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> | |
5a0e3ad6 | 28 | #include <linux/slab.h> |
3f86b832 RT |
29 | #include <linux/module.h> |
30 | #include <linux/moduleparam.h> | |
31 | #include <linux/kernel.h> | |
94f6c086 | 32 | |
3f86b832 | 33 | #include <linux/acpi.h> |
6d15702c | 34 | #include <linux/timer.h> |
72206233 | 35 | #include <linux/jiffies.h> |
3f86b832 | 36 | #include <linux/delay.h> |
94f6c086 AS |
37 | #include <linux/power_supply.h> |
38 | ||
91087dfa | 39 | #include "sbshc.h" |
f03be352 | 40 | #include "battery.h" |
91087dfa | 41 | |
a192a958 LB |
42 | #define PREFIX "ACPI: " |
43 | ||
3f86b832 RT |
44 | #define ACPI_SBS_CLASS "sbs" |
45 | #define ACPI_AC_CLASS "ac_adapter" | |
3f86b832 RT |
46 | #define ACPI_SBS_DEVICE_NAME "Smart Battery System" |
47 | #define ACPI_SBS_FILE_INFO "info" | |
48 | #define ACPI_SBS_FILE_STATE "state" | |
49 | #define ACPI_SBS_FILE_ALARM "alarm" | |
50 | #define ACPI_BATTERY_DIR_NAME "BAT%i" | |
51 | #define ACPI_AC_DIR_NAME "AC0" | |
3f86b832 | 52 | |
db1c291a AS |
53 | #define ACPI_SBS_NOTIFY_STATUS 0x80 |
54 | #define ACPI_SBS_NOTIFY_INFO 0x81 | |
3f86b832 | 55 | |
db1c291a | 56 | MODULE_AUTHOR("Alexey Starikovskiy <astarikovskiy@suse.de>"); |
3f86b832 RT |
57 | MODULE_DESCRIPTION("Smart Battery System ACPI interface driver"); |
58 | MODULE_LICENSE("GPL"); | |
59 | ||
db1c291a AS |
60 | static unsigned int cache_time = 1000; |
61 | module_param(cache_time, uint, 0644); | |
62 | MODULE_PARM_DESC(cache_time, "cache time in milliseconds"); | |
6d15702c | 63 | |
db1c291a | 64 | #define MAX_SBS_BAT 4 |
6d15702c VL |
65 | #define ACPI_SBS_BLOCK_MAX 32 |
66 | ||
1ba90e3a | 67 | static const struct acpi_device_id sbs_device_ids[] = { |
91087dfa | 68 | {"ACPI0002", 0}, |
1ba90e3a TR |
69 | {"", 0}, |
70 | }; | |
71 | MODULE_DEVICE_TABLE(acpi, sbs_device_ids); | |
72 | ||
3f86b832 | 73 | struct acpi_battery { |
94f6c086 | 74 | struct power_supply bat; |
3f86b832 | 75 | struct acpi_sbs *sbs; |
db1c291a AS |
76 | unsigned long update_time; |
77 | char name[8]; | |
89862e3b AS |
78 | char manufacturer_name[ACPI_SBS_BLOCK_MAX]; |
79 | char device_name[ACPI_SBS_BLOCK_MAX]; | |
80 | char device_chemistry[ACPI_SBS_BLOCK_MAX]; | |
94f6c086 | 81 | u16 alarm_capacity; |
89862e3b AS |
82 | u16 full_charge_capacity; |
83 | u16 design_capacity; | |
84 | u16 design_voltage; | |
85 | u16 serial_number; | |
db1c291a AS |
86 | u16 cycle_count; |
87 | u16 temp_now; | |
89862e3b | 88 | u16 voltage_now; |
7faa144a AS |
89 | s16 rate_now; |
90 | s16 rate_avg; | |
89862e3b | 91 | u16 capacity_now; |
db1c291a | 92 | u16 state_of_charge; |
89862e3b | 93 | u16 state; |
89862e3b | 94 | u16 mode; |
db1c291a | 95 | u16 spec; |
89862e3b | 96 | u8 id; |
89862e3b | 97 | u8 present:1; |
037cbc63 | 98 | u8 have_sysfs_alarm:1; |
3f86b832 RT |
99 | }; |
100 | ||
497888cf | 101 | #define to_acpi_battery(x) container_of(x, struct acpi_battery, bat) |
94f6c086 | 102 | |
3f86b832 | 103 | struct acpi_sbs { |
94f6c086 | 104 | struct power_supply charger; |
3f86b832 | 105 | struct acpi_device *device; |
91087dfa | 106 | struct acpi_smb_hc *hc; |
db1c291a | 107 | struct mutex lock; |
3f86b832 | 108 | struct acpi_battery battery[MAX_SBS_BAT]; |
db1c291a | 109 | u8 batteries_supported:4; |
89862e3b AS |
110 | u8 manager_present:1; |
111 | u8 charger_present:1; | |
3f86b832 RT |
112 | }; |
113 | ||
94f6c086 AS |
114 | #define to_acpi_sbs(x) container_of(x, struct acpi_sbs, charger) |
115 | ||
51fac838 | 116 | static int acpi_sbs_remove(struct acpi_device *device); |
1dd5c715 LT |
117 | static int acpi_battery_get_state(struct acpi_battery *battery); |
118 | ||
db1c291a | 119 | static inline int battery_scale(int log) |
72206233 | 120 | { |
db1c291a AS |
121 | int scale = 1; |
122 | while (log--) | |
123 | scale *= 10; | |
124 | return scale; | |
72206233 VL |
125 | } |
126 | ||
db1c291a | 127 | static inline int acpi_battery_vscale(struct acpi_battery *battery) |
72206233 | 128 | { |
db1c291a | 129 | return battery_scale((battery->spec & 0x0f00) >> 8); |
72206233 VL |
130 | } |
131 | ||
db1c291a | 132 | static inline int acpi_battery_ipscale(struct acpi_battery *battery) |
72206233 | 133 | { |
db1c291a | 134 | return battery_scale((battery->spec & 0xf000) >> 12); |
72206233 VL |
135 | } |
136 | ||
db1c291a | 137 | static inline int acpi_battery_mode(struct acpi_battery *battery) |
72206233 | 138 | { |
db1c291a | 139 | return (battery->mode & 0x8000); |
72206233 | 140 | } |
3f86b832 | 141 | |
db1c291a | 142 | static inline int acpi_battery_scale(struct acpi_battery *battery) |
3f86b832 | 143 | { |
db1c291a AS |
144 | return (acpi_battery_mode(battery) ? 10 : 1) * |
145 | acpi_battery_ipscale(battery); | |
3f86b832 RT |
146 | } |
147 | ||
94f6c086 AS |
148 | static int sbs_get_ac_property(struct power_supply *psy, |
149 | enum power_supply_property psp, | |
150 | union power_supply_propval *val) | |
151 | { | |
152 | struct acpi_sbs *sbs = to_acpi_sbs(psy); | |
153 | switch (psp) { | |
154 | case POWER_SUPPLY_PROP_ONLINE: | |
155 | val->intval = sbs->charger_present; | |
156 | break; | |
157 | default: | |
158 | return -EINVAL; | |
159 | } | |
160 | return 0; | |
161 | } | |
162 | ||
163 | static int acpi_battery_technology(struct acpi_battery *battery) | |
164 | { | |
165 | if (!strcasecmp("NiCd", battery->device_chemistry)) | |
166 | return POWER_SUPPLY_TECHNOLOGY_NiCd; | |
167 | if (!strcasecmp("NiMH", battery->device_chemistry)) | |
168 | return POWER_SUPPLY_TECHNOLOGY_NiMH; | |
169 | if (!strcasecmp("LION", battery->device_chemistry)) | |
170 | return POWER_SUPPLY_TECHNOLOGY_LION; | |
171 | if (!strcasecmp("LiP", battery->device_chemistry)) | |
172 | return POWER_SUPPLY_TECHNOLOGY_LIPO; | |
173 | return POWER_SUPPLY_TECHNOLOGY_UNKNOWN; | |
174 | } | |
175 | ||
176 | static int acpi_sbs_battery_get_property(struct power_supply *psy, | |
177 | enum power_supply_property psp, | |
178 | union power_supply_propval *val) | |
179 | { | |
180 | struct acpi_battery *battery = to_acpi_battery(psy); | |
181 | ||
182 | if ((!battery->present) && psp != POWER_SUPPLY_PROP_PRESENT) | |
183 | return -ENODEV; | |
1dd5c715 LT |
184 | |
185 | acpi_battery_get_state(battery); | |
94f6c086 AS |
186 | switch (psp) { |
187 | case POWER_SUPPLY_PROP_STATUS: | |
7faa144a | 188 | if (battery->rate_now < 0) |
94f6c086 | 189 | val->intval = POWER_SUPPLY_STATUS_DISCHARGING; |
7faa144a | 190 | else if (battery->rate_now > 0) |
94f6c086 AS |
191 | val->intval = POWER_SUPPLY_STATUS_CHARGING; |
192 | else | |
193 | val->intval = POWER_SUPPLY_STATUS_FULL; | |
194 | break; | |
195 | case POWER_SUPPLY_PROP_PRESENT: | |
196 | val->intval = battery->present; | |
197 | break; | |
198 | case POWER_SUPPLY_PROP_TECHNOLOGY: | |
199 | val->intval = acpi_battery_technology(battery); | |
200 | break; | |
16698857 AS |
201 | case POWER_SUPPLY_PROP_CYCLE_COUNT: |
202 | val->intval = battery->cycle_count; | |
203 | break; | |
94f6c086 AS |
204 | case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: |
205 | val->intval = battery->design_voltage * | |
206 | acpi_battery_vscale(battery) * 1000; | |
207 | break; | |
208 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
209 | val->intval = battery->voltage_now * | |
210 | acpi_battery_vscale(battery) * 1000; | |
211 | break; | |
212 | case POWER_SUPPLY_PROP_CURRENT_NOW: | |
7faa144a AS |
213 | case POWER_SUPPLY_PROP_POWER_NOW: |
214 | val->intval = abs(battery->rate_now) * | |
94f6c086 | 215 | acpi_battery_ipscale(battery) * 1000; |
e4108292 LT |
216 | val->intval *= (acpi_battery_mode(battery)) ? |
217 | (battery->voltage_now * | |
218 | acpi_battery_vscale(battery) / 1000) : 1; | |
94f6c086 AS |
219 | break; |
220 | case POWER_SUPPLY_PROP_CURRENT_AVG: | |
7faa144a AS |
221 | case POWER_SUPPLY_PROP_POWER_AVG: |
222 | val->intval = abs(battery->rate_avg) * | |
94f6c086 | 223 | acpi_battery_ipscale(battery) * 1000; |
e4108292 LT |
224 | val->intval *= (acpi_battery_mode(battery)) ? |
225 | (battery->voltage_now * | |
226 | acpi_battery_vscale(battery) / 1000) : 1; | |
94f6c086 AS |
227 | break; |
228 | case POWER_SUPPLY_PROP_CAPACITY: | |
229 | val->intval = battery->state_of_charge; | |
230 | break; | |
231 | case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: | |
232 | case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: | |
233 | val->intval = battery->design_capacity * | |
234 | acpi_battery_scale(battery) * 1000; | |
235 | break; | |
236 | case POWER_SUPPLY_PROP_CHARGE_FULL: | |
237 | case POWER_SUPPLY_PROP_ENERGY_FULL: | |
238 | val->intval = battery->full_charge_capacity * | |
239 | acpi_battery_scale(battery) * 1000; | |
240 | break; | |
241 | case POWER_SUPPLY_PROP_CHARGE_NOW: | |
242 | case POWER_SUPPLY_PROP_ENERGY_NOW: | |
243 | val->intval = battery->capacity_now * | |
244 | acpi_battery_scale(battery) * 1000; | |
245 | break; | |
246 | case POWER_SUPPLY_PROP_TEMP: | |
247 | val->intval = battery->temp_now - 2730; // dK -> dC | |
248 | break; | |
249 | case POWER_SUPPLY_PROP_MODEL_NAME: | |
250 | val->strval = battery->device_name; | |
251 | break; | |
252 | case POWER_SUPPLY_PROP_MANUFACTURER: | |
253 | val->strval = battery->manufacturer_name; | |
254 | break; | |
255 | default: | |
256 | return -EINVAL; | |
257 | } | |
258 | return 0; | |
259 | } | |
260 | ||
261 | static enum power_supply_property sbs_ac_props[] = { | |
262 | POWER_SUPPLY_PROP_ONLINE, | |
263 | }; | |
264 | ||
265 | static enum power_supply_property sbs_charge_battery_props[] = { | |
266 | POWER_SUPPLY_PROP_STATUS, | |
267 | POWER_SUPPLY_PROP_PRESENT, | |
268 | POWER_SUPPLY_PROP_TECHNOLOGY, | |
16698857 | 269 | POWER_SUPPLY_PROP_CYCLE_COUNT, |
94f6c086 AS |
270 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, |
271 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
272 | POWER_SUPPLY_PROP_CURRENT_NOW, | |
273 | POWER_SUPPLY_PROP_CURRENT_AVG, | |
274 | POWER_SUPPLY_PROP_CAPACITY, | |
275 | POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, | |
276 | POWER_SUPPLY_PROP_CHARGE_FULL, | |
277 | POWER_SUPPLY_PROP_CHARGE_NOW, | |
278 | POWER_SUPPLY_PROP_TEMP, | |
279 | POWER_SUPPLY_PROP_MODEL_NAME, | |
280 | POWER_SUPPLY_PROP_MANUFACTURER, | |
281 | }; | |
282 | ||
283 | static enum power_supply_property sbs_energy_battery_props[] = { | |
284 | POWER_SUPPLY_PROP_STATUS, | |
285 | POWER_SUPPLY_PROP_PRESENT, | |
286 | POWER_SUPPLY_PROP_TECHNOLOGY, | |
287 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, | |
288 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
289 | POWER_SUPPLY_PROP_CURRENT_NOW, | |
290 | POWER_SUPPLY_PROP_CURRENT_AVG, | |
7faa144a AS |
291 | POWER_SUPPLY_PROP_POWER_NOW, |
292 | POWER_SUPPLY_PROP_POWER_AVG, | |
94f6c086 AS |
293 | POWER_SUPPLY_PROP_CAPACITY, |
294 | POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, | |
295 | POWER_SUPPLY_PROP_ENERGY_FULL, | |
296 | POWER_SUPPLY_PROP_ENERGY_NOW, | |
297 | POWER_SUPPLY_PROP_TEMP, | |
298 | POWER_SUPPLY_PROP_MODEL_NAME, | |
299 | POWER_SUPPLY_PROP_MANUFACTURER, | |
300 | }; | |
7faa144a | 301 | |
94f6c086 | 302 | |
db1c291a AS |
303 | /* -------------------------------------------------------------------------- |
304 | Smart Battery System Management | |
305 | -------------------------------------------------------------------------- */ | |
3f86b832 | 306 | |
db1c291a AS |
307 | struct 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 | }; | |
3f86b832 | 312 | |
db1c291a AS |
313 | static 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 | }; | |
3f86b832 | 326 | |
db1c291a AS |
327 | static 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)}, | |
7faa144a AS |
330 | {0x0a, SMBUS_READ_WORD, offsetof(struct acpi_battery, rate_now)}, |
331 | {0x0b, SMBUS_READ_WORD, offsetof(struct acpi_battery, rate_avg)}, | |
db1c291a AS |
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 | }; | |
3f86b832 | 336 | |
db1c291a | 337 | static int acpi_manager_get_info(struct acpi_sbs *sbs) |
3f86b832 | 338 | { |
3f86b832 | 339 | int result = 0; |
db1c291a | 340 | u16 battery_system_info; |
3f86b832 | 341 | |
db1c291a | 342 | result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER, |
94f6c086 | 343 | 0x04, (u8 *)&battery_system_info); |
db1c291a AS |
344 | if (!result) |
345 | sbs->batteries_supported = battery_system_info & 0x000f; | |
635227ee | 346 | return result; |
3f86b832 RT |
347 | } |
348 | ||
349 | static int acpi_battery_get_info(struct acpi_battery *battery) | |
350 | { | |
db1c291a | 351 | int i, result = 0; |
3f86b832 | 352 | |
db1c291a | 353 | for (i = 0; i < ARRAY_SIZE(info_readers); ++i) { |
94f6c086 AS |
354 | 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); | |
db1c291a AS |
360 | if (result) |
361 | break; | |
3f86b832 | 362 | } |
635227ee | 363 | return result; |
3f86b832 RT |
364 | } |
365 | ||
3f86b832 RT |
366 | static int acpi_battery_get_state(struct acpi_battery *battery) |
367 | { | |
db1c291a | 368 | int i, result = 0; |
3f86b832 | 369 | |
94f6c086 AS |
370 | if (battery->update_time && |
371 | time_before(jiffies, battery->update_time + | |
db1c291a AS |
372 | 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) | |
3f86b832 | 382 | goto end; |
3f86b832 | 383 | } |
3f86b832 | 384 | end: |
db1c291a | 385 | battery->update_time = jiffies; |
635227ee | 386 | return result; |
3f86b832 RT |
387 | } |
388 | ||
db1c291a | 389 | static int acpi_battery_get_alarm(struct acpi_battery *battery) |
3f86b832 | 390 | { |
db1c291a AS |
391 | return acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, |
392 | ACPI_SBS_BATTERY, 0x01, | |
94f6c086 | 393 | (u8 *)&battery->alarm_capacity); |
3f86b832 RT |
394 | } |
395 | ||
db1c291a | 396 | static int acpi_battery_set_alarm(struct acpi_battery *battery) |
3f86b832 | 397 | { |
db1c291a | 398 | struct acpi_sbs *sbs = battery->sbs; |
94f6c086 AS |
399 | u16 value, sel = 1 << (battery->id + 12); |
400 | ||
401 | int ret; | |
402 | ||
3f86b832 | 403 | |
db1c291a | 404 | if (sbs->manager_present) { |
94f6c086 | 405 | ret = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER, |
db1c291a | 406 | 0x01, (u8 *)&value); |
94f6c086 AS |
407 | 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 | } | |
3f86b832 | 418 | } |
94f6c086 AS |
419 | ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, ACPI_SBS_BATTERY, |
420 | 0x01, (u8 *)&battery->alarm_capacity, 2); | |
421 | end: | |
422 | return ret; | |
3f86b832 RT |
423 | } |
424 | ||
425 | static int acpi_ac_get_present(struct acpi_sbs *sbs) | |
426 | { | |
db1c291a AS |
427 | int result; |
428 | u16 status; | |
3f86b832 | 429 | |
db1c291a AS |
430 | 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; | |
635227ee | 434 | return result; |
3f86b832 RT |
435 | } |
436 | ||
8bd95532 AS |
437 | static 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 | ||
447 | static 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)); | |
32a90512 | 453 | if (sscanf(buf, "%lu\n", &x) == 1) |
8bd95532 AS |
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 | ||
461 | static struct device_attribute alarm_attr = { | |
01e8ef11 | 462 | .attr = {.name = "alarm", .mode = 0644}, |
8bd95532 AS |
463 | .show = acpi_battery_alarm_show, |
464 | .store = acpi_battery_alarm_store, | |
465 | }; | |
466 | ||
3f86b832 RT |
467 | /* -------------------------------------------------------------------------- |
468 | Driver Interface | |
469 | -------------------------------------------------------------------------- */ | |
db1c291a | 470 | static int acpi_battery_read(struct acpi_battery *battery) |
3f86b832 | 471 | { |
db1c291a AS |
472 | int result = 0, saved_present = battery->present; |
473 | u16 state; | |
3f86b832 | 474 | |
db1c291a AS |
475 | if (battery->sbs->manager_present) { |
476 | result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, | |
477 | ACPI_SBS_MANAGER, 0x01, (u8 *)&state); | |
478 | if (!result) | |
479 | battery->present = state & (1 << battery->id); | |
480 | state &= 0x0fff; | |
481 | state |= 1 << (battery->id + 12); | |
482 | acpi_smbus_write(battery->sbs->hc, SMBUS_WRITE_WORD, | |
483 | ACPI_SBS_MANAGER, 0x01, (u8 *)&state, 2); | |
484 | } else if (battery->id == 0) | |
485 | battery->present = 1; | |
486 | if (result || !battery->present) | |
487 | return result; | |
3f86b832 | 488 | |
db1c291a AS |
489 | if (saved_present != battery->present) { |
490 | battery->update_time = 0; | |
491 | result = acpi_battery_get_info(battery); | |
492 | if (result) | |
493 | return result; | |
494 | } | |
495 | result = acpi_battery_get_state(battery); | |
496 | return result; | |
497 | } | |
3f86b832 | 498 | |
94f6c086 | 499 | /* Smart Battery */ |
db1c291a AS |
500 | static int acpi_battery_add(struct acpi_sbs *sbs, int id) |
501 | { | |
db1c291a | 502 | struct acpi_battery *battery = &sbs->battery[id]; |
94f6c086 AS |
503 | int result; |
504 | ||
3f86b832 RT |
505 | battery->id = id; |
506 | battery->sbs = sbs; | |
db1c291a AS |
507 | result = acpi_battery_read(battery); |
508 | if (result) | |
509 | return result; | |
3f86b832 | 510 | |
db1c291a | 511 | sprintf(battery->name, ACPI_BATTERY_DIR_NAME, id); |
94f6c086 AS |
512 | battery->bat.name = battery->name; |
513 | battery->bat.type = POWER_SUPPLY_TYPE_BATTERY; | |
514 | if (!acpi_battery_mode(battery)) { | |
515 | battery->bat.properties = sbs_charge_battery_props; | |
516 | battery->bat.num_properties = | |
517 | ARRAY_SIZE(sbs_charge_battery_props); | |
518 | } else { | |
519 | battery->bat.properties = sbs_energy_battery_props; | |
520 | battery->bat.num_properties = | |
521 | ARRAY_SIZE(sbs_energy_battery_props); | |
522 | } | |
523 | battery->bat.get_property = acpi_sbs_battery_get_property; | |
524 | result = power_supply_register(&sbs->device->dev, &battery->bat); | |
037cbc63 JG |
525 | if (result) |
526 | goto end; | |
527 | result = device_create_file(battery->bat.dev, &alarm_attr); | |
528 | if (result) | |
529 | goto end; | |
530 | battery->have_sysfs_alarm = 1; | |
531 | end: | |
72206233 | 532 | printk(KERN_INFO PREFIX "%s [%s]: Battery Slot [%s] (battery %s)\n", |
db1c291a | 533 | ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device), |
bbafbecb | 534 | battery->name, battery->present ? "present" : "absent"); |
635227ee | 535 | return result; |
3f86b832 RT |
536 | } |
537 | ||
538 | static void acpi_battery_remove(struct acpi_sbs *sbs, int id) | |
539 | { | |
037cbc63 | 540 | struct acpi_battery *battery = &sbs->battery[id]; |
c19bdb61 | 541 | |
037cbc63 JG |
542 | if (battery->bat.dev) { |
543 | if (battery->have_sysfs_alarm) | |
544 | device_remove_file(battery->bat.dev, &alarm_attr); | |
545 | power_supply_unregister(&battery->bat); | |
3f86b832 RT |
546 | } |
547 | } | |
548 | ||
db1c291a | 549 | static int acpi_charger_add(struct acpi_sbs *sbs) |
3f86b832 RT |
550 | { |
551 | int result; | |
552 | ||
3f86b832 | 553 | result = acpi_ac_get_present(sbs); |
db1c291a | 554 | if (result) |
3f86b832 | 555 | goto end; |
2a68b995 | 556 | |
94f6c086 AS |
557 | sbs->charger.name = "sbs-charger"; |
558 | sbs->charger.type = POWER_SUPPLY_TYPE_MAINS; | |
559 | sbs->charger.properties = sbs_ac_props; | |
560 | sbs->charger.num_properties = ARRAY_SIZE(sbs_ac_props); | |
561 | sbs->charger.get_property = sbs_get_ac_property; | |
562 | power_supply_register(&sbs->device->dev, &sbs->charger); | |
72206233 VL |
563 | printk(KERN_INFO PREFIX "%s [%s]: AC Adapter [%s] (%s)\n", |
564 | ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device), | |
89862e3b | 565 | ACPI_AC_DIR_NAME, sbs->charger_present ? "on-line" : "off-line"); |
3f86b832 | 566 | end: |
635227ee | 567 | return result; |
3f86b832 RT |
568 | } |
569 | ||
db1c291a | 570 | static void acpi_charger_remove(struct acpi_sbs *sbs) |
3f86b832 | 571 | { |
94f6c086 AS |
572 | if (sbs->charger.dev) |
573 | power_supply_unregister(&sbs->charger); | |
3f86b832 RT |
574 | } |
575 | ||
e5685b9d | 576 | static void acpi_sbs_callback(void *context) |
3f86b832 | 577 | { |
db1c291a AS |
578 | int id; |
579 | struct acpi_sbs *sbs = context; | |
580 | struct acpi_battery *bat; | |
581 | u8 saved_charger_state = sbs->charger_present; | |
582 | u8 saved_battery_state; | |
583 | acpi_ac_get_present(sbs); | |
1696d9dc | 584 | if (sbs->charger_present != saved_charger_state) |
94f6c086 | 585 | kobject_uevent(&sbs->charger.dev->kobj, KOBJ_CHANGE); |
1696d9dc | 586 | |
db1c291a AS |
587 | if (sbs->manager_present) { |
588 | for (id = 0; id < MAX_SBS_BAT; ++id) { | |
589 | if (!(sbs->batteries_supported & (1 << id))) | |
590 | continue; | |
591 | bat = &sbs->battery[id]; | |
592 | saved_battery_state = bat->present; | |
593 | acpi_battery_read(bat); | |
594 | if (saved_battery_state == bat->present) | |
595 | continue; | |
94f6c086 | 596 | kobject_uevent(&bat->bat.dev->kobj, KOBJ_CHANGE); |
3f86b832 | 597 | } |
3f86b832 | 598 | } |
3f86b832 RT |
599 | } |
600 | ||
3f86b832 RT |
601 | static int acpi_sbs_add(struct acpi_device *device) |
602 | { | |
db1c291a AS |
603 | struct acpi_sbs *sbs; |
604 | int result = 0; | |
6d15702c | 605 | int id; |
3f86b832 | 606 | |
36bcbec7 | 607 | sbs = kzalloc(sizeof(struct acpi_sbs), GFP_KERNEL); |
3f86b832 | 608 | if (!sbs) { |
72206233 VL |
609 | result = -ENOMEM; |
610 | goto end; | |
3f86b832 | 611 | } |
3f86b832 | 612 | |
db1c291a | 613 | mutex_init(&sbs->lock); |
72206233 | 614 | |
91087dfa | 615 | sbs->hc = acpi_driver_data(device->parent); |
db1c291a | 616 | sbs->device = device; |
3f86b832 RT |
617 | strcpy(acpi_device_name(device), ACPI_SBS_DEVICE_NAME); |
618 | strcpy(acpi_device_class(device), ACPI_SBS_CLASS); | |
db89b4f0 | 619 | device->driver_data = sbs; |
3f86b832 | 620 | |
db1c291a | 621 | result = acpi_charger_add(sbs); |
72206233 VL |
622 | if (result) |
623 | goto end; | |
3f86b832 | 624 | |
db1c291a AS |
625 | result = acpi_manager_get_info(sbs); |
626 | if (!result) { | |
627 | sbs->manager_present = 1; | |
628 | for (id = 0; id < MAX_SBS_BAT; ++id) | |
629 | if ((sbs->batteries_supported & (1 << id))) | |
630 | acpi_battery_add(sbs, id); | |
631 | } else | |
632 | acpi_battery_add(sbs, 0); | |
633 | acpi_smbus_register_callback(sbs->hc, acpi_sbs_callback, sbs); | |
3f86b832 | 634 | end: |
db1c291a | 635 | if (result) |
51fac838 | 636 | acpi_sbs_remove(device); |
635227ee | 637 | return result; |
3f86b832 RT |
638 | } |
639 | ||
51fac838 | 640 | static int acpi_sbs_remove(struct acpi_device *device) |
3f86b832 | 641 | { |
cece9014 | 642 | struct acpi_sbs *sbs; |
3f86b832 RT |
643 | int id; |
644 | ||
db1c291a | 645 | if (!device) |
963497c1 | 646 | return -EINVAL; |
72206233 | 647 | sbs = acpi_driver_data(device); |
db1c291a | 648 | if (!sbs) |
635227ee | 649 | return -EINVAL; |
db1c291a AS |
650 | mutex_lock(&sbs->lock); |
651 | acpi_smbus_unregister_callback(sbs->hc); | |
652 | for (id = 0; id < MAX_SBS_BAT; ++id) | |
3f86b832 | 653 | acpi_battery_remove(sbs, id); |
db1c291a AS |
654 | acpi_charger_remove(sbs); |
655 | mutex_unlock(&sbs->lock); | |
656 | mutex_destroy(&sbs->lock); | |
3f86b832 | 657 | kfree(sbs); |
635227ee | 658 | return 0; |
3f86b832 RT |
659 | } |
660 | ||
90692404 | 661 | #ifdef CONFIG_PM_SLEEP |
d202f77d | 662 | static int acpi_sbs_resume(struct device *dev) |
72206233 VL |
663 | { |
664 | struct acpi_sbs *sbs; | |
d202f77d | 665 | if (!dev) |
72206233 | 666 | return -EINVAL; |
d202f77d | 667 | sbs = to_acpi_device(dev)->driver_data; |
db1c291a | 668 | acpi_sbs_callback(sbs); |
72206233 VL |
669 | return 0; |
670 | } | |
15029dd7 SK |
671 | #else |
672 | #define acpi_sbs_resume NULL | |
90692404 | 673 | #endif |
72206233 | 674 | |
d202f77d RW |
675 | static SIMPLE_DEV_PM_OPS(acpi_sbs_pm, NULL, acpi_sbs_resume); |
676 | ||
94f6c086 AS |
677 | static struct acpi_driver acpi_sbs_driver = { |
678 | .name = "sbs", | |
679 | .class = ACPI_SBS_CLASS, | |
680 | .ids = sbs_device_ids, | |
681 | .ops = { | |
682 | .add = acpi_sbs_add, | |
683 | .remove = acpi_sbs_remove, | |
94f6c086 | 684 | }, |
d202f77d | 685 | .drv.pm = &acpi_sbs_pm, |
94f6c086 AS |
686 | }; |
687 | ||
3f86b832 RT |
688 | static int __init acpi_sbs_init(void) |
689 | { | |
690 | int result = 0; | |
691 | ||
b20d2aeb LB |
692 | if (acpi_disabled) |
693 | return -ENODEV; | |
2a68b995 | 694 | |
3f86b832 | 695 | result = acpi_bus_register_driver(&acpi_sbs_driver); |
2a68b995 | 696 | if (result < 0) |
635227ee | 697 | return -ENODEV; |
2a68b995 | 698 | |
635227ee | 699 | return 0; |
3f86b832 RT |
700 | } |
701 | ||
702 | static void __exit acpi_sbs_exit(void) | |
703 | { | |
3f86b832 | 704 | acpi_bus_unregister_driver(&acpi_sbs_driver); |
635227ee | 705 | return; |
3f86b832 RT |
706 | } |
707 | ||
708 | module_init(acpi_sbs_init); | |
709 | module_exit(acpi_sbs_exit); |