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ACPI: battery: add power_{now,avg} properties to power_class
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / acpi / sbs.c
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3f86b832 1/*
db1c291a 2 * sbs.c - ACPI Smart Battery System Driver ($Revision: 2.0 $)
3f86b832 3 *
db1c291a
AS		 4 * Copyright (c) 2007 Alexey Starikovskiy <astarikovskiy@suse.de>
5 * Copyright (c) 2005-2007 Vladimir Lebedev <vladimir.p.lebedev@intel.com>
3f86b832
RT		 6 * Copyright (c) 2005 Rich Townsend <rhdt@bartol.udel.edu>
7 *
8 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or (at
13 * your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License along
21 * with this program; if not, write to the Free Software Foundation, Inc.,
22 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
23 *
24 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
25 */
26
27#include <linux/init.h>
28#include <linux/module.h>
29#include <linux/moduleparam.h>
30#include <linux/kernel.h>
94f6c086 31
fdcedbba 32#ifdef CONFIG_ACPI_PROCFS_POWER
3f86b832
RT		 33#include <linux/proc_fs.h>
34#include <linux/seq_file.h>
35#include <asm/uaccess.h>
66e4b72b 36#endif
94f6c086 37
3f86b832 38#include <linux/acpi.h>
6d15702c 39#include <linux/timer.h>
72206233 40#include <linux/jiffies.h>
3f86b832
RT		 41#include <linux/delay.h>
42
97749cd9 43#ifdef CONFIG_ACPI_SYSFS_POWER
94f6c086 44#include <linux/power_supply.h>
97749cd9 45#endif
94f6c086 46
91087dfa
AS		 47#include "sbshc.h"
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 {
97749cd9 85#ifdef CONFIG_ACPI_SYSFS_POWER
94f6c086 86 struct power_supply bat;
97749cd9 87#endif
3f86b832 88 struct acpi_sbs *sbs;
fdcedbba 89#ifdef CONFIG_ACPI_PROCFS_POWER
89862e3b 90 struct proc_dir_entry *proc_entry;
66e4b72b 91#endif
db1c291a
AS		 92 unsigned long update_time;
93 char name[8];
89862e3b
AS		 94 char manufacturer_name[ACPI_SBS_BLOCK_MAX];
95 char device_name[ACPI_SBS_BLOCK_MAX];
96 char device_chemistry[ACPI_SBS_BLOCK_MAX];
94f6c086 97 u16 alarm_capacity;
89862e3b
AS		 98 u16 full_charge_capacity;
99 u16 design_capacity;
100 u16 design_voltage;
101 u16 serial_number;
db1c291a
AS		 102 u16 cycle_count;
103 u16 temp_now;
89862e3b 104 u16 voltage_now;
7faa144a
AS		 105 s16 rate_now;
106 s16 rate_avg;
89862e3b 107 u16 capacity_now;
db1c291a 108 u16 state_of_charge;
89862e3b 109 u16 state;
89862e3b 110 u16 mode;
db1c291a 111 u16 spec;
89862e3b 112 u8 id;
89862e3b 113 u8 present:1;
037cbc63 114 u8 have_sysfs_alarm:1;
3f86b832
RT		 115};
116
94f6c086
AS		 117#define to_acpi_battery(x) container_of(x, struct acpi_battery, bat);
118
3f86b832 119struct acpi_sbs {
97749cd9 120#ifdef CONFIG_ACPI_SYSFS_POWER
94f6c086 121 struct power_supply charger;
97749cd9 122#endif
3f86b832 123 struct acpi_device *device;
91087dfa 124 struct acpi_smb_hc *hc;
db1c291a 125 struct mutex lock;
fdcedbba 126#ifdef CONFIG_ACPI_PROCFS_POWER
db1c291a 127 struct proc_dir_entry *charger_entry;
66e4b72b 128#endif
3f86b832 129 struct acpi_battery battery[MAX_SBS_BAT];
db1c291a 130 u8 batteries_supported:4;
89862e3b
AS		 131 u8 manager_present:1;
132 u8 charger_present:1;
3f86b832
RT		 133};
134
94f6c086
AS		 135#define to_acpi_sbs(x) container_of(x, struct acpi_sbs, charger)
136
db1c291a 137static inline int battery_scale(int log)
72206233 138{
db1c291a
AS		 139 int scale = 1;
140 while (log--)
141 scale *= 10;
142 return scale;
72206233
VL		 143}
144
db1c291a 145static inline int acpi_battery_vscale(struct acpi_battery *battery)
72206233 146{
db1c291a 147 return battery_scale((battery->spec & 0x0f00) >> 8);
72206233
VL		 148}
149
db1c291a 150static inline int acpi_battery_ipscale(struct acpi_battery *battery)
72206233 151{
db1c291a 152 return battery_scale((battery->spec & 0xf000) >> 12);
72206233
VL		 153}
154
db1c291a 155static inline int acpi_battery_mode(struct acpi_battery *battery)
72206233 156{
db1c291a 157 return (battery->mode & 0x8000);
72206233 158}
3f86b832 159
db1c291a 160static inline int acpi_battery_scale(struct acpi_battery *battery)
3f86b832 161{
db1c291a
AS		 162 return (acpi_battery_mode(battery) ? 10 : 1) *
163 acpi_battery_ipscale(battery);
3f86b832
RT		 164}
165
97749cd9 166#ifdef CONFIG_ACPI_SYSFS_POWER
94f6c086
AS		 167static int sbs_get_ac_property(struct power_supply *psy,
168 enum power_supply_property psp,
169 union power_supply_propval *val)
170{
171 struct acpi_sbs *sbs = to_acpi_sbs(psy);
172 switch (psp) {
173 case POWER_SUPPLY_PROP_ONLINE:
174 val->intval = sbs->charger_present;
175 break;
176 default:
177 return -EINVAL;
178 }
179 return 0;
180}
181
182static int acpi_battery_technology(struct acpi_battery *battery)
183{
184 if (!strcasecmp("NiCd", battery->device_chemistry))
185 return POWER_SUPPLY_TECHNOLOGY_NiCd;
186 if (!strcasecmp("NiMH", battery->device_chemistry))
187 return POWER_SUPPLY_TECHNOLOGY_NiMH;
188 if (!strcasecmp("LION", battery->device_chemistry))
189 return POWER_SUPPLY_TECHNOLOGY_LION;
190 if (!strcasecmp("LiP", battery->device_chemistry))
191 return POWER_SUPPLY_TECHNOLOGY_LIPO;
192 return POWER_SUPPLY_TECHNOLOGY_UNKNOWN;
193}
194
195static int acpi_sbs_battery_get_property(struct power_supply *psy,
196 enum power_supply_property psp,
197 union power_supply_propval *val)
198{
199 struct acpi_battery *battery = to_acpi_battery(psy);
200
201 if ((!battery->present) && psp != POWER_SUPPLY_PROP_PRESENT)
202 return -ENODEV;
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;
218 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
219 val->intval = battery->design_voltage *
220 acpi_battery_vscale(battery) * 1000;
221 break;
222 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
223 val->intval = battery->voltage_now *
224 acpi_battery_vscale(battery) * 1000;
225 break;
226 case POWER_SUPPLY_PROP_CURRENT_NOW:
7faa144a
AS		 227 case POWER_SUPPLY_PROP_POWER_NOW:
228 val->intval = abs(battery->rate_now) *
94f6c086
AS		 229 acpi_battery_ipscale(battery) * 1000;
230 break;
231 case POWER_SUPPLY_PROP_CURRENT_AVG:
7faa144a
AS		 232 case POWER_SUPPLY_PROP_POWER_AVG:
233 val->intval = abs(battery->rate_avg) *
94f6c086
AS		 234 acpi_battery_ipscale(battery) * 1000;
235 break;
236 case POWER_SUPPLY_PROP_CAPACITY:
237 val->intval = battery->state_of_charge;
238 break;
239 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
240 case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
241 val->intval = battery->design_capacity *
242 acpi_battery_scale(battery) * 1000;
243 break;
244 case POWER_SUPPLY_PROP_CHARGE_FULL:
245 case POWER_SUPPLY_PROP_ENERGY_FULL:
246 val->intval = battery->full_charge_capacity *
247 acpi_battery_scale(battery) * 1000;
248 break;
249 case POWER_SUPPLY_PROP_CHARGE_NOW:
250 case POWER_SUPPLY_PROP_ENERGY_NOW:
251 val->intval = battery->capacity_now *
252 acpi_battery_scale(battery) * 1000;
253 break;
254 case POWER_SUPPLY_PROP_TEMP:
255 val->intval = battery->temp_now - 2730; // dK -> dC
256 break;
257 case POWER_SUPPLY_PROP_MODEL_NAME:
258 val->strval = battery->device_name;
259 break;
260 case POWER_SUPPLY_PROP_MANUFACTURER:
261 val->strval = battery->manufacturer_name;
262 break;
263 default:
264 return -EINVAL;
265 }
266 return 0;
267}
268
269static enum power_supply_property sbs_ac_props[] = {
270 POWER_SUPPLY_PROP_ONLINE,
271};
272
273static enum power_supply_property sbs_charge_battery_props[] = {
274 POWER_SUPPLY_PROP_STATUS,
275 POWER_SUPPLY_PROP_PRESENT,
276 POWER_SUPPLY_PROP_TECHNOLOGY,
277 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
278 POWER_SUPPLY_PROP_VOLTAGE_NOW,
279 POWER_SUPPLY_PROP_CURRENT_NOW,
280 POWER_SUPPLY_PROP_CURRENT_AVG,
281 POWER_SUPPLY_PROP_CAPACITY,
282 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
283 POWER_SUPPLY_PROP_CHARGE_FULL,
284 POWER_SUPPLY_PROP_CHARGE_NOW,
285 POWER_SUPPLY_PROP_TEMP,
286 POWER_SUPPLY_PROP_MODEL_NAME,
287 POWER_SUPPLY_PROP_MANUFACTURER,
288};
289
290static enum power_supply_property sbs_energy_battery_props[] = {
291 POWER_SUPPLY_PROP_STATUS,
292 POWER_SUPPLY_PROP_PRESENT,
293 POWER_SUPPLY_PROP_TECHNOLOGY,
294 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
295 POWER_SUPPLY_PROP_VOLTAGE_NOW,
296 POWER_SUPPLY_PROP_CURRENT_NOW,
297 POWER_SUPPLY_PROP_CURRENT_AVG,
7faa144a
AS		 298 POWER_SUPPLY_PROP_POWER_NOW,
299 POWER_SUPPLY_PROP_POWER_AVG,
94f6c086
AS		 300 POWER_SUPPLY_PROP_CAPACITY,
301 POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
302 POWER_SUPPLY_PROP_ENERGY_FULL,
303 POWER_SUPPLY_PROP_ENERGY_NOW,
304 POWER_SUPPLY_PROP_TEMP,
305 POWER_SUPPLY_PROP_MODEL_NAME,
306 POWER_SUPPLY_PROP_MANUFACTURER,
307};
7faa144a 308
97749cd9 309#endif
94f6c086 310
db1c291a
AS		 311/* --------------------------------------------------------------------------
312 Smart Battery System Management
313 -------------------------------------------------------------------------- */
3f86b832 314
db1c291a
AS		 315struct acpi_battery_reader {
316 u8 command; /* command for battery */
317 u8 mode; /* word or block? */
318 size_t offset; /* offset inside struct acpi_sbs_battery */
319};
3f86b832 320
db1c291a
AS		 321static struct acpi_battery_reader info_readers[] = {
322 {0x01, SMBUS_READ_WORD, offsetof(struct acpi_battery, alarm_capacity)},
323 {0x03, SMBUS_READ_WORD, offsetof(struct acpi_battery, mode)},
324 {0x10, SMBUS_READ_WORD, offsetof(struct acpi_battery, full_charge_capacity)},
325 {0x17, SMBUS_READ_WORD, offsetof(struct acpi_battery, cycle_count)},
326 {0x18, SMBUS_READ_WORD, offsetof(struct acpi_battery, design_capacity)},
327 {0x19, SMBUS_READ_WORD, offsetof(struct acpi_battery, design_voltage)},
328 {0x1a, SMBUS_READ_WORD, offsetof(struct acpi_battery, spec)},
329 {0x1c, SMBUS_READ_WORD, offsetof(struct acpi_battery, serial_number)},
330 {0x20, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, manufacturer_name)},
331 {0x21, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, device_name)},
332 {0x22, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, device_chemistry)},
333};
3f86b832 334
db1c291a
AS		 335static struct acpi_battery_reader state_readers[] = {
336 {0x08, SMBUS_READ_WORD, offsetof(struct acpi_battery, temp_now)},
337 {0x09, SMBUS_READ_WORD, offsetof(struct acpi_battery, voltage_now)},
7faa144a
AS		 338 {0x0a, SMBUS_READ_WORD, offsetof(struct acpi_battery, rate_now)},
339 {0x0b, SMBUS_READ_WORD, offsetof(struct acpi_battery, rate_avg)},
db1c291a
AS		 340 {0x0f, SMBUS_READ_WORD, offsetof(struct acpi_battery, capacity_now)},
341 {0x0e, SMBUS_READ_WORD, offsetof(struct acpi_battery, state_of_charge)},
342 {0x16, SMBUS_READ_WORD, offsetof(struct acpi_battery, state)},
343};
3f86b832 344
db1c291a 345static int acpi_manager_get_info(struct acpi_sbs *sbs)
3f86b832 346{
3f86b832 347 int result = 0;
db1c291a 348 u16 battery_system_info;
3f86b832 349
db1c291a 350 result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER,
94f6c086 351 0x04, (u8 *)&battery_system_info);
db1c291a
AS		 352 if (!result)
353 sbs->batteries_supported = battery_system_info & 0x000f;
635227ee 354 return result;
3f86b832
RT		 355}
356
357static int acpi_battery_get_info(struct acpi_battery *battery)
358{
db1c291a 359 int i, result = 0;
3f86b832 360
db1c291a 361 for (i = 0; i < ARRAY_SIZE(info_readers); ++i) {
94f6c086
AS		 362 result = acpi_smbus_read(battery->sbs->hc,
363 info_readers[i].mode,
364 ACPI_SBS_BATTERY,
365 info_readers[i].command,
366 (u8 *) battery +
367 info_readers[i].offset);
db1c291a
AS		 368 if (result)
369 break;
3f86b832 370 }
635227ee 371 return result;
3f86b832
RT		 372}
373
3f86b832
RT		 374static int acpi_battery_get_state(struct acpi_battery *battery)
375{
db1c291a 376 int i, result = 0;
3f86b832 377
94f6c086
AS		 378 if (battery->update_time &&
379 time_before(jiffies, battery->update_time +
db1c291a
AS		 380 msecs_to_jiffies(cache_time)))
381 return 0;
382 for (i = 0; i < ARRAY_SIZE(state_readers); ++i) {
383 result = acpi_smbus_read(battery->sbs->hc,
384 state_readers[i].mode,
385 ACPI_SBS_BATTERY,
386 state_readers[i].command,
387 (u8 *)battery +
388 state_readers[i].offset);
389 if (result)
3f86b832 390 goto end;
3f86b832 391 }
3f86b832 392 end:
db1c291a 393 battery->update_time = jiffies;
635227ee 394 return result;
3f86b832
RT		 395}
396
db1c291a 397static int acpi_battery_get_alarm(struct acpi_battery *battery)
3f86b832 398{
db1c291a
AS		 399 return acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD,
400 ACPI_SBS_BATTERY, 0x01,
94f6c086 401 (u8 *)&battery->alarm_capacity);
3f86b832
RT		 402}
403
db1c291a 404static int acpi_battery_set_alarm(struct acpi_battery *battery)
3f86b832 405{
db1c291a 406 struct acpi_sbs *sbs = battery->sbs;
94f6c086
AS		 407 u16 value, sel = 1 << (battery->id + 12);
408
409 int ret;
410
3f86b832 411
db1c291a 412 if (sbs->manager_present) {
94f6c086 413 ret = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER,
db1c291a 414 0x01, (u8 *)&value);
94f6c086
AS		 415 if (ret)
416 goto end;
417 if ((value & 0xf000) != sel) {
418 value &= 0x0fff;
419 value |= sel;
420 ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD,
421 ACPI_SBS_MANAGER,
422 0x01, (u8 *)&value, 2);
423 if (ret)
424 goto end;
425 }
3f86b832 426 }
94f6c086
AS		 427 ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, ACPI_SBS_BATTERY,
428 0x01, (u8 *)&battery->alarm_capacity, 2);
429 end:
430 return ret;
3f86b832
RT		 431}
432
433static int acpi_ac_get_present(struct acpi_sbs *sbs)
434{
db1c291a
AS		 435 int result;
436 u16 status;
3f86b832 437
db1c291a
AS		 438 result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_CHARGER,
439 0x13, (u8 *) & status);
440 if (!result)
441 sbs->charger_present = (status >> 15) & 0x1;
635227ee 442 return result;
3f86b832
RT		 443}
444
97749cd9 445#ifdef CONFIG_ACPI_SYSFS_POWER
8bd95532
AS		 446static ssize_t acpi_battery_alarm_show(struct device *dev,
447 struct device_attribute *attr,
448 char *buf)
449{
450 struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev));
451 acpi_battery_get_alarm(battery);
452 return sprintf(buf, "%d\n", battery->alarm_capacity *
453 acpi_battery_scale(battery) * 1000);
454}
455
456static ssize_t acpi_battery_alarm_store(struct device *dev,
457 struct device_attribute *attr,
458 const char *buf, size_t count)
459{
460 unsigned long x;
461 struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev));
462 if (sscanf(buf, "%ld\n", &x) == 1)
463 battery->alarm_capacity = x /
464 (1000 * acpi_battery_scale(battery));
465 if (battery->present)
466 acpi_battery_set_alarm(battery);
467 return count;
468}
469
470static struct device_attribute alarm_attr = {
01e8ef11 471 .attr = {.name = "alarm", .mode = 0644},
8bd95532
AS		 472 .show = acpi_battery_alarm_show,
473 .store = acpi_battery_alarm_store,
474};
97749cd9 475#endif
8bd95532 476
3f86b832
RT		 477/* --------------------------------------------------------------------------
478 FS Interface (/proc/acpi)
479 -------------------------------------------------------------------------- */
480
fdcedbba 481#ifdef CONFIG_ACPI_PROCFS_POWER
3f86b832 482/* Generic Routines */
3f86b832 483static int
db1c291a 484acpi_sbs_add_fs(struct proc_dir_entry **dir,
94f6c086
AS		 485 struct proc_dir_entry *parent_dir,
486 char *dir_name,
487 struct file_operations *info_fops,
488 struct file_operations *state_fops,
489 struct file_operations *alarm_fops, void *data)
3f86b832 490{
3f86b832
RT		 491 if (!*dir) {
492 *dir = proc_mkdir(dir_name, parent_dir);
493 if (!*dir) {
635227ee 494 return -ENODEV;
3f86b832
RT		 495 }
496 (*dir)->owner = THIS_MODULE;
497 }
498
499 /* 'info' [R] */
cf7acfab
DL		 500 if (info_fops)
501 proc_create_data(ACPI_SBS_FILE_INFO, S_IRUGO, *dir,
502 info_fops, data);
3f86b832
RT		 503
504 /* 'state' [R] */
cf7acfab
DL		 505 if (state_fops)
506 proc_create_data(ACPI_SBS_FILE_STATE, S_IRUGO, *dir,
507 state_fops, data);
3f86b832
RT		 508
509 /* 'alarm' [R/W] */
cf7acfab
DL		 510 if (alarm_fops)
511 proc_create_data(ACPI_SBS_FILE_ALARM, S_IRUGO, *dir,
512 alarm_fops, data);
635227ee 513 return 0;
3f86b832
RT		 514}
515
516static void
db1c291a 517acpi_sbs_remove_fs(struct proc_dir_entry **dir,
3f86b832
RT		 518 struct proc_dir_entry *parent_dir)
519{
3f86b832
RT		 520 if (*dir) {
521 remove_proc_entry(ACPI_SBS_FILE_INFO, *dir);
522 remove_proc_entry(ACPI_SBS_FILE_STATE, *dir);
523 remove_proc_entry(ACPI_SBS_FILE_ALARM, *dir);
524 remove_proc_entry((*dir)->name, parent_dir);
525 *dir = NULL;
526 }
3f86b832
RT		 527}
528
529/* Smart Battery Interface */
3f86b832
RT		 530static struct proc_dir_entry *acpi_battery_dir = NULL;
531
db1c291a
AS		 532static inline char *acpi_battery_units(struct acpi_battery *battery)
533{
5a21e4fe 534 return acpi_battery_mode(battery) ? " mW" : " mA";
db1c291a
AS		 535}
536
537
3f86b832
RT		 538static int acpi_battery_read_info(struct seq_file *seq, void *offset)
539{
50dd0969 540 struct acpi_battery *battery = seq->private;
72206233 541 struct acpi_sbs *sbs = battery->sbs;
3f86b832
RT		 542 int result = 0;
543
db1c291a 544 mutex_lock(&sbs->lock);
3f86b832 545
db1c291a
AS		 546 seq_printf(seq, "present: %s\n",
547 (battery->present) ? "yes" : "no");
548 if (!battery->present)
72206233 549 goto end;
3f86b832 550
5a21e4fe 551 seq_printf(seq, "design capacity: %i%sh\n",
db1c291a
AS		 552 battery->design_capacity * acpi_battery_scale(battery),
553 acpi_battery_units(battery));
5a21e4fe 554 seq_printf(seq, "last full capacity: %i%sh\n",
db1c291a
AS		 555 battery->full_charge_capacity * acpi_battery_scale(battery),
556 acpi_battery_units(battery));
3f86b832 557 seq_printf(seq, "battery technology: rechargeable\n");
3f86b832 558 seq_printf(seq, "design voltage: %i mV\n",
db1c291a 559 battery->design_voltage * acpi_battery_vscale(battery));
3f86b832
RT		 560 seq_printf(seq, "design capacity warning: unknown\n");
561 seq_printf(seq, "design capacity low: unknown\n");
562 seq_printf(seq, "capacity granularity 1: unknown\n");
563 seq_printf(seq, "capacity granularity 2: unknown\n");
db1c291a 564 seq_printf(seq, "model number: %s\n", battery->device_name);
3f86b832 565 seq_printf(seq, "serial number: %i\n",
89862e3b 566 battery->serial_number);
3f86b832 567 seq_printf(seq, "battery type: %s\n",
89862e3b 568 battery->device_chemistry);
3f86b832 569 seq_printf(seq, "OEM info: %s\n",
89862e3b 570 battery->manufacturer_name);
3f86b832 571 end:
db1c291a 572 mutex_unlock(&sbs->lock);
635227ee 573 return result;
3f86b832
RT		 574}
575
576static int acpi_battery_info_open_fs(struct inode *inode, struct file *file)
577{
578 return single_open(file, acpi_battery_read_info, PDE(inode)->data);
579}
580
581static int acpi_battery_read_state(struct seq_file *seq, void *offset)
582{
72206233
VL		 583 struct acpi_battery *battery = seq->private;
584 struct acpi_sbs *sbs = battery->sbs;
5a21e4fe 585 int rate;
3f86b832 586
db1c291a
AS		 587 mutex_lock(&sbs->lock);
588 seq_printf(seq, "present: %s\n",
589 (battery->present) ? "yes" : "no");
590 if (!battery->present)
3f86b832 591 goto end;
3f86b832 592
db1c291a
AS		 593 acpi_battery_get_state(battery);
594 seq_printf(seq, "capacity state: %s\n",
595 (battery->state & 0x0010) ? "critical" : "ok");
596 seq_printf(seq, "charging state: %s\n",
7faa144a
AS		 597 (battery->rate_now < 0) ? "discharging" :
598 ((battery->rate_now > 0) ? "charging" : "charged"));
599 rate = abs(battery->rate_now) * acpi_battery_ipscale(battery);
5a21e4fe
AS		 600 rate *= (acpi_battery_mode(battery))?(battery->voltage_now *
601 acpi_battery_vscale(battery)/1000):1;
602 seq_printf(seq, "present rate: %d%s\n", rate,
603 acpi_battery_units(battery));
604 seq_printf(seq, "remaining capacity: %i%sh\n",
db1c291a
AS		 605 battery->capacity_now * acpi_battery_scale(battery),
606 acpi_battery_units(battery));
3f86b832 607 seq_printf(seq, "present voltage: %i mV\n",
db1c291a 608 battery->voltage_now * acpi_battery_vscale(battery));
3f86b832
RT		 609
610 end:
db1c291a 611 mutex_unlock(&sbs->lock);
5a21e4fe 612 return 0;
3f86b832
RT		 613}
614
615static int acpi_battery_state_open_fs(struct inode *inode, struct file *file)
616{
617 return single_open(file, acpi_battery_read_state, PDE(inode)->data);
618}
619
620static int acpi_battery_read_alarm(struct seq_file *seq, void *offset)
621{
50dd0969 622 struct acpi_battery *battery = seq->private;
72206233 623 struct acpi_sbs *sbs = battery->sbs;
3f86b832 624 int result = 0;
3f86b832 625
db1c291a 626 mutex_lock(&sbs->lock);
3f86b832 627
89862e3b 628 if (!battery->present) {
3f86b832
RT		 629 seq_printf(seq, "present: no\n");
630 goto end;
631 }
632
db1c291a 633 acpi_battery_get_alarm(battery);
3f86b832 634 seq_printf(seq, "alarm: ");
db1c291a 635 if (battery->alarm_capacity)
5a21e4fe 636 seq_printf(seq, "%i%sh\n",
db1c291a
AS		 637 battery->alarm_capacity *
638 acpi_battery_scale(battery),
639 acpi_battery_units(battery));
640 else
3f86b832 641 seq_printf(seq, "disabled\n");
3f86b832 642 end:
db1c291a 643 mutex_unlock(&sbs->lock);
635227ee 644 return result;
3f86b832
RT		 645}
646
647static ssize_t
648acpi_battery_write_alarm(struct file *file, const char __user * buffer,
649 size_t count, loff_t * ppos)
650{
50dd0969
JE		 651 struct seq_file *seq = file->private_data;
652 struct acpi_battery *battery = seq->private;
72206233 653 struct acpi_sbs *sbs = battery->sbs;
3f86b832 654 char alarm_string[12] = { '\0' };
db1c291a
AS		 655 int result = 0;
656 mutex_lock(&sbs->lock);
89862e3b 657 if (!battery->present) {
3f86b832
RT		 658 result = -ENODEV;
659 goto end;
660 }
3f86b832
RT		 661 if (count > sizeof(alarm_string) - 1) {
662 result = -EINVAL;
663 goto end;
664 }
3f86b832
RT		 665 if (copy_from_user(alarm_string, buffer, count)) {
666 result = -EFAULT;
667 goto end;
668 }
3f86b832 669 alarm_string[count] = 0;
94f6c086
AS		 670 battery->alarm_capacity = simple_strtoul(alarm_string, NULL, 0) /
671 acpi_battery_scale(battery);
db1c291a 672 acpi_battery_set_alarm(battery);
3f86b832 673 end:
db1c291a
AS		 674 mutex_unlock(&sbs->lock);
675 if (result)
635227ee 676 return result;
db1c291a 677 return count;
3f86b832
RT		 678}
679
680static int acpi_battery_alarm_open_fs(struct inode *inode, struct file *file)
681{
682 return single_open(file, acpi_battery_read_alarm, PDE(inode)->data);
683}
684
685static struct file_operations acpi_battery_info_fops = {
686 .open = acpi_battery_info_open_fs,
687 .read = seq_read,
688 .llseek = seq_lseek,
689 .release = single_release,
690 .owner = THIS_MODULE,
691};
692
693static struct file_operations acpi_battery_state_fops = {
694 .open = acpi_battery_state_open_fs,
695 .read = seq_read,
696 .llseek = seq_lseek,
697 .release = single_release,
698 .owner = THIS_MODULE,
699};
700
701static struct file_operations acpi_battery_alarm_fops = {
702 .open = acpi_battery_alarm_open_fs,
703 .read = seq_read,
704 .write = acpi_battery_write_alarm,
705 .llseek = seq_lseek,
706 .release = single_release,
707 .owner = THIS_MODULE,
708};
709
710/* Legacy AC Adapter Interface */
711
712static struct proc_dir_entry *acpi_ac_dir = NULL;
713
714static int acpi_ac_read_state(struct seq_file *seq, void *offset)
715{
3f86b832 716
db1c291a 717 struct acpi_sbs *sbs = seq->private;
3f86b832 718
db1c291a 719 mutex_lock(&sbs->lock);
3f86b832
RT		 720
721 seq_printf(seq, "state: %s\n",
89862e3b 722 sbs->charger_present ? "on-line" : "off-line");
3f86b832 723
db1c291a 724 mutex_unlock(&sbs->lock);
635227ee 725 return 0;
3f86b832
RT		 726}
727
728static int acpi_ac_state_open_fs(struct inode *inode, struct file *file)
729{
730 return single_open(file, acpi_ac_read_state, PDE(inode)->data);
731}
732
733static struct file_operations acpi_ac_state_fops = {
734 .open = acpi_ac_state_open_fs,
735 .read = seq_read,
736 .llseek = seq_lseek,
737 .release = single_release,
738 .owner = THIS_MODULE,
739};
740
66e4b72b
AS		 741#endif
742
3f86b832
RT		 743/* --------------------------------------------------------------------------
744 Driver Interface
745 -------------------------------------------------------------------------- */
db1c291a 746static int acpi_battery_read(struct acpi_battery *battery)
3f86b832 747{
db1c291a
AS		 748 int result = 0, saved_present = battery->present;
749 u16 state;
3f86b832 750
db1c291a
AS		 751 if (battery->sbs->manager_present) {
752 result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD,
753 ACPI_SBS_MANAGER, 0x01, (u8 *)&state);
754 if (!result)
755 battery->present = state & (1 << battery->id);
756 state &= 0x0fff;
757 state |= 1 << (battery->id + 12);
758 acpi_smbus_write(battery->sbs->hc, SMBUS_WRITE_WORD,
759 ACPI_SBS_MANAGER, 0x01, (u8 *)&state, 2);
760 } else if (battery->id == 0)
761 battery->present = 1;
762 if (result || !battery->present)
763 return result;
3f86b832 764
db1c291a
AS		 765 if (saved_present != battery->present) {
766 battery->update_time = 0;
767 result = acpi_battery_get_info(battery);
768 if (result)
769 return result;
770 }
771 result = acpi_battery_get_state(battery);
772 return result;
773}
3f86b832 774
94f6c086 775/* Smart Battery */
db1c291a
AS		 776static int acpi_battery_add(struct acpi_sbs *sbs, int id)
777{
db1c291a 778 struct acpi_battery *battery = &sbs->battery[id];
94f6c086
AS		 779 int result;
780
3f86b832
RT		 781 battery->id = id;
782 battery->sbs = sbs;
db1c291a
AS		 783 result = acpi_battery_read(battery);
784 if (result)
785 return result;
3f86b832 786
db1c291a 787 sprintf(battery->name, ACPI_BATTERY_DIR_NAME, id);
fdcedbba 788#ifdef CONFIG_ACPI_PROCFS_POWER
db1c291a
AS		 789 acpi_sbs_add_fs(&battery->proc_entry, acpi_battery_dir,
790 battery->name, &acpi_battery_info_fops,
791 &acpi_battery_state_fops, &acpi_battery_alarm_fops,
792 battery);
66e4b72b 793#endif
97749cd9 794#ifdef CONFIG_ACPI_SYSFS_POWER
94f6c086
AS		 795 battery->bat.name = battery->name;
796 battery->bat.type = POWER_SUPPLY_TYPE_BATTERY;
797 if (!acpi_battery_mode(battery)) {
798 battery->bat.properties = sbs_charge_battery_props;
799 battery->bat.num_properties =
800 ARRAY_SIZE(sbs_charge_battery_props);
801 } else {
802 battery->bat.properties = sbs_energy_battery_props;
803 battery->bat.num_properties =
804 ARRAY_SIZE(sbs_energy_battery_props);
805 }
806 battery->bat.get_property = acpi_sbs_battery_get_property;
807 result = power_supply_register(&sbs->device->dev, &battery->bat);
037cbc63
JG		 808 if (result)
809 goto end;
810 result = device_create_file(battery->bat.dev, &alarm_attr);
811 if (result)
812 goto end;
813 battery->have_sysfs_alarm = 1;
814 end:
97749cd9 815#endif
72206233 816 printk(KERN_INFO PREFIX "%s [%s]: Battery Slot [%s] (battery %s)\n",
db1c291a 817 ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device),
bbafbecb 818 battery->name, battery->present ? "present" : "absent");
635227ee 819 return result;
3f86b832
RT		 820}
821
822static void acpi_battery_remove(struct acpi_sbs *sbs, int id)
823{
037cbc63 824 struct acpi_battery *battery = &sbs->battery[id];
97749cd9 825#ifdef CONFIG_ACPI_SYSFS_POWER
037cbc63
JG		 826 if (battery->bat.dev) {
827 if (battery->have_sysfs_alarm)
828 device_remove_file(battery->bat.dev, &alarm_attr);
829 power_supply_unregister(&battery->bat);
3f86b832 830 }
97749cd9 831#endif
c2e46d2e 832#ifdef CONFIG_ACPI_PROCFS_POWER
037cbc63
JG		 833 if (battery->proc_entry)
834 acpi_sbs_remove_fs(&battery->proc_entry, acpi_battery_dir);
66e4b72b 835#endif
3f86b832
RT		 836}
837
db1c291a 838static int acpi_charger_add(struct acpi_sbs *sbs)
3f86b832
RT		 839{
840 int result;
841
3f86b832 842 result = acpi_ac_get_present(sbs);
db1c291a 843 if (result)
3f86b832 844 goto end;
fdcedbba 845#ifdef CONFIG_ACPI_PROCFS_POWER
db1c291a
AS		 846 result = acpi_sbs_add_fs(&sbs->charger_entry, acpi_ac_dir,
847 ACPI_AC_DIR_NAME, NULL,
848 &acpi_ac_state_fops, NULL, sbs);
849 if (result)
3f86b832 850 goto end;
66e4b72b 851#endif
97749cd9 852#ifdef CONFIG_ACPI_SYSFS_POWER
94f6c086
AS		 853 sbs->charger.name = "sbs-charger";
854 sbs->charger.type = POWER_SUPPLY_TYPE_MAINS;
855 sbs->charger.properties = sbs_ac_props;
856 sbs->charger.num_properties = ARRAY_SIZE(sbs_ac_props);
857 sbs->charger.get_property = sbs_get_ac_property;
858 power_supply_register(&sbs->device->dev, &sbs->charger);
97749cd9 859#endif
72206233
VL		 860 printk(KERN_INFO PREFIX "%s [%s]: AC Adapter [%s] (%s)\n",
861 ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device),
89862e3b 862 ACPI_AC_DIR_NAME, sbs->charger_present ? "on-line" : "off-line");
3f86b832 863 end:
635227ee 864 return result;
3f86b832
RT		 865}
866
db1c291a 867static void acpi_charger_remove(struct acpi_sbs *sbs)
3f86b832 868{
97749cd9 869#ifdef CONFIG_ACPI_SYSFS_POWER
94f6c086
AS		 870 if (sbs->charger.dev)
871 power_supply_unregister(&sbs->charger);
97749cd9 872#endif
fdcedbba 873#ifdef CONFIG_ACPI_PROCFS_POWER
db1c291a
AS		 874 if (sbs->charger_entry)
875 acpi_sbs_remove_fs(&sbs->charger_entry, acpi_ac_dir);
66e4b72b 876#endif
3f86b832
RT		 877}
878
e5685b9d 879static void acpi_sbs_callback(void *context)
3f86b832 880{
db1c291a
AS		 881 int id;
882 struct acpi_sbs *sbs = context;
883 struct acpi_battery *bat;
884 u8 saved_charger_state = sbs->charger_present;
885 u8 saved_battery_state;
886 acpi_ac_get_present(sbs);
887 if (sbs->charger_present != saved_charger_state) {
94f6c086 888#ifdef CONFIG_ACPI_PROC_EVENT
db1c291a
AS		 889 acpi_bus_generate_proc_event4(ACPI_AC_CLASS, ACPI_AC_DIR_NAME,
890 ACPI_SBS_NOTIFY_STATUS,
891 sbs->charger_present);
94f6c086 892#endif
97749cd9 893#ifdef CONFIG_ACPI_SYSFS_POWER
94f6c086 894 kobject_uevent(&sbs->charger.dev->kobj, KOBJ_CHANGE);
97749cd9 895#endif
3f86b832 896 }
db1c291a
AS		 897 if (sbs->manager_present) {
898 for (id = 0; id < MAX_SBS_BAT; ++id) {
899 if (!(sbs->batteries_supported & (1 << id)))
900 continue;
901 bat = &sbs->battery[id];
902 saved_battery_state = bat->present;
903 acpi_battery_read(bat);
904 if (saved_battery_state == bat->present)
905 continue;
94f6c086 906#ifdef CONFIG_ACPI_PROC_EVENT
db1c291a
AS		 907 acpi_bus_generate_proc_event4(ACPI_BATTERY_CLASS,
908 bat->name,
909 ACPI_SBS_NOTIFY_STATUS,
910 bat->present);
94f6c086 911#endif
97749cd9 912#ifdef CONFIG_ACPI_SYSFS_POWER
94f6c086 913 kobject_uevent(&bat->bat.dev->kobj, KOBJ_CHANGE);
97749cd9 914#endif
3f86b832 915 }
3f86b832 916 }
3f86b832
RT		 917}
918
db1c291a 919static int acpi_sbs_remove(struct acpi_device *device, int type);
3f86b832
RT		 920
921static int acpi_sbs_add(struct acpi_device *device)
922{
db1c291a
AS		 923 struct acpi_sbs *sbs;
924 int result = 0;
6d15702c 925 int id;
3f86b832 926
36bcbec7 927 sbs = kzalloc(sizeof(struct acpi_sbs), GFP_KERNEL);
3f86b832 928 if (!sbs) {
72206233
VL		 929 result = -ENOMEM;
930 goto end;
3f86b832 931 }
3f86b832 932
db1c291a 933 mutex_init(&sbs->lock);
72206233 934
91087dfa 935 sbs->hc = acpi_driver_data(device->parent);
db1c291a 936 sbs->device = device;
3f86b832
RT		 937 strcpy(acpi_device_name(device), ACPI_SBS_DEVICE_NAME);
938 strcpy(acpi_device_class(device), ACPI_SBS_CLASS);
db89b4f0 939 device->driver_data = sbs;
3f86b832 940
db1c291a 941 result = acpi_charger_add(sbs);
72206233
VL		 942 if (result)
943 goto end;
3f86b832 944
db1c291a
AS		 945 result = acpi_manager_get_info(sbs);
946 if (!result) {
947 sbs->manager_present = 1;
948 for (id = 0; id < MAX_SBS_BAT; ++id)
949 if ((sbs->batteries_supported & (1 << id)))
950 acpi_battery_add(sbs, id);
951 } else
952 acpi_battery_add(sbs, 0);
953 acpi_smbus_register_callback(sbs->hc, acpi_sbs_callback, sbs);
3f86b832 954 end:
db1c291a
AS		 955 if (result)
956 acpi_sbs_remove(device, 0);
635227ee 957 return result;
3f86b832
RT		 958}
959
72206233 960static int acpi_sbs_remove(struct acpi_device *device, int type)
3f86b832 961{
cece9014 962 struct acpi_sbs *sbs;
3f86b832
RT		 963 int id;
964
db1c291a 965 if (!device)
963497c1 966 return -EINVAL;
72206233 967 sbs = acpi_driver_data(device);
db1c291a 968 if (!sbs)
635227ee 969 return -EINVAL;
db1c291a
AS		 970 mutex_lock(&sbs->lock);
971 acpi_smbus_unregister_callback(sbs->hc);
972 for (id = 0; id < MAX_SBS_BAT; ++id)
3f86b832 973 acpi_battery_remove(sbs, id);
db1c291a
AS		 974 acpi_charger_remove(sbs);
975 mutex_unlock(&sbs->lock);
976 mutex_destroy(&sbs->lock);
3f86b832 977 kfree(sbs);
635227ee 978 return 0;
3f86b832
RT		 979}
980
72206233
VL		 981static void acpi_sbs_rmdirs(void)
982{
fdcedbba 983#ifdef CONFIG_ACPI_PROCFS_POWER
72206233
VL		 984 if (acpi_ac_dir) {
985 acpi_unlock_ac_dir(acpi_ac_dir);
986 acpi_ac_dir = NULL;
987 }
988 if (acpi_battery_dir) {
989 acpi_unlock_battery_dir(acpi_battery_dir);
990 acpi_battery_dir = NULL;
991 }
66e4b72b 992#endif
72206233
VL		 993}
994
995static int acpi_sbs_resume(struct acpi_device *device)
996{
997 struct acpi_sbs *sbs;
72206233
VL		 998 if (!device)
999 return -EINVAL;
72206233 1000 sbs = device->driver_data;
db1c291a 1001 acpi_sbs_callback(sbs);
72206233
VL		 1002 return 0;
1003}
1004
94f6c086
AS		 1005static struct acpi_driver acpi_sbs_driver = {
1006 .name = "sbs",
1007 .class = ACPI_SBS_CLASS,
1008 .ids = sbs_device_ids,
1009 .ops = {
1010 .add = acpi_sbs_add,
1011 .remove = acpi_sbs_remove,
1012 .resume = acpi_sbs_resume,
1013 },
1014};
1015
3f86b832
RT		 1016static int __init acpi_sbs_init(void)
1017{
1018 int result = 0;
1019
b20d2aeb
LB		 1020 if (acpi_disabled)
1021 return -ENODEV;
fdcedbba 1022#ifdef CONFIG_ACPI_PROCFS_POWER
3f86b832 1023 acpi_ac_dir = acpi_lock_ac_dir();
94f6c086 1024 if (!acpi_ac_dir)
635227ee 1025 return -ENODEV;
3f86b832
RT		 1026 acpi_battery_dir = acpi_lock_battery_dir();
1027 if (!acpi_battery_dir) {
72206233 1028 acpi_sbs_rmdirs();
635227ee 1029 return -ENODEV;
3f86b832 1030 }
66e4b72b 1031#endif
3f86b832
RT		 1032 result = acpi_bus_register_driver(&acpi_sbs_driver);
1033 if (result < 0) {
72206233 1034 acpi_sbs_rmdirs();
635227ee 1035 return -ENODEV;
3f86b832 1036 }
635227ee 1037 return 0;
3f86b832
RT		 1038}
1039
1040static void __exit acpi_sbs_exit(void)
1041{
3f86b832 1042 acpi_bus_unregister_driver(&acpi_sbs_driver);
72206233 1043 acpi_sbs_rmdirs();
635227ee 1044 return;
3f86b832
RT		 1045}
1046
1047module_init(acpi_sbs_init);
1048module_exit(acpi_sbs_exit);
kernel source for telekom puls (alcatel/mediatek)