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Commit | Line | Data |
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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 | * | |
21 | * You should have received a copy of the GNU General Public License along | |
22 | * with this program; if not, write to the Free Software Foundation, Inc., | |
23 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
24 | * | |
25 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
26 | */ | |
27 | ||
28 | #include <linux/kernel.h> | |
29 | #include <linux/module.h> | |
30 | #include <linux/init.h> | |
31 | #include <linux/types.h> | |
f1d4661a | 32 | #include <linux/jiffies.h> |
d7380965 | 33 | |
fdcedbba | 34 | #ifdef CONFIG_ACPI_PROCFS_POWER |
1da177e4 LT |
35 | #include <linux/proc_fs.h> |
36 | #include <linux/seq_file.h> | |
37 | #include <asm/uaccess.h> | |
d7380965 | 38 | #endif |
1da177e4 LT |
39 | |
40 | #include <acpi/acpi_bus.h> | |
41 | #include <acpi/acpi_drivers.h> | |
42 | ||
97749cd9 | 43 | #ifdef CONFIG_ACPI_SYSFS_POWER |
d7380965 | 44 | #include <linux/power_supply.h> |
97749cd9 | 45 | #endif |
d7380965 | 46 | |
1da177e4 LT |
47 | #define ACPI_BATTERY_VALUE_UNKNOWN 0xFFFFFFFF |
48 | ||
1da177e4 LT |
49 | #define ACPI_BATTERY_COMPONENT 0x00040000 |
50 | #define ACPI_BATTERY_CLASS "battery" | |
1da177e4 | 51 | #define ACPI_BATTERY_DEVICE_NAME "Battery" |
1da177e4 LT |
52 | #define ACPI_BATTERY_NOTIFY_STATUS 0x80 |
53 | #define ACPI_BATTERY_NOTIFY_INFO 0x81 | |
1da177e4 | 54 | |
1da177e4 | 55 | #define _COMPONENT ACPI_BATTERY_COMPONENT |
b6ce4083 | 56 | |
f52fd66d | 57 | ACPI_MODULE_NAME("battery"); |
1da177e4 | 58 | |
f52fd66d | 59 | MODULE_AUTHOR("Paul Diefenbaugh"); |
aa650bbd | 60 | MODULE_AUTHOR("Alexey Starikovskiy <astarikovskiy@suse.de>"); |
7cda93e0 | 61 | MODULE_DESCRIPTION("ACPI Battery Driver"); |
1da177e4 LT |
62 | MODULE_LICENSE("GPL"); |
63 | ||
f1d4661a AS |
64 | static unsigned int cache_time = 1000; |
65 | module_param(cache_time, uint, 0644); | |
66 | MODULE_PARM_DESC(cache_time, "cache time in milliseconds"); | |
b6ce4083 | 67 | |
fdcedbba | 68 | #ifdef CONFIG_ACPI_PROCFS_POWER |
3f86b832 RT |
69 | extern struct proc_dir_entry *acpi_lock_battery_dir(void); |
70 | extern void *acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir); | |
71 | ||
d7380965 AS |
72 | enum acpi_battery_files { |
73 | info_tag = 0, | |
74 | state_tag, | |
75 | alarm_tag, | |
76 | ACPI_BATTERY_NUMFILES, | |
77 | }; | |
78 | ||
79 | #endif | |
80 | ||
1ba90e3a TR |
81 | static const struct acpi_device_id battery_device_ids[] = { |
82 | {"PNP0C0A", 0}, | |
83 | {"", 0}, | |
84 | }; | |
1ba90e3a | 85 | |
aa650bbd | 86 | MODULE_DEVICE_TABLE(acpi, battery_device_ids); |
1da177e4 | 87 | |
78490d82 | 88 | |
1da177e4 | 89 | struct acpi_battery { |
038fdea2 | 90 | struct mutex lock; |
97749cd9 | 91 | #ifdef CONFIG_ACPI_SYSFS_POWER |
d7380965 | 92 | struct power_supply bat; |
97749cd9 | 93 | #endif |
f1d4661a AS |
94 | struct acpi_device *device; |
95 | unsigned long update_time; | |
d7380965 AS |
96 | int current_now; |
97 | int capacity_now; | |
98 | int voltage_now; | |
038fdea2 | 99 | int design_capacity; |
d7380965 | 100 | int full_charge_capacity; |
038fdea2 AS |
101 | int technology; |
102 | int design_voltage; | |
103 | int design_capacity_warning; | |
104 | int design_capacity_low; | |
105 | int capacity_granularity_1; | |
106 | int capacity_granularity_2; | |
f1d4661a | 107 | int alarm; |
038fdea2 AS |
108 | char model_number[32]; |
109 | char serial_number[32]; | |
110 | char type[32]; | |
111 | char oem_info[32]; | |
f1d4661a AS |
112 | int state; |
113 | int power_unit; | |
038fdea2 | 114 | u8 alarm_present; |
1da177e4 LT |
115 | }; |
116 | ||
d7380965 AS |
117 | #define to_acpi_battery(x) container_of(x, struct acpi_battery, bat); |
118 | ||
78490d82 | 119 | inline int acpi_battery_present(struct acpi_battery *battery) |
b6ce4083 | 120 | { |
78490d82 AS |
121 | return battery->device->status.battery_present; |
122 | } | |
038fdea2 | 123 | |
97749cd9 | 124 | #ifdef CONFIG_ACPI_SYSFS_POWER |
d7380965 AS |
125 | static int acpi_battery_technology(struct acpi_battery *battery) |
126 | { | |
127 | if (!strcasecmp("NiCd", battery->type)) | |
128 | return POWER_SUPPLY_TECHNOLOGY_NiCd; | |
129 | if (!strcasecmp("NiMH", battery->type)) | |
130 | return POWER_SUPPLY_TECHNOLOGY_NiMH; | |
131 | if (!strcasecmp("LION", battery->type)) | |
132 | return POWER_SUPPLY_TECHNOLOGY_LION; | |
ad40e68b | 133 | if (!strncasecmp("LI-ION", battery->type, 6)) |
0bde7eee | 134 | return POWER_SUPPLY_TECHNOLOGY_LION; |
d7380965 AS |
135 | if (!strcasecmp("LiP", battery->type)) |
136 | return POWER_SUPPLY_TECHNOLOGY_LIPO; | |
137 | return POWER_SUPPLY_TECHNOLOGY_UNKNOWN; | |
138 | } | |
139 | ||
9104476e | 140 | static int acpi_battery_get_state(struct acpi_battery *battery); |
b19073a0 | 141 | |
d7380965 AS |
142 | static int acpi_battery_get_property(struct power_supply *psy, |
143 | enum power_supply_property psp, | |
144 | union power_supply_propval *val) | |
145 | { | |
146 | struct acpi_battery *battery = to_acpi_battery(psy); | |
147 | ||
9104476e AS |
148 | if (acpi_battery_present(battery)) { |
149 | /* run battery update only if it is present */ | |
150 | acpi_battery_get_state(battery); | |
151 | } else if (psp != POWER_SUPPLY_PROP_PRESENT) | |
d7380965 AS |
152 | return -ENODEV; |
153 | switch (psp) { | |
154 | case POWER_SUPPLY_PROP_STATUS: | |
155 | if (battery->state & 0x01) | |
156 | val->intval = POWER_SUPPLY_STATUS_DISCHARGING; | |
157 | else if (battery->state & 0x02) | |
158 | val->intval = POWER_SUPPLY_STATUS_CHARGING; | |
159 | else if (battery->state == 0) | |
160 | val->intval = POWER_SUPPLY_STATUS_FULL; | |
4c41d3ad RD |
161 | else |
162 | val->intval = POWER_SUPPLY_STATUS_UNKNOWN; | |
d7380965 AS |
163 | break; |
164 | case POWER_SUPPLY_PROP_PRESENT: | |
165 | val->intval = acpi_battery_present(battery); | |
166 | break; | |
167 | case POWER_SUPPLY_PROP_TECHNOLOGY: | |
168 | val->intval = acpi_battery_technology(battery); | |
169 | break; | |
170 | case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: | |
171 | val->intval = battery->design_voltage * 1000; | |
172 | break; | |
173 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
174 | val->intval = battery->voltage_now * 1000; | |
175 | break; | |
176 | case POWER_SUPPLY_PROP_CURRENT_NOW: | |
177 | val->intval = battery->current_now * 1000; | |
178 | break; | |
179 | case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: | |
180 | case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: | |
181 | val->intval = battery->design_capacity * 1000; | |
182 | break; | |
183 | case POWER_SUPPLY_PROP_CHARGE_FULL: | |
184 | case POWER_SUPPLY_PROP_ENERGY_FULL: | |
185 | val->intval = battery->full_charge_capacity * 1000; | |
186 | break; | |
187 | case POWER_SUPPLY_PROP_CHARGE_NOW: | |
188 | case POWER_SUPPLY_PROP_ENERGY_NOW: | |
189 | val->intval = battery->capacity_now * 1000; | |
190 | break; | |
191 | case POWER_SUPPLY_PROP_MODEL_NAME: | |
192 | val->strval = battery->model_number; | |
193 | break; | |
194 | case POWER_SUPPLY_PROP_MANUFACTURER: | |
195 | val->strval = battery->oem_info; | |
196 | break; | |
7c2670bb | 197 | case POWER_SUPPLY_PROP_SERIAL_NUMBER: |
198 | val->strval = battery->serial_number; | |
199 | break; | |
d7380965 AS |
200 | default: |
201 | return -EINVAL; | |
202 | } | |
203 | return 0; | |
204 | } | |
205 | ||
206 | static enum power_supply_property charge_battery_props[] = { | |
207 | POWER_SUPPLY_PROP_STATUS, | |
208 | POWER_SUPPLY_PROP_PRESENT, | |
209 | POWER_SUPPLY_PROP_TECHNOLOGY, | |
210 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, | |
211 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
212 | POWER_SUPPLY_PROP_CURRENT_NOW, | |
213 | POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, | |
214 | POWER_SUPPLY_PROP_CHARGE_FULL, | |
215 | POWER_SUPPLY_PROP_CHARGE_NOW, | |
216 | POWER_SUPPLY_PROP_MODEL_NAME, | |
217 | POWER_SUPPLY_PROP_MANUFACTURER, | |
7c2670bb | 218 | POWER_SUPPLY_PROP_SERIAL_NUMBER, |
d7380965 AS |
219 | }; |
220 | ||
221 | static enum power_supply_property energy_battery_props[] = { | |
222 | POWER_SUPPLY_PROP_STATUS, | |
223 | POWER_SUPPLY_PROP_PRESENT, | |
224 | POWER_SUPPLY_PROP_TECHNOLOGY, | |
225 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, | |
226 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
227 | POWER_SUPPLY_PROP_CURRENT_NOW, | |
228 | POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, | |
229 | POWER_SUPPLY_PROP_ENERGY_FULL, | |
230 | POWER_SUPPLY_PROP_ENERGY_NOW, | |
231 | POWER_SUPPLY_PROP_MODEL_NAME, | |
232 | POWER_SUPPLY_PROP_MANUFACTURER, | |
7c2670bb | 233 | POWER_SUPPLY_PROP_SERIAL_NUMBER, |
d7380965 | 234 | }; |
97749cd9 | 235 | #endif |
d7380965 | 236 | |
fdcedbba | 237 | #ifdef CONFIG_ACPI_PROCFS_POWER |
f1d4661a | 238 | inline char *acpi_battery_units(struct acpi_battery *battery) |
78490d82 | 239 | { |
f1d4661a | 240 | return (battery->power_unit)?"mA":"mW"; |
b6ce4083 | 241 | } |
d7380965 | 242 | #endif |
b6ce4083 | 243 | |
78490d82 AS |
244 | /* -------------------------------------------------------------------------- |
245 | Battery Management | |
246 | -------------------------------------------------------------------------- */ | |
038fdea2 AS |
247 | struct acpi_offsets { |
248 | size_t offset; /* offset inside struct acpi_sbs_battery */ | |
249 | u8 mode; /* int or string? */ | |
250 | }; | |
b6ce4083 | 251 | |
038fdea2 AS |
252 | static struct acpi_offsets state_offsets[] = { |
253 | {offsetof(struct acpi_battery, state), 0}, | |
d7380965 AS |
254 | {offsetof(struct acpi_battery, current_now), 0}, |
255 | {offsetof(struct acpi_battery, capacity_now), 0}, | |
256 | {offsetof(struct acpi_battery, voltage_now), 0}, | |
038fdea2 | 257 | }; |
b6ce4083 | 258 | |
038fdea2 AS |
259 | static struct acpi_offsets info_offsets[] = { |
260 | {offsetof(struct acpi_battery, power_unit), 0}, | |
261 | {offsetof(struct acpi_battery, design_capacity), 0}, | |
d7380965 | 262 | {offsetof(struct acpi_battery, full_charge_capacity), 0}, |
038fdea2 AS |
263 | {offsetof(struct acpi_battery, technology), 0}, |
264 | {offsetof(struct acpi_battery, design_voltage), 0}, | |
265 | {offsetof(struct acpi_battery, design_capacity_warning), 0}, | |
266 | {offsetof(struct acpi_battery, design_capacity_low), 0}, | |
267 | {offsetof(struct acpi_battery, capacity_granularity_1), 0}, | |
268 | {offsetof(struct acpi_battery, capacity_granularity_2), 0}, | |
269 | {offsetof(struct acpi_battery, model_number), 1}, | |
270 | {offsetof(struct acpi_battery, serial_number), 1}, | |
271 | {offsetof(struct acpi_battery, type), 1}, | |
272 | {offsetof(struct acpi_battery, oem_info), 1}, | |
273 | }; | |
b6ce4083 | 274 | |
038fdea2 AS |
275 | static int extract_package(struct acpi_battery *battery, |
276 | union acpi_object *package, | |
277 | struct acpi_offsets *offsets, int num) | |
278 | { | |
106449e8 | 279 | int i; |
038fdea2 AS |
280 | union acpi_object *element; |
281 | if (package->type != ACPI_TYPE_PACKAGE) | |
282 | return -EFAULT; | |
283 | for (i = 0; i < num; ++i) { | |
284 | if (package->package.count <= i) | |
285 | return -EFAULT; | |
286 | element = &package->package.elements[i]; | |
287 | if (offsets[i].mode) { | |
106449e8 AS |
288 | u8 *ptr = (u8 *)battery + offsets[i].offset; |
289 | if (element->type == ACPI_TYPE_STRING || | |
290 | element->type == ACPI_TYPE_BUFFER) | |
291 | strncpy(ptr, element->string.pointer, 32); | |
292 | else if (element->type == ACPI_TYPE_INTEGER) { | |
293 | strncpy(ptr, (u8 *)&element->integer.value, | |
294 | sizeof(acpi_integer)); | |
295 | ptr[sizeof(acpi_integer)] = 0; | |
296 | } else return -EFAULT; | |
038fdea2 | 297 | } else { |
106449e8 AS |
298 | if (element->type == ACPI_TYPE_INTEGER) { |
299 | int *x = (int *)((u8 *)battery + | |
300 | offsets[i].offset); | |
301 | *x = element->integer.value; | |
302 | } else return -EFAULT; | |
038fdea2 | 303 | } |
b6ce4083 | 304 | } |
b6ce4083 VL |
305 | return 0; |
306 | } | |
307 | ||
308 | static int acpi_battery_get_status(struct acpi_battery *battery) | |
309 | { | |
aa650bbd | 310 | if (acpi_bus_get_status(battery->device)) { |
b6ce4083 VL |
311 | ACPI_EXCEPTION((AE_INFO, AE_ERROR, "Evaluating _STA")); |
312 | return -ENODEV; | |
313 | } | |
aa650bbd | 314 | return 0; |
b6ce4083 VL |
315 | } |
316 | ||
317 | static int acpi_battery_get_info(struct acpi_battery *battery) | |
1da177e4 | 318 | { |
aa650bbd | 319 | int result = -EFAULT; |
4be44fcd LB |
320 | acpi_status status = 0; |
321 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
1da177e4 | 322 | |
b6ce4083 VL |
323 | if (!acpi_battery_present(battery)) |
324 | return 0; | |
038fdea2 | 325 | mutex_lock(&battery->lock); |
f1d4661a | 326 | status = acpi_evaluate_object(battery->device->handle, "_BIF", |
038fdea2 AS |
327 | NULL, &buffer); |
328 | mutex_unlock(&battery->lock); | |
aa650bbd | 329 | |
1da177e4 | 330 | if (ACPI_FAILURE(status)) { |
a6fc6720 | 331 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BIF")); |
d550d98d | 332 | return -ENODEV; |
1da177e4 | 333 | } |
aa650bbd | 334 | |
038fdea2 AS |
335 | result = extract_package(battery, buffer.pointer, |
336 | info_offsets, ARRAY_SIZE(info_offsets)); | |
78490d82 | 337 | kfree(buffer.pointer); |
d550d98d | 338 | return result; |
1da177e4 LT |
339 | } |
340 | ||
b6ce4083 | 341 | static int acpi_battery_get_state(struct acpi_battery *battery) |
1da177e4 | 342 | { |
4be44fcd LB |
343 | int result = 0; |
344 | acpi_status status = 0; | |
345 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
1da177e4 | 346 | |
b6ce4083 VL |
347 | if (!acpi_battery_present(battery)) |
348 | return 0; | |
1da177e4 | 349 | |
f1d4661a AS |
350 | if (battery->update_time && |
351 | time_before(jiffies, battery->update_time + | |
352 | msecs_to_jiffies(cache_time))) | |
353 | return 0; | |
354 | ||
038fdea2 | 355 | mutex_lock(&battery->lock); |
f1d4661a | 356 | status = acpi_evaluate_object(battery->device->handle, "_BST", |
038fdea2 AS |
357 | NULL, &buffer); |
358 | mutex_unlock(&battery->lock); | |
5b31d895 | 359 | |
1da177e4 | 360 | if (ACPI_FAILURE(status)) { |
a6fc6720 | 361 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BST")); |
d550d98d | 362 | return -ENODEV; |
1da177e4 | 363 | } |
aa650bbd | 364 | |
038fdea2 AS |
365 | result = extract_package(battery, buffer.pointer, |
366 | state_offsets, ARRAY_SIZE(state_offsets)); | |
f1d4661a | 367 | battery->update_time = jiffies; |
78490d82 | 368 | kfree(buffer.pointer); |
b6ce4083 VL |
369 | return result; |
370 | } | |
1da177e4 | 371 | |
aa650bbd | 372 | static int acpi_battery_set_alarm(struct acpi_battery *battery) |
1da177e4 | 373 | { |
4be44fcd | 374 | acpi_status status = 0; |
aa650bbd | 375 | union acpi_object arg0 = { .type = ACPI_TYPE_INTEGER }; |
4be44fcd | 376 | struct acpi_object_list arg_list = { 1, &arg0 }; |
1da177e4 | 377 | |
aa650bbd | 378 | if (!acpi_battery_present(battery)|| !battery->alarm_present) |
d550d98d | 379 | return -ENODEV; |
1da177e4 | 380 | |
aa650bbd | 381 | arg0.integer.value = battery->alarm; |
1da177e4 | 382 | |
038fdea2 | 383 | mutex_lock(&battery->lock); |
f1d4661a AS |
384 | status = acpi_evaluate_object(battery->device->handle, "_BTP", |
385 | &arg_list, NULL); | |
038fdea2 | 386 | mutex_unlock(&battery->lock); |
aa650bbd | 387 | |
1da177e4 | 388 | if (ACPI_FAILURE(status)) |
d550d98d | 389 | return -ENODEV; |
1da177e4 | 390 | |
aa650bbd | 391 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Alarm set to %d\n", battery->alarm)); |
d550d98d | 392 | return 0; |
1da177e4 LT |
393 | } |
394 | ||
b6ce4083 | 395 | static int acpi_battery_init_alarm(struct acpi_battery *battery) |
1da177e4 | 396 | { |
4be44fcd LB |
397 | acpi_status status = AE_OK; |
398 | acpi_handle handle = NULL; | |
4be44fcd | 399 | |
b6ce4083 | 400 | /* See if alarms are supported, and if so, set default */ |
f1d4661a AS |
401 | status = acpi_get_handle(battery->device->handle, "_BTP", &handle); |
402 | if (ACPI_FAILURE(status)) { | |
038fdea2 | 403 | battery->alarm_present = 0; |
f1d4661a | 404 | return 0; |
b6ce4083 | 405 | } |
f1d4661a AS |
406 | battery->alarm_present = 1; |
407 | if (!battery->alarm) | |
408 | battery->alarm = battery->design_capacity_warning; | |
aa650bbd | 409 | return acpi_battery_set_alarm(battery); |
b6ce4083 | 410 | } |
1da177e4 | 411 | |
97749cd9 | 412 | #ifdef CONFIG_ACPI_SYSFS_POWER |
508df92d AB |
413 | static ssize_t acpi_battery_alarm_show(struct device *dev, |
414 | struct device_attribute *attr, | |
415 | char *buf) | |
416 | { | |
417 | struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev)); | |
418 | return sprintf(buf, "%d\n", battery->alarm * 1000); | |
419 | } | |
420 | ||
421 | static ssize_t acpi_battery_alarm_store(struct device *dev, | |
422 | struct device_attribute *attr, | |
423 | const char *buf, size_t count) | |
424 | { | |
425 | unsigned long x; | |
426 | struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev)); | |
427 | if (sscanf(buf, "%ld\n", &x) == 1) | |
428 | battery->alarm = x/1000; | |
429 | if (acpi_battery_present(battery)) | |
430 | acpi_battery_set_alarm(battery); | |
431 | return count; | |
432 | } | |
433 | ||
434 | static struct device_attribute alarm_attr = { | |
435 | .attr = {.name = "alarm", .mode = 0644, .owner = THIS_MODULE}, | |
436 | .show = acpi_battery_alarm_show, | |
437 | .store = acpi_battery_alarm_store, | |
438 | }; | |
439 | ||
440 | static int sysfs_add_battery(struct acpi_battery *battery) | |
441 | { | |
442 | int result; | |
443 | ||
508df92d AB |
444 | if (battery->power_unit) { |
445 | battery->bat.properties = charge_battery_props; | |
446 | battery->bat.num_properties = | |
447 | ARRAY_SIZE(charge_battery_props); | |
448 | } else { | |
449 | battery->bat.properties = energy_battery_props; | |
450 | battery->bat.num_properties = | |
451 | ARRAY_SIZE(energy_battery_props); | |
452 | } | |
453 | ||
454 | battery->bat.name = acpi_device_bid(battery->device); | |
455 | battery->bat.type = POWER_SUPPLY_TYPE_BATTERY; | |
456 | battery->bat.get_property = acpi_battery_get_property; | |
457 | ||
458 | result = power_supply_register(&battery->device->dev, &battery->bat); | |
459 | if (result) | |
460 | return result; | |
461 | return device_create_file(battery->bat.dev, &alarm_attr); | |
462 | } | |
463 | ||
464 | static void sysfs_remove_battery(struct acpi_battery *battery) | |
465 | { | |
466 | if (!battery->bat.dev) | |
467 | return; | |
468 | device_remove_file(battery->bat.dev, &alarm_attr); | |
469 | power_supply_unregister(&battery->bat); | |
9104476e | 470 | battery->bat.dev = NULL; |
508df92d | 471 | } |
97749cd9 | 472 | #endif |
508df92d | 473 | |
f1d4661a | 474 | static int acpi_battery_update(struct acpi_battery *battery) |
b6ce4083 | 475 | { |
97749cd9 AS |
476 | int result; |
477 | result = acpi_battery_get_status(battery); | |
508df92d | 478 | if (result) |
b6ce4083 | 479 | return result; |
97749cd9 | 480 | #ifdef CONFIG_ACPI_SYSFS_POWER |
508df92d AB |
481 | if (!acpi_battery_present(battery)) { |
482 | sysfs_remove_battery(battery); | |
97749cd9 | 483 | battery->update_time = 0; |
508df92d | 484 | return 0; |
b6ce4083 | 485 | } |
97749cd9 AS |
486 | #endif |
487 | if (!battery->update_time) { | |
488 | result = acpi_battery_get_info(battery); | |
489 | if (result) | |
490 | return result; | |
491 | acpi_battery_init_alarm(battery); | |
492 | } | |
493 | #ifdef CONFIG_ACPI_SYSFS_POWER | |
508df92d AB |
494 | if (!battery->bat.dev) |
495 | sysfs_add_battery(battery); | |
97749cd9 | 496 | #endif |
f1d4661a | 497 | return acpi_battery_get_state(battery); |
4bd35cdb VL |
498 | } |
499 | ||
1da177e4 LT |
500 | /* -------------------------------------------------------------------------- |
501 | FS Interface (/proc) | |
502 | -------------------------------------------------------------------------- */ | |
503 | ||
fdcedbba | 504 | #ifdef CONFIG_ACPI_PROCFS_POWER |
4be44fcd | 505 | static struct proc_dir_entry *acpi_battery_dir; |
b6ce4083 | 506 | |
78490d82 | 507 | static int acpi_battery_print_info(struct seq_file *seq, int result) |
1da177e4 | 508 | { |
50dd0969 | 509 | struct acpi_battery *battery = seq->private; |
1da177e4 | 510 | |
b6ce4083 | 511 | if (result) |
1da177e4 LT |
512 | goto end; |
513 | ||
aa650bbd AS |
514 | seq_printf(seq, "present: %s\n", |
515 | acpi_battery_present(battery)?"yes":"no"); | |
516 | if (!acpi_battery_present(battery)) | |
1da177e4 | 517 | goto end; |
038fdea2 | 518 | if (battery->design_capacity == ACPI_BATTERY_VALUE_UNKNOWN) |
1da177e4 LT |
519 | seq_printf(seq, "design capacity: unknown\n"); |
520 | else | |
521 | seq_printf(seq, "design capacity: %d %sh\n", | |
aa650bbd AS |
522 | battery->design_capacity, |
523 | acpi_battery_units(battery)); | |
1da177e4 | 524 | |
d7380965 | 525 | if (battery->full_charge_capacity == ACPI_BATTERY_VALUE_UNKNOWN) |
1da177e4 LT |
526 | seq_printf(seq, "last full capacity: unknown\n"); |
527 | else | |
528 | seq_printf(seq, "last full capacity: %d %sh\n", | |
d7380965 | 529 | battery->full_charge_capacity, |
aa650bbd AS |
530 | acpi_battery_units(battery)); |
531 | ||
532 | seq_printf(seq, "battery technology: %srechargeable\n", | |
533 | (!battery->technology)?"non-":""); | |
1da177e4 | 534 | |
038fdea2 | 535 | if (battery->design_voltage == ACPI_BATTERY_VALUE_UNKNOWN) |
1da177e4 LT |
536 | seq_printf(seq, "design voltage: unknown\n"); |
537 | else | |
538 | seq_printf(seq, "design voltage: %d mV\n", | |
aa650bbd | 539 | battery->design_voltage); |
1da177e4 | 540 | seq_printf(seq, "design capacity warning: %d %sh\n", |
aa650bbd AS |
541 | battery->design_capacity_warning, |
542 | acpi_battery_units(battery)); | |
1da177e4 | 543 | seq_printf(seq, "design capacity low: %d %sh\n", |
aa650bbd AS |
544 | battery->design_capacity_low, |
545 | acpi_battery_units(battery)); | |
1da177e4 | 546 | seq_printf(seq, "capacity granularity 1: %d %sh\n", |
aa650bbd AS |
547 | battery->capacity_granularity_1, |
548 | acpi_battery_units(battery)); | |
1da177e4 | 549 | seq_printf(seq, "capacity granularity 2: %d %sh\n", |
aa650bbd AS |
550 | battery->capacity_granularity_2, |
551 | acpi_battery_units(battery)); | |
038fdea2 AS |
552 | seq_printf(seq, "model number: %s\n", battery->model_number); |
553 | seq_printf(seq, "serial number: %s\n", battery->serial_number); | |
554 | seq_printf(seq, "battery type: %s\n", battery->type); | |
555 | seq_printf(seq, "OEM info: %s\n", battery->oem_info); | |
4be44fcd | 556 | end: |
b6ce4083 VL |
557 | if (result) |
558 | seq_printf(seq, "ERROR: Unable to read battery info\n"); | |
b6ce4083 VL |
559 | return result; |
560 | } | |
561 | ||
78490d82 | 562 | static int acpi_battery_print_state(struct seq_file *seq, int result) |
1da177e4 | 563 | { |
50dd0969 | 564 | struct acpi_battery *battery = seq->private; |
1da177e4 | 565 | |
b6ce4083 | 566 | if (result) |
1da177e4 LT |
567 | goto end; |
568 | ||
aa650bbd AS |
569 | seq_printf(seq, "present: %s\n", |
570 | acpi_battery_present(battery)?"yes":"no"); | |
571 | if (!acpi_battery_present(battery)) | |
1da177e4 | 572 | goto end; |
b6ce4083 | 573 | |
aa650bbd AS |
574 | seq_printf(seq, "capacity state: %s\n", |
575 | (battery->state & 0x04)?"critical":"ok"); | |
576 | if ((battery->state & 0x01) && (battery->state & 0x02)) | |
4be44fcd LB |
577 | seq_printf(seq, |
578 | "charging state: charging/discharging\n"); | |
aa650bbd | 579 | else if (battery->state & 0x01) |
1da177e4 | 580 | seq_printf(seq, "charging state: discharging\n"); |
038fdea2 | 581 | else if (battery->state & 0x02) |
1da177e4 | 582 | seq_printf(seq, "charging state: charging\n"); |
aa650bbd | 583 | else |
1da177e4 | 584 | seq_printf(seq, "charging state: charged\n"); |
1da177e4 | 585 | |
d7380965 | 586 | if (battery->current_now == ACPI_BATTERY_VALUE_UNKNOWN) |
1da177e4 LT |
587 | seq_printf(seq, "present rate: unknown\n"); |
588 | else | |
589 | seq_printf(seq, "present rate: %d %s\n", | |
d7380965 | 590 | battery->current_now, acpi_battery_units(battery)); |
1da177e4 | 591 | |
d7380965 | 592 | if (battery->capacity_now == ACPI_BATTERY_VALUE_UNKNOWN) |
1da177e4 LT |
593 | seq_printf(seq, "remaining capacity: unknown\n"); |
594 | else | |
595 | seq_printf(seq, "remaining capacity: %d %sh\n", | |
d7380965 AS |
596 | battery->capacity_now, acpi_battery_units(battery)); |
597 | if (battery->voltage_now == ACPI_BATTERY_VALUE_UNKNOWN) | |
1da177e4 LT |
598 | seq_printf(seq, "present voltage: unknown\n"); |
599 | else | |
600 | seq_printf(seq, "present voltage: %d mV\n", | |
d7380965 | 601 | battery->voltage_now); |
4be44fcd | 602 | end: |
aa650bbd | 603 | if (result) |
b6ce4083 | 604 | seq_printf(seq, "ERROR: Unable to read battery state\n"); |
b6ce4083 VL |
605 | |
606 | return result; | |
607 | } | |
608 | ||
78490d82 | 609 | static int acpi_battery_print_alarm(struct seq_file *seq, int result) |
1da177e4 | 610 | { |
50dd0969 | 611 | struct acpi_battery *battery = seq->private; |
1da177e4 | 612 | |
b6ce4083 | 613 | if (result) |
1da177e4 LT |
614 | goto end; |
615 | ||
b6ce4083 | 616 | if (!acpi_battery_present(battery)) { |
1da177e4 LT |
617 | seq_printf(seq, "present: no\n"); |
618 | goto end; | |
619 | } | |
1da177e4 LT |
620 | seq_printf(seq, "alarm: "); |
621 | if (!battery->alarm) | |
622 | seq_printf(seq, "unsupported\n"); | |
623 | else | |
aa650bbd AS |
624 | seq_printf(seq, "%u %sh\n", battery->alarm, |
625 | acpi_battery_units(battery)); | |
4be44fcd | 626 | end: |
b6ce4083 VL |
627 | if (result) |
628 | seq_printf(seq, "ERROR: Unable to read battery alarm\n"); | |
b6ce4083 VL |
629 | return result; |
630 | } | |
631 | ||
f1d4661a AS |
632 | static ssize_t acpi_battery_write_alarm(struct file *file, |
633 | const char __user * buffer, | |
634 | size_t count, loff_t * ppos) | |
1da177e4 | 635 | { |
4be44fcd LB |
636 | int result = 0; |
637 | char alarm_string[12] = { '\0' }; | |
50dd0969 JE |
638 | struct seq_file *m = file->private_data; |
639 | struct acpi_battery *battery = m->private; | |
1da177e4 | 640 | |
1da177e4 | 641 | if (!battery || (count > sizeof(alarm_string) - 1)) |
d550d98d | 642 | return -EINVAL; |
b6ce4083 VL |
643 | if (!acpi_battery_present(battery)) { |
644 | result = -ENODEV; | |
645 | goto end; | |
646 | } | |
b6ce4083 VL |
647 | if (copy_from_user(alarm_string, buffer, count)) { |
648 | result = -EFAULT; | |
649 | goto end; | |
650 | } | |
1da177e4 | 651 | alarm_string[count] = '\0'; |
f1d4661a | 652 | battery->alarm = simple_strtol(alarm_string, NULL, 0); |
aa650bbd | 653 | result = acpi_battery_set_alarm(battery); |
b6ce4083 | 654 | end: |
b6ce4083 | 655 | if (!result) |
f1d4661a | 656 | return count; |
78490d82 AS |
657 | return result; |
658 | } | |
659 | ||
660 | typedef int(*print_func)(struct seq_file *seq, int result); | |
aa650bbd AS |
661 | |
662 | static print_func acpi_print_funcs[ACPI_BATTERY_NUMFILES] = { | |
663 | acpi_battery_print_info, | |
664 | acpi_battery_print_state, | |
665 | acpi_battery_print_alarm, | |
78490d82 | 666 | }; |
b6ce4083 | 667 | |
78490d82 AS |
668 | static int acpi_battery_read(int fid, struct seq_file *seq) |
669 | { | |
670 | struct acpi_battery *battery = seq->private; | |
f1d4661a | 671 | int result = acpi_battery_update(battery); |
aa650bbd | 672 | return acpi_print_funcs[fid](seq, result); |
78490d82 AS |
673 | } |
674 | ||
aa650bbd AS |
675 | #define DECLARE_FILE_FUNCTIONS(_name) \ |
676 | static int acpi_battery_read_##_name(struct seq_file *seq, void *offset) \ | |
677 | { \ | |
678 | return acpi_battery_read(_name##_tag, seq); \ | |
679 | } \ | |
680 | static int acpi_battery_##_name##_open_fs(struct inode *inode, struct file *file) \ | |
681 | { \ | |
682 | return single_open(file, acpi_battery_read_##_name, PDE(inode)->data); \ | |
78490d82 AS |
683 | } |
684 | ||
aa650bbd AS |
685 | DECLARE_FILE_FUNCTIONS(info); |
686 | DECLARE_FILE_FUNCTIONS(state); | |
687 | DECLARE_FILE_FUNCTIONS(alarm); | |
688 | ||
689 | #undef DECLARE_FILE_FUNCTIONS | |
690 | ||
691 | #define FILE_DESCRIPTION_RO(_name) \ | |
692 | { \ | |
693 | .name = __stringify(_name), \ | |
694 | .mode = S_IRUGO, \ | |
695 | .ops = { \ | |
696 | .open = acpi_battery_##_name##_open_fs, \ | |
697 | .read = seq_read, \ | |
698 | .llseek = seq_lseek, \ | |
699 | .release = single_release, \ | |
700 | .owner = THIS_MODULE, \ | |
701 | }, \ | |
702 | } | |
78490d82 | 703 | |
aa650bbd AS |
704 | #define FILE_DESCRIPTION_RW(_name) \ |
705 | { \ | |
706 | .name = __stringify(_name), \ | |
707 | .mode = S_IFREG | S_IRUGO | S_IWUSR, \ | |
708 | .ops = { \ | |
709 | .open = acpi_battery_##_name##_open_fs, \ | |
710 | .read = seq_read, \ | |
711 | .llseek = seq_lseek, \ | |
712 | .write = acpi_battery_write_##_name, \ | |
713 | .release = single_release, \ | |
714 | .owner = THIS_MODULE, \ | |
715 | }, \ | |
716 | } | |
1da177e4 | 717 | |
78490d82 AS |
718 | static struct battery_file { |
719 | struct file_operations ops; | |
720 | mode_t mode; | |
721 | char *name; | |
722 | } acpi_battery_file[] = { | |
aa650bbd AS |
723 | FILE_DESCRIPTION_RO(info), |
724 | FILE_DESCRIPTION_RO(state), | |
725 | FILE_DESCRIPTION_RW(alarm), | |
1da177e4 LT |
726 | }; |
727 | ||
aa650bbd AS |
728 | #undef FILE_DESCRIPTION_RO |
729 | #undef FILE_DESCRIPTION_RW | |
730 | ||
4be44fcd | 731 | static int acpi_battery_add_fs(struct acpi_device *device) |
1da177e4 | 732 | { |
4be44fcd | 733 | struct proc_dir_entry *entry = NULL; |
78490d82 | 734 | int i; |
1da177e4 | 735 | |
1da177e4 LT |
736 | if (!acpi_device_dir(device)) { |
737 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 738 | acpi_battery_dir); |
1da177e4 | 739 | if (!acpi_device_dir(device)) |
d550d98d | 740 | return -ENODEV; |
1da177e4 LT |
741 | acpi_device_dir(device)->owner = THIS_MODULE; |
742 | } | |
743 | ||
78490d82 AS |
744 | for (i = 0; i < ACPI_BATTERY_NUMFILES; ++i) { |
745 | entry = create_proc_entry(acpi_battery_file[i].name, | |
746 | acpi_battery_file[i].mode, acpi_device_dir(device)); | |
747 | if (!entry) | |
748 | return -ENODEV; | |
749 | else { | |
750 | entry->proc_fops = &acpi_battery_file[i].ops; | |
751 | entry->data = acpi_driver_data(device); | |
752 | entry->owner = THIS_MODULE; | |
753 | } | |
1da177e4 | 754 | } |
d550d98d | 755 | return 0; |
1da177e4 LT |
756 | } |
757 | ||
aa650bbd | 758 | static void acpi_battery_remove_fs(struct acpi_device *device) |
1da177e4 | 759 | { |
78490d82 | 760 | int i; |
aa650bbd AS |
761 | if (!acpi_device_dir(device)) |
762 | return; | |
763 | for (i = 0; i < ACPI_BATTERY_NUMFILES; ++i) | |
764 | remove_proc_entry(acpi_battery_file[i].name, | |
1da177e4 | 765 | acpi_device_dir(device)); |
1da177e4 | 766 | |
aa650bbd AS |
767 | remove_proc_entry(acpi_device_bid(device), acpi_battery_dir); |
768 | acpi_device_dir(device) = NULL; | |
1da177e4 LT |
769 | } |
770 | ||
d7380965 | 771 | #endif |
3e58ea0d | 772 | |
1da177e4 LT |
773 | /* -------------------------------------------------------------------------- |
774 | Driver Interface | |
775 | -------------------------------------------------------------------------- */ | |
776 | ||
4be44fcd | 777 | static void acpi_battery_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 778 | { |
50dd0969 | 779 | struct acpi_battery *battery = data; |
f1d4661a | 780 | struct acpi_device *device; |
1da177e4 | 781 | if (!battery) |
d550d98d | 782 | return; |
145def84 | 783 | device = battery->device; |
f1d4661a AS |
784 | acpi_battery_update(battery); |
785 | acpi_bus_generate_proc_event(device, event, | |
786 | acpi_battery_present(battery)); | |
787 | acpi_bus_generate_netlink_event(device->pnp.device_class, | |
788 | device->dev.bus_id, event, | |
9ea7d575 | 789 | acpi_battery_present(battery)); |
97749cd9 | 790 | #ifdef CONFIG_ACPI_SYSFS_POWER |
508df92d AB |
791 | /* acpi_batter_update could remove power_supply object */ |
792 | if (battery->bat.dev) | |
793 | kobject_uevent(&battery->bat.dev->kobj, KOBJ_CHANGE); | |
97749cd9 | 794 | #endif |
1da177e4 LT |
795 | } |
796 | ||
4be44fcd | 797 | static int acpi_battery_add(struct acpi_device *device) |
1da177e4 | 798 | { |
4be44fcd LB |
799 | int result = 0; |
800 | acpi_status status = 0; | |
801 | struct acpi_battery *battery = NULL; | |
1da177e4 | 802 | if (!device) |
d550d98d | 803 | return -EINVAL; |
36bcbec7 | 804 | battery = kzalloc(sizeof(struct acpi_battery), GFP_KERNEL); |
1da177e4 | 805 | if (!battery) |
d550d98d | 806 | return -ENOMEM; |
145def84 | 807 | battery->device = device; |
1da177e4 LT |
808 | strcpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME); |
809 | strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS); | |
810 | acpi_driver_data(device) = battery; | |
038fdea2 | 811 | mutex_init(&battery->lock); |
f1d4661a | 812 | acpi_battery_update(battery); |
fdcedbba | 813 | #ifdef CONFIG_ACPI_PROCFS_POWER |
1da177e4 LT |
814 | result = acpi_battery_add_fs(device); |
815 | if (result) | |
816 | goto end; | |
d7380965 | 817 | #endif |
3b073ec3 | 818 | status = acpi_install_notify_handler(device->handle, |
9fdae727 | 819 | ACPI_ALL_NOTIFY, |
4be44fcd | 820 | acpi_battery_notify, battery); |
1da177e4 | 821 | if (ACPI_FAILURE(status)) { |
b6ce4083 | 822 | ACPI_EXCEPTION((AE_INFO, status, "Installing notify handler")); |
1da177e4 LT |
823 | result = -ENODEV; |
824 | goto end; | |
825 | } | |
1da177e4 | 826 | printk(KERN_INFO PREFIX "%s Slot [%s] (battery %s)\n", |
4be44fcd LB |
827 | ACPI_BATTERY_DEVICE_NAME, acpi_device_bid(device), |
828 | device->status.battery_present ? "present" : "absent"); | |
4be44fcd | 829 | end: |
1da177e4 | 830 | if (result) { |
fdcedbba | 831 | #ifdef CONFIG_ACPI_PROCFS_POWER |
1da177e4 | 832 | acpi_battery_remove_fs(device); |
d7380965 | 833 | #endif |
1da177e4 LT |
834 | kfree(battery); |
835 | } | |
d550d98d | 836 | return result; |
1da177e4 LT |
837 | } |
838 | ||
4be44fcd | 839 | static int acpi_battery_remove(struct acpi_device *device, int type) |
1da177e4 | 840 | { |
4be44fcd LB |
841 | acpi_status status = 0; |
842 | struct acpi_battery *battery = NULL; | |
1da177e4 | 843 | |
1da177e4 | 844 | if (!device || !acpi_driver_data(device)) |
d550d98d | 845 | return -EINVAL; |
50dd0969 | 846 | battery = acpi_driver_data(device); |
3b073ec3 | 847 | status = acpi_remove_notify_handler(device->handle, |
9fdae727 | 848 | ACPI_ALL_NOTIFY, |
4be44fcd | 849 | acpi_battery_notify); |
fdcedbba | 850 | #ifdef CONFIG_ACPI_PROCFS_POWER |
1da177e4 | 851 | acpi_battery_remove_fs(device); |
d7380965 | 852 | #endif |
97749cd9 | 853 | #ifdef CONFIG_ACPI_SYSFS_POWER |
508df92d | 854 | sysfs_remove_battery(battery); |
97749cd9 | 855 | #endif |
038fdea2 | 856 | mutex_destroy(&battery->lock); |
1da177e4 | 857 | kfree(battery); |
d550d98d | 858 | return 0; |
1da177e4 LT |
859 | } |
860 | ||
34c4415a | 861 | /* this is needed to learn about changes made in suspended state */ |
5d9464a4 | 862 | static int acpi_battery_resume(struct acpi_device *device) |
34c4415a JK |
863 | { |
864 | struct acpi_battery *battery; | |
34c4415a JK |
865 | if (!device) |
866 | return -EINVAL; | |
f1d4661a AS |
867 | battery = acpi_driver_data(device); |
868 | battery->update_time = 0; | |
508df92d | 869 | acpi_battery_update(battery); |
b6ce4083 | 870 | return 0; |
34c4415a JK |
871 | } |
872 | ||
aa650bbd AS |
873 | static struct acpi_driver acpi_battery_driver = { |
874 | .name = "battery", | |
875 | .class = ACPI_BATTERY_CLASS, | |
876 | .ids = battery_device_ids, | |
877 | .ops = { | |
878 | .add = acpi_battery_add, | |
879 | .resume = acpi_battery_resume, | |
880 | .remove = acpi_battery_remove, | |
881 | }, | |
882 | }; | |
883 | ||
4be44fcd | 884 | static int __init acpi_battery_init(void) |
1da177e4 | 885 | { |
4d8316d5 PM |
886 | if (acpi_disabled) |
887 | return -ENODEV; | |
fdcedbba | 888 | #ifdef CONFIG_ACPI_PROCFS_POWER |
3f86b832 | 889 | acpi_battery_dir = acpi_lock_battery_dir(); |
1da177e4 | 890 | if (!acpi_battery_dir) |
d550d98d | 891 | return -ENODEV; |
d7380965 | 892 | #endif |
aa650bbd | 893 | if (acpi_bus_register_driver(&acpi_battery_driver) < 0) { |
fdcedbba | 894 | #ifdef CONFIG_ACPI_PROCFS_POWER |
3f86b832 | 895 | acpi_unlock_battery_dir(acpi_battery_dir); |
d7380965 | 896 | #endif |
d550d98d | 897 | return -ENODEV; |
1da177e4 | 898 | } |
d550d98d | 899 | return 0; |
1da177e4 LT |
900 | } |
901 | ||
4be44fcd | 902 | static void __exit acpi_battery_exit(void) |
1da177e4 | 903 | { |
1da177e4 | 904 | acpi_bus_unregister_driver(&acpi_battery_driver); |
fdcedbba | 905 | #ifdef CONFIG_ACPI_PROCFS_POWER |
3f86b832 | 906 | acpi_unlock_battery_dir(acpi_battery_dir); |
d7380965 | 907 | #endif |
1da177e4 LT |
908 | } |
909 | ||
1da177e4 LT |
910 | module_init(acpi_battery_init); |
911 | module_exit(acpi_battery_exit); |