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ACPI: don't duplicate input events on netlink
[deliverable/linux.git] / drivers / acpi / sbs.c
CommitLineData
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>
6d15702c 33#include <linux/timer.h>
72206233 34#include <linux/jiffies.h>
3f86b832
RT		 35#include <linux/delay.h>
36
3f86b832
RT		 37#define ACPI_SBS_COMPONENT 0x00080000
38#define ACPI_SBS_CLASS "sbs"
39#define ACPI_AC_CLASS "ac_adapter"
40#define ACPI_BATTERY_CLASS "battery"
3f86b832
RT		 41#define ACPI_SBS_DEVICE_NAME "Smart Battery System"
42#define ACPI_SBS_FILE_INFO "info"
43#define ACPI_SBS_FILE_STATE "state"
44#define ACPI_SBS_FILE_ALARM "alarm"
45#define ACPI_BATTERY_DIR_NAME "BAT%i"
46#define ACPI_AC_DIR_NAME "AC0"
47#define ACPI_SBC_SMBUS_ADDR 0x9
48#define ACPI_SBSM_SMBUS_ADDR 0xa
49#define ACPI_SB_SMBUS_ADDR 0xb
50#define ACPI_SBS_AC_NOTIFY_STATUS 0x80
51#define ACPI_SBS_BATTERY_NOTIFY_STATUS 0x80
52#define ACPI_SBS_BATTERY_NOTIFY_INFO 0x81
53
54#define _COMPONENT ACPI_SBS_COMPONENT
55
f52fd66d 56ACPI_MODULE_NAME("sbs");
3f86b832
RT		 57
58MODULE_AUTHOR("Rich Townsend");
59MODULE_DESCRIPTION("Smart Battery System ACPI interface driver");
60MODULE_LICENSE("GPL");
61
6d15702c
VL		 62#define xmsleep(t) msleep(t)
63
64#define ACPI_EC_SMB_PRTCL 0x00 /* protocol, PEC */
65
66#define ACPI_EC_SMB_STS 0x01 /* status */
67#define ACPI_EC_SMB_ADDR 0x02 /* address */
68#define ACPI_EC_SMB_CMD 0x03 /* command */
69#define ACPI_EC_SMB_DATA 0x04 /* 32 data registers */
70#define ACPI_EC_SMB_BCNT 0x24 /* number of data bytes */
71
72#define ACPI_EC_SMB_STS_DONE 0x80
73#define ACPI_EC_SMB_STS_STATUS 0x1f
74
75#define ACPI_EC_SMB_PRTCL_WRITE 0x00
76#define ACPI_EC_SMB_PRTCL_READ 0x01
77#define ACPI_EC_SMB_PRTCL_WORD_DATA 0x08
78#define ACPI_EC_SMB_PRTCL_BLOCK_DATA 0x0a
79
80#define ACPI_EC_SMB_TRANSACTION_SLEEP 1
81#define ACPI_EC_SMB_ACCESS_SLEEP1 1
82#define ACPI_EC_SMB_ACCESS_SLEEP2 10
83
84#define DEF_CAPACITY_UNIT 3
85#define MAH_CAPACITY_UNIT 1
86#define MWH_CAPACITY_UNIT 2
87#define CAPACITY_UNIT DEF_CAPACITY_UNIT
88
89#define REQUEST_UPDATE_MODE 1
90#define QUEUE_UPDATE_MODE 2
91
92#define DATA_TYPE_COMMON 0
93#define DATA_TYPE_INFO 1
94#define DATA_TYPE_STATE 2
95#define DATA_TYPE_ALARM 3
96#define DATA_TYPE_AC_STATE 4
97
98extern struct proc_dir_entry *acpi_lock_ac_dir(void);
99extern struct proc_dir_entry *acpi_lock_battery_dir(void);
100extern void acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir);
101extern void acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir);
102
103#define MAX_SBS_BAT 4
104#define ACPI_SBS_BLOCK_MAX 32
105
106#define ACPI_SBS_SMBUS_READ 1
107#define ACPI_SBS_SMBUS_WRITE 2
108
109#define ACPI_SBS_WORD_DATA 1
110#define ACPI_SBS_BLOCK_DATA 2
111
72206233 112#define UPDATE_DELAY 10
3f86b832 113
72206233
VL		 114/* 0 - every time, > 0 - by update_time */
115static unsigned int update_time = 120;
3f86b832 116
72206233 117static unsigned int capacity_mode = CAPACITY_UNIT;
3f86b832 118
72206233
VL		 119module_param(update_time, uint, 0644);
120module_param(capacity_mode, uint, 0444);
3f86b832
RT		 121
122static int acpi_sbs_add(struct acpi_device *device);
123static int acpi_sbs_remove(struct acpi_device *device, int type);
72206233 124static int acpi_sbs_resume(struct acpi_device *device);
3f86b832 125
1ba90e3a
TR		 126static const struct acpi_device_id sbs_device_ids[] = {
127 {"ACPI0001", 0},
128 {"ACPI0005", 0},
129 {"", 0},
130};
131MODULE_DEVICE_TABLE(acpi, sbs_device_ids);
132
3f86b832 133static struct acpi_driver acpi_sbs_driver = {
c2b6705b 134 .name = "sbs",
3f86b832 135 .class = ACPI_SBS_CLASS,
1ba90e3a 136 .ids = sbs_device_ids,
3f86b832
RT		 137 .ops = {
138 .add = acpi_sbs_add,
139 .remove = acpi_sbs_remove,
72206233 140 .resume = acpi_sbs_resume,
3f86b832
RT		 141 },
142};
143
72206233
VL		 144struct acpi_ac {
145 int ac_present;
146};
147
3f86b832
RT		 148struct acpi_battery_info {
149 int capacity_mode;
150 s16 full_charge_capacity;
151 s16 design_capacity;
152 s16 design_voltage;
153 int vscale;
154 int ipscale;
155 s16 serial_number;
6d15702c
VL		 156 char manufacturer_name[ACPI_SBS_BLOCK_MAX + 3];
157 char device_name[ACPI_SBS_BLOCK_MAX + 3];
158 char device_chemistry[ACPI_SBS_BLOCK_MAX + 3];
3f86b832
RT		 159};
160
161struct acpi_battery_state {
162 s16 voltage;
163 s16 amperage;
164 s16 remaining_capacity;
72206233 165 s16 battery_state;
3f86b832
RT		 166};
167
168struct acpi_battery_alarm {
169 s16 remaining_capacity;
170};
171
172struct acpi_battery {
173 int alive;
3f86b832
RT		 174 int id;
175 int init_state;
72206233 176 int battery_present;
3f86b832
RT		 177 struct acpi_sbs *sbs;
178 struct acpi_battery_info info;
179 struct acpi_battery_state state;
180 struct acpi_battery_alarm alarm;
181 struct proc_dir_entry *battery_entry;
182};
183
184struct acpi_sbs {
6d15702c 185 int base;
3f86b832 186 struct acpi_device *device;
72206233 187 struct mutex mutex;
3f86b832
RT		 188 int sbsm_present;
189 int sbsm_batteries_supported;
3f86b832 190 struct proc_dir_entry *ac_entry;
72206233 191 struct acpi_ac ac;
3f86b832 192 struct acpi_battery battery[MAX_SBS_BAT];
3f86b832 193 int zombie;
3f86b832 194 struct timer_list update_timer;
72206233
VL		 195 int run_cnt;
196 int update_proc_flg;
3f86b832
RT		 197};
198
72206233
VL		 199static int acpi_sbs_update_run(struct acpi_sbs *sbs, int id, int data_type);
200static void acpi_sbs_update_time(void *data);
201
6d15702c
VL		 202union sbs_rw_data {
203 u16 word;
204 u8 block[ACPI_SBS_BLOCK_MAX + 2];
205};
206
207static int acpi_ec_sbs_access(struct acpi_sbs *sbs, u16 addr,
208 char read_write, u8 command, int size,
209 union sbs_rw_data *data);
3f86b832
RT		 210
211/* --------------------------------------------------------------------------
212 SMBus Communication
213 -------------------------------------------------------------------------- */
214
6d15702c 215static int acpi_ec_sbs_read(struct acpi_sbs *sbs, u8 address, u8 * data)
3f86b832 216{
6d15702c
VL		 217 u8 val;
218 int err;
3f86b832 219
6d15702c
VL		 220 err = ec_read(sbs->base + address, &val);
221 if (!err) {
222 *data = val;
223 }
224 xmsleep(ACPI_EC_SMB_TRANSACTION_SLEEP);
225 return (err);
226}
3f86b832 227
6d15702c
VL		 228static int acpi_ec_sbs_write(struct acpi_sbs *sbs, u8 address, u8 data)
229{
230 int err;
3f86b832 231
6d15702c
VL		 232 err = ec_write(sbs->base + address, data);
233 return (err);
234}
3f86b832 235
6d15702c
VL		 236static int
237acpi_ec_sbs_access(struct acpi_sbs *sbs, u16 addr,
238 char read_write, u8 command, int size,
239 union sbs_rw_data *data)
240{
241 unsigned char protocol, len = 0, temp[2] = { 0, 0 };
242 int i;
243
244 if (read_write == ACPI_SBS_SMBUS_READ) {
245 protocol = ACPI_EC_SMB_PRTCL_READ;
246 } else {
247 protocol = ACPI_EC_SMB_PRTCL_WRITE;
248 }
249
250 switch (size) {
251
252 case ACPI_SBS_WORD_DATA:
253 acpi_ec_sbs_write(sbs, ACPI_EC_SMB_CMD, command);
254 if (read_write == ACPI_SBS_SMBUS_WRITE) {
255 acpi_ec_sbs_write(sbs, ACPI_EC_SMB_DATA, data->word);
256 acpi_ec_sbs_write(sbs, ACPI_EC_SMB_DATA + 1,
257 data->word >> 8);
258 }
259 protocol |= ACPI_EC_SMB_PRTCL_WORD_DATA;
3f86b832 260 break;
6d15702c
VL		 261 case ACPI_SBS_BLOCK_DATA:
262 acpi_ec_sbs_write(sbs, ACPI_EC_SMB_CMD, command);
263 if (read_write == ACPI_SBS_SMBUS_WRITE) {
264 len = min_t(u8, data->block[0], 32);
265 acpi_ec_sbs_write(sbs, ACPI_EC_SMB_BCNT, len);
266 for (i = 0; i < len; i++)
267 acpi_ec_sbs_write(sbs, ACPI_EC_SMB_DATA + i,
268 data->block[i + 1]);
269 }
270 protocol |= ACPI_EC_SMB_PRTCL_BLOCK_DATA;
3f86b832 271 break;
6d15702c
VL		 272 default:
273 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
6845118b 274 "unsupported transaction %d", size));
6d15702c
VL		 275 return (-1);
276 }
277
278 acpi_ec_sbs_write(sbs, ACPI_EC_SMB_ADDR, addr << 1);
279 acpi_ec_sbs_write(sbs, ACPI_EC_SMB_PRTCL, protocol);
280
281 acpi_ec_sbs_read(sbs, ACPI_EC_SMB_STS, temp);
282
283 if (~temp[0] & ACPI_EC_SMB_STS_DONE) {
284 xmsleep(ACPI_EC_SMB_ACCESS_SLEEP1);
285 acpi_ec_sbs_read(sbs, ACPI_EC_SMB_STS, temp);
286 }
287 if (~temp[0] & ACPI_EC_SMB_STS_DONE) {
288 xmsleep(ACPI_EC_SMB_ACCESS_SLEEP2);
289 acpi_ec_sbs_read(sbs, ACPI_EC_SMB_STS, temp);
290 }
291 if ((~temp[0] & ACPI_EC_SMB_STS_DONE)
292 || (temp[0] & ACPI_EC_SMB_STS_STATUS)) {
293 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
6845118b 294 "transaction %d error", size));
6d15702c
VL		 295 return (-1);
296 }
297
298 if (read_write == ACPI_SBS_SMBUS_WRITE) {
299 return (0);
300 }
301
302 switch (size) {
303
304 case ACPI_SBS_WORD_DATA:
305 acpi_ec_sbs_read(sbs, ACPI_EC_SMB_DATA, temp);
306 acpi_ec_sbs_read(sbs, ACPI_EC_SMB_DATA + 1, temp + 1);
307 data->word = (temp[1] << 8) | temp[0];
3f86b832 308 break;
6d15702c
VL		 309
310 case ACPI_SBS_BLOCK_DATA:
311 len = 0;
312 acpi_ec_sbs_read(sbs, ACPI_EC_SMB_BCNT, &len);
313 len = min_t(u8, len, 32);
314 for (i = 0; i < len; i++)
315 acpi_ec_sbs_read(sbs, ACPI_EC_SMB_DATA + i,
316 data->block + i + 1);
317 data->block[0] = len;
3f86b832
RT		 318 break;
319 default:
6d15702c 320 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
6845118b 321 "unsupported transaction %d", size));
6d15702c 322 return (-1);
3f86b832 323 }
6d15702c
VL		 324
325 return (0);
3f86b832
RT		 326}
327
328static int
6d15702c 329acpi_sbs_read_word(struct acpi_sbs *sbs, int addr, int func, u16 * word)
3f86b832 330{
6d15702c 331 union sbs_rw_data data;
3f86b832 332 int result = 0;
3f86b832 333
6d15702c
VL		 334 result = acpi_ec_sbs_access(sbs, addr,
335 ACPI_SBS_SMBUS_READ, func,
336 ACPI_SBS_WORD_DATA, &data);
337 if (result) {
6845118b
VL		 338 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
339 "acpi_ec_sbs_access() failed"));
6d15702c
VL		 340 } else {
341 *word = data.word;
3f86b832
RT		 342 }
343
635227ee 344 return result;
3f86b832
RT		 345}
346
347static int
6d15702c 348acpi_sbs_read_str(struct acpi_sbs *sbs, int addr, int func, char *str)
3f86b832 349{
6d15702c 350 union sbs_rw_data data;
3f86b832 351 int result = 0;
3f86b832 352
6d15702c
VL		 353 result = acpi_ec_sbs_access(sbs, addr,
354 ACPI_SBS_SMBUS_READ, func,
355 ACPI_SBS_BLOCK_DATA, &data);
356 if (result) {
6845118b
VL		 357 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
358 "acpi_ec_sbs_access() failed"));
6d15702c
VL		 359 } else {
360 strncpy(str, (const char *)data.block + 1, data.block[0]);
361 str[data.block[0]] = 0;
3f86b832
RT		 362 }
363
635227ee 364 return result;
3f86b832
RT		 365}
366
367static int
6d15702c 368acpi_sbs_write_word(struct acpi_sbs *sbs, int addr, int func, int word)
3f86b832 369{
6d15702c 370 union sbs_rw_data data;
3f86b832 371 int result = 0;
3f86b832
RT		 372
373 data.word = word;
374
6d15702c
VL		 375 result = acpi_ec_sbs_access(sbs, addr,
376 ACPI_SBS_SMBUS_WRITE, func,
377 ACPI_SBS_WORD_DATA, &data);
378 if (result) {
6845118b
VL		 379 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
380 "acpi_ec_sbs_access() failed"));
3f86b832
RT		 381 }
382
635227ee 383 return result;
3f86b832
RT		 384}
385
72206233
VL		 386static int sbs_zombie(struct acpi_sbs *sbs)
387{
388 return (sbs->zombie);
389}
390
391static int sbs_mutex_lock(struct acpi_sbs *sbs)
392{
393 if (sbs_zombie(sbs)) {
394 return -ENODEV;
395 }
396 mutex_lock(&sbs->mutex);
397 return 0;
398}
399
400static void sbs_mutex_unlock(struct acpi_sbs *sbs)
401{
402 mutex_unlock(&sbs->mutex);
403}
404
3f86b832
RT		 405/* --------------------------------------------------------------------------
406 Smart Battery System Management
407 -------------------------------------------------------------------------- */
408
72206233
VL		 409static int acpi_check_update_proc(struct acpi_sbs *sbs)
410{
411 acpi_status status = AE_OK;
412
413 if (update_time == 0) {
414 sbs->update_proc_flg = 0;
415 return 0;
416 }
417 if (sbs->update_proc_flg == 0) {
418 status = acpi_os_execute(OSL_GPE_HANDLER,
419 acpi_sbs_update_time, sbs);
420 if (status != AE_OK) {
421 ACPI_EXCEPTION((AE_INFO, status,
422 "acpi_os_execute() failed"));
423 return 1;
424 }
425 sbs->update_proc_flg = 1;
426 }
427 return 0;
428}
3f86b832
RT		 429
430static int acpi_sbs_generate_event(struct acpi_device *device,
431 int event, int state, char *bid, char *class)
432{
433 char bid_saved[5];
434 char class_saved[20];
435 int result = 0;
436
3f86b832
RT		 437 strcpy(bid_saved, acpi_device_bid(device));
438 strcpy(class_saved, acpi_device_class(device));
439
440 strcpy(acpi_device_bid(device), bid);
441 strcpy(acpi_device_class(device), class);
442
443 result = acpi_bus_generate_event(device, event, state);
444
445 strcpy(acpi_device_bid(device), bid_saved);
446 strcpy(acpi_device_class(device), class_saved);
447
962ce8ca 448 acpi_bus_generate_netlink_event(class, bid, event, state);
635227ee 449 return result;
3f86b832
RT		 450}
451
452static int acpi_battery_get_present(struct acpi_battery *battery)
453{
454 s16 state;
455 int result = 0;
456 int is_present = 0;
457
6d15702c
VL		 458 result = acpi_sbs_read_word(battery->sbs,
459 ACPI_SBSM_SMBUS_ADDR, 0x01, &state);
3f86b832 460 if (result) {
6845118b
VL		 461 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
462 "acpi_sbs_read_word() failed"));
3f86b832
RT		 463 }
464 if (!result) {
465 is_present = (state & 0x000f) & (1 << battery->id);
466 }
467 battery->battery_present = is_present;
468
635227ee 469 return result;
3f86b832
RT		 470}
471
3f86b832
RT		 472static int acpi_battery_select(struct acpi_battery *battery)
473{
6d15702c 474 struct acpi_sbs *sbs = battery->sbs;
3f86b832
RT		 475 int result = 0;
476 s16 state;
477 int foo;
478
72206233 479 if (sbs->sbsm_present) {
3f86b832
RT		 480
481 /* Take special care not to knobble other nibbles of
482 * state (aka selector_state), since
483 * it causes charging to halt on SBSELs */
484
485 result =
6d15702c 486 acpi_sbs_read_word(sbs, ACPI_SBSM_SMBUS_ADDR, 0x01, &state);
3f86b832 487 if (result) {
6845118b
VL		 488 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
489 "acpi_sbs_read_word() failed"));
3f86b832
RT		 490 goto end;
491 }
492
493 foo = (state & 0x0fff) | (1 << (battery->id + 12));
494 result =
6d15702c 495 acpi_sbs_write_word(sbs, ACPI_SBSM_SMBUS_ADDR, 0x01, foo);
3f86b832 496 if (result) {
6845118b
VL		 497 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
498 "acpi_sbs_write_word() failed"));
3f86b832
RT		 499 goto end;
500 }
501 }
502
503 end:
635227ee 504 return result;
3f86b832
RT		 505}
506
507static int acpi_sbsm_get_info(struct acpi_sbs *sbs)
508{
3f86b832
RT		 509 int result = 0;
510 s16 battery_system_info;
511
6d15702c
VL		 512 result = acpi_sbs_read_word(sbs, ACPI_SBSM_SMBUS_ADDR, 0x04,
513 &battery_system_info);
3f86b832 514 if (result) {
6845118b
VL		 515 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
516 "acpi_sbs_read_word() failed"));
3f86b832
RT		 517 goto end;
518 }
addad454 519 sbs->sbsm_present = 1;
3f86b832
RT		 520 sbs->sbsm_batteries_supported = battery_system_info & 0x000f;
521
522 end:
523
635227ee 524 return result;
3f86b832
RT		 525}
526
527static int acpi_battery_get_info(struct acpi_battery *battery)
528{
6d15702c 529 struct acpi_sbs *sbs = battery->sbs;
3f86b832
RT		 530 int result = 0;
531 s16 battery_mode;
532 s16 specification_info;
533
6d15702c
VL		 534 result = acpi_sbs_read_word(sbs, ACPI_SB_SMBUS_ADDR, 0x03,
535 &battery_mode);
3f86b832 536 if (result) {
6845118b
VL		 537 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
538 "acpi_sbs_read_word() failed"));
3f86b832
RT		 539 goto end;
540 }
541 battery->info.capacity_mode = (battery_mode & 0x8000) >> 15;
542
6d15702c
VL		 543 result = acpi_sbs_read_word(sbs, ACPI_SB_SMBUS_ADDR, 0x10,
544 &battery->info.full_charge_capacity);
3f86b832 545 if (result) {
6845118b
VL		 546 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
547 "acpi_sbs_read_word() failed"));
3f86b832
RT		 548 goto end;
549 }
550
6d15702c
VL		 551 result = acpi_sbs_read_word(sbs, ACPI_SB_SMBUS_ADDR, 0x18,
552 &battery->info.design_capacity);
3f86b832
RT		 553
554 if (result) {
72206233
VL		 555 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
556 "acpi_sbs_read_word() failed"));
3f86b832
RT		 557 goto end;
558 }
559
6d15702c
VL		 560 result = acpi_sbs_read_word(sbs, ACPI_SB_SMBUS_ADDR, 0x19,
561 &battery->info.design_voltage);
3f86b832 562 if (result) {
6845118b
VL		 563 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
564 "acpi_sbs_read_word() failed"));
3f86b832
RT		 565 goto end;
566 }
567
6d15702c
VL		 568 result = acpi_sbs_read_word(sbs, ACPI_SB_SMBUS_ADDR, 0x1a,
569 &specification_info);
3f86b832 570 if (result) {
6845118b
VL		 571 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
572 "acpi_sbs_read_word() failed"));
3f86b832
RT		 573 goto end;
574 }
575
576 switch ((specification_info & 0x0f00) >> 8) {
577 case 1:
578 battery->info.vscale = 10;
579 break;
580 case 2:
581 battery->info.vscale = 100;
582 break;
583 case 3:
584 battery->info.vscale = 1000;
585 break;
586 default:
587 battery->info.vscale = 1;
588 }
589
590 switch ((specification_info & 0xf000) >> 12) {
591 case 1:
592 battery->info.ipscale = 10;
593 break;
594 case 2:
595 battery->info.ipscale = 100;
596 break;
597 case 3:
598 battery->info.ipscale = 1000;
599 break;
600 default:
601 battery->info.ipscale = 1;
602 }
603
6d15702c
VL		 604 result = acpi_sbs_read_word(sbs, ACPI_SB_SMBUS_ADDR, 0x1c,
605 &battery->info.serial_number);
3f86b832 606 if (result) {
72206233
VL		 607 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
608 "acpi_sbs_read_word() failed"));
3f86b832
RT		 609 goto end;
610 }
611
6d15702c
VL		 612 result = acpi_sbs_read_str(sbs, ACPI_SB_SMBUS_ADDR, 0x20,
613 battery->info.manufacturer_name);
3f86b832 614 if (result) {
6845118b
VL		 615 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
616 "acpi_sbs_read_str() failed"));
3f86b832
RT		 617 goto end;
618 }
619
6d15702c
VL		 620 result = acpi_sbs_read_str(sbs, ACPI_SB_SMBUS_ADDR, 0x21,
621 battery->info.device_name);
3f86b832 622 if (result) {
6845118b
VL		 623 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
624 "acpi_sbs_read_str() failed"));
3f86b832
RT		 625 goto end;
626 }
627
6d15702c
VL		 628 result = acpi_sbs_read_str(sbs, ACPI_SB_SMBUS_ADDR, 0x22,
629 battery->info.device_chemistry);
3f86b832 630 if (result) {
6845118b
VL		 631 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
632 "acpi_sbs_read_str() failed"));
3f86b832
RT		 633 goto end;
634 }
635
636 end:
635227ee 637 return result;
3f86b832
RT		 638}
639
3f86b832
RT		 640static int acpi_battery_get_state(struct acpi_battery *battery)
641{
6d15702c 642 struct acpi_sbs *sbs = battery->sbs;
3f86b832
RT		 643 int result = 0;
644
6d15702c
VL		 645 result = acpi_sbs_read_word(sbs, ACPI_SB_SMBUS_ADDR, 0x09,
646 &battery->state.voltage);
3f86b832 647 if (result) {
6845118b
VL		 648 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
649 "acpi_sbs_read_word() failed"));
3f86b832
RT		 650 goto end;
651 }
652
6d15702c
VL		 653 result = acpi_sbs_read_word(sbs, ACPI_SB_SMBUS_ADDR, 0x0a,
654 &battery->state.amperage);
3f86b832 655 if (result) {
6845118b
VL		 656 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
657 "acpi_sbs_read_word() failed"));
3f86b832
RT		 658 goto end;
659 }
660
6d15702c
VL		 661 result = acpi_sbs_read_word(sbs, ACPI_SB_SMBUS_ADDR, 0x0f,
662 &battery->state.remaining_capacity);
3f86b832 663 if (result) {
6845118b
VL		 664 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
665 "acpi_sbs_read_word() failed"));
3f86b832
RT		 666 goto end;
667 }
668
6d15702c 669 result = acpi_sbs_read_word(sbs, ACPI_SB_SMBUS_ADDR, 0x16,
72206233 670 &battery->state.battery_state);
3f86b832 671 if (result) {
6845118b
VL		 672 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
673 "acpi_sbs_read_word() failed"));
3f86b832
RT		 674 goto end;
675 }
676
3f86b832 677 end:
635227ee 678 return result;
3f86b832
RT		 679}
680
681static int acpi_battery_get_alarm(struct acpi_battery *battery)
682{
6d15702c 683 struct acpi_sbs *sbs = battery->sbs;
3f86b832
RT		 684 int result = 0;
685
6d15702c
VL		 686 result = acpi_sbs_read_word(sbs, ACPI_SB_SMBUS_ADDR, 0x01,
687 &battery->alarm.remaining_capacity);
3f86b832 688 if (result) {
6845118b
VL		 689 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
690 "acpi_sbs_read_word() failed"));
3f86b832
RT		 691 goto end;
692 }
693
3f86b832
RT		 694 end:
695
635227ee 696 return result;
3f86b832
RT		 697}
698
699static int acpi_battery_set_alarm(struct acpi_battery *battery,
700 unsigned long alarm)
701{
6d15702c 702 struct acpi_sbs *sbs = battery->sbs;
3f86b832
RT		 703 int result = 0;
704 s16 battery_mode;
705 int foo;
706
3f86b832
RT		 707 result = acpi_battery_select(battery);
708 if (result) {
6845118b
VL		 709 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
710 "acpi_battery_select() failed"));
3f86b832
RT		 711 goto end;
712 }
713
714 /* If necessary, enable the alarm */
715
716 if (alarm > 0) {
717 result =
6d15702c
VL		 718 acpi_sbs_read_word(sbs, ACPI_SB_SMBUS_ADDR, 0x03,
719 &battery_mode);
3f86b832 720 if (result) {
6845118b
VL		 721 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
722 "acpi_sbs_read_word() failed"));
3f86b832
RT		 723 goto end;
724 }
725
726 result =
6d15702c
VL		 727 acpi_sbs_write_word(sbs, ACPI_SB_SMBUS_ADDR, 0x01,
728 battery_mode & 0xbfff);
3f86b832 729 if (result) {
6845118b
VL		 730 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
731 "acpi_sbs_write_word() failed"));
3f86b832
RT		 732 goto end;
733 }
734 }
735
736 foo = alarm / (battery->info.capacity_mode ? 10 : 1);
6d15702c 737 result = acpi_sbs_write_word(sbs, ACPI_SB_SMBUS_ADDR, 0x01, foo);
3f86b832 738 if (result) {
6845118b
VL		 739 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
740 "acpi_sbs_write_word() failed"));
3f86b832
RT		 741 goto end;
742 }
743
744 end:
745
635227ee 746 return result;
3f86b832
RT		 747}
748
749static int acpi_battery_set_mode(struct acpi_battery *battery)
750{
72206233 751 struct acpi_sbs *sbs = battery->sbs;
3f86b832
RT		 752 int result = 0;
753 s16 battery_mode;
754
3f86b832
RT		 755 if (capacity_mode == DEF_CAPACITY_UNIT) {
756 goto end;
757 }
758
72206233 759 result = acpi_sbs_read_word(sbs,
6d15702c 760 ACPI_SB_SMBUS_ADDR, 0x03, &battery_mode);
3f86b832 761 if (result) {
6845118b
VL		 762 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
763 "acpi_sbs_read_word() failed"));
3f86b832
RT		 764 goto end;
765 }
766
767 if (capacity_mode == MAH_CAPACITY_UNIT) {
768 battery_mode &= 0x7fff;
769 } else {
770 battery_mode |= 0x8000;
771 }
72206233 772 result = acpi_sbs_write_word(sbs,
6d15702c 773 ACPI_SB_SMBUS_ADDR, 0x03, battery_mode);
3f86b832 774 if (result) {
6845118b
VL		 775 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
776 "acpi_sbs_write_word() failed"));
3f86b832
RT		 777 goto end;
778 }
779
72206233 780 result = acpi_sbs_read_word(sbs,
6d15702c 781 ACPI_SB_SMBUS_ADDR, 0x03, &battery_mode);
3f86b832 782 if (result) {
6845118b
VL		 783 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
784 "acpi_sbs_read_word() failed"));
3f86b832
RT		 785 goto end;
786 }
787
788 end:
635227ee 789 return result;
3f86b832
RT		 790}
791
792static int acpi_battery_init(struct acpi_battery *battery)
793{
794 int result = 0;
795
3f86b832
RT		 796 result = acpi_battery_select(battery);
797 if (result) {
6845118b 798 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
72206233 799 "acpi_battery_select() failed"));
3f86b832
RT		 800 goto end;
801 }
802
803 result = acpi_battery_set_mode(battery);
804 if (result) {
6845118b
VL		 805 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
806 "acpi_battery_set_mode() failed"));
3f86b832
RT		 807 goto end;
808 }
809
810 result = acpi_battery_get_info(battery);
811 if (result) {
6845118b
VL		 812 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
813 "acpi_battery_get_info() failed"));
3f86b832
RT		 814 goto end;
815 }
816
817 result = acpi_battery_get_state(battery);
818 if (result) {
6845118b
VL		 819 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
820 "acpi_battery_get_state() failed"));
3f86b832
RT		 821 goto end;
822 }
823
824 result = acpi_battery_get_alarm(battery);
825 if (result) {
6845118b
VL		 826 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
827 "acpi_battery_get_alarm() failed"));
3f86b832
RT		 828 goto end;
829 }
830
831 end:
635227ee 832 return result;
3f86b832
RT		 833}
834
835static int acpi_ac_get_present(struct acpi_sbs *sbs)
836{
3f86b832
RT		 837 int result = 0;
838 s16 charger_status;
839
6d15702c
VL		 840 result = acpi_sbs_read_word(sbs, ACPI_SBC_SMBUS_ADDR, 0x13,
841 &charger_status);
3f86b832
RT		 842
843 if (result) {
6845118b
VL		 844 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
845 "acpi_sbs_read_word() failed"));
3f86b832
RT		 846 goto end;
847 }
848
72206233 849 sbs->ac.ac_present = (charger_status & 0x8000) >> 15;
3f86b832
RT		 850
851 end:
852
635227ee 853 return result;
3f86b832
RT		 854}
855
856/* --------------------------------------------------------------------------
857 FS Interface (/proc/acpi)
858 -------------------------------------------------------------------------- */
859
860/* Generic Routines */
861
862static int
863acpi_sbs_generic_add_fs(struct proc_dir_entry **dir,
864 struct proc_dir_entry *parent_dir,
865 char *dir_name,
866 struct file_operations *info_fops,
867 struct file_operations *state_fops,
868 struct file_operations *alarm_fops, void *data)
869{
870 struct proc_dir_entry *entry = NULL;
871
3f86b832
RT		 872 if (!*dir) {
873 *dir = proc_mkdir(dir_name, parent_dir);
874 if (!*dir) {
6845118b
VL		 875 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
876 "proc_mkdir() failed"));
635227ee 877 return -ENODEV;
3f86b832
RT		 878 }
879 (*dir)->owner = THIS_MODULE;
880 }
881
882 /* 'info' [R] */
883 if (info_fops) {
884 entry = create_proc_entry(ACPI_SBS_FILE_INFO, S_IRUGO, *dir);
885 if (!entry) {
6845118b
VL		 886 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
887 "create_proc_entry() failed"));
3f86b832
RT		 888 } else {
889 entry->proc_fops = info_fops;
890 entry->data = data;
891 entry->owner = THIS_MODULE;
892 }
893 }
894
895 /* 'state' [R] */
896 if (state_fops) {
897 entry = create_proc_entry(ACPI_SBS_FILE_STATE, S_IRUGO, *dir);
898 if (!entry) {
6845118b
VL		 899 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
900 "create_proc_entry() failed"));
3f86b832
RT		 901 } else {
902 entry->proc_fops = state_fops;
903 entry->data = data;
904 entry->owner = THIS_MODULE;
905 }
906 }
907
908 /* 'alarm' [R/W] */
909 if (alarm_fops) {
910 entry = create_proc_entry(ACPI_SBS_FILE_ALARM, S_IRUGO, *dir);
911 if (!entry) {
6845118b
VL		 912 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
913 "create_proc_entry() failed"));
3f86b832
RT		 914 } else {
915 entry->proc_fops = alarm_fops;
916 entry->data = data;
917 entry->owner = THIS_MODULE;
918 }
919 }
920
635227ee 921 return 0;
3f86b832
RT		 922}
923
924static void
925acpi_sbs_generic_remove_fs(struct proc_dir_entry **dir,
926 struct proc_dir_entry *parent_dir)
927{
3f86b832
RT		 928
929 if (*dir) {
930 remove_proc_entry(ACPI_SBS_FILE_INFO, *dir);
931 remove_proc_entry(ACPI_SBS_FILE_STATE, *dir);
932 remove_proc_entry(ACPI_SBS_FILE_ALARM, *dir);
933 remove_proc_entry((*dir)->name, parent_dir);
934 *dir = NULL;
935 }
936
937}
938
939/* Smart Battery Interface */
940
941static struct proc_dir_entry *acpi_battery_dir = NULL;
942
943static int acpi_battery_read_info(struct seq_file *seq, void *offset)
944{
50dd0969 945 struct acpi_battery *battery = seq->private;
72206233 946 struct acpi_sbs *sbs = battery->sbs;
3f86b832
RT		 947 int cscale;
948 int result = 0;
949
72206233 950 if (sbs_mutex_lock(sbs)) {
635227ee 951 return -ENODEV;
3f86b832
RT		 952 }
953
72206233
VL		 954 result = acpi_check_update_proc(sbs);
955 if (result)
956 goto end;
3f86b832 957
72206233
VL		 958 if (update_time == 0) {
959 result = acpi_sbs_update_run(sbs, battery->id, DATA_TYPE_INFO);
3f86b832 960 if (result) {
6845118b
VL		 961 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
962 "acpi_sbs_update_run() failed"));
3f86b832
RT		 963 }
964 }
965
72206233 966 if (battery->battery_present) {
3f86b832
RT		 967 seq_printf(seq, "present: yes\n");
968 } else {
969 seq_printf(seq, "present: no\n");
970 goto end;
971 }
972
973 if (battery->info.capacity_mode) {
974 cscale = battery->info.vscale * battery->info.ipscale;
975 } else {
976 cscale = battery->info.ipscale;
977 }
72206233 978 seq_printf(seq, "design capacity: %i%s\n",
3f86b832 979 battery->info.design_capacity * cscale,
72206233 980 battery->info.capacity_mode ? "0 mWh" : " mAh");
3f86b832 981
72206233 982 seq_printf(seq, "last full capacity: %i%s\n",
3f86b832 983 battery->info.full_charge_capacity * cscale,
72206233 984 battery->info.capacity_mode ? "0 mWh" : " mAh");
3f86b832
RT		 985
986 seq_printf(seq, "battery technology: rechargeable\n");
987
988 seq_printf(seq, "design voltage: %i mV\n",
989 battery->info.design_voltage * battery->info.vscale);
990
991 seq_printf(seq, "design capacity warning: unknown\n");
992 seq_printf(seq, "design capacity low: unknown\n");
993 seq_printf(seq, "capacity granularity 1: unknown\n");
994 seq_printf(seq, "capacity granularity 2: unknown\n");
995
996 seq_printf(seq, "model number: %s\n",
997 battery->info.device_name);
998
999 seq_printf(seq, "serial number: %i\n",
1000 battery->info.serial_number);
1001
1002 seq_printf(seq, "battery type: %s\n",
1003 battery->info.device_chemistry);
1004
1005 seq_printf(seq, "OEM info: %s\n",
1006 battery->info.manufacturer_name);
1007
1008 end:
1009
72206233 1010 sbs_mutex_unlock(sbs);
3f86b832 1011
635227ee 1012 return result;
3f86b832
RT		 1013}
1014
1015static int acpi_battery_info_open_fs(struct inode *inode, struct file *file)
1016{
1017 return single_open(file, acpi_battery_read_info, PDE(inode)->data);
1018}
1019
1020static int acpi_battery_read_state(struct seq_file *seq, void *offset)
1021{
72206233
VL		 1022 struct acpi_battery *battery = seq->private;
1023 struct acpi_sbs *sbs = battery->sbs;
3f86b832
RT		 1024 int result = 0;
1025 int cscale;
1026 int foo;
1027
72206233 1028 if (sbs_mutex_lock(sbs)) {
635227ee 1029 return -ENODEV;
3f86b832
RT		 1030 }
1031
72206233
VL		 1032 result = acpi_check_update_proc(sbs);
1033 if (result)
1034 goto end;
3f86b832 1035
72206233
VL		 1036 if (update_time == 0) {
1037 result = acpi_sbs_update_run(sbs, battery->id, DATA_TYPE_STATE);
3f86b832 1038 if (result) {
6845118b
VL		 1039 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
1040 "acpi_sbs_update_run() failed"));
3f86b832
RT		 1041 }
1042 }
1043
72206233 1044 if (battery->battery_present) {
3f86b832
RT		 1045 seq_printf(seq, "present: yes\n");
1046 } else {
1047 seq_printf(seq, "present: no\n");
1048 goto end;
1049 }
1050
1051 if (battery->info.capacity_mode) {
1052 cscale = battery->info.vscale * battery->info.ipscale;
1053 } else {
1054 cscale = battery->info.ipscale;
1055 }
1056
72206233 1057 if (battery->state.battery_state & 0x0010) {
3f86b832
RT		 1058 seq_printf(seq, "capacity state: critical\n");
1059 } else {
1060 seq_printf(seq, "capacity state: ok\n");
1061 }
e6d0f562
VL		 1062
1063 foo = (s16) battery->state.amperage * battery->info.ipscale;
1064 if (battery->info.capacity_mode) {
1065 foo = foo * battery->info.design_voltage / 1000;
1066 }
3f86b832
RT		 1067 if (battery->state.amperage < 0) {
1068 seq_printf(seq, "charging state: discharging\n");
e6d0f562
VL		 1069 seq_printf(seq, "present rate: %d %s\n",
1070 -foo, battery->info.capacity_mode ? "mW" : "mA");
3f86b832
RT		 1071 } else if (battery->state.amperage > 0) {
1072 seq_printf(seq, "charging state: charging\n");
e6d0f562
VL		 1073 seq_printf(seq, "present rate: %d %s\n",
1074 foo, battery->info.capacity_mode ? "mW" : "mA");
3f86b832
RT		 1075 } else {
1076 seq_printf(seq, "charging state: charged\n");
1077 seq_printf(seq, "present rate: 0 %s\n",
1078 battery->info.capacity_mode ? "mW" : "mA");
1079 }
1080
72206233 1081 seq_printf(seq, "remaining capacity: %i%s\n",
3f86b832 1082 battery->state.remaining_capacity * cscale,
72206233 1083 battery->info.capacity_mode ? "0 mWh" : " mAh");
3f86b832
RT		 1084
1085 seq_printf(seq, "present voltage: %i mV\n",
1086 battery->state.voltage * battery->info.vscale);
1087
1088 end:
1089
72206233 1090 sbs_mutex_unlock(sbs);
3f86b832 1091
635227ee 1092 return result;
3f86b832
RT		 1093}
1094
1095static int acpi_battery_state_open_fs(struct inode *inode, struct file *file)
1096{
1097 return single_open(file, acpi_battery_read_state, PDE(inode)->data);
1098}
1099
1100static int acpi_battery_read_alarm(struct seq_file *seq, void *offset)
1101{
50dd0969 1102 struct acpi_battery *battery = seq->private;
72206233 1103 struct acpi_sbs *sbs = battery->sbs;
3f86b832
RT		 1104 int result = 0;
1105 int cscale;
1106
72206233 1107 if (sbs_mutex_lock(sbs)) {
635227ee 1108 return -ENODEV;
3f86b832
RT		 1109 }
1110
72206233
VL		 1111 result = acpi_check_update_proc(sbs);
1112 if (result)
1113 goto end;
3f86b832 1114
72206233
VL		 1115 if (update_time == 0) {
1116 result = acpi_sbs_update_run(sbs, battery->id, DATA_TYPE_ALARM);
3f86b832 1117 if (result) {
6845118b
VL		 1118 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
1119 "acpi_sbs_update_run() failed"));
3f86b832
RT		 1120 }
1121 }
1122
72206233 1123 if (!battery->battery_present) {
3f86b832
RT		 1124 seq_printf(seq, "present: no\n");
1125 goto end;
1126 }
1127
1128 if (battery->info.capacity_mode) {
1129 cscale = battery->info.vscale * battery->info.ipscale;
1130 } else {
1131 cscale = battery->info.ipscale;
1132 }
1133
1134 seq_printf(seq, "alarm: ");
1135 if (battery->alarm.remaining_capacity) {
72206233 1136 seq_printf(seq, "%i%s\n",
3f86b832 1137 battery->alarm.remaining_capacity * cscale,
72206233 1138 battery->info.capacity_mode ? "0 mWh" : " mAh");
3f86b832
RT		 1139 } else {
1140 seq_printf(seq, "disabled\n");
1141 }
1142
1143 end:
1144
72206233 1145 sbs_mutex_unlock(sbs);
3f86b832 1146
635227ee 1147 return result;
3f86b832
RT		 1148}
1149
1150static ssize_t
1151acpi_battery_write_alarm(struct file *file, const char __user * buffer,
1152 size_t count, loff_t * ppos)
1153{
50dd0969
JE		 1154 struct seq_file *seq = file->private_data;
1155 struct acpi_battery *battery = seq->private;
72206233 1156 struct acpi_sbs *sbs = battery->sbs;
3f86b832
RT		 1157 char alarm_string[12] = { '\0' };
1158 int result, old_alarm, new_alarm;
1159
72206233 1160 if (sbs_mutex_lock(sbs)) {
635227ee 1161 return -ENODEV;
3f86b832
RT		 1162 }
1163
72206233
VL		 1164 result = acpi_check_update_proc(sbs);
1165 if (result)
1166 goto end;
3f86b832 1167
72206233 1168 if (!battery->battery_present) {
3f86b832
RT		 1169 result = -ENODEV;
1170 goto end;
1171 }
1172
1173 if (count > sizeof(alarm_string) - 1) {
1174 result = -EINVAL;
1175 goto end;
1176 }
1177
1178 if (copy_from_user(alarm_string, buffer, count)) {
1179 result = -EFAULT;
1180 goto end;
1181 }
1182
1183 alarm_string[count] = 0;
1184
1185 old_alarm = battery->alarm.remaining_capacity;
1186 new_alarm = simple_strtoul(alarm_string, NULL, 0);
1187
1188 result = acpi_battery_set_alarm(battery, new_alarm);
1189 if (result) {
6845118b
VL		 1190 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
1191 "acpi_battery_set_alarm() failed"));
50dd0969 1192 acpi_battery_set_alarm(battery, old_alarm);
3f86b832
RT		 1193 goto end;
1194 }
1195 result = acpi_battery_get_alarm(battery);
1196 if (result) {
6845118b
VL		 1197 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
1198 "acpi_battery_get_alarm() failed"));
50dd0969 1199 acpi_battery_set_alarm(battery, old_alarm);
3f86b832
RT		 1200 goto end;
1201 }
1202
1203 end:
72206233 1204 sbs_mutex_unlock(sbs);
3f86b832
RT		 1205
1206 if (result) {
635227ee 1207 return result;
3f86b832 1208 } else {
635227ee 1209 return count;
3f86b832
RT		 1210 }
1211}
1212
1213static int acpi_battery_alarm_open_fs(struct inode *inode, struct file *file)
1214{
1215 return single_open(file, acpi_battery_read_alarm, PDE(inode)->data);
1216}
1217
1218static struct file_operations acpi_battery_info_fops = {
1219 .open = acpi_battery_info_open_fs,
1220 .read = seq_read,
1221 .llseek = seq_lseek,
1222 .release = single_release,
1223 .owner = THIS_MODULE,
1224};
1225
1226static struct file_operations acpi_battery_state_fops = {
1227 .open = acpi_battery_state_open_fs,
1228 .read = seq_read,
1229 .llseek = seq_lseek,
1230 .release = single_release,
1231 .owner = THIS_MODULE,
1232};
1233
1234static struct file_operations acpi_battery_alarm_fops = {
1235 .open = acpi_battery_alarm_open_fs,
1236 .read = seq_read,
1237 .write = acpi_battery_write_alarm,
1238 .llseek = seq_lseek,
1239 .release = single_release,
1240 .owner = THIS_MODULE,
1241};
1242
1243/* Legacy AC Adapter Interface */
1244
1245static struct proc_dir_entry *acpi_ac_dir = NULL;
1246
1247static int acpi_ac_read_state(struct seq_file *seq, void *offset)
1248{
50dd0969 1249 struct acpi_sbs *sbs = seq->private;
3f86b832
RT		 1250 int result;
1251
72206233 1252 if (sbs_mutex_lock(sbs)) {
635227ee 1253 return -ENODEV;
3f86b832
RT		 1254 }
1255
72206233
VL		 1256 if (update_time == 0) {
1257 result = acpi_sbs_update_run(sbs, -1, DATA_TYPE_AC_STATE);
3f86b832 1258 if (result) {
6845118b
VL		 1259 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
1260 "acpi_sbs_update_run() failed"));
3f86b832
RT		 1261 }
1262 }
1263
1264 seq_printf(seq, "state: %s\n",
72206233 1265 sbs->ac.ac_present ? "on-line" : "off-line");
3f86b832 1266
72206233 1267 sbs_mutex_unlock(sbs);
3f86b832 1268
635227ee 1269 return 0;
3f86b832
RT		 1270}
1271
1272static int acpi_ac_state_open_fs(struct inode *inode, struct file *file)
1273{
1274 return single_open(file, acpi_ac_read_state, PDE(inode)->data);
1275}
1276
1277static struct file_operations acpi_ac_state_fops = {
1278 .open = acpi_ac_state_open_fs,
1279 .read = seq_read,
1280 .llseek = seq_lseek,
1281 .release = single_release,
1282 .owner = THIS_MODULE,
1283};
1284
1285/* --------------------------------------------------------------------------
1286 Driver Interface
1287 -------------------------------------------------------------------------- */
1288
1289/* Smart Battery */
1290
1291static int acpi_battery_add(struct acpi_sbs *sbs, int id)
1292{
1293 int is_present;
1294 int result;
1295 char dir_name[32];
1296 struct acpi_battery *battery;
1297
3f86b832
RT		 1298 battery = &sbs->battery[id];
1299
1300 battery->alive = 0;
1301
1302 battery->init_state = 0;
1303 battery->id = id;
1304 battery->sbs = sbs;
1305
1306 result = acpi_battery_select(battery);
1307 if (result) {
6845118b
VL		 1308 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
1309 "acpi_battery_select() failed"));
3f86b832
RT		 1310 goto end;
1311 }
1312
1313 result = acpi_battery_get_present(battery);
1314 if (result) {
6845118b
VL		 1315 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
1316 "acpi_battery_get_present() failed"));
3f86b832
RT		 1317 goto end;
1318 }
1319
72206233 1320 is_present = battery->battery_present;
3f86b832
RT		 1321
1322 if (is_present) {
1323 result = acpi_battery_init(battery);
1324 if (result) {
6845118b
VL		 1325 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
1326 "acpi_battery_init() failed"));
3f86b832
RT		 1327 goto end;
1328 }
1329 battery->init_state = 1;
1330 }
1331
50dd0969 1332 sprintf(dir_name, ACPI_BATTERY_DIR_NAME, id);
3f86b832
RT		 1333
1334 result = acpi_sbs_generic_add_fs(&battery->battery_entry,
1335 acpi_battery_dir,
1336 dir_name,
1337 &acpi_battery_info_fops,
1338 &acpi_battery_state_fops,
1339 &acpi_battery_alarm_fops, battery);
1340 if (result) {
6845118b
VL		 1341 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
1342 "acpi_sbs_generic_add_fs() failed"));
3f86b832
RT		 1343 goto end;
1344 }
1345 battery->alive = 1;
1346
72206233
VL		 1347 printk(KERN_INFO PREFIX "%s [%s]: Battery Slot [%s] (battery %s)\n",
1348 ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device), dir_name,
1349 sbs->battery->battery_present ? "present" : "absent");
1350
3f86b832 1351 end:
635227ee 1352 return result;
3f86b832
RT		 1353}
1354
1355static void acpi_battery_remove(struct acpi_sbs *sbs, int id)
1356{
3f86b832
RT		 1357
1358 if (sbs->battery[id].battery_entry) {
1359 acpi_sbs_generic_remove_fs(&(sbs->battery[id].battery_entry),
1360 acpi_battery_dir);
1361 }
1362}
1363
1364static int acpi_ac_add(struct acpi_sbs *sbs)
1365{
1366 int result;
1367
3f86b832
RT		 1368 result = acpi_ac_get_present(sbs);
1369 if (result) {
6845118b
VL		 1370 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
1371 "acpi_ac_get_present() failed"));
3f86b832
RT		 1372 goto end;
1373 }
1374
1375 result = acpi_sbs_generic_add_fs(&sbs->ac_entry,
1376 acpi_ac_dir,
1377 ACPI_AC_DIR_NAME,
1378 NULL, &acpi_ac_state_fops, NULL, sbs);
1379 if (result) {
6845118b
VL		 1380 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
1381 "acpi_sbs_generic_add_fs() failed"));
3f86b832
RT		 1382 goto end;
1383 }
1384
72206233
VL		 1385 printk(KERN_INFO PREFIX "%s [%s]: AC Adapter [%s] (%s)\n",
1386 ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device),
1387 ACPI_AC_DIR_NAME, sbs->ac.ac_present ? "on-line" : "off-line");
1388
3f86b832
RT		 1389 end:
1390
635227ee 1391 return result;
3f86b832
RT		 1392}
1393
1394static void acpi_ac_remove(struct acpi_sbs *sbs)
1395{
3f86b832
RT		 1396
1397 if (sbs->ac_entry) {
1398 acpi_sbs_generic_remove_fs(&sbs->ac_entry, acpi_ac_dir);
1399 }
1400}
1401
72206233 1402static void acpi_sbs_update_time_run(unsigned long data)
3f86b832 1403{
72206233 1404 acpi_os_execute(OSL_GPE_HANDLER, acpi_sbs_update_time, (void *)data);
3f86b832
RT		 1405}
1406
72206233 1407static int acpi_sbs_update_run(struct acpi_sbs *sbs, int id, int data_type)
3f86b832
RT		 1408{
1409 struct acpi_battery *battery;
72206233
VL		 1410 int result = 0, cnt;
1411 int old_ac_present = -1;
1412 int old_battery_present = -1;
1413 int new_ac_present = -1;
1414 int new_battery_present = -1;
1415 int id_min = 0, id_max = MAX_SBS_BAT - 1;
3f86b832 1416 char dir_name[32];
72206233
VL		 1417 int do_battery_init = 0, do_ac_init = 0;
1418 int old_remaining_capacity = 0;
bc90a010 1419 int update_battery = 1;
72206233
VL		 1420 int up_tm = update_time;
1421
1422 if (sbs_zombie(sbs)) {
1423 goto end;
1424 }
3f86b832 1425
72206233
VL		 1426 if (id >= 0) {
1427 id_min = id_max = id;
1428 }
1429
1430 if (data_type == DATA_TYPE_COMMON && up_tm > 0) {
1431 cnt = up_tm / (up_tm > UPDATE_DELAY ? UPDATE_DELAY : up_tm);
1432 if (sbs->run_cnt % cnt != 0) {
1433 update_battery = 0;
1434 }
1435 }
1436
1437 sbs->run_cnt++;
1438
72206233 1439 old_ac_present = sbs->ac.ac_present;
3f86b832
RT		 1440
1441 result = acpi_ac_get_present(sbs);
1442 if (result) {
6845118b
VL		 1443 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
1444 "acpi_ac_get_present() failed"));
3f86b832
RT		 1445 }
1446
72206233 1447 new_ac_present = sbs->ac.ac_present;
3f86b832
RT		 1448
1449 do_ac_init = (old_ac_present != new_ac_present);
72206233
VL		 1450 if (sbs->run_cnt == 1 && data_type == DATA_TYPE_COMMON) {
1451 do_ac_init = 1;
1452 }
3f86b832 1453
72206233
VL		 1454 if (do_ac_init) {
1455 result = acpi_sbs_generate_event(sbs->device,
1456 ACPI_SBS_AC_NOTIFY_STATUS,
1457 new_ac_present,
1458 ACPI_AC_DIR_NAME,
1459 ACPI_AC_CLASS);
1460 if (result) {
1461 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
1462 "acpi_sbs_generate_event() failed"));
1463 }
1464 }
1465
1466 if (data_type == DATA_TYPE_COMMON) {
1467 if (!do_ac_init && !update_battery) {
1468 goto end;
1469 }
1470 }
1471
1472 if (data_type == DATA_TYPE_AC_STATE && !do_ac_init) {
3f86b832
RT		 1473 goto end;
1474 }
1475
72206233 1476 for (id = id_min; id <= id_max; id++) {
3f86b832
RT		 1477 battery = &sbs->battery[id];
1478 if (battery->alive == 0) {
1479 continue;
1480 }
1481
1482 old_remaining_capacity = battery->state.remaining_capacity;
1483
72206233 1484 old_battery_present = battery->battery_present;
3f86b832
RT		 1485
1486 result = acpi_battery_select(battery);
1487 if (result) {
6845118b
VL		 1488 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
1489 "acpi_battery_select() failed"));
3f86b832 1490 }
3f86b832
RT		 1491
1492 result = acpi_battery_get_present(battery);
1493 if (result) {
6845118b
VL		 1494 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
1495 "acpi_battery_get_present() failed"));
3f86b832 1496 }
3f86b832 1497
72206233 1498 new_battery_present = battery->battery_present;
3f86b832
RT		 1499
1500 do_battery_init = ((old_battery_present != new_battery_present)
1501 && new_battery_present);
72206233
VL		 1502 if (!new_battery_present)
1503 goto event;
1504 if (do_ac_init || do_battery_init) {
3f86b832
RT		 1505 result = acpi_battery_init(battery);
1506 if (result) {
6845118b
VL		 1507 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
1508 "acpi_battery_init() "
1509 "failed"));
3f86b832
RT		 1510 }
1511 }
72206233 1512 if (sbs_zombie(sbs)) {
3f86b832
RT		 1513 goto end;
1514 }
72206233
VL		 1515
1516 if ((data_type == DATA_TYPE_COMMON
1517 || data_type == DATA_TYPE_INFO)
1518 && new_battery_present) {
1519 result = acpi_battery_get_info(battery);
3f86b832 1520 if (result) {
6845118b 1521 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
72206233 1522 "acpi_battery_get_info() failed"));
3f86b832 1523 }
72206233
VL		 1524 }
1525 if (data_type == DATA_TYPE_INFO) {
1526 continue;
1527 }
1528 if (sbs_zombie(sbs)) {
1529 goto end;
1530 }
3f86b832 1531
72206233
VL		 1532 if ((data_type == DATA_TYPE_COMMON
1533 || data_type == DATA_TYPE_STATE)
1534 && new_battery_present) {
3f86b832
RT		 1535 result = acpi_battery_get_state(battery);
1536 if (result) {
6845118b 1537 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
72206233 1538 "acpi_battery_get_state() failed"));
3f86b832
RT		 1539 }
1540 }
72206233
VL		 1541 if (data_type == DATA_TYPE_STATE) {
1542 goto event;
3f86b832 1543 }
72206233
VL		 1544 if (sbs_zombie(sbs)) {
1545 goto end;
3f86b832
RT		 1546 }
1547
72206233
VL		 1548 if ((data_type == DATA_TYPE_COMMON
1549 || data_type == DATA_TYPE_ALARM)
1550 && new_battery_present) {
1551 result = acpi_battery_get_alarm(battery);
3f86b832 1552 if (result) {
6845118b 1553 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
72206233 1554 "acpi_battery_get_alarm() "
6845118b 1555 "failed"));
3f86b832
RT		 1556 }
1557 }
72206233
VL		 1558 if (data_type == DATA_TYPE_ALARM) {
1559 continue;
1560 }
1561 if (sbs_zombie(sbs)) {
1562 goto end;
1563 }
1564
1565 event:
1566
1567 if (old_battery_present != new_battery_present || do_ac_init ||
1568 old_remaining_capacity !=
1569 battery->state.remaining_capacity) {
50dd0969 1570 sprintf(dir_name, ACPI_BATTERY_DIR_NAME, id);
3f86b832
RT		 1571 result = acpi_sbs_generate_event(sbs->device,
1572 ACPI_SBS_BATTERY_NOTIFY_STATUS,
1573 new_battery_present,
1574 dir_name,
1575 ACPI_BATTERY_CLASS);
1576 if (result) {
6845118b 1577 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
72206233
VL		 1578 "acpi_sbs_generate_event() "
1579 "failed"));
3f86b832
RT		 1580 }
1581 }
3f86b832
RT		 1582 }
1583
1584 end:
72206233 1585
635227ee 1586 return result;
3f86b832
RT		 1587}
1588
72206233 1589static void acpi_sbs_update_time(void *data)
3f86b832
RT		 1590{
1591 struct acpi_sbs *sbs = data;
1592 unsigned long delay = -1;
1593 int result;
72206233 1594 unsigned int up_tm = update_time;
3f86b832 1595
72206233
VL		 1596 if (sbs_mutex_lock(sbs))
1597 return;
3f86b832 1598
72206233 1599 result = acpi_sbs_update_run(sbs, -1, DATA_TYPE_COMMON);
3f86b832 1600 if (result) {
6845118b
VL		 1601 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
1602 "acpi_sbs_update_run() failed"));
3f86b832
RT		 1603 }
1604
72206233 1605 if (sbs_zombie(sbs)) {
3f86b832
RT		 1606 goto end;
1607 }
1608
72206233
VL		 1609 if (!up_tm) {
1610 if (timer_pending(&sbs->update_timer))
1611 del_timer(&sbs->update_timer);
1612 } else {
1613 delay = (up_tm > UPDATE_DELAY ? UPDATE_DELAY : up_tm);
1614 delay = jiffies + HZ * delay;
1615 if (timer_pending(&sbs->update_timer)) {
1616 mod_timer(&sbs->update_timer, delay);
1617 } else {
1618 sbs->update_timer.data = (unsigned long)data;
1619 sbs->update_timer.function = acpi_sbs_update_time_run;
1620 sbs->update_timer.expires = delay;
1621 add_timer(&sbs->update_timer);
1622 }
3f86b832
RT		 1623 }
1624
3f86b832 1625 end:
72206233
VL		 1626
1627 sbs_mutex_unlock(sbs);
3f86b832
RT		 1628}
1629
1630static int acpi_sbs_add(struct acpi_device *device)
1631{
1632 struct acpi_sbs *sbs = NULL;
72206233 1633 int result = 0, remove_result = 0;
6d15702c 1634 int id;
3f86b832 1635 acpi_status status = AE_OK;
6d15702c
VL		 1636 unsigned long val;
1637
1638 status =
addad454 1639 acpi_evaluate_integer(device->handle, "_EC", NULL, &val);
6d15702c 1640 if (ACPI_FAILURE(status)) {
6845118b 1641 ACPI_EXCEPTION((AE_INFO, AE_ERROR, "Error obtaining _EC"));
6d15702c
VL		 1642 return -EIO;
1643 }
3f86b832 1644
36bcbec7 1645 sbs = kzalloc(sizeof(struct acpi_sbs), GFP_KERNEL);
3f86b832 1646 if (!sbs) {
72206233
VL		 1647 ACPI_EXCEPTION((AE_INFO, AE_ERROR, "kzalloc() failed"));
1648 result = -ENOMEM;
1649 goto end;
3f86b832 1650 }
3f86b832 1651
72206233
VL		 1652 mutex_init(&sbs->mutex);
1653
1654 sbs_mutex_lock(sbs);
1655
addad454 1656 sbs->base = 0xff & (val >> 8);
3f86b832 1657 sbs->device = device;
3f86b832
RT		 1658
1659 strcpy(acpi_device_name(device), ACPI_SBS_DEVICE_NAME);
1660 strcpy(acpi_device_class(device), ACPI_SBS_CLASS);
1661 acpi_driver_data(device) = sbs;
1662
3f86b832
RT		 1663 result = acpi_ac_add(sbs);
1664 if (result) {
6845118b 1665 ACPI_EXCEPTION((AE_INFO, AE_ERROR, "acpi_ac_add() failed"));
3f86b832
RT		 1666 goto end;
1667 }
72206233 1668
addad454
AS		 1669 acpi_sbsm_get_info(sbs);
1670
1671 if (!sbs->sbsm_present) {
3f86b832
RT		 1672 result = acpi_battery_add(sbs, 0);
1673 if (result) {
6845118b
VL		 1674 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
1675 "acpi_battery_add() failed"));
3f86b832
RT		 1676 goto end;
1677 }
1678 } else {
1679 for (id = 0; id < MAX_SBS_BAT; id++) {
1680 if ((sbs->sbsm_batteries_supported & (1 << id))) {
1681 result = acpi_battery_add(sbs, id);
1682 if (result) {
6845118b 1683 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
72206233 1684 "acpi_battery_add() failed"));
3f86b832
RT		 1685 goto end;
1686 }
1687 }
1688 }
1689 }
1690
3f86b832 1691 init_timer(&sbs->update_timer);
72206233
VL		 1692 result = acpi_check_update_proc(sbs);
1693 if (result)
1694 goto end;
3f86b832
RT		 1695
1696 end:
72206233
VL		 1697
1698 sbs_mutex_unlock(sbs);
1699
3f86b832 1700 if (result) {
72206233
VL		 1701 remove_result = acpi_sbs_remove(device, 0);
1702 if (remove_result) {
1703 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
1704 "acpi_sbs_remove() failed"));
1705 }
3f86b832
RT		 1706 }
1707
635227ee 1708 return result;
3f86b832
RT		 1709}
1710
72206233 1711static int acpi_sbs_remove(struct acpi_device *device, int type)
3f86b832 1712{
cece9014 1713 struct acpi_sbs *sbs;
3f86b832
RT		 1714 int id;
1715
963497c1
LV		 1716 if (!device) {
1717 return -EINVAL;
1718 }
1719
72206233 1720 sbs = acpi_driver_data(device);
963497c1 1721 if (!sbs) {
635227ee 1722 return -EINVAL;
3f86b832
RT		 1723 }
1724
72206233
VL		 1725 sbs_mutex_lock(sbs);
1726
3f86b832 1727 sbs->zombie = 1;
3f86b832
RT		 1728 del_timer_sync(&sbs->update_timer);
1729 acpi_os_wait_events_complete(NULL);
1730 del_timer_sync(&sbs->update_timer);
1731
1732 for (id = 0; id < MAX_SBS_BAT; id++) {
1733 acpi_battery_remove(sbs, id);
1734 }
1735
1736 acpi_ac_remove(sbs);
1737
72206233
VL		 1738 sbs_mutex_unlock(sbs);
1739
1740 mutex_destroy(&sbs->mutex);
6d15702c 1741
3f86b832
RT		 1742 kfree(sbs);
1743
635227ee 1744 return 0;
3f86b832
RT		 1745}
1746
72206233
VL		 1747static void acpi_sbs_rmdirs(void)
1748{
1749 if (acpi_ac_dir) {
1750 acpi_unlock_ac_dir(acpi_ac_dir);
1751 acpi_ac_dir = NULL;
1752 }
1753 if (acpi_battery_dir) {
1754 acpi_unlock_battery_dir(acpi_battery_dir);
1755 acpi_battery_dir = NULL;
1756 }
1757}
1758
1759static int acpi_sbs_resume(struct acpi_device *device)
1760{
1761 struct acpi_sbs *sbs;
1762
1763 if (!device)
1764 return -EINVAL;
1765
1766 sbs = device->driver_data;
1767
1768 sbs->run_cnt = 0;
1769
1770 return 0;
1771}
1772
3f86b832
RT		 1773static int __init acpi_sbs_init(void)
1774{
1775 int result = 0;
1776
b20d2aeb
LB		 1777 if (acpi_disabled)
1778 return -ENODEV;
1779
3f86b832
RT		 1780 if (capacity_mode != DEF_CAPACITY_UNIT
1781 && capacity_mode != MAH_CAPACITY_UNIT
1782 && capacity_mode != MWH_CAPACITY_UNIT) {
72206233 1783 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
6845118b 1784 "invalid capacity_mode = %d", capacity_mode));
635227ee 1785 return -EINVAL;
3f86b832
RT		 1786 }
1787
1788 acpi_ac_dir = acpi_lock_ac_dir();
1789 if (!acpi_ac_dir) {
6845118b
VL		 1790 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
1791 "acpi_lock_ac_dir() failed"));
635227ee 1792 return -ENODEV;
3f86b832
RT		 1793 }
1794
1795 acpi_battery_dir = acpi_lock_battery_dir();
1796 if (!acpi_battery_dir) {
6845118b
VL		 1797 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
1798 "acpi_lock_battery_dir() failed"));
72206233 1799 acpi_sbs_rmdirs();
635227ee 1800 return -ENODEV;
3f86b832
RT		 1801 }
1802
1803 result = acpi_bus_register_driver(&acpi_sbs_driver);
1804 if (result < 0) {
6845118b
VL		 1805 ACPI_EXCEPTION((AE_INFO, AE_ERROR,
1806 "acpi_bus_register_driver() failed"));
72206233 1807 acpi_sbs_rmdirs();
635227ee 1808 return -ENODEV;
3f86b832
RT		 1809 }
1810
635227ee 1811 return 0;
3f86b832
RT		 1812}
1813
1814static void __exit acpi_sbs_exit(void)
1815{
3f86b832
RT		 1816 acpi_bus_unregister_driver(&acpi_sbs_driver);
1817
72206233 1818 acpi_sbs_rmdirs();
3f86b832 1819
635227ee 1820 return;
3f86b832
RT		 1821}
1822
1823module_init(acpi_sbs_init);
1824module_exit(acpi_sbs_exit);
Linux kernel - Deliverables
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