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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / acpi / sbs.c
CommitLineData
3f86b832 1/*
db1c291a 2 * sbs.c - ACPI Smart Battery System Driver ($Revision: 2.0 $)
3f86b832 3 *
db1c291a
AS		 4 * Copyright (c) 2007 Alexey Starikovskiy <astarikovskiy@suse.de>
5 * Copyright (c) 2005-2007 Vladimir Lebedev <vladimir.p.lebedev@intel.com>
3f86b832
RT		 6 * Copyright (c) 2005 Rich Townsend <rhdt@bartol.udel.edu>
7 *
8 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or (at
13 * your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License along
21 * with this program; if not, write to the Free Software Foundation, Inc.,
22 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
23 *
24 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
25 */
26
27#include <linux/init.h>
5a0e3ad6 28#include <linux/slab.h>
3f86b832
RT		 29#include <linux/module.h>
30#include <linux/moduleparam.h>
31#include <linux/kernel.h>
94f6c086 32
fdcedbba 33#ifdef CONFIG_ACPI_PROCFS_POWER
3f86b832
RT		 34#include <linux/proc_fs.h>
35#include <linux/seq_file.h>
36#include <asm/uaccess.h>
66e4b72b 37#endif
94f6c086 38
3f86b832 39#include <linux/acpi.h>
6d15702c 40#include <linux/timer.h>
72206233 41#include <linux/jiffies.h>
3f86b832 42#include <linux/delay.h>
94f6c086
AS		 43#include <linux/power_supply.h>
44
91087dfa
AS		 45#include "sbshc.h"
46
a192a958
LB		 47#define PREFIX "ACPI: "
48
3f86b832
RT		 49#define ACPI_SBS_CLASS "sbs"
50#define ACPI_AC_CLASS "ac_adapter"
51#define ACPI_BATTERY_CLASS "battery"
3f86b832
RT		 52#define ACPI_SBS_DEVICE_NAME "Smart Battery System"
53#define ACPI_SBS_FILE_INFO "info"
54#define ACPI_SBS_FILE_STATE "state"
55#define ACPI_SBS_FILE_ALARM "alarm"
56#define ACPI_BATTERY_DIR_NAME "BAT%i"
57#define ACPI_AC_DIR_NAME "AC0"
3f86b832 58
db1c291a
AS		 59#define ACPI_SBS_NOTIFY_STATUS 0x80
60#define ACPI_SBS_NOTIFY_INFO 0x81
3f86b832 61
db1c291a 62MODULE_AUTHOR("Alexey Starikovskiy <astarikovskiy@suse.de>");
3f86b832
RT		 63MODULE_DESCRIPTION("Smart Battery System ACPI interface driver");
64MODULE_LICENSE("GPL");
65
db1c291a
AS		 66static unsigned int cache_time = 1000;
67module_param(cache_time, uint, 0644);
68MODULE_PARM_DESC(cache_time, "cache time in milliseconds");
6d15702c
VL		 69
70extern struct proc_dir_entry *acpi_lock_ac_dir(void);
71extern struct proc_dir_entry *acpi_lock_battery_dir(void);
72extern void acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir);
73extern void acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir);
74
db1c291a 75#define MAX_SBS_BAT 4
6d15702c
VL		 76#define ACPI_SBS_BLOCK_MAX 32
77
1ba90e3a 78static const struct acpi_device_id sbs_device_ids[] = {
91087dfa 79 {"ACPI0002", 0},
1ba90e3a
TR		 80 {"", 0},
81};
82MODULE_DEVICE_TABLE(acpi, sbs_device_ids);
83
3f86b832 84struct acpi_battery {
94f6c086 85 struct power_supply bat;
3f86b832 86 struct acpi_sbs *sbs;
fdcedbba 87#ifdef CONFIG_ACPI_PROCFS_POWER
89862e3b 88 struct proc_dir_entry *proc_entry;
66e4b72b 89#endif
db1c291a
AS		 90 unsigned long update_time;
91 char name[8];
89862e3b
AS		 92 char manufacturer_name[ACPI_SBS_BLOCK_MAX];
93 char device_name[ACPI_SBS_BLOCK_MAX];
94 char device_chemistry[ACPI_SBS_BLOCK_MAX];
94f6c086 95 u16 alarm_capacity;
89862e3b
AS		 96 u16 full_charge_capacity;
97 u16 design_capacity;
98 u16 design_voltage;
99 u16 serial_number;
db1c291a
AS		 100 u16 cycle_count;
101 u16 temp_now;
89862e3b 102 u16 voltage_now;
7faa144a
AS		 103 s16 rate_now;
104 s16 rate_avg;
89862e3b 105 u16 capacity_now;
db1c291a 106 u16 state_of_charge;
89862e3b 107 u16 state;
89862e3b 108 u16 mode;
db1c291a 109 u16 spec;
89862e3b 110 u8 id;
89862e3b 111 u8 present:1;
037cbc63 112 u8 have_sysfs_alarm:1;
3f86b832
RT		 113};
114
497888cf 115#define to_acpi_battery(x) container_of(x, struct acpi_battery, bat)
94f6c086 116
3f86b832 117struct acpi_sbs {
94f6c086 118 struct power_supply charger;
3f86b832 119 struct acpi_device *device;
91087dfa 120 struct acpi_smb_hc *hc;
db1c291a 121 struct mutex lock;
fdcedbba 122#ifdef CONFIG_ACPI_PROCFS_POWER
db1c291a 123 struct proc_dir_entry *charger_entry;
66e4b72b 124#endif
3f86b832 125 struct acpi_battery battery[MAX_SBS_BAT];
db1c291a 126 u8 batteries_supported:4;
89862e3b
AS		 127 u8 manager_present:1;
128 u8 charger_present:1;
3f86b832
RT		 129};
130
94f6c086
AS		 131#define to_acpi_sbs(x) container_of(x, struct acpi_sbs, charger)
132
51fac838 133static int acpi_sbs_remove(struct acpi_device *device);
1dd5c715
LT		 134static int acpi_battery_get_state(struct acpi_battery *battery);
135
db1c291a 136static inline int battery_scale(int log)
72206233 137{
db1c291a
AS		 138 int scale = 1;
139 while (log--)
140 scale *= 10;
141 return scale;
72206233
VL		 142}
143
db1c291a 144static inline int acpi_battery_vscale(struct acpi_battery *battery)
72206233 145{
db1c291a 146 return battery_scale((battery->spec & 0x0f00) >> 8);
72206233
VL		 147}
148
db1c291a 149static inline int acpi_battery_ipscale(struct acpi_battery *battery)
72206233 150{
db1c291a 151 return battery_scale((battery->spec & 0xf000) >> 12);
72206233
VL		 152}
153
db1c291a 154static inline int acpi_battery_mode(struct acpi_battery *battery)
72206233 155{
db1c291a 156 return (battery->mode & 0x8000);
72206233 157}
3f86b832 158
db1c291a 159static inline int acpi_battery_scale(struct acpi_battery *battery)
3f86b832 160{
db1c291a
AS		 161 return (acpi_battery_mode(battery) ? 10 : 1) *
162 acpi_battery_ipscale(battery);
3f86b832
RT		 163}
164
94f6c086
AS		 165static int sbs_get_ac_property(struct power_supply *psy,
166 enum power_supply_property psp,
167 union power_supply_propval *val)
168{
169 struct acpi_sbs *sbs = to_acpi_sbs(psy);
170 switch (psp) {
171 case POWER_SUPPLY_PROP_ONLINE:
172 val->intval = sbs->charger_present;
173 break;
174 default:
175 return -EINVAL;
176 }
177 return 0;
178}
179
180static int acpi_battery_technology(struct acpi_battery *battery)
181{
182 if (!strcasecmp("NiCd", battery->device_chemistry))
183 return POWER_SUPPLY_TECHNOLOGY_NiCd;
184 if (!strcasecmp("NiMH", battery->device_chemistry))
185 return POWER_SUPPLY_TECHNOLOGY_NiMH;
186 if (!strcasecmp("LION", battery->device_chemistry))
187 return POWER_SUPPLY_TECHNOLOGY_LION;
188 if (!strcasecmp("LiP", battery->device_chemistry))
189 return POWER_SUPPLY_TECHNOLOGY_LIPO;
190 return POWER_SUPPLY_TECHNOLOGY_UNKNOWN;
191}
192
193static int acpi_sbs_battery_get_property(struct power_supply *psy,
194 enum power_supply_property psp,
195 union power_supply_propval *val)
196{
197 struct acpi_battery *battery = to_acpi_battery(psy);
198
199 if ((!battery->present) && psp != POWER_SUPPLY_PROP_PRESENT)
200 return -ENODEV;
1dd5c715
LT		 201
202 acpi_battery_get_state(battery);
94f6c086
AS		 203 switch (psp) {
204 case POWER_SUPPLY_PROP_STATUS:
7faa144a 205 if (battery->rate_now < 0)
94f6c086 206 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
7faa144a 207 else if (battery->rate_now > 0)
94f6c086
AS		 208 val->intval = POWER_SUPPLY_STATUS_CHARGING;
209 else
210 val->intval = POWER_SUPPLY_STATUS_FULL;
211 break;
212 case POWER_SUPPLY_PROP_PRESENT:
213 val->intval = battery->present;
214 break;
215 case POWER_SUPPLY_PROP_TECHNOLOGY:
216 val->intval = acpi_battery_technology(battery);
217 break;
16698857
AS		 218 case POWER_SUPPLY_PROP_CYCLE_COUNT:
219 val->intval = battery->cycle_count;
220 break;
94f6c086
AS		 221 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
222 val->intval = battery->design_voltage *
223 acpi_battery_vscale(battery) * 1000;
224 break;
225 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
226 val->intval = battery->voltage_now *
227 acpi_battery_vscale(battery) * 1000;
228 break;
229 case POWER_SUPPLY_PROP_CURRENT_NOW:
7faa144a
AS		 230 case POWER_SUPPLY_PROP_POWER_NOW:
231 val->intval = abs(battery->rate_now) *
94f6c086 232 acpi_battery_ipscale(battery) * 1000;
e4108292
LT		 233 val->intval *= (acpi_battery_mode(battery)) ?
234 (battery->voltage_now *
235 acpi_battery_vscale(battery) / 1000) : 1;
94f6c086
AS		 236 break;
237 case POWER_SUPPLY_PROP_CURRENT_AVG:
7faa144a
AS		 238 case POWER_SUPPLY_PROP_POWER_AVG:
239 val->intval = abs(battery->rate_avg) *
94f6c086 240 acpi_battery_ipscale(battery) * 1000;
e4108292
LT		 241 val->intval *= (acpi_battery_mode(battery)) ?
242 (battery->voltage_now *
243 acpi_battery_vscale(battery) / 1000) : 1;
94f6c086
AS		 244 break;
245 case POWER_SUPPLY_PROP_CAPACITY:
246 val->intval = battery->state_of_charge;
247 break;
248 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
249 case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
250 val->intval = battery->design_capacity *
251 acpi_battery_scale(battery) * 1000;
252 break;
253 case POWER_SUPPLY_PROP_CHARGE_FULL:
254 case POWER_SUPPLY_PROP_ENERGY_FULL:
255 val->intval = battery->full_charge_capacity *
256 acpi_battery_scale(battery) * 1000;
257 break;
258 case POWER_SUPPLY_PROP_CHARGE_NOW:
259 case POWER_SUPPLY_PROP_ENERGY_NOW:
260 val->intval = battery->capacity_now *
261 acpi_battery_scale(battery) * 1000;
262 break;
263 case POWER_SUPPLY_PROP_TEMP:
264 val->intval = battery->temp_now - 2730; // dK -> dC
265 break;
266 case POWER_SUPPLY_PROP_MODEL_NAME:
267 val->strval = battery->device_name;
268 break;
269 case POWER_SUPPLY_PROP_MANUFACTURER:
270 val->strval = battery->manufacturer_name;
271 break;
272 default:
273 return -EINVAL;
274 }
275 return 0;
276}
277
278static enum power_supply_property sbs_ac_props[] = {
279 POWER_SUPPLY_PROP_ONLINE,
280};
281
282static enum power_supply_property sbs_charge_battery_props[] = {
283 POWER_SUPPLY_PROP_STATUS,
284 POWER_SUPPLY_PROP_PRESENT,
285 POWER_SUPPLY_PROP_TECHNOLOGY,
16698857 286 POWER_SUPPLY_PROP_CYCLE_COUNT,
94f6c086
AS		 287 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
288 POWER_SUPPLY_PROP_VOLTAGE_NOW,
289 POWER_SUPPLY_PROP_CURRENT_NOW,
290 POWER_SUPPLY_PROP_CURRENT_AVG,
291 POWER_SUPPLY_PROP_CAPACITY,
292 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
293 POWER_SUPPLY_PROP_CHARGE_FULL,
294 POWER_SUPPLY_PROP_CHARGE_NOW,
295 POWER_SUPPLY_PROP_TEMP,
296 POWER_SUPPLY_PROP_MODEL_NAME,
297 POWER_SUPPLY_PROP_MANUFACTURER,
298};
299
300static enum power_supply_property sbs_energy_battery_props[] = {
301 POWER_SUPPLY_PROP_STATUS,
302 POWER_SUPPLY_PROP_PRESENT,
303 POWER_SUPPLY_PROP_TECHNOLOGY,
304 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
305 POWER_SUPPLY_PROP_VOLTAGE_NOW,
306 POWER_SUPPLY_PROP_CURRENT_NOW,
307 POWER_SUPPLY_PROP_CURRENT_AVG,
7faa144a
AS		 308 POWER_SUPPLY_PROP_POWER_NOW,
309 POWER_SUPPLY_PROP_POWER_AVG,
94f6c086
AS		 310 POWER_SUPPLY_PROP_CAPACITY,
311 POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
312 POWER_SUPPLY_PROP_ENERGY_FULL,
313 POWER_SUPPLY_PROP_ENERGY_NOW,
314 POWER_SUPPLY_PROP_TEMP,
315 POWER_SUPPLY_PROP_MODEL_NAME,
316 POWER_SUPPLY_PROP_MANUFACTURER,
317};
7faa144a 318
94f6c086 319
db1c291a
AS		 320/* --------------------------------------------------------------------------
321 Smart Battery System Management
322 -------------------------------------------------------------------------- */
3f86b832 323
db1c291a
AS		 324struct acpi_battery_reader {
325 u8 command; /* command for battery */
326 u8 mode; /* word or block? */
327 size_t offset; /* offset inside struct acpi_sbs_battery */
328};
3f86b832 329
db1c291a
AS		 330static struct acpi_battery_reader info_readers[] = {
331 {0x01, SMBUS_READ_WORD, offsetof(struct acpi_battery, alarm_capacity)},
332 {0x03, SMBUS_READ_WORD, offsetof(struct acpi_battery, mode)},
333 {0x10, SMBUS_READ_WORD, offsetof(struct acpi_battery, full_charge_capacity)},
334 {0x17, SMBUS_READ_WORD, offsetof(struct acpi_battery, cycle_count)},
335 {0x18, SMBUS_READ_WORD, offsetof(struct acpi_battery, design_capacity)},
336 {0x19, SMBUS_READ_WORD, offsetof(struct acpi_battery, design_voltage)},
337 {0x1a, SMBUS_READ_WORD, offsetof(struct acpi_battery, spec)},
338 {0x1c, SMBUS_READ_WORD, offsetof(struct acpi_battery, serial_number)},
339 {0x20, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, manufacturer_name)},
340 {0x21, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, device_name)},
341 {0x22, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, device_chemistry)},
342};
3f86b832 343
db1c291a
AS		 344static struct acpi_battery_reader state_readers[] = {
345 {0x08, SMBUS_READ_WORD, offsetof(struct acpi_battery, temp_now)},
346 {0x09, SMBUS_READ_WORD, offsetof(struct acpi_battery, voltage_now)},
7faa144a
AS		 347 {0x0a, SMBUS_READ_WORD, offsetof(struct acpi_battery, rate_now)},
348 {0x0b, SMBUS_READ_WORD, offsetof(struct acpi_battery, rate_avg)},
db1c291a
AS		 349 {0x0f, SMBUS_READ_WORD, offsetof(struct acpi_battery, capacity_now)},
350 {0x0e, SMBUS_READ_WORD, offsetof(struct acpi_battery, state_of_charge)},
351 {0x16, SMBUS_READ_WORD, offsetof(struct acpi_battery, state)},
352};
3f86b832 353
db1c291a 354static int acpi_manager_get_info(struct acpi_sbs *sbs)
3f86b832 355{
3f86b832 356 int result = 0;
db1c291a 357 u16 battery_system_info;
3f86b832 358
db1c291a 359 result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER,
94f6c086 360 0x04, (u8 *)&battery_system_info);
db1c291a
AS		 361 if (!result)
362 sbs->batteries_supported = battery_system_info & 0x000f;
635227ee 363 return result;
3f86b832
RT		 364}
365
366static int acpi_battery_get_info(struct acpi_battery *battery)
367{
db1c291a 368 int i, result = 0;
3f86b832 369
db1c291a 370 for (i = 0; i < ARRAY_SIZE(info_readers); ++i) {
94f6c086
AS		 371 result = acpi_smbus_read(battery->sbs->hc,
372 info_readers[i].mode,
373 ACPI_SBS_BATTERY,
374 info_readers[i].command,
375 (u8 *) battery +
376 info_readers[i].offset);
db1c291a
AS		 377 if (result)
378 break;
3f86b832 379 }
635227ee 380 return result;
3f86b832
RT		 381}
382
3f86b832
RT		 383static int acpi_battery_get_state(struct acpi_battery *battery)
384{
db1c291a 385 int i, result = 0;
3f86b832 386
94f6c086
AS		 387 if (battery->update_time &&
388 time_before(jiffies, battery->update_time +
db1c291a
AS		 389 msecs_to_jiffies(cache_time)))
390 return 0;
391 for (i = 0; i < ARRAY_SIZE(state_readers); ++i) {
392 result = acpi_smbus_read(battery->sbs->hc,
393 state_readers[i].mode,
394 ACPI_SBS_BATTERY,
395 state_readers[i].command,
396 (u8 *)battery +
397 state_readers[i].offset);
398 if (result)
3f86b832 399 goto end;
3f86b832 400 }
3f86b832 401 end:
db1c291a 402 battery->update_time = jiffies;
635227ee 403 return result;
3f86b832
RT		 404}
405
db1c291a 406static int acpi_battery_get_alarm(struct acpi_battery *battery)
3f86b832 407{
db1c291a
AS		 408 return acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD,
409 ACPI_SBS_BATTERY, 0x01,
94f6c086 410 (u8 *)&battery->alarm_capacity);
3f86b832
RT		 411}
412
db1c291a 413static int acpi_battery_set_alarm(struct acpi_battery *battery)
3f86b832 414{
db1c291a 415 struct acpi_sbs *sbs = battery->sbs;
94f6c086
AS		 416 u16 value, sel = 1 << (battery->id + 12);
417
418 int ret;
419
3f86b832 420
db1c291a 421 if (sbs->manager_present) {
94f6c086 422 ret = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER,
db1c291a 423 0x01, (u8 *)&value);
94f6c086
AS		 424 if (ret)
425 goto end;
426 if ((value & 0xf000) != sel) {
427 value &= 0x0fff;
428 value |= sel;
429 ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD,
430 ACPI_SBS_MANAGER,
431 0x01, (u8 *)&value, 2);
432 if (ret)
433 goto end;
434 }
3f86b832 435 }
94f6c086
AS		 436 ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, ACPI_SBS_BATTERY,
437 0x01, (u8 *)&battery->alarm_capacity, 2);
438 end:
439 return ret;
3f86b832
RT		 440}
441
442static int acpi_ac_get_present(struct acpi_sbs *sbs)
443{
db1c291a
AS		 444 int result;
445 u16 status;
3f86b832 446
db1c291a
AS		 447 result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_CHARGER,
448 0x13, (u8 *) & status);
449 if (!result)
450 sbs->charger_present = (status >> 15) & 0x1;
635227ee 451 return result;
3f86b832
RT		 452}
453
8bd95532
AS		 454static ssize_t acpi_battery_alarm_show(struct device *dev,
455 struct device_attribute *attr,
456 char *buf)
457{
458 struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev));
459 acpi_battery_get_alarm(battery);
460 return sprintf(buf, "%d\n", battery->alarm_capacity *
461 acpi_battery_scale(battery) * 1000);
462}
463
464static ssize_t acpi_battery_alarm_store(struct device *dev,
465 struct device_attribute *attr,
466 const char *buf, size_t count)
467{
468 unsigned long x;
469 struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev));
470 if (sscanf(buf, "%ld\n", &x) == 1)
471 battery->alarm_capacity = x /
472 (1000 * acpi_battery_scale(battery));
473 if (battery->present)
474 acpi_battery_set_alarm(battery);
475 return count;
476}
477
478static struct device_attribute alarm_attr = {
01e8ef11 479 .attr = {.name = "alarm", .mode = 0644},
8bd95532
AS		 480 .show = acpi_battery_alarm_show,
481 .store = acpi_battery_alarm_store,
482};
483
3f86b832
RT		 484/* --------------------------------------------------------------------------
485 FS Interface (/proc/acpi)
486 -------------------------------------------------------------------------- */
487
fdcedbba 488#ifdef CONFIG_ACPI_PROCFS_POWER
3f86b832 489/* Generic Routines */
3f86b832 490static int
db1c291a 491acpi_sbs_add_fs(struct proc_dir_entry **dir,
94f6c086
AS		 492 struct proc_dir_entry *parent_dir,
493 char *dir_name,
070d8eb1
JE		 494 const struct file_operations *info_fops,
495 const struct file_operations *state_fops,
496 const struct file_operations *alarm_fops, void *data)
3f86b832 497{
6d855fcd
ZR		 498 printk(KERN_WARNING PREFIX "Deprecated procfs I/F for SBS is loaded,"
499 " please retry with CONFIG_ACPI_PROCFS_POWER cleared\n");
3f86b832
RT		 500 if (!*dir) {
501 *dir = proc_mkdir(dir_name, parent_dir);
502 if (!*dir) {
635227ee 503 return -ENODEV;
3f86b832 504 }
3f86b832
RT		 505 }
506
507 /* 'info' [R] */
cf7acfab
DL		 508 if (info_fops)
509 proc_create_data(ACPI_SBS_FILE_INFO, S_IRUGO, *dir,
510 info_fops, data);
3f86b832
RT		 511
512 /* 'state' [R] */
cf7acfab
DL		 513 if (state_fops)
514 proc_create_data(ACPI_SBS_FILE_STATE, S_IRUGO, *dir,
515 state_fops, data);
3f86b832
RT		 516
517 /* 'alarm' [R/W] */
cf7acfab
DL		 518 if (alarm_fops)
519 proc_create_data(ACPI_SBS_FILE_ALARM, S_IRUGO, *dir,
520 alarm_fops, data);
635227ee 521 return 0;
3f86b832
RT		 522}
523
3f86b832 524/* Smart Battery Interface */
3f86b832
RT		 525static struct proc_dir_entry *acpi_battery_dir = NULL;
526
db1c291a
AS		 527static inline char *acpi_battery_units(struct acpi_battery *battery)
528{
5a21e4fe 529 return acpi_battery_mode(battery) ? " mW" : " mA";
db1c291a
AS		 530}
531
532
3f86b832
RT		 533static int acpi_battery_read_info(struct seq_file *seq, void *offset)
534{
50dd0969 535 struct acpi_battery *battery = seq->private;
72206233 536 struct acpi_sbs *sbs = battery->sbs;
3f86b832
RT		 537 int result = 0;
538
db1c291a 539 mutex_lock(&sbs->lock);
3f86b832 540
db1c291a
AS		 541 seq_printf(seq, "present: %s\n",
542 (battery->present) ? "yes" : "no");
543 if (!battery->present)
72206233 544 goto end;
3f86b832 545
5a21e4fe 546 seq_printf(seq, "design capacity: %i%sh\n",
db1c291a
AS		 547 battery->design_capacity * acpi_battery_scale(battery),
548 acpi_battery_units(battery));
5a21e4fe 549 seq_printf(seq, "last full capacity: %i%sh\n",
db1c291a
AS		 550 battery->full_charge_capacity * acpi_battery_scale(battery),
551 acpi_battery_units(battery));
3f86b832 552 seq_printf(seq, "battery technology: rechargeable\n");
3f86b832 553 seq_printf(seq, "design voltage: %i mV\n",
db1c291a 554 battery->design_voltage * acpi_battery_vscale(battery));
3f86b832
RT		 555 seq_printf(seq, "design capacity warning: unknown\n");
556 seq_printf(seq, "design capacity low: unknown\n");
16698857 557 seq_printf(seq, "cycle count: %i\n", battery->cycle_count);
3f86b832
RT		 558 seq_printf(seq, "capacity granularity 1: unknown\n");
559 seq_printf(seq, "capacity granularity 2: unknown\n");
db1c291a 560 seq_printf(seq, "model number: %s\n", battery->device_name);
3f86b832 561 seq_printf(seq, "serial number: %i\n",
89862e3b 562 battery->serial_number);
3f86b832 563 seq_printf(seq, "battery type: %s\n",
89862e3b 564 battery->device_chemistry);
3f86b832 565 seq_printf(seq, "OEM info: %s\n",
89862e3b 566 battery->manufacturer_name);
3f86b832 567 end:
db1c291a 568 mutex_unlock(&sbs->lock);
635227ee 569 return result;
3f86b832
RT		 570}
571
572static int acpi_battery_info_open_fs(struct inode *inode, struct file *file)
573{
d9dda78b 574 return single_open(file, acpi_battery_read_info, PDE_DATA(inode));
3f86b832
RT		 575}
576
577static int acpi_battery_read_state(struct seq_file *seq, void *offset)
578{
72206233
VL		 579 struct acpi_battery *battery = seq->private;
580 struct acpi_sbs *sbs = battery->sbs;
5a21e4fe 581 int rate;
3f86b832 582
db1c291a
AS		 583 mutex_lock(&sbs->lock);
584 seq_printf(seq, "present: %s\n",
585 (battery->present) ? "yes" : "no");
586 if (!battery->present)
3f86b832 587 goto end;
3f86b832 588
db1c291a
AS		 589 acpi_battery_get_state(battery);
590 seq_printf(seq, "capacity state: %s\n",
591 (battery->state & 0x0010) ? "critical" : "ok");
592 seq_printf(seq, "charging state: %s\n",
7faa144a
AS		 593 (battery->rate_now < 0) ? "discharging" :
594 ((battery->rate_now > 0) ? "charging" : "charged"));
595 rate = abs(battery->rate_now) * acpi_battery_ipscale(battery);
5a21e4fe
AS		 596 rate *= (acpi_battery_mode(battery))?(battery->voltage_now *
597 acpi_battery_vscale(battery)/1000):1;
598 seq_printf(seq, "present rate: %d%s\n", rate,
599 acpi_battery_units(battery));
600 seq_printf(seq, "remaining capacity: %i%sh\n",
db1c291a
AS		 601 battery->capacity_now * acpi_battery_scale(battery),
602 acpi_battery_units(battery));
3f86b832 603 seq_printf(seq, "present voltage: %i mV\n",
db1c291a 604 battery->voltage_now * acpi_battery_vscale(battery));
3f86b832
RT		 605
606 end:
db1c291a 607 mutex_unlock(&sbs->lock);
5a21e4fe 608 return 0;
3f86b832
RT		 609}
610
611static int acpi_battery_state_open_fs(struct inode *inode, struct file *file)
612{
d9dda78b 613 return single_open(file, acpi_battery_read_state, PDE_DATA(inode));
3f86b832
RT		 614}
615
616static int acpi_battery_read_alarm(struct seq_file *seq, void *offset)
617{
50dd0969 618 struct acpi_battery *battery = seq->private;
72206233 619 struct acpi_sbs *sbs = battery->sbs;
3f86b832 620 int result = 0;
3f86b832 621
db1c291a 622 mutex_lock(&sbs->lock);
3f86b832 623
89862e3b 624 if (!battery->present) {
3f86b832
RT		 625 seq_printf(seq, "present: no\n");
626 goto end;
627 }
628
db1c291a 629 acpi_battery_get_alarm(battery);
3f86b832 630 seq_printf(seq, "alarm: ");
db1c291a 631 if (battery->alarm_capacity)
5a21e4fe 632 seq_printf(seq, "%i%sh\n",
db1c291a
AS		 633 battery->alarm_capacity *
634 acpi_battery_scale(battery),
635 acpi_battery_units(battery));
636 else
3f86b832 637 seq_printf(seq, "disabled\n");
3f86b832 638 end:
db1c291a 639 mutex_unlock(&sbs->lock);
635227ee 640 return result;
3f86b832
RT		 641}
642
643static ssize_t
644acpi_battery_write_alarm(struct file *file, const char __user * buffer,
645 size_t count, loff_t * ppos)
646{
50dd0969
JE		 647 struct seq_file *seq = file->private_data;
648 struct acpi_battery *battery = seq->private;
72206233 649 struct acpi_sbs *sbs = battery->sbs;
3f86b832 650 char alarm_string[12] = { '\0' };
db1c291a
AS		 651 int result = 0;
652 mutex_lock(&sbs->lock);
89862e3b 653 if (!battery->present) {
3f86b832
RT		 654 result = -ENODEV;
655 goto end;
656 }
3f86b832
RT		 657 if (count > sizeof(alarm_string) - 1) {
658 result = -EINVAL;
659 goto end;
660 }
3f86b832
RT		 661 if (copy_from_user(alarm_string, buffer, count)) {
662 result = -EFAULT;
663 goto end;
664 }
3f86b832 665 alarm_string[count] = 0;
94f6c086
AS		 666 battery->alarm_capacity = simple_strtoul(alarm_string, NULL, 0) /
667 acpi_battery_scale(battery);
db1c291a 668 acpi_battery_set_alarm(battery);
3f86b832 669 end:
db1c291a
AS		 670 mutex_unlock(&sbs->lock);
671 if (result)
635227ee 672 return result;
db1c291a 673 return count;
3f86b832
RT		 674}
675
676static int acpi_battery_alarm_open_fs(struct inode *inode, struct file *file)
677{
d9dda78b 678 return single_open(file, acpi_battery_read_alarm, PDE_DATA(inode));
3f86b832
RT		 679}
680
070d8eb1 681static const struct file_operations acpi_battery_info_fops = {
3f86b832
RT		 682 .open = acpi_battery_info_open_fs,
683 .read = seq_read,
684 .llseek = seq_lseek,
685 .release = single_release,
686 .owner = THIS_MODULE,
687};
688
070d8eb1 689static const struct file_operations acpi_battery_state_fops = {
3f86b832
RT		 690 .open = acpi_battery_state_open_fs,
691 .read = seq_read,
692 .llseek = seq_lseek,
693 .release = single_release,
694 .owner = THIS_MODULE,
695};
696
070d8eb1 697static const struct file_operations acpi_battery_alarm_fops = {
3f86b832
RT		 698 .open = acpi_battery_alarm_open_fs,
699 .read = seq_read,
700 .write = acpi_battery_write_alarm,
701 .llseek = seq_lseek,
702 .release = single_release,
703 .owner = THIS_MODULE,
704};
705
706/* Legacy AC Adapter Interface */
707
708static struct proc_dir_entry *acpi_ac_dir = NULL;
709
710static int acpi_ac_read_state(struct seq_file *seq, void *offset)
711{
3f86b832 712
db1c291a 713 struct acpi_sbs *sbs = seq->private;
3f86b832 714
db1c291a 715 mutex_lock(&sbs->lock);
3f86b832
RT		 716
717 seq_printf(seq, "state: %s\n",
89862e3b 718 sbs->charger_present ? "on-line" : "off-line");
3f86b832 719
db1c291a 720 mutex_unlock(&sbs->lock);
635227ee 721 return 0;
3f86b832
RT		 722}
723
724static int acpi_ac_state_open_fs(struct inode *inode, struct file *file)
725{
d9dda78b 726 return single_open(file, acpi_ac_read_state, PDE_DATA(inode));
3f86b832
RT		 727}
728
070d8eb1 729static const struct file_operations acpi_ac_state_fops = {
3f86b832
RT		 730 .open = acpi_ac_state_open_fs,
731 .read = seq_read,
732 .llseek = seq_lseek,
733 .release = single_release,
734 .owner = THIS_MODULE,
735};
736
66e4b72b
AS		 737#endif
738
3f86b832
RT		 739/* --------------------------------------------------------------------------
740 Driver Interface
741 -------------------------------------------------------------------------- */
db1c291a 742static int acpi_battery_read(struct acpi_battery *battery)
3f86b832 743{
db1c291a
AS		 744 int result = 0, saved_present = battery->present;
745 u16 state;
3f86b832 746
db1c291a
AS		 747 if (battery->sbs->manager_present) {
748 result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD,
749 ACPI_SBS_MANAGER, 0x01, (u8 *)&state);
750 if (!result)
751 battery->present = state & (1 << battery->id);
752 state &= 0x0fff;
753 state |= 1 << (battery->id + 12);
754 acpi_smbus_write(battery->sbs->hc, SMBUS_WRITE_WORD,
755 ACPI_SBS_MANAGER, 0x01, (u8 *)&state, 2);
756 } else if (battery->id == 0)
757 battery->present = 1;
758 if (result || !battery->present)
759 return result;
3f86b832 760
db1c291a
AS		 761 if (saved_present != battery->present) {
762 battery->update_time = 0;
763 result = acpi_battery_get_info(battery);
764 if (result)
765 return result;
766 }
767 result = acpi_battery_get_state(battery);
768 return result;
769}
3f86b832 770
94f6c086 771/* Smart Battery */
db1c291a
AS		 772static int acpi_battery_add(struct acpi_sbs *sbs, int id)
773{
db1c291a 774 struct acpi_battery *battery = &sbs->battery[id];
94f6c086
AS		 775 int result;
776
3f86b832
RT		 777 battery->id = id;
778 battery->sbs = sbs;
db1c291a
AS		 779 result = acpi_battery_read(battery);
780 if (result)
781 return result;
3f86b832 782
db1c291a 783 sprintf(battery->name, ACPI_BATTERY_DIR_NAME, id);
fdcedbba 784#ifdef CONFIG_ACPI_PROCFS_POWER
db1c291a
AS		 785 acpi_sbs_add_fs(&battery->proc_entry, acpi_battery_dir,
786 battery->name, &acpi_battery_info_fops,
787 &acpi_battery_state_fops, &acpi_battery_alarm_fops,
788 battery);
66e4b72b 789#endif
94f6c086
AS		 790 battery->bat.name = battery->name;
791 battery->bat.type = POWER_SUPPLY_TYPE_BATTERY;
792 if (!acpi_battery_mode(battery)) {
793 battery->bat.properties = sbs_charge_battery_props;
794 battery->bat.num_properties =
795 ARRAY_SIZE(sbs_charge_battery_props);
796 } else {
797 battery->bat.properties = sbs_energy_battery_props;
798 battery->bat.num_properties =
799 ARRAY_SIZE(sbs_energy_battery_props);
800 }
801 battery->bat.get_property = acpi_sbs_battery_get_property;
802 result = power_supply_register(&sbs->device->dev, &battery->bat);
037cbc63
JG		 803 if (result)
804 goto end;
805 result = device_create_file(battery->bat.dev, &alarm_attr);
806 if (result)
807 goto end;
808 battery->have_sysfs_alarm = 1;
809 end:
72206233 810 printk(KERN_INFO PREFIX "%s [%s]: Battery Slot [%s] (battery %s)\n",
db1c291a 811 ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device),
bbafbecb 812 battery->name, battery->present ? "present" : "absent");
635227ee 813 return result;
3f86b832
RT		 814}
815
816static void acpi_battery_remove(struct acpi_sbs *sbs, int id)
817{
037cbc63 818 struct acpi_battery *battery = &sbs->battery[id];
c19bdb61 819
037cbc63
JG		 820 if (battery->bat.dev) {
821 if (battery->have_sysfs_alarm)
822 device_remove_file(battery->bat.dev, &alarm_attr);
823 power_supply_unregister(&battery->bat);
3f86b832 824 }
c2e46d2e 825#ifdef CONFIG_ACPI_PROCFS_POWER
a8ca16ea
DH		 826 proc_remove(battery->proc_entry);
827 battery->proc_entry = NULL;
66e4b72b 828#endif
3f86b832
RT		 829}
830
db1c291a 831static int acpi_charger_add(struct acpi_sbs *sbs)
3f86b832
RT		 832{
833 int result;
834
3f86b832 835 result = acpi_ac_get_present(sbs);
db1c291a 836 if (result)
3f86b832 837 goto end;
fdcedbba 838#ifdef CONFIG_ACPI_PROCFS_POWER
db1c291a
AS		 839 result = acpi_sbs_add_fs(&sbs->charger_entry, acpi_ac_dir,
840 ACPI_AC_DIR_NAME, NULL,
841 &acpi_ac_state_fops, NULL, sbs);
842 if (result)
3f86b832 843 goto end;
66e4b72b 844#endif
94f6c086
AS		 845 sbs->charger.name = "sbs-charger";
846 sbs->charger.type = POWER_SUPPLY_TYPE_MAINS;
847 sbs->charger.properties = sbs_ac_props;
848 sbs->charger.num_properties = ARRAY_SIZE(sbs_ac_props);
849 sbs->charger.get_property = sbs_get_ac_property;
850 power_supply_register(&sbs->device->dev, &sbs->charger);
72206233
VL		 851 printk(KERN_INFO PREFIX "%s [%s]: AC Adapter [%s] (%s)\n",
852 ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device),
89862e3b 853 ACPI_AC_DIR_NAME, sbs->charger_present ? "on-line" : "off-line");
3f86b832 854 end:
635227ee 855 return result;
3f86b832
RT		 856}
857
db1c291a 858static void acpi_charger_remove(struct acpi_sbs *sbs)
3f86b832 859{
94f6c086
AS		 860 if (sbs->charger.dev)
861 power_supply_unregister(&sbs->charger);
fdcedbba 862#ifdef CONFIG_ACPI_PROCFS_POWER
a8ca16ea
DH		 863 proc_remove(sbs->charger_entry);
864 sbs->charger_entry = NULL;
66e4b72b 865#endif
3f86b832
RT		 866}
867
e5685b9d 868static void acpi_sbs_callback(void *context)
3f86b832 869{
db1c291a
AS		 870 int id;
871 struct acpi_sbs *sbs = context;
872 struct acpi_battery *bat;
873 u8 saved_charger_state = sbs->charger_present;
874 u8 saved_battery_state;
875 acpi_ac_get_present(sbs);
876 if (sbs->charger_present != saved_charger_state) {
94f6c086 877#ifdef CONFIG_ACPI_PROC_EVENT
db1c291a
AS		 878 acpi_bus_generate_proc_event4(ACPI_AC_CLASS, ACPI_AC_DIR_NAME,
879 ACPI_SBS_NOTIFY_STATUS,
880 sbs->charger_present);
94f6c086
AS		 881#endif
882 kobject_uevent(&sbs->charger.dev->kobj, KOBJ_CHANGE);
3f86b832 883 }
db1c291a
AS		 884 if (sbs->manager_present) {
885 for (id = 0; id < MAX_SBS_BAT; ++id) {
886 if (!(sbs->batteries_supported & (1 << id)))
887 continue;
888 bat = &sbs->battery[id];
889 saved_battery_state = bat->present;
890 acpi_battery_read(bat);
891 if (saved_battery_state == bat->present)
892 continue;
94f6c086 893#ifdef CONFIG_ACPI_PROC_EVENT
db1c291a
AS		 894 acpi_bus_generate_proc_event4(ACPI_BATTERY_CLASS,
895 bat->name,
896 ACPI_SBS_NOTIFY_STATUS,
897 bat->present);
94f6c086
AS		 898#endif
899 kobject_uevent(&bat->bat.dev->kobj, KOBJ_CHANGE);
3f86b832 900 }
3f86b832 901 }
3f86b832
RT		 902}
903
3f86b832
RT		 904static int acpi_sbs_add(struct acpi_device *device)
905{
db1c291a
AS		 906 struct acpi_sbs *sbs;
907 int result = 0;
6d15702c 908 int id;
3f86b832 909
36bcbec7 910 sbs = kzalloc(sizeof(struct acpi_sbs), GFP_KERNEL);
3f86b832 911 if (!sbs) {
72206233
VL		 912 result = -ENOMEM;
913 goto end;
3f86b832 914 }
3f86b832 915
db1c291a 916 mutex_init(&sbs->lock);
72206233 917
91087dfa 918 sbs->hc = acpi_driver_data(device->parent);
db1c291a 919 sbs->device = device;
3f86b832
RT		 920 strcpy(acpi_device_name(device), ACPI_SBS_DEVICE_NAME);
921 strcpy(acpi_device_class(device), ACPI_SBS_CLASS);
db89b4f0 922 device->driver_data = sbs;
3f86b832 923
db1c291a 924 result = acpi_charger_add(sbs);
72206233
VL		 925 if (result)
926 goto end;
3f86b832 927
db1c291a
AS		 928 result = acpi_manager_get_info(sbs);
929 if (!result) {
930 sbs->manager_present = 1;
931 for (id = 0; id < MAX_SBS_BAT; ++id)
932 if ((sbs->batteries_supported & (1 << id)))
933 acpi_battery_add(sbs, id);
934 } else
935 acpi_battery_add(sbs, 0);
936 acpi_smbus_register_callback(sbs->hc, acpi_sbs_callback, sbs);
3f86b832 937 end:
db1c291a 938 if (result)
51fac838 939 acpi_sbs_remove(device);
635227ee 940 return result;
3f86b832
RT		 941}
942
51fac838 943static int acpi_sbs_remove(struct acpi_device *device)
3f86b832 944{
cece9014 945 struct acpi_sbs *sbs;
3f86b832
RT		 946 int id;
947
db1c291a 948 if (!device)
963497c1 949 return -EINVAL;
72206233 950 sbs = acpi_driver_data(device);
db1c291a 951 if (!sbs)
635227ee 952 return -EINVAL;
db1c291a
AS		 953 mutex_lock(&sbs->lock);
954 acpi_smbus_unregister_callback(sbs->hc);
955 for (id = 0; id < MAX_SBS_BAT; ++id)
3f86b832 956 acpi_battery_remove(sbs, id);
db1c291a
AS		 957 acpi_charger_remove(sbs);
958 mutex_unlock(&sbs->lock);
959 mutex_destroy(&sbs->lock);
3f86b832 960 kfree(sbs);
635227ee 961 return 0;
3f86b832
RT		 962}
963
72206233
VL		 964static void acpi_sbs_rmdirs(void)
965{
fdcedbba 966#ifdef CONFIG_ACPI_PROCFS_POWER
72206233
VL		 967 if (acpi_ac_dir) {
968 acpi_unlock_ac_dir(acpi_ac_dir);
969 acpi_ac_dir = NULL;
970 }
971 if (acpi_battery_dir) {
972 acpi_unlock_battery_dir(acpi_battery_dir);
973 acpi_battery_dir = NULL;
974 }
66e4b72b 975#endif
72206233
VL		 976}
977
90692404 978#ifdef CONFIG_PM_SLEEP
d202f77d 979static int acpi_sbs_resume(struct device *dev)
72206233
VL		 980{
981 struct acpi_sbs *sbs;
d202f77d 982 if (!dev)
72206233 983 return -EINVAL;
d202f77d 984 sbs = to_acpi_device(dev)->driver_data;
db1c291a 985 acpi_sbs_callback(sbs);
72206233
VL		 986 return 0;
987}
90692404 988#endif
72206233 989
d202f77d
RW		 990static SIMPLE_DEV_PM_OPS(acpi_sbs_pm, NULL, acpi_sbs_resume);
991
94f6c086
AS		 992static struct acpi_driver acpi_sbs_driver = {
993 .name = "sbs",
994 .class = ACPI_SBS_CLASS,
995 .ids = sbs_device_ids,
996 .ops = {
997 .add = acpi_sbs_add,
998 .remove = acpi_sbs_remove,
94f6c086 999 },
d202f77d 1000 .drv.pm = &acpi_sbs_pm,
94f6c086
AS		 1001};
1002
3f86b832
RT		 1003static int __init acpi_sbs_init(void)
1004{
1005 int result = 0;
1006
b20d2aeb
LB		 1007 if (acpi_disabled)
1008 return -ENODEV;
fdcedbba 1009#ifdef CONFIG_ACPI_PROCFS_POWER
3f86b832 1010 acpi_ac_dir = acpi_lock_ac_dir();
94f6c086 1011 if (!acpi_ac_dir)
635227ee 1012 return -ENODEV;
3f86b832
RT		 1013 acpi_battery_dir = acpi_lock_battery_dir();
1014 if (!acpi_battery_dir) {
72206233 1015 acpi_sbs_rmdirs();
635227ee 1016 return -ENODEV;
3f86b832 1017 }
66e4b72b 1018#endif
3f86b832
RT		 1019 result = acpi_bus_register_driver(&acpi_sbs_driver);
1020 if (result < 0) {
72206233 1021 acpi_sbs_rmdirs();
635227ee 1022 return -ENODEV;
3f86b832 1023 }
635227ee 1024 return 0;
3f86b832
RT		 1025}
1026
1027static void __exit acpi_sbs_exit(void)
1028{
3f86b832 1029 acpi_bus_unregister_driver(&acpi_sbs_driver);
72206233 1030 acpi_sbs_rmdirs();
635227ee 1031 return;
3f86b832
RT		 1032}
1033
1034module_init(acpi_sbs_init);
1035module_exit(acpi_sbs_exit);
kernel source for telekom puls (alcatel/mediatek)