1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * TI BQ24257 charger driver |
4 | * |
5 | * Copyright (C) 2015 Intel Corporation |
6 | * |
7 | * Datasheets: |
8 | * https://www.ti.com/product/bq24250 |
9 | * https://www.ti.com/product/bq24251 |
10 | * https://www.ti.com/product/bq24257 |
11 | */ |
12 | |
13 | #include <linux/module.h> |
14 | #include <linux/i2c.h> |
15 | #include <linux/power_supply.h> |
16 | #include <linux/regmap.h> |
17 | #include <linux/types.h> |
18 | #include <linux/gpio/consumer.h> |
19 | #include <linux/interrupt.h> |
20 | #include <linux/delay.h> |
21 | |
22 | #include <linux/acpi.h> |
23 | #include <linux/of.h> |
24 | |
25 | #define BQ24257_REG_1 0x00 |
26 | #define BQ24257_REG_2 0x01 |
27 | #define BQ24257_REG_3 0x02 |
28 | #define BQ24257_REG_4 0x03 |
29 | #define BQ24257_REG_5 0x04 |
30 | #define BQ24257_REG_6 0x05 |
31 | #define BQ24257_REG_7 0x06 |
32 | |
33 | #define BQ24257_MANUFACTURER "Texas Instruments" |
34 | #define BQ24257_PG_GPIO "pg" |
35 | |
36 | #define BQ24257_ILIM_SET_DELAY 1000 /* msec */ |
37 | |
38 | enum bq2425x_chip { |
39 | BQ24250, |
40 | BQ24251, |
41 | BQ24257, |
42 | }; |
43 | |
44 | struct bq2425x_chip_info { |
45 | const char *const name; |
46 | enum bq2425x_chip chip; |
47 | }; |
48 | |
49 | enum bq24257_fields { |
50 | F_WD_FAULT, F_WD_EN, F_STAT, F_FAULT, /* REG 1 */ |
51 | F_RESET, F_IILIMIT, F_EN_STAT, F_EN_TERM, F_CE, F_HZ_MODE, /* REG 2 */ |
52 | F_VBAT, F_USB_DET, /* REG 3 */ |
53 | F_ICHG, F_ITERM, /* REG 4 */ |
54 | F_LOOP_STATUS, F_LOW_CHG, F_DPDM_EN, F_CE_STATUS, F_VINDPM, /* REG 5 */ |
55 | F_X2_TMR_EN, F_TMR, F_SYSOFF, F_TS_EN, F_TS_STAT, /* REG 6 */ |
56 | F_VOVP, F_CLR_VDP, F_FORCE_BATDET, F_FORCE_PTM, /* REG 7 */ |
57 | |
58 | F_MAX_FIELDS |
59 | }; |
60 | |
61 | /* initial field values, converted from uV/uA */ |
62 | struct bq24257_init_data { |
63 | u8 ichg; /* charge current */ |
64 | u8 vbat; /* regulation voltage */ |
65 | u8 iterm; /* termination current */ |
66 | u8 iilimit; /* input current limit */ |
67 | u8 vovp; /* over voltage protection voltage */ |
68 | u8 vindpm; /* VDMP input threshold voltage */ |
69 | }; |
70 | |
71 | struct bq24257_state { |
72 | u8 status; |
73 | u8 fault; |
74 | bool power_good; |
75 | }; |
76 | |
77 | struct bq24257_device { |
78 | struct i2c_client *client; |
79 | struct device *dev; |
80 | struct power_supply *charger; |
81 | |
82 | const struct bq2425x_chip_info *info; |
83 | |
84 | struct regmap *rmap; |
85 | struct regmap_field *rmap_fields[F_MAX_FIELDS]; |
86 | |
87 | struct gpio_desc *pg; |
88 | |
89 | struct delayed_work iilimit_setup_work; |
90 | |
91 | struct bq24257_init_data init_data; |
92 | struct bq24257_state state; |
93 | |
94 | struct mutex lock; /* protect state data */ |
95 | |
96 | bool iilimit_autoset_enable; |
97 | }; |
98 | |
99 | static bool bq24257_is_volatile_reg(struct device *dev, unsigned int reg) |
100 | { |
101 | switch (reg) { |
102 | case BQ24257_REG_2: |
103 | case BQ24257_REG_4: |
104 | return false; |
105 | |
106 | default: |
107 | return true; |
108 | } |
109 | } |
110 | |
111 | static const struct regmap_config bq24257_regmap_config = { |
112 | .reg_bits = 8, |
113 | .val_bits = 8, |
114 | |
115 | .max_register = BQ24257_REG_7, |
116 | .cache_type = REGCACHE_RBTREE, |
117 | |
118 | .volatile_reg = bq24257_is_volatile_reg, |
119 | }; |
120 | |
121 | static const struct reg_field bq24257_reg_fields[] = { |
122 | /* REG 1 */ |
123 | [F_WD_FAULT] = REG_FIELD(BQ24257_REG_1, 7, 7), |
124 | [F_WD_EN] = REG_FIELD(BQ24257_REG_1, 6, 6), |
125 | [F_STAT] = REG_FIELD(BQ24257_REG_1, 4, 5), |
126 | [F_FAULT] = REG_FIELD(BQ24257_REG_1, 0, 3), |
127 | /* REG 2 */ |
128 | [F_RESET] = REG_FIELD(BQ24257_REG_2, 7, 7), |
129 | [F_IILIMIT] = REG_FIELD(BQ24257_REG_2, 4, 6), |
130 | [F_EN_STAT] = REG_FIELD(BQ24257_REG_2, 3, 3), |
131 | [F_EN_TERM] = REG_FIELD(BQ24257_REG_2, 2, 2), |
132 | [F_CE] = REG_FIELD(BQ24257_REG_2, 1, 1), |
133 | [F_HZ_MODE] = REG_FIELD(BQ24257_REG_2, 0, 0), |
134 | /* REG 3 */ |
135 | [F_VBAT] = REG_FIELD(BQ24257_REG_3, 2, 7), |
136 | [F_USB_DET] = REG_FIELD(BQ24257_REG_3, 0, 1), |
137 | /* REG 4 */ |
138 | [F_ICHG] = REG_FIELD(BQ24257_REG_4, 3, 7), |
139 | [F_ITERM] = REG_FIELD(BQ24257_REG_4, 0, 2), |
140 | /* REG 5 */ |
141 | [F_LOOP_STATUS] = REG_FIELD(BQ24257_REG_5, 6, 7), |
142 | [F_LOW_CHG] = REG_FIELD(BQ24257_REG_5, 5, 5), |
143 | [F_DPDM_EN] = REG_FIELD(BQ24257_REG_5, 4, 4), |
144 | [F_CE_STATUS] = REG_FIELD(BQ24257_REG_5, 3, 3), |
145 | [F_VINDPM] = REG_FIELD(BQ24257_REG_5, 0, 2), |
146 | /* REG 6 */ |
147 | [F_X2_TMR_EN] = REG_FIELD(BQ24257_REG_6, 7, 7), |
148 | [F_TMR] = REG_FIELD(BQ24257_REG_6, 5, 6), |
149 | [F_SYSOFF] = REG_FIELD(BQ24257_REG_6, 4, 4), |
150 | [F_TS_EN] = REG_FIELD(BQ24257_REG_6, 3, 3), |
151 | [F_TS_STAT] = REG_FIELD(BQ24257_REG_6, 0, 2), |
152 | /* REG 7 */ |
153 | [F_VOVP] = REG_FIELD(BQ24257_REG_7, 5, 7), |
154 | [F_CLR_VDP] = REG_FIELD(BQ24257_REG_7, 4, 4), |
155 | [F_FORCE_BATDET] = REG_FIELD(BQ24257_REG_7, 3, 3), |
156 | [F_FORCE_PTM] = REG_FIELD(BQ24257_REG_7, 2, 2) |
157 | }; |
158 | |
159 | static const u32 bq24257_vbat_map[] = { |
160 | 3500000, 3520000, 3540000, 3560000, 3580000, 3600000, 3620000, 3640000, |
161 | 3660000, 3680000, 3700000, 3720000, 3740000, 3760000, 3780000, 3800000, |
162 | 3820000, 3840000, 3860000, 3880000, 3900000, 3920000, 3940000, 3960000, |
163 | 3980000, 4000000, 4020000, 4040000, 4060000, 4080000, 4100000, 4120000, |
164 | 4140000, 4160000, 4180000, 4200000, 4220000, 4240000, 4260000, 4280000, |
165 | 4300000, 4320000, 4340000, 4360000, 4380000, 4400000, 4420000, 4440000 |
166 | }; |
167 | |
168 | #define BQ24257_VBAT_MAP_SIZE ARRAY_SIZE(bq24257_vbat_map) |
169 | |
170 | static const u32 bq24257_ichg_map[] = { |
171 | 500000, 550000, 600000, 650000, 700000, 750000, 800000, 850000, 900000, |
172 | 950000, 1000000, 1050000, 1100000, 1150000, 1200000, 1250000, 1300000, |
173 | 1350000, 1400000, 1450000, 1500000, 1550000, 1600000, 1650000, 1700000, |
174 | 1750000, 1800000, 1850000, 1900000, 1950000, 2000000 |
175 | }; |
176 | |
177 | #define BQ24257_ICHG_MAP_SIZE ARRAY_SIZE(bq24257_ichg_map) |
178 | |
179 | static const u32 bq24257_iterm_map[] = { |
180 | 50000, 75000, 100000, 125000, 150000, 175000, 200000, 225000 |
181 | }; |
182 | |
183 | #define BQ24257_ITERM_MAP_SIZE ARRAY_SIZE(bq24257_iterm_map) |
184 | |
185 | static const u32 bq24257_iilimit_map[] = { |
186 | 100000, 150000, 500000, 900000, 1500000, 2000000 |
187 | }; |
188 | |
189 | #define BQ24257_IILIMIT_MAP_SIZE ARRAY_SIZE(bq24257_iilimit_map) |
190 | |
191 | static const u32 bq24257_vovp_map[] = { |
192 | 6000000, 6500000, 7000000, 8000000, 9000000, 9500000, 10000000, |
193 | 10500000 |
194 | }; |
195 | |
196 | #define BQ24257_VOVP_MAP_SIZE ARRAY_SIZE(bq24257_vovp_map) |
197 | |
198 | static const u32 bq24257_vindpm_map[] = { |
199 | 4200000, 4280000, 4360000, 4440000, 4520000, 4600000, 4680000, |
200 | 4760000 |
201 | }; |
202 | |
203 | #define BQ24257_VINDPM_MAP_SIZE ARRAY_SIZE(bq24257_vindpm_map) |
204 | |
205 | static int bq24257_field_read(struct bq24257_device *bq, |
206 | enum bq24257_fields field_id) |
207 | { |
208 | int ret; |
209 | int val; |
210 | |
211 | ret = regmap_field_read(field: bq->rmap_fields[field_id], val: &val); |
212 | if (ret < 0) |
213 | return ret; |
214 | |
215 | return val; |
216 | } |
217 | |
218 | static int bq24257_field_write(struct bq24257_device *bq, |
219 | enum bq24257_fields field_id, u8 val) |
220 | { |
221 | return regmap_field_write(field: bq->rmap_fields[field_id], val); |
222 | } |
223 | |
224 | static u8 bq24257_find_idx(u32 value, const u32 *map, u8 map_size) |
225 | { |
226 | u8 idx; |
227 | |
228 | for (idx = 1; idx < map_size; idx++) |
229 | if (value < map[idx]) |
230 | break; |
231 | |
232 | return idx - 1; |
233 | } |
234 | |
235 | enum bq24257_status { |
236 | STATUS_READY, |
237 | STATUS_CHARGE_IN_PROGRESS, |
238 | STATUS_CHARGE_DONE, |
239 | STATUS_FAULT, |
240 | }; |
241 | |
242 | enum bq24257_fault { |
243 | FAULT_NORMAL, |
244 | FAULT_INPUT_OVP, |
245 | FAULT_INPUT_UVLO, |
246 | FAULT_SLEEP, |
247 | FAULT_BAT_TS, |
248 | FAULT_BAT_OVP, |
249 | FAULT_TS, |
250 | FAULT_TIMER, |
251 | FAULT_NO_BAT, |
252 | FAULT_ISET, |
253 | FAULT_INPUT_LDO_LOW, |
254 | }; |
255 | |
256 | static int bq24257_get_input_current_limit(struct bq24257_device *bq, |
257 | union power_supply_propval *val) |
258 | { |
259 | int ret; |
260 | |
261 | ret = bq24257_field_read(bq, field_id: F_IILIMIT); |
262 | if (ret < 0) |
263 | return ret; |
264 | |
265 | /* |
266 | * The "External ILIM" and "Production & Test" modes are not exposed |
267 | * through this driver and not being covered by the lookup table. |
268 | * Should such a mode have become active let's return an error rather |
269 | * than exceeding the bounds of the lookup table and returning |
270 | * garbage. |
271 | */ |
272 | if (ret >= BQ24257_IILIMIT_MAP_SIZE) |
273 | return -ENODATA; |
274 | |
275 | val->intval = bq24257_iilimit_map[ret]; |
276 | |
277 | return 0; |
278 | } |
279 | |
280 | static int bq24257_set_input_current_limit(struct bq24257_device *bq, |
281 | const union power_supply_propval *val) |
282 | { |
283 | /* |
284 | * Address the case where the user manually sets an input current limit |
285 | * while the charger auto-detection mechanism is active. In this |
286 | * case we want to abort and go straight to the user-specified value. |
287 | */ |
288 | if (bq->iilimit_autoset_enable) |
289 | cancel_delayed_work_sync(dwork: &bq->iilimit_setup_work); |
290 | |
291 | return bq24257_field_write(bq, field_id: F_IILIMIT, |
292 | val: bq24257_find_idx(value: val->intval, |
293 | map: bq24257_iilimit_map, |
294 | BQ24257_IILIMIT_MAP_SIZE)); |
295 | } |
296 | |
297 | static int bq24257_power_supply_get_property(struct power_supply *psy, |
298 | enum power_supply_property psp, |
299 | union power_supply_propval *val) |
300 | { |
301 | struct bq24257_device *bq = power_supply_get_drvdata(psy); |
302 | struct bq24257_state state; |
303 | |
304 | mutex_lock(&bq->lock); |
305 | state = bq->state; |
306 | mutex_unlock(lock: &bq->lock); |
307 | |
308 | switch (psp) { |
309 | case POWER_SUPPLY_PROP_STATUS: |
310 | if (!state.power_good) |
311 | val->intval = POWER_SUPPLY_STATUS_DISCHARGING; |
312 | else if (state.status == STATUS_READY) |
313 | val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; |
314 | else if (state.status == STATUS_CHARGE_IN_PROGRESS) |
315 | val->intval = POWER_SUPPLY_STATUS_CHARGING; |
316 | else if (state.status == STATUS_CHARGE_DONE) |
317 | val->intval = POWER_SUPPLY_STATUS_FULL; |
318 | else |
319 | val->intval = POWER_SUPPLY_STATUS_UNKNOWN; |
320 | break; |
321 | |
322 | case POWER_SUPPLY_PROP_MANUFACTURER: |
323 | val->strval = BQ24257_MANUFACTURER; |
324 | break; |
325 | |
326 | case POWER_SUPPLY_PROP_MODEL_NAME: |
327 | val->strval = bq->info->name; |
328 | break; |
329 | |
330 | case POWER_SUPPLY_PROP_ONLINE: |
331 | val->intval = state.power_good; |
332 | break; |
333 | |
334 | case POWER_SUPPLY_PROP_HEALTH: |
335 | switch (state.fault) { |
336 | case FAULT_NORMAL: |
337 | val->intval = POWER_SUPPLY_HEALTH_GOOD; |
338 | break; |
339 | |
340 | case FAULT_INPUT_OVP: |
341 | case FAULT_BAT_OVP: |
342 | val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE; |
343 | break; |
344 | |
345 | case FAULT_TS: |
346 | case FAULT_BAT_TS: |
347 | val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; |
348 | break; |
349 | |
350 | case FAULT_TIMER: |
351 | val->intval = POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE; |
352 | break; |
353 | |
354 | default: |
355 | val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; |
356 | break; |
357 | } |
358 | |
359 | break; |
360 | |
361 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: |
362 | val->intval = bq24257_ichg_map[bq->init_data.ichg]; |
363 | break; |
364 | |
365 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: |
366 | val->intval = bq24257_ichg_map[BQ24257_ICHG_MAP_SIZE - 1]; |
367 | break; |
368 | |
369 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: |
370 | val->intval = bq24257_vbat_map[bq->init_data.vbat]; |
371 | break; |
372 | |
373 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: |
374 | val->intval = bq24257_vbat_map[BQ24257_VBAT_MAP_SIZE - 1]; |
375 | break; |
376 | |
377 | case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: |
378 | val->intval = bq24257_iterm_map[bq->init_data.iterm]; |
379 | break; |
380 | |
381 | case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: |
382 | return bq24257_get_input_current_limit(bq, val); |
383 | |
384 | default: |
385 | return -EINVAL; |
386 | } |
387 | |
388 | return 0; |
389 | } |
390 | |
391 | static int bq24257_power_supply_set_property(struct power_supply *psy, |
392 | enum power_supply_property prop, |
393 | const union power_supply_propval *val) |
394 | { |
395 | struct bq24257_device *bq = power_supply_get_drvdata(psy); |
396 | |
397 | switch (prop) { |
398 | case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: |
399 | return bq24257_set_input_current_limit(bq, val); |
400 | default: |
401 | return -EINVAL; |
402 | } |
403 | } |
404 | |
405 | static int bq24257_power_supply_property_is_writeable(struct power_supply *psy, |
406 | enum power_supply_property psp) |
407 | { |
408 | switch (psp) { |
409 | case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: |
410 | return true; |
411 | default: |
412 | return false; |
413 | } |
414 | } |
415 | |
416 | static int bq24257_get_chip_state(struct bq24257_device *bq, |
417 | struct bq24257_state *state) |
418 | { |
419 | int ret; |
420 | |
421 | ret = bq24257_field_read(bq, field_id: F_STAT); |
422 | if (ret < 0) |
423 | return ret; |
424 | |
425 | state->status = ret; |
426 | |
427 | ret = bq24257_field_read(bq, field_id: F_FAULT); |
428 | if (ret < 0) |
429 | return ret; |
430 | |
431 | state->fault = ret; |
432 | |
433 | if (bq->pg) |
434 | state->power_good = !gpiod_get_value_cansleep(desc: bq->pg); |
435 | else |
436 | /* |
437 | * If we have a chip without a dedicated power-good GPIO or |
438 | * some other explicit bit that would provide this information |
439 | * assume the power is good if there is no supply related |
440 | * fault - and not good otherwise. There is a possibility for |
441 | * other errors to mask that power in fact is not good but this |
442 | * is probably the best we can do here. |
443 | */ |
444 | switch (state->fault) { |
445 | case FAULT_INPUT_OVP: |
446 | case FAULT_INPUT_UVLO: |
447 | case FAULT_INPUT_LDO_LOW: |
448 | state->power_good = false; |
449 | break; |
450 | default: |
451 | state->power_good = true; |
452 | } |
453 | |
454 | return 0; |
455 | } |
456 | |
457 | static bool bq24257_state_changed(struct bq24257_device *bq, |
458 | struct bq24257_state *new_state) |
459 | { |
460 | int ret; |
461 | |
462 | mutex_lock(&bq->lock); |
463 | ret = (bq->state.status != new_state->status || |
464 | bq->state.fault != new_state->fault || |
465 | bq->state.power_good != new_state->power_good); |
466 | mutex_unlock(lock: &bq->lock); |
467 | |
468 | return ret; |
469 | } |
470 | |
471 | enum bq24257_loop_status { |
472 | LOOP_STATUS_NONE, |
473 | LOOP_STATUS_IN_DPM, |
474 | LOOP_STATUS_IN_CURRENT_LIMIT, |
475 | LOOP_STATUS_THERMAL, |
476 | }; |
477 | |
478 | enum bq24257_in_ilimit { |
479 | IILIMIT_100, |
480 | IILIMIT_150, |
481 | IILIMIT_500, |
482 | IILIMIT_900, |
483 | IILIMIT_1500, |
484 | IILIMIT_2000, |
485 | IILIMIT_EXT, |
486 | IILIMIT_NONE, |
487 | }; |
488 | |
489 | enum bq24257_vovp { |
490 | VOVP_6000, |
491 | VOVP_6500, |
492 | VOVP_7000, |
493 | VOVP_8000, |
494 | VOVP_9000, |
495 | VOVP_9500, |
496 | VOVP_10000, |
497 | VOVP_10500 |
498 | }; |
499 | |
500 | enum bq24257_vindpm { |
501 | VINDPM_4200, |
502 | VINDPM_4280, |
503 | VINDPM_4360, |
504 | VINDPM_4440, |
505 | VINDPM_4520, |
506 | VINDPM_4600, |
507 | VINDPM_4680, |
508 | VINDPM_4760 |
509 | }; |
510 | |
511 | enum bq24257_port_type { |
512 | PORT_TYPE_DCP, /* Dedicated Charging Port */ |
513 | PORT_TYPE_CDP, /* Charging Downstream Port */ |
514 | PORT_TYPE_SDP, /* Standard Downstream Port */ |
515 | PORT_TYPE_NON_STANDARD, |
516 | }; |
517 | |
518 | enum bq24257_safety_timer { |
519 | SAFETY_TIMER_45, |
520 | SAFETY_TIMER_360, |
521 | SAFETY_TIMER_540, |
522 | SAFETY_TIMER_NONE, |
523 | }; |
524 | |
525 | static int bq24257_iilimit_autoset(struct bq24257_device *bq) |
526 | { |
527 | int loop_status; |
528 | int iilimit; |
529 | int port_type; |
530 | int ret; |
531 | const u8 new_iilimit[] = { |
532 | [PORT_TYPE_DCP] = IILIMIT_2000, |
533 | [PORT_TYPE_CDP] = IILIMIT_2000, |
534 | [PORT_TYPE_SDP] = IILIMIT_500, |
535 | [PORT_TYPE_NON_STANDARD] = IILIMIT_500 |
536 | }; |
537 | |
538 | ret = bq24257_field_read(bq, field_id: F_LOOP_STATUS); |
539 | if (ret < 0) |
540 | goto error; |
541 | |
542 | loop_status = ret; |
543 | |
544 | ret = bq24257_field_read(bq, field_id: F_IILIMIT); |
545 | if (ret < 0) |
546 | goto error; |
547 | |
548 | iilimit = ret; |
549 | |
550 | /* |
551 | * All USB ports should be able to handle 500mA. If not, DPM will lower |
552 | * the charging current to accommodate the power source. No need to set |
553 | * a lower IILIMIT value. |
554 | */ |
555 | if (loop_status == LOOP_STATUS_IN_DPM && iilimit == IILIMIT_500) |
556 | return 0; |
557 | |
558 | ret = bq24257_field_read(bq, field_id: F_USB_DET); |
559 | if (ret < 0) |
560 | goto error; |
561 | |
562 | port_type = ret; |
563 | |
564 | ret = bq24257_field_write(bq, field_id: F_IILIMIT, val: new_iilimit[port_type]); |
565 | if (ret < 0) |
566 | goto error; |
567 | |
568 | ret = bq24257_field_write(bq, field_id: F_TMR, val: SAFETY_TIMER_360); |
569 | if (ret < 0) |
570 | goto error; |
571 | |
572 | ret = bq24257_field_write(bq, field_id: F_CLR_VDP, val: 1); |
573 | if (ret < 0) |
574 | goto error; |
575 | |
576 | dev_dbg(bq->dev, "port/loop = %d/%d -> iilimit = %d\n" , |
577 | port_type, loop_status, new_iilimit[port_type]); |
578 | |
579 | return 0; |
580 | |
581 | error: |
582 | dev_err(bq->dev, "%s: Error communicating with the chip.\n" , __func__); |
583 | return ret; |
584 | } |
585 | |
586 | static void bq24257_iilimit_setup_work(struct work_struct *work) |
587 | { |
588 | struct bq24257_device *bq = container_of(work, struct bq24257_device, |
589 | iilimit_setup_work.work); |
590 | |
591 | bq24257_iilimit_autoset(bq); |
592 | } |
593 | |
594 | static void bq24257_handle_state_change(struct bq24257_device *bq, |
595 | struct bq24257_state *new_state) |
596 | { |
597 | int ret; |
598 | struct bq24257_state old_state; |
599 | |
600 | mutex_lock(&bq->lock); |
601 | old_state = bq->state; |
602 | mutex_unlock(lock: &bq->lock); |
603 | |
604 | /* |
605 | * Handle BQ2425x state changes observing whether the D+/D- based input |
606 | * current limit autoset functionality is enabled. |
607 | */ |
608 | if (!new_state->power_good) { |
609 | dev_dbg(bq->dev, "Power removed\n" ); |
610 | if (bq->iilimit_autoset_enable) { |
611 | cancel_delayed_work_sync(dwork: &bq->iilimit_setup_work); |
612 | |
613 | /* activate D+/D- port detection algorithm */ |
614 | ret = bq24257_field_write(bq, field_id: F_DPDM_EN, val: 1); |
615 | if (ret < 0) |
616 | goto error; |
617 | } |
618 | /* |
619 | * When power is removed always return to the default input |
620 | * current limit as configured during probe. |
621 | */ |
622 | ret = bq24257_field_write(bq, field_id: F_IILIMIT, val: bq->init_data.iilimit); |
623 | if (ret < 0) |
624 | goto error; |
625 | } else if (!old_state.power_good) { |
626 | dev_dbg(bq->dev, "Power inserted\n" ); |
627 | |
628 | if (bq->iilimit_autoset_enable) |
629 | /* configure input current limit */ |
630 | schedule_delayed_work(dwork: &bq->iilimit_setup_work, |
631 | delay: msecs_to_jiffies(BQ24257_ILIM_SET_DELAY)); |
632 | } else if (new_state->fault == FAULT_NO_BAT) { |
633 | dev_warn(bq->dev, "Battery removed\n" ); |
634 | } else if (new_state->fault == FAULT_TIMER) { |
635 | dev_err(bq->dev, "Safety timer expired! Battery dead?\n" ); |
636 | } |
637 | |
638 | return; |
639 | |
640 | error: |
641 | dev_err(bq->dev, "%s: Error communicating with the chip.\n" , __func__); |
642 | } |
643 | |
644 | static irqreturn_t bq24257_irq_handler_thread(int irq, void *private) |
645 | { |
646 | int ret; |
647 | struct bq24257_device *bq = private; |
648 | struct bq24257_state state; |
649 | |
650 | ret = bq24257_get_chip_state(bq, state: &state); |
651 | if (ret < 0) |
652 | return IRQ_HANDLED; |
653 | |
654 | if (!bq24257_state_changed(bq, new_state: &state)) |
655 | return IRQ_HANDLED; |
656 | |
657 | dev_dbg(bq->dev, "irq(state changed): status/fault/pg = %d/%d/%d\n" , |
658 | state.status, state.fault, state.power_good); |
659 | |
660 | bq24257_handle_state_change(bq, new_state: &state); |
661 | |
662 | mutex_lock(&bq->lock); |
663 | bq->state = state; |
664 | mutex_unlock(lock: &bq->lock); |
665 | |
666 | power_supply_changed(psy: bq->charger); |
667 | |
668 | return IRQ_HANDLED; |
669 | } |
670 | |
671 | static int bq24257_hw_init(struct bq24257_device *bq) |
672 | { |
673 | int ret; |
674 | int i; |
675 | struct bq24257_state state; |
676 | |
677 | const struct { |
678 | int field; |
679 | u32 value; |
680 | } init_data[] = { |
681 | {F_ICHG, bq->init_data.ichg}, |
682 | {F_VBAT, bq->init_data.vbat}, |
683 | {F_ITERM, bq->init_data.iterm}, |
684 | {F_VOVP, bq->init_data.vovp}, |
685 | {F_VINDPM, bq->init_data.vindpm}, |
686 | }; |
687 | |
688 | /* |
689 | * Disable the watchdog timer to prevent the IC from going back to |
690 | * default settings after 50 seconds of I2C inactivity. |
691 | */ |
692 | ret = bq24257_field_write(bq, field_id: F_WD_EN, val: 0); |
693 | if (ret < 0) |
694 | return ret; |
695 | |
696 | /* configure the charge currents and voltages */ |
697 | for (i = 0; i < ARRAY_SIZE(init_data); i++) { |
698 | ret = bq24257_field_write(bq, field_id: init_data[i].field, |
699 | val: init_data[i].value); |
700 | if (ret < 0) |
701 | return ret; |
702 | } |
703 | |
704 | ret = bq24257_get_chip_state(bq, state: &state); |
705 | if (ret < 0) |
706 | return ret; |
707 | |
708 | mutex_lock(&bq->lock); |
709 | bq->state = state; |
710 | mutex_unlock(lock: &bq->lock); |
711 | |
712 | if (!bq->iilimit_autoset_enable) { |
713 | dev_dbg(bq->dev, "manually setting iilimit = %u\n" , |
714 | bq->init_data.iilimit); |
715 | |
716 | /* program fixed input current limit */ |
717 | ret = bq24257_field_write(bq, field_id: F_IILIMIT, |
718 | val: bq->init_data.iilimit); |
719 | if (ret < 0) |
720 | return ret; |
721 | } else if (!state.power_good) |
722 | /* activate D+/D- detection algorithm */ |
723 | ret = bq24257_field_write(bq, field_id: F_DPDM_EN, val: 1); |
724 | else if (state.fault != FAULT_NO_BAT) |
725 | ret = bq24257_iilimit_autoset(bq); |
726 | |
727 | return ret; |
728 | } |
729 | |
730 | static enum power_supply_property bq24257_power_supply_props[] = { |
731 | POWER_SUPPLY_PROP_MANUFACTURER, |
732 | POWER_SUPPLY_PROP_MODEL_NAME, |
733 | POWER_SUPPLY_PROP_STATUS, |
734 | POWER_SUPPLY_PROP_ONLINE, |
735 | POWER_SUPPLY_PROP_HEALTH, |
736 | POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT, |
737 | POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX, |
738 | POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, |
739 | POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX, |
740 | POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT, |
741 | POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, |
742 | }; |
743 | |
744 | static char *bq24257_charger_supplied_to[] = { |
745 | "main-battery" , |
746 | }; |
747 | |
748 | static const struct power_supply_desc bq24257_power_supply_desc = { |
749 | .name = "bq24257-charger" , |
750 | .type = POWER_SUPPLY_TYPE_USB, |
751 | .properties = bq24257_power_supply_props, |
752 | .num_properties = ARRAY_SIZE(bq24257_power_supply_props), |
753 | .get_property = bq24257_power_supply_get_property, |
754 | .set_property = bq24257_power_supply_set_property, |
755 | .property_is_writeable = bq24257_power_supply_property_is_writeable, |
756 | }; |
757 | |
758 | static ssize_t bq24257_show_ovp_voltage(struct device *dev, |
759 | struct device_attribute *attr, |
760 | char *buf) |
761 | { |
762 | struct power_supply *psy = dev_get_drvdata(dev); |
763 | struct bq24257_device *bq = power_supply_get_drvdata(psy); |
764 | |
765 | return sysfs_emit(buf, fmt: "%u\n" , bq24257_vovp_map[bq->init_data.vovp]); |
766 | } |
767 | |
768 | static ssize_t bq24257_show_in_dpm_voltage(struct device *dev, |
769 | struct device_attribute *attr, |
770 | char *buf) |
771 | { |
772 | struct power_supply *psy = dev_get_drvdata(dev); |
773 | struct bq24257_device *bq = power_supply_get_drvdata(psy); |
774 | |
775 | return sysfs_emit(buf, fmt: "%u\n" , bq24257_vindpm_map[bq->init_data.vindpm]); |
776 | } |
777 | |
778 | static ssize_t bq24257_sysfs_show_enable(struct device *dev, |
779 | struct device_attribute *attr, |
780 | char *buf) |
781 | { |
782 | struct power_supply *psy = dev_get_drvdata(dev); |
783 | struct bq24257_device *bq = power_supply_get_drvdata(psy); |
784 | int ret; |
785 | |
786 | if (strcmp(attr->attr.name, "high_impedance_enable" ) == 0) |
787 | ret = bq24257_field_read(bq, field_id: F_HZ_MODE); |
788 | else if (strcmp(attr->attr.name, "sysoff_enable" ) == 0) |
789 | ret = bq24257_field_read(bq, field_id: F_SYSOFF); |
790 | else |
791 | return -EINVAL; |
792 | |
793 | if (ret < 0) |
794 | return ret; |
795 | |
796 | return sysfs_emit(buf, fmt: "%d\n" , ret); |
797 | } |
798 | |
799 | static ssize_t bq24257_sysfs_set_enable(struct device *dev, |
800 | struct device_attribute *attr, |
801 | const char *buf, |
802 | size_t count) |
803 | { |
804 | struct power_supply *psy = dev_get_drvdata(dev); |
805 | struct bq24257_device *bq = power_supply_get_drvdata(psy); |
806 | long val; |
807 | int ret; |
808 | |
809 | if (kstrtol(s: buf, base: 10, res: &val) < 0) |
810 | return -EINVAL; |
811 | |
812 | if (strcmp(attr->attr.name, "high_impedance_enable" ) == 0) |
813 | ret = bq24257_field_write(bq, field_id: F_HZ_MODE, val: (bool)val); |
814 | else if (strcmp(attr->attr.name, "sysoff_enable" ) == 0) |
815 | ret = bq24257_field_write(bq, field_id: F_SYSOFF, val: (bool)val); |
816 | else |
817 | return -EINVAL; |
818 | |
819 | if (ret < 0) |
820 | return ret; |
821 | |
822 | return count; |
823 | } |
824 | |
825 | static DEVICE_ATTR(ovp_voltage, S_IRUGO, bq24257_show_ovp_voltage, NULL); |
826 | static DEVICE_ATTR(in_dpm_voltage, S_IRUGO, bq24257_show_in_dpm_voltage, NULL); |
827 | static DEVICE_ATTR(high_impedance_enable, S_IWUSR | S_IRUGO, |
828 | bq24257_sysfs_show_enable, bq24257_sysfs_set_enable); |
829 | static DEVICE_ATTR(sysoff_enable, S_IWUSR | S_IRUGO, |
830 | bq24257_sysfs_show_enable, bq24257_sysfs_set_enable); |
831 | |
832 | static struct attribute *bq24257_charger_sysfs_attrs[] = { |
833 | &dev_attr_ovp_voltage.attr, |
834 | &dev_attr_in_dpm_voltage.attr, |
835 | &dev_attr_high_impedance_enable.attr, |
836 | &dev_attr_sysoff_enable.attr, |
837 | NULL, |
838 | }; |
839 | |
840 | ATTRIBUTE_GROUPS(bq24257_charger_sysfs); |
841 | |
842 | static int bq24257_power_supply_init(struct bq24257_device *bq) |
843 | { |
844 | struct power_supply_config psy_cfg = { .drv_data = bq, }; |
845 | |
846 | psy_cfg.attr_grp = bq24257_charger_sysfs_groups; |
847 | psy_cfg.supplied_to = bq24257_charger_supplied_to; |
848 | psy_cfg.num_supplicants = ARRAY_SIZE(bq24257_charger_supplied_to); |
849 | |
850 | bq->charger = devm_power_supply_register(parent: bq->dev, |
851 | desc: &bq24257_power_supply_desc, |
852 | cfg: &psy_cfg); |
853 | |
854 | return PTR_ERR_OR_ZERO(ptr: bq->charger); |
855 | } |
856 | |
857 | static void bq24257_pg_gpio_probe(struct bq24257_device *bq) |
858 | { |
859 | bq->pg = devm_gpiod_get_optional(dev: bq->dev, BQ24257_PG_GPIO, flags: GPIOD_IN); |
860 | |
861 | if (PTR_ERR(ptr: bq->pg) == -EPROBE_DEFER) { |
862 | dev_info(bq->dev, "probe retry requested for PG pin\n" ); |
863 | return; |
864 | } else if (IS_ERR(ptr: bq->pg)) { |
865 | dev_err(bq->dev, "error probing PG pin\n" ); |
866 | bq->pg = NULL; |
867 | return; |
868 | } |
869 | |
870 | if (bq->pg) |
871 | dev_dbg(bq->dev, "probed PG pin = %d\n" , desc_to_gpio(bq->pg)); |
872 | } |
873 | |
874 | static int bq24257_fw_probe(struct bq24257_device *bq) |
875 | { |
876 | int ret; |
877 | u32 property; |
878 | |
879 | /* Required properties */ |
880 | ret = device_property_read_u32(dev: bq->dev, propname: "ti,charge-current" , val: &property); |
881 | if (ret < 0) |
882 | return ret; |
883 | |
884 | bq->init_data.ichg = bq24257_find_idx(value: property, map: bq24257_ichg_map, |
885 | BQ24257_ICHG_MAP_SIZE); |
886 | |
887 | ret = device_property_read_u32(dev: bq->dev, propname: "ti,battery-regulation-voltage" , |
888 | val: &property); |
889 | if (ret < 0) |
890 | return ret; |
891 | |
892 | bq->init_data.vbat = bq24257_find_idx(value: property, map: bq24257_vbat_map, |
893 | BQ24257_VBAT_MAP_SIZE); |
894 | |
895 | ret = device_property_read_u32(dev: bq->dev, propname: "ti,termination-current" , |
896 | val: &property); |
897 | if (ret < 0) |
898 | return ret; |
899 | |
900 | bq->init_data.iterm = bq24257_find_idx(value: property, map: bq24257_iterm_map, |
901 | BQ24257_ITERM_MAP_SIZE); |
902 | |
903 | /* Optional properties. If not provided use reasonable default. */ |
904 | ret = device_property_read_u32(dev: bq->dev, propname: "ti,current-limit" , |
905 | val: &property); |
906 | if (ret < 0) { |
907 | bq->iilimit_autoset_enable = true; |
908 | |
909 | /* |
910 | * Explicitly set a default value which will be needed for |
911 | * devices that don't support the automatic setting of the input |
912 | * current limit through the charger type detection mechanism. |
913 | */ |
914 | bq->init_data.iilimit = IILIMIT_500; |
915 | } else |
916 | bq->init_data.iilimit = |
917 | bq24257_find_idx(value: property, |
918 | map: bq24257_iilimit_map, |
919 | BQ24257_IILIMIT_MAP_SIZE); |
920 | |
921 | ret = device_property_read_u32(dev: bq->dev, propname: "ti,ovp-voltage" , |
922 | val: &property); |
923 | if (ret < 0) |
924 | bq->init_data.vovp = VOVP_6500; |
925 | else |
926 | bq->init_data.vovp = bq24257_find_idx(value: property, |
927 | map: bq24257_vovp_map, |
928 | BQ24257_VOVP_MAP_SIZE); |
929 | |
930 | ret = device_property_read_u32(dev: bq->dev, propname: "ti,in-dpm-voltage" , |
931 | val: &property); |
932 | if (ret < 0) |
933 | bq->init_data.vindpm = VINDPM_4360; |
934 | else |
935 | bq->init_data.vindpm = |
936 | bq24257_find_idx(value: property, |
937 | map: bq24257_vindpm_map, |
938 | BQ24257_VINDPM_MAP_SIZE); |
939 | |
940 | return 0; |
941 | } |
942 | |
943 | static int bq24257_probe(struct i2c_client *client) |
944 | { |
945 | struct i2c_adapter *adapter = client->adapter; |
946 | struct device *dev = &client->dev; |
947 | struct bq24257_device *bq; |
948 | int ret; |
949 | int i; |
950 | |
951 | if (!i2c_check_functionality(adap: adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { |
952 | dev_err(dev, "No support for SMBUS_BYTE_DATA\n" ); |
953 | return -ENODEV; |
954 | } |
955 | |
956 | bq = devm_kzalloc(dev, size: sizeof(*bq), GFP_KERNEL); |
957 | if (!bq) |
958 | return -ENOMEM; |
959 | |
960 | bq->client = client; |
961 | bq->dev = dev; |
962 | |
963 | bq->info = i2c_get_match_data(client); |
964 | if (!bq->info) |
965 | return dev_err_probe(dev, err: -ENODEV, fmt: "Failed to match device\n" ); |
966 | |
967 | mutex_init(&bq->lock); |
968 | |
969 | bq->rmap = devm_regmap_init_i2c(client, &bq24257_regmap_config); |
970 | if (IS_ERR(ptr: bq->rmap)) { |
971 | dev_err(dev, "failed to allocate register map\n" ); |
972 | return PTR_ERR(ptr: bq->rmap); |
973 | } |
974 | |
975 | for (i = 0; i < ARRAY_SIZE(bq24257_reg_fields); i++) { |
976 | const struct reg_field *reg_fields = bq24257_reg_fields; |
977 | |
978 | bq->rmap_fields[i] = devm_regmap_field_alloc(dev, regmap: bq->rmap, |
979 | reg_field: reg_fields[i]); |
980 | if (IS_ERR(ptr: bq->rmap_fields[i])) { |
981 | dev_err(dev, "cannot allocate regmap field\n" ); |
982 | return PTR_ERR(ptr: bq->rmap_fields[i]); |
983 | } |
984 | } |
985 | |
986 | i2c_set_clientdata(client, data: bq); |
987 | |
988 | if (!dev->platform_data) { |
989 | ret = bq24257_fw_probe(bq); |
990 | if (ret < 0) { |
991 | dev_err(dev, "Cannot read device properties.\n" ); |
992 | return ret; |
993 | } |
994 | } else { |
995 | return -ENODEV; |
996 | } |
997 | |
998 | /* |
999 | * The BQ24250 doesn't support the D+/D- based charger type detection |
1000 | * used for the automatic setting of the input current limit setting so |
1001 | * explicitly disable that feature. |
1002 | */ |
1003 | if (bq->info->chip == BQ24250) |
1004 | bq->iilimit_autoset_enable = false; |
1005 | |
1006 | if (bq->iilimit_autoset_enable) |
1007 | INIT_DELAYED_WORK(&bq->iilimit_setup_work, |
1008 | bq24257_iilimit_setup_work); |
1009 | |
1010 | /* |
1011 | * The BQ24250 doesn't have a dedicated Power Good (PG) pin so let's |
1012 | * not probe for it and instead use a SW-based approach to determine |
1013 | * the PG state. We also use a SW-based approach for all other devices |
1014 | * if the PG pin is either not defined or can't be probed. |
1015 | */ |
1016 | if (bq->info->chip != BQ24250) |
1017 | bq24257_pg_gpio_probe(bq); |
1018 | |
1019 | if (PTR_ERR(ptr: bq->pg) == -EPROBE_DEFER) |
1020 | return PTR_ERR(ptr: bq->pg); |
1021 | else if (!bq->pg) |
1022 | dev_info(bq->dev, "using SW-based power-good detection\n" ); |
1023 | |
1024 | /* reset all registers to defaults */ |
1025 | ret = bq24257_field_write(bq, field_id: F_RESET, val: 1); |
1026 | if (ret < 0) |
1027 | return ret; |
1028 | |
1029 | /* |
1030 | * Put the RESET bit back to 0, in cache. For some reason the HW always |
1031 | * returns 1 on this bit, so this is the only way to avoid resetting the |
1032 | * chip every time we update another field in this register. |
1033 | */ |
1034 | ret = bq24257_field_write(bq, field_id: F_RESET, val: 0); |
1035 | if (ret < 0) |
1036 | return ret; |
1037 | |
1038 | ret = bq24257_hw_init(bq); |
1039 | if (ret < 0) { |
1040 | dev_err(dev, "Cannot initialize the chip.\n" ); |
1041 | return ret; |
1042 | } |
1043 | |
1044 | ret = bq24257_power_supply_init(bq); |
1045 | if (ret < 0) { |
1046 | dev_err(dev, "Failed to register power supply\n" ); |
1047 | return ret; |
1048 | } |
1049 | |
1050 | ret = devm_request_threaded_irq(dev, irq: client->irq, NULL, |
1051 | thread_fn: bq24257_irq_handler_thread, |
1052 | IRQF_TRIGGER_FALLING | |
1053 | IRQF_TRIGGER_RISING | IRQF_ONESHOT, |
1054 | devname: bq->info->name, dev_id: bq); |
1055 | if (ret) { |
1056 | dev_err(dev, "Failed to request IRQ #%d\n" , client->irq); |
1057 | return ret; |
1058 | } |
1059 | |
1060 | return 0; |
1061 | } |
1062 | |
1063 | static void bq24257_remove(struct i2c_client *client) |
1064 | { |
1065 | struct bq24257_device *bq = i2c_get_clientdata(client); |
1066 | |
1067 | if (bq->iilimit_autoset_enable) |
1068 | cancel_delayed_work_sync(dwork: &bq->iilimit_setup_work); |
1069 | |
1070 | bq24257_field_write(bq, field_id: F_RESET, val: 1); /* reset to defaults */ |
1071 | } |
1072 | |
1073 | #ifdef CONFIG_PM_SLEEP |
1074 | static int bq24257_suspend(struct device *dev) |
1075 | { |
1076 | struct bq24257_device *bq = dev_get_drvdata(dev); |
1077 | int ret = 0; |
1078 | |
1079 | if (bq->iilimit_autoset_enable) |
1080 | cancel_delayed_work_sync(dwork: &bq->iilimit_setup_work); |
1081 | |
1082 | /* reset all registers to default (and activate standalone mode) */ |
1083 | ret = bq24257_field_write(bq, field_id: F_RESET, val: 1); |
1084 | if (ret < 0) |
1085 | dev_err(bq->dev, "Cannot reset chip to standalone mode.\n" ); |
1086 | |
1087 | return ret; |
1088 | } |
1089 | |
1090 | static int bq24257_resume(struct device *dev) |
1091 | { |
1092 | int ret; |
1093 | struct bq24257_device *bq = dev_get_drvdata(dev); |
1094 | |
1095 | ret = regcache_drop_region(map: bq->rmap, BQ24257_REG_1, BQ24257_REG_7); |
1096 | if (ret < 0) |
1097 | return ret; |
1098 | |
1099 | ret = bq24257_field_write(bq, field_id: F_RESET, val: 0); |
1100 | if (ret < 0) |
1101 | return ret; |
1102 | |
1103 | ret = bq24257_hw_init(bq); |
1104 | if (ret < 0) { |
1105 | dev_err(bq->dev, "Cannot init chip after resume.\n" ); |
1106 | return ret; |
1107 | } |
1108 | |
1109 | /* signal userspace, maybe state changed while suspended */ |
1110 | power_supply_changed(psy: bq->charger); |
1111 | |
1112 | return 0; |
1113 | } |
1114 | #endif |
1115 | |
1116 | static const struct dev_pm_ops bq24257_pm = { |
1117 | SET_SYSTEM_SLEEP_PM_OPS(bq24257_suspend, bq24257_resume) |
1118 | }; |
1119 | |
1120 | static const struct bq2425x_chip_info bq24250_info = { |
1121 | .name = "bq24250" , |
1122 | .chip = BQ24250, |
1123 | }; |
1124 | |
1125 | static const struct bq2425x_chip_info bq24251_info = { |
1126 | .name = "bq24251" , |
1127 | .chip = BQ24251, |
1128 | }; |
1129 | |
1130 | static const struct bq2425x_chip_info bq24257_info = { |
1131 | .name = "bq24257" , |
1132 | .chip = BQ24257, |
1133 | }; |
1134 | |
1135 | static const struct i2c_device_id bq24257_i2c_ids[] = { |
1136 | { "bq24250" , (kernel_ulong_t)&bq24250_info }, |
1137 | { "bq24251" , (kernel_ulong_t)&bq24251_info }, |
1138 | { "bq24257" , (kernel_ulong_t)&bq24257_info }, |
1139 | {} |
1140 | }; |
1141 | MODULE_DEVICE_TABLE(i2c, bq24257_i2c_ids); |
1142 | |
1143 | static const struct of_device_id bq24257_of_match[] __maybe_unused = { |
1144 | { .compatible = "ti,bq24250" , &bq24250_info }, |
1145 | { .compatible = "ti,bq24251" , &bq24251_info }, |
1146 | { .compatible = "ti,bq24257" , &bq24257_info }, |
1147 | {} |
1148 | }; |
1149 | MODULE_DEVICE_TABLE(of, bq24257_of_match); |
1150 | |
1151 | #ifdef CONFIG_ACPI |
1152 | static const struct acpi_device_id bq24257_acpi_match[] = { |
1153 | { "BQ242500" , (kernel_ulong_t)&bq24250_info }, |
1154 | { "BQ242510" , (kernel_ulong_t)&bq24251_info }, |
1155 | { "BQ242570" , (kernel_ulong_t)&bq24257_info }, |
1156 | {} |
1157 | }; |
1158 | MODULE_DEVICE_TABLE(acpi, bq24257_acpi_match); |
1159 | #endif |
1160 | |
1161 | static struct i2c_driver bq24257_driver = { |
1162 | .driver = { |
1163 | .name = "bq24257-charger" , |
1164 | .of_match_table = of_match_ptr(bq24257_of_match), |
1165 | .acpi_match_table = ACPI_PTR(bq24257_acpi_match), |
1166 | .pm = &bq24257_pm, |
1167 | }, |
1168 | .probe = bq24257_probe, |
1169 | .remove = bq24257_remove, |
1170 | .id_table = bq24257_i2c_ids, |
1171 | }; |
1172 | module_i2c_driver(bq24257_driver); |
1173 | |
1174 | MODULE_AUTHOR("Laurentiu Palcu <laurentiu.palcu@intel.com>" ); |
1175 | MODULE_DESCRIPTION("bq24257 charger driver" ); |
1176 | MODULE_LICENSE("GPL" ); |
1177 | |