Commit | Line | Data |
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c942fddf | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 | 2 | /* |
aa650bbd | 3 | * battery.c - ACPI Battery Driver (Revision: 2.0) |
1da177e4 | 4 | * |
aa650bbd AS |
5 | * Copyright (C) 2007 Alexey Starikovskiy <astarikovskiy@suse.de> |
6 | * Copyright (C) 2004-2007 Vladimir Lebedev <vladimir.p.lebedev@intel.com> | |
1da177e4 LT |
7 | * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> |
8 | * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> | |
1da177e4 LT |
9 | */ |
10 | ||
fa93854f OG |
11 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
12 | ||
53dd200a DR |
13 | #include <linux/async.h> |
14 | #include <linux/delay.h> | |
15 | #include <linux/dmi.h> | |
16 | #include <linux/jiffies.h> | |
1da177e4 | 17 | #include <linux/kernel.h> |
fa93854f | 18 | #include <linux/list.h> |
1da177e4 | 19 | #include <linux/module.h> |
fa93854f | 20 | #include <linux/mutex.h> |
5a0e3ad6 | 21 | #include <linux/slab.h> |
25be5821 | 22 | #include <linux/suspend.h> |
53dd200a DR |
23 | #include <linux/types.h> |
24 | ||
4000e626 | 25 | #include <asm/unaligned.h> |
d7380965 | 26 | |
3a670cc7 LT |
27 | #ifdef CONFIG_ACPI_PROCFS_POWER |
28 | #include <linux/proc_fs.h> | |
29 | #include <linux/seq_file.h> | |
7c0f6ba6 | 30 | #include <linux/uaccess.h> |
3a670cc7 LT |
31 | #endif |
32 | ||
8b48463f | 33 | #include <linux/acpi.h> |
d7380965 AS |
34 | #include <linux/power_supply.h> |
35 | ||
fa93854f | 36 | #include <acpi/battery.h> |
f03be352 | 37 | |
a192a958 LB |
38 | #define PREFIX "ACPI: " |
39 | ||
1da177e4 LT |
40 | #define ACPI_BATTERY_VALUE_UNKNOWN 0xFFFFFFFF |
41 | ||
1da177e4 | 42 | #define ACPI_BATTERY_DEVICE_NAME "Battery" |
1da177e4 | 43 | |
ae6f6187 LT |
44 | /* Battery power unit: 0 means mW, 1 means mA */ |
45 | #define ACPI_BATTERY_POWER_UNIT_MA 1 | |
46 | ||
1ac5aaa6 ZR |
47 | #define ACPI_BATTERY_STATE_DISCHARGING 0x1 |
48 | #define ACPI_BATTERY_STATE_CHARGING 0x2 | |
49 | #define ACPI_BATTERY_STATE_CRITICAL 0x4 | |
50 | ||
1da177e4 | 51 | #define _COMPONENT ACPI_BATTERY_COMPONENT |
b6ce4083 | 52 | |
f52fd66d | 53 | ACPI_MODULE_NAME("battery"); |
1da177e4 | 54 | |
f52fd66d | 55 | MODULE_AUTHOR("Paul Diefenbaugh"); |
aa650bbd | 56 | MODULE_AUTHOR("Alexey Starikovskiy <astarikovskiy@suse.de>"); |
7cda93e0 | 57 | MODULE_DESCRIPTION("ACPI Battery Driver"); |
1da177e4 LT |
58 | MODULE_LICENSE("GPL"); |
59 | ||
eca21d91 | 60 | static async_cookie_t async_cookie; |
bc39fbcf | 61 | static bool battery_driver_registered; |
a90b4038 | 62 | static int battery_bix_broken_package; |
f43691c6 | 63 | static int battery_notification_delay_ms; |
1b799c5c | 64 | static int battery_ac_is_broken; |
ec625a37 | 65 | static int battery_check_pmic = 1; |
f1d4661a AS |
66 | static unsigned int cache_time = 1000; |
67 | module_param(cache_time, uint, 0644); | |
68 | MODULE_PARM_DESC(cache_time, "cache time in milliseconds"); | |
b6ce4083 | 69 | |
3a670cc7 LT |
70 | #ifdef CONFIG_ACPI_PROCFS_POWER |
71 | extern struct proc_dir_entry *acpi_lock_battery_dir(void); | |
72 | extern void *acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir); | |
3a670cc7 LT |
73 | #endif |
74 | ||
1ba90e3a TR |
75 | static const struct acpi_device_id battery_device_ids[] = { |
76 | {"PNP0C0A", 0}, | |
77 | {"", 0}, | |
78 | }; | |
1ba90e3a | 79 | |
aa650bbd | 80 | MODULE_DEVICE_TABLE(acpi, battery_device_ids); |
1da177e4 | 81 | |
dccfae6d HG |
82 | /* Lists of PMIC ACPI HIDs with an (often better) native battery driver */ |
83 | static const char * const acpi_battery_blacklist[] = { | |
84 | "INT33F4", /* X-Powers AXP288 PMIC */ | |
85 | }; | |
86 | ||
7b3bcc4a AS |
87 | enum { |
88 | ACPI_BATTERY_ALARM_PRESENT, | |
c67fcd67 | 89 | ACPI_BATTERY_XINFO_PRESENT, |
557d5868 | 90 | ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, |
4000e626 KI |
91 | /* On Lenovo Thinkpad models from 2010 and 2011, the power unit |
92 | switches between mWh and mAh depending on whether the system | |
93 | is running on battery or not. When mAh is the unit, most | |
94 | reported values are incorrect and need to be adjusted by | |
95 | 10000/design_voltage. Verified on x201, t410, t410s, and x220. | |
96 | Pre-2010 and 2012 models appear to always report in mWh and | |
97 | are thus unaffected (tested with t42, t61, t500, x200, x300, | |
98 | and x230). Also, in mid-2012 Lenovo issued a BIOS update for | |
99 | the 2011 models that fixes the issue (tested on x220 with a | |
100 | post-1.29 BIOS), but as of Nov. 2012, no such update is | |
101 | available for the 2010 models. */ | |
102 | ACPI_BATTERY_QUIRK_THINKPAD_MAH, | |
a20136a6 LT |
103 | /* for batteries reporting current capacity with design capacity |
104 | * on a full charge, but showing degradation in full charge cap. | |
105 | */ | |
106 | ACPI_BATTERY_QUIRK_DEGRADED_FULL_CHARGE, | |
7b3bcc4a | 107 | }; |
78490d82 | 108 | |
1da177e4 | 109 | struct acpi_battery { |
038fdea2 | 110 | struct mutex lock; |
69d94ec6 | 111 | struct mutex sysfs_lock; |
297d716f KK |
112 | struct power_supply *bat; |
113 | struct power_supply_desc bat_desc; | |
f1d4661a | 114 | struct acpi_device *device; |
25be5821 | 115 | struct notifier_block pm_nb; |
fa93854f | 116 | struct list_head list; |
f1d4661a | 117 | unsigned long update_time; |
016d5baa | 118 | int revision; |
7faa144a | 119 | int rate_now; |
d7380965 AS |
120 | int capacity_now; |
121 | int voltage_now; | |
038fdea2 | 122 | int design_capacity; |
d7380965 | 123 | int full_charge_capacity; |
038fdea2 AS |
124 | int technology; |
125 | int design_voltage; | |
126 | int design_capacity_warning; | |
127 | int design_capacity_low; | |
c67fcd67 AS |
128 | int cycle_count; |
129 | int measurement_accuracy; | |
130 | int max_sampling_time; | |
131 | int min_sampling_time; | |
132 | int max_averaging_interval; | |
133 | int min_averaging_interval; | |
038fdea2 AS |
134 | int capacity_granularity_1; |
135 | int capacity_granularity_2; | |
f1d4661a | 136 | int alarm; |
038fdea2 AS |
137 | char model_number[32]; |
138 | char serial_number[32]; | |
139 | char type[32]; | |
140 | char oem_info[32]; | |
f1d4661a AS |
141 | int state; |
142 | int power_unit; | |
7b3bcc4a | 143 | unsigned long flags; |
1da177e4 LT |
144 | }; |
145 | ||
297d716f | 146 | #define to_acpi_battery(x) power_supply_get_drvdata(x) |
d7380965 | 147 | |
efd941f1 | 148 | static inline int acpi_battery_present(struct acpi_battery *battery) |
b6ce4083 | 149 | { |
78490d82 AS |
150 | return battery->device->status.battery_present; |
151 | } | |
038fdea2 | 152 | |
d7380965 AS |
153 | static int acpi_battery_technology(struct acpi_battery *battery) |
154 | { | |
155 | if (!strcasecmp("NiCd", battery->type)) | |
156 | return POWER_SUPPLY_TECHNOLOGY_NiCd; | |
157 | if (!strcasecmp("NiMH", battery->type)) | |
158 | return POWER_SUPPLY_TECHNOLOGY_NiMH; | |
159 | if (!strcasecmp("LION", battery->type)) | |
160 | return POWER_SUPPLY_TECHNOLOGY_LION; | |
ad40e68b | 161 | if (!strncasecmp("LI-ION", battery->type, 6)) |
0bde7eee | 162 | return POWER_SUPPLY_TECHNOLOGY_LION; |
d7380965 AS |
163 | if (!strcasecmp("LiP", battery->type)) |
164 | return POWER_SUPPLY_TECHNOLOGY_LIPO; | |
165 | return POWER_SUPPLY_TECHNOLOGY_UNKNOWN; | |
166 | } | |
167 | ||
9104476e | 168 | static int acpi_battery_get_state(struct acpi_battery *battery); |
b19073a0 | 169 | |
56f382a0 RH |
170 | static int acpi_battery_is_charged(struct acpi_battery *battery) |
171 | { | |
1ac5aaa6 | 172 | /* charging, discharging or critical low */ |
56f382a0 RH |
173 | if (battery->state != 0) |
174 | return 0; | |
175 | ||
176 | /* battery not reporting charge */ | |
177 | if (battery->capacity_now == ACPI_BATTERY_VALUE_UNKNOWN || | |
178 | battery->capacity_now == 0) | |
179 | return 0; | |
180 | ||
181 | /* good batteries update full_charge as the batteries degrade */ | |
182 | if (battery->full_charge_capacity == battery->capacity_now) | |
183 | return 1; | |
184 | ||
185 | /* fallback to using design values for broken batteries */ | |
186 | if (battery->design_capacity == battery->capacity_now) | |
187 | return 1; | |
188 | ||
189 | /* we don't do any sort of metric based on percentages */ | |
190 | return 0; | |
191 | } | |
192 | ||
a20136a6 LT |
193 | static bool acpi_battery_is_degraded(struct acpi_battery *battery) |
194 | { | |
195 | return battery->full_charge_capacity && battery->design_capacity && | |
196 | battery->full_charge_capacity < battery->design_capacity; | |
197 | } | |
198 | ||
19fffc84 HG |
199 | static int acpi_battery_handle_discharging(struct acpi_battery *battery) |
200 | { | |
201 | /* | |
202 | * Some devices wrongly report discharging if the battery's charge level | |
203 | * was above the device's start charging threshold atm the AC adapter | |
204 | * was plugged in and the device thus did not start a new charge cycle. | |
205 | */ | |
1b799c5c HG |
206 | if ((battery_ac_is_broken || power_supply_is_system_supplied()) && |
207 | battery->rate_now == 0) | |
19fffc84 HG |
208 | return POWER_SUPPLY_STATUS_NOT_CHARGING; |
209 | ||
210 | return POWER_SUPPLY_STATUS_DISCHARGING; | |
211 | } | |
212 | ||
d7380965 AS |
213 | static int acpi_battery_get_property(struct power_supply *psy, |
214 | enum power_supply_property psp, | |
215 | union power_supply_propval *val) | |
216 | { | |
a1b4bd69 | 217 | int ret = 0; |
d7380965 AS |
218 | struct acpi_battery *battery = to_acpi_battery(psy); |
219 | ||
9104476e AS |
220 | if (acpi_battery_present(battery)) { |
221 | /* run battery update only if it is present */ | |
222 | acpi_battery_get_state(battery); | |
223 | } else if (psp != POWER_SUPPLY_PROP_PRESENT) | |
d7380965 AS |
224 | return -ENODEV; |
225 | switch (psp) { | |
226 | case POWER_SUPPLY_PROP_STATUS: | |
82bf43b2 | 227 | if (battery->state & ACPI_BATTERY_STATE_DISCHARGING) |
19fffc84 | 228 | val->intval = acpi_battery_handle_discharging(battery); |
82bf43b2 | 229 | else if (battery->state & ACPI_BATTERY_STATE_CHARGING) |
d7380965 | 230 | val->intval = POWER_SUPPLY_STATUS_CHARGING; |
56f382a0 | 231 | else if (acpi_battery_is_charged(battery)) |
d7380965 | 232 | val->intval = POWER_SUPPLY_STATUS_FULL; |
4c41d3ad RD |
233 | else |
234 | val->intval = POWER_SUPPLY_STATUS_UNKNOWN; | |
d7380965 AS |
235 | break; |
236 | case POWER_SUPPLY_PROP_PRESENT: | |
237 | val->intval = acpi_battery_present(battery); | |
238 | break; | |
239 | case POWER_SUPPLY_PROP_TECHNOLOGY: | |
240 | val->intval = acpi_battery_technology(battery); | |
241 | break; | |
c67fcd67 AS |
242 | case POWER_SUPPLY_PROP_CYCLE_COUNT: |
243 | val->intval = battery->cycle_count; | |
244 | break; | |
d7380965 | 245 | case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: |
a1b4bd69 RW |
246 | if (battery->design_voltage == ACPI_BATTERY_VALUE_UNKNOWN) |
247 | ret = -ENODEV; | |
248 | else | |
249 | val->intval = battery->design_voltage * 1000; | |
d7380965 AS |
250 | break; |
251 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
a1b4bd69 RW |
252 | if (battery->voltage_now == ACPI_BATTERY_VALUE_UNKNOWN) |
253 | ret = -ENODEV; | |
254 | else | |
255 | val->intval = battery->voltage_now * 1000; | |
d7380965 AS |
256 | break; |
257 | case POWER_SUPPLY_PROP_CURRENT_NOW: | |
7faa144a | 258 | case POWER_SUPPLY_PROP_POWER_NOW: |
a1b4bd69 RW |
259 | if (battery->rate_now == ACPI_BATTERY_VALUE_UNKNOWN) |
260 | ret = -ENODEV; | |
261 | else | |
262 | val->intval = battery->rate_now * 1000; | |
d7380965 AS |
263 | break; |
264 | case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: | |
265 | case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: | |
a1b4bd69 RW |
266 | if (battery->design_capacity == ACPI_BATTERY_VALUE_UNKNOWN) |
267 | ret = -ENODEV; | |
268 | else | |
269 | val->intval = battery->design_capacity * 1000; | |
d7380965 AS |
270 | break; |
271 | case POWER_SUPPLY_PROP_CHARGE_FULL: | |
272 | case POWER_SUPPLY_PROP_ENERGY_FULL: | |
a1b4bd69 RW |
273 | if (battery->full_charge_capacity == ACPI_BATTERY_VALUE_UNKNOWN) |
274 | ret = -ENODEV; | |
275 | else | |
276 | val->intval = battery->full_charge_capacity * 1000; | |
d7380965 AS |
277 | break; |
278 | case POWER_SUPPLY_PROP_CHARGE_NOW: | |
279 | case POWER_SUPPLY_PROP_ENERGY_NOW: | |
a1b4bd69 RW |
280 | if (battery->capacity_now == ACPI_BATTERY_VALUE_UNKNOWN) |
281 | ret = -ENODEV; | |
282 | else | |
283 | val->intval = battery->capacity_now * 1000; | |
d7380965 | 284 | break; |
a58e1150 | 285 | case POWER_SUPPLY_PROP_CAPACITY: |
286 | if (battery->capacity_now && battery->full_charge_capacity) | |
287 | val->intval = battery->capacity_now * 100/ | |
288 | battery->full_charge_capacity; | |
289 | else | |
290 | val->intval = 0; | |
291 | break; | |
1ac5aaa6 ZR |
292 | case POWER_SUPPLY_PROP_CAPACITY_LEVEL: |
293 | if (battery->state & ACPI_BATTERY_STATE_CRITICAL) | |
294 | val->intval = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; | |
295 | else if (test_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags) && | |
296 | (battery->capacity_now <= battery->alarm)) | |
297 | val->intval = POWER_SUPPLY_CAPACITY_LEVEL_LOW; | |
298 | else if (acpi_battery_is_charged(battery)) | |
299 | val->intval = POWER_SUPPLY_CAPACITY_LEVEL_FULL; | |
300 | else | |
301 | val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; | |
302 | break; | |
d7380965 AS |
303 | case POWER_SUPPLY_PROP_MODEL_NAME: |
304 | val->strval = battery->model_number; | |
305 | break; | |
306 | case POWER_SUPPLY_PROP_MANUFACTURER: | |
307 | val->strval = battery->oem_info; | |
308 | break; | |
7c2670bb | 309 | case POWER_SUPPLY_PROP_SERIAL_NUMBER: |
310 | val->strval = battery->serial_number; | |
311 | break; | |
d7380965 | 312 | default: |
a1b4bd69 | 313 | ret = -EINVAL; |
d7380965 | 314 | } |
a1b4bd69 | 315 | return ret; |
d7380965 AS |
316 | } |
317 | ||
318 | static enum power_supply_property charge_battery_props[] = { | |
319 | POWER_SUPPLY_PROP_STATUS, | |
320 | POWER_SUPPLY_PROP_PRESENT, | |
321 | POWER_SUPPLY_PROP_TECHNOLOGY, | |
c67fcd67 | 322 | POWER_SUPPLY_PROP_CYCLE_COUNT, |
d7380965 AS |
323 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, |
324 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
325 | POWER_SUPPLY_PROP_CURRENT_NOW, | |
326 | POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, | |
327 | POWER_SUPPLY_PROP_CHARGE_FULL, | |
328 | POWER_SUPPLY_PROP_CHARGE_NOW, | |
a58e1150 | 329 | POWER_SUPPLY_PROP_CAPACITY, |
1ac5aaa6 | 330 | POWER_SUPPLY_PROP_CAPACITY_LEVEL, |
d7380965 AS |
331 | POWER_SUPPLY_PROP_MODEL_NAME, |
332 | POWER_SUPPLY_PROP_MANUFACTURER, | |
7c2670bb | 333 | POWER_SUPPLY_PROP_SERIAL_NUMBER, |
d7380965 AS |
334 | }; |
335 | ||
336 | static enum power_supply_property energy_battery_props[] = { | |
337 | POWER_SUPPLY_PROP_STATUS, | |
338 | POWER_SUPPLY_PROP_PRESENT, | |
339 | POWER_SUPPLY_PROP_TECHNOLOGY, | |
c67fcd67 | 340 | POWER_SUPPLY_PROP_CYCLE_COUNT, |
d7380965 AS |
341 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, |
342 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
7faa144a | 343 | POWER_SUPPLY_PROP_POWER_NOW, |
d7380965 AS |
344 | POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, |
345 | POWER_SUPPLY_PROP_ENERGY_FULL, | |
346 | POWER_SUPPLY_PROP_ENERGY_NOW, | |
a58e1150 | 347 | POWER_SUPPLY_PROP_CAPACITY, |
1ac5aaa6 | 348 | POWER_SUPPLY_PROP_CAPACITY_LEVEL, |
d7380965 AS |
349 | POWER_SUPPLY_PROP_MODEL_NAME, |
350 | POWER_SUPPLY_PROP_MANUFACTURER, | |
7c2670bb | 351 | POWER_SUPPLY_PROP_SERIAL_NUMBER, |
d7380965 AS |
352 | }; |
353 | ||
b41901a2 HG |
354 | static enum power_supply_property energy_battery_full_cap_broken_props[] = { |
355 | POWER_SUPPLY_PROP_STATUS, | |
356 | POWER_SUPPLY_PROP_PRESENT, | |
357 | POWER_SUPPLY_PROP_TECHNOLOGY, | |
358 | POWER_SUPPLY_PROP_CYCLE_COUNT, | |
359 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, | |
360 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
361 | POWER_SUPPLY_PROP_POWER_NOW, | |
362 | POWER_SUPPLY_PROP_ENERGY_NOW, | |
363 | POWER_SUPPLY_PROP_MODEL_NAME, | |
364 | POWER_SUPPLY_PROP_MANUFACTURER, | |
365 | POWER_SUPPLY_PROP_SERIAL_NUMBER, | |
366 | }; | |
367 | ||
78490d82 AS |
368 | /* -------------------------------------------------------------------------- |
369 | Battery Management | |
370 | -------------------------------------------------------------------------- */ | |
038fdea2 AS |
371 | struct acpi_offsets { |
372 | size_t offset; /* offset inside struct acpi_sbs_battery */ | |
373 | u8 mode; /* int or string? */ | |
374 | }; | |
b6ce4083 | 375 | |
a4658784 | 376 | static const struct acpi_offsets state_offsets[] = { |
038fdea2 | 377 | {offsetof(struct acpi_battery, state), 0}, |
7faa144a | 378 | {offsetof(struct acpi_battery, rate_now), 0}, |
d7380965 AS |
379 | {offsetof(struct acpi_battery, capacity_now), 0}, |
380 | {offsetof(struct acpi_battery, voltage_now), 0}, | |
038fdea2 | 381 | }; |
b6ce4083 | 382 | |
a4658784 | 383 | static const struct acpi_offsets info_offsets[] = { |
038fdea2 AS |
384 | {offsetof(struct acpi_battery, power_unit), 0}, |
385 | {offsetof(struct acpi_battery, design_capacity), 0}, | |
d7380965 | 386 | {offsetof(struct acpi_battery, full_charge_capacity), 0}, |
038fdea2 AS |
387 | {offsetof(struct acpi_battery, technology), 0}, |
388 | {offsetof(struct acpi_battery, design_voltage), 0}, | |
389 | {offsetof(struct acpi_battery, design_capacity_warning), 0}, | |
390 | {offsetof(struct acpi_battery, design_capacity_low), 0}, | |
391 | {offsetof(struct acpi_battery, capacity_granularity_1), 0}, | |
392 | {offsetof(struct acpi_battery, capacity_granularity_2), 0}, | |
393 | {offsetof(struct acpi_battery, model_number), 1}, | |
394 | {offsetof(struct acpi_battery, serial_number), 1}, | |
395 | {offsetof(struct acpi_battery, type), 1}, | |
396 | {offsetof(struct acpi_battery, oem_info), 1}, | |
397 | }; | |
b6ce4083 | 398 | |
a4658784 | 399 | static const struct acpi_offsets extended_info_offsets[] = { |
016d5baa | 400 | {offsetof(struct acpi_battery, revision), 0}, |
c67fcd67 AS |
401 | {offsetof(struct acpi_battery, power_unit), 0}, |
402 | {offsetof(struct acpi_battery, design_capacity), 0}, | |
403 | {offsetof(struct acpi_battery, full_charge_capacity), 0}, | |
404 | {offsetof(struct acpi_battery, technology), 0}, | |
405 | {offsetof(struct acpi_battery, design_voltage), 0}, | |
406 | {offsetof(struct acpi_battery, design_capacity_warning), 0}, | |
407 | {offsetof(struct acpi_battery, design_capacity_low), 0}, | |
408 | {offsetof(struct acpi_battery, cycle_count), 0}, | |
409 | {offsetof(struct acpi_battery, measurement_accuracy), 0}, | |
410 | {offsetof(struct acpi_battery, max_sampling_time), 0}, | |
411 | {offsetof(struct acpi_battery, min_sampling_time), 0}, | |
412 | {offsetof(struct acpi_battery, max_averaging_interval), 0}, | |
413 | {offsetof(struct acpi_battery, min_averaging_interval), 0}, | |
414 | {offsetof(struct acpi_battery, capacity_granularity_1), 0}, | |
415 | {offsetof(struct acpi_battery, capacity_granularity_2), 0}, | |
416 | {offsetof(struct acpi_battery, model_number), 1}, | |
417 | {offsetof(struct acpi_battery, serial_number), 1}, | |
418 | {offsetof(struct acpi_battery, type), 1}, | |
419 | {offsetof(struct acpi_battery, oem_info), 1}, | |
420 | }; | |
421 | ||
038fdea2 AS |
422 | static int extract_package(struct acpi_battery *battery, |
423 | union acpi_object *package, | |
a4658784 | 424 | const struct acpi_offsets *offsets, int num) |
038fdea2 | 425 | { |
106449e8 | 426 | int i; |
038fdea2 AS |
427 | union acpi_object *element; |
428 | if (package->type != ACPI_TYPE_PACKAGE) | |
429 | return -EFAULT; | |
430 | for (i = 0; i < num; ++i) { | |
431 | if (package->package.count <= i) | |
432 | return -EFAULT; | |
433 | element = &package->package.elements[i]; | |
434 | if (offsets[i].mode) { | |
106449e8 AS |
435 | u8 *ptr = (u8 *)battery + offsets[i].offset; |
436 | if (element->type == ACPI_TYPE_STRING || | |
437 | element->type == ACPI_TYPE_BUFFER) | |
438 | strncpy(ptr, element->string.pointer, 32); | |
439 | else if (element->type == ACPI_TYPE_INTEGER) { | |
440 | strncpy(ptr, (u8 *)&element->integer.value, | |
439913ff LM |
441 | sizeof(u64)); |
442 | ptr[sizeof(u64)] = 0; | |
b8a1bdb1 AS |
443 | } else |
444 | *ptr = 0; /* don't have value */ | |
038fdea2 | 445 | } else { |
b8a1bdb1 AS |
446 | int *x = (int *)((u8 *)battery + offsets[i].offset); |
447 | *x = (element->type == ACPI_TYPE_INTEGER) ? | |
448 | element->integer.value : -1; | |
038fdea2 | 449 | } |
b6ce4083 | 450 | } |
b6ce4083 VL |
451 | return 0; |
452 | } | |
453 | ||
454 | static int acpi_battery_get_status(struct acpi_battery *battery) | |
455 | { | |
aa650bbd | 456 | if (acpi_bus_get_status(battery->device)) { |
b6ce4083 VL |
457 | ACPI_EXCEPTION((AE_INFO, AE_ERROR, "Evaluating _STA")); |
458 | return -ENODEV; | |
459 | } | |
aa650bbd | 460 | return 0; |
b6ce4083 VL |
461 | } |
462 | ||
2d09af4a DL |
463 | |
464 | static int extract_battery_info(const int use_bix, | |
465 | struct acpi_battery *battery, | |
466 | const struct acpi_buffer *buffer) | |
1da177e4 | 467 | { |
aa650bbd | 468 | int result = -EFAULT; |
1da177e4 | 469 | |
2d09af4a DL |
470 | if (use_bix && battery_bix_broken_package) |
471 | result = extract_package(battery, buffer->pointer, | |
a90b4038 LT |
472 | extended_info_offsets + 1, |
473 | ARRAY_SIZE(extended_info_offsets) - 1); | |
2d09af4a DL |
474 | else if (use_bix) |
475 | result = extract_package(battery, buffer->pointer, | |
c67fcd67 AS |
476 | extended_info_offsets, |
477 | ARRAY_SIZE(extended_info_offsets)); | |
478 | else | |
2d09af4a | 479 | result = extract_package(battery, buffer->pointer, |
c67fcd67 | 480 | info_offsets, ARRAY_SIZE(info_offsets)); |
557d5868 ZR |
481 | if (test_bit(ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, &battery->flags)) |
482 | battery->full_charge_capacity = battery->design_capacity; | |
4000e626 KI |
483 | if (test_bit(ACPI_BATTERY_QUIRK_THINKPAD_MAH, &battery->flags) && |
484 | battery->power_unit && battery->design_voltage) { | |
485 | battery->design_capacity = battery->design_capacity * | |
486 | 10000 / battery->design_voltage; | |
487 | battery->full_charge_capacity = battery->full_charge_capacity * | |
488 | 10000 / battery->design_voltage; | |
489 | battery->design_capacity_warning = | |
490 | battery->design_capacity_warning * | |
491 | 10000 / battery->design_voltage; | |
492 | /* Curiously, design_capacity_low, unlike the rest of them, | |
493 | is correct. */ | |
494 | /* capacity_granularity_* equal 1 on the systems tested, so | |
495 | it's impossible to tell if they would need an adjustment | |
496 | or not if their values were higher. */ | |
497 | } | |
a20136a6 LT |
498 | if (test_bit(ACPI_BATTERY_QUIRK_DEGRADED_FULL_CHARGE, &battery->flags) && |
499 | battery->capacity_now > battery->full_charge_capacity) | |
500 | battery->capacity_now = battery->full_charge_capacity; | |
501 | ||
d550d98d | 502 | return result; |
1da177e4 LT |
503 | } |
504 | ||
2d09af4a DL |
505 | static int acpi_battery_get_info(struct acpi_battery *battery) |
506 | { | |
507 | const int xinfo = test_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags); | |
508 | int use_bix; | |
509 | int result = -ENODEV; | |
510 | ||
511 | if (!acpi_battery_present(battery)) | |
512 | return 0; | |
513 | ||
514 | ||
515 | for (use_bix = xinfo ? 1 : 0; use_bix >= 0; use_bix--) { | |
516 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
517 | acpi_status status = AE_ERROR; | |
518 | ||
519 | mutex_lock(&battery->lock); | |
520 | status = acpi_evaluate_object(battery->device->handle, | |
521 | use_bix ? "_BIX":"_BIF", | |
522 | NULL, &buffer); | |
523 | mutex_unlock(&battery->lock); | |
524 | ||
525 | if (ACPI_FAILURE(status)) { | |
526 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating %s", | |
527 | use_bix ? "_BIX":"_BIF")); | |
528 | } else { | |
529 | result = extract_battery_info(use_bix, | |
530 | battery, | |
531 | &buffer); | |
532 | ||
533 | kfree(buffer.pointer); | |
534 | break; | |
535 | } | |
536 | } | |
537 | ||
538 | if (!result && !use_bix && xinfo) | |
539 | pr_warn(FW_BUG "The _BIX method is broken, using _BIF.\n"); | |
540 | ||
541 | return result; | |
542 | } | |
543 | ||
b6ce4083 | 544 | static int acpi_battery_get_state(struct acpi_battery *battery) |
1da177e4 | 545 | { |
4be44fcd LB |
546 | int result = 0; |
547 | acpi_status status = 0; | |
548 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
1da177e4 | 549 | |
b6ce4083 VL |
550 | if (!acpi_battery_present(battery)) |
551 | return 0; | |
1da177e4 | 552 | |
f1d4661a AS |
553 | if (battery->update_time && |
554 | time_before(jiffies, battery->update_time + | |
555 | msecs_to_jiffies(cache_time))) | |
556 | return 0; | |
557 | ||
038fdea2 | 558 | mutex_lock(&battery->lock); |
f1d4661a | 559 | status = acpi_evaluate_object(battery->device->handle, "_BST", |
038fdea2 AS |
560 | NULL, &buffer); |
561 | mutex_unlock(&battery->lock); | |
5b31d895 | 562 | |
1da177e4 | 563 | if (ACPI_FAILURE(status)) { |
a6fc6720 | 564 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BST")); |
d550d98d | 565 | return -ENODEV; |
1da177e4 | 566 | } |
aa650bbd | 567 | |
038fdea2 AS |
568 | result = extract_package(battery, buffer.pointer, |
569 | state_offsets, ARRAY_SIZE(state_offsets)); | |
f1d4661a | 570 | battery->update_time = jiffies; |
78490d82 | 571 | kfree(buffer.pointer); |
bc76f90b | 572 | |
55003b21 LT |
573 | /* For buggy DSDTs that report negative 16-bit values for either |
574 | * charging or discharging current and/or report 0 as 65536 | |
575 | * due to bad math. | |
576 | */ | |
577 | if (battery->power_unit == ACPI_BATTERY_POWER_UNIT_MA && | |
578 | battery->rate_now != ACPI_BATTERY_VALUE_UNKNOWN && | |
579 | (s16)(battery->rate_now) < 0) { | |
bc76f90b | 580 | battery->rate_now = abs((s16)battery->rate_now); |
dd1fca9e | 581 | pr_warn_once(FW_BUG "battery: (dis)charge rate invalid.\n"); |
55003b21 | 582 | } |
bc76f90b | 583 | |
557d5868 ZR |
584 | if (test_bit(ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, &battery->flags) |
585 | && battery->capacity_now >= 0 && battery->capacity_now <= 100) | |
586 | battery->capacity_now = (battery->capacity_now * | |
587 | battery->full_charge_capacity) / 100; | |
4000e626 KI |
588 | if (test_bit(ACPI_BATTERY_QUIRK_THINKPAD_MAH, &battery->flags) && |
589 | battery->power_unit && battery->design_voltage) { | |
590 | battery->capacity_now = battery->capacity_now * | |
591 | 10000 / battery->design_voltage; | |
592 | } | |
a20136a6 LT |
593 | if (test_bit(ACPI_BATTERY_QUIRK_DEGRADED_FULL_CHARGE, &battery->flags) && |
594 | battery->capacity_now > battery->full_charge_capacity) | |
595 | battery->capacity_now = battery->full_charge_capacity; | |
596 | ||
b6ce4083 VL |
597 | return result; |
598 | } | |
1da177e4 | 599 | |
aa650bbd | 600 | static int acpi_battery_set_alarm(struct acpi_battery *battery) |
1da177e4 | 601 | { |
4be44fcd | 602 | acpi_status status = 0; |
1da177e4 | 603 | |
c67fcd67 | 604 | if (!acpi_battery_present(battery) || |
7b3bcc4a | 605 | !test_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags)) |
d550d98d | 606 | return -ENODEV; |
1da177e4 | 607 | |
038fdea2 | 608 | mutex_lock(&battery->lock); |
0db98202 JL |
609 | status = acpi_execute_simple_method(battery->device->handle, "_BTP", |
610 | battery->alarm); | |
038fdea2 | 611 | mutex_unlock(&battery->lock); |
aa650bbd | 612 | |
1da177e4 | 613 | if (ACPI_FAILURE(status)) |
d550d98d | 614 | return -ENODEV; |
1da177e4 | 615 | |
aa650bbd | 616 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Alarm set to %d\n", battery->alarm)); |
d550d98d | 617 | return 0; |
1da177e4 LT |
618 | } |
619 | ||
b6ce4083 | 620 | static int acpi_battery_init_alarm(struct acpi_battery *battery) |
1da177e4 | 621 | { |
b6ce4083 | 622 | /* See if alarms are supported, and if so, set default */ |
952c63e9 | 623 | if (!acpi_has_method(battery->device->handle, "_BTP")) { |
7b3bcc4a | 624 | clear_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags); |
f1d4661a | 625 | return 0; |
b6ce4083 | 626 | } |
7b3bcc4a | 627 | set_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags); |
f1d4661a AS |
628 | if (!battery->alarm) |
629 | battery->alarm = battery->design_capacity_warning; | |
aa650bbd | 630 | return acpi_battery_set_alarm(battery); |
b6ce4083 | 631 | } |
1da177e4 | 632 | |
508df92d AB |
633 | static ssize_t acpi_battery_alarm_show(struct device *dev, |
634 | struct device_attribute *attr, | |
635 | char *buf) | |
636 | { | |
637 | struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev)); | |
638 | return sprintf(buf, "%d\n", battery->alarm * 1000); | |
639 | } | |
640 | ||
641 | static ssize_t acpi_battery_alarm_store(struct device *dev, | |
642 | struct device_attribute *attr, | |
643 | const char *buf, size_t count) | |
644 | { | |
645 | unsigned long x; | |
646 | struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev)); | |
47a08c85 | 647 | if (sscanf(buf, "%lu\n", &x) == 1) |
508df92d AB |
648 | battery->alarm = x/1000; |
649 | if (acpi_battery_present(battery)) | |
650 | acpi_battery_set_alarm(battery); | |
651 | return count; | |
652 | } | |
653 | ||
82d2b610 | 654 | static const struct device_attribute alarm_attr = { |
01e8ef11 | 655 | .attr = {.name = "alarm", .mode = 0644}, |
508df92d AB |
656 | .show = acpi_battery_alarm_show, |
657 | .store = acpi_battery_alarm_store, | |
658 | }; | |
659 | ||
fa93854f OG |
660 | /* |
661 | * The Battery Hooking API | |
662 | * | |
663 | * This API is used inside other drivers that need to expose | |
664 | * platform-specific behaviour within the generic driver in a | |
665 | * generic way. | |
666 | * | |
667 | */ | |
668 | ||
669 | static LIST_HEAD(acpi_battery_list); | |
670 | static LIST_HEAD(battery_hook_list); | |
671 | static DEFINE_MUTEX(hook_mutex); | |
672 | ||
514bcc5d | 673 | static void __battery_hook_unregister(struct acpi_battery_hook *hook, int lock) |
fa93854f OG |
674 | { |
675 | struct acpi_battery *battery; | |
676 | /* | |
677 | * In order to remove a hook, we first need to | |
678 | * de-register all the batteries that are registered. | |
679 | */ | |
680 | if (lock) | |
681 | mutex_lock(&hook_mutex); | |
682 | list_for_each_entry(battery, &acpi_battery_list, list) { | |
683 | hook->remove_battery(battery->bat); | |
684 | } | |
685 | list_del(&hook->list); | |
686 | if (lock) | |
687 | mutex_unlock(&hook_mutex); | |
688 | pr_info("extension unregistered: %s\n", hook->name); | |
689 | } | |
690 | ||
691 | void battery_hook_unregister(struct acpi_battery_hook *hook) | |
692 | { | |
693 | __battery_hook_unregister(hook, 1); | |
694 | } | |
695 | EXPORT_SYMBOL_GPL(battery_hook_unregister); | |
696 | ||
697 | void battery_hook_register(struct acpi_battery_hook *hook) | |
698 | { | |
699 | struct acpi_battery *battery; | |
700 | ||
701 | mutex_lock(&hook_mutex); | |
702 | INIT_LIST_HEAD(&hook->list); | |
703 | list_add(&hook->list, &battery_hook_list); | |
704 | /* | |
705 | * Now that the driver is registered, we need | |
706 | * to notify the hook that a battery is available | |
707 | * for each battery, so that the driver may add | |
708 | * its attributes. | |
709 | */ | |
710 | list_for_each_entry(battery, &acpi_battery_list, list) { | |
711 | if (hook->add_battery(battery->bat)) { | |
712 | /* | |
713 | * If a add-battery returns non-zero, | |
714 | * the registration of the extension has failed, | |
715 | * and we will not add it to the list of loaded | |
716 | * hooks. | |
717 | */ | |
718 | pr_err("extension failed to load: %s", hook->name); | |
719 | __battery_hook_unregister(hook, 0); | |
673b4271 | 720 | goto end; |
fa93854f OG |
721 | } |
722 | } | |
723 | pr_info("new extension: %s\n", hook->name); | |
673b4271 | 724 | end: |
fa93854f OG |
725 | mutex_unlock(&hook_mutex); |
726 | } | |
727 | EXPORT_SYMBOL_GPL(battery_hook_register); | |
728 | ||
729 | /* | |
730 | * This function gets called right after the battery sysfs | |
731 | * attributes have been added, so that the drivers that | |
732 | * define custom sysfs attributes can add their own. | |
7a4ea10c | 733 | */ |
fa93854f OG |
734 | static void battery_hook_add_battery(struct acpi_battery *battery) |
735 | { | |
673b4271 | 736 | struct acpi_battery_hook *hook_node, *tmp; |
fa93854f OG |
737 | |
738 | mutex_lock(&hook_mutex); | |
739 | INIT_LIST_HEAD(&battery->list); | |
740 | list_add(&battery->list, &acpi_battery_list); | |
741 | /* | |
742 | * Since we added a new battery to the list, we need to | |
743 | * iterate over the hooks and call add_battery for each | |
744 | * hook that was registered. This usually happens | |
745 | * when a battery gets hotplugged or initialized | |
746 | * during the battery module initialization. | |
747 | */ | |
673b4271 | 748 | list_for_each_entry_safe(hook_node, tmp, &battery_hook_list, list) { |
fa93854f OG |
749 | if (hook_node->add_battery(battery->bat)) { |
750 | /* | |
751 | * The notification of the extensions has failed, to | |
752 | * prevent further errors we will unload the extension. | |
753 | */ | |
fa93854f OG |
754 | pr_err("error in extension, unloading: %s", |
755 | hook_node->name); | |
673b4271 | 756 | __battery_hook_unregister(hook_node, 0); |
fa93854f OG |
757 | } |
758 | } | |
759 | mutex_unlock(&hook_mutex); | |
760 | } | |
761 | ||
762 | static void battery_hook_remove_battery(struct acpi_battery *battery) | |
763 | { | |
764 | struct acpi_battery_hook *hook; | |
765 | ||
766 | mutex_lock(&hook_mutex); | |
767 | /* | |
768 | * Before removing the hook, we need to remove all | |
769 | * custom attributes from the battery. | |
770 | */ | |
771 | list_for_each_entry(hook, &battery_hook_list, list) { | |
772 | hook->remove_battery(battery->bat); | |
773 | } | |
774 | /* Then, just remove the battery from the list */ | |
775 | list_del(&battery->list); | |
776 | mutex_unlock(&hook_mutex); | |
777 | } | |
778 | ||
779 | static void __exit battery_hook_exit(void) | |
780 | { | |
781 | struct acpi_battery_hook *hook; | |
782 | struct acpi_battery_hook *ptr; | |
783 | /* | |
784 | * At this point, the acpi_bus_unregister_driver() | |
785 | * has called remove for all batteries. We just | |
786 | * need to remove the hooks. | |
787 | */ | |
788 | list_for_each_entry_safe(hook, ptr, &battery_hook_list, list) { | |
789 | __battery_hook_unregister(hook, 1); | |
790 | } | |
791 | mutex_destroy(&hook_mutex); | |
792 | } | |
793 | ||
508df92d AB |
794 | static int sysfs_add_battery(struct acpi_battery *battery) |
795 | { | |
297d716f | 796 | struct power_supply_config psy_cfg = { .drv_data = battery, }; |
508df92d | 797 | |
ae6f6187 | 798 | if (battery->power_unit == ACPI_BATTERY_POWER_UNIT_MA) { |
297d716f KK |
799 | battery->bat_desc.properties = charge_battery_props; |
800 | battery->bat_desc.num_properties = | |
508df92d | 801 | ARRAY_SIZE(charge_battery_props); |
b41901a2 HG |
802 | } else if (battery->full_charge_capacity == 0) { |
803 | battery->bat_desc.properties = | |
804 | energy_battery_full_cap_broken_props; | |
805 | battery->bat_desc.num_properties = | |
806 | ARRAY_SIZE(energy_battery_full_cap_broken_props); | |
508df92d | 807 | } else { |
297d716f KK |
808 | battery->bat_desc.properties = energy_battery_props; |
809 | battery->bat_desc.num_properties = | |
508df92d AB |
810 | ARRAY_SIZE(energy_battery_props); |
811 | } | |
812 | ||
297d716f KK |
813 | battery->bat_desc.name = acpi_device_bid(battery->device); |
814 | battery->bat_desc.type = POWER_SUPPLY_TYPE_BATTERY; | |
815 | battery->bat_desc.get_property = acpi_battery_get_property; | |
508df92d | 816 | |
297d716f KK |
817 | battery->bat = power_supply_register_no_ws(&battery->device->dev, |
818 | &battery->bat_desc, &psy_cfg); | |
e0d1f09e | 819 | |
297d716f KK |
820 | if (IS_ERR(battery->bat)) { |
821 | int result = PTR_ERR(battery->bat); | |
822 | ||
823 | battery->bat = NULL; | |
508df92d | 824 | return result; |
297d716f | 825 | } |
fa93854f | 826 | battery_hook_add_battery(battery); |
297d716f | 827 | return device_create_file(&battery->bat->dev, &alarm_attr); |
508df92d AB |
828 | } |
829 | ||
830 | static void sysfs_remove_battery(struct acpi_battery *battery) | |
831 | { | |
69d94ec6 | 832 | mutex_lock(&battery->sysfs_lock); |
297d716f | 833 | if (!battery->bat) { |
69d94ec6 | 834 | mutex_unlock(&battery->sysfs_lock); |
508df92d | 835 | return; |
9c921c22 | 836 | } |
fa93854f | 837 | battery_hook_remove_battery(battery); |
297d716f KK |
838 | device_remove_file(&battery->bat->dev, &alarm_attr); |
839 | power_supply_unregister(battery->bat); | |
840 | battery->bat = NULL; | |
69d94ec6 | 841 | mutex_unlock(&battery->sysfs_lock); |
bc76f90b HM |
842 | } |
843 | ||
4000e626 KI |
844 | static void find_battery(const struct dmi_header *dm, void *private) |
845 | { | |
846 | struct acpi_battery *battery = (struct acpi_battery *)private; | |
847 | /* Note: the hardcoded offsets below have been extracted from | |
848 | the source code of dmidecode. */ | |
849 | if (dm->type == DMI_ENTRY_PORTABLE_BATTERY && dm->length >= 8) { | |
850 | const u8 *dmi_data = (const u8 *)(dm + 1); | |
851 | int dmi_capacity = get_unaligned((const u16 *)(dmi_data + 6)); | |
852 | if (dm->length >= 18) | |
853 | dmi_capacity *= dmi_data[17]; | |
854 | if (battery->design_capacity * battery->design_voltage / 1000 | |
855 | != dmi_capacity && | |
856 | battery->design_capacity * 10 == dmi_capacity) | |
857 | set_bit(ACPI_BATTERY_QUIRK_THINKPAD_MAH, | |
858 | &battery->flags); | |
859 | } | |
860 | } | |
861 | ||
557d5868 ZR |
862 | /* |
863 | * According to the ACPI spec, some kinds of primary batteries can | |
864 | * report percentage battery remaining capacity directly to OS. | |
865 | * In this case, it reports the Last Full Charged Capacity == 100 | |
866 | * and BatteryPresentRate == 0xFFFFFFFF. | |
867 | * | |
868 | * Now we found some battery reports percentage remaining capacity | |
869 | * even if it's rechargeable. | |
870 | * https://bugzilla.kernel.org/show_bug.cgi?id=15979 | |
871 | * | |
872 | * Handle this correctly so that they won't break userspace. | |
873 | */ | |
7b78622d | 874 | static void acpi_battery_quirks(struct acpi_battery *battery) |
557d5868 ZR |
875 | { |
876 | if (test_bit(ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, &battery->flags)) | |
0f4c6547 | 877 | return; |
557d5868 | 878 | |
0f4c6547 NM |
879 | if (battery->full_charge_capacity == 100 && |
880 | battery->rate_now == ACPI_BATTERY_VALUE_UNKNOWN && | |
881 | battery->capacity_now >= 0 && battery->capacity_now <= 100) { | |
557d5868 ZR |
882 | set_bit(ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, &battery->flags); |
883 | battery->full_charge_capacity = battery->design_capacity; | |
884 | battery->capacity_now = (battery->capacity_now * | |
885 | battery->full_charge_capacity) / 100; | |
886 | } | |
4000e626 KI |
887 | |
888 | if (test_bit(ACPI_BATTERY_QUIRK_THINKPAD_MAH, &battery->flags)) | |
0f4c6547 | 889 | return; |
4000e626 KI |
890 | |
891 | if (battery->power_unit && dmi_name_in_vendors("LENOVO")) { | |
892 | const char *s; | |
893 | s = dmi_get_system_info(DMI_PRODUCT_VERSION); | |
ffd8a731 | 894 | if (s && !strncasecmp(s, "ThinkPad", 8)) { |
4000e626 KI |
895 | dmi_walk(find_battery, battery); |
896 | if (test_bit(ACPI_BATTERY_QUIRK_THINKPAD_MAH, | |
897 | &battery->flags) && | |
898 | battery->design_voltage) { | |
899 | battery->design_capacity = | |
900 | battery->design_capacity * | |
901 | 10000 / battery->design_voltage; | |
902 | battery->full_charge_capacity = | |
903 | battery->full_charge_capacity * | |
904 | 10000 / battery->design_voltage; | |
905 | battery->design_capacity_warning = | |
906 | battery->design_capacity_warning * | |
907 | 10000 / battery->design_voltage; | |
908 | battery->capacity_now = battery->capacity_now * | |
909 | 10000 / battery->design_voltage; | |
910 | } | |
911 | } | |
912 | } | |
a20136a6 LT |
913 | |
914 | if (test_bit(ACPI_BATTERY_QUIRK_DEGRADED_FULL_CHARGE, &battery->flags)) | |
915 | return; | |
916 | ||
917 | if (acpi_battery_is_degraded(battery) && | |
918 | battery->capacity_now > battery->full_charge_capacity) { | |
919 | set_bit(ACPI_BATTERY_QUIRK_DEGRADED_FULL_CHARGE, &battery->flags); | |
920 | battery->capacity_now = battery->full_charge_capacity; | |
921 | } | |
557d5868 ZR |
922 | } |
923 | ||
9e50bc14 | 924 | static int acpi_battery_update(struct acpi_battery *battery, bool resume) |
b6ce4083 | 925 | { |
82f2d305 LRM |
926 | int result = acpi_battery_get_status(battery); |
927 | ||
508df92d | 928 | if (result) |
b6ce4083 | 929 | return result; |
82f2d305 | 930 | |
508df92d AB |
931 | if (!acpi_battery_present(battery)) { |
932 | sysfs_remove_battery(battery); | |
97749cd9 | 933 | battery->update_time = 0; |
508df92d | 934 | return 0; |
b6ce4083 | 935 | } |
9e50bc14 LT |
936 | |
937 | if (resume) | |
938 | return 0; | |
939 | ||
82f2d305 | 940 | if (!battery->update_time) { |
97749cd9 AS |
941 | result = acpi_battery_get_info(battery); |
942 | if (result) | |
943 | return result; | |
944 | acpi_battery_init_alarm(battery); | |
945 | } | |
12c78ca2 CG |
946 | |
947 | result = acpi_battery_get_state(battery); | |
948 | if (result) | |
949 | return result; | |
950 | acpi_battery_quirks(battery); | |
951 | ||
297d716f | 952 | if (!battery->bat) { |
eb03cb02 SH |
953 | result = sysfs_add_battery(battery); |
954 | if (result) | |
955 | return result; | |
956 | } | |
e0d1f09e ZR |
957 | |
958 | /* | |
959 | * Wakeup the system if battery is critical low | |
960 | * or lower than the alarm level | |
961 | */ | |
962 | if ((battery->state & ACPI_BATTERY_STATE_CRITICAL) || | |
963 | (test_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags) && | |
964 | (battery->capacity_now <= battery->alarm))) | |
33e4f80e | 965 | acpi_pm_wakeup_event(&battery->device->dev); |
e0d1f09e | 966 | |
557d5868 | 967 | return result; |
4bd35cdb VL |
968 | } |
969 | ||
da8aeb92 RW |
970 | static void acpi_battery_refresh(struct acpi_battery *battery) |
971 | { | |
c5971456 AW |
972 | int power_unit; |
973 | ||
297d716f | 974 | if (!battery->bat) |
da8aeb92 RW |
975 | return; |
976 | ||
c5971456 AW |
977 | power_unit = battery->power_unit; |
978 | ||
da8aeb92 | 979 | acpi_battery_get_info(battery); |
c5971456 AW |
980 | |
981 | if (power_unit == battery->power_unit) | |
982 | return; | |
983 | ||
984 | /* The battery has changed its reporting units. */ | |
da8aeb92 RW |
985 | sysfs_remove_battery(battery); |
986 | sysfs_add_battery(battery); | |
987 | } | |
988 | ||
3a670cc7 LT |
989 | /* -------------------------------------------------------------------------- |
990 | FS Interface (/proc) | |
991 | -------------------------------------------------------------------------- */ | |
992 | ||
993 | #ifdef CONFIG_ACPI_PROCFS_POWER | |
994 | static struct proc_dir_entry *acpi_battery_dir; | |
995 | ||
27059b91 MK |
996 | static const char *acpi_battery_units(const struct acpi_battery *battery) |
997 | { | |
998 | return (battery->power_unit == ACPI_BATTERY_POWER_UNIT_MA) ? | |
999 | "mA" : "mW"; | |
1000 | } | |
1001 | ||
e7b087fc | 1002 | static int acpi_battery_info_proc_show(struct seq_file *seq, void *offset) |
3a670cc7 LT |
1003 | { |
1004 | struct acpi_battery *battery = seq->private; | |
e7b087fc | 1005 | int result = acpi_battery_update(battery, false); |
3a670cc7 LT |
1006 | |
1007 | if (result) | |
1008 | goto end; | |
1009 | ||
1010 | seq_printf(seq, "present: %s\n", | |
1011 | acpi_battery_present(battery) ? "yes" : "no"); | |
1012 | if (!acpi_battery_present(battery)) | |
1013 | goto end; | |
1014 | if (battery->design_capacity == ACPI_BATTERY_VALUE_UNKNOWN) | |
1015 | seq_printf(seq, "design capacity: unknown\n"); | |
1016 | else | |
1017 | seq_printf(seq, "design capacity: %d %sh\n", | |
1018 | battery->design_capacity, | |
1019 | acpi_battery_units(battery)); | |
1020 | ||
1021 | if (battery->full_charge_capacity == ACPI_BATTERY_VALUE_UNKNOWN) | |
1022 | seq_printf(seq, "last full capacity: unknown\n"); | |
1023 | else | |
1024 | seq_printf(seq, "last full capacity: %d %sh\n", | |
1025 | battery->full_charge_capacity, | |
1026 | acpi_battery_units(battery)); | |
1027 | ||
1028 | seq_printf(seq, "battery technology: %srechargeable\n", | |
2754435d | 1029 | battery->technology ? "" : "non-"); |
3a670cc7 LT |
1030 | |
1031 | if (battery->design_voltage == ACPI_BATTERY_VALUE_UNKNOWN) | |
1032 | seq_printf(seq, "design voltage: unknown\n"); | |
1033 | else | |
1034 | seq_printf(seq, "design voltage: %d mV\n", | |
1035 | battery->design_voltage); | |
1036 | seq_printf(seq, "design capacity warning: %d %sh\n", | |
1037 | battery->design_capacity_warning, | |
1038 | acpi_battery_units(battery)); | |
1039 | seq_printf(seq, "design capacity low: %d %sh\n", | |
1040 | battery->design_capacity_low, | |
1041 | acpi_battery_units(battery)); | |
1042 | seq_printf(seq, "cycle count: %i\n", battery->cycle_count); | |
1043 | seq_printf(seq, "capacity granularity 1: %d %sh\n", | |
1044 | battery->capacity_granularity_1, | |
1045 | acpi_battery_units(battery)); | |
1046 | seq_printf(seq, "capacity granularity 2: %d %sh\n", | |
1047 | battery->capacity_granularity_2, | |
1048 | acpi_battery_units(battery)); | |
1049 | seq_printf(seq, "model number: %s\n", battery->model_number); | |
1050 | seq_printf(seq, "serial number: %s\n", battery->serial_number); | |
1051 | seq_printf(seq, "battery type: %s\n", battery->type); | |
1052 | seq_printf(seq, "OEM info: %s\n", battery->oem_info); | |
1053 | end: | |
1054 | if (result) | |
1055 | seq_printf(seq, "ERROR: Unable to read battery info\n"); | |
1056 | return result; | |
1057 | } | |
1058 | ||
e7b087fc | 1059 | static int acpi_battery_state_proc_show(struct seq_file *seq, void *offset) |
3a670cc7 LT |
1060 | { |
1061 | struct acpi_battery *battery = seq->private; | |
e7b087fc | 1062 | int result = acpi_battery_update(battery, false); |
3a670cc7 LT |
1063 | |
1064 | if (result) | |
1065 | goto end; | |
1066 | ||
1067 | seq_printf(seq, "present: %s\n", | |
1068 | acpi_battery_present(battery) ? "yes" : "no"); | |
1069 | if (!acpi_battery_present(battery)) | |
1070 | goto end; | |
1071 | ||
1072 | seq_printf(seq, "capacity state: %s\n", | |
1073 | (battery->state & 0x04) ? "critical" : "ok"); | |
1074 | if ((battery->state & 0x01) && (battery->state & 0x02)) | |
1075 | seq_printf(seq, | |
1076 | "charging state: charging/discharging\n"); | |
1077 | else if (battery->state & 0x01) | |
1078 | seq_printf(seq, "charging state: discharging\n"); | |
1079 | else if (battery->state & 0x02) | |
1080 | seq_printf(seq, "charging state: charging\n"); | |
1081 | else | |
1082 | seq_printf(seq, "charging state: charged\n"); | |
1083 | ||
1084 | if (battery->rate_now == ACPI_BATTERY_VALUE_UNKNOWN) | |
1085 | seq_printf(seq, "present rate: unknown\n"); | |
1086 | else | |
1087 | seq_printf(seq, "present rate: %d %s\n", | |
1088 | battery->rate_now, acpi_battery_units(battery)); | |
1089 | ||
1090 | if (battery->capacity_now == ACPI_BATTERY_VALUE_UNKNOWN) | |
1091 | seq_printf(seq, "remaining capacity: unknown\n"); | |
1092 | else | |
1093 | seq_printf(seq, "remaining capacity: %d %sh\n", | |
1094 | battery->capacity_now, acpi_battery_units(battery)); | |
1095 | if (battery->voltage_now == ACPI_BATTERY_VALUE_UNKNOWN) | |
1096 | seq_printf(seq, "present voltage: unknown\n"); | |
1097 | else | |
1098 | seq_printf(seq, "present voltage: %d mV\n", | |
1099 | battery->voltage_now); | |
1100 | end: | |
1101 | if (result) | |
1102 | seq_printf(seq, "ERROR: Unable to read battery state\n"); | |
1103 | ||
1104 | return result; | |
1105 | } | |
1106 | ||
e7b087fc | 1107 | static int acpi_battery_alarm_proc_show(struct seq_file *seq, void *offset) |
3a670cc7 LT |
1108 | { |
1109 | struct acpi_battery *battery = seq->private; | |
e7b087fc | 1110 | int result = acpi_battery_update(battery, false); |
3a670cc7 LT |
1111 | |
1112 | if (result) | |
1113 | goto end; | |
1114 | ||
1115 | if (!acpi_battery_present(battery)) { | |
1116 | seq_printf(seq, "present: no\n"); | |
1117 | goto end; | |
1118 | } | |
1119 | seq_printf(seq, "alarm: "); | |
2754435d | 1120 | if (battery->alarm) { |
3a670cc7 LT |
1121 | seq_printf(seq, "%u %sh\n", battery->alarm, |
1122 | acpi_battery_units(battery)); | |
2754435d DR |
1123 | } else { |
1124 | seq_printf(seq, "unsupported\n"); | |
1125 | } | |
3a670cc7 LT |
1126 | end: |
1127 | if (result) | |
1128 | seq_printf(seq, "ERROR: Unable to read battery alarm\n"); | |
1129 | return result; | |
1130 | } | |
1131 | ||
1132 | static ssize_t acpi_battery_write_alarm(struct file *file, | |
1133 | const char __user * buffer, | |
1134 | size_t count, loff_t * ppos) | |
1135 | { | |
1136 | int result = 0; | |
1137 | char alarm_string[12] = { '\0' }; | |
1138 | struct seq_file *m = file->private_data; | |
1139 | struct acpi_battery *battery = m->private; | |
1140 | ||
1141 | if (!battery || (count > sizeof(alarm_string) - 1)) | |
1142 | return -EINVAL; | |
1143 | if (!acpi_battery_present(battery)) { | |
1144 | result = -ENODEV; | |
1145 | goto end; | |
1146 | } | |
1147 | if (copy_from_user(alarm_string, buffer, count)) { | |
1148 | result = -EFAULT; | |
1149 | goto end; | |
1150 | } | |
1151 | alarm_string[count] = '\0'; | |
3d915894 CJ |
1152 | if (kstrtoint(alarm_string, 0, &battery->alarm)) { |
1153 | result = -EINVAL; | |
1154 | goto end; | |
1155 | } | |
3a670cc7 LT |
1156 | result = acpi_battery_set_alarm(battery); |
1157 | end: | |
2754435d DR |
1158 | if (result) |
1159 | return result; | |
1160 | return count; | |
3a670cc7 LT |
1161 | } |
1162 | ||
e7b087fc | 1163 | static int acpi_battery_alarm_proc_open(struct inode *inode, struct file *file) |
3a670cc7 | 1164 | { |
e7b087fc | 1165 | return single_open(file, acpi_battery_alarm_proc_show, PDE_DATA(inode)); |
3a670cc7 LT |
1166 | } |
1167 | ||
e7b087fc CH |
1168 | static const struct file_operations acpi_battery_alarm_fops = { |
1169 | .owner = THIS_MODULE, | |
1170 | .open = acpi_battery_alarm_proc_open, | |
1171 | .read = seq_read, | |
1172 | .write = acpi_battery_write_alarm, | |
1173 | .llseek = seq_lseek, | |
1174 | .release = single_release, | |
3a670cc7 LT |
1175 | }; |
1176 | ||
3a670cc7 LT |
1177 | static int acpi_battery_add_fs(struct acpi_device *device) |
1178 | { | |
dd1fca9e | 1179 | pr_warning(PREFIX "Deprecated procfs I/F for battery is loaded, please retry with CONFIG_ACPI_PROCFS_POWER cleared\n"); |
3a670cc7 LT |
1180 | if (!acpi_device_dir(device)) { |
1181 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
1182 | acpi_battery_dir); | |
1183 | if (!acpi_device_dir(device)) | |
1184 | return -ENODEV; | |
1185 | } | |
1186 | ||
e7b087fc CH |
1187 | if (!proc_create_single_data("info", S_IRUGO, acpi_device_dir(device), |
1188 | acpi_battery_info_proc_show, acpi_driver_data(device))) | |
1189 | return -ENODEV; | |
1190 | if (!proc_create_single_data("state", S_IRUGO, acpi_device_dir(device), | |
1191 | acpi_battery_state_proc_show, acpi_driver_data(device))) | |
1192 | return -ENODEV; | |
1193 | if (!proc_create_data("alarm", S_IFREG | S_IRUGO | S_IWUSR, | |
1194 | acpi_device_dir(device), &acpi_battery_alarm_fops, | |
1195 | acpi_driver_data(device))) | |
1196 | return -ENODEV; | |
3a670cc7 LT |
1197 | return 0; |
1198 | } | |
1199 | ||
1200 | static void acpi_battery_remove_fs(struct acpi_device *device) | |
1201 | { | |
3a670cc7 LT |
1202 | if (!acpi_device_dir(device)) |
1203 | return; | |
e7b087fc | 1204 | remove_proc_subtree(acpi_device_bid(device), acpi_battery_dir); |
3a670cc7 LT |
1205 | acpi_device_dir(device) = NULL; |
1206 | } | |
1207 | ||
1208 | #endif | |
1209 | ||
1da177e4 LT |
1210 | /* -------------------------------------------------------------------------- |
1211 | Driver Interface | |
1212 | -------------------------------------------------------------------------- */ | |
1213 | ||
d9406691 | 1214 | static void acpi_battery_notify(struct acpi_device *device, u32 event) |
1da177e4 | 1215 | { |
d9406691 | 1216 | struct acpi_battery *battery = acpi_driver_data(device); |
297d716f | 1217 | struct power_supply *old; |
d9406691 | 1218 | |
1da177e4 | 1219 | if (!battery) |
d550d98d | 1220 | return; |
297d716f | 1221 | old = battery->bat; |
f43691c6 AM |
1222 | /* |
1223 | * On Acer Aspire V5-573G notifications are sometimes triggered too | |
1224 | * early. For example, when AC is unplugged and notification is | |
1225 | * triggered, battery state is still reported as "Full", and changes to | |
1226 | * "Discharging" only after short delay, without any notification. | |
1227 | */ | |
1228 | if (battery_notification_delay_ms > 0) | |
1229 | msleep(battery_notification_delay_ms); | |
da8aeb92 RW |
1230 | if (event == ACPI_BATTERY_NOTIFY_INFO) |
1231 | acpi_battery_refresh(battery); | |
9e50bc14 | 1232 | acpi_battery_update(battery, false); |
f1d4661a | 1233 | acpi_bus_generate_netlink_event(device->pnp.device_class, |
0794469d | 1234 | dev_name(&device->dev), event, |
9ea7d575 | 1235 | acpi_battery_present(battery)); |
411e0f77 | 1236 | acpi_notifier_call_chain(device, event, acpi_battery_present(battery)); |
2345baf4 | 1237 | /* acpi_battery_update could remove power_supply object */ |
297d716f KK |
1238 | if (old && battery->bat) |
1239 | power_supply_changed(battery->bat); | |
1da177e4 LT |
1240 | } |
1241 | ||
25be5821 KM |
1242 | static int battery_notify(struct notifier_block *nb, |
1243 | unsigned long mode, void *_unused) | |
1244 | { | |
1245 | struct acpi_battery *battery = container_of(nb, struct acpi_battery, | |
1246 | pm_nb); | |
9e50bc14 LT |
1247 | int result; |
1248 | ||
25be5821 | 1249 | switch (mode) { |
d5a5911b | 1250 | case PM_POST_HIBERNATION: |
25be5821 | 1251 | case PM_POST_SUSPEND: |
9e50bc14 LT |
1252 | if (!acpi_battery_present(battery)) |
1253 | return 0; | |
1254 | ||
2754435d DR |
1255 | if (battery->bat) { |
1256 | acpi_battery_refresh(battery); | |
1257 | } else { | |
9e50bc14 LT |
1258 | result = acpi_battery_get_info(battery); |
1259 | if (result) | |
1260 | return result; | |
1261 | ||
1262 | result = sysfs_add_battery(battery); | |
1263 | if (result) | |
1264 | return result; | |
2754435d | 1265 | } |
9e50bc14 LT |
1266 | |
1267 | acpi_battery_init_alarm(battery); | |
1268 | acpi_battery_get_state(battery); | |
25be5821 KM |
1269 | break; |
1270 | } | |
1271 | ||
1272 | return 0; | |
1273 | } | |
1274 | ||
048d16da MK |
1275 | static int __init |
1276 | battery_bix_broken_package_quirk(const struct dmi_system_id *d) | |
3f5dc08f AM |
1277 | { |
1278 | battery_bix_broken_package = 1; | |
1279 | return 0; | |
1280 | } | |
1281 | ||
048d16da MK |
1282 | static int __init |
1283 | battery_notification_delay_quirk(const struct dmi_system_id *d) | |
f43691c6 AM |
1284 | { |
1285 | battery_notification_delay_ms = 1000; | |
1286 | return 0; | |
1287 | } | |
1288 | ||
1b799c5c HG |
1289 | static int __init |
1290 | battery_ac_is_broken_quirk(const struct dmi_system_id *d) | |
1291 | { | |
1292 | battery_ac_is_broken = 1; | |
1293 | return 0; | |
1294 | } | |
1295 | ||
ec625a37 CC |
1296 | static int __init |
1297 | battery_do_not_check_pmic_quirk(const struct dmi_system_id *d) | |
1298 | { | |
1299 | battery_check_pmic = 0; | |
1300 | return 0; | |
1301 | } | |
1302 | ||
048d16da | 1303 | static const struct dmi_system_id bat_dmi_table[] __initconst = { |
a90b4038 | 1304 | { |
91afa076 | 1305 | /* NEC LZ750/LS */ |
3f5dc08f | 1306 | .callback = battery_bix_broken_package_quirk, |
a90b4038 LT |
1307 | .matches = { |
1308 | DMI_MATCH(DMI_SYS_VENDOR, "NEC"), | |
1309 | DMI_MATCH(DMI_PRODUCT_NAME, "PC-LZ750LS"), | |
1310 | }, | |
1311 | }, | |
f43691c6 | 1312 | { |
91afa076 | 1313 | /* Acer Aspire V5-573G */ |
f43691c6 | 1314 | .callback = battery_notification_delay_quirk, |
f43691c6 AM |
1315 | .matches = { |
1316 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
1317 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire V5-573G"), | |
1318 | }, | |
1319 | }, | |
1b799c5c HG |
1320 | { |
1321 | /* Point of View mobii wintab p800w */ | |
1322 | .callback = battery_ac_is_broken_quirk, | |
1323 | .matches = { | |
1324 | DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"), | |
1325 | DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"), | |
1326 | DMI_MATCH(DMI_BIOS_VERSION, "3BAIR1013"), | |
1327 | /* Above matches are too generic, add bios-date match */ | |
1328 | DMI_MATCH(DMI_BIOS_DATE, "08/22/2014"), | |
1329 | }, | |
1330 | }, | |
ec625a37 CC |
1331 | { |
1332 | /* ECS EF20EA */ | |
1333 | .callback = battery_do_not_check_pmic_quirk, | |
1334 | .matches = { | |
1335 | DMI_MATCH(DMI_PRODUCT_NAME, "EF20EA"), | |
1336 | }, | |
1337 | }, | |
1338 | { | |
1339 | /* Lenovo Ideapad Miix 320 */ | |
1340 | .callback = battery_do_not_check_pmic_quirk, | |
1341 | .matches = { | |
1342 | DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"), | |
1343 | DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "80XF"), | |
1344 | DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Lenovo MIIX 320-10ICR"), | |
1345 | }, | |
1346 | }, | |
a90b4038 LT |
1347 | {}, |
1348 | }; | |
1349 | ||
75646e75 LT |
1350 | /* |
1351 | * Some machines'(E,G Lenovo Z480) ECs are not stable | |
1352 | * during boot up and this causes battery driver fails to be | |
1353 | * probed due to failure of getting battery information | |
1354 | * from EC sometimes. After several retries, the operation | |
1355 | * may work. So add retry code here and 20ms sleep between | |
1356 | * every retries. | |
1357 | */ | |
1358 | static int acpi_battery_update_retry(struct acpi_battery *battery) | |
1359 | { | |
1360 | int retry, ret; | |
1361 | ||
1362 | for (retry = 5; retry; retry--) { | |
1363 | ret = acpi_battery_update(battery, false); | |
1364 | if (!ret) | |
1365 | break; | |
1366 | ||
1367 | msleep(20); | |
1368 | } | |
1369 | return ret; | |
1370 | } | |
1371 | ||
4be44fcd | 1372 | static int acpi_battery_add(struct acpi_device *device) |
1da177e4 | 1373 | { |
4be44fcd | 1374 | int result = 0; |
4be44fcd | 1375 | struct acpi_battery *battery = NULL; |
952c63e9 | 1376 | |
1da177e4 | 1377 | if (!device) |
d550d98d | 1378 | return -EINVAL; |
40e7fcb1 LT |
1379 | |
1380 | if (device->dep_unmet) | |
1381 | return -EPROBE_DEFER; | |
1382 | ||
36bcbec7 | 1383 | battery = kzalloc(sizeof(struct acpi_battery), GFP_KERNEL); |
1da177e4 | 1384 | if (!battery) |
d550d98d | 1385 | return -ENOMEM; |
145def84 | 1386 | battery->device = device; |
1da177e4 LT |
1387 | strcpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME); |
1388 | strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS); | |
db89b4f0 | 1389 | device->driver_data = battery; |
038fdea2 | 1390 | mutex_init(&battery->lock); |
69d94ec6 | 1391 | mutex_init(&battery->sysfs_lock); |
952c63e9 | 1392 | if (acpi_has_method(battery->device->handle, "_BIX")) |
c67fcd67 | 1393 | set_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags); |
75646e75 LT |
1394 | |
1395 | result = acpi_battery_update_retry(battery); | |
eb03cb02 SH |
1396 | if (result) |
1397 | goto fail; | |
75646e75 | 1398 | |
3a670cc7 LT |
1399 | #ifdef CONFIG_ACPI_PROCFS_POWER |
1400 | result = acpi_battery_add_fs(device); | |
3a670cc7 | 1401 | if (result) { |
3a670cc7 | 1402 | acpi_battery_remove_fs(device); |
3a670cc7 LT |
1403 | goto fail; |
1404 | } | |
6993ce46 | 1405 | #endif |
25be5821 | 1406 | |
dd1fca9e | 1407 | pr_info(PREFIX "%s Slot [%s] (battery %s)\n", |
e80bba4b SH |
1408 | ACPI_BATTERY_DEVICE_NAME, acpi_device_bid(device), |
1409 | device->status.battery_present ? "present" : "absent"); | |
1410 | ||
25be5821 KM |
1411 | battery->pm_nb.notifier_call = battery_notify; |
1412 | register_pm_notifier(&battery->pm_nb); | |
1413 | ||
e0d1f09e ZR |
1414 | device_init_wakeup(&device->dev, 1); |
1415 | ||
d550d98d | 1416 | return result; |
e80bba4b SH |
1417 | |
1418 | fail: | |
1419 | sysfs_remove_battery(battery); | |
1420 | mutex_destroy(&battery->lock); | |
69d94ec6 | 1421 | mutex_destroy(&battery->sysfs_lock); |
e80bba4b SH |
1422 | kfree(battery); |
1423 | return result; | |
1da177e4 LT |
1424 | } |
1425 | ||
51fac838 | 1426 | static int acpi_battery_remove(struct acpi_device *device) |
1da177e4 | 1427 | { |
4be44fcd | 1428 | struct acpi_battery *battery = NULL; |
1da177e4 | 1429 | |
1da177e4 | 1430 | if (!device || !acpi_driver_data(device)) |
d550d98d | 1431 | return -EINVAL; |
e0d1f09e | 1432 | device_init_wakeup(&device->dev, 0); |
50dd0969 | 1433 | battery = acpi_driver_data(device); |
25be5821 | 1434 | unregister_pm_notifier(&battery->pm_nb); |
3a670cc7 LT |
1435 | #ifdef CONFIG_ACPI_PROCFS_POWER |
1436 | acpi_battery_remove_fs(device); | |
1437 | #endif | |
508df92d | 1438 | sysfs_remove_battery(battery); |
038fdea2 | 1439 | mutex_destroy(&battery->lock); |
69d94ec6 | 1440 | mutex_destroy(&battery->sysfs_lock); |
1da177e4 | 1441 | kfree(battery); |
d550d98d | 1442 | return 0; |
1da177e4 LT |
1443 | } |
1444 | ||
90692404 | 1445 | #ifdef CONFIG_PM_SLEEP |
34c4415a | 1446 | /* this is needed to learn about changes made in suspended state */ |
a6f50dc8 | 1447 | static int acpi_battery_resume(struct device *dev) |
34c4415a JK |
1448 | { |
1449 | struct acpi_battery *battery; | |
a6f50dc8 RW |
1450 | |
1451 | if (!dev) | |
34c4415a | 1452 | return -EINVAL; |
a6f50dc8 RW |
1453 | |
1454 | battery = acpi_driver_data(to_acpi_device(dev)); | |
1455 | if (!battery) | |
1456 | return -EINVAL; | |
1457 | ||
f1d4661a | 1458 | battery->update_time = 0; |
9e50bc14 | 1459 | acpi_battery_update(battery, true); |
b6ce4083 | 1460 | return 0; |
34c4415a | 1461 | } |
7f6895c6 SK |
1462 | #else |
1463 | #define acpi_battery_resume NULL | |
90692404 | 1464 | #endif |
34c4415a | 1465 | |
a6f50dc8 RW |
1466 | static SIMPLE_DEV_PM_OPS(acpi_battery_pm, NULL, acpi_battery_resume); |
1467 | ||
aa650bbd AS |
1468 | static struct acpi_driver acpi_battery_driver = { |
1469 | .name = "battery", | |
1470 | .class = ACPI_BATTERY_CLASS, | |
1471 | .ids = battery_device_ids, | |
d9406691 | 1472 | .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, |
aa650bbd AS |
1473 | .ops = { |
1474 | .add = acpi_battery_add, | |
aa650bbd | 1475 | .remove = acpi_battery_remove, |
d9406691 | 1476 | .notify = acpi_battery_notify, |
aa650bbd | 1477 | }, |
a6f50dc8 | 1478 | .drv.pm = &acpi_battery_pm, |
aa650bbd AS |
1479 | }; |
1480 | ||
b0cbc861 | 1481 | static void __init acpi_battery_init_async(void *unused, async_cookie_t cookie) |
1da177e4 | 1482 | { |
dccfae6d | 1483 | unsigned int i; |
479faaf0 LH |
1484 | int result; |
1485 | ||
3f5dc08f | 1486 | dmi_check_system(bat_dmi_table); |
479faaf0 | 1487 | |
ec625a37 CC |
1488 | if (battery_check_pmic) { |
1489 | for (i = 0; i < ARRAY_SIZE(acpi_battery_blacklist); i++) | |
1490 | if (acpi_dev_present(acpi_battery_blacklist[i], "1", -1)) { | |
1491 | pr_info(PREFIX ACPI_BATTERY_DEVICE_NAME | |
1492 | ": found native %s PMIC, not loading\n", | |
1493 | acpi_battery_blacklist[i]); | |
1494 | return; | |
1495 | } | |
1496 | } | |
1497 | ||
3a670cc7 LT |
1498 | #ifdef CONFIG_ACPI_PROCFS_POWER |
1499 | acpi_battery_dir = acpi_lock_battery_dir(); | |
1500 | if (!acpi_battery_dir) | |
1501 | return; | |
1502 | #endif | |
479faaf0 | 1503 | result = acpi_bus_register_driver(&acpi_battery_driver); |
3a670cc7 | 1504 | #ifdef CONFIG_ACPI_PROCFS_POWER |
479faaf0 | 1505 | if (result < 0) |
3a670cc7 LT |
1506 | acpi_unlock_battery_dir(acpi_battery_dir); |
1507 | #endif | |
bc39fbcf | 1508 | battery_driver_registered = (result == 0); |
0f66af53 AV |
1509 | } |
1510 | ||
1511 | static int __init acpi_battery_init(void) | |
1512 | { | |
e234b074 LH |
1513 | if (acpi_disabled) |
1514 | return -ENODEV; | |
1515 | ||
eca21d91 | 1516 | async_cookie = async_schedule(acpi_battery_init_async, NULL); |
d550d98d | 1517 | return 0; |
1da177e4 LT |
1518 | } |
1519 | ||
4be44fcd | 1520 | static void __exit acpi_battery_exit(void) |
1da177e4 | 1521 | { |
5dfa0c73 | 1522 | async_synchronize_cookie(async_cookie + 1); |
fa93854f | 1523 | if (battery_driver_registered) { |
bc39fbcf | 1524 | acpi_bus_unregister_driver(&acpi_battery_driver); |
fa93854f OG |
1525 | battery_hook_exit(); |
1526 | } | |
3a670cc7 | 1527 | #ifdef CONFIG_ACPI_PROCFS_POWER |
bc39fbcf HG |
1528 | if (acpi_battery_dir) |
1529 | acpi_unlock_battery_dir(acpi_battery_dir); | |
3a670cc7 | 1530 | #endif |
1da177e4 LT |
1531 | } |
1532 | ||
1da177e4 LT |
1533 | module_init(acpi_battery_init); |
1534 | module_exit(acpi_battery_exit); |