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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;
105 s16 current_now;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400106 s16 current_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:
205 if (battery->current_now < 0)
206 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
207 else if (battery->current_now > 0)
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:
227 val->intval = abs(battery->current_now) *
228 acpi_battery_ipscale(battery) * 1000;
229 break;
230 case POWER_SUPPLY_PROP_CURRENT_AVG:
231 val->intval = abs(battery->current_avg) *
232 acpi_battery_ipscale(battery) * 1000;
233 break;
234 case POWER_SUPPLY_PROP_CAPACITY:
235 val->intval = battery->state_of_charge;
236 break;
237 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
238 case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
239 val->intval = battery->design_capacity *
240 acpi_battery_scale(battery) * 1000;
241 break;
242 case POWER_SUPPLY_PROP_CHARGE_FULL:
243 case POWER_SUPPLY_PROP_ENERGY_FULL:
244 val->intval = battery->full_charge_capacity *
245 acpi_battery_scale(battery) * 1000;
246 break;
247 case POWER_SUPPLY_PROP_CHARGE_NOW:
248 case POWER_SUPPLY_PROP_ENERGY_NOW:
249 val->intval = battery->capacity_now *
250 acpi_battery_scale(battery) * 1000;
251 break;
252 case POWER_SUPPLY_PROP_TEMP:
253 val->intval = battery->temp_now - 2730; // dK -> dC
254 break;
255 case POWER_SUPPLY_PROP_MODEL_NAME:
256 val->strval = battery->device_name;
257 break;
258 case POWER_SUPPLY_PROP_MANUFACTURER:
259 val->strval = battery->manufacturer_name;
260 break;
261 default:
262 return -EINVAL;
263 }
264 return 0;
265}
266
267static enum power_supply_property sbs_ac_props[] = {
268 POWER_SUPPLY_PROP_ONLINE,
269};
270
271static enum power_supply_property sbs_charge_battery_props[] = {
272 POWER_SUPPLY_PROP_STATUS,
273 POWER_SUPPLY_PROP_PRESENT,
274 POWER_SUPPLY_PROP_TECHNOLOGY,
275 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
276 POWER_SUPPLY_PROP_VOLTAGE_NOW,
277 POWER_SUPPLY_PROP_CURRENT_NOW,
278 POWER_SUPPLY_PROP_CURRENT_AVG,
279 POWER_SUPPLY_PROP_CAPACITY,
280 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
281 POWER_SUPPLY_PROP_CHARGE_FULL,
282 POWER_SUPPLY_PROP_CHARGE_NOW,
283 POWER_SUPPLY_PROP_TEMP,
284 POWER_SUPPLY_PROP_MODEL_NAME,
285 POWER_SUPPLY_PROP_MANUFACTURER,
286};
287
288static enum power_supply_property sbs_energy_battery_props[] = {
289 POWER_SUPPLY_PROP_STATUS,
290 POWER_SUPPLY_PROP_PRESENT,
291 POWER_SUPPLY_PROP_TECHNOLOGY,
292 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
293 POWER_SUPPLY_PROP_VOLTAGE_NOW,
294 POWER_SUPPLY_PROP_CURRENT_NOW,
295 POWER_SUPPLY_PROP_CURRENT_AVG,
296 POWER_SUPPLY_PROP_CAPACITY,
297 POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
298 POWER_SUPPLY_PROP_ENERGY_FULL,
299 POWER_SUPPLY_PROP_ENERGY_NOW,
300 POWER_SUPPLY_PROP_TEMP,
301 POWER_SUPPLY_PROP_MODEL_NAME,
302 POWER_SUPPLY_PROP_MANUFACTURER,
303};
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500304#endif
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400305
Rich Townsend3f86b832006-07-01 11:36:54 -0400306/* --------------------------------------------------------------------------
307 Smart Battery System Management
308 -------------------------------------------------------------------------- */
309
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400310struct acpi_battery_reader {
311 u8 command; /* command for battery */
312 u8 mode; /* word or block? */
313 size_t offset; /* offset inside struct acpi_sbs_battery */
314};
Vladimir Lebedev72206232007-03-19 17:45:50 +0300315
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400316static struct acpi_battery_reader info_readers[] = {
317 {0x01, SMBUS_READ_WORD, offsetof(struct acpi_battery, alarm_capacity)},
318 {0x03, SMBUS_READ_WORD, offsetof(struct acpi_battery, mode)},
319 {0x10, SMBUS_READ_WORD, offsetof(struct acpi_battery, full_charge_capacity)},
320 {0x17, SMBUS_READ_WORD, offsetof(struct acpi_battery, cycle_count)},
321 {0x18, SMBUS_READ_WORD, offsetof(struct acpi_battery, design_capacity)},
322 {0x19, SMBUS_READ_WORD, offsetof(struct acpi_battery, design_voltage)},
323 {0x1a, SMBUS_READ_WORD, offsetof(struct acpi_battery, spec)},
324 {0x1c, SMBUS_READ_WORD, offsetof(struct acpi_battery, serial_number)},
325 {0x20, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, manufacturer_name)},
326 {0x21, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, device_name)},
327 {0x22, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, device_chemistry)},
328};
Rich Townsend3f86b832006-07-01 11:36:54 -0400329
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400330static struct acpi_battery_reader state_readers[] = {
331 {0x08, SMBUS_READ_WORD, offsetof(struct acpi_battery, temp_now)},
332 {0x09, SMBUS_READ_WORD, offsetof(struct acpi_battery, voltage_now)},
333 {0x0a, SMBUS_READ_WORD, offsetof(struct acpi_battery, current_now)},
334 {0x0b, SMBUS_READ_WORD, offsetof(struct acpi_battery, current_avg)},
335 {0x0f, SMBUS_READ_WORD, offsetof(struct acpi_battery, capacity_now)},
336 {0x0e, SMBUS_READ_WORD, offsetof(struct acpi_battery, state_of_charge)},
337 {0x16, SMBUS_READ_WORD, offsetof(struct acpi_battery, state)},
338};
Rich Townsend3f86b832006-07-01 11:36:54 -0400339
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400340static int acpi_manager_get_info(struct acpi_sbs *sbs)
Rich Townsend3f86b832006-07-01 11:36:54 -0400341{
Rich Townsend3f86b832006-07-01 11:36:54 -0400342 int result = 0;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400343 u16 battery_system_info;
Rich Townsend3f86b832006-07-01 11:36:54 -0400344
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400345 result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER,
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400346 0x04, (u8 *)&battery_system_info);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400347 if (!result)
348 sbs->batteries_supported = battery_system_info & 0x000f;
Len Brown635227e2006-07-01 16:48:23 -0400349 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400350}
351
352static int acpi_battery_get_info(struct acpi_battery *battery)
353{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400354 int i, result = 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400355
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400356 for (i = 0; i < ARRAY_SIZE(info_readers); ++i) {
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400357 result = acpi_smbus_read(battery->sbs->hc,
358 info_readers[i].mode,
359 ACPI_SBS_BATTERY,
360 info_readers[i].command,
361 (u8 *) battery +
362 info_readers[i].offset);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400363 if (result)
364 break;
Rich Townsend3f86b832006-07-01 11:36:54 -0400365 }
Len Brown635227e2006-07-01 16:48:23 -0400366 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400367}
368
Rich Townsend3f86b832006-07-01 11:36:54 -0400369static int acpi_battery_get_state(struct acpi_battery *battery)
370{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400371 int i, result = 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400372
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400373 if (battery->update_time &&
374 time_before(jiffies, battery->update_time +
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400375 msecs_to_jiffies(cache_time)))
376 return 0;
377 for (i = 0; i < ARRAY_SIZE(state_readers); ++i) {
378 result = acpi_smbus_read(battery->sbs->hc,
379 state_readers[i].mode,
380 ACPI_SBS_BATTERY,
381 state_readers[i].command,
382 (u8 *)battery +
383 state_readers[i].offset);
384 if (result)
385 goto end;
Rich Townsend3f86b832006-07-01 11:36:54 -0400386 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400387 end:
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400388 battery->update_time = jiffies;
Len Brown635227e2006-07-01 16:48:23 -0400389 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400390}
391
392static int acpi_battery_get_alarm(struct acpi_battery *battery)
393{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400394 return acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD,
395 ACPI_SBS_BATTERY, 0x01,
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400396 (u8 *)&battery->alarm_capacity);
Rich Townsend3f86b832006-07-01 11:36:54 -0400397}
398
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400399static int acpi_battery_set_alarm(struct acpi_battery *battery)
Rich Townsend3f86b832006-07-01 11:36:54 -0400400{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400401 struct acpi_sbs *sbs = battery->sbs;
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400402 u16 value, sel = 1 << (battery->id + 12);
403
404 int ret;
405
Rich Townsend3f86b832006-07-01 11:36:54 -0400406
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400407 if (sbs->manager_present) {
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400408 ret = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER,
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400409 0x01, (u8 *)&value);
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400410 if (ret)
411 goto end;
412 if ((value & 0xf000) != sel) {
413 value &= 0x0fff;
414 value |= sel;
415 ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD,
416 ACPI_SBS_MANAGER,
417 0x01, (u8 *)&value, 2);
418 if (ret)
419 goto end;
420 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400421 }
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400422 ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, ACPI_SBS_BATTERY,
423 0x01, (u8 *)&battery->alarm_capacity, 2);
424 end:
425 return ret;
Rich Townsend3f86b832006-07-01 11:36:54 -0400426}
427
428static int acpi_ac_get_present(struct acpi_sbs *sbs)
429{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400430 int result;
431 u16 status;
Rich Townsend3f86b832006-07-01 11:36:54 -0400432
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400433 result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_CHARGER,
434 0x13, (u8 *) & status);
435 if (!result)
436 sbs->charger_present = (status >> 15) & 0x1;
Len Brown635227e2006-07-01 16:48:23 -0400437 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400438}
439
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500440#ifdef CONFIG_ACPI_SYSFS_POWER
Alexey Starikovskiy8bd95532007-09-26 19:44:00 +0400441static ssize_t acpi_battery_alarm_show(struct device *dev,
442 struct device_attribute *attr,
443 char *buf)
444{
445 struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev));
446 acpi_battery_get_alarm(battery);
447 return sprintf(buf, "%d\n", battery->alarm_capacity *
448 acpi_battery_scale(battery) * 1000);
449}
450
451static ssize_t acpi_battery_alarm_store(struct device *dev,
452 struct device_attribute *attr,
453 const char *buf, size_t count)
454{
455 unsigned long x;
456 struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev));
457 if (sscanf(buf, "%ld\n", &x) == 1)
458 battery->alarm_capacity = x /
459 (1000 * acpi_battery_scale(battery));
460 if (battery->present)
461 acpi_battery_set_alarm(battery);
462 return count;
463}
464
465static struct device_attribute alarm_attr = {
Parag Warudkar01e8ef12008-10-18 20:28:50 -0700466 .attr = {.name = "alarm", .mode = 0644},
Alexey Starikovskiy8bd95532007-09-26 19:44:00 +0400467 .show = acpi_battery_alarm_show,
468 .store = acpi_battery_alarm_store,
469};
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500470#endif
Alexey Starikovskiy8bd95532007-09-26 19:44:00 +0400471
Rich Townsend3f86b832006-07-01 11:36:54 -0400472/* --------------------------------------------------------------------------
473 FS Interface (/proc/acpi)
474 -------------------------------------------------------------------------- */
475
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +0300476#ifdef CONFIG_ACPI_PROCFS_POWER
Rich Townsend3f86b832006-07-01 11:36:54 -0400477/* Generic Routines */
Rich Townsend3f86b832006-07-01 11:36:54 -0400478static int
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400479acpi_sbs_add_fs(struct proc_dir_entry **dir,
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400480 struct proc_dir_entry *parent_dir,
481 char *dir_name,
482 struct file_operations *info_fops,
483 struct file_operations *state_fops,
484 struct file_operations *alarm_fops, void *data)
Rich Townsend3f86b832006-07-01 11:36:54 -0400485{
Rich Townsend3f86b832006-07-01 11:36:54 -0400486 if (!*dir) {
487 *dir = proc_mkdir(dir_name, parent_dir);
488 if (!*dir) {
Len Brown635227e2006-07-01 16:48:23 -0400489 return -ENODEV;
Rich Townsend3f86b832006-07-01 11:36:54 -0400490 }
491 (*dir)->owner = THIS_MODULE;
492 }
493
494 /* 'info' [R] */
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -0700495 if (info_fops)
496 proc_create_data(ACPI_SBS_FILE_INFO, S_IRUGO, *dir,
497 info_fops, data);
Rich Townsend3f86b832006-07-01 11:36:54 -0400498
499 /* 'state' [R] */
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -0700500 if (state_fops)
501 proc_create_data(ACPI_SBS_FILE_STATE, S_IRUGO, *dir,
502 state_fops, data);
Rich Townsend3f86b832006-07-01 11:36:54 -0400503
504 /* 'alarm' [R/W] */
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -0700505 if (alarm_fops)
506 proc_create_data(ACPI_SBS_FILE_ALARM, S_IRUGO, *dir,
507 alarm_fops, data);
Len Brown635227e2006-07-01 16:48:23 -0400508 return 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400509}
510
511static void
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400512acpi_sbs_remove_fs(struct proc_dir_entry **dir,
Rich Townsend3f86b832006-07-01 11:36:54 -0400513 struct proc_dir_entry *parent_dir)
514{
Rich Townsend3f86b832006-07-01 11:36:54 -0400515 if (*dir) {
516 remove_proc_entry(ACPI_SBS_FILE_INFO, *dir);
517 remove_proc_entry(ACPI_SBS_FILE_STATE, *dir);
518 remove_proc_entry(ACPI_SBS_FILE_ALARM, *dir);
519 remove_proc_entry((*dir)->name, parent_dir);
520 *dir = NULL;
521 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400522}
523
524/* Smart Battery Interface */
Rich Townsend3f86b832006-07-01 11:36:54 -0400525static struct proc_dir_entry *acpi_battery_dir = NULL;
526
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400527static inline char *acpi_battery_units(struct acpi_battery *battery)
528{
Alexey Starikovskiy5a21e4f2007-12-08 13:02:46 +0300529 return acpi_battery_mode(battery) ? " mW" : " mA";
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400530}
531
532
Rich Townsend3f86b832006-07-01 11:36:54 -0400533static int acpi_battery_read_info(struct seq_file *seq, void *offset)
534{
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200535 struct acpi_battery *battery = seq->private;
Vladimir Lebedev72206232007-03-19 17:45:50 +0300536 struct acpi_sbs *sbs = battery->sbs;
Rich Townsend3f86b832006-07-01 11:36:54 -0400537 int result = 0;
538
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400539 mutex_lock(&sbs->lock);
Rich Townsend3f86b832006-07-01 11:36:54 -0400540
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400541 seq_printf(seq, "present: %s\n",
542 (battery->present) ? "yes" : "no");
543 if (!battery->present)
Vladimir Lebedev72206232007-03-19 17:45:50 +0300544 goto end;
Rich Townsend3f86b832006-07-01 11:36:54 -0400545
Alexey Starikovskiy5a21e4f2007-12-08 13:02:46 +0300546 seq_printf(seq, "design capacity: %i%sh\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400547 battery->design_capacity * acpi_battery_scale(battery),
548 acpi_battery_units(battery));
Alexey Starikovskiy5a21e4f2007-12-08 13:02:46 +0300549 seq_printf(seq, "last full capacity: %i%sh\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400550 battery->full_charge_capacity * acpi_battery_scale(battery),
551 acpi_battery_units(battery));
Rich Townsend3f86b832006-07-01 11:36:54 -0400552 seq_printf(seq, "battery technology: rechargeable\n");
Rich Townsend3f86b832006-07-01 11:36:54 -0400553 seq_printf(seq, "design voltage: %i mV\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400554 battery->design_voltage * acpi_battery_vscale(battery));
Rich Townsend3f86b832006-07-01 11:36:54 -0400555 seq_printf(seq, "design capacity warning: unknown\n");
556 seq_printf(seq, "design capacity low: unknown\n");
557 seq_printf(seq, "capacity granularity 1: unknown\n");
558 seq_printf(seq, "capacity granularity 2: unknown\n");
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400559 seq_printf(seq, "model number: %s\n", battery->device_name);
Rich Townsend3f86b832006-07-01 11:36:54 -0400560 seq_printf(seq, "serial number: %i\n",
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400561 battery->serial_number);
Rich Townsend3f86b832006-07-01 11:36:54 -0400562 seq_printf(seq, "battery type: %s\n",
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400563 battery->device_chemistry);
Rich Townsend3f86b832006-07-01 11:36:54 -0400564 seq_printf(seq, "OEM info: %s\n",
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400565 battery->manufacturer_name);
Rich Townsend3f86b832006-07-01 11:36:54 -0400566 end:
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400567 mutex_unlock(&sbs->lock);
Len Brown635227e2006-07-01 16:48:23 -0400568 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400569}
570
571static int acpi_battery_info_open_fs(struct inode *inode, struct file *file)
572{
573 return single_open(file, acpi_battery_read_info, PDE(inode)->data);
574}
575
576static int acpi_battery_read_state(struct seq_file *seq, void *offset)
577{
Vladimir Lebedev72206232007-03-19 17:45:50 +0300578 struct acpi_battery *battery = seq->private;
579 struct acpi_sbs *sbs = battery->sbs;
Alexey Starikovskiy5a21e4f2007-12-08 13:02:46 +0300580 int rate;
Rich Townsend3f86b832006-07-01 11:36:54 -0400581
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400582 mutex_lock(&sbs->lock);
583 seq_printf(seq, "present: %s\n",
584 (battery->present) ? "yes" : "no");
585 if (!battery->present)
Vladimir Lebedev72206232007-03-19 17:45:50 +0300586 goto end;
Rich Townsend3f86b832006-07-01 11:36:54 -0400587
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400588 acpi_battery_get_state(battery);
589 seq_printf(seq, "capacity state: %s\n",
590 (battery->state & 0x0010) ? "critical" : "ok");
591 seq_printf(seq, "charging state: %s\n",
592 (battery->current_now < 0) ? "discharging" :
593 ((battery->current_now > 0) ? "charging" : "charged"));
Alexey Starikovskiy5a21e4f2007-12-08 13:02:46 +0300594 rate = abs(battery->current_now) * acpi_battery_ipscale(battery);
595 rate *= (acpi_battery_mode(battery))?(battery->voltage_now *
596 acpi_battery_vscale(battery)/1000):1;
597 seq_printf(seq, "present rate: %d%s\n", rate,
598 acpi_battery_units(battery));
599 seq_printf(seq, "remaining capacity: %i%sh\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400600 battery->capacity_now * acpi_battery_scale(battery),
601 acpi_battery_units(battery));
Rich Townsend3f86b832006-07-01 11:36:54 -0400602 seq_printf(seq, "present voltage: %i mV\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400603 battery->voltage_now * acpi_battery_vscale(battery));
Rich Townsend3f86b832006-07-01 11:36:54 -0400604
605 end:
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400606 mutex_unlock(&sbs->lock);
Alexey Starikovskiy5a21e4f2007-12-08 13:02:46 +0300607 return 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400608}
609
610static int acpi_battery_state_open_fs(struct inode *inode, struct file *file)
611{
612 return single_open(file, acpi_battery_read_state, PDE(inode)->data);
613}
614
615static int acpi_battery_read_alarm(struct seq_file *seq, void *offset)
616{
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200617 struct acpi_battery *battery = seq->private;
Vladimir Lebedev72206232007-03-19 17:45:50 +0300618 struct acpi_sbs *sbs = battery->sbs;
Rich Townsend3f86b832006-07-01 11:36:54 -0400619 int result = 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400620
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400621 mutex_lock(&sbs->lock);
Rich Townsend3f86b832006-07-01 11:36:54 -0400622
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400623 if (!battery->present) {
Rich Townsend3f86b832006-07-01 11:36:54 -0400624 seq_printf(seq, "present: no\n");
625 goto end;
626 }
627
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400628 acpi_battery_get_alarm(battery);
Rich Townsend3f86b832006-07-01 11:36:54 -0400629 seq_printf(seq, "alarm: ");
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400630 if (battery->alarm_capacity)
Alexey Starikovskiy5a21e4f2007-12-08 13:02:46 +0300631 seq_printf(seq, "%i%sh\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400632 battery->alarm_capacity *
633 acpi_battery_scale(battery),
634 acpi_battery_units(battery));
635 else
Rich Townsend3f86b832006-07-01 11:36:54 -0400636 seq_printf(seq, "disabled\n");
Rich Townsend3f86b832006-07-01 11:36:54 -0400637 end:
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400638 mutex_unlock(&sbs->lock);
Len Brown635227e2006-07-01 16:48:23 -0400639 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400640}
641
642static ssize_t
643acpi_battery_write_alarm(struct file *file, const char __user * buffer,
644 size_t count, loff_t * ppos)
645{
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200646 struct seq_file *seq = file->private_data;
647 struct acpi_battery *battery = seq->private;
Vladimir Lebedev72206232007-03-19 17:45:50 +0300648 struct acpi_sbs *sbs = battery->sbs;
Rich Townsend3f86b832006-07-01 11:36:54 -0400649 char alarm_string[12] = { '\0' };
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400650 int result = 0;
651 mutex_lock(&sbs->lock);
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400652 if (!battery->present) {
Rich Townsend3f86b832006-07-01 11:36:54 -0400653 result = -ENODEV;
654 goto end;
655 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400656 if (count > sizeof(alarm_string) - 1) {
657 result = -EINVAL;
658 goto end;
659 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400660 if (copy_from_user(alarm_string, buffer, count)) {
661 result = -EFAULT;
662 goto end;
663 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400664 alarm_string[count] = 0;
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400665 battery->alarm_capacity = simple_strtoul(alarm_string, NULL, 0) /
666 acpi_battery_scale(battery);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400667 acpi_battery_set_alarm(battery);
Rich Townsend3f86b832006-07-01 11:36:54 -0400668 end:
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400669 mutex_unlock(&sbs->lock);
670 if (result)
Len Brown635227e2006-07-01 16:48:23 -0400671 return result;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400672 return count;
Rich Townsend3f86b832006-07-01 11:36:54 -0400673}
674
675static int acpi_battery_alarm_open_fs(struct inode *inode, struct file *file)
676{
677 return single_open(file, acpi_battery_read_alarm, PDE(inode)->data);
678}
679
680static struct file_operations acpi_battery_info_fops = {
681 .open = acpi_battery_info_open_fs,
682 .read = seq_read,
683 .llseek = seq_lseek,
684 .release = single_release,
685 .owner = THIS_MODULE,
686};
687
688static struct file_operations acpi_battery_state_fops = {
689 .open = acpi_battery_state_open_fs,
690 .read = seq_read,
691 .llseek = seq_lseek,
692 .release = single_release,
693 .owner = THIS_MODULE,
694};
695
696static struct file_operations acpi_battery_alarm_fops = {
697 .open = acpi_battery_alarm_open_fs,
698 .read = seq_read,
699 .write = acpi_battery_write_alarm,
700 .llseek = seq_lseek,
701 .release = single_release,
702 .owner = THIS_MODULE,
703};
704
705/* Legacy AC Adapter Interface */
706
707static struct proc_dir_entry *acpi_ac_dir = NULL;
708
709static int acpi_ac_read_state(struct seq_file *seq, void *offset)
710{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400711
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200712 struct acpi_sbs *sbs = seq->private;
Rich Townsend3f86b832006-07-01 11:36:54 -0400713
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400714 mutex_lock(&sbs->lock);
Rich Townsend3f86b832006-07-01 11:36:54 -0400715
716 seq_printf(seq, "state: %s\n",
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400717 sbs->charger_present ? "on-line" : "off-line");
Rich Townsend3f86b832006-07-01 11:36:54 -0400718
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400719 mutex_unlock(&sbs->lock);
Len Brown635227e2006-07-01 16:48:23 -0400720 return 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400721}
722
723static int acpi_ac_state_open_fs(struct inode *inode, struct file *file)
724{
725 return single_open(file, acpi_ac_read_state, PDE(inode)->data);
726}
727
728static struct file_operations acpi_ac_state_fops = {
729 .open = acpi_ac_state_open_fs,
730 .read = seq_read,
731 .llseek = seq_lseek,
732 .release = single_release,
733 .owner = THIS_MODULE,
734};
735
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400736#endif
737
Rich Townsend3f86b832006-07-01 11:36:54 -0400738/* --------------------------------------------------------------------------
739 Driver Interface
740 -------------------------------------------------------------------------- */
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400741static int acpi_battery_read(struct acpi_battery *battery)
742{
743 int result = 0, saved_present = battery->present;
744 u16 state;
745
746 if (battery->sbs->manager_present) {
747 result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD,
748 ACPI_SBS_MANAGER, 0x01, (u8 *)&state);
749 if (!result)
750 battery->present = state & (1 << battery->id);
751 state &= 0x0fff;
752 state |= 1 << (battery->id + 12);
753 acpi_smbus_write(battery->sbs->hc, SMBUS_WRITE_WORD,
754 ACPI_SBS_MANAGER, 0x01, (u8 *)&state, 2);
755 } else if (battery->id == 0)
756 battery->present = 1;
757 if (result || !battery->present)
758 return result;
759
760 if (saved_present != battery->present) {
761 battery->update_time = 0;
762 result = acpi_battery_get_info(battery);
763 if (result)
764 return result;
765 }
766 result = acpi_battery_get_state(battery);
767 return result;
768}
769
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400770/* Smart Battery */
Rich Townsend3f86b832006-07-01 11:36:54 -0400771static int acpi_battery_add(struct acpi_sbs *sbs, int id)
772{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400773 struct acpi_battery *battery = &sbs->battery[id];
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400774 int result;
775
Rich Townsend3f86b832006-07-01 11:36:54 -0400776 battery->id = id;
777 battery->sbs = sbs;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400778 result = acpi_battery_read(battery);
779 if (result)
780 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400781
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400782 sprintf(battery->name, ACPI_BATTERY_DIR_NAME, id);
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +0300783#ifdef CONFIG_ACPI_PROCFS_POWER
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400784 acpi_sbs_add_fs(&battery->proc_entry, acpi_battery_dir,
785 battery->name, &acpi_battery_info_fops,
786 &acpi_battery_state_fops, &acpi_battery_alarm_fops,
787 battery);
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400788#endif
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500789#ifdef CONFIG_ACPI_SYSFS_POWER
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400790 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);
Jeff Garzik037cbc62007-11-18 00:32:31 +0300803 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:
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500810#endif
Vladimir Lebedev72206232007-03-19 17:45:50 +0300811 printk(KERN_INFO PREFIX "%s [%s]: Battery Slot [%s] (battery %s)\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400812 ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device),
Alexey Starikovskiybbafbec2008-02-09 03:22:13 -0500813 battery->name, battery->present ? "present" : "absent");
Len Brown635227e2006-07-01 16:48:23 -0400814 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400815}
816
817static void acpi_battery_remove(struct acpi_sbs *sbs, int id)
818{
Jeff Garzik037cbc62007-11-18 00:32:31 +0300819 struct acpi_battery *battery = &sbs->battery[id];
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500820#ifdef CONFIG_ACPI_SYSFS_POWER
Jeff Garzik037cbc62007-11-18 00:32:31 +0300821 if (battery->bat.dev) {
822 if (battery->have_sysfs_alarm)
823 device_remove_file(battery->bat.dev, &alarm_attr);
824 power_supply_unregister(&battery->bat);
Rich Townsend3f86b832006-07-01 11:36:54 -0400825 }
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500826#endif
Len Brownc2e46d22007-11-20 01:20:00 -0500827#ifdef CONFIG_ACPI_PROCFS_POWER
Jeff Garzik037cbc62007-11-18 00:32:31 +0300828 if (battery->proc_entry)
829 acpi_sbs_remove_fs(&battery->proc_entry, acpi_battery_dir);
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400830#endif
Rich Townsend3f86b832006-07-01 11:36:54 -0400831}
832
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400833static int acpi_charger_add(struct acpi_sbs *sbs)
Rich Townsend3f86b832006-07-01 11:36:54 -0400834{
835 int result;
836
Rich Townsend3f86b832006-07-01 11:36:54 -0400837 result = acpi_ac_get_present(sbs);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400838 if (result)
Rich Townsend3f86b832006-07-01 11:36:54 -0400839 goto end;
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +0300840#ifdef CONFIG_ACPI_PROCFS_POWER
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400841 result = acpi_sbs_add_fs(&sbs->charger_entry, acpi_ac_dir,
842 ACPI_AC_DIR_NAME, NULL,
843 &acpi_ac_state_fops, NULL, sbs);
844 if (result)
Rich Townsend3f86b832006-07-01 11:36:54 -0400845 goto end;
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400846#endif
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500847#ifdef CONFIG_ACPI_SYSFS_POWER
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400848 sbs->charger.name = "sbs-charger";
849 sbs->charger.type = POWER_SUPPLY_TYPE_MAINS;
850 sbs->charger.properties = sbs_ac_props;
851 sbs->charger.num_properties = ARRAY_SIZE(sbs_ac_props);
852 sbs->charger.get_property = sbs_get_ac_property;
853 power_supply_register(&sbs->device->dev, &sbs->charger);
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500854#endif
Vladimir Lebedev72206232007-03-19 17:45:50 +0300855 printk(KERN_INFO PREFIX "%s [%s]: AC Adapter [%s] (%s)\n",
856 ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device),
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400857 ACPI_AC_DIR_NAME, sbs->charger_present ? "on-line" : "off-line");
Rich Townsend3f86b832006-07-01 11:36:54 -0400858 end:
Len Brown635227e2006-07-01 16:48:23 -0400859 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400860}
861
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400862static void acpi_charger_remove(struct acpi_sbs *sbs)
Rich Townsend3f86b832006-07-01 11:36:54 -0400863{
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500864#ifdef CONFIG_ACPI_SYSFS_POWER
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400865 if (sbs->charger.dev)
866 power_supply_unregister(&sbs->charger);
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500867#endif
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +0300868#ifdef CONFIG_ACPI_PROCFS_POWER
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400869 if (sbs->charger_entry)
870 acpi_sbs_remove_fs(&sbs->charger_entry, acpi_ac_dir);
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400871#endif
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400872}
873
Adrian Bunke5685b92007-10-24 18:24:42 +0200874static void acpi_sbs_callback(void *context)
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400875{
876 int id;
877 struct acpi_sbs *sbs = context;
878 struct acpi_battery *bat;
879 u8 saved_charger_state = sbs->charger_present;
880 u8 saved_battery_state;
881 acpi_ac_get_present(sbs);
882 if (sbs->charger_present != saved_charger_state) {
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400883#ifdef CONFIG_ACPI_PROC_EVENT
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400884 acpi_bus_generate_proc_event4(ACPI_AC_CLASS, ACPI_AC_DIR_NAME,
885 ACPI_SBS_NOTIFY_STATUS,
886 sbs->charger_present);
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400887#endif
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500888#ifdef CONFIG_ACPI_SYSFS_POWER
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400889 kobject_uevent(&sbs->charger.dev->kobj, KOBJ_CHANGE);
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500890#endif
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400891 }
892 if (sbs->manager_present) {
893 for (id = 0; id < MAX_SBS_BAT; ++id) {
894 if (!(sbs->batteries_supported & (1 << id)))
895 continue;
896 bat = &sbs->battery[id];
897 saved_battery_state = bat->present;
898 acpi_battery_read(bat);
899 if (saved_battery_state == bat->present)
900 continue;
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400901#ifdef CONFIG_ACPI_PROC_EVENT
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400902 acpi_bus_generate_proc_event4(ACPI_BATTERY_CLASS,
903 bat->name,
904 ACPI_SBS_NOTIFY_STATUS,
905 bat->present);
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400906#endif
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500907#ifdef CONFIG_ACPI_SYSFS_POWER
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400908 kobject_uevent(&bat->bat.dev->kobj, KOBJ_CHANGE);
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500909#endif
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400910 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400911 }
912}
913
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400914static int acpi_sbs_remove(struct acpi_device *device, int type);
Rich Townsend3f86b832006-07-01 11:36:54 -0400915
916static int acpi_sbs_add(struct acpi_device *device)
917{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400918 struct acpi_sbs *sbs;
919 int result = 0;
Vladimir Lebedev6d157022007-03-19 17:45:50 +0300920 int id;
Rich Townsend3f86b832006-07-01 11:36:54 -0400921
Burman Yan36bcbec2006-12-19 12:56:11 -0800922 sbs = kzalloc(sizeof(struct acpi_sbs), GFP_KERNEL);
Rich Townsend3f86b832006-07-01 11:36:54 -0400923 if (!sbs) {
Vladimir Lebedev72206232007-03-19 17:45:50 +0300924 result = -ENOMEM;
925 goto end;
Rich Townsend3f86b832006-07-01 11:36:54 -0400926 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400927
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400928 mutex_init(&sbs->lock);
Vladimir Lebedev72206232007-03-19 17:45:50 +0300929
Alexey Starikovskiy91087df2007-09-26 19:43:28 +0400930 sbs->hc = acpi_driver_data(device->parent);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400931 sbs->device = device;
Rich Townsend3f86b832006-07-01 11:36:54 -0400932 strcpy(acpi_device_name(device), ACPI_SBS_DEVICE_NAME);
933 strcpy(acpi_device_class(device), ACPI_SBS_CLASS);
Pavel Machekdb89b4f2008-09-22 14:37:34 -0700934 device->driver_data = sbs;
Rich Townsend3f86b832006-07-01 11:36:54 -0400935
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400936 result = acpi_charger_add(sbs);
Vladimir Lebedev72206232007-03-19 17:45:50 +0300937 if (result)
938 goto end;
Rich Townsend3f86b832006-07-01 11:36:54 -0400939
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400940 result = acpi_manager_get_info(sbs);
941 if (!result) {
942 sbs->manager_present = 1;
943 for (id = 0; id < MAX_SBS_BAT; ++id)
944 if ((sbs->batteries_supported & (1 << id)))
945 acpi_battery_add(sbs, id);
946 } else
947 acpi_battery_add(sbs, 0);
948 acpi_smbus_register_callback(sbs->hc, acpi_sbs_callback, sbs);
Rich Townsend3f86b832006-07-01 11:36:54 -0400949 end:
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400950 if (result)
951 acpi_sbs_remove(device, 0);
Len Brown635227e2006-07-01 16:48:23 -0400952 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400953}
954
Vladimir Lebedev72206232007-03-19 17:45:50 +0300955static int acpi_sbs_remove(struct acpi_device *device, int type)
Rich Townsend3f86b832006-07-01 11:36:54 -0400956{
Len Browncece9012006-12-16 01:04:27 -0500957 struct acpi_sbs *sbs;
Rich Townsend3f86b832006-07-01 11:36:54 -0400958 int id;
959
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400960 if (!device)
Lebedev, Vladimir P963497c2006-09-05 19:49:13 +0400961 return -EINVAL;
Vladimir Lebedev72206232007-03-19 17:45:50 +0300962 sbs = acpi_driver_data(device);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400963 if (!sbs)
Len Brown635227e2006-07-01 16:48:23 -0400964 return -EINVAL;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400965 mutex_lock(&sbs->lock);
966 acpi_smbus_unregister_callback(sbs->hc);
967 for (id = 0; id < MAX_SBS_BAT; ++id)
Rich Townsend3f86b832006-07-01 11:36:54 -0400968 acpi_battery_remove(sbs, id);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400969 acpi_charger_remove(sbs);
970 mutex_unlock(&sbs->lock);
971 mutex_destroy(&sbs->lock);
Rich Townsend3f86b832006-07-01 11:36:54 -0400972 kfree(sbs);
Len Brown635227e2006-07-01 16:48:23 -0400973 return 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400974}
975
Vladimir Lebedev72206232007-03-19 17:45:50 +0300976static void acpi_sbs_rmdirs(void)
977{
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +0300978#ifdef CONFIG_ACPI_PROCFS_POWER
Vladimir Lebedev72206232007-03-19 17:45:50 +0300979 if (acpi_ac_dir) {
980 acpi_unlock_ac_dir(acpi_ac_dir);
981 acpi_ac_dir = NULL;
982 }
983 if (acpi_battery_dir) {
984 acpi_unlock_battery_dir(acpi_battery_dir);
985 acpi_battery_dir = NULL;
986 }
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400987#endif
Vladimir Lebedev72206232007-03-19 17:45:50 +0300988}
989
990static int acpi_sbs_resume(struct acpi_device *device)
991{
992 struct acpi_sbs *sbs;
Vladimir Lebedev72206232007-03-19 17:45:50 +0300993 if (!device)
994 return -EINVAL;
Vladimir Lebedev72206232007-03-19 17:45:50 +0300995 sbs = device->driver_data;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400996 acpi_sbs_callback(sbs);
Vladimir Lebedev72206232007-03-19 17:45:50 +0300997 return 0;
998}
999
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +04001000static struct acpi_driver acpi_sbs_driver = {
1001 .name = "sbs",
1002 .class = ACPI_SBS_CLASS,
1003 .ids = sbs_device_ids,
1004 .ops = {
1005 .add = acpi_sbs_add,
1006 .remove = acpi_sbs_remove,
1007 .resume = acpi_sbs_resume,
1008 },
1009};
1010
Rich Townsend3f86b832006-07-01 11:36:54 -04001011static int __init acpi_sbs_init(void)
1012{
1013 int result = 0;
1014
Len Brownb20d2ae2006-08-15 23:21:37 -04001015 if (acpi_disabled)
1016 return -ENODEV;
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +03001017#ifdef CONFIG_ACPI_PROCFS_POWER
Rich Townsend3f86b832006-07-01 11:36:54 -04001018 acpi_ac_dir = acpi_lock_ac_dir();
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +04001019 if (!acpi_ac_dir)
Len Brown635227e2006-07-01 16:48:23 -04001020 return -ENODEV;
Rich Townsend3f86b832006-07-01 11:36:54 -04001021 acpi_battery_dir = acpi_lock_battery_dir();
1022 if (!acpi_battery_dir) {
Vladimir Lebedev72206232007-03-19 17:45:50 +03001023 acpi_sbs_rmdirs();
Len Brown635227e2006-07-01 16:48:23 -04001024 return -ENODEV;
Rich Townsend3f86b832006-07-01 11:36:54 -04001025 }
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +04001026#endif
Rich Townsend3f86b832006-07-01 11:36:54 -04001027 result = acpi_bus_register_driver(&acpi_sbs_driver);
1028 if (result < 0) {
Vladimir Lebedev72206232007-03-19 17:45:50 +03001029 acpi_sbs_rmdirs();
Len Brown635227e2006-07-01 16:48:23 -04001030 return -ENODEV;
Rich Townsend3f86b832006-07-01 11:36:54 -04001031 }
Len Brown635227e2006-07-01 16:48:23 -04001032 return 0;
Rich Townsend3f86b832006-07-01 11:36:54 -04001033}
1034
1035static void __exit acpi_sbs_exit(void)
1036{
Rich Townsend3f86b832006-07-01 11:36:54 -04001037 acpi_bus_unregister_driver(&acpi_sbs_driver);
Vladimir Lebedev72206232007-03-19 17:45:50 +03001038 acpi_sbs_rmdirs();
Len Brown635227e2006-07-01 16:48:23 -04001039 return;
Rich Townsend3f86b832006-07-01 11:36:54 -04001040}
1041
1042module_init(acpi_sbs_init);
1043module_exit(acpi_sbs_exit);