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3f86b832 RT |
1 | /* |
2 | * acpi_sbs.c - ACPI Smart Battery System Driver ($Revision: 1.16 $) | |
3 | * | |
4 | * Copyright (c) 2005 Rich Townsend <rhdt@bartol.udel.edu> | |
5 | * | |
6 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or (at | |
11 | * your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License along | |
19 | * with this program; if not, write to the Free Software Foundation, Inc., | |
20 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
21 | * | |
22 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
23 | */ | |
24 | ||
25 | #include <linux/init.h> | |
26 | #include <linux/module.h> | |
27 | #include <linux/moduleparam.h> | |
28 | #include <linux/kernel.h> | |
29 | #include <linux/proc_fs.h> | |
30 | #include <linux/seq_file.h> | |
31 | #include <asm/uaccess.h> | |
32 | #include <linux/acpi.h> | |
33 | #include <linux/i2c.h> | |
34 | #include <linux/delay.h> | |
35 | ||
36 | #include "i2c_ec.h" | |
37 | ||
38 | #define DEF_CAPACITY_UNIT 3 | |
39 | #define MAH_CAPACITY_UNIT 1 | |
40 | #define MWH_CAPACITY_UNIT 2 | |
41 | #define CAPACITY_UNIT DEF_CAPACITY_UNIT | |
42 | ||
43 | #define REQUEST_UPDATE_MODE 1 | |
44 | #define QUEUE_UPDATE_MODE 2 | |
45 | ||
46 | #define DATA_TYPE_COMMON 0 | |
47 | #define DATA_TYPE_INFO 1 | |
48 | #define DATA_TYPE_STATE 2 | |
49 | #define DATA_TYPE_ALARM 3 | |
50 | #define DATA_TYPE_AC_STATE 4 | |
51 | ||
52 | extern struct proc_dir_entry *acpi_lock_ac_dir(void); | |
53 | extern struct proc_dir_entry *acpi_lock_battery_dir(void); | |
54 | extern void acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir); | |
55 | extern void acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir); | |
56 | ||
57 | #define ACPI_SBS_COMPONENT 0x00080000 | |
58 | #define ACPI_SBS_CLASS "sbs" | |
59 | #define ACPI_AC_CLASS "ac_adapter" | |
60 | #define ACPI_BATTERY_CLASS "battery" | |
61 | #define ACPI_SBS_HID "ACPI0002" | |
3f86b832 RT |
62 | #define ACPI_SBS_DEVICE_NAME "Smart Battery System" |
63 | #define ACPI_SBS_FILE_INFO "info" | |
64 | #define ACPI_SBS_FILE_STATE "state" | |
65 | #define ACPI_SBS_FILE_ALARM "alarm" | |
66 | #define ACPI_BATTERY_DIR_NAME "BAT%i" | |
67 | #define ACPI_AC_DIR_NAME "AC0" | |
68 | #define ACPI_SBC_SMBUS_ADDR 0x9 | |
69 | #define ACPI_SBSM_SMBUS_ADDR 0xa | |
70 | #define ACPI_SB_SMBUS_ADDR 0xb | |
71 | #define ACPI_SBS_AC_NOTIFY_STATUS 0x80 | |
72 | #define ACPI_SBS_BATTERY_NOTIFY_STATUS 0x80 | |
73 | #define ACPI_SBS_BATTERY_NOTIFY_INFO 0x81 | |
74 | ||
75 | #define _COMPONENT ACPI_SBS_COMPONENT | |
76 | ||
77 | #define MAX_SBS_BAT 4 | |
78 | #define MAX_SMBUS_ERR 1 | |
79 | ||
f52fd66d | 80 | ACPI_MODULE_NAME("sbs"); |
3f86b832 RT |
81 | |
82 | MODULE_AUTHOR("Rich Townsend"); | |
83 | MODULE_DESCRIPTION("Smart Battery System ACPI interface driver"); | |
84 | MODULE_LICENSE("GPL"); | |
85 | ||
86 | static struct semaphore sbs_sem; | |
87 | ||
88 | #define UPDATE_MODE QUEUE_UPDATE_MODE | |
89 | /* REQUEST_UPDATE_MODE QUEUE_UPDATE_MODE */ | |
90 | #define UPDATE_INFO_MODE 0 | |
91 | #define UPDATE_TIME 60 | |
92 | #define UPDATE_TIME2 0 | |
93 | ||
94 | static int capacity_mode = CAPACITY_UNIT; | |
95 | static int update_mode = UPDATE_MODE; | |
96 | static int update_info_mode = UPDATE_INFO_MODE; | |
97 | static int update_time = UPDATE_TIME; | |
98 | static int update_time2 = UPDATE_TIME2; | |
99 | ||
3cd5b87d LV |
100 | module_param(capacity_mode, int, 0); |
101 | module_param(update_mode, int, 0); | |
102 | module_param(update_info_mode, int, 0); | |
103 | module_param(update_time, int, 0); | |
104 | module_param(update_time2, int, 0); | |
3f86b832 RT |
105 | |
106 | static int acpi_sbs_add(struct acpi_device *device); | |
107 | static int acpi_sbs_remove(struct acpi_device *device, int type); | |
108 | static void acpi_battery_smbus_err_handler(struct acpi_ec_smbus *smbus); | |
109 | static void acpi_sbs_update_queue(void *data); | |
110 | ||
111 | static struct acpi_driver acpi_sbs_driver = { | |
c2b6705b | 112 | .name = "sbs", |
3f86b832 RT |
113 | .class = ACPI_SBS_CLASS, |
114 | .ids = ACPI_SBS_HID, | |
115 | .ops = { | |
116 | .add = acpi_sbs_add, | |
117 | .remove = acpi_sbs_remove, | |
118 | }, | |
119 | }; | |
120 | ||
121 | struct acpi_battery_info { | |
122 | int capacity_mode; | |
123 | s16 full_charge_capacity; | |
124 | s16 design_capacity; | |
125 | s16 design_voltage; | |
126 | int vscale; | |
127 | int ipscale; | |
128 | s16 serial_number; | |
129 | char manufacturer_name[I2C_SMBUS_BLOCK_MAX + 3]; | |
130 | char device_name[I2C_SMBUS_BLOCK_MAX + 3]; | |
131 | char device_chemistry[I2C_SMBUS_BLOCK_MAX + 3]; | |
132 | }; | |
133 | ||
134 | struct acpi_battery_state { | |
135 | s16 voltage; | |
136 | s16 amperage; | |
137 | s16 remaining_capacity; | |
138 | s16 average_time_to_empty; | |
139 | s16 average_time_to_full; | |
140 | s16 battery_status; | |
141 | }; | |
142 | ||
143 | struct acpi_battery_alarm { | |
144 | s16 remaining_capacity; | |
145 | }; | |
146 | ||
147 | struct acpi_battery { | |
148 | int alive; | |
149 | int battery_present; | |
150 | int id; | |
151 | int init_state; | |
152 | struct acpi_sbs *sbs; | |
153 | struct acpi_battery_info info; | |
154 | struct acpi_battery_state state; | |
155 | struct acpi_battery_alarm alarm; | |
156 | struct proc_dir_entry *battery_entry; | |
157 | }; | |
158 | ||
159 | struct acpi_sbs { | |
160 | acpi_handle handle; | |
161 | struct acpi_device *device; | |
162 | struct acpi_ec_smbus *smbus; | |
163 | int sbsm_present; | |
164 | int sbsm_batteries_supported; | |
165 | int ac_present; | |
166 | struct proc_dir_entry *ac_entry; | |
167 | struct acpi_battery battery[MAX_SBS_BAT]; | |
168 | int update_info_mode; | |
169 | int zombie; | |
170 | int update_time; | |
171 | int update_time2; | |
172 | struct timer_list update_timer; | |
173 | }; | |
174 | ||
175 | static void acpi_update_delay(struct acpi_sbs *sbs); | |
176 | static int acpi_sbs_update_run(struct acpi_sbs *sbs, int data_type); | |
177 | ||
178 | /* -------------------------------------------------------------------------- | |
179 | SMBus Communication | |
180 | -------------------------------------------------------------------------- */ | |
181 | ||
182 | static void acpi_battery_smbus_err_handler(struct acpi_ec_smbus *smbus) | |
183 | { | |
184 | union i2c_smbus_data data; | |
185 | int result = 0; | |
186 | char *err_str; | |
187 | int err_number; | |
188 | ||
3f86b832 RT |
189 | data.word = 0; |
190 | ||
191 | result = smbus->adapter.algo-> | |
192 | smbus_xfer(&smbus->adapter, | |
193 | ACPI_SB_SMBUS_ADDR, | |
194 | 0, I2C_SMBUS_READ, 0x16, I2C_SMBUS_BLOCK_DATA, &data); | |
195 | ||
196 | err_number = (data.word & 0x000f); | |
197 | ||
198 | switch (data.word & 0x000f) { | |
199 | case 0x0000: | |
200 | err_str = "unexpected bus error"; | |
201 | break; | |
202 | case 0x0001: | |
203 | err_str = "busy"; | |
204 | break; | |
205 | case 0x0002: | |
206 | err_str = "reserved command"; | |
207 | break; | |
208 | case 0x0003: | |
209 | err_str = "unsupported command"; | |
210 | break; | |
211 | case 0x0004: | |
212 | err_str = "access denied"; | |
213 | break; | |
214 | case 0x0005: | |
215 | err_str = "overflow/underflow"; | |
216 | break; | |
217 | case 0x0006: | |
218 | err_str = "bad size"; | |
219 | break; | |
220 | case 0x0007: | |
221 | err_str = "unknown error"; | |
222 | break; | |
223 | default: | |
224 | err_str = "unrecognized error"; | |
225 | } | |
226 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
227 | "%s: ret %i, err %i\n", err_str, result, err_number)); | |
228 | } | |
229 | ||
230 | static int | |
231 | acpi_sbs_smbus_read_word(struct acpi_ec_smbus *smbus, int addr, int func, | |
232 | u16 * word, | |
233 | void (*err_handler) (struct acpi_ec_smbus * smbus)) | |
234 | { | |
235 | union i2c_smbus_data data; | |
236 | int result = 0; | |
237 | int i; | |
238 | ||
3f86b832 RT |
239 | if (err_handler == NULL) { |
240 | err_handler = acpi_battery_smbus_err_handler; | |
241 | } | |
242 | ||
243 | for (i = 0; i < MAX_SMBUS_ERR; i++) { | |
244 | result = | |
245 | smbus->adapter.algo->smbus_xfer(&smbus->adapter, addr, 0, | |
246 | I2C_SMBUS_READ, func, | |
247 | I2C_SMBUS_WORD_DATA, &data); | |
248 | if (result) { | |
249 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
250 | "try %i: smbus->adapter.algo->smbus_xfer() failed\n", | |
251 | i)); | |
252 | if (err_handler) { | |
253 | err_handler(smbus); | |
254 | } | |
255 | } else { | |
256 | *word = data.word; | |
257 | break; | |
258 | } | |
259 | } | |
260 | ||
635227ee | 261 | return result; |
3f86b832 RT |
262 | } |
263 | ||
264 | static int | |
265 | acpi_sbs_smbus_read_str(struct acpi_ec_smbus *smbus, int addr, int func, | |
266 | char *str, | |
267 | void (*err_handler) (struct acpi_ec_smbus * smbus)) | |
268 | { | |
269 | union i2c_smbus_data data; | |
270 | int result = 0; | |
271 | int i; | |
272 | ||
3f86b832 RT |
273 | if (err_handler == NULL) { |
274 | err_handler = acpi_battery_smbus_err_handler; | |
275 | } | |
276 | ||
277 | for (i = 0; i < MAX_SMBUS_ERR; i++) { | |
278 | result = | |
279 | smbus->adapter.algo->smbus_xfer(&smbus->adapter, addr, 0, | |
280 | I2C_SMBUS_READ, func, | |
281 | I2C_SMBUS_BLOCK_DATA, | |
282 | &data); | |
283 | if (result) { | |
284 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
285 | "try %i: smbus->adapter.algo->smbus_xfer() failed\n", | |
286 | i)); | |
287 | if (err_handler) { | |
288 | err_handler(smbus); | |
289 | } | |
290 | } else { | |
291 | strncpy(str, (const char *)data.block + 1, | |
292 | data.block[0]); | |
293 | str[data.block[0]] = 0; | |
294 | break; | |
295 | } | |
296 | } | |
297 | ||
635227ee | 298 | return result; |
3f86b832 RT |
299 | } |
300 | ||
301 | static int | |
302 | acpi_sbs_smbus_write_word(struct acpi_ec_smbus *smbus, int addr, int func, | |
303 | int word, | |
304 | void (*err_handler) (struct acpi_ec_smbus * smbus)) | |
305 | { | |
306 | union i2c_smbus_data data; | |
307 | int result = 0; | |
308 | int i; | |
309 | ||
3f86b832 RT |
310 | if (err_handler == NULL) { |
311 | err_handler = acpi_battery_smbus_err_handler; | |
312 | } | |
313 | ||
314 | data.word = word; | |
315 | ||
316 | for (i = 0; i < MAX_SMBUS_ERR; i++) { | |
317 | result = | |
318 | smbus->adapter.algo->smbus_xfer(&smbus->adapter, addr, 0, | |
319 | I2C_SMBUS_WRITE, func, | |
320 | I2C_SMBUS_WORD_DATA, &data); | |
321 | if (result) { | |
322 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
323 | "try %i: smbus->adapter.algo" | |
324 | "->smbus_xfer() failed\n", i)); | |
325 | if (err_handler) { | |
326 | err_handler(smbus); | |
327 | } | |
328 | } else { | |
329 | break; | |
330 | } | |
331 | } | |
332 | ||
635227ee | 333 | return result; |
3f86b832 RT |
334 | } |
335 | ||
336 | /* -------------------------------------------------------------------------- | |
337 | Smart Battery System Management | |
338 | -------------------------------------------------------------------------- */ | |
339 | ||
340 | /* Smart Battery */ | |
341 | ||
342 | static int acpi_sbs_generate_event(struct acpi_device *device, | |
343 | int event, int state, char *bid, char *class) | |
344 | { | |
345 | char bid_saved[5]; | |
346 | char class_saved[20]; | |
347 | int result = 0; | |
348 | ||
3f86b832 RT |
349 | strcpy(bid_saved, acpi_device_bid(device)); |
350 | strcpy(class_saved, acpi_device_class(device)); | |
351 | ||
352 | strcpy(acpi_device_bid(device), bid); | |
353 | strcpy(acpi_device_class(device), class); | |
354 | ||
355 | result = acpi_bus_generate_event(device, event, state); | |
356 | ||
357 | strcpy(acpi_device_bid(device), bid_saved); | |
358 | strcpy(acpi_device_class(device), class_saved); | |
359 | ||
635227ee | 360 | return result; |
3f86b832 RT |
361 | } |
362 | ||
363 | static int acpi_battery_get_present(struct acpi_battery *battery) | |
364 | { | |
365 | s16 state; | |
366 | int result = 0; | |
367 | int is_present = 0; | |
368 | ||
3f86b832 RT |
369 | result = acpi_sbs_smbus_read_word(battery->sbs->smbus, |
370 | ACPI_SBSM_SMBUS_ADDR, 0x01, | |
371 | &state, NULL); | |
372 | if (result) { | |
373 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
374 | "acpi_sbs_smbus_read_word() failed")); | |
375 | } | |
376 | if (!result) { | |
377 | is_present = (state & 0x000f) & (1 << battery->id); | |
378 | } | |
379 | battery->battery_present = is_present; | |
380 | ||
635227ee | 381 | return result; |
3f86b832 RT |
382 | } |
383 | ||
384 | static int acpi_battery_is_present(struct acpi_battery *battery) | |
385 | { | |
386 | return (battery->battery_present); | |
387 | } | |
388 | ||
389 | static int acpi_ac_is_present(struct acpi_sbs *sbs) | |
390 | { | |
391 | return (sbs->ac_present); | |
392 | } | |
393 | ||
394 | static int acpi_battery_select(struct acpi_battery *battery) | |
395 | { | |
396 | struct acpi_ec_smbus *smbus = battery->sbs->smbus; | |
397 | int result = 0; | |
398 | s16 state; | |
399 | int foo; | |
400 | ||
3f86b832 RT |
401 | if (battery->sbs->sbsm_present) { |
402 | ||
403 | /* Take special care not to knobble other nibbles of | |
404 | * state (aka selector_state), since | |
405 | * it causes charging to halt on SBSELs */ | |
406 | ||
407 | result = | |
408 | acpi_sbs_smbus_read_word(smbus, ACPI_SBSM_SMBUS_ADDR, 0x01, | |
409 | &state, NULL); | |
410 | if (result) { | |
411 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
412 | "acpi_sbs_smbus_read_word() failed\n")); | |
413 | goto end; | |
414 | } | |
415 | ||
416 | foo = (state & 0x0fff) | (1 << (battery->id + 12)); | |
417 | result = | |
418 | acpi_sbs_smbus_write_word(smbus, ACPI_SBSM_SMBUS_ADDR, 0x01, | |
419 | foo, NULL); | |
420 | if (result) { | |
421 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
422 | "acpi_sbs_smbus_write_word() failed\n")); | |
423 | goto end; | |
424 | } | |
425 | } | |
426 | ||
427 | end: | |
635227ee | 428 | return result; |
3f86b832 RT |
429 | } |
430 | ||
431 | static int acpi_sbsm_get_info(struct acpi_sbs *sbs) | |
432 | { | |
433 | struct acpi_ec_smbus *smbus = sbs->smbus; | |
434 | int result = 0; | |
435 | s16 battery_system_info; | |
436 | ||
3f86b832 RT |
437 | result = acpi_sbs_smbus_read_word(smbus, ACPI_SBSM_SMBUS_ADDR, 0x04, |
438 | &battery_system_info, NULL); | |
439 | if (result) { | |
440 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
441 | "acpi_sbs_smbus_read_word() failed\n")); | |
442 | goto end; | |
443 | } | |
444 | ||
445 | sbs->sbsm_batteries_supported = battery_system_info & 0x000f; | |
446 | ||
447 | end: | |
448 | ||
635227ee | 449 | return result; |
3f86b832 RT |
450 | } |
451 | ||
452 | static int acpi_battery_get_info(struct acpi_battery *battery) | |
453 | { | |
454 | struct acpi_ec_smbus *smbus = battery->sbs->smbus; | |
455 | int result = 0; | |
456 | s16 battery_mode; | |
457 | s16 specification_info; | |
458 | ||
3f86b832 RT |
459 | result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x03, |
460 | &battery_mode, | |
461 | &acpi_battery_smbus_err_handler); | |
462 | if (result) { | |
463 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
464 | "acpi_sbs_smbus_read_word() failed\n")); | |
465 | goto end; | |
466 | } | |
467 | battery->info.capacity_mode = (battery_mode & 0x8000) >> 15; | |
468 | ||
469 | result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x10, | |
470 | &battery->info.full_charge_capacity, | |
471 | &acpi_battery_smbus_err_handler); | |
472 | if (result) { | |
473 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
474 | "acpi_sbs_smbus_read_word() failed\n")); | |
475 | goto end; | |
476 | } | |
477 | ||
478 | result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x18, | |
479 | &battery->info.design_capacity, | |
480 | &acpi_battery_smbus_err_handler); | |
481 | ||
482 | if (result) { | |
483 | goto end; | |
484 | } | |
485 | ||
486 | result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x19, | |
487 | &battery->info.design_voltage, | |
488 | &acpi_battery_smbus_err_handler); | |
489 | if (result) { | |
490 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
491 | "acpi_sbs_smbus_read_word() failed\n")); | |
492 | goto end; | |
493 | } | |
494 | ||
495 | result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x1a, | |
496 | &specification_info, | |
497 | &acpi_battery_smbus_err_handler); | |
498 | if (result) { | |
499 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
500 | "acpi_sbs_smbus_read_word() failed\n")); | |
501 | goto end; | |
502 | } | |
503 | ||
504 | switch ((specification_info & 0x0f00) >> 8) { | |
505 | case 1: | |
506 | battery->info.vscale = 10; | |
507 | break; | |
508 | case 2: | |
509 | battery->info.vscale = 100; | |
510 | break; | |
511 | case 3: | |
512 | battery->info.vscale = 1000; | |
513 | break; | |
514 | default: | |
515 | battery->info.vscale = 1; | |
516 | } | |
517 | ||
518 | switch ((specification_info & 0xf000) >> 12) { | |
519 | case 1: | |
520 | battery->info.ipscale = 10; | |
521 | break; | |
522 | case 2: | |
523 | battery->info.ipscale = 100; | |
524 | break; | |
525 | case 3: | |
526 | battery->info.ipscale = 1000; | |
527 | break; | |
528 | default: | |
529 | battery->info.ipscale = 1; | |
530 | } | |
531 | ||
532 | result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x1c, | |
533 | &battery->info.serial_number, | |
534 | &acpi_battery_smbus_err_handler); | |
535 | if (result) { | |
536 | goto end; | |
537 | } | |
538 | ||
539 | result = acpi_sbs_smbus_read_str(smbus, ACPI_SB_SMBUS_ADDR, 0x20, | |
540 | battery->info.manufacturer_name, | |
541 | &acpi_battery_smbus_err_handler); | |
542 | if (result) { | |
543 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
544 | "acpi_sbs_smbus_read_str() failed\n")); | |
545 | goto end; | |
546 | } | |
547 | ||
548 | result = acpi_sbs_smbus_read_str(smbus, ACPI_SB_SMBUS_ADDR, 0x21, | |
549 | battery->info.device_name, | |
550 | &acpi_battery_smbus_err_handler); | |
551 | if (result) { | |
552 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
553 | "acpi_sbs_smbus_read_str() failed\n")); | |
554 | goto end; | |
555 | } | |
556 | ||
557 | result = acpi_sbs_smbus_read_str(smbus, ACPI_SB_SMBUS_ADDR, 0x22, | |
558 | battery->info.device_chemistry, | |
559 | &acpi_battery_smbus_err_handler); | |
560 | if (result) { | |
561 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
562 | "acpi_sbs_smbus_read_str() failed\n")); | |
563 | goto end; | |
564 | } | |
565 | ||
566 | end: | |
635227ee | 567 | return result; |
3f86b832 RT |
568 | } |
569 | ||
570 | static void acpi_update_delay(struct acpi_sbs *sbs) | |
571 | { | |
3f86b832 RT |
572 | if (sbs->zombie) { |
573 | return; | |
574 | } | |
575 | if (sbs->update_time2 > 0) { | |
576 | msleep(sbs->update_time2 * 1000); | |
577 | } | |
578 | } | |
579 | ||
580 | static int acpi_battery_get_state(struct acpi_battery *battery) | |
581 | { | |
582 | struct acpi_ec_smbus *smbus = battery->sbs->smbus; | |
583 | int result = 0; | |
584 | ||
3f86b832 RT |
585 | acpi_update_delay(battery->sbs); |
586 | result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x09, | |
587 | &battery->state.voltage, | |
588 | &acpi_battery_smbus_err_handler); | |
589 | if (result) { | |
590 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
591 | "acpi_sbs_smbus_read_word() failed\n")); | |
592 | goto end; | |
593 | } | |
594 | ||
595 | acpi_update_delay(battery->sbs); | |
596 | result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x0a, | |
597 | &battery->state.amperage, | |
598 | &acpi_battery_smbus_err_handler); | |
599 | if (result) { | |
600 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
601 | "acpi_sbs_smbus_read_word() failed\n")); | |
602 | goto end; | |
603 | } | |
604 | ||
605 | acpi_update_delay(battery->sbs); | |
606 | result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x0f, | |
607 | &battery->state.remaining_capacity, | |
608 | &acpi_battery_smbus_err_handler); | |
609 | if (result) { | |
610 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
611 | "acpi_sbs_smbus_read_word() failed\n")); | |
612 | goto end; | |
613 | } | |
614 | ||
615 | acpi_update_delay(battery->sbs); | |
616 | result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x12, | |
617 | &battery->state.average_time_to_empty, | |
618 | &acpi_battery_smbus_err_handler); | |
619 | if (result) { | |
620 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
621 | "acpi_sbs_smbus_read_word() failed\n")); | |
622 | goto end; | |
623 | } | |
624 | ||
625 | acpi_update_delay(battery->sbs); | |
626 | result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x13, | |
627 | &battery->state.average_time_to_full, | |
628 | &acpi_battery_smbus_err_handler); | |
629 | if (result) { | |
630 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
631 | "acpi_sbs_smbus_read_word() failed\n")); | |
632 | goto end; | |
633 | } | |
634 | ||
635 | acpi_update_delay(battery->sbs); | |
636 | result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x16, | |
637 | &battery->state.battery_status, | |
638 | &acpi_battery_smbus_err_handler); | |
639 | if (result) { | |
640 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
641 | "acpi_sbs_smbus_read_word() failed\n")); | |
642 | goto end; | |
643 | } | |
644 | ||
645 | acpi_update_delay(battery->sbs); | |
646 | ||
647 | end: | |
635227ee | 648 | return result; |
3f86b832 RT |
649 | } |
650 | ||
651 | static int acpi_battery_get_alarm(struct acpi_battery *battery) | |
652 | { | |
653 | struct acpi_ec_smbus *smbus = battery->sbs->smbus; | |
654 | int result = 0; | |
655 | ||
3f86b832 RT |
656 | result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x01, |
657 | &battery->alarm.remaining_capacity, | |
658 | &acpi_battery_smbus_err_handler); | |
659 | if (result) { | |
660 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
661 | "acpi_sbs_smbus_read_word() failed\n")); | |
662 | goto end; | |
663 | } | |
664 | ||
665 | acpi_update_delay(battery->sbs); | |
666 | ||
667 | end: | |
668 | ||
635227ee | 669 | return result; |
3f86b832 RT |
670 | } |
671 | ||
672 | static int acpi_battery_set_alarm(struct acpi_battery *battery, | |
673 | unsigned long alarm) | |
674 | { | |
675 | struct acpi_ec_smbus *smbus = battery->sbs->smbus; | |
676 | int result = 0; | |
677 | s16 battery_mode; | |
678 | int foo; | |
679 | ||
3f86b832 RT |
680 | result = acpi_battery_select(battery); |
681 | if (result) { | |
682 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
683 | "acpi_battery_select() failed\n")); | |
684 | goto end; | |
685 | } | |
686 | ||
687 | /* If necessary, enable the alarm */ | |
688 | ||
689 | if (alarm > 0) { | |
690 | result = | |
691 | acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x03, | |
692 | &battery_mode, | |
693 | &acpi_battery_smbus_err_handler); | |
694 | if (result) { | |
695 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
696 | "acpi_sbs_smbus_read_word() failed\n")); | |
697 | goto end; | |
698 | } | |
699 | ||
700 | result = | |
701 | acpi_sbs_smbus_write_word(smbus, ACPI_SB_SMBUS_ADDR, 0x01, | |
702 | battery_mode & 0xbfff, | |
703 | &acpi_battery_smbus_err_handler); | |
704 | if (result) { | |
705 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
706 | "acpi_sbs_smbus_write_word() failed\n")); | |
707 | goto end; | |
708 | } | |
709 | } | |
710 | ||
711 | foo = alarm / (battery->info.capacity_mode ? 10 : 1); | |
712 | result = acpi_sbs_smbus_write_word(smbus, ACPI_SB_SMBUS_ADDR, 0x01, | |
713 | foo, | |
714 | &acpi_battery_smbus_err_handler); | |
715 | if (result) { | |
716 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
717 | "acpi_sbs_smbus_write_word() failed\n")); | |
718 | goto end; | |
719 | } | |
720 | ||
721 | end: | |
722 | ||
635227ee | 723 | return result; |
3f86b832 RT |
724 | } |
725 | ||
726 | static int acpi_battery_set_mode(struct acpi_battery *battery) | |
727 | { | |
728 | int result = 0; | |
729 | s16 battery_mode; | |
730 | ||
3f86b832 RT |
731 | if (capacity_mode == DEF_CAPACITY_UNIT) { |
732 | goto end; | |
733 | } | |
734 | ||
735 | result = acpi_sbs_smbus_read_word(battery->sbs->smbus, | |
736 | ACPI_SB_SMBUS_ADDR, 0x03, | |
737 | &battery_mode, NULL); | |
738 | if (result) { | |
739 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
740 | "acpi_sbs_smbus_read_word() failed\n")); | |
741 | goto end; | |
742 | } | |
743 | ||
744 | if (capacity_mode == MAH_CAPACITY_UNIT) { | |
745 | battery_mode &= 0x7fff; | |
746 | } else { | |
747 | battery_mode |= 0x8000; | |
748 | } | |
749 | result = acpi_sbs_smbus_write_word(battery->sbs->smbus, | |
750 | ACPI_SB_SMBUS_ADDR, 0x03, | |
751 | battery_mode, NULL); | |
752 | if (result) { | |
753 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
754 | "acpi_sbs_smbus_write_word() failed\n")); | |
755 | goto end; | |
756 | } | |
757 | ||
758 | result = acpi_sbs_smbus_read_word(battery->sbs->smbus, | |
759 | ACPI_SB_SMBUS_ADDR, 0x03, | |
760 | &battery_mode, NULL); | |
761 | if (result) { | |
762 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
763 | "acpi_sbs_smbus_read_word() failed\n")); | |
764 | goto end; | |
765 | } | |
766 | ||
767 | end: | |
635227ee | 768 | return result; |
3f86b832 RT |
769 | } |
770 | ||
771 | static int acpi_battery_init(struct acpi_battery *battery) | |
772 | { | |
773 | int result = 0; | |
774 | ||
3f86b832 RT |
775 | result = acpi_battery_select(battery); |
776 | if (result) { | |
777 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
778 | "acpi_battery_init() failed\n")); | |
779 | goto end; | |
780 | } | |
781 | ||
782 | result = acpi_battery_set_mode(battery); | |
783 | if (result) { | |
784 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
785 | "acpi_battery_set_mode() failed\n")); | |
786 | goto end; | |
787 | } | |
788 | ||
789 | result = acpi_battery_get_info(battery); | |
790 | if (result) { | |
791 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
792 | "acpi_battery_get_info() failed\n")); | |
793 | goto end; | |
794 | } | |
795 | ||
796 | result = acpi_battery_get_state(battery); | |
797 | if (result) { | |
798 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
799 | "acpi_battery_get_state() failed\n")); | |
800 | goto end; | |
801 | } | |
802 | ||
803 | result = acpi_battery_get_alarm(battery); | |
804 | if (result) { | |
805 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
806 | "acpi_battery_get_alarm() failed\n")); | |
807 | goto end; | |
808 | } | |
809 | ||
810 | end: | |
635227ee | 811 | return result; |
3f86b832 RT |
812 | } |
813 | ||
814 | static int acpi_ac_get_present(struct acpi_sbs *sbs) | |
815 | { | |
816 | struct acpi_ec_smbus *smbus = sbs->smbus; | |
817 | int result = 0; | |
818 | s16 charger_status; | |
819 | ||
3f86b832 RT |
820 | result = acpi_sbs_smbus_read_word(smbus, ACPI_SBC_SMBUS_ADDR, 0x13, |
821 | &charger_status, NULL); | |
822 | ||
823 | if (result) { | |
824 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
825 | "acpi_sbs_smbus_read_word() failed\n")); | |
826 | goto end; | |
827 | } | |
828 | ||
829 | sbs->ac_present = (charger_status & 0x8000) >> 15; | |
830 | ||
831 | end: | |
832 | ||
635227ee | 833 | return result; |
3f86b832 RT |
834 | } |
835 | ||
836 | /* -------------------------------------------------------------------------- | |
837 | FS Interface (/proc/acpi) | |
838 | -------------------------------------------------------------------------- */ | |
839 | ||
840 | /* Generic Routines */ | |
841 | ||
842 | static int | |
843 | acpi_sbs_generic_add_fs(struct proc_dir_entry **dir, | |
844 | struct proc_dir_entry *parent_dir, | |
845 | char *dir_name, | |
846 | struct file_operations *info_fops, | |
847 | struct file_operations *state_fops, | |
848 | struct file_operations *alarm_fops, void *data) | |
849 | { | |
850 | struct proc_dir_entry *entry = NULL; | |
851 | ||
3f86b832 RT |
852 | if (!*dir) { |
853 | *dir = proc_mkdir(dir_name, parent_dir); | |
854 | if (!*dir) { | |
855 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
856 | "proc_mkdir() failed\n")); | |
635227ee | 857 | return -ENODEV; |
3f86b832 RT |
858 | } |
859 | (*dir)->owner = THIS_MODULE; | |
860 | } | |
861 | ||
862 | /* 'info' [R] */ | |
863 | if (info_fops) { | |
864 | entry = create_proc_entry(ACPI_SBS_FILE_INFO, S_IRUGO, *dir); | |
865 | if (!entry) { | |
866 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
867 | "create_proc_entry() failed\n")); | |
868 | } else { | |
869 | entry->proc_fops = info_fops; | |
870 | entry->data = data; | |
871 | entry->owner = THIS_MODULE; | |
872 | } | |
873 | } | |
874 | ||
875 | /* 'state' [R] */ | |
876 | if (state_fops) { | |
877 | entry = create_proc_entry(ACPI_SBS_FILE_STATE, S_IRUGO, *dir); | |
878 | if (!entry) { | |
879 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
880 | "create_proc_entry() failed\n")); | |
881 | } else { | |
882 | entry->proc_fops = state_fops; | |
883 | entry->data = data; | |
884 | entry->owner = THIS_MODULE; | |
885 | } | |
886 | } | |
887 | ||
888 | /* 'alarm' [R/W] */ | |
889 | if (alarm_fops) { | |
890 | entry = create_proc_entry(ACPI_SBS_FILE_ALARM, S_IRUGO, *dir); | |
891 | if (!entry) { | |
892 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
893 | "create_proc_entry() failed\n")); | |
894 | } else { | |
895 | entry->proc_fops = alarm_fops; | |
896 | entry->data = data; | |
897 | entry->owner = THIS_MODULE; | |
898 | } | |
899 | } | |
900 | ||
635227ee | 901 | return 0; |
3f86b832 RT |
902 | } |
903 | ||
904 | static void | |
905 | acpi_sbs_generic_remove_fs(struct proc_dir_entry **dir, | |
906 | struct proc_dir_entry *parent_dir) | |
907 | { | |
3f86b832 RT |
908 | |
909 | if (*dir) { | |
910 | remove_proc_entry(ACPI_SBS_FILE_INFO, *dir); | |
911 | remove_proc_entry(ACPI_SBS_FILE_STATE, *dir); | |
912 | remove_proc_entry(ACPI_SBS_FILE_ALARM, *dir); | |
913 | remove_proc_entry((*dir)->name, parent_dir); | |
914 | *dir = NULL; | |
915 | } | |
916 | ||
917 | } | |
918 | ||
919 | /* Smart Battery Interface */ | |
920 | ||
921 | static struct proc_dir_entry *acpi_battery_dir = NULL; | |
922 | ||
923 | static int acpi_battery_read_info(struct seq_file *seq, void *offset) | |
924 | { | |
50dd0969 | 925 | struct acpi_battery *battery = seq->private; |
3f86b832 RT |
926 | int cscale; |
927 | int result = 0; | |
928 | ||
3f86b832 | 929 | if (battery->sbs->zombie) { |
635227ee | 930 | return -ENODEV; |
3f86b832 RT |
931 | } |
932 | ||
933 | down(&sbs_sem); | |
934 | ||
935 | if (update_mode == REQUEST_UPDATE_MODE) { | |
936 | result = acpi_sbs_update_run(battery->sbs, DATA_TYPE_INFO); | |
937 | if (result) { | |
938 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
939 | "acpi_sbs_update_run() failed\n")); | |
940 | } | |
941 | } | |
942 | ||
943 | if (acpi_battery_is_present(battery)) { | |
944 | seq_printf(seq, "present: yes\n"); | |
945 | } else { | |
946 | seq_printf(seq, "present: no\n"); | |
947 | goto end; | |
948 | } | |
949 | ||
950 | if (battery->info.capacity_mode) { | |
951 | cscale = battery->info.vscale * battery->info.ipscale; | |
952 | } else { | |
953 | cscale = battery->info.ipscale; | |
954 | } | |
955 | seq_printf(seq, "design capacity: %i%s", | |
956 | battery->info.design_capacity * cscale, | |
957 | battery->info.capacity_mode ? "0 mWh\n" : " mAh\n"); | |
958 | ||
959 | seq_printf(seq, "last full capacity: %i%s", | |
960 | battery->info.full_charge_capacity * cscale, | |
961 | battery->info.capacity_mode ? "0 mWh\n" : " mAh\n"); | |
962 | ||
963 | seq_printf(seq, "battery technology: rechargeable\n"); | |
964 | ||
965 | seq_printf(seq, "design voltage: %i mV\n", | |
966 | battery->info.design_voltage * battery->info.vscale); | |
967 | ||
968 | seq_printf(seq, "design capacity warning: unknown\n"); | |
969 | seq_printf(seq, "design capacity low: unknown\n"); | |
970 | seq_printf(seq, "capacity granularity 1: unknown\n"); | |
971 | seq_printf(seq, "capacity granularity 2: unknown\n"); | |
972 | ||
973 | seq_printf(seq, "model number: %s\n", | |
974 | battery->info.device_name); | |
975 | ||
976 | seq_printf(seq, "serial number: %i\n", | |
977 | battery->info.serial_number); | |
978 | ||
979 | seq_printf(seq, "battery type: %s\n", | |
980 | battery->info.device_chemistry); | |
981 | ||
982 | seq_printf(seq, "OEM info: %s\n", | |
983 | battery->info.manufacturer_name); | |
984 | ||
985 | end: | |
986 | ||
987 | up(&sbs_sem); | |
988 | ||
635227ee | 989 | return result; |
3f86b832 RT |
990 | } |
991 | ||
992 | static int acpi_battery_info_open_fs(struct inode *inode, struct file *file) | |
993 | { | |
994 | return single_open(file, acpi_battery_read_info, PDE(inode)->data); | |
995 | } | |
996 | ||
997 | static int acpi_battery_read_state(struct seq_file *seq, void *offset) | |
998 | { | |
999 | struct acpi_battery *battery = (struct acpi_battery *)seq->private; | |
1000 | int result = 0; | |
1001 | int cscale; | |
1002 | int foo; | |
1003 | ||
3f86b832 | 1004 | if (battery->sbs->zombie) { |
635227ee | 1005 | return -ENODEV; |
3f86b832 RT |
1006 | } |
1007 | ||
1008 | down(&sbs_sem); | |
1009 | ||
1010 | if (update_mode == REQUEST_UPDATE_MODE) { | |
1011 | result = acpi_sbs_update_run(battery->sbs, DATA_TYPE_STATE); | |
1012 | if (result) { | |
1013 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1014 | "acpi_sbs_update_run() failed\n")); | |
1015 | } | |
1016 | } | |
1017 | ||
1018 | if (acpi_battery_is_present(battery)) { | |
1019 | seq_printf(seq, "present: yes\n"); | |
1020 | } else { | |
1021 | seq_printf(seq, "present: no\n"); | |
1022 | goto end; | |
1023 | } | |
1024 | ||
1025 | if (battery->info.capacity_mode) { | |
1026 | cscale = battery->info.vscale * battery->info.ipscale; | |
1027 | } else { | |
1028 | cscale = battery->info.ipscale; | |
1029 | } | |
1030 | ||
1031 | if (battery->state.battery_status & 0x0010) { | |
1032 | seq_printf(seq, "capacity state: critical\n"); | |
1033 | } else { | |
1034 | seq_printf(seq, "capacity state: ok\n"); | |
1035 | } | |
e6d0f562 VL |
1036 | |
1037 | foo = (s16) battery->state.amperage * battery->info.ipscale; | |
1038 | if (battery->info.capacity_mode) { | |
1039 | foo = foo * battery->info.design_voltage / 1000; | |
1040 | } | |
3f86b832 RT |
1041 | if (battery->state.amperage < 0) { |
1042 | seq_printf(seq, "charging state: discharging\n"); | |
e6d0f562 VL |
1043 | seq_printf(seq, "present rate: %d %s\n", |
1044 | -foo, battery->info.capacity_mode ? "mW" : "mA"); | |
3f86b832 RT |
1045 | } else if (battery->state.amperage > 0) { |
1046 | seq_printf(seq, "charging state: charging\n"); | |
e6d0f562 VL |
1047 | seq_printf(seq, "present rate: %d %s\n", |
1048 | foo, battery->info.capacity_mode ? "mW" : "mA"); | |
3f86b832 RT |
1049 | } else { |
1050 | seq_printf(seq, "charging state: charged\n"); | |
1051 | seq_printf(seq, "present rate: 0 %s\n", | |
1052 | battery->info.capacity_mode ? "mW" : "mA"); | |
1053 | } | |
1054 | ||
1055 | seq_printf(seq, "remaining capacity: %i%s", | |
1056 | battery->state.remaining_capacity * cscale, | |
1057 | battery->info.capacity_mode ? "0 mWh\n" : " mAh\n"); | |
1058 | ||
1059 | seq_printf(seq, "present voltage: %i mV\n", | |
1060 | battery->state.voltage * battery->info.vscale); | |
1061 | ||
1062 | end: | |
1063 | ||
1064 | up(&sbs_sem); | |
1065 | ||
635227ee | 1066 | return result; |
3f86b832 RT |
1067 | } |
1068 | ||
1069 | static int acpi_battery_state_open_fs(struct inode *inode, struct file *file) | |
1070 | { | |
1071 | return single_open(file, acpi_battery_read_state, PDE(inode)->data); | |
1072 | } | |
1073 | ||
1074 | static int acpi_battery_read_alarm(struct seq_file *seq, void *offset) | |
1075 | { | |
50dd0969 | 1076 | struct acpi_battery *battery = seq->private; |
3f86b832 RT |
1077 | int result = 0; |
1078 | int cscale; | |
1079 | ||
3f86b832 | 1080 | if (battery->sbs->zombie) { |
635227ee | 1081 | return -ENODEV; |
3f86b832 RT |
1082 | } |
1083 | ||
1084 | down(&sbs_sem); | |
1085 | ||
1086 | if (update_mode == REQUEST_UPDATE_MODE) { | |
1087 | result = acpi_sbs_update_run(battery->sbs, DATA_TYPE_ALARM); | |
1088 | if (result) { | |
1089 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1090 | "acpi_sbs_update_run() failed\n")); | |
1091 | } | |
1092 | } | |
1093 | ||
1094 | if (!acpi_battery_is_present(battery)) { | |
1095 | seq_printf(seq, "present: no\n"); | |
1096 | goto end; | |
1097 | } | |
1098 | ||
1099 | if (battery->info.capacity_mode) { | |
1100 | cscale = battery->info.vscale * battery->info.ipscale; | |
1101 | } else { | |
1102 | cscale = battery->info.ipscale; | |
1103 | } | |
1104 | ||
1105 | seq_printf(seq, "alarm: "); | |
1106 | if (battery->alarm.remaining_capacity) { | |
1107 | seq_printf(seq, "%i%s", | |
1108 | battery->alarm.remaining_capacity * cscale, | |
1109 | battery->info.capacity_mode ? "0 mWh\n" : " mAh\n"); | |
1110 | } else { | |
1111 | seq_printf(seq, "disabled\n"); | |
1112 | } | |
1113 | ||
1114 | end: | |
1115 | ||
1116 | up(&sbs_sem); | |
1117 | ||
635227ee | 1118 | return result; |
3f86b832 RT |
1119 | } |
1120 | ||
1121 | static ssize_t | |
1122 | acpi_battery_write_alarm(struct file *file, const char __user * buffer, | |
1123 | size_t count, loff_t * ppos) | |
1124 | { | |
50dd0969 JE |
1125 | struct seq_file *seq = file->private_data; |
1126 | struct acpi_battery *battery = seq->private; | |
3f86b832 RT |
1127 | char alarm_string[12] = { '\0' }; |
1128 | int result, old_alarm, new_alarm; | |
1129 | ||
3f86b832 | 1130 | if (battery->sbs->zombie) { |
635227ee | 1131 | return -ENODEV; |
3f86b832 RT |
1132 | } |
1133 | ||
1134 | down(&sbs_sem); | |
1135 | ||
1136 | if (!acpi_battery_is_present(battery)) { | |
1137 | result = -ENODEV; | |
1138 | goto end; | |
1139 | } | |
1140 | ||
1141 | if (count > sizeof(alarm_string) - 1) { | |
1142 | result = -EINVAL; | |
1143 | goto end; | |
1144 | } | |
1145 | ||
1146 | if (copy_from_user(alarm_string, buffer, count)) { | |
1147 | result = -EFAULT; | |
1148 | goto end; | |
1149 | } | |
1150 | ||
1151 | alarm_string[count] = 0; | |
1152 | ||
1153 | old_alarm = battery->alarm.remaining_capacity; | |
1154 | new_alarm = simple_strtoul(alarm_string, NULL, 0); | |
1155 | ||
1156 | result = acpi_battery_set_alarm(battery, new_alarm); | |
1157 | if (result) { | |
1158 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1159 | "acpi_battery_set_alarm() failed\n")); | |
50dd0969 | 1160 | acpi_battery_set_alarm(battery, old_alarm); |
3f86b832 RT |
1161 | goto end; |
1162 | } | |
1163 | result = acpi_battery_get_alarm(battery); | |
1164 | if (result) { | |
1165 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1166 | "acpi_battery_get_alarm() failed\n")); | |
50dd0969 | 1167 | acpi_battery_set_alarm(battery, old_alarm); |
3f86b832 RT |
1168 | goto end; |
1169 | } | |
1170 | ||
1171 | end: | |
1172 | up(&sbs_sem); | |
1173 | ||
1174 | if (result) { | |
635227ee | 1175 | return result; |
3f86b832 | 1176 | } else { |
635227ee | 1177 | return count; |
3f86b832 RT |
1178 | } |
1179 | } | |
1180 | ||
1181 | static int acpi_battery_alarm_open_fs(struct inode *inode, struct file *file) | |
1182 | { | |
1183 | return single_open(file, acpi_battery_read_alarm, PDE(inode)->data); | |
1184 | } | |
1185 | ||
1186 | static struct file_operations acpi_battery_info_fops = { | |
1187 | .open = acpi_battery_info_open_fs, | |
1188 | .read = seq_read, | |
1189 | .llseek = seq_lseek, | |
1190 | .release = single_release, | |
1191 | .owner = THIS_MODULE, | |
1192 | }; | |
1193 | ||
1194 | static struct file_operations acpi_battery_state_fops = { | |
1195 | .open = acpi_battery_state_open_fs, | |
1196 | .read = seq_read, | |
1197 | .llseek = seq_lseek, | |
1198 | .release = single_release, | |
1199 | .owner = THIS_MODULE, | |
1200 | }; | |
1201 | ||
1202 | static struct file_operations acpi_battery_alarm_fops = { | |
1203 | .open = acpi_battery_alarm_open_fs, | |
1204 | .read = seq_read, | |
1205 | .write = acpi_battery_write_alarm, | |
1206 | .llseek = seq_lseek, | |
1207 | .release = single_release, | |
1208 | .owner = THIS_MODULE, | |
1209 | }; | |
1210 | ||
1211 | /* Legacy AC Adapter Interface */ | |
1212 | ||
1213 | static struct proc_dir_entry *acpi_ac_dir = NULL; | |
1214 | ||
1215 | static int acpi_ac_read_state(struct seq_file *seq, void *offset) | |
1216 | { | |
50dd0969 | 1217 | struct acpi_sbs *sbs = seq->private; |
3f86b832 RT |
1218 | int result; |
1219 | ||
3f86b832 | 1220 | if (sbs->zombie) { |
635227ee | 1221 | return -ENODEV; |
3f86b832 RT |
1222 | } |
1223 | ||
1224 | down(&sbs_sem); | |
1225 | ||
1226 | if (update_mode == REQUEST_UPDATE_MODE) { | |
1227 | result = acpi_sbs_update_run(sbs, DATA_TYPE_AC_STATE); | |
1228 | if (result) { | |
1229 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1230 | "acpi_sbs_update_run() failed\n")); | |
1231 | } | |
1232 | } | |
1233 | ||
1234 | seq_printf(seq, "state: %s\n", | |
1235 | sbs->ac_present ? "on-line" : "off-line"); | |
1236 | ||
1237 | up(&sbs_sem); | |
1238 | ||
635227ee | 1239 | return 0; |
3f86b832 RT |
1240 | } |
1241 | ||
1242 | static int acpi_ac_state_open_fs(struct inode *inode, struct file *file) | |
1243 | { | |
1244 | return single_open(file, acpi_ac_read_state, PDE(inode)->data); | |
1245 | } | |
1246 | ||
1247 | static struct file_operations acpi_ac_state_fops = { | |
1248 | .open = acpi_ac_state_open_fs, | |
1249 | .read = seq_read, | |
1250 | .llseek = seq_lseek, | |
1251 | .release = single_release, | |
1252 | .owner = THIS_MODULE, | |
1253 | }; | |
1254 | ||
1255 | /* -------------------------------------------------------------------------- | |
1256 | Driver Interface | |
1257 | -------------------------------------------------------------------------- */ | |
1258 | ||
1259 | /* Smart Battery */ | |
1260 | ||
1261 | static int acpi_battery_add(struct acpi_sbs *sbs, int id) | |
1262 | { | |
1263 | int is_present; | |
1264 | int result; | |
1265 | char dir_name[32]; | |
1266 | struct acpi_battery *battery; | |
1267 | ||
3f86b832 RT |
1268 | battery = &sbs->battery[id]; |
1269 | ||
1270 | battery->alive = 0; | |
1271 | ||
1272 | battery->init_state = 0; | |
1273 | battery->id = id; | |
1274 | battery->sbs = sbs; | |
1275 | ||
1276 | result = acpi_battery_select(battery); | |
1277 | if (result) { | |
1278 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1279 | "acpi_battery_select() failed\n")); | |
1280 | goto end; | |
1281 | } | |
1282 | ||
1283 | result = acpi_battery_get_present(battery); | |
1284 | if (result) { | |
1285 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1286 | "acpi_battery_get_present() failed\n")); | |
1287 | goto end; | |
1288 | } | |
1289 | ||
1290 | is_present = acpi_battery_is_present(battery); | |
1291 | ||
1292 | if (is_present) { | |
1293 | result = acpi_battery_init(battery); | |
1294 | if (result) { | |
1295 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1296 | "acpi_battery_init() failed\n")); | |
1297 | goto end; | |
1298 | } | |
1299 | battery->init_state = 1; | |
1300 | } | |
1301 | ||
50dd0969 | 1302 | sprintf(dir_name, ACPI_BATTERY_DIR_NAME, id); |
3f86b832 RT |
1303 | |
1304 | result = acpi_sbs_generic_add_fs(&battery->battery_entry, | |
1305 | acpi_battery_dir, | |
1306 | dir_name, | |
1307 | &acpi_battery_info_fops, | |
1308 | &acpi_battery_state_fops, | |
1309 | &acpi_battery_alarm_fops, battery); | |
1310 | if (result) { | |
1311 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1312 | "acpi_sbs_generic_add_fs() failed\n")); | |
1313 | goto end; | |
1314 | } | |
1315 | battery->alive = 1; | |
1316 | ||
1317 | end: | |
635227ee | 1318 | return result; |
3f86b832 RT |
1319 | } |
1320 | ||
1321 | static void acpi_battery_remove(struct acpi_sbs *sbs, int id) | |
1322 | { | |
3f86b832 RT |
1323 | |
1324 | if (sbs->battery[id].battery_entry) { | |
1325 | acpi_sbs_generic_remove_fs(&(sbs->battery[id].battery_entry), | |
1326 | acpi_battery_dir); | |
1327 | } | |
1328 | } | |
1329 | ||
1330 | static int acpi_ac_add(struct acpi_sbs *sbs) | |
1331 | { | |
1332 | int result; | |
1333 | ||
3f86b832 RT |
1334 | result = acpi_ac_get_present(sbs); |
1335 | if (result) { | |
1336 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1337 | "acpi_ac_get_present() failed\n")); | |
1338 | goto end; | |
1339 | } | |
1340 | ||
1341 | result = acpi_sbs_generic_add_fs(&sbs->ac_entry, | |
1342 | acpi_ac_dir, | |
1343 | ACPI_AC_DIR_NAME, | |
1344 | NULL, &acpi_ac_state_fops, NULL, sbs); | |
1345 | if (result) { | |
1346 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1347 | "acpi_sbs_generic_add_fs() failed\n")); | |
1348 | goto end; | |
1349 | } | |
1350 | ||
1351 | end: | |
1352 | ||
635227ee | 1353 | return result; |
3f86b832 RT |
1354 | } |
1355 | ||
1356 | static void acpi_ac_remove(struct acpi_sbs *sbs) | |
1357 | { | |
3f86b832 RT |
1358 | |
1359 | if (sbs->ac_entry) { | |
1360 | acpi_sbs_generic_remove_fs(&sbs->ac_entry, acpi_ac_dir); | |
1361 | } | |
1362 | } | |
1363 | ||
1364 | static void acpi_sbs_update_queue_run(unsigned long data) | |
1365 | { | |
3f86b832 RT |
1366 | acpi_os_execute(OSL_GPE_HANDLER, acpi_sbs_update_queue, (void *)data); |
1367 | } | |
1368 | ||
1369 | static int acpi_sbs_update_run(struct acpi_sbs *sbs, int data_type) | |
1370 | { | |
1371 | struct acpi_battery *battery; | |
1372 | int result = 0; | |
1373 | int old_ac_present; | |
1374 | int old_battery_present; | |
1375 | int new_ac_present; | |
1376 | int new_battery_present; | |
1377 | int id; | |
1378 | char dir_name[32]; | |
1379 | int do_battery_init, do_ac_init; | |
1380 | s16 old_remaining_capacity; | |
1381 | ||
3f86b832 RT |
1382 | if (sbs->zombie) { |
1383 | goto end; | |
1384 | } | |
1385 | ||
1386 | old_ac_present = acpi_ac_is_present(sbs); | |
1387 | ||
1388 | result = acpi_ac_get_present(sbs); | |
1389 | if (result) { | |
1390 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1391 | "acpi_ac_get_present() failed\n")); | |
1392 | } | |
1393 | ||
1394 | new_ac_present = acpi_ac_is_present(sbs); | |
1395 | ||
1396 | do_ac_init = (old_ac_present != new_ac_present); | |
1397 | ||
1398 | if (data_type == DATA_TYPE_AC_STATE) { | |
1399 | goto end; | |
1400 | } | |
1401 | ||
1402 | for (id = 0; id < MAX_SBS_BAT; id++) { | |
1403 | battery = &sbs->battery[id]; | |
1404 | if (battery->alive == 0) { | |
1405 | continue; | |
1406 | } | |
1407 | ||
1408 | old_remaining_capacity = battery->state.remaining_capacity; | |
1409 | ||
1410 | old_battery_present = acpi_battery_is_present(battery); | |
1411 | ||
1412 | result = acpi_battery_select(battery); | |
1413 | if (result) { | |
1414 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1415 | "acpi_battery_select() failed\n")); | |
1416 | } | |
1417 | if (sbs->zombie) { | |
1418 | goto end; | |
1419 | } | |
1420 | ||
1421 | result = acpi_battery_get_present(battery); | |
1422 | if (result) { | |
1423 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1424 | "acpi_battery_get_present() failed\n")); | |
1425 | } | |
1426 | if (sbs->zombie) { | |
1427 | goto end; | |
1428 | } | |
1429 | ||
1430 | new_battery_present = acpi_battery_is_present(battery); | |
1431 | ||
1432 | do_battery_init = ((old_battery_present != new_battery_present) | |
1433 | && new_battery_present); | |
1434 | ||
1435 | if (sbs->zombie) { | |
1436 | goto end; | |
1437 | } | |
1438 | if (do_ac_init || do_battery_init || | |
1439 | update_info_mode || sbs->update_info_mode) { | |
1440 | if (sbs->update_info_mode) { | |
1441 | sbs->update_info_mode = 0; | |
1442 | } else { | |
1443 | sbs->update_info_mode = 1; | |
1444 | } | |
1445 | result = acpi_battery_init(battery); | |
1446 | if (result) { | |
1447 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1448 | "acpi_battery_init() " | |
1449 | "failed\n")); | |
1450 | } | |
1451 | } | |
1452 | if (data_type == DATA_TYPE_INFO) { | |
1453 | continue; | |
1454 | } | |
1455 | ||
1456 | if (sbs->zombie) { | |
1457 | goto end; | |
1458 | } | |
1459 | if (new_battery_present) { | |
1460 | result = acpi_battery_get_alarm(battery); | |
1461 | if (result) { | |
1462 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1463 | "acpi_battery_get_alarm() " | |
1464 | "failed\n")); | |
1465 | } | |
1466 | if (data_type == DATA_TYPE_ALARM) { | |
1467 | continue; | |
1468 | } | |
1469 | ||
1470 | result = acpi_battery_get_state(battery); | |
1471 | if (result) { | |
1472 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1473 | "acpi_battery_get_state() " | |
1474 | "failed\n")); | |
1475 | } | |
1476 | } | |
1477 | if (sbs->zombie) { | |
1478 | goto end; | |
1479 | } | |
1480 | if (data_type != DATA_TYPE_COMMON) { | |
1481 | continue; | |
1482 | } | |
1483 | ||
1484 | if (old_battery_present != new_battery_present) { | |
50dd0969 | 1485 | sprintf(dir_name, ACPI_BATTERY_DIR_NAME, id); |
3f86b832 RT |
1486 | result = acpi_sbs_generate_event(sbs->device, |
1487 | ACPI_SBS_BATTERY_NOTIFY_STATUS, | |
1488 | new_battery_present, | |
1489 | dir_name, | |
1490 | ACPI_BATTERY_CLASS); | |
1491 | if (result) { | |
1492 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1493 | "acpi_sbs_generate_event() " | |
1494 | "failed\n")); | |
1495 | } | |
1496 | } | |
1497 | if (old_remaining_capacity != battery->state.remaining_capacity) { | |
50dd0969 | 1498 | sprintf(dir_name, ACPI_BATTERY_DIR_NAME, id); |
3f86b832 RT |
1499 | result = acpi_sbs_generate_event(sbs->device, |
1500 | ACPI_SBS_BATTERY_NOTIFY_STATUS, | |
1501 | new_battery_present, | |
1502 | dir_name, | |
1503 | ACPI_BATTERY_CLASS); | |
1504 | if (result) { | |
1505 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1506 | "acpi_sbs_generate_event() failed\n")); | |
1507 | } | |
1508 | } | |
1509 | ||
1510 | } | |
1511 | if (sbs->zombie) { | |
1512 | goto end; | |
1513 | } | |
1514 | if (data_type != DATA_TYPE_COMMON) { | |
1515 | goto end; | |
1516 | } | |
1517 | ||
1518 | if (old_ac_present != new_ac_present) { | |
1519 | result = acpi_sbs_generate_event(sbs->device, | |
1520 | ACPI_SBS_AC_NOTIFY_STATUS, | |
1521 | new_ac_present, | |
1522 | ACPI_AC_DIR_NAME, | |
1523 | ACPI_AC_CLASS); | |
1524 | if (result) { | |
1525 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1526 | "acpi_sbs_generate_event() failed\n")); | |
1527 | } | |
1528 | } | |
1529 | ||
1530 | end: | |
635227ee | 1531 | return result; |
3f86b832 RT |
1532 | } |
1533 | ||
1534 | static void acpi_sbs_update_queue(void *data) | |
1535 | { | |
1536 | struct acpi_sbs *sbs = data; | |
1537 | unsigned long delay = -1; | |
1538 | int result; | |
1539 | ||
3f86b832 RT |
1540 | if (sbs->zombie) { |
1541 | goto end; | |
1542 | } | |
1543 | ||
1544 | result = acpi_sbs_update_run(sbs, DATA_TYPE_COMMON); | |
1545 | if (result) { | |
1546 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1547 | "acpi_sbs_update_run() failed\n")); | |
1548 | } | |
1549 | ||
1550 | if (sbs->zombie) { | |
1551 | goto end; | |
1552 | } | |
1553 | ||
1554 | if (update_mode == REQUEST_UPDATE_MODE) { | |
1555 | goto end; | |
1556 | } | |
1557 | ||
1558 | delay = jiffies + HZ * update_time; | |
1559 | sbs->update_timer.data = (unsigned long)data; | |
1560 | sbs->update_timer.function = acpi_sbs_update_queue_run; | |
1561 | sbs->update_timer.expires = delay; | |
1562 | add_timer(&sbs->update_timer); | |
1563 | end: | |
1564 | ; | |
1565 | } | |
1566 | ||
1567 | static int acpi_sbs_add(struct acpi_device *device) | |
1568 | { | |
1569 | struct acpi_sbs *sbs = NULL; | |
1570 | struct acpi_ec_hc *ec_hc = NULL; | |
1571 | int result, remove_result = 0; | |
1572 | unsigned long sbs_obj; | |
1573 | int id, cnt; | |
1574 | acpi_status status = AE_OK; | |
1575 | ||
36bcbec7 | 1576 | sbs = kzalloc(sizeof(struct acpi_sbs), GFP_KERNEL); |
3f86b832 RT |
1577 | if (!sbs) { |
1578 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "kmalloc() failed\n")); | |
635227ee | 1579 | return -ENOMEM; |
3f86b832 | 1580 | } |
3f86b832 RT |
1581 | |
1582 | cnt = 0; | |
1583 | while (cnt < 10) { | |
1584 | cnt++; | |
1585 | ec_hc = acpi_get_ec_hc(device); | |
1586 | if (ec_hc) { | |
1587 | break; | |
1588 | } | |
1589 | msleep(1000); | |
1590 | } | |
1591 | ||
1592 | if (!ec_hc) { | |
1593 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1594 | "acpi_get_ec_hc() failed: " | |
1595 | "NO driver found for EC HC SMBus\n")); | |
1596 | result = -ENODEV; | |
1597 | goto end; | |
1598 | } | |
1599 | ||
1600 | sbs->device = device; | |
1601 | sbs->smbus = ec_hc->smbus; | |
1602 | ||
1603 | strcpy(acpi_device_name(device), ACPI_SBS_DEVICE_NAME); | |
1604 | strcpy(acpi_device_class(device), ACPI_SBS_CLASS); | |
1605 | acpi_driver_data(device) = sbs; | |
1606 | ||
1607 | sbs->update_time = 0; | |
1608 | sbs->update_time2 = 0; | |
1609 | ||
1610 | result = acpi_ac_add(sbs); | |
1611 | if (result) { | |
1612 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "acpi_ac_add() failed\n")); | |
1613 | goto end; | |
1614 | } | |
1615 | result = acpi_evaluate_integer(device->handle, "_SBS", NULL, &sbs_obj); | |
1616 | if (ACPI_FAILURE(result)) { | |
1617 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1618 | "acpi_evaluate_integer() failed\n")); | |
1619 | result = -EIO; | |
1620 | goto end; | |
1621 | } | |
1622 | ||
1623 | if (sbs_obj > 0) { | |
1624 | result = acpi_sbsm_get_info(sbs); | |
1625 | if (result) { | |
1626 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1627 | "acpi_sbsm_get_info() failed\n")); | |
1628 | goto end; | |
1629 | } | |
1630 | sbs->sbsm_present = 1; | |
1631 | } | |
1632 | if (sbs->sbsm_present == 0) { | |
1633 | result = acpi_battery_add(sbs, 0); | |
1634 | if (result) { | |
1635 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1636 | "acpi_battery_add() failed\n")); | |
1637 | goto end; | |
1638 | } | |
1639 | } else { | |
1640 | for (id = 0; id < MAX_SBS_BAT; id++) { | |
1641 | if ((sbs->sbsm_batteries_supported & (1 << id))) { | |
1642 | result = acpi_battery_add(sbs, id); | |
1643 | if (result) { | |
1644 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1645 | "acpi_battery_add() " | |
1646 | "failed\n")); | |
1647 | goto end; | |
1648 | } | |
1649 | } | |
1650 | } | |
1651 | } | |
1652 | ||
1653 | sbs->handle = device->handle; | |
1654 | ||
1655 | init_timer(&sbs->update_timer); | |
1656 | if (update_mode == QUEUE_UPDATE_MODE) { | |
1657 | status = acpi_os_execute(OSL_GPE_HANDLER, | |
50dd0969 | 1658 | acpi_sbs_update_queue, sbs); |
3f86b832 RT |
1659 | if (status != AE_OK) { |
1660 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1661 | "acpi_os_execute() failed\n")); | |
1662 | } | |
1663 | } | |
1664 | sbs->update_time = update_time; | |
1665 | sbs->update_time2 = update_time2; | |
1666 | ||
1667 | printk(KERN_INFO PREFIX "%s [%s]\n", | |
1668 | acpi_device_name(device), acpi_device_bid(device)); | |
1669 | ||
1670 | end: | |
1671 | if (result) { | |
1672 | remove_result = acpi_sbs_remove(device, 0); | |
1673 | if (remove_result) { | |
1674 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1675 | "acpi_sbs_remove() failed\n")); | |
1676 | } | |
1677 | } | |
1678 | ||
635227ee | 1679 | return result; |
3f86b832 RT |
1680 | } |
1681 | ||
1682 | int acpi_sbs_remove(struct acpi_device *device, int type) | |
1683 | { | |
cece9014 | 1684 | struct acpi_sbs *sbs; |
3f86b832 RT |
1685 | int id; |
1686 | ||
963497c1 LV |
1687 | if (!device) { |
1688 | return -EINVAL; | |
1689 | } | |
1690 | ||
1691 | sbs = (struct acpi_sbs *)acpi_driver_data(device); | |
1692 | ||
1693 | if (!sbs) { | |
635227ee | 1694 | return -EINVAL; |
3f86b832 RT |
1695 | } |
1696 | ||
1697 | sbs->zombie = 1; | |
1698 | sbs->update_time = 0; | |
1699 | sbs->update_time2 = 0; | |
1700 | del_timer_sync(&sbs->update_timer); | |
1701 | acpi_os_wait_events_complete(NULL); | |
1702 | del_timer_sync(&sbs->update_timer); | |
1703 | ||
1704 | for (id = 0; id < MAX_SBS_BAT; id++) { | |
1705 | acpi_battery_remove(sbs, id); | |
1706 | } | |
1707 | ||
1708 | acpi_ac_remove(sbs); | |
1709 | ||
1710 | kfree(sbs); | |
1711 | ||
635227ee | 1712 | return 0; |
3f86b832 RT |
1713 | } |
1714 | ||
1715 | static int __init acpi_sbs_init(void) | |
1716 | { | |
1717 | int result = 0; | |
1718 | ||
b20d2aeb LB |
1719 | if (acpi_disabled) |
1720 | return -ENODEV; | |
1721 | ||
3f86b832 RT |
1722 | init_MUTEX(&sbs_sem); |
1723 | ||
1724 | if (capacity_mode != DEF_CAPACITY_UNIT | |
1725 | && capacity_mode != MAH_CAPACITY_UNIT | |
1726 | && capacity_mode != MWH_CAPACITY_UNIT) { | |
1727 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "acpi_sbs_init: " | |
1728 | "invalid capacity_mode = %d\n", | |
1729 | capacity_mode)); | |
635227ee | 1730 | return -EINVAL; |
3f86b832 RT |
1731 | } |
1732 | ||
1733 | acpi_ac_dir = acpi_lock_ac_dir(); | |
1734 | if (!acpi_ac_dir) { | |
1735 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1736 | "acpi_lock_ac_dir() failed\n")); | |
635227ee | 1737 | return -ENODEV; |
3f86b832 RT |
1738 | } |
1739 | ||
1740 | acpi_battery_dir = acpi_lock_battery_dir(); | |
1741 | if (!acpi_battery_dir) { | |
1742 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1743 | "acpi_lock_battery_dir() failed\n")); | |
635227ee | 1744 | return -ENODEV; |
3f86b832 RT |
1745 | } |
1746 | ||
1747 | result = acpi_bus_register_driver(&acpi_sbs_driver); | |
1748 | if (result < 0) { | |
1749 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1750 | "acpi_bus_register_driver() failed\n")); | |
635227ee | 1751 | return -ENODEV; |
3f86b832 RT |
1752 | } |
1753 | ||
635227ee | 1754 | return 0; |
3f86b832 RT |
1755 | } |
1756 | ||
1757 | static void __exit acpi_sbs_exit(void) | |
1758 | { | |
3f86b832 RT |
1759 | |
1760 | acpi_bus_unregister_driver(&acpi_sbs_driver); | |
1761 | ||
1762 | acpi_unlock_ac_dir(acpi_ac_dir); | |
1763 | acpi_ac_dir = NULL; | |
1764 | acpi_unlock_battery_dir(acpi_battery_dir); | |
1765 | acpi_battery_dir = NULL; | |
1766 | ||
635227ee | 1767 | return; |
3f86b832 RT |
1768 | } |
1769 | ||
1770 | module_init(acpi_sbs_init); | |
1771 | module_exit(acpi_sbs_exit); |