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3f86b832 | 1 | /* |
db1c291a | 2 | * sbs.c - ACPI Smart Battery System Driver ($Revision: 2.0 $) |
3f86b832 | 3 | * |
db1c291a AS |
4 | * Copyright (c) 2007 Alexey Starikovskiy <astarikovskiy@suse.de> |
5 | * Copyright (c) 2005-2007 Vladimir Lebedev <vladimir.p.lebedev@intel.com> | |
3f86b832 RT |
6 | * Copyright (c) 2005 Rich Townsend <rhdt@bartol.udel.edu> |
7 | * | |
8 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or (at | |
13 | * your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License along | |
21 | * with this program; if not, write to the Free Software Foundation, Inc., | |
22 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
23 | * | |
24 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
25 | */ | |
26 | ||
27 | #include <linux/init.h> | |
28 | #include <linux/module.h> | |
29 | #include <linux/moduleparam.h> | |
30 | #include <linux/kernel.h> | |
94f6c086 | 31 | |
fdcedbba | 32 | #ifdef CONFIG_ACPI_PROCFS_POWER |
3f86b832 RT |
33 | #include <linux/proc_fs.h> |
34 | #include <linux/seq_file.h> | |
35 | #include <asm/uaccess.h> | |
66e4b72b | 36 | #endif |
94f6c086 | 37 | |
3f86b832 | 38 | #include <linux/acpi.h> |
6d15702c | 39 | #include <linux/timer.h> |
72206233 | 40 | #include <linux/jiffies.h> |
3f86b832 RT |
41 | #include <linux/delay.h> |
42 | ||
97749cd9 | 43 | #ifdef CONFIG_ACPI_SYSFS_POWER |
94f6c086 | 44 | #include <linux/power_supply.h> |
97749cd9 | 45 | #endif |
94f6c086 | 46 | |
91087dfa AS |
47 | #include "sbshc.h" |
48 | ||
3f86b832 RT |
49 | #define ACPI_SBS_CLASS "sbs" |
50 | #define ACPI_AC_CLASS "ac_adapter" | |
51 | #define ACPI_BATTERY_CLASS "battery" | |
3f86b832 RT |
52 | #define ACPI_SBS_DEVICE_NAME "Smart Battery System" |
53 | #define ACPI_SBS_FILE_INFO "info" | |
54 | #define ACPI_SBS_FILE_STATE "state" | |
55 | #define ACPI_SBS_FILE_ALARM "alarm" | |
56 | #define ACPI_BATTERY_DIR_NAME "BAT%i" | |
57 | #define ACPI_AC_DIR_NAME "AC0" | |
3f86b832 | 58 | |
db1c291a AS |
59 | #define ACPI_SBS_NOTIFY_STATUS 0x80 |
60 | #define ACPI_SBS_NOTIFY_INFO 0x81 | |
3f86b832 | 61 | |
db1c291a | 62 | MODULE_AUTHOR("Alexey Starikovskiy <astarikovskiy@suse.de>"); |
3f86b832 RT |
63 | MODULE_DESCRIPTION("Smart Battery System ACPI interface driver"); |
64 | MODULE_LICENSE("GPL"); | |
65 | ||
db1c291a AS |
66 | static unsigned int cache_time = 1000; |
67 | module_param(cache_time, uint, 0644); | |
68 | MODULE_PARM_DESC(cache_time, "cache time in milliseconds"); | |
6d15702c VL |
69 | |
70 | extern struct proc_dir_entry *acpi_lock_ac_dir(void); | |
71 | extern struct proc_dir_entry *acpi_lock_battery_dir(void); | |
72 | extern void acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir); | |
73 | extern void acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir); | |
74 | ||
db1c291a | 75 | #define MAX_SBS_BAT 4 |
6d15702c VL |
76 | #define ACPI_SBS_BLOCK_MAX 32 |
77 | ||
1ba90e3a | 78 | static const struct acpi_device_id sbs_device_ids[] = { |
91087dfa | 79 | {"ACPI0002", 0}, |
1ba90e3a TR |
80 | {"", 0}, |
81 | }; | |
82 | MODULE_DEVICE_TABLE(acpi, sbs_device_ids); | |
83 | ||
3f86b832 | 84 | struct acpi_battery { |
97749cd9 | 85 | #ifdef CONFIG_ACPI_SYSFS_POWER |
94f6c086 | 86 | struct power_supply bat; |
97749cd9 | 87 | #endif |
3f86b832 | 88 | struct acpi_sbs *sbs; |
fdcedbba | 89 | #ifdef CONFIG_ACPI_PROCFS_POWER |
89862e3b | 90 | struct proc_dir_entry *proc_entry; |
66e4b72b | 91 | #endif |
db1c291a AS |
92 | unsigned long update_time; |
93 | char name[8]; | |
89862e3b AS |
94 | char manufacturer_name[ACPI_SBS_BLOCK_MAX]; |
95 | char device_name[ACPI_SBS_BLOCK_MAX]; | |
96 | char device_chemistry[ACPI_SBS_BLOCK_MAX]; | |
94f6c086 | 97 | u16 alarm_capacity; |
89862e3b AS |
98 | u16 full_charge_capacity; |
99 | u16 design_capacity; | |
100 | u16 design_voltage; | |
101 | u16 serial_number; | |
db1c291a AS |
102 | u16 cycle_count; |
103 | u16 temp_now; | |
89862e3b AS |
104 | u16 voltage_now; |
105 | s16 current_now; | |
db1c291a | 106 | s16 current_avg; |
89862e3b | 107 | u16 capacity_now; |
db1c291a | 108 | u16 state_of_charge; |
89862e3b | 109 | u16 state; |
89862e3b | 110 | u16 mode; |
db1c291a | 111 | u16 spec; |
89862e3b | 112 | u8 id; |
89862e3b | 113 | u8 present:1; |
037cbc63 | 114 | u8 have_sysfs_alarm:1; |
3f86b832 RT |
115 | }; |
116 | ||
94f6c086 AS |
117 | #define to_acpi_battery(x) container_of(x, struct acpi_battery, bat); |
118 | ||
3f86b832 | 119 | struct acpi_sbs { |
97749cd9 | 120 | #ifdef CONFIG_ACPI_SYSFS_POWER |
94f6c086 | 121 | struct power_supply charger; |
97749cd9 | 122 | #endif |
3f86b832 | 123 | struct acpi_device *device; |
91087dfa | 124 | struct acpi_smb_hc *hc; |
db1c291a | 125 | struct mutex lock; |
fdcedbba | 126 | #ifdef CONFIG_ACPI_PROCFS_POWER |
db1c291a | 127 | struct proc_dir_entry *charger_entry; |
66e4b72b | 128 | #endif |
3f86b832 | 129 | struct acpi_battery battery[MAX_SBS_BAT]; |
db1c291a | 130 | u8 batteries_supported:4; |
89862e3b AS |
131 | u8 manager_present:1; |
132 | u8 charger_present:1; | |
3f86b832 RT |
133 | }; |
134 | ||
94f6c086 AS |
135 | #define to_acpi_sbs(x) container_of(x, struct acpi_sbs, charger) |
136 | ||
db1c291a | 137 | static inline int battery_scale(int log) |
72206233 | 138 | { |
db1c291a AS |
139 | int scale = 1; |
140 | while (log--) | |
141 | scale *= 10; | |
142 | return scale; | |
72206233 VL |
143 | } |
144 | ||
db1c291a | 145 | static inline int acpi_battery_vscale(struct acpi_battery *battery) |
72206233 | 146 | { |
db1c291a | 147 | return battery_scale((battery->spec & 0x0f00) >> 8); |
72206233 VL |
148 | } |
149 | ||
db1c291a | 150 | static inline int acpi_battery_ipscale(struct acpi_battery *battery) |
72206233 | 151 | { |
db1c291a | 152 | return battery_scale((battery->spec & 0xf000) >> 12); |
72206233 VL |
153 | } |
154 | ||
db1c291a | 155 | static inline int acpi_battery_mode(struct acpi_battery *battery) |
72206233 | 156 | { |
db1c291a | 157 | return (battery->mode & 0x8000); |
72206233 | 158 | } |
3f86b832 | 159 | |
db1c291a | 160 | static inline int acpi_battery_scale(struct acpi_battery *battery) |
3f86b832 | 161 | { |
db1c291a AS |
162 | return (acpi_battery_mode(battery) ? 10 : 1) * |
163 | acpi_battery_ipscale(battery); | |
3f86b832 RT |
164 | } |
165 | ||
97749cd9 | 166 | #ifdef CONFIG_ACPI_SYSFS_POWER |
94f6c086 AS |
167 | static 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 | ||
182 | static 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 | ||
195 | static 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 | ||
267 | static enum power_supply_property sbs_ac_props[] = { | |
268 | POWER_SUPPLY_PROP_ONLINE, | |
269 | }; | |
270 | ||
271 | static 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 | ||
288 | static 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 | }; | |
97749cd9 | 304 | #endif |
94f6c086 | 305 | |
db1c291a AS |
306 | /* -------------------------------------------------------------------------- |
307 | Smart Battery System Management | |
308 | -------------------------------------------------------------------------- */ | |
3f86b832 | 309 | |
db1c291a AS |
310 | struct 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 | }; | |
3f86b832 | 315 | |
db1c291a AS |
316 | static 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 | }; | |
3f86b832 | 329 | |
db1c291a AS |
330 | static 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 | }; | |
3f86b832 | 339 | |
db1c291a | 340 | static int acpi_manager_get_info(struct acpi_sbs *sbs) |
3f86b832 | 341 | { |
3f86b832 | 342 | int result = 0; |
db1c291a | 343 | u16 battery_system_info; |
3f86b832 | 344 | |
db1c291a | 345 | result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER, |
94f6c086 | 346 | 0x04, (u8 *)&battery_system_info); |
db1c291a AS |
347 | if (!result) |
348 | sbs->batteries_supported = battery_system_info & 0x000f; | |
635227ee | 349 | return result; |
3f86b832 RT |
350 | } |
351 | ||
352 | static int acpi_battery_get_info(struct acpi_battery *battery) | |
353 | { | |
db1c291a | 354 | int i, result = 0; |
3f86b832 | 355 | |
db1c291a | 356 | for (i = 0; i < ARRAY_SIZE(info_readers); ++i) { |
94f6c086 AS |
357 | 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); | |
db1c291a AS |
363 | if (result) |
364 | break; | |
3f86b832 | 365 | } |
635227ee | 366 | return result; |
3f86b832 RT |
367 | } |
368 | ||
3f86b832 RT |
369 | static int acpi_battery_get_state(struct acpi_battery *battery) |
370 | { | |
db1c291a | 371 | int i, result = 0; |
3f86b832 | 372 | |
94f6c086 AS |
373 | if (battery->update_time && |
374 | time_before(jiffies, battery->update_time + | |
db1c291a AS |
375 | 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) | |
3f86b832 | 385 | goto end; |
3f86b832 | 386 | } |
3f86b832 | 387 | end: |
db1c291a | 388 | battery->update_time = jiffies; |
635227ee | 389 | return result; |
3f86b832 RT |
390 | } |
391 | ||
db1c291a | 392 | static int acpi_battery_get_alarm(struct acpi_battery *battery) |
3f86b832 | 393 | { |
db1c291a AS |
394 | return acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, |
395 | ACPI_SBS_BATTERY, 0x01, | |
94f6c086 | 396 | (u8 *)&battery->alarm_capacity); |
3f86b832 RT |
397 | } |
398 | ||
db1c291a | 399 | static int acpi_battery_set_alarm(struct acpi_battery *battery) |
3f86b832 | 400 | { |
db1c291a | 401 | struct acpi_sbs *sbs = battery->sbs; |
94f6c086 AS |
402 | u16 value, sel = 1 << (battery->id + 12); |
403 | ||
404 | int ret; | |
405 | ||
3f86b832 | 406 | |
db1c291a | 407 | if (sbs->manager_present) { |
94f6c086 | 408 | ret = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER, |
db1c291a | 409 | 0x01, (u8 *)&value); |
94f6c086 AS |
410 | 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 | } | |
3f86b832 | 421 | } |
94f6c086 AS |
422 | ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, ACPI_SBS_BATTERY, |
423 | 0x01, (u8 *)&battery->alarm_capacity, 2); | |
424 | end: | |
425 | return ret; | |
3f86b832 RT |
426 | } |
427 | ||
428 | static int acpi_ac_get_present(struct acpi_sbs *sbs) | |
429 | { | |
db1c291a AS |
430 | int result; |
431 | u16 status; | |
3f86b832 | 432 | |
db1c291a AS |
433 | 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; | |
635227ee | 437 | return result; |
3f86b832 RT |
438 | } |
439 | ||
97749cd9 | 440 | #ifdef CONFIG_ACPI_SYSFS_POWER |
8bd95532 AS |
441 | static 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 | ||
451 | static 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 | ||
465 | static 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 | }; | |
97749cd9 | 470 | #endif |
8bd95532 | 471 | |
3f86b832 RT |
472 | /* -------------------------------------------------------------------------- |
473 | FS Interface (/proc/acpi) | |
474 | -------------------------------------------------------------------------- */ | |
475 | ||
fdcedbba | 476 | #ifdef CONFIG_ACPI_PROCFS_POWER |
3f86b832 | 477 | /* Generic Routines */ |
3f86b832 | 478 | static int |
db1c291a | 479 | acpi_sbs_add_fs(struct proc_dir_entry **dir, |
94f6c086 AS |
480 | 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) | |
3f86b832 | 485 | { |
3f86b832 RT |
486 | if (!*dir) { |
487 | *dir = proc_mkdir(dir_name, parent_dir); | |
488 | if (!*dir) { | |
635227ee | 489 | return -ENODEV; |
3f86b832 RT |
490 | } |
491 | (*dir)->owner = THIS_MODULE; | |
492 | } | |
493 | ||
494 | /* 'info' [R] */ | |
cf7acfab DL |
495 | if (info_fops) |
496 | proc_create_data(ACPI_SBS_FILE_INFO, S_IRUGO, *dir, | |
497 | info_fops, data); | |
3f86b832 RT |
498 | |
499 | /* 'state' [R] */ | |
cf7acfab DL |
500 | if (state_fops) |
501 | proc_create_data(ACPI_SBS_FILE_STATE, S_IRUGO, *dir, | |
502 | state_fops, data); | |
3f86b832 RT |
503 | |
504 | /* 'alarm' [R/W] */ | |
cf7acfab DL |
505 | if (alarm_fops) |
506 | proc_create_data(ACPI_SBS_FILE_ALARM, S_IRUGO, *dir, | |
507 | alarm_fops, data); | |
635227ee | 508 | return 0; |
3f86b832 RT |
509 | } |
510 | ||
511 | static void | |
db1c291a | 512 | acpi_sbs_remove_fs(struct proc_dir_entry **dir, |
3f86b832 RT |
513 | struct proc_dir_entry *parent_dir) |
514 | { | |
3f86b832 RT |
515 | if (*dir) { |
516 | remove_proc_entry(ACPI_SBS_FILE_INFO, *dir); | |
517 | remove_proc_entry(ACPI_SBS_FILE_STATE, *dir); | |
518 | remove_proc_entry(ACPI_SBS_FILE_ALARM, *dir); | |
519 | remove_proc_entry((*dir)->name, parent_dir); | |
520 | *dir = NULL; | |
521 | } | |
3f86b832 RT |
522 | } |
523 | ||
524 | /* Smart Battery Interface */ | |
3f86b832 RT |
525 | static struct proc_dir_entry *acpi_battery_dir = NULL; |
526 | ||
db1c291a AS |
527 | static inline char *acpi_battery_units(struct acpi_battery *battery) |
528 | { | |
5a21e4fe | 529 | return acpi_battery_mode(battery) ? " mW" : " mA"; |
db1c291a AS |
530 | } |
531 | ||
532 | ||
3f86b832 RT |
533 | static int acpi_battery_read_info(struct seq_file *seq, void *offset) |
534 | { | |
50dd0969 | 535 | struct acpi_battery *battery = seq->private; |
72206233 | 536 | struct acpi_sbs *sbs = battery->sbs; |
3f86b832 RT |
537 | int result = 0; |
538 | ||
db1c291a | 539 | mutex_lock(&sbs->lock); |
3f86b832 | 540 | |
db1c291a AS |
541 | seq_printf(seq, "present: %s\n", |
542 | (battery->present) ? "yes" : "no"); | |
543 | if (!battery->present) | |
72206233 | 544 | goto end; |
3f86b832 | 545 | |
5a21e4fe | 546 | seq_printf(seq, "design capacity: %i%sh\n", |
db1c291a AS |
547 | battery->design_capacity * acpi_battery_scale(battery), |
548 | acpi_battery_units(battery)); | |
5a21e4fe | 549 | seq_printf(seq, "last full capacity: %i%sh\n", |
db1c291a AS |
550 | battery->full_charge_capacity * acpi_battery_scale(battery), |
551 | acpi_battery_units(battery)); | |
3f86b832 | 552 | seq_printf(seq, "battery technology: rechargeable\n"); |
3f86b832 | 553 | seq_printf(seq, "design voltage: %i mV\n", |
db1c291a | 554 | battery->design_voltage * acpi_battery_vscale(battery)); |
3f86b832 RT |
555 | seq_printf(seq, "design capacity warning: unknown\n"); |
556 | seq_printf(seq, "design capacity low: unknown\n"); | |
557 | seq_printf(seq, "capacity granularity 1: unknown\n"); | |
558 | seq_printf(seq, "capacity granularity 2: unknown\n"); | |
db1c291a | 559 | seq_printf(seq, "model number: %s\n", battery->device_name); |
3f86b832 | 560 | seq_printf(seq, "serial number: %i\n", |
89862e3b | 561 | battery->serial_number); |
3f86b832 | 562 | seq_printf(seq, "battery type: %s\n", |
89862e3b | 563 | battery->device_chemistry); |
3f86b832 | 564 | seq_printf(seq, "OEM info: %s\n", |
89862e3b | 565 | battery->manufacturer_name); |
3f86b832 | 566 | end: |
db1c291a | 567 | mutex_unlock(&sbs->lock); |
635227ee | 568 | return result; |
3f86b832 RT |
569 | } |
570 | ||
571 | static int acpi_battery_info_open_fs(struct inode *inode, struct file *file) | |
572 | { | |
573 | return single_open(file, acpi_battery_read_info, PDE(inode)->data); | |
574 | } | |
575 | ||
576 | static int acpi_battery_read_state(struct seq_file *seq, void *offset) | |
577 | { | |
72206233 VL |
578 | struct acpi_battery *battery = seq->private; |
579 | struct acpi_sbs *sbs = battery->sbs; | |
5a21e4fe | 580 | int rate; |
3f86b832 | 581 | |
db1c291a AS |
582 | mutex_lock(&sbs->lock); |
583 | seq_printf(seq, "present: %s\n", | |
584 | (battery->present) ? "yes" : "no"); | |
585 | if (!battery->present) | |
3f86b832 | 586 | goto end; |
3f86b832 | 587 | |
db1c291a AS |
588 | acpi_battery_get_state(battery); |
589 | seq_printf(seq, "capacity state: %s\n", | |
590 | (battery->state & 0x0010) ? "critical" : "ok"); | |
591 | seq_printf(seq, "charging state: %s\n", | |
592 | (battery->current_now < 0) ? "discharging" : | |
593 | ((battery->current_now > 0) ? "charging" : "charged")); | |
5a21e4fe AS |
594 | rate = abs(battery->current_now) * acpi_battery_ipscale(battery); |
595 | rate *= (acpi_battery_mode(battery))?(battery->voltage_now * | |
596 | acpi_battery_vscale(battery)/1000):1; | |
597 | seq_printf(seq, "present rate: %d%s\n", rate, | |
598 | acpi_battery_units(battery)); | |
599 | seq_printf(seq, "remaining capacity: %i%sh\n", | |
db1c291a AS |
600 | battery->capacity_now * acpi_battery_scale(battery), |
601 | acpi_battery_units(battery)); | |
3f86b832 | 602 | seq_printf(seq, "present voltage: %i mV\n", |
db1c291a | 603 | battery->voltage_now * acpi_battery_vscale(battery)); |
3f86b832 RT |
604 | |
605 | end: | |
db1c291a | 606 | mutex_unlock(&sbs->lock); |
5a21e4fe | 607 | return 0; |
3f86b832 RT |
608 | } |
609 | ||
610 | static int acpi_battery_state_open_fs(struct inode *inode, struct file *file) | |
611 | { | |
612 | return single_open(file, acpi_battery_read_state, PDE(inode)->data); | |
613 | } | |
614 | ||
615 | static int acpi_battery_read_alarm(struct seq_file *seq, void *offset) | |
616 | { | |
50dd0969 | 617 | struct acpi_battery *battery = seq->private; |
72206233 | 618 | struct acpi_sbs *sbs = battery->sbs; |
3f86b832 | 619 | int result = 0; |
3f86b832 | 620 | |
db1c291a | 621 | mutex_lock(&sbs->lock); |
3f86b832 | 622 | |
89862e3b | 623 | if (!battery->present) { |
3f86b832 RT |
624 | seq_printf(seq, "present: no\n"); |
625 | goto end; | |
626 | } | |
627 | ||
db1c291a | 628 | acpi_battery_get_alarm(battery); |
3f86b832 | 629 | seq_printf(seq, "alarm: "); |
db1c291a | 630 | if (battery->alarm_capacity) |
5a21e4fe | 631 | seq_printf(seq, "%i%sh\n", |
db1c291a AS |
632 | battery->alarm_capacity * |
633 | acpi_battery_scale(battery), | |
634 | acpi_battery_units(battery)); | |
635 | else | |
3f86b832 | 636 | seq_printf(seq, "disabled\n"); |
3f86b832 | 637 | end: |
db1c291a | 638 | mutex_unlock(&sbs->lock); |
635227ee | 639 | return result; |
3f86b832 RT |
640 | } |
641 | ||
642 | static ssize_t | |
643 | acpi_battery_write_alarm(struct file *file, const char __user * buffer, | |
644 | size_t count, loff_t * ppos) | |
645 | { | |
50dd0969 JE |
646 | struct seq_file *seq = file->private_data; |
647 | struct acpi_battery *battery = seq->private; | |
72206233 | 648 | struct acpi_sbs *sbs = battery->sbs; |
3f86b832 | 649 | char alarm_string[12] = { '\0' }; |
db1c291a AS |
650 | int result = 0; |
651 | mutex_lock(&sbs->lock); | |
89862e3b | 652 | if (!battery->present) { |
3f86b832 RT |
653 | result = -ENODEV; |
654 | goto end; | |
655 | } | |
3f86b832 RT |
656 | if (count > sizeof(alarm_string) - 1) { |
657 | result = -EINVAL; | |
658 | goto end; | |
659 | } | |
3f86b832 RT |
660 | if (copy_from_user(alarm_string, buffer, count)) { |
661 | result = -EFAULT; | |
662 | goto end; | |
663 | } | |
3f86b832 | 664 | alarm_string[count] = 0; |
94f6c086 AS |
665 | battery->alarm_capacity = simple_strtoul(alarm_string, NULL, 0) / |
666 | acpi_battery_scale(battery); | |
db1c291a | 667 | acpi_battery_set_alarm(battery); |
3f86b832 | 668 | end: |
db1c291a AS |
669 | mutex_unlock(&sbs->lock); |
670 | if (result) | |
635227ee | 671 | return result; |
db1c291a | 672 | return count; |
3f86b832 RT |
673 | } |
674 | ||
675 | static int acpi_battery_alarm_open_fs(struct inode *inode, struct file *file) | |
676 | { | |
677 | return single_open(file, acpi_battery_read_alarm, PDE(inode)->data); | |
678 | } | |
679 | ||
680 | static struct file_operations acpi_battery_info_fops = { | |
681 | .open = acpi_battery_info_open_fs, | |
682 | .read = seq_read, | |
683 | .llseek = seq_lseek, | |
684 | .release = single_release, | |
685 | .owner = THIS_MODULE, | |
686 | }; | |
687 | ||
688 | static struct file_operations acpi_battery_state_fops = { | |
689 | .open = acpi_battery_state_open_fs, | |
690 | .read = seq_read, | |
691 | .llseek = seq_lseek, | |
692 | .release = single_release, | |
693 | .owner = THIS_MODULE, | |
694 | }; | |
695 | ||
696 | static struct file_operations acpi_battery_alarm_fops = { | |
697 | .open = acpi_battery_alarm_open_fs, | |
698 | .read = seq_read, | |
699 | .write = acpi_battery_write_alarm, | |
700 | .llseek = seq_lseek, | |
701 | .release = single_release, | |
702 | .owner = THIS_MODULE, | |
703 | }; | |
704 | ||
705 | /* Legacy AC Adapter Interface */ | |
706 | ||
707 | static struct proc_dir_entry *acpi_ac_dir = NULL; | |
708 | ||
709 | static int acpi_ac_read_state(struct seq_file *seq, void *offset) | |
710 | { | |
3f86b832 | 711 | |
db1c291a | 712 | struct acpi_sbs *sbs = seq->private; |
3f86b832 | 713 | |
db1c291a | 714 | mutex_lock(&sbs->lock); |
3f86b832 RT |
715 | |
716 | seq_printf(seq, "state: %s\n", | |
89862e3b | 717 | sbs->charger_present ? "on-line" : "off-line"); |
3f86b832 | 718 | |
db1c291a | 719 | mutex_unlock(&sbs->lock); |
635227ee | 720 | return 0; |
3f86b832 RT |
721 | } |
722 | ||
723 | static int acpi_ac_state_open_fs(struct inode *inode, struct file *file) | |
724 | { | |
725 | return single_open(file, acpi_ac_read_state, PDE(inode)->data); | |
726 | } | |
727 | ||
728 | static struct file_operations acpi_ac_state_fops = { | |
729 | .open = acpi_ac_state_open_fs, | |
730 | .read = seq_read, | |
731 | .llseek = seq_lseek, | |
732 | .release = single_release, | |
733 | .owner = THIS_MODULE, | |
734 | }; | |
735 | ||
66e4b72b AS |
736 | #endif |
737 | ||
3f86b832 RT |
738 | /* -------------------------------------------------------------------------- |
739 | Driver Interface | |
740 | -------------------------------------------------------------------------- */ | |
db1c291a | 741 | static int acpi_battery_read(struct acpi_battery *battery) |
3f86b832 | 742 | { |
db1c291a AS |
743 | int result = 0, saved_present = battery->present; |
744 | u16 state; | |
3f86b832 | 745 | |
db1c291a AS |
746 | if (battery->sbs->manager_present) { |
747 | result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, | |
748 | ACPI_SBS_MANAGER, 0x01, (u8 *)&state); | |
749 | if (!result) | |
750 | battery->present = state & (1 << battery->id); | |
751 | state &= 0x0fff; | |
752 | state |= 1 << (battery->id + 12); | |
753 | acpi_smbus_write(battery->sbs->hc, SMBUS_WRITE_WORD, | |
754 | ACPI_SBS_MANAGER, 0x01, (u8 *)&state, 2); | |
755 | } else if (battery->id == 0) | |
756 | battery->present = 1; | |
757 | if (result || !battery->present) | |
758 | return result; | |
3f86b832 | 759 | |
db1c291a AS |
760 | if (saved_present != battery->present) { |
761 | battery->update_time = 0; | |
762 | result = acpi_battery_get_info(battery); | |
763 | if (result) | |
764 | return result; | |
765 | } | |
766 | result = acpi_battery_get_state(battery); | |
767 | return result; | |
768 | } | |
3f86b832 | 769 | |
94f6c086 | 770 | /* Smart Battery */ |
db1c291a AS |
771 | static int acpi_battery_add(struct acpi_sbs *sbs, int id) |
772 | { | |
db1c291a | 773 | struct acpi_battery *battery = &sbs->battery[id]; |
94f6c086 AS |
774 | int result; |
775 | ||
3f86b832 RT |
776 | battery->id = id; |
777 | battery->sbs = sbs; | |
db1c291a AS |
778 | result = acpi_battery_read(battery); |
779 | if (result) | |
780 | return result; | |
3f86b832 | 781 | |
db1c291a | 782 | sprintf(battery->name, ACPI_BATTERY_DIR_NAME, id); |
fdcedbba | 783 | #ifdef CONFIG_ACPI_PROCFS_POWER |
db1c291a AS |
784 | acpi_sbs_add_fs(&battery->proc_entry, acpi_battery_dir, |
785 | battery->name, &acpi_battery_info_fops, | |
786 | &acpi_battery_state_fops, &acpi_battery_alarm_fops, | |
787 | battery); | |
66e4b72b | 788 | #endif |
97749cd9 | 789 | #ifdef CONFIG_ACPI_SYSFS_POWER |
94f6c086 AS |
790 | battery->bat.name = battery->name; |
791 | battery->bat.type = POWER_SUPPLY_TYPE_BATTERY; | |
792 | if (!acpi_battery_mode(battery)) { | |
793 | battery->bat.properties = sbs_charge_battery_props; | |
794 | battery->bat.num_properties = | |
795 | ARRAY_SIZE(sbs_charge_battery_props); | |
796 | } else { | |
797 | battery->bat.properties = sbs_energy_battery_props; | |
798 | battery->bat.num_properties = | |
799 | ARRAY_SIZE(sbs_energy_battery_props); | |
800 | } | |
801 | battery->bat.get_property = acpi_sbs_battery_get_property; | |
802 | result = power_supply_register(&sbs->device->dev, &battery->bat); | |
037cbc63 JG |
803 | if (result) |
804 | goto end; | |
805 | result = device_create_file(battery->bat.dev, &alarm_attr); | |
806 | if (result) | |
807 | goto end; | |
808 | battery->have_sysfs_alarm = 1; | |
809 | end: | |
97749cd9 | 810 | #endif |
72206233 | 811 | printk(KERN_INFO PREFIX "%s [%s]: Battery Slot [%s] (battery %s)\n", |
db1c291a | 812 | ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device), |
bbafbecb | 813 | battery->name, battery->present ? "present" : "absent"); |
635227ee | 814 | return result; |
3f86b832 RT |
815 | } |
816 | ||
817 | static void acpi_battery_remove(struct acpi_sbs *sbs, int id) | |
818 | { | |
037cbc63 | 819 | struct acpi_battery *battery = &sbs->battery[id]; |
97749cd9 | 820 | #ifdef CONFIG_ACPI_SYSFS_POWER |
037cbc63 JG |
821 | if (battery->bat.dev) { |
822 | if (battery->have_sysfs_alarm) | |
823 | device_remove_file(battery->bat.dev, &alarm_attr); | |
824 | power_supply_unregister(&battery->bat); | |
3f86b832 | 825 | } |
97749cd9 | 826 | #endif |
c2e46d2e | 827 | #ifdef CONFIG_ACPI_PROCFS_POWER |
037cbc63 JG |
828 | if (battery->proc_entry) |
829 | acpi_sbs_remove_fs(&battery->proc_entry, acpi_battery_dir); | |
66e4b72b | 830 | #endif |
3f86b832 RT |
831 | } |
832 | ||
db1c291a | 833 | static int acpi_charger_add(struct acpi_sbs *sbs) |
3f86b832 RT |
834 | { |
835 | int result; | |
836 | ||
3f86b832 | 837 | result = acpi_ac_get_present(sbs); |
db1c291a | 838 | if (result) |
3f86b832 | 839 | goto end; |
fdcedbba | 840 | #ifdef CONFIG_ACPI_PROCFS_POWER |
db1c291a AS |
841 | result = acpi_sbs_add_fs(&sbs->charger_entry, acpi_ac_dir, |
842 | ACPI_AC_DIR_NAME, NULL, | |
843 | &acpi_ac_state_fops, NULL, sbs); | |
844 | if (result) | |
3f86b832 | 845 | goto end; |
66e4b72b | 846 | #endif |
97749cd9 | 847 | #ifdef CONFIG_ACPI_SYSFS_POWER |
94f6c086 AS |
848 | sbs->charger.name = "sbs-charger"; |
849 | sbs->charger.type = POWER_SUPPLY_TYPE_MAINS; | |
850 | sbs->charger.properties = sbs_ac_props; | |
851 | sbs->charger.num_properties = ARRAY_SIZE(sbs_ac_props); | |
852 | sbs->charger.get_property = sbs_get_ac_property; | |
853 | power_supply_register(&sbs->device->dev, &sbs->charger); | |
97749cd9 | 854 | #endif |
72206233 VL |
855 | printk(KERN_INFO PREFIX "%s [%s]: AC Adapter [%s] (%s)\n", |
856 | ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device), | |
89862e3b | 857 | ACPI_AC_DIR_NAME, sbs->charger_present ? "on-line" : "off-line"); |
3f86b832 | 858 | end: |
635227ee | 859 | return result; |
3f86b832 RT |
860 | } |
861 | ||
db1c291a | 862 | static void acpi_charger_remove(struct acpi_sbs *sbs) |
3f86b832 | 863 | { |
97749cd9 | 864 | #ifdef CONFIG_ACPI_SYSFS_POWER |
94f6c086 AS |
865 | if (sbs->charger.dev) |
866 | power_supply_unregister(&sbs->charger); | |
97749cd9 | 867 | #endif |
fdcedbba | 868 | #ifdef CONFIG_ACPI_PROCFS_POWER |
db1c291a AS |
869 | if (sbs->charger_entry) |
870 | acpi_sbs_remove_fs(&sbs->charger_entry, acpi_ac_dir); | |
66e4b72b | 871 | #endif |
3f86b832 RT |
872 | } |
873 | ||
e5685b9d | 874 | static void acpi_sbs_callback(void *context) |
3f86b832 | 875 | { |
db1c291a AS |
876 | int id; |
877 | struct acpi_sbs *sbs = context; | |
878 | struct acpi_battery *bat; | |
879 | u8 saved_charger_state = sbs->charger_present; | |
880 | u8 saved_battery_state; | |
881 | acpi_ac_get_present(sbs); | |
882 | if (sbs->charger_present != saved_charger_state) { | |
94f6c086 | 883 | #ifdef CONFIG_ACPI_PROC_EVENT |
db1c291a AS |
884 | acpi_bus_generate_proc_event4(ACPI_AC_CLASS, ACPI_AC_DIR_NAME, |
885 | ACPI_SBS_NOTIFY_STATUS, | |
886 | sbs->charger_present); | |
94f6c086 | 887 | #endif |
97749cd9 | 888 | #ifdef CONFIG_ACPI_SYSFS_POWER |
94f6c086 | 889 | kobject_uevent(&sbs->charger.dev->kobj, KOBJ_CHANGE); |
97749cd9 | 890 | #endif |
3f86b832 | 891 | } |
db1c291a AS |
892 | if (sbs->manager_present) { |
893 | for (id = 0; id < MAX_SBS_BAT; ++id) { | |
894 | if (!(sbs->batteries_supported & (1 << id))) | |
895 | continue; | |
896 | bat = &sbs->battery[id]; | |
897 | saved_battery_state = bat->present; | |
898 | acpi_battery_read(bat); | |
899 | if (saved_battery_state == bat->present) | |
900 | continue; | |
94f6c086 | 901 | #ifdef CONFIG_ACPI_PROC_EVENT |
db1c291a AS |
902 | acpi_bus_generate_proc_event4(ACPI_BATTERY_CLASS, |
903 | bat->name, | |
904 | ACPI_SBS_NOTIFY_STATUS, | |
905 | bat->present); | |
94f6c086 | 906 | #endif |
97749cd9 | 907 | #ifdef CONFIG_ACPI_SYSFS_POWER |
94f6c086 | 908 | kobject_uevent(&bat->bat.dev->kobj, KOBJ_CHANGE); |
97749cd9 | 909 | #endif |
3f86b832 | 910 | } |
3f86b832 | 911 | } |
3f86b832 RT |
912 | } |
913 | ||
db1c291a | 914 | static int acpi_sbs_remove(struct acpi_device *device, int type); |
3f86b832 RT |
915 | |
916 | static int acpi_sbs_add(struct acpi_device *device) | |
917 | { | |
db1c291a AS |
918 | struct acpi_sbs *sbs; |
919 | int result = 0; | |
6d15702c | 920 | int id; |
3f86b832 | 921 | |
36bcbec7 | 922 | sbs = kzalloc(sizeof(struct acpi_sbs), GFP_KERNEL); |
3f86b832 | 923 | if (!sbs) { |
72206233 VL |
924 | result = -ENOMEM; |
925 | goto end; | |
3f86b832 | 926 | } |
3f86b832 | 927 | |
db1c291a | 928 | mutex_init(&sbs->lock); |
72206233 | 929 | |
91087dfa | 930 | sbs->hc = acpi_driver_data(device->parent); |
db1c291a | 931 | sbs->device = device; |
3f86b832 RT |
932 | strcpy(acpi_device_name(device), ACPI_SBS_DEVICE_NAME); |
933 | strcpy(acpi_device_class(device), ACPI_SBS_CLASS); | |
db89b4f0 | 934 | device->driver_data = sbs; |
3f86b832 | 935 | |
db1c291a | 936 | result = acpi_charger_add(sbs); |
72206233 VL |
937 | if (result) |
938 | goto end; | |
3f86b832 | 939 | |
db1c291a AS |
940 | result = acpi_manager_get_info(sbs); |
941 | if (!result) { | |
942 | sbs->manager_present = 1; | |
943 | for (id = 0; id < MAX_SBS_BAT; ++id) | |
944 | if ((sbs->batteries_supported & (1 << id))) | |
945 | acpi_battery_add(sbs, id); | |
946 | } else | |
947 | acpi_battery_add(sbs, 0); | |
948 | acpi_smbus_register_callback(sbs->hc, acpi_sbs_callback, sbs); | |
3f86b832 | 949 | end: |
db1c291a AS |
950 | if (result) |
951 | acpi_sbs_remove(device, 0); | |
635227ee | 952 | return result; |
3f86b832 RT |
953 | } |
954 | ||
72206233 | 955 | static int acpi_sbs_remove(struct acpi_device *device, int type) |
3f86b832 | 956 | { |
cece9014 | 957 | struct acpi_sbs *sbs; |
3f86b832 RT |
958 | int id; |
959 | ||
db1c291a | 960 | if (!device) |
963497c1 | 961 | return -EINVAL; |
72206233 | 962 | sbs = acpi_driver_data(device); |
db1c291a | 963 | if (!sbs) |
635227ee | 964 | return -EINVAL; |
db1c291a AS |
965 | mutex_lock(&sbs->lock); |
966 | acpi_smbus_unregister_callback(sbs->hc); | |
967 | for (id = 0; id < MAX_SBS_BAT; ++id) | |
3f86b832 | 968 | acpi_battery_remove(sbs, id); |
db1c291a AS |
969 | acpi_charger_remove(sbs); |
970 | mutex_unlock(&sbs->lock); | |
971 | mutex_destroy(&sbs->lock); | |
3f86b832 | 972 | kfree(sbs); |
635227ee | 973 | return 0; |
3f86b832 RT |
974 | } |
975 | ||
72206233 VL |
976 | static void acpi_sbs_rmdirs(void) |
977 | { | |
fdcedbba | 978 | #ifdef CONFIG_ACPI_PROCFS_POWER |
72206233 VL |
979 | if (acpi_ac_dir) { |
980 | acpi_unlock_ac_dir(acpi_ac_dir); | |
981 | acpi_ac_dir = NULL; | |
982 | } | |
983 | if (acpi_battery_dir) { | |
984 | acpi_unlock_battery_dir(acpi_battery_dir); | |
985 | acpi_battery_dir = NULL; | |
986 | } | |
66e4b72b | 987 | #endif |
72206233 VL |
988 | } |
989 | ||
990 | static int acpi_sbs_resume(struct acpi_device *device) | |
991 | { | |
992 | struct acpi_sbs *sbs; | |
72206233 VL |
993 | if (!device) |
994 | return -EINVAL; | |
72206233 | 995 | sbs = device->driver_data; |
db1c291a | 996 | acpi_sbs_callback(sbs); |
72206233 VL |
997 | return 0; |
998 | } | |
999 | ||
94f6c086 AS |
1000 | static struct acpi_driver acpi_sbs_driver = { |
1001 | .name = "sbs", | |
1002 | .class = ACPI_SBS_CLASS, | |
1003 | .ids = sbs_device_ids, | |
1004 | .ops = { | |
1005 | .add = acpi_sbs_add, | |
1006 | .remove = acpi_sbs_remove, | |
1007 | .resume = acpi_sbs_resume, | |
1008 | }, | |
1009 | }; | |
1010 | ||
3f86b832 RT |
1011 | static int __init acpi_sbs_init(void) |
1012 | { | |
1013 | int result = 0; | |
1014 | ||
b20d2aeb LB |
1015 | if (acpi_disabled) |
1016 | return -ENODEV; | |
fdcedbba | 1017 | #ifdef CONFIG_ACPI_PROCFS_POWER |
3f86b832 | 1018 | acpi_ac_dir = acpi_lock_ac_dir(); |
94f6c086 | 1019 | if (!acpi_ac_dir) |
635227ee | 1020 | return -ENODEV; |
3f86b832 RT |
1021 | acpi_battery_dir = acpi_lock_battery_dir(); |
1022 | if (!acpi_battery_dir) { | |
72206233 | 1023 | acpi_sbs_rmdirs(); |
635227ee | 1024 | return -ENODEV; |
3f86b832 | 1025 | } |
66e4b72b | 1026 | #endif |
3f86b832 RT |
1027 | result = acpi_bus_register_driver(&acpi_sbs_driver); |
1028 | if (result < 0) { | |
72206233 | 1029 | acpi_sbs_rmdirs(); |
635227ee | 1030 | return -ENODEV; |
3f86b832 | 1031 | } |
635227ee | 1032 | return 0; |
3f86b832 RT |
1033 | } |
1034 | ||
1035 | static void __exit acpi_sbs_exit(void) | |
1036 | { | |
3f86b832 | 1037 | acpi_bus_unregister_driver(&acpi_sbs_driver); |
72206233 | 1038 | acpi_sbs_rmdirs(); |
635227ee | 1039 | return; |
3f86b832 RT |
1040 | } |
1041 | ||
1042 | module_init(acpi_sbs_init); | |
1043 | module_exit(acpi_sbs_exit); |