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 | 37 | #include <linux/power_supply.h> |
9faf6136 | 38 | #include <linux/dmi.h> |
94f6c086 | 39 | |
91087dfa | 40 | #include "sbshc.h" |
f03be352 | 41 | #include "battery.h" |
91087dfa | 42 | |
a192a958 LB |
43 | #define PREFIX "ACPI: " |
44 | ||
3f86b832 RT |
45 | #define ACPI_SBS_CLASS "sbs" |
46 | #define ACPI_AC_CLASS "ac_adapter" | |
3f86b832 RT |
47 | #define ACPI_SBS_DEVICE_NAME "Smart Battery System" |
48 | #define ACPI_SBS_FILE_INFO "info" | |
49 | #define ACPI_SBS_FILE_STATE "state" | |
50 | #define ACPI_SBS_FILE_ALARM "alarm" | |
51 | #define ACPI_BATTERY_DIR_NAME "BAT%i" | |
52 | #define ACPI_AC_DIR_NAME "AC0" | |
3f86b832 | 53 | |
db1c291a AS |
54 | #define ACPI_SBS_NOTIFY_STATUS 0x80 |
55 | #define ACPI_SBS_NOTIFY_INFO 0x81 | |
3f86b832 | 56 | |
db1c291a | 57 | MODULE_AUTHOR("Alexey Starikovskiy <astarikovskiy@suse.de>"); |
3f86b832 RT |
58 | MODULE_DESCRIPTION("Smart Battery System ACPI interface driver"); |
59 | MODULE_LICENSE("GPL"); | |
60 | ||
db1c291a AS |
61 | static unsigned int cache_time = 1000; |
62 | module_param(cache_time, uint, 0644); | |
63 | MODULE_PARM_DESC(cache_time, "cache time in milliseconds"); | |
6d15702c | 64 | |
9faf6136 MG |
65 | static bool sbs_manager_broken; |
66 | ||
db1c291a | 67 | #define MAX_SBS_BAT 4 |
6d15702c VL |
68 | #define ACPI_SBS_BLOCK_MAX 32 |
69 | ||
1ba90e3a | 70 | static const struct acpi_device_id sbs_device_ids[] = { |
91087dfa | 71 | {"ACPI0002", 0}, |
1ba90e3a TR |
72 | {"", 0}, |
73 | }; | |
74 | MODULE_DEVICE_TABLE(acpi, sbs_device_ids); | |
75 | ||
3f86b832 | 76 | struct acpi_battery { |
94f6c086 | 77 | struct power_supply bat; |
3f86b832 | 78 | struct acpi_sbs *sbs; |
db1c291a AS |
79 | unsigned long update_time; |
80 | char name[8]; | |
89862e3b AS |
81 | char manufacturer_name[ACPI_SBS_BLOCK_MAX]; |
82 | char device_name[ACPI_SBS_BLOCK_MAX]; | |
83 | char device_chemistry[ACPI_SBS_BLOCK_MAX]; | |
94f6c086 | 84 | u16 alarm_capacity; |
89862e3b AS |
85 | u16 full_charge_capacity; |
86 | u16 design_capacity; | |
87 | u16 design_voltage; | |
88 | u16 serial_number; | |
db1c291a AS |
89 | u16 cycle_count; |
90 | u16 temp_now; | |
89862e3b | 91 | u16 voltage_now; |
7faa144a AS |
92 | s16 rate_now; |
93 | s16 rate_avg; | |
89862e3b | 94 | u16 capacity_now; |
db1c291a | 95 | u16 state_of_charge; |
89862e3b | 96 | u16 state; |
89862e3b | 97 | u16 mode; |
db1c291a | 98 | u16 spec; |
89862e3b | 99 | u8 id; |
89862e3b | 100 | u8 present:1; |
037cbc63 | 101 | u8 have_sysfs_alarm:1; |
3f86b832 RT |
102 | }; |
103 | ||
497888cf | 104 | #define to_acpi_battery(x) container_of(x, struct acpi_battery, bat) |
94f6c086 | 105 | |
3f86b832 | 106 | struct acpi_sbs { |
94f6c086 | 107 | struct power_supply charger; |
3f86b832 | 108 | struct acpi_device *device; |
91087dfa | 109 | struct acpi_smb_hc *hc; |
db1c291a | 110 | struct mutex lock; |
3f86b832 | 111 | struct acpi_battery battery[MAX_SBS_BAT]; |
db1c291a | 112 | u8 batteries_supported:4; |
89862e3b AS |
113 | u8 manager_present:1; |
114 | u8 charger_present:1; | |
3031cdde | 115 | u8 charger_exists:1; |
3f86b832 RT |
116 | }; |
117 | ||
94f6c086 AS |
118 | #define to_acpi_sbs(x) container_of(x, struct acpi_sbs, charger) |
119 | ||
51fac838 | 120 | static int acpi_sbs_remove(struct acpi_device *device); |
1dd5c715 LT |
121 | static int acpi_battery_get_state(struct acpi_battery *battery); |
122 | ||
db1c291a | 123 | static inline int battery_scale(int log) |
72206233 | 124 | { |
db1c291a AS |
125 | int scale = 1; |
126 | while (log--) | |
127 | scale *= 10; | |
128 | return scale; | |
72206233 VL |
129 | } |
130 | ||
db1c291a | 131 | static inline int acpi_battery_vscale(struct acpi_battery *battery) |
72206233 | 132 | { |
db1c291a | 133 | return battery_scale((battery->spec & 0x0f00) >> 8); |
72206233 VL |
134 | } |
135 | ||
db1c291a | 136 | static inline int acpi_battery_ipscale(struct acpi_battery *battery) |
72206233 | 137 | { |
db1c291a | 138 | return battery_scale((battery->spec & 0xf000) >> 12); |
72206233 VL |
139 | } |
140 | ||
db1c291a | 141 | static inline int acpi_battery_mode(struct acpi_battery *battery) |
72206233 | 142 | { |
db1c291a | 143 | return (battery->mode & 0x8000); |
72206233 | 144 | } |
3f86b832 | 145 | |
db1c291a | 146 | static inline int acpi_battery_scale(struct acpi_battery *battery) |
3f86b832 | 147 | { |
db1c291a AS |
148 | return (acpi_battery_mode(battery) ? 10 : 1) * |
149 | acpi_battery_ipscale(battery); | |
3f86b832 RT |
150 | } |
151 | ||
94f6c086 AS |
152 | static int sbs_get_ac_property(struct power_supply *psy, |
153 | enum power_supply_property psp, | |
154 | union power_supply_propval *val) | |
155 | { | |
156 | struct acpi_sbs *sbs = to_acpi_sbs(psy); | |
157 | switch (psp) { | |
158 | case POWER_SUPPLY_PROP_ONLINE: | |
159 | val->intval = sbs->charger_present; | |
160 | break; | |
161 | default: | |
162 | return -EINVAL; | |
163 | } | |
164 | return 0; | |
165 | } | |
166 | ||
167 | static int acpi_battery_technology(struct acpi_battery *battery) | |
168 | { | |
169 | if (!strcasecmp("NiCd", battery->device_chemistry)) | |
170 | return POWER_SUPPLY_TECHNOLOGY_NiCd; | |
171 | if (!strcasecmp("NiMH", battery->device_chemistry)) | |
172 | return POWER_SUPPLY_TECHNOLOGY_NiMH; | |
173 | if (!strcasecmp("LION", battery->device_chemistry)) | |
174 | return POWER_SUPPLY_TECHNOLOGY_LION; | |
175 | if (!strcasecmp("LiP", battery->device_chemistry)) | |
176 | return POWER_SUPPLY_TECHNOLOGY_LIPO; | |
177 | return POWER_SUPPLY_TECHNOLOGY_UNKNOWN; | |
178 | } | |
179 | ||
180 | static int acpi_sbs_battery_get_property(struct power_supply *psy, | |
181 | enum power_supply_property psp, | |
182 | union power_supply_propval *val) | |
183 | { | |
184 | struct acpi_battery *battery = to_acpi_battery(psy); | |
185 | ||
186 | if ((!battery->present) && psp != POWER_SUPPLY_PROP_PRESENT) | |
187 | return -ENODEV; | |
1dd5c715 LT |
188 | |
189 | acpi_battery_get_state(battery); | |
94f6c086 AS |
190 | switch (psp) { |
191 | case POWER_SUPPLY_PROP_STATUS: | |
7faa144a | 192 | if (battery->rate_now < 0) |
94f6c086 | 193 | val->intval = POWER_SUPPLY_STATUS_DISCHARGING; |
7faa144a | 194 | else if (battery->rate_now > 0) |
94f6c086 AS |
195 | val->intval = POWER_SUPPLY_STATUS_CHARGING; |
196 | else | |
197 | val->intval = POWER_SUPPLY_STATUS_FULL; | |
198 | break; | |
199 | case POWER_SUPPLY_PROP_PRESENT: | |
200 | val->intval = battery->present; | |
201 | break; | |
202 | case POWER_SUPPLY_PROP_TECHNOLOGY: | |
203 | val->intval = acpi_battery_technology(battery); | |
204 | break; | |
16698857 AS |
205 | case POWER_SUPPLY_PROP_CYCLE_COUNT: |
206 | val->intval = battery->cycle_count; | |
207 | break; | |
94f6c086 AS |
208 | case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: |
209 | val->intval = battery->design_voltage * | |
210 | acpi_battery_vscale(battery) * 1000; | |
211 | break; | |
212 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
213 | val->intval = battery->voltage_now * | |
214 | acpi_battery_vscale(battery) * 1000; | |
215 | break; | |
216 | case POWER_SUPPLY_PROP_CURRENT_NOW: | |
7faa144a AS |
217 | case POWER_SUPPLY_PROP_POWER_NOW: |
218 | val->intval = abs(battery->rate_now) * | |
94f6c086 | 219 | acpi_battery_ipscale(battery) * 1000; |
e4108292 LT |
220 | val->intval *= (acpi_battery_mode(battery)) ? |
221 | (battery->voltage_now * | |
222 | acpi_battery_vscale(battery) / 1000) : 1; | |
94f6c086 AS |
223 | break; |
224 | case POWER_SUPPLY_PROP_CURRENT_AVG: | |
7faa144a AS |
225 | case POWER_SUPPLY_PROP_POWER_AVG: |
226 | val->intval = abs(battery->rate_avg) * | |
94f6c086 | 227 | acpi_battery_ipscale(battery) * 1000; |
e4108292 LT |
228 | val->intval *= (acpi_battery_mode(battery)) ? |
229 | (battery->voltage_now * | |
230 | acpi_battery_vscale(battery) / 1000) : 1; | |
94f6c086 AS |
231 | break; |
232 | case POWER_SUPPLY_PROP_CAPACITY: | |
233 | val->intval = battery->state_of_charge; | |
234 | break; | |
235 | case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: | |
236 | case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: | |
237 | val->intval = battery->design_capacity * | |
238 | acpi_battery_scale(battery) * 1000; | |
239 | break; | |
240 | case POWER_SUPPLY_PROP_CHARGE_FULL: | |
241 | case POWER_SUPPLY_PROP_ENERGY_FULL: | |
242 | val->intval = battery->full_charge_capacity * | |
243 | acpi_battery_scale(battery) * 1000; | |
244 | break; | |
245 | case POWER_SUPPLY_PROP_CHARGE_NOW: | |
246 | case POWER_SUPPLY_PROP_ENERGY_NOW: | |
247 | val->intval = battery->capacity_now * | |
248 | acpi_battery_scale(battery) * 1000; | |
249 | break; | |
250 | case POWER_SUPPLY_PROP_TEMP: | |
251 | val->intval = battery->temp_now - 2730; // dK -> dC | |
252 | break; | |
253 | case POWER_SUPPLY_PROP_MODEL_NAME: | |
254 | val->strval = battery->device_name; | |
255 | break; | |
256 | case POWER_SUPPLY_PROP_MANUFACTURER: | |
257 | val->strval = battery->manufacturer_name; | |
258 | break; | |
259 | default: | |
260 | return -EINVAL; | |
261 | } | |
262 | return 0; | |
263 | } | |
264 | ||
265 | static enum power_supply_property sbs_ac_props[] = { | |
266 | POWER_SUPPLY_PROP_ONLINE, | |
267 | }; | |
268 | ||
269 | static enum power_supply_property sbs_charge_battery_props[] = { | |
270 | POWER_SUPPLY_PROP_STATUS, | |
271 | POWER_SUPPLY_PROP_PRESENT, | |
272 | POWER_SUPPLY_PROP_TECHNOLOGY, | |
16698857 | 273 | POWER_SUPPLY_PROP_CYCLE_COUNT, |
94f6c086 AS |
274 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, |
275 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
276 | POWER_SUPPLY_PROP_CURRENT_NOW, | |
277 | POWER_SUPPLY_PROP_CURRENT_AVG, | |
278 | POWER_SUPPLY_PROP_CAPACITY, | |
279 | POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, | |
280 | POWER_SUPPLY_PROP_CHARGE_FULL, | |
281 | POWER_SUPPLY_PROP_CHARGE_NOW, | |
282 | POWER_SUPPLY_PROP_TEMP, | |
283 | POWER_SUPPLY_PROP_MODEL_NAME, | |
284 | POWER_SUPPLY_PROP_MANUFACTURER, | |
285 | }; | |
286 | ||
287 | static enum power_supply_property sbs_energy_battery_props[] = { | |
288 | POWER_SUPPLY_PROP_STATUS, | |
289 | POWER_SUPPLY_PROP_PRESENT, | |
290 | POWER_SUPPLY_PROP_TECHNOLOGY, | |
291 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, | |
292 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
293 | POWER_SUPPLY_PROP_CURRENT_NOW, | |
294 | POWER_SUPPLY_PROP_CURRENT_AVG, | |
7faa144a AS |
295 | POWER_SUPPLY_PROP_POWER_NOW, |
296 | POWER_SUPPLY_PROP_POWER_AVG, | |
94f6c086 AS |
297 | POWER_SUPPLY_PROP_CAPACITY, |
298 | POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, | |
299 | POWER_SUPPLY_PROP_ENERGY_FULL, | |
300 | POWER_SUPPLY_PROP_ENERGY_NOW, | |
301 | POWER_SUPPLY_PROP_TEMP, | |
302 | POWER_SUPPLY_PROP_MODEL_NAME, | |
303 | POWER_SUPPLY_PROP_MANUFACTURER, | |
304 | }; | |
7faa144a | 305 | |
94f6c086 | 306 | |
db1c291a AS |
307 | /* -------------------------------------------------------------------------- |
308 | Smart Battery System Management | |
309 | -------------------------------------------------------------------------- */ | |
3f86b832 | 310 | |
db1c291a AS |
311 | struct acpi_battery_reader { |
312 | u8 command; /* command for battery */ | |
313 | u8 mode; /* word or block? */ | |
314 | size_t offset; /* offset inside struct acpi_sbs_battery */ | |
315 | }; | |
3f86b832 | 316 | |
db1c291a AS |
317 | static struct acpi_battery_reader info_readers[] = { |
318 | {0x01, SMBUS_READ_WORD, offsetof(struct acpi_battery, alarm_capacity)}, | |
319 | {0x03, SMBUS_READ_WORD, offsetof(struct acpi_battery, mode)}, | |
320 | {0x10, SMBUS_READ_WORD, offsetof(struct acpi_battery, full_charge_capacity)}, | |
321 | {0x17, SMBUS_READ_WORD, offsetof(struct acpi_battery, cycle_count)}, | |
322 | {0x18, SMBUS_READ_WORD, offsetof(struct acpi_battery, design_capacity)}, | |
323 | {0x19, SMBUS_READ_WORD, offsetof(struct acpi_battery, design_voltage)}, | |
324 | {0x1a, SMBUS_READ_WORD, offsetof(struct acpi_battery, spec)}, | |
325 | {0x1c, SMBUS_READ_WORD, offsetof(struct acpi_battery, serial_number)}, | |
326 | {0x20, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, manufacturer_name)}, | |
327 | {0x21, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, device_name)}, | |
328 | {0x22, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, device_chemistry)}, | |
329 | }; | |
3f86b832 | 330 | |
db1c291a AS |
331 | static struct acpi_battery_reader state_readers[] = { |
332 | {0x08, SMBUS_READ_WORD, offsetof(struct acpi_battery, temp_now)}, | |
333 | {0x09, SMBUS_READ_WORD, offsetof(struct acpi_battery, voltage_now)}, | |
7faa144a AS |
334 | {0x0a, SMBUS_READ_WORD, offsetof(struct acpi_battery, rate_now)}, |
335 | {0x0b, SMBUS_READ_WORD, offsetof(struct acpi_battery, rate_avg)}, | |
db1c291a AS |
336 | {0x0f, SMBUS_READ_WORD, offsetof(struct acpi_battery, capacity_now)}, |
337 | {0x0e, SMBUS_READ_WORD, offsetof(struct acpi_battery, state_of_charge)}, | |
338 | {0x16, SMBUS_READ_WORD, offsetof(struct acpi_battery, state)}, | |
339 | }; | |
3f86b832 | 340 | |
db1c291a | 341 | static int acpi_manager_get_info(struct acpi_sbs *sbs) |
3f86b832 | 342 | { |
3f86b832 | 343 | int result = 0; |
db1c291a | 344 | u16 battery_system_info; |
3f86b832 | 345 | |
db1c291a | 346 | result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER, |
94f6c086 | 347 | 0x04, (u8 *)&battery_system_info); |
db1c291a AS |
348 | if (!result) |
349 | sbs->batteries_supported = battery_system_info & 0x000f; | |
635227ee | 350 | return result; |
3f86b832 RT |
351 | } |
352 | ||
353 | static int acpi_battery_get_info(struct acpi_battery *battery) | |
354 | { | |
db1c291a | 355 | int i, result = 0; |
3f86b832 | 356 | |
db1c291a | 357 | for (i = 0; i < ARRAY_SIZE(info_readers); ++i) { |
94f6c086 AS |
358 | result = acpi_smbus_read(battery->sbs->hc, |
359 | info_readers[i].mode, | |
360 | ACPI_SBS_BATTERY, | |
361 | info_readers[i].command, | |
362 | (u8 *) battery + | |
363 | info_readers[i].offset); | |
db1c291a AS |
364 | if (result) |
365 | break; | |
3f86b832 | 366 | } |
635227ee | 367 | return result; |
3f86b832 RT |
368 | } |
369 | ||
3f86b832 RT |
370 | static int acpi_battery_get_state(struct acpi_battery *battery) |
371 | { | |
db1c291a | 372 | int i, result = 0; |
3f86b832 | 373 | |
94f6c086 AS |
374 | if (battery->update_time && |
375 | time_before(jiffies, battery->update_time + | |
db1c291a AS |
376 | msecs_to_jiffies(cache_time))) |
377 | return 0; | |
378 | for (i = 0; i < ARRAY_SIZE(state_readers); ++i) { | |
379 | result = acpi_smbus_read(battery->sbs->hc, | |
380 | state_readers[i].mode, | |
381 | ACPI_SBS_BATTERY, | |
382 | state_readers[i].command, | |
383 | (u8 *)battery + | |
384 | state_readers[i].offset); | |
385 | if (result) | |
3f86b832 | 386 | goto end; |
3f86b832 | 387 | } |
3f86b832 | 388 | end: |
db1c291a | 389 | battery->update_time = jiffies; |
635227ee | 390 | return result; |
3f86b832 RT |
391 | } |
392 | ||
db1c291a | 393 | static int acpi_battery_get_alarm(struct acpi_battery *battery) |
3f86b832 | 394 | { |
db1c291a AS |
395 | return acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, |
396 | ACPI_SBS_BATTERY, 0x01, | |
94f6c086 | 397 | (u8 *)&battery->alarm_capacity); |
3f86b832 RT |
398 | } |
399 | ||
db1c291a | 400 | static int acpi_battery_set_alarm(struct acpi_battery *battery) |
3f86b832 | 401 | { |
db1c291a | 402 | struct acpi_sbs *sbs = battery->sbs; |
94f6c086 AS |
403 | u16 value, sel = 1 << (battery->id + 12); |
404 | ||
405 | int ret; | |
406 | ||
3f86b832 | 407 | |
db1c291a | 408 | if (sbs->manager_present) { |
94f6c086 | 409 | ret = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER, |
db1c291a | 410 | 0x01, (u8 *)&value); |
94f6c086 AS |
411 | if (ret) |
412 | goto end; | |
413 | if ((value & 0xf000) != sel) { | |
414 | value &= 0x0fff; | |
415 | value |= sel; | |
416 | ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, | |
417 | ACPI_SBS_MANAGER, | |
418 | 0x01, (u8 *)&value, 2); | |
419 | if (ret) | |
420 | goto end; | |
421 | } | |
3f86b832 | 422 | } |
94f6c086 AS |
423 | ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, ACPI_SBS_BATTERY, |
424 | 0x01, (u8 *)&battery->alarm_capacity, 2); | |
425 | end: | |
426 | return ret; | |
3f86b832 RT |
427 | } |
428 | ||
429 | static int acpi_ac_get_present(struct acpi_sbs *sbs) | |
430 | { | |
db1c291a AS |
431 | int result; |
432 | u16 status; | |
3f86b832 | 433 | |
db1c291a AS |
434 | result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_CHARGER, |
435 | 0x13, (u8 *) & status); | |
3031cdde MG |
436 | |
437 | if (result) | |
438 | return result; | |
439 | ||
440 | /* | |
441 | * The spec requires that bit 4 always be 1. If it's not set, assume | |
442 | * that the implementation doesn't support an SBS charger | |
443 | */ | |
5159e39b | 444 | if (!((status >> 4) & 0x1)) |
3031cdde MG |
445 | return -ENODEV; |
446 | ||
447 | sbs->charger_present = (status >> 15) & 0x1; | |
448 | return 0; | |
3f86b832 RT |
449 | } |
450 | ||
8bd95532 AS |
451 | static ssize_t acpi_battery_alarm_show(struct device *dev, |
452 | struct device_attribute *attr, | |
453 | char *buf) | |
454 | { | |
455 | struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev)); | |
456 | acpi_battery_get_alarm(battery); | |
457 | return sprintf(buf, "%d\n", battery->alarm_capacity * | |
458 | acpi_battery_scale(battery) * 1000); | |
459 | } | |
460 | ||
461 | static ssize_t acpi_battery_alarm_store(struct device *dev, | |
462 | struct device_attribute *attr, | |
463 | const char *buf, size_t count) | |
464 | { | |
465 | unsigned long x; | |
466 | struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev)); | |
32a90512 | 467 | if (sscanf(buf, "%lu\n", &x) == 1) |
8bd95532 AS |
468 | battery->alarm_capacity = x / |
469 | (1000 * acpi_battery_scale(battery)); | |
470 | if (battery->present) | |
471 | acpi_battery_set_alarm(battery); | |
472 | return count; | |
473 | } | |
474 | ||
475 | static struct device_attribute alarm_attr = { | |
01e8ef11 | 476 | .attr = {.name = "alarm", .mode = 0644}, |
8bd95532 AS |
477 | .show = acpi_battery_alarm_show, |
478 | .store = acpi_battery_alarm_store, | |
479 | }; | |
480 | ||
3f86b832 RT |
481 | /* -------------------------------------------------------------------------- |
482 | Driver Interface | |
483 | -------------------------------------------------------------------------- */ | |
db1c291a | 484 | static int acpi_battery_read(struct acpi_battery *battery) |
3f86b832 | 485 | { |
db1c291a AS |
486 | int result = 0, saved_present = battery->present; |
487 | u16 state; | |
3f86b832 | 488 | |
db1c291a AS |
489 | if (battery->sbs->manager_present) { |
490 | result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, | |
491 | ACPI_SBS_MANAGER, 0x01, (u8 *)&state); | |
492 | if (!result) | |
493 | battery->present = state & (1 << battery->id); | |
494 | state &= 0x0fff; | |
495 | state |= 1 << (battery->id + 12); | |
496 | acpi_smbus_write(battery->sbs->hc, SMBUS_WRITE_WORD, | |
497 | ACPI_SBS_MANAGER, 0x01, (u8 *)&state, 2); | |
498 | } else if (battery->id == 0) | |
499 | battery->present = 1; | |
9faf6136 | 500 | |
db1c291a AS |
501 | if (result || !battery->present) |
502 | return result; | |
3f86b832 | 503 | |
db1c291a AS |
504 | if (saved_present != battery->present) { |
505 | battery->update_time = 0; | |
506 | result = acpi_battery_get_info(battery); | |
9faf6136 MG |
507 | if (result) { |
508 | battery->present = 0; | |
db1c291a | 509 | return result; |
9faf6136 | 510 | } |
db1c291a AS |
511 | } |
512 | result = acpi_battery_get_state(battery); | |
9faf6136 MG |
513 | if (result) |
514 | battery->present = 0; | |
db1c291a AS |
515 | return result; |
516 | } | |
3f86b832 | 517 | |
94f6c086 | 518 | /* Smart Battery */ |
db1c291a AS |
519 | static int acpi_battery_add(struct acpi_sbs *sbs, int id) |
520 | { | |
db1c291a | 521 | struct acpi_battery *battery = &sbs->battery[id]; |
94f6c086 AS |
522 | int result; |
523 | ||
3f86b832 RT |
524 | battery->id = id; |
525 | battery->sbs = sbs; | |
db1c291a AS |
526 | result = acpi_battery_read(battery); |
527 | if (result) | |
528 | return result; | |
3f86b832 | 529 | |
db1c291a | 530 | sprintf(battery->name, ACPI_BATTERY_DIR_NAME, id); |
94f6c086 AS |
531 | battery->bat.name = battery->name; |
532 | battery->bat.type = POWER_SUPPLY_TYPE_BATTERY; | |
533 | if (!acpi_battery_mode(battery)) { | |
534 | battery->bat.properties = sbs_charge_battery_props; | |
535 | battery->bat.num_properties = | |
536 | ARRAY_SIZE(sbs_charge_battery_props); | |
537 | } else { | |
538 | battery->bat.properties = sbs_energy_battery_props; | |
539 | battery->bat.num_properties = | |
540 | ARRAY_SIZE(sbs_energy_battery_props); | |
541 | } | |
542 | battery->bat.get_property = acpi_sbs_battery_get_property; | |
543 | result = power_supply_register(&sbs->device->dev, &battery->bat); | |
037cbc63 JG |
544 | if (result) |
545 | goto end; | |
9faf6136 | 546 | |
037cbc63 JG |
547 | result = device_create_file(battery->bat.dev, &alarm_attr); |
548 | if (result) | |
549 | goto end; | |
550 | battery->have_sysfs_alarm = 1; | |
551 | end: | |
72206233 | 552 | printk(KERN_INFO PREFIX "%s [%s]: Battery Slot [%s] (battery %s)\n", |
db1c291a | 553 | ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device), |
bbafbecb | 554 | battery->name, battery->present ? "present" : "absent"); |
635227ee | 555 | return result; |
3f86b832 RT |
556 | } |
557 | ||
558 | static void acpi_battery_remove(struct acpi_sbs *sbs, int id) | |
559 | { | |
037cbc63 | 560 | struct acpi_battery *battery = &sbs->battery[id]; |
c19bdb61 | 561 | |
037cbc63 JG |
562 | if (battery->bat.dev) { |
563 | if (battery->have_sysfs_alarm) | |
564 | device_remove_file(battery->bat.dev, &alarm_attr); | |
565 | power_supply_unregister(&battery->bat); | |
3f86b832 RT |
566 | } |
567 | } | |
568 | ||
db1c291a | 569 | static int acpi_charger_add(struct acpi_sbs *sbs) |
3f86b832 RT |
570 | { |
571 | int result; | |
572 | ||
3f86b832 | 573 | result = acpi_ac_get_present(sbs); |
db1c291a | 574 | if (result) |
3f86b832 | 575 | goto end; |
2a68b995 | 576 | |
3031cdde | 577 | sbs->charger_exists = 1; |
94f6c086 AS |
578 | sbs->charger.name = "sbs-charger"; |
579 | sbs->charger.type = POWER_SUPPLY_TYPE_MAINS; | |
580 | sbs->charger.properties = sbs_ac_props; | |
581 | sbs->charger.num_properties = ARRAY_SIZE(sbs_ac_props); | |
582 | sbs->charger.get_property = sbs_get_ac_property; | |
583 | power_supply_register(&sbs->device->dev, &sbs->charger); | |
72206233 VL |
584 | printk(KERN_INFO PREFIX "%s [%s]: AC Adapter [%s] (%s)\n", |
585 | ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device), | |
89862e3b | 586 | ACPI_AC_DIR_NAME, sbs->charger_present ? "on-line" : "off-line"); |
3f86b832 | 587 | end: |
635227ee | 588 | return result; |
3f86b832 RT |
589 | } |
590 | ||
db1c291a | 591 | static void acpi_charger_remove(struct acpi_sbs *sbs) |
3f86b832 | 592 | { |
94f6c086 AS |
593 | if (sbs->charger.dev) |
594 | power_supply_unregister(&sbs->charger); | |
3f86b832 RT |
595 | } |
596 | ||
e5685b9d | 597 | static void acpi_sbs_callback(void *context) |
3f86b832 | 598 | { |
db1c291a AS |
599 | int id; |
600 | struct acpi_sbs *sbs = context; | |
601 | struct acpi_battery *bat; | |
602 | u8 saved_charger_state = sbs->charger_present; | |
603 | u8 saved_battery_state; | |
3031cdde MG |
604 | |
605 | if (sbs->charger_exists) { | |
606 | acpi_ac_get_present(sbs); | |
607 | if (sbs->charger_present != saved_charger_state) | |
608 | kobject_uevent(&sbs->charger.dev->kobj, KOBJ_CHANGE); | |
609 | } | |
1696d9dc | 610 | |
db1c291a AS |
611 | if (sbs->manager_present) { |
612 | for (id = 0; id < MAX_SBS_BAT; ++id) { | |
613 | if (!(sbs->batteries_supported & (1 << id))) | |
614 | continue; | |
615 | bat = &sbs->battery[id]; | |
616 | saved_battery_state = bat->present; | |
617 | acpi_battery_read(bat); | |
618 | if (saved_battery_state == bat->present) | |
619 | continue; | |
94f6c086 | 620 | kobject_uevent(&bat->bat.dev->kobj, KOBJ_CHANGE); |
3f86b832 | 621 | } |
3f86b832 | 622 | } |
3f86b832 RT |
623 | } |
624 | ||
9faf6136 MG |
625 | static int disable_sbs_manager(const struct dmi_system_id *d) |
626 | { | |
627 | sbs_manager_broken = true; | |
628 | return 0; | |
629 | } | |
630 | ||
631 | static struct dmi_system_id acpi_sbs_dmi_table[] = { | |
632 | { | |
633 | .callback = disable_sbs_manager, | |
634 | .ident = "Apple", | |
635 | .matches = { | |
636 | DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc.") | |
637 | }, | |
638 | }, | |
639 | { }, | |
640 | }; | |
641 | ||
3f86b832 RT |
642 | static int acpi_sbs_add(struct acpi_device *device) |
643 | { | |
db1c291a AS |
644 | struct acpi_sbs *sbs; |
645 | int result = 0; | |
6d15702c | 646 | int id; |
3f86b832 | 647 | |
9faf6136 MG |
648 | dmi_check_system(acpi_sbs_dmi_table); |
649 | ||
36bcbec7 | 650 | sbs = kzalloc(sizeof(struct acpi_sbs), GFP_KERNEL); |
3f86b832 | 651 | if (!sbs) { |
72206233 VL |
652 | result = -ENOMEM; |
653 | goto end; | |
3f86b832 | 654 | } |
3f86b832 | 655 | |
db1c291a | 656 | mutex_init(&sbs->lock); |
72206233 | 657 | |
91087dfa | 658 | sbs->hc = acpi_driver_data(device->parent); |
db1c291a | 659 | sbs->device = device; |
3f86b832 RT |
660 | strcpy(acpi_device_name(device), ACPI_SBS_DEVICE_NAME); |
661 | strcpy(acpi_device_class(device), ACPI_SBS_CLASS); | |
db89b4f0 | 662 | device->driver_data = sbs; |
3f86b832 | 663 | |
db1c291a | 664 | result = acpi_charger_add(sbs); |
3031cdde | 665 | if (result && result != -ENODEV) |
72206233 | 666 | goto end; |
3f86b832 | 667 | |
9faf6136 MG |
668 | result = 0; |
669 | ||
670 | if (!sbs_manager_broken) { | |
671 | result = acpi_manager_get_info(sbs); | |
672 | if (!result) { | |
673 | sbs->manager_present = 0; | |
674 | for (id = 0; id < MAX_SBS_BAT; ++id) | |
675 | if ((sbs->batteries_supported & (1 << id))) | |
676 | acpi_battery_add(sbs, id); | |
677 | } | |
678 | } | |
679 | ||
680 | if (!sbs->manager_present) | |
db1c291a | 681 | acpi_battery_add(sbs, 0); |
9faf6136 | 682 | |
db1c291a | 683 | acpi_smbus_register_callback(sbs->hc, acpi_sbs_callback, sbs); |
3f86b832 | 684 | end: |
db1c291a | 685 | if (result) |
51fac838 | 686 | acpi_sbs_remove(device); |
635227ee | 687 | return result; |
3f86b832 RT |
688 | } |
689 | ||
51fac838 | 690 | static int acpi_sbs_remove(struct acpi_device *device) |
3f86b832 | 691 | { |
cece9014 | 692 | struct acpi_sbs *sbs; |
3f86b832 RT |
693 | int id; |
694 | ||
db1c291a | 695 | if (!device) |
963497c1 | 696 | return -EINVAL; |
72206233 | 697 | sbs = acpi_driver_data(device); |
db1c291a | 698 | if (!sbs) |
635227ee | 699 | return -EINVAL; |
db1c291a AS |
700 | mutex_lock(&sbs->lock); |
701 | acpi_smbus_unregister_callback(sbs->hc); | |
702 | for (id = 0; id < MAX_SBS_BAT; ++id) | |
3f86b832 | 703 | acpi_battery_remove(sbs, id); |
db1c291a AS |
704 | acpi_charger_remove(sbs); |
705 | mutex_unlock(&sbs->lock); | |
706 | mutex_destroy(&sbs->lock); | |
3f86b832 | 707 | kfree(sbs); |
635227ee | 708 | return 0; |
3f86b832 RT |
709 | } |
710 | ||
90692404 | 711 | #ifdef CONFIG_PM_SLEEP |
d202f77d | 712 | static int acpi_sbs_resume(struct device *dev) |
72206233 VL |
713 | { |
714 | struct acpi_sbs *sbs; | |
d202f77d | 715 | if (!dev) |
72206233 | 716 | return -EINVAL; |
d202f77d | 717 | sbs = to_acpi_device(dev)->driver_data; |
db1c291a | 718 | acpi_sbs_callback(sbs); |
72206233 VL |
719 | return 0; |
720 | } | |
15029dd7 SK |
721 | #else |
722 | #define acpi_sbs_resume NULL | |
90692404 | 723 | #endif |
72206233 | 724 | |
d202f77d RW |
725 | static SIMPLE_DEV_PM_OPS(acpi_sbs_pm, NULL, acpi_sbs_resume); |
726 | ||
94f6c086 AS |
727 | static struct acpi_driver acpi_sbs_driver = { |
728 | .name = "sbs", | |
729 | .class = ACPI_SBS_CLASS, | |
730 | .ids = sbs_device_ids, | |
731 | .ops = { | |
732 | .add = acpi_sbs_add, | |
733 | .remove = acpi_sbs_remove, | |
94f6c086 | 734 | }, |
d202f77d | 735 | .drv.pm = &acpi_sbs_pm, |
94f6c086 AS |
736 | }; |
737 | ||
3f86b832 RT |
738 | static int __init acpi_sbs_init(void) |
739 | { | |
740 | int result = 0; | |
741 | ||
b20d2aeb LB |
742 | if (acpi_disabled) |
743 | return -ENODEV; | |
2a68b995 | 744 | |
3f86b832 | 745 | result = acpi_bus_register_driver(&acpi_sbs_driver); |
2a68b995 | 746 | if (result < 0) |
635227ee | 747 | return -ENODEV; |
2a68b995 | 748 | |
635227ee | 749 | return 0; |
3f86b832 RT |
750 | } |
751 | ||
752 | static void __exit acpi_sbs_exit(void) | |
753 | { | |
3f86b832 | 754 | acpi_bus_unregister_driver(&acpi_sbs_driver); |
635227ee | 755 | return; |
3f86b832 RT |
756 | } |
757 | ||
758 | module_init(acpi_sbs_init); | |
759 | module_exit(acpi_sbs_exit); |