Commit | Line | Data |
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3f86b832 | 1 | /* |
db1c291a | 2 | * sbs.c - ACPI Smart Battery System Driver ($Revision: 2.0 $) |
3f86b832 | 3 | * |
db1c291a AS |
4 | * Copyright (c) 2007 Alexey Starikovskiy <astarikovskiy@suse.de> |
5 | * Copyright (c) 2005-2007 Vladimir Lebedev <vladimir.p.lebedev@intel.com> | |
3f86b832 RT |
6 | * Copyright (c) 2005 Rich Townsend <rhdt@bartol.udel.edu> |
7 | * | |
8 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or (at | |
13 | * your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License along | |
21 | * with this program; if not, write to the Free Software Foundation, Inc., | |
22 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
23 | * | |
24 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
25 | */ | |
26 | ||
27 | #include <linux/init.h> | |
28 | #include <linux/module.h> | |
29 | #include <linux/moduleparam.h> | |
30 | #include <linux/kernel.h> | |
94f6c086 | 31 | |
3f86b832 RT |
32 | #include <linux/proc_fs.h> |
33 | #include <linux/seq_file.h> | |
34 | #include <asm/uaccess.h> | |
94f6c086 | 35 | |
3f86b832 | 36 | #include <linux/acpi.h> |
6d15702c | 37 | #include <linux/timer.h> |
72206233 | 38 | #include <linux/jiffies.h> |
3f86b832 RT |
39 | #include <linux/delay.h> |
40 | ||
94f6c086 AS |
41 | #include <linux/power_supply.h> |
42 | ||
91087dfa AS |
43 | #include "sbshc.h" |
44 | ||
3f86b832 RT |
45 | #define ACPI_SBS_CLASS "sbs" |
46 | #define ACPI_AC_CLASS "ac_adapter" | |
47 | #define ACPI_BATTERY_CLASS "battery" | |
3f86b832 RT |
48 | #define ACPI_SBS_DEVICE_NAME "Smart Battery System" |
49 | #define ACPI_SBS_FILE_INFO "info" | |
50 | #define ACPI_SBS_FILE_STATE "state" | |
51 | #define ACPI_SBS_FILE_ALARM "alarm" | |
52 | #define ACPI_BATTERY_DIR_NAME "BAT%i" | |
53 | #define ACPI_AC_DIR_NAME "AC0" | |
3f86b832 | 54 | |
db1c291a AS |
55 | enum acpi_sbs_device_addr { |
56 | ACPI_SBS_CHARGER = 0x9, | |
57 | ACPI_SBS_MANAGER = 0xa, | |
58 | ACPI_SBS_BATTERY = 0xb, | |
59 | }; | |
60 | ||
61 | #define ACPI_SBS_NOTIFY_STATUS 0x80 | |
62 | #define ACPI_SBS_NOTIFY_INFO 0x81 | |
3f86b832 | 63 | |
db1c291a | 64 | MODULE_AUTHOR("Alexey Starikovskiy <astarikovskiy@suse.de>"); |
3f86b832 RT |
65 | MODULE_DESCRIPTION("Smart Battery System ACPI interface driver"); |
66 | MODULE_LICENSE("GPL"); | |
67 | ||
db1c291a AS |
68 | static unsigned int cache_time = 1000; |
69 | module_param(cache_time, uint, 0644); | |
70 | MODULE_PARM_DESC(cache_time, "cache time in milliseconds"); | |
6d15702c VL |
71 | |
72 | extern struct proc_dir_entry *acpi_lock_ac_dir(void); | |
73 | extern struct proc_dir_entry *acpi_lock_battery_dir(void); | |
74 | extern void acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir); | |
75 | extern void acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir); | |
76 | ||
db1c291a | 77 | #define MAX_SBS_BAT 4 |
6d15702c VL |
78 | #define ACPI_SBS_BLOCK_MAX 32 |
79 | ||
1ba90e3a | 80 | static const struct acpi_device_id sbs_device_ids[] = { |
91087dfa | 81 | {"ACPI0002", 0}, |
1ba90e3a TR |
82 | {"", 0}, |
83 | }; | |
84 | MODULE_DEVICE_TABLE(acpi, sbs_device_ids); | |
85 | ||
3f86b832 | 86 | struct acpi_battery { |
94f6c086 | 87 | struct power_supply bat; |
3f86b832 | 88 | struct acpi_sbs *sbs; |
89862e3b | 89 | struct proc_dir_entry *proc_entry; |
db1c291a AS |
90 | unsigned long update_time; |
91 | char name[8]; | |
89862e3b AS |
92 | char manufacturer_name[ACPI_SBS_BLOCK_MAX]; |
93 | char device_name[ACPI_SBS_BLOCK_MAX]; | |
94 | char device_chemistry[ACPI_SBS_BLOCK_MAX]; | |
94f6c086 | 95 | u16 alarm_capacity; |
89862e3b AS |
96 | u16 full_charge_capacity; |
97 | u16 design_capacity; | |
98 | u16 design_voltage; | |
99 | u16 serial_number; | |
db1c291a AS |
100 | u16 cycle_count; |
101 | u16 temp_now; | |
89862e3b AS |
102 | u16 voltage_now; |
103 | s16 current_now; | |
db1c291a | 104 | s16 current_avg; |
89862e3b | 105 | u16 capacity_now; |
db1c291a | 106 | u16 state_of_charge; |
89862e3b | 107 | u16 state; |
89862e3b | 108 | u16 mode; |
db1c291a | 109 | u16 spec; |
89862e3b | 110 | u8 id; |
89862e3b | 111 | u8 present:1; |
3f86b832 RT |
112 | }; |
113 | ||
94f6c086 AS |
114 | #define to_acpi_battery(x) container_of(x, struct acpi_battery, bat); |
115 | ||
3f86b832 | 116 | struct acpi_sbs { |
94f6c086 | 117 | struct power_supply charger; |
3f86b832 | 118 | struct acpi_device *device; |
91087dfa | 119 | struct acpi_smb_hc *hc; |
db1c291a AS |
120 | struct mutex lock; |
121 | struct proc_dir_entry *charger_entry; | |
3f86b832 | 122 | struct acpi_battery battery[MAX_SBS_BAT]; |
db1c291a | 123 | u8 batteries_supported:4; |
89862e3b AS |
124 | u8 manager_present:1; |
125 | u8 charger_present:1; | |
3f86b832 RT |
126 | }; |
127 | ||
94f6c086 AS |
128 | #define to_acpi_sbs(x) container_of(x, struct acpi_sbs, charger) |
129 | ||
db1c291a | 130 | static inline int battery_scale(int log) |
72206233 | 131 | { |
db1c291a AS |
132 | int scale = 1; |
133 | while (log--) | |
134 | scale *= 10; | |
135 | return scale; | |
72206233 VL |
136 | } |
137 | ||
db1c291a | 138 | static inline int acpi_battery_vscale(struct acpi_battery *battery) |
72206233 | 139 | { |
db1c291a | 140 | return battery_scale((battery->spec & 0x0f00) >> 8); |
72206233 VL |
141 | } |
142 | ||
db1c291a | 143 | static inline int acpi_battery_ipscale(struct acpi_battery *battery) |
72206233 | 144 | { |
db1c291a | 145 | return battery_scale((battery->spec & 0xf000) >> 12); |
72206233 VL |
146 | } |
147 | ||
db1c291a | 148 | static inline int acpi_battery_mode(struct acpi_battery *battery) |
72206233 | 149 | { |
db1c291a | 150 | return (battery->mode & 0x8000); |
72206233 | 151 | } |
3f86b832 | 152 | |
db1c291a | 153 | static inline int acpi_battery_scale(struct acpi_battery *battery) |
3f86b832 | 154 | { |
db1c291a AS |
155 | return (acpi_battery_mode(battery) ? 10 : 1) * |
156 | acpi_battery_ipscale(battery); | |
3f86b832 RT |
157 | } |
158 | ||
94f6c086 AS |
159 | static int sbs_get_ac_property(struct power_supply *psy, |
160 | enum power_supply_property psp, | |
161 | union power_supply_propval *val) | |
162 | { | |
163 | struct acpi_sbs *sbs = to_acpi_sbs(psy); | |
164 | switch (psp) { | |
165 | case POWER_SUPPLY_PROP_ONLINE: | |
166 | val->intval = sbs->charger_present; | |
167 | break; | |
168 | default: | |
169 | return -EINVAL; | |
170 | } | |
171 | return 0; | |
172 | } | |
173 | ||
174 | static int acpi_battery_technology(struct acpi_battery *battery) | |
175 | { | |
176 | if (!strcasecmp("NiCd", battery->device_chemistry)) | |
177 | return POWER_SUPPLY_TECHNOLOGY_NiCd; | |
178 | if (!strcasecmp("NiMH", battery->device_chemistry)) | |
179 | return POWER_SUPPLY_TECHNOLOGY_NiMH; | |
180 | if (!strcasecmp("LION", battery->device_chemistry)) | |
181 | return POWER_SUPPLY_TECHNOLOGY_LION; | |
182 | if (!strcasecmp("LiP", battery->device_chemistry)) | |
183 | return POWER_SUPPLY_TECHNOLOGY_LIPO; | |
184 | return POWER_SUPPLY_TECHNOLOGY_UNKNOWN; | |
185 | } | |
186 | ||
187 | static int acpi_sbs_battery_get_property(struct power_supply *psy, | |
188 | enum power_supply_property psp, | |
189 | union power_supply_propval *val) | |
190 | { | |
191 | struct acpi_battery *battery = to_acpi_battery(psy); | |
192 | ||
193 | if ((!battery->present) && psp != POWER_SUPPLY_PROP_PRESENT) | |
194 | return -ENODEV; | |
195 | switch (psp) { | |
196 | case POWER_SUPPLY_PROP_STATUS: | |
197 | if (battery->current_now < 0) | |
198 | val->intval = POWER_SUPPLY_STATUS_DISCHARGING; | |
199 | else if (battery->current_now > 0) | |
200 | val->intval = POWER_SUPPLY_STATUS_CHARGING; | |
201 | else | |
202 | val->intval = POWER_SUPPLY_STATUS_FULL; | |
203 | break; | |
204 | case POWER_SUPPLY_PROP_PRESENT: | |
205 | val->intval = battery->present; | |
206 | break; | |
207 | case POWER_SUPPLY_PROP_TECHNOLOGY: | |
208 | val->intval = acpi_battery_technology(battery); | |
209 | break; | |
210 | case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: | |
211 | val->intval = battery->design_voltage * | |
212 | acpi_battery_vscale(battery) * 1000; | |
213 | break; | |
214 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
215 | val->intval = battery->voltage_now * | |
216 | acpi_battery_vscale(battery) * 1000; | |
217 | break; | |
218 | case POWER_SUPPLY_PROP_CURRENT_NOW: | |
219 | val->intval = abs(battery->current_now) * | |
220 | acpi_battery_ipscale(battery) * 1000; | |
221 | break; | |
222 | case POWER_SUPPLY_PROP_CURRENT_AVG: | |
223 | val->intval = abs(battery->current_avg) * | |
224 | acpi_battery_ipscale(battery) * 1000; | |
225 | break; | |
226 | case POWER_SUPPLY_PROP_CAPACITY: | |
227 | val->intval = battery->state_of_charge; | |
228 | break; | |
229 | case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: | |
230 | case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: | |
231 | val->intval = battery->design_capacity * | |
232 | acpi_battery_scale(battery) * 1000; | |
233 | break; | |
234 | case POWER_SUPPLY_PROP_CHARGE_FULL: | |
235 | case POWER_SUPPLY_PROP_ENERGY_FULL: | |
236 | val->intval = battery->full_charge_capacity * | |
237 | acpi_battery_scale(battery) * 1000; | |
238 | break; | |
239 | case POWER_SUPPLY_PROP_CHARGE_NOW: | |
240 | case POWER_SUPPLY_PROP_ENERGY_NOW: | |
241 | val->intval = battery->capacity_now * | |
242 | acpi_battery_scale(battery) * 1000; | |
243 | break; | |
244 | case POWER_SUPPLY_PROP_TEMP: | |
245 | val->intval = battery->temp_now - 2730; // dK -> dC | |
246 | break; | |
247 | case POWER_SUPPLY_PROP_MODEL_NAME: | |
248 | val->strval = battery->device_name; | |
249 | break; | |
250 | case POWER_SUPPLY_PROP_MANUFACTURER: | |
251 | val->strval = battery->manufacturer_name; | |
252 | break; | |
253 | default: | |
254 | return -EINVAL; | |
255 | } | |
256 | return 0; | |
257 | } | |
258 | ||
259 | static enum power_supply_property sbs_ac_props[] = { | |
260 | POWER_SUPPLY_PROP_ONLINE, | |
261 | }; | |
262 | ||
263 | static enum power_supply_property sbs_charge_battery_props[] = { | |
264 | POWER_SUPPLY_PROP_STATUS, | |
265 | POWER_SUPPLY_PROP_PRESENT, | |
266 | POWER_SUPPLY_PROP_TECHNOLOGY, | |
267 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, | |
268 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
269 | POWER_SUPPLY_PROP_CURRENT_NOW, | |
270 | POWER_SUPPLY_PROP_CURRENT_AVG, | |
271 | POWER_SUPPLY_PROP_CAPACITY, | |
272 | POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, | |
273 | POWER_SUPPLY_PROP_CHARGE_FULL, | |
274 | POWER_SUPPLY_PROP_CHARGE_NOW, | |
275 | POWER_SUPPLY_PROP_TEMP, | |
276 | POWER_SUPPLY_PROP_MODEL_NAME, | |
277 | POWER_SUPPLY_PROP_MANUFACTURER, | |
278 | }; | |
279 | ||
280 | static enum power_supply_property sbs_energy_battery_props[] = { | |
281 | POWER_SUPPLY_PROP_STATUS, | |
282 | POWER_SUPPLY_PROP_PRESENT, | |
283 | POWER_SUPPLY_PROP_TECHNOLOGY, | |
284 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, | |
285 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
286 | POWER_SUPPLY_PROP_CURRENT_NOW, | |
287 | POWER_SUPPLY_PROP_CURRENT_AVG, | |
288 | POWER_SUPPLY_PROP_CAPACITY, | |
289 | POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, | |
290 | POWER_SUPPLY_PROP_ENERGY_FULL, | |
291 | POWER_SUPPLY_PROP_ENERGY_NOW, | |
292 | POWER_SUPPLY_PROP_TEMP, | |
293 | POWER_SUPPLY_PROP_MODEL_NAME, | |
294 | POWER_SUPPLY_PROP_MANUFACTURER, | |
295 | }; | |
296 | ||
db1c291a AS |
297 | /* -------------------------------------------------------------------------- |
298 | Smart Battery System Management | |
299 | -------------------------------------------------------------------------- */ | |
3f86b832 | 300 | |
db1c291a AS |
301 | struct acpi_battery_reader { |
302 | u8 command; /* command for battery */ | |
303 | u8 mode; /* word or block? */ | |
304 | size_t offset; /* offset inside struct acpi_sbs_battery */ | |
305 | }; | |
3f86b832 | 306 | |
db1c291a AS |
307 | static struct acpi_battery_reader info_readers[] = { |
308 | {0x01, SMBUS_READ_WORD, offsetof(struct acpi_battery, alarm_capacity)}, | |
309 | {0x03, SMBUS_READ_WORD, offsetof(struct acpi_battery, mode)}, | |
310 | {0x10, SMBUS_READ_WORD, offsetof(struct acpi_battery, full_charge_capacity)}, | |
311 | {0x17, SMBUS_READ_WORD, offsetof(struct acpi_battery, cycle_count)}, | |
312 | {0x18, SMBUS_READ_WORD, offsetof(struct acpi_battery, design_capacity)}, | |
313 | {0x19, SMBUS_READ_WORD, offsetof(struct acpi_battery, design_voltage)}, | |
314 | {0x1a, SMBUS_READ_WORD, offsetof(struct acpi_battery, spec)}, | |
315 | {0x1c, SMBUS_READ_WORD, offsetof(struct acpi_battery, serial_number)}, | |
316 | {0x20, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, manufacturer_name)}, | |
317 | {0x21, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, device_name)}, | |
318 | {0x22, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, device_chemistry)}, | |
319 | }; | |
3f86b832 | 320 | |
db1c291a AS |
321 | static struct acpi_battery_reader state_readers[] = { |
322 | {0x08, SMBUS_READ_WORD, offsetof(struct acpi_battery, temp_now)}, | |
323 | {0x09, SMBUS_READ_WORD, offsetof(struct acpi_battery, voltage_now)}, | |
324 | {0x0a, SMBUS_READ_WORD, offsetof(struct acpi_battery, current_now)}, | |
325 | {0x0b, SMBUS_READ_WORD, offsetof(struct acpi_battery, current_avg)}, | |
326 | {0x0f, SMBUS_READ_WORD, offsetof(struct acpi_battery, capacity_now)}, | |
327 | {0x0e, SMBUS_READ_WORD, offsetof(struct acpi_battery, state_of_charge)}, | |
328 | {0x16, SMBUS_READ_WORD, offsetof(struct acpi_battery, state)}, | |
329 | }; | |
3f86b832 | 330 | |
db1c291a | 331 | static int acpi_manager_get_info(struct acpi_sbs *sbs) |
3f86b832 | 332 | { |
3f86b832 | 333 | int result = 0; |
db1c291a | 334 | u16 battery_system_info; |
3f86b832 | 335 | |
db1c291a | 336 | result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER, |
94f6c086 | 337 | 0x04, (u8 *)&battery_system_info); |
db1c291a AS |
338 | if (!result) |
339 | sbs->batteries_supported = battery_system_info & 0x000f; | |
635227ee | 340 | return result; |
3f86b832 RT |
341 | } |
342 | ||
343 | static int acpi_battery_get_info(struct acpi_battery *battery) | |
344 | { | |
db1c291a | 345 | int i, result = 0; |
3f86b832 | 346 | |
db1c291a | 347 | for (i = 0; i < ARRAY_SIZE(info_readers); ++i) { |
94f6c086 AS |
348 | result = acpi_smbus_read(battery->sbs->hc, |
349 | info_readers[i].mode, | |
350 | ACPI_SBS_BATTERY, | |
351 | info_readers[i].command, | |
352 | (u8 *) battery + | |
353 | info_readers[i].offset); | |
db1c291a AS |
354 | if (result) |
355 | break; | |
3f86b832 | 356 | } |
635227ee | 357 | return result; |
3f86b832 RT |
358 | } |
359 | ||
3f86b832 RT |
360 | static int acpi_battery_get_state(struct acpi_battery *battery) |
361 | { | |
db1c291a | 362 | int i, result = 0; |
3f86b832 | 363 | |
94f6c086 AS |
364 | if (battery->update_time && |
365 | time_before(jiffies, battery->update_time + | |
db1c291a AS |
366 | msecs_to_jiffies(cache_time))) |
367 | return 0; | |
368 | for (i = 0; i < ARRAY_SIZE(state_readers); ++i) { | |
369 | result = acpi_smbus_read(battery->sbs->hc, | |
370 | state_readers[i].mode, | |
371 | ACPI_SBS_BATTERY, | |
372 | state_readers[i].command, | |
373 | (u8 *)battery + | |
374 | state_readers[i].offset); | |
375 | if (result) | |
3f86b832 | 376 | goto end; |
3f86b832 | 377 | } |
3f86b832 | 378 | end: |
db1c291a | 379 | battery->update_time = jiffies; |
635227ee | 380 | return result; |
3f86b832 RT |
381 | } |
382 | ||
db1c291a | 383 | static int acpi_battery_get_alarm(struct acpi_battery *battery) |
3f86b832 | 384 | { |
db1c291a AS |
385 | return acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, |
386 | ACPI_SBS_BATTERY, 0x01, | |
94f6c086 | 387 | (u8 *)&battery->alarm_capacity); |
3f86b832 RT |
388 | } |
389 | ||
db1c291a | 390 | static int acpi_battery_set_alarm(struct acpi_battery *battery) |
3f86b832 | 391 | { |
db1c291a | 392 | struct acpi_sbs *sbs = battery->sbs; |
94f6c086 AS |
393 | u16 value, sel = 1 << (battery->id + 12); |
394 | ||
395 | int ret; | |
396 | ||
3f86b832 | 397 | |
db1c291a | 398 | if (sbs->manager_present) { |
94f6c086 | 399 | ret = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER, |
db1c291a | 400 | 0x01, (u8 *)&value); |
94f6c086 AS |
401 | if (ret) |
402 | goto end; | |
403 | if ((value & 0xf000) != sel) { | |
404 | value &= 0x0fff; | |
405 | value |= sel; | |
406 | ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, | |
407 | ACPI_SBS_MANAGER, | |
408 | 0x01, (u8 *)&value, 2); | |
409 | if (ret) | |
410 | goto end; | |
411 | } | |
3f86b832 | 412 | } |
94f6c086 AS |
413 | ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, ACPI_SBS_BATTERY, |
414 | 0x01, (u8 *)&battery->alarm_capacity, 2); | |
415 | end: | |
416 | return ret; | |
3f86b832 RT |
417 | } |
418 | ||
419 | static int acpi_ac_get_present(struct acpi_sbs *sbs) | |
420 | { | |
db1c291a AS |
421 | int result; |
422 | u16 status; | |
3f86b832 | 423 | |
db1c291a AS |
424 | result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_CHARGER, |
425 | 0x13, (u8 *) & status); | |
426 | if (!result) | |
427 | sbs->charger_present = (status >> 15) & 0x1; | |
635227ee | 428 | return result; |
3f86b832 RT |
429 | } |
430 | ||
431 | /* -------------------------------------------------------------------------- | |
432 | FS Interface (/proc/acpi) | |
433 | -------------------------------------------------------------------------- */ | |
434 | ||
435 | /* Generic Routines */ | |
3f86b832 | 436 | static int |
db1c291a | 437 | acpi_sbs_add_fs(struct proc_dir_entry **dir, |
94f6c086 AS |
438 | struct proc_dir_entry *parent_dir, |
439 | char *dir_name, | |
440 | struct file_operations *info_fops, | |
441 | struct file_operations *state_fops, | |
442 | struct file_operations *alarm_fops, void *data) | |
3f86b832 RT |
443 | { |
444 | struct proc_dir_entry *entry = NULL; | |
445 | ||
3f86b832 RT |
446 | if (!*dir) { |
447 | *dir = proc_mkdir(dir_name, parent_dir); | |
448 | if (!*dir) { | |
635227ee | 449 | return -ENODEV; |
3f86b832 RT |
450 | } |
451 | (*dir)->owner = THIS_MODULE; | |
452 | } | |
453 | ||
454 | /* 'info' [R] */ | |
455 | if (info_fops) { | |
456 | entry = create_proc_entry(ACPI_SBS_FILE_INFO, S_IRUGO, *dir); | |
94f6c086 | 457 | if (entry) { |
3f86b832 RT |
458 | entry->proc_fops = info_fops; |
459 | entry->data = data; | |
460 | entry->owner = THIS_MODULE; | |
461 | } | |
462 | } | |
463 | ||
464 | /* 'state' [R] */ | |
465 | if (state_fops) { | |
466 | entry = create_proc_entry(ACPI_SBS_FILE_STATE, S_IRUGO, *dir); | |
94f6c086 | 467 | if (entry) { |
3f86b832 RT |
468 | entry->proc_fops = state_fops; |
469 | entry->data = data; | |
470 | entry->owner = THIS_MODULE; | |
471 | } | |
472 | } | |
473 | ||
474 | /* 'alarm' [R/W] */ | |
475 | if (alarm_fops) { | |
476 | entry = create_proc_entry(ACPI_SBS_FILE_ALARM, S_IRUGO, *dir); | |
94f6c086 | 477 | if (entry) { |
3f86b832 RT |
478 | entry->proc_fops = alarm_fops; |
479 | entry->data = data; | |
480 | entry->owner = THIS_MODULE; | |
481 | } | |
482 | } | |
635227ee | 483 | return 0; |
3f86b832 RT |
484 | } |
485 | ||
486 | static void | |
db1c291a | 487 | acpi_sbs_remove_fs(struct proc_dir_entry **dir, |
3f86b832 RT |
488 | struct proc_dir_entry *parent_dir) |
489 | { | |
3f86b832 RT |
490 | if (*dir) { |
491 | remove_proc_entry(ACPI_SBS_FILE_INFO, *dir); | |
492 | remove_proc_entry(ACPI_SBS_FILE_STATE, *dir); | |
493 | remove_proc_entry(ACPI_SBS_FILE_ALARM, *dir); | |
494 | remove_proc_entry((*dir)->name, parent_dir); | |
495 | *dir = NULL; | |
496 | } | |
3f86b832 RT |
497 | } |
498 | ||
499 | /* Smart Battery Interface */ | |
3f86b832 RT |
500 | static struct proc_dir_entry *acpi_battery_dir = NULL; |
501 | ||
db1c291a AS |
502 | static inline char *acpi_battery_units(struct acpi_battery *battery) |
503 | { | |
504 | return acpi_battery_mode(battery) ? " mWh" : " mAh"; | |
505 | } | |
506 | ||
507 | ||
3f86b832 RT |
508 | static int acpi_battery_read_info(struct seq_file *seq, void *offset) |
509 | { | |
50dd0969 | 510 | struct acpi_battery *battery = seq->private; |
72206233 | 511 | struct acpi_sbs *sbs = battery->sbs; |
3f86b832 RT |
512 | int result = 0; |
513 | ||
db1c291a | 514 | mutex_lock(&sbs->lock); |
3f86b832 | 515 | |
db1c291a AS |
516 | seq_printf(seq, "present: %s\n", |
517 | (battery->present) ? "yes" : "no"); | |
518 | if (!battery->present) | |
72206233 | 519 | goto end; |
3f86b832 | 520 | |
72206233 | 521 | seq_printf(seq, "design capacity: %i%s\n", |
db1c291a AS |
522 | battery->design_capacity * acpi_battery_scale(battery), |
523 | acpi_battery_units(battery)); | |
72206233 | 524 | seq_printf(seq, "last full capacity: %i%s\n", |
db1c291a AS |
525 | battery->full_charge_capacity * acpi_battery_scale(battery), |
526 | acpi_battery_units(battery)); | |
3f86b832 | 527 | seq_printf(seq, "battery technology: rechargeable\n"); |
3f86b832 | 528 | seq_printf(seq, "design voltage: %i mV\n", |
db1c291a | 529 | battery->design_voltage * acpi_battery_vscale(battery)); |
3f86b832 RT |
530 | seq_printf(seq, "design capacity warning: unknown\n"); |
531 | seq_printf(seq, "design capacity low: unknown\n"); | |
532 | seq_printf(seq, "capacity granularity 1: unknown\n"); | |
533 | seq_printf(seq, "capacity granularity 2: unknown\n"); | |
db1c291a | 534 | seq_printf(seq, "model number: %s\n", battery->device_name); |
3f86b832 | 535 | seq_printf(seq, "serial number: %i\n", |
89862e3b | 536 | battery->serial_number); |
3f86b832 | 537 | seq_printf(seq, "battery type: %s\n", |
89862e3b | 538 | battery->device_chemistry); |
3f86b832 | 539 | seq_printf(seq, "OEM info: %s\n", |
89862e3b | 540 | battery->manufacturer_name); |
3f86b832 | 541 | end: |
db1c291a | 542 | mutex_unlock(&sbs->lock); |
635227ee | 543 | return result; |
3f86b832 RT |
544 | } |
545 | ||
546 | static int acpi_battery_info_open_fs(struct inode *inode, struct file *file) | |
547 | { | |
548 | return single_open(file, acpi_battery_read_info, PDE(inode)->data); | |
549 | } | |
550 | ||
551 | static int acpi_battery_read_state(struct seq_file *seq, void *offset) | |
552 | { | |
72206233 VL |
553 | struct acpi_battery *battery = seq->private; |
554 | struct acpi_sbs *sbs = battery->sbs; | |
3f86b832 | 555 | int result = 0; |
3f86b832 | 556 | |
db1c291a AS |
557 | mutex_lock(&sbs->lock); |
558 | seq_printf(seq, "present: %s\n", | |
559 | (battery->present) ? "yes" : "no"); | |
560 | if (!battery->present) | |
3f86b832 | 561 | goto end; |
3f86b832 | 562 | |
db1c291a AS |
563 | acpi_battery_get_state(battery); |
564 | seq_printf(seq, "capacity state: %s\n", | |
565 | (battery->state & 0x0010) ? "critical" : "ok"); | |
566 | seq_printf(seq, "charging state: %s\n", | |
567 | (battery->current_now < 0) ? "discharging" : | |
568 | ((battery->current_now > 0) ? "charging" : "charged")); | |
569 | seq_printf(seq, "present rate: %d mA\n", | |
570 | abs(battery->current_now) * acpi_battery_ipscale(battery)); | |
72206233 | 571 | seq_printf(seq, "remaining capacity: %i%s\n", |
db1c291a AS |
572 | battery->capacity_now * acpi_battery_scale(battery), |
573 | acpi_battery_units(battery)); | |
3f86b832 | 574 | seq_printf(seq, "present voltage: %i mV\n", |
db1c291a | 575 | battery->voltage_now * acpi_battery_vscale(battery)); |
3f86b832 RT |
576 | |
577 | end: | |
db1c291a | 578 | mutex_unlock(&sbs->lock); |
635227ee | 579 | return result; |
3f86b832 RT |
580 | } |
581 | ||
582 | static int acpi_battery_state_open_fs(struct inode *inode, struct file *file) | |
583 | { | |
584 | return single_open(file, acpi_battery_read_state, PDE(inode)->data); | |
585 | } | |
586 | ||
587 | static int acpi_battery_read_alarm(struct seq_file *seq, void *offset) | |
588 | { | |
50dd0969 | 589 | struct acpi_battery *battery = seq->private; |
72206233 | 590 | struct acpi_sbs *sbs = battery->sbs; |
3f86b832 | 591 | int result = 0; |
3f86b832 | 592 | |
db1c291a | 593 | mutex_lock(&sbs->lock); |
3f86b832 | 594 | |
89862e3b | 595 | if (!battery->present) { |
3f86b832 RT |
596 | seq_printf(seq, "present: no\n"); |
597 | goto end; | |
598 | } | |
599 | ||
db1c291a | 600 | acpi_battery_get_alarm(battery); |
3f86b832 | 601 | seq_printf(seq, "alarm: "); |
db1c291a | 602 | if (battery->alarm_capacity) |
72206233 | 603 | seq_printf(seq, "%i%s\n", |
db1c291a AS |
604 | battery->alarm_capacity * |
605 | acpi_battery_scale(battery), | |
606 | acpi_battery_units(battery)); | |
607 | else | |
3f86b832 | 608 | seq_printf(seq, "disabled\n"); |
3f86b832 | 609 | end: |
db1c291a | 610 | mutex_unlock(&sbs->lock); |
635227ee | 611 | return result; |
3f86b832 RT |
612 | } |
613 | ||
614 | static ssize_t | |
615 | acpi_battery_write_alarm(struct file *file, const char __user * buffer, | |
616 | size_t count, loff_t * ppos) | |
617 | { | |
50dd0969 JE |
618 | struct seq_file *seq = file->private_data; |
619 | struct acpi_battery *battery = seq->private; | |
72206233 | 620 | struct acpi_sbs *sbs = battery->sbs; |
3f86b832 | 621 | char alarm_string[12] = { '\0' }; |
db1c291a AS |
622 | int result = 0; |
623 | mutex_lock(&sbs->lock); | |
89862e3b | 624 | if (!battery->present) { |
3f86b832 RT |
625 | result = -ENODEV; |
626 | goto end; | |
627 | } | |
3f86b832 RT |
628 | if (count > sizeof(alarm_string) - 1) { |
629 | result = -EINVAL; | |
630 | goto end; | |
631 | } | |
3f86b832 RT |
632 | if (copy_from_user(alarm_string, buffer, count)) { |
633 | result = -EFAULT; | |
634 | goto end; | |
635 | } | |
3f86b832 | 636 | alarm_string[count] = 0; |
94f6c086 AS |
637 | battery->alarm_capacity = simple_strtoul(alarm_string, NULL, 0) / |
638 | acpi_battery_scale(battery); | |
db1c291a | 639 | acpi_battery_set_alarm(battery); |
3f86b832 | 640 | end: |
db1c291a AS |
641 | mutex_unlock(&sbs->lock); |
642 | if (result) | |
635227ee | 643 | return result; |
db1c291a | 644 | return count; |
3f86b832 RT |
645 | } |
646 | ||
647 | static int acpi_battery_alarm_open_fs(struct inode *inode, struct file *file) | |
648 | { | |
649 | return single_open(file, acpi_battery_read_alarm, PDE(inode)->data); | |
650 | } | |
651 | ||
652 | static struct file_operations acpi_battery_info_fops = { | |
653 | .open = acpi_battery_info_open_fs, | |
654 | .read = seq_read, | |
655 | .llseek = seq_lseek, | |
656 | .release = single_release, | |
657 | .owner = THIS_MODULE, | |
658 | }; | |
659 | ||
660 | static struct file_operations acpi_battery_state_fops = { | |
661 | .open = acpi_battery_state_open_fs, | |
662 | .read = seq_read, | |
663 | .llseek = seq_lseek, | |
664 | .release = single_release, | |
665 | .owner = THIS_MODULE, | |
666 | }; | |
667 | ||
668 | static struct file_operations acpi_battery_alarm_fops = { | |
669 | .open = acpi_battery_alarm_open_fs, | |
670 | .read = seq_read, | |
671 | .write = acpi_battery_write_alarm, | |
672 | .llseek = seq_lseek, | |
673 | .release = single_release, | |
674 | .owner = THIS_MODULE, | |
675 | }; | |
676 | ||
677 | /* Legacy AC Adapter Interface */ | |
678 | ||
679 | static struct proc_dir_entry *acpi_ac_dir = NULL; | |
680 | ||
681 | static int acpi_ac_read_state(struct seq_file *seq, void *offset) | |
682 | { | |
3f86b832 | 683 | |
db1c291a | 684 | struct acpi_sbs *sbs = seq->private; |
3f86b832 | 685 | |
db1c291a | 686 | mutex_lock(&sbs->lock); |
3f86b832 RT |
687 | |
688 | seq_printf(seq, "state: %s\n", | |
89862e3b | 689 | sbs->charger_present ? "on-line" : "off-line"); |
3f86b832 | 690 | |
db1c291a | 691 | mutex_unlock(&sbs->lock); |
635227ee | 692 | return 0; |
3f86b832 RT |
693 | } |
694 | ||
695 | static int acpi_ac_state_open_fs(struct inode *inode, struct file *file) | |
696 | { | |
697 | return single_open(file, acpi_ac_read_state, PDE(inode)->data); | |
698 | } | |
699 | ||
700 | static struct file_operations acpi_ac_state_fops = { | |
701 | .open = acpi_ac_state_open_fs, | |
702 | .read = seq_read, | |
703 | .llseek = seq_lseek, | |
704 | .release = single_release, | |
705 | .owner = THIS_MODULE, | |
706 | }; | |
707 | ||
708 | /* -------------------------------------------------------------------------- | |
709 | Driver Interface | |
710 | -------------------------------------------------------------------------- */ | |
db1c291a | 711 | static int acpi_battery_read(struct acpi_battery *battery) |
3f86b832 | 712 | { |
db1c291a AS |
713 | int result = 0, saved_present = battery->present; |
714 | u16 state; | |
3f86b832 | 715 | |
db1c291a AS |
716 | if (battery->sbs->manager_present) { |
717 | result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, | |
718 | ACPI_SBS_MANAGER, 0x01, (u8 *)&state); | |
719 | if (!result) | |
720 | battery->present = state & (1 << battery->id); | |
721 | state &= 0x0fff; | |
722 | state |= 1 << (battery->id + 12); | |
723 | acpi_smbus_write(battery->sbs->hc, SMBUS_WRITE_WORD, | |
724 | ACPI_SBS_MANAGER, 0x01, (u8 *)&state, 2); | |
725 | } else if (battery->id == 0) | |
726 | battery->present = 1; | |
727 | if (result || !battery->present) | |
728 | return result; | |
3f86b832 | 729 | |
db1c291a AS |
730 | if (saved_present != battery->present) { |
731 | battery->update_time = 0; | |
732 | result = acpi_battery_get_info(battery); | |
733 | if (result) | |
734 | return result; | |
735 | } | |
736 | result = acpi_battery_get_state(battery); | |
737 | return result; | |
738 | } | |
3f86b832 | 739 | |
94f6c086 | 740 | /* Smart Battery */ |
db1c291a AS |
741 | static int acpi_battery_add(struct acpi_sbs *sbs, int id) |
742 | { | |
db1c291a | 743 | struct acpi_battery *battery = &sbs->battery[id]; |
94f6c086 AS |
744 | int result; |
745 | ||
3f86b832 RT |
746 | battery->id = id; |
747 | battery->sbs = sbs; | |
db1c291a AS |
748 | result = acpi_battery_read(battery); |
749 | if (result) | |
750 | return result; | |
3f86b832 | 751 | |
db1c291a AS |
752 | sprintf(battery->name, ACPI_BATTERY_DIR_NAME, id); |
753 | acpi_sbs_add_fs(&battery->proc_entry, acpi_battery_dir, | |
754 | battery->name, &acpi_battery_info_fops, | |
755 | &acpi_battery_state_fops, &acpi_battery_alarm_fops, | |
756 | battery); | |
94f6c086 AS |
757 | battery->bat.name = battery->name; |
758 | battery->bat.type = POWER_SUPPLY_TYPE_BATTERY; | |
759 | if (!acpi_battery_mode(battery)) { | |
760 | battery->bat.properties = sbs_charge_battery_props; | |
761 | battery->bat.num_properties = | |
762 | ARRAY_SIZE(sbs_charge_battery_props); | |
763 | } else { | |
764 | battery->bat.properties = sbs_energy_battery_props; | |
765 | battery->bat.num_properties = | |
766 | ARRAY_SIZE(sbs_energy_battery_props); | |
767 | } | |
768 | battery->bat.get_property = acpi_sbs_battery_get_property; | |
769 | result = power_supply_register(&sbs->device->dev, &battery->bat); | |
72206233 | 770 | printk(KERN_INFO PREFIX "%s [%s]: Battery Slot [%s] (battery %s)\n", |
db1c291a AS |
771 | ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device), |
772 | battery->name, sbs->battery->present ? "present" : "absent"); | |
635227ee | 773 | return result; |
3f86b832 RT |
774 | } |
775 | ||
776 | static void acpi_battery_remove(struct acpi_sbs *sbs, int id) | |
777 | { | |
94f6c086 AS |
778 | if (sbs->battery[id].bat.dev) |
779 | power_supply_unregister(&sbs->battery[id].bat); | |
89862e3b | 780 | if (sbs->battery[id].proc_entry) { |
db1c291a AS |
781 | acpi_sbs_remove_fs(&(sbs->battery[id].proc_entry), |
782 | acpi_battery_dir); | |
3f86b832 RT |
783 | } |
784 | } | |
785 | ||
db1c291a | 786 | static int acpi_charger_add(struct acpi_sbs *sbs) |
3f86b832 RT |
787 | { |
788 | int result; | |
789 | ||
3f86b832 | 790 | result = acpi_ac_get_present(sbs); |
db1c291a | 791 | if (result) |
3f86b832 | 792 | goto end; |
db1c291a AS |
793 | result = acpi_sbs_add_fs(&sbs->charger_entry, acpi_ac_dir, |
794 | ACPI_AC_DIR_NAME, NULL, | |
795 | &acpi_ac_state_fops, NULL, sbs); | |
796 | if (result) | |
3f86b832 | 797 | goto end; |
94f6c086 AS |
798 | sbs->charger.name = "sbs-charger"; |
799 | sbs->charger.type = POWER_SUPPLY_TYPE_MAINS; | |
800 | sbs->charger.properties = sbs_ac_props; | |
801 | sbs->charger.num_properties = ARRAY_SIZE(sbs_ac_props); | |
802 | sbs->charger.get_property = sbs_get_ac_property; | |
803 | power_supply_register(&sbs->device->dev, &sbs->charger); | |
72206233 VL |
804 | printk(KERN_INFO PREFIX "%s [%s]: AC Adapter [%s] (%s)\n", |
805 | ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device), | |
89862e3b | 806 | ACPI_AC_DIR_NAME, sbs->charger_present ? "on-line" : "off-line"); |
3f86b832 | 807 | end: |
635227ee | 808 | return result; |
3f86b832 RT |
809 | } |
810 | ||
db1c291a | 811 | static void acpi_charger_remove(struct acpi_sbs *sbs) |
3f86b832 | 812 | { |
94f6c086 AS |
813 | if (sbs->charger.dev) |
814 | power_supply_unregister(&sbs->charger); | |
db1c291a AS |
815 | if (sbs->charger_entry) |
816 | acpi_sbs_remove_fs(&sbs->charger_entry, acpi_ac_dir); | |
3f86b832 RT |
817 | } |
818 | ||
db1c291a | 819 | void acpi_sbs_callback(void *context) |
3f86b832 | 820 | { |
db1c291a AS |
821 | int id; |
822 | struct acpi_sbs *sbs = context; | |
823 | struct acpi_battery *bat; | |
824 | u8 saved_charger_state = sbs->charger_present; | |
825 | u8 saved_battery_state; | |
826 | acpi_ac_get_present(sbs); | |
827 | if (sbs->charger_present != saved_charger_state) { | |
94f6c086 | 828 | #ifdef CONFIG_ACPI_PROC_EVENT |
db1c291a AS |
829 | acpi_bus_generate_proc_event4(ACPI_AC_CLASS, ACPI_AC_DIR_NAME, |
830 | ACPI_SBS_NOTIFY_STATUS, | |
831 | sbs->charger_present); | |
94f6c086 AS |
832 | #endif |
833 | kobject_uevent(&sbs->charger.dev->kobj, KOBJ_CHANGE); | |
3f86b832 | 834 | } |
db1c291a AS |
835 | if (sbs->manager_present) { |
836 | for (id = 0; id < MAX_SBS_BAT; ++id) { | |
837 | if (!(sbs->batteries_supported & (1 << id))) | |
838 | continue; | |
839 | bat = &sbs->battery[id]; | |
840 | saved_battery_state = bat->present; | |
841 | acpi_battery_read(bat); | |
842 | if (saved_battery_state == bat->present) | |
843 | continue; | |
94f6c086 | 844 | #ifdef CONFIG_ACPI_PROC_EVENT |
db1c291a AS |
845 | acpi_bus_generate_proc_event4(ACPI_BATTERY_CLASS, |
846 | bat->name, | |
847 | ACPI_SBS_NOTIFY_STATUS, | |
848 | bat->present); | |
94f6c086 AS |
849 | #endif |
850 | kobject_uevent(&bat->bat.dev->kobj, KOBJ_CHANGE); | |
3f86b832 | 851 | } |
3f86b832 | 852 | } |
3f86b832 RT |
853 | } |
854 | ||
db1c291a | 855 | static int acpi_sbs_remove(struct acpi_device *device, int type); |
3f86b832 RT |
856 | |
857 | static int acpi_sbs_add(struct acpi_device *device) | |
858 | { | |
db1c291a AS |
859 | struct acpi_sbs *sbs; |
860 | int result = 0; | |
6d15702c | 861 | int id; |
3f86b832 | 862 | |
36bcbec7 | 863 | sbs = kzalloc(sizeof(struct acpi_sbs), GFP_KERNEL); |
3f86b832 | 864 | if (!sbs) { |
72206233 VL |
865 | result = -ENOMEM; |
866 | goto end; | |
3f86b832 | 867 | } |
3f86b832 | 868 | |
db1c291a | 869 | mutex_init(&sbs->lock); |
72206233 | 870 | |
91087dfa | 871 | sbs->hc = acpi_driver_data(device->parent); |
db1c291a | 872 | sbs->device = device; |
3f86b832 RT |
873 | strcpy(acpi_device_name(device), ACPI_SBS_DEVICE_NAME); |
874 | strcpy(acpi_device_class(device), ACPI_SBS_CLASS); | |
875 | acpi_driver_data(device) = sbs; | |
876 | ||
db1c291a | 877 | result = acpi_charger_add(sbs); |
72206233 VL |
878 | if (result) |
879 | goto end; | |
3f86b832 | 880 | |
db1c291a AS |
881 | result = acpi_manager_get_info(sbs); |
882 | if (!result) { | |
883 | sbs->manager_present = 1; | |
884 | for (id = 0; id < MAX_SBS_BAT; ++id) | |
885 | if ((sbs->batteries_supported & (1 << id))) | |
886 | acpi_battery_add(sbs, id); | |
887 | } else | |
888 | acpi_battery_add(sbs, 0); | |
889 | acpi_smbus_register_callback(sbs->hc, acpi_sbs_callback, sbs); | |
3f86b832 | 890 | end: |
db1c291a AS |
891 | if (result) |
892 | acpi_sbs_remove(device, 0); | |
635227ee | 893 | return result; |
3f86b832 RT |
894 | } |
895 | ||
72206233 | 896 | static int acpi_sbs_remove(struct acpi_device *device, int type) |
3f86b832 | 897 | { |
cece9014 | 898 | struct acpi_sbs *sbs; |
3f86b832 RT |
899 | int id; |
900 | ||
db1c291a | 901 | if (!device) |
963497c1 | 902 | return -EINVAL; |
72206233 | 903 | sbs = acpi_driver_data(device); |
db1c291a | 904 | if (!sbs) |
635227ee | 905 | return -EINVAL; |
db1c291a AS |
906 | mutex_lock(&sbs->lock); |
907 | acpi_smbus_unregister_callback(sbs->hc); | |
908 | for (id = 0; id < MAX_SBS_BAT; ++id) | |
3f86b832 | 909 | acpi_battery_remove(sbs, id); |
db1c291a AS |
910 | acpi_charger_remove(sbs); |
911 | mutex_unlock(&sbs->lock); | |
912 | mutex_destroy(&sbs->lock); | |
3f86b832 | 913 | kfree(sbs); |
635227ee | 914 | return 0; |
3f86b832 RT |
915 | } |
916 | ||
72206233 VL |
917 | static void acpi_sbs_rmdirs(void) |
918 | { | |
919 | if (acpi_ac_dir) { | |
920 | acpi_unlock_ac_dir(acpi_ac_dir); | |
921 | acpi_ac_dir = NULL; | |
922 | } | |
923 | if (acpi_battery_dir) { | |
924 | acpi_unlock_battery_dir(acpi_battery_dir); | |
925 | acpi_battery_dir = NULL; | |
926 | } | |
927 | } | |
928 | ||
929 | static int acpi_sbs_resume(struct acpi_device *device) | |
930 | { | |
931 | struct acpi_sbs *sbs; | |
72206233 VL |
932 | if (!device) |
933 | return -EINVAL; | |
72206233 | 934 | sbs = device->driver_data; |
db1c291a | 935 | acpi_sbs_callback(sbs); |
72206233 VL |
936 | return 0; |
937 | } | |
938 | ||
94f6c086 AS |
939 | static struct acpi_driver acpi_sbs_driver = { |
940 | .name = "sbs", | |
941 | .class = ACPI_SBS_CLASS, | |
942 | .ids = sbs_device_ids, | |
943 | .ops = { | |
944 | .add = acpi_sbs_add, | |
945 | .remove = acpi_sbs_remove, | |
946 | .resume = acpi_sbs_resume, | |
947 | }, | |
948 | }; | |
949 | ||
3f86b832 RT |
950 | static int __init acpi_sbs_init(void) |
951 | { | |
952 | int result = 0; | |
953 | ||
b20d2aeb LB |
954 | if (acpi_disabled) |
955 | return -ENODEV; | |
3f86b832 | 956 | acpi_ac_dir = acpi_lock_ac_dir(); |
94f6c086 | 957 | if (!acpi_ac_dir) |
635227ee | 958 | return -ENODEV; |
3f86b832 RT |
959 | acpi_battery_dir = acpi_lock_battery_dir(); |
960 | if (!acpi_battery_dir) { | |
72206233 | 961 | acpi_sbs_rmdirs(); |
635227ee | 962 | return -ENODEV; |
3f86b832 | 963 | } |
3f86b832 RT |
964 | result = acpi_bus_register_driver(&acpi_sbs_driver); |
965 | if (result < 0) { | |
72206233 | 966 | acpi_sbs_rmdirs(); |
635227ee | 967 | return -ENODEV; |
3f86b832 | 968 | } |
635227ee | 969 | return 0; |
3f86b832 RT |
970 | } |
971 | ||
972 | static void __exit acpi_sbs_exit(void) | |
973 | { | |
3f86b832 | 974 | acpi_bus_unregister_driver(&acpi_sbs_driver); |
72206233 | 975 | acpi_sbs_rmdirs(); |
635227ee | 976 | return; |
3f86b832 RT |
977 | } |
978 | ||
979 | module_init(acpi_sbs_init); | |
980 | module_exit(acpi_sbs_exit); |