Commit | Line | Data |
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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 | ||
a192a958 LB |
49 | #define PREFIX "ACPI: " |
50 | ||
3f86b832 RT |
51 | #define ACPI_SBS_CLASS "sbs" |
52 | #define ACPI_AC_CLASS "ac_adapter" | |
53 | #define ACPI_BATTERY_CLASS "battery" | |
3f86b832 RT |
54 | #define ACPI_SBS_DEVICE_NAME "Smart Battery System" |
55 | #define ACPI_SBS_FILE_INFO "info" | |
56 | #define ACPI_SBS_FILE_STATE "state" | |
57 | #define ACPI_SBS_FILE_ALARM "alarm" | |
58 | #define ACPI_BATTERY_DIR_NAME "BAT%i" | |
59 | #define ACPI_AC_DIR_NAME "AC0" | |
3f86b832 | 60 | |
db1c291a AS |
61 | #define ACPI_SBS_NOTIFY_STATUS 0x80 |
62 | #define ACPI_SBS_NOTIFY_INFO 0x81 | |
3f86b832 | 63 | |
db1c291a | 64 | MODULE_AUTHOR("Alexey Starikovskiy <astarikovskiy@suse.de>"); |
3f86b832 RT |
65 | MODULE_DESCRIPTION("Smart Battery System ACPI interface driver"); |
66 | MODULE_LICENSE("GPL"); | |
67 | ||
db1c291a AS |
68 | static unsigned int cache_time = 1000; |
69 | module_param(cache_time, uint, 0644); | |
70 | MODULE_PARM_DESC(cache_time, "cache time in milliseconds"); | |
6d15702c VL |
71 | |
72 | extern struct proc_dir_entry *acpi_lock_ac_dir(void); | |
73 | extern struct proc_dir_entry *acpi_lock_battery_dir(void); | |
74 | extern void acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir); | |
75 | extern void acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir); | |
76 | ||
db1c291a | 77 | #define MAX_SBS_BAT 4 |
6d15702c VL |
78 | #define ACPI_SBS_BLOCK_MAX 32 |
79 | ||
1ba90e3a | 80 | static const struct acpi_device_id sbs_device_ids[] = { |
91087dfa | 81 | {"ACPI0002", 0}, |
1ba90e3a TR |
82 | {"", 0}, |
83 | }; | |
84 | MODULE_DEVICE_TABLE(acpi, sbs_device_ids); | |
85 | ||
3f86b832 | 86 | struct acpi_battery { |
97749cd9 | 87 | #ifdef CONFIG_ACPI_SYSFS_POWER |
94f6c086 | 88 | struct power_supply bat; |
97749cd9 | 89 | #endif |
3f86b832 | 90 | struct acpi_sbs *sbs; |
fdcedbba | 91 | #ifdef CONFIG_ACPI_PROCFS_POWER |
89862e3b | 92 | struct proc_dir_entry *proc_entry; |
66e4b72b | 93 | #endif |
db1c291a AS |
94 | unsigned long update_time; |
95 | char name[8]; | |
89862e3b AS |
96 | char manufacturer_name[ACPI_SBS_BLOCK_MAX]; |
97 | char device_name[ACPI_SBS_BLOCK_MAX]; | |
98 | char device_chemistry[ACPI_SBS_BLOCK_MAX]; | |
94f6c086 | 99 | u16 alarm_capacity; |
89862e3b AS |
100 | u16 full_charge_capacity; |
101 | u16 design_capacity; | |
102 | u16 design_voltage; | |
103 | u16 serial_number; | |
db1c291a AS |
104 | u16 cycle_count; |
105 | u16 temp_now; | |
89862e3b | 106 | u16 voltage_now; |
7faa144a AS |
107 | s16 rate_now; |
108 | s16 rate_avg; | |
89862e3b | 109 | u16 capacity_now; |
db1c291a | 110 | u16 state_of_charge; |
89862e3b | 111 | u16 state; |
89862e3b | 112 | u16 mode; |
db1c291a | 113 | u16 spec; |
89862e3b | 114 | u8 id; |
89862e3b | 115 | u8 present:1; |
037cbc63 | 116 | u8 have_sysfs_alarm:1; |
3f86b832 RT |
117 | }; |
118 | ||
94f6c086 AS |
119 | #define to_acpi_battery(x) container_of(x, struct acpi_battery, bat); |
120 | ||
3f86b832 | 121 | struct acpi_sbs { |
97749cd9 | 122 | #ifdef CONFIG_ACPI_SYSFS_POWER |
94f6c086 | 123 | struct power_supply charger; |
97749cd9 | 124 | #endif |
3f86b832 | 125 | struct acpi_device *device; |
91087dfa | 126 | struct acpi_smb_hc *hc; |
db1c291a | 127 | struct mutex lock; |
fdcedbba | 128 | #ifdef CONFIG_ACPI_PROCFS_POWER |
db1c291a | 129 | struct proc_dir_entry *charger_entry; |
66e4b72b | 130 | #endif |
3f86b832 | 131 | struct acpi_battery battery[MAX_SBS_BAT]; |
db1c291a | 132 | u8 batteries_supported:4; |
89862e3b AS |
133 | u8 manager_present:1; |
134 | u8 charger_present:1; | |
3f86b832 RT |
135 | }; |
136 | ||
94f6c086 AS |
137 | #define to_acpi_sbs(x) container_of(x, struct acpi_sbs, charger) |
138 | ||
db1c291a | 139 | static inline int battery_scale(int log) |
72206233 | 140 | { |
db1c291a AS |
141 | int scale = 1; |
142 | while (log--) | |
143 | scale *= 10; | |
144 | return scale; | |
72206233 VL |
145 | } |
146 | ||
db1c291a | 147 | static inline int acpi_battery_vscale(struct acpi_battery *battery) |
72206233 | 148 | { |
db1c291a | 149 | return battery_scale((battery->spec & 0x0f00) >> 8); |
72206233 VL |
150 | } |
151 | ||
db1c291a | 152 | static inline int acpi_battery_ipscale(struct acpi_battery *battery) |
72206233 | 153 | { |
db1c291a | 154 | return battery_scale((battery->spec & 0xf000) >> 12); |
72206233 VL |
155 | } |
156 | ||
db1c291a | 157 | static inline int acpi_battery_mode(struct acpi_battery *battery) |
72206233 | 158 | { |
db1c291a | 159 | return (battery->mode & 0x8000); |
72206233 | 160 | } |
3f86b832 | 161 | |
db1c291a | 162 | static inline int acpi_battery_scale(struct acpi_battery *battery) |
3f86b832 | 163 | { |
db1c291a AS |
164 | return (acpi_battery_mode(battery) ? 10 : 1) * |
165 | acpi_battery_ipscale(battery); | |
3f86b832 RT |
166 | } |
167 | ||
97749cd9 | 168 | #ifdef CONFIG_ACPI_SYSFS_POWER |
94f6c086 AS |
169 | static int sbs_get_ac_property(struct power_supply *psy, |
170 | enum power_supply_property psp, | |
171 | union power_supply_propval *val) | |
172 | { | |
173 | struct acpi_sbs *sbs = to_acpi_sbs(psy); | |
174 | switch (psp) { | |
175 | case POWER_SUPPLY_PROP_ONLINE: | |
176 | val->intval = sbs->charger_present; | |
177 | break; | |
178 | default: | |
179 | return -EINVAL; | |
180 | } | |
181 | return 0; | |
182 | } | |
183 | ||
184 | static int acpi_battery_technology(struct acpi_battery *battery) | |
185 | { | |
186 | if (!strcasecmp("NiCd", battery->device_chemistry)) | |
187 | return POWER_SUPPLY_TECHNOLOGY_NiCd; | |
188 | if (!strcasecmp("NiMH", battery->device_chemistry)) | |
189 | return POWER_SUPPLY_TECHNOLOGY_NiMH; | |
190 | if (!strcasecmp("LION", battery->device_chemistry)) | |
191 | return POWER_SUPPLY_TECHNOLOGY_LION; | |
192 | if (!strcasecmp("LiP", battery->device_chemistry)) | |
193 | return POWER_SUPPLY_TECHNOLOGY_LIPO; | |
194 | return POWER_SUPPLY_TECHNOLOGY_UNKNOWN; | |
195 | } | |
196 | ||
197 | static int acpi_sbs_battery_get_property(struct power_supply *psy, | |
198 | enum power_supply_property psp, | |
199 | union power_supply_propval *val) | |
200 | { | |
201 | struct acpi_battery *battery = to_acpi_battery(psy); | |
202 | ||
203 | if ((!battery->present) && psp != POWER_SUPPLY_PROP_PRESENT) | |
204 | return -ENODEV; | |
205 | switch (psp) { | |
206 | case POWER_SUPPLY_PROP_STATUS: | |
7faa144a | 207 | if (battery->rate_now < 0) |
94f6c086 | 208 | val->intval = POWER_SUPPLY_STATUS_DISCHARGING; |
7faa144a | 209 | else if (battery->rate_now > 0) |
94f6c086 AS |
210 | val->intval = POWER_SUPPLY_STATUS_CHARGING; |
211 | else | |
212 | val->intval = POWER_SUPPLY_STATUS_FULL; | |
213 | break; | |
214 | case POWER_SUPPLY_PROP_PRESENT: | |
215 | val->intval = battery->present; | |
216 | break; | |
217 | case POWER_SUPPLY_PROP_TECHNOLOGY: | |
218 | val->intval = acpi_battery_technology(battery); | |
219 | break; | |
220 | case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: | |
221 | val->intval = battery->design_voltage * | |
222 | acpi_battery_vscale(battery) * 1000; | |
223 | break; | |
224 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
225 | val->intval = battery->voltage_now * | |
226 | acpi_battery_vscale(battery) * 1000; | |
227 | break; | |
228 | case POWER_SUPPLY_PROP_CURRENT_NOW: | |
7faa144a AS |
229 | case POWER_SUPPLY_PROP_POWER_NOW: |
230 | val->intval = abs(battery->rate_now) * | |
94f6c086 AS |
231 | acpi_battery_ipscale(battery) * 1000; |
232 | break; | |
233 | case POWER_SUPPLY_PROP_CURRENT_AVG: | |
7faa144a AS |
234 | case POWER_SUPPLY_PROP_POWER_AVG: |
235 | val->intval = abs(battery->rate_avg) * | |
94f6c086 AS |
236 | acpi_battery_ipscale(battery) * 1000; |
237 | break; | |
238 | case POWER_SUPPLY_PROP_CAPACITY: | |
239 | val->intval = battery->state_of_charge; | |
240 | break; | |
241 | case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: | |
242 | case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: | |
243 | val->intval = battery->design_capacity * | |
244 | acpi_battery_scale(battery) * 1000; | |
245 | break; | |
246 | case POWER_SUPPLY_PROP_CHARGE_FULL: | |
247 | case POWER_SUPPLY_PROP_ENERGY_FULL: | |
248 | val->intval = battery->full_charge_capacity * | |
249 | acpi_battery_scale(battery) * 1000; | |
250 | break; | |
251 | case POWER_SUPPLY_PROP_CHARGE_NOW: | |
252 | case POWER_SUPPLY_PROP_ENERGY_NOW: | |
253 | val->intval = battery->capacity_now * | |
254 | acpi_battery_scale(battery) * 1000; | |
255 | break; | |
256 | case POWER_SUPPLY_PROP_TEMP: | |
257 | val->intval = battery->temp_now - 2730; // dK -> dC | |
258 | break; | |
259 | case POWER_SUPPLY_PROP_MODEL_NAME: | |
260 | val->strval = battery->device_name; | |
261 | break; | |
262 | case POWER_SUPPLY_PROP_MANUFACTURER: | |
263 | val->strval = battery->manufacturer_name; | |
264 | break; | |
265 | default: | |
266 | return -EINVAL; | |
267 | } | |
268 | return 0; | |
269 | } | |
270 | ||
271 | static enum power_supply_property sbs_ac_props[] = { | |
272 | POWER_SUPPLY_PROP_ONLINE, | |
273 | }; | |
274 | ||
275 | static enum power_supply_property sbs_charge_battery_props[] = { | |
276 | POWER_SUPPLY_PROP_STATUS, | |
277 | POWER_SUPPLY_PROP_PRESENT, | |
278 | POWER_SUPPLY_PROP_TECHNOLOGY, | |
279 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, | |
280 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
281 | POWER_SUPPLY_PROP_CURRENT_NOW, | |
282 | POWER_SUPPLY_PROP_CURRENT_AVG, | |
283 | POWER_SUPPLY_PROP_CAPACITY, | |
284 | POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, | |
285 | POWER_SUPPLY_PROP_CHARGE_FULL, | |
286 | POWER_SUPPLY_PROP_CHARGE_NOW, | |
287 | POWER_SUPPLY_PROP_TEMP, | |
288 | POWER_SUPPLY_PROP_MODEL_NAME, | |
289 | POWER_SUPPLY_PROP_MANUFACTURER, | |
290 | }; | |
291 | ||
292 | static enum power_supply_property sbs_energy_battery_props[] = { | |
293 | POWER_SUPPLY_PROP_STATUS, | |
294 | POWER_SUPPLY_PROP_PRESENT, | |
295 | POWER_SUPPLY_PROP_TECHNOLOGY, | |
296 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, | |
297 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
298 | POWER_SUPPLY_PROP_CURRENT_NOW, | |
299 | POWER_SUPPLY_PROP_CURRENT_AVG, | |
7faa144a AS |
300 | POWER_SUPPLY_PROP_POWER_NOW, |
301 | POWER_SUPPLY_PROP_POWER_AVG, | |
94f6c086 AS |
302 | POWER_SUPPLY_PROP_CAPACITY, |
303 | POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, | |
304 | POWER_SUPPLY_PROP_ENERGY_FULL, | |
305 | POWER_SUPPLY_PROP_ENERGY_NOW, | |
306 | POWER_SUPPLY_PROP_TEMP, | |
307 | POWER_SUPPLY_PROP_MODEL_NAME, | |
308 | POWER_SUPPLY_PROP_MANUFACTURER, | |
309 | }; | |
7faa144a | 310 | |
97749cd9 | 311 | #endif |
94f6c086 | 312 | |
db1c291a AS |
313 | /* -------------------------------------------------------------------------- |
314 | Smart Battery System Management | |
315 | -------------------------------------------------------------------------- */ | |
3f86b832 | 316 | |
db1c291a AS |
317 | struct acpi_battery_reader { |
318 | u8 command; /* command for battery */ | |
319 | u8 mode; /* word or block? */ | |
320 | size_t offset; /* offset inside struct acpi_sbs_battery */ | |
321 | }; | |
3f86b832 | 322 | |
db1c291a AS |
323 | static struct acpi_battery_reader info_readers[] = { |
324 | {0x01, SMBUS_READ_WORD, offsetof(struct acpi_battery, alarm_capacity)}, | |
325 | {0x03, SMBUS_READ_WORD, offsetof(struct acpi_battery, mode)}, | |
326 | {0x10, SMBUS_READ_WORD, offsetof(struct acpi_battery, full_charge_capacity)}, | |
327 | {0x17, SMBUS_READ_WORD, offsetof(struct acpi_battery, cycle_count)}, | |
328 | {0x18, SMBUS_READ_WORD, offsetof(struct acpi_battery, design_capacity)}, | |
329 | {0x19, SMBUS_READ_WORD, offsetof(struct acpi_battery, design_voltage)}, | |
330 | {0x1a, SMBUS_READ_WORD, offsetof(struct acpi_battery, spec)}, | |
331 | {0x1c, SMBUS_READ_WORD, offsetof(struct acpi_battery, serial_number)}, | |
332 | {0x20, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, manufacturer_name)}, | |
333 | {0x21, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, device_name)}, | |
334 | {0x22, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, device_chemistry)}, | |
335 | }; | |
3f86b832 | 336 | |
db1c291a AS |
337 | static struct acpi_battery_reader state_readers[] = { |
338 | {0x08, SMBUS_READ_WORD, offsetof(struct acpi_battery, temp_now)}, | |
339 | {0x09, SMBUS_READ_WORD, offsetof(struct acpi_battery, voltage_now)}, | |
7faa144a AS |
340 | {0x0a, SMBUS_READ_WORD, offsetof(struct acpi_battery, rate_now)}, |
341 | {0x0b, SMBUS_READ_WORD, offsetof(struct acpi_battery, rate_avg)}, | |
db1c291a AS |
342 | {0x0f, SMBUS_READ_WORD, offsetof(struct acpi_battery, capacity_now)}, |
343 | {0x0e, SMBUS_READ_WORD, offsetof(struct acpi_battery, state_of_charge)}, | |
344 | {0x16, SMBUS_READ_WORD, offsetof(struct acpi_battery, state)}, | |
345 | }; | |
3f86b832 | 346 | |
db1c291a | 347 | static int acpi_manager_get_info(struct acpi_sbs *sbs) |
3f86b832 | 348 | { |
3f86b832 | 349 | int result = 0; |
db1c291a | 350 | u16 battery_system_info; |
3f86b832 | 351 | |
db1c291a | 352 | result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER, |
94f6c086 | 353 | 0x04, (u8 *)&battery_system_info); |
db1c291a AS |
354 | if (!result) |
355 | sbs->batteries_supported = battery_system_info & 0x000f; | |
635227ee | 356 | return result; |
3f86b832 RT |
357 | } |
358 | ||
359 | static int acpi_battery_get_info(struct acpi_battery *battery) | |
360 | { | |
db1c291a | 361 | int i, result = 0; |
3f86b832 | 362 | |
db1c291a | 363 | for (i = 0; i < ARRAY_SIZE(info_readers); ++i) { |
94f6c086 AS |
364 | result = acpi_smbus_read(battery->sbs->hc, |
365 | info_readers[i].mode, | |
366 | ACPI_SBS_BATTERY, | |
367 | info_readers[i].command, | |
368 | (u8 *) battery + | |
369 | info_readers[i].offset); | |
db1c291a AS |
370 | if (result) |
371 | break; | |
3f86b832 | 372 | } |
635227ee | 373 | return result; |
3f86b832 RT |
374 | } |
375 | ||
3f86b832 RT |
376 | static int acpi_battery_get_state(struct acpi_battery *battery) |
377 | { | |
db1c291a | 378 | int i, result = 0; |
3f86b832 | 379 | |
94f6c086 AS |
380 | if (battery->update_time && |
381 | time_before(jiffies, battery->update_time + | |
db1c291a AS |
382 | msecs_to_jiffies(cache_time))) |
383 | return 0; | |
384 | for (i = 0; i < ARRAY_SIZE(state_readers); ++i) { | |
385 | result = acpi_smbus_read(battery->sbs->hc, | |
386 | state_readers[i].mode, | |
387 | ACPI_SBS_BATTERY, | |
388 | state_readers[i].command, | |
389 | (u8 *)battery + | |
390 | state_readers[i].offset); | |
391 | if (result) | |
3f86b832 | 392 | goto end; |
3f86b832 | 393 | } |
3f86b832 | 394 | end: |
db1c291a | 395 | battery->update_time = jiffies; |
635227ee | 396 | return result; |
3f86b832 RT |
397 | } |
398 | ||
db1c291a | 399 | static int acpi_battery_get_alarm(struct acpi_battery *battery) |
3f86b832 | 400 | { |
db1c291a AS |
401 | return acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, |
402 | ACPI_SBS_BATTERY, 0x01, | |
94f6c086 | 403 | (u8 *)&battery->alarm_capacity); |
3f86b832 RT |
404 | } |
405 | ||
db1c291a | 406 | static int acpi_battery_set_alarm(struct acpi_battery *battery) |
3f86b832 | 407 | { |
db1c291a | 408 | struct acpi_sbs *sbs = battery->sbs; |
94f6c086 AS |
409 | u16 value, sel = 1 << (battery->id + 12); |
410 | ||
411 | int ret; | |
412 | ||
3f86b832 | 413 | |
db1c291a | 414 | if (sbs->manager_present) { |
94f6c086 | 415 | ret = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER, |
db1c291a | 416 | 0x01, (u8 *)&value); |
94f6c086 AS |
417 | if (ret) |
418 | goto end; | |
419 | if ((value & 0xf000) != sel) { | |
420 | value &= 0x0fff; | |
421 | value |= sel; | |
422 | ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, | |
423 | ACPI_SBS_MANAGER, | |
424 | 0x01, (u8 *)&value, 2); | |
425 | if (ret) | |
426 | goto end; | |
427 | } | |
3f86b832 | 428 | } |
94f6c086 AS |
429 | ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, ACPI_SBS_BATTERY, |
430 | 0x01, (u8 *)&battery->alarm_capacity, 2); | |
431 | end: | |
432 | return ret; | |
3f86b832 RT |
433 | } |
434 | ||
435 | static int acpi_ac_get_present(struct acpi_sbs *sbs) | |
436 | { | |
db1c291a AS |
437 | int result; |
438 | u16 status; | |
3f86b832 | 439 | |
db1c291a AS |
440 | result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_CHARGER, |
441 | 0x13, (u8 *) & status); | |
442 | if (!result) | |
443 | sbs->charger_present = (status >> 15) & 0x1; | |
635227ee | 444 | return result; |
3f86b832 RT |
445 | } |
446 | ||
97749cd9 | 447 | #ifdef CONFIG_ACPI_SYSFS_POWER |
8bd95532 AS |
448 | static ssize_t acpi_battery_alarm_show(struct device *dev, |
449 | struct device_attribute *attr, | |
450 | char *buf) | |
451 | { | |
452 | struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev)); | |
453 | acpi_battery_get_alarm(battery); | |
454 | return sprintf(buf, "%d\n", battery->alarm_capacity * | |
455 | acpi_battery_scale(battery) * 1000); | |
456 | } | |
457 | ||
458 | static ssize_t acpi_battery_alarm_store(struct device *dev, | |
459 | struct device_attribute *attr, | |
460 | const char *buf, size_t count) | |
461 | { | |
462 | unsigned long x; | |
463 | struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev)); | |
464 | if (sscanf(buf, "%ld\n", &x) == 1) | |
465 | battery->alarm_capacity = x / | |
466 | (1000 * acpi_battery_scale(battery)); | |
467 | if (battery->present) | |
468 | acpi_battery_set_alarm(battery); | |
469 | return count; | |
470 | } | |
471 | ||
472 | static struct device_attribute alarm_attr = { | |
01e8ef11 | 473 | .attr = {.name = "alarm", .mode = 0644}, |
8bd95532 AS |
474 | .show = acpi_battery_alarm_show, |
475 | .store = acpi_battery_alarm_store, | |
476 | }; | |
97749cd9 | 477 | #endif |
8bd95532 | 478 | |
3f86b832 RT |
479 | /* -------------------------------------------------------------------------- |
480 | FS Interface (/proc/acpi) | |
481 | -------------------------------------------------------------------------- */ | |
482 | ||
fdcedbba | 483 | #ifdef CONFIG_ACPI_PROCFS_POWER |
3f86b832 | 484 | /* Generic Routines */ |
3f86b832 | 485 | static int |
db1c291a | 486 | acpi_sbs_add_fs(struct proc_dir_entry **dir, |
94f6c086 AS |
487 | struct proc_dir_entry *parent_dir, |
488 | char *dir_name, | |
070d8eb1 JE |
489 | const struct file_operations *info_fops, |
490 | const struct file_operations *state_fops, | |
491 | const struct file_operations *alarm_fops, void *data) | |
3f86b832 | 492 | { |
3f86b832 RT |
493 | if (!*dir) { |
494 | *dir = proc_mkdir(dir_name, parent_dir); | |
495 | if (!*dir) { | |
635227ee | 496 | return -ENODEV; |
3f86b832 | 497 | } |
3f86b832 RT |
498 | } |
499 | ||
500 | /* 'info' [R] */ | |
cf7acfab DL |
501 | if (info_fops) |
502 | proc_create_data(ACPI_SBS_FILE_INFO, S_IRUGO, *dir, | |
503 | info_fops, data); | |
3f86b832 RT |
504 | |
505 | /* 'state' [R] */ | |
cf7acfab DL |
506 | if (state_fops) |
507 | proc_create_data(ACPI_SBS_FILE_STATE, S_IRUGO, *dir, | |
508 | state_fops, data); | |
3f86b832 RT |
509 | |
510 | /* 'alarm' [R/W] */ | |
cf7acfab DL |
511 | if (alarm_fops) |
512 | proc_create_data(ACPI_SBS_FILE_ALARM, S_IRUGO, *dir, | |
513 | alarm_fops, data); | |
635227ee | 514 | return 0; |
3f86b832 RT |
515 | } |
516 | ||
517 | static void | |
db1c291a | 518 | acpi_sbs_remove_fs(struct proc_dir_entry **dir, |
3f86b832 RT |
519 | struct proc_dir_entry *parent_dir) |
520 | { | |
3f86b832 RT |
521 | if (*dir) { |
522 | remove_proc_entry(ACPI_SBS_FILE_INFO, *dir); | |
523 | remove_proc_entry(ACPI_SBS_FILE_STATE, *dir); | |
524 | remove_proc_entry(ACPI_SBS_FILE_ALARM, *dir); | |
525 | remove_proc_entry((*dir)->name, parent_dir); | |
526 | *dir = NULL; | |
527 | } | |
3f86b832 RT |
528 | } |
529 | ||
530 | /* Smart Battery Interface */ | |
3f86b832 RT |
531 | static struct proc_dir_entry *acpi_battery_dir = NULL; |
532 | ||
db1c291a AS |
533 | static inline char *acpi_battery_units(struct acpi_battery *battery) |
534 | { | |
5a21e4fe | 535 | return acpi_battery_mode(battery) ? " mW" : " mA"; |
db1c291a AS |
536 | } |
537 | ||
538 | ||
3f86b832 RT |
539 | static int acpi_battery_read_info(struct seq_file *seq, void *offset) |
540 | { | |
50dd0969 | 541 | struct acpi_battery *battery = seq->private; |
72206233 | 542 | struct acpi_sbs *sbs = battery->sbs; |
3f86b832 RT |
543 | int result = 0; |
544 | ||
db1c291a | 545 | mutex_lock(&sbs->lock); |
3f86b832 | 546 | |
db1c291a AS |
547 | seq_printf(seq, "present: %s\n", |
548 | (battery->present) ? "yes" : "no"); | |
549 | if (!battery->present) | |
72206233 | 550 | goto end; |
3f86b832 | 551 | |
5a21e4fe | 552 | seq_printf(seq, "design capacity: %i%sh\n", |
db1c291a AS |
553 | battery->design_capacity * acpi_battery_scale(battery), |
554 | acpi_battery_units(battery)); | |
5a21e4fe | 555 | seq_printf(seq, "last full capacity: %i%sh\n", |
db1c291a AS |
556 | battery->full_charge_capacity * acpi_battery_scale(battery), |
557 | acpi_battery_units(battery)); | |
3f86b832 | 558 | seq_printf(seq, "battery technology: rechargeable\n"); |
3f86b832 | 559 | seq_printf(seq, "design voltage: %i mV\n", |
db1c291a | 560 | battery->design_voltage * acpi_battery_vscale(battery)); |
3f86b832 RT |
561 | seq_printf(seq, "design capacity warning: unknown\n"); |
562 | seq_printf(seq, "design capacity low: unknown\n"); | |
563 | seq_printf(seq, "capacity granularity 1: unknown\n"); | |
564 | seq_printf(seq, "capacity granularity 2: unknown\n"); | |
db1c291a | 565 | seq_printf(seq, "model number: %s\n", battery->device_name); |
3f86b832 | 566 | seq_printf(seq, "serial number: %i\n", |
89862e3b | 567 | battery->serial_number); |
3f86b832 | 568 | seq_printf(seq, "battery type: %s\n", |
89862e3b | 569 | battery->device_chemistry); |
3f86b832 | 570 | seq_printf(seq, "OEM info: %s\n", |
89862e3b | 571 | battery->manufacturer_name); |
3f86b832 | 572 | end: |
db1c291a | 573 | mutex_unlock(&sbs->lock); |
635227ee | 574 | return result; |
3f86b832 RT |
575 | } |
576 | ||
577 | static int acpi_battery_info_open_fs(struct inode *inode, struct file *file) | |
578 | { | |
579 | return single_open(file, acpi_battery_read_info, PDE(inode)->data); | |
580 | } | |
581 | ||
582 | static int acpi_battery_read_state(struct seq_file *seq, void *offset) | |
583 | { | |
72206233 VL |
584 | struct acpi_battery *battery = seq->private; |
585 | struct acpi_sbs *sbs = battery->sbs; | |
5a21e4fe | 586 | int rate; |
3f86b832 | 587 | |
db1c291a AS |
588 | mutex_lock(&sbs->lock); |
589 | seq_printf(seq, "present: %s\n", | |
590 | (battery->present) ? "yes" : "no"); | |
591 | if (!battery->present) | |
3f86b832 | 592 | goto end; |
3f86b832 | 593 | |
db1c291a AS |
594 | acpi_battery_get_state(battery); |
595 | seq_printf(seq, "capacity state: %s\n", | |
596 | (battery->state & 0x0010) ? "critical" : "ok"); | |
597 | seq_printf(seq, "charging state: %s\n", | |
7faa144a AS |
598 | (battery->rate_now < 0) ? "discharging" : |
599 | ((battery->rate_now > 0) ? "charging" : "charged")); | |
600 | rate = abs(battery->rate_now) * acpi_battery_ipscale(battery); | |
5a21e4fe AS |
601 | rate *= (acpi_battery_mode(battery))?(battery->voltage_now * |
602 | acpi_battery_vscale(battery)/1000):1; | |
603 | seq_printf(seq, "present rate: %d%s\n", rate, | |
604 | acpi_battery_units(battery)); | |
605 | seq_printf(seq, "remaining capacity: %i%sh\n", | |
db1c291a AS |
606 | battery->capacity_now * acpi_battery_scale(battery), |
607 | acpi_battery_units(battery)); | |
3f86b832 | 608 | seq_printf(seq, "present voltage: %i mV\n", |
db1c291a | 609 | battery->voltage_now * acpi_battery_vscale(battery)); |
3f86b832 RT |
610 | |
611 | end: | |
db1c291a | 612 | mutex_unlock(&sbs->lock); |
5a21e4fe | 613 | return 0; |
3f86b832 RT |
614 | } |
615 | ||
616 | static int acpi_battery_state_open_fs(struct inode *inode, struct file *file) | |
617 | { | |
618 | return single_open(file, acpi_battery_read_state, PDE(inode)->data); | |
619 | } | |
620 | ||
621 | static int acpi_battery_read_alarm(struct seq_file *seq, void *offset) | |
622 | { | |
50dd0969 | 623 | struct acpi_battery *battery = seq->private; |
72206233 | 624 | struct acpi_sbs *sbs = battery->sbs; |
3f86b832 | 625 | int result = 0; |
3f86b832 | 626 | |
db1c291a | 627 | mutex_lock(&sbs->lock); |
3f86b832 | 628 | |
89862e3b | 629 | if (!battery->present) { |
3f86b832 RT |
630 | seq_printf(seq, "present: no\n"); |
631 | goto end; | |
632 | } | |
633 | ||
db1c291a | 634 | acpi_battery_get_alarm(battery); |
3f86b832 | 635 | seq_printf(seq, "alarm: "); |
db1c291a | 636 | if (battery->alarm_capacity) |
5a21e4fe | 637 | seq_printf(seq, "%i%sh\n", |
db1c291a AS |
638 | battery->alarm_capacity * |
639 | acpi_battery_scale(battery), | |
640 | acpi_battery_units(battery)); | |
641 | else | |
3f86b832 | 642 | seq_printf(seq, "disabled\n"); |
3f86b832 | 643 | end: |
db1c291a | 644 | mutex_unlock(&sbs->lock); |
635227ee | 645 | return result; |
3f86b832 RT |
646 | } |
647 | ||
648 | static ssize_t | |
649 | acpi_battery_write_alarm(struct file *file, const char __user * buffer, | |
650 | size_t count, loff_t * ppos) | |
651 | { | |
50dd0969 JE |
652 | struct seq_file *seq = file->private_data; |
653 | struct acpi_battery *battery = seq->private; | |
72206233 | 654 | struct acpi_sbs *sbs = battery->sbs; |
3f86b832 | 655 | char alarm_string[12] = { '\0' }; |
db1c291a AS |
656 | int result = 0; |
657 | mutex_lock(&sbs->lock); | |
89862e3b | 658 | if (!battery->present) { |
3f86b832 RT |
659 | result = -ENODEV; |
660 | goto end; | |
661 | } | |
3f86b832 RT |
662 | if (count > sizeof(alarm_string) - 1) { |
663 | result = -EINVAL; | |
664 | goto end; | |
665 | } | |
3f86b832 RT |
666 | if (copy_from_user(alarm_string, buffer, count)) { |
667 | result = -EFAULT; | |
668 | goto end; | |
669 | } | |
3f86b832 | 670 | alarm_string[count] = 0; |
94f6c086 AS |
671 | battery->alarm_capacity = simple_strtoul(alarm_string, NULL, 0) / |
672 | acpi_battery_scale(battery); | |
db1c291a | 673 | acpi_battery_set_alarm(battery); |
3f86b832 | 674 | end: |
db1c291a AS |
675 | mutex_unlock(&sbs->lock); |
676 | if (result) | |
635227ee | 677 | return result; |
db1c291a | 678 | return count; |
3f86b832 RT |
679 | } |
680 | ||
681 | static int acpi_battery_alarm_open_fs(struct inode *inode, struct file *file) | |
682 | { | |
683 | return single_open(file, acpi_battery_read_alarm, PDE(inode)->data); | |
684 | } | |
685 | ||
070d8eb1 | 686 | static const struct file_operations acpi_battery_info_fops = { |
3f86b832 RT |
687 | .open = acpi_battery_info_open_fs, |
688 | .read = seq_read, | |
689 | .llseek = seq_lseek, | |
690 | .release = single_release, | |
691 | .owner = THIS_MODULE, | |
692 | }; | |
693 | ||
070d8eb1 | 694 | static const struct file_operations acpi_battery_state_fops = { |
3f86b832 RT |
695 | .open = acpi_battery_state_open_fs, |
696 | .read = seq_read, | |
697 | .llseek = seq_lseek, | |
698 | .release = single_release, | |
699 | .owner = THIS_MODULE, | |
700 | }; | |
701 | ||
070d8eb1 | 702 | static const struct file_operations acpi_battery_alarm_fops = { |
3f86b832 RT |
703 | .open = acpi_battery_alarm_open_fs, |
704 | .read = seq_read, | |
705 | .write = acpi_battery_write_alarm, | |
706 | .llseek = seq_lseek, | |
707 | .release = single_release, | |
708 | .owner = THIS_MODULE, | |
709 | }; | |
710 | ||
711 | /* Legacy AC Adapter Interface */ | |
712 | ||
713 | static struct proc_dir_entry *acpi_ac_dir = NULL; | |
714 | ||
715 | static int acpi_ac_read_state(struct seq_file *seq, void *offset) | |
716 | { | |
3f86b832 | 717 | |
db1c291a | 718 | struct acpi_sbs *sbs = seq->private; |
3f86b832 | 719 | |
db1c291a | 720 | mutex_lock(&sbs->lock); |
3f86b832 RT |
721 | |
722 | seq_printf(seq, "state: %s\n", | |
89862e3b | 723 | sbs->charger_present ? "on-line" : "off-line"); |
3f86b832 | 724 | |
db1c291a | 725 | mutex_unlock(&sbs->lock); |
635227ee | 726 | return 0; |
3f86b832 RT |
727 | } |
728 | ||
729 | static int acpi_ac_state_open_fs(struct inode *inode, struct file *file) | |
730 | { | |
731 | return single_open(file, acpi_ac_read_state, PDE(inode)->data); | |
732 | } | |
733 | ||
070d8eb1 | 734 | static const struct file_operations acpi_ac_state_fops = { |
3f86b832 RT |
735 | .open = acpi_ac_state_open_fs, |
736 | .read = seq_read, | |
737 | .llseek = seq_lseek, | |
738 | .release = single_release, | |
739 | .owner = THIS_MODULE, | |
740 | }; | |
741 | ||
66e4b72b AS |
742 | #endif |
743 | ||
3f86b832 RT |
744 | /* -------------------------------------------------------------------------- |
745 | Driver Interface | |
746 | -------------------------------------------------------------------------- */ | |
db1c291a | 747 | static int acpi_battery_read(struct acpi_battery *battery) |
3f86b832 | 748 | { |
db1c291a AS |
749 | int result = 0, saved_present = battery->present; |
750 | u16 state; | |
3f86b832 | 751 | |
db1c291a AS |
752 | if (battery->sbs->manager_present) { |
753 | result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, | |
754 | ACPI_SBS_MANAGER, 0x01, (u8 *)&state); | |
755 | if (!result) | |
756 | battery->present = state & (1 << battery->id); | |
757 | state &= 0x0fff; | |
758 | state |= 1 << (battery->id + 12); | |
759 | acpi_smbus_write(battery->sbs->hc, SMBUS_WRITE_WORD, | |
760 | ACPI_SBS_MANAGER, 0x01, (u8 *)&state, 2); | |
761 | } else if (battery->id == 0) | |
762 | battery->present = 1; | |
763 | if (result || !battery->present) | |
764 | return result; | |
3f86b832 | 765 | |
db1c291a AS |
766 | if (saved_present != battery->present) { |
767 | battery->update_time = 0; | |
768 | result = acpi_battery_get_info(battery); | |
769 | if (result) | |
770 | return result; | |
771 | } | |
772 | result = acpi_battery_get_state(battery); | |
773 | return result; | |
774 | } | |
3f86b832 | 775 | |
94f6c086 | 776 | /* Smart Battery */ |
db1c291a AS |
777 | static int acpi_battery_add(struct acpi_sbs *sbs, int id) |
778 | { | |
db1c291a | 779 | struct acpi_battery *battery = &sbs->battery[id]; |
94f6c086 AS |
780 | int result; |
781 | ||
3f86b832 RT |
782 | battery->id = id; |
783 | battery->sbs = sbs; | |
db1c291a AS |
784 | result = acpi_battery_read(battery); |
785 | if (result) | |
786 | return result; | |
3f86b832 | 787 | |
db1c291a | 788 | sprintf(battery->name, ACPI_BATTERY_DIR_NAME, id); |
fdcedbba | 789 | #ifdef CONFIG_ACPI_PROCFS_POWER |
db1c291a AS |
790 | acpi_sbs_add_fs(&battery->proc_entry, acpi_battery_dir, |
791 | battery->name, &acpi_battery_info_fops, | |
792 | &acpi_battery_state_fops, &acpi_battery_alarm_fops, | |
793 | battery); | |
66e4b72b | 794 | #endif |
97749cd9 | 795 | #ifdef CONFIG_ACPI_SYSFS_POWER |
94f6c086 AS |
796 | battery->bat.name = battery->name; |
797 | battery->bat.type = POWER_SUPPLY_TYPE_BATTERY; | |
798 | if (!acpi_battery_mode(battery)) { | |
799 | battery->bat.properties = sbs_charge_battery_props; | |
800 | battery->bat.num_properties = | |
801 | ARRAY_SIZE(sbs_charge_battery_props); | |
802 | } else { | |
803 | battery->bat.properties = sbs_energy_battery_props; | |
804 | battery->bat.num_properties = | |
805 | ARRAY_SIZE(sbs_energy_battery_props); | |
806 | } | |
807 | battery->bat.get_property = acpi_sbs_battery_get_property; | |
808 | result = power_supply_register(&sbs->device->dev, &battery->bat); | |
037cbc63 JG |
809 | if (result) |
810 | goto end; | |
811 | result = device_create_file(battery->bat.dev, &alarm_attr); | |
812 | if (result) | |
813 | goto end; | |
814 | battery->have_sysfs_alarm = 1; | |
815 | end: | |
97749cd9 | 816 | #endif |
72206233 | 817 | printk(KERN_INFO PREFIX "%s [%s]: Battery Slot [%s] (battery %s)\n", |
db1c291a | 818 | ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device), |
bbafbecb | 819 | battery->name, battery->present ? "present" : "absent"); |
635227ee | 820 | return result; |
3f86b832 RT |
821 | } |
822 | ||
823 | static void acpi_battery_remove(struct acpi_sbs *sbs, int id) | |
824 | { | |
037cbc63 | 825 | struct acpi_battery *battery = &sbs->battery[id]; |
97749cd9 | 826 | #ifdef CONFIG_ACPI_SYSFS_POWER |
037cbc63 JG |
827 | if (battery->bat.dev) { |
828 | if (battery->have_sysfs_alarm) | |
829 | device_remove_file(battery->bat.dev, &alarm_attr); | |
830 | power_supply_unregister(&battery->bat); | |
3f86b832 | 831 | } |
97749cd9 | 832 | #endif |
c2e46d2e | 833 | #ifdef CONFIG_ACPI_PROCFS_POWER |
037cbc63 JG |
834 | if (battery->proc_entry) |
835 | acpi_sbs_remove_fs(&battery->proc_entry, acpi_battery_dir); | |
66e4b72b | 836 | #endif |
3f86b832 RT |
837 | } |
838 | ||
db1c291a | 839 | static int acpi_charger_add(struct acpi_sbs *sbs) |
3f86b832 RT |
840 | { |
841 | int result; | |
842 | ||
3f86b832 | 843 | result = acpi_ac_get_present(sbs); |
db1c291a | 844 | if (result) |
3f86b832 | 845 | goto end; |
fdcedbba | 846 | #ifdef CONFIG_ACPI_PROCFS_POWER |
db1c291a AS |
847 | result = acpi_sbs_add_fs(&sbs->charger_entry, acpi_ac_dir, |
848 | ACPI_AC_DIR_NAME, NULL, | |
849 | &acpi_ac_state_fops, NULL, sbs); | |
850 | if (result) | |
3f86b832 | 851 | goto end; |
66e4b72b | 852 | #endif |
97749cd9 | 853 | #ifdef CONFIG_ACPI_SYSFS_POWER |
94f6c086 AS |
854 | sbs->charger.name = "sbs-charger"; |
855 | sbs->charger.type = POWER_SUPPLY_TYPE_MAINS; | |
856 | sbs->charger.properties = sbs_ac_props; | |
857 | sbs->charger.num_properties = ARRAY_SIZE(sbs_ac_props); | |
858 | sbs->charger.get_property = sbs_get_ac_property; | |
859 | power_supply_register(&sbs->device->dev, &sbs->charger); | |
97749cd9 | 860 | #endif |
72206233 VL |
861 | printk(KERN_INFO PREFIX "%s [%s]: AC Adapter [%s] (%s)\n", |
862 | ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device), | |
89862e3b | 863 | ACPI_AC_DIR_NAME, sbs->charger_present ? "on-line" : "off-line"); |
3f86b832 | 864 | end: |
635227ee | 865 | return result; |
3f86b832 RT |
866 | } |
867 | ||
db1c291a | 868 | static void acpi_charger_remove(struct acpi_sbs *sbs) |
3f86b832 | 869 | { |
97749cd9 | 870 | #ifdef CONFIG_ACPI_SYSFS_POWER |
94f6c086 AS |
871 | if (sbs->charger.dev) |
872 | power_supply_unregister(&sbs->charger); | |
97749cd9 | 873 | #endif |
fdcedbba | 874 | #ifdef CONFIG_ACPI_PROCFS_POWER |
db1c291a AS |
875 | if (sbs->charger_entry) |
876 | acpi_sbs_remove_fs(&sbs->charger_entry, acpi_ac_dir); | |
66e4b72b | 877 | #endif |
3f86b832 RT |
878 | } |
879 | ||
e5685b9d | 880 | static void acpi_sbs_callback(void *context) |
3f86b832 | 881 | { |
db1c291a AS |
882 | int id; |
883 | struct acpi_sbs *sbs = context; | |
884 | struct acpi_battery *bat; | |
885 | u8 saved_charger_state = sbs->charger_present; | |
886 | u8 saved_battery_state; | |
887 | acpi_ac_get_present(sbs); | |
888 | if (sbs->charger_present != saved_charger_state) { | |
94f6c086 | 889 | #ifdef CONFIG_ACPI_PROC_EVENT |
db1c291a AS |
890 | acpi_bus_generate_proc_event4(ACPI_AC_CLASS, ACPI_AC_DIR_NAME, |
891 | ACPI_SBS_NOTIFY_STATUS, | |
892 | sbs->charger_present); | |
94f6c086 | 893 | #endif |
97749cd9 | 894 | #ifdef CONFIG_ACPI_SYSFS_POWER |
94f6c086 | 895 | kobject_uevent(&sbs->charger.dev->kobj, KOBJ_CHANGE); |
97749cd9 | 896 | #endif |
3f86b832 | 897 | } |
db1c291a AS |
898 | if (sbs->manager_present) { |
899 | for (id = 0; id < MAX_SBS_BAT; ++id) { | |
900 | if (!(sbs->batteries_supported & (1 << id))) | |
901 | continue; | |
902 | bat = &sbs->battery[id]; | |
903 | saved_battery_state = bat->present; | |
904 | acpi_battery_read(bat); | |
905 | if (saved_battery_state == bat->present) | |
906 | continue; | |
94f6c086 | 907 | #ifdef CONFIG_ACPI_PROC_EVENT |
db1c291a AS |
908 | acpi_bus_generate_proc_event4(ACPI_BATTERY_CLASS, |
909 | bat->name, | |
910 | ACPI_SBS_NOTIFY_STATUS, | |
911 | bat->present); | |
94f6c086 | 912 | #endif |
97749cd9 | 913 | #ifdef CONFIG_ACPI_SYSFS_POWER |
94f6c086 | 914 | kobject_uevent(&bat->bat.dev->kobj, KOBJ_CHANGE); |
97749cd9 | 915 | #endif |
3f86b832 | 916 | } |
3f86b832 | 917 | } |
3f86b832 RT |
918 | } |
919 | ||
db1c291a | 920 | static int acpi_sbs_remove(struct acpi_device *device, int type); |
3f86b832 RT |
921 | |
922 | static int acpi_sbs_add(struct acpi_device *device) | |
923 | { | |
db1c291a AS |
924 | struct acpi_sbs *sbs; |
925 | int result = 0; | |
6d15702c | 926 | int id; |
3f86b832 | 927 | |
36bcbec7 | 928 | sbs = kzalloc(sizeof(struct acpi_sbs), GFP_KERNEL); |
3f86b832 | 929 | if (!sbs) { |
72206233 VL |
930 | result = -ENOMEM; |
931 | goto end; | |
3f86b832 | 932 | } |
3f86b832 | 933 | |
db1c291a | 934 | mutex_init(&sbs->lock); |
72206233 | 935 | |
91087dfa | 936 | sbs->hc = acpi_driver_data(device->parent); |
db1c291a | 937 | sbs->device = device; |
3f86b832 RT |
938 | strcpy(acpi_device_name(device), ACPI_SBS_DEVICE_NAME); |
939 | strcpy(acpi_device_class(device), ACPI_SBS_CLASS); | |
db89b4f0 | 940 | device->driver_data = sbs; |
3f86b832 | 941 | |
db1c291a | 942 | result = acpi_charger_add(sbs); |
72206233 VL |
943 | if (result) |
944 | goto end; | |
3f86b832 | 945 | |
db1c291a AS |
946 | result = acpi_manager_get_info(sbs); |
947 | if (!result) { | |
948 | sbs->manager_present = 1; | |
949 | for (id = 0; id < MAX_SBS_BAT; ++id) | |
950 | if ((sbs->batteries_supported & (1 << id))) | |
951 | acpi_battery_add(sbs, id); | |
952 | } else | |
953 | acpi_battery_add(sbs, 0); | |
954 | acpi_smbus_register_callback(sbs->hc, acpi_sbs_callback, sbs); | |
3f86b832 | 955 | end: |
db1c291a AS |
956 | if (result) |
957 | acpi_sbs_remove(device, 0); | |
635227ee | 958 | return result; |
3f86b832 RT |
959 | } |
960 | ||
72206233 | 961 | static int acpi_sbs_remove(struct acpi_device *device, int type) |
3f86b832 | 962 | { |
cece9014 | 963 | struct acpi_sbs *sbs; |
3f86b832 RT |
964 | int id; |
965 | ||
db1c291a | 966 | if (!device) |
963497c1 | 967 | return -EINVAL; |
72206233 | 968 | sbs = acpi_driver_data(device); |
db1c291a | 969 | if (!sbs) |
635227ee | 970 | return -EINVAL; |
db1c291a AS |
971 | mutex_lock(&sbs->lock); |
972 | acpi_smbus_unregister_callback(sbs->hc); | |
973 | for (id = 0; id < MAX_SBS_BAT; ++id) | |
3f86b832 | 974 | acpi_battery_remove(sbs, id); |
db1c291a AS |
975 | acpi_charger_remove(sbs); |
976 | mutex_unlock(&sbs->lock); | |
977 | mutex_destroy(&sbs->lock); | |
3f86b832 | 978 | kfree(sbs); |
635227ee | 979 | return 0; |
3f86b832 RT |
980 | } |
981 | ||
72206233 VL |
982 | static void acpi_sbs_rmdirs(void) |
983 | { | |
fdcedbba | 984 | #ifdef CONFIG_ACPI_PROCFS_POWER |
72206233 VL |
985 | if (acpi_ac_dir) { |
986 | acpi_unlock_ac_dir(acpi_ac_dir); | |
987 | acpi_ac_dir = NULL; | |
988 | } | |
989 | if (acpi_battery_dir) { | |
990 | acpi_unlock_battery_dir(acpi_battery_dir); | |
991 | acpi_battery_dir = NULL; | |
992 | } | |
66e4b72b | 993 | #endif |
72206233 VL |
994 | } |
995 | ||
996 | static int acpi_sbs_resume(struct acpi_device *device) | |
997 | { | |
998 | struct acpi_sbs *sbs; | |
72206233 VL |
999 | if (!device) |
1000 | return -EINVAL; | |
72206233 | 1001 | sbs = device->driver_data; |
db1c291a | 1002 | acpi_sbs_callback(sbs); |
72206233 VL |
1003 | return 0; |
1004 | } | |
1005 | ||
94f6c086 AS |
1006 | static struct acpi_driver acpi_sbs_driver = { |
1007 | .name = "sbs", | |
1008 | .class = ACPI_SBS_CLASS, | |
1009 | .ids = sbs_device_ids, | |
1010 | .ops = { | |
1011 | .add = acpi_sbs_add, | |
1012 | .remove = acpi_sbs_remove, | |
1013 | .resume = acpi_sbs_resume, | |
1014 | }, | |
1015 | }; | |
1016 | ||
3f86b832 RT |
1017 | static int __init acpi_sbs_init(void) |
1018 | { | |
1019 | int result = 0; | |
1020 | ||
b20d2aeb LB |
1021 | if (acpi_disabled) |
1022 | return -ENODEV; | |
fdcedbba | 1023 | #ifdef CONFIG_ACPI_PROCFS_POWER |
3f86b832 | 1024 | acpi_ac_dir = acpi_lock_ac_dir(); |
94f6c086 | 1025 | if (!acpi_ac_dir) |
635227ee | 1026 | return -ENODEV; |
3f86b832 RT |
1027 | acpi_battery_dir = acpi_lock_battery_dir(); |
1028 | if (!acpi_battery_dir) { | |
72206233 | 1029 | acpi_sbs_rmdirs(); |
635227ee | 1030 | return -ENODEV; |
3f86b832 | 1031 | } |
66e4b72b | 1032 | #endif |
3f86b832 RT |
1033 | result = acpi_bus_register_driver(&acpi_sbs_driver); |
1034 | if (result < 0) { | |
72206233 | 1035 | acpi_sbs_rmdirs(); |
635227ee | 1036 | return -ENODEV; |
3f86b832 | 1037 | } |
635227ee | 1038 | return 0; |
3f86b832 RT |
1039 | } |
1040 | ||
1041 | static void __exit acpi_sbs_exit(void) | |
1042 | { | |
3f86b832 | 1043 | acpi_bus_unregister_driver(&acpi_sbs_driver); |
72206233 | 1044 | acpi_sbs_rmdirs(); |
635227ee | 1045 | return; |
3f86b832 RT |
1046 | } |
1047 | ||
1048 | module_init(acpi_sbs_init); | |
1049 | module_exit(acpi_sbs_exit); |