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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 Starikovskiy66e4b722007-09-26 19:43:54 +040032#ifdef CONFIG_ACPI_PROCFS
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 Starikovskiy94f6c082007-09-26 19:43:48 +040043#include <linux/power_supply.h>
44
Alexey Starikovskiy91087df2007-09-26 19:43:28 +040045#include "sbshc.h"
46
Rich Townsend3f86b832006-07-01 11:36:54 -040047#define ACPI_SBS_CLASS "sbs"
48#define ACPI_AC_CLASS "ac_adapter"
49#define ACPI_BATTERY_CLASS "battery"
Rich Townsend3f86b832006-07-01 11:36:54 -040050#define ACPI_SBS_DEVICE_NAME "Smart Battery System"
51#define ACPI_SBS_FILE_INFO "info"
52#define ACPI_SBS_FILE_STATE "state"
53#define ACPI_SBS_FILE_ALARM "alarm"
54#define ACPI_BATTERY_DIR_NAME "BAT%i"
55#define ACPI_AC_DIR_NAME "AC0"
Rich Townsend3f86b832006-07-01 11:36:54 -040056
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +040057enum acpi_sbs_device_addr {
58 ACPI_SBS_CHARGER = 0x9,
59 ACPI_SBS_MANAGER = 0xa,
60 ACPI_SBS_BATTERY = 0xb,
61};
62
63#define ACPI_SBS_NOTIFY_STATUS 0x80
64#define ACPI_SBS_NOTIFY_INFO 0x81
Rich Townsend3f86b832006-07-01 11:36:54 -040065
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +040066MODULE_AUTHOR("Alexey Starikovskiy <astarikovskiy@suse.de>");
Rich Townsend3f86b832006-07-01 11:36:54 -040067MODULE_DESCRIPTION("Smart Battery System ACPI interface driver");
68MODULE_LICENSE("GPL");
69
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +040070static unsigned int cache_time = 1000;
71module_param(cache_time, uint, 0644);
72MODULE_PARM_DESC(cache_time, "cache time in milliseconds");
Vladimir Lebedev6d157022007-03-19 17:45:50 +030073
74extern struct proc_dir_entry *acpi_lock_ac_dir(void);
75extern struct proc_dir_entry *acpi_lock_battery_dir(void);
76extern void acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir);
77extern void acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir);
78
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +040079#define MAX_SBS_BAT 4
Vladimir Lebedev6d157022007-03-19 17:45:50 +030080#define ACPI_SBS_BLOCK_MAX 32
81
Thomas Renninger1ba90e32007-07-23 14:44:41 +020082static const struct acpi_device_id sbs_device_ids[] = {
Alexey Starikovskiy91087df2007-09-26 19:43:28 +040083 {"ACPI0002", 0},
Thomas Renninger1ba90e32007-07-23 14:44:41 +020084 {"", 0},
85};
86MODULE_DEVICE_TABLE(acpi, sbs_device_ids);
87
Alexey Starikovskiy89862e32007-09-26 19:43:35 +040088struct acpi_battery {
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +040089 struct power_supply bat;
Alexey Starikovskiy89862e32007-09-26 19:43:35 +040090 struct acpi_sbs *sbs;
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +040091#ifdef CONFIG_ACPI_PROCFS
Alexey Starikovskiy89862e32007-09-26 19:43:35 +040092 struct proc_dir_entry *proc_entry;
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +040093#endif
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +040094 unsigned long update_time;
95 char name[8];
Alexey Starikovskiy89862e32007-09-26 19:43:35 +040096 char manufacturer_name[ACPI_SBS_BLOCK_MAX];
97 char device_name[ACPI_SBS_BLOCK_MAX];
98 char device_chemistry[ACPI_SBS_BLOCK_MAX];
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +040099 u16 alarm_capacity;
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400100 u16 full_charge_capacity;
101 u16 design_capacity;
102 u16 design_voltage;
103 u16 serial_number;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400104 u16 cycle_count;
105 u16 temp_now;
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400106 u16 voltage_now;
107 s16 current_now;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400108 s16 current_avg;
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400109 u16 capacity_now;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400110 u16 state_of_charge;
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400111 u16 state;
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400112 u16 mode;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400113 u16 spec;
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400114 u8 id;
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400115 u8 present:1;
Rich Townsend3f86b832006-07-01 11:36:54 -0400116};
117
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400118#define to_acpi_battery(x) container_of(x, struct acpi_battery, bat);
119
Rich Townsend3f86b832006-07-01 11:36:54 -0400120struct acpi_sbs {
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400121 struct power_supply charger;
Rich Townsend3f86b832006-07-01 11:36:54 -0400122 struct acpi_device *device;
Alexey Starikovskiy91087df2007-09-26 19:43:28 +0400123 struct acpi_smb_hc *hc;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400124 struct mutex lock;
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400125#ifdef CONFIG_ACPI_PROCFS
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400126 struct proc_dir_entry *charger_entry;
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400127#endif
Rich Townsend3f86b832006-07-01 11:36:54 -0400128 struct acpi_battery battery[MAX_SBS_BAT];
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400129 u8 batteries_supported:4;
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400130 u8 manager_present:1;
131 u8 charger_present:1;
Rich Townsend3f86b832006-07-01 11:36:54 -0400132};
133
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400134#define to_acpi_sbs(x) container_of(x, struct acpi_sbs, charger)
135
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400136static inline int battery_scale(int log)
Vladimir Lebedev72206232007-03-19 17:45:50 +0300137{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400138 int scale = 1;
139 while (log--)
140 scale *= 10;
141 return scale;
Vladimir Lebedev72206232007-03-19 17:45:50 +0300142}
143
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400144static inline int acpi_battery_vscale(struct acpi_battery *battery)
Vladimir Lebedev72206232007-03-19 17:45:50 +0300145{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400146 return battery_scale((battery->spec & 0x0f00) >> 8);
Vladimir Lebedev72206232007-03-19 17:45:50 +0300147}
148
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400149static inline int acpi_battery_ipscale(struct acpi_battery *battery)
Vladimir Lebedev72206232007-03-19 17:45:50 +0300150{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400151 return battery_scale((battery->spec & 0xf000) >> 12);
152}
153
154static inline int acpi_battery_mode(struct acpi_battery *battery)
155{
156 return (battery->mode & 0x8000);
157}
158
159static inline int acpi_battery_scale(struct acpi_battery *battery)
160{
161 return (acpi_battery_mode(battery) ? 10 : 1) *
162 acpi_battery_ipscale(battery);
Vladimir Lebedev72206232007-03-19 17:45:50 +0300163}
164
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400165static int sbs_get_ac_property(struct power_supply *psy,
166 enum power_supply_property psp,
167 union power_supply_propval *val)
168{
169 struct acpi_sbs *sbs = to_acpi_sbs(psy);
170 switch (psp) {
171 case POWER_SUPPLY_PROP_ONLINE:
172 val->intval = sbs->charger_present;
173 break;
174 default:
175 return -EINVAL;
176 }
177 return 0;
178}
179
180static int acpi_battery_technology(struct acpi_battery *battery)
181{
182 if (!strcasecmp("NiCd", battery->device_chemistry))
183 return POWER_SUPPLY_TECHNOLOGY_NiCd;
184 if (!strcasecmp("NiMH", battery->device_chemistry))
185 return POWER_SUPPLY_TECHNOLOGY_NiMH;
186 if (!strcasecmp("LION", battery->device_chemistry))
187 return POWER_SUPPLY_TECHNOLOGY_LION;
188 if (!strcasecmp("LiP", battery->device_chemistry))
189 return POWER_SUPPLY_TECHNOLOGY_LIPO;
190 return POWER_SUPPLY_TECHNOLOGY_UNKNOWN;
191}
192
193static int acpi_sbs_battery_get_property(struct power_supply *psy,
194 enum power_supply_property psp,
195 union power_supply_propval *val)
196{
197 struct acpi_battery *battery = to_acpi_battery(psy);
198
199 if ((!battery->present) && psp != POWER_SUPPLY_PROP_PRESENT)
200 return -ENODEV;
201 switch (psp) {
202 case POWER_SUPPLY_PROP_STATUS:
203 if (battery->current_now < 0)
204 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
205 else if (battery->current_now > 0)
206 val->intval = POWER_SUPPLY_STATUS_CHARGING;
207 else
208 val->intval = POWER_SUPPLY_STATUS_FULL;
209 break;
210 case POWER_SUPPLY_PROP_PRESENT:
211 val->intval = battery->present;
212 break;
213 case POWER_SUPPLY_PROP_TECHNOLOGY:
214 val->intval = acpi_battery_technology(battery);
215 break;
216 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
217 val->intval = battery->design_voltage *
218 acpi_battery_vscale(battery) * 1000;
219 break;
220 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
221 val->intval = battery->voltage_now *
222 acpi_battery_vscale(battery) * 1000;
223 break;
224 case POWER_SUPPLY_PROP_CURRENT_NOW:
225 val->intval = abs(battery->current_now) *
226 acpi_battery_ipscale(battery) * 1000;
227 break;
228 case POWER_SUPPLY_PROP_CURRENT_AVG:
229 val->intval = abs(battery->current_avg) *
230 acpi_battery_ipscale(battery) * 1000;
231 break;
232 case POWER_SUPPLY_PROP_CAPACITY:
233 val->intval = battery->state_of_charge;
234 break;
235 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
236 case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
237 val->intval = battery->design_capacity *
238 acpi_battery_scale(battery) * 1000;
239 break;
240 case POWER_SUPPLY_PROP_CHARGE_FULL:
241 case POWER_SUPPLY_PROP_ENERGY_FULL:
242 val->intval = battery->full_charge_capacity *
243 acpi_battery_scale(battery) * 1000;
244 break;
245 case POWER_SUPPLY_PROP_CHARGE_NOW:
246 case POWER_SUPPLY_PROP_ENERGY_NOW:
247 val->intval = battery->capacity_now *
248 acpi_battery_scale(battery) * 1000;
249 break;
250 case POWER_SUPPLY_PROP_TEMP:
251 val->intval = battery->temp_now - 2730; // dK -> dC
252 break;
253 case POWER_SUPPLY_PROP_MODEL_NAME:
254 val->strval = battery->device_name;
255 break;
256 case POWER_SUPPLY_PROP_MANUFACTURER:
257 val->strval = battery->manufacturer_name;
258 break;
259 default:
260 return -EINVAL;
261 }
262 return 0;
263}
264
265static enum power_supply_property sbs_ac_props[] = {
266 POWER_SUPPLY_PROP_ONLINE,
267};
268
269static enum power_supply_property sbs_charge_battery_props[] = {
270 POWER_SUPPLY_PROP_STATUS,
271 POWER_SUPPLY_PROP_PRESENT,
272 POWER_SUPPLY_PROP_TECHNOLOGY,
273 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
274 POWER_SUPPLY_PROP_VOLTAGE_NOW,
275 POWER_SUPPLY_PROP_CURRENT_NOW,
276 POWER_SUPPLY_PROP_CURRENT_AVG,
277 POWER_SUPPLY_PROP_CAPACITY,
278 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
279 POWER_SUPPLY_PROP_CHARGE_FULL,
280 POWER_SUPPLY_PROP_CHARGE_NOW,
281 POWER_SUPPLY_PROP_TEMP,
282 POWER_SUPPLY_PROP_MODEL_NAME,
283 POWER_SUPPLY_PROP_MANUFACTURER,
284};
285
286static enum power_supply_property sbs_energy_battery_props[] = {
287 POWER_SUPPLY_PROP_STATUS,
288 POWER_SUPPLY_PROP_PRESENT,
289 POWER_SUPPLY_PROP_TECHNOLOGY,
290 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
291 POWER_SUPPLY_PROP_VOLTAGE_NOW,
292 POWER_SUPPLY_PROP_CURRENT_NOW,
293 POWER_SUPPLY_PROP_CURRENT_AVG,
294 POWER_SUPPLY_PROP_CAPACITY,
295 POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
296 POWER_SUPPLY_PROP_ENERGY_FULL,
297 POWER_SUPPLY_PROP_ENERGY_NOW,
298 POWER_SUPPLY_PROP_TEMP,
299 POWER_SUPPLY_PROP_MODEL_NAME,
300 POWER_SUPPLY_PROP_MANUFACTURER,
301};
302
Rich Townsend3f86b832006-07-01 11:36:54 -0400303/* --------------------------------------------------------------------------
304 Smart Battery System Management
305 -------------------------------------------------------------------------- */
306
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400307struct acpi_battery_reader {
308 u8 command; /* command for battery */
309 u8 mode; /* word or block? */
310 size_t offset; /* offset inside struct acpi_sbs_battery */
311};
Vladimir Lebedev72206232007-03-19 17:45:50 +0300312
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400313static struct acpi_battery_reader info_readers[] = {
314 {0x01, SMBUS_READ_WORD, offsetof(struct acpi_battery, alarm_capacity)},
315 {0x03, SMBUS_READ_WORD, offsetof(struct acpi_battery, mode)},
316 {0x10, SMBUS_READ_WORD, offsetof(struct acpi_battery, full_charge_capacity)},
317 {0x17, SMBUS_READ_WORD, offsetof(struct acpi_battery, cycle_count)},
318 {0x18, SMBUS_READ_WORD, offsetof(struct acpi_battery, design_capacity)},
319 {0x19, SMBUS_READ_WORD, offsetof(struct acpi_battery, design_voltage)},
320 {0x1a, SMBUS_READ_WORD, offsetof(struct acpi_battery, spec)},
321 {0x1c, SMBUS_READ_WORD, offsetof(struct acpi_battery, serial_number)},
322 {0x20, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, manufacturer_name)},
323 {0x21, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, device_name)},
324 {0x22, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, device_chemistry)},
325};
Rich Townsend3f86b832006-07-01 11:36:54 -0400326
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400327static struct acpi_battery_reader state_readers[] = {
328 {0x08, SMBUS_READ_WORD, offsetof(struct acpi_battery, temp_now)},
329 {0x09, SMBUS_READ_WORD, offsetof(struct acpi_battery, voltage_now)},
330 {0x0a, SMBUS_READ_WORD, offsetof(struct acpi_battery, current_now)},
331 {0x0b, SMBUS_READ_WORD, offsetof(struct acpi_battery, current_avg)},
332 {0x0f, SMBUS_READ_WORD, offsetof(struct acpi_battery, capacity_now)},
333 {0x0e, SMBUS_READ_WORD, offsetof(struct acpi_battery, state_of_charge)},
334 {0x16, SMBUS_READ_WORD, offsetof(struct acpi_battery, state)},
335};
Rich Townsend3f86b832006-07-01 11:36:54 -0400336
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400337static int acpi_manager_get_info(struct acpi_sbs *sbs)
Rich Townsend3f86b832006-07-01 11:36:54 -0400338{
Rich Townsend3f86b832006-07-01 11:36:54 -0400339 int result = 0;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400340 u16 battery_system_info;
Rich Townsend3f86b832006-07-01 11:36:54 -0400341
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400342 result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER,
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400343 0x04, (u8 *)&battery_system_info);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400344 if (!result)
345 sbs->batteries_supported = battery_system_info & 0x000f;
Len Brown635227e2006-07-01 16:48:23 -0400346 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400347}
348
349static int acpi_battery_get_info(struct acpi_battery *battery)
350{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400351 int i, result = 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400352
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400353 for (i = 0; i < ARRAY_SIZE(info_readers); ++i) {
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400354 result = acpi_smbus_read(battery->sbs->hc,
355 info_readers[i].mode,
356 ACPI_SBS_BATTERY,
357 info_readers[i].command,
358 (u8 *) battery +
359 info_readers[i].offset);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400360 if (result)
361 break;
Rich Townsend3f86b832006-07-01 11:36:54 -0400362 }
Len Brown635227e2006-07-01 16:48:23 -0400363 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400364}
365
Rich Townsend3f86b832006-07-01 11:36:54 -0400366static int acpi_battery_get_state(struct acpi_battery *battery)
367{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400368 int i, result = 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400369
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400370 if (battery->update_time &&
371 time_before(jiffies, battery->update_time +
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400372 msecs_to_jiffies(cache_time)))
373 return 0;
374 for (i = 0; i < ARRAY_SIZE(state_readers); ++i) {
375 result = acpi_smbus_read(battery->sbs->hc,
376 state_readers[i].mode,
377 ACPI_SBS_BATTERY,
378 state_readers[i].command,
379 (u8 *)battery +
380 state_readers[i].offset);
381 if (result)
382 goto end;
Rich Townsend3f86b832006-07-01 11:36:54 -0400383 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400384 end:
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400385 battery->update_time = jiffies;
Len Brown635227e2006-07-01 16:48:23 -0400386 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400387}
388
389static int acpi_battery_get_alarm(struct acpi_battery *battery)
390{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400391 return acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD,
392 ACPI_SBS_BATTERY, 0x01,
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400393 (u8 *)&battery->alarm_capacity);
Rich Townsend3f86b832006-07-01 11:36:54 -0400394}
395
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400396static int acpi_battery_set_alarm(struct acpi_battery *battery)
Rich Townsend3f86b832006-07-01 11:36:54 -0400397{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400398 struct acpi_sbs *sbs = battery->sbs;
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400399 u16 value, sel = 1 << (battery->id + 12);
400
401 int ret;
402
Rich Townsend3f86b832006-07-01 11:36:54 -0400403
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400404 if (sbs->manager_present) {
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400405 ret = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER,
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400406 0x01, (u8 *)&value);
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400407 if (ret)
408 goto end;
409 if ((value & 0xf000) != sel) {
410 value &= 0x0fff;
411 value |= sel;
412 ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD,
413 ACPI_SBS_MANAGER,
414 0x01, (u8 *)&value, 2);
415 if (ret)
416 goto end;
417 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400418 }
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400419 ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, ACPI_SBS_BATTERY,
420 0x01, (u8 *)&battery->alarm_capacity, 2);
421 end:
422 return ret;
Rich Townsend3f86b832006-07-01 11:36:54 -0400423}
424
425static int acpi_ac_get_present(struct acpi_sbs *sbs)
426{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400427 int result;
428 u16 status;
Rich Townsend3f86b832006-07-01 11:36:54 -0400429
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400430 result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_CHARGER,
431 0x13, (u8 *) & status);
432 if (!result)
433 sbs->charger_present = (status >> 15) & 0x1;
Len Brown635227e2006-07-01 16:48:23 -0400434 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400435}
436
Alexey Starikovskiy8bd95532007-09-26 19:44:00 +0400437static ssize_t acpi_battery_alarm_show(struct device *dev,
438 struct device_attribute *attr,
439 char *buf)
440{
441 struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev));
442 acpi_battery_get_alarm(battery);
443 return sprintf(buf, "%d\n", battery->alarm_capacity *
444 acpi_battery_scale(battery) * 1000);
445}
446
447static ssize_t acpi_battery_alarm_store(struct device *dev,
448 struct device_attribute *attr,
449 const char *buf, size_t count)
450{
451 unsigned long x;
452 struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev));
453 if (sscanf(buf, "%ld\n", &x) == 1)
454 battery->alarm_capacity = x /
455 (1000 * acpi_battery_scale(battery));
456 if (battery->present)
457 acpi_battery_set_alarm(battery);
458 return count;
459}
460
461static struct device_attribute alarm_attr = {
462 .attr = {.name = "alarm", .mode = 0644, .owner = THIS_MODULE},
463 .show = acpi_battery_alarm_show,
464 .store = acpi_battery_alarm_store,
465};
466
Rich Townsend3f86b832006-07-01 11:36:54 -0400467/* --------------------------------------------------------------------------
468 FS Interface (/proc/acpi)
469 -------------------------------------------------------------------------- */
470
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400471#ifdef CONFIG_ACPI_PROCFS
Rich Townsend3f86b832006-07-01 11:36:54 -0400472/* Generic Routines */
Rich Townsend3f86b832006-07-01 11:36:54 -0400473static int
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400474acpi_sbs_add_fs(struct proc_dir_entry **dir,
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400475 struct proc_dir_entry *parent_dir,
476 char *dir_name,
477 struct file_operations *info_fops,
478 struct file_operations *state_fops,
479 struct file_operations *alarm_fops, void *data)
Rich Townsend3f86b832006-07-01 11:36:54 -0400480{
481 struct proc_dir_entry *entry = NULL;
482
Rich Townsend3f86b832006-07-01 11:36:54 -0400483 if (!*dir) {
484 *dir = proc_mkdir(dir_name, parent_dir);
485 if (!*dir) {
Len Brown635227e2006-07-01 16:48:23 -0400486 return -ENODEV;
Rich Townsend3f86b832006-07-01 11:36:54 -0400487 }
488 (*dir)->owner = THIS_MODULE;
489 }
490
491 /* 'info' [R] */
492 if (info_fops) {
493 entry = create_proc_entry(ACPI_SBS_FILE_INFO, S_IRUGO, *dir);
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400494 if (entry) {
Rich Townsend3f86b832006-07-01 11:36:54 -0400495 entry->proc_fops = info_fops;
496 entry->data = data;
497 entry->owner = THIS_MODULE;
498 }
499 }
500
501 /* 'state' [R] */
502 if (state_fops) {
503 entry = create_proc_entry(ACPI_SBS_FILE_STATE, S_IRUGO, *dir);
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400504 if (entry) {
Rich Townsend3f86b832006-07-01 11:36:54 -0400505 entry->proc_fops = state_fops;
506 entry->data = data;
507 entry->owner = THIS_MODULE;
508 }
509 }
510
511 /* 'alarm' [R/W] */
512 if (alarm_fops) {
513 entry = create_proc_entry(ACPI_SBS_FILE_ALARM, S_IRUGO, *dir);
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400514 if (entry) {
Rich Townsend3f86b832006-07-01 11:36:54 -0400515 entry->proc_fops = alarm_fops;
516 entry->data = data;
517 entry->owner = THIS_MODULE;
518 }
519 }
Len Brown635227e2006-07-01 16:48:23 -0400520 return 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400521}
522
523static void
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400524acpi_sbs_remove_fs(struct proc_dir_entry **dir,
Rich Townsend3f86b832006-07-01 11:36:54 -0400525 struct proc_dir_entry *parent_dir)
526{
Rich Townsend3f86b832006-07-01 11:36:54 -0400527 if (*dir) {
528 remove_proc_entry(ACPI_SBS_FILE_INFO, *dir);
529 remove_proc_entry(ACPI_SBS_FILE_STATE, *dir);
530 remove_proc_entry(ACPI_SBS_FILE_ALARM, *dir);
531 remove_proc_entry((*dir)->name, parent_dir);
532 *dir = NULL;
533 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400534}
535
536/* Smart Battery Interface */
Rich Townsend3f86b832006-07-01 11:36:54 -0400537static struct proc_dir_entry *acpi_battery_dir = NULL;
538
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400539static inline char *acpi_battery_units(struct acpi_battery *battery)
540{
541 return acpi_battery_mode(battery) ? " mWh" : " mAh";
542}
543
544
Rich Townsend3f86b832006-07-01 11:36:54 -0400545static int acpi_battery_read_info(struct seq_file *seq, void *offset)
546{
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200547 struct acpi_battery *battery = seq->private;
Vladimir Lebedev72206232007-03-19 17:45:50 +0300548 struct acpi_sbs *sbs = battery->sbs;
Rich Townsend3f86b832006-07-01 11:36:54 -0400549 int result = 0;
550
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400551 mutex_lock(&sbs->lock);
Rich Townsend3f86b832006-07-01 11:36:54 -0400552
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400553 seq_printf(seq, "present: %s\n",
554 (battery->present) ? "yes" : "no");
555 if (!battery->present)
Vladimir Lebedev72206232007-03-19 17:45:50 +0300556 goto end;
Rich Townsend3f86b832006-07-01 11:36:54 -0400557
Vladimir Lebedev72206232007-03-19 17:45:50 +0300558 seq_printf(seq, "design capacity: %i%s\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400559 battery->design_capacity * acpi_battery_scale(battery),
560 acpi_battery_units(battery));
Vladimir Lebedev72206232007-03-19 17:45:50 +0300561 seq_printf(seq, "last full capacity: %i%s\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400562 battery->full_charge_capacity * acpi_battery_scale(battery),
563 acpi_battery_units(battery));
Rich Townsend3f86b832006-07-01 11:36:54 -0400564 seq_printf(seq, "battery technology: rechargeable\n");
Rich Townsend3f86b832006-07-01 11:36:54 -0400565 seq_printf(seq, "design voltage: %i mV\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400566 battery->design_voltage * acpi_battery_vscale(battery));
Rich Townsend3f86b832006-07-01 11:36:54 -0400567 seq_printf(seq, "design capacity warning: unknown\n");
568 seq_printf(seq, "design capacity low: unknown\n");
569 seq_printf(seq, "capacity granularity 1: unknown\n");
570 seq_printf(seq, "capacity granularity 2: unknown\n");
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400571 seq_printf(seq, "model number: %s\n", battery->device_name);
Rich Townsend3f86b832006-07-01 11:36:54 -0400572 seq_printf(seq, "serial number: %i\n",
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400573 battery->serial_number);
Rich Townsend3f86b832006-07-01 11:36:54 -0400574 seq_printf(seq, "battery type: %s\n",
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400575 battery->device_chemistry);
Rich Townsend3f86b832006-07-01 11:36:54 -0400576 seq_printf(seq, "OEM info: %s\n",
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400577 battery->manufacturer_name);
Rich Townsend3f86b832006-07-01 11:36:54 -0400578 end:
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400579 mutex_unlock(&sbs->lock);
Len Brown635227e2006-07-01 16:48:23 -0400580 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400581}
582
583static int acpi_battery_info_open_fs(struct inode *inode, struct file *file)
584{
585 return single_open(file, acpi_battery_read_info, PDE(inode)->data);
586}
587
588static int acpi_battery_read_state(struct seq_file *seq, void *offset)
589{
Vladimir Lebedev72206232007-03-19 17:45:50 +0300590 struct acpi_battery *battery = seq->private;
591 struct acpi_sbs *sbs = battery->sbs;
Rich Townsend3f86b832006-07-01 11:36:54 -0400592 int result = 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400593
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400594 mutex_lock(&sbs->lock);
595 seq_printf(seq, "present: %s\n",
596 (battery->present) ? "yes" : "no");
597 if (!battery->present)
Vladimir Lebedev72206232007-03-19 17:45:50 +0300598 goto end;
Rich Townsend3f86b832006-07-01 11:36:54 -0400599
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400600 acpi_battery_get_state(battery);
601 seq_printf(seq, "capacity state: %s\n",
602 (battery->state & 0x0010) ? "critical" : "ok");
603 seq_printf(seq, "charging state: %s\n",
604 (battery->current_now < 0) ? "discharging" :
605 ((battery->current_now > 0) ? "charging" : "charged"));
606 seq_printf(seq, "present rate: %d mA\n",
607 abs(battery->current_now) * acpi_battery_ipscale(battery));
Vladimir Lebedev72206232007-03-19 17:45:50 +0300608 seq_printf(seq, "remaining capacity: %i%s\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400609 battery->capacity_now * acpi_battery_scale(battery),
610 acpi_battery_units(battery));
Rich Townsend3f86b832006-07-01 11:36:54 -0400611 seq_printf(seq, "present voltage: %i mV\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400612 battery->voltage_now * acpi_battery_vscale(battery));
Rich Townsend3f86b832006-07-01 11:36:54 -0400613
614 end:
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400615 mutex_unlock(&sbs->lock);
Len Brown635227e2006-07-01 16:48:23 -0400616 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400617}
618
619static int acpi_battery_state_open_fs(struct inode *inode, struct file *file)
620{
621 return single_open(file, acpi_battery_read_state, PDE(inode)->data);
622}
623
624static int acpi_battery_read_alarm(struct seq_file *seq, void *offset)
625{
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200626 struct acpi_battery *battery = seq->private;
Vladimir Lebedev72206232007-03-19 17:45:50 +0300627 struct acpi_sbs *sbs = battery->sbs;
Rich Townsend3f86b832006-07-01 11:36:54 -0400628 int result = 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400629
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400630 mutex_lock(&sbs->lock);
Rich Townsend3f86b832006-07-01 11:36:54 -0400631
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400632 if (!battery->present) {
Rich Townsend3f86b832006-07-01 11:36:54 -0400633 seq_printf(seq, "present: no\n");
634 goto end;
635 }
636
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400637 acpi_battery_get_alarm(battery);
Rich Townsend3f86b832006-07-01 11:36:54 -0400638 seq_printf(seq, "alarm: ");
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400639 if (battery->alarm_capacity)
Vladimir Lebedev72206232007-03-19 17:45:50 +0300640 seq_printf(seq, "%i%s\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400641 battery->alarm_capacity *
642 acpi_battery_scale(battery),
643 acpi_battery_units(battery));
644 else
Rich Townsend3f86b832006-07-01 11:36:54 -0400645 seq_printf(seq, "disabled\n");
Rich Townsend3f86b832006-07-01 11:36:54 -0400646 end:
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400647 mutex_unlock(&sbs->lock);
Len Brown635227e2006-07-01 16:48:23 -0400648 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400649}
650
651static ssize_t
652acpi_battery_write_alarm(struct file *file, const char __user * buffer,
653 size_t count, loff_t * ppos)
654{
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200655 struct seq_file *seq = file->private_data;
656 struct acpi_battery *battery = seq->private;
Vladimir Lebedev72206232007-03-19 17:45:50 +0300657 struct acpi_sbs *sbs = battery->sbs;
Rich Townsend3f86b832006-07-01 11:36:54 -0400658 char alarm_string[12] = { '\0' };
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400659 int result = 0;
660 mutex_lock(&sbs->lock);
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400661 if (!battery->present) {
Rich Townsend3f86b832006-07-01 11:36:54 -0400662 result = -ENODEV;
663 goto end;
664 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400665 if (count > sizeof(alarm_string) - 1) {
666 result = -EINVAL;
667 goto end;
668 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400669 if (copy_from_user(alarm_string, buffer, count)) {
670 result = -EFAULT;
671 goto end;
672 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400673 alarm_string[count] = 0;
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400674 battery->alarm_capacity = simple_strtoul(alarm_string, NULL, 0) /
675 acpi_battery_scale(battery);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400676 acpi_battery_set_alarm(battery);
Rich Townsend3f86b832006-07-01 11:36:54 -0400677 end:
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400678 mutex_unlock(&sbs->lock);
679 if (result)
Len Brown635227e2006-07-01 16:48:23 -0400680 return result;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400681 return count;
Rich Townsend3f86b832006-07-01 11:36:54 -0400682}
683
684static int acpi_battery_alarm_open_fs(struct inode *inode, struct file *file)
685{
686 return single_open(file, acpi_battery_read_alarm, PDE(inode)->data);
687}
688
689static struct file_operations acpi_battery_info_fops = {
690 .open = acpi_battery_info_open_fs,
691 .read = seq_read,
692 .llseek = seq_lseek,
693 .release = single_release,
694 .owner = THIS_MODULE,
695};
696
697static struct file_operations acpi_battery_state_fops = {
698 .open = acpi_battery_state_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_alarm_fops = {
706 .open = acpi_battery_alarm_open_fs,
707 .read = seq_read,
708 .write = acpi_battery_write_alarm,
709 .llseek = seq_lseek,
710 .release = single_release,
711 .owner = THIS_MODULE,
712};
713
714/* Legacy AC Adapter Interface */
715
716static struct proc_dir_entry *acpi_ac_dir = NULL;
717
718static int acpi_ac_read_state(struct seq_file *seq, void *offset)
719{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400720
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200721 struct acpi_sbs *sbs = seq->private;
Rich Townsend3f86b832006-07-01 11:36:54 -0400722
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400723 mutex_lock(&sbs->lock);
Rich Townsend3f86b832006-07-01 11:36:54 -0400724
725 seq_printf(seq, "state: %s\n",
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400726 sbs->charger_present ? "on-line" : "off-line");
Rich Townsend3f86b832006-07-01 11:36:54 -0400727
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400728 mutex_unlock(&sbs->lock);
Len Brown635227e2006-07-01 16:48:23 -0400729 return 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400730}
731
732static int acpi_ac_state_open_fs(struct inode *inode, struct file *file)
733{
734 return single_open(file, acpi_ac_read_state, PDE(inode)->data);
735}
736
737static struct file_operations acpi_ac_state_fops = {
738 .open = acpi_ac_state_open_fs,
739 .read = seq_read,
740 .llseek = seq_lseek,
741 .release = single_release,
742 .owner = THIS_MODULE,
743};
744
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400745#endif
746
Rich Townsend3f86b832006-07-01 11:36:54 -0400747/* --------------------------------------------------------------------------
748 Driver Interface
749 -------------------------------------------------------------------------- */
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400750static int acpi_battery_read(struct acpi_battery *battery)
751{
752 int result = 0, saved_present = battery->present;
753 u16 state;
754
755 if (battery->sbs->manager_present) {
756 result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD,
757 ACPI_SBS_MANAGER, 0x01, (u8 *)&state);
758 if (!result)
759 battery->present = state & (1 << battery->id);
760 state &= 0x0fff;
761 state |= 1 << (battery->id + 12);
762 acpi_smbus_write(battery->sbs->hc, SMBUS_WRITE_WORD,
763 ACPI_SBS_MANAGER, 0x01, (u8 *)&state, 2);
764 } else if (battery->id == 0)
765 battery->present = 1;
766 if (result || !battery->present)
767 return result;
768
769 if (saved_present != battery->present) {
770 battery->update_time = 0;
771 result = acpi_battery_get_info(battery);
772 if (result)
773 return result;
774 }
775 result = acpi_battery_get_state(battery);
776 return result;
777}
778
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400779/* Smart Battery */
Rich Townsend3f86b832006-07-01 11:36:54 -0400780static int acpi_battery_add(struct acpi_sbs *sbs, int id)
781{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400782 struct acpi_battery *battery = &sbs->battery[id];
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400783 int result;
784
Rich Townsend3f86b832006-07-01 11:36:54 -0400785 battery->id = id;
786 battery->sbs = sbs;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400787 result = acpi_battery_read(battery);
788 if (result)
789 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400790
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400791 sprintf(battery->name, ACPI_BATTERY_DIR_NAME, id);
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400792#ifdef CONFIG_ACPI_PROCFS
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400793 acpi_sbs_add_fs(&battery->proc_entry, acpi_battery_dir,
794 battery->name, &acpi_battery_info_fops,
795 &acpi_battery_state_fops, &acpi_battery_alarm_fops,
796 battery);
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400797#endif
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400798 battery->bat.name = battery->name;
799 battery->bat.type = POWER_SUPPLY_TYPE_BATTERY;
800 if (!acpi_battery_mode(battery)) {
801 battery->bat.properties = sbs_charge_battery_props;
802 battery->bat.num_properties =
803 ARRAY_SIZE(sbs_charge_battery_props);
804 } else {
805 battery->bat.properties = sbs_energy_battery_props;
806 battery->bat.num_properties =
807 ARRAY_SIZE(sbs_energy_battery_props);
808 }
809 battery->bat.get_property = acpi_sbs_battery_get_property;
810 result = power_supply_register(&sbs->device->dev, &battery->bat);
Alexey Starikovskiy8bd95532007-09-26 19:44:00 +0400811 device_create_file(battery->bat.dev, &alarm_attr);
Vladimir Lebedev72206232007-03-19 17:45:50 +0300812 printk(KERN_INFO PREFIX "%s [%s]: Battery Slot [%s] (battery %s)\n",
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400813 ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device),
814 battery->name, sbs->battery->present ? "present" : "absent");
Len Brown635227e2006-07-01 16:48:23 -0400815 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400816}
817
818static void acpi_battery_remove(struct acpi_sbs *sbs, int id)
819{
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400820 if (sbs->battery[id].bat.dev)
Alexey Starikovskiy8bd95532007-09-26 19:44:00 +0400821 device_remove_file(sbs->battery[id].bat.dev, &alarm_attr);
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400822 power_supply_unregister(&sbs->battery[id].bat);
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400823#ifdef CONFIG_ACPI_PROCFS
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400824 if (sbs->battery[id].proc_entry) {
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400825 acpi_sbs_remove_fs(&(sbs->battery[id].proc_entry),
826 acpi_battery_dir);
Rich Townsend3f86b832006-07-01 11:36:54 -0400827 }
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400828#endif
Rich Townsend3f86b832006-07-01 11:36:54 -0400829}
830
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400831static int acpi_charger_add(struct acpi_sbs *sbs)
Rich Townsend3f86b832006-07-01 11:36:54 -0400832{
833 int result;
834
Rich Townsend3f86b832006-07-01 11:36:54 -0400835 result = acpi_ac_get_present(sbs);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400836 if (result)
Rich Townsend3f86b832006-07-01 11:36:54 -0400837 goto end;
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400838#ifdef CONFIG_ACPI_PROCFS
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400839 result = acpi_sbs_add_fs(&sbs->charger_entry, acpi_ac_dir,
840 ACPI_AC_DIR_NAME, NULL,
841 &acpi_ac_state_fops, NULL, sbs);
842 if (result)
Rich Townsend3f86b832006-07-01 11:36:54 -0400843 goto end;
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400844#endif
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400845 sbs->charger.name = "sbs-charger";
846 sbs->charger.type = POWER_SUPPLY_TYPE_MAINS;
847 sbs->charger.properties = sbs_ac_props;
848 sbs->charger.num_properties = ARRAY_SIZE(sbs_ac_props);
849 sbs->charger.get_property = sbs_get_ac_property;
850 power_supply_register(&sbs->device->dev, &sbs->charger);
Vladimir Lebedev72206232007-03-19 17:45:50 +0300851 printk(KERN_INFO PREFIX "%s [%s]: AC Adapter [%s] (%s)\n",
852 ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device),
Alexey Starikovskiy89862e32007-09-26 19:43:35 +0400853 ACPI_AC_DIR_NAME, sbs->charger_present ? "on-line" : "off-line");
Rich Townsend3f86b832006-07-01 11:36:54 -0400854 end:
Len Brown635227e2006-07-01 16:48:23 -0400855 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400856}
857
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400858static void acpi_charger_remove(struct acpi_sbs *sbs)
Rich Townsend3f86b832006-07-01 11:36:54 -0400859{
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400860 if (sbs->charger.dev)
861 power_supply_unregister(&sbs->charger);
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400862#ifdef CONFIG_ACPI_PROCFS
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400863 if (sbs->charger_entry)
864 acpi_sbs_remove_fs(&sbs->charger_entry, acpi_ac_dir);
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400865#endif
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400866}
867
868void acpi_sbs_callback(void *context)
869{
870 int id;
871 struct acpi_sbs *sbs = context;
872 struct acpi_battery *bat;
873 u8 saved_charger_state = sbs->charger_present;
874 u8 saved_battery_state;
875 acpi_ac_get_present(sbs);
876 if (sbs->charger_present != saved_charger_state) {
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400877#ifdef CONFIG_ACPI_PROC_EVENT
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400878 acpi_bus_generate_proc_event4(ACPI_AC_CLASS, ACPI_AC_DIR_NAME,
879 ACPI_SBS_NOTIFY_STATUS,
880 sbs->charger_present);
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400881#endif
882 kobject_uevent(&sbs->charger.dev->kobj, KOBJ_CHANGE);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400883 }
884 if (sbs->manager_present) {
885 for (id = 0; id < MAX_SBS_BAT; ++id) {
886 if (!(sbs->batteries_supported & (1 << id)))
887 continue;
888 bat = &sbs->battery[id];
889 saved_battery_state = bat->present;
890 acpi_battery_read(bat);
891 if (saved_battery_state == bat->present)
892 continue;
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400893#ifdef CONFIG_ACPI_PROC_EVENT
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400894 acpi_bus_generate_proc_event4(ACPI_BATTERY_CLASS,
895 bat->name,
896 ACPI_SBS_NOTIFY_STATUS,
897 bat->present);
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400898#endif
899 kobject_uevent(&bat->bat.dev->kobj, KOBJ_CHANGE);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400900 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400901 }
902}
903
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400904static int acpi_sbs_remove(struct acpi_device *device, int type);
Rich Townsend3f86b832006-07-01 11:36:54 -0400905
906static int acpi_sbs_add(struct acpi_device *device)
907{
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400908 struct acpi_sbs *sbs;
909 int result = 0;
Vladimir Lebedev6d157022007-03-19 17:45:50 +0300910 int id;
Rich Townsend3f86b832006-07-01 11:36:54 -0400911
Burman Yan36bcbec2006-12-19 12:56:11 -0800912 sbs = kzalloc(sizeof(struct acpi_sbs), GFP_KERNEL);
Rich Townsend3f86b832006-07-01 11:36:54 -0400913 if (!sbs) {
Vladimir Lebedev72206232007-03-19 17:45:50 +0300914 result = -ENOMEM;
915 goto end;
Rich Townsend3f86b832006-07-01 11:36:54 -0400916 }
Rich Townsend3f86b832006-07-01 11:36:54 -0400917
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400918 mutex_init(&sbs->lock);
Vladimir Lebedev72206232007-03-19 17:45:50 +0300919
Alexey Starikovskiy91087df2007-09-26 19:43:28 +0400920 sbs->hc = acpi_driver_data(device->parent);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400921 sbs->device = device;
Rich Townsend3f86b832006-07-01 11:36:54 -0400922 strcpy(acpi_device_name(device), ACPI_SBS_DEVICE_NAME);
923 strcpy(acpi_device_class(device), ACPI_SBS_CLASS);
924 acpi_driver_data(device) = sbs;
925
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400926 result = acpi_charger_add(sbs);
Vladimir Lebedev72206232007-03-19 17:45:50 +0300927 if (result)
928 goto end;
Rich Townsend3f86b832006-07-01 11:36:54 -0400929
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400930 result = acpi_manager_get_info(sbs);
931 if (!result) {
932 sbs->manager_present = 1;
933 for (id = 0; id < MAX_SBS_BAT; ++id)
934 if ((sbs->batteries_supported & (1 << id)))
935 acpi_battery_add(sbs, id);
936 } else
937 acpi_battery_add(sbs, 0);
938 acpi_smbus_register_callback(sbs->hc, acpi_sbs_callback, sbs);
Rich Townsend3f86b832006-07-01 11:36:54 -0400939 end:
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400940 if (result)
941 acpi_sbs_remove(device, 0);
Len Brown635227e2006-07-01 16:48:23 -0400942 return result;
Rich Townsend3f86b832006-07-01 11:36:54 -0400943}
944
Vladimir Lebedev72206232007-03-19 17:45:50 +0300945static int acpi_sbs_remove(struct acpi_device *device, int type)
Rich Townsend3f86b832006-07-01 11:36:54 -0400946{
Len Browncece9012006-12-16 01:04:27 -0500947 struct acpi_sbs *sbs;
Rich Townsend3f86b832006-07-01 11:36:54 -0400948 int id;
949
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400950 if (!device)
Lebedev, Vladimir P963497c2006-09-05 19:49:13 +0400951 return -EINVAL;
Vladimir Lebedev72206232007-03-19 17:45:50 +0300952 sbs = acpi_driver_data(device);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400953 if (!sbs)
Len Brown635227e2006-07-01 16:48:23 -0400954 return -EINVAL;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400955 mutex_lock(&sbs->lock);
956 acpi_smbus_unregister_callback(sbs->hc);
957 for (id = 0; id < MAX_SBS_BAT; ++id)
Rich Townsend3f86b832006-07-01 11:36:54 -0400958 acpi_battery_remove(sbs, id);
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400959 acpi_charger_remove(sbs);
960 mutex_unlock(&sbs->lock);
961 mutex_destroy(&sbs->lock);
Rich Townsend3f86b832006-07-01 11:36:54 -0400962 kfree(sbs);
Len Brown635227e2006-07-01 16:48:23 -0400963 return 0;
Rich Townsend3f86b832006-07-01 11:36:54 -0400964}
965
Vladimir Lebedev72206232007-03-19 17:45:50 +0300966static void acpi_sbs_rmdirs(void)
967{
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400968#ifdef CONFIG_ACPI_PROCFS
Vladimir Lebedev72206232007-03-19 17:45:50 +0300969 if (acpi_ac_dir) {
970 acpi_unlock_ac_dir(acpi_ac_dir);
971 acpi_ac_dir = NULL;
972 }
973 if (acpi_battery_dir) {
974 acpi_unlock_battery_dir(acpi_battery_dir);
975 acpi_battery_dir = NULL;
976 }
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +0400977#endif
Vladimir Lebedev72206232007-03-19 17:45:50 +0300978}
979
980static int acpi_sbs_resume(struct acpi_device *device)
981{
982 struct acpi_sbs *sbs;
Vladimir Lebedev72206232007-03-19 17:45:50 +0300983 if (!device)
984 return -EINVAL;
Vladimir Lebedev72206232007-03-19 17:45:50 +0300985 sbs = device->driver_data;
Alexey Starikovskiydb1c2912007-09-26 19:43:41 +0400986 acpi_sbs_callback(sbs);
Vladimir Lebedev72206232007-03-19 17:45:50 +0300987 return 0;
988}
989
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400990static struct acpi_driver acpi_sbs_driver = {
991 .name = "sbs",
992 .class = ACPI_SBS_CLASS,
993 .ids = sbs_device_ids,
994 .ops = {
995 .add = acpi_sbs_add,
996 .remove = acpi_sbs_remove,
997 .resume = acpi_sbs_resume,
998 },
999};
1000
Rich Townsend3f86b832006-07-01 11:36:54 -04001001static int __init acpi_sbs_init(void)
1002{
1003 int result = 0;
1004
Len Brownb20d2ae2006-08-15 23:21:37 -04001005 if (acpi_disabled)
1006 return -ENODEV;
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +04001007#ifdef CONFIG_ACPI_PROCFS
Rich Townsend3f86b832006-07-01 11:36:54 -04001008 acpi_ac_dir = acpi_lock_ac_dir();
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +04001009 if (!acpi_ac_dir)
Len Brown635227e2006-07-01 16:48:23 -04001010 return -ENODEV;
Rich Townsend3f86b832006-07-01 11:36:54 -04001011 acpi_battery_dir = acpi_lock_battery_dir();
1012 if (!acpi_battery_dir) {
Vladimir Lebedev72206232007-03-19 17:45:50 +03001013 acpi_sbs_rmdirs();
Len Brown635227e2006-07-01 16:48:23 -04001014 return -ENODEV;
Rich Townsend3f86b832006-07-01 11:36:54 -04001015 }
Alexey Starikovskiy66e4b722007-09-26 19:43:54 +04001016#endif
Rich Townsend3f86b832006-07-01 11:36:54 -04001017 result = acpi_bus_register_driver(&acpi_sbs_driver);
1018 if (result < 0) {
Vladimir Lebedev72206232007-03-19 17:45:50 +03001019 acpi_sbs_rmdirs();
Len Brown635227e2006-07-01 16:48:23 -04001020 return -ENODEV;
Rich Townsend3f86b832006-07-01 11:36:54 -04001021 }
Len Brown635227e2006-07-01 16:48:23 -04001022 return 0;
Rich Townsend3f86b832006-07-01 11:36:54 -04001023}
1024
1025static void __exit acpi_sbs_exit(void)
1026{
Rich Townsend3f86b832006-07-01 11:36:54 -04001027 acpi_bus_unregister_driver(&acpi_sbs_driver);
Vladimir Lebedev72206232007-03-19 17:45:50 +03001028 acpi_sbs_rmdirs();
Len Brown635227e2006-07-01 16:48:23 -04001029 return;
Rich Townsend3f86b832006-07-01 11:36:54 -04001030}
1031
1032module_init(acpi_sbs_init);
1033module_exit(acpi_sbs_exit);