Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
aa650bbd | 2 | * battery.c - ACPI Battery Driver (Revision: 2.0) |
1da177e4 | 3 | * |
aa650bbd AS |
4 | * Copyright (C) 2007 Alexey Starikovskiy <astarikovskiy@suse.de> |
5 | * Copyright (C) 2004-2007 Vladimir Lebedev <vladimir.p.lebedev@intel.com> | |
1da177e4 LT |
6 | * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> |
7 | * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> | |
8 | * | |
9 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or (at | |
14 | * your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, but | |
17 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | * General Public License for more details. | |
20 | * | |
1da177e4 LT |
21 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
22 | */ | |
23 | ||
fa93854f OG |
24 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
25 | ||
53dd200a DR |
26 | #include <linux/async.h> |
27 | #include <linux/delay.h> | |
28 | #include <linux/dmi.h> | |
29 | #include <linux/jiffies.h> | |
1da177e4 | 30 | #include <linux/kernel.h> |
fa93854f | 31 | #include <linux/list.h> |
1da177e4 | 32 | #include <linux/module.h> |
fa93854f | 33 | #include <linux/mutex.h> |
5a0e3ad6 | 34 | #include <linux/slab.h> |
25be5821 | 35 | #include <linux/suspend.h> |
53dd200a DR |
36 | #include <linux/types.h> |
37 | ||
4000e626 | 38 | #include <asm/unaligned.h> |
d7380965 | 39 | |
3a670cc7 LT |
40 | #ifdef CONFIG_ACPI_PROCFS_POWER |
41 | #include <linux/proc_fs.h> | |
42 | #include <linux/seq_file.h> | |
7c0f6ba6 | 43 | #include <linux/uaccess.h> |
3a670cc7 LT |
44 | #endif |
45 | ||
8b48463f | 46 | #include <linux/acpi.h> |
d7380965 AS |
47 | #include <linux/power_supply.h> |
48 | ||
fa93854f | 49 | #include <acpi/battery.h> |
f03be352 | 50 | |
a192a958 LB |
51 | #define PREFIX "ACPI: " |
52 | ||
1da177e4 LT |
53 | #define ACPI_BATTERY_VALUE_UNKNOWN 0xFFFFFFFF |
54 | ||
1da177e4 | 55 | #define ACPI_BATTERY_DEVICE_NAME "Battery" |
1da177e4 | 56 | |
ae6f6187 LT |
57 | /* Battery power unit: 0 means mW, 1 means mA */ |
58 | #define ACPI_BATTERY_POWER_UNIT_MA 1 | |
59 | ||
1ac5aaa6 ZR |
60 | #define ACPI_BATTERY_STATE_DISCHARGING 0x1 |
61 | #define ACPI_BATTERY_STATE_CHARGING 0x2 | |
62 | #define ACPI_BATTERY_STATE_CRITICAL 0x4 | |
63 | ||
1da177e4 | 64 | #define _COMPONENT ACPI_BATTERY_COMPONENT |
b6ce4083 | 65 | |
f52fd66d | 66 | ACPI_MODULE_NAME("battery"); |
1da177e4 | 67 | |
f52fd66d | 68 | MODULE_AUTHOR("Paul Diefenbaugh"); |
aa650bbd | 69 | MODULE_AUTHOR("Alexey Starikovskiy <astarikovskiy@suse.de>"); |
7cda93e0 | 70 | MODULE_DESCRIPTION("ACPI Battery Driver"); |
1da177e4 LT |
71 | MODULE_LICENSE("GPL"); |
72 | ||
eca21d91 | 73 | static async_cookie_t async_cookie; |
bc39fbcf | 74 | static bool battery_driver_registered; |
a90b4038 | 75 | static int battery_bix_broken_package; |
f43691c6 | 76 | static int battery_notification_delay_ms; |
1b799c5c | 77 | static int battery_ac_is_broken; |
ec625a37 | 78 | static int battery_check_pmic = 1; |
f1d4661a AS |
79 | static unsigned int cache_time = 1000; |
80 | module_param(cache_time, uint, 0644); | |
81 | MODULE_PARM_DESC(cache_time, "cache time in milliseconds"); | |
b6ce4083 | 82 | |
3a670cc7 LT |
83 | #ifdef CONFIG_ACPI_PROCFS_POWER |
84 | extern struct proc_dir_entry *acpi_lock_battery_dir(void); | |
85 | extern void *acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir); | |
3a670cc7 LT |
86 | #endif |
87 | ||
1ba90e3a TR |
88 | static const struct acpi_device_id battery_device_ids[] = { |
89 | {"PNP0C0A", 0}, | |
90 | {"", 0}, | |
91 | }; | |
1ba90e3a | 92 | |
aa650bbd | 93 | MODULE_DEVICE_TABLE(acpi, battery_device_ids); |
1da177e4 | 94 | |
dccfae6d HG |
95 | /* Lists of PMIC ACPI HIDs with an (often better) native battery driver */ |
96 | static const char * const acpi_battery_blacklist[] = { | |
97 | "INT33F4", /* X-Powers AXP288 PMIC */ | |
98 | }; | |
99 | ||
7b3bcc4a AS |
100 | enum { |
101 | ACPI_BATTERY_ALARM_PRESENT, | |
c67fcd67 | 102 | ACPI_BATTERY_XINFO_PRESENT, |
557d5868 | 103 | ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, |
4000e626 KI |
104 | /* On Lenovo Thinkpad models from 2010 and 2011, the power unit |
105 | switches between mWh and mAh depending on whether the system | |
106 | is running on battery or not. When mAh is the unit, most | |
107 | reported values are incorrect and need to be adjusted by | |
108 | 10000/design_voltage. Verified on x201, t410, t410s, and x220. | |
109 | Pre-2010 and 2012 models appear to always report in mWh and | |
110 | are thus unaffected (tested with t42, t61, t500, x200, x300, | |
111 | and x230). Also, in mid-2012 Lenovo issued a BIOS update for | |
112 | the 2011 models that fixes the issue (tested on x220 with a | |
113 | post-1.29 BIOS), but as of Nov. 2012, no such update is | |
114 | available for the 2010 models. */ | |
115 | ACPI_BATTERY_QUIRK_THINKPAD_MAH, | |
a20136a6 LT |
116 | /* for batteries reporting current capacity with design capacity |
117 | * on a full charge, but showing degradation in full charge cap. | |
118 | */ | |
119 | ACPI_BATTERY_QUIRK_DEGRADED_FULL_CHARGE, | |
7b3bcc4a | 120 | }; |
78490d82 | 121 | |
1da177e4 | 122 | struct acpi_battery { |
038fdea2 | 123 | struct mutex lock; |
69d94ec6 | 124 | struct mutex sysfs_lock; |
297d716f KK |
125 | struct power_supply *bat; |
126 | struct power_supply_desc bat_desc; | |
f1d4661a | 127 | struct acpi_device *device; |
25be5821 | 128 | struct notifier_block pm_nb; |
fa93854f | 129 | struct list_head list; |
f1d4661a | 130 | unsigned long update_time; |
016d5baa | 131 | int revision; |
7faa144a | 132 | int rate_now; |
d7380965 AS |
133 | int capacity_now; |
134 | int voltage_now; | |
038fdea2 | 135 | int design_capacity; |
d7380965 | 136 | int full_charge_capacity; |
038fdea2 AS |
137 | int technology; |
138 | int design_voltage; | |
139 | int design_capacity_warning; | |
140 | int design_capacity_low; | |
c67fcd67 AS |
141 | int cycle_count; |
142 | int measurement_accuracy; | |
143 | int max_sampling_time; | |
144 | int min_sampling_time; | |
145 | int max_averaging_interval; | |
146 | int min_averaging_interval; | |
038fdea2 AS |
147 | int capacity_granularity_1; |
148 | int capacity_granularity_2; | |
f1d4661a | 149 | int alarm; |
038fdea2 AS |
150 | char model_number[32]; |
151 | char serial_number[32]; | |
152 | char type[32]; | |
153 | char oem_info[32]; | |
f1d4661a AS |
154 | int state; |
155 | int power_unit; | |
7b3bcc4a | 156 | unsigned long flags; |
1da177e4 LT |
157 | }; |
158 | ||
297d716f | 159 | #define to_acpi_battery(x) power_supply_get_drvdata(x) |
d7380965 | 160 | |
efd941f1 | 161 | static inline int acpi_battery_present(struct acpi_battery *battery) |
b6ce4083 | 162 | { |
78490d82 AS |
163 | return battery->device->status.battery_present; |
164 | } | |
038fdea2 | 165 | |
d7380965 AS |
166 | static int acpi_battery_technology(struct acpi_battery *battery) |
167 | { | |
168 | if (!strcasecmp("NiCd", battery->type)) | |
169 | return POWER_SUPPLY_TECHNOLOGY_NiCd; | |
170 | if (!strcasecmp("NiMH", battery->type)) | |
171 | return POWER_SUPPLY_TECHNOLOGY_NiMH; | |
172 | if (!strcasecmp("LION", battery->type)) | |
173 | return POWER_SUPPLY_TECHNOLOGY_LION; | |
ad40e68b | 174 | if (!strncasecmp("LI-ION", battery->type, 6)) |
0bde7eee | 175 | return POWER_SUPPLY_TECHNOLOGY_LION; |
d7380965 AS |
176 | if (!strcasecmp("LiP", battery->type)) |
177 | return POWER_SUPPLY_TECHNOLOGY_LIPO; | |
178 | return POWER_SUPPLY_TECHNOLOGY_UNKNOWN; | |
179 | } | |
180 | ||
9104476e | 181 | static int acpi_battery_get_state(struct acpi_battery *battery); |
b19073a0 | 182 | |
56f382a0 RH |
183 | static int acpi_battery_is_charged(struct acpi_battery *battery) |
184 | { | |
1ac5aaa6 | 185 | /* charging, discharging or critical low */ |
56f382a0 RH |
186 | if (battery->state != 0) |
187 | return 0; | |
188 | ||
189 | /* battery not reporting charge */ | |
190 | if (battery->capacity_now == ACPI_BATTERY_VALUE_UNKNOWN || | |
191 | battery->capacity_now == 0) | |
192 | return 0; | |
193 | ||
194 | /* good batteries update full_charge as the batteries degrade */ | |
195 | if (battery->full_charge_capacity == battery->capacity_now) | |
196 | return 1; | |
197 | ||
198 | /* fallback to using design values for broken batteries */ | |
199 | if (battery->design_capacity == battery->capacity_now) | |
200 | return 1; | |
201 | ||
202 | /* we don't do any sort of metric based on percentages */ | |
203 | return 0; | |
204 | } | |
205 | ||
a20136a6 LT |
206 | static bool acpi_battery_is_degraded(struct acpi_battery *battery) |
207 | { | |
208 | return battery->full_charge_capacity && battery->design_capacity && | |
209 | battery->full_charge_capacity < battery->design_capacity; | |
210 | } | |
211 | ||
19fffc84 HG |
212 | static int acpi_battery_handle_discharging(struct acpi_battery *battery) |
213 | { | |
214 | /* | |
215 | * Some devices wrongly report discharging if the battery's charge level | |
216 | * was above the device's start charging threshold atm the AC adapter | |
217 | * was plugged in and the device thus did not start a new charge cycle. | |
218 | */ | |
1b799c5c HG |
219 | if ((battery_ac_is_broken || power_supply_is_system_supplied()) && |
220 | battery->rate_now == 0) | |
19fffc84 HG |
221 | return POWER_SUPPLY_STATUS_NOT_CHARGING; |
222 | ||
223 | return POWER_SUPPLY_STATUS_DISCHARGING; | |
224 | } | |
225 | ||
d7380965 AS |
226 | static int acpi_battery_get_property(struct power_supply *psy, |
227 | enum power_supply_property psp, | |
228 | union power_supply_propval *val) | |
229 | { | |
a1b4bd69 | 230 | int ret = 0; |
d7380965 AS |
231 | struct acpi_battery *battery = to_acpi_battery(psy); |
232 | ||
9104476e AS |
233 | if (acpi_battery_present(battery)) { |
234 | /* run battery update only if it is present */ | |
235 | acpi_battery_get_state(battery); | |
236 | } else if (psp != POWER_SUPPLY_PROP_PRESENT) | |
d7380965 AS |
237 | return -ENODEV; |
238 | switch (psp) { | |
239 | case POWER_SUPPLY_PROP_STATUS: | |
82bf43b2 | 240 | if (battery->state & ACPI_BATTERY_STATE_DISCHARGING) |
19fffc84 | 241 | val->intval = acpi_battery_handle_discharging(battery); |
82bf43b2 | 242 | else if (battery->state & ACPI_BATTERY_STATE_CHARGING) |
d7380965 | 243 | val->intval = POWER_SUPPLY_STATUS_CHARGING; |
56f382a0 | 244 | else if (acpi_battery_is_charged(battery)) |
d7380965 | 245 | val->intval = POWER_SUPPLY_STATUS_FULL; |
4c41d3ad RD |
246 | else |
247 | val->intval = POWER_SUPPLY_STATUS_UNKNOWN; | |
d7380965 AS |
248 | break; |
249 | case POWER_SUPPLY_PROP_PRESENT: | |
250 | val->intval = acpi_battery_present(battery); | |
251 | break; | |
252 | case POWER_SUPPLY_PROP_TECHNOLOGY: | |
253 | val->intval = acpi_battery_technology(battery); | |
254 | break; | |
c67fcd67 AS |
255 | case POWER_SUPPLY_PROP_CYCLE_COUNT: |
256 | val->intval = battery->cycle_count; | |
257 | break; | |
d7380965 | 258 | case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: |
a1b4bd69 RW |
259 | if (battery->design_voltage == ACPI_BATTERY_VALUE_UNKNOWN) |
260 | ret = -ENODEV; | |
261 | else | |
262 | val->intval = battery->design_voltage * 1000; | |
d7380965 AS |
263 | break; |
264 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
a1b4bd69 RW |
265 | if (battery->voltage_now == ACPI_BATTERY_VALUE_UNKNOWN) |
266 | ret = -ENODEV; | |
267 | else | |
268 | val->intval = battery->voltage_now * 1000; | |
d7380965 AS |
269 | break; |
270 | case POWER_SUPPLY_PROP_CURRENT_NOW: | |
7faa144a | 271 | case POWER_SUPPLY_PROP_POWER_NOW: |
a1b4bd69 RW |
272 | if (battery->rate_now == ACPI_BATTERY_VALUE_UNKNOWN) |
273 | ret = -ENODEV; | |
274 | else | |
275 | val->intval = battery->rate_now * 1000; | |
d7380965 AS |
276 | break; |
277 | case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: | |
278 | case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: | |
a1b4bd69 RW |
279 | if (battery->design_capacity == ACPI_BATTERY_VALUE_UNKNOWN) |
280 | ret = -ENODEV; | |
281 | else | |
282 | val->intval = battery->design_capacity * 1000; | |
d7380965 AS |
283 | break; |
284 | case POWER_SUPPLY_PROP_CHARGE_FULL: | |
285 | case POWER_SUPPLY_PROP_ENERGY_FULL: | |
a1b4bd69 RW |
286 | if (battery->full_charge_capacity == ACPI_BATTERY_VALUE_UNKNOWN) |
287 | ret = -ENODEV; | |
288 | else | |
289 | val->intval = battery->full_charge_capacity * 1000; | |
d7380965 AS |
290 | break; |
291 | case POWER_SUPPLY_PROP_CHARGE_NOW: | |
292 | case POWER_SUPPLY_PROP_ENERGY_NOW: | |
a1b4bd69 RW |
293 | if (battery->capacity_now == ACPI_BATTERY_VALUE_UNKNOWN) |
294 | ret = -ENODEV; | |
295 | else | |
296 | val->intval = battery->capacity_now * 1000; | |
d7380965 | 297 | break; |
a58e1150 | 298 | case POWER_SUPPLY_PROP_CAPACITY: |
299 | if (battery->capacity_now && battery->full_charge_capacity) | |
300 | val->intval = battery->capacity_now * 100/ | |
301 | battery->full_charge_capacity; | |
302 | else | |
303 | val->intval = 0; | |
304 | break; | |
1ac5aaa6 ZR |
305 | case POWER_SUPPLY_PROP_CAPACITY_LEVEL: |
306 | if (battery->state & ACPI_BATTERY_STATE_CRITICAL) | |
307 | val->intval = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; | |
308 | else if (test_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags) && | |
309 | (battery->capacity_now <= battery->alarm)) | |
310 | val->intval = POWER_SUPPLY_CAPACITY_LEVEL_LOW; | |
311 | else if (acpi_battery_is_charged(battery)) | |
312 | val->intval = POWER_SUPPLY_CAPACITY_LEVEL_FULL; | |
313 | else | |
314 | val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; | |
315 | break; | |
d7380965 AS |
316 | case POWER_SUPPLY_PROP_MODEL_NAME: |
317 | val->strval = battery->model_number; | |
318 | break; | |
319 | case POWER_SUPPLY_PROP_MANUFACTURER: | |
320 | val->strval = battery->oem_info; | |
321 | break; | |
7c2670bb | 322 | case POWER_SUPPLY_PROP_SERIAL_NUMBER: |
323 | val->strval = battery->serial_number; | |
324 | break; | |
d7380965 | 325 | default: |
a1b4bd69 | 326 | ret = -EINVAL; |
d7380965 | 327 | } |
a1b4bd69 | 328 | return ret; |
d7380965 AS |
329 | } |
330 | ||
331 | static enum power_supply_property charge_battery_props[] = { | |
332 | POWER_SUPPLY_PROP_STATUS, | |
333 | POWER_SUPPLY_PROP_PRESENT, | |
334 | POWER_SUPPLY_PROP_TECHNOLOGY, | |
c67fcd67 | 335 | POWER_SUPPLY_PROP_CYCLE_COUNT, |
d7380965 AS |
336 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, |
337 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
338 | POWER_SUPPLY_PROP_CURRENT_NOW, | |
339 | POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, | |
340 | POWER_SUPPLY_PROP_CHARGE_FULL, | |
341 | POWER_SUPPLY_PROP_CHARGE_NOW, | |
a58e1150 | 342 | POWER_SUPPLY_PROP_CAPACITY, |
1ac5aaa6 | 343 | POWER_SUPPLY_PROP_CAPACITY_LEVEL, |
d7380965 AS |
344 | POWER_SUPPLY_PROP_MODEL_NAME, |
345 | POWER_SUPPLY_PROP_MANUFACTURER, | |
7c2670bb | 346 | POWER_SUPPLY_PROP_SERIAL_NUMBER, |
d7380965 AS |
347 | }; |
348 | ||
349 | static enum power_supply_property energy_battery_props[] = { | |
350 | POWER_SUPPLY_PROP_STATUS, | |
351 | POWER_SUPPLY_PROP_PRESENT, | |
352 | POWER_SUPPLY_PROP_TECHNOLOGY, | |
c67fcd67 | 353 | POWER_SUPPLY_PROP_CYCLE_COUNT, |
d7380965 AS |
354 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, |
355 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
7faa144a | 356 | POWER_SUPPLY_PROP_POWER_NOW, |
d7380965 AS |
357 | POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, |
358 | POWER_SUPPLY_PROP_ENERGY_FULL, | |
359 | POWER_SUPPLY_PROP_ENERGY_NOW, | |
a58e1150 | 360 | POWER_SUPPLY_PROP_CAPACITY, |
1ac5aaa6 | 361 | POWER_SUPPLY_PROP_CAPACITY_LEVEL, |
d7380965 AS |
362 | POWER_SUPPLY_PROP_MODEL_NAME, |
363 | POWER_SUPPLY_PROP_MANUFACTURER, | |
7c2670bb | 364 | POWER_SUPPLY_PROP_SERIAL_NUMBER, |
d7380965 AS |
365 | }; |
366 | ||
b41901a2 HG |
367 | static enum power_supply_property energy_battery_full_cap_broken_props[] = { |
368 | POWER_SUPPLY_PROP_STATUS, | |
369 | POWER_SUPPLY_PROP_PRESENT, | |
370 | POWER_SUPPLY_PROP_TECHNOLOGY, | |
371 | POWER_SUPPLY_PROP_CYCLE_COUNT, | |
372 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, | |
373 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
374 | POWER_SUPPLY_PROP_POWER_NOW, | |
375 | POWER_SUPPLY_PROP_ENERGY_NOW, | |
376 | POWER_SUPPLY_PROP_MODEL_NAME, | |
377 | POWER_SUPPLY_PROP_MANUFACTURER, | |
378 | POWER_SUPPLY_PROP_SERIAL_NUMBER, | |
379 | }; | |
380 | ||
78490d82 AS |
381 | /* -------------------------------------------------------------------------- |
382 | Battery Management | |
383 | -------------------------------------------------------------------------- */ | |
038fdea2 AS |
384 | struct acpi_offsets { |
385 | size_t offset; /* offset inside struct acpi_sbs_battery */ | |
386 | u8 mode; /* int or string? */ | |
387 | }; | |
b6ce4083 | 388 | |
a4658784 | 389 | static const struct acpi_offsets state_offsets[] = { |
038fdea2 | 390 | {offsetof(struct acpi_battery, state), 0}, |
7faa144a | 391 | {offsetof(struct acpi_battery, rate_now), 0}, |
d7380965 AS |
392 | {offsetof(struct acpi_battery, capacity_now), 0}, |
393 | {offsetof(struct acpi_battery, voltage_now), 0}, | |
038fdea2 | 394 | }; |
b6ce4083 | 395 | |
a4658784 | 396 | static const struct acpi_offsets info_offsets[] = { |
038fdea2 AS |
397 | {offsetof(struct acpi_battery, power_unit), 0}, |
398 | {offsetof(struct acpi_battery, design_capacity), 0}, | |
d7380965 | 399 | {offsetof(struct acpi_battery, full_charge_capacity), 0}, |
038fdea2 AS |
400 | {offsetof(struct acpi_battery, technology), 0}, |
401 | {offsetof(struct acpi_battery, design_voltage), 0}, | |
402 | {offsetof(struct acpi_battery, design_capacity_warning), 0}, | |
403 | {offsetof(struct acpi_battery, design_capacity_low), 0}, | |
404 | {offsetof(struct acpi_battery, capacity_granularity_1), 0}, | |
405 | {offsetof(struct acpi_battery, capacity_granularity_2), 0}, | |
406 | {offsetof(struct acpi_battery, model_number), 1}, | |
407 | {offsetof(struct acpi_battery, serial_number), 1}, | |
408 | {offsetof(struct acpi_battery, type), 1}, | |
409 | {offsetof(struct acpi_battery, oem_info), 1}, | |
410 | }; | |
b6ce4083 | 411 | |
a4658784 | 412 | static const struct acpi_offsets extended_info_offsets[] = { |
016d5baa | 413 | {offsetof(struct acpi_battery, revision), 0}, |
c67fcd67 AS |
414 | {offsetof(struct acpi_battery, power_unit), 0}, |
415 | {offsetof(struct acpi_battery, design_capacity), 0}, | |
416 | {offsetof(struct acpi_battery, full_charge_capacity), 0}, | |
417 | {offsetof(struct acpi_battery, technology), 0}, | |
418 | {offsetof(struct acpi_battery, design_voltage), 0}, | |
419 | {offsetof(struct acpi_battery, design_capacity_warning), 0}, | |
420 | {offsetof(struct acpi_battery, design_capacity_low), 0}, | |
421 | {offsetof(struct acpi_battery, cycle_count), 0}, | |
422 | {offsetof(struct acpi_battery, measurement_accuracy), 0}, | |
423 | {offsetof(struct acpi_battery, max_sampling_time), 0}, | |
424 | {offsetof(struct acpi_battery, min_sampling_time), 0}, | |
425 | {offsetof(struct acpi_battery, max_averaging_interval), 0}, | |
426 | {offsetof(struct acpi_battery, min_averaging_interval), 0}, | |
427 | {offsetof(struct acpi_battery, capacity_granularity_1), 0}, | |
428 | {offsetof(struct acpi_battery, capacity_granularity_2), 0}, | |
429 | {offsetof(struct acpi_battery, model_number), 1}, | |
430 | {offsetof(struct acpi_battery, serial_number), 1}, | |
431 | {offsetof(struct acpi_battery, type), 1}, | |
432 | {offsetof(struct acpi_battery, oem_info), 1}, | |
433 | }; | |
434 | ||
038fdea2 AS |
435 | static int extract_package(struct acpi_battery *battery, |
436 | union acpi_object *package, | |
a4658784 | 437 | const struct acpi_offsets *offsets, int num) |
038fdea2 | 438 | { |
106449e8 | 439 | int i; |
038fdea2 AS |
440 | union acpi_object *element; |
441 | if (package->type != ACPI_TYPE_PACKAGE) | |
442 | return -EFAULT; | |
443 | for (i = 0; i < num; ++i) { | |
444 | if (package->package.count <= i) | |
445 | return -EFAULT; | |
446 | element = &package->package.elements[i]; | |
447 | if (offsets[i].mode) { | |
106449e8 AS |
448 | u8 *ptr = (u8 *)battery + offsets[i].offset; |
449 | if (element->type == ACPI_TYPE_STRING || | |
450 | element->type == ACPI_TYPE_BUFFER) | |
451 | strncpy(ptr, element->string.pointer, 32); | |
452 | else if (element->type == ACPI_TYPE_INTEGER) { | |
453 | strncpy(ptr, (u8 *)&element->integer.value, | |
439913ff LM |
454 | sizeof(u64)); |
455 | ptr[sizeof(u64)] = 0; | |
b8a1bdb1 AS |
456 | } else |
457 | *ptr = 0; /* don't have value */ | |
038fdea2 | 458 | } else { |
b8a1bdb1 AS |
459 | int *x = (int *)((u8 *)battery + offsets[i].offset); |
460 | *x = (element->type == ACPI_TYPE_INTEGER) ? | |
461 | element->integer.value : -1; | |
038fdea2 | 462 | } |
b6ce4083 | 463 | } |
b6ce4083 VL |
464 | return 0; |
465 | } | |
466 | ||
467 | static int acpi_battery_get_status(struct acpi_battery *battery) | |
468 | { | |
aa650bbd | 469 | if (acpi_bus_get_status(battery->device)) { |
b6ce4083 VL |
470 | ACPI_EXCEPTION((AE_INFO, AE_ERROR, "Evaluating _STA")); |
471 | return -ENODEV; | |
472 | } | |
aa650bbd | 473 | return 0; |
b6ce4083 VL |
474 | } |
475 | ||
2d09af4a DL |
476 | |
477 | static int extract_battery_info(const int use_bix, | |
478 | struct acpi_battery *battery, | |
479 | const struct acpi_buffer *buffer) | |
1da177e4 | 480 | { |
aa650bbd | 481 | int result = -EFAULT; |
1da177e4 | 482 | |
2d09af4a DL |
483 | if (use_bix && battery_bix_broken_package) |
484 | result = extract_package(battery, buffer->pointer, | |
a90b4038 LT |
485 | extended_info_offsets + 1, |
486 | ARRAY_SIZE(extended_info_offsets) - 1); | |
2d09af4a DL |
487 | else if (use_bix) |
488 | result = extract_package(battery, buffer->pointer, | |
c67fcd67 AS |
489 | extended_info_offsets, |
490 | ARRAY_SIZE(extended_info_offsets)); | |
491 | else | |
2d09af4a | 492 | result = extract_package(battery, buffer->pointer, |
c67fcd67 | 493 | info_offsets, ARRAY_SIZE(info_offsets)); |
557d5868 ZR |
494 | if (test_bit(ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, &battery->flags)) |
495 | battery->full_charge_capacity = battery->design_capacity; | |
4000e626 KI |
496 | if (test_bit(ACPI_BATTERY_QUIRK_THINKPAD_MAH, &battery->flags) && |
497 | battery->power_unit && battery->design_voltage) { | |
498 | battery->design_capacity = battery->design_capacity * | |
499 | 10000 / battery->design_voltage; | |
500 | battery->full_charge_capacity = battery->full_charge_capacity * | |
501 | 10000 / battery->design_voltage; | |
502 | battery->design_capacity_warning = | |
503 | battery->design_capacity_warning * | |
504 | 10000 / battery->design_voltage; | |
505 | /* Curiously, design_capacity_low, unlike the rest of them, | |
506 | is correct. */ | |
507 | /* capacity_granularity_* equal 1 on the systems tested, so | |
508 | it's impossible to tell if they would need an adjustment | |
509 | or not if their values were higher. */ | |
510 | } | |
a20136a6 LT |
511 | if (test_bit(ACPI_BATTERY_QUIRK_DEGRADED_FULL_CHARGE, &battery->flags) && |
512 | battery->capacity_now > battery->full_charge_capacity) | |
513 | battery->capacity_now = battery->full_charge_capacity; | |
514 | ||
d550d98d | 515 | return result; |
1da177e4 LT |
516 | } |
517 | ||
2d09af4a DL |
518 | static int acpi_battery_get_info(struct acpi_battery *battery) |
519 | { | |
520 | const int xinfo = test_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags); | |
521 | int use_bix; | |
522 | int result = -ENODEV; | |
523 | ||
524 | if (!acpi_battery_present(battery)) | |
525 | return 0; | |
526 | ||
527 | ||
528 | for (use_bix = xinfo ? 1 : 0; use_bix >= 0; use_bix--) { | |
529 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
530 | acpi_status status = AE_ERROR; | |
531 | ||
532 | mutex_lock(&battery->lock); | |
533 | status = acpi_evaluate_object(battery->device->handle, | |
534 | use_bix ? "_BIX":"_BIF", | |
535 | NULL, &buffer); | |
536 | mutex_unlock(&battery->lock); | |
537 | ||
538 | if (ACPI_FAILURE(status)) { | |
539 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating %s", | |
540 | use_bix ? "_BIX":"_BIF")); | |
541 | } else { | |
542 | result = extract_battery_info(use_bix, | |
543 | battery, | |
544 | &buffer); | |
545 | ||
546 | kfree(buffer.pointer); | |
547 | break; | |
548 | } | |
549 | } | |
550 | ||
551 | if (!result && !use_bix && xinfo) | |
552 | pr_warn(FW_BUG "The _BIX method is broken, using _BIF.\n"); | |
553 | ||
554 | return result; | |
555 | } | |
556 | ||
b6ce4083 | 557 | static int acpi_battery_get_state(struct acpi_battery *battery) |
1da177e4 | 558 | { |
4be44fcd LB |
559 | int result = 0; |
560 | acpi_status status = 0; | |
561 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
1da177e4 | 562 | |
b6ce4083 VL |
563 | if (!acpi_battery_present(battery)) |
564 | return 0; | |
1da177e4 | 565 | |
f1d4661a AS |
566 | if (battery->update_time && |
567 | time_before(jiffies, battery->update_time + | |
568 | msecs_to_jiffies(cache_time))) | |
569 | return 0; | |
570 | ||
038fdea2 | 571 | mutex_lock(&battery->lock); |
f1d4661a | 572 | status = acpi_evaluate_object(battery->device->handle, "_BST", |
038fdea2 AS |
573 | NULL, &buffer); |
574 | mutex_unlock(&battery->lock); | |
5b31d895 | 575 | |
1da177e4 | 576 | if (ACPI_FAILURE(status)) { |
a6fc6720 | 577 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BST")); |
d550d98d | 578 | return -ENODEV; |
1da177e4 | 579 | } |
aa650bbd | 580 | |
038fdea2 AS |
581 | result = extract_package(battery, buffer.pointer, |
582 | state_offsets, ARRAY_SIZE(state_offsets)); | |
f1d4661a | 583 | battery->update_time = jiffies; |
78490d82 | 584 | kfree(buffer.pointer); |
bc76f90b | 585 | |
55003b21 LT |
586 | /* For buggy DSDTs that report negative 16-bit values for either |
587 | * charging or discharging current and/or report 0 as 65536 | |
588 | * due to bad math. | |
589 | */ | |
590 | if (battery->power_unit == ACPI_BATTERY_POWER_UNIT_MA && | |
591 | battery->rate_now != ACPI_BATTERY_VALUE_UNKNOWN && | |
592 | (s16)(battery->rate_now) < 0) { | |
bc76f90b | 593 | battery->rate_now = abs((s16)battery->rate_now); |
dd1fca9e | 594 | pr_warn_once(FW_BUG "battery: (dis)charge rate invalid.\n"); |
55003b21 | 595 | } |
bc76f90b | 596 | |
557d5868 ZR |
597 | if (test_bit(ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, &battery->flags) |
598 | && battery->capacity_now >= 0 && battery->capacity_now <= 100) | |
599 | battery->capacity_now = (battery->capacity_now * | |
600 | battery->full_charge_capacity) / 100; | |
4000e626 KI |
601 | if (test_bit(ACPI_BATTERY_QUIRK_THINKPAD_MAH, &battery->flags) && |
602 | battery->power_unit && battery->design_voltage) { | |
603 | battery->capacity_now = battery->capacity_now * | |
604 | 10000 / battery->design_voltage; | |
605 | } | |
a20136a6 LT |
606 | if (test_bit(ACPI_BATTERY_QUIRK_DEGRADED_FULL_CHARGE, &battery->flags) && |
607 | battery->capacity_now > battery->full_charge_capacity) | |
608 | battery->capacity_now = battery->full_charge_capacity; | |
609 | ||
b6ce4083 VL |
610 | return result; |
611 | } | |
1da177e4 | 612 | |
aa650bbd | 613 | static int acpi_battery_set_alarm(struct acpi_battery *battery) |
1da177e4 | 614 | { |
4be44fcd | 615 | acpi_status status = 0; |
1da177e4 | 616 | |
c67fcd67 | 617 | if (!acpi_battery_present(battery) || |
7b3bcc4a | 618 | !test_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags)) |
d550d98d | 619 | return -ENODEV; |
1da177e4 | 620 | |
038fdea2 | 621 | mutex_lock(&battery->lock); |
0db98202 JL |
622 | status = acpi_execute_simple_method(battery->device->handle, "_BTP", |
623 | battery->alarm); | |
038fdea2 | 624 | mutex_unlock(&battery->lock); |
aa650bbd | 625 | |
1da177e4 | 626 | if (ACPI_FAILURE(status)) |
d550d98d | 627 | return -ENODEV; |
1da177e4 | 628 | |
aa650bbd | 629 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Alarm set to %d\n", battery->alarm)); |
d550d98d | 630 | return 0; |
1da177e4 LT |
631 | } |
632 | ||
b6ce4083 | 633 | static int acpi_battery_init_alarm(struct acpi_battery *battery) |
1da177e4 | 634 | { |
b6ce4083 | 635 | /* See if alarms are supported, and if so, set default */ |
952c63e9 | 636 | if (!acpi_has_method(battery->device->handle, "_BTP")) { |
7b3bcc4a | 637 | clear_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags); |
f1d4661a | 638 | return 0; |
b6ce4083 | 639 | } |
7b3bcc4a | 640 | set_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags); |
f1d4661a AS |
641 | if (!battery->alarm) |
642 | battery->alarm = battery->design_capacity_warning; | |
aa650bbd | 643 | return acpi_battery_set_alarm(battery); |
b6ce4083 | 644 | } |
1da177e4 | 645 | |
508df92d AB |
646 | static ssize_t acpi_battery_alarm_show(struct device *dev, |
647 | struct device_attribute *attr, | |
648 | char *buf) | |
649 | { | |
650 | struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev)); | |
651 | return sprintf(buf, "%d\n", battery->alarm * 1000); | |
652 | } | |
653 | ||
654 | static ssize_t acpi_battery_alarm_store(struct device *dev, | |
655 | struct device_attribute *attr, | |
656 | const char *buf, size_t count) | |
657 | { | |
658 | unsigned long x; | |
659 | struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev)); | |
47a08c85 | 660 | if (sscanf(buf, "%lu\n", &x) == 1) |
508df92d AB |
661 | battery->alarm = x/1000; |
662 | if (acpi_battery_present(battery)) | |
663 | acpi_battery_set_alarm(battery); | |
664 | return count; | |
665 | } | |
666 | ||
82d2b610 | 667 | static const struct device_attribute alarm_attr = { |
01e8ef11 | 668 | .attr = {.name = "alarm", .mode = 0644}, |
508df92d AB |
669 | .show = acpi_battery_alarm_show, |
670 | .store = acpi_battery_alarm_store, | |
671 | }; | |
672 | ||
fa93854f OG |
673 | /* |
674 | * The Battery Hooking API | |
675 | * | |
676 | * This API is used inside other drivers that need to expose | |
677 | * platform-specific behaviour within the generic driver in a | |
678 | * generic way. | |
679 | * | |
680 | */ | |
681 | ||
682 | static LIST_HEAD(acpi_battery_list); | |
683 | static LIST_HEAD(battery_hook_list); | |
684 | static DEFINE_MUTEX(hook_mutex); | |
685 | ||
514bcc5d | 686 | static void __battery_hook_unregister(struct acpi_battery_hook *hook, int lock) |
fa93854f OG |
687 | { |
688 | struct acpi_battery *battery; | |
689 | /* | |
690 | * In order to remove a hook, we first need to | |
691 | * de-register all the batteries that are registered. | |
692 | */ | |
693 | if (lock) | |
694 | mutex_lock(&hook_mutex); | |
695 | list_for_each_entry(battery, &acpi_battery_list, list) { | |
696 | hook->remove_battery(battery->bat); | |
697 | } | |
698 | list_del(&hook->list); | |
699 | if (lock) | |
700 | mutex_unlock(&hook_mutex); | |
701 | pr_info("extension unregistered: %s\n", hook->name); | |
702 | } | |
703 | ||
704 | void battery_hook_unregister(struct acpi_battery_hook *hook) | |
705 | { | |
706 | __battery_hook_unregister(hook, 1); | |
707 | } | |
708 | EXPORT_SYMBOL_GPL(battery_hook_unregister); | |
709 | ||
710 | void battery_hook_register(struct acpi_battery_hook *hook) | |
711 | { | |
712 | struct acpi_battery *battery; | |
713 | ||
714 | mutex_lock(&hook_mutex); | |
715 | INIT_LIST_HEAD(&hook->list); | |
716 | list_add(&hook->list, &battery_hook_list); | |
717 | /* | |
718 | * Now that the driver is registered, we need | |
719 | * to notify the hook that a battery is available | |
720 | * for each battery, so that the driver may add | |
721 | * its attributes. | |
722 | */ | |
723 | list_for_each_entry(battery, &acpi_battery_list, list) { | |
724 | if (hook->add_battery(battery->bat)) { | |
725 | /* | |
726 | * If a add-battery returns non-zero, | |
727 | * the registration of the extension has failed, | |
728 | * and we will not add it to the list of loaded | |
729 | * hooks. | |
730 | */ | |
731 | pr_err("extension failed to load: %s", hook->name); | |
732 | __battery_hook_unregister(hook, 0); | |
673b4271 | 733 | goto end; |
fa93854f OG |
734 | } |
735 | } | |
736 | pr_info("new extension: %s\n", hook->name); | |
673b4271 | 737 | end: |
fa93854f OG |
738 | mutex_unlock(&hook_mutex); |
739 | } | |
740 | EXPORT_SYMBOL_GPL(battery_hook_register); | |
741 | ||
742 | /* | |
743 | * This function gets called right after the battery sysfs | |
744 | * attributes have been added, so that the drivers that | |
745 | * define custom sysfs attributes can add their own. | |
7a4ea10c | 746 | */ |
fa93854f OG |
747 | static void battery_hook_add_battery(struct acpi_battery *battery) |
748 | { | |
673b4271 | 749 | struct acpi_battery_hook *hook_node, *tmp; |
fa93854f OG |
750 | |
751 | mutex_lock(&hook_mutex); | |
752 | INIT_LIST_HEAD(&battery->list); | |
753 | list_add(&battery->list, &acpi_battery_list); | |
754 | /* | |
755 | * Since we added a new battery to the list, we need to | |
756 | * iterate over the hooks and call add_battery for each | |
757 | * hook that was registered. This usually happens | |
758 | * when a battery gets hotplugged or initialized | |
759 | * during the battery module initialization. | |
760 | */ | |
673b4271 | 761 | list_for_each_entry_safe(hook_node, tmp, &battery_hook_list, list) { |
fa93854f OG |
762 | if (hook_node->add_battery(battery->bat)) { |
763 | /* | |
764 | * The notification of the extensions has failed, to | |
765 | * prevent further errors we will unload the extension. | |
766 | */ | |
fa93854f OG |
767 | pr_err("error in extension, unloading: %s", |
768 | hook_node->name); | |
673b4271 | 769 | __battery_hook_unregister(hook_node, 0); |
fa93854f OG |
770 | } |
771 | } | |
772 | mutex_unlock(&hook_mutex); | |
773 | } | |
774 | ||
775 | static void battery_hook_remove_battery(struct acpi_battery *battery) | |
776 | { | |
777 | struct acpi_battery_hook *hook; | |
778 | ||
779 | mutex_lock(&hook_mutex); | |
780 | /* | |
781 | * Before removing the hook, we need to remove all | |
782 | * custom attributes from the battery. | |
783 | */ | |
784 | list_for_each_entry(hook, &battery_hook_list, list) { | |
785 | hook->remove_battery(battery->bat); | |
786 | } | |
787 | /* Then, just remove the battery from the list */ | |
788 | list_del(&battery->list); | |
789 | mutex_unlock(&hook_mutex); | |
790 | } | |
791 | ||
792 | static void __exit battery_hook_exit(void) | |
793 | { | |
794 | struct acpi_battery_hook *hook; | |
795 | struct acpi_battery_hook *ptr; | |
796 | /* | |
797 | * At this point, the acpi_bus_unregister_driver() | |
798 | * has called remove for all batteries. We just | |
799 | * need to remove the hooks. | |
800 | */ | |
801 | list_for_each_entry_safe(hook, ptr, &battery_hook_list, list) { | |
802 | __battery_hook_unregister(hook, 1); | |
803 | } | |
804 | mutex_destroy(&hook_mutex); | |
805 | } | |
806 | ||
508df92d AB |
807 | static int sysfs_add_battery(struct acpi_battery *battery) |
808 | { | |
297d716f | 809 | struct power_supply_config psy_cfg = { .drv_data = battery, }; |
508df92d | 810 | |
ae6f6187 | 811 | if (battery->power_unit == ACPI_BATTERY_POWER_UNIT_MA) { |
297d716f KK |
812 | battery->bat_desc.properties = charge_battery_props; |
813 | battery->bat_desc.num_properties = | |
508df92d | 814 | ARRAY_SIZE(charge_battery_props); |
b41901a2 HG |
815 | } else if (battery->full_charge_capacity == 0) { |
816 | battery->bat_desc.properties = | |
817 | energy_battery_full_cap_broken_props; | |
818 | battery->bat_desc.num_properties = | |
819 | ARRAY_SIZE(energy_battery_full_cap_broken_props); | |
508df92d | 820 | } else { |
297d716f KK |
821 | battery->bat_desc.properties = energy_battery_props; |
822 | battery->bat_desc.num_properties = | |
508df92d AB |
823 | ARRAY_SIZE(energy_battery_props); |
824 | } | |
825 | ||
297d716f KK |
826 | battery->bat_desc.name = acpi_device_bid(battery->device); |
827 | battery->bat_desc.type = POWER_SUPPLY_TYPE_BATTERY; | |
828 | battery->bat_desc.get_property = acpi_battery_get_property; | |
508df92d | 829 | |
297d716f KK |
830 | battery->bat = power_supply_register_no_ws(&battery->device->dev, |
831 | &battery->bat_desc, &psy_cfg); | |
e0d1f09e | 832 | |
297d716f KK |
833 | if (IS_ERR(battery->bat)) { |
834 | int result = PTR_ERR(battery->bat); | |
835 | ||
836 | battery->bat = NULL; | |
508df92d | 837 | return result; |
297d716f | 838 | } |
fa93854f | 839 | battery_hook_add_battery(battery); |
297d716f | 840 | return device_create_file(&battery->bat->dev, &alarm_attr); |
508df92d AB |
841 | } |
842 | ||
843 | static void sysfs_remove_battery(struct acpi_battery *battery) | |
844 | { | |
69d94ec6 | 845 | mutex_lock(&battery->sysfs_lock); |
297d716f | 846 | if (!battery->bat) { |
69d94ec6 | 847 | mutex_unlock(&battery->sysfs_lock); |
508df92d | 848 | return; |
9c921c22 | 849 | } |
fa93854f | 850 | battery_hook_remove_battery(battery); |
297d716f KK |
851 | device_remove_file(&battery->bat->dev, &alarm_attr); |
852 | power_supply_unregister(battery->bat); | |
853 | battery->bat = NULL; | |
69d94ec6 | 854 | mutex_unlock(&battery->sysfs_lock); |
bc76f90b HM |
855 | } |
856 | ||
4000e626 KI |
857 | static void find_battery(const struct dmi_header *dm, void *private) |
858 | { | |
859 | struct acpi_battery *battery = (struct acpi_battery *)private; | |
860 | /* Note: the hardcoded offsets below have been extracted from | |
861 | the source code of dmidecode. */ | |
862 | if (dm->type == DMI_ENTRY_PORTABLE_BATTERY && dm->length >= 8) { | |
863 | const u8 *dmi_data = (const u8 *)(dm + 1); | |
864 | int dmi_capacity = get_unaligned((const u16 *)(dmi_data + 6)); | |
865 | if (dm->length >= 18) | |
866 | dmi_capacity *= dmi_data[17]; | |
867 | if (battery->design_capacity * battery->design_voltage / 1000 | |
868 | != dmi_capacity && | |
869 | battery->design_capacity * 10 == dmi_capacity) | |
870 | set_bit(ACPI_BATTERY_QUIRK_THINKPAD_MAH, | |
871 | &battery->flags); | |
872 | } | |
873 | } | |
874 | ||
557d5868 ZR |
875 | /* |
876 | * According to the ACPI spec, some kinds of primary batteries can | |
877 | * report percentage battery remaining capacity directly to OS. | |
878 | * In this case, it reports the Last Full Charged Capacity == 100 | |
879 | * and BatteryPresentRate == 0xFFFFFFFF. | |
880 | * | |
881 | * Now we found some battery reports percentage remaining capacity | |
882 | * even if it's rechargeable. | |
883 | * https://bugzilla.kernel.org/show_bug.cgi?id=15979 | |
884 | * | |
885 | * Handle this correctly so that they won't break userspace. | |
886 | */ | |
7b78622d | 887 | static void acpi_battery_quirks(struct acpi_battery *battery) |
557d5868 ZR |
888 | { |
889 | if (test_bit(ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, &battery->flags)) | |
0f4c6547 | 890 | return; |
557d5868 | 891 | |
0f4c6547 NM |
892 | if (battery->full_charge_capacity == 100 && |
893 | battery->rate_now == ACPI_BATTERY_VALUE_UNKNOWN && | |
894 | battery->capacity_now >= 0 && battery->capacity_now <= 100) { | |
557d5868 ZR |
895 | set_bit(ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, &battery->flags); |
896 | battery->full_charge_capacity = battery->design_capacity; | |
897 | battery->capacity_now = (battery->capacity_now * | |
898 | battery->full_charge_capacity) / 100; | |
899 | } | |
4000e626 KI |
900 | |
901 | if (test_bit(ACPI_BATTERY_QUIRK_THINKPAD_MAH, &battery->flags)) | |
0f4c6547 | 902 | return; |
4000e626 KI |
903 | |
904 | if (battery->power_unit && dmi_name_in_vendors("LENOVO")) { | |
905 | const char *s; | |
906 | s = dmi_get_system_info(DMI_PRODUCT_VERSION); | |
ffd8a731 | 907 | if (s && !strncasecmp(s, "ThinkPad", 8)) { |
4000e626 KI |
908 | dmi_walk(find_battery, battery); |
909 | if (test_bit(ACPI_BATTERY_QUIRK_THINKPAD_MAH, | |
910 | &battery->flags) && | |
911 | battery->design_voltage) { | |
912 | battery->design_capacity = | |
913 | battery->design_capacity * | |
914 | 10000 / battery->design_voltage; | |
915 | battery->full_charge_capacity = | |
916 | battery->full_charge_capacity * | |
917 | 10000 / battery->design_voltage; | |
918 | battery->design_capacity_warning = | |
919 | battery->design_capacity_warning * | |
920 | 10000 / battery->design_voltage; | |
921 | battery->capacity_now = battery->capacity_now * | |
922 | 10000 / battery->design_voltage; | |
923 | } | |
924 | } | |
925 | } | |
a20136a6 LT |
926 | |
927 | if (test_bit(ACPI_BATTERY_QUIRK_DEGRADED_FULL_CHARGE, &battery->flags)) | |
928 | return; | |
929 | ||
930 | if (acpi_battery_is_degraded(battery) && | |
931 | battery->capacity_now > battery->full_charge_capacity) { | |
932 | set_bit(ACPI_BATTERY_QUIRK_DEGRADED_FULL_CHARGE, &battery->flags); | |
933 | battery->capacity_now = battery->full_charge_capacity; | |
934 | } | |
557d5868 ZR |
935 | } |
936 | ||
9e50bc14 | 937 | static int acpi_battery_update(struct acpi_battery *battery, bool resume) |
b6ce4083 | 938 | { |
82f2d305 LRM |
939 | int result = acpi_battery_get_status(battery); |
940 | ||
508df92d | 941 | if (result) |
b6ce4083 | 942 | return result; |
82f2d305 | 943 | |
508df92d AB |
944 | if (!acpi_battery_present(battery)) { |
945 | sysfs_remove_battery(battery); | |
97749cd9 | 946 | battery->update_time = 0; |
508df92d | 947 | return 0; |
b6ce4083 | 948 | } |
9e50bc14 LT |
949 | |
950 | if (resume) | |
951 | return 0; | |
952 | ||
82f2d305 | 953 | if (!battery->update_time) { |
97749cd9 AS |
954 | result = acpi_battery_get_info(battery); |
955 | if (result) | |
956 | return result; | |
957 | acpi_battery_init_alarm(battery); | |
958 | } | |
12c78ca2 CG |
959 | |
960 | result = acpi_battery_get_state(battery); | |
961 | if (result) | |
962 | return result; | |
963 | acpi_battery_quirks(battery); | |
964 | ||
297d716f | 965 | if (!battery->bat) { |
eb03cb02 SH |
966 | result = sysfs_add_battery(battery); |
967 | if (result) | |
968 | return result; | |
969 | } | |
e0d1f09e ZR |
970 | |
971 | /* | |
972 | * Wakeup the system if battery is critical low | |
973 | * or lower than the alarm level | |
974 | */ | |
975 | if ((battery->state & ACPI_BATTERY_STATE_CRITICAL) || | |
976 | (test_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags) && | |
977 | (battery->capacity_now <= battery->alarm))) | |
33e4f80e | 978 | acpi_pm_wakeup_event(&battery->device->dev); |
e0d1f09e | 979 | |
557d5868 | 980 | return result; |
4bd35cdb VL |
981 | } |
982 | ||
da8aeb92 RW |
983 | static void acpi_battery_refresh(struct acpi_battery *battery) |
984 | { | |
c5971456 AW |
985 | int power_unit; |
986 | ||
297d716f | 987 | if (!battery->bat) |
da8aeb92 RW |
988 | return; |
989 | ||
c5971456 AW |
990 | power_unit = battery->power_unit; |
991 | ||
da8aeb92 | 992 | acpi_battery_get_info(battery); |
c5971456 AW |
993 | |
994 | if (power_unit == battery->power_unit) | |
995 | return; | |
996 | ||
997 | /* The battery has changed its reporting units. */ | |
da8aeb92 RW |
998 | sysfs_remove_battery(battery); |
999 | sysfs_add_battery(battery); | |
1000 | } | |
1001 | ||
3a670cc7 LT |
1002 | /* -------------------------------------------------------------------------- |
1003 | FS Interface (/proc) | |
1004 | -------------------------------------------------------------------------- */ | |
1005 | ||
1006 | #ifdef CONFIG_ACPI_PROCFS_POWER | |
1007 | static struct proc_dir_entry *acpi_battery_dir; | |
1008 | ||
27059b91 MK |
1009 | static const char *acpi_battery_units(const struct acpi_battery *battery) |
1010 | { | |
1011 | return (battery->power_unit == ACPI_BATTERY_POWER_UNIT_MA) ? | |
1012 | "mA" : "mW"; | |
1013 | } | |
1014 | ||
e7b087fc | 1015 | static int acpi_battery_info_proc_show(struct seq_file *seq, void *offset) |
3a670cc7 LT |
1016 | { |
1017 | struct acpi_battery *battery = seq->private; | |
e7b087fc | 1018 | int result = acpi_battery_update(battery, false); |
3a670cc7 LT |
1019 | |
1020 | if (result) | |
1021 | goto end; | |
1022 | ||
1023 | seq_printf(seq, "present: %s\n", | |
1024 | acpi_battery_present(battery) ? "yes" : "no"); | |
1025 | if (!acpi_battery_present(battery)) | |
1026 | goto end; | |
1027 | if (battery->design_capacity == ACPI_BATTERY_VALUE_UNKNOWN) | |
1028 | seq_printf(seq, "design capacity: unknown\n"); | |
1029 | else | |
1030 | seq_printf(seq, "design capacity: %d %sh\n", | |
1031 | battery->design_capacity, | |
1032 | acpi_battery_units(battery)); | |
1033 | ||
1034 | if (battery->full_charge_capacity == ACPI_BATTERY_VALUE_UNKNOWN) | |
1035 | seq_printf(seq, "last full capacity: unknown\n"); | |
1036 | else | |
1037 | seq_printf(seq, "last full capacity: %d %sh\n", | |
1038 | battery->full_charge_capacity, | |
1039 | acpi_battery_units(battery)); | |
1040 | ||
1041 | seq_printf(seq, "battery technology: %srechargeable\n", | |
2754435d | 1042 | battery->technology ? "" : "non-"); |
3a670cc7 LT |
1043 | |
1044 | if (battery->design_voltage == ACPI_BATTERY_VALUE_UNKNOWN) | |
1045 | seq_printf(seq, "design voltage: unknown\n"); | |
1046 | else | |
1047 | seq_printf(seq, "design voltage: %d mV\n", | |
1048 | battery->design_voltage); | |
1049 | seq_printf(seq, "design capacity warning: %d %sh\n", | |
1050 | battery->design_capacity_warning, | |
1051 | acpi_battery_units(battery)); | |
1052 | seq_printf(seq, "design capacity low: %d %sh\n", | |
1053 | battery->design_capacity_low, | |
1054 | acpi_battery_units(battery)); | |
1055 | seq_printf(seq, "cycle count: %i\n", battery->cycle_count); | |
1056 | seq_printf(seq, "capacity granularity 1: %d %sh\n", | |
1057 | battery->capacity_granularity_1, | |
1058 | acpi_battery_units(battery)); | |
1059 | seq_printf(seq, "capacity granularity 2: %d %sh\n", | |
1060 | battery->capacity_granularity_2, | |
1061 | acpi_battery_units(battery)); | |
1062 | seq_printf(seq, "model number: %s\n", battery->model_number); | |
1063 | seq_printf(seq, "serial number: %s\n", battery->serial_number); | |
1064 | seq_printf(seq, "battery type: %s\n", battery->type); | |
1065 | seq_printf(seq, "OEM info: %s\n", battery->oem_info); | |
1066 | end: | |
1067 | if (result) | |
1068 | seq_printf(seq, "ERROR: Unable to read battery info\n"); | |
1069 | return result; | |
1070 | } | |
1071 | ||
e7b087fc | 1072 | static int acpi_battery_state_proc_show(struct seq_file *seq, void *offset) |
3a670cc7 LT |
1073 | { |
1074 | struct acpi_battery *battery = seq->private; | |
e7b087fc | 1075 | int result = acpi_battery_update(battery, false); |
3a670cc7 LT |
1076 | |
1077 | if (result) | |
1078 | goto end; | |
1079 | ||
1080 | seq_printf(seq, "present: %s\n", | |
1081 | acpi_battery_present(battery) ? "yes" : "no"); | |
1082 | if (!acpi_battery_present(battery)) | |
1083 | goto end; | |
1084 | ||
1085 | seq_printf(seq, "capacity state: %s\n", | |
1086 | (battery->state & 0x04) ? "critical" : "ok"); | |
1087 | if ((battery->state & 0x01) && (battery->state & 0x02)) | |
1088 | seq_printf(seq, | |
1089 | "charging state: charging/discharging\n"); | |
1090 | else if (battery->state & 0x01) | |
1091 | seq_printf(seq, "charging state: discharging\n"); | |
1092 | else if (battery->state & 0x02) | |
1093 | seq_printf(seq, "charging state: charging\n"); | |
1094 | else | |
1095 | seq_printf(seq, "charging state: charged\n"); | |
1096 | ||
1097 | if (battery->rate_now == ACPI_BATTERY_VALUE_UNKNOWN) | |
1098 | seq_printf(seq, "present rate: unknown\n"); | |
1099 | else | |
1100 | seq_printf(seq, "present rate: %d %s\n", | |
1101 | battery->rate_now, acpi_battery_units(battery)); | |
1102 | ||
1103 | if (battery->capacity_now == ACPI_BATTERY_VALUE_UNKNOWN) | |
1104 | seq_printf(seq, "remaining capacity: unknown\n"); | |
1105 | else | |
1106 | seq_printf(seq, "remaining capacity: %d %sh\n", | |
1107 | battery->capacity_now, acpi_battery_units(battery)); | |
1108 | if (battery->voltage_now == ACPI_BATTERY_VALUE_UNKNOWN) | |
1109 | seq_printf(seq, "present voltage: unknown\n"); | |
1110 | else | |
1111 | seq_printf(seq, "present voltage: %d mV\n", | |
1112 | battery->voltage_now); | |
1113 | end: | |
1114 | if (result) | |
1115 | seq_printf(seq, "ERROR: Unable to read battery state\n"); | |
1116 | ||
1117 | return result; | |
1118 | } | |
1119 | ||
e7b087fc | 1120 | static int acpi_battery_alarm_proc_show(struct seq_file *seq, void *offset) |
3a670cc7 LT |
1121 | { |
1122 | struct acpi_battery *battery = seq->private; | |
e7b087fc | 1123 | int result = acpi_battery_update(battery, false); |
3a670cc7 LT |
1124 | |
1125 | if (result) | |
1126 | goto end; | |
1127 | ||
1128 | if (!acpi_battery_present(battery)) { | |
1129 | seq_printf(seq, "present: no\n"); | |
1130 | goto end; | |
1131 | } | |
1132 | seq_printf(seq, "alarm: "); | |
2754435d | 1133 | if (battery->alarm) { |
3a670cc7 LT |
1134 | seq_printf(seq, "%u %sh\n", battery->alarm, |
1135 | acpi_battery_units(battery)); | |
2754435d DR |
1136 | } else { |
1137 | seq_printf(seq, "unsupported\n"); | |
1138 | } | |
3a670cc7 LT |
1139 | end: |
1140 | if (result) | |
1141 | seq_printf(seq, "ERROR: Unable to read battery alarm\n"); | |
1142 | return result; | |
1143 | } | |
1144 | ||
1145 | static ssize_t acpi_battery_write_alarm(struct file *file, | |
1146 | const char __user * buffer, | |
1147 | size_t count, loff_t * ppos) | |
1148 | { | |
1149 | int result = 0; | |
1150 | char alarm_string[12] = { '\0' }; | |
1151 | struct seq_file *m = file->private_data; | |
1152 | struct acpi_battery *battery = m->private; | |
1153 | ||
1154 | if (!battery || (count > sizeof(alarm_string) - 1)) | |
1155 | return -EINVAL; | |
1156 | if (!acpi_battery_present(battery)) { | |
1157 | result = -ENODEV; | |
1158 | goto end; | |
1159 | } | |
1160 | if (copy_from_user(alarm_string, buffer, count)) { | |
1161 | result = -EFAULT; | |
1162 | goto end; | |
1163 | } | |
1164 | alarm_string[count] = '\0'; | |
3d915894 CJ |
1165 | if (kstrtoint(alarm_string, 0, &battery->alarm)) { |
1166 | result = -EINVAL; | |
1167 | goto end; | |
1168 | } | |
3a670cc7 LT |
1169 | result = acpi_battery_set_alarm(battery); |
1170 | end: | |
2754435d DR |
1171 | if (result) |
1172 | return result; | |
1173 | return count; | |
3a670cc7 LT |
1174 | } |
1175 | ||
e7b087fc | 1176 | static int acpi_battery_alarm_proc_open(struct inode *inode, struct file *file) |
3a670cc7 | 1177 | { |
e7b087fc | 1178 | return single_open(file, acpi_battery_alarm_proc_show, PDE_DATA(inode)); |
3a670cc7 LT |
1179 | } |
1180 | ||
e7b087fc CH |
1181 | static const struct file_operations acpi_battery_alarm_fops = { |
1182 | .owner = THIS_MODULE, | |
1183 | .open = acpi_battery_alarm_proc_open, | |
1184 | .read = seq_read, | |
1185 | .write = acpi_battery_write_alarm, | |
1186 | .llseek = seq_lseek, | |
1187 | .release = single_release, | |
3a670cc7 LT |
1188 | }; |
1189 | ||
3a670cc7 LT |
1190 | static int acpi_battery_add_fs(struct acpi_device *device) |
1191 | { | |
dd1fca9e | 1192 | pr_warning(PREFIX "Deprecated procfs I/F for battery is loaded, please retry with CONFIG_ACPI_PROCFS_POWER cleared\n"); |
3a670cc7 LT |
1193 | if (!acpi_device_dir(device)) { |
1194 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
1195 | acpi_battery_dir); | |
1196 | if (!acpi_device_dir(device)) | |
1197 | return -ENODEV; | |
1198 | } | |
1199 | ||
e7b087fc CH |
1200 | if (!proc_create_single_data("info", S_IRUGO, acpi_device_dir(device), |
1201 | acpi_battery_info_proc_show, acpi_driver_data(device))) | |
1202 | return -ENODEV; | |
1203 | if (!proc_create_single_data("state", S_IRUGO, acpi_device_dir(device), | |
1204 | acpi_battery_state_proc_show, acpi_driver_data(device))) | |
1205 | return -ENODEV; | |
1206 | if (!proc_create_data("alarm", S_IFREG | S_IRUGO | S_IWUSR, | |
1207 | acpi_device_dir(device), &acpi_battery_alarm_fops, | |
1208 | acpi_driver_data(device))) | |
1209 | return -ENODEV; | |
3a670cc7 LT |
1210 | return 0; |
1211 | } | |
1212 | ||
1213 | static void acpi_battery_remove_fs(struct acpi_device *device) | |
1214 | { | |
3a670cc7 LT |
1215 | if (!acpi_device_dir(device)) |
1216 | return; | |
e7b087fc | 1217 | remove_proc_subtree(acpi_device_bid(device), acpi_battery_dir); |
3a670cc7 LT |
1218 | acpi_device_dir(device) = NULL; |
1219 | } | |
1220 | ||
1221 | #endif | |
1222 | ||
1da177e4 LT |
1223 | /* -------------------------------------------------------------------------- |
1224 | Driver Interface | |
1225 | -------------------------------------------------------------------------- */ | |
1226 | ||
d9406691 | 1227 | static void acpi_battery_notify(struct acpi_device *device, u32 event) |
1da177e4 | 1228 | { |
d9406691 | 1229 | struct acpi_battery *battery = acpi_driver_data(device); |
297d716f | 1230 | struct power_supply *old; |
d9406691 | 1231 | |
1da177e4 | 1232 | if (!battery) |
d550d98d | 1233 | return; |
297d716f | 1234 | old = battery->bat; |
f43691c6 AM |
1235 | /* |
1236 | * On Acer Aspire V5-573G notifications are sometimes triggered too | |
1237 | * early. For example, when AC is unplugged and notification is | |
1238 | * triggered, battery state is still reported as "Full", and changes to | |
1239 | * "Discharging" only after short delay, without any notification. | |
1240 | */ | |
1241 | if (battery_notification_delay_ms > 0) | |
1242 | msleep(battery_notification_delay_ms); | |
da8aeb92 RW |
1243 | if (event == ACPI_BATTERY_NOTIFY_INFO) |
1244 | acpi_battery_refresh(battery); | |
9e50bc14 | 1245 | acpi_battery_update(battery, false); |
f1d4661a | 1246 | acpi_bus_generate_netlink_event(device->pnp.device_class, |
0794469d | 1247 | dev_name(&device->dev), event, |
9ea7d575 | 1248 | acpi_battery_present(battery)); |
411e0f77 | 1249 | acpi_notifier_call_chain(device, event, acpi_battery_present(battery)); |
2345baf4 | 1250 | /* acpi_battery_update could remove power_supply object */ |
297d716f KK |
1251 | if (old && battery->bat) |
1252 | power_supply_changed(battery->bat); | |
1da177e4 LT |
1253 | } |
1254 | ||
25be5821 KM |
1255 | static int battery_notify(struct notifier_block *nb, |
1256 | unsigned long mode, void *_unused) | |
1257 | { | |
1258 | struct acpi_battery *battery = container_of(nb, struct acpi_battery, | |
1259 | pm_nb); | |
9e50bc14 LT |
1260 | int result; |
1261 | ||
25be5821 | 1262 | switch (mode) { |
d5a5911b | 1263 | case PM_POST_HIBERNATION: |
25be5821 | 1264 | case PM_POST_SUSPEND: |
9e50bc14 LT |
1265 | if (!acpi_battery_present(battery)) |
1266 | return 0; | |
1267 | ||
2754435d DR |
1268 | if (battery->bat) { |
1269 | acpi_battery_refresh(battery); | |
1270 | } else { | |
9e50bc14 LT |
1271 | result = acpi_battery_get_info(battery); |
1272 | if (result) | |
1273 | return result; | |
1274 | ||
1275 | result = sysfs_add_battery(battery); | |
1276 | if (result) | |
1277 | return result; | |
2754435d | 1278 | } |
9e50bc14 LT |
1279 | |
1280 | acpi_battery_init_alarm(battery); | |
1281 | acpi_battery_get_state(battery); | |
25be5821 KM |
1282 | break; |
1283 | } | |
1284 | ||
1285 | return 0; | |
1286 | } | |
1287 | ||
048d16da MK |
1288 | static int __init |
1289 | battery_bix_broken_package_quirk(const struct dmi_system_id *d) | |
3f5dc08f AM |
1290 | { |
1291 | battery_bix_broken_package = 1; | |
1292 | return 0; | |
1293 | } | |
1294 | ||
048d16da MK |
1295 | static int __init |
1296 | battery_notification_delay_quirk(const struct dmi_system_id *d) | |
f43691c6 AM |
1297 | { |
1298 | battery_notification_delay_ms = 1000; | |
1299 | return 0; | |
1300 | } | |
1301 | ||
1b799c5c HG |
1302 | static int __init |
1303 | battery_ac_is_broken_quirk(const struct dmi_system_id *d) | |
1304 | { | |
1305 | battery_ac_is_broken = 1; | |
1306 | return 0; | |
1307 | } | |
1308 | ||
ec625a37 CC |
1309 | static int __init |
1310 | battery_do_not_check_pmic_quirk(const struct dmi_system_id *d) | |
1311 | { | |
1312 | battery_check_pmic = 0; | |
1313 | return 0; | |
1314 | } | |
1315 | ||
048d16da | 1316 | static const struct dmi_system_id bat_dmi_table[] __initconst = { |
a90b4038 | 1317 | { |
91afa076 | 1318 | /* NEC LZ750/LS */ |
3f5dc08f | 1319 | .callback = battery_bix_broken_package_quirk, |
a90b4038 LT |
1320 | .matches = { |
1321 | DMI_MATCH(DMI_SYS_VENDOR, "NEC"), | |
1322 | DMI_MATCH(DMI_PRODUCT_NAME, "PC-LZ750LS"), | |
1323 | }, | |
1324 | }, | |
f43691c6 | 1325 | { |
91afa076 | 1326 | /* Acer Aspire V5-573G */ |
f43691c6 | 1327 | .callback = battery_notification_delay_quirk, |
f43691c6 AM |
1328 | .matches = { |
1329 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
1330 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire V5-573G"), | |
1331 | }, | |
1332 | }, | |
1b799c5c HG |
1333 | { |
1334 | /* Point of View mobii wintab p800w */ | |
1335 | .callback = battery_ac_is_broken_quirk, | |
1336 | .matches = { | |
1337 | DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"), | |
1338 | DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"), | |
1339 | DMI_MATCH(DMI_BIOS_VERSION, "3BAIR1013"), | |
1340 | /* Above matches are too generic, add bios-date match */ | |
1341 | DMI_MATCH(DMI_BIOS_DATE, "08/22/2014"), | |
1342 | }, | |
1343 | }, | |
ec625a37 CC |
1344 | { |
1345 | /* ECS EF20EA */ | |
1346 | .callback = battery_do_not_check_pmic_quirk, | |
1347 | .matches = { | |
1348 | DMI_MATCH(DMI_PRODUCT_NAME, "EF20EA"), | |
1349 | }, | |
1350 | }, | |
1351 | { | |
1352 | /* Lenovo Ideapad Miix 320 */ | |
1353 | .callback = battery_do_not_check_pmic_quirk, | |
1354 | .matches = { | |
1355 | DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"), | |
1356 | DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "80XF"), | |
1357 | DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Lenovo MIIX 320-10ICR"), | |
1358 | }, | |
1359 | }, | |
a90b4038 LT |
1360 | {}, |
1361 | }; | |
1362 | ||
75646e75 LT |
1363 | /* |
1364 | * Some machines'(E,G Lenovo Z480) ECs are not stable | |
1365 | * during boot up and this causes battery driver fails to be | |
1366 | * probed due to failure of getting battery information | |
1367 | * from EC sometimes. After several retries, the operation | |
1368 | * may work. So add retry code here and 20ms sleep between | |
1369 | * every retries. | |
1370 | */ | |
1371 | static int acpi_battery_update_retry(struct acpi_battery *battery) | |
1372 | { | |
1373 | int retry, ret; | |
1374 | ||
1375 | for (retry = 5; retry; retry--) { | |
1376 | ret = acpi_battery_update(battery, false); | |
1377 | if (!ret) | |
1378 | break; | |
1379 | ||
1380 | msleep(20); | |
1381 | } | |
1382 | return ret; | |
1383 | } | |
1384 | ||
4be44fcd | 1385 | static int acpi_battery_add(struct acpi_device *device) |
1da177e4 | 1386 | { |
4be44fcd | 1387 | int result = 0; |
4be44fcd | 1388 | struct acpi_battery *battery = NULL; |
952c63e9 | 1389 | |
1da177e4 | 1390 | if (!device) |
d550d98d | 1391 | return -EINVAL; |
40e7fcb1 LT |
1392 | |
1393 | if (device->dep_unmet) | |
1394 | return -EPROBE_DEFER; | |
1395 | ||
36bcbec7 | 1396 | battery = kzalloc(sizeof(struct acpi_battery), GFP_KERNEL); |
1da177e4 | 1397 | if (!battery) |
d550d98d | 1398 | return -ENOMEM; |
145def84 | 1399 | battery->device = device; |
1da177e4 LT |
1400 | strcpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME); |
1401 | strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS); | |
db89b4f0 | 1402 | device->driver_data = battery; |
038fdea2 | 1403 | mutex_init(&battery->lock); |
69d94ec6 | 1404 | mutex_init(&battery->sysfs_lock); |
952c63e9 | 1405 | if (acpi_has_method(battery->device->handle, "_BIX")) |
c67fcd67 | 1406 | set_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags); |
75646e75 LT |
1407 | |
1408 | result = acpi_battery_update_retry(battery); | |
eb03cb02 SH |
1409 | if (result) |
1410 | goto fail; | |
75646e75 | 1411 | |
3a670cc7 LT |
1412 | #ifdef CONFIG_ACPI_PROCFS_POWER |
1413 | result = acpi_battery_add_fs(device); | |
3a670cc7 | 1414 | if (result) { |
3a670cc7 | 1415 | acpi_battery_remove_fs(device); |
3a670cc7 LT |
1416 | goto fail; |
1417 | } | |
6993ce46 | 1418 | #endif |
25be5821 | 1419 | |
dd1fca9e | 1420 | pr_info(PREFIX "%s Slot [%s] (battery %s)\n", |
e80bba4b SH |
1421 | ACPI_BATTERY_DEVICE_NAME, acpi_device_bid(device), |
1422 | device->status.battery_present ? "present" : "absent"); | |
1423 | ||
25be5821 KM |
1424 | battery->pm_nb.notifier_call = battery_notify; |
1425 | register_pm_notifier(&battery->pm_nb); | |
1426 | ||
e0d1f09e ZR |
1427 | device_init_wakeup(&device->dev, 1); |
1428 | ||
d550d98d | 1429 | return result; |
e80bba4b SH |
1430 | |
1431 | fail: | |
1432 | sysfs_remove_battery(battery); | |
1433 | mutex_destroy(&battery->lock); | |
69d94ec6 | 1434 | mutex_destroy(&battery->sysfs_lock); |
e80bba4b SH |
1435 | kfree(battery); |
1436 | return result; | |
1da177e4 LT |
1437 | } |
1438 | ||
51fac838 | 1439 | static int acpi_battery_remove(struct acpi_device *device) |
1da177e4 | 1440 | { |
4be44fcd | 1441 | struct acpi_battery *battery = NULL; |
1da177e4 | 1442 | |
1da177e4 | 1443 | if (!device || !acpi_driver_data(device)) |
d550d98d | 1444 | return -EINVAL; |
e0d1f09e | 1445 | device_init_wakeup(&device->dev, 0); |
50dd0969 | 1446 | battery = acpi_driver_data(device); |
25be5821 | 1447 | unregister_pm_notifier(&battery->pm_nb); |
3a670cc7 LT |
1448 | #ifdef CONFIG_ACPI_PROCFS_POWER |
1449 | acpi_battery_remove_fs(device); | |
1450 | #endif | |
508df92d | 1451 | sysfs_remove_battery(battery); |
038fdea2 | 1452 | mutex_destroy(&battery->lock); |
69d94ec6 | 1453 | mutex_destroy(&battery->sysfs_lock); |
1da177e4 | 1454 | kfree(battery); |
d550d98d | 1455 | return 0; |
1da177e4 LT |
1456 | } |
1457 | ||
90692404 | 1458 | #ifdef CONFIG_PM_SLEEP |
34c4415a | 1459 | /* this is needed to learn about changes made in suspended state */ |
a6f50dc8 | 1460 | static int acpi_battery_resume(struct device *dev) |
34c4415a JK |
1461 | { |
1462 | struct acpi_battery *battery; | |
a6f50dc8 RW |
1463 | |
1464 | if (!dev) | |
34c4415a | 1465 | return -EINVAL; |
a6f50dc8 RW |
1466 | |
1467 | battery = acpi_driver_data(to_acpi_device(dev)); | |
1468 | if (!battery) | |
1469 | return -EINVAL; | |
1470 | ||
f1d4661a | 1471 | battery->update_time = 0; |
9e50bc14 | 1472 | acpi_battery_update(battery, true); |
b6ce4083 | 1473 | return 0; |
34c4415a | 1474 | } |
7f6895c6 SK |
1475 | #else |
1476 | #define acpi_battery_resume NULL | |
90692404 | 1477 | #endif |
34c4415a | 1478 | |
a6f50dc8 RW |
1479 | static SIMPLE_DEV_PM_OPS(acpi_battery_pm, NULL, acpi_battery_resume); |
1480 | ||
aa650bbd AS |
1481 | static struct acpi_driver acpi_battery_driver = { |
1482 | .name = "battery", | |
1483 | .class = ACPI_BATTERY_CLASS, | |
1484 | .ids = battery_device_ids, | |
d9406691 | 1485 | .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, |
aa650bbd AS |
1486 | .ops = { |
1487 | .add = acpi_battery_add, | |
aa650bbd | 1488 | .remove = acpi_battery_remove, |
d9406691 | 1489 | .notify = acpi_battery_notify, |
aa650bbd | 1490 | }, |
a6f50dc8 | 1491 | .drv.pm = &acpi_battery_pm, |
aa650bbd AS |
1492 | }; |
1493 | ||
b0cbc861 | 1494 | static void __init acpi_battery_init_async(void *unused, async_cookie_t cookie) |
1da177e4 | 1495 | { |
dccfae6d | 1496 | unsigned int i; |
479faaf0 LH |
1497 | int result; |
1498 | ||
3f5dc08f | 1499 | dmi_check_system(bat_dmi_table); |
479faaf0 | 1500 | |
ec625a37 CC |
1501 | if (battery_check_pmic) { |
1502 | for (i = 0; i < ARRAY_SIZE(acpi_battery_blacklist); i++) | |
1503 | if (acpi_dev_present(acpi_battery_blacklist[i], "1", -1)) { | |
1504 | pr_info(PREFIX ACPI_BATTERY_DEVICE_NAME | |
1505 | ": found native %s PMIC, not loading\n", | |
1506 | acpi_battery_blacklist[i]); | |
1507 | return; | |
1508 | } | |
1509 | } | |
1510 | ||
3a670cc7 LT |
1511 | #ifdef CONFIG_ACPI_PROCFS_POWER |
1512 | acpi_battery_dir = acpi_lock_battery_dir(); | |
1513 | if (!acpi_battery_dir) | |
1514 | return; | |
1515 | #endif | |
479faaf0 | 1516 | result = acpi_bus_register_driver(&acpi_battery_driver); |
3a670cc7 | 1517 | #ifdef CONFIG_ACPI_PROCFS_POWER |
479faaf0 | 1518 | if (result < 0) |
3a670cc7 LT |
1519 | acpi_unlock_battery_dir(acpi_battery_dir); |
1520 | #endif | |
bc39fbcf | 1521 | battery_driver_registered = (result == 0); |
0f66af53 AV |
1522 | } |
1523 | ||
1524 | static int __init acpi_battery_init(void) | |
1525 | { | |
e234b074 LH |
1526 | if (acpi_disabled) |
1527 | return -ENODEV; | |
1528 | ||
eca21d91 | 1529 | async_cookie = async_schedule(acpi_battery_init_async, NULL); |
d550d98d | 1530 | return 0; |
1da177e4 LT |
1531 | } |
1532 | ||
4be44fcd | 1533 | static void __exit acpi_battery_exit(void) |
1da177e4 | 1534 | { |
5dfa0c73 | 1535 | async_synchronize_cookie(async_cookie + 1); |
fa93854f | 1536 | if (battery_driver_registered) { |
bc39fbcf | 1537 | acpi_bus_unregister_driver(&acpi_battery_driver); |
fa93854f OG |
1538 | battery_hook_exit(); |
1539 | } | |
3a670cc7 | 1540 | #ifdef CONFIG_ACPI_PROCFS_POWER |
bc39fbcf HG |
1541 | if (acpi_battery_dir) |
1542 | acpi_unlock_battery_dir(acpi_battery_dir); | |
3a670cc7 | 1543 | #endif |
1da177e4 LT |
1544 | } |
1545 | ||
1da177e4 LT |
1546 | module_init(acpi_battery_init); |
1547 | module_exit(acpi_battery_exit); |