; | |
908 | ||
32afbf07 HMH |
909 | while (*buf && isspace(*buf)) |
910 | buf++; | |
7252374a HMH |
911 | *value = simple_strtoul(buf, &endp, 0); |
912 | while (*endp && isspace(*endp)) | |
913 | endp++; | |
914 | if (*endp || *value > max) | |
915 | return -EINVAL; | |
916 | ||
917 | return 0; | |
918 | } | |
919 | ||
d64c81c4 HMH |
920 | static void tpacpi_disable_brightness_delay(void) |
921 | { | |
922 | if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0)) | |
923 | printk(TPACPI_NOTICE | |
924 | "ACPI backlight control delay disabled\n"); | |
925 | } | |
926 | ||
b5972796 HMH |
927 | static int __init tpacpi_query_bcl_levels(acpi_handle handle) |
928 | { | |
929 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
930 | union acpi_object *obj; | |
931 | int rc; | |
932 | ||
933 | if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) { | |
934 | obj = (union acpi_object *)buffer.pointer; | |
935 | if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { | |
936 | printk(TPACPI_ERR "Unknown _BCL data, " | |
937 | "please report this to %s\n", TPACPI_MAIL); | |
938 | rc = 0; | |
939 | } else { | |
940 | rc = obj->package.count; | |
941 | } | |
942 | } else { | |
943 | return 0; | |
944 | } | |
945 | ||
946 | kfree(buffer.pointer); | |
947 | return rc; | |
948 | } | |
949 | ||
950 | static acpi_status __init tpacpi_acpi_walk_find_bcl(acpi_handle handle, | |
951 | u32 lvl, void *context, void **rv) | |
952 | { | |
953 | char name[ACPI_PATH_SEGMENT_LENGTH]; | |
954 | struct acpi_buffer buffer = { sizeof(name), &name }; | |
955 | ||
956 | if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) && | |
957 | !strncmp("_BCL", name, sizeof(name) - 1)) { | |
958 | BUG_ON(!rv || !*rv); | |
959 | **(int **)rv = tpacpi_query_bcl_levels(handle); | |
960 | return AE_CTRL_TERMINATE; | |
961 | } else { | |
962 | return AE_OK; | |
963 | } | |
964 | } | |
965 | ||
966 | /* | |
967 | * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map | |
968 | */ | |
969 | static int __init tpacpi_check_std_acpi_brightness_support(void) | |
970 | { | |
971 | int status; | |
972 | int bcl_levels = 0; | |
973 | void *bcl_ptr = &bcl_levels; | |
974 | ||
975 | if (!vid_handle) { | |
976 | TPACPI_ACPIHANDLE_INIT(vid); | |
977 | } | |
978 | if (!vid_handle) | |
979 | return 0; | |
980 | ||
981 | /* | |
982 | * Search for a _BCL method, and execute it. This is safe on all | |
983 | * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista | |
984 | * BIOS in ACPI backlight control mode. We do NOT have to care | |
985 | * about calling the _BCL method in an enabled video device, any | |
986 | * will do for our purposes. | |
987 | */ | |
988 | ||
989 | status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3, | |
990 | tpacpi_acpi_walk_find_bcl, NULL, | |
991 | &bcl_ptr); | |
992 | ||
993 | if (ACPI_SUCCESS(status) && bcl_levels > 2) { | |
994 | tp_features.bright_acpimode = 1; | |
995 | return (bcl_levels - 2); | |
996 | } | |
997 | ||
998 | return 0; | |
999 | } | |
1000 | ||
19d337df JB |
1001 | static void printk_deprecated_attribute(const char * const what, |
1002 | const char * const details) | |
1003 | { | |
1004 | tpacpi_log_usertask("deprecated sysfs attribute"); | |
1005 | printk(TPACPI_WARN "WARNING: sysfs attribute %s is deprecated and " | |
1006 | "will be removed. %s\n", | |
1007 | what, details); | |
1008 | } | |
1009 | ||
1010 | /************************************************************************* | |
1011 | * rfkill and radio control support helpers | |
1012 | */ | |
1013 | ||
1014 | /* | |
1015 | * ThinkPad-ACPI firmware handling model: | |
1016 | * | |
1017 | * WLSW (master wireless switch) is event-driven, and is common to all | |
1018 | * firmware-controlled radios. It cannot be controlled, just monitored, | |
1019 | * as expected. It overrides all radio state in firmware | |
1020 | * | |
1021 | * The kernel, a masked-off hotkey, and WLSW can change the radio state | |
1022 | * (TODO: verify how WLSW interacts with the returned radio state). | |
1023 | * | |
1024 | * The only time there are shadow radio state changes, is when | |
1025 | * masked-off hotkeys are used. | |
1026 | */ | |
1027 | ||
1028 | /* | |
1029 | * Internal driver API for radio state: | |
1030 | * | |
1031 | * int: < 0 = error, otherwise enum tpacpi_rfkill_state | |
1032 | * bool: true means radio blocked (off) | |
1033 | */ | |
1034 | enum tpacpi_rfkill_state { | |
1035 | TPACPI_RFK_RADIO_OFF = 0, | |
1036 | TPACPI_RFK_RADIO_ON | |
1037 | }; | |
1038 | ||
1039 | /* rfkill switches */ | |
1040 | enum tpacpi_rfk_id { | |
1041 | TPACPI_RFK_BLUETOOTH_SW_ID = 0, | |
1042 | TPACPI_RFK_WWAN_SW_ID, | |
1043 | TPACPI_RFK_UWB_SW_ID, | |
1044 | TPACPI_RFK_SW_MAX | |
1045 | }; | |
1046 | ||
1047 | static const char *tpacpi_rfkill_names[] = { | |
1048 | [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth", | |
1049 | [TPACPI_RFK_WWAN_SW_ID] = "wwan", | |
1050 | [TPACPI_RFK_UWB_SW_ID] = "uwb", | |
1051 | [TPACPI_RFK_SW_MAX] = NULL | |
1052 | }; | |
1053 | ||
1054 | /* ThinkPad-ACPI rfkill subdriver */ | |
1055 | struct tpacpi_rfk { | |
1056 | struct rfkill *rfkill; | |
1057 | enum tpacpi_rfk_id id; | |
1058 | const struct tpacpi_rfk_ops *ops; | |
1059 | }; | |
1060 | ||
1061 | struct tpacpi_rfk_ops { | |
1062 | /* firmware interface */ | |
1063 | int (*get_status)(void); | |
1064 | int (*set_status)(const enum tpacpi_rfkill_state); | |
1065 | }; | |
1066 | ||
1067 | static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX]; | |
1068 | ||
1069 | /* Query FW and update rfkill sw state for a given rfkill switch */ | |
1070 | static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk) | |
1071 | { | |
1072 | int status; | |
1073 | ||
1074 | if (!tp_rfk) | |
1075 | return -ENODEV; | |
1076 | ||
1077 | status = (tp_rfk->ops->get_status)(); | |
1078 | if (status < 0) | |
1079 | return status; | |
1080 | ||
1081 | rfkill_set_sw_state(tp_rfk->rfkill, | |
1082 | (status == TPACPI_RFK_RADIO_OFF)); | |
1083 | ||
1084 | return status; | |
1085 | } | |
1086 | ||
1087 | /* Query FW and update rfkill sw state for all rfkill switches */ | |
1088 | static void tpacpi_rfk_update_swstate_all(void) | |
1089 | { | |
1090 | unsigned int i; | |
1091 | ||
1092 | for (i = 0; i < TPACPI_RFK_SW_MAX; i++) | |
1093 | tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]); | |
1094 | } | |
1095 | ||
1096 | /* | |
1097 | * Sync the HW-blocking state of all rfkill switches, | |
1098 | * do notice it causes the rfkill core to schedule uevents | |
1099 | */ | |
1100 | static void tpacpi_rfk_update_hwblock_state(bool blocked) | |
1101 | { | |
1102 | unsigned int i; | |
1103 | struct tpacpi_rfk *tp_rfk; | |
1104 | ||
1105 | for (i = 0; i < TPACPI_RFK_SW_MAX; i++) { | |
1106 | tp_rfk = tpacpi_rfkill_switches[i]; | |
1107 | if (tp_rfk) { | |
1108 | if (rfkill_set_hw_state(tp_rfk->rfkill, | |
1109 | blocked)) { | |
1110 | /* ignore -- we track sw block */ | |
1111 | } | |
1112 | } | |
1113 | } | |
1114 | } | |
1115 | ||
1116 | /* Call to get the WLSW state from the firmware */ | |
1117 | static int hotkey_get_wlsw(void); | |
1118 | ||
1119 | /* Call to query WLSW state and update all rfkill switches */ | |
1120 | static bool tpacpi_rfk_check_hwblock_state(void) | |
1121 | { | |
1122 | int res = hotkey_get_wlsw(); | |
1123 | int hw_blocked; | |
1124 | ||
1125 | /* When unknown or unsupported, we have to assume it is unblocked */ | |
1126 | if (res < 0) | |
1127 | return false; | |
1128 | ||
1129 | hw_blocked = (res == TPACPI_RFK_RADIO_OFF); | |
1130 | tpacpi_rfk_update_hwblock_state(hw_blocked); | |
1131 | ||
1132 | return hw_blocked; | |
1133 | } | |
1134 | ||
1135 | static int tpacpi_rfk_hook_set_block(void *data, bool blocked) | |
1136 | { | |
1137 | struct tpacpi_rfk *tp_rfk = data; | |
1138 | int res; | |
1139 | ||
1140 | dbg_printk(TPACPI_DBG_RFKILL, | |
1141 | "request to change radio state to %s\n", | |
1142 | blocked ? "blocked" : "unblocked"); | |
1143 | ||
1144 | /* try to set radio state */ | |
1145 | res = (tp_rfk->ops->set_status)(blocked ? | |
1146 | TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON); | |
1147 | ||
1148 | /* and update the rfkill core with whatever the FW really did */ | |
1149 | tpacpi_rfk_update_swstate(tp_rfk); | |
1150 | ||
1151 | return (res < 0) ? res : 0; | |
1152 | } | |
1153 | ||
1154 | static const struct rfkill_ops tpacpi_rfk_rfkill_ops = { | |
1155 | .set_block = tpacpi_rfk_hook_set_block, | |
1156 | }; | |
1157 | ||
1158 | static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id, | |
1159 | const struct tpacpi_rfk_ops *tp_rfkops, | |
0e74dc26 HMH |
1160 | const enum rfkill_type rfktype, |
1161 | const char *name, | |
19d337df | 1162 | const bool set_default) |
0e74dc26 | 1163 | { |
19d337df | 1164 | struct tpacpi_rfk *atp_rfk; |
0e74dc26 | 1165 | int res; |
19d337df JB |
1166 | bool initial_sw_state = false; |
1167 | int initial_sw_status; | |
90d9d3c7 | 1168 | |
19d337df JB |
1169 | BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]); |
1170 | ||
1171 | initial_sw_status = (tp_rfkops->get_status)(); | |
1172 | if (initial_sw_status < 0) { | |
90d9d3c7 HMH |
1173 | printk(TPACPI_ERR |
1174 | "failed to read initial state for %s, error %d; " | |
19d337df JB |
1175 | "will turn radio off\n", name, initial_sw_status); |
1176 | } else { | |
1177 | initial_sw_state = (initial_sw_status == TPACPI_RFK_RADIO_OFF); | |
1178 | if (set_default) { | |
1179 | /* try to set the initial state as the default for the | |
1180 | * rfkill type, since we ask the firmware to preserve | |
1181 | * it across S5 in NVRAM */ | |
1182 | rfkill_set_global_sw_state(rfktype, initial_sw_state); | |
1183 | } | |
1184 | } | |
1185 | ||
1186 | atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL); | |
1187 | if (atp_rfk) | |
1188 | atp_rfk->rfkill = rfkill_alloc(name, | |
1189 | &tpacpi_pdev->dev, | |
1190 | rfktype, | |
1191 | &tpacpi_rfk_rfkill_ops, | |
1192 | atp_rfk); | |
1193 | if (!atp_rfk || !atp_rfk->rfkill) { | |
0e74dc26 HMH |
1194 | printk(TPACPI_ERR |
1195 | "failed to allocate memory for rfkill class\n"); | |
19d337df | 1196 | kfree(atp_rfk); |
0e74dc26 HMH |
1197 | return -ENOMEM; |
1198 | } | |
1199 | ||
19d337df JB |
1200 | atp_rfk->id = id; |
1201 | atp_rfk->ops = tp_rfkops; | |
0e74dc26 | 1202 | |
19d337df JB |
1203 | rfkill_set_states(atp_rfk->rfkill, initial_sw_state, |
1204 | tpacpi_rfk_check_hwblock_state()); | |
1205 | ||
1206 | res = rfkill_register(atp_rfk->rfkill); | |
0e74dc26 HMH |
1207 | if (res < 0) { |
1208 | printk(TPACPI_ERR | |
1209 | "failed to register %s rfkill switch: %d\n", | |
1210 | name, res); | |
19d337df JB |
1211 | rfkill_destroy(atp_rfk->rfkill); |
1212 | kfree(atp_rfk); | |
0e74dc26 HMH |
1213 | return res; |
1214 | } | |
1215 | ||
19d337df | 1216 | tpacpi_rfkill_switches[id] = atp_rfk; |
0e74dc26 HMH |
1217 | return 0; |
1218 | } | |
1219 | ||
19d337df | 1220 | static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id) |
73a94d86 | 1221 | { |
19d337df JB |
1222 | struct tpacpi_rfk *tp_rfk; |
1223 | ||
1224 | BUG_ON(id >= TPACPI_RFK_SW_MAX); | |
1225 | ||
1226 | tp_rfk = tpacpi_rfkill_switches[id]; | |
1227 | if (tp_rfk) { | |
1228 | rfkill_unregister(tp_rfk->rfkill); | |
1229 | tpacpi_rfkill_switches[id] = NULL; | |
1230 | kfree(tp_rfk); | |
1231 | } | |
73a94d86 HMH |
1232 | } |
1233 | ||
1234 | static void printk_deprecated_rfkill_attribute(const char * const what) | |
1235 | { | |
1236 | printk_deprecated_attribute(what, | |
1237 | "Please switch to generic rfkill before year 2010"); | |
1238 | } | |
1239 | ||
19d337df JB |
1240 | /* sysfs <radio> enable ------------------------------------------------ */ |
1241 | static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id, | |
1242 | struct device_attribute *attr, | |
1243 | char *buf) | |
1244 | { | |
1245 | int status; | |
1246 | ||
1247 | printk_deprecated_rfkill_attribute(attr->attr.name); | |
1248 | ||
1249 | /* This is in the ABI... */ | |
1250 | if (tpacpi_rfk_check_hwblock_state()) { | |
1251 | status = TPACPI_RFK_RADIO_OFF; | |
1252 | } else { | |
1253 | status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); | |
1254 | if (status < 0) | |
1255 | return status; | |
1256 | } | |
1257 | ||
1258 | return snprintf(buf, PAGE_SIZE, "%d\n", | |
1259 | (status == TPACPI_RFK_RADIO_ON) ? 1 : 0); | |
1260 | } | |
1261 | ||
1262 | static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id, | |
1263 | struct device_attribute *attr, | |
1264 | const char *buf, size_t count) | |
1265 | { | |
1266 | unsigned long t; | |
1267 | int res; | |
1268 | ||
1269 | printk_deprecated_rfkill_attribute(attr->attr.name); | |
1270 | ||
1271 | if (parse_strtoul(buf, 1, &t)) | |
1272 | return -EINVAL; | |
1273 | ||
1274 | tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t); | |
1275 | ||
1276 | /* This is in the ABI... */ | |
1277 | if (tpacpi_rfk_check_hwblock_state() && !!t) | |
1278 | return -EPERM; | |
1279 | ||
1280 | res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ? | |
1281 | TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF); | |
1282 | tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); | |
1283 | ||
1284 | return (res < 0) ? res : count; | |
1285 | } | |
1286 | ||
1287 | /* procfs -------------------------------------------------------------- */ | |
1288 | static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, char *p) | |
1289 | { | |
1290 | int len = 0; | |
1291 | ||
1292 | if (id >= TPACPI_RFK_SW_MAX) | |
1293 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
1294 | else { | |
1295 | int status; | |
1296 | ||
1297 | /* This is in the ABI... */ | |
1298 | if (tpacpi_rfk_check_hwblock_state()) { | |
1299 | status = TPACPI_RFK_RADIO_OFF; | |
1300 | } else { | |
1301 | status = tpacpi_rfk_update_swstate( | |
1302 | tpacpi_rfkill_switches[id]); | |
1303 | if (status < 0) | |
1304 | return status; | |
1305 | } | |
1306 | ||
1307 | len += sprintf(p + len, "status:\t\t%s\n", | |
1308 | (status == TPACPI_RFK_RADIO_ON) ? | |
1309 | "enabled" : "disabled"); | |
1310 | len += sprintf(p + len, "commands:\tenable, disable\n"); | |
1311 | } | |
1312 | ||
1313 | return len; | |
1314 | } | |
1315 | ||
1316 | static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf) | |
1317 | { | |
1318 | char *cmd; | |
1319 | int status = -1; | |
1320 | int res = 0; | |
1321 | ||
1322 | if (id >= TPACPI_RFK_SW_MAX) | |
1323 | return -ENODEV; | |
1324 | ||
1325 | while ((cmd = next_cmd(&buf))) { | |
1326 | if (strlencmp(cmd, "enable") == 0) | |
1327 | status = TPACPI_RFK_RADIO_ON; | |
1328 | else if (strlencmp(cmd, "disable") == 0) | |
1329 | status = TPACPI_RFK_RADIO_OFF; | |
1330 | else | |
1331 | return -EINVAL; | |
1332 | } | |
1333 | ||
1334 | if (status != -1) { | |
1335 | tpacpi_disclose_usertask("procfs", "attempt to %s %s\n", | |
1336 | (status == TPACPI_RFK_RADIO_ON) ? | |
1337 | "enable" : "disable", | |
1338 | tpacpi_rfkill_names[id]); | |
1339 | res = (tpacpi_rfkill_switches[id]->ops->set_status)(status); | |
1340 | tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); | |
1341 | } | |
1342 | ||
1343 | return res; | |
1344 | } | |
1345 | ||
56b6aeb0 | 1346 | /************************************************************************* |
b21a15f6 | 1347 | * thinkpad-acpi driver attributes |
56b6aeb0 HMH |
1348 | */ |
1349 | ||
b21a15f6 HMH |
1350 | /* interface_version --------------------------------------------------- */ |
1351 | static ssize_t tpacpi_driver_interface_version_show( | |
1352 | struct device_driver *drv, | |
1353 | char *buf) | |
1da177e4 | 1354 | { |
b21a15f6 HMH |
1355 | return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION); |
1356 | } | |
1357 | ||
1358 | static DRIVER_ATTR(interface_version, S_IRUGO, | |
1359 | tpacpi_driver_interface_version_show, NULL); | |
1360 | ||
1361 | /* debug_level --------------------------------------------------------- */ | |
1362 | static ssize_t tpacpi_driver_debug_show(struct device_driver *drv, | |
1363 | char *buf) | |
1364 | { | |
1365 | return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level); | |
1366 | } | |
1367 | ||
1368 | static ssize_t tpacpi_driver_debug_store(struct device_driver *drv, | |
1369 | const char *buf, size_t count) | |
1370 | { | |
1371 | unsigned long t; | |
1372 | ||
1373 | if (parse_strtoul(buf, 0xffff, &t)) | |
1374 | return -EINVAL; | |
1375 | ||
1376 | dbg_level = t; | |
1377 | ||
1378 | return count; | |
1379 | } | |
1380 | ||
1381 | static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO, | |
1382 | tpacpi_driver_debug_show, tpacpi_driver_debug_store); | |
1383 | ||
1384 | /* version ------------------------------------------------------------- */ | |
1385 | static ssize_t tpacpi_driver_version_show(struct device_driver *drv, | |
1386 | char *buf) | |
1387 | { | |
35ff8b9f HMH |
1388 | return snprintf(buf, PAGE_SIZE, "%s v%s\n", |
1389 | TPACPI_DESC, TPACPI_VERSION); | |
b21a15f6 HMH |
1390 | } |
1391 | ||
1392 | static DRIVER_ATTR(version, S_IRUGO, | |
1393 | tpacpi_driver_version_show, NULL); | |
1394 | ||
1395 | /* --------------------------------------------------------------------- */ | |
1396 | ||
a73f3091 HMH |
1397 | #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
1398 | ||
a73f3091 HMH |
1399 | /* wlsw_emulstate ------------------------------------------------------ */ |
1400 | static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv, | |
1401 | char *buf) | |
1402 | { | |
1403 | return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate); | |
1404 | } | |
1405 | ||
1406 | static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv, | |
1407 | const char *buf, size_t count) | |
1408 | { | |
1409 | unsigned long t; | |
1410 | ||
1411 | if (parse_strtoul(buf, 1, &t)) | |
1412 | return -EINVAL; | |
1413 | ||
19d337df | 1414 | if (tpacpi_wlsw_emulstate != !!t) { |
a73f3091 | 1415 | tpacpi_wlsw_emulstate = !!t; |
19d337df JB |
1416 | tpacpi_rfk_update_hwblock_state(!t); /* negative logic */ |
1417 | } | |
a73f3091 HMH |
1418 | |
1419 | return count; | |
1420 | } | |
1421 | ||
1422 | static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO, | |
1423 | tpacpi_driver_wlsw_emulstate_show, | |
1424 | tpacpi_driver_wlsw_emulstate_store); | |
1425 | ||
1426 | /* bluetooth_emulstate ------------------------------------------------- */ | |
1427 | static ssize_t tpacpi_driver_bluetooth_emulstate_show( | |
1428 | struct device_driver *drv, | |
1429 | char *buf) | |
1430 | { | |
1431 | return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate); | |
1432 | } | |
1433 | ||
1434 | static ssize_t tpacpi_driver_bluetooth_emulstate_store( | |
1435 | struct device_driver *drv, | |
1436 | const char *buf, size_t count) | |
1437 | { | |
1438 | unsigned long t; | |
1439 | ||
1440 | if (parse_strtoul(buf, 1, &t)) | |
1441 | return -EINVAL; | |
1442 | ||
1443 | tpacpi_bluetooth_emulstate = !!t; | |
1444 | ||
1445 | return count; | |
1446 | } | |
1447 | ||
1448 | static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO, | |
1449 | tpacpi_driver_bluetooth_emulstate_show, | |
1450 | tpacpi_driver_bluetooth_emulstate_store); | |
1451 | ||
1452 | /* wwan_emulstate ------------------------------------------------- */ | |
1453 | static ssize_t tpacpi_driver_wwan_emulstate_show( | |
1454 | struct device_driver *drv, | |
1455 | char *buf) | |
1456 | { | |
1457 | return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate); | |
1458 | } | |
1459 | ||
1460 | static ssize_t tpacpi_driver_wwan_emulstate_store( | |
1461 | struct device_driver *drv, | |
1462 | const char *buf, size_t count) | |
1463 | { | |
1464 | unsigned long t; | |
1465 | ||
1466 | if (parse_strtoul(buf, 1, &t)) | |
1467 | return -EINVAL; | |
1468 | ||
1469 | tpacpi_wwan_emulstate = !!t; | |
1470 | ||
1471 | return count; | |
1472 | } | |
1473 | ||
1474 | static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO, | |
1475 | tpacpi_driver_wwan_emulstate_show, | |
1476 | tpacpi_driver_wwan_emulstate_store); | |
1477 | ||
0045c0aa HMH |
1478 | /* uwb_emulstate ------------------------------------------------- */ |
1479 | static ssize_t tpacpi_driver_uwb_emulstate_show( | |
1480 | struct device_driver *drv, | |
1481 | char *buf) | |
1482 | { | |
1483 | return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate); | |
1484 | } | |
1485 | ||
1486 | static ssize_t tpacpi_driver_uwb_emulstate_store( | |
1487 | struct device_driver *drv, | |
1488 | const char *buf, size_t count) | |
1489 | { | |
1490 | unsigned long t; | |
1491 | ||
1492 | if (parse_strtoul(buf, 1, &t)) | |
1493 | return -EINVAL; | |
1494 | ||
1495 | tpacpi_uwb_emulstate = !!t; | |
1496 | ||
1497 | return count; | |
1498 | } | |
1499 | ||
1500 | static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO, | |
1501 | tpacpi_driver_uwb_emulstate_show, | |
1502 | tpacpi_driver_uwb_emulstate_store); | |
a73f3091 HMH |
1503 | #endif |
1504 | ||
1505 | /* --------------------------------------------------------------------- */ | |
1506 | ||
35ff8b9f | 1507 | static struct driver_attribute *tpacpi_driver_attributes[] = { |
b21a15f6 HMH |
1508 | &driver_attr_debug_level, &driver_attr_version, |
1509 | &driver_attr_interface_version, | |
1510 | }; | |
1511 | ||
1512 | static int __init tpacpi_create_driver_attributes(struct device_driver *drv) | |
1513 | { | |
1514 | int i, res; | |
1515 | ||
1516 | i = 0; | |
1517 | res = 0; | |
1518 | while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) { | |
1519 | res = driver_create_file(drv, tpacpi_driver_attributes[i]); | |
1520 | i++; | |
1521 | } | |
1522 | ||
a73f3091 HMH |
1523 | #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
1524 | if (!res && dbg_wlswemul) | |
1525 | res = driver_create_file(drv, &driver_attr_wlsw_emulstate); | |
1526 | if (!res && dbg_bluetoothemul) | |
1527 | res = driver_create_file(drv, &driver_attr_bluetooth_emulstate); | |
1528 | if (!res && dbg_wwanemul) | |
1529 | res = driver_create_file(drv, &driver_attr_wwan_emulstate); | |
0045c0aa HMH |
1530 | if (!res && dbg_uwbemul) |
1531 | res = driver_create_file(drv, &driver_attr_uwb_emulstate); | |
a73f3091 HMH |
1532 | #endif |
1533 | ||
b21a15f6 HMH |
1534 | return res; |
1535 | } | |
1536 | ||
1537 | static void tpacpi_remove_driver_attributes(struct device_driver *drv) | |
1538 | { | |
1539 | int i; | |
1540 | ||
35ff8b9f | 1541 | for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++) |
b21a15f6 | 1542 | driver_remove_file(drv, tpacpi_driver_attributes[i]); |
a73f3091 HMH |
1543 | |
1544 | #ifdef THINKPAD_ACPI_DEBUGFACILITIES | |
1545 | driver_remove_file(drv, &driver_attr_wlsw_emulstate); | |
1546 | driver_remove_file(drv, &driver_attr_bluetooth_emulstate); | |
1547 | driver_remove_file(drv, &driver_attr_wwan_emulstate); | |
0045c0aa | 1548 | driver_remove_file(drv, &driver_attr_uwb_emulstate); |
a73f3091 | 1549 | #endif |
b21a15f6 HMH |
1550 | } |
1551 | ||
1552 | /**************************************************************************** | |
1553 | **************************************************************************** | |
1554 | * | |
1555 | * Subdrivers | |
1556 | * | |
1557 | **************************************************************************** | |
1558 | ****************************************************************************/ | |
1559 | ||
1560 | /************************************************************************* | |
1561 | * thinkpad-acpi init subdriver | |
1562 | */ | |
1563 | ||
1564 | static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm) | |
1565 | { | |
e0c7dfe7 HMH |
1566 | printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION); |
1567 | printk(TPACPI_INFO "%s\n", TPACPI_URL); | |
b21a15f6 | 1568 | |
e0c7dfe7 | 1569 | printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n", |
b21a15f6 HMH |
1570 | (thinkpad_id.bios_version_str) ? |
1571 | thinkpad_id.bios_version_str : "unknown", | |
1572 | (thinkpad_id.ec_version_str) ? | |
1573 | thinkpad_id.ec_version_str : "unknown"); | |
d5a2f2f1 HMH |
1574 | |
1575 | if (thinkpad_id.vendor && thinkpad_id.model_str) | |
8c74adbc | 1576 | printk(TPACPI_INFO "%s %s, model %s\n", |
d5a2f2f1 HMH |
1577 | (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? |
1578 | "IBM" : ((thinkpad_id.vendor == | |
1579 | PCI_VENDOR_ID_LENOVO) ? | |
1580 | "Lenovo" : "Unknown vendor"), | |
8c74adbc HMH |
1581 | thinkpad_id.model_str, |
1582 | (thinkpad_id.nummodel_str) ? | |
1583 | thinkpad_id.nummodel_str : "unknown"); | |
3945ac36 | 1584 | |
1da177e4 LT |
1585 | return 0; |
1586 | } | |
1587 | ||
643f12db | 1588 | static int thinkpad_acpi_driver_read(char *p) |
1da177e4 LT |
1589 | { |
1590 | int len = 0; | |
1591 | ||
e0c7dfe7 HMH |
1592 | len += sprintf(p + len, "driver:\t\t%s\n", TPACPI_DESC); |
1593 | len += sprintf(p + len, "version:\t%s\n", TPACPI_VERSION); | |
1da177e4 LT |
1594 | |
1595 | return len; | |
1596 | } | |
1597 | ||
a5763f22 HMH |
1598 | static struct ibm_struct thinkpad_acpi_driver_data = { |
1599 | .name = "driver", | |
1600 | .read = thinkpad_acpi_driver_read, | |
1601 | }; | |
1602 | ||
56b6aeb0 HMH |
1603 | /************************************************************************* |
1604 | * Hotkey subdriver | |
1605 | */ | |
1606 | ||
f74a27d4 HMH |
1607 | enum { /* hot key scan codes (derived from ACPI DSDT) */ |
1608 | TP_ACPI_HOTKEYSCAN_FNF1 = 0, | |
1609 | TP_ACPI_HOTKEYSCAN_FNF2, | |
1610 | TP_ACPI_HOTKEYSCAN_FNF3, | |
1611 | TP_ACPI_HOTKEYSCAN_FNF4, | |
1612 | TP_ACPI_HOTKEYSCAN_FNF5, | |
1613 | TP_ACPI_HOTKEYSCAN_FNF6, | |
1614 | TP_ACPI_HOTKEYSCAN_FNF7, | |
1615 | TP_ACPI_HOTKEYSCAN_FNF8, | |
1616 | TP_ACPI_HOTKEYSCAN_FNF9, | |
1617 | TP_ACPI_HOTKEYSCAN_FNF10, | |
1618 | TP_ACPI_HOTKEYSCAN_FNF11, | |
1619 | TP_ACPI_HOTKEYSCAN_FNF12, | |
1620 | TP_ACPI_HOTKEYSCAN_FNBACKSPACE, | |
1621 | TP_ACPI_HOTKEYSCAN_FNINSERT, | |
1622 | TP_ACPI_HOTKEYSCAN_FNDELETE, | |
1623 | TP_ACPI_HOTKEYSCAN_FNHOME, | |
1624 | TP_ACPI_HOTKEYSCAN_FNEND, | |
1625 | TP_ACPI_HOTKEYSCAN_FNPAGEUP, | |
1626 | TP_ACPI_HOTKEYSCAN_FNPAGEDOWN, | |
1627 | TP_ACPI_HOTKEYSCAN_FNSPACE, | |
1628 | TP_ACPI_HOTKEYSCAN_VOLUMEUP, | |
1629 | TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, | |
1630 | TP_ACPI_HOTKEYSCAN_MUTE, | |
1631 | TP_ACPI_HOTKEYSCAN_THINKPAD, | |
1632 | }; | |
1633 | ||
01e88f25 HMH |
1634 | enum { /* Keys available through NVRAM polling */ |
1635 | TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U, | |
1636 | TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U, | |
1637 | }; | |
1638 | ||
1639 | enum { /* Positions of some of the keys in hotkey masks */ | |
1640 | TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7, | |
1641 | TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8, | |
1642 | TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12, | |
1643 | TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME, | |
1644 | TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND, | |
1645 | TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP, | |
1646 | TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE, | |
1647 | TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP, | |
1648 | TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, | |
1649 | TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE, | |
1650 | TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD, | |
1651 | }; | |
1652 | ||
1653 | enum { /* NVRAM to ACPI HKEY group map */ | |
1654 | TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK | | |
1655 | TP_ACPI_HKEY_ZOOM_MASK | | |
1656 | TP_ACPI_HKEY_DISPSWTCH_MASK | | |
1657 | TP_ACPI_HKEY_HIBERNATE_MASK, | |
1658 | TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK | | |
1659 | TP_ACPI_HKEY_BRGHTDWN_MASK, | |
1660 | TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK | | |
1661 | TP_ACPI_HKEY_VOLDWN_MASK | | |
1662 | TP_ACPI_HKEY_MUTE_MASK, | |
1663 | }; | |
1664 | ||
1665 | #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL | |
1666 | struct tp_nvram_state { | |
1667 | u16 thinkpad_toggle:1; | |
1668 | u16 zoom_toggle:1; | |
1669 | u16 display_toggle:1; | |
1670 | u16 thinklight_toggle:1; | |
1671 | u16 hibernate_toggle:1; | |
1672 | u16 displayexp_toggle:1; | |
1673 | u16 display_state:1; | |
1674 | u16 brightness_toggle:1; | |
1675 | u16 volume_toggle:1; | |
1676 | u16 mute:1; | |
1677 | ||
1678 | u8 brightness_level; | |
1679 | u8 volume_level; | |
1680 | }; | |
1681 | ||
1682 | static struct task_struct *tpacpi_hotkey_task; | |
1683 | static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */ | |
1684 | static int hotkey_poll_freq = 10; /* Hz */ | |
1685 | static struct mutex hotkey_thread_mutex; | |
1686 | static struct mutex hotkey_thread_data_mutex; | |
1687 | static unsigned int hotkey_config_change; | |
1688 | ||
1689 | #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ | |
1690 | ||
1691 | #define hotkey_source_mask 0U | |
1692 | ||
1693 | #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ | |
1694 | ||
f74a27d4 HMH |
1695 | static struct mutex hotkey_mutex; |
1696 | ||
a713b4d7 HMH |
1697 | static enum { /* Reasons for waking up */ |
1698 | TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */ | |
1699 | TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */ | |
1700 | TP_ACPI_WAKEUP_UNDOCK, /* Undock request */ | |
1701 | } hotkey_wakeup_reason; | |
1702 | ||
1703 | static int hotkey_autosleep_ack; | |
1704 | ||
ae92bd17 | 1705 | static u32 hotkey_orig_mask; |
9b010de5 | 1706 | static u32 hotkey_all_mask; |
6a38abbf | 1707 | static u32 hotkey_reserved_mask; |
b2c985e7 | 1708 | static u32 hotkey_mask; |
6a38abbf | 1709 | |
b21a15f6 HMH |
1710 | static unsigned int hotkey_report_mode; |
1711 | ||
edf0e0e5 | 1712 | static u16 *hotkey_keycode_map; |
78f81cc4 | 1713 | |
94954cc6 | 1714 | static struct attribute_set *hotkey_dev_attributes; |
a0416420 | 1715 | |
01e88f25 HMH |
1716 | #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
1717 | #define HOTKEY_CONFIG_CRITICAL_START \ | |
35ff8b9f HMH |
1718 | do { \ |
1719 | mutex_lock(&hotkey_thread_data_mutex); \ | |
1720 | hotkey_config_change++; \ | |
1721 | } while (0); | |
01e88f25 HMH |
1722 | #define HOTKEY_CONFIG_CRITICAL_END \ |
1723 | mutex_unlock(&hotkey_thread_data_mutex); | |
1724 | #else | |
1725 | #define HOTKEY_CONFIG_CRITICAL_START | |
1726 | #define HOTKEY_CONFIG_CRITICAL_END | |
1727 | #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ | |
1728 | ||
6c231bd5 HMH |
1729 | /* HKEY.MHKG() return bits */ |
1730 | #define TP_HOTKEY_TABLET_MASK (1 << 3) | |
1731 | ||
19d337df | 1732 | static int hotkey_get_wlsw(void) |
74941a69 | 1733 | { |
19d337df JB |
1734 | int status; |
1735 | ||
1736 | if (!tp_features.hotkey_wlsw) | |
1737 | return -ENODEV; | |
1738 | ||
a73f3091 | 1739 | #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
19d337df JB |
1740 | if (dbg_wlswemul) |
1741 | return (tpacpi_wlsw_emulstate) ? | |
1742 | TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; | |
a73f3091 | 1743 | #endif |
19d337df JB |
1744 | |
1745 | if (!acpi_evalf(hkey_handle, &status, "WLSW", "d")) | |
74941a69 | 1746 | return -EIO; |
19d337df JB |
1747 | |
1748 | return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; | |
74941a69 HMH |
1749 | } |
1750 | ||
6c231bd5 HMH |
1751 | static int hotkey_get_tablet_mode(int *status) |
1752 | { | |
1753 | int s; | |
1754 | ||
1755 | if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) | |
1756 | return -EIO; | |
1757 | ||
cee47f5a HMH |
1758 | *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); |
1759 | return 0; | |
6c231bd5 HMH |
1760 | } |
1761 | ||
b2c985e7 HMH |
1762 | /* |
1763 | * Call with hotkey_mutex held | |
1764 | */ | |
1765 | static int hotkey_mask_get(void) | |
1766 | { | |
01e88f25 HMH |
1767 | u32 m = 0; |
1768 | ||
b2c985e7 | 1769 | if (tp_features.hotkey_mask) { |
01e88f25 | 1770 | if (!acpi_evalf(hkey_handle, &m, "DHKN", "d")) |
b2c985e7 HMH |
1771 | return -EIO; |
1772 | } | |
01e88f25 | 1773 | hotkey_mask = m | (hotkey_source_mask & hotkey_mask); |
b2c985e7 HMH |
1774 | |
1775 | return 0; | |
1776 | } | |
1777 | ||
1778 | /* | |
1779 | * Call with hotkey_mutex held | |
1780 | */ | |
1781 | static int hotkey_mask_set(u32 mask) | |
1782 | { | |
1783 | int i; | |
1784 | int rc = 0; | |
1785 | ||
1786 | if (tp_features.hotkey_mask) { | |
92889022 HMH |
1787 | if (!tp_warned.hotkey_mask_ff && |
1788 | (mask == 0xffff || mask == 0xffffff || | |
1789 | mask == 0xffffffff)) { | |
1790 | tp_warned.hotkey_mask_ff = 1; | |
1791 | printk(TPACPI_NOTICE | |
1792 | "setting the hotkey mask to 0x%08x is likely " | |
1793 | "not the best way to go about it\n", mask); | |
1794 | printk(TPACPI_NOTICE | |
1795 | "please consider using the driver defaults, " | |
1796 | "and refer to up-to-date thinkpad-acpi " | |
1797 | "documentation\n"); | |
1798 | } | |
1799 | ||
01e88f25 | 1800 | HOTKEY_CONFIG_CRITICAL_START |
b2c985e7 HMH |
1801 | for (i = 0; i < 32; i++) { |
1802 | u32 m = 1 << i; | |
01e88f25 HMH |
1803 | /* enable in firmware mask only keys not in NVRAM |
1804 | * mode, but enable the key in the cached hotkey_mask | |
1805 | * regardless of mode, or the key will end up | |
1806 | * disabled by hotkey_mask_get() */ | |
b2c985e7 HMH |
1807 | if (!acpi_evalf(hkey_handle, |
1808 | NULL, "MHKM", "vdd", i + 1, | |
01e88f25 | 1809 | !!((mask & ~hotkey_source_mask) & m))) { |
b2c985e7 HMH |
1810 | rc = -EIO; |
1811 | break; | |
1812 | } else { | |
1813 | hotkey_mask = (hotkey_mask & ~m) | (mask & m); | |
1814 | } | |
1815 | } | |
01e88f25 | 1816 | HOTKEY_CONFIG_CRITICAL_END |
b2c985e7 HMH |
1817 | |
1818 | /* hotkey_mask_get must be called unconditionally below */ | |
01e88f25 HMH |
1819 | if (!hotkey_mask_get() && !rc && |
1820 | (hotkey_mask & ~hotkey_source_mask) != | |
1821 | (mask & ~hotkey_source_mask)) { | |
e0c7dfe7 | 1822 | printk(TPACPI_NOTICE |
b2c985e7 HMH |
1823 | "requested hot key mask 0x%08x, but " |
1824 | "firmware forced it to 0x%08x\n", | |
1825 | mask, hotkey_mask); | |
1826 | } | |
01e88f25 HMH |
1827 | } else { |
1828 | #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL | |
1829 | HOTKEY_CONFIG_CRITICAL_START | |
1830 | hotkey_mask = mask & hotkey_source_mask; | |
1831 | HOTKEY_CONFIG_CRITICAL_END | |
1832 | hotkey_mask_get(); | |
1833 | if (hotkey_mask != mask) { | |
e0c7dfe7 | 1834 | printk(TPACPI_NOTICE |
01e88f25 HMH |
1835 | "requested hot key mask 0x%08x, " |
1836 | "forced to 0x%08x (NVRAM poll mask is " | |
1837 | "0x%08x): no firmware mask support\n", | |
1838 | mask, hotkey_mask, hotkey_source_mask); | |
1839 | } | |
1840 | #else | |
1841 | hotkey_mask_get(); | |
1842 | rc = -ENXIO; | |
1843 | #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ | |
b2c985e7 HMH |
1844 | } |
1845 | ||
1846 | return rc; | |
1847 | } | |
1848 | ||
1849 | static int hotkey_status_get(int *status) | |
1850 | { | |
1851 | if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) | |
1852 | return -EIO; | |
1853 | ||
1854 | return 0; | |
1855 | } | |
1856 | ||
2586d566 | 1857 | static int hotkey_status_set(bool enable) |
b2c985e7 | 1858 | { |
2586d566 | 1859 | if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0)) |
b2c985e7 HMH |
1860 | return -EIO; |
1861 | ||
1862 | return 0; | |
1863 | } | |
1864 | ||
6c231bd5 | 1865 | static void tpacpi_input_send_tabletsw(void) |
b3ec6f91 | 1866 | { |
6c231bd5 | 1867 | int state; |
b3ec6f91 | 1868 | |
6c231bd5 HMH |
1869 | if (tp_features.hotkey_tablet && |
1870 | !hotkey_get_tablet_mode(&state)) { | |
1871 | mutex_lock(&tpacpi_inputdev_send_mutex); | |
b3ec6f91 | 1872 | |
6c231bd5 HMH |
1873 | input_report_switch(tpacpi_inputdev, |
1874 | SW_TABLET_MODE, !!state); | |
1875 | input_sync(tpacpi_inputdev); | |
1876 | ||
1877 | mutex_unlock(&tpacpi_inputdev_send_mutex); | |
1878 | } | |
b3ec6f91 HMH |
1879 | } |
1880 | ||
b7c8c200 HMH |
1881 | static void tpacpi_input_send_key(unsigned int scancode) |
1882 | { | |
1883 | unsigned int keycode; | |
1884 | ||
1885 | keycode = hotkey_keycode_map[scancode]; | |
1886 | ||
1887 | if (keycode != KEY_RESERVED) { | |
1888 | mutex_lock(&tpacpi_inputdev_send_mutex); | |
1889 | ||
1890 | input_report_key(tpacpi_inputdev, keycode, 1); | |
1891 | if (keycode == KEY_UNKNOWN) | |
1892 | input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, | |
1893 | scancode); | |
1894 | input_sync(tpacpi_inputdev); | |
1895 | ||
1896 | input_report_key(tpacpi_inputdev, keycode, 0); | |
1897 | if (keycode == KEY_UNKNOWN) | |
1898 | input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, | |
1899 | scancode); | |
1900 | input_sync(tpacpi_inputdev); | |
1901 | ||
1902 | mutex_unlock(&tpacpi_inputdev_send_mutex); | |
1903 | } | |
1904 | } | |
1905 | ||
01e88f25 HMH |
1906 | #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
1907 | static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; | |
1908 | ||
1909 | static void tpacpi_hotkey_send_key(unsigned int scancode) | |
1910 | { | |
1911 | tpacpi_input_send_key(scancode); | |
1912 | if (hotkey_report_mode < 2) { | |
1913 | acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device, | |
1914 | 0x80, 0x1001 + scancode); | |
1915 | } | |
1916 | } | |
1917 | ||
1918 | static void hotkey_read_nvram(struct tp_nvram_state *n, u32 m) | |
1919 | { | |
1920 | u8 d; | |
1921 | ||
1922 | if (m & TP_NVRAM_HKEY_GROUP_HK2) { | |
1923 | d = nvram_read_byte(TP_NVRAM_ADDR_HK2); | |
1924 | n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD); | |
1925 | n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM); | |
1926 | n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY); | |
1927 | n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE); | |
1928 | } | |
1929 | if (m & TP_ACPI_HKEY_THNKLGHT_MASK) { | |
1930 | d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT); | |
1931 | n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT); | |
1932 | } | |
1933 | if (m & TP_ACPI_HKEY_DISPXPAND_MASK) { | |
1934 | d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO); | |
1935 | n->displayexp_toggle = | |
1936 | !!(d & TP_NVRAM_MASK_HKT_DISPEXPND); | |
1937 | } | |
1938 | if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) { | |
1939 | d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); | |
1940 | n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) | |
1941 | >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; | |
1942 | n->brightness_toggle = | |
1943 | !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS); | |
1944 | } | |
1945 | if (m & TP_NVRAM_HKEY_GROUP_VOLUME) { | |
1946 | d = nvram_read_byte(TP_NVRAM_ADDR_MIXER); | |
1947 | n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME) | |
1948 | >> TP_NVRAM_POS_LEVEL_VOLUME; | |
1949 | n->mute = !!(d & TP_NVRAM_MASK_MUTE); | |
1950 | n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME); | |
1951 | } | |
1952 | } | |
1953 | ||
1954 | #define TPACPI_COMPARE_KEY(__scancode, __member) \ | |
35ff8b9f HMH |
1955 | do { \ |
1956 | if ((mask & (1 << __scancode)) && \ | |
1957 | oldn->__member != newn->__member) \ | |
1958 | tpacpi_hotkey_send_key(__scancode); \ | |
1959 | } while (0) | |
01e88f25 HMH |
1960 | |
1961 | #define TPACPI_MAY_SEND_KEY(__scancode) \ | |
1962 | do { if (mask & (1 << __scancode)) \ | |
1963 | tpacpi_hotkey_send_key(__scancode); } while (0) | |
1964 | ||
1965 | static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, | |
35ff8b9f | 1966 | struct tp_nvram_state *newn, |
01e88f25 HMH |
1967 | u32 mask) |
1968 | { | |
1969 | TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); | |
1970 | TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); | |
1971 | TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); | |
1972 | TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle); | |
1973 | ||
1974 | TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle); | |
1975 | ||
1976 | TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle); | |
1977 | ||
1978 | /* handle volume */ | |
1979 | if (oldn->volume_toggle != newn->volume_toggle) { | |
1980 | if (oldn->mute != newn->mute) { | |
1981 | TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); | |
1982 | } | |
1983 | if (oldn->volume_level > newn->volume_level) { | |
1984 | TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); | |
1985 | } else if (oldn->volume_level < newn->volume_level) { | |
1986 | TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); | |
1987 | } else if (oldn->mute == newn->mute) { | |
1988 | /* repeated key presses that didn't change state */ | |
1989 | if (newn->mute) { | |
1990 | TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); | |
1991 | } else if (newn->volume_level != 0) { | |
1992 | TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); | |
1993 | } else { | |
1994 | TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); | |
1995 | } | |
1996 | } | |
1997 | } | |
1998 | ||
1999 | /* handle brightness */ | |
2000 | if (oldn->brightness_toggle != newn->brightness_toggle) { | |
2001 | if (oldn->brightness_level < newn->brightness_level) { | |
2002 | TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); | |
2003 | } else if (oldn->brightness_level > newn->brightness_level) { | |
2004 | TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); | |
2005 | } else { | |
2006 | /* repeated key presses that didn't change state */ | |
2007 | if (newn->brightness_level != 0) { | |
2008 | TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); | |
2009 | } else { | |
2010 | TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); | |
2011 | } | |
2012 | } | |
2013 | } | |
2014 | } | |
2015 | ||
2016 | #undef TPACPI_COMPARE_KEY | |
2017 | #undef TPACPI_MAY_SEND_KEY | |
2018 | ||
2019 | static int hotkey_kthread(void *data) | |
2020 | { | |
2021 | struct tp_nvram_state s[2]; | |
2022 | u32 mask; | |
2023 | unsigned int si, so; | |
2024 | unsigned long t; | |
2025 | unsigned int change_detector, must_reset; | |
2026 | ||
2027 | mutex_lock(&hotkey_thread_mutex); | |
2028 | ||
2029 | if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) | |
2030 | goto exit; | |
2031 | ||
2032 | set_freezable(); | |
2033 | ||
2034 | so = 0; | |
2035 | si = 1; | |
2036 | t = 0; | |
2037 | ||
2038 | /* Initial state for compares */ | |
2039 | mutex_lock(&hotkey_thread_data_mutex); | |
2040 | change_detector = hotkey_config_change; | |
2041 | mask = hotkey_source_mask & hotkey_mask; | |
2042 | mutex_unlock(&hotkey_thread_data_mutex); | |
2043 | hotkey_read_nvram(&s[so], mask); | |
2044 | ||
2045 | while (!kthread_should_stop() && hotkey_poll_freq) { | |
2046 | if (t == 0) | |
2047 | t = 1000/hotkey_poll_freq; | |
2048 | t = msleep_interruptible(t); | |
2049 | if (unlikely(kthread_should_stop())) | |
2050 | break; | |
2051 | must_reset = try_to_freeze(); | |
2052 | if (t > 0 && !must_reset) | |
2053 | continue; | |
2054 | ||
2055 | mutex_lock(&hotkey_thread_data_mutex); | |
2056 | if (must_reset || hotkey_config_change != change_detector) { | |
2057 | /* forget old state on thaw or config change */ | |
2058 | si = so; | |
2059 | t = 0; | |
2060 | change_detector = hotkey_config_change; | |
2061 | } | |
2062 | mask = hotkey_source_mask & hotkey_mask; | |
2063 | mutex_unlock(&hotkey_thread_data_mutex); | |
2064 | ||
2065 | if (likely(mask)) { | |
2066 | hotkey_read_nvram(&s[si], mask); | |
2067 | if (likely(si != so)) { | |
2068 | hotkey_compare_and_issue_event(&s[so], &s[si], | |
35ff8b9f | 2069 | mask); |
01e88f25 HMH |
2070 | } |
2071 | } | |
2072 | ||
2073 | so = si; | |
2074 | si ^= 1; | |
2075 | } | |
2076 | ||
2077 | exit: | |
2078 | mutex_unlock(&hotkey_thread_mutex); | |
2079 | return 0; | |
2080 | } | |
2081 | ||
2082 | static void hotkey_poll_stop_sync(void) | |
2083 | { | |
2084 | if (tpacpi_hotkey_task) { | |
2085 | if (frozen(tpacpi_hotkey_task) || | |
2086 | freezing(tpacpi_hotkey_task)) | |
2087 | thaw_process(tpacpi_hotkey_task); | |
2088 | ||
2089 | kthread_stop(tpacpi_hotkey_task); | |
2090 | tpacpi_hotkey_task = NULL; | |
2091 | mutex_lock(&hotkey_thread_mutex); | |
2092 | /* at this point, the thread did exit */ | |
2093 | mutex_unlock(&hotkey_thread_mutex); | |
2094 | } | |
2095 | } | |
2096 | ||
2097 | /* call with hotkey_mutex held */ | |
2098 | static void hotkey_poll_setup(int may_warn) | |
2099 | { | |
2100 | if ((hotkey_source_mask & hotkey_mask) != 0 && | |
2101 | hotkey_poll_freq > 0 && | |
2102 | (tpacpi_inputdev->users > 0 || hotkey_report_mode < 2)) { | |
2103 | if (!tpacpi_hotkey_task) { | |
2104 | tpacpi_hotkey_task = kthread_run(hotkey_kthread, | |
95e57ab2 | 2105 | NULL, TPACPI_NVRAM_KTHREAD_NAME); |
01e88f25 HMH |
2106 | if (IS_ERR(tpacpi_hotkey_task)) { |
2107 | tpacpi_hotkey_task = NULL; | |
35ff8b9f HMH |
2108 | printk(TPACPI_ERR |
2109 | "could not create kernel thread " | |
01e88f25 HMH |
2110 | "for hotkey polling\n"); |
2111 | } | |
2112 | } | |
2113 | } else { | |
2114 | hotkey_poll_stop_sync(); | |
2115 | if (may_warn && | |
2116 | hotkey_source_mask != 0 && hotkey_poll_freq == 0) { | |
35ff8b9f HMH |
2117 | printk(TPACPI_NOTICE |
2118 | "hot keys 0x%08x require polling, " | |
01e88f25 HMH |
2119 | "which is currently disabled\n", |
2120 | hotkey_source_mask); | |
2121 | } | |
2122 | } | |
2123 | } | |
2124 | ||
2125 | static void hotkey_poll_setup_safe(int may_warn) | |
2126 | { | |
2127 | mutex_lock(&hotkey_mutex); | |
2128 | hotkey_poll_setup(may_warn); | |
2129 | mutex_unlock(&hotkey_mutex); | |
2130 | } | |
2131 | ||
1bc6b9cd HMH |
2132 | #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ |
2133 | ||
2134 | static void hotkey_poll_setup_safe(int __unused) | |
2135 | { | |
2136 | } | |
2137 | ||
2138 | #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ | |
2139 | ||
01e88f25 HMH |
2140 | static int hotkey_inputdev_open(struct input_dev *dev) |
2141 | { | |
2142 | switch (tpacpi_lifecycle) { | |
2143 | case TPACPI_LIFE_INIT: | |
2144 | /* | |
2145 | * hotkey_init will call hotkey_poll_setup_safe | |
2146 | * at the appropriate moment | |
2147 | */ | |
2148 | return 0; | |
2149 | case TPACPI_LIFE_EXITING: | |
2150 | return -EBUSY; | |
2151 | case TPACPI_LIFE_RUNNING: | |
2152 | hotkey_poll_setup_safe(0); | |
2153 | return 0; | |
2154 | } | |
2155 | ||
2156 | /* Should only happen if tpacpi_lifecycle is corrupt */ | |
2157 | BUG(); | |
2158 | return -EBUSY; | |
2159 | } | |
2160 | ||
2161 | static void hotkey_inputdev_close(struct input_dev *dev) | |
2162 | { | |
2163 | /* disable hotkey polling when possible */ | |
2164 | if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING) | |
2165 | hotkey_poll_setup_safe(0); | |
2166 | } | |
01e88f25 | 2167 | |
a0416420 HMH |
2168 | /* sysfs hotkey enable ------------------------------------------------- */ |
2169 | static ssize_t hotkey_enable_show(struct device *dev, | |
2170 | struct device_attribute *attr, | |
2171 | char *buf) | |
2172 | { | |
ae92bd17 | 2173 | int res, status; |
a0416420 | 2174 | |
2586d566 HMH |
2175 | printk_deprecated_attribute("hotkey_enable", |
2176 | "Hotkey reporting is always enabled"); | |
2177 | ||
b2c985e7 | 2178 | res = hotkey_status_get(&status); |
a0416420 HMH |
2179 | if (res) |
2180 | return res; | |
2181 | ||
2182 | return snprintf(buf, PAGE_SIZE, "%d\n", status); | |
2183 | } | |
2184 | ||
2185 | static ssize_t hotkey_enable_store(struct device *dev, | |
2186 | struct device_attribute *attr, | |
2187 | const char *buf, size_t count) | |
2188 | { | |
2189 | unsigned long t; | |
2586d566 HMH |
2190 | |
2191 | printk_deprecated_attribute("hotkey_enable", | |
2192 | "Hotkeys can be disabled through hotkey_mask"); | |
a0416420 HMH |
2193 | |
2194 | if (parse_strtoul(buf, 1, &t)) | |
2195 | return -EINVAL; | |
2196 | ||
2586d566 HMH |
2197 | if (t == 0) |
2198 | return -EPERM; | |
a0416420 | 2199 | |
2586d566 | 2200 | return count; |
a0416420 HMH |
2201 | } |
2202 | ||
2203 | static struct device_attribute dev_attr_hotkey_enable = | |
cc4c24e1 | 2204 | __ATTR(hotkey_enable, S_IWUSR | S_IRUGO, |
a0416420 HMH |
2205 | hotkey_enable_show, hotkey_enable_store); |
2206 | ||
2207 | /* sysfs hotkey mask --------------------------------------------------- */ | |
2208 | static ssize_t hotkey_mask_show(struct device *dev, | |
2209 | struct device_attribute *attr, | |
2210 | char *buf) | |
2211 | { | |
b2c985e7 | 2212 | int res; |
a0416420 | 2213 | |
7646ea88 | 2214 | if (mutex_lock_killable(&hotkey_mutex)) |
b2c985e7 HMH |
2215 | return -ERESTARTSYS; |
2216 | res = hotkey_mask_get(); | |
2217 | mutex_unlock(&hotkey_mutex); | |
a0416420 | 2218 | |
b2c985e7 HMH |
2219 | return (res)? |
2220 | res : snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_mask); | |
a0416420 HMH |
2221 | } |
2222 | ||
2223 | static ssize_t hotkey_mask_store(struct device *dev, | |
2224 | struct device_attribute *attr, | |
2225 | const char *buf, size_t count) | |
2226 | { | |
2227 | unsigned long t; | |
b2c985e7 | 2228 | int res; |
a0416420 | 2229 | |
ae92bd17 | 2230 | if (parse_strtoul(buf, 0xffffffffUL, &t)) |
a0416420 HMH |
2231 | return -EINVAL; |
2232 | ||
7646ea88 | 2233 | if (mutex_lock_killable(&hotkey_mutex)) |
b2c985e7 HMH |
2234 | return -ERESTARTSYS; |
2235 | ||
2236 | res = hotkey_mask_set(t); | |
01e88f25 HMH |
2237 | |
2238 | #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL | |
2239 | hotkey_poll_setup(1); | |
2240 | #endif | |
2241 | ||
b2c985e7 | 2242 | mutex_unlock(&hotkey_mutex); |
a0416420 | 2243 | |
56e2c200 HMH |
2244 | tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t); |
2245 | ||
a0416420 HMH |
2246 | return (res) ? res : count; |
2247 | } | |
2248 | ||
2249 | static struct device_attribute dev_attr_hotkey_mask = | |
cc4c24e1 | 2250 | __ATTR(hotkey_mask, S_IWUSR | S_IRUGO, |
a0416420 HMH |
2251 | hotkey_mask_show, hotkey_mask_store); |
2252 | ||
2253 | /* sysfs hotkey bios_enabled ------------------------------------------- */ | |
2254 | static ssize_t hotkey_bios_enabled_show(struct device *dev, | |
2255 | struct device_attribute *attr, | |
2256 | char *buf) | |
2257 | { | |
2586d566 | 2258 | return sprintf(buf, "0\n"); |
a0416420 HMH |
2259 | } |
2260 | ||
2261 | static struct device_attribute dev_attr_hotkey_bios_enabled = | |
cc4c24e1 | 2262 | __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL); |
a0416420 HMH |
2263 | |
2264 | /* sysfs hotkey bios_mask ---------------------------------------------- */ | |
2265 | static ssize_t hotkey_bios_mask_show(struct device *dev, | |
2266 | struct device_attribute *attr, | |
2267 | char *buf) | |
2268 | { | |
ae92bd17 | 2269 | return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask); |
a0416420 HMH |
2270 | } |
2271 | ||
2272 | static struct device_attribute dev_attr_hotkey_bios_mask = | |
cc4c24e1 | 2273 | __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL); |
a0416420 | 2274 | |
9b010de5 HMH |
2275 | /* sysfs hotkey all_mask ----------------------------------------------- */ |
2276 | static ssize_t hotkey_all_mask_show(struct device *dev, | |
2277 | struct device_attribute *attr, | |
2278 | char *buf) | |
2279 | { | |
01e88f25 HMH |
2280 | return snprintf(buf, PAGE_SIZE, "0x%08x\n", |
2281 | hotkey_all_mask | hotkey_source_mask); | |
9b010de5 HMH |
2282 | } |
2283 | ||
2284 | static struct device_attribute dev_attr_hotkey_all_mask = | |
2285 | __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL); | |
2286 | ||
2287 | /* sysfs hotkey recommended_mask --------------------------------------- */ | |
2288 | static ssize_t hotkey_recommended_mask_show(struct device *dev, | |
2289 | struct device_attribute *attr, | |
2290 | char *buf) | |
2291 | { | |
2292 | return snprintf(buf, PAGE_SIZE, "0x%08x\n", | |
01e88f25 HMH |
2293 | (hotkey_all_mask | hotkey_source_mask) |
2294 | & ~hotkey_reserved_mask); | |
9b010de5 HMH |
2295 | } |
2296 | ||
2297 | static struct device_attribute dev_attr_hotkey_recommended_mask = | |
2298 | __ATTR(hotkey_recommended_mask, S_IRUGO, | |
2299 | hotkey_recommended_mask_show, NULL); | |
2300 | ||
01e88f25 HMH |
2301 | #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
2302 | ||
2303 | /* sysfs hotkey hotkey_source_mask ------------------------------------- */ | |
2304 | static ssize_t hotkey_source_mask_show(struct device *dev, | |
2305 | struct device_attribute *attr, | |
2306 | char *buf) | |
2307 | { | |
2308 | return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask); | |
2309 | } | |
2310 | ||
2311 | static ssize_t hotkey_source_mask_store(struct device *dev, | |
2312 | struct device_attribute *attr, | |
2313 | const char *buf, size_t count) | |
2314 | { | |
2315 | unsigned long t; | |
2316 | ||
2317 | if (parse_strtoul(buf, 0xffffffffUL, &t) || | |
2318 | ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0)) | |
2319 | return -EINVAL; | |
2320 | ||
7646ea88 | 2321 | if (mutex_lock_killable(&hotkey_mutex)) |
01e88f25 HMH |
2322 | return -ERESTARTSYS; |
2323 | ||
2324 | HOTKEY_CONFIG_CRITICAL_START | |
2325 | hotkey_source_mask = t; | |
2326 | HOTKEY_CONFIG_CRITICAL_END | |
2327 | ||
2328 | hotkey_poll_setup(1); | |
2329 | ||
2330 | mutex_unlock(&hotkey_mutex); | |
2331 | ||
56e2c200 HMH |
2332 | tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t); |
2333 | ||
01e88f25 HMH |
2334 | return count; |
2335 | } | |
2336 | ||
2337 | static struct device_attribute dev_attr_hotkey_source_mask = | |
2338 | __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO, | |
2339 | hotkey_source_mask_show, hotkey_source_mask_store); | |
2340 | ||
2341 | /* sysfs hotkey hotkey_poll_freq --------------------------------------- */ | |
2342 | static ssize_t hotkey_poll_freq_show(struct device *dev, | |
2343 | struct device_attribute *attr, | |
2344 | char *buf) | |
2345 | { | |
2346 | return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq); | |
2347 | } | |
2348 | ||
2349 | static ssize_t hotkey_poll_freq_store(struct device *dev, | |
2350 | struct device_attribute *attr, | |
2351 | const char *buf, size_t count) | |
2352 | { | |
2353 | unsigned long t; | |
2354 | ||
2355 | if (parse_strtoul(buf, 25, &t)) | |
2356 | return -EINVAL; | |
2357 | ||
7646ea88 | 2358 | if (mutex_lock_killable(&hotkey_mutex)) |
01e88f25 HMH |
2359 | return -ERESTARTSYS; |
2360 | ||
2361 | hotkey_poll_freq = t; | |
2362 | ||
2363 | hotkey_poll_setup(1); | |
2364 | mutex_unlock(&hotkey_mutex); | |
2365 | ||
56e2c200 HMH |
2366 | tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t); |
2367 | ||
01e88f25 HMH |
2368 | return count; |
2369 | } | |
2370 | ||
2371 | static struct device_attribute dev_attr_hotkey_poll_freq = | |
2372 | __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO, | |
2373 | hotkey_poll_freq_show, hotkey_poll_freq_store); | |
2374 | ||
2375 | #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ | |
2376 | ||
50ebec09 | 2377 | /* sysfs hotkey radio_sw (pollable) ------------------------------------ */ |
74941a69 HMH |
2378 | static ssize_t hotkey_radio_sw_show(struct device *dev, |
2379 | struct device_attribute *attr, | |
2380 | char *buf) | |
2381 | { | |
19d337df JB |
2382 | int res; |
2383 | res = hotkey_get_wlsw(); | |
74941a69 HMH |
2384 | if (res < 0) |
2385 | return res; | |
2386 | ||
19d337df JB |
2387 | /* Opportunistic update */ |
2388 | tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF)); | |
2389 | ||
2390 | return snprintf(buf, PAGE_SIZE, "%d\n", | |
2391 | (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1); | |
74941a69 HMH |
2392 | } |
2393 | ||
2394 | static struct device_attribute dev_attr_hotkey_radio_sw = | |
2395 | __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL); | |
2396 | ||
50ebec09 HMH |
2397 | static void hotkey_radio_sw_notify_change(void) |
2398 | { | |
2399 | if (tp_features.hotkey_wlsw) | |
2400 | sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, | |
2401 | "hotkey_radio_sw"); | |
2402 | } | |
2403 | ||
6c231bd5 HMH |
2404 | /* sysfs hotkey tablet mode (pollable) --------------------------------- */ |
2405 | static ssize_t hotkey_tablet_mode_show(struct device *dev, | |
2406 | struct device_attribute *attr, | |
2407 | char *buf) | |
2408 | { | |
2409 | int res, s; | |
2410 | res = hotkey_get_tablet_mode(&s); | |
2411 | if (res < 0) | |
2412 | return res; | |
2413 | ||
2414 | return snprintf(buf, PAGE_SIZE, "%d\n", !!s); | |
2415 | } | |
2416 | ||
2417 | static struct device_attribute dev_attr_hotkey_tablet_mode = | |
2418 | __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL); | |
2419 | ||
2420 | static void hotkey_tablet_mode_notify_change(void) | |
2421 | { | |
2422 | if (tp_features.hotkey_tablet) | |
2423 | sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, | |
2424 | "hotkey_tablet_mode"); | |
2425 | } | |
2426 | ||
ff80f137 HMH |
2427 | /* sysfs hotkey report_mode -------------------------------------------- */ |
2428 | static ssize_t hotkey_report_mode_show(struct device *dev, | |
2429 | struct device_attribute *attr, | |
2430 | char *buf) | |
2431 | { | |
2432 | return snprintf(buf, PAGE_SIZE, "%d\n", | |
2433 | (hotkey_report_mode != 0) ? hotkey_report_mode : 1); | |
2434 | } | |
2435 | ||
2436 | static struct device_attribute dev_attr_hotkey_report_mode = | |
2437 | __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL); | |
2438 | ||
50ebec09 | 2439 | /* sysfs wakeup reason (pollable) -------------------------------------- */ |
a713b4d7 HMH |
2440 | static ssize_t hotkey_wakeup_reason_show(struct device *dev, |
2441 | struct device_attribute *attr, | |
2442 | char *buf) | |
2443 | { | |
2444 | return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason); | |
2445 | } | |
2446 | ||
2447 | static struct device_attribute dev_attr_hotkey_wakeup_reason = | |
2448 | __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL); | |
2449 | ||
1d5a2b54 | 2450 | static void hotkey_wakeup_reason_notify_change(void) |
50ebec09 HMH |
2451 | { |
2452 | if (tp_features.hotkey_mask) | |
2453 | sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, | |
2454 | "wakeup_reason"); | |
2455 | } | |
2456 | ||
2457 | /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */ | |
a713b4d7 HMH |
2458 | static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev, |
2459 | struct device_attribute *attr, | |
2460 | char *buf) | |
2461 | { | |
2462 | return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack); | |
2463 | } | |
2464 | ||
2465 | static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete = | |
2466 | __ATTR(wakeup_hotunplug_complete, S_IRUGO, | |
2467 | hotkey_wakeup_hotunplug_complete_show, NULL); | |
2468 | ||
1d5a2b54 | 2469 | static void hotkey_wakeup_hotunplug_complete_notify_change(void) |
50ebec09 HMH |
2470 | { |
2471 | if (tp_features.hotkey_mask) | |
2472 | sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, | |
2473 | "wakeup_hotunplug_complete"); | |
2474 | } | |
2475 | ||
a0416420 HMH |
2476 | /* --------------------------------------------------------------------- */ |
2477 | ||
ff80f137 HMH |
2478 | static struct attribute *hotkey_attributes[] __initdata = { |
2479 | &dev_attr_hotkey_enable.attr, | |
01e88f25 | 2480 | &dev_attr_hotkey_bios_enabled.attr, |
ff80f137 | 2481 | &dev_attr_hotkey_report_mode.attr, |
01e88f25 HMH |
2482 | #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
2483 | &dev_attr_hotkey_mask.attr, | |
2484 | &dev_attr_hotkey_all_mask.attr, | |
2485 | &dev_attr_hotkey_recommended_mask.attr, | |
2486 | &dev_attr_hotkey_source_mask.attr, | |
2487 | &dev_attr_hotkey_poll_freq.attr, | |
2488 | #endif | |
ff80f137 HMH |
2489 | }; |
2490 | ||
2491 | static struct attribute *hotkey_mask_attributes[] __initdata = { | |
a0416420 | 2492 | &dev_attr_hotkey_bios_mask.attr, |
01e88f25 HMH |
2493 | #ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
2494 | &dev_attr_hotkey_mask.attr, | |
9b010de5 HMH |
2495 | &dev_attr_hotkey_all_mask.attr, |
2496 | &dev_attr_hotkey_recommended_mask.attr, | |
01e88f25 | 2497 | #endif |
a713b4d7 HMH |
2498 | &dev_attr_hotkey_wakeup_reason.attr, |
2499 | &dev_attr_hotkey_wakeup_hotunplug_complete.attr, | |
a0416420 HMH |
2500 | }; |
2501 | ||
19d337df JB |
2502 | /* |
2503 | * Sync both the hw and sw blocking state of all switches | |
2504 | */ | |
733e27c1 HMH |
2505 | static void tpacpi_send_radiosw_update(void) |
2506 | { | |
2507 | int wlsw; | |
2508 | ||
19d337df JB |
2509 | /* |
2510 | * We must sync all rfkill controllers *before* issuing any | |
2511 | * rfkill input events, or we will race the rfkill core input | |
2512 | * handler. | |
2513 | * | |
2514 | * tpacpi_inputdev_send_mutex works as a syncronization point | |
2515 | * for the above. | |
2516 | * | |
2517 | * We optimize to avoid numerous calls to hotkey_get_wlsw. | |
2518 | */ | |
2519 | ||
2520 | wlsw = hotkey_get_wlsw(); | |
2521 | ||
2522 | /* Sync hw blocking state first if it is hw-blocked */ | |
2523 | if (wlsw == TPACPI_RFK_RADIO_OFF) | |
2524 | tpacpi_rfk_update_hwblock_state(true); | |
0e74dc26 | 2525 | |
19d337df JB |
2526 | /* Sync sw blocking state */ |
2527 | tpacpi_rfk_update_swstate_all(); | |
2528 | ||
2529 | /* Sync hw blocking state last if it is hw-unblocked */ | |
2530 | if (wlsw == TPACPI_RFK_RADIO_ON) | |
2531 | tpacpi_rfk_update_hwblock_state(false); | |
2532 | ||
2533 | /* Issue rfkill input event for WLSW switch */ | |
2534 | if (!(wlsw < 0)) { | |
733e27c1 HMH |
2535 | mutex_lock(&tpacpi_inputdev_send_mutex); |
2536 | ||
2537 | input_report_switch(tpacpi_inputdev, | |
19d337df | 2538 | SW_RFKILL_ALL, (wlsw > 0)); |
733e27c1 HMH |
2539 | input_sync(tpacpi_inputdev); |
2540 | ||
2541 | mutex_unlock(&tpacpi_inputdev_send_mutex); | |
2542 | } | |
19d337df JB |
2543 | |
2544 | /* | |
2545 | * this can be unconditional, as we will poll state again | |
2546 | * if userspace uses the notify to read data | |
2547 | */ | |
733e27c1 HMH |
2548 | hotkey_radio_sw_notify_change(); |
2549 | } | |
2550 | ||
9c0a76e1 HMH |
2551 | static void hotkey_exit(void) |
2552 | { | |
2553 | #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL | |
2554 | hotkey_poll_stop_sync(); | |
2555 | #endif | |
2556 | ||
2557 | if (hotkey_dev_attributes) | |
2558 | delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); | |
2559 | ||
2560 | kfree(hotkey_keycode_map); | |
2561 | ||
2562 | if (tp_features.hotkey) { | |
56e2c200 | 2563 | dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY, |
9c0a76e1 HMH |
2564 | "restoring original hot key mask\n"); |
2565 | /* no short-circuit boolean operator below! */ | |
2566 | if ((hotkey_mask_set(hotkey_orig_mask) | | |
2586d566 | 2567 | hotkey_status_set(false)) != 0) |
9c0a76e1 HMH |
2568 | printk(TPACPI_ERR |
2569 | "failed to restore hot key mask " | |
2570 | "to BIOS defaults\n"); | |
2571 | } | |
2572 | } | |
2573 | ||
a5763f22 | 2574 | static int __init hotkey_init(struct ibm_init_struct *iibm) |
56b6aeb0 | 2575 | { |
0f089147 HMH |
2576 | /* Requirements for changing the default keymaps: |
2577 | * | |
2578 | * 1. Many of the keys are mapped to KEY_RESERVED for very | |
2579 | * good reasons. Do not change them unless you have deep | |
2580 | * knowledge on the IBM and Lenovo ThinkPad firmware for | |
2581 | * the various ThinkPad models. The driver behaves | |
2582 | * differently for KEY_RESERVED: such keys have their | |
2583 | * hot key mask *unset* in mask_recommended, and also | |
2584 | * in the initial hot key mask programmed into the | |
2585 | * firmware at driver load time, which means the firm- | |
2586 | * ware may react very differently if you change them to | |
2587 | * something else; | |
2588 | * | |
2589 | * 2. You must be subscribed to the linux-thinkpad and | |
2590 | * ibm-acpi-devel mailing lists, and you should read the | |
2591 | * list archives since 2007 if you want to change the | |
2592 | * keymaps. This requirement exists so that you will | |
2593 | * know the past history of problems with the thinkpad- | |
2594 | * acpi driver keymaps, and also that you will be | |
2595 | * listening to any bug reports; | |
2596 | * | |
2597 | * 3. Do not send thinkpad-acpi specific patches directly to | |
2598 | * for merging, *ever*. Send them to the linux-acpi | |
2599 | * mailinglist for comments. Merging is to be done only | |
2600 | * through acpi-test and the ACPI maintainer. | |
2601 | * | |
2602 | * If the above is too much to ask, don't change the keymap. | |
2603 | * Ask the thinkpad-acpi maintainer to do it, instead. | |
2604 | */ | |
edf0e0e5 HMH |
2605 | static u16 ibm_keycode_map[] __initdata = { |
2606 | /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ | |
2607 | KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP, | |
2608 | KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, | |
2609 | KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, | |
0f089147 HMH |
2610 | |
2611 | /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ | |
edf0e0e5 HMH |
2612 | KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ |
2613 | KEY_UNKNOWN, /* 0x0D: FN+INSERT */ | |
2614 | KEY_UNKNOWN, /* 0x0E: FN+DELETE */ | |
0f089147 HMH |
2615 | |
2616 | /* brightness: firmware always reacts to them, unless | |
2617 | * X.org did some tricks in the radeon BIOS scratch | |
2618 | * registers of *some* models */ | |
e927c08d | 2619 | KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ |
e927c08d | 2620 | KEY_RESERVED, /* 0x10: FN+END (brightness down) */ |
0f089147 HMH |
2621 | |
2622 | /* Thinklight: firmware always react to it */ | |
edf0e0e5 | 2623 | KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ |
0f089147 | 2624 | |
edf0e0e5 HMH |
2625 | KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ |
2626 | KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ | |
0f089147 HMH |
2627 | |
2628 | /* Volume: firmware always react to it and reprograms | |
2629 | * the built-in *extra* mixer. Never map it to control | |
2630 | * another mixer by default. */ | |
e927c08d HMH |
2631 | KEY_RESERVED, /* 0x14: VOLUME UP */ |
2632 | KEY_RESERVED, /* 0x15: VOLUME DOWN */ | |
2633 | KEY_RESERVED, /* 0x16: MUTE */ | |
0f089147 | 2634 | |
edf0e0e5 | 2635 | KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ |
0f089147 | 2636 | |
edf0e0e5 HMH |
2637 | /* (assignments unknown, please report if found) */ |
2638 | KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, | |
2639 | KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, | |
2640 | }; | |
2641 | static u16 lenovo_keycode_map[] __initdata = { | |
2642 | /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ | |
2643 | KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP, | |
2644 | KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, | |
2645 | KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, | |
0f089147 HMH |
2646 | |
2647 | /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ | |
edf0e0e5 HMH |
2648 | KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ |
2649 | KEY_UNKNOWN, /* 0x0D: FN+INSERT */ | |
2650 | KEY_UNKNOWN, /* 0x0E: FN+DELETE */ | |
0f089147 | 2651 | |
b5972796 HMH |
2652 | /* These either have to go through ACPI video, or |
2653 | * act like in the IBM ThinkPads, so don't ever | |
2654 | * enable them by default */ | |
56a185b4 | 2655 | KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ |
56a185b4 | 2656 | KEY_RESERVED, /* 0x10: FN+END (brightness down) */ |
0f089147 | 2657 | |
edf0e0e5 | 2658 | KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ |
0f089147 | 2659 | |
edf0e0e5 HMH |
2660 | KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ |
2661 | KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ | |
0f089147 HMH |
2662 | |
2663 | /* Volume: z60/z61, T60 (BIOS version?): firmware always | |
2664 | * react to it and reprograms the built-in *extra* mixer. | |
2665 | * Never map it to control another mixer by default. | |
2666 | * | |
2667 | * T60?, T61, R60?, R61: firmware and EC tries to send | |
2668 | * these over the regular keyboard, so these are no-ops, | |
2669 | * but there are still weird bugs re. MUTE, so do not | |
2670 | * change unless you get test reports from all Lenovo | |
2671 | * models. May cause the BIOS to interfere with the | |
2672 | * HDA mixer. | |
2673 | */ | |
e927c08d HMH |
2674 | KEY_RESERVED, /* 0x14: VOLUME UP */ |
2675 | KEY_RESERVED, /* 0x15: VOLUME DOWN */ | |
2676 | KEY_RESERVED, /* 0x16: MUTE */ | |
0f089147 | 2677 | |
edf0e0e5 | 2678 | KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ |
0f089147 | 2679 | |
edf0e0e5 HMH |
2680 | /* (assignments unknown, please report if found) */ |
2681 | KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, | |
2682 | KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, | |
2683 | }; | |
2684 | ||
2685 | #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map) | |
2686 | #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map) | |
2687 | #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0]) | |
2688 | ||
6a38abbf | 2689 | int res, i; |
74941a69 | 2690 | int status; |
1b6521dc | 2691 | int hkeyv; |
b86c4722 | 2692 | |
56e2c200 HMH |
2693 | vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, |
2694 | "initializing hotkey subdriver\n"); | |
fe08bc4b | 2695 | |
6a38abbf | 2696 | BUG_ON(!tpacpi_inputdev); |
01e88f25 HMH |
2697 | BUG_ON(tpacpi_inputdev->open != NULL || |
2698 | tpacpi_inputdev->close != NULL); | |
6a38abbf | 2699 | |
e0c7dfe7 | 2700 | TPACPI_ACPIHANDLE_INIT(hkey); |
40ca9fdf | 2701 | mutex_init(&hotkey_mutex); |
5fba344c | 2702 | |
01e88f25 HMH |
2703 | #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
2704 | mutex_init(&hotkey_thread_mutex); | |
2705 | mutex_init(&hotkey_thread_data_mutex); | |
2706 | #endif | |
2707 | ||
56b6aeb0 | 2708 | /* hotkey not supported on 570 */ |
d8fd94d9 | 2709 | tp_features.hotkey = hkey_handle != NULL; |
56b6aeb0 | 2710 | |
56e2c200 HMH |
2711 | vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, |
2712 | "hotkeys are %s\n", | |
d8fd94d9 | 2713 | str_supported(tp_features.hotkey)); |
fe08bc4b | 2714 | |
9c0a76e1 HMH |
2715 | if (!tp_features.hotkey) |
2716 | return 1; | |
a0416420 | 2717 | |
d64c81c4 HMH |
2718 | tpacpi_disable_brightness_delay(); |
2719 | ||
9c0a76e1 HMH |
2720 | hotkey_dev_attributes = create_attr_set(13, NULL); |
2721 | if (!hotkey_dev_attributes) | |
2722 | return -ENOMEM; | |
2723 | res = add_many_to_attr_set(hotkey_dev_attributes, | |
2724 | hotkey_attributes, | |
2725 | ARRAY_SIZE(hotkey_attributes)); | |
2726 | if (res) | |
2727 | goto err_exit; | |
2728 | ||
2729 | /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, | |
2730 | A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking | |
2731 | for HKEY interface version 0x100 */ | |
2732 | if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { | |
2733 | if ((hkeyv >> 8) != 1) { | |
2734 | printk(TPACPI_ERR "unknown version of the " | |
2735 | "HKEY interface: 0x%x\n", hkeyv); | |
2736 | printk(TPACPI_ERR "please report this to %s\n", | |
2737 | TPACPI_MAIL); | |
2738 | } else { | |
2739 | /* | |
2740 | * MHKV 0x100 in A31, R40, R40e, | |
2741 | * T4x, X31, and later | |
2742 | */ | |
2743 | tp_features.hotkey_mask = 1; | |
56e2c200 HMH |
2744 | vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, |
2745 | "firmware HKEY interface version: 0x%x\n", | |
2746 | hkeyv); | |
1b6521dc | 2747 | } |
9c0a76e1 | 2748 | } |
56b6aeb0 | 2749 | |
56e2c200 HMH |
2750 | vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, |
2751 | "hotkey masks are %s\n", | |
9c0a76e1 | 2752 | str_supported(tp_features.hotkey_mask)); |
fe08bc4b | 2753 | |
9c0a76e1 HMH |
2754 | if (tp_features.hotkey_mask) { |
2755 | if (!acpi_evalf(hkey_handle, &hotkey_all_mask, | |
2756 | "MHKA", "qd")) { | |
2757 | printk(TPACPI_ERR | |
2758 | "missing MHKA handler, " | |
2759 | "please report this to %s\n", | |
2760 | TPACPI_MAIL); | |
2761 | /* FN+F12, FN+F4, FN+F3 */ | |
2762 | hotkey_all_mask = 0x080cU; | |
9b010de5 | 2763 | } |
9c0a76e1 | 2764 | } |
9b010de5 | 2765 | |
9c0a76e1 HMH |
2766 | /* hotkey_source_mask *must* be zero for |
2767 | * the first hotkey_mask_get */ | |
9c0a76e1 HMH |
2768 | if (tp_features.hotkey_mask) { |
2769 | res = hotkey_mask_get(); | |
2770 | if (res) | |
2771 | goto err_exit; | |
2772 | ||
2773 | hotkey_orig_mask = hotkey_mask; | |
2774 | res = add_many_to_attr_set( | |
2775 | hotkey_dev_attributes, | |
2776 | hotkey_mask_attributes, | |
2777 | ARRAY_SIZE(hotkey_mask_attributes)); | |
2778 | if (res) | |
2779 | goto err_exit; | |
2780 | } | |
74941a69 | 2781 | |
01e88f25 | 2782 | #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
9c0a76e1 HMH |
2783 | if (tp_features.hotkey_mask) { |
2784 | hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK | |
2785 | & ~hotkey_all_mask; | |
2786 | } else { | |
2787 | hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK; | |
2788 | } | |
01e88f25 | 2789 | |
56e2c200 | 2790 | vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, |
9c0a76e1 HMH |
2791 | "hotkey source mask 0x%08x, polling freq %d\n", |
2792 | hotkey_source_mask, hotkey_poll_freq); | |
01e88f25 HMH |
2793 | #endif |
2794 | ||
a73f3091 HMH |
2795 | #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
2796 | if (dbg_wlswemul) { | |
2797 | tp_features.hotkey_wlsw = 1; | |
2798 | printk(TPACPI_INFO | |
2799 | "radio switch emulation enabled\n"); | |
2800 | } else | |
2801 | #endif | |
9c0a76e1 HMH |
2802 | /* Not all thinkpads have a hardware radio switch */ |
2803 | if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { | |
2804 | tp_features.hotkey_wlsw = 1; | |
2805 | printk(TPACPI_INFO | |
2806 | "radio switch found; radios are %s\n", | |
2807 | enabled(status, 0)); | |
3a872080 HMH |
2808 | } |
2809 | if (tp_features.hotkey_wlsw) | |
9c0a76e1 HMH |
2810 | res = add_to_attr_set(hotkey_dev_attributes, |
2811 | &dev_attr_hotkey_radio_sw.attr); | |
74941a69 | 2812 | |
9c0a76e1 HMH |
2813 | /* For X41t, X60t, X61t Tablets... */ |
2814 | if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) { | |
2815 | tp_features.hotkey_tablet = 1; | |
2816 | printk(TPACPI_INFO | |
2817 | "possible tablet mode switch found; " | |
2818 | "ThinkPad in %s mode\n", | |
2819 | (status & TP_HOTKEY_TABLET_MASK)? | |
2820 | "tablet" : "laptop"); | |
2821 | res = add_to_attr_set(hotkey_dev_attributes, | |
2822 | &dev_attr_hotkey_tablet_mode.attr); | |
2823 | } | |
6c231bd5 | 2824 | |
9c0a76e1 HMH |
2825 | if (!res) |
2826 | res = register_attr_set_with_sysfs( | |
2827 | hotkey_dev_attributes, | |
2828 | &tpacpi_pdev->dev.kobj); | |
2829 | if (res) | |
2830 | goto err_exit; | |
6a38abbf | 2831 | |
9c0a76e1 | 2832 | /* Set up key map */ |
edf0e0e5 | 2833 | |
9c0a76e1 HMH |
2834 | hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE, |
2835 | GFP_KERNEL); | |
2836 | if (!hotkey_keycode_map) { | |
2837 | printk(TPACPI_ERR | |
2838 | "failed to allocate memory for key map\n"); | |
2839 | res = -ENOMEM; | |
2840 | goto err_exit; | |
2841 | } | |
edf0e0e5 | 2842 | |
9c0a76e1 | 2843 | if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) { |
56e2c200 | 2844 | dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, |
9c0a76e1 HMH |
2845 | "using Lenovo default hot key map\n"); |
2846 | memcpy(hotkey_keycode_map, &lenovo_keycode_map, | |
2847 | TPACPI_HOTKEY_MAP_SIZE); | |
2848 | } else { | |
56e2c200 | 2849 | dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, |
9c0a76e1 HMH |
2850 | "using IBM default hot key map\n"); |
2851 | memcpy(hotkey_keycode_map, &ibm_keycode_map, | |
2852 | TPACPI_HOTKEY_MAP_SIZE); | |
2853 | } | |
edf0e0e5 | 2854 | |
9c0a76e1 HMH |
2855 | set_bit(EV_KEY, tpacpi_inputdev->evbit); |
2856 | set_bit(EV_MSC, tpacpi_inputdev->evbit); | |
2857 | set_bit(MSC_SCAN, tpacpi_inputdev->mscbit); | |
2858 | tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE; | |
2859 | tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN; | |
2860 | tpacpi_inputdev->keycode = hotkey_keycode_map; | |
2861 | for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) { | |
2862 | if (hotkey_keycode_map[i] != KEY_RESERVED) { | |
2863 | set_bit(hotkey_keycode_map[i], | |
2864 | tpacpi_inputdev->keybit); | |
2865 | } else { | |
2866 | if (i < sizeof(hotkey_reserved_mask)*8) | |
2867 | hotkey_reserved_mask |= 1 << i; | |
6a38abbf | 2868 | } |
9c0a76e1 | 2869 | } |
6a38abbf | 2870 | |
9c0a76e1 HMH |
2871 | if (tp_features.hotkey_wlsw) { |
2872 | set_bit(EV_SW, tpacpi_inputdev->evbit); | |
2873 | set_bit(SW_RFKILL_ALL, tpacpi_inputdev->swbit); | |
2874 | } | |
2875 | if (tp_features.hotkey_tablet) { | |
2876 | set_bit(EV_SW, tpacpi_inputdev->evbit); | |
2877 | set_bit(SW_TABLET_MODE, tpacpi_inputdev->swbit); | |
2878 | } | |
5c29d58f | 2879 | |
9c0a76e1 HMH |
2880 | /* Do not issue duplicate brightness change events to |
2881 | * userspace */ | |
2882 | if (!tp_features.bright_acpimode) | |
2883 | /* update bright_acpimode... */ | |
2884 | tpacpi_check_std_acpi_brightness_support(); | |
b5972796 | 2885 | |
9c0a76e1 HMH |
2886 | if (tp_features.bright_acpimode) { |
2887 | printk(TPACPI_INFO | |
2888 | "This ThinkPad has standard ACPI backlight " | |
2889 | "brightness control, supported by the ACPI " | |
2890 | "video driver\n"); | |
2891 | printk(TPACPI_NOTICE | |
2892 | "Disabling thinkpad-acpi brightness events " | |
2893 | "by default...\n"); | |
2894 | ||
2895 | /* The hotkey_reserved_mask change below is not | |
2896 | * necessary while the keys are at KEY_RESERVED in the | |
2897 | * default map, but better safe than sorry, leave it | |
2898 | * here as a marker of what we have to do, especially | |
2899 | * when we finally become able to set this at runtime | |
2900 | * on response to X.org requests */ | |
2901 | hotkey_reserved_mask |= | |
2902 | (1 << TP_ACPI_HOTKEYSCAN_FNHOME) | |
2903 | | (1 << TP_ACPI_HOTKEYSCAN_FNEND); | |
2904 | } | |
ff80f137 | 2905 | |
56e2c200 HMH |
2906 | dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, |
2907 | "enabling firmware HKEY event interface...\n"); | |
2586d566 | 2908 | res = hotkey_status_set(true); |
9c0a76e1 HMH |
2909 | if (res) { |
2910 | hotkey_exit(); | |
2911 | return res; | |
2912 | } | |
2913 | res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask) | |
2914 | & ~hotkey_reserved_mask) | |
2915 | | hotkey_orig_mask); | |
2916 | if (res < 0 && res != -ENXIO) { | |
2917 | hotkey_exit(); | |
2918 | return res; | |
2919 | } | |
01e88f25 | 2920 | |
56e2c200 HMH |
2921 | dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, |
2922 | "legacy ibm/hotkey event reporting over procfs %s\n", | |
9c0a76e1 HMH |
2923 | (hotkey_report_mode < 2) ? |
2924 | "enabled" : "disabled"); | |
01e88f25 | 2925 | |
9c0a76e1 HMH |
2926 | tpacpi_inputdev->open = &hotkey_inputdev_open; |
2927 | tpacpi_inputdev->close = &hotkey_inputdev_close; | |
56b6aeb0 | 2928 | |
9c0a76e1 | 2929 | hotkey_poll_setup_safe(1); |
733e27c1 | 2930 | tpacpi_send_radiosw_update(); |
9c0a76e1 | 2931 | tpacpi_input_send_tabletsw(); |
56b6aeb0 | 2932 | |
9c0a76e1 | 2933 | return 0; |
01e88f25 | 2934 | |
9c0a76e1 HMH |
2935 | err_exit: |
2936 | delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); | |
2937 | hotkey_dev_attributes = NULL; | |
a0416420 | 2938 | |
9c0a76e1 | 2939 | return (res < 0)? res : 1; |
56b6aeb0 HMH |
2940 | } |
2941 | ||
3827e7a3 HMH |
2942 | static bool hotkey_notify_hotkey(const u32 hkey, |
2943 | bool *send_acpi_ev, | |
2944 | bool *ignore_acpi_ev) | |
2945 | { | |
2946 | /* 0x1000-0x1FFF: key presses */ | |
2947 | unsigned int scancode = hkey & 0xfff; | |
2948 | *send_acpi_ev = true; | |
2949 | *ignore_acpi_ev = false; | |
2950 | ||
2951 | if (scancode > 0 && scancode < 0x21) { | |
2952 | scancode--; | |
2953 | if (!(hotkey_source_mask & (1 << scancode))) { | |
2954 | tpacpi_input_send_key(scancode); | |
2955 | *send_acpi_ev = false; | |
2956 | } else { | |
2957 | *ignore_acpi_ev = true; | |
2958 | } | |
2959 | return true; | |
2960 | } | |
2961 | return false; | |
2962 | } | |
2963 | ||
2964 | static bool hotkey_notify_wakeup(const u32 hkey, | |
2965 | bool *send_acpi_ev, | |
2966 | bool *ignore_acpi_ev) | |
2967 | { | |
2968 | /* 0x2000-0x2FFF: Wakeup reason */ | |
2969 | *send_acpi_ev = true; | |
2970 | *ignore_acpi_ev = false; | |
2971 | ||
2972 | switch (hkey) { | |
2973 | case 0x2304: /* suspend, undock */ | |
2974 | case 0x2404: /* hibernation, undock */ | |
2975 | hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK; | |
2976 | *ignore_acpi_ev = true; | |
2977 | break; | |
2978 | ||
2979 | case 0x2305: /* suspend, bay eject */ | |
2980 | case 0x2405: /* hibernation, bay eject */ | |
2981 | hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ; | |
2982 | *ignore_acpi_ev = true; | |
2983 | break; | |
2984 | ||
106b4e66 HMH |
2985 | case 0x2313: /* Battery on critical low level (S3) */ |
2986 | case 0x2413: /* Battery on critical low level (S4) */ | |
2987 | printk(TPACPI_ALERT | |
2988 | "EMERGENCY WAKEUP: battery almost empty\n"); | |
2989 | /* how to auto-heal: */ | |
2990 | /* 2313: woke up from S3, go to S4/S5 */ | |
2991 | /* 2413: woke up from S4, go to S5 */ | |
2992 | break; | |
2993 | ||
3827e7a3 HMH |
2994 | default: |
2995 | return false; | |
2996 | } | |
2997 | ||
2998 | if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) { | |
2999 | printk(TPACPI_INFO | |
3000 | "woke up due to a hot-unplug " | |
3001 | "request...\n"); | |
3002 | hotkey_wakeup_reason_notify_change(); | |
3003 | } | |
3004 | return true; | |
3005 | } | |
3006 | ||
3007 | static bool hotkey_notify_usrevent(const u32 hkey, | |
3008 | bool *send_acpi_ev, | |
3009 | bool *ignore_acpi_ev) | |
3010 | { | |
3011 | /* 0x5000-0x5FFF: human interface helpers */ | |
3012 | *send_acpi_ev = true; | |
3013 | *ignore_acpi_ev = false; | |
3014 | ||
3015 | switch (hkey) { | |
3016 | case 0x5010: /* Lenovo new BIOS: brightness changed */ | |
3017 | case 0x500b: /* X61t: tablet pen inserted into bay */ | |
3018 | case 0x500c: /* X61t: tablet pen removed from bay */ | |
3019 | return true; | |
3020 | ||
3021 | case 0x5009: /* X41t-X61t: swivel up (tablet mode) */ | |
3022 | case 0x500a: /* X41t-X61t: swivel down (normal mode) */ | |
3023 | tpacpi_input_send_tabletsw(); | |
3024 | hotkey_tablet_mode_notify_change(); | |
3025 | *send_acpi_ev = false; | |
3026 | return true; | |
3027 | ||
3028 | case 0x5001: | |
3029 | case 0x5002: | |
3030 | /* LID switch events. Do not propagate */ | |
3031 | *ignore_acpi_ev = true; | |
3032 | return true; | |
3033 | ||
3034 | default: | |
3035 | return false; | |
3036 | } | |
3037 | } | |
3038 | ||
106b4e66 HMH |
3039 | static bool hotkey_notify_thermal(const u32 hkey, |
3040 | bool *send_acpi_ev, | |
3041 | bool *ignore_acpi_ev) | |
3042 | { | |
3043 | /* 0x6000-0x6FFF: thermal alarms */ | |
3044 | *send_acpi_ev = true; | |
3045 | *ignore_acpi_ev = false; | |
3046 | ||
3047 | switch (hkey) { | |
3048 | case 0x6011: | |
3049 | printk(TPACPI_CRIT | |
3050 | "THERMAL ALARM: battery is too hot!\n"); | |
3051 | /* recommended action: warn user through gui */ | |
3052 | return true; | |
3053 | case 0x6012: | |
3054 | printk(TPACPI_ALERT | |
3055 | "THERMAL EMERGENCY: battery is extremely hot!\n"); | |
3056 | /* recommended action: immediate sleep/hibernate */ | |
3057 | return true; | |
3058 | case 0x6021: | |
3059 | printk(TPACPI_CRIT | |
3060 | "THERMAL ALARM: " | |
3061 | "a sensor reports something is too hot!\n"); | |
3062 | /* recommended action: warn user through gui, that */ | |
3063 | /* some internal component is too hot */ | |
3064 | return true; | |
3065 | case 0x6022: | |
3066 | printk(TPACPI_ALERT | |
3067 | "THERMAL EMERGENCY: " | |
3068 | "a sensor reports something is extremely hot!\n"); | |
3069 | /* recommended action: immediate sleep/hibernate */ | |
3070 | return true; | |
54926ce8 HMH |
3071 | case 0x6030: |
3072 | printk(TPACPI_INFO | |
3073 | "EC reports that Thermal Table has changed\n"); | |
3074 | /* recommended action: do nothing, we don't have | |
3075 | * Lenovo ATM information */ | |
3076 | return true; | |
106b4e66 HMH |
3077 | default: |
3078 | printk(TPACPI_ALERT | |
3079 | "THERMAL ALERT: unknown thermal alarm received\n"); | |
3080 | return false; | |
3081 | } | |
3082 | } | |
3083 | ||
56b6aeb0 HMH |
3084 | static void hotkey_notify(struct ibm_struct *ibm, u32 event) |
3085 | { | |
6a38abbf | 3086 | u32 hkey; |
3827e7a3 HMH |
3087 | bool send_acpi_ev; |
3088 | bool ignore_acpi_ev; | |
3089 | bool known_ev; | |
3eea123d HMH |
3090 | |
3091 | if (event != 0x80) { | |
35ff8b9f HMH |
3092 | printk(TPACPI_ERR |
3093 | "unknown HKEY notification event %d\n", event); | |
3eea123d | 3094 | /* forward it to userspace, maybe it knows how to handle it */ |
35ff8b9f HMH |
3095 | acpi_bus_generate_netlink_event( |
3096 | ibm->acpi->device->pnp.device_class, | |
e0b36fc5 | 3097 | dev_name(&ibm->acpi->device->dev), |
35ff8b9f | 3098 | event, 0); |
3eea123d HMH |
3099 | return; |
3100 | } | |
3101 | ||
3102 | while (1) { | |
3103 | if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { | |
e0c7dfe7 | 3104 | printk(TPACPI_ERR "failed to retrieve HKEY event\n"); |
3eea123d HMH |
3105 | return; |
3106 | } | |
3107 | ||
3108 | if (hkey == 0) { | |
3109 | /* queue empty */ | |
3110 | return; | |
3111 | } | |
3112 | ||
3827e7a3 HMH |
3113 | send_acpi_ev = true; |
3114 | ignore_acpi_ev = false; | |
56b6aeb0 | 3115 | |
ff80f137 HMH |
3116 | switch (hkey >> 12) { |
3117 | case 1: | |
3118 | /* 0x1000-0x1FFF: key presses */ | |
3827e7a3 HMH |
3119 | known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev, |
3120 | &ignore_acpi_ev); | |
ff80f137 | 3121 | break; |
a713b4d7 | 3122 | case 2: |
3827e7a3 HMH |
3123 | /* 0x2000-0x2FFF: Wakeup reason */ |
3124 | known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev, | |
3125 | &ignore_acpi_ev); | |
a713b4d7 HMH |
3126 | break; |
3127 | case 3: | |
3827e7a3 | 3128 | /* 0x3000-0x3FFF: bay-related wakeups */ |
a713b4d7 HMH |
3129 | if (hkey == 0x3003) { |
3130 | hotkey_autosleep_ack = 1; | |
3131 | printk(TPACPI_INFO | |
3132 | "bay ejected\n"); | |
50ebec09 | 3133 | hotkey_wakeup_hotunplug_complete_notify_change(); |
3827e7a3 | 3134 | known_ev = true; |
a713b4d7 | 3135 | } else { |
3827e7a3 | 3136 | known_ev = false; |
a713b4d7 HMH |
3137 | } |
3138 | break; | |
3139 | case 4: | |
3827e7a3 | 3140 | /* 0x4000-0x4FFF: dock-related wakeups */ |
a713b4d7 HMH |
3141 | if (hkey == 0x4003) { |
3142 | hotkey_autosleep_ack = 1; | |
3143 | printk(TPACPI_INFO | |
3144 | "undocked\n"); | |
50ebec09 | 3145 | hotkey_wakeup_hotunplug_complete_notify_change(); |
3827e7a3 | 3146 | known_ev = true; |
a713b4d7 | 3147 | } else { |
3827e7a3 | 3148 | known_ev = false; |
a713b4d7 HMH |
3149 | } |
3150 | break; | |
ff80f137 | 3151 | case 5: |
d1edb2b5 | 3152 | /* 0x5000-0x5FFF: human interface helpers */ |
3827e7a3 HMH |
3153 | known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev, |
3154 | &ignore_acpi_ev); | |
ff80f137 | 3155 | break; |
106b4e66 HMH |
3156 | case 6: |
3157 | /* 0x6000-0x6FFF: thermal alarms */ | |
3158 | known_ev = hotkey_notify_thermal(hkey, &send_acpi_ev, | |
3159 | &ignore_acpi_ev); | |
3160 | break; | |
ff80f137 HMH |
3161 | case 7: |
3162 | /* 0x7000-0x7FFF: misc */ | |
3163 | if (tp_features.hotkey_wlsw && hkey == 0x7000) { | |
733e27c1 | 3164 | tpacpi_send_radiosw_update(); |
3b64b51d | 3165 | send_acpi_ev = 0; |
3827e7a3 | 3166 | known_ev = true; |
6a38abbf | 3167 | break; |
6a38abbf | 3168 | } |
ff80f137 HMH |
3169 | /* fallthrough to default */ |
3170 | default: | |
3827e7a3 | 3171 | known_ev = false; |
3b64b51d | 3172 | } |
3827e7a3 | 3173 | if (!known_ev) { |
35ff8b9f HMH |
3174 | printk(TPACPI_NOTICE |
3175 | "unhandled HKEY event 0x%04x\n", hkey); | |
cb429358 HMH |
3176 | printk(TPACPI_NOTICE |
3177 | "please report the conditions when this " | |
3178 | "event happened to %s\n", TPACPI_MAIL); | |
6a38abbf | 3179 | } |
ff80f137 | 3180 | |
3eea123d | 3181 | /* Legacy events */ |
35ff8b9f HMH |
3182 | if (!ignore_acpi_ev && |
3183 | (send_acpi_ev || hotkey_report_mode < 2)) { | |
3184 | acpi_bus_generate_proc_event(ibm->acpi->device, | |
3185 | event, hkey); | |
3e5ce914 | 3186 | } |
ff80f137 | 3187 | |
3eea123d | 3188 | /* netlink events */ |
3e5ce914 | 3189 | if (!ignore_acpi_ev && send_acpi_ev) { |
35ff8b9f HMH |
3190 | acpi_bus_generate_netlink_event( |
3191 | ibm->acpi->device->pnp.device_class, | |
e0b36fc5 | 3192 | dev_name(&ibm->acpi->device->dev), |
35ff8b9f | 3193 | event, hkey); |
3eea123d | 3194 | } |
56b6aeb0 HMH |
3195 | } |
3196 | } | |
3197 | ||
a713b4d7 HMH |
3198 | static void hotkey_suspend(pm_message_t state) |
3199 | { | |
3200 | /* Do these on suspend, we get the events on early resume! */ | |
3201 | hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; | |
3202 | hotkey_autosleep_ack = 0; | |
3203 | } | |
3204 | ||
5c29d58f HMH |
3205 | static void hotkey_resume(void) |
3206 | { | |
d64c81c4 HMH |
3207 | tpacpi_disable_brightness_delay(); |
3208 | ||
b2c985e7 | 3209 | if (hotkey_mask_get()) |
35ff8b9f HMH |
3210 | printk(TPACPI_ERR |
3211 | "error while trying to read hot key mask " | |
3212 | "from firmware\n"); | |
733e27c1 | 3213 | tpacpi_send_radiosw_update(); |
6c231bd5 | 3214 | hotkey_tablet_mode_notify_change(); |
50ebec09 HMH |
3215 | hotkey_wakeup_reason_notify_change(); |
3216 | hotkey_wakeup_hotunplug_complete_notify_change(); | |
01e88f25 | 3217 | hotkey_poll_setup_safe(0); |
5c29d58f HMH |
3218 | } |
3219 | ||
a0416420 | 3220 | /* procfs -------------------------------------------------------------- */ |
78f81cc4 | 3221 | static int hotkey_read(char *p) |
1da177e4 | 3222 | { |
ae92bd17 | 3223 | int res, status; |
1da177e4 LT |
3224 | int len = 0; |
3225 | ||
d8fd94d9 | 3226 | if (!tp_features.hotkey) { |
78f81cc4 BD |
3227 | len += sprintf(p + len, "status:\t\tnot supported\n"); |
3228 | return len; | |
3229 | } | |
3230 | ||
7646ea88 | 3231 | if (mutex_lock_killable(&hotkey_mutex)) |
fc589a3c | 3232 | return -ERESTARTSYS; |
b2c985e7 HMH |
3233 | res = hotkey_status_get(&status); |
3234 | if (!res) | |
3235 | res = hotkey_mask_get(); | |
40ca9fdf | 3236 | mutex_unlock(&hotkey_mutex); |
b86c4722 HMH |
3237 | if (res) |
3238 | return res; | |
1da177e4 LT |
3239 | |
3240 | len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0)); | |
d8fd94d9 | 3241 | if (tp_features.hotkey_mask) { |
b2c985e7 | 3242 | len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_mask); |
1da177e4 LT |
3243 | len += sprintf(p + len, |
3244 | "commands:\tenable, disable, reset, <mask>\n"); | |
3245 | } else { | |
3246 | len += sprintf(p + len, "mask:\t\tnot supported\n"); | |
3247 | len += sprintf(p + len, "commands:\tenable, disable, reset\n"); | |
3248 | } | |
3249 | ||
3250 | return len; | |
3251 | } | |
3252 | ||
406e988b | 3253 | static void hotkey_enabledisable_warn(bool enable) |
2586d566 HMH |
3254 | { |
3255 | tpacpi_log_usertask("procfs hotkey enable/disable"); | |
406e988b HMH |
3256 | if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable), |
3257 | TPACPI_WARN | |
3258 | "hotkey enable/disable functionality has been " | |
3259 | "removed from the driver. Hotkeys are always " | |
3260 | "enabled\n")) | |
3261 | printk(TPACPI_ERR | |
3262 | "Please remove the hotkey=enable module " | |
3263 | "parameter, it is deprecated. Hotkeys are always " | |
3264 | "enabled\n"); | |
2586d566 HMH |
3265 | } |
3266 | ||
78f81cc4 | 3267 | static int hotkey_write(char *buf) |
1da177e4 | 3268 | { |
2586d566 | 3269 | int res; |
ae92bd17 | 3270 | u32 mask; |
1da177e4 | 3271 | char *cmd; |
1da177e4 | 3272 | |
d8fd94d9 | 3273 | if (!tp_features.hotkey) |
1da177e4 LT |
3274 | return -ENODEV; |
3275 | ||
7646ea88 | 3276 | if (mutex_lock_killable(&hotkey_mutex)) |
fc589a3c | 3277 | return -ERESTARTSYS; |
40ca9fdf | 3278 | |
b2c985e7 | 3279 | mask = hotkey_mask; |
78f81cc4 | 3280 | |
40ca9fdf | 3281 | res = 0; |
1da177e4 LT |
3282 | while ((cmd = next_cmd(&buf))) { |
3283 | if (strlencmp(cmd, "enable") == 0) { | |
406e988b | 3284 | hotkey_enabledisable_warn(1); |
1da177e4 | 3285 | } else if (strlencmp(cmd, "disable") == 0) { |
406e988b | 3286 | hotkey_enabledisable_warn(0); |
2586d566 | 3287 | res = -EPERM; |
1da177e4 | 3288 | } else if (strlencmp(cmd, "reset") == 0) { |
78f81cc4 | 3289 | mask = hotkey_orig_mask; |
1da177e4 LT |
3290 | } else if (sscanf(cmd, "0x%x", &mask) == 1) { |
3291 | /* mask set */ | |
3292 | } else if (sscanf(cmd, "%x", &mask) == 1) { | |
3293 | /* mask set */ | |
40ca9fdf HMH |
3294 | } else { |
3295 | res = -EINVAL; | |
3296 | goto errexit; | |
3297 | } | |
1da177e4 | 3298 | } |
56e2c200 HMH |
3299 | |
3300 | if (!res) | |
3301 | tpacpi_disclose_usertask("procfs hotkey", | |
3302 | "set mask to 0x%08x\n", mask); | |
3303 | ||
b2c985e7 HMH |
3304 | if (!res && mask != hotkey_mask) |
3305 | res = hotkey_mask_set(mask); | |
1da177e4 | 3306 | |
40ca9fdf HMH |
3307 | errexit: |
3308 | mutex_unlock(&hotkey_mutex); | |
3309 | return res; | |
78f81cc4 | 3310 | } |
1da177e4 | 3311 | |
1ba90e3a | 3312 | static const struct acpi_device_id ibm_htk_device_ids[] = { |
e0c7dfe7 | 3313 | {TPACPI_ACPI_HKEY_HID, 0}, |
1ba90e3a TR |
3314 | {"", 0}, |
3315 | }; | |
3316 | ||
8d376cd6 | 3317 | static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { |
1ba90e3a | 3318 | .hid = ibm_htk_device_ids, |
8d376cd6 HMH |
3319 | .notify = hotkey_notify, |
3320 | .handle = &hkey_handle, | |
3321 | .type = ACPI_DEVICE_NOTIFY, | |
3322 | }; | |
3323 | ||
a5763f22 HMH |
3324 | static struct ibm_struct hotkey_driver_data = { |
3325 | .name = "hotkey", | |
a5763f22 HMH |
3326 | .read = hotkey_read, |
3327 | .write = hotkey_write, | |
3328 | .exit = hotkey_exit, | |
5c29d58f | 3329 | .resume = hotkey_resume, |
a713b4d7 | 3330 | .suspend = hotkey_suspend, |
8d376cd6 | 3331 | .acpi = &ibm_hotkey_acpidriver, |
a5763f22 HMH |
3332 | }; |
3333 | ||
56b6aeb0 HMH |
3334 | /************************************************************************* |
3335 | * Bluetooth subdriver | |
3336 | */ | |
1da177e4 | 3337 | |
f74a27d4 HMH |
3338 | enum { |
3339 | /* ACPI GBDC/SBDC bits */ | |
3340 | TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ | |
3341 | TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ | |
153f8220 HMH |
3342 | TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume: |
3343 | off / last state */ | |
3344 | }; | |
3345 | ||
3346 | enum { | |
3347 | /* ACPI \BLTH commands */ | |
3348 | TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */ | |
3349 | TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */ | |
3350 | TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */ | |
3351 | TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */ | |
3352 | TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */ | |
f74a27d4 HMH |
3353 | }; |
3354 | ||
bee4cd9b HMH |
3355 | #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw" |
3356 | ||
153f8220 HMH |
3357 | static void bluetooth_suspend(pm_message_t state) |
3358 | { | |
3359 | /* Try to make sure radio will resume powered off */ | |
bee4cd9b HMH |
3360 | if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd", |
3361 | TP_ACPI_BLTH_PWR_OFF_ON_RESUME)) | |
3362 | vdbg_printk(TPACPI_DBG_RFKILL, | |
3363 | "bluetooth power down on resume request failed\n"); | |
153f8220 HMH |
3364 | } |
3365 | ||
19d337df | 3366 | static int bluetooth_get_status(void) |
07431ec8 HMH |
3367 | { |
3368 | int status; | |
3369 | ||
a73f3091 HMH |
3370 | #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
3371 | if (dbg_bluetoothemul) | |
3372 | return (tpacpi_bluetooth_emulstate) ? | |
19d337df | 3373 | TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; |
a73f3091 HMH |
3374 | #endif |
3375 | ||
07431ec8 HMH |
3376 | if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) |
3377 | return -EIO; | |
3378 | ||
0e74dc26 | 3379 | return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ? |
19d337df | 3380 | TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; |
07431ec8 HMH |
3381 | } |
3382 | ||
19d337df | 3383 | static int bluetooth_set_status(enum tpacpi_rfkill_state state) |
0e74dc26 HMH |
3384 | { |
3385 | int status; | |
3386 | ||
bee4cd9b | 3387 | vdbg_printk(TPACPI_DBG_RFKILL, |
19d337df JB |
3388 | "will attempt to %s bluetooth\n", |
3389 | (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); | |
bee4cd9b | 3390 | |
a73f3091 HMH |
3391 | #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
3392 | if (dbg_bluetoothemul) { | |
19d337df | 3393 | tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON); |
a73f3091 HMH |
3394 | return 0; |
3395 | } | |
3396 | #endif | |
3397 | ||
153f8220 | 3398 | /* We make sure to keep TP_ACPI_BLUETOOTH_RESUMECTRL off */ |
19d337df | 3399 | if (state == TPACPI_RFK_RADIO_ON) |
153f8220 | 3400 | status = TP_ACPI_BLUETOOTH_RADIOSSW; |
07431ec8 | 3401 | else |
153f8220 | 3402 | status = 0; |
19d337df | 3403 | |
07431ec8 HMH |
3404 | if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) |
3405 | return -EIO; | |
3406 | ||
3407 | return 0; | |
3408 | } | |
f74a27d4 | 3409 | |
d3a6ade4 HMH |
3410 | /* sysfs bluetooth enable ---------------------------------------------- */ |
3411 | static ssize_t bluetooth_enable_show(struct device *dev, | |
3412 | struct device_attribute *attr, | |
3413 | char *buf) | |
3414 | { | |
19d337df JB |
3415 | return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID, |
3416 | attr, buf); | |
d3a6ade4 HMH |
3417 | } |
3418 | ||
3419 | static ssize_t bluetooth_enable_store(struct device *dev, | |
3420 | struct device_attribute *attr, | |
3421 | const char *buf, size_t count) | |
3422 | { | |
19d337df JB |
3423 | return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID, |
3424 | attr, buf, count); | |
d3a6ade4 HMH |
3425 | } |
3426 | ||
3427 | static struct device_attribute dev_attr_bluetooth_enable = | |
cc4c24e1 | 3428 | __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO, |
d3a6ade4 HMH |
3429 | bluetooth_enable_show, bluetooth_enable_store); |
3430 | ||
3431 | /* --------------------------------------------------------------------- */ | |
3432 | ||
3433 | static struct attribute *bluetooth_attributes[] = { | |
3434 | &dev_attr_bluetooth_enable.attr, | |
3435 | NULL | |
3436 | }; | |
3437 | ||
3438 | static const struct attribute_group bluetooth_attr_group = { | |
d3a6ade4 HMH |
3439 | .attrs = bluetooth_attributes, |
3440 | }; | |
3441 | ||
19d337df JB |
3442 | static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = { |
3443 | .get_status = bluetooth_get_status, | |
3444 | .set_status = bluetooth_set_status, | |
3445 | }; | |
0e74dc26 | 3446 | |
90d9d3c7 HMH |
3447 | static void bluetooth_shutdown(void) |
3448 | { | |
3449 | /* Order firmware to save current state to NVRAM */ | |
3450 | if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd", | |
3451 | TP_ACPI_BLTH_SAVE_STATE)) | |
3452 | printk(TPACPI_NOTICE | |
3453 | "failed to save bluetooth state to NVRAM\n"); | |
bee4cd9b HMH |
3454 | else |
3455 | vdbg_printk(TPACPI_DBG_RFKILL, | |
3456 | "bluestooth state saved to NVRAM\n"); | |
90d9d3c7 HMH |
3457 | } |
3458 | ||
07431ec8 HMH |
3459 | static void bluetooth_exit(void) |
3460 | { | |
3461 | sysfs_remove_group(&tpacpi_pdev->dev.kobj, | |
3462 | &bluetooth_attr_group); | |
19d337df JB |
3463 | |
3464 | tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); | |
3465 | ||
3466 | bluetooth_shutdown(); | |
07431ec8 HMH |
3467 | } |
3468 | ||
a5763f22 | 3469 | static int __init bluetooth_init(struct ibm_init_struct *iibm) |
1da177e4 | 3470 | { |
d3a6ade4 | 3471 | int res; |
d6fdd1e9 HMH |
3472 | int status = 0; |
3473 | ||
bee4cd9b HMH |
3474 | vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, |
3475 | "initializing bluetooth subdriver\n"); | |
fe08bc4b | 3476 | |
e0c7dfe7 | 3477 | TPACPI_ACPIHANDLE_INIT(hkey); |
5fba344c | 3478 | |
78f81cc4 BD |
3479 | /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, |
3480 | G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ | |
d8fd94d9 | 3481 | tp_features.bluetooth = hkey_handle && |
d6fdd1e9 HMH |
3482 | acpi_evalf(hkey_handle, &status, "GBDC", "qd"); |
3483 | ||
bee4cd9b HMH |
3484 | vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, |
3485 | "bluetooth is %s, status 0x%02x\n", | |
d6fdd1e9 HMH |
3486 | str_supported(tp_features.bluetooth), |
3487 | status); | |
3488 | ||
a73f3091 HMH |
3489 | #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
3490 | if (dbg_bluetoothemul) { | |
3491 | tp_features.bluetooth = 1; | |
3492 | printk(TPACPI_INFO | |
3493 | "bluetooth switch emulation enabled\n"); | |
3494 | } else | |
3495 | #endif | |
3a872080 HMH |
3496 | if (tp_features.bluetooth && |
3497 | !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { | |
3498 | /* no bluetooth hardware present in system */ | |
3499 | tp_features.bluetooth = 0; | |
bee4cd9b | 3500 | dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, |
3a872080 HMH |
3501 | "bluetooth hardware not installed\n"); |
3502 | } | |
3503 | ||
0e74dc26 HMH |
3504 | if (!tp_features.bluetooth) |
3505 | return 1; | |
3506 | ||
0e74dc26 | 3507 | res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID, |
19d337df | 3508 | &bluetooth_tprfk_ops, |
0e74dc26 | 3509 | RFKILL_TYPE_BLUETOOTH, |
bee4cd9b | 3510 | TPACPI_RFK_BLUETOOTH_SW_NAME, |
19d337df JB |
3511 | true); |
3512 | if (res) | |
3513 | return res; | |
3514 | ||
3515 | res = sysfs_create_group(&tpacpi_pdev->dev.kobj, | |
3516 | &bluetooth_attr_group); | |
0e74dc26 | 3517 | if (res) { |
19d337df | 3518 | tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); |
0e74dc26 | 3519 | return res; |
d6fdd1e9 | 3520 | } |
fe08bc4b | 3521 | |
0e74dc26 | 3522 | return 0; |
1da177e4 LT |
3523 | } |
3524 | ||
d3a6ade4 | 3525 | /* procfs -------------------------------------------------------------- */ |
78f81cc4 | 3526 | static int bluetooth_read(char *p) |
1da177e4 | 3527 | { |
19d337df | 3528 | return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, p); |
1da177e4 LT |
3529 | } |
3530 | ||
78f81cc4 | 3531 | static int bluetooth_write(char *buf) |
1da177e4 | 3532 | { |
19d337df | 3533 | return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf); |
1da177e4 LT |
3534 | } |
3535 | ||
a5763f22 HMH |
3536 | static struct ibm_struct bluetooth_driver_data = { |
3537 | .name = "bluetooth", | |
3538 | .read = bluetooth_read, | |
3539 | .write = bluetooth_write, | |
d3a6ade4 | 3540 | .exit = bluetooth_exit, |
153f8220 | 3541 | .suspend = bluetooth_suspend, |
90d9d3c7 | 3542 | .shutdown = bluetooth_shutdown, |
a5763f22 HMH |
3543 | }; |
3544 | ||
56b6aeb0 HMH |
3545 | /************************************************************************* |
3546 | * Wan subdriver | |
3547 | */ | |
3548 | ||
f74a27d4 HMH |
3549 | enum { |
3550 | /* ACPI GWAN/SWAN bits */ | |
3551 | TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ | |
3552 | TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ | |
153f8220 HMH |
3553 | TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume: |
3554 | off / last state */ | |
f74a27d4 HMH |
3555 | }; |
3556 | ||
bee4cd9b HMH |
3557 | #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw" |
3558 | ||
153f8220 HMH |
3559 | static void wan_suspend(pm_message_t state) |
3560 | { | |
3561 | /* Try to make sure radio will resume powered off */ | |
bee4cd9b HMH |
3562 | if (!acpi_evalf(NULL, NULL, "\\WGSV", "qvd", |
3563 | TP_ACPI_WGSV_PWR_OFF_ON_RESUME)) | |
3564 | vdbg_printk(TPACPI_DBG_RFKILL, | |
3565 | "WWAN power down on resume request failed\n"); | |
153f8220 HMH |
3566 | } |
3567 | ||
19d337df | 3568 | static int wan_get_status(void) |
07431ec8 HMH |
3569 | { |
3570 | int status; | |
3571 | ||
a73f3091 HMH |
3572 | #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
3573 | if (dbg_wwanemul) | |
3574 | return (tpacpi_wwan_emulstate) ? | |
19d337df | 3575 | TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; |
a73f3091 HMH |
3576 | #endif |
3577 | ||
07431ec8 HMH |
3578 | if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) |
3579 | return -EIO; | |
3580 | ||
0e74dc26 | 3581 | return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ? |
19d337df | 3582 | TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; |
0e74dc26 HMH |
3583 | } |
3584 | ||
19d337df | 3585 | static int wan_set_status(enum tpacpi_rfkill_state state) |
07431ec8 HMH |
3586 | { |
3587 | int status; | |
3588 | ||
bee4cd9b | 3589 | vdbg_printk(TPACPI_DBG_RFKILL, |
19d337df JB |
3590 | "will attempt to %s wwan\n", |
3591 | (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); | |
bee4cd9b | 3592 | |
a73f3091 HMH |
3593 | #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
3594 | if (dbg_wwanemul) { | |
19d337df | 3595 | tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON); |
a73f3091 HMH |
3596 | return 0; |
3597 | } | |
3598 | #endif | |
3599 | ||
153f8220 | 3600 | /* We make sure to keep TP_ACPI_WANCARD_RESUMECTRL off */ |
19d337df | 3601 | if (state == TPACPI_RFK_RADIO_ON) |
153f8220 | 3602 | status = TP_ACPI_WANCARD_RADIOSSW; |
07431ec8 | 3603 | else |
153f8220 | 3604 | status = 0; |
19d337df | 3605 | |
07431ec8 HMH |
3606 | if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) |
3607 | return -EIO; | |
3608 | ||
3609 | return 0; | |
3610 | } | |
f74a27d4 | 3611 | |
d3a6ade4 HMH |
3612 | /* sysfs wan enable ---------------------------------------------------- */ |
3613 | static ssize_t wan_enable_show(struct device *dev, | |
3614 | struct device_attribute *attr, | |
3615 | char *buf) | |
3616 | { | |
19d337df JB |
3617 | return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID, |
3618 | attr, buf); | |
d3a6ade4 HMH |
3619 | } |
3620 | ||
3621 | static ssize_t wan_enable_store(struct device *dev, | |
3622 | struct device_attribute *attr, | |
3623 | const char *buf, size_t count) | |
3624 | { | |
19d337df JB |
3625 | return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID, |
3626 | attr, buf, count); | |
d3a6ade4 HMH |
3627 | } |
3628 | ||
3629 | static struct device_attribute dev_attr_wan_enable = | |
cc4c24e1 | 3630 | __ATTR(wwan_enable, S_IWUSR | S_IRUGO, |
d3a6ade4 HMH |
3631 | wan_enable_show, wan_enable_store); |
3632 | ||
3633 | /* --------------------------------------------------------------------- */ | |
3634 | ||
3635 | static struct attribute *wan_attributes[] = { | |
3636 | &dev_attr_wan_enable.attr, | |
3637 | NULL | |
3638 | }; | |
3639 | ||
3640 | static const struct attribute_group wan_attr_group = { | |
d3a6ade4 HMH |
3641 | .attrs = wan_attributes, |
3642 | }; | |
3643 | ||
19d337df JB |
3644 | static const struct tpacpi_rfk_ops wan_tprfk_ops = { |
3645 | .get_status = wan_get_status, | |
3646 | .set_status = wan_set_status, | |
3647 | }; | |
0e74dc26 | 3648 | |
90d9d3c7 HMH |
3649 | static void wan_shutdown(void) |
3650 | { | |
3651 | /* Order firmware to save current state to NVRAM */ | |
3652 | if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd", | |
3653 | TP_ACPI_WGSV_SAVE_STATE)) | |
3654 | printk(TPACPI_NOTICE | |
3655 | "failed to save WWAN state to NVRAM\n"); | |
bee4cd9b HMH |
3656 | else |
3657 | vdbg_printk(TPACPI_DBG_RFKILL, | |
3658 | "WWAN state saved to NVRAM\n"); | |
90d9d3c7 HMH |
3659 | } |
3660 | ||
07431ec8 HMH |
3661 | static void wan_exit(void) |
3662 | { | |
3663 | sysfs_remove_group(&tpacpi_pdev->dev.kobj, | |
3664 | &wan_attr_group); | |
19d337df JB |
3665 | |
3666 | tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); | |
3667 | ||
3668 | wan_shutdown(); | |
07431ec8 HMH |
3669 | } |
3670 | ||
a5763f22 | 3671 | static int __init wan_init(struct ibm_init_struct *iibm) |
42adb53c | 3672 | { |
d3a6ade4 | 3673 | int res; |
d6fdd1e9 HMH |
3674 | int status = 0; |
3675 | ||
bee4cd9b HMH |
3676 | vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, |
3677 | "initializing wan subdriver\n"); | |
fe08bc4b | 3678 | |
e0c7dfe7 | 3679 | TPACPI_ACPIHANDLE_INIT(hkey); |
5fba344c | 3680 | |
d8fd94d9 | 3681 | tp_features.wan = hkey_handle && |
d6fdd1e9 HMH |
3682 | acpi_evalf(hkey_handle, &status, "GWAN", "qd"); |
3683 | ||
bee4cd9b HMH |
3684 | vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, |
3685 | "wan is %s, status 0x%02x\n", | |
d6fdd1e9 HMH |
3686 | str_supported(tp_features.wan), |
3687 | status); | |
3688 | ||
a73f3091 HMH |
3689 | #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
3690 | if (dbg_wwanemul) { | |
3691 | tp_features.wan = 1; | |
3692 | printk(TPACPI_INFO | |
3693 | "wwan switch emulation enabled\n"); | |
3694 | } else | |
3695 | #endif | |
3a872080 HMH |
3696 | if (tp_features.wan && |
3697 | !(status & TP_ACPI_WANCARD_HWPRESENT)) { | |
3698 | /* no wan hardware present in system */ | |
3699 | tp_features.wan = 0; | |
bee4cd9b | 3700 | dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, |
3a872080 HMH |
3701 | "wan hardware not installed\n"); |
3702 | } | |
3703 | ||
0e74dc26 HMH |
3704 | if (!tp_features.wan) |
3705 | return 1; | |
3706 | ||
0e74dc26 | 3707 | res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID, |
19d337df | 3708 | &wan_tprfk_ops, |
0e74dc26 | 3709 | RFKILL_TYPE_WWAN, |
bee4cd9b | 3710 | TPACPI_RFK_WWAN_SW_NAME, |
19d337df JB |
3711 | true); |
3712 | if (res) | |
3713 | return res; | |
3714 | ||
3715 | res = sysfs_create_group(&tpacpi_pdev->dev.kobj, | |
3716 | &wan_attr_group); | |
3717 | ||
0e74dc26 | 3718 | if (res) { |
19d337df | 3719 | tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); |
0e74dc26 | 3720 | return res; |
d6fdd1e9 | 3721 | } |
fe08bc4b | 3722 | |
0e74dc26 | 3723 | return 0; |
42adb53c JF |
3724 | } |
3725 | ||
d3a6ade4 | 3726 | /* procfs -------------------------------------------------------------- */ |
42adb53c JF |
3727 | static int wan_read(char *p) |
3728 | { | |
19d337df | 3729 | return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, p); |
42adb53c JF |
3730 | } |
3731 | ||
3732 | static int wan_write(char *buf) | |
3733 | { | |
19d337df | 3734 | return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf); |
42adb53c JF |
3735 | } |
3736 | ||
a5763f22 HMH |
3737 | static struct ibm_struct wan_driver_data = { |
3738 | .name = "wan", | |
3739 | .read = wan_read, | |
3740 | .write = wan_write, | |
d3a6ade4 | 3741 | .exit = wan_exit, |
153f8220 | 3742 | .suspend = wan_suspend, |
90d9d3c7 | 3743 | .shutdown = wan_shutdown, |
a5763f22 HMH |
3744 | }; |
3745 | ||
0045c0aa HMH |
3746 | /************************************************************************* |
3747 | * UWB subdriver | |
3748 | */ | |
3749 | ||
3750 | enum { | |
3751 | /* ACPI GUWB/SUWB bits */ | |
3752 | TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */ | |
3753 | TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */ | |
3754 | }; | |
3755 | ||
bee4cd9b HMH |
3756 | #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw" |
3757 | ||
19d337df | 3758 | static int uwb_get_status(void) |
0045c0aa HMH |
3759 | { |
3760 | int status; | |
3761 | ||
0045c0aa HMH |
3762 | #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
3763 | if (dbg_uwbemul) | |
3764 | return (tpacpi_uwb_emulstate) ? | |
19d337df | 3765 | TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; |
0045c0aa HMH |
3766 | #endif |
3767 | ||
3768 | if (!acpi_evalf(hkey_handle, &status, "GUWB", "d")) | |
3769 | return -EIO; | |
3770 | ||
3771 | return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ? | |
19d337df | 3772 | TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; |
0045c0aa HMH |
3773 | } |
3774 | ||
19d337df | 3775 | static int uwb_set_status(enum tpacpi_rfkill_state state) |
0045c0aa HMH |
3776 | { |
3777 | int status; | |
3778 | ||
bee4cd9b | 3779 | vdbg_printk(TPACPI_DBG_RFKILL, |
19d337df JB |
3780 | "will attempt to %s UWB\n", |
3781 | (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); | |
bee4cd9b | 3782 | |
0045c0aa HMH |
3783 | #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
3784 | if (dbg_uwbemul) { | |
19d337df | 3785 | tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON); |
0045c0aa HMH |
3786 | return 0; |
3787 | } | |
3788 | #endif | |
3789 | ||
19d337df JB |
3790 | if (state == TPACPI_RFK_RADIO_ON) |
3791 | status = TP_ACPI_UWB_RADIOSSW; | |
3792 | else | |
3793 | status = 0; | |
3794 | ||
0045c0aa HMH |
3795 | if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status)) |
3796 | return -EIO; | |
3797 | ||
0045c0aa HMH |
3798 | return 0; |
3799 | } | |
3800 | ||
3801 | /* --------------------------------------------------------------------- */ | |
3802 | ||
19d337df JB |
3803 | static const struct tpacpi_rfk_ops uwb_tprfk_ops = { |
3804 | .get_status = uwb_get_status, | |
3805 | .set_status = uwb_set_status, | |
3806 | }; | |
0045c0aa HMH |
3807 | |
3808 | static void uwb_exit(void) | |
3809 | { | |
19d337df | 3810 | tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID); |
0045c0aa HMH |
3811 | } |
3812 | ||
3813 | static int __init uwb_init(struct ibm_init_struct *iibm) | |
3814 | { | |
3815 | int res; | |
3816 | int status = 0; | |
3817 | ||
bee4cd9b HMH |
3818 | vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, |
3819 | "initializing uwb subdriver\n"); | |
0045c0aa HMH |
3820 | |
3821 | TPACPI_ACPIHANDLE_INIT(hkey); | |
3822 | ||
3823 | tp_features.uwb = hkey_handle && | |
3824 | acpi_evalf(hkey_handle, &status, "GUWB", "qd"); | |
3825 | ||
bee4cd9b HMH |
3826 | vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, |
3827 | "uwb is %s, status 0x%02x\n", | |
0045c0aa HMH |
3828 | str_supported(tp_features.uwb), |
3829 | status); | |
3830 | ||
3831 | #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES | |
3832 | if (dbg_uwbemul) { | |
3833 | tp_features.uwb = 1; | |
3834 | printk(TPACPI_INFO | |
3835 | "uwb switch emulation enabled\n"); | |
3836 | } else | |
3837 | #endif | |
3838 | if (tp_features.uwb && | |
3839 | !(status & TP_ACPI_UWB_HWPRESENT)) { | |
3840 | /* no uwb hardware present in system */ | |
3841 | tp_features.uwb = 0; | |
3842 | dbg_printk(TPACPI_DBG_INIT, | |
3843 | "uwb hardware not installed\n"); | |
3844 | } | |
3845 | ||
3846 | if (!tp_features.uwb) | |
3847 | return 1; | |
3848 | ||
3849 | res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID, | |
19d337df | 3850 | &uwb_tprfk_ops, |
0045c0aa | 3851 | RFKILL_TYPE_UWB, |
bee4cd9b | 3852 | TPACPI_RFK_UWB_SW_NAME, |
19d337df | 3853 | false); |
0045c0aa HMH |
3854 | return res; |
3855 | } | |
3856 | ||
3857 | static struct ibm_struct uwb_driver_data = { | |
3858 | .name = "uwb", | |
3859 | .exit = uwb_exit, | |
3860 | .flags.experimental = 1, | |
3861 | }; | |
3862 | ||
56b6aeb0 HMH |
3863 | /************************************************************************* |
3864 | * Video subdriver | |
3865 | */ | |
3866 | ||
d7c1d17d HMH |
3867 | #ifdef CONFIG_THINKPAD_ACPI_VIDEO |
3868 | ||
f74a27d4 HMH |
3869 | enum video_access_mode { |
3870 | TPACPI_VIDEO_NONE = 0, | |
3871 | TPACPI_VIDEO_570, /* 570 */ | |
3872 | TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ | |
3873 | TPACPI_VIDEO_NEW, /* all others */ | |
3874 | }; | |
3875 | ||
3876 | enum { /* video status flags, based on VIDEO_570 */ | |
3877 | TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ | |
3878 | TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ | |
3879 | TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ | |
3880 | }; | |
3881 | ||
3882 | enum { /* TPACPI_VIDEO_570 constants */ | |
3883 | TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ | |
3884 | TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to | |
3885 | * video_status_flags */ | |
3886 | TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ | |
3887 | TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ | |
3888 | }; | |
3889 | ||
9a8e1738 HMH |
3890 | static enum video_access_mode video_supported; |
3891 | static int video_orig_autosw; | |
78f81cc4 | 3892 | |
f74a27d4 HMH |
3893 | static int video_autosw_get(void); |
3894 | static int video_autosw_set(int enable); | |
3895 | ||
e0c7dfe7 | 3896 | TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ |
56b6aeb0 | 3897 | |
a5763f22 | 3898 | static int __init video_init(struct ibm_init_struct *iibm) |
1da177e4 | 3899 | { |
78f81cc4 BD |
3900 | int ivga; |
3901 | ||
fe08bc4b HMH |
3902 | vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); |
3903 | ||
e0c7dfe7 HMH |
3904 | TPACPI_ACPIHANDLE_INIT(vid); |
3905 | TPACPI_ACPIHANDLE_INIT(vid2); | |
5fba344c | 3906 | |
78f81cc4 BD |
3907 | if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) |
3908 | /* G41, assume IVGA doesn't change */ | |
3909 | vid_handle = vid2_handle; | |
3910 | ||
3911 | if (!vid_handle) | |
3912 | /* video switching not supported on R30, R31 */ | |
efa27145 | 3913 | video_supported = TPACPI_VIDEO_NONE; |
78f81cc4 BD |
3914 | else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) |
3915 | /* 570 */ | |
efa27145 | 3916 | video_supported = TPACPI_VIDEO_570; |
78f81cc4 BD |
3917 | else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) |
3918 | /* 600e/x, 770e, 770x */ | |
efa27145 | 3919 | video_supported = TPACPI_VIDEO_770; |
78f81cc4 BD |
3920 | else |
3921 | /* all others */ | |
efa27145 | 3922 | video_supported = TPACPI_VIDEO_NEW; |
1da177e4 | 3923 | |
fe08bc4b HMH |
3924 | vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", |
3925 | str_supported(video_supported != TPACPI_VIDEO_NONE), | |
3926 | video_supported); | |
3927 | ||
5fba344c | 3928 | return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1; |
1da177e4 LT |
3929 | } |
3930 | ||
56b6aeb0 HMH |
3931 | static void video_exit(void) |
3932 | { | |
83f34724 HMH |
3933 | dbg_printk(TPACPI_DBG_EXIT, |
3934 | "restoring original video autoswitch mode\n"); | |
3935 | if (video_autosw_set(video_orig_autosw)) | |
e0c7dfe7 | 3936 | printk(TPACPI_ERR "error while trying to restore original " |
83f34724 | 3937 | "video autoswitch mode\n"); |
56b6aeb0 HMH |
3938 | } |
3939 | ||
83f34724 | 3940 | static int video_outputsw_get(void) |
1da177e4 LT |
3941 | { |
3942 | int status = 0; | |
3943 | int i; | |
3944 | ||
83f34724 HMH |
3945 | switch (video_supported) { |
3946 | case TPACPI_VIDEO_570: | |
3947 | if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", | |
3948 | TP_ACPI_VIDEO_570_PHSCMD)) | |
3949 | return -EIO; | |
3950 | status = i & TP_ACPI_VIDEO_570_PHSMASK; | |
3951 | break; | |
3952 | case TPACPI_VIDEO_770: | |
3953 | if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) | |
3954 | return -EIO; | |
3955 | if (i) | |
3956 | status |= TP_ACPI_VIDEO_S_LCD; | |
3957 | if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) | |
3958 | return -EIO; | |
3959 | if (i) | |
3960 | status |= TP_ACPI_VIDEO_S_CRT; | |
3961 | break; | |
3962 | case TPACPI_VIDEO_NEW: | |
3963 | if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || | |
3964 | !acpi_evalf(NULL, &i, "\\VCDC", "d")) | |
3965 | return -EIO; | |
3966 | if (i) | |
3967 | status |= TP_ACPI_VIDEO_S_CRT; | |
3968 | ||
3969 | if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || | |
3970 | !acpi_evalf(NULL, &i, "\\VCDL", "d")) | |
3971 | return -EIO; | |
3972 | if (i) | |
3973 | status |= TP_ACPI_VIDEO_S_LCD; | |
3974 | if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) | |
3975 | return -EIO; | |
3976 | if (i) | |
3977 | status |= TP_ACPI_VIDEO_S_DVI; | |
3978 | break; | |
3979 | default: | |
3980 | return -ENOSYS; | |
78f81cc4 BD |
3981 | } |
3982 | ||
3983 | return status; | |
3984 | } | |
1da177e4 | 3985 | |
83f34724 | 3986 | static int video_outputsw_set(int status) |
78f81cc4 | 3987 | { |
83f34724 HMH |
3988 | int autosw; |
3989 | int res = 0; | |
3990 | ||
3991 | switch (video_supported) { | |
3992 | case TPACPI_VIDEO_570: | |
3993 | res = acpi_evalf(NULL, NULL, | |
3994 | "\\_SB.PHS2", "vdd", | |
3995 | TP_ACPI_VIDEO_570_PHS2CMD, | |
3996 | status | TP_ACPI_VIDEO_570_PHS2SET); | |
3997 | break; | |
3998 | case TPACPI_VIDEO_770: | |
3999 | autosw = video_autosw_get(); | |
4000 | if (autosw < 0) | |
4001 | return autosw; | |
1da177e4 | 4002 | |
83f34724 HMH |
4003 | res = video_autosw_set(1); |
4004 | if (res) | |
4005 | return res; | |
4006 | res = acpi_evalf(vid_handle, NULL, | |
4007 | "ASWT", "vdd", status * 0x100, 0); | |
4008 | if (!autosw && video_autosw_set(autosw)) { | |
35ff8b9f HMH |
4009 | printk(TPACPI_ERR |
4010 | "video auto-switch left enabled due to error\n"); | |
83f34724 HMH |
4011 | return -EIO; |
4012 | } | |
4013 | break; | |
4014 | case TPACPI_VIDEO_NEW: | |
4015 | res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && | |
35ff8b9f | 4016 | acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); |
83f34724 HMH |
4017 | break; |
4018 | default: | |
4019 | return -ENOSYS; | |
4020 | } | |
1da177e4 | 4021 | |
83f34724 | 4022 | return (res)? 0 : -EIO; |
1da177e4 LT |
4023 | } |
4024 | ||
83f34724 | 4025 | static int video_autosw_get(void) |
78f81cc4 | 4026 | { |
83f34724 | 4027 | int autosw = 0; |
78f81cc4 | 4028 | |
83f34724 HMH |
4029 | switch (video_supported) { |
4030 | case TPACPI_VIDEO_570: | |
4031 | if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) | |
4032 | return -EIO; | |
4033 | break; | |
4034 | case TPACPI_VIDEO_770: | |
4035 | case TPACPI_VIDEO_NEW: | |
4036 | if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) | |
4037 | return -EIO; | |
4038 | break; | |
4039 | default: | |
4040 | return -ENOSYS; | |
4041 | } | |
78f81cc4 | 4042 | |
83f34724 | 4043 | return autosw & 1; |
78f81cc4 BD |
4044 | } |
4045 | ||
83f34724 | 4046 | static int video_autosw_set(int enable) |
78f81cc4 | 4047 | { |
83f34724 HMH |
4048 | if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0)) |
4049 | return -EIO; | |
4050 | return 0; | |
78f81cc4 BD |
4051 | } |
4052 | ||
83f34724 | 4053 | static int video_outputsw_cycle(void) |
78f81cc4 | 4054 | { |
83f34724 HMH |
4055 | int autosw = video_autosw_get(); |
4056 | int res; | |
78f81cc4 | 4057 | |
83f34724 HMH |
4058 | if (autosw < 0) |
4059 | return autosw; | |
78f81cc4 | 4060 | |
83f34724 HMH |
4061 | switch (video_supported) { |
4062 | case TPACPI_VIDEO_570: | |
4063 | res = video_autosw_set(1); | |
4064 | if (res) | |
4065 | return res; | |
4066 | res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); | |
4067 | break; | |
4068 | case TPACPI_VIDEO_770: | |
4069 | case TPACPI_VIDEO_NEW: | |
4070 | res = video_autosw_set(1); | |
4071 | if (res) | |
4072 | return res; | |
4073 | res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); | |
4074 | break; | |
4075 | default: | |
4076 | return -ENOSYS; | |
4077 | } | |
4078 | if (!autosw && video_autosw_set(autosw)) { | |
35ff8b9f HMH |
4079 | printk(TPACPI_ERR |
4080 | "video auto-switch left enabled due to error\n"); | |
83f34724 | 4081 | return -EIO; |
78f81cc4 BD |
4082 | } |
4083 | ||
83f34724 HMH |
4084 | return (res)? 0 : -EIO; |
4085 | } | |
4086 | ||
4087 | static int video_expand_toggle(void) | |
4088 | { | |
4089 | switch (video_supported) { | |
4090 | case TPACPI_VIDEO_570: | |
4091 | return acpi_evalf(ec_handle, NULL, "_Q17", "v")? | |
4092 | 0 : -EIO; | |
4093 | case TPACPI_VIDEO_770: | |
4094 | return acpi_evalf(vid_handle, NULL, "VEXP", "v")? | |
4095 | 0 : -EIO; | |
4096 | case TPACPI_VIDEO_NEW: | |
4097 | return acpi_evalf(NULL, NULL, "\\VEXP", "v")? | |
4098 | 0 : -EIO; | |
4099 | default: | |
4100 | return -ENOSYS; | |
4101 | } | |
4102 | /* not reached */ | |
78f81cc4 BD |
4103 | } |
4104 | ||
56b6aeb0 HMH |
4105 | static int video_read(char *p) |
4106 | { | |
83f34724 | 4107 | int status, autosw; |
56b6aeb0 HMH |
4108 | int len = 0; |
4109 | ||
83f34724 | 4110 | if (video_supported == TPACPI_VIDEO_NONE) { |
56b6aeb0 HMH |
4111 | len += sprintf(p + len, "status:\t\tnot supported\n"); |
4112 | return len; | |
4113 | } | |
4114 | ||
83f34724 HMH |
4115 | status = video_outputsw_get(); |
4116 | if (status < 0) | |
4117 | return status; | |
4118 | ||
4119 | autosw = video_autosw_get(); | |
4120 | if (autosw < 0) | |
4121 | return autosw; | |
4122 | ||
56b6aeb0 HMH |
4123 | len += sprintf(p + len, "status:\t\tsupported\n"); |
4124 | len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0)); | |
4125 | len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1)); | |
efa27145 | 4126 | if (video_supported == TPACPI_VIDEO_NEW) |
56b6aeb0 HMH |
4127 | len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3)); |
4128 | len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0)); | |
4129 | len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n"); | |
4130 | len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n"); | |
efa27145 | 4131 | if (video_supported == TPACPI_VIDEO_NEW) |
56b6aeb0 HMH |
4132 | len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n"); |
4133 | len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n"); | |
4134 | len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n"); | |
4135 | ||
4136 | return len; | |
4137 | } | |
4138 | ||
78f81cc4 | 4139 | static int video_write(char *buf) |
1da177e4 LT |
4140 | { |
4141 | char *cmd; | |
4142 | int enable, disable, status; | |
83f34724 | 4143 | int res; |
1da177e4 | 4144 | |
83f34724 | 4145 | if (video_supported == TPACPI_VIDEO_NONE) |
78f81cc4 BD |
4146 | return -ENODEV; |
4147 | ||
83f34724 HMH |
4148 | enable = 0; |
4149 | disable = 0; | |
1da177e4 LT |
4150 | |
4151 | while ((cmd = next_cmd(&buf))) { | |
4152 | if (strlencmp(cmd, "lcd_enable") == 0) { | |
83f34724 | 4153 | enable |= TP_ACPI_VIDEO_S_LCD; |
1da177e4 | 4154 | } else if (strlencmp(cmd, "lcd_disable") == 0) { |
83f34724 | 4155 | disable |= TP_ACPI_VIDEO_S_LCD; |
1da177e4 | 4156 | } else if (strlencmp(cmd, "crt_enable") == 0) { |
83f34724 | 4157 | enable |= TP_ACPI_VIDEO_S_CRT; |
1da177e4 | 4158 | } else if (strlencmp(cmd, "crt_disable") == 0) { |
83f34724 | 4159 | disable |= TP_ACPI_VIDEO_S_CRT; |
efa27145 | 4160 | } else if (video_supported == TPACPI_VIDEO_NEW && |
78f81cc4 | 4161 | strlencmp(cmd, "dvi_enable") == 0) { |
83f34724 | 4162 | enable |= TP_ACPI_VIDEO_S_DVI; |
efa27145 | 4163 | } else if (video_supported == TPACPI_VIDEO_NEW && |
78f81cc4 | 4164 | strlencmp(cmd, "dvi_disable") == 0) { |
83f34724 | 4165 | disable |= TP_ACPI_VIDEO_S_DVI; |
1da177e4 | 4166 | } else if (strlencmp(cmd, "auto_enable") == 0) { |
83f34724 HMH |
4167 | res = video_autosw_set(1); |
4168 | if (res) | |
4169 | return res; | |
1da177e4 | 4170 | } else if (strlencmp(cmd, "auto_disable") == 0) { |
83f34724 HMH |
4171 | res = video_autosw_set(0); |
4172 | if (res) | |
4173 | return res; | |
1da177e4 | 4174 | } else if (strlencmp(cmd, "video_switch") == 0) { |
83f34724 HMH |
4175 | res = video_outputsw_cycle(); |
4176 | if (res) | |
4177 | return res; | |
1da177e4 | 4178 | } else if (strlencmp(cmd, "expand_toggle") == 0) { |
83f34724 HMH |
4179 | res = video_expand_toggle(); |
4180 | if (res) | |
4181 | return res; | |
1da177e4 LT |
4182 | } else |
4183 | return -EINVAL; | |
4184 | } | |
4185 | ||
4186 | if (enable || disable) { | |
83f34724 HMH |
4187 | status = video_outputsw_get(); |
4188 | if (status < 0) | |
4189 | return status; | |
4190 | res = video_outputsw_set((status & ~disable) | enable); | |
4191 | if (res) | |
4192 | return res; | |
1da177e4 LT |
4193 | } |
4194 | ||
4195 | return 0; | |
4196 | } | |
4197 | ||
a5763f22 HMH |
4198 | static struct ibm_struct video_driver_data = { |
4199 | .name = "video", | |
4200 | .read = video_read, | |
4201 | .write = video_write, | |
4202 | .exit = video_exit, | |
4203 | }; | |
4204 | ||
d7c1d17d HMH |
4205 | #endif /* CONFIG_THINKPAD_ACPI_VIDEO */ |
4206 | ||
56b6aeb0 HMH |
4207 | /************************************************************************* |
4208 | * Light (thinklight) subdriver | |
4209 | */ | |
1da177e4 | 4210 | |
e0c7dfe7 HMH |
4211 | TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ |
4212 | TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ | |
56b6aeb0 | 4213 | |
4fa6811b HMH |
4214 | static int light_get_status(void) |
4215 | { | |
4216 | int status = 0; | |
4217 | ||
4218 | if (tp_features.light_status) { | |
4219 | if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) | |
4220 | return -EIO; | |
4221 | return (!!status); | |
4222 | } | |
4223 | ||
4224 | return -ENXIO; | |
4225 | } | |
4226 | ||
4227 | static int light_set_status(int status) | |
4228 | { | |
4229 | int rc; | |
4230 | ||
4231 | if (tp_features.light) { | |
4232 | if (cmos_handle) { | |
4233 | rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", | |
4234 | (status)? | |
4235 | TP_CMOS_THINKLIGHT_ON : | |
4236 | TP_CMOS_THINKLIGHT_OFF); | |
4237 | } else { | |
4238 | rc = acpi_evalf(lght_handle, NULL, NULL, "vd", | |
4239 | (status)? 1 : 0); | |
4240 | } | |
4241 | return (rc)? 0 : -EIO; | |
4242 | } | |
4243 | ||
4244 | return -ENXIO; | |
4245 | } | |
4246 | ||
e306501d HMH |
4247 | static void light_set_status_worker(struct work_struct *work) |
4248 | { | |
4249 | struct tpacpi_led_classdev *data = | |
4250 | container_of(work, struct tpacpi_led_classdev, work); | |
4251 | ||
4252 | if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING)) | |
75bd3bf2 | 4253 | light_set_status((data->new_state != TPACPI_LED_OFF)); |
e306501d HMH |
4254 | } |
4255 | ||
4256 | static void light_sysfs_set(struct led_classdev *led_cdev, | |
4257 | enum led_brightness brightness) | |
4258 | { | |
4259 | struct tpacpi_led_classdev *data = | |
4260 | container_of(led_cdev, | |
4261 | struct tpacpi_led_classdev, | |
4262 | led_classdev); | |
75bd3bf2 HMH |
4263 | data->new_state = (brightness != LED_OFF) ? |
4264 | TPACPI_LED_ON : TPACPI_LED_OFF; | |
e0e3c061 | 4265 | queue_work(tpacpi_wq, &data->work); |
e306501d HMH |
4266 | } |
4267 | ||
4268 | static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) | |
4269 | { | |
4270 | return (light_get_status() == 1)? LED_FULL : LED_OFF; | |
4271 | } | |
4272 | ||
4273 | static struct tpacpi_led_classdev tpacpi_led_thinklight = { | |
4274 | .led_classdev = { | |
4275 | .name = "tpacpi::thinklight", | |
4276 | .brightness_set = &light_sysfs_set, | |
4277 | .brightness_get = &light_sysfs_get, | |
4278 | } | |
4279 | }; | |
4280 | ||
a5763f22 | 4281 | static int __init light_init(struct ibm_init_struct *iibm) |
1da177e4 | 4282 | { |
9c0a76e1 | 4283 | int rc; |
e306501d | 4284 | |
fe08bc4b HMH |
4285 | vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); |
4286 | ||
e0c7dfe7 HMH |
4287 | TPACPI_ACPIHANDLE_INIT(ledb); |
4288 | TPACPI_ACPIHANDLE_INIT(lght); | |
4289 | TPACPI_ACPIHANDLE_INIT(cmos); | |
e306501d | 4290 | INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker); |
5fba344c | 4291 | |
78f81cc4 | 4292 | /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ |
d8fd94d9 | 4293 | tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; |
78f81cc4 | 4294 | |
d8fd94d9 | 4295 | if (tp_features.light) |
78f81cc4 BD |
4296 | /* light status not supported on |
4297 | 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ | |
d8fd94d9 HMH |
4298 | tp_features.light_status = |
4299 | acpi_evalf(ec_handle, NULL, "KBLT", "qv"); | |
1da177e4 | 4300 | |
9c0a76e1 HMH |
4301 | vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", |
4302 | str_supported(tp_features.light), | |
4303 | str_supported(tp_features.light_status)); | |
fe08bc4b | 4304 | |
9c0a76e1 HMH |
4305 | if (!tp_features.light) |
4306 | return 1; | |
4307 | ||
4308 | rc = led_classdev_register(&tpacpi_pdev->dev, | |
4309 | &tpacpi_led_thinklight.led_classdev); | |
e306501d HMH |
4310 | |
4311 | if (rc < 0) { | |
4312 | tp_features.light = 0; | |
4313 | tp_features.light_status = 0; | |
9c0a76e1 HMH |
4314 | } else { |
4315 | rc = 0; | |
e306501d | 4316 | } |
9c0a76e1 | 4317 | |
e306501d HMH |
4318 | return rc; |
4319 | } | |
4320 | ||
4321 | static void light_exit(void) | |
4322 | { | |
4323 | led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); | |
4324 | if (work_pending(&tpacpi_led_thinklight.work)) | |
e0e3c061 | 4325 | flush_workqueue(tpacpi_wq); |
1da177e4 LT |
4326 | } |
4327 | ||
78f81cc4 | 4328 | static int light_read(char *p) |
1da177e4 LT |
4329 | { |
4330 | int len = 0; | |
4fa6811b | 4331 | int status; |
1da177e4 | 4332 | |
d8fd94d9 | 4333 | if (!tp_features.light) { |
78f81cc4 | 4334 | len += sprintf(p + len, "status:\t\tnot supported\n"); |
d8fd94d9 | 4335 | } else if (!tp_features.light_status) { |
78f81cc4 BD |
4336 | len += sprintf(p + len, "status:\t\tunknown\n"); |
4337 | len += sprintf(p + len, "commands:\ton, off\n"); | |
4338 | } else { | |
4fa6811b HMH |
4339 | status = light_get_status(); |
4340 | if (status < 0) | |
4341 | return status; | |
1da177e4 | 4342 | len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0)); |
78f81cc4 BD |
4343 | len += sprintf(p + len, "commands:\ton, off\n"); |
4344 | } | |
1da177e4 LT |
4345 | |
4346 | return len; | |
4347 | } | |
4348 | ||
78f81cc4 | 4349 | static int light_write(char *buf) |
1da177e4 | 4350 | { |
1da177e4 | 4351 | char *cmd; |
4fa6811b | 4352 | int newstatus = 0; |
78f81cc4 | 4353 | |
d8fd94d9 | 4354 | if (!tp_features.light) |
78f81cc4 BD |
4355 | return -ENODEV; |
4356 | ||
1da177e4 LT |
4357 | while ((cmd = next_cmd(&buf))) { |
4358 | if (strlencmp(cmd, "on") == 0) { | |
4fa6811b | 4359 | newstatus = 1; |
1da177e4 | 4360 | } else if (strlencmp(cmd, "off") == 0) { |
4fa6811b | 4361 | newstatus = 0; |
1da177e4 LT |
4362 | } else |
4363 | return -EINVAL; | |
1da177e4 LT |
4364 | } |
4365 | ||
4fa6811b | 4366 | return light_set_status(newstatus); |
1da177e4 LT |
4367 | } |
4368 | ||
a5763f22 HMH |
4369 | static struct ibm_struct light_driver_data = { |
4370 | .name = "light", | |
4371 | .read = light_read, | |
4372 | .write = light_write, | |
e306501d | 4373 | .exit = light_exit, |
a5763f22 HMH |
4374 | }; |
4375 | ||
56b6aeb0 HMH |
4376 | /************************************************************************* |
4377 | * Dock subdriver | |
4378 | */ | |
1da177e4 | 4379 | |
85998248 | 4380 | #ifdef CONFIG_THINKPAD_ACPI_DOCK |
56b6aeb0 | 4381 | |
f74a27d4 HMH |
4382 | static void dock_notify(struct ibm_struct *ibm, u32 event); |
4383 | static int dock_read(char *p); | |
4384 | static int dock_write(char *buf); | |
4385 | ||
e0c7dfe7 | 4386 | TPACPI_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */ |
56b6aeb0 HMH |
4387 | "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */ |
4388 | "\\_SB.PCI0.PCI1.DOCK", /* all others */ | |
4389 | "\\_SB.PCI.ISA.SLCE", /* 570 */ | |
4390 | ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */ | |
4391 | ||
5fba344c | 4392 | /* don't list other alternatives as we install a notify handler on the 570 */ |
e0c7dfe7 | 4393 | TPACPI_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */ |
5fba344c | 4394 | |
1ba90e3a TR |
4395 | static const struct acpi_device_id ibm_pci_device_ids[] = { |
4396 | {PCI_ROOT_HID_STRING, 0}, | |
4397 | {"", 0}, | |
4398 | }; | |
4399 | ||
d94a7f16 HMH |
4400 | static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = { |
4401 | { | |
4402 | .notify = dock_notify, | |
4403 | .handle = &dock_handle, | |
4404 | .type = ACPI_SYSTEM_NOTIFY, | |
4405 | }, | |
4406 | { | |
996fba08 HMH |
4407 | /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING. |
4408 | * We just use it to get notifications of dock hotplug | |
4409 | * in very old thinkpads */ | |
1ba90e3a | 4410 | .hid = ibm_pci_device_ids, |
d94a7f16 HMH |
4411 | .notify = dock_notify, |
4412 | .handle = &pci_handle, | |
4413 | .type = ACPI_SYSTEM_NOTIFY, | |
4414 | }, | |
4415 | }; | |
4416 | ||
4417 | static struct ibm_struct dock_driver_data[2] = { | |
4418 | { | |
4419 | .name = "dock", | |
4420 | .read = dock_read, | |
4421 | .write = dock_write, | |
4422 | .acpi = &ibm_dock_acpidriver[0], | |
4423 | }, | |
4424 | { | |
4425 | .name = "dock", | |
4426 | .acpi = &ibm_dock_acpidriver[1], | |
4427 | }, | |
4428 | }; | |
4429 | ||
1da177e4 LT |
4430 | #define dock_docked() (_sta(dock_handle) & 1) |
4431 | ||
a5763f22 | 4432 | static int __init dock_init(struct ibm_init_struct *iibm) |
5fba344c | 4433 | { |
fe08bc4b HMH |
4434 | vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n"); |
4435 | ||
e0c7dfe7 | 4436 | TPACPI_ACPIHANDLE_INIT(dock); |
5fba344c | 4437 | |
fe08bc4b HMH |
4438 | vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n", |
4439 | str_supported(dock_handle != NULL)); | |
4440 | ||
5fba344c HMH |
4441 | return (dock_handle)? 0 : 1; |
4442 | } | |
4443 | ||
d94a7f16 HMH |
4444 | static int __init dock_init2(struct ibm_init_struct *iibm) |
4445 | { | |
4446 | int dock2_needed; | |
4447 | ||
4448 | vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n"); | |
4449 | ||
4450 | if (dock_driver_data[0].flags.acpi_driver_registered && | |
4451 | dock_driver_data[0].flags.acpi_notify_installed) { | |
e0c7dfe7 | 4452 | TPACPI_ACPIHANDLE_INIT(pci); |
d94a7f16 HMH |
4453 | dock2_needed = (pci_handle != NULL); |
4454 | vdbg_printk(TPACPI_DBG_INIT, | |
4455 | "dock PCI handler for the TP 570 is %s\n", | |
4456 | str_supported(dock2_needed)); | |
4457 | } else { | |
4458 | vdbg_printk(TPACPI_DBG_INIT, | |
4459 | "dock subdriver part 2 not required\n"); | |
4460 | dock2_needed = 0; | |
4461 | } | |
4462 | ||
4463 | return (dock2_needed)? 0 : 1; | |
4464 | } | |
4465 | ||
56b6aeb0 HMH |
4466 | static void dock_notify(struct ibm_struct *ibm, u32 event) |
4467 | { | |
4468 | int docked = dock_docked(); | |
1ba90e3a TR |
4469 | int pci = ibm->acpi->hid && ibm->acpi->device && |
4470 | acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids); | |
962ce8ca | 4471 | int data; |
56b6aeb0 HMH |
4472 | |
4473 | if (event == 1 && !pci) /* 570 */ | |
962ce8ca | 4474 | data = 1; /* button */ |
56b6aeb0 | 4475 | else if (event == 1 && pci) /* 570 */ |
962ce8ca | 4476 | data = 3; /* dock */ |
56b6aeb0 | 4477 | else if (event == 3 && docked) |
962ce8ca | 4478 | data = 1; /* button */ |
56b6aeb0 | 4479 | else if (event == 3 && !docked) |
962ce8ca | 4480 | data = 2; /* undock */ |
56b6aeb0 | 4481 | else if (event == 0 && docked) |
962ce8ca | 4482 | data = 3; /* dock */ |
56b6aeb0 | 4483 | else { |
e0c7dfe7 | 4484 | printk(TPACPI_ERR "unknown dock event %d, status %d\n", |
56b6aeb0 | 4485 | event, _sta(dock_handle)); |
962ce8ca | 4486 | data = 0; /* unknown */ |
56b6aeb0 | 4487 | } |
14e04fb3 | 4488 | acpi_bus_generate_proc_event(ibm->acpi->device, event, data); |
962ce8ca | 4489 | acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class, |
e0b36fc5 | 4490 | dev_name(&ibm->acpi->device->dev), |
962ce8ca | 4491 | event, data); |
56b6aeb0 HMH |
4492 | } |
4493 | ||
78f81cc4 | 4494 | static int dock_read(char *p) |
1da177e4 LT |
4495 | { |
4496 | int len = 0; | |
4497 | int docked = dock_docked(); | |
4498 | ||
4499 | if (!dock_handle) | |
4500 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
4501 | else if (!docked) | |
4502 | len += sprintf(p + len, "status:\t\tundocked\n"); | |
4503 | else { | |
4504 | len += sprintf(p + len, "status:\t\tdocked\n"); | |
4505 | len += sprintf(p + len, "commands:\tdock, undock\n"); | |
4506 | } | |
4507 | ||
4508 | return len; | |
4509 | } | |
4510 | ||
78f81cc4 | 4511 | static int dock_write(char *buf) |
1da177e4 LT |
4512 | { |
4513 | char *cmd; | |
4514 | ||
4515 | if (!dock_docked()) | |
78f81cc4 | 4516 | return -ENODEV; |
1da177e4 LT |
4517 | |
4518 | while ((cmd = next_cmd(&buf))) { | |
4519 | if (strlencmp(cmd, "undock") == 0) { | |
78f81cc4 BD |
4520 | if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) || |
4521 | !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1)) | |
56b6aeb0 HMH |
4522 | return -EIO; |
4523 | } else if (strlencmp(cmd, "dock") == 0) { | |
4524 | if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1)) | |
4525 | return -EIO; | |
4526 | } else | |
4527 | return -EINVAL; | |
1da177e4 | 4528 | } |
56b6aeb0 HMH |
4529 | |
4530 | return 0; | |
1da177e4 | 4531 | } |
56b6aeb0 | 4532 | |
85998248 | 4533 | #endif /* CONFIG_THINKPAD_ACPI_DOCK */ |
56b6aeb0 HMH |
4534 | |
4535 | /************************************************************************* | |
4536 | * Bay subdriver | |
4537 | */ | |
1da177e4 | 4538 | |
85998248 | 4539 | #ifdef CONFIG_THINKPAD_ACPI_BAY |
f74a27d4 | 4540 | |
e0c7dfe7 | 4541 | TPACPI_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */ |
56b6aeb0 HMH |
4542 | "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */ |
4543 | "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */ | |
4544 | "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */ | |
4545 | ); /* A21e, R30, R31 */ | |
e0c7dfe7 | 4546 | TPACPI_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */ |
56b6aeb0 HMH |
4547 | "_EJ0", /* all others */ |
4548 | ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */ | |
e0c7dfe7 | 4549 | TPACPI_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */ |
56b6aeb0 HMH |
4550 | "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */ |
4551 | ); /* all others */ | |
e0c7dfe7 | 4552 | TPACPI_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */ |
56b6aeb0 HMH |
4553 | "_EJ0", /* 770x */ |
4554 | ); /* all others */ | |
4555 | ||
a5763f22 | 4556 | static int __init bay_init(struct ibm_init_struct *iibm) |
1da177e4 | 4557 | { |
fe08bc4b HMH |
4558 | vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n"); |
4559 | ||
e0c7dfe7 | 4560 | TPACPI_ACPIHANDLE_INIT(bay); |
5fba344c | 4561 | if (bay_handle) |
e0c7dfe7 HMH |
4562 | TPACPI_ACPIHANDLE_INIT(bay_ej); |
4563 | TPACPI_ACPIHANDLE_INIT(bay2); | |
5fba344c | 4564 | if (bay2_handle) |
e0c7dfe7 | 4565 | TPACPI_ACPIHANDLE_INIT(bay2_ej); |
5fba344c | 4566 | |
d8fd94d9 HMH |
4567 | tp_features.bay_status = bay_handle && |
4568 | acpi_evalf(bay_handle, NULL, "_STA", "qv"); | |
4569 | tp_features.bay_status2 = bay2_handle && | |
4570 | acpi_evalf(bay2_handle, NULL, "_STA", "qv"); | |
78f81cc4 | 4571 | |
d8fd94d9 HMH |
4572 | tp_features.bay_eject = bay_handle && bay_ej_handle && |
4573 | (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental); | |
4574 | tp_features.bay_eject2 = bay2_handle && bay2_ej_handle && | |
4575 | (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental); | |
1da177e4 | 4576 | |
fe08bc4b HMH |
4577 | vdbg_printk(TPACPI_DBG_INIT, |
4578 | "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n", | |
d8fd94d9 HMH |
4579 | str_supported(tp_features.bay_status), |
4580 | str_supported(tp_features.bay_eject), | |
4581 | str_supported(tp_features.bay_status2), | |
4582 | str_supported(tp_features.bay_eject2)); | |
fe08bc4b | 4583 | |
d8fd94d9 HMH |
4584 | return (tp_features.bay_status || tp_features.bay_eject || |
4585 | tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1; | |
1da177e4 LT |
4586 | } |
4587 | ||
56b6aeb0 HMH |
4588 | static void bay_notify(struct ibm_struct *ibm, u32 event) |
4589 | { | |
14e04fb3 | 4590 | acpi_bus_generate_proc_event(ibm->acpi->device, event, 0); |
962ce8ca | 4591 | acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class, |
e0b36fc5 | 4592 | dev_name(&ibm->acpi->device->dev), |
962ce8ca | 4593 | event, 0); |
56b6aeb0 HMH |
4594 | } |
4595 | ||
78f81cc4 BD |
4596 | #define bay_occupied(b) (_sta(b##_handle) & 1) |
4597 | ||
4598 | static int bay_read(char *p) | |
1da177e4 LT |
4599 | { |
4600 | int len = 0; | |
78f81cc4 BD |
4601 | int occupied = bay_occupied(bay); |
4602 | int occupied2 = bay_occupied(bay2); | |
4603 | int eject, eject2; | |
4604 | ||
d8fd94d9 HMH |
4605 | len += sprintf(p + len, "status:\t\t%s\n", |
4606 | tp_features.bay_status ? | |
4607 | (occupied ? "occupied" : "unoccupied") : | |
4608 | "not supported"); | |
4609 | if (tp_features.bay_status2) | |
78f81cc4 BD |
4610 | len += sprintf(p + len, "status2:\t%s\n", occupied2 ? |
4611 | "occupied" : "unoccupied"); | |
4612 | ||
d8fd94d9 HMH |
4613 | eject = tp_features.bay_eject && occupied; |
4614 | eject2 = tp_features.bay_eject2 && occupied2; | |
78f81cc4 BD |
4615 | |
4616 | if (eject && eject2) | |
4617 | len += sprintf(p + len, "commands:\teject, eject2\n"); | |
4618 | else if (eject) | |
1da177e4 | 4619 | len += sprintf(p + len, "commands:\teject\n"); |
78f81cc4 BD |
4620 | else if (eject2) |
4621 | len += sprintf(p + len, "commands:\teject2\n"); | |
1da177e4 LT |
4622 | |
4623 | return len; | |
4624 | } | |
4625 | ||
78f81cc4 | 4626 | static int bay_write(char *buf) |
1da177e4 LT |
4627 | { |
4628 | char *cmd; | |
4629 | ||
d8fd94d9 | 4630 | if (!tp_features.bay_eject && !tp_features.bay_eject2) |
78f81cc4 BD |
4631 | return -ENODEV; |
4632 | ||
1da177e4 | 4633 | while ((cmd = next_cmd(&buf))) { |
d8fd94d9 | 4634 | if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) { |
78f81cc4 BD |
4635 | if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1)) |
4636 | return -EIO; | |
d8fd94d9 | 4637 | } else if (tp_features.bay_eject2 && |
78f81cc4 BD |
4638 | strlencmp(cmd, "eject2") == 0) { |
4639 | if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1)) | |
1da177e4 LT |
4640 | return -EIO; |
4641 | } else | |
4642 | return -EINVAL; | |
4643 | } | |
4644 | ||
4645 | return 0; | |
78f81cc4 | 4646 | } |
a5763f22 | 4647 | |
8d376cd6 HMH |
4648 | static struct tp_acpi_drv_struct ibm_bay_acpidriver = { |
4649 | .notify = bay_notify, | |
4650 | .handle = &bay_handle, | |
4651 | .type = ACPI_SYSTEM_NOTIFY, | |
4652 | }; | |
4653 | ||
a5763f22 HMH |
4654 | static struct ibm_struct bay_driver_data = { |
4655 | .name = "bay", | |
4656 | .read = bay_read, | |
4657 | .write = bay_write, | |
8d376cd6 | 4658 | .acpi = &ibm_bay_acpidriver, |
a5763f22 HMH |
4659 | }; |
4660 | ||
85998248 | 4661 | #endif /* CONFIG_THINKPAD_ACPI_BAY */ |
1da177e4 | 4662 | |
56b6aeb0 HMH |
4663 | /************************************************************************* |
4664 | * CMOS subdriver | |
4665 | */ | |
4666 | ||
b616004c HMH |
4667 | /* sysfs cmos_command -------------------------------------------------- */ |
4668 | static ssize_t cmos_command_store(struct device *dev, | |
4669 | struct device_attribute *attr, | |
4670 | const char *buf, size_t count) | |
4671 | { | |
4672 | unsigned long cmos_cmd; | |
4673 | int res; | |
4674 | ||
4675 | if (parse_strtoul(buf, 21, &cmos_cmd)) | |
4676 | return -EINVAL; | |
4677 | ||
4678 | res = issue_thinkpad_cmos_command(cmos_cmd); | |
4679 | return (res)? res : count; | |
4680 | } | |
4681 | ||
4682 | static struct device_attribute dev_attr_cmos_command = | |
4683 | __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store); | |
4684 | ||
4685 | /* --------------------------------------------------------------------- */ | |
4686 | ||
a5763f22 | 4687 | static int __init cmos_init(struct ibm_init_struct *iibm) |
5fba344c | 4688 | { |
b616004c HMH |
4689 | int res; |
4690 | ||
fe08bc4b HMH |
4691 | vdbg_printk(TPACPI_DBG_INIT, |
4692 | "initializing cmos commands subdriver\n"); | |
4693 | ||
e0c7dfe7 | 4694 | TPACPI_ACPIHANDLE_INIT(cmos); |
5fba344c | 4695 | |
fe08bc4b HMH |
4696 | vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", |
4697 | str_supported(cmos_handle != NULL)); | |
b616004c HMH |
4698 | |
4699 | res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); | |
4700 | if (res) | |
4701 | return res; | |
4702 | ||
5fba344c HMH |
4703 | return (cmos_handle)? 0 : 1; |
4704 | } | |
4705 | ||
b616004c HMH |
4706 | static void cmos_exit(void) |
4707 | { | |
4708 | device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); | |
4709 | } | |
4710 | ||
78f81cc4 | 4711 | static int cmos_read(char *p) |
1da177e4 LT |
4712 | { |
4713 | int len = 0; | |
4714 | ||
78f81cc4 BD |
4715 | /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, |
4716 | R30, R31, T20-22, X20-21 */ | |
1da177e4 LT |
4717 | if (!cmos_handle) |
4718 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
4719 | else { | |
4720 | len += sprintf(p + len, "status:\t\tsupported\n"); | |
78f81cc4 | 4721 | len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n"); |
1da177e4 LT |
4722 | } |
4723 | ||
4724 | return len; | |
4725 | } | |
4726 | ||
78f81cc4 | 4727 | static int cmos_write(char *buf) |
1da177e4 LT |
4728 | { |
4729 | char *cmd; | |
c9bea99c | 4730 | int cmos_cmd, res; |
1da177e4 LT |
4731 | |
4732 | while ((cmd = next_cmd(&buf))) { | |
78f81cc4 BD |
4733 | if (sscanf(cmd, "%u", &cmos_cmd) == 1 && |
4734 | cmos_cmd >= 0 && cmos_cmd <= 21) { | |
1da177e4 LT |
4735 | /* cmos_cmd set */ |
4736 | } else | |
4737 | return -EINVAL; | |
4738 | ||
c9bea99c HMH |
4739 | res = issue_thinkpad_cmos_command(cmos_cmd); |
4740 | if (res) | |
4741 | return res; | |
1da177e4 LT |
4742 | } |
4743 | ||
4744 | return 0; | |
78f81cc4 BD |
4745 | } |
4746 | ||
a5763f22 HMH |
4747 | static struct ibm_struct cmos_driver_data = { |
4748 | .name = "cmos", | |
4749 | .read = cmos_read, | |
4750 | .write = cmos_write, | |
b616004c | 4751 | .exit = cmos_exit, |
a5763f22 | 4752 | }; |
56b6aeb0 HMH |
4753 | |
4754 | /************************************************************************* | |
4755 | * LED subdriver | |
4756 | */ | |
4757 | ||
f74a27d4 HMH |
4758 | enum led_access_mode { |
4759 | TPACPI_LED_NONE = 0, | |
4760 | TPACPI_LED_570, /* 570 */ | |
4761 | TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ | |
4762 | TPACPI_LED_NEW, /* all others */ | |
4763 | }; | |
4764 | ||
4765 | enum { /* For TPACPI_LED_OLD */ | |
4766 | TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ | |
4767 | TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ | |
4768 | TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ | |
4769 | }; | |
4770 | ||
9a8e1738 | 4771 | static enum led_access_mode led_supported; |
78f81cc4 | 4772 | |
e0c7dfe7 | 4773 | TPACPI_HANDLE(led, ec, "SLED", /* 570 */ |
35ff8b9f HMH |
4774 | "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */ |
4775 | /* T20-22, X20-21 */ | |
56b6aeb0 HMH |
4776 | "LED", /* all others */ |
4777 | ); /* R30, R31 */ | |
4778 | ||
af116101 HMH |
4779 | #define TPACPI_LED_NUMLEDS 8 |
4780 | static struct tpacpi_led_classdev *tpacpi_leds; | |
4781 | static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; | |
e3aa51fe | 4782 | static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { |
af116101 HMH |
4783 | /* there's a limit of 19 chars + NULL before 2.6.26 */ |
4784 | "tpacpi::power", | |
4785 | "tpacpi:orange:batt", | |
4786 | "tpacpi:green:batt", | |
4787 | "tpacpi::dock_active", | |
4788 | "tpacpi::bay_active", | |
4789 | "tpacpi::dock_batt", | |
4790 | "tpacpi::unknown_led", | |
4791 | "tpacpi::standby", | |
4792 | }; | |
a4d5effc HMH |
4793 | #define TPACPI_SAFE_LEDS 0x0081U |
4794 | ||
4795 | static inline bool tpacpi_is_led_restricted(const unsigned int led) | |
4796 | { | |
4797 | #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS | |
4798 | return false; | |
4799 | #else | |
4800 | return (TPACPI_SAFE_LEDS & (1 << led)) == 0; | |
4801 | #endif | |
4802 | } | |
af116101 | 4803 | |
24e45bbe | 4804 | static int led_get_status(const unsigned int led) |
4fa6811b HMH |
4805 | { |
4806 | int status; | |
af116101 | 4807 | enum led_status_t led_s; |
4fa6811b HMH |
4808 | |
4809 | switch (led_supported) { | |
4810 | case TPACPI_LED_570: | |
4811 | if (!acpi_evalf(ec_handle, | |
4812 | &status, "GLED", "dd", 1 << led)) | |
4813 | return -EIO; | |
af116101 | 4814 | led_s = (status == 0)? |
4fa6811b HMH |
4815 | TPACPI_LED_OFF : |
4816 | ((status == 1)? | |
4817 | TPACPI_LED_ON : | |
4818 | TPACPI_LED_BLINK); | |
af116101 HMH |
4819 | tpacpi_led_state_cache[led] = led_s; |
4820 | return led_s; | |
4fa6811b HMH |
4821 | default: |
4822 | return -ENXIO; | |
4823 | } | |
4824 | ||
4825 | /* not reached */ | |
4826 | } | |
4827 | ||
24e45bbe HMH |
4828 | static int led_set_status(const unsigned int led, |
4829 | const enum led_status_t ledstatus) | |
4fa6811b HMH |
4830 | { |
4831 | /* off, on, blink. Index is led_status_t */ | |
24e45bbe HMH |
4832 | static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; |
4833 | static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; | |
4fa6811b HMH |
4834 | |
4835 | int rc = 0; | |
4836 | ||
4837 | switch (led_supported) { | |
4838 | case TPACPI_LED_570: | |
24e45bbe | 4839 | /* 570 */ |
a4d5effc | 4840 | if (unlikely(led > 7)) |
24e45bbe | 4841 | return -EINVAL; |
a4d5effc HMH |
4842 | if (unlikely(tpacpi_is_led_restricted(led))) |
4843 | return -EPERM; | |
24e45bbe HMH |
4844 | if (!acpi_evalf(led_handle, NULL, NULL, "vdd", |
4845 | (1 << led), led_sled_arg1[ledstatus])) | |
4846 | rc = -EIO; | |
4847 | break; | |
4fa6811b | 4848 | case TPACPI_LED_OLD: |
24e45bbe | 4849 | /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ |
a4d5effc | 4850 | if (unlikely(led > 7)) |
24e45bbe | 4851 | return -EINVAL; |
a4d5effc HMH |
4852 | if (unlikely(tpacpi_is_led_restricted(led))) |
4853 | return -EPERM; | |
24e45bbe HMH |
4854 | rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); |
4855 | if (rc >= 0) | |
4856 | rc = ec_write(TPACPI_LED_EC_HLBL, | |
4857 | (ledstatus == TPACPI_LED_BLINK) << led); | |
4858 | if (rc >= 0) | |
4859 | rc = ec_write(TPACPI_LED_EC_HLCL, | |
4860 | (ledstatus != TPACPI_LED_OFF) << led); | |
4861 | break; | |
4fa6811b | 4862 | case TPACPI_LED_NEW: |
24e45bbe | 4863 | /* all others */ |
a4d5effc HMH |
4864 | if (unlikely(led >= TPACPI_LED_NUMLEDS)) |
4865 | return -EINVAL; | |
4866 | if (unlikely(tpacpi_is_led_restricted(led))) | |
4867 | return -EPERM; | |
24e45bbe HMH |
4868 | if (!acpi_evalf(led_handle, NULL, NULL, "vdd", |
4869 | led, led_led_arg1[ledstatus])) | |
4870 | rc = -EIO; | |
4871 | break; | |
4fa6811b HMH |
4872 | default: |
4873 | rc = -ENXIO; | |
4874 | } | |
4875 | ||
af116101 HMH |
4876 | if (!rc) |
4877 | tpacpi_led_state_cache[led] = ledstatus; | |
4878 | ||
4879 | return rc; | |
4880 | } | |
4881 | ||
af116101 HMH |
4882 | static void led_set_status_worker(struct work_struct *work) |
4883 | { | |
4884 | struct tpacpi_led_classdev *data = | |
4885 | container_of(work, struct tpacpi_led_classdev, work); | |
4886 | ||
4887 | if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING)) | |
75bd3bf2 | 4888 | led_set_status(data->led, data->new_state); |
af116101 HMH |
4889 | } |
4890 | ||
4891 | static void led_sysfs_set(struct led_classdev *led_cdev, | |
4892 | enum led_brightness brightness) | |
4893 | { | |
4894 | struct tpacpi_led_classdev *data = container_of(led_cdev, | |
4895 | struct tpacpi_led_classdev, led_classdev); | |
4896 | ||
75bd3bf2 HMH |
4897 | if (brightness == LED_OFF) |
4898 | data->new_state = TPACPI_LED_OFF; | |
4899 | else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK) | |
4900 | data->new_state = TPACPI_LED_ON; | |
4901 | else | |
4902 | data->new_state = TPACPI_LED_BLINK; | |
4903 | ||
e0e3c061 | 4904 | queue_work(tpacpi_wq, &data->work); |
af116101 HMH |
4905 | } |
4906 | ||
4907 | static int led_sysfs_blink_set(struct led_classdev *led_cdev, | |
4908 | unsigned long *delay_on, unsigned long *delay_off) | |
4909 | { | |
4910 | struct tpacpi_led_classdev *data = container_of(led_cdev, | |
4911 | struct tpacpi_led_classdev, led_classdev); | |
4912 | ||
4913 | /* Can we choose the flash rate? */ | |
4914 | if (*delay_on == 0 && *delay_off == 0) { | |
4915 | /* yes. set them to the hardware blink rate (1 Hz) */ | |
4916 | *delay_on = 500; /* ms */ | |
4917 | *delay_off = 500; /* ms */ | |
4918 | } else if ((*delay_on != 500) || (*delay_off != 500)) | |
4919 | return -EINVAL; | |
4920 | ||
75bd3bf2 | 4921 | data->new_state = TPACPI_LED_BLINK; |
e0e3c061 | 4922 | queue_work(tpacpi_wq, &data->work); |
af116101 HMH |
4923 | |
4924 | return 0; | |
4925 | } | |
4926 | ||
4927 | static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev) | |
4928 | { | |
4929 | int rc; | |
4930 | ||
4931 | struct tpacpi_led_classdev *data = container_of(led_cdev, | |
4932 | struct tpacpi_led_classdev, led_classdev); | |
4933 | ||
4934 | rc = led_get_status(data->led); | |
4935 | ||
4936 | if (rc == TPACPI_LED_OFF || rc < 0) | |
4937 | rc = LED_OFF; /* no error handling in led class :( */ | |
4938 | else | |
4939 | rc = LED_FULL; | |
4940 | ||
4fa6811b HMH |
4941 | return rc; |
4942 | } | |
4943 | ||
af116101 HMH |
4944 | static void led_exit(void) |
4945 | { | |
4946 | unsigned int i; | |
4947 | ||
4948 | for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { | |
4949 | if (tpacpi_leds[i].led_classdev.name) | |
4950 | led_classdev_unregister(&tpacpi_leds[i].led_classdev); | |
4951 | } | |
4952 | ||
4953 | kfree(tpacpi_leds); | |
af116101 HMH |
4954 | } |
4955 | ||
a4d5effc HMH |
4956 | static int __init tpacpi_init_led(unsigned int led) |
4957 | { | |
4958 | int rc; | |
4959 | ||
4960 | tpacpi_leds[led].led = led; | |
4961 | ||
4962 | tpacpi_leds[led].led_classdev.brightness_set = &led_sysfs_set; | |
4963 | tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set; | |
4964 | if (led_supported == TPACPI_LED_570) | |
4965 | tpacpi_leds[led].led_classdev.brightness_get = | |
4966 | &led_sysfs_get; | |
4967 | ||
4968 | tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led]; | |
4969 | ||
4970 | INIT_WORK(&tpacpi_leds[led].work, led_set_status_worker); | |
4971 | ||
4972 | rc = led_classdev_register(&tpacpi_pdev->dev, | |
4973 | &tpacpi_leds[led].led_classdev); | |
4974 | if (rc < 0) | |
4975 | tpacpi_leds[led].led_classdev.name = NULL; | |
4976 | ||
4977 | return rc; | |
4978 | } | |
4979 | ||
a5763f22 | 4980 | static int __init led_init(struct ibm_init_struct *iibm) |
78f81cc4 | 4981 | { |
af116101 HMH |
4982 | unsigned int i; |
4983 | int rc; | |
4984 | ||
fe08bc4b HMH |
4985 | vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); |
4986 | ||
e0c7dfe7 | 4987 | TPACPI_ACPIHANDLE_INIT(led); |
5fba344c | 4988 | |
78f81cc4 BD |
4989 | if (!led_handle) |
4990 | /* led not supported on R30, R31 */ | |
efa27145 | 4991 | led_supported = TPACPI_LED_NONE; |
78f81cc4 BD |
4992 | else if (strlencmp(led_path, "SLED") == 0) |
4993 | /* 570 */ | |
efa27145 | 4994 | led_supported = TPACPI_LED_570; |
78f81cc4 BD |
4995 | else if (strlencmp(led_path, "SYSL") == 0) |
4996 | /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ | |
efa27145 | 4997 | led_supported = TPACPI_LED_OLD; |
78f81cc4 BD |
4998 | else |
4999 | /* all others */ | |
efa27145 | 5000 | led_supported = TPACPI_LED_NEW; |
78f81cc4 | 5001 | |
fe08bc4b HMH |
5002 | vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", |
5003 | str_supported(led_supported), led_supported); | |
5004 | ||
af116101 HMH |
5005 | tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS, |
5006 | GFP_KERNEL); | |
5007 | if (!tpacpi_leds) { | |
5008 | printk(TPACPI_ERR "Out of memory for LED data\n"); | |
5009 | return -ENOMEM; | |
5010 | } | |
5011 | ||
5012 | for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { | |
a4d5effc HMH |
5013 | if (!tpacpi_is_led_restricted(i)) { |
5014 | rc = tpacpi_init_led(i); | |
5015 | if (rc < 0) { | |
5016 | led_exit(); | |
5017 | return rc; | |
5018 | } | |
af116101 HMH |
5019 | } |
5020 | } | |
5021 | ||
a4d5effc HMH |
5022 | #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS |
5023 | if (led_supported != TPACPI_LED_NONE) | |
5024 | printk(TPACPI_NOTICE | |
5025 | "warning: userspace override of important " | |
5026 | "firmware LEDs is enabled\n"); | |
5027 | #endif | |
5fba344c | 5028 | return (led_supported != TPACPI_LED_NONE)? 0 : 1; |
78f81cc4 BD |
5029 | } |
5030 | ||
4fa6811b HMH |
5031 | #define str_led_status(s) \ |
5032 | ((s) == TPACPI_LED_OFF ? "off" : \ | |
5033 | ((s) == TPACPI_LED_ON ? "on" : "blinking")) | |
78f81cc4 BD |
5034 | |
5035 | static int led_read(char *p) | |
1da177e4 LT |
5036 | { |
5037 | int len = 0; | |
5038 | ||
78f81cc4 BD |
5039 | if (!led_supported) { |
5040 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
5041 | return len; | |
5042 | } | |
5043 | len += sprintf(p + len, "status:\t\tsupported\n"); | |
5044 | ||
efa27145 | 5045 | if (led_supported == TPACPI_LED_570) { |
78f81cc4 BD |
5046 | /* 570 */ |
5047 | int i, status; | |
5048 | for (i = 0; i < 8; i++) { | |
4fa6811b HMH |
5049 | status = led_get_status(i); |
5050 | if (status < 0) | |
78f81cc4 BD |
5051 | return -EIO; |
5052 | len += sprintf(p + len, "%d:\t\t%s\n", | |
4fa6811b | 5053 | i, str_led_status(status)); |
78f81cc4 BD |
5054 | } |
5055 | } | |
5056 | ||
1da177e4 | 5057 | len += sprintf(p + len, "commands:\t" |
78f81cc4 | 5058 | "<led> on, <led> off, <led> blink (<led> is 0-7)\n"); |
1da177e4 LT |
5059 | |
5060 | return len; | |
5061 | } | |
5062 | ||
78f81cc4 | 5063 | static int led_write(char *buf) |
1da177e4 LT |
5064 | { |
5065 | char *cmd; | |
4fa6811b HMH |
5066 | int led, rc; |
5067 | enum led_status_t s; | |
78f81cc4 BD |
5068 | |
5069 | if (!led_supported) | |
5070 | return -ENODEV; | |
1da177e4 LT |
5071 | |
5072 | while ((cmd = next_cmd(&buf))) { | |
78f81cc4 | 5073 | if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7) |
1da177e4 LT |
5074 | return -EINVAL; |
5075 | ||
78f81cc4 | 5076 | if (strstr(cmd, "off")) { |
4fa6811b | 5077 | s = TPACPI_LED_OFF; |
1da177e4 | 5078 | } else if (strstr(cmd, "on")) { |
4fa6811b | 5079 | s = TPACPI_LED_ON; |
78f81cc4 | 5080 | } else if (strstr(cmd, "blink")) { |
4fa6811b | 5081 | s = TPACPI_LED_BLINK; |
78f81cc4 | 5082 | } else { |
4fa6811b | 5083 | return -EINVAL; |
78f81cc4 | 5084 | } |
4fa6811b HMH |
5085 | |
5086 | rc = led_set_status(led, s); | |
5087 | if (rc < 0) | |
5088 | return rc; | |
78f81cc4 BD |
5089 | } |
5090 | ||
5091 | return 0; | |
5092 | } | |
5093 | ||
a5763f22 HMH |
5094 | static struct ibm_struct led_driver_data = { |
5095 | .name = "led", | |
5096 | .read = led_read, | |
5097 | .write = led_write, | |
af116101 | 5098 | .exit = led_exit, |
a5763f22 HMH |
5099 | }; |
5100 | ||
56b6aeb0 HMH |
5101 | /************************************************************************* |
5102 | * Beep subdriver | |
5103 | */ | |
5104 | ||
e0c7dfe7 | 5105 | TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ |
56b6aeb0 | 5106 | |
a5763f22 | 5107 | static int __init beep_init(struct ibm_init_struct *iibm) |
5fba344c | 5108 | { |
fe08bc4b HMH |
5109 | vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); |
5110 | ||
e0c7dfe7 | 5111 | TPACPI_ACPIHANDLE_INIT(beep); |
5fba344c | 5112 | |
fe08bc4b HMH |
5113 | vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", |
5114 | str_supported(beep_handle != NULL)); | |
5115 | ||
5fba344c HMH |
5116 | return (beep_handle)? 0 : 1; |
5117 | } | |
5118 | ||
78f81cc4 BD |
5119 | static int beep_read(char *p) |
5120 | { | |
5121 | int len = 0; | |
5122 | ||
5123 | if (!beep_handle) | |
5124 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
5125 | else { | |
5126 | len += sprintf(p + len, "status:\t\tsupported\n"); | |
5127 | len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n"); | |
5128 | } | |
5129 | ||
5130 | return len; | |
5131 | } | |
5132 | ||
5133 | static int beep_write(char *buf) | |
5134 | { | |
5135 | char *cmd; | |
5136 | int beep_cmd; | |
5137 | ||
5138 | if (!beep_handle) | |
5139 | return -ENODEV; | |
5140 | ||
5141 | while ((cmd = next_cmd(&buf))) { | |
5142 | if (sscanf(cmd, "%u", &beep_cmd) == 1 && | |
5143 | beep_cmd >= 0 && beep_cmd <= 17) { | |
5144 | /* beep_cmd set */ | |
5145 | } else | |
5146 | return -EINVAL; | |
5147 | if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0)) | |
5148 | return -EIO; | |
5149 | } | |
5150 | ||
5151 | return 0; | |
5152 | } | |
5153 | ||
a5763f22 HMH |
5154 | static struct ibm_struct beep_driver_data = { |
5155 | .name = "beep", | |
5156 | .read = beep_read, | |
5157 | .write = beep_write, | |
5158 | }; | |
5159 | ||
56b6aeb0 HMH |
5160 | /************************************************************************* |
5161 | * Thermal subdriver | |
5162 | */ | |
78f81cc4 | 5163 | |
f74a27d4 HMH |
5164 | enum thermal_access_mode { |
5165 | TPACPI_THERMAL_NONE = 0, /* No thermal support */ | |
5166 | TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ | |
5167 | TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ | |
5168 | TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ | |
5169 | TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ | |
5170 | }; | |
5171 | ||
5172 | enum { /* TPACPI_THERMAL_TPEC_* */ | |
5173 | TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ | |
5174 | TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ | |
5175 | TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ | |
5176 | }; | |
5177 | ||
5178 | #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ | |
5179 | struct ibm_thermal_sensors_struct { | |
5180 | s32 temp[TPACPI_MAX_THERMAL_SENSORS]; | |
5181 | }; | |
5182 | ||
a26f878a | 5183 | static enum thermal_access_mode thermal_read_mode; |
78f81cc4 | 5184 | |
b21a15f6 HMH |
5185 | /* idx is zero-based */ |
5186 | static int thermal_get_sensor(int idx, s32 *value) | |
5187 | { | |
5188 | int t; | |
5189 | s8 tmp; | |
5190 | char tmpi[5]; | |
5191 | ||
5192 | t = TP_EC_THERMAL_TMP0; | |
5193 | ||
5194 | switch (thermal_read_mode) { | |
5195 | #if TPACPI_MAX_THERMAL_SENSORS >= 16 | |
5196 | case TPACPI_THERMAL_TPEC_16: | |
5197 | if (idx >= 8 && idx <= 15) { | |
5198 | t = TP_EC_THERMAL_TMP8; | |
5199 | idx -= 8; | |
5200 | } | |
5201 | /* fallthrough */ | |
5202 | #endif | |
5203 | case TPACPI_THERMAL_TPEC_8: | |
5204 | if (idx <= 7) { | |
5205 | if (!acpi_ec_read(t + idx, &tmp)) | |
5206 | return -EIO; | |
5207 | *value = tmp * 1000; | |
5208 | return 0; | |
5209 | } | |
5210 | break; | |
5211 | ||
5212 | case TPACPI_THERMAL_ACPI_UPDT: | |
5213 | if (idx <= 7) { | |
5214 | snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); | |
5215 | if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) | |
5216 | return -EIO; | |
5217 | if (!acpi_evalf(ec_handle, &t, tmpi, "d")) | |
5218 | return -EIO; | |
5219 | *value = (t - 2732) * 100; | |
5220 | return 0; | |
5221 | } | |
5222 | break; | |
5223 | ||
5224 | case TPACPI_THERMAL_ACPI_TMP07: | |
5225 | if (idx <= 7) { | |
5226 | snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); | |
5227 | if (!acpi_evalf(ec_handle, &t, tmpi, "d")) | |
5228 | return -EIO; | |
5229 | if (t > 127 || t < -127) | |
5230 | t = TP_EC_THERMAL_TMP_NA; | |
5231 | *value = t * 1000; | |
5232 | return 0; | |
5233 | } | |
5234 | break; | |
5235 | ||
5236 | case TPACPI_THERMAL_NONE: | |
5237 | default: | |
5238 | return -ENOSYS; | |
5239 | } | |
5240 | ||
5241 | return -EINVAL; | |
5242 | } | |
5243 | ||
5244 | static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) | |
5245 | { | |
5246 | int res, i; | |
5247 | int n; | |
5248 | ||
5249 | n = 8; | |
5250 | i = 0; | |
5251 | ||
5252 | if (!s) | |
5253 | return -EINVAL; | |
5254 | ||
5255 | if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) | |
5256 | n = 16; | |
5257 | ||
35ff8b9f | 5258 | for (i = 0 ; i < n; i++) { |
b21a15f6 HMH |
5259 | res = thermal_get_sensor(i, &s->temp[i]); |
5260 | if (res) | |
5261 | return res; | |
5262 | } | |
5263 | ||
5264 | return n; | |
5265 | } | |
f74a27d4 | 5266 | |
2c37aa4e HMH |
5267 | /* sysfs temp##_input -------------------------------------------------- */ |
5268 | ||
5269 | static ssize_t thermal_temp_input_show(struct device *dev, | |
5270 | struct device_attribute *attr, | |
5271 | char *buf) | |
5272 | { | |
5273 | struct sensor_device_attribute *sensor_attr = | |
5274 | to_sensor_dev_attr(attr); | |
5275 | int idx = sensor_attr->index; | |
5276 | s32 value; | |
5277 | int res; | |
5278 | ||
5279 | res = thermal_get_sensor(idx, &value); | |
5280 | if (res) | |
5281 | return res; | |
5282 | if (value == TP_EC_THERMAL_TMP_NA * 1000) | |
5283 | return -ENXIO; | |
5284 | ||
5285 | return snprintf(buf, PAGE_SIZE, "%d\n", value); | |
5286 | } | |
5287 | ||
5288 | #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ | |
35ff8b9f HMH |
5289 | SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ |
5290 | thermal_temp_input_show, NULL, _idxB) | |
2c37aa4e HMH |
5291 | |
5292 | static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { | |
5293 | THERMAL_SENSOR_ATTR_TEMP(1, 0), | |
5294 | THERMAL_SENSOR_ATTR_TEMP(2, 1), | |
5295 | THERMAL_SENSOR_ATTR_TEMP(3, 2), | |
5296 | THERMAL_SENSOR_ATTR_TEMP(4, 3), | |
5297 | THERMAL_SENSOR_ATTR_TEMP(5, 4), | |
5298 | THERMAL_SENSOR_ATTR_TEMP(6, 5), | |
5299 | THERMAL_SENSOR_ATTR_TEMP(7, 6), | |
5300 | THERMAL_SENSOR_ATTR_TEMP(8, 7), | |
5301 | THERMAL_SENSOR_ATTR_TEMP(9, 8), | |
5302 | THERMAL_SENSOR_ATTR_TEMP(10, 9), | |
5303 | THERMAL_SENSOR_ATTR_TEMP(11, 10), | |
5304 | THERMAL_SENSOR_ATTR_TEMP(12, 11), | |
5305 | THERMAL_SENSOR_ATTR_TEMP(13, 12), | |
5306 | THERMAL_SENSOR_ATTR_TEMP(14, 13), | |
5307 | THERMAL_SENSOR_ATTR_TEMP(15, 14), | |
5308 | THERMAL_SENSOR_ATTR_TEMP(16, 15), | |
5309 | }; | |
5310 | ||
5311 | #define THERMAL_ATTRS(X) \ | |
5312 | &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr | |
5313 | ||
5314 | static struct attribute *thermal_temp_input_attr[] = { | |
5315 | THERMAL_ATTRS(8), | |
5316 | THERMAL_ATTRS(9), | |
5317 | THERMAL_ATTRS(10), | |
5318 | THERMAL_ATTRS(11), | |
5319 | THERMAL_ATTRS(12), | |
5320 | THERMAL_ATTRS(13), | |
5321 | THERMAL_ATTRS(14), | |
5322 | THERMAL_ATTRS(15), | |
5323 | THERMAL_ATTRS(0), | |
5324 | THERMAL_ATTRS(1), | |
5325 | THERMAL_ATTRS(2), | |
5326 | THERMAL_ATTRS(3), | |
5327 | THERMAL_ATTRS(4), | |
5328 | THERMAL_ATTRS(5), | |
5329 | THERMAL_ATTRS(6), | |
5330 | THERMAL_ATTRS(7), | |
5331 | NULL | |
5332 | }; | |
5333 | ||
5334 | static const struct attribute_group thermal_temp_input16_group = { | |
5335 | .attrs = thermal_temp_input_attr | |
5336 | }; | |
5337 | ||
5338 | static const struct attribute_group thermal_temp_input8_group = { | |
5339 | .attrs = &thermal_temp_input_attr[8] | |
5340 | }; | |
5341 | ||
5342 | #undef THERMAL_SENSOR_ATTR_TEMP | |
5343 | #undef THERMAL_ATTRS | |
5344 | ||
5345 | /* --------------------------------------------------------------------- */ | |
5346 | ||
a5763f22 | 5347 | static int __init thermal_init(struct ibm_init_struct *iibm) |
78f81cc4 | 5348 | { |
60eb0b35 HMH |
5349 | u8 t, ta1, ta2; |
5350 | int i; | |
5fba344c | 5351 | int acpi_tmp7; |
2c37aa4e | 5352 | int res; |
5fba344c | 5353 | |
fe08bc4b HMH |
5354 | vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); |
5355 | ||
5fba344c | 5356 | acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); |
60eb0b35 | 5357 | |
3d6f99ca | 5358 | if (thinkpad_id.ec_model) { |
60eb0b35 HMH |
5359 | /* |
5360 | * Direct EC access mode: sensors at registers | |
5361 | * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for | |
5362 | * non-implemented, thermal sensors return 0x80 when | |
5363 | * not available | |
5364 | */ | |
78f81cc4 | 5365 | |
60eb0b35 HMH |
5366 | ta1 = ta2 = 0; |
5367 | for (i = 0; i < 8; i++) { | |
04cc862c | 5368 | if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { |
60eb0b35 HMH |
5369 | ta1 |= t; |
5370 | } else { | |
5371 | ta1 = 0; | |
5372 | break; | |
5373 | } | |
04cc862c | 5374 | if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { |
60eb0b35 HMH |
5375 | ta2 |= t; |
5376 | } else { | |
5377 | ta1 = 0; | |
5378 | break; | |
5379 | } | |
5380 | } | |
5381 | if (ta1 == 0) { | |
5382 | /* This is sheer paranoia, but we handle it anyway */ | |
5383 | if (acpi_tmp7) { | |
e0c7dfe7 | 5384 | printk(TPACPI_ERR |
60eb0b35 | 5385 | "ThinkPad ACPI EC access misbehaving, " |
35ff8b9f HMH |
5386 | "falling back to ACPI TMPx access " |
5387 | "mode\n"); | |
efa27145 | 5388 | thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; |
60eb0b35 | 5389 | } else { |
e0c7dfe7 | 5390 | printk(TPACPI_ERR |
60eb0b35 HMH |
5391 | "ThinkPad ACPI EC access misbehaving, " |
5392 | "disabling thermal sensors access\n"); | |
efa27145 | 5393 | thermal_read_mode = TPACPI_THERMAL_NONE; |
60eb0b35 HMH |
5394 | } |
5395 | } else { | |
5396 | thermal_read_mode = | |
5397 | (ta2 != 0) ? | |
efa27145 | 5398 | TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; |
60eb0b35 HMH |
5399 | } |
5400 | } else if (acpi_tmp7) { | |
a26f878a HMH |
5401 | if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { |
5402 | /* 600e/x, 770e, 770x */ | |
efa27145 | 5403 | thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT; |
a26f878a HMH |
5404 | } else { |
5405 | /* Standard ACPI TMPx access, max 8 sensors */ | |
efa27145 | 5406 | thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; |
a26f878a HMH |
5407 | } |
5408 | } else { | |
5409 | /* temperatures not supported on 570, G4x, R30, R31, R32 */ | |
efa27145 | 5410 | thermal_read_mode = TPACPI_THERMAL_NONE; |
a26f878a | 5411 | } |
78f81cc4 | 5412 | |
fe08bc4b HMH |
5413 | vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", |
5414 | str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), | |
5415 | thermal_read_mode); | |
5416 | ||
35ff8b9f | 5417 | switch (thermal_read_mode) { |
2c37aa4e | 5418 | case TPACPI_THERMAL_TPEC_16: |
7fd40029 | 5419 | res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, |
2c37aa4e HMH |
5420 | &thermal_temp_input16_group); |
5421 | if (res) | |
5422 | return res; | |
5423 | break; | |
5424 | case TPACPI_THERMAL_TPEC_8: | |
5425 | case TPACPI_THERMAL_ACPI_TMP07: | |
5426 | case TPACPI_THERMAL_ACPI_UPDT: | |
7fd40029 | 5427 | res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, |
2c37aa4e HMH |
5428 | &thermal_temp_input8_group); |
5429 | if (res) | |
5430 | return res; | |
5431 | break; | |
5432 | case TPACPI_THERMAL_NONE: | |
5433 | default: | |
5434 | return 1; | |
5435 | } | |
5436 | ||
5437 | return 0; | |
5438 | } | |
5439 | ||
5440 | static void thermal_exit(void) | |
5441 | { | |
35ff8b9f | 5442 | switch (thermal_read_mode) { |
2c37aa4e | 5443 | case TPACPI_THERMAL_TPEC_16: |
7fd40029 | 5444 | sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, |
2c37aa4e HMH |
5445 | &thermal_temp_input16_group); |
5446 | break; | |
5447 | case TPACPI_THERMAL_TPEC_8: | |
5448 | case TPACPI_THERMAL_ACPI_TMP07: | |
5449 | case TPACPI_THERMAL_ACPI_UPDT: | |
7fd40029 | 5450 | sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, |
2c37aa4e HMH |
5451 | &thermal_temp_input16_group); |
5452 | break; | |
5453 | case TPACPI_THERMAL_NONE: | |
5454 | default: | |
5455 | break; | |
5456 | } | |
78f81cc4 BD |
5457 | } |
5458 | ||
a26f878a HMH |
5459 | static int thermal_read(char *p) |
5460 | { | |
5461 | int len = 0; | |
5462 | int n, i; | |
5463 | struct ibm_thermal_sensors_struct t; | |
5464 | ||
5465 | n = thermal_get_sensors(&t); | |
5466 | if (unlikely(n < 0)) | |
5467 | return n; | |
5468 | ||
5469 | len += sprintf(p + len, "temperatures:\t"); | |
5470 | ||
5471 | if (n > 0) { | |
5472 | for (i = 0; i < (n - 1); i++) | |
5473 | len += sprintf(p + len, "%d ", t.temp[i] / 1000); | |
5474 | len += sprintf(p + len, "%d\n", t.temp[i] / 1000); | |
5475 | } else | |
5476 | len += sprintf(p + len, "not supported\n"); | |
78f81cc4 BD |
5477 | |
5478 | return len; | |
5479 | } | |
5480 | ||
a5763f22 HMH |
5481 | static struct ibm_struct thermal_driver_data = { |
5482 | .name = "thermal", | |
5483 | .read = thermal_read, | |
2c37aa4e | 5484 | .exit = thermal_exit, |
a5763f22 HMH |
5485 | }; |
5486 | ||
56b6aeb0 HMH |
5487 | /************************************************************************* |
5488 | * EC Dump subdriver | |
5489 | */ | |
5490 | ||
78f81cc4 BD |
5491 | static u8 ecdump_regs[256]; |
5492 | ||
5493 | static int ecdump_read(char *p) | |
5494 | { | |
5495 | int len = 0; | |
5496 | int i, j; | |
5497 | u8 v; | |
5498 | ||
5499 | len += sprintf(p + len, "EC " | |
5500 | " +00 +01 +02 +03 +04 +05 +06 +07" | |
5501 | " +08 +09 +0a +0b +0c +0d +0e +0f\n"); | |
5502 | for (i = 0; i < 256; i += 16) { | |
5503 | len += sprintf(p + len, "EC 0x%02x:", i); | |
5504 | for (j = 0; j < 16; j++) { | |
5505 | if (!acpi_ec_read(i + j, &v)) | |
5506 | break; | |
5507 | if (v != ecdump_regs[i + j]) | |
5508 | len += sprintf(p + len, " *%02x", v); | |
5509 | else | |
5510 | len += sprintf(p + len, " %02x", v); | |
5511 | ecdump_regs[i + j] = v; | |
5512 | } | |
5513 | len += sprintf(p + len, "\n"); | |
5514 | if (j != 16) | |
5515 | break; | |
5516 | } | |
5517 | ||
5518 | /* These are way too dangerous to advertise openly... */ | |
5519 | #if 0 | |
5520 | len += sprintf(p + len, "commands:\t0x<offset> 0x<value>" | |
5521 | " (<offset> is 00-ff, <value> is 00-ff)\n"); | |
5522 | len += sprintf(p + len, "commands:\t0x<offset> <value> " | |
5523 | " (<offset> is 00-ff, <value> is 0-255)\n"); | |
5524 | #endif | |
5525 | return len; | |
5526 | } | |
5527 | ||
5528 | static int ecdump_write(char *buf) | |
5529 | { | |
5530 | char *cmd; | |
5531 | int i, v; | |
5532 | ||
5533 | while ((cmd = next_cmd(&buf))) { | |
5534 | if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) { | |
5535 | /* i and v set */ | |
5536 | } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) { | |
5537 | /* i and v set */ | |
5538 | } else | |
5539 | return -EINVAL; | |
5540 | if (i >= 0 && i < 256 && v >= 0 && v < 256) { | |
5541 | if (!acpi_ec_write(i, v)) | |
1da177e4 LT |
5542 | return -EIO; |
5543 | } else | |
5544 | return -EINVAL; | |
5545 | } | |
5546 | ||
5547 | return 0; | |
78f81cc4 BD |
5548 | } |
5549 | ||
a5763f22 HMH |
5550 | static struct ibm_struct ecdump_driver_data = { |
5551 | .name = "ecdump", | |
5552 | .read = ecdump_read, | |
5553 | .write = ecdump_write, | |
92641177 | 5554 | .flags.experimental = 1, |
a5763f22 HMH |
5555 | }; |
5556 | ||
56b6aeb0 HMH |
5557 | /************************************************************************* |
5558 | * Backlight/brightness subdriver | |
5559 | */ | |
5560 | ||
f74a27d4 HMH |
5561 | #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" |
5562 | ||
0e501834 HMH |
5563 | /* |
5564 | * ThinkPads can read brightness from two places: EC HBRV (0x31), or | |
5565 | * CMOS NVRAM byte 0x5E, bits 0-3. | |
5566 | * | |
5567 | * EC HBRV (0x31) has the following layout | |
5568 | * Bit 7: unknown function | |
5569 | * Bit 6: unknown function | |
5570 | * Bit 5: Z: honour scale changes, NZ: ignore scale changes | |
5571 | * Bit 4: must be set to zero to avoid problems | |
5572 | * Bit 3-0: backlight brightness level | |
5573 | * | |
5574 | * brightness_get_raw returns status data in the HBRV layout | |
5575 | */ | |
5576 | ||
e11aecf1 HMH |
5577 | enum { |
5578 | TP_EC_BACKLIGHT = 0x31, | |
5579 | ||
5580 | /* TP_EC_BACKLIGHT bitmasks */ | |
5581 | TP_EC_BACKLIGHT_LVLMSK = 0x1F, | |
5582 | TP_EC_BACKLIGHT_CMDMSK = 0xE0, | |
5583 | TP_EC_BACKLIGHT_MAPSW = 0x20, | |
5584 | }; | |
5585 | ||
0e501834 HMH |
5586 | enum tpacpi_brightness_access_mode { |
5587 | TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */ | |
5588 | TPACPI_BRGHT_MODE_EC, /* EC control */ | |
5589 | TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */ | |
5590 | TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */ | |
5591 | TPACPI_BRGHT_MODE_MAX | |
5592 | }; | |
5593 | ||
94954cc6 | 5594 | static struct backlight_device *ibm_backlight_device; |
0e501834 HMH |
5595 | |
5596 | static enum tpacpi_brightness_access_mode brightness_mode = | |
5597 | TPACPI_BRGHT_MODE_MAX; | |
5598 | ||
f74a27d4 HMH |
5599 | static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ |
5600 | ||
b21a15f6 | 5601 | static struct mutex brightness_mutex; |
56b6aeb0 | 5602 | |
0e501834 HMH |
5603 | /* NVRAM brightness access, |
5604 | * call with brightness_mutex held! */ | |
5605 | static unsigned int tpacpi_brightness_nvram_get(void) | |
b21a15f6 | 5606 | { |
0e501834 | 5607 | u8 lnvram; |
b21a15f6 | 5608 | |
0e501834 HMH |
5609 | lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) |
5610 | & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) | |
5611 | >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; | |
5612 | lnvram &= (tp_features.bright_16levels) ? 0x0f : 0x07; | |
5613 | ||
5614 | return lnvram; | |
5615 | } | |
5616 | ||
5617 | static void tpacpi_brightness_checkpoint_nvram(void) | |
5618 | { | |
5619 | u8 lec = 0; | |
5620 | u8 b_nvram; | |
5621 | ||
5622 | if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM) | |
5623 | return; | |
5624 | ||
5625 | vdbg_printk(TPACPI_DBG_BRGHT, | |
5626 | "trying to checkpoint backlight level to NVRAM...\n"); | |
5627 | ||
5628 | if (mutex_lock_killable(&brightness_mutex) < 0) | |
5629 | return; | |
5630 | ||
5631 | if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) | |
5632 | goto unlock; | |
5633 | lec &= TP_EC_BACKLIGHT_LVLMSK; | |
5634 | b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); | |
5635 | ||
5636 | if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) | |
5637 | >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) { | |
5638 | /* NVRAM needs update */ | |
5639 | b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS << | |
5640 | TP_NVRAM_POS_LEVEL_BRIGHTNESS); | |
5641 | b_nvram |= lec; | |
5642 | nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS); | |
5643 | dbg_printk(TPACPI_DBG_BRGHT, | |
5644 | "updated NVRAM backlight level to %u (0x%02x)\n", | |
5645 | (unsigned int) lec, (unsigned int) b_nvram); | |
5646 | } else | |
5647 | vdbg_printk(TPACPI_DBG_BRGHT, | |
5648 | "NVRAM backlight level already is %u (0x%02x)\n", | |
5649 | (unsigned int) lec, (unsigned int) b_nvram); | |
5650 | ||
5651 | unlock: | |
5652 | mutex_unlock(&brightness_mutex); | |
5653 | } | |
5654 | ||
5655 | ||
5656 | /* call with brightness_mutex held! */ | |
5657 | static int tpacpi_brightness_get_raw(int *status) | |
5658 | { | |
5659 | u8 lec = 0; | |
5660 | ||
5661 | switch (brightness_mode) { | |
5662 | case TPACPI_BRGHT_MODE_UCMS_STEP: | |
5663 | *status = tpacpi_brightness_nvram_get(); | |
5664 | return 0; | |
5665 | case TPACPI_BRGHT_MODE_EC: | |
5666 | case TPACPI_BRGHT_MODE_ECNVRAM: | |
5667 | if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) | |
2d5e94d7 | 5668 | return -EIO; |
0e501834 HMH |
5669 | *status = lec; |
5670 | return 0; | |
5671 | default: | |
5672 | return -ENXIO; | |
b21a15f6 | 5673 | } |
0e501834 HMH |
5674 | } |
5675 | ||
5676 | /* call with brightness_mutex held! */ | |
5677 | /* do NOT call with illegal backlight level value */ | |
5678 | static int tpacpi_brightness_set_ec(unsigned int value) | |
5679 | { | |
5680 | u8 lec = 0; | |
5681 | ||
5682 | if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) | |
5683 | return -EIO; | |
5684 | ||
5685 | if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT, | |
5686 | (lec & TP_EC_BACKLIGHT_CMDMSK) | | |
5687 | (value & TP_EC_BACKLIGHT_LVLMSK)))) | |
5688 | return -EIO; | |
5689 | ||
5690 | return 0; | |
5691 | } | |
5692 | ||
5693 | /* call with brightness_mutex held! */ | |
5694 | static int tpacpi_brightness_set_ucmsstep(unsigned int value) | |
5695 | { | |
5696 | int cmos_cmd, inc; | |
5697 | unsigned int current_value, i; | |
5698 | ||
5699 | current_value = tpacpi_brightness_nvram_get(); | |
5700 | ||
5701 | if (value == current_value) | |
5702 | return 0; | |
5703 | ||
5704 | cmos_cmd = (value > current_value) ? | |
5705 | TP_CMOS_BRIGHTNESS_UP : | |
5706 | TP_CMOS_BRIGHTNESS_DOWN; | |
5707 | inc = (value > current_value) ? 1 : -1; | |
5708 | ||
5709 | for (i = current_value; i != value; i += inc) | |
5710 | if (issue_thinkpad_cmos_command(cmos_cmd)) | |
5711 | return -EIO; | |
b21a15f6 | 5712 | |
e11aecf1 | 5713 | return 0; |
b21a15f6 HMH |
5714 | } |
5715 | ||
5716 | /* May return EINTR which can always be mapped to ERESTARTSYS */ | |
0e501834 | 5717 | static int brightness_set(unsigned int value) |
b21a15f6 | 5718 | { |
0e501834 | 5719 | int res; |
b21a15f6 | 5720 | |
e11aecf1 HMH |
5721 | if (value > ((tp_features.bright_16levels)? 15 : 7) || |
5722 | value < 0) | |
b21a15f6 HMH |
5723 | return -EINVAL; |
5724 | ||
0e501834 HMH |
5725 | vdbg_printk(TPACPI_DBG_BRGHT, |
5726 | "set backlight level to %d\n", value); | |
5727 | ||
7646ea88 | 5728 | res = mutex_lock_killable(&brightness_mutex); |
b21a15f6 HMH |
5729 | if (res < 0) |
5730 | return res; | |
5731 | ||
0e501834 HMH |
5732 | switch (brightness_mode) { |
5733 | case TPACPI_BRGHT_MODE_EC: | |
5734 | case TPACPI_BRGHT_MODE_ECNVRAM: | |
5735 | res = tpacpi_brightness_set_ec(value); | |
5736 | break; | |
5737 | case TPACPI_BRGHT_MODE_UCMS_STEP: | |
5738 | res = tpacpi_brightness_set_ucmsstep(value); | |
5739 | break; | |
5740 | default: | |
5741 | res = -ENXIO; | |
b21a15f6 HMH |
5742 | } |
5743 | ||
b21a15f6 HMH |
5744 | mutex_unlock(&brightness_mutex); |
5745 | return res; | |
5746 | } | |
5747 | ||
5748 | /* sysfs backlight class ----------------------------------------------- */ | |
5749 | ||
5750 | static int brightness_update_status(struct backlight_device *bd) | |
5751 | { | |
0e501834 | 5752 | unsigned int level = |
b21a15f6 HMH |
5753 | (bd->props.fb_blank == FB_BLANK_UNBLANK && |
5754 | bd->props.power == FB_BLANK_UNBLANK) ? | |
0e501834 HMH |
5755 | bd->props.brightness : 0; |
5756 | ||
5757 | dbg_printk(TPACPI_DBG_BRGHT, | |
5758 | "backlight: attempt to set level to %d\n", | |
5759 | level); | |
5760 | ||
5761 | /* it is the backlight class's job (caller) to handle | |
5762 | * EINTR and other errors properly */ | |
5763 | return brightness_set(level); | |
b21a15f6 HMH |
5764 | } |
5765 | ||
e11aecf1 | 5766 | static int brightness_get(struct backlight_device *bd) |
a3f104c0 | 5767 | { |
e11aecf1 | 5768 | int status, res; |
a3f104c0 | 5769 | |
0e501834 | 5770 | res = mutex_lock_killable(&brightness_mutex); |
e11aecf1 | 5771 | if (res < 0) |
0e501834 HMH |
5772 | return 0; |
5773 | ||
5774 | res = tpacpi_brightness_get_raw(&status); | |
5775 | ||
5776 | mutex_unlock(&brightness_mutex); | |
5777 | ||
5778 | if (res < 0) | |
5779 | return 0; | |
e11e211a | 5780 | |
e11aecf1 | 5781 | return status & TP_EC_BACKLIGHT_LVLMSK; |
e11e211a HMH |
5782 | } |
5783 | ||
b21a15f6 | 5784 | static struct backlight_ops ibm_backlight_data = { |
35ff8b9f HMH |
5785 | .get_brightness = brightness_get, |
5786 | .update_status = brightness_update_status, | |
56b6aeb0 | 5787 | }; |
e11e211a | 5788 | |
b21a15f6 | 5789 | /* --------------------------------------------------------------------- */ |
e11e211a | 5790 | |
a5763f22 | 5791 | static int __init brightness_init(struct ibm_init_struct *iibm) |
56b6aeb0 HMH |
5792 | { |
5793 | int b; | |
5794 | ||
fe08bc4b HMH |
5795 | vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); |
5796 | ||
f432255e HMH |
5797 | mutex_init(&brightness_mutex); |
5798 | ||
b5972796 HMH |
5799 | /* |
5800 | * We always attempt to detect acpi support, so as to switch | |
5801 | * Lenovo Vista BIOS to ACPI brightness mode even if we are not | |
5802 | * going to publish a backlight interface | |
5803 | */ | |
5804 | b = tpacpi_check_std_acpi_brightness_support(); | |
5805 | if (b > 0) { | |
2dba1b5d TR |
5806 | |
5807 | if (acpi_video_backlight_support()) { | |
5808 | if (brightness_enable > 1) { | |
5809 | printk(TPACPI_NOTICE | |
5810 | "Standard ACPI backlight interface " | |
5811 | "available, not loading native one.\n"); | |
5812 | return 1; | |
5813 | } else if (brightness_enable == 1) { | |
5814 | printk(TPACPI_NOTICE | |
5815 | "Backlight control force enabled, even if standard " | |
5816 | "ACPI backlight interface is available\n"); | |
5817 | } | |
5818 | } else { | |
5819 | if (brightness_enable > 1) { | |
5820 | printk(TPACPI_NOTICE | |
5821 | "Standard ACPI backlight interface not " | |
5822 | "available, thinkpad_acpi native " | |
5823 | "brightness control enabled\n"); | |
5824 | } | |
e11e211a | 5825 | } |
87cc537a HMH |
5826 | } |
5827 | ||
b5972796 | 5828 | if (!brightness_enable) { |
0e501834 | 5829 | dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, |
b5972796 HMH |
5830 | "brightness support disabled by " |
5831 | "module parameter\n"); | |
5832 | return 1; | |
5833 | } | |
5834 | ||
5835 | if (b > 16) { | |
5836 | printk(TPACPI_ERR | |
5837 | "Unsupported brightness interface, " | |
5838 | "please contact %s\n", TPACPI_MAIL); | |
5839 | return 1; | |
5840 | } | |
5841 | if (b == 16) | |
5842 | tp_features.bright_16levels = 1; | |
5843 | ||
0e501834 HMH |
5844 | /* |
5845 | * Check for module parameter bogosity, note that we | |
5846 | * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be | |
5847 | * able to detect "unspecified" | |
5848 | */ | |
5849 | if (brightness_mode > TPACPI_BRGHT_MODE_MAX) | |
5850 | return -EINVAL; | |
24d3b774 | 5851 | |
0e501834 HMH |
5852 | /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */ |
5853 | if (brightness_mode == TPACPI_BRGHT_MODE_AUTO || | |
5854 | brightness_mode == TPACPI_BRGHT_MODE_MAX) { | |
5855 | if (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) { | |
5856 | /* | |
5857 | * IBM models that define HBRV probably have | |
5858 | * EC-based backlight level control | |
5859 | */ | |
5860 | if (acpi_evalf(ec_handle, NULL, "HBRV", "qd")) | |
5861 | /* T40-T43, R50-R52, R50e, R51e, X31-X41 */ | |
5862 | brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM; | |
5863 | else | |
5864 | /* all other IBM ThinkPads */ | |
5865 | brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP; | |
5866 | } else | |
5867 | /* All Lenovo ThinkPads */ | |
5868 | brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP; | |
24d3b774 | 5869 | |
0e501834 HMH |
5870 | dbg_printk(TPACPI_DBG_BRGHT, |
5871 | "selected brightness_mode=%d\n", | |
5872 | brightness_mode); | |
5873 | } | |
24d3b774 | 5874 | |
0e501834 | 5875 | if (tpacpi_brightness_get_raw(&b) < 0) |
24d3b774 | 5876 | return 1; |
56b6aeb0 | 5877 | |
a3f104c0 | 5878 | if (tp_features.bright_16levels) |
35ff8b9f HMH |
5879 | printk(TPACPI_INFO |
5880 | "detected a 16-level brightness capable ThinkPad\n"); | |
a3f104c0 | 5881 | |
7d5a015e HMH |
5882 | ibm_backlight_device = backlight_device_register( |
5883 | TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL, | |
5884 | &ibm_backlight_data); | |
56b6aeb0 | 5885 | if (IS_ERR(ibm_backlight_device)) { |
e0c7dfe7 | 5886 | printk(TPACPI_ERR "Could not register backlight device\n"); |
56b6aeb0 HMH |
5887 | return PTR_ERR(ibm_backlight_device); |
5888 | } | |
0e501834 HMH |
5889 | vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, |
5890 | "brightness is supported\n"); | |
56b6aeb0 | 5891 | |
a3f104c0 HMH |
5892 | ibm_backlight_device->props.max_brightness = |
5893 | (tp_features.bright_16levels)? 15 : 7; | |
e11aecf1 | 5894 | ibm_backlight_device->props.brightness = b & TP_EC_BACKLIGHT_LVLMSK; |
56b6aeb0 HMH |
5895 | backlight_update_status(ibm_backlight_device); |
5896 | ||
5897 | return 0; | |
5898 | } | |
5899 | ||
0e501834 HMH |
5900 | static void brightness_suspend(pm_message_t state) |
5901 | { | |
5902 | tpacpi_brightness_checkpoint_nvram(); | |
5903 | } | |
5904 | ||
5905 | static void brightness_shutdown(void) | |
5906 | { | |
5907 | tpacpi_brightness_checkpoint_nvram(); | |
5908 | } | |
5909 | ||
56b6aeb0 HMH |
5910 | static void brightness_exit(void) |
5911 | { | |
5912 | if (ibm_backlight_device) { | |
0e501834 | 5913 | vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT, |
fe08bc4b | 5914 | "calling backlight_device_unregister()\n"); |
56b6aeb0 | 5915 | backlight_device_unregister(ibm_backlight_device); |
56b6aeb0 | 5916 | } |
0e501834 HMH |
5917 | |
5918 | tpacpi_brightness_checkpoint_nvram(); | |
56b6aeb0 HMH |
5919 | } |
5920 | ||
56b6aeb0 HMH |
5921 | static int brightness_read(char *p) |
5922 | { | |
5923 | int len = 0; | |
5924 | int level; | |
5925 | ||
35ff8b9f HMH |
5926 | level = brightness_get(NULL); |
5927 | if (level < 0) { | |
56b6aeb0 HMH |
5928 | len += sprintf(p + len, "level:\t\tunreadable\n"); |
5929 | } else { | |
a3f104c0 | 5930 | len += sprintf(p + len, "level:\t\t%d\n", level); |
56b6aeb0 HMH |
5931 | len += sprintf(p + len, "commands:\tup, down\n"); |
5932 | len += sprintf(p + len, "commands:\tlevel <level>" | |
a3f104c0 HMH |
5933 | " (<level> is 0-%d)\n", |
5934 | (tp_features.bright_16levels) ? 15 : 7); | |
56b6aeb0 HMH |
5935 | } |
5936 | ||
5937 | return len; | |
5938 | } | |
5939 | ||
8acb0250 HM |
5940 | static int brightness_write(char *buf) |
5941 | { | |
5942 | int level; | |
4273af8d | 5943 | int rc; |
1da177e4 | 5944 | char *cmd; |
a3f104c0 | 5945 | int max_level = (tp_features.bright_16levels) ? 15 : 7; |
1da177e4 | 5946 | |
4273af8d HMH |
5947 | level = brightness_get(NULL); |
5948 | if (level < 0) | |
5949 | return level; | |
78f81cc4 | 5950 | |
4273af8d | 5951 | while ((cmd = next_cmd(&buf))) { |
78f81cc4 | 5952 | if (strlencmp(cmd, "up") == 0) { |
4273af8d HMH |
5953 | if (level < max_level) |
5954 | level++; | |
78f81cc4 | 5955 | } else if (strlencmp(cmd, "down") == 0) { |
4273af8d HMH |
5956 | if (level > 0) |
5957 | level--; | |
5958 | } else if (sscanf(cmd, "level %d", &level) == 1 && | |
5959 | level >= 0 && level <= max_level) { | |
5960 | /* new level set */ | |
78f81cc4 BD |
5961 | } else |
5962 | return -EINVAL; | |
78f81cc4 BD |
5963 | } |
5964 | ||
0e501834 HMH |
5965 | tpacpi_disclose_usertask("procfs brightness", |
5966 | "set level to %d\n", level); | |
5967 | ||
4273af8d HMH |
5968 | /* |
5969 | * Now we know what the final level should be, so we try to set it. | |
5970 | * Doing it this way makes the syscall restartable in case of EINTR | |
5971 | */ | |
5972 | rc = brightness_set(level); | |
5973 | return (rc == -EINTR)? ERESTARTSYS : rc; | |
78f81cc4 BD |
5974 | } |
5975 | ||
a5763f22 HMH |
5976 | static struct ibm_struct brightness_driver_data = { |
5977 | .name = "brightness", | |
5978 | .read = brightness_read, | |
5979 | .write = brightness_write, | |
5980 | .exit = brightness_exit, | |
0e501834 HMH |
5981 | .suspend = brightness_suspend, |
5982 | .shutdown = brightness_shutdown, | |
a5763f22 HMH |
5983 | }; |
5984 | ||
56b6aeb0 HMH |
5985 | /************************************************************************* |
5986 | * Volume subdriver | |
5987 | */ | |
fb87a811 | 5988 | |
f74a27d4 HMH |
5989 | static int volume_offset = 0x30; |
5990 | ||
78f81cc4 BD |
5991 | static int volume_read(char *p) |
5992 | { | |
5993 | int len = 0; | |
5994 | u8 level; | |
5995 | ||
5996 | if (!acpi_ec_read(volume_offset, &level)) { | |
5997 | len += sprintf(p + len, "level:\t\tunreadable\n"); | |
5998 | } else { | |
5999 | len += sprintf(p + len, "level:\t\t%d\n", level & 0xf); | |
6000 | len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6)); | |
6001 | len += sprintf(p + len, "commands:\tup, down, mute\n"); | |
6002 | len += sprintf(p + len, "commands:\tlevel <level>" | |
6003 | " (<level> is 0-15)\n"); | |
6004 | } | |
6005 | ||
6006 | return len; | |
6007 | } | |
6008 | ||
78f81cc4 BD |
6009 | static int volume_write(char *buf) |
6010 | { | |
6011 | int cmos_cmd, inc, i; | |
6012 | u8 level, mute; | |
6013 | int new_level, new_mute; | |
6014 | char *cmd; | |
6015 | ||
6016 | while ((cmd = next_cmd(&buf))) { | |
6017 | if (!acpi_ec_read(volume_offset, &level)) | |
6018 | return -EIO; | |
6019 | new_mute = mute = level & 0x40; | |
6020 | new_level = level = level & 0xf; | |
6021 | ||
6022 | if (strlencmp(cmd, "up") == 0) { | |
6023 | if (mute) | |
6024 | new_mute = 0; | |
6025 | else | |
6026 | new_level = level == 15 ? 15 : level + 1; | |
6027 | } else if (strlencmp(cmd, "down") == 0) { | |
6028 | if (mute) | |
6029 | new_mute = 0; | |
6030 | else | |
6031 | new_level = level == 0 ? 0 : level - 1; | |
6032 | } else if (sscanf(cmd, "level %d", &new_level) == 1 && | |
6033 | new_level >= 0 && new_level <= 15) { | |
6034 | /* new_level set */ | |
6035 | } else if (strlencmp(cmd, "mute") == 0) { | |
6036 | new_mute = 0x40; | |
1da177e4 LT |
6037 | } else |
6038 | return -EINVAL; | |
6039 | ||
35ff8b9f HMH |
6040 | if (new_level != level) { |
6041 | /* mute doesn't change */ | |
6042 | ||
6043 | cmos_cmd = (new_level > level) ? | |
6044 | TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN; | |
78f81cc4 BD |
6045 | inc = new_level > level ? 1 : -1; |
6046 | ||
c9bea99c | 6047 | if (mute && (issue_thinkpad_cmos_command(cmos_cmd) || |
78f81cc4 BD |
6048 | !acpi_ec_write(volume_offset, level))) |
6049 | return -EIO; | |
6050 | ||
6051 | for (i = level; i != new_level; i += inc) | |
c9bea99c | 6052 | if (issue_thinkpad_cmos_command(cmos_cmd) || |
78f81cc4 BD |
6053 | !acpi_ec_write(volume_offset, i + inc)) |
6054 | return -EIO; | |
6055 | ||
35ff8b9f HMH |
6056 | if (mute && |
6057 | (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) || | |
6058 | !acpi_ec_write(volume_offset, new_level + mute))) { | |
78f81cc4 | 6059 | return -EIO; |
35ff8b9f | 6060 | } |
78f81cc4 BD |
6061 | } |
6062 | ||
35ff8b9f HMH |
6063 | if (new_mute != mute) { |
6064 | /* level doesn't change */ | |
6065 | ||
6066 | cmos_cmd = (new_mute) ? | |
6067 | TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP; | |
78f81cc4 | 6068 | |
c9bea99c | 6069 | if (issue_thinkpad_cmos_command(cmos_cmd) || |
78f81cc4 BD |
6070 | !acpi_ec_write(volume_offset, level + new_mute)) |
6071 | return -EIO; | |
6072 | } | |
6073 | } | |
6074 | ||
6075 | return 0; | |
6076 | } | |
6077 | ||
a5763f22 HMH |
6078 | static struct ibm_struct volume_driver_data = { |
6079 | .name = "volume", | |
6080 | .read = volume_read, | |
6081 | .write = volume_write, | |
6082 | }; | |
56b6aeb0 HMH |
6083 | |
6084 | /************************************************************************* | |
6085 | * Fan subdriver | |
6086 | */ | |
6087 | ||
6088 | /* | |
6089 | * FAN ACCESS MODES | |
6090 | * | |
efa27145 | 6091 | * TPACPI_FAN_RD_ACPI_GFAN: |
56b6aeb0 HMH |
6092 | * ACPI GFAN method: returns fan level |
6093 | * | |
efa27145 | 6094 | * see TPACPI_FAN_WR_ACPI_SFAN |
f51d1a39 | 6095 | * EC 0x2f (HFSP) not available if GFAN exists |
56b6aeb0 | 6096 | * |
efa27145 | 6097 | * TPACPI_FAN_WR_ACPI_SFAN: |
56b6aeb0 HMH |
6098 | * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) |
6099 | * | |
f51d1a39 HMH |
6100 | * EC 0x2f (HFSP) might be available *for reading*, but do not use |
6101 | * it for writing. | |
56b6aeb0 | 6102 | * |
efa27145 | 6103 | * TPACPI_FAN_WR_TPEC: |
f51d1a39 HMH |
6104 | * ThinkPad EC register 0x2f (HFSP): fan control loop mode |
6105 | * Supported on almost all ThinkPads | |
56b6aeb0 HMH |
6106 | * |
6107 | * Fan speed changes of any sort (including those caused by the | |
6108 | * disengaged mode) are usually done slowly by the firmware as the | |
6109 | * maximum ammount of fan duty cycle change per second seems to be | |
6110 | * limited. | |
6111 | * | |
6112 | * Reading is not available if GFAN exists. | |
6113 | * Writing is not available if SFAN exists. | |
6114 | * | |
6115 | * Bits | |
6116 | * 7 automatic mode engaged; | |
6117 | * (default operation mode of the ThinkPad) | |
6118 | * fan level is ignored in this mode. | |
f51d1a39 | 6119 | * 6 full speed mode (takes precedence over bit 7); |
56b6aeb0 | 6120 | * not available on all thinkpads. May disable |
f51d1a39 HMH |
6121 | * the tachometer while the fan controller ramps up |
6122 | * the speed (which can take up to a few *minutes*). | |
6123 | * Speeds up fan to 100% duty-cycle, which is far above | |
6124 | * the standard RPM levels. It is not impossible that | |
6125 | * it could cause hardware damage. | |
56b6aeb0 HMH |
6126 | * 5-3 unused in some models. Extra bits for fan level |
6127 | * in others, but still useless as all values above | |
6128 | * 7 map to the same speed as level 7 in these models. | |
6129 | * 2-0 fan level (0..7 usually) | |
6130 | * 0x00 = stop | |
6131 | * 0x07 = max (set when temperatures critical) | |
6132 | * Some ThinkPads may have other levels, see | |
efa27145 | 6133 | * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) |
56b6aeb0 HMH |
6134 | * |
6135 | * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at | |
6136 | * boot. Apparently the EC does not intialize it, so unless ACPI DSDT | |
6137 | * does so, its initial value is meaningless (0x07). | |
6138 | * | |
6139 | * For firmware bugs, refer to: | |
6140 | * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues | |
6141 | * | |
6142 | * ---- | |
6143 | * | |
6144 | * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): | |
6145 | * Main fan tachometer reading (in RPM) | |
6146 | * | |
6147 | * This register is present on all ThinkPads with a new-style EC, and | |
6148 | * it is known not to be present on the A21m/e, and T22, as there is | |
6149 | * something else in offset 0x84 according to the ACPI DSDT. Other | |
6150 | * ThinkPads from this same time period (and earlier) probably lack the | |
6151 | * tachometer as well. | |
6152 | * | |
877d0310 | 6153 | * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware |
56b6aeb0 HMH |
6154 | * was never fixed by IBM to report the EC firmware version string |
6155 | * probably support the tachometer (like the early X models), so | |
6156 | * detecting it is quite hard. We need more data to know for sure. | |
6157 | * | |
6158 | * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings | |
6159 | * might result. | |
6160 | * | |
f51d1a39 HMH |
6161 | * FIRMWARE BUG: may go stale while the EC is switching to full speed |
6162 | * mode. | |
56b6aeb0 HMH |
6163 | * |
6164 | * For firmware bugs, refer to: | |
6165 | * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues | |
6166 | * | |
efa27145 | 6167 | * TPACPI_FAN_WR_ACPI_FANS: |
56b6aeb0 HMH |
6168 | * ThinkPad X31, X40, X41. Not available in the X60. |
6169 | * | |
6170 | * FANS ACPI handle: takes three arguments: low speed, medium speed, | |
6171 | * high speed. ACPI DSDT seems to map these three speeds to levels | |
6172 | * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH | |
6173 | * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") | |
6174 | * | |
6175 | * The speeds are stored on handles | |
6176 | * (FANA:FAN9), (FANC:FANB), (FANE:FAND). | |
6177 | * | |
6178 | * There are three default speed sets, acessible as handles: | |
6179 | * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H | |
6180 | * | |
6181 | * ACPI DSDT switches which set is in use depending on various | |
6182 | * factors. | |
6183 | * | |
efa27145 | 6184 | * TPACPI_FAN_WR_TPEC is also available and should be used to |
56b6aeb0 HMH |
6185 | * command the fan. The X31/X40/X41 seems to have 8 fan levels, |
6186 | * but the ACPI tables just mention level 7. | |
6187 | */ | |
6188 | ||
f74a27d4 HMH |
6189 | enum { /* Fan control constants */ |
6190 | fan_status_offset = 0x2f, /* EC register 0x2f */ | |
6191 | fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) | |
6192 | * 0x84 must be read before 0x85 */ | |
6193 | ||
6194 | TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ | |
6195 | TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ | |
6196 | ||
6197 | TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ | |
6198 | }; | |
6199 | ||
6200 | enum fan_status_access_mode { | |
6201 | TPACPI_FAN_NONE = 0, /* No fan status or control */ | |
6202 | TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ | |
6203 | TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ | |
6204 | }; | |
6205 | ||
6206 | enum fan_control_access_mode { | |
6207 | TPACPI_FAN_WR_NONE = 0, /* No fan control */ | |
6208 | TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ | |
6209 | TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ | |
6210 | TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ | |
6211 | }; | |
6212 | ||
6213 | enum fan_control_commands { | |
6214 | TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ | |
6215 | TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ | |
6216 | TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, | |
6217 | * and also watchdog cmd */ | |
6218 | }; | |
6219 | ||
6220 | static int fan_control_allowed; | |
6221 | ||
69ba91cb HMH |
6222 | static enum fan_status_access_mode fan_status_access_mode; |
6223 | static enum fan_control_access_mode fan_control_access_mode; | |
6224 | static enum fan_control_commands fan_control_commands; | |
78f81cc4 | 6225 | |
778b4d74 | 6226 | static u8 fan_control_initial_status; |
fe98a52c | 6227 | static u8 fan_control_desired_level; |
0081b162 | 6228 | static u8 fan_control_resume_level; |
f74a27d4 HMH |
6229 | static int fan_watchdog_maxinterval; |
6230 | ||
6231 | static struct mutex fan_mutex; | |
778b4d74 | 6232 | |
25c68a33 | 6233 | static void fan_watchdog_fire(struct work_struct *ignored); |
25c68a33 | 6234 | static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); |
16663a87 | 6235 | |
e0c7dfe7 HMH |
6236 | TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ |
6237 | TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ | |
56b6aeb0 HMH |
6238 | "\\FSPD", /* 600e/x, 770e, 770x */ |
6239 | ); /* all others */ | |
e0c7dfe7 | 6240 | TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ |
56b6aeb0 HMH |
6241 | "JFNS", /* 770x-JL */ |
6242 | ); /* all others */ | |
6243 | ||
1c2ece75 HMH |
6244 | /* |
6245 | * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the | |
6246 | * HFSP register at boot, so it contains 0x07 but the Thinkpad could | |
6247 | * be in auto mode (0x80). | |
6248 | * | |
6249 | * This is corrected by any write to HFSP either by the driver, or | |
6250 | * by the firmware. | |
6251 | * | |
6252 | * We assume 0x07 really means auto mode while this quirk is active, | |
6253 | * as this is far more likely than the ThinkPad being in level 7, | |
6254 | * which is only used by the firmware during thermal emergencies. | |
6255 | */ | |
6256 | ||
6257 | static void fan_quirk1_detect(void) | |
6258 | { | |
6259 | /* In some ThinkPads, neither the EC nor the ACPI | |
6260 | * DSDT initialize the HFSP register, and it ends up | |
6261 | * being initially set to 0x07 when it *could* be | |
6262 | * either 0x07 or 0x80. | |
6263 | * | |
6264 | * Enable for TP-1Y (T43), TP-78 (R51e), | |
6265 | * TP-76 (R52), TP-70 (T43, R52), which are known | |
6266 | * to be buggy. */ | |
6267 | if (fan_control_initial_status == 0x07) { | |
6268 | switch (thinkpad_id.ec_model) { | |
6269 | case 0x5931: /* TP-1Y */ | |
6270 | case 0x3837: /* TP-78 */ | |
6271 | case 0x3637: /* TP-76 */ | |
6272 | case 0x3037: /* TP-70 */ | |
6273 | printk(TPACPI_NOTICE | |
6274 | "fan_init: initial fan status is unknown, " | |
6275 | "assuming it is in auto mode\n"); | |
6276 | tp_features.fan_ctrl_status_undef = 1; | |
6277 | ;; | |
6278 | } | |
6279 | } | |
6280 | } | |
6281 | ||
6282 | static void fan_quirk1_handle(u8 *fan_status) | |
6283 | { | |
6284 | if (unlikely(tp_features.fan_ctrl_status_undef)) { | |
6285 | if (*fan_status != fan_control_initial_status) { | |
6286 | /* something changed the HFSP regisnter since | |
6287 | * driver init time, so it is not undefined | |
6288 | * anymore */ | |
6289 | tp_features.fan_ctrl_status_undef = 0; | |
6290 | } else { | |
6291 | /* Return most likely status. In fact, it | |
6292 | * might be the only possible status */ | |
6293 | *fan_status = TP_EC_FAN_AUTO; | |
6294 | } | |
6295 | } | |
6296 | } | |
6297 | ||
fe98a52c | 6298 | /* |
b21a15f6 | 6299 | * Call with fan_mutex held |
fe98a52c | 6300 | */ |
b21a15f6 | 6301 | static void fan_update_desired_level(u8 status) |
fe98a52c | 6302 | { |
b21a15f6 HMH |
6303 | if ((status & |
6304 | (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { | |
6305 | if (status > 7) | |
6306 | fan_control_desired_level = 7; | |
6307 | else | |
6308 | fan_control_desired_level = status; | |
6309 | } | |
6310 | } | |
fe98a52c | 6311 | |
b21a15f6 HMH |
6312 | static int fan_get_status(u8 *status) |
6313 | { | |
6314 | u8 s; | |
fe98a52c | 6315 | |
b21a15f6 HMH |
6316 | /* TODO: |
6317 | * Add TPACPI_FAN_RD_ACPI_FANS ? */ | |
fe98a52c | 6318 | |
b21a15f6 HMH |
6319 | switch (fan_status_access_mode) { |
6320 | case TPACPI_FAN_RD_ACPI_GFAN: | |
6321 | /* 570, 600e/x, 770e, 770x */ | |
fe98a52c | 6322 | |
b21a15f6 HMH |
6323 | if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d"))) |
6324 | return -EIO; | |
fe98a52c | 6325 | |
b21a15f6 HMH |
6326 | if (likely(status)) |
6327 | *status = s & 0x07; | |
fe98a52c | 6328 | |
b21a15f6 HMH |
6329 | break; |
6330 | ||
6331 | case TPACPI_FAN_RD_TPEC: | |
6332 | /* all except 570, 600e/x, 770e, 770x */ | |
6333 | if (unlikely(!acpi_ec_read(fan_status_offset, &s))) | |
6334 | return -EIO; | |
6335 | ||
1c2ece75 | 6336 | if (likely(status)) { |
b21a15f6 | 6337 | *status = s; |
1c2ece75 HMH |
6338 | fan_quirk1_handle(status); |
6339 | } | |
fe98a52c | 6340 | |
fe98a52c | 6341 | break; |
b21a15f6 | 6342 | |
fe98a52c | 6343 | default: |
b21a15f6 | 6344 | return -ENXIO; |
fe98a52c HMH |
6345 | } |
6346 | ||
b21a15f6 HMH |
6347 | return 0; |
6348 | } | |
fe98a52c | 6349 | |
b21a15f6 HMH |
6350 | static int fan_get_status_safe(u8 *status) |
6351 | { | |
6352 | int rc; | |
6353 | u8 s; | |
fe98a52c | 6354 | |
7646ea88 | 6355 | if (mutex_lock_killable(&fan_mutex)) |
b21a15f6 HMH |
6356 | return -ERESTARTSYS; |
6357 | rc = fan_get_status(&s); | |
6358 | if (!rc) | |
6359 | fan_update_desired_level(s); | |
6360 | mutex_unlock(&fan_mutex); | |
fe98a52c | 6361 | |
b21a15f6 HMH |
6362 | if (status) |
6363 | *status = s; | |
fe98a52c | 6364 | |
b21a15f6 HMH |
6365 | return rc; |
6366 | } | |
6367 | ||
6368 | static int fan_get_speed(unsigned int *speed) | |
fe98a52c | 6369 | { |
b21a15f6 | 6370 | u8 hi, lo; |
fe98a52c | 6371 | |
b21a15f6 HMH |
6372 | switch (fan_status_access_mode) { |
6373 | case TPACPI_FAN_RD_TPEC: | |
6374 | /* all except 570, 600e/x, 770e, 770x */ | |
6375 | if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || | |
6376 | !acpi_ec_read(fan_rpm_offset + 1, &hi))) | |
6377 | return -EIO; | |
fe98a52c | 6378 | |
b21a15f6 HMH |
6379 | if (likely(speed)) |
6380 | *speed = (hi << 8) | lo; | |
fe98a52c | 6381 | |
b21a15f6 | 6382 | break; |
fe98a52c | 6383 | |
b21a15f6 HMH |
6384 | default: |
6385 | return -ENXIO; | |
6386 | } | |
fe98a52c | 6387 | |
b21a15f6 | 6388 | return 0; |
fe98a52c HMH |
6389 | } |
6390 | ||
b21a15f6 | 6391 | static int fan_set_level(int level) |
fe98a52c | 6392 | { |
b21a15f6 HMH |
6393 | if (!fan_control_allowed) |
6394 | return -EPERM; | |
fe98a52c | 6395 | |
b21a15f6 HMH |
6396 | switch (fan_control_access_mode) { |
6397 | case TPACPI_FAN_WR_ACPI_SFAN: | |
6398 | if (level >= 0 && level <= 7) { | |
6399 | if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) | |
6400 | return -EIO; | |
6401 | } else | |
6402 | return -EINVAL; | |
6403 | break; | |
fe98a52c | 6404 | |
b21a15f6 HMH |
6405 | case TPACPI_FAN_WR_ACPI_FANS: |
6406 | case TPACPI_FAN_WR_TPEC: | |
0081b162 HMH |
6407 | if (!(level & TP_EC_FAN_AUTO) && |
6408 | !(level & TP_EC_FAN_FULLSPEED) && | |
b21a15f6 HMH |
6409 | ((level < 0) || (level > 7))) |
6410 | return -EINVAL; | |
fe98a52c | 6411 | |
b21a15f6 HMH |
6412 | /* safety net should the EC not support AUTO |
6413 | * or FULLSPEED mode bits and just ignore them */ | |
6414 | if (level & TP_EC_FAN_FULLSPEED) | |
6415 | level |= 7; /* safety min speed 7 */ | |
547266e4 | 6416 | else if (level & TP_EC_FAN_AUTO) |
b21a15f6 | 6417 | level |= 4; /* safety min speed 4 */ |
fe98a52c | 6418 | |
b21a15f6 HMH |
6419 | if (!acpi_ec_write(fan_status_offset, level)) |
6420 | return -EIO; | |
6421 | else | |
6422 | tp_features.fan_ctrl_status_undef = 0; | |
6423 | break; | |
fe98a52c | 6424 | |
b21a15f6 HMH |
6425 | default: |
6426 | return -ENXIO; | |
6427 | } | |
74a60c0f HMH |
6428 | |
6429 | vdbg_printk(TPACPI_DBG_FAN, | |
6430 | "fan control: set fan control register to 0x%02x\n", level); | |
b21a15f6 | 6431 | return 0; |
fe98a52c HMH |
6432 | } |
6433 | ||
b21a15f6 | 6434 | static int fan_set_level_safe(int level) |
fe98a52c | 6435 | { |
b21a15f6 | 6436 | int rc; |
fe98a52c | 6437 | |
b21a15f6 HMH |
6438 | if (!fan_control_allowed) |
6439 | return -EPERM; | |
fe98a52c | 6440 | |
7646ea88 | 6441 | if (mutex_lock_killable(&fan_mutex)) |
b21a15f6 | 6442 | return -ERESTARTSYS; |
fe98a52c | 6443 | |
b21a15f6 HMH |
6444 | if (level == TPACPI_FAN_LAST_LEVEL) |
6445 | level = fan_control_desired_level; | |
fe98a52c | 6446 | |
b21a15f6 HMH |
6447 | rc = fan_set_level(level); |
6448 | if (!rc) | |
6449 | fan_update_desired_level(level); | |
6450 | ||
6451 | mutex_unlock(&fan_mutex); | |
6452 | return rc; | |
fe98a52c HMH |
6453 | } |
6454 | ||
b21a15f6 | 6455 | static int fan_set_enable(void) |
fe98a52c | 6456 | { |
b21a15f6 HMH |
6457 | u8 s; |
6458 | int rc; | |
fe98a52c | 6459 | |
ecf2a80a HMH |
6460 | if (!fan_control_allowed) |
6461 | return -EPERM; | |
6462 | ||
7646ea88 | 6463 | if (mutex_lock_killable(&fan_mutex)) |
b21a15f6 | 6464 | return -ERESTARTSYS; |
fe98a52c | 6465 | |
b21a15f6 HMH |
6466 | switch (fan_control_access_mode) { |
6467 | case TPACPI_FAN_WR_ACPI_FANS: | |
6468 | case TPACPI_FAN_WR_TPEC: | |
6469 | rc = fan_get_status(&s); | |
6470 | if (rc < 0) | |
6471 | break; | |
fe98a52c | 6472 | |
b21a15f6 HMH |
6473 | /* Don't go out of emergency fan mode */ |
6474 | if (s != 7) { | |
6475 | s &= 0x07; | |
6476 | s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ | |
6477 | } | |
fe98a52c | 6478 | |
b21a15f6 HMH |
6479 | if (!acpi_ec_write(fan_status_offset, s)) |
6480 | rc = -EIO; | |
6481 | else { | |
6482 | tp_features.fan_ctrl_status_undef = 0; | |
6483 | rc = 0; | |
6484 | } | |
6485 | break; | |
fe98a52c | 6486 | |
b21a15f6 HMH |
6487 | case TPACPI_FAN_WR_ACPI_SFAN: |
6488 | rc = fan_get_status(&s); | |
6489 | if (rc < 0) | |
6490 | break; | |
fe98a52c | 6491 | |
b21a15f6 | 6492 | s &= 0x07; |
fe98a52c | 6493 | |
b21a15f6 HMH |
6494 | /* Set fan to at least level 4 */ |
6495 | s |= 4; | |
fe08bc4b | 6496 | |
b21a15f6 | 6497 | if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) |
35ff8b9f | 6498 | rc = -EIO; |
b21a15f6 HMH |
6499 | else |
6500 | rc = 0; | |
6501 | break; | |
78f81cc4 | 6502 | |
b21a15f6 HMH |
6503 | default: |
6504 | rc = -ENXIO; | |
6505 | } | |
5fba344c | 6506 | |
b21a15f6 | 6507 | mutex_unlock(&fan_mutex); |
74a60c0f HMH |
6508 | |
6509 | if (!rc) | |
6510 | vdbg_printk(TPACPI_DBG_FAN, | |
6511 | "fan control: set fan control register to 0x%02x\n", | |
6512 | s); | |
b21a15f6 | 6513 | return rc; |
69ba91cb | 6514 | } |
78f81cc4 | 6515 | |
b21a15f6 | 6516 | static int fan_set_disable(void) |
78f81cc4 | 6517 | { |
b21a15f6 | 6518 | int rc; |
c52f0aa5 | 6519 | |
b21a15f6 HMH |
6520 | if (!fan_control_allowed) |
6521 | return -EPERM; | |
78f81cc4 | 6522 | |
7646ea88 | 6523 | if (mutex_lock_killable(&fan_mutex)) |
b21a15f6 | 6524 | return -ERESTARTSYS; |
3ef8a609 | 6525 | |
b21a15f6 HMH |
6526 | rc = 0; |
6527 | switch (fan_control_access_mode) { | |
6528 | case TPACPI_FAN_WR_ACPI_FANS: | |
6529 | case TPACPI_FAN_WR_TPEC: | |
6530 | if (!acpi_ec_write(fan_status_offset, 0x00)) | |
6531 | rc = -EIO; | |
6532 | else { | |
6533 | fan_control_desired_level = 0; | |
6534 | tp_features.fan_ctrl_status_undef = 0; | |
6535 | } | |
3ef8a609 HMH |
6536 | break; |
6537 | ||
b21a15f6 HMH |
6538 | case TPACPI_FAN_WR_ACPI_SFAN: |
6539 | if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) | |
6540 | rc = -EIO; | |
6541 | else | |
6542 | fan_control_desired_level = 0; | |
c52f0aa5 HMH |
6543 | break; |
6544 | ||
6545 | default: | |
b21a15f6 | 6546 | rc = -ENXIO; |
78f81cc4 BD |
6547 | } |
6548 | ||
74a60c0f HMH |
6549 | if (!rc) |
6550 | vdbg_printk(TPACPI_DBG_FAN, | |
6551 | "fan control: set fan control register to 0\n"); | |
fe98a52c | 6552 | |
fe98a52c | 6553 | mutex_unlock(&fan_mutex); |
fe98a52c HMH |
6554 | return rc; |
6555 | } | |
6556 | ||
b21a15f6 | 6557 | static int fan_set_speed(int speed) |
c52f0aa5 | 6558 | { |
b21a15f6 | 6559 | int rc; |
c52f0aa5 | 6560 | |
b21a15f6 HMH |
6561 | if (!fan_control_allowed) |
6562 | return -EPERM; | |
3ef8a609 | 6563 | |
7646ea88 | 6564 | if (mutex_lock_killable(&fan_mutex)) |
b21a15f6 | 6565 | return -ERESTARTSYS; |
c52f0aa5 | 6566 | |
b21a15f6 HMH |
6567 | rc = 0; |
6568 | switch (fan_control_access_mode) { | |
6569 | case TPACPI_FAN_WR_ACPI_FANS: | |
6570 | if (speed >= 0 && speed <= 65535) { | |
6571 | if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", | |
6572 | speed, speed, speed)) | |
6573 | rc = -EIO; | |
6574 | } else | |
6575 | rc = -EINVAL; | |
c52f0aa5 HMH |
6576 | break; |
6577 | ||
6578 | default: | |
b21a15f6 | 6579 | rc = -ENXIO; |
c52f0aa5 HMH |
6580 | } |
6581 | ||
b21a15f6 HMH |
6582 | mutex_unlock(&fan_mutex); |
6583 | return rc; | |
16663a87 HMH |
6584 | } |
6585 | ||
6586 | static void fan_watchdog_reset(void) | |
6587 | { | |
94954cc6 | 6588 | static int fan_watchdog_active; |
16663a87 | 6589 | |
4985cd0a HMH |
6590 | if (fan_control_access_mode == TPACPI_FAN_WR_NONE) |
6591 | return; | |
6592 | ||
16663a87 HMH |
6593 | if (fan_watchdog_active) |
6594 | cancel_delayed_work(&fan_watchdog_task); | |
6595 | ||
8fef502e HMH |
6596 | if (fan_watchdog_maxinterval > 0 && |
6597 | tpacpi_lifecycle != TPACPI_LIFE_EXITING) { | |
16663a87 | 6598 | fan_watchdog_active = 1; |
e0e3c061 | 6599 | if (!queue_delayed_work(tpacpi_wq, &fan_watchdog_task, |
16663a87 HMH |
6600 | msecs_to_jiffies(fan_watchdog_maxinterval |
6601 | * 1000))) { | |
35ff8b9f | 6602 | printk(TPACPI_ERR |
e0e3c061 | 6603 | "failed to queue the fan watchdog, " |
16663a87 HMH |
6604 | "watchdog will not trigger\n"); |
6605 | } | |
6606 | } else | |
6607 | fan_watchdog_active = 0; | |
6608 | } | |
6609 | ||
b21a15f6 | 6610 | static void fan_watchdog_fire(struct work_struct *ignored) |
78f81cc4 | 6611 | { |
b21a15f6 | 6612 | int rc; |
18ad7996 | 6613 | |
b21a15f6 HMH |
6614 | if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) |
6615 | return; | |
a12095c2 | 6616 | |
e0c7dfe7 | 6617 | printk(TPACPI_NOTICE "fan watchdog: enabling fan\n"); |
b21a15f6 HMH |
6618 | rc = fan_set_enable(); |
6619 | if (rc < 0) { | |
e0c7dfe7 | 6620 | printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, " |
b21a15f6 HMH |
6621 | "will try again later...\n", -rc); |
6622 | /* reschedule for later */ | |
6623 | fan_watchdog_reset(); | |
6624 | } | |
6625 | } | |
eaa7571b | 6626 | |
b21a15f6 HMH |
6627 | /* |
6628 | * SYSFS fan layout: hwmon compatible (device) | |
6629 | * | |
6630 | * pwm*_enable: | |
6631 | * 0: "disengaged" mode | |
6632 | * 1: manual mode | |
6633 | * 2: native EC "auto" mode (recommended, hardware default) | |
6634 | * | |
6635 | * pwm*: set speed in manual mode, ignored otherwise. | |
6636 | * 0 is level 0; 255 is level 7. Intermediate points done with linear | |
6637 | * interpolation. | |
6638 | * | |
6639 | * fan*_input: tachometer reading, RPM | |
6640 | * | |
6641 | * | |
6642 | * SYSFS fan layout: extensions | |
6643 | * | |
6644 | * fan_watchdog (driver): | |
6645 | * fan watchdog interval in seconds, 0 disables (default), max 120 | |
6646 | */ | |
6647 | ||
6648 | /* sysfs fan pwm1_enable ----------------------------------------------- */ | |
6649 | static ssize_t fan_pwm1_enable_show(struct device *dev, | |
6650 | struct device_attribute *attr, | |
6651 | char *buf) | |
6652 | { | |
6653 | int res, mode; | |
6654 | u8 status; | |
6655 | ||
6656 | res = fan_get_status_safe(&status); | |
6657 | if (res) | |
6658 | return res; | |
6659 | ||
b21a15f6 HMH |
6660 | if (status & TP_EC_FAN_FULLSPEED) { |
6661 | mode = 0; | |
6662 | } else if (status & TP_EC_FAN_AUTO) { | |
6663 | mode = 2; | |
6664 | } else | |
6665 | mode = 1; | |
6666 | ||
6667 | return snprintf(buf, PAGE_SIZE, "%d\n", mode); | |
6668 | } | |
a12095c2 | 6669 | |
b21a15f6 HMH |
6670 | static ssize_t fan_pwm1_enable_store(struct device *dev, |
6671 | struct device_attribute *attr, | |
6672 | const char *buf, size_t count) | |
6673 | { | |
6674 | unsigned long t; | |
6675 | int res, level; | |
6676 | ||
6677 | if (parse_strtoul(buf, 2, &t)) | |
6678 | return -EINVAL; | |
6679 | ||
74a60c0f HMH |
6680 | tpacpi_disclose_usertask("hwmon pwm1_enable", |
6681 | "set fan mode to %lu\n", t); | |
6682 | ||
b21a15f6 HMH |
6683 | switch (t) { |
6684 | case 0: | |
6685 | level = TP_EC_FAN_FULLSPEED; | |
6686 | break; | |
6687 | case 1: | |
6688 | level = TPACPI_FAN_LAST_LEVEL; | |
6689 | break; | |
6690 | case 2: | |
6691 | level = TP_EC_FAN_AUTO; | |
6692 | break; | |
6693 | case 3: | |
6694 | /* reserved for software-controlled auto mode */ | |
6695 | return -ENOSYS; | |
18ad7996 | 6696 | default: |
b21a15f6 | 6697 | return -EINVAL; |
18ad7996 | 6698 | } |
b21a15f6 HMH |
6699 | |
6700 | res = fan_set_level_safe(level); | |
6701 | if (res == -ENXIO) | |
6702 | return -EINVAL; | |
6703 | else if (res < 0) | |
6704 | return res; | |
6705 | ||
6706 | fan_watchdog_reset(); | |
6707 | ||
6708 | return count; | |
18ad7996 HMH |
6709 | } |
6710 | ||
b21a15f6 HMH |
6711 | static struct device_attribute dev_attr_fan_pwm1_enable = |
6712 | __ATTR(pwm1_enable, S_IWUSR | S_IRUGO, | |
6713 | fan_pwm1_enable_show, fan_pwm1_enable_store); | |
6714 | ||
6715 | /* sysfs fan pwm1 ------------------------------------------------------ */ | |
6716 | static ssize_t fan_pwm1_show(struct device *dev, | |
6717 | struct device_attribute *attr, | |
6718 | char *buf) | |
fe98a52c | 6719 | { |
b21a15f6 HMH |
6720 | int res; |
6721 | u8 status; | |
fe98a52c | 6722 | |
b21a15f6 HMH |
6723 | res = fan_get_status_safe(&status); |
6724 | if (res) | |
6725 | return res; | |
ecf2a80a | 6726 | |
b21a15f6 HMH |
6727 | if ((status & |
6728 | (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) | |
6729 | status = fan_control_desired_level; | |
fe98a52c | 6730 | |
b21a15f6 HMH |
6731 | if (status > 7) |
6732 | status = 7; | |
fe98a52c | 6733 | |
b21a15f6 | 6734 | return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7); |
fe98a52c HMH |
6735 | } |
6736 | ||
b21a15f6 HMH |
6737 | static ssize_t fan_pwm1_store(struct device *dev, |
6738 | struct device_attribute *attr, | |
6739 | const char *buf, size_t count) | |
18ad7996 | 6740 | { |
b21a15f6 | 6741 | unsigned long s; |
1c6a334e | 6742 | int rc; |
b21a15f6 | 6743 | u8 status, newlevel; |
1c6a334e | 6744 | |
b21a15f6 HMH |
6745 | if (parse_strtoul(buf, 255, &s)) |
6746 | return -EINVAL; | |
6747 | ||
74a60c0f HMH |
6748 | tpacpi_disclose_usertask("hwmon pwm1", |
6749 | "set fan speed to %lu\n", s); | |
6750 | ||
b21a15f6 HMH |
6751 | /* scale down from 0-255 to 0-7 */ |
6752 | newlevel = (s >> 5) & 0x07; | |
ecf2a80a | 6753 | |
7646ea88 | 6754 | if (mutex_lock_killable(&fan_mutex)) |
fc589a3c | 6755 | return -ERESTARTSYS; |
40ca9fdf | 6756 | |
b21a15f6 HMH |
6757 | rc = fan_get_status(&status); |
6758 | if (!rc && (status & | |
6759 | (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { | |
6760 | rc = fan_set_level(newlevel); | |
6761 | if (rc == -ENXIO) | |
6762 | rc = -EINVAL; | |
6763 | else if (!rc) { | |
6764 | fan_update_desired_level(newlevel); | |
6765 | fan_watchdog_reset(); | |
eaa7571b | 6766 | } |
b21a15f6 | 6767 | } |
1c6a334e | 6768 | |
b21a15f6 HMH |
6769 | mutex_unlock(&fan_mutex); |
6770 | return (rc)? rc : count; | |
6771 | } | |
1c6a334e | 6772 | |
b21a15f6 HMH |
6773 | static struct device_attribute dev_attr_fan_pwm1 = |
6774 | __ATTR(pwm1, S_IWUSR | S_IRUGO, | |
6775 | fan_pwm1_show, fan_pwm1_store); | |
1c6a334e | 6776 | |
b21a15f6 HMH |
6777 | /* sysfs fan fan1_input ------------------------------------------------ */ |
6778 | static ssize_t fan_fan1_input_show(struct device *dev, | |
6779 | struct device_attribute *attr, | |
6780 | char *buf) | |
6781 | { | |
6782 | int res; | |
6783 | unsigned int speed; | |
1c6a334e | 6784 | |
b21a15f6 HMH |
6785 | res = fan_get_speed(&speed); |
6786 | if (res < 0) | |
6787 | return res; | |
1c6a334e | 6788 | |
b21a15f6 HMH |
6789 | return snprintf(buf, PAGE_SIZE, "%u\n", speed); |
6790 | } | |
18ad7996 | 6791 | |
b21a15f6 HMH |
6792 | static struct device_attribute dev_attr_fan_fan1_input = |
6793 | __ATTR(fan1_input, S_IRUGO, | |
6794 | fan_fan1_input_show, NULL); | |
40ca9fdf | 6795 | |
b21a15f6 HMH |
6796 | /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ |
6797 | static ssize_t fan_fan_watchdog_show(struct device_driver *drv, | |
6798 | char *buf) | |
6799 | { | |
6800 | return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval); | |
18ad7996 HMH |
6801 | } |
6802 | ||
b21a15f6 HMH |
6803 | static ssize_t fan_fan_watchdog_store(struct device_driver *drv, |
6804 | const char *buf, size_t count) | |
18ad7996 | 6805 | { |
b21a15f6 HMH |
6806 | unsigned long t; |
6807 | ||
6808 | if (parse_strtoul(buf, 120, &t)) | |
6809 | return -EINVAL; | |
40ca9fdf | 6810 | |
ecf2a80a HMH |
6811 | if (!fan_control_allowed) |
6812 | return -EPERM; | |
6813 | ||
b21a15f6 HMH |
6814 | fan_watchdog_maxinterval = t; |
6815 | fan_watchdog_reset(); | |
40ca9fdf | 6816 | |
74a60c0f HMH |
6817 | tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t); |
6818 | ||
b21a15f6 HMH |
6819 | return count; |
6820 | } | |
6821 | ||
6822 | static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO, | |
6823 | fan_fan_watchdog_show, fan_fan_watchdog_store); | |
6824 | ||
6825 | /* --------------------------------------------------------------------- */ | |
6826 | static struct attribute *fan_attributes[] = { | |
6827 | &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr, | |
6828 | &dev_attr_fan_fan1_input.attr, | |
6829 | NULL | |
6830 | }; | |
6831 | ||
6832 | static const struct attribute_group fan_attr_group = { | |
6833 | .attrs = fan_attributes, | |
6834 | }; | |
6835 | ||
6836 | static int __init fan_init(struct ibm_init_struct *iibm) | |
6837 | { | |
6838 | int rc; | |
6839 | ||
74a60c0f HMH |
6840 | vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, |
6841 | "initializing fan subdriver\n"); | |
b21a15f6 HMH |
6842 | |
6843 | mutex_init(&fan_mutex); | |
6844 | fan_status_access_mode = TPACPI_FAN_NONE; | |
6845 | fan_control_access_mode = TPACPI_FAN_WR_NONE; | |
6846 | fan_control_commands = 0; | |
6847 | fan_watchdog_maxinterval = 0; | |
6848 | tp_features.fan_ctrl_status_undef = 0; | |
6849 | fan_control_desired_level = 7; | |
6850 | ||
e0c7dfe7 HMH |
6851 | TPACPI_ACPIHANDLE_INIT(fans); |
6852 | TPACPI_ACPIHANDLE_INIT(gfan); | |
6853 | TPACPI_ACPIHANDLE_INIT(sfan); | |
b21a15f6 HMH |
6854 | |
6855 | if (gfan_handle) { | |
6856 | /* 570, 600e/x, 770e, 770x */ | |
6857 | fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; | |
6858 | } else { | |
6859 | /* all other ThinkPads: note that even old-style | |
6860 | * ThinkPad ECs supports the fan control register */ | |
6861 | if (likely(acpi_ec_read(fan_status_offset, | |
6862 | &fan_control_initial_status))) { | |
6863 | fan_status_access_mode = TPACPI_FAN_RD_TPEC; | |
1c2ece75 | 6864 | fan_quirk1_detect(); |
b21a15f6 | 6865 | } else { |
e0c7dfe7 | 6866 | printk(TPACPI_ERR |
b21a15f6 HMH |
6867 | "ThinkPad ACPI EC access misbehaving, " |
6868 | "fan status and control unavailable\n"); | |
6869 | return 1; | |
6870 | } | |
6871 | } | |
6872 | ||
6873 | if (sfan_handle) { | |
6874 | /* 570, 770x-JL */ | |
6875 | fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; | |
6876 | fan_control_commands |= | |
6877 | TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; | |
6878 | } else { | |
6879 | if (!gfan_handle) { | |
6880 | /* gfan without sfan means no fan control */ | |
6881 | /* all other models implement TP EC 0x2f control */ | |
6882 | ||
6883 | if (fans_handle) { | |
6884 | /* X31, X40, X41 */ | |
6885 | fan_control_access_mode = | |
6886 | TPACPI_FAN_WR_ACPI_FANS; | |
6887 | fan_control_commands |= | |
6888 | TPACPI_FAN_CMD_SPEED | | |
6889 | TPACPI_FAN_CMD_LEVEL | | |
6890 | TPACPI_FAN_CMD_ENABLE; | |
6891 | } else { | |
6892 | fan_control_access_mode = TPACPI_FAN_WR_TPEC; | |
6893 | fan_control_commands |= | |
6894 | TPACPI_FAN_CMD_LEVEL | | |
6895 | TPACPI_FAN_CMD_ENABLE; | |
6896 | } | |
fe98a52c | 6897 | } |
b21a15f6 | 6898 | } |
18ad7996 | 6899 | |
74a60c0f HMH |
6900 | vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, |
6901 | "fan is %s, modes %d, %d\n", | |
b21a15f6 HMH |
6902 | str_supported(fan_status_access_mode != TPACPI_FAN_NONE || |
6903 | fan_control_access_mode != TPACPI_FAN_WR_NONE), | |
6904 | fan_status_access_mode, fan_control_access_mode); | |
1c6a334e | 6905 | |
b21a15f6 HMH |
6906 | /* fan control master switch */ |
6907 | if (!fan_control_allowed) { | |
6908 | fan_control_access_mode = TPACPI_FAN_WR_NONE; | |
6909 | fan_control_commands = 0; | |
74a60c0f | 6910 | dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, |
b21a15f6 | 6911 | "fan control features disabled by parameter\n"); |
18ad7996 | 6912 | } |
40ca9fdf | 6913 | |
b21a15f6 HMH |
6914 | /* update fan_control_desired_level */ |
6915 | if (fan_status_access_mode != TPACPI_FAN_NONE) | |
6916 | fan_get_status_safe(NULL); | |
fe98a52c | 6917 | |
b21a15f6 HMH |
6918 | if (fan_status_access_mode != TPACPI_FAN_NONE || |
6919 | fan_control_access_mode != TPACPI_FAN_WR_NONE) { | |
6920 | rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, | |
6921 | &fan_attr_group); | |
b21a15f6 HMH |
6922 | if (rc < 0) |
6923 | return rc; | |
9c0a76e1 HMH |
6924 | |
6925 | rc = driver_create_file(&tpacpi_hwmon_pdriver.driver, | |
6926 | &driver_attr_fan_watchdog); | |
6927 | if (rc < 0) { | |
6928 | sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, | |
6929 | &fan_attr_group); | |
6930 | return rc; | |
6931 | } | |
b21a15f6 HMH |
6932 | return 0; |
6933 | } else | |
6934 | return 1; | |
56b6aeb0 HMH |
6935 | } |
6936 | ||
b21a15f6 | 6937 | static void fan_exit(void) |
56b6aeb0 | 6938 | { |
74a60c0f | 6939 | vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN, |
35ff8b9f | 6940 | "cancelling any pending fan watchdog tasks\n"); |
56b6aeb0 | 6941 | |
b21a15f6 HMH |
6942 | /* FIXME: can we really do this unconditionally? */ |
6943 | sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group); | |
35ff8b9f HMH |
6944 | driver_remove_file(&tpacpi_hwmon_pdriver.driver, |
6945 | &driver_attr_fan_watchdog); | |
40ca9fdf | 6946 | |
b21a15f6 | 6947 | cancel_delayed_work(&fan_watchdog_task); |
e0e3c061 | 6948 | flush_workqueue(tpacpi_wq); |
56b6aeb0 HMH |
6949 | } |
6950 | ||
75700e53 HMH |
6951 | static void fan_suspend(pm_message_t state) |
6952 | { | |
0081b162 HMH |
6953 | int rc; |
6954 | ||
75700e53 HMH |
6955 | if (!fan_control_allowed) |
6956 | return; | |
6957 | ||
6958 | /* Store fan status in cache */ | |
0081b162 HMH |
6959 | fan_control_resume_level = 0; |
6960 | rc = fan_get_status_safe(&fan_control_resume_level); | |
6961 | if (rc < 0) | |
6962 | printk(TPACPI_NOTICE | |
6963 | "failed to read fan level for later " | |
6964 | "restore during resume: %d\n", rc); | |
6965 | ||
6966 | /* if it is undefined, don't attempt to restore it. | |
6967 | * KEEP THIS LAST */ | |
75700e53 | 6968 | if (tp_features.fan_ctrl_status_undef) |
0081b162 | 6969 | fan_control_resume_level = 0; |
75700e53 HMH |
6970 | } |
6971 | ||
6972 | static void fan_resume(void) | |
6973 | { | |
75700e53 HMH |
6974 | u8 current_level = 7; |
6975 | bool do_set = false; | |
0081b162 | 6976 | int rc; |
75700e53 HMH |
6977 | |
6978 | /* DSDT *always* updates status on resume */ | |
6979 | tp_features.fan_ctrl_status_undef = 0; | |
6980 | ||
75700e53 | 6981 | if (!fan_control_allowed || |
0081b162 | 6982 | !fan_control_resume_level || |
75700e53 HMH |
6983 | (fan_get_status_safe(¤t_level) < 0)) |
6984 | return; | |
6985 | ||
6986 | switch (fan_control_access_mode) { | |
6987 | case TPACPI_FAN_WR_ACPI_SFAN: | |
0081b162 HMH |
6988 | /* never decrease fan level */ |
6989 | do_set = (fan_control_resume_level > current_level); | |
75700e53 HMH |
6990 | break; |
6991 | case TPACPI_FAN_WR_ACPI_FANS: | |
6992 | case TPACPI_FAN_WR_TPEC: | |
0081b162 HMH |
6993 | /* never decrease fan level, scale is: |
6994 | * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO | |
6995 | * | |
6996 | * We expect the firmware to set either 7 or AUTO, but we | |
6997 | * handle FULLSPEED out of paranoia. | |
6998 | * | |
6999 | * So, we can safely only restore FULLSPEED or 7, anything | |
7000 | * else could slow the fan. Restoring AUTO is useless, at | |
7001 | * best that's exactly what the DSDT already set (it is the | |
7002 | * slower it uses). | |
7003 | * | |
7004 | * Always keep in mind that the DSDT *will* have set the | |
7005 | * fans to what the vendor supposes is the best level. We | |
7006 | * muck with it only to speed the fan up. | |
7007 | */ | |
7008 | if (fan_control_resume_level != 7 && | |
7009 | !(fan_control_resume_level & TP_EC_FAN_FULLSPEED)) | |
7010 | return; | |
7011 | else | |
7012 | do_set = !(current_level & TP_EC_FAN_FULLSPEED) && | |
7013 | (current_level != fan_control_resume_level); | |
75700e53 HMH |
7014 | break; |
7015 | default: | |
7016 | return; | |
7017 | } | |
7018 | if (do_set) { | |
7019 | printk(TPACPI_NOTICE | |
7020 | "restoring fan level to 0x%02x\n", | |
0081b162 HMH |
7021 | fan_control_resume_level); |
7022 | rc = fan_set_level_safe(fan_control_resume_level); | |
7023 | if (rc < 0) | |
7024 | printk(TPACPI_NOTICE | |
7025 | "failed to restore fan level: %d\n", rc); | |
75700e53 HMH |
7026 | } |
7027 | } | |
7028 | ||
56b6aeb0 HMH |
7029 | static int fan_read(char *p) |
7030 | { | |
7031 | int len = 0; | |
7032 | int rc; | |
7033 | u8 status; | |
7034 | unsigned int speed = 0; | |
7035 | ||
7036 | switch (fan_status_access_mode) { | |
efa27145 | 7037 | case TPACPI_FAN_RD_ACPI_GFAN: |
56b6aeb0 | 7038 | /* 570, 600e/x, 770e, 770x */ |
35ff8b9f HMH |
7039 | rc = fan_get_status_safe(&status); |
7040 | if (rc < 0) | |
56b6aeb0 HMH |
7041 | return rc; |
7042 | ||
7043 | len += sprintf(p + len, "status:\t\t%s\n" | |
7044 | "level:\t\t%d\n", | |
7045 | (status != 0) ? "enabled" : "disabled", status); | |
7046 | break; | |
7047 | ||
efa27145 | 7048 | case TPACPI_FAN_RD_TPEC: |
56b6aeb0 | 7049 | /* all except 570, 600e/x, 770e, 770x */ |
35ff8b9f HMH |
7050 | rc = fan_get_status_safe(&status); |
7051 | if (rc < 0) | |
56b6aeb0 HMH |
7052 | return rc; |
7053 | ||
56b6aeb0 HMH |
7054 | len += sprintf(p + len, "status:\t\t%s\n", |
7055 | (status != 0) ? "enabled" : "disabled"); | |
7056 | ||
35ff8b9f HMH |
7057 | rc = fan_get_speed(&speed); |
7058 | if (rc < 0) | |
56b6aeb0 HMH |
7059 | return rc; |
7060 | ||
7061 | len += sprintf(p + len, "speed:\t\t%d\n", speed); | |
7062 | ||
efa27145 | 7063 | if (status & TP_EC_FAN_FULLSPEED) |
56b6aeb0 HMH |
7064 | /* Disengaged mode takes precedence */ |
7065 | len += sprintf(p + len, "level:\t\tdisengaged\n"); | |
efa27145 | 7066 | else if (status & TP_EC_FAN_AUTO) |
56b6aeb0 HMH |
7067 | len += sprintf(p + len, "level:\t\tauto\n"); |
7068 | else | |
7069 | len += sprintf(p + len, "level:\t\t%d\n", status); | |
7070 | break; | |
7071 | ||
efa27145 | 7072 | case TPACPI_FAN_NONE: |
56b6aeb0 HMH |
7073 | default: |
7074 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
7075 | } | |
7076 | ||
efa27145 | 7077 | if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { |
56b6aeb0 HMH |
7078 | len += sprintf(p + len, "commands:\tlevel <level>"); |
7079 | ||
7080 | switch (fan_control_access_mode) { | |
efa27145 | 7081 | case TPACPI_FAN_WR_ACPI_SFAN: |
56b6aeb0 HMH |
7082 | len += sprintf(p + len, " (<level> is 0-7)\n"); |
7083 | break; | |
7084 | ||
7085 | default: | |
7086 | len += sprintf(p + len, " (<level> is 0-7, " | |
fe98a52c | 7087 | "auto, disengaged, full-speed)\n"); |
56b6aeb0 HMH |
7088 | break; |
7089 | } | |
7090 | } | |
18ad7996 | 7091 | |
efa27145 | 7092 | if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) |
56b6aeb0 | 7093 | len += sprintf(p + len, "commands:\tenable, disable\n" |
35ff8b9f HMH |
7094 | "commands:\twatchdog <timeout> (<timeout> " |
7095 | "is 0 (off), 1-120 (seconds))\n"); | |
1da177e4 | 7096 | |
efa27145 | 7097 | if (fan_control_commands & TPACPI_FAN_CMD_SPEED) |
56b6aeb0 HMH |
7098 | len += sprintf(p + len, "commands:\tspeed <speed>" |
7099 | " (<speed> is 0-65535)\n"); | |
7100 | ||
7101 | return len; | |
78f81cc4 BD |
7102 | } |
7103 | ||
18ad7996 HMH |
7104 | static int fan_write_cmd_level(const char *cmd, int *rc) |
7105 | { | |
7106 | int level; | |
7107 | ||
a12095c2 | 7108 | if (strlencmp(cmd, "level auto") == 0) |
efa27145 | 7109 | level = TP_EC_FAN_AUTO; |
fe98a52c | 7110 | else if ((strlencmp(cmd, "level disengaged") == 0) | |
35ff8b9f | 7111 | (strlencmp(cmd, "level full-speed") == 0)) |
efa27145 | 7112 | level = TP_EC_FAN_FULLSPEED; |
a12095c2 | 7113 | else if (sscanf(cmd, "level %d", &level) != 1) |
18ad7996 HMH |
7114 | return 0; |
7115 | ||
35ff8b9f HMH |
7116 | *rc = fan_set_level_safe(level); |
7117 | if (*rc == -ENXIO) | |
e0c7dfe7 | 7118 | printk(TPACPI_ERR "level command accepted for unsupported " |
18ad7996 | 7119 | "access mode %d", fan_control_access_mode); |
74a60c0f HMH |
7120 | else if (!*rc) |
7121 | tpacpi_disclose_usertask("procfs fan", | |
7122 | "set level to %d\n", level); | |
18ad7996 HMH |
7123 | |
7124 | return 1; | |
7125 | } | |
7126 | ||
7127 | static int fan_write_cmd_enable(const char *cmd, int *rc) | |
7128 | { | |
7129 | if (strlencmp(cmd, "enable") != 0) | |
7130 | return 0; | |
7131 | ||
35ff8b9f HMH |
7132 | *rc = fan_set_enable(); |
7133 | if (*rc == -ENXIO) | |
e0c7dfe7 | 7134 | printk(TPACPI_ERR "enable command accepted for unsupported " |
18ad7996 | 7135 | "access mode %d", fan_control_access_mode); |
74a60c0f HMH |
7136 | else if (!*rc) |
7137 | tpacpi_disclose_usertask("procfs fan", "enable\n"); | |
18ad7996 HMH |
7138 | |
7139 | return 1; | |
7140 | } | |
7141 | ||
7142 | static int fan_write_cmd_disable(const char *cmd, int *rc) | |
7143 | { | |
7144 | if (strlencmp(cmd, "disable") != 0) | |
7145 | return 0; | |
7146 | ||
35ff8b9f HMH |
7147 | *rc = fan_set_disable(); |
7148 | if (*rc == -ENXIO) | |
e0c7dfe7 | 7149 | printk(TPACPI_ERR "disable command accepted for unsupported " |
18ad7996 | 7150 | "access mode %d", fan_control_access_mode); |
74a60c0f HMH |
7151 | else if (!*rc) |
7152 | tpacpi_disclose_usertask("procfs fan", "disable\n"); | |
18ad7996 HMH |
7153 | |
7154 | return 1; | |
7155 | } | |
7156 | ||
7157 | static int fan_write_cmd_speed(const char *cmd, int *rc) | |
7158 | { | |
7159 | int speed; | |
7160 | ||
a8b7a662 HMH |
7161 | /* TODO: |
7162 | * Support speed <low> <medium> <high> ? */ | |
7163 | ||
18ad7996 HMH |
7164 | if (sscanf(cmd, "speed %d", &speed) != 1) |
7165 | return 0; | |
7166 | ||
35ff8b9f HMH |
7167 | *rc = fan_set_speed(speed); |
7168 | if (*rc == -ENXIO) | |
e0c7dfe7 | 7169 | printk(TPACPI_ERR "speed command accepted for unsupported " |
18ad7996 | 7170 | "access mode %d", fan_control_access_mode); |
74a60c0f HMH |
7171 | else if (!*rc) |
7172 | tpacpi_disclose_usertask("procfs fan", | |
7173 | "set speed to %d\n", speed); | |
18ad7996 HMH |
7174 | |
7175 | return 1; | |
7176 | } | |
7177 | ||
16663a87 HMH |
7178 | static int fan_write_cmd_watchdog(const char *cmd, int *rc) |
7179 | { | |
7180 | int interval; | |
7181 | ||
7182 | if (sscanf(cmd, "watchdog %d", &interval) != 1) | |
7183 | return 0; | |
7184 | ||
7185 | if (interval < 0 || interval > 120) | |
7186 | *rc = -EINVAL; | |
74a60c0f | 7187 | else { |
16663a87 | 7188 | fan_watchdog_maxinterval = interval; |
74a60c0f HMH |
7189 | tpacpi_disclose_usertask("procfs fan", |
7190 | "set watchdog timer to %d\n", | |
7191 | interval); | |
7192 | } | |
16663a87 HMH |
7193 | |
7194 | return 1; | |
7195 | } | |
7196 | ||
18ad7996 HMH |
7197 | static int fan_write(char *buf) |
7198 | { | |
7199 | char *cmd; | |
7200 | int rc = 0; | |
7201 | ||
7202 | while (!rc && (cmd = next_cmd(&buf))) { | |
efa27145 | 7203 | if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && |
18ad7996 | 7204 | fan_write_cmd_level(cmd, &rc)) && |
efa27145 | 7205 | !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && |
18ad7996 | 7206 | (fan_write_cmd_enable(cmd, &rc) || |
16663a87 HMH |
7207 | fan_write_cmd_disable(cmd, &rc) || |
7208 | fan_write_cmd_watchdog(cmd, &rc))) && | |
efa27145 | 7209 | !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && |
18ad7996 HMH |
7210 | fan_write_cmd_speed(cmd, &rc)) |
7211 | ) | |
7212 | rc = -EINVAL; | |
16663a87 HMH |
7213 | else if (!rc) |
7214 | fan_watchdog_reset(); | |
18ad7996 HMH |
7215 | } |
7216 | ||
7217 | return rc; | |
7218 | } | |
7219 | ||
a5763f22 HMH |
7220 | static struct ibm_struct fan_driver_data = { |
7221 | .name = "fan", | |
7222 | .read = fan_read, | |
7223 | .write = fan_write, | |
7224 | .exit = fan_exit, | |
75700e53 HMH |
7225 | .suspend = fan_suspend, |
7226 | .resume = fan_resume, | |
a5763f22 HMH |
7227 | }; |
7228 | ||
56b6aeb0 HMH |
7229 | /**************************************************************************** |
7230 | **************************************************************************** | |
7231 | * | |
7232 | * Infrastructure | |
7233 | * | |
7234 | **************************************************************************** | |
7235 | ****************************************************************************/ | |
7236 | ||
7fd40029 HMH |
7237 | /* sysfs name ---------------------------------------------------------- */ |
7238 | static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev, | |
7239 | struct device_attribute *attr, | |
7240 | char *buf) | |
7241 | { | |
e0c7dfe7 | 7242 | return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME); |
7fd40029 HMH |
7243 | } |
7244 | ||
7245 | static struct device_attribute dev_attr_thinkpad_acpi_pdev_name = | |
7246 | __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL); | |
7247 | ||
7248 | /* --------------------------------------------------------------------- */ | |
7249 | ||
56b6aeb0 | 7250 | /* /proc support */ |
94954cc6 | 7251 | static struct proc_dir_entry *proc_dir; |
16663a87 | 7252 | |
56b6aeb0 HMH |
7253 | /* |
7254 | * Module and infrastructure proble, init and exit handling | |
7255 | */ | |
1da177e4 | 7256 | |
b21a15f6 HMH |
7257 | static int force_load; |
7258 | ||
fe08bc4b | 7259 | #ifdef CONFIG_THINKPAD_ACPI_DEBUG |
a5763f22 | 7260 | static const char * __init str_supported(int is_supported) |
fe08bc4b | 7261 | { |
a5763f22 | 7262 | static char text_unsupported[] __initdata = "not supported"; |
fe08bc4b | 7263 | |
a5763f22 | 7264 | return (is_supported)? &text_unsupported[4] : &text_unsupported[0]; |
fe08bc4b HMH |
7265 | } |
7266 | #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ | |
7267 | ||
b21a15f6 HMH |
7268 | static void ibm_exit(struct ibm_struct *ibm) |
7269 | { | |
7270 | dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); | |
7271 | ||
7272 | list_del_init(&ibm->all_drivers); | |
7273 | ||
7274 | if (ibm->flags.acpi_notify_installed) { | |
7275 | dbg_printk(TPACPI_DBG_EXIT, | |
7276 | "%s: acpi_remove_notify_handler\n", ibm->name); | |
7277 | BUG_ON(!ibm->acpi); | |
7278 | acpi_remove_notify_handler(*ibm->acpi->handle, | |
7279 | ibm->acpi->type, | |
7280 | dispatch_acpi_notify); | |
7281 | ibm->flags.acpi_notify_installed = 0; | |
7282 | ibm->flags.acpi_notify_installed = 0; | |
7283 | } | |
7284 | ||
7285 | if (ibm->flags.proc_created) { | |
7286 | dbg_printk(TPACPI_DBG_EXIT, | |
7287 | "%s: remove_proc_entry\n", ibm->name); | |
7288 | remove_proc_entry(ibm->name, proc_dir); | |
7289 | ibm->flags.proc_created = 0; | |
7290 | } | |
7291 | ||
7292 | if (ibm->flags.acpi_driver_registered) { | |
7293 | dbg_printk(TPACPI_DBG_EXIT, | |
7294 | "%s: acpi_bus_unregister_driver\n", ibm->name); | |
7295 | BUG_ON(!ibm->acpi); | |
7296 | acpi_bus_unregister_driver(ibm->acpi->driver); | |
7297 | kfree(ibm->acpi->driver); | |
7298 | ibm->acpi->driver = NULL; | |
7299 | ibm->flags.acpi_driver_registered = 0; | |
7300 | } | |
7301 | ||
7302 | if (ibm->flags.init_called && ibm->exit) { | |
7303 | ibm->exit(); | |
7304 | ibm->flags.init_called = 0; | |
7305 | } | |
7306 | ||
7307 | dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); | |
7308 | } | |
f74a27d4 | 7309 | |
a5763f22 | 7310 | static int __init ibm_init(struct ibm_init_struct *iibm) |
1da177e4 LT |
7311 | { |
7312 | int ret; | |
a5763f22 | 7313 | struct ibm_struct *ibm = iibm->data; |
1da177e4 LT |
7314 | struct proc_dir_entry *entry; |
7315 | ||
a5763f22 HMH |
7316 | BUG_ON(ibm == NULL); |
7317 | ||
7318 | INIT_LIST_HEAD(&ibm->all_drivers); | |
7319 | ||
92641177 | 7320 | if (ibm->flags.experimental && !experimental) |
1da177e4 LT |
7321 | return 0; |
7322 | ||
fe08bc4b HMH |
7323 | dbg_printk(TPACPI_DBG_INIT, |
7324 | "probing for %s\n", ibm->name); | |
7325 | ||
a5763f22 HMH |
7326 | if (iibm->init) { |
7327 | ret = iibm->init(iibm); | |
5fba344c HMH |
7328 | if (ret > 0) |
7329 | return 0; /* probe failed */ | |
7330 | if (ret) | |
1da177e4 | 7331 | return ret; |
a5763f22 | 7332 | |
92641177 | 7333 | ibm->flags.init_called = 1; |
1da177e4 LT |
7334 | } |
7335 | ||
8d376cd6 HMH |
7336 | if (ibm->acpi) { |
7337 | if (ibm->acpi->hid) { | |
7338 | ret = register_tpacpi_subdriver(ibm); | |
7339 | if (ret) | |
7340 | goto err_out; | |
7341 | } | |
5fba344c | 7342 | |
8d376cd6 HMH |
7343 | if (ibm->acpi->notify) { |
7344 | ret = setup_acpi_notify(ibm); | |
7345 | if (ret == -ENODEV) { | |
e0c7dfe7 | 7346 | printk(TPACPI_NOTICE "disabling subdriver %s\n", |
8d376cd6 HMH |
7347 | ibm->name); |
7348 | ret = 0; | |
7349 | goto err_out; | |
7350 | } | |
7351 | if (ret < 0) | |
7352 | goto err_out; | |
5fba344c | 7353 | } |
5fba344c HMH |
7354 | } |
7355 | ||
fe08bc4b HMH |
7356 | dbg_printk(TPACPI_DBG_INIT, |
7357 | "%s installed\n", ibm->name); | |
7358 | ||
78f81cc4 BD |
7359 | if (ibm->read) { |
7360 | entry = create_proc_entry(ibm->name, | |
7361 | S_IFREG | S_IRUGO | S_IWUSR, | |
7362 | proc_dir); | |
7363 | if (!entry) { | |
e0c7dfe7 | 7364 | printk(TPACPI_ERR "unable to create proc entry %s\n", |
78f81cc4 | 7365 | ibm->name); |
5fba344c HMH |
7366 | ret = -ENODEV; |
7367 | goto err_out; | |
78f81cc4 | 7368 | } |
78f81cc4 | 7369 | entry->data = ibm; |
8d376cd6 | 7370 | entry->read_proc = &dispatch_procfs_read; |
78f81cc4 | 7371 | if (ibm->write) |
8d376cd6 | 7372 | entry->write_proc = &dispatch_procfs_write; |
92641177 | 7373 | ibm->flags.proc_created = 1; |
78f81cc4 | 7374 | } |
1da177e4 | 7375 | |
a5763f22 HMH |
7376 | list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); |
7377 | ||
1da177e4 | 7378 | return 0; |
5fba344c HMH |
7379 | |
7380 | err_out: | |
fe08bc4b HMH |
7381 | dbg_printk(TPACPI_DBG_INIT, |
7382 | "%s: at error exit path with result %d\n", | |
7383 | ibm->name, ret); | |
7384 | ||
5fba344c HMH |
7385 | ibm_exit(ibm); |
7386 | return (ret < 0)? ret : 0; | |
1da177e4 LT |
7387 | } |
7388 | ||
56b6aeb0 HMH |
7389 | /* Probing */ |
7390 | ||
bf20e740 HMH |
7391 | /* returns 0 - probe ok, or < 0 - probe error. |
7392 | * Probe ok doesn't mean thinkpad found. | |
7393 | * On error, kfree() cleanup on tp->* is not performed, caller must do it */ | |
7394 | static int __must_check __init get_thinkpad_model_data( | |
7395 | struct thinkpad_id_data *tp) | |
1da177e4 | 7396 | { |
1855256c | 7397 | const struct dmi_device *dev = NULL; |
56b6aeb0 | 7398 | char ec_fw_string[18]; |
bf20e740 | 7399 | char const *s; |
1da177e4 | 7400 | |
d5a2f2f1 | 7401 | if (!tp) |
bf20e740 | 7402 | return -EINVAL; |
d5a2f2f1 HMH |
7403 | |
7404 | memset(tp, 0, sizeof(*tp)); | |
7405 | ||
7406 | if (dmi_name_in_vendors("IBM")) | |
7407 | tp->vendor = PCI_VENDOR_ID_IBM; | |
7408 | else if (dmi_name_in_vendors("LENOVO")) | |
7409 | tp->vendor = PCI_VENDOR_ID_LENOVO; | |
7410 | else | |
bf20e740 | 7411 | return 0; |
d5a2f2f1 | 7412 | |
bf20e740 HMH |
7413 | s = dmi_get_system_info(DMI_BIOS_VERSION); |
7414 | tp->bios_version_str = kstrdup(s, GFP_KERNEL); | |
7415 | if (s && !tp->bios_version_str) | |
7416 | return -ENOMEM; | |
d5a2f2f1 | 7417 | if (!tp->bios_version_str) |
bf20e740 | 7418 | return 0; |
d5a2f2f1 HMH |
7419 | tp->bios_model = tp->bios_version_str[0] |
7420 | | (tp->bios_version_str[1] << 8); | |
7421 | ||
56b6aeb0 HMH |
7422 | /* |
7423 | * ThinkPad T23 or newer, A31 or newer, R50e or newer, | |
7424 | * X32 or newer, all Z series; Some models must have an | |
7425 | * up-to-date BIOS or they will not be detected. | |
7426 | * | |
7427 | * See http://thinkwiki.org/wiki/List_of_DMI_IDs | |
7428 | */ | |
7429 | while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { | |
7430 | if (sscanf(dev->name, | |
7431 | "IBM ThinkPad Embedded Controller -[%17c", | |
7432 | ec_fw_string) == 1) { | |
7433 | ec_fw_string[sizeof(ec_fw_string) - 1] = 0; | |
7434 | ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; | |
d5a2f2f1 HMH |
7435 | |
7436 | tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); | |
bf20e740 HMH |
7437 | if (!tp->ec_version_str) |
7438 | return -ENOMEM; | |
d5a2f2f1 HMH |
7439 | tp->ec_model = ec_fw_string[0] |
7440 | | (ec_fw_string[1] << 8); | |
7441 | break; | |
78f81cc4 | 7442 | } |
1da177e4 | 7443 | } |
d5a2f2f1 | 7444 | |
bf20e740 HMH |
7445 | s = dmi_get_system_info(DMI_PRODUCT_VERSION); |
7446 | if (s && !strnicmp(s, "ThinkPad", 8)) { | |
7447 | tp->model_str = kstrdup(s, GFP_KERNEL); | |
7448 | if (!tp->model_str) | |
7449 | return -ENOMEM; | |
d5a2f2f1 | 7450 | } |
8c74adbc | 7451 | |
bf20e740 HMH |
7452 | s = dmi_get_system_info(DMI_PRODUCT_NAME); |
7453 | tp->nummodel_str = kstrdup(s, GFP_KERNEL); | |
7454 | if (s && !tp->nummodel_str) | |
7455 | return -ENOMEM; | |
7456 | ||
7457 | return 0; | |
1da177e4 LT |
7458 | } |
7459 | ||
5fba344c HMH |
7460 | static int __init probe_for_thinkpad(void) |
7461 | { | |
7462 | int is_thinkpad; | |
7463 | ||
7464 | if (acpi_disabled) | |
7465 | return -ENODEV; | |
7466 | ||
7467 | /* | |
7468 | * Non-ancient models have better DMI tagging, but very old models | |
7469 | * don't. | |
7470 | */ | |
d5a2f2f1 | 7471 | is_thinkpad = (thinkpad_id.model_str != NULL); |
5fba344c HMH |
7472 | |
7473 | /* ec is required because many other handles are relative to it */ | |
e0c7dfe7 | 7474 | TPACPI_ACPIHANDLE_INIT(ec); |
5fba344c HMH |
7475 | if (!ec_handle) { |
7476 | if (is_thinkpad) | |
e0c7dfe7 | 7477 | printk(TPACPI_ERR |
5fba344c HMH |
7478 | "Not yet supported ThinkPad detected!\n"); |
7479 | return -ENODEV; | |
7480 | } | |
7481 | ||
0dcef77c HMH |
7482 | /* |
7483 | * Risks a regression on very old machines, but reduces potential | |
7484 | * false positives a damn great deal | |
7485 | */ | |
7486 | if (!is_thinkpad) | |
d5a2f2f1 | 7487 | is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM); |
0dcef77c HMH |
7488 | |
7489 | if (!is_thinkpad && !force_load) | |
7490 | return -ENODEV; | |
7491 | ||
5fba344c HMH |
7492 | return 0; |
7493 | } | |
7494 | ||
7495 | ||
56b6aeb0 | 7496 | /* Module init, exit, parameters */ |
1da177e4 | 7497 | |
a5763f22 HMH |
7498 | static struct ibm_init_struct ibms_init[] __initdata = { |
7499 | { | |
7500 | .init = thinkpad_acpi_driver_init, | |
7501 | .data = &thinkpad_acpi_driver_data, | |
7502 | }, | |
7503 | { | |
7504 | .init = hotkey_init, | |
7505 | .data = &hotkey_driver_data, | |
7506 | }, | |
7507 | { | |
7508 | .init = bluetooth_init, | |
7509 | .data = &bluetooth_driver_data, | |
7510 | }, | |
7511 | { | |
7512 | .init = wan_init, | |
7513 | .data = &wan_driver_data, | |
7514 | }, | |
0045c0aa HMH |
7515 | { |
7516 | .init = uwb_init, | |
7517 | .data = &uwb_driver_data, | |
7518 | }, | |
d7c1d17d | 7519 | #ifdef CONFIG_THINKPAD_ACPI_VIDEO |
a5763f22 HMH |
7520 | { |
7521 | .init = video_init, | |
7522 | .data = &video_driver_data, | |
7523 | }, | |
d7c1d17d | 7524 | #endif |
a5763f22 HMH |
7525 | { |
7526 | .init = light_init, | |
7527 | .data = &light_driver_data, | |
7528 | }, | |
7529 | #ifdef CONFIG_THINKPAD_ACPI_DOCK | |
7530 | { | |
7531 | .init = dock_init, | |
7532 | .data = &dock_driver_data[0], | |
7533 | }, | |
7534 | { | |
d94a7f16 | 7535 | .init = dock_init2, |
a5763f22 HMH |
7536 | .data = &dock_driver_data[1], |
7537 | }, | |
7538 | #endif | |
7539 | #ifdef CONFIG_THINKPAD_ACPI_BAY | |
7540 | { | |
7541 | .init = bay_init, | |
7542 | .data = &bay_driver_data, | |
7543 | }, | |
7544 | #endif | |
7545 | { | |
7546 | .init = cmos_init, | |
7547 | .data = &cmos_driver_data, | |
7548 | }, | |
7549 | { | |
7550 | .init = led_init, | |
7551 | .data = &led_driver_data, | |
7552 | }, | |
7553 | { | |
7554 | .init = beep_init, | |
7555 | .data = &beep_driver_data, | |
7556 | }, | |
7557 | { | |
7558 | .init = thermal_init, | |
7559 | .data = &thermal_driver_data, | |
7560 | }, | |
7561 | { | |
7562 | .data = &ecdump_driver_data, | |
7563 | }, | |
7564 | { | |
7565 | .init = brightness_init, | |
7566 | .data = &brightness_driver_data, | |
7567 | }, | |
7568 | { | |
7569 | .data = &volume_driver_data, | |
7570 | }, | |
7571 | { | |
7572 | .init = fan_init, | |
7573 | .data = &fan_driver_data, | |
7574 | }, | |
7575 | }; | |
7576 | ||
3945ac36 | 7577 | static int __init set_ibm_param(const char *val, struct kernel_param *kp) |
1da177e4 LT |
7578 | { |
7579 | unsigned int i; | |
a5763f22 | 7580 | struct ibm_struct *ibm; |
1da177e4 | 7581 | |
59f91ff1 HMH |
7582 | if (!kp || !kp->name || !val) |
7583 | return -EINVAL; | |
7584 | ||
a5763f22 HMH |
7585 | for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { |
7586 | ibm = ibms_init[i].data; | |
59f91ff1 HMH |
7587 | WARN_ON(ibm == NULL); |
7588 | ||
7589 | if (!ibm || !ibm->name) | |
7590 | continue; | |
a5763f22 HMH |
7591 | |
7592 | if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { | |
7593 | if (strlen(val) > sizeof(ibms_init[i].param) - 2) | |
78f81cc4 | 7594 | return -ENOSPC; |
a5763f22 HMH |
7595 | strcpy(ibms_init[i].param, val); |
7596 | strcat(ibms_init[i].param, ","); | |
78f81cc4 BD |
7597 | return 0; |
7598 | } | |
a5763f22 | 7599 | } |
1da177e4 | 7600 | |
1da177e4 LT |
7601 | return -EINVAL; |
7602 | } | |
7603 | ||
56b6aeb0 | 7604 | module_param(experimental, int, 0); |
f68080f8 | 7605 | MODULE_PARM_DESC(experimental, |
35ff8b9f | 7606 | "Enables experimental features when non-zero"); |
56b6aeb0 | 7607 | |
132ce091 | 7608 | module_param_named(debug, dbg_level, uint, 0); |
f68080f8 | 7609 | MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); |
132ce091 | 7610 | |
86cc9445 | 7611 | module_param(force_load, bool, 0); |
f68080f8 | 7612 | MODULE_PARM_DESC(force_load, |
35ff8b9f HMH |
7613 | "Attempts to load the driver even on a " |
7614 | "mis-identified ThinkPad when true"); | |
0dcef77c | 7615 | |
86cc9445 | 7616 | module_param_named(fan_control, fan_control_allowed, bool, 0); |
f68080f8 | 7617 | MODULE_PARM_DESC(fan_control, |
35ff8b9f | 7618 | "Enables setting fan parameters features when true"); |
ecf2a80a | 7619 | |
0e501834 | 7620 | module_param_named(brightness_mode, brightness_mode, uint, 0); |
f68080f8 | 7621 | MODULE_PARM_DESC(brightness_mode, |
35ff8b9f | 7622 | "Selects brightness control strategy: " |
0e501834 | 7623 | "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM"); |
24d3b774 | 7624 | |
87cc537a | 7625 | module_param(brightness_enable, uint, 0); |
f68080f8 | 7626 | MODULE_PARM_DESC(brightness_enable, |
35ff8b9f | 7627 | "Enables backlight control when 1, disables when 0"); |
87cc537a | 7628 | |
ff80f137 | 7629 | module_param(hotkey_report_mode, uint, 0); |
f68080f8 | 7630 | MODULE_PARM_DESC(hotkey_report_mode, |
35ff8b9f HMH |
7631 | "used for backwards compatibility with userspace, " |
7632 | "see documentation"); | |
ff80f137 | 7633 | |
e0c7dfe7 | 7634 | #define TPACPI_PARAM(feature) \ |
f68080f8 | 7635 | module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ |
cbb14842 | 7636 | MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \ |
35ff8b9f | 7637 | "at module load, see documentation") |
1da177e4 | 7638 | |
e0c7dfe7 HMH |
7639 | TPACPI_PARAM(hotkey); |
7640 | TPACPI_PARAM(bluetooth); | |
7641 | TPACPI_PARAM(video); | |
7642 | TPACPI_PARAM(light); | |
85998248 | 7643 | #ifdef CONFIG_THINKPAD_ACPI_DOCK |
e0c7dfe7 | 7644 | TPACPI_PARAM(dock); |
63e5f248 | 7645 | #endif |
85998248 | 7646 | #ifdef CONFIG_THINKPAD_ACPI_BAY |
e0c7dfe7 | 7647 | TPACPI_PARAM(bay); |
85998248 | 7648 | #endif /* CONFIG_THINKPAD_ACPI_BAY */ |
e0c7dfe7 HMH |
7649 | TPACPI_PARAM(cmos); |
7650 | TPACPI_PARAM(led); | |
7651 | TPACPI_PARAM(beep); | |
7652 | TPACPI_PARAM(ecdump); | |
7653 | TPACPI_PARAM(brightness); | |
7654 | TPACPI_PARAM(volume); | |
7655 | TPACPI_PARAM(fan); | |
78f81cc4 | 7656 | |
a73f3091 HMH |
7657 | #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
7658 | module_param(dbg_wlswemul, uint, 0); | |
7659 | MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation"); | |
7660 | module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0); | |
7661 | MODULE_PARM_DESC(wlsw_state, | |
7662 | "Initial state of the emulated WLSW switch"); | |
7663 | ||
7664 | module_param(dbg_bluetoothemul, uint, 0); | |
7665 | MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation"); | |
7666 | module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0); | |
7667 | MODULE_PARM_DESC(bluetooth_state, | |
7668 | "Initial state of the emulated bluetooth switch"); | |
7669 | ||
7670 | module_param(dbg_wwanemul, uint, 0); | |
7671 | MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation"); | |
7672 | module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0); | |
7673 | MODULE_PARM_DESC(wwan_state, | |
7674 | "Initial state of the emulated WWAN switch"); | |
0045c0aa HMH |
7675 | |
7676 | module_param(dbg_uwbemul, uint, 0); | |
7677 | MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation"); | |
7678 | module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0); | |
7679 | MODULE_PARM_DESC(uwb_state, | |
7680 | "Initial state of the emulated UWB switch"); | |
a73f3091 HMH |
7681 | #endif |
7682 | ||
b21a15f6 HMH |
7683 | static void thinkpad_acpi_module_exit(void) |
7684 | { | |
7685 | struct ibm_struct *ibm, *itmp; | |
7686 | ||
7687 | tpacpi_lifecycle = TPACPI_LIFE_EXITING; | |
7688 | ||
7689 | list_for_each_entry_safe_reverse(ibm, itmp, | |
7690 | &tpacpi_all_drivers, | |
7691 | all_drivers) { | |
7692 | ibm_exit(ibm); | |
7693 | } | |
7694 | ||
7695 | dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); | |
7696 | ||
7697 | if (tpacpi_inputdev) { | |
7698 | if (tp_features.input_device_registered) | |
7699 | input_unregister_device(tpacpi_inputdev); | |
7700 | else | |
7701 | input_free_device(tpacpi_inputdev); | |
7702 | } | |
7703 | ||
7704 | if (tpacpi_hwmon) | |
7705 | hwmon_device_unregister(tpacpi_hwmon); | |
7706 | ||
7707 | if (tp_features.sensors_pdev_attrs_registered) | |
7708 | device_remove_file(&tpacpi_sensors_pdev->dev, | |
7709 | &dev_attr_thinkpad_acpi_pdev_name); | |
7710 | if (tpacpi_sensors_pdev) | |
7711 | platform_device_unregister(tpacpi_sensors_pdev); | |
7712 | if (tpacpi_pdev) | |
7713 | platform_device_unregister(tpacpi_pdev); | |
7714 | ||
7715 | if (tp_features.sensors_pdrv_attrs_registered) | |
7716 | tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver); | |
7717 | if (tp_features.platform_drv_attrs_registered) | |
7718 | tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver); | |
7719 | ||
7720 | if (tp_features.sensors_pdrv_registered) | |
7721 | platform_driver_unregister(&tpacpi_hwmon_pdriver); | |
7722 | ||
7723 | if (tp_features.platform_drv_registered) | |
7724 | platform_driver_unregister(&tpacpi_pdriver); | |
7725 | ||
7726 | if (proc_dir) | |
e0c7dfe7 | 7727 | remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); |
b21a15f6 | 7728 | |
e0e3c061 HMH |
7729 | if (tpacpi_wq) |
7730 | destroy_workqueue(tpacpi_wq); | |
7731 | ||
b21a15f6 HMH |
7732 | kfree(thinkpad_id.bios_version_str); |
7733 | kfree(thinkpad_id.ec_version_str); | |
7734 | kfree(thinkpad_id.model_str); | |
7735 | } | |
7736 | ||
f74a27d4 | 7737 | |
1def7115 | 7738 | static int __init thinkpad_acpi_module_init(void) |
1da177e4 LT |
7739 | { |
7740 | int ret, i; | |
7741 | ||
8fef502e HMH |
7742 | tpacpi_lifecycle = TPACPI_LIFE_INIT; |
7743 | ||
ff80f137 HMH |
7744 | /* Parameter checking */ |
7745 | if (hotkey_report_mode > 2) | |
7746 | return -EINVAL; | |
7747 | ||
54ae1501 | 7748 | /* Driver-level probe */ |
d5a2f2f1 | 7749 | |
bf20e740 HMH |
7750 | ret = get_thinkpad_model_data(&thinkpad_id); |
7751 | if (ret) { | |
7752 | printk(TPACPI_ERR | |
7753 | "unable to get DMI data: %d\n", ret); | |
7754 | thinkpad_acpi_module_exit(); | |
7755 | return ret; | |
7756 | } | |
5fba344c | 7757 | ret = probe_for_thinkpad(); |
d5a2f2f1 HMH |
7758 | if (ret) { |
7759 | thinkpad_acpi_module_exit(); | |
5fba344c | 7760 | return ret; |
d5a2f2f1 | 7761 | } |
1da177e4 | 7762 | |
54ae1501 | 7763 | /* Driver initialization */ |
d5a2f2f1 | 7764 | |
e0c7dfe7 HMH |
7765 | TPACPI_ACPIHANDLE_INIT(ecrd); |
7766 | TPACPI_ACPIHANDLE_INIT(ecwr); | |
1da177e4 | 7767 | |
e0e3c061 HMH |
7768 | tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); |
7769 | if (!tpacpi_wq) { | |
7770 | thinkpad_acpi_module_exit(); | |
7771 | return -ENOMEM; | |
7772 | } | |
7773 | ||
e0c7dfe7 | 7774 | proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); |
1da177e4 | 7775 | if (!proc_dir) { |
35ff8b9f HMH |
7776 | printk(TPACPI_ERR |
7777 | "unable to create proc dir " TPACPI_PROC_DIR); | |
1def7115 | 7778 | thinkpad_acpi_module_exit(); |
1da177e4 LT |
7779 | return -ENODEV; |
7780 | } | |
78f81cc4 | 7781 | |
54ae1501 HMH |
7782 | ret = platform_driver_register(&tpacpi_pdriver); |
7783 | if (ret) { | |
35ff8b9f HMH |
7784 | printk(TPACPI_ERR |
7785 | "unable to register main platform driver\n"); | |
54ae1501 HMH |
7786 | thinkpad_acpi_module_exit(); |
7787 | return ret; | |
7788 | } | |
ac36393d HMH |
7789 | tp_features.platform_drv_registered = 1; |
7790 | ||
7fd40029 HMH |
7791 | ret = platform_driver_register(&tpacpi_hwmon_pdriver); |
7792 | if (ret) { | |
35ff8b9f HMH |
7793 | printk(TPACPI_ERR |
7794 | "unable to register hwmon platform driver\n"); | |
7fd40029 HMH |
7795 | thinkpad_acpi_module_exit(); |
7796 | return ret; | |
7797 | } | |
7798 | tp_features.sensors_pdrv_registered = 1; | |
7799 | ||
176750d6 | 7800 | ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver); |
2369cc94 HMH |
7801 | if (!ret) { |
7802 | tp_features.platform_drv_attrs_registered = 1; | |
35ff8b9f HMH |
7803 | ret = tpacpi_create_driver_attributes( |
7804 | &tpacpi_hwmon_pdriver.driver); | |
2369cc94 | 7805 | } |
176750d6 | 7806 | if (ret) { |
35ff8b9f HMH |
7807 | printk(TPACPI_ERR |
7808 | "unable to create sysfs driver attributes\n"); | |
176750d6 HMH |
7809 | thinkpad_acpi_module_exit(); |
7810 | return ret; | |
7811 | } | |
2369cc94 | 7812 | tp_features.sensors_pdrv_attrs_registered = 1; |
176750d6 | 7813 | |
54ae1501 HMH |
7814 | |
7815 | /* Device initialization */ | |
e0c7dfe7 | 7816 | tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1, |
54ae1501 HMH |
7817 | NULL, 0); |
7818 | if (IS_ERR(tpacpi_pdev)) { | |
7819 | ret = PTR_ERR(tpacpi_pdev); | |
7820 | tpacpi_pdev = NULL; | |
e0c7dfe7 | 7821 | printk(TPACPI_ERR "unable to register platform device\n"); |
54ae1501 HMH |
7822 | thinkpad_acpi_module_exit(); |
7823 | return ret; | |
7824 | } | |
7fd40029 | 7825 | tpacpi_sensors_pdev = platform_device_register_simple( |
35ff8b9f HMH |
7826 | TPACPI_HWMON_DRVR_NAME, |
7827 | -1, NULL, 0); | |
7fd40029 HMH |
7828 | if (IS_ERR(tpacpi_sensors_pdev)) { |
7829 | ret = PTR_ERR(tpacpi_sensors_pdev); | |
7830 | tpacpi_sensors_pdev = NULL; | |
35ff8b9f HMH |
7831 | printk(TPACPI_ERR |
7832 | "unable to register hwmon platform device\n"); | |
7fd40029 HMH |
7833 | thinkpad_acpi_module_exit(); |
7834 | return ret; | |
7835 | } | |
7836 | ret = device_create_file(&tpacpi_sensors_pdev->dev, | |
7837 | &dev_attr_thinkpad_acpi_pdev_name); | |
7838 | if (ret) { | |
e0c7dfe7 | 7839 | printk(TPACPI_ERR |
35ff8b9f | 7840 | "unable to create sysfs hwmon device attributes\n"); |
7fd40029 HMH |
7841 | thinkpad_acpi_module_exit(); |
7842 | return ret; | |
7843 | } | |
7844 | tp_features.sensors_pdev_attrs_registered = 1; | |
7845 | tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev); | |
54ae1501 HMH |
7846 | if (IS_ERR(tpacpi_hwmon)) { |
7847 | ret = PTR_ERR(tpacpi_hwmon); | |
7848 | tpacpi_hwmon = NULL; | |
e0c7dfe7 | 7849 | printk(TPACPI_ERR "unable to register hwmon device\n"); |
54ae1501 HMH |
7850 | thinkpad_acpi_module_exit(); |
7851 | return ret; | |
7852 | } | |
8523ed6f | 7853 | mutex_init(&tpacpi_inputdev_send_mutex); |
7f5d1cd6 HMH |
7854 | tpacpi_inputdev = input_allocate_device(); |
7855 | if (!tpacpi_inputdev) { | |
e0c7dfe7 | 7856 | printk(TPACPI_ERR "unable to allocate input device\n"); |
7f5d1cd6 HMH |
7857 | thinkpad_acpi_module_exit(); |
7858 | return -ENOMEM; | |
7859 | } else { | |
7860 | /* Prepare input device, but don't register */ | |
7861 | tpacpi_inputdev->name = "ThinkPad Extra Buttons"; | |
e0c7dfe7 | 7862 | tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; |
7f5d1cd6 | 7863 | tpacpi_inputdev->id.bustype = BUS_HOST; |
edf0e0e5 HMH |
7864 | tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ? |
7865 | thinkpad_id.vendor : | |
7866 | PCI_VENDOR_ID_IBM; | |
7f5d1cd6 HMH |
7867 | tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; |
7868 | tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; | |
7869 | } | |
a5763f22 HMH |
7870 | for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { |
7871 | ret = ibm_init(&ibms_init[i]); | |
7872 | if (ret >= 0 && *ibms_init[i].param) | |
7873 | ret = ibms_init[i].data->write(ibms_init[i].param); | |
1da177e4 | 7874 | if (ret < 0) { |
1def7115 | 7875 | thinkpad_acpi_module_exit(); |
1da177e4 LT |
7876 | return ret; |
7877 | } | |
7878 | } | |
7f5d1cd6 HMH |
7879 | ret = input_register_device(tpacpi_inputdev); |
7880 | if (ret < 0) { | |
e0c7dfe7 | 7881 | printk(TPACPI_ERR "unable to register input device\n"); |
7f5d1cd6 HMH |
7882 | thinkpad_acpi_module_exit(); |
7883 | return ret; | |
7884 | } else { | |
7885 | tp_features.input_device_registered = 1; | |
7886 | } | |
1da177e4 | 7887 | |
8fef502e | 7888 | tpacpi_lifecycle = TPACPI_LIFE_RUNNING; |
1da177e4 LT |
7889 | return 0; |
7890 | } | |
7891 | ||
95e57ab2 HMH |
7892 | MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); |
7893 | ||
922fe097 HMH |
7894 | /* |
7895 | * This will autoload the driver in almost every ThinkPad | |
7896 | * in widespread use. | |
7897 | * | |
7898 | * Only _VERY_ old models, like the 240, 240x and 570 lack | |
7899 | * the HKEY event interface. | |
7900 | */ | |
7901 | MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids); | |
7902 | ||
f68080f8 HMH |
7903 | /* |
7904 | * DMI matching for module autoloading | |
7905 | * | |
7906 | * See http://thinkwiki.org/wiki/List_of_DMI_IDs | |
7907 | * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads | |
7908 | * | |
7909 | * Only models listed in thinkwiki will be supported, so add yours | |
7910 | * if it is not there yet. | |
7911 | */ | |
7912 | #define IBM_BIOS_MODULE_ALIAS(__type) \ | |
b36a50f9 | 7913 | MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*") |
f68080f8 | 7914 | |
f68080f8 HMH |
7915 | /* Ancient thinkpad BIOSes have to be identified by |
7916 | * BIOS type or model number, and there are far less | |
7917 | * BIOS types than model numbers... */ | |
922fe097 | 7918 | IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */ |
f68080f8 | 7919 | |
f68f53a2 HMH |
7920 | MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>"); |
7921 | MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>"); | |
e0c7dfe7 HMH |
7922 | MODULE_DESCRIPTION(TPACPI_DESC); |
7923 | MODULE_VERSION(TPACPI_VERSION); | |
f68080f8 HMH |
7924 | MODULE_LICENSE("GPL"); |
7925 | ||
1def7115 HMH |
7926 | module_init(thinkpad_acpi_module_init); |
7927 | module_exit(thinkpad_acpi_module_exit); |