blob: 3963cb6e0f19c75db53572c18081af2846bbc976 [file] [log] [blame]
Rich Townsend3f86b832006-07-01 11:36:54 -04001/*
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +04002 * sbs.c - ACPI Smart Battery System Driver ($Revision: 2.0 $)
Rich Townsend3f86b832006-07-01 11:36:54 -04003 *
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +04004 * Copyright (c) 2007 Alexey Starikovskiy <astarikovskiy@suse.de>
5 * Copyright (c) 2005-2007 Vladimir Lebedev <vladimir.p.lebedev@intel.com>
Rich Townsend3f86b832006-07-01 11:36:54 -04006 * 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>
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +040031
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +030032#ifdef CONFIG_ACPI_PROCFS_POWER
Rich Townsend3f86b832006-07-01 11:36:54 -040033#include <linux/proc_fs.h>
34#include <linux/seq_file.h>
35#include <asm/uaccess.h>
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +040036#endif
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +040037
Rich Townsend3f86b832006-07-01 11:36:54 -040038#include <linux/acpi.h>
Vladimir Lebedev6d157022007-03-19 17:45:50 +030039#include <linux/timer.h>
Vladimir Lebedev72206232007-03-19 17:45:50 +030040#include <linux/jiffies.h>
Rich Townsend3f86b832006-07-01 11:36:54 -040041#include <linux/delay.h>
42
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -050043#ifdef CONFIG_ACPI_SYSFS_POWER
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +040044#include <linux/power_supply.h>
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -050045#endif
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +040046
Alexey Starikovskiy91087df2007-09-26 19:43:28 +040047#include "sbshc.h"
48
Rich Townsend3f86b832006-07-01 11:36:54 -040049#define ACPI_SBS_CLASS "sbs"
50#define ACPI_AC_CLASS "ac_adapter"
51#define ACPI_BATTERY_CLASS "battery"
Rich Townsend3f86b832006-07-01 11:36:54 -040052#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"
Rich Townsend3f86b832006-07-01 11:36:54 -040058
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +040059#define ACPI_SBS_NOTIFY_STATUS 0x80
60#define ACPI_SBS_NOTIFY_INFO 0x81
Rich Townsend3f86b832006-07-01 11:36:54 -040061
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +040062MODULE_AUTHOR("Alexey Starikovskiy <astarikovskiy@suse.de>");
Rich Townsend3f86b832006-07-01 11:36:54 -040063MODULE_DESCRIPTION("Smart Battery System ACPI interface driver");
64MODULE_LICENSE("GPL");
65
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +040066static unsigned int cache_time = 1000;
67module_param(cache_time, uint, 0644);
68MODULE_PARM_DESC(cache_time, "cache time in milliseconds");
Vladimir Lebedev6d157022007-03-19 17:45:50 +030069
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
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +040075#define MAX_SBS_BAT 4
Vladimir Lebedev6d157022007-03-19 17:45:50 +030076#define ACPI_SBS_BLOCK_MAX 32
77
Thomas Renninger1ba90e32007-07-23 14:44:41 +020078static const struct acpi_device_id sbs_device_ids[] = {
Alexey Starikovskiy91087df2007-09-26 19:43:28 +040079 {"ACPI0002", 0},
Thomas Renninger1ba90e32007-07-23 14:44:41 +020080 {"", 0},
81};
82MODULE_DEVICE_TABLE(acpi, sbs_device_ids);
83
Alexey Starikovskiy89862e32007-09-26 19:43:35 +040084struct acpi_battery {
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -050085#ifdef CONFIG_ACPI_SYSFS_POWER
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +040086 struct power_supply bat;
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -050087#endif
Alexey Starikovskiy89862e32007-09-26 19:43:35 +040088 struct acpi_sbs *sbs;
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +030089#ifdef CONFIG_ACPI_PROCFS_POWER
Alexey Starikovskiy89862e32007-09-26 19:43:35 +040090 struct proc_dir_entry *proc_entry;
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +040091#endif
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +040092 unsigned long update_time;
93 char name[8];
Alexey Starikovskiy89862e32007-09-26 19:43:35 +040094 char manufacturer_name[ACPI_SBS_BLOCK_MAX];
95 char device_name[ACPI_SBS_BLOCK_MAX];
96 char device_chemistry[ACPI_SBS_BLOCK_MAX];
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +040097 u16 alarm_capacity;
Alexey Starikovskiy89862e32007-09-26 19:43:35 +040098 u16 full_charge_capacity;
99 u16 design_capacity;
100 u16 design_voltage;
101 u16 serial_number;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400102 u16 cycle_count;
103 u16 temp_now;
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400104 u16 voltage_now;
Alexey Starikovskiy7faa1442009-03-27 22:23:52 -0400105 s16 rate_now;
106 s16 rate_avg;
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400107 u16 capacity_now;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400108 u16 state_of_charge;
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400109 u16 state;
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400110 u16 mode;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400111 u16 spec;
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400112 u8 id;
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400113 u8 present:1;
Jeff Garzik037cbc62007-11-18 00:32:31 +0300114 u8 have_sysfs_alarm:1;
Rich Townsend3f86b832006-07-01 11:36:54 -0400115};
116
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400117#define to_acpi_battery(x) container_of(x, struct acpi_battery, bat);
118
Rich Townsend3f86b832006-07-01 11:36:54 -0400119struct acpi_sbs {
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500120#ifdef CONFIG_ACPI_SYSFS_POWER
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400121 struct power_supply charger;
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500122#endif
Rich Townsend3f86b832006-07-01 11:36:54 -0400123 struct acpi_device *device;
Alexey Starikovskiy91087df2007-09-26 19:43:28 +0400124 struct acpi_smb_hc *hc;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400125 struct mutex lock;
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +0300126#ifdef CONFIG_ACPI_PROCFS_POWER
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400127 struct proc_dir_entry *charger_entry;
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400128#endif
Rich Townsend3f86b832006-07-01 11:36:54 -0400129 struct acpi_battery battery[MAX_SBS_BAT];
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400130 u8 batteries_supported:4;
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400131 u8 manager_present:1;
132 u8 charger_present:1;
Rich Townsend3f86b832006-07-01 11:36:54 -0400133};
134
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400135#define to_acpi_sbs(x) container_of(x, struct acpi_sbs, charger)
136
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400137static inline int battery_scale(int log)
Vladimir Lebedev72206232007-03-19 17:45:50 +0300138{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400139 int scale = 1;
140 while (log--)
141 scale *= 10;
142 return scale;
Vladimir Lebedev72206232007-03-19 17:45:50 +0300143}
144
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400145static inline int acpi_battery_vscale(struct acpi_battery *battery)
Vladimir Lebedev72206232007-03-19 17:45:50 +0300146{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400147 return battery_scale((battery->spec & 0x0f00) >> 8);
Vladimir Lebedev72206232007-03-19 17:45:50 +0300148}
149
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400150static inline int acpi_battery_ipscale(struct acpi_battery *battery)
Vladimir Lebedev72206232007-03-19 17:45:50 +0300151{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400152 return battery_scale((battery->spec & 0xf000) >> 12);
153}
154
155static inline int acpi_battery_mode(struct acpi_battery *battery)
156{
157 return (battery->mode & 0x8000);
158}
159
160static inline int acpi_battery_scale(struct acpi_battery *battery)
161{
162 return (acpi_battery_mode(battery) ? 10 : 1) *
163 acpi_battery_ipscale(battery);
Vladimir Lebedev72206232007-03-19 17:45:50 +0300164}
165
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500166#ifdef CONFIG_ACPI_SYSFS_POWER
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400167static 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:
Alexey Starikovskiy7faa1442009-03-27 22:23:52 -0400205 if (battery->rate_now < 0)
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400206 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
Alexey Starikovskiy7faa1442009-03-27 22:23:52 -0400207 else if (battery->rate_now > 0)
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400208 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:
Alexey Starikovskiy7faa1442009-03-27 22:23:52 -0400227 case POWER_SUPPLY_PROP_POWER_NOW:
228 val->intval = abs(battery->rate_now) *
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400229 acpi_battery_ipscale(battery) * 1000;
230 break;
231 case POWER_SUPPLY_PROP_CURRENT_AVG:
Alexey Starikovskiy7faa1442009-03-27 22:23:52 -0400232 case POWER_SUPPLY_PROP_POWER_AVG:
233 val->intval = abs(battery->rate_avg) *
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400234 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,
Alexey Starikovskiy7faa1442009-03-27 22:23:52 -0400298 POWER_SUPPLY_PROP_POWER_NOW,
299 POWER_SUPPLY_PROP_POWER_AVG,
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400300 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};
Alexey Starikovskiy7faa1442009-03-27 22:23:52 -0400308
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500309#endif
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400310
Rich Townsend3f86b832006-07-01 11:36:54 -0400311/* --------------------------------------------------------------------------
312 Smart Battery System Management
313 -------------------------------------------------------------------------- */
314
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400315struct 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};
Vladimir Lebedev72206232007-03-19 17:45:50 +0300320
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400321static 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};
Rich Townsend3f86b832006-07-01 11:36:54 -0400334
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400335static 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)},
Alexey Starikovskiy7faa1442009-03-27 22:23:52 -0400338 {0x0a, SMBUS_READ_WORD, offsetof(struct acpi_battery, rate_now)},
339 {0x0b, SMBUS_READ_WORD, offsetof(struct acpi_battery, rate_avg)},
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400340 {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};
Rich Townsend3f86b832006-07-01 11:36:54 -0400344
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400345static int acpi_manager_get_info(struct acpi_sbs *sbs)
Rich Townsend3f86b832006-07-01 11:36:54 -0400346{
Rich Townsend3f86b832006-07-01 11:36:54 -0400347 int result = 0;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400348 u16 battery_system_info;
Rich Townsend3f86b832006-07-01 11:36:54 -0400349
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400350 result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER,
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400351 0x04, (u8 *)&battery_system_info);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400352 if (!result)
353 sbs->batteries_supported = battery_system_info & 0x000f;
Len Brown635227e2006-07-01 16:48:23 -0400354 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400355}
356
357static int acpi_battery_get_info(struct acpi_battery *battery)
358{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400359 int i, result = 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400360
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400361 for (i = 0; i < ARRAY_SIZE(info_readers); ++i) {
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400362 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);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400368 if (result)
369 break;
Rich Townsend3f86b832006-07-01 11:36:54 -0400370 }
Len Brown635227e2006-07-01 16:48:23 -0400371 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400372}
373
Rich Townsend3f86b832006-07-01 11:36:54 -0400374static int acpi_battery_get_state(struct acpi_battery *battery)
375{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400376 int i, result = 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400377
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400378 if (battery->update_time &&
379 time_before(jiffies, battery->update_time +
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400380 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)
390 goto end;
Rich Townsend3f86b832006-07-01 11:36:54 -0400391 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400392 end:
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400393 battery->update_time = jiffies;
Len Brown635227e2006-07-01 16:48:23 -0400394 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400395}
396
397static int acpi_battery_get_alarm(struct acpi_battery *battery)
398{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400399 return acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD,
400 ACPI_SBS_BATTERY, 0x01,
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400401 (u8 *)&battery->alarm_capacity);
Rich Townsend3f86b832006-07-01 11:36:54 -0400402}
403
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400404static int acpi_battery_set_alarm(struct acpi_battery *battery)
Rich Townsend3f86b832006-07-01 11:36:54 -0400405{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400406 struct acpi_sbs *sbs = battery->sbs;
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400407 u16 value, sel = 1 << (battery->id + 12);
408
409 int ret;
410
Rich Townsend3f86b832006-07-01 11:36:54 -0400411
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400412 if (sbs->manager_present) {
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400413 ret = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER,
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400414 0x01, (u8 *)&value);
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400415 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 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400426 }
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400427 ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, ACPI_SBS_BATTERY,
428 0x01, (u8 *)&battery->alarm_capacity, 2);
429 end:
430 return ret;
Rich Townsend3f86b832006-07-01 11:36:54 -0400431}
432
433static int acpi_ac_get_present(struct acpi_sbs *sbs)
434{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400435 int result;
436 u16 status;
Rich Townsend3f86b832006-07-01 11:36:54 -0400437
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400438 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;
Len Brown635227e2006-07-01 16:48:23 -0400442 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400443}
444
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500445#ifdef CONFIG_ACPI_SYSFS_POWER
Alexey Starikovskiy8bd95532007-09-26 19:44:00 +0400446static 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 = {
Parag Warudkar01e8ef12008-10-18 20:28:50 -0700471 .attr = {.name = "alarm", .mode = 0644},
Alexey Starikovskiy8bd95532007-09-26 19:44:00 +0400472 .show = acpi_battery_alarm_show,
473 .store = acpi_battery_alarm_store,
474};
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500475#endif
Alexey Starikovskiy8bd95532007-09-26 19:44:00 +0400476
Rich Townsend3f86b832006-07-01 11:36:54 -0400477/* --------------------------------------------------------------------------
478 FS Interface (/proc/acpi)
479 -------------------------------------------------------------------------- */
480
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +0300481#ifdef CONFIG_ACPI_PROCFS_POWER
Rich Townsend3f86b832006-07-01 11:36:54 -0400482/* Generic Routines */
Rich Townsend3f86b832006-07-01 11:36:54 -0400483static int
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400484acpi_sbs_add_fs(struct proc_dir_entry **dir,
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400485 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)
Rich Townsend3f86b832006-07-01 11:36:54 -0400490{
Rich Townsend3f86b832006-07-01 11:36:54 -0400491 if (!*dir) {
492 *dir = proc_mkdir(dir_name, parent_dir);
493 if (!*dir) {
Len Brown635227e2006-07-01 16:48:23 -0400494 return -ENODEV;
Rich Townsend3f86b832006-07-01 11:36:54 -0400495 }
496 (*dir)->owner = THIS_MODULE;
497 }
498
499 /* 'info' [R] */
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -0700500 if (info_fops)
501 proc_create_data(ACPI_SBS_FILE_INFO, S_IRUGO, *dir,
502 info_fops, data);
Rich Townsend3f86b832006-07-01 11:36:54 -0400503
504 /* 'state' [R] */
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -0700505 if (state_fops)
506 proc_create_data(ACPI_SBS_FILE_STATE, S_IRUGO, *dir,
507 state_fops, data);
Rich Townsend3f86b832006-07-01 11:36:54 -0400508
509 /* 'alarm' [R/W] */
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -0700510 if (alarm_fops)
511 proc_create_data(ACPI_SBS_FILE_ALARM, S_IRUGO, *dir,
512 alarm_fops, data);
Len Brown635227e2006-07-01 16:48:23 -0400513 return 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400514}
515
516static void
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400517acpi_sbs_remove_fs(struct proc_dir_entry **dir,
Rich Townsend3f86b832006-07-01 11:36:54 -0400518 struct proc_dir_entry *parent_dir)
519{
Rich Townsend3f86b832006-07-01 11:36:54 -0400520 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 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400527}
528
529/* Smart Battery Interface */
Rich Townsend3f86b832006-07-01 11:36:54 -0400530static struct proc_dir_entry *acpi_battery_dir = NULL;
531
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400532static inline char *acpi_battery_units(struct acpi_battery *battery)
533{
Alexey Starikovskiy5a21e4f2007-12-08 13:02:46 +0300534 return acpi_battery_mode(battery) ? " mW" : " mA";
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400535}
536
537
Rich Townsend3f86b832006-07-01 11:36:54 -0400538static int acpi_battery_read_info(struct seq_file *seq, void *offset)
539{
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200540 struct acpi_battery *battery = seq->private;
Vladimir Lebedev72206232007-03-19 17:45:50 +0300541 struct acpi_sbs *sbs = battery->sbs;
Rich Townsend3f86b832006-07-01 11:36:54 -0400542 int result = 0;
543
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400544 mutex_lock(&sbs->lock);
Rich Townsend3f86b832006-07-01 11:36:54 -0400545
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400546 seq_printf(seq, "present: %s\n",
547 (battery->present) ? "yes" : "no");
548 if (!battery->present)
Vladimir Lebedev72206232007-03-19 17:45:50 +0300549 goto end;
Rich Townsend3f86b832006-07-01 11:36:54 -0400550
Alexey Starikovskiy5a21e4f2007-12-08 13:02:46 +0300551 seq_printf(seq, "design capacity: %i%sh\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400552 battery->design_capacity * acpi_battery_scale(battery),
553 acpi_battery_units(battery));
Alexey Starikovskiy5a21e4f2007-12-08 13:02:46 +0300554 seq_printf(seq, "last full capacity: %i%sh\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400555 battery->full_charge_capacity * acpi_battery_scale(battery),
556 acpi_battery_units(battery));
Rich Townsend3f86b832006-07-01 11:36:54 -0400557 seq_printf(seq, "battery technology: rechargeable\n");
Rich Townsend3f86b832006-07-01 11:36:54 -0400558 seq_printf(seq, "design voltage: %i mV\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400559 battery->design_voltage * acpi_battery_vscale(battery));
Rich Townsend3f86b832006-07-01 11:36:54 -0400560 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");
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400564 seq_printf(seq, "model number: %s\n", battery->device_name);
Rich Townsend3f86b832006-07-01 11:36:54 -0400565 seq_printf(seq, "serial number: %i\n",
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400566 battery->serial_number);
Rich Townsend3f86b832006-07-01 11:36:54 -0400567 seq_printf(seq, "battery type: %s\n",
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400568 battery->device_chemistry);
Rich Townsend3f86b832006-07-01 11:36:54 -0400569 seq_printf(seq, "OEM info: %s\n",
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400570 battery->manufacturer_name);
Rich Townsend3f86b832006-07-01 11:36:54 -0400571 end:
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400572 mutex_unlock(&sbs->lock);
Len Brown635227e2006-07-01 16:48:23 -0400573 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400574}
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{
Vladimir Lebedev72206232007-03-19 17:45:50 +0300583 struct acpi_battery *battery = seq->private;
584 struct acpi_sbs *sbs = battery->sbs;
Alexey Starikovskiy5a21e4f2007-12-08 13:02:46 +0300585 int rate;
Rich Townsend3f86b832006-07-01 11:36:54 -0400586
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400587 mutex_lock(&sbs->lock);
588 seq_printf(seq, "present: %s\n",
589 (battery->present) ? "yes" : "no");
590 if (!battery->present)
Vladimir Lebedev72206232007-03-19 17:45:50 +0300591 goto end;
Rich Townsend3f86b832006-07-01 11:36:54 -0400592
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400593 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",
Alexey Starikovskiy7faa1442009-03-27 22:23:52 -0400597 (battery->rate_now < 0) ? "discharging" :
598 ((battery->rate_now > 0) ? "charging" : "charged"));
599 rate = abs(battery->rate_now) * acpi_battery_ipscale(battery);
Alexey Starikovskiy5a21e4f2007-12-08 13:02:46 +0300600 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",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400605 battery->capacity_now * acpi_battery_scale(battery),
606 acpi_battery_units(battery));
Rich Townsend3f86b832006-07-01 11:36:54 -0400607 seq_printf(seq, "present voltage: %i mV\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400608 battery->voltage_now * acpi_battery_vscale(battery));
Rich Townsend3f86b832006-07-01 11:36:54 -0400609
610 end:
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400611 mutex_unlock(&sbs->lock);
Alexey Starikovskiy5a21e4f2007-12-08 13:02:46 +0300612 return 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400613}
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{
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200622 struct acpi_battery *battery = seq->private;
Vladimir Lebedev72206232007-03-19 17:45:50 +0300623 struct acpi_sbs *sbs = battery->sbs;
Rich Townsend3f86b832006-07-01 11:36:54 -0400624 int result = 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400625
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400626 mutex_lock(&sbs->lock);
Rich Townsend3f86b832006-07-01 11:36:54 -0400627
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400628 if (!battery->present) {
Rich Townsend3f86b832006-07-01 11:36:54 -0400629 seq_printf(seq, "present: no\n");
630 goto end;
631 }
632
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400633 acpi_battery_get_alarm(battery);
Rich Townsend3f86b832006-07-01 11:36:54 -0400634 seq_printf(seq, "alarm: ");
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400635 if (battery->alarm_capacity)
Alexey Starikovskiy5a21e4f2007-12-08 13:02:46 +0300636 seq_printf(seq, "%i%sh\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400637 battery->alarm_capacity *
638 acpi_battery_scale(battery),
639 acpi_battery_units(battery));
640 else
Rich Townsend3f86b832006-07-01 11:36:54 -0400641 seq_printf(seq, "disabled\n");
Rich Townsend3f86b832006-07-01 11:36:54 -0400642 end:
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400643 mutex_unlock(&sbs->lock);
Len Brown635227e2006-07-01 16:48:23 -0400644 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400645}
646
647static ssize_t
648acpi_battery_write_alarm(struct file *file, const char __user * buffer,
649 size_t count, loff_t * ppos)
650{
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200651 struct seq_file *seq = file->private_data;
652 struct acpi_battery *battery = seq->private;
Vladimir Lebedev72206232007-03-19 17:45:50 +0300653 struct acpi_sbs *sbs = battery->sbs;
Rich Townsend3f86b832006-07-01 11:36:54 -0400654 char alarm_string[12] = { '\0' };
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400655 int result = 0;
656 mutex_lock(&sbs->lock);
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400657 if (!battery->present) {
Rich Townsend3f86b832006-07-01 11:36:54 -0400658 result = -ENODEV;
659 goto end;
660 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400661 if (count > sizeof(alarm_string) - 1) {
662 result = -EINVAL;
663 goto end;
664 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400665 if (copy_from_user(alarm_string, buffer, count)) {
666 result = -EFAULT;
667 goto end;
668 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400669 alarm_string[count] = 0;
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400670 battery->alarm_capacity = simple_strtoul(alarm_string, NULL, 0) /
671 acpi_battery_scale(battery);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400672 acpi_battery_set_alarm(battery);
Rich Townsend3f86b832006-07-01 11:36:54 -0400673 end:
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400674 mutex_unlock(&sbs->lock);
675 if (result)
Len Brown635227e2006-07-01 16:48:23 -0400676 return result;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400677 return count;
Rich Townsend3f86b832006-07-01 11:36:54 -0400678}
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{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400716
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200717 struct acpi_sbs *sbs = seq->private;
Rich Townsend3f86b832006-07-01 11:36:54 -0400718
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400719 mutex_lock(&sbs->lock);
Rich Townsend3f86b832006-07-01 11:36:54 -0400720
721 seq_printf(seq, "state: %s\n",
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400722 sbs->charger_present ? "on-line" : "off-line");
Rich Townsend3f86b832006-07-01 11:36:54 -0400723
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400724 mutex_unlock(&sbs->lock);
Len Brown635227e2006-07-01 16:48:23 -0400725 return 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400726}
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
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400741#endif
742
Rich Townsend3f86b832006-07-01 11:36:54 -0400743/* --------------------------------------------------------------------------
744 Driver Interface
745 -------------------------------------------------------------------------- */
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400746static int acpi_battery_read(struct acpi_battery *battery)
747{
748 int result = 0, saved_present = battery->present;
749 u16 state;
750
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;
764
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}
774
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400775/* Smart Battery */
Rich Townsend3f86b832006-07-01 11:36:54 -0400776static int acpi_battery_add(struct acpi_sbs *sbs, int id)
777{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400778 struct acpi_battery *battery = &sbs->battery[id];
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400779 int result;
780
Rich Townsend3f86b832006-07-01 11:36:54 -0400781 battery->id = id;
782 battery->sbs = sbs;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400783 result = acpi_battery_read(battery);
784 if (result)
785 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400786
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400787 sprintf(battery->name, ACPI_BATTERY_DIR_NAME, id);
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +0300788#ifdef CONFIG_ACPI_PROCFS_POWER
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400789 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);
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400793#endif
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500794#ifdef CONFIG_ACPI_SYSFS_POWER
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400795 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);
Jeff Garzik037cbc62007-11-18 00:32:31 +0300808 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:
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500815#endif
Vladimir Lebedev72206232007-03-19 17:45:50 +0300816 printk(KERN_INFO PREFIX "%s [%s]: Battery Slot [%s] (battery %s)\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400817 ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device),
Alexey Starikovskiybbafbec2008-02-09 03:22:13 -0500818 battery->name, battery->present ? "present" : "absent");
Len Brown635227e2006-07-01 16:48:23 -0400819 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400820}
821
822static void acpi_battery_remove(struct acpi_sbs *sbs, int id)
823{
Jeff Garzik037cbc62007-11-18 00:32:31 +0300824 struct acpi_battery *battery = &sbs->battery[id];
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500825#ifdef CONFIG_ACPI_SYSFS_POWER
Jeff Garzik037cbc62007-11-18 00:32:31 +0300826 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);
Rich Townsend3f86b832006-07-01 11:36:54 -0400830 }
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500831#endif
Len Brownc2e46d22007-11-20 01:20:00 -0500832#ifdef CONFIG_ACPI_PROCFS_POWER
Jeff Garzik037cbc62007-11-18 00:32:31 +0300833 if (battery->proc_entry)
834 acpi_sbs_remove_fs(&battery->proc_entry, acpi_battery_dir);
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400835#endif
Rich Townsend3f86b832006-07-01 11:36:54 -0400836}
837
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400838static int acpi_charger_add(struct acpi_sbs *sbs)
Rich Townsend3f86b832006-07-01 11:36:54 -0400839{
840 int result;
841
Rich Townsend3f86b832006-07-01 11:36:54 -0400842 result = acpi_ac_get_present(sbs);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400843 if (result)
Rich Townsend3f86b832006-07-01 11:36:54 -0400844 goto end;
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +0300845#ifdef CONFIG_ACPI_PROCFS_POWER
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400846 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)
Rich Townsend3f86b832006-07-01 11:36:54 -0400850 goto end;
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400851#endif
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500852#ifdef CONFIG_ACPI_SYSFS_POWER
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400853 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);
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500859#endif
Vladimir Lebedev72206232007-03-19 17:45:50 +0300860 printk(KERN_INFO PREFIX "%s [%s]: AC Adapter [%s] (%s)\n",
861 ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device),
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400862 ACPI_AC_DIR_NAME, sbs->charger_present ? "on-line" : "off-line");
Rich Townsend3f86b832006-07-01 11:36:54 -0400863 end:
Len Brown635227e2006-07-01 16:48:23 -0400864 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400865}
866
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400867static void acpi_charger_remove(struct acpi_sbs *sbs)
Rich Townsend3f86b832006-07-01 11:36:54 -0400868{
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500869#ifdef CONFIG_ACPI_SYSFS_POWER
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400870 if (sbs->charger.dev)
871 power_supply_unregister(&sbs->charger);
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500872#endif
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +0300873#ifdef CONFIG_ACPI_PROCFS_POWER
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400874 if (sbs->charger_entry)
875 acpi_sbs_remove_fs(&sbs->charger_entry, acpi_ac_dir);
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400876#endif
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400877}
878
Adrian Bunke5685b92007-10-24 18:24:42 +0200879static void acpi_sbs_callback(void *context)
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400880{
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) {
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400888#ifdef CONFIG_ACPI_PROC_EVENT
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400889 acpi_bus_generate_proc_event4(ACPI_AC_CLASS, ACPI_AC_DIR_NAME,
890 ACPI_SBS_NOTIFY_STATUS,
891 sbs->charger_present);
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400892#endif
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500893#ifdef CONFIG_ACPI_SYSFS_POWER
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400894 kobject_uevent(&sbs->charger.dev->kobj, KOBJ_CHANGE);
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500895#endif
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400896 }
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;
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400906#ifdef CONFIG_ACPI_PROC_EVENT
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400907 acpi_bus_generate_proc_event4(ACPI_BATTERY_CLASS,
908 bat->name,
909 ACPI_SBS_NOTIFY_STATUS,
910 bat->present);
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400911#endif
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500912#ifdef CONFIG_ACPI_SYSFS_POWER
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400913 kobject_uevent(&bat->bat.dev->kobj, KOBJ_CHANGE);
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500914#endif
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400915 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400916 }
917}
918
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400919static int acpi_sbs_remove(struct acpi_device *device, int type);
Rich Townsend3f86b832006-07-01 11:36:54 -0400920
921static int acpi_sbs_add(struct acpi_device *device)
922{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400923 struct acpi_sbs *sbs;
924 int result = 0;
Vladimir Lebedev6d157022007-03-19 17:45:50 +0300925 int id;
Rich Townsend3f86b832006-07-01 11:36:54 -0400926
Burman Yan36bcbec2006-12-19 12:56:11 -0800927 sbs = kzalloc(sizeof(struct acpi_sbs), GFP_KERNEL);
Rich Townsend3f86b832006-07-01 11:36:54 -0400928 if (!sbs) {
Vladimir Lebedev72206232007-03-19 17:45:50 +0300929 result = -ENOMEM;
930 goto end;
Rich Townsend3f86b832006-07-01 11:36:54 -0400931 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400932
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400933 mutex_init(&sbs->lock);
Vladimir Lebedev72206232007-03-19 17:45:50 +0300934
Alexey Starikovskiy91087df2007-09-26 19:43:28 +0400935 sbs->hc = acpi_driver_data(device->parent);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400936 sbs->device = device;
Rich Townsend3f86b832006-07-01 11:36:54 -0400937 strcpy(acpi_device_name(device), ACPI_SBS_DEVICE_NAME);
938 strcpy(acpi_device_class(device), ACPI_SBS_CLASS);
Pavel Machekdb89b4f2008-09-22 14:37:34 -0700939 device->driver_data = sbs;
Rich Townsend3f86b832006-07-01 11:36:54 -0400940
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400941 result = acpi_charger_add(sbs);
Vladimir Lebedev72206232007-03-19 17:45:50 +0300942 if (result)
943 goto end;
Rich Townsend3f86b832006-07-01 11:36:54 -0400944
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400945 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);
Rich Townsend3f86b832006-07-01 11:36:54 -0400954 end:
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400955 if (result)
956 acpi_sbs_remove(device, 0);
Len Brown635227e2006-07-01 16:48:23 -0400957 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400958}
959
Vladimir Lebedev72206232007-03-19 17:45:50 +0300960static int acpi_sbs_remove(struct acpi_device *device, int type)
Rich Townsend3f86b832006-07-01 11:36:54 -0400961{
Len Browncece9012006-12-16 01:04:27 -0500962 struct acpi_sbs *sbs;
Rich Townsend3f86b832006-07-01 11:36:54 -0400963 int id;
964
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400965 if (!device)
Lebedev, Vladimir P963497c2006-09-05 19:49:13 +0400966 return -EINVAL;
Vladimir Lebedev72206232007-03-19 17:45:50 +0300967 sbs = acpi_driver_data(device);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400968 if (!sbs)
Len Brown635227e2006-07-01 16:48:23 -0400969 return -EINVAL;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400970 mutex_lock(&sbs->lock);
971 acpi_smbus_unregister_callback(sbs->hc);
972 for (id = 0; id < MAX_SBS_BAT; ++id)
Rich Townsend3f86b832006-07-01 11:36:54 -0400973 acpi_battery_remove(sbs, id);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400974 acpi_charger_remove(sbs);
975 mutex_unlock(&sbs->lock);
976 mutex_destroy(&sbs->lock);
Rich Townsend3f86b832006-07-01 11:36:54 -0400977 kfree(sbs);
Len Brown635227e2006-07-01 16:48:23 -0400978 return 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400979}
980
Vladimir Lebedev72206232007-03-19 17:45:50 +0300981static void acpi_sbs_rmdirs(void)
982{
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +0300983#ifdef CONFIG_ACPI_PROCFS_POWER
Vladimir Lebedev72206232007-03-19 17:45:50 +0300984 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 }
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400992#endif
Vladimir Lebedev72206232007-03-19 17:45:50 +0300993}
994
995static int acpi_sbs_resume(struct acpi_device *device)
996{
997 struct acpi_sbs *sbs;
Vladimir Lebedev72206232007-03-19 17:45:50 +0300998 if (!device)
999 return -EINVAL;
Vladimir Lebedev72206232007-03-19 17:45:50 +03001000 sbs = device->driver_data;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +04001001 acpi_sbs_callback(sbs);
Vladimir Lebedev72206232007-03-19 17:45:50 +03001002 return 0;
1003}
1004
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +04001005static 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
Rich Townsend3f86b832006-07-01 11:36:54 -04001016static int __init acpi_sbs_init(void)
1017{
1018 int result = 0;
1019
Len Brownb20d2ae2006-08-15 23:21:37 -04001020 if (acpi_disabled)
1021 return -ENODEV;
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +03001022#ifdef CONFIG_ACPI_PROCFS_POWER
Rich Townsend3f86b832006-07-01 11:36:54 -04001023 acpi_ac_dir = acpi_lock_ac_dir();
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +04001024 if (!acpi_ac_dir)
Len Brown635227e2006-07-01 16:48:23 -04001025 return -ENODEV;
Rich Townsend3f86b832006-07-01 11:36:54 -04001026 acpi_battery_dir = acpi_lock_battery_dir();
1027 if (!acpi_battery_dir) {
Vladimir Lebedev72206232007-03-19 17:45:50 +03001028 acpi_sbs_rmdirs();
Len Brown635227e2006-07-01 16:48:23 -04001029 return -ENODEV;
Rich Townsend3f86b832006-07-01 11:36:54 -04001030 }
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +04001031#endif
Rich Townsend3f86b832006-07-01 11:36:54 -04001032 result = acpi_bus_register_driver(&acpi_sbs_driver);
1033 if (result < 0) {
Vladimir Lebedev72206232007-03-19 17:45:50 +03001034 acpi_sbs_rmdirs();
Len Brown635227e2006-07-01 16:48:23 -04001035 return -ENODEV;
Rich Townsend3f86b832006-07-01 11:36:54 -04001036 }
Len Brown635227e2006-07-01 16:48:23 -04001037 return 0;
Rich Townsend3f86b832006-07-01 11:36:54 -04001038}
1039
1040static void __exit acpi_sbs_exit(void)
1041{
Rich Townsend3f86b832006-07-01 11:36:54 -04001042 acpi_bus_unregister_driver(&acpi_sbs_driver);
Vladimir Lebedev72206232007-03-19 17:45:50 +03001043 acpi_sbs_rmdirs();
Len Brown635227e2006-07-01 16:48:23 -04001044 return;
Rich Townsend3f86b832006-07-01 11:36:54 -04001045}
1046
1047module_init(acpi_sbs_init);
1048module_exit(acpi_sbs_exit);