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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 = {
466 .attr = {.name = "alarm", .mode = 0644, .owner = THIS_MODULE},
467 .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{
486 struct proc_dir_entry *entry = NULL;
487
Rich Townsend3f86b832006-07-01 11:36:54 -0400488 if (!*dir) {
489 *dir = proc_mkdir(dir_name, parent_dir);
490 if (!*dir) {
Len Brown635227e2006-07-01 16:48:23 -0400491 return -ENODEV;
Rich Townsend3f86b832006-07-01 11:36:54 -0400492 }
493 (*dir)->owner = THIS_MODULE;
494 }
495
496 /* 'info' [R] */
497 if (info_fops) {
498 entry = create_proc_entry(ACPI_SBS_FILE_INFO, S_IRUGO, *dir);
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400499 if (entry) {
Rich Townsend3f86b832006-07-01 11:36:54 -0400500 entry->proc_fops = info_fops;
501 entry->data = data;
502 entry->owner = THIS_MODULE;
503 }
504 }
505
506 /* 'state' [R] */
507 if (state_fops) {
508 entry = create_proc_entry(ACPI_SBS_FILE_STATE, S_IRUGO, *dir);
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400509 if (entry) {
Rich Townsend3f86b832006-07-01 11:36:54 -0400510 entry->proc_fops = state_fops;
511 entry->data = data;
512 entry->owner = THIS_MODULE;
513 }
514 }
515
516 /* 'alarm' [R/W] */
517 if (alarm_fops) {
518 entry = create_proc_entry(ACPI_SBS_FILE_ALARM, S_IRUGO, *dir);
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400519 if (entry) {
Rich Townsend3f86b832006-07-01 11:36:54 -0400520 entry->proc_fops = alarm_fops;
521 entry->data = data;
522 entry->owner = THIS_MODULE;
523 }
524 }
Len Brown635227e2006-07-01 16:48:23 -0400525 return 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400526}
527
528static void
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400529acpi_sbs_remove_fs(struct proc_dir_entry **dir,
Rich Townsend3f86b832006-07-01 11:36:54 -0400530 struct proc_dir_entry *parent_dir)
531{
Rich Townsend3f86b832006-07-01 11:36:54 -0400532 if (*dir) {
533 remove_proc_entry(ACPI_SBS_FILE_INFO, *dir);
534 remove_proc_entry(ACPI_SBS_FILE_STATE, *dir);
535 remove_proc_entry(ACPI_SBS_FILE_ALARM, *dir);
536 remove_proc_entry((*dir)->name, parent_dir);
537 *dir = NULL;
538 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400539}
540
541/* Smart Battery Interface */
Rich Townsend3f86b832006-07-01 11:36:54 -0400542static struct proc_dir_entry *acpi_battery_dir = NULL;
543
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400544static inline char *acpi_battery_units(struct acpi_battery *battery)
545{
Alexey Starikovskiy5a21e4f2007-12-08 13:02:46 +0300546 return acpi_battery_mode(battery) ? " mW" : " mA";
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400547}
548
549
Rich Townsend3f86b832006-07-01 11:36:54 -0400550static int acpi_battery_read_info(struct seq_file *seq, void *offset)
551{
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200552 struct acpi_battery *battery = seq->private;
Vladimir Lebedev72206232007-03-19 17:45:50 +0300553 struct acpi_sbs *sbs = battery->sbs;
Rich Townsend3f86b832006-07-01 11:36:54 -0400554 int result = 0;
555
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400556 mutex_lock(&sbs->lock);
Rich Townsend3f86b832006-07-01 11:36:54 -0400557
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400558 seq_printf(seq, "present: %s\n",
559 (battery->present) ? "yes" : "no");
560 if (!battery->present)
Vladimir Lebedev72206232007-03-19 17:45:50 +0300561 goto end;
Rich Townsend3f86b832006-07-01 11:36:54 -0400562
Alexey Starikovskiy5a21e4f2007-12-08 13:02:46 +0300563 seq_printf(seq, "design capacity: %i%sh\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400564 battery->design_capacity * acpi_battery_scale(battery),
565 acpi_battery_units(battery));
Alexey Starikovskiy5a21e4f2007-12-08 13:02:46 +0300566 seq_printf(seq, "last full capacity: %i%sh\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400567 battery->full_charge_capacity * acpi_battery_scale(battery),
568 acpi_battery_units(battery));
Rich Townsend3f86b832006-07-01 11:36:54 -0400569 seq_printf(seq, "battery technology: rechargeable\n");
Rich Townsend3f86b832006-07-01 11:36:54 -0400570 seq_printf(seq, "design voltage: %i mV\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400571 battery->design_voltage * acpi_battery_vscale(battery));
Rich Townsend3f86b832006-07-01 11:36:54 -0400572 seq_printf(seq, "design capacity warning: unknown\n");
573 seq_printf(seq, "design capacity low: unknown\n");
574 seq_printf(seq, "capacity granularity 1: unknown\n");
575 seq_printf(seq, "capacity granularity 2: unknown\n");
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400576 seq_printf(seq, "model number: %s\n", battery->device_name);
Rich Townsend3f86b832006-07-01 11:36:54 -0400577 seq_printf(seq, "serial number: %i\n",
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400578 battery->serial_number);
Rich Townsend3f86b832006-07-01 11:36:54 -0400579 seq_printf(seq, "battery type: %s\n",
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400580 battery->device_chemistry);
Rich Townsend3f86b832006-07-01 11:36:54 -0400581 seq_printf(seq, "OEM info: %s\n",
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400582 battery->manufacturer_name);
Rich Townsend3f86b832006-07-01 11:36:54 -0400583 end:
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400584 mutex_unlock(&sbs->lock);
Len Brown635227e2006-07-01 16:48:23 -0400585 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400586}
587
588static int acpi_battery_info_open_fs(struct inode *inode, struct file *file)
589{
590 return single_open(file, acpi_battery_read_info, PDE(inode)->data);
591}
592
593static int acpi_battery_read_state(struct seq_file *seq, void *offset)
594{
Vladimir Lebedev72206232007-03-19 17:45:50 +0300595 struct acpi_battery *battery = seq->private;
596 struct acpi_sbs *sbs = battery->sbs;
Alexey Starikovskiy5a21e4f2007-12-08 13:02:46 +0300597 int rate;
Rich Townsend3f86b832006-07-01 11:36:54 -0400598
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400599 mutex_lock(&sbs->lock);
600 seq_printf(seq, "present: %s\n",
601 (battery->present) ? "yes" : "no");
602 if (!battery->present)
Vladimir Lebedev72206232007-03-19 17:45:50 +0300603 goto end;
Rich Townsend3f86b832006-07-01 11:36:54 -0400604
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400605 acpi_battery_get_state(battery);
606 seq_printf(seq, "capacity state: %s\n",
607 (battery->state & 0x0010) ? "critical" : "ok");
608 seq_printf(seq, "charging state: %s\n",
609 (battery->current_now < 0) ? "discharging" :
610 ((battery->current_now > 0) ? "charging" : "charged"));
Alexey Starikovskiy5a21e4f2007-12-08 13:02:46 +0300611 rate = abs(battery->current_now) * acpi_battery_ipscale(battery);
612 rate *= (acpi_battery_mode(battery))?(battery->voltage_now *
613 acpi_battery_vscale(battery)/1000):1;
614 seq_printf(seq, "present rate: %d%s\n", rate,
615 acpi_battery_units(battery));
616 seq_printf(seq, "remaining capacity: %i%sh\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400617 battery->capacity_now * acpi_battery_scale(battery),
618 acpi_battery_units(battery));
Rich Townsend3f86b832006-07-01 11:36:54 -0400619 seq_printf(seq, "present voltage: %i mV\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400620 battery->voltage_now * acpi_battery_vscale(battery));
Rich Townsend3f86b832006-07-01 11:36:54 -0400621
622 end:
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400623 mutex_unlock(&sbs->lock);
Alexey Starikovskiy5a21e4f2007-12-08 13:02:46 +0300624 return 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400625}
626
627static int acpi_battery_state_open_fs(struct inode *inode, struct file *file)
628{
629 return single_open(file, acpi_battery_read_state, PDE(inode)->data);
630}
631
632static int acpi_battery_read_alarm(struct seq_file *seq, void *offset)
633{
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200634 struct acpi_battery *battery = seq->private;
Vladimir Lebedev72206232007-03-19 17:45:50 +0300635 struct acpi_sbs *sbs = battery->sbs;
Rich Townsend3f86b832006-07-01 11:36:54 -0400636 int result = 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400637
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400638 mutex_lock(&sbs->lock);
Rich Townsend3f86b832006-07-01 11:36:54 -0400639
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400640 if (!battery->present) {
Rich Townsend3f86b832006-07-01 11:36:54 -0400641 seq_printf(seq, "present: no\n");
642 goto end;
643 }
644
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400645 acpi_battery_get_alarm(battery);
Rich Townsend3f86b832006-07-01 11:36:54 -0400646 seq_printf(seq, "alarm: ");
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400647 if (battery->alarm_capacity)
Alexey Starikovskiy5a21e4f2007-12-08 13:02:46 +0300648 seq_printf(seq, "%i%sh\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400649 battery->alarm_capacity *
650 acpi_battery_scale(battery),
651 acpi_battery_units(battery));
652 else
Rich Townsend3f86b832006-07-01 11:36:54 -0400653 seq_printf(seq, "disabled\n");
Rich Townsend3f86b832006-07-01 11:36:54 -0400654 end:
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400655 mutex_unlock(&sbs->lock);
Len Brown635227e2006-07-01 16:48:23 -0400656 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400657}
658
659static ssize_t
660acpi_battery_write_alarm(struct file *file, const char __user * buffer,
661 size_t count, loff_t * ppos)
662{
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200663 struct seq_file *seq = file->private_data;
664 struct acpi_battery *battery = seq->private;
Vladimir Lebedev72206232007-03-19 17:45:50 +0300665 struct acpi_sbs *sbs = battery->sbs;
Rich Townsend3f86b832006-07-01 11:36:54 -0400666 char alarm_string[12] = { '\0' };
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400667 int result = 0;
668 mutex_lock(&sbs->lock);
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400669 if (!battery->present) {
Rich Townsend3f86b832006-07-01 11:36:54 -0400670 result = -ENODEV;
671 goto end;
672 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400673 if (count > sizeof(alarm_string) - 1) {
674 result = -EINVAL;
675 goto end;
676 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400677 if (copy_from_user(alarm_string, buffer, count)) {
678 result = -EFAULT;
679 goto end;
680 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400681 alarm_string[count] = 0;
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400682 battery->alarm_capacity = simple_strtoul(alarm_string, NULL, 0) /
683 acpi_battery_scale(battery);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400684 acpi_battery_set_alarm(battery);
Rich Townsend3f86b832006-07-01 11:36:54 -0400685 end:
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400686 mutex_unlock(&sbs->lock);
687 if (result)
Len Brown635227e2006-07-01 16:48:23 -0400688 return result;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400689 return count;
Rich Townsend3f86b832006-07-01 11:36:54 -0400690}
691
692static int acpi_battery_alarm_open_fs(struct inode *inode, struct file *file)
693{
694 return single_open(file, acpi_battery_read_alarm, PDE(inode)->data);
695}
696
697static struct file_operations acpi_battery_info_fops = {
698 .open = acpi_battery_info_open_fs,
699 .read = seq_read,
700 .llseek = seq_lseek,
701 .release = single_release,
702 .owner = THIS_MODULE,
703};
704
705static struct file_operations acpi_battery_state_fops = {
706 .open = acpi_battery_state_open_fs,
707 .read = seq_read,
708 .llseek = seq_lseek,
709 .release = single_release,
710 .owner = THIS_MODULE,
711};
712
713static struct file_operations acpi_battery_alarm_fops = {
714 .open = acpi_battery_alarm_open_fs,
715 .read = seq_read,
716 .write = acpi_battery_write_alarm,
717 .llseek = seq_lseek,
718 .release = single_release,
719 .owner = THIS_MODULE,
720};
721
722/* Legacy AC Adapter Interface */
723
724static struct proc_dir_entry *acpi_ac_dir = NULL;
725
726static int acpi_ac_read_state(struct seq_file *seq, void *offset)
727{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400728
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200729 struct acpi_sbs *sbs = seq->private;
Rich Townsend3f86b832006-07-01 11:36:54 -0400730
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400731 mutex_lock(&sbs->lock);
Rich Townsend3f86b832006-07-01 11:36:54 -0400732
733 seq_printf(seq, "state: %s\n",
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400734 sbs->charger_present ? "on-line" : "off-line");
Rich Townsend3f86b832006-07-01 11:36:54 -0400735
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400736 mutex_unlock(&sbs->lock);
Len Brown635227e2006-07-01 16:48:23 -0400737 return 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400738}
739
740static int acpi_ac_state_open_fs(struct inode *inode, struct file *file)
741{
742 return single_open(file, acpi_ac_read_state, PDE(inode)->data);
743}
744
745static struct file_operations acpi_ac_state_fops = {
746 .open = acpi_ac_state_open_fs,
747 .read = seq_read,
748 .llseek = seq_lseek,
749 .release = single_release,
750 .owner = THIS_MODULE,
751};
752
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400753#endif
754
Rich Townsend3f86b832006-07-01 11:36:54 -0400755/* --------------------------------------------------------------------------
756 Driver Interface
757 -------------------------------------------------------------------------- */
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400758static int acpi_battery_read(struct acpi_battery *battery)
759{
760 int result = 0, saved_present = battery->present;
761 u16 state;
762
763 if (battery->sbs->manager_present) {
764 result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD,
765 ACPI_SBS_MANAGER, 0x01, (u8 *)&state);
766 if (!result)
767 battery->present = state & (1 << battery->id);
768 state &= 0x0fff;
769 state |= 1 << (battery->id + 12);
770 acpi_smbus_write(battery->sbs->hc, SMBUS_WRITE_WORD,
771 ACPI_SBS_MANAGER, 0x01, (u8 *)&state, 2);
772 } else if (battery->id == 0)
773 battery->present = 1;
774 if (result || !battery->present)
775 return result;
776
777 if (saved_present != battery->present) {
778 battery->update_time = 0;
779 result = acpi_battery_get_info(battery);
780 if (result)
781 return result;
782 }
783 result = acpi_battery_get_state(battery);
784 return result;
785}
786
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400787/* Smart Battery */
Rich Townsend3f86b832006-07-01 11:36:54 -0400788static int acpi_battery_add(struct acpi_sbs *sbs, int id)
789{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400790 struct acpi_battery *battery = &sbs->battery[id];
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400791 int result;
792
Rich Townsend3f86b832006-07-01 11:36:54 -0400793 battery->id = id;
794 battery->sbs = sbs;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400795 result = acpi_battery_read(battery);
796 if (result)
797 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400798
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400799 sprintf(battery->name, ACPI_BATTERY_DIR_NAME, id);
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +0300800#ifdef CONFIG_ACPI_PROCFS_POWER
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400801 acpi_sbs_add_fs(&battery->proc_entry, acpi_battery_dir,
802 battery->name, &acpi_battery_info_fops,
803 &acpi_battery_state_fops, &acpi_battery_alarm_fops,
804 battery);
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400805#endif
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500806#ifdef CONFIG_ACPI_SYSFS_POWER
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400807 battery->bat.name = battery->name;
808 battery->bat.type = POWER_SUPPLY_TYPE_BATTERY;
809 if (!acpi_battery_mode(battery)) {
810 battery->bat.properties = sbs_charge_battery_props;
811 battery->bat.num_properties =
812 ARRAY_SIZE(sbs_charge_battery_props);
813 } else {
814 battery->bat.properties = sbs_energy_battery_props;
815 battery->bat.num_properties =
816 ARRAY_SIZE(sbs_energy_battery_props);
817 }
818 battery->bat.get_property = acpi_sbs_battery_get_property;
819 result = power_supply_register(&sbs->device->dev, &battery->bat);
Jeff Garzik037cbc62007-11-18 00:32:31 +0300820 if (result)
821 goto end;
822 result = device_create_file(battery->bat.dev, &alarm_attr);
823 if (result)
824 goto end;
825 battery->have_sysfs_alarm = 1;
826 end:
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500827#endif
Vladimir Lebedev72206232007-03-19 17:45:50 +0300828 printk(KERN_INFO PREFIX "%s [%s]: Battery Slot [%s] (battery %s)\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400829 ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device),
830 battery->name, sbs->battery->present ? "present" : "absent");
Len Brown635227e2006-07-01 16:48:23 -0400831 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400832}
833
834static void acpi_battery_remove(struct acpi_sbs *sbs, int id)
835{
Jeff Garzik037cbc62007-11-18 00:32:31 +0300836 struct acpi_battery *battery = &sbs->battery[id];
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500837#ifdef CONFIG_ACPI_SYSFS_POWER
Jeff Garzik037cbc62007-11-18 00:32:31 +0300838 if (battery->bat.dev) {
839 if (battery->have_sysfs_alarm)
840 device_remove_file(battery->bat.dev, &alarm_attr);
841 power_supply_unregister(&battery->bat);
Rich Townsend3f86b832006-07-01 11:36:54 -0400842 }
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500843#endif
Len Brownc2e46d22007-11-20 01:20:00 -0500844#ifdef CONFIG_ACPI_PROCFS_POWER
Jeff Garzik037cbc62007-11-18 00:32:31 +0300845 if (battery->proc_entry)
846 acpi_sbs_remove_fs(&battery->proc_entry, acpi_battery_dir);
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400847#endif
Rich Townsend3f86b832006-07-01 11:36:54 -0400848}
849
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400850static int acpi_charger_add(struct acpi_sbs *sbs)
Rich Townsend3f86b832006-07-01 11:36:54 -0400851{
852 int result;
853
Rich Townsend3f86b832006-07-01 11:36:54 -0400854 result = acpi_ac_get_present(sbs);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400855 if (result)
Rich Townsend3f86b832006-07-01 11:36:54 -0400856 goto end;
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +0300857#ifdef CONFIG_ACPI_PROCFS_POWER
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400858 result = acpi_sbs_add_fs(&sbs->charger_entry, acpi_ac_dir,
859 ACPI_AC_DIR_NAME, NULL,
860 &acpi_ac_state_fops, NULL, sbs);
861 if (result)
Rich Townsend3f86b832006-07-01 11:36:54 -0400862 goto end;
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400863#endif
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500864#ifdef CONFIG_ACPI_SYSFS_POWER
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400865 sbs->charger.name = "sbs-charger";
866 sbs->charger.type = POWER_SUPPLY_TYPE_MAINS;
867 sbs->charger.properties = sbs_ac_props;
868 sbs->charger.num_properties = ARRAY_SIZE(sbs_ac_props);
869 sbs->charger.get_property = sbs_get_ac_property;
870 power_supply_register(&sbs->device->dev, &sbs->charger);
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500871#endif
Vladimir Lebedev72206232007-03-19 17:45:50 +0300872 printk(KERN_INFO PREFIX "%s [%s]: AC Adapter [%s] (%s)\n",
873 ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device),
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400874 ACPI_AC_DIR_NAME, sbs->charger_present ? "on-line" : "off-line");
Rich Townsend3f86b832006-07-01 11:36:54 -0400875 end:
Len Brown635227e2006-07-01 16:48:23 -0400876 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400877}
878
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400879static void acpi_charger_remove(struct acpi_sbs *sbs)
Rich Townsend3f86b832006-07-01 11:36:54 -0400880{
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500881#ifdef CONFIG_ACPI_SYSFS_POWER
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400882 if (sbs->charger.dev)
883 power_supply_unregister(&sbs->charger);
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500884#endif
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +0300885#ifdef CONFIG_ACPI_PROCFS_POWER
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400886 if (sbs->charger_entry)
887 acpi_sbs_remove_fs(&sbs->charger_entry, acpi_ac_dir);
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400888#endif
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400889}
890
891void acpi_sbs_callback(void *context)
892{
893 int id;
894 struct acpi_sbs *sbs = context;
895 struct acpi_battery *bat;
896 u8 saved_charger_state = sbs->charger_present;
897 u8 saved_battery_state;
898 acpi_ac_get_present(sbs);
899 if (sbs->charger_present != saved_charger_state) {
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400900#ifdef CONFIG_ACPI_PROC_EVENT
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400901 acpi_bus_generate_proc_event4(ACPI_AC_CLASS, ACPI_AC_DIR_NAME,
902 ACPI_SBS_NOTIFY_STATUS,
903 sbs->charger_present);
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400904#endif
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500905#ifdef CONFIG_ACPI_SYSFS_POWER
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400906 kobject_uevent(&sbs->charger.dev->kobj, KOBJ_CHANGE);
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500907#endif
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400908 }
909 if (sbs->manager_present) {
910 for (id = 0; id < MAX_SBS_BAT; ++id) {
911 if (!(sbs->batteries_supported & (1 << id)))
912 continue;
913 bat = &sbs->battery[id];
914 saved_battery_state = bat->present;
915 acpi_battery_read(bat);
916 if (saved_battery_state == bat->present)
917 continue;
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400918#ifdef CONFIG_ACPI_PROC_EVENT
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400919 acpi_bus_generate_proc_event4(ACPI_BATTERY_CLASS,
920 bat->name,
921 ACPI_SBS_NOTIFY_STATUS,
922 bat->present);
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400923#endif
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500924#ifdef CONFIG_ACPI_SYSFS_POWER
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400925 kobject_uevent(&bat->bat.dev->kobj, KOBJ_CHANGE);
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -0500926#endif
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400927 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400928 }
929}
930
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400931static int acpi_sbs_remove(struct acpi_device *device, int type);
Rich Townsend3f86b832006-07-01 11:36:54 -0400932
933static int acpi_sbs_add(struct acpi_device *device)
934{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400935 struct acpi_sbs *sbs;
936 int result = 0;
Vladimir Lebedev6d157022007-03-19 17:45:50 +0300937 int id;
Rich Townsend3f86b832006-07-01 11:36:54 -0400938
Burman Yan36bcbec2006-12-19 12:56:11 -0800939 sbs = kzalloc(sizeof(struct acpi_sbs), GFP_KERNEL);
Rich Townsend3f86b832006-07-01 11:36:54 -0400940 if (!sbs) {
Vladimir Lebedev72206232007-03-19 17:45:50 +0300941 result = -ENOMEM;
942 goto end;
Rich Townsend3f86b832006-07-01 11:36:54 -0400943 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400944
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400945 mutex_init(&sbs->lock);
Vladimir Lebedev72206232007-03-19 17:45:50 +0300946
Alexey Starikovskiy91087df2007-09-26 19:43:28 +0400947 sbs->hc = acpi_driver_data(device->parent);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400948 sbs->device = device;
Rich Townsend3f86b832006-07-01 11:36:54 -0400949 strcpy(acpi_device_name(device), ACPI_SBS_DEVICE_NAME);
950 strcpy(acpi_device_class(device), ACPI_SBS_CLASS);
951 acpi_driver_data(device) = sbs;
952
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400953 result = acpi_charger_add(sbs);
Vladimir Lebedev72206232007-03-19 17:45:50 +0300954 if (result)
955 goto end;
Rich Townsend3f86b832006-07-01 11:36:54 -0400956
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400957 result = acpi_manager_get_info(sbs);
958 if (!result) {
959 sbs->manager_present = 1;
960 for (id = 0; id < MAX_SBS_BAT; ++id)
961 if ((sbs->batteries_supported & (1 << id)))
962 acpi_battery_add(sbs, id);
963 } else
964 acpi_battery_add(sbs, 0);
965 acpi_smbus_register_callback(sbs->hc, acpi_sbs_callback, sbs);
Rich Townsend3f86b832006-07-01 11:36:54 -0400966 end:
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400967 if (result)
968 acpi_sbs_remove(device, 0);
Len Brown635227e2006-07-01 16:48:23 -0400969 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400970}
971
Vladimir Lebedev72206232007-03-19 17:45:50 +0300972static int acpi_sbs_remove(struct acpi_device *device, int type)
Rich Townsend3f86b832006-07-01 11:36:54 -0400973{
Len Browncece9012006-12-16 01:04:27 -0500974 struct acpi_sbs *sbs;
Rich Townsend3f86b832006-07-01 11:36:54 -0400975 int id;
976
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400977 if (!device)
Lebedev, Vladimir P963497c2006-09-05 19:49:13 +0400978 return -EINVAL;
Vladimir Lebedev72206232007-03-19 17:45:50 +0300979 sbs = acpi_driver_data(device);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400980 if (!sbs)
Len Brown635227e2006-07-01 16:48:23 -0400981 return -EINVAL;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400982 mutex_lock(&sbs->lock);
983 acpi_smbus_unregister_callback(sbs->hc);
984 for (id = 0; id < MAX_SBS_BAT; ++id)
Rich Townsend3f86b832006-07-01 11:36:54 -0400985 acpi_battery_remove(sbs, id);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400986 acpi_charger_remove(sbs);
987 mutex_unlock(&sbs->lock);
988 mutex_destroy(&sbs->lock);
Rich Townsend3f86b832006-07-01 11:36:54 -0400989 kfree(sbs);
Len Brown635227e2006-07-01 16:48:23 -0400990 return 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400991}
992
Vladimir Lebedev72206232007-03-19 17:45:50 +0300993static void acpi_sbs_rmdirs(void)
994{
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +0300995#ifdef CONFIG_ACPI_PROCFS_POWER
Vladimir Lebedev72206232007-03-19 17:45:50 +0300996 if (acpi_ac_dir) {
997 acpi_unlock_ac_dir(acpi_ac_dir);
998 acpi_ac_dir = NULL;
999 }
1000 if (acpi_battery_dir) {
1001 acpi_unlock_battery_dir(acpi_battery_dir);
1002 acpi_battery_dir = NULL;
1003 }
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +04001004#endif
Vladimir Lebedev72206232007-03-19 17:45:50 +03001005}
1006
1007static int acpi_sbs_resume(struct acpi_device *device)
1008{
1009 struct acpi_sbs *sbs;
Vladimir Lebedev72206232007-03-19 17:45:50 +03001010 if (!device)
1011 return -EINVAL;
Vladimir Lebedev72206232007-03-19 17:45:50 +03001012 sbs = device->driver_data;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +04001013 acpi_sbs_callback(sbs);
Vladimir Lebedev72206232007-03-19 17:45:50 +03001014 return 0;
1015}
1016
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +04001017static struct acpi_driver acpi_sbs_driver = {
1018 .name = "sbs",
1019 .class = ACPI_SBS_CLASS,
1020 .ids = sbs_device_ids,
1021 .ops = {
1022 .add = acpi_sbs_add,
1023 .remove = acpi_sbs_remove,
1024 .resume = acpi_sbs_resume,
1025 },
1026};
1027
Rich Townsend3f86b832006-07-01 11:36:54 -04001028static int __init acpi_sbs_init(void)
1029{
1030 int result = 0;
1031
Len Brownb20d2ae2006-08-15 23:21:37 -04001032 if (acpi_disabled)
1033 return -ENODEV;
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +03001034#ifdef CONFIG_ACPI_PROCFS_POWER
Rich Townsend3f86b832006-07-01 11:36:54 -04001035 acpi_ac_dir = acpi_lock_ac_dir();
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +04001036 if (!acpi_ac_dir)
Len Brown635227e2006-07-01 16:48:23 -04001037 return -ENODEV;
Rich Townsend3f86b832006-07-01 11:36:54 -04001038 acpi_battery_dir = acpi_lock_battery_dir();
1039 if (!acpi_battery_dir) {
Vladimir Lebedev72206232007-03-19 17:45:50 +03001040 acpi_sbs_rmdirs();
Len Brown635227e2006-07-01 16:48:23 -04001041 return -ENODEV;
Rich Townsend3f86b832006-07-01 11:36:54 -04001042 }
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +04001043#endif
Rich Townsend3f86b832006-07-01 11:36:54 -04001044 result = acpi_bus_register_driver(&acpi_sbs_driver);
1045 if (result < 0) {
Vladimir Lebedev72206232007-03-19 17:45:50 +03001046 acpi_sbs_rmdirs();
Len Brown635227e2006-07-01 16:48:23 -04001047 return -ENODEV;
Rich Townsend3f86b832006-07-01 11:36:54 -04001048 }
Len Brown635227e2006-07-01 16:48:23 -04001049 return 0;
Rich Townsend3f86b832006-07-01 11:36:54 -04001050}
1051
1052static void __exit acpi_sbs_exit(void)
1053{
Rich Townsend3f86b832006-07-01 11:36:54 -04001054 acpi_bus_unregister_driver(&acpi_sbs_driver);
Vladimir Lebedev72206232007-03-19 17:45:50 +03001055 acpi_sbs_rmdirs();
Len Brown635227e2006-07-01 16:48:23 -04001056 return;
Rich Townsend3f86b832006-07-01 11:36:54 -04001057}
1058
1059module_init(acpi_sbs_init);
1060module_exit(acpi_sbs_exit);