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Commit | Line | Data |
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c942fddf | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
3f86b832 | 2 | /* |
db1c291a | 3 | * sbs.c - ACPI Smart Battery System Driver ($Revision: 2.0 $) |
3f86b832 | 4 | * |
db1c291a AS |
5 | * Copyright (c) 2007 Alexey Starikovskiy <astarikovskiy@suse.de> |
6 | * Copyright (c) 2005-2007 Vladimir Lebedev <vladimir.p.lebedev@intel.com> | |
3f86b832 | 7 | * Copyright (c) 2005 Rich Townsend <rhdt@bartol.udel.edu> |
3f86b832 RT |
8 | */ |
9 | ||
10 | #include <linux/init.h> | |
5a0e3ad6 | 11 | #include <linux/slab.h> |
3f86b832 RT |
12 | #include <linux/module.h> |
13 | #include <linux/moduleparam.h> | |
14 | #include <linux/kernel.h> | |
94f6c086 | 15 | |
3f86b832 | 16 | #include <linux/acpi.h> |
6d15702c | 17 | #include <linux/timer.h> |
72206233 | 18 | #include <linux/jiffies.h> |
3f86b832 | 19 | #include <linux/delay.h> |
94f6c086 | 20 | #include <linux/power_supply.h> |
630b3aff | 21 | #include <linux/platform_data/x86/apple.h> |
fa93854f | 22 | #include <acpi/battery.h> |
94f6c086 | 23 | |
91087dfa AS |
24 | #include "sbshc.h" |
25 | ||
a192a958 LB |
26 | #define PREFIX "ACPI: " |
27 | ||
3f86b832 RT |
28 | #define ACPI_SBS_CLASS "sbs" |
29 | #define ACPI_AC_CLASS "ac_adapter" | |
3f86b832 | 30 | #define ACPI_SBS_DEVICE_NAME "Smart Battery System" |
3f86b832 RT |
31 | #define ACPI_BATTERY_DIR_NAME "BAT%i" |
32 | #define ACPI_AC_DIR_NAME "AC0" | |
3f86b832 | 33 | |
db1c291a AS |
34 | #define ACPI_SBS_NOTIFY_STATUS 0x80 |
35 | #define ACPI_SBS_NOTIFY_INFO 0x81 | |
3f86b832 | 36 | |
db1c291a | 37 | MODULE_AUTHOR("Alexey Starikovskiy <astarikovskiy@suse.de>"); |
3f86b832 RT |
38 | MODULE_DESCRIPTION("Smart Battery System ACPI interface driver"); |
39 | MODULE_LICENSE("GPL"); | |
40 | ||
db1c291a AS |
41 | static unsigned int cache_time = 1000; |
42 | module_param(cache_time, uint, 0644); | |
43 | MODULE_PARM_DESC(cache_time, "cache time in milliseconds"); | |
6d15702c | 44 | |
db1c291a | 45 | #define MAX_SBS_BAT 4 |
6d15702c VL |
46 | #define ACPI_SBS_BLOCK_MAX 32 |
47 | ||
1ba90e3a | 48 | static const struct acpi_device_id sbs_device_ids[] = { |
91087dfa | 49 | {"ACPI0002", 0}, |
1ba90e3a TR |
50 | {"", 0}, |
51 | }; | |
52 | MODULE_DEVICE_TABLE(acpi, sbs_device_ids); | |
53 | ||
3f86b832 | 54 | struct acpi_battery { |
297d716f KK |
55 | struct power_supply *bat; |
56 | struct power_supply_desc bat_desc; | |
3f86b832 | 57 | struct acpi_sbs *sbs; |
db1c291a AS |
58 | unsigned long update_time; |
59 | char name[8]; | |
89862e3b AS |
60 | char manufacturer_name[ACPI_SBS_BLOCK_MAX]; |
61 | char device_name[ACPI_SBS_BLOCK_MAX]; | |
62 | char device_chemistry[ACPI_SBS_BLOCK_MAX]; | |
94f6c086 | 63 | u16 alarm_capacity; |
89862e3b AS |
64 | u16 full_charge_capacity; |
65 | u16 design_capacity; | |
66 | u16 design_voltage; | |
67 | u16 serial_number; | |
db1c291a AS |
68 | u16 cycle_count; |
69 | u16 temp_now; | |
89862e3b | 70 | u16 voltage_now; |
7faa144a AS |
71 | s16 rate_now; |
72 | s16 rate_avg; | |
89862e3b | 73 | u16 capacity_now; |
db1c291a | 74 | u16 state_of_charge; |
89862e3b | 75 | u16 state; |
89862e3b | 76 | u16 mode; |
db1c291a | 77 | u16 spec; |
89862e3b | 78 | u8 id; |
89862e3b | 79 | u8 present:1; |
037cbc63 | 80 | u8 have_sysfs_alarm:1; |
3f86b832 RT |
81 | }; |
82 | ||
297d716f | 83 | #define to_acpi_battery(x) power_supply_get_drvdata(x) |
94f6c086 | 84 | |
3f86b832 | 85 | struct acpi_sbs { |
297d716f | 86 | struct power_supply *charger; |
3f86b832 | 87 | struct acpi_device *device; |
91087dfa | 88 | struct acpi_smb_hc *hc; |
db1c291a | 89 | struct mutex lock; |
3f86b832 | 90 | struct acpi_battery battery[MAX_SBS_BAT]; |
db1c291a | 91 | u8 batteries_supported:4; |
89862e3b AS |
92 | u8 manager_present:1; |
93 | u8 charger_present:1; | |
3031cdde | 94 | u8 charger_exists:1; |
3f86b832 RT |
95 | }; |
96 | ||
297d716f | 97 | #define to_acpi_sbs(x) power_supply_get_drvdata(x) |
94f6c086 | 98 | |
51fac838 | 99 | static int acpi_sbs_remove(struct acpi_device *device); |
1dd5c715 LT |
100 | static int acpi_battery_get_state(struct acpi_battery *battery); |
101 | ||
db1c291a | 102 | static inline int battery_scale(int log) |
72206233 | 103 | { |
db1c291a AS |
104 | int scale = 1; |
105 | while (log--) | |
106 | scale *= 10; | |
107 | return scale; | |
72206233 VL |
108 | } |
109 | ||
db1c291a | 110 | static inline int acpi_battery_vscale(struct acpi_battery *battery) |
72206233 | 111 | { |
db1c291a | 112 | return battery_scale((battery->spec & 0x0f00) >> 8); |
72206233 VL |
113 | } |
114 | ||
db1c291a | 115 | static inline int acpi_battery_ipscale(struct acpi_battery *battery) |
72206233 | 116 | { |
db1c291a | 117 | return battery_scale((battery->spec & 0xf000) >> 12); |
72206233 VL |
118 | } |
119 | ||
db1c291a | 120 | static inline int acpi_battery_mode(struct acpi_battery *battery) |
72206233 | 121 | { |
db1c291a | 122 | return (battery->mode & 0x8000); |
72206233 | 123 | } |
3f86b832 | 124 | |
db1c291a | 125 | static inline int acpi_battery_scale(struct acpi_battery *battery) |
3f86b832 | 126 | { |
db1c291a AS |
127 | return (acpi_battery_mode(battery) ? 10 : 1) * |
128 | acpi_battery_ipscale(battery); | |
3f86b832 RT |
129 | } |
130 | ||
94f6c086 AS |
131 | static int sbs_get_ac_property(struct power_supply *psy, |
132 | enum power_supply_property psp, | |
133 | union power_supply_propval *val) | |
134 | { | |
135 | struct acpi_sbs *sbs = to_acpi_sbs(psy); | |
136 | switch (psp) { | |
137 | case POWER_SUPPLY_PROP_ONLINE: | |
138 | val->intval = sbs->charger_present; | |
139 | break; | |
140 | default: | |
141 | return -EINVAL; | |
142 | } | |
143 | return 0; | |
144 | } | |
145 | ||
146 | static int acpi_battery_technology(struct acpi_battery *battery) | |
147 | { | |
148 | if (!strcasecmp("NiCd", battery->device_chemistry)) | |
149 | return POWER_SUPPLY_TECHNOLOGY_NiCd; | |
150 | if (!strcasecmp("NiMH", battery->device_chemistry)) | |
151 | return POWER_SUPPLY_TECHNOLOGY_NiMH; | |
152 | if (!strcasecmp("LION", battery->device_chemistry)) | |
153 | return POWER_SUPPLY_TECHNOLOGY_LION; | |
154 | if (!strcasecmp("LiP", battery->device_chemistry)) | |
155 | return POWER_SUPPLY_TECHNOLOGY_LIPO; | |
156 | return POWER_SUPPLY_TECHNOLOGY_UNKNOWN; | |
157 | } | |
158 | ||
159 | static int acpi_sbs_battery_get_property(struct power_supply *psy, | |
160 | enum power_supply_property psp, | |
161 | union power_supply_propval *val) | |
162 | { | |
163 | struct acpi_battery *battery = to_acpi_battery(psy); | |
164 | ||
165 | if ((!battery->present) && psp != POWER_SUPPLY_PROP_PRESENT) | |
166 | return -ENODEV; | |
1dd5c715 LT |
167 | |
168 | acpi_battery_get_state(battery); | |
94f6c086 AS |
169 | switch (psp) { |
170 | case POWER_SUPPLY_PROP_STATUS: | |
7faa144a | 171 | if (battery->rate_now < 0) |
94f6c086 | 172 | val->intval = POWER_SUPPLY_STATUS_DISCHARGING; |
7faa144a | 173 | else if (battery->rate_now > 0) |
94f6c086 AS |
174 | val->intval = POWER_SUPPLY_STATUS_CHARGING; |
175 | else | |
176 | val->intval = POWER_SUPPLY_STATUS_FULL; | |
177 | break; | |
178 | case POWER_SUPPLY_PROP_PRESENT: | |
179 | val->intval = battery->present; | |
180 | break; | |
181 | case POWER_SUPPLY_PROP_TECHNOLOGY: | |
182 | val->intval = acpi_battery_technology(battery); | |
183 | break; | |
16698857 AS |
184 | case POWER_SUPPLY_PROP_CYCLE_COUNT: |
185 | val->intval = battery->cycle_count; | |
186 | break; | |
94f6c086 AS |
187 | case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: |
188 | val->intval = battery->design_voltage * | |
189 | acpi_battery_vscale(battery) * 1000; | |
190 | break; | |
191 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
192 | val->intval = battery->voltage_now * | |
193 | acpi_battery_vscale(battery) * 1000; | |
194 | break; | |
195 | case POWER_SUPPLY_PROP_CURRENT_NOW: | |
7faa144a AS |
196 | case POWER_SUPPLY_PROP_POWER_NOW: |
197 | val->intval = abs(battery->rate_now) * | |
94f6c086 | 198 | acpi_battery_ipscale(battery) * 1000; |
e4108292 LT |
199 | val->intval *= (acpi_battery_mode(battery)) ? |
200 | (battery->voltage_now * | |
201 | acpi_battery_vscale(battery) / 1000) : 1; | |
94f6c086 AS |
202 | break; |
203 | case POWER_SUPPLY_PROP_CURRENT_AVG: | |
7faa144a AS |
204 | case POWER_SUPPLY_PROP_POWER_AVG: |
205 | val->intval = abs(battery->rate_avg) * | |
94f6c086 | 206 | acpi_battery_ipscale(battery) * 1000; |
e4108292 LT |
207 | val->intval *= (acpi_battery_mode(battery)) ? |
208 | (battery->voltage_now * | |
209 | acpi_battery_vscale(battery) / 1000) : 1; | |
94f6c086 AS |
210 | break; |
211 | case POWER_SUPPLY_PROP_CAPACITY: | |
212 | val->intval = battery->state_of_charge; | |
213 | break; | |
214 | case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: | |
215 | case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: | |
216 | val->intval = battery->design_capacity * | |
217 | acpi_battery_scale(battery) * 1000; | |
218 | break; | |
219 | case POWER_SUPPLY_PROP_CHARGE_FULL: | |
220 | case POWER_SUPPLY_PROP_ENERGY_FULL: | |
221 | val->intval = battery->full_charge_capacity * | |
222 | acpi_battery_scale(battery) * 1000; | |
223 | break; | |
224 | case POWER_SUPPLY_PROP_CHARGE_NOW: | |
225 | case POWER_SUPPLY_PROP_ENERGY_NOW: | |
226 | val->intval = battery->capacity_now * | |
227 | acpi_battery_scale(battery) * 1000; | |
228 | break; | |
229 | case POWER_SUPPLY_PROP_TEMP: | |
230 | val->intval = battery->temp_now - 2730; // dK -> dC | |
231 | break; | |
232 | case POWER_SUPPLY_PROP_MODEL_NAME: | |
233 | val->strval = battery->device_name; | |
234 | break; | |
235 | case POWER_SUPPLY_PROP_MANUFACTURER: | |
236 | val->strval = battery->manufacturer_name; | |
237 | break; | |
238 | default: | |
239 | return -EINVAL; | |
240 | } | |
241 | return 0; | |
242 | } | |
243 | ||
244 | static enum power_supply_property sbs_ac_props[] = { | |
245 | POWER_SUPPLY_PROP_ONLINE, | |
246 | }; | |
247 | ||
248 | static enum power_supply_property sbs_charge_battery_props[] = { | |
249 | POWER_SUPPLY_PROP_STATUS, | |
250 | POWER_SUPPLY_PROP_PRESENT, | |
251 | POWER_SUPPLY_PROP_TECHNOLOGY, | |
16698857 | 252 | POWER_SUPPLY_PROP_CYCLE_COUNT, |
94f6c086 AS |
253 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, |
254 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
255 | POWER_SUPPLY_PROP_CURRENT_NOW, | |
256 | POWER_SUPPLY_PROP_CURRENT_AVG, | |
257 | POWER_SUPPLY_PROP_CAPACITY, | |
258 | POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, | |
259 | POWER_SUPPLY_PROP_CHARGE_FULL, | |
260 | POWER_SUPPLY_PROP_CHARGE_NOW, | |
261 | POWER_SUPPLY_PROP_TEMP, | |
262 | POWER_SUPPLY_PROP_MODEL_NAME, | |
263 | POWER_SUPPLY_PROP_MANUFACTURER, | |
264 | }; | |
265 | ||
266 | static enum power_supply_property sbs_energy_battery_props[] = { | |
267 | POWER_SUPPLY_PROP_STATUS, | |
268 | POWER_SUPPLY_PROP_PRESENT, | |
269 | POWER_SUPPLY_PROP_TECHNOLOGY, | |
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, | |
7faa144a AS |
274 | POWER_SUPPLY_PROP_POWER_NOW, |
275 | POWER_SUPPLY_PROP_POWER_AVG, | |
94f6c086 AS |
276 | POWER_SUPPLY_PROP_CAPACITY, |
277 | POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, | |
278 | POWER_SUPPLY_PROP_ENERGY_FULL, | |
279 | POWER_SUPPLY_PROP_ENERGY_NOW, | |
280 | POWER_SUPPLY_PROP_TEMP, | |
281 | POWER_SUPPLY_PROP_MODEL_NAME, | |
282 | POWER_SUPPLY_PROP_MANUFACTURER, | |
283 | }; | |
7faa144a | 284 | |
297d716f KK |
285 | static const struct power_supply_desc acpi_sbs_charger_desc = { |
286 | .name = "sbs-charger", | |
287 | .type = POWER_SUPPLY_TYPE_MAINS, | |
288 | .properties = sbs_ac_props, | |
289 | .num_properties = ARRAY_SIZE(sbs_ac_props), | |
290 | .get_property = sbs_get_ac_property, | |
291 | }; | |
94f6c086 | 292 | |
db1c291a AS |
293 | /* -------------------------------------------------------------------------- |
294 | Smart Battery System Management | |
295 | -------------------------------------------------------------------------- */ | |
3f86b832 | 296 | |
db1c291a AS |
297 | struct acpi_battery_reader { |
298 | u8 command; /* command for battery */ | |
299 | u8 mode; /* word or block? */ | |
300 | size_t offset; /* offset inside struct acpi_sbs_battery */ | |
301 | }; | |
3f86b832 | 302 | |
db1c291a AS |
303 | static struct acpi_battery_reader info_readers[] = { |
304 | {0x01, SMBUS_READ_WORD, offsetof(struct acpi_battery, alarm_capacity)}, | |
305 | {0x03, SMBUS_READ_WORD, offsetof(struct acpi_battery, mode)}, | |
306 | {0x10, SMBUS_READ_WORD, offsetof(struct acpi_battery, full_charge_capacity)}, | |
307 | {0x17, SMBUS_READ_WORD, offsetof(struct acpi_battery, cycle_count)}, | |
308 | {0x18, SMBUS_READ_WORD, offsetof(struct acpi_battery, design_capacity)}, | |
309 | {0x19, SMBUS_READ_WORD, offsetof(struct acpi_battery, design_voltage)}, | |
310 | {0x1a, SMBUS_READ_WORD, offsetof(struct acpi_battery, spec)}, | |
311 | {0x1c, SMBUS_READ_WORD, offsetof(struct acpi_battery, serial_number)}, | |
312 | {0x20, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, manufacturer_name)}, | |
313 | {0x21, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, device_name)}, | |
314 | {0x22, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, device_chemistry)}, | |
315 | }; | |
3f86b832 | 316 | |
db1c291a AS |
317 | static struct acpi_battery_reader state_readers[] = { |
318 | {0x08, SMBUS_READ_WORD, offsetof(struct acpi_battery, temp_now)}, | |
319 | {0x09, SMBUS_READ_WORD, offsetof(struct acpi_battery, voltage_now)}, | |
7faa144a AS |
320 | {0x0a, SMBUS_READ_WORD, offsetof(struct acpi_battery, rate_now)}, |
321 | {0x0b, SMBUS_READ_WORD, offsetof(struct acpi_battery, rate_avg)}, | |
db1c291a AS |
322 | {0x0f, SMBUS_READ_WORD, offsetof(struct acpi_battery, capacity_now)}, |
323 | {0x0e, SMBUS_READ_WORD, offsetof(struct acpi_battery, state_of_charge)}, | |
324 | {0x16, SMBUS_READ_WORD, offsetof(struct acpi_battery, state)}, | |
325 | }; | |
3f86b832 | 326 | |
db1c291a | 327 | static int acpi_manager_get_info(struct acpi_sbs *sbs) |
3f86b832 | 328 | { |
3f86b832 | 329 | int result = 0; |
db1c291a | 330 | u16 battery_system_info; |
3f86b832 | 331 | |
db1c291a | 332 | result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER, |
94f6c086 | 333 | 0x04, (u8 *)&battery_system_info); |
db1c291a AS |
334 | if (!result) |
335 | sbs->batteries_supported = battery_system_info & 0x000f; | |
635227ee | 336 | return result; |
3f86b832 RT |
337 | } |
338 | ||
339 | static int acpi_battery_get_info(struct acpi_battery *battery) | |
340 | { | |
db1c291a | 341 | int i, result = 0; |
3f86b832 | 342 | |
db1c291a | 343 | for (i = 0; i < ARRAY_SIZE(info_readers); ++i) { |
94f6c086 AS |
344 | result = acpi_smbus_read(battery->sbs->hc, |
345 | info_readers[i].mode, | |
346 | ACPI_SBS_BATTERY, | |
347 | info_readers[i].command, | |
348 | (u8 *) battery + | |
349 | info_readers[i].offset); | |
db1c291a AS |
350 | if (result) |
351 | break; | |
3f86b832 | 352 | } |
635227ee | 353 | return result; |
3f86b832 RT |
354 | } |
355 | ||
3f86b832 RT |
356 | static int acpi_battery_get_state(struct acpi_battery *battery) |
357 | { | |
db1c291a | 358 | int i, result = 0; |
3f86b832 | 359 | |
94f6c086 AS |
360 | if (battery->update_time && |
361 | time_before(jiffies, battery->update_time + | |
db1c291a AS |
362 | msecs_to_jiffies(cache_time))) |
363 | return 0; | |
364 | for (i = 0; i < ARRAY_SIZE(state_readers); ++i) { | |
365 | result = acpi_smbus_read(battery->sbs->hc, | |
366 | state_readers[i].mode, | |
367 | ACPI_SBS_BATTERY, | |
368 | state_readers[i].command, | |
c6237b21 | 369 | (u8 *)battery + |
db1c291a AS |
370 | state_readers[i].offset); |
371 | if (result) | |
3f86b832 | 372 | goto end; |
3f86b832 | 373 | } |
3f86b832 | 374 | end: |
db1c291a | 375 | battery->update_time = jiffies; |
635227ee | 376 | return result; |
3f86b832 RT |
377 | } |
378 | ||
db1c291a | 379 | static int acpi_battery_get_alarm(struct acpi_battery *battery) |
3f86b832 | 380 | { |
db1c291a AS |
381 | return acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, |
382 | ACPI_SBS_BATTERY, 0x01, | |
94f6c086 | 383 | (u8 *)&battery->alarm_capacity); |
3f86b832 RT |
384 | } |
385 | ||
db1c291a | 386 | static int acpi_battery_set_alarm(struct acpi_battery *battery) |
3f86b832 | 387 | { |
db1c291a | 388 | struct acpi_sbs *sbs = battery->sbs; |
94f6c086 AS |
389 | u16 value, sel = 1 << (battery->id + 12); |
390 | ||
391 | int ret; | |
392 | ||
3f86b832 | 393 | |
db1c291a | 394 | if (sbs->manager_present) { |
94f6c086 | 395 | ret = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER, |
db1c291a | 396 | 0x01, (u8 *)&value); |
94f6c086 AS |
397 | if (ret) |
398 | goto end; | |
399 | if ((value & 0xf000) != sel) { | |
400 | value &= 0x0fff; | |
401 | value |= sel; | |
a84bc8cf | 402 | ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, |
94f6c086 AS |
403 | ACPI_SBS_MANAGER, |
404 | 0x01, (u8 *)&value, 2); | |
a84bc8cf CIK |
405 | if (ret) |
406 | goto end; | |
94f6c086 | 407 | } |
3f86b832 | 408 | } |
94f6c086 AS |
409 | ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, ACPI_SBS_BATTERY, |
410 | 0x01, (u8 *)&battery->alarm_capacity, 2); | |
411 | end: | |
412 | return ret; | |
3f86b832 RT |
413 | } |
414 | ||
415 | static int acpi_ac_get_present(struct acpi_sbs *sbs) | |
416 | { | |
db1c291a AS |
417 | int result; |
418 | u16 status; | |
3f86b832 | 419 | |
db1c291a AS |
420 | result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_CHARGER, |
421 | 0x13, (u8 *) & status); | |
3031cdde MG |
422 | |
423 | if (result) | |
424 | return result; | |
425 | ||
426 | /* | |
427 | * The spec requires that bit 4 always be 1. If it's not set, assume | |
ca1721c5 RT |
428 | * that the implementation doesn't support an SBS charger. |
429 | * | |
430 | * And on some MacBooks a status of 0xffff is always returned, no | |
431 | * matter whether the charger is plugged in or not, which is also | |
432 | * wrong, so ignore the SBS charger for those too. | |
3031cdde | 433 | */ |
ca1721c5 | 434 | if (!((status >> 4) & 0x1) || status == 0xffff) |
3031cdde MG |
435 | return -ENODEV; |
436 | ||
437 | sbs->charger_present = (status >> 15) & 0x1; | |
438 | return 0; | |
3f86b832 RT |
439 | } |
440 | ||
8bd95532 AS |
441 | static ssize_t acpi_battery_alarm_show(struct device *dev, |
442 | struct device_attribute *attr, | |
443 | char *buf) | |
444 | { | |
445 | struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev)); | |
446 | acpi_battery_get_alarm(battery); | |
447 | return sprintf(buf, "%d\n", battery->alarm_capacity * | |
448 | acpi_battery_scale(battery) * 1000); | |
449 | } | |
450 | ||
451 | static ssize_t acpi_battery_alarm_store(struct device *dev, | |
452 | struct device_attribute *attr, | |
453 | const char *buf, size_t count) | |
454 | { | |
455 | unsigned long x; | |
456 | struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev)); | |
32a90512 | 457 | if (sscanf(buf, "%lu\n", &x) == 1) |
8bd95532 AS |
458 | battery->alarm_capacity = x / |
459 | (1000 * acpi_battery_scale(battery)); | |
460 | if (battery->present) | |
461 | acpi_battery_set_alarm(battery); | |
462 | return count; | |
463 | } | |
464 | ||
82d2b610 | 465 | static const struct device_attribute alarm_attr = { |
01e8ef11 | 466 | .attr = {.name = "alarm", .mode = 0644}, |
8bd95532 AS |
467 | .show = acpi_battery_alarm_show, |
468 | .store = acpi_battery_alarm_store, | |
469 | }; | |
470 | ||
3f86b832 RT |
471 | /* -------------------------------------------------------------------------- |
472 | Driver Interface | |
473 | -------------------------------------------------------------------------- */ | |
db1c291a | 474 | static int acpi_battery_read(struct acpi_battery *battery) |
3f86b832 | 475 | { |
db1c291a AS |
476 | int result = 0, saved_present = battery->present; |
477 | u16 state; | |
3f86b832 | 478 | |
db1c291a AS |
479 | if (battery->sbs->manager_present) { |
480 | result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, | |
481 | ACPI_SBS_MANAGER, 0x01, (u8 *)&state); | |
482 | if (!result) | |
483 | battery->present = state & (1 << battery->id); | |
484 | state &= 0x0fff; | |
485 | state |= 1 << (battery->id + 12); | |
486 | acpi_smbus_write(battery->sbs->hc, SMBUS_WRITE_WORD, | |
487 | ACPI_SBS_MANAGER, 0x01, (u8 *)&state, 2); | |
488 | } else if (battery->id == 0) | |
489 | battery->present = 1; | |
9faf6136 | 490 | |
db1c291a AS |
491 | if (result || !battery->present) |
492 | return result; | |
3f86b832 | 493 | |
db1c291a AS |
494 | if (saved_present != battery->present) { |
495 | battery->update_time = 0; | |
496 | result = acpi_battery_get_info(battery); | |
9faf6136 MG |
497 | if (result) { |
498 | battery->present = 0; | |
db1c291a | 499 | return result; |
9faf6136 | 500 | } |
db1c291a AS |
501 | } |
502 | result = acpi_battery_get_state(battery); | |
9faf6136 MG |
503 | if (result) |
504 | battery->present = 0; | |
db1c291a AS |
505 | return result; |
506 | } | |
3f86b832 | 507 | |
94f6c086 | 508 | /* Smart Battery */ |
db1c291a AS |
509 | static int acpi_battery_add(struct acpi_sbs *sbs, int id) |
510 | { | |
db1c291a | 511 | struct acpi_battery *battery = &sbs->battery[id]; |
297d716f | 512 | struct power_supply_config psy_cfg = { .drv_data = battery, }; |
94f6c086 AS |
513 | int result; |
514 | ||
3f86b832 RT |
515 | battery->id = id; |
516 | battery->sbs = sbs; | |
db1c291a AS |
517 | result = acpi_battery_read(battery); |
518 | if (result) | |
519 | return result; | |
3f86b832 | 520 | |
db1c291a | 521 | sprintf(battery->name, ACPI_BATTERY_DIR_NAME, id); |
297d716f KK |
522 | battery->bat_desc.name = battery->name; |
523 | battery->bat_desc.type = POWER_SUPPLY_TYPE_BATTERY; | |
94f6c086 | 524 | if (!acpi_battery_mode(battery)) { |
297d716f KK |
525 | battery->bat_desc.properties = sbs_charge_battery_props; |
526 | battery->bat_desc.num_properties = | |
94f6c086 AS |
527 | ARRAY_SIZE(sbs_charge_battery_props); |
528 | } else { | |
297d716f KK |
529 | battery->bat_desc.properties = sbs_energy_battery_props; |
530 | battery->bat_desc.num_properties = | |
94f6c086 AS |
531 | ARRAY_SIZE(sbs_energy_battery_props); |
532 | } | |
297d716f KK |
533 | battery->bat_desc.get_property = acpi_sbs_battery_get_property; |
534 | battery->bat = power_supply_register(&sbs->device->dev, | |
535 | &battery->bat_desc, &psy_cfg); | |
536 | if (IS_ERR(battery->bat)) { | |
537 | result = PTR_ERR(battery->bat); | |
538 | battery->bat = NULL; | |
037cbc63 | 539 | goto end; |
297d716f | 540 | } |
9faf6136 | 541 | |
297d716f | 542 | result = device_create_file(&battery->bat->dev, &alarm_attr); |
037cbc63 JG |
543 | if (result) |
544 | goto end; | |
545 | battery->have_sysfs_alarm = 1; | |
546 | end: | |
72206233 | 547 | printk(KERN_INFO PREFIX "%s [%s]: Battery Slot [%s] (battery %s)\n", |
db1c291a | 548 | ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device), |
bbafbecb | 549 | battery->name, battery->present ? "present" : "absent"); |
635227ee | 550 | return result; |
3f86b832 RT |
551 | } |
552 | ||
553 | static void acpi_battery_remove(struct acpi_sbs *sbs, int id) | |
554 | { | |
037cbc63 | 555 | struct acpi_battery *battery = &sbs->battery[id]; |
c19bdb61 | 556 | |
297d716f | 557 | if (battery->bat) { |
037cbc63 | 558 | if (battery->have_sysfs_alarm) |
297d716f KK |
559 | device_remove_file(&battery->bat->dev, &alarm_attr); |
560 | power_supply_unregister(battery->bat); | |
3f86b832 RT |
561 | } |
562 | } | |
563 | ||
db1c291a | 564 | static int acpi_charger_add(struct acpi_sbs *sbs) |
3f86b832 RT |
565 | { |
566 | int result; | |
297d716f | 567 | struct power_supply_config psy_cfg = { .drv_data = sbs, }; |
3f86b832 | 568 | |
3f86b832 | 569 | result = acpi_ac_get_present(sbs); |
db1c291a | 570 | if (result) |
3f86b832 | 571 | goto end; |
2a68b995 | 572 | |
3031cdde | 573 | sbs->charger_exists = 1; |
297d716f KK |
574 | sbs->charger = power_supply_register(&sbs->device->dev, |
575 | &acpi_sbs_charger_desc, &psy_cfg); | |
576 | if (IS_ERR(sbs->charger)) { | |
577 | result = PTR_ERR(sbs->charger); | |
578 | sbs->charger = NULL; | |
579 | } | |
72206233 VL |
580 | printk(KERN_INFO PREFIX "%s [%s]: AC Adapter [%s] (%s)\n", |
581 | ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device), | |
89862e3b | 582 | ACPI_AC_DIR_NAME, sbs->charger_present ? "on-line" : "off-line"); |
3f86b832 | 583 | end: |
635227ee | 584 | return result; |
3f86b832 RT |
585 | } |
586 | ||
db1c291a | 587 | static void acpi_charger_remove(struct acpi_sbs *sbs) |
3f86b832 | 588 | { |
297d716f KK |
589 | if (sbs->charger) |
590 | power_supply_unregister(sbs->charger); | |
3f86b832 RT |
591 | } |
592 | ||
e5685b9d | 593 | static void acpi_sbs_callback(void *context) |
3f86b832 | 594 | { |
db1c291a AS |
595 | int id; |
596 | struct acpi_sbs *sbs = context; | |
597 | struct acpi_battery *bat; | |
598 | u8 saved_charger_state = sbs->charger_present; | |
599 | u8 saved_battery_state; | |
3031cdde MG |
600 | |
601 | if (sbs->charger_exists) { | |
602 | acpi_ac_get_present(sbs); | |
603 | if (sbs->charger_present != saved_charger_state) | |
297d716f | 604 | kobject_uevent(&sbs->charger->dev.kobj, KOBJ_CHANGE); |
3031cdde | 605 | } |
1696d9dc | 606 | |
db1c291a AS |
607 | if (sbs->manager_present) { |
608 | for (id = 0; id < MAX_SBS_BAT; ++id) { | |
609 | if (!(sbs->batteries_supported & (1 << id))) | |
610 | continue; | |
611 | bat = &sbs->battery[id]; | |
612 | saved_battery_state = bat->present; | |
613 | acpi_battery_read(bat); | |
614 | if (saved_battery_state == bat->present) | |
615 | continue; | |
297d716f | 616 | kobject_uevent(&bat->bat->dev.kobj, KOBJ_CHANGE); |
3f86b832 | 617 | } |
3f86b832 | 618 | } |
3f86b832 RT |
619 | } |
620 | ||
3f86b832 RT |
621 | static int acpi_sbs_add(struct acpi_device *device) |
622 | { | |
db1c291a AS |
623 | struct acpi_sbs *sbs; |
624 | int result = 0; | |
6d15702c | 625 | int id; |
3f86b832 | 626 | |
36bcbec7 | 627 | sbs = kzalloc(sizeof(struct acpi_sbs), GFP_KERNEL); |
3f86b832 | 628 | if (!sbs) { |
72206233 VL |
629 | result = -ENOMEM; |
630 | goto end; | |
3f86b832 | 631 | } |
3f86b832 | 632 | |
db1c291a | 633 | mutex_init(&sbs->lock); |
72206233 | 634 | |
91087dfa | 635 | sbs->hc = acpi_driver_data(device->parent); |
db1c291a | 636 | sbs->device = device; |
3f86b832 RT |
637 | strcpy(acpi_device_name(device), ACPI_SBS_DEVICE_NAME); |
638 | strcpy(acpi_device_class(device), ACPI_SBS_CLASS); | |
db89b4f0 | 639 | device->driver_data = sbs; |
3f86b832 | 640 | |
db1c291a | 641 | result = acpi_charger_add(sbs); |
3031cdde | 642 | if (result && result != -ENODEV) |
72206233 | 643 | goto end; |
3f86b832 | 644 | |
9faf6136 MG |
645 | result = 0; |
646 | ||
630b3aff | 647 | if (!x86_apple_machine) { |
9faf6136 MG |
648 | result = acpi_manager_get_info(sbs); |
649 | if (!result) { | |
61f8ff69 | 650 | sbs->manager_present = 1; |
9faf6136 MG |
651 | for (id = 0; id < MAX_SBS_BAT; ++id) |
652 | if ((sbs->batteries_supported & (1 << id))) | |
653 | acpi_battery_add(sbs, id); | |
654 | } | |
655 | } | |
656 | ||
657 | if (!sbs->manager_present) | |
db1c291a | 658 | acpi_battery_add(sbs, 0); |
9faf6136 | 659 | |
db1c291a | 660 | acpi_smbus_register_callback(sbs->hc, acpi_sbs_callback, sbs); |
3f86b832 | 661 | end: |
db1c291a | 662 | if (result) |
51fac838 | 663 | acpi_sbs_remove(device); |
635227ee | 664 | return result; |
3f86b832 RT |
665 | } |
666 | ||
51fac838 | 667 | static int acpi_sbs_remove(struct acpi_device *device) |
3f86b832 | 668 | { |
cece9014 | 669 | struct acpi_sbs *sbs; |
3f86b832 RT |
670 | int id; |
671 | ||
db1c291a | 672 | if (!device) |
963497c1 | 673 | return -EINVAL; |
72206233 | 674 | sbs = acpi_driver_data(device); |
db1c291a | 675 | if (!sbs) |
635227ee | 676 | return -EINVAL; |
db1c291a AS |
677 | mutex_lock(&sbs->lock); |
678 | acpi_smbus_unregister_callback(sbs->hc); | |
679 | for (id = 0; id < MAX_SBS_BAT; ++id) | |
3f86b832 | 680 | acpi_battery_remove(sbs, id); |
db1c291a AS |
681 | acpi_charger_remove(sbs); |
682 | mutex_unlock(&sbs->lock); | |
683 | mutex_destroy(&sbs->lock); | |
3f86b832 | 684 | kfree(sbs); |
635227ee | 685 | return 0; |
3f86b832 RT |
686 | } |
687 | ||
90692404 | 688 | #ifdef CONFIG_PM_SLEEP |
d202f77d | 689 | static int acpi_sbs_resume(struct device *dev) |
72206233 VL |
690 | { |
691 | struct acpi_sbs *sbs; | |
d202f77d | 692 | if (!dev) |
72206233 | 693 | return -EINVAL; |
d202f77d | 694 | sbs = to_acpi_device(dev)->driver_data; |
db1c291a | 695 | acpi_sbs_callback(sbs); |
72206233 VL |
696 | return 0; |
697 | } | |
15029dd7 SK |
698 | #else |
699 | #define acpi_sbs_resume NULL | |
90692404 | 700 | #endif |
72206233 | 701 | |
d202f77d RW |
702 | static SIMPLE_DEV_PM_OPS(acpi_sbs_pm, NULL, acpi_sbs_resume); |
703 | ||
94f6c086 AS |
704 | static struct acpi_driver acpi_sbs_driver = { |
705 | .name = "sbs", | |
706 | .class = ACPI_SBS_CLASS, | |
707 | .ids = sbs_device_ids, | |
708 | .ops = { | |
709 | .add = acpi_sbs_add, | |
710 | .remove = acpi_sbs_remove, | |
94f6c086 | 711 | }, |
d202f77d | 712 | .drv.pm = &acpi_sbs_pm, |
94f6c086 | 713 | }; |
e882b095 | 714 | module_acpi_driver(acpi_sbs_driver); |