Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * toshiba_acpi.c - Toshiba Laptop ACPI Extras | |
3 | * | |
4 | * | |
5 | * Copyright (C) 2002-2004 John Belmonte | |
c41a40c5 | 6 | * Copyright (C) 2008 Philip Langdale |
6c3f6e6c | 7 | * Copyright (C) 2010 Pierre Ducroquet |
1da177e4 LT |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | * | |
23 | * | |
24 | * The devolpment page for this driver is located at | |
25 | * http://memebeam.org/toys/ToshibaAcpiDriver. | |
26 | * | |
27 | * Credits: | |
28 | * Jonathan A. Buzzard - Toshiba HCI info, and critical tips on reverse | |
29 | * engineering the Windows drivers | |
30 | * Yasushi Nagato - changes for linux kernel 2.4 -> 2.5 | |
31 | * Rob Miller - TV out and hotkeys help | |
32 | * | |
33 | * | |
34 | * TODO | |
35 | * | |
36 | */ | |
37 | ||
7e33460d JP |
38 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
39 | ||
c41a40c5 | 40 | #define TOSHIBA_ACPI_VERSION "0.19" |
1da177e4 LT |
41 | #define PROC_INTERFACE_VERSION 1 |
42 | ||
43 | #include <linux/kernel.h> | |
44 | #include <linux/module.h> | |
45 | #include <linux/init.h> | |
46 | #include <linux/types.h> | |
47 | #include <linux/proc_fs.h> | |
936c8bcd | 48 | #include <linux/seq_file.h> |
c9263557 | 49 | #include <linux/backlight.h> |
c41a40c5 | 50 | #include <linux/rfkill.h> |
6335e4d5 | 51 | #include <linux/input.h> |
384a7cd9 | 52 | #include <linux/input/sparse-keymap.h> |
6c3f6e6c | 53 | #include <linux/leds.h> |
5a0e3ad6 | 54 | #include <linux/slab.h> |
c9263557 | 55 | |
1da177e4 LT |
56 | #include <asm/uaccess.h> |
57 | ||
58 | #include <acpi/acpi_drivers.h> | |
59 | ||
60 | MODULE_AUTHOR("John Belmonte"); | |
61 | MODULE_DESCRIPTION("Toshiba Laptop ACPI Extras Driver"); | |
62 | MODULE_LICENSE("GPL"); | |
63 | ||
1da177e4 | 64 | /* Toshiba ACPI method paths */ |
1da177e4 LT |
65 | #define METHOD_VIDEO_OUT "\\_SB_.VALX.DSSX" |
66 | ||
67 | /* Toshiba HCI interface definitions | |
68 | * | |
69 | * HCI is Toshiba's "Hardware Control Interface" which is supposed to | |
70 | * be uniform across all their models. Ideally we would just call | |
71 | * dedicated ACPI methods instead of using this primitive interface. | |
72 | * However the ACPI methods seem to be incomplete in some areas (for | |
73 | * example they allow setting, but not reading, the LCD brightness value), | |
74 | * so this is still useful. | |
75 | */ | |
76 | ||
77 | #define HCI_WORDS 6 | |
78 | ||
79 | /* operations */ | |
80 | #define HCI_SET 0xff00 | |
81 | #define HCI_GET 0xfe00 | |
82 | ||
83 | /* return codes */ | |
84 | #define HCI_SUCCESS 0x0000 | |
85 | #define HCI_FAILURE 0x1000 | |
86 | #define HCI_NOT_SUPPORTED 0x8000 | |
87 | #define HCI_EMPTY 0x8c00 | |
88 | ||
89 | /* registers */ | |
90 | #define HCI_FAN 0x0004 | |
91 | #define HCI_SYSTEM_EVENT 0x0016 | |
92 | #define HCI_VIDEO_OUT 0x001c | |
93 | #define HCI_HOTKEY_EVENT 0x001e | |
94 | #define HCI_LCD_BRIGHTNESS 0x002a | |
c41a40c5 | 95 | #define HCI_WIRELESS 0x0056 |
1da177e4 LT |
96 | |
97 | /* field definitions */ | |
98 | #define HCI_LCD_BRIGHTNESS_BITS 3 | |
99 | #define HCI_LCD_BRIGHTNESS_SHIFT (16-HCI_LCD_BRIGHTNESS_BITS) | |
100 | #define HCI_LCD_BRIGHTNESS_LEVELS (1 << HCI_LCD_BRIGHTNESS_BITS) | |
101 | #define HCI_VIDEO_OUT_LCD 0x1 | |
102 | #define HCI_VIDEO_OUT_CRT 0x2 | |
103 | #define HCI_VIDEO_OUT_TV 0x4 | |
c41a40c5 | 104 | #define HCI_WIRELESS_KILL_SWITCH 0x01 |
105 | #define HCI_WIRELESS_BT_PRESENT 0x0f | |
106 | #define HCI_WIRELESS_BT_ATTACH 0x40 | |
107 | #define HCI_WIRELESS_BT_POWER 0x80 | |
1da177e4 | 108 | |
135740de SF |
109 | struct toshiba_acpi_dev { |
110 | struct acpi_device *acpi_dev; | |
111 | const char *method_hci; | |
112 | struct rfkill *bt_rfk; | |
113 | struct input_dev *hotkey_dev; | |
114 | struct backlight_device *backlight_dev; | |
115 | struct led_classdev led_dev; | |
116 | int illumination_installed; | |
117 | int force_fan; | |
118 | int last_key_event; | |
119 | int key_event_valid; | |
135740de SF |
120 | |
121 | struct mutex mutex; | |
122 | }; | |
123 | ||
4db42c51 | 124 | static const struct acpi_device_id toshiba_device_ids[] = { |
125 | {"TOS6200", 0}, | |
c41a40c5 | 126 | {"TOS6208", 0}, |
4db42c51 | 127 | {"TOS1900", 0}, |
128 | {"", 0}, | |
129 | }; | |
130 | MODULE_DEVICE_TABLE(acpi, toshiba_device_ids); | |
131 | ||
135740de | 132 | static const struct key_entry toshiba_acpi_keymap[] __devinitconst = { |
384a7cd9 DT |
133 | { KE_KEY, 0x101, { KEY_MUTE } }, |
134 | { KE_KEY, 0x102, { KEY_ZOOMOUT } }, | |
135 | { KE_KEY, 0x103, { KEY_ZOOMIN } }, | |
136 | { KE_KEY, 0x13b, { KEY_COFFEE } }, | |
137 | { KE_KEY, 0x13c, { KEY_BATTERY } }, | |
138 | { KE_KEY, 0x13d, { KEY_SLEEP } }, | |
139 | { KE_KEY, 0x13e, { KEY_SUSPEND } }, | |
140 | { KE_KEY, 0x13f, { KEY_SWITCHVIDEOMODE } }, | |
141 | { KE_KEY, 0x140, { KEY_BRIGHTNESSDOWN } }, | |
142 | { KE_KEY, 0x141, { KEY_BRIGHTNESSUP } }, | |
143 | { KE_KEY, 0x142, { KEY_WLAN } }, | |
144 | { KE_KEY, 0x143, { KEY_PROG1 } }, | |
a49010f5 | 145 | { KE_KEY, 0x17f, { KEY_FN } }, |
384a7cd9 DT |
146 | { KE_KEY, 0xb05, { KEY_PROG2 } }, |
147 | { KE_KEY, 0xb06, { KEY_WWW } }, | |
148 | { KE_KEY, 0xb07, { KEY_MAIL } }, | |
149 | { KE_KEY, 0xb30, { KEY_STOP } }, | |
150 | { KE_KEY, 0xb31, { KEY_PREVIOUSSONG } }, | |
151 | { KE_KEY, 0xb32, { KEY_NEXTSONG } }, | |
152 | { KE_KEY, 0xb33, { KEY_PLAYPAUSE } }, | |
153 | { KE_KEY, 0xb5a, { KEY_MEDIA } }, | |
154 | { KE_END, 0 }, | |
6335e4d5 MG |
155 | }; |
156 | ||
1da177e4 LT |
157 | /* utility |
158 | */ | |
159 | ||
4be44fcd | 160 | static __inline__ void _set_bit(u32 * word, u32 mask, int value) |
1da177e4 LT |
161 | { |
162 | *word = (*word & ~mask) | (mask * value); | |
163 | } | |
164 | ||
165 | /* acpi interface wrappers | |
166 | */ | |
167 | ||
4be44fcd | 168 | static int write_acpi_int(const char *methodName, int val) |
1da177e4 LT |
169 | { |
170 | struct acpi_object_list params; | |
171 | union acpi_object in_objs[1]; | |
172 | acpi_status status; | |
173 | ||
b2b7910d | 174 | params.count = ARRAY_SIZE(in_objs); |
1da177e4 LT |
175 | params.pointer = in_objs; |
176 | in_objs[0].type = ACPI_TYPE_INTEGER; | |
177 | in_objs[0].integer.value = val; | |
178 | ||
4be44fcd | 179 | status = acpi_evaluate_object(NULL, (char *)methodName, ¶ms, NULL); |
32bcd5cb | 180 | return (status == AE_OK) ? 0 : -EIO; |
1da177e4 LT |
181 | } |
182 | ||
1da177e4 LT |
183 | /* Perform a raw HCI call. Here we don't care about input or output buffer |
184 | * format. | |
185 | */ | |
135740de SF |
186 | static acpi_status hci_raw(struct toshiba_acpi_dev *dev, |
187 | const u32 in[HCI_WORDS], u32 out[HCI_WORDS]) | |
1da177e4 LT |
188 | { |
189 | struct acpi_object_list params; | |
190 | union acpi_object in_objs[HCI_WORDS]; | |
191 | struct acpi_buffer results; | |
4be44fcd | 192 | union acpi_object out_objs[HCI_WORDS + 1]; |
1da177e4 LT |
193 | acpi_status status; |
194 | int i; | |
195 | ||
196 | params.count = HCI_WORDS; | |
197 | params.pointer = in_objs; | |
198 | for (i = 0; i < HCI_WORDS; ++i) { | |
199 | in_objs[i].type = ACPI_TYPE_INTEGER; | |
200 | in_objs[i].integer.value = in[i]; | |
201 | } | |
202 | ||
203 | results.length = sizeof(out_objs); | |
204 | results.pointer = out_objs; | |
205 | ||
6e02cc7e SF |
206 | status = acpi_evaluate_object(dev->acpi_dev->handle, |
207 | (char *)dev->method_hci, ¶ms, | |
4be44fcd | 208 | &results); |
1da177e4 LT |
209 | if ((status == AE_OK) && (out_objs->package.count <= HCI_WORDS)) { |
210 | for (i = 0; i < out_objs->package.count; ++i) { | |
211 | out[i] = out_objs->package.elements[i].integer.value; | |
212 | } | |
213 | } | |
214 | ||
215 | return status; | |
216 | } | |
217 | ||
c41a40c5 | 218 | /* common hci tasks (get or set one or two value) |
1da177e4 LT |
219 | * |
220 | * In addition to the ACPI status, the HCI system returns a result which | |
221 | * may be useful (such as "not supported"). | |
222 | */ | |
223 | ||
135740de SF |
224 | static acpi_status hci_write1(struct toshiba_acpi_dev *dev, u32 reg, |
225 | u32 in1, u32 *result) | |
1da177e4 LT |
226 | { |
227 | u32 in[HCI_WORDS] = { HCI_SET, reg, in1, 0, 0, 0 }; | |
228 | u32 out[HCI_WORDS]; | |
135740de | 229 | acpi_status status = hci_raw(dev, in, out); |
1da177e4 LT |
230 | *result = (status == AE_OK) ? out[0] : HCI_FAILURE; |
231 | return status; | |
232 | } | |
233 | ||
135740de SF |
234 | static acpi_status hci_read1(struct toshiba_acpi_dev *dev, u32 reg, |
235 | u32 *out1, u32 *result) | |
1da177e4 LT |
236 | { |
237 | u32 in[HCI_WORDS] = { HCI_GET, reg, 0, 0, 0, 0 }; | |
238 | u32 out[HCI_WORDS]; | |
135740de | 239 | acpi_status status = hci_raw(dev, in, out); |
1da177e4 LT |
240 | *out1 = out[2]; |
241 | *result = (status == AE_OK) ? out[0] : HCI_FAILURE; | |
242 | return status; | |
243 | } | |
244 | ||
135740de SF |
245 | static acpi_status hci_write2(struct toshiba_acpi_dev *dev, u32 reg, |
246 | u32 in1, u32 in2, u32 *result) | |
c41a40c5 | 247 | { |
248 | u32 in[HCI_WORDS] = { HCI_SET, reg, in1, in2, 0, 0 }; | |
249 | u32 out[HCI_WORDS]; | |
135740de | 250 | acpi_status status = hci_raw(dev, in, out); |
c41a40c5 | 251 | *result = (status == AE_OK) ? out[0] : HCI_FAILURE; |
252 | return status; | |
253 | } | |
254 | ||
135740de SF |
255 | static acpi_status hci_read2(struct toshiba_acpi_dev *dev, u32 reg, |
256 | u32 *out1, u32 *out2, u32 *result) | |
c41a40c5 | 257 | { |
258 | u32 in[HCI_WORDS] = { HCI_GET, reg, *out1, *out2, 0, 0 }; | |
259 | u32 out[HCI_WORDS]; | |
135740de | 260 | acpi_status status = hci_raw(dev, in, out); |
c41a40c5 | 261 | *out1 = out[2]; |
262 | *out2 = out[3]; | |
263 | *result = (status == AE_OK) ? out[0] : HCI_FAILURE; | |
264 | return status; | |
265 | } | |
266 | ||
6c3f6e6c | 267 | /* Illumination support */ |
135740de | 268 | static int toshiba_illumination_available(struct toshiba_acpi_dev *dev) |
6c3f6e6c PD |
269 | { |
270 | u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 }; | |
271 | u32 out[HCI_WORDS]; | |
272 | acpi_status status; | |
273 | ||
274 | in[0] = 0xf100; | |
135740de | 275 | status = hci_raw(dev, in, out); |
6c3f6e6c | 276 | if (ACPI_FAILURE(status)) { |
7e33460d | 277 | pr_info("Illumination device not available\n"); |
6c3f6e6c PD |
278 | return 0; |
279 | } | |
280 | in[0] = 0xf400; | |
135740de | 281 | status = hci_raw(dev, in, out); |
6c3f6e6c PD |
282 | return 1; |
283 | } | |
284 | ||
285 | static void toshiba_illumination_set(struct led_classdev *cdev, | |
286 | enum led_brightness brightness) | |
287 | { | |
135740de SF |
288 | struct toshiba_acpi_dev *dev = container_of(cdev, |
289 | struct toshiba_acpi_dev, led_dev); | |
6c3f6e6c PD |
290 | u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 }; |
291 | u32 out[HCI_WORDS]; | |
292 | acpi_status status; | |
293 | ||
294 | /* First request : initialize communication. */ | |
295 | in[0] = 0xf100; | |
135740de | 296 | status = hci_raw(dev, in, out); |
6c3f6e6c | 297 | if (ACPI_FAILURE(status)) { |
7e33460d | 298 | pr_info("Illumination device not available\n"); |
6c3f6e6c PD |
299 | return; |
300 | } | |
301 | ||
302 | if (brightness) { | |
303 | /* Switch the illumination on */ | |
304 | in[0] = 0xf400; | |
305 | in[1] = 0x14e; | |
306 | in[2] = 1; | |
135740de | 307 | status = hci_raw(dev, in, out); |
6c3f6e6c | 308 | if (ACPI_FAILURE(status)) { |
7e33460d | 309 | pr_info("ACPI call for illumination failed\n"); |
6c3f6e6c PD |
310 | return; |
311 | } | |
312 | } else { | |
313 | /* Switch the illumination off */ | |
314 | in[0] = 0xf400; | |
315 | in[1] = 0x14e; | |
316 | in[2] = 0; | |
135740de | 317 | status = hci_raw(dev, in, out); |
6c3f6e6c | 318 | if (ACPI_FAILURE(status)) { |
7e33460d | 319 | pr_info("ACPI call for illumination failed.\n"); |
6c3f6e6c PD |
320 | return; |
321 | } | |
322 | } | |
323 | ||
324 | /* Last request : close communication. */ | |
325 | in[0] = 0xf200; | |
326 | in[1] = 0; | |
327 | in[2] = 0; | |
135740de | 328 | hci_raw(dev, in, out); |
6c3f6e6c PD |
329 | } |
330 | ||
331 | static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev) | |
332 | { | |
135740de SF |
333 | struct toshiba_acpi_dev *dev = container_of(cdev, |
334 | struct toshiba_acpi_dev, led_dev); | |
6c3f6e6c PD |
335 | u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 }; |
336 | u32 out[HCI_WORDS]; | |
337 | acpi_status status; | |
338 | enum led_brightness result; | |
339 | ||
340 | /*Â First request : initialize communication. */ | |
341 | in[0] = 0xf100; | |
135740de | 342 | status = hci_raw(dev, in, out); |
6c3f6e6c | 343 | if (ACPI_FAILURE(status)) { |
7e33460d | 344 | pr_info("Illumination device not available\n"); |
6c3f6e6c PD |
345 | return LED_OFF; |
346 | } | |
347 | ||
348 | /* Check the illumination */ | |
349 | in[0] = 0xf300; | |
350 | in[1] = 0x14e; | |
135740de | 351 | status = hci_raw(dev, in, out); |
6c3f6e6c | 352 | if (ACPI_FAILURE(status)) { |
7e33460d | 353 | pr_info("ACPI call for illumination failed.\n"); |
6c3f6e6c PD |
354 | return LED_OFF; |
355 | } | |
356 | ||
357 | result = out[2] ? LED_FULL : LED_OFF; | |
358 | ||
359 | /* Last request : close communication. */ | |
360 | in[0] = 0xf200; | |
361 | in[1] = 0; | |
362 | in[2] = 0; | |
135740de | 363 | hci_raw(dev, in, out); |
6c3f6e6c PD |
364 | |
365 | return result; | |
366 | } | |
367 | ||
c41a40c5 | 368 | /* Bluetooth rfkill handlers */ |
369 | ||
135740de | 370 | static u32 hci_get_bt_present(struct toshiba_acpi_dev *dev, bool *present) |
c41a40c5 | 371 | { |
372 | u32 hci_result; | |
373 | u32 value, value2; | |
374 | ||
375 | value = 0; | |
376 | value2 = 0; | |
135740de | 377 | hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result); |
c41a40c5 | 378 | if (hci_result == HCI_SUCCESS) |
379 | *present = (value & HCI_WIRELESS_BT_PRESENT) ? true : false; | |
380 | ||
381 | return hci_result; | |
382 | } | |
383 | ||
135740de | 384 | static u32 hci_get_radio_state(struct toshiba_acpi_dev *dev, bool *radio_state) |
c41a40c5 | 385 | { |
386 | u32 hci_result; | |
387 | u32 value, value2; | |
388 | ||
389 | value = 0; | |
390 | value2 = 0x0001; | |
135740de | 391 | hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result); |
c41a40c5 | 392 | |
393 | *radio_state = value & HCI_WIRELESS_KILL_SWITCH; | |
394 | return hci_result; | |
395 | } | |
396 | ||
19d337df | 397 | static int bt_rfkill_set_block(void *data, bool blocked) |
c41a40c5 | 398 | { |
19d337df | 399 | struct toshiba_acpi_dev *dev = data; |
c41a40c5 | 400 | u32 result1, result2; |
401 | u32 value; | |
19d337df | 402 | int err; |
c41a40c5 | 403 | bool radio_state; |
c41a40c5 | 404 | |
19d337df | 405 | value = (blocked == false); |
c41a40c5 | 406 | |
19d337df | 407 | mutex_lock(&dev->mutex); |
135740de | 408 | if (hci_get_radio_state(dev, &radio_state) != HCI_SUCCESS) { |
32bcd5cb | 409 | err = -EIO; |
19d337df JB |
410 | goto out; |
411 | } | |
c41a40c5 | 412 | |
19d337df JB |
413 | if (!radio_state) { |
414 | err = 0; | |
415 | goto out; | |
c41a40c5 | 416 | } |
417 | ||
135740de SF |
418 | hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER, &result1); |
419 | hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH, &result2); | |
c41a40c5 | 420 | |
421 | if (result1 != HCI_SUCCESS || result2 != HCI_SUCCESS) | |
32bcd5cb | 422 | err = -EIO; |
19d337df JB |
423 | else |
424 | err = 0; | |
425 | out: | |
426 | mutex_unlock(&dev->mutex); | |
427 | return err; | |
c41a40c5 | 428 | } |
429 | ||
19d337df | 430 | static void bt_rfkill_poll(struct rfkill *rfkill, void *data) |
c41a40c5 | 431 | { |
c41a40c5 | 432 | bool new_rfk_state; |
433 | bool value; | |
434 | u32 hci_result; | |
19d337df JB |
435 | struct toshiba_acpi_dev *dev = data; |
436 | ||
437 | mutex_lock(&dev->mutex); | |
c41a40c5 | 438 | |
135740de | 439 | hci_result = hci_get_radio_state(dev, &value); |
19d337df JB |
440 | if (hci_result != HCI_SUCCESS) { |
441 | /* Can't do anything useful */ | |
442 | mutex_unlock(&dev->mutex); | |
82e7784f | 443 | return; |
19d337df | 444 | } |
c41a40c5 | 445 | |
446 | new_rfk_state = value; | |
447 | ||
c41a40c5 | 448 | mutex_unlock(&dev->mutex); |
449 | ||
19d337df JB |
450 | if (rfkill_set_hw_state(rfkill, !new_rfk_state)) |
451 | bt_rfkill_set_block(data, true); | |
c41a40c5 | 452 | } |
453 | ||
19d337df JB |
454 | static const struct rfkill_ops toshiba_rfk_ops = { |
455 | .set_block = bt_rfkill_set_block, | |
456 | .poll = bt_rfkill_poll, | |
457 | }; | |
458 | ||
4be44fcd | 459 | static struct proc_dir_entry *toshiba_proc_dir /*= 0*/ ; |
1da177e4 | 460 | |
c9263557 | 461 | static int get_lcd(struct backlight_device *bd) |
1da177e4 | 462 | { |
135740de | 463 | struct toshiba_acpi_dev *dev = bl_get_data(bd); |
1da177e4 LT |
464 | u32 hci_result; |
465 | u32 value; | |
466 | ||
135740de | 467 | hci_read1(dev, HCI_LCD_BRIGHTNESS, &value, &hci_result); |
32bcd5cb | 468 | if (hci_result == HCI_SUCCESS) |
c9263557 | 469 | return (value >> HCI_LCD_BRIGHTNESS_SHIFT); |
32bcd5cb SF |
470 | |
471 | return -EIO; | |
c9263557 HM |
472 | } |
473 | ||
936c8bcd | 474 | static int lcd_proc_show(struct seq_file *m, void *v) |
c9263557 | 475 | { |
135740de SF |
476 | struct toshiba_acpi_dev *dev = m->private; |
477 | int value; | |
478 | ||
479 | if (!dev->backlight_dev) | |
480 | return -ENODEV; | |
c9263557 | 481 | |
135740de | 482 | value = get_lcd(dev->backlight_dev); |
c9263557 | 483 | if (value >= 0) { |
936c8bcd AD |
484 | seq_printf(m, "brightness: %d\n", value); |
485 | seq_printf(m, "brightness_levels: %d\n", | |
4be44fcd | 486 | HCI_LCD_BRIGHTNESS_LEVELS); |
32bcd5cb | 487 | return 0; |
1da177e4 LT |
488 | } |
489 | ||
32bcd5cb SF |
490 | pr_err("Error reading LCD brightness\n"); |
491 | return -EIO; | |
936c8bcd AD |
492 | } |
493 | ||
494 | static int lcd_proc_open(struct inode *inode, struct file *file) | |
495 | { | |
135740de | 496 | return single_open(file, lcd_proc_show, PDE(inode)->data); |
1da177e4 LT |
497 | } |
498 | ||
135740de | 499 | static int set_lcd(struct toshiba_acpi_dev *dev, int value) |
c9263557 HM |
500 | { |
501 | u32 hci_result; | |
502 | ||
503 | value = value << HCI_LCD_BRIGHTNESS_SHIFT; | |
135740de | 504 | hci_write1(dev, HCI_LCD_BRIGHTNESS, value, &hci_result); |
32bcd5cb | 505 | return hci_result == HCI_SUCCESS ? 0 : -EIO; |
c9263557 HM |
506 | } |
507 | ||
508 | static int set_lcd_status(struct backlight_device *bd) | |
509 | { | |
135740de SF |
510 | struct toshiba_acpi_dev *dev = bl_get_data(bd); |
511 | return set_lcd(dev, bd->props.brightness); | |
c9263557 HM |
512 | } |
513 | ||
936c8bcd AD |
514 | static ssize_t lcd_proc_write(struct file *file, const char __user *buf, |
515 | size_t count, loff_t *pos) | |
1da177e4 | 516 | { |
135740de | 517 | struct toshiba_acpi_dev *dev = PDE(file->f_path.dentry->d_inode)->data; |
936c8bcd AD |
518 | char cmd[42]; |
519 | size_t len; | |
1da177e4 | 520 | int value; |
c8af57eb | 521 | int ret; |
1da177e4 | 522 | |
936c8bcd AD |
523 | len = min(count, sizeof(cmd) - 1); |
524 | if (copy_from_user(cmd, buf, len)) | |
525 | return -EFAULT; | |
526 | cmd[len] = '\0'; | |
527 | ||
528 | if (sscanf(cmd, " brightness : %i", &value) == 1 && | |
c8af57eb | 529 | value >= 0 && value < HCI_LCD_BRIGHTNESS_LEVELS) { |
135740de | 530 | ret = set_lcd(dev, value); |
c8af57eb MO |
531 | if (ret == 0) |
532 | ret = count; | |
533 | } else { | |
c9263557 | 534 | ret = -EINVAL; |
c8af57eb | 535 | } |
c9263557 | 536 | return ret; |
1da177e4 LT |
537 | } |
538 | ||
936c8bcd AD |
539 | static const struct file_operations lcd_proc_fops = { |
540 | .owner = THIS_MODULE, | |
541 | .open = lcd_proc_open, | |
542 | .read = seq_read, | |
543 | .llseek = seq_lseek, | |
544 | .release = single_release, | |
545 | .write = lcd_proc_write, | |
546 | }; | |
547 | ||
548 | static int video_proc_show(struct seq_file *m, void *v) | |
1da177e4 | 549 | { |
135740de | 550 | struct toshiba_acpi_dev *dev = m->private; |
1da177e4 LT |
551 | u32 hci_result; |
552 | u32 value; | |
553 | ||
135740de | 554 | hci_read1(dev, HCI_VIDEO_OUT, &value, &hci_result); |
1da177e4 LT |
555 | if (hci_result == HCI_SUCCESS) { |
556 | int is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0; | |
557 | int is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0; | |
4be44fcd | 558 | int is_tv = (value & HCI_VIDEO_OUT_TV) ? 1 : 0; |
936c8bcd AD |
559 | seq_printf(m, "lcd_out: %d\n", is_lcd); |
560 | seq_printf(m, "crt_out: %d\n", is_crt); | |
561 | seq_printf(m, "tv_out: %d\n", is_tv); | |
32bcd5cb | 562 | return 0; |
1da177e4 LT |
563 | } |
564 | ||
32bcd5cb | 565 | return -EIO; |
1da177e4 LT |
566 | } |
567 | ||
936c8bcd | 568 | static int video_proc_open(struct inode *inode, struct file *file) |
1da177e4 | 569 | { |
135740de | 570 | return single_open(file, video_proc_show, PDE(inode)->data); |
936c8bcd AD |
571 | } |
572 | ||
573 | static ssize_t video_proc_write(struct file *file, const char __user *buf, | |
574 | size_t count, loff_t *pos) | |
575 | { | |
135740de | 576 | struct toshiba_acpi_dev *dev = PDE(file->f_path.dentry->d_inode)->data; |
936c8bcd | 577 | char *cmd, *buffer; |
32bcd5cb | 578 | int ret = 0; |
1da177e4 LT |
579 | int value; |
580 | int remain = count; | |
581 | int lcd_out = -1; | |
582 | int crt_out = -1; | |
583 | int tv_out = -1; | |
584 | u32 hci_result; | |
b4482a4b | 585 | u32 video_out; |
1da177e4 | 586 | |
936c8bcd AD |
587 | cmd = kmalloc(count + 1, GFP_KERNEL); |
588 | if (!cmd) | |
589 | return -ENOMEM; | |
590 | if (copy_from_user(cmd, buf, count)) { | |
591 | kfree(cmd); | |
592 | return -EFAULT; | |
593 | } | |
594 | cmd[count] = '\0'; | |
595 | ||
596 | buffer = cmd; | |
597 | ||
1da177e4 LT |
598 | /* scan expression. Multiple expressions may be delimited with ; |
599 | * | |
600 | * NOTE: to keep scanning simple, invalid fields are ignored | |
601 | */ | |
602 | while (remain) { | |
603 | if (sscanf(buffer, " lcd_out : %i", &value) == 1) | |
604 | lcd_out = value & 1; | |
605 | else if (sscanf(buffer, " crt_out : %i", &value) == 1) | |
606 | crt_out = value & 1; | |
607 | else if (sscanf(buffer, " tv_out : %i", &value) == 1) | |
608 | tv_out = value & 1; | |
609 | /* advance to one character past the next ; */ | |
610 | do { | |
611 | ++buffer; | |
612 | --remain; | |
613 | } | |
4be44fcd | 614 | while (remain && *(buffer - 1) != ';'); |
1da177e4 LT |
615 | } |
616 | ||
936c8bcd AD |
617 | kfree(cmd); |
618 | ||
135740de | 619 | hci_read1(dev, HCI_VIDEO_OUT, &video_out, &hci_result); |
1da177e4 | 620 | if (hci_result == HCI_SUCCESS) { |
9e113e00 | 621 | unsigned int new_video_out = video_out; |
1da177e4 LT |
622 | if (lcd_out != -1) |
623 | _set_bit(&new_video_out, HCI_VIDEO_OUT_LCD, lcd_out); | |
624 | if (crt_out != -1) | |
625 | _set_bit(&new_video_out, HCI_VIDEO_OUT_CRT, crt_out); | |
626 | if (tv_out != -1) | |
627 | _set_bit(&new_video_out, HCI_VIDEO_OUT_TV, tv_out); | |
628 | /* To avoid unnecessary video disruption, only write the new | |
629 | * video setting if something changed. */ | |
630 | if (new_video_out != video_out) | |
32bcd5cb | 631 | ret = write_acpi_int(METHOD_VIDEO_OUT, new_video_out); |
1da177e4 | 632 | } else { |
32bcd5cb | 633 | ret = -EIO; |
1da177e4 LT |
634 | } |
635 | ||
32bcd5cb | 636 | return ret ? ret : count; |
1da177e4 LT |
637 | } |
638 | ||
936c8bcd AD |
639 | static const struct file_operations video_proc_fops = { |
640 | .owner = THIS_MODULE, | |
641 | .open = video_proc_open, | |
642 | .read = seq_read, | |
643 | .llseek = seq_lseek, | |
644 | .release = single_release, | |
645 | .write = video_proc_write, | |
646 | }; | |
647 | ||
648 | static int fan_proc_show(struct seq_file *m, void *v) | |
1da177e4 | 649 | { |
135740de | 650 | struct toshiba_acpi_dev *dev = m->private; |
1da177e4 LT |
651 | u32 hci_result; |
652 | u32 value; | |
653 | ||
135740de | 654 | hci_read1(dev, HCI_FAN, &value, &hci_result); |
1da177e4 | 655 | if (hci_result == HCI_SUCCESS) { |
936c8bcd | 656 | seq_printf(m, "running: %d\n", (value > 0)); |
135740de | 657 | seq_printf(m, "force_on: %d\n", dev->force_fan); |
32bcd5cb | 658 | return 0; |
1da177e4 LT |
659 | } |
660 | ||
32bcd5cb | 661 | return -EIO; |
936c8bcd AD |
662 | } |
663 | ||
664 | static int fan_proc_open(struct inode *inode, struct file *file) | |
665 | { | |
135740de | 666 | return single_open(file, fan_proc_show, PDE(inode)->data); |
1da177e4 LT |
667 | } |
668 | ||
936c8bcd AD |
669 | static ssize_t fan_proc_write(struct file *file, const char __user *buf, |
670 | size_t count, loff_t *pos) | |
1da177e4 | 671 | { |
135740de | 672 | struct toshiba_acpi_dev *dev = PDE(file->f_path.dentry->d_inode)->data; |
936c8bcd AD |
673 | char cmd[42]; |
674 | size_t len; | |
1da177e4 LT |
675 | int value; |
676 | u32 hci_result; | |
677 | ||
936c8bcd AD |
678 | len = min(count, sizeof(cmd) - 1); |
679 | if (copy_from_user(cmd, buf, len)) | |
680 | return -EFAULT; | |
681 | cmd[len] = '\0'; | |
682 | ||
683 | if (sscanf(cmd, " force_on : %i", &value) == 1 && | |
4be44fcd | 684 | value >= 0 && value <= 1) { |
135740de | 685 | hci_write1(dev, HCI_FAN, value, &hci_result); |
1da177e4 | 686 | if (hci_result != HCI_SUCCESS) |
32bcd5cb | 687 | return -EIO; |
1da177e4 | 688 | else |
135740de | 689 | dev->force_fan = value; |
1da177e4 LT |
690 | } else { |
691 | return -EINVAL; | |
692 | } | |
693 | ||
694 | return count; | |
695 | } | |
696 | ||
936c8bcd AD |
697 | static const struct file_operations fan_proc_fops = { |
698 | .owner = THIS_MODULE, | |
699 | .open = fan_proc_open, | |
700 | .read = seq_read, | |
701 | .llseek = seq_lseek, | |
702 | .release = single_release, | |
703 | .write = fan_proc_write, | |
704 | }; | |
705 | ||
706 | static int keys_proc_show(struct seq_file *m, void *v) | |
1da177e4 | 707 | { |
135740de | 708 | struct toshiba_acpi_dev *dev = m->private; |
1da177e4 LT |
709 | u32 hci_result; |
710 | u32 value; | |
711 | ||
135740de SF |
712 | if (!dev->key_event_valid) { |
713 | hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result); | |
1da177e4 | 714 | if (hci_result == HCI_SUCCESS) { |
135740de SF |
715 | dev->key_event_valid = 1; |
716 | dev->last_key_event = value; | |
1da177e4 LT |
717 | } else if (hci_result == HCI_EMPTY) { |
718 | /* better luck next time */ | |
719 | } else if (hci_result == HCI_NOT_SUPPORTED) { | |
720 | /* This is a workaround for an unresolved issue on | |
721 | * some machines where system events sporadically | |
722 | * become disabled. */ | |
135740de | 723 | hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result); |
7e33460d | 724 | pr_notice("Re-enabled hotkeys\n"); |
1da177e4 | 725 | } else { |
7e33460d | 726 | pr_err("Error reading hotkey status\n"); |
32bcd5cb | 727 | return -EIO; |
1da177e4 LT |
728 | } |
729 | } | |
730 | ||
135740de SF |
731 | seq_printf(m, "hotkey_ready: %d\n", dev->key_event_valid); |
732 | seq_printf(m, "hotkey: 0x%04x\n", dev->last_key_event); | |
936c8bcd AD |
733 | return 0; |
734 | } | |
1da177e4 | 735 | |
936c8bcd AD |
736 | static int keys_proc_open(struct inode *inode, struct file *file) |
737 | { | |
135740de | 738 | return single_open(file, keys_proc_show, PDE(inode)->data); |
1da177e4 LT |
739 | } |
740 | ||
936c8bcd AD |
741 | static ssize_t keys_proc_write(struct file *file, const char __user *buf, |
742 | size_t count, loff_t *pos) | |
1da177e4 | 743 | { |
135740de | 744 | struct toshiba_acpi_dev *dev = PDE(file->f_path.dentry->d_inode)->data; |
936c8bcd AD |
745 | char cmd[42]; |
746 | size_t len; | |
1da177e4 LT |
747 | int value; |
748 | ||
936c8bcd AD |
749 | len = min(count, sizeof(cmd) - 1); |
750 | if (copy_from_user(cmd, buf, len)) | |
751 | return -EFAULT; | |
752 | cmd[len] = '\0'; | |
753 | ||
754 | if (sscanf(cmd, " hotkey_ready : %i", &value) == 1 && value == 0) { | |
135740de | 755 | dev->key_event_valid = 0; |
1da177e4 LT |
756 | } else { |
757 | return -EINVAL; | |
758 | } | |
759 | ||
760 | return count; | |
761 | } | |
762 | ||
936c8bcd AD |
763 | static const struct file_operations keys_proc_fops = { |
764 | .owner = THIS_MODULE, | |
765 | .open = keys_proc_open, | |
766 | .read = seq_read, | |
767 | .llseek = seq_lseek, | |
768 | .release = single_release, | |
769 | .write = keys_proc_write, | |
770 | }; | |
771 | ||
772 | static int version_proc_show(struct seq_file *m, void *v) | |
1da177e4 | 773 | { |
936c8bcd AD |
774 | seq_printf(m, "driver: %s\n", TOSHIBA_ACPI_VERSION); |
775 | seq_printf(m, "proc_interface: %d\n", PROC_INTERFACE_VERSION); | |
776 | return 0; | |
1da177e4 LT |
777 | } |
778 | ||
936c8bcd AD |
779 | static int version_proc_open(struct inode *inode, struct file *file) |
780 | { | |
781 | return single_open(file, version_proc_show, PDE(inode)->data); | |
782 | } | |
783 | ||
784 | static const struct file_operations version_proc_fops = { | |
785 | .owner = THIS_MODULE, | |
786 | .open = version_proc_open, | |
787 | .read = seq_read, | |
788 | .llseek = seq_lseek, | |
789 | .release = single_release, | |
790 | }; | |
791 | ||
1da177e4 LT |
792 | /* proc and module init |
793 | */ | |
794 | ||
795 | #define PROC_TOSHIBA "toshiba" | |
796 | ||
135740de SF |
797 | static void __devinit |
798 | create_toshiba_proc_entries(struct toshiba_acpi_dev *dev) | |
1da177e4 | 799 | { |
135740de SF |
800 | proc_create_data("lcd", S_IRUGO | S_IWUSR, toshiba_proc_dir, |
801 | &lcd_proc_fops, dev); | |
802 | proc_create_data("video", S_IRUGO | S_IWUSR, toshiba_proc_dir, | |
803 | &video_proc_fops, dev); | |
804 | proc_create_data("fan", S_IRUGO | S_IWUSR, toshiba_proc_dir, | |
805 | &fan_proc_fops, dev); | |
806 | proc_create_data("keys", S_IRUGO | S_IWUSR, toshiba_proc_dir, | |
807 | &keys_proc_fops, dev); | |
808 | proc_create_data("version", S_IRUGO, toshiba_proc_dir, | |
809 | &version_proc_fops, dev); | |
1da177e4 LT |
810 | } |
811 | ||
f8ef3aec | 812 | static void remove_toshiba_proc_entries(void) |
1da177e4 | 813 | { |
936c8bcd AD |
814 | remove_proc_entry("lcd", toshiba_proc_dir); |
815 | remove_proc_entry("video", toshiba_proc_dir); | |
816 | remove_proc_entry("fan", toshiba_proc_dir); | |
817 | remove_proc_entry("keys", toshiba_proc_dir); | |
818 | remove_proc_entry("version", toshiba_proc_dir); | |
1da177e4 LT |
819 | } |
820 | ||
acc2472e | 821 | static const struct backlight_ops toshiba_backlight_data = { |
c9263557 HM |
822 | .get_brightness = get_lcd, |
823 | .update_status = set_lcd_status, | |
c9263557 HM |
824 | }; |
825 | ||
6e02cc7e | 826 | static int __devinit toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev) |
6335e4d5 MG |
827 | { |
828 | acpi_status status; | |
384a7cd9 | 829 | int error; |
6335e4d5 | 830 | |
135740de SF |
831 | dev->hotkey_dev = input_allocate_device(); |
832 | if (!dev->hotkey_dev) { | |
7e33460d | 833 | pr_info("Unable to register input device\n"); |
6335e4d5 MG |
834 | return -ENOMEM; |
835 | } | |
836 | ||
135740de | 837 | dev->hotkey_dev->name = "Toshiba input device"; |
6e02cc7e | 838 | dev->hotkey_dev->phys = "toshiba_acpi/input0"; |
135740de | 839 | dev->hotkey_dev->id.bustype = BUS_HOST; |
6335e4d5 | 840 | |
135740de | 841 | error = sparse_keymap_setup(dev->hotkey_dev, toshiba_acpi_keymap, NULL); |
384a7cd9 DT |
842 | if (error) |
843 | goto err_free_dev; | |
844 | ||
6e02cc7e | 845 | status = acpi_evaluate_object(dev->acpi_dev->handle, "ENAB", NULL, NULL); |
384a7cd9 | 846 | if (ACPI_FAILURE(status)) { |
7e33460d | 847 | pr_info("Unable to enable hotkeys\n"); |
384a7cd9 | 848 | error = -ENODEV; |
135740de | 849 | goto err_free_keymap; |
6335e4d5 MG |
850 | } |
851 | ||
135740de | 852 | error = input_register_device(dev->hotkey_dev); |
384a7cd9 | 853 | if (error) { |
7e33460d | 854 | pr_info("Unable to register input device\n"); |
135740de | 855 | goto err_free_keymap; |
6335e4d5 MG |
856 | } |
857 | ||
858 | return 0; | |
384a7cd9 | 859 | |
384a7cd9 | 860 | err_free_keymap: |
135740de | 861 | sparse_keymap_free(dev->hotkey_dev); |
384a7cd9 | 862 | err_free_dev: |
135740de SF |
863 | input_free_device(dev->hotkey_dev); |
864 | dev->hotkey_dev = NULL; | |
384a7cd9 | 865 | return error; |
6335e4d5 MG |
866 | } |
867 | ||
135740de | 868 | static int toshiba_acpi_remove(struct acpi_device *acpi_dev, int type) |
c9263557 | 869 | { |
135740de | 870 | struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev); |
6335e4d5 | 871 | |
135740de | 872 | remove_toshiba_proc_entries(); |
c41a40c5 | 873 | |
135740de SF |
874 | if (dev->hotkey_dev) { |
875 | input_unregister_device(dev->hotkey_dev); | |
876 | sparse_keymap_free(dev->hotkey_dev); | |
877 | } | |
c9263557 | 878 | |
135740de SF |
879 | if (dev->bt_rfk) { |
880 | rfkill_unregister(dev->bt_rfk); | |
881 | rfkill_destroy(dev->bt_rfk); | |
882 | } | |
c9263557 | 883 | |
135740de SF |
884 | if (dev->backlight_dev) |
885 | backlight_device_unregister(dev->backlight_dev); | |
c9263557 | 886 | |
135740de SF |
887 | if (dev->illumination_installed) |
888 | led_classdev_unregister(&dev->led_dev); | |
6c3f6e6c | 889 | |
135740de | 890 | kfree(dev); |
c41a40c5 | 891 | |
135740de | 892 | return 0; |
c9263557 HM |
893 | } |
894 | ||
135740de | 895 | static int __devinit toshiba_acpi_add(struct acpi_device *acpi_dev) |
1da177e4 | 896 | { |
135740de | 897 | struct toshiba_acpi_dev *dev; |
6e02cc7e SF |
898 | acpi_status status; |
899 | acpi_handle handle; | |
1da177e4 | 900 | u32 hci_result; |
c41a40c5 | 901 | bool bt_present; |
c41a40c5 | 902 | int ret = 0; |
a19a6ee6 | 903 | struct backlight_properties props; |
1da177e4 | 904 | |
135740de SF |
905 | pr_info("Toshiba Laptop ACPI Extras version %s\n", |
906 | TOSHIBA_ACPI_VERSION); | |
907 | ||
6e02cc7e SF |
908 | /* simple device detection: look for HCI method */ |
909 | status = acpi_get_handle(acpi_dev->handle, "GHCI", &handle); | |
910 | if (ACPI_FAILURE(status)) | |
911 | return -ENODEV; | |
912 | ||
135740de SF |
913 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
914 | if (!dev) | |
915 | return -ENOMEM; | |
916 | dev->acpi_dev = acpi_dev; | |
6e02cc7e | 917 | dev->method_hci = "GHCI"; |
135740de | 918 | acpi_dev->driver_data = dev; |
fb9802fa | 919 | |
6e02cc7e SF |
920 | if (toshiba_acpi_setup_keyboard(dev)) |
921 | pr_info("Unable to activate hotkeys\n"); | |
135740de SF |
922 | |
923 | mutex_init(&dev->mutex); | |
1da177e4 LT |
924 | |
925 | /* enable event fifo */ | |
135740de | 926 | hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result); |
1da177e4 | 927 | |
135740de | 928 | create_toshiba_proc_entries(dev); |
1da177e4 | 929 | |
bb7ca747 | 930 | props.type = BACKLIGHT_PLATFORM; |
a19a6ee6 | 931 | props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1; |
135740de SF |
932 | dev->backlight_dev = backlight_device_register("toshiba", |
933 | &acpi_dev->dev, | |
934 | dev, | |
935 | &toshiba_backlight_data, | |
936 | &props); | |
937 | if (IS_ERR(dev->backlight_dev)) { | |
938 | ret = PTR_ERR(dev->backlight_dev); | |
1299342b | 939 | |
7e33460d | 940 | pr_err("Could not register toshiba backlight device\n"); |
135740de SF |
941 | dev->backlight_dev = NULL; |
942 | goto error; | |
c9263557 | 943 | } |
1da177e4 | 944 | |
c41a40c5 | 945 | /* Register rfkill switch for Bluetooth */ |
135740de SF |
946 | if (hci_get_bt_present(dev, &bt_present) == HCI_SUCCESS && bt_present) { |
947 | dev->bt_rfk = rfkill_alloc("Toshiba Bluetooth", | |
948 | &acpi_dev->dev, | |
949 | RFKILL_TYPE_BLUETOOTH, | |
950 | &toshiba_rfk_ops, | |
951 | dev); | |
952 | if (!dev->bt_rfk) { | |
7e33460d | 953 | pr_err("unable to allocate rfkill device\n"); |
135740de SF |
954 | ret = -ENOMEM; |
955 | goto error; | |
c41a40c5 | 956 | } |
957 | ||
135740de | 958 | ret = rfkill_register(dev->bt_rfk); |
c41a40c5 | 959 | if (ret) { |
7e33460d | 960 | pr_err("unable to register rfkill device\n"); |
135740de SF |
961 | rfkill_destroy(dev->bt_rfk); |
962 | goto error; | |
38aefbc5 | 963 | } |
c41a40c5 | 964 | } |
965 | ||
135740de SF |
966 | if (toshiba_illumination_available(dev)) { |
967 | dev->led_dev.name = "toshiba::illumination"; | |
968 | dev->led_dev.max_brightness = 1; | |
969 | dev->led_dev.brightness_set = toshiba_illumination_set; | |
970 | dev->led_dev.brightness_get = toshiba_illumination_get; | |
971 | if (!led_classdev_register(&acpi_dev->dev, &dev->led_dev)) | |
972 | dev->illumination_installed = 1; | |
6c3f6e6c PD |
973 | } |
974 | ||
c41a40c5 | 975 | return 0; |
135740de SF |
976 | |
977 | error: | |
978 | toshiba_acpi_remove(acpi_dev, 0); | |
979 | return ret; | |
980 | } | |
981 | ||
982 | static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event) | |
983 | { | |
984 | struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev); | |
985 | u32 hci_result, value; | |
986 | ||
987 | if (event != 0x80) | |
988 | return; | |
989 | do { | |
990 | hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result); | |
991 | if (hci_result == HCI_SUCCESS) { | |
992 | if (value == 0x100) | |
993 | continue; | |
994 | /* act on key press; ignore key release */ | |
995 | if (value & 0x80) | |
996 | continue; | |
997 | ||
998 | if (!sparse_keymap_report_event(dev->hotkey_dev, | |
999 | value, 1, true)) { | |
1000 | pr_info("Unknown key %x\n", | |
1001 | value); | |
1002 | } | |
1003 | } else if (hci_result == HCI_NOT_SUPPORTED) { | |
1004 | /* This is a workaround for an unresolved issue on | |
1005 | * some machines where system events sporadically | |
1006 | * become disabled. */ | |
1007 | hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result); | |
1008 | pr_notice("Re-enabled hotkeys\n"); | |
1009 | } | |
1010 | } while (hci_result != HCI_EMPTY); | |
1011 | } | |
1012 | ||
1013 | ||
1014 | static struct acpi_driver toshiba_acpi_driver = { | |
1015 | .name = "Toshiba ACPI driver", | |
1016 | .owner = THIS_MODULE, | |
1017 | .ids = toshiba_device_ids, | |
1018 | .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, | |
1019 | .ops = { | |
1020 | .add = toshiba_acpi_add, | |
1021 | .remove = toshiba_acpi_remove, | |
1022 | .notify = toshiba_acpi_notify, | |
1023 | }, | |
1024 | }; | |
1025 | ||
1026 | static int __init toshiba_acpi_init(void) | |
1027 | { | |
1028 | int ret; | |
1029 | ||
1030 | toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir); | |
1031 | if (!toshiba_proc_dir) { | |
1032 | pr_err("Unable to create proc dir " PROC_TOSHIBA "\n"); | |
1033 | return -ENODEV; | |
1034 | } | |
1035 | ||
1036 | ret = acpi_bus_register_driver(&toshiba_acpi_driver); | |
1037 | if (ret) { | |
1038 | pr_err("Failed to register ACPI driver: %d\n", ret); | |
1039 | remove_proc_entry(PROC_TOSHIBA, acpi_root_dir); | |
1040 | } | |
1041 | ||
1042 | return ret; | |
1043 | } | |
1044 | ||
1045 | static void __exit toshiba_acpi_exit(void) | |
1046 | { | |
1047 | acpi_bus_unregister_driver(&toshiba_acpi_driver); | |
1048 | if (toshiba_proc_dir) | |
1049 | remove_proc_entry(PROC_TOSHIBA, acpi_root_dir); | |
1da177e4 LT |
1050 | } |
1051 | ||
1052 | module_init(toshiba_acpi_init); | |
1053 | module_exit(toshiba_acpi_exit); |