]>
Commit | Line | Data |
---|---|---|
5c0e09e0 WY |
1 | /* |
2 | * Power supply driver for the Active-semi ACT8945A PMIC | |
3 | * | |
4 | * Copyright (C) 2015 Atmel Corporation | |
5 | * | |
6 | * Author: Wenyou Yang <wenyou.yang@atmel.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | * | |
12 | */ | |
a09209ac | 13 | #include <linux/interrupt.h> |
5c0e09e0 WY |
14 | #include <linux/module.h> |
15 | #include <linux/of.h> | |
a09209ac | 16 | #include <linux/of_irq.h> |
5c0e09e0 WY |
17 | #include <linux/platform_device.h> |
18 | #include <linux/power_supply.h> | |
19 | #include <linux/regmap.h> | |
369eba09 | 20 | #include <linux/gpio/consumer.h> |
5c0e09e0 WY |
21 | |
22 | static const char *act8945a_charger_model = "ACT8945A"; | |
23 | static const char *act8945a_charger_manufacturer = "Active-semi"; | |
24 | ||
25 | /** | |
26 | * ACT8945A Charger Register Map | |
27 | */ | |
28 | ||
29 | /* 0x70: Reserved */ | |
30 | #define ACT8945A_APCH_CFG 0x71 | |
31 | #define ACT8945A_APCH_STATUS 0x78 | |
32 | #define ACT8945A_APCH_CTRL 0x79 | |
33 | #define ACT8945A_APCH_STATE 0x7A | |
34 | ||
35 | /* ACT8945A_APCH_CFG */ | |
36 | #define APCH_CFG_OVPSET (0x3 << 0) | |
37 | #define APCH_CFG_OVPSET_6V6 (0x0 << 0) | |
38 | #define APCH_CFG_OVPSET_7V (0x1 << 0) | |
39 | #define APCH_CFG_OVPSET_7V5 (0x2 << 0) | |
40 | #define APCH_CFG_OVPSET_8V (0x3 << 0) | |
41 | #define APCH_CFG_PRETIMO (0x3 << 2) | |
42 | #define APCH_CFG_PRETIMO_40_MIN (0x0 << 2) | |
43 | #define APCH_CFG_PRETIMO_60_MIN (0x1 << 2) | |
44 | #define APCH_CFG_PRETIMO_80_MIN (0x2 << 2) | |
45 | #define APCH_CFG_PRETIMO_DISABLED (0x3 << 2) | |
46 | #define APCH_CFG_TOTTIMO (0x3 << 4) | |
47 | #define APCH_CFG_TOTTIMO_3_HOUR (0x0 << 4) | |
48 | #define APCH_CFG_TOTTIMO_4_HOUR (0x1 << 4) | |
49 | #define APCH_CFG_TOTTIMO_5_HOUR (0x2 << 4) | |
50 | #define APCH_CFG_TOTTIMO_DISABLED (0x3 << 4) | |
51 | #define APCH_CFG_SUSCHG (0x1 << 7) | |
52 | ||
53 | #define APCH_STATUS_CHGDAT BIT(0) | |
54 | #define APCH_STATUS_INDAT BIT(1) | |
55 | #define APCH_STATUS_TEMPDAT BIT(2) | |
56 | #define APCH_STATUS_TIMRDAT BIT(3) | |
57 | #define APCH_STATUS_CHGSTAT BIT(4) | |
58 | #define APCH_STATUS_INSTAT BIT(5) | |
59 | #define APCH_STATUS_TEMPSTAT BIT(6) | |
60 | #define APCH_STATUS_TIMRSTAT BIT(7) | |
61 | ||
62 | #define APCH_CTRL_CHGEOCOUT BIT(0) | |
63 | #define APCH_CTRL_INDIS BIT(1) | |
64 | #define APCH_CTRL_TEMPOUT BIT(2) | |
65 | #define APCH_CTRL_TIMRPRE BIT(3) | |
66 | #define APCH_CTRL_CHGEOCIN BIT(4) | |
67 | #define APCH_CTRL_INCON BIT(5) | |
68 | #define APCH_CTRL_TEMPIN BIT(6) | |
69 | #define APCH_CTRL_TIMRTOT BIT(7) | |
70 | ||
71 | #define APCH_STATE_ACINSTAT (0x1 << 1) | |
72 | #define APCH_STATE_CSTATE (0x3 << 4) | |
73 | #define APCH_STATE_CSTATE_SHIFT 4 | |
74 | #define APCH_STATE_CSTATE_DISABLED 0x00 | |
75 | #define APCH_STATE_CSTATE_EOC 0x01 | |
76 | #define APCH_STATE_CSTATE_FAST 0x02 | |
77 | #define APCH_STATE_CSTATE_PRE 0x03 | |
78 | ||
79 | struct act8945a_charger { | |
a09209ac | 80 | struct power_supply *psy; |
10ca08b0 | 81 | struct power_supply_desc desc; |
5c0e09e0 | 82 | struct regmap *regmap; |
a09209ac WY |
83 | struct work_struct work; |
84 | ||
85 | bool init_done; | |
369eba09 | 86 | struct gpio_desc *lbo_gpio; |
528e3504 | 87 | struct gpio_desc *chglev_gpio; |
5c0e09e0 WY |
88 | }; |
89 | ||
90 | static int act8945a_get_charger_state(struct regmap *regmap, int *val) | |
91 | { | |
92 | int ret; | |
93 | unsigned int status, state; | |
94 | ||
95 | ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status); | |
96 | if (ret < 0) | |
97 | return ret; | |
98 | ||
99 | ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state); | |
100 | if (ret < 0) | |
101 | return ret; | |
102 | ||
103 | state &= APCH_STATE_CSTATE; | |
104 | state >>= APCH_STATE_CSTATE_SHIFT; | |
105 | ||
1f0ba406 WY |
106 | switch (state) { |
107 | case APCH_STATE_CSTATE_PRE: | |
108 | case APCH_STATE_CSTATE_FAST: | |
109 | *val = POWER_SUPPLY_STATUS_CHARGING; | |
110 | break; | |
111 | case APCH_STATE_CSTATE_EOC: | |
5c0e09e0 WY |
112 | if (status & APCH_STATUS_CHGDAT) |
113 | *val = POWER_SUPPLY_STATUS_FULL; | |
1f0ba406 WY |
114 | else |
115 | *val = POWER_SUPPLY_STATUS_CHARGING; | |
116 | break; | |
117 | case APCH_STATE_CSTATE_DISABLED: | |
118 | default: | |
119 | if (!(status & APCH_STATUS_INDAT)) | |
120 | *val = POWER_SUPPLY_STATUS_DISCHARGING; | |
5c0e09e0 WY |
121 | else |
122 | *val = POWER_SUPPLY_STATUS_NOT_CHARGING; | |
1f0ba406 | 123 | break; |
5c0e09e0 WY |
124 | } |
125 | ||
126 | return 0; | |
127 | } | |
128 | ||
129 | static int act8945a_get_charge_type(struct regmap *regmap, int *val) | |
130 | { | |
131 | int ret; | |
1f0ba406 WY |
132 | unsigned int status, state; |
133 | ||
134 | ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status); | |
135 | if (ret < 0) | |
136 | return ret; | |
5c0e09e0 WY |
137 | |
138 | ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state); | |
139 | if (ret < 0) | |
140 | return ret; | |
141 | ||
142 | state &= APCH_STATE_CSTATE; | |
143 | state >>= APCH_STATE_CSTATE_SHIFT; | |
144 | ||
145 | switch (state) { | |
146 | case APCH_STATE_CSTATE_PRE: | |
147 | *val = POWER_SUPPLY_CHARGE_TYPE_TRICKLE; | |
148 | break; | |
149 | case APCH_STATE_CSTATE_FAST: | |
150 | *val = POWER_SUPPLY_CHARGE_TYPE_FAST; | |
151 | break; | |
152 | case APCH_STATE_CSTATE_EOC: | |
1f0ba406 WY |
153 | *val = POWER_SUPPLY_CHARGE_TYPE_NONE; |
154 | break; | |
5c0e09e0 WY |
155 | case APCH_STATE_CSTATE_DISABLED: |
156 | default: | |
1f0ba406 WY |
157 | if (!(status & APCH_STATUS_INDAT)) |
158 | *val = POWER_SUPPLY_CHARGE_TYPE_NONE; | |
159 | else | |
160 | *val = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN; | |
161 | break; | |
5c0e09e0 WY |
162 | } |
163 | ||
164 | return 0; | |
165 | } | |
166 | ||
6b021fc9 | 167 | static int act8945a_get_battery_health(struct regmap *regmap, int *val) |
5c0e09e0 WY |
168 | { |
169 | int ret; | |
1f0ba406 | 170 | unsigned int status, state, config; |
5c0e09e0 WY |
171 | |
172 | ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status); | |
173 | if (ret < 0) | |
174 | return ret; | |
175 | ||
1f0ba406 WY |
176 | ret = regmap_read(regmap, ACT8945A_APCH_CFG, &config); |
177 | if (ret < 0) | |
178 | return ret; | |
179 | ||
180 | ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state); | |
181 | if (ret < 0) | |
182 | return ret; | |
183 | ||
184 | state &= APCH_STATE_CSTATE; | |
185 | state >>= APCH_STATE_CSTATE_SHIFT; | |
186 | ||
187 | switch (state) { | |
188 | case APCH_STATE_CSTATE_DISABLED: | |
189 | if (config & APCH_CFG_SUSCHG) { | |
190 | *val = POWER_SUPPLY_HEALTH_UNKNOWN; | |
191 | } else if (status & APCH_STATUS_INDAT) { | |
192 | if (!(status & APCH_STATUS_TEMPDAT)) | |
193 | *val = POWER_SUPPLY_HEALTH_OVERHEAT; | |
194 | else if (status & APCH_STATUS_TIMRDAT) | |
195 | *val = POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE; | |
196 | else | |
197 | *val = POWER_SUPPLY_HEALTH_OVERVOLTAGE; | |
198 | } else { | |
199 | *val = POWER_SUPPLY_HEALTH_GOOD; | |
200 | } | |
201 | break; | |
202 | case APCH_STATE_CSTATE_PRE: | |
203 | case APCH_STATE_CSTATE_FAST: | |
204 | case APCH_STATE_CSTATE_EOC: | |
205 | default: | |
5c0e09e0 | 206 | *val = POWER_SUPPLY_HEALTH_GOOD; |
1f0ba406 WY |
207 | break; |
208 | } | |
5c0e09e0 WY |
209 | |
210 | return 0; | |
211 | } | |
212 | ||
369eba09 WY |
213 | static int act8945a_get_capacity_level(struct act8945a_charger *charger, |
214 | struct regmap *regmap, int *val) | |
215 | { | |
216 | int ret; | |
217 | unsigned int status, state, config; | |
218 | int lbo_level = gpiod_get_value(charger->lbo_gpio); | |
219 | ||
220 | ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status); | |
221 | if (ret < 0) | |
222 | return ret; | |
223 | ||
224 | ret = regmap_read(regmap, ACT8945A_APCH_CFG, &config); | |
225 | if (ret < 0) | |
226 | return ret; | |
227 | ||
228 | ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state); | |
229 | if (ret < 0) | |
230 | return ret; | |
231 | ||
232 | state &= APCH_STATE_CSTATE; | |
233 | state >>= APCH_STATE_CSTATE_SHIFT; | |
234 | ||
235 | switch (state) { | |
236 | case APCH_STATE_CSTATE_PRE: | |
237 | *val = POWER_SUPPLY_CAPACITY_LEVEL_LOW; | |
238 | break; | |
239 | case APCH_STATE_CSTATE_FAST: | |
240 | if (lbo_level) | |
241 | *val = POWER_SUPPLY_CAPACITY_LEVEL_HIGH; | |
242 | else | |
243 | *val = POWER_SUPPLY_CAPACITY_LEVEL_LOW; | |
244 | break; | |
245 | case APCH_STATE_CSTATE_EOC: | |
246 | if (status & APCH_STATUS_CHGDAT) | |
247 | *val = POWER_SUPPLY_CAPACITY_LEVEL_FULL; | |
248 | else | |
249 | *val = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; | |
250 | break; | |
251 | case APCH_STATE_CSTATE_DISABLED: | |
252 | default: | |
253 | if (config & APCH_CFG_SUSCHG) { | |
254 | *val = POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN; | |
255 | } else { | |
256 | *val = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; | |
257 | if (!(status & APCH_STATUS_INDAT)) { | |
258 | if (!lbo_level) | |
259 | *val = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; | |
260 | } | |
261 | } | |
262 | break; | |
263 | } | |
264 | ||
265 | return 0; | |
266 | } | |
267 | ||
528e3504 WY |
268 | #define MAX_CURRENT_USB_HIGH 450000 |
269 | #define MAX_CURRENT_USB_LOW 90000 | |
270 | #define MAX_CURRENT_USB_PRE 45000 | |
271 | /* | |
272 | * Riset(K) = 2336 * (1V/Ichg(mA)) - 0.205 | |
273 | * Riset = 2.43K | |
274 | */ | |
275 | #define MAX_CURRENT_AC_HIGH 886527 | |
276 | #define MAX_CURRENT_AC_LOW 117305 | |
277 | #define MAX_CURRENT_AC_HIGH_PRE 88653 | |
278 | #define MAX_CURRENT_AC_LOW_PRE 11731 | |
279 | ||
280 | static int act8945a_get_current_max(struct act8945a_charger *charger, | |
281 | struct regmap *regmap, int *val) | |
282 | { | |
283 | int ret; | |
284 | unsigned int status, state; | |
285 | unsigned int acin_state; | |
286 | int chgin_level = gpiod_get_value(charger->chglev_gpio); | |
287 | ||
288 | ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status); | |
289 | if (ret < 0) | |
290 | return ret; | |
291 | ||
292 | ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state); | |
293 | if (ret < 0) | |
294 | return ret; | |
295 | ||
296 | acin_state = (state & APCH_STATE_ACINSTAT) >> 1; | |
297 | ||
298 | state &= APCH_STATE_CSTATE; | |
299 | state >>= APCH_STATE_CSTATE_SHIFT; | |
300 | ||
301 | switch (state) { | |
302 | case APCH_STATE_CSTATE_PRE: | |
303 | if (acin_state) { | |
304 | if (chgin_level) | |
305 | *val = MAX_CURRENT_AC_HIGH_PRE; | |
306 | else | |
307 | *val = MAX_CURRENT_AC_LOW_PRE; | |
308 | } else { | |
309 | *val = MAX_CURRENT_USB_PRE; | |
310 | } | |
311 | break; | |
312 | case APCH_STATE_CSTATE_FAST: | |
313 | if (acin_state) { | |
314 | if (chgin_level) | |
315 | *val = MAX_CURRENT_AC_HIGH; | |
316 | else | |
317 | *val = MAX_CURRENT_AC_LOW; | |
318 | } else { | |
319 | if (chgin_level) | |
320 | *val = MAX_CURRENT_USB_HIGH; | |
321 | else | |
322 | *val = MAX_CURRENT_USB_LOW; | |
323 | } | |
324 | break; | |
325 | case APCH_STATE_CSTATE_EOC: | |
326 | case APCH_STATE_CSTATE_DISABLED: | |
327 | default: | |
328 | *val = 0; | |
329 | break; | |
330 | } | |
331 | ||
332 | return 0; | |
333 | } | |
334 | ||
5c0e09e0 WY |
335 | static enum power_supply_property act8945a_charger_props[] = { |
336 | POWER_SUPPLY_PROP_STATUS, | |
337 | POWER_SUPPLY_PROP_CHARGE_TYPE, | |
338 | POWER_SUPPLY_PROP_TECHNOLOGY, | |
339 | POWER_SUPPLY_PROP_HEALTH, | |
369eba09 | 340 | POWER_SUPPLY_PROP_CAPACITY_LEVEL, |
528e3504 | 341 | POWER_SUPPLY_PROP_CURRENT_MAX, |
5c0e09e0 WY |
342 | POWER_SUPPLY_PROP_MODEL_NAME, |
343 | POWER_SUPPLY_PROP_MANUFACTURER | |
344 | }; | |
345 | ||
346 | static int act8945a_charger_get_property(struct power_supply *psy, | |
347 | enum power_supply_property prop, | |
348 | union power_supply_propval *val) | |
349 | { | |
350 | struct act8945a_charger *charger = power_supply_get_drvdata(psy); | |
351 | struct regmap *regmap = charger->regmap; | |
352 | int ret = 0; | |
353 | ||
354 | switch (prop) { | |
355 | case POWER_SUPPLY_PROP_STATUS: | |
356 | ret = act8945a_get_charger_state(regmap, &val->intval); | |
357 | break; | |
358 | case POWER_SUPPLY_PROP_CHARGE_TYPE: | |
359 | ret = act8945a_get_charge_type(regmap, &val->intval); | |
360 | break; | |
361 | case POWER_SUPPLY_PROP_TECHNOLOGY: | |
362 | val->intval = POWER_SUPPLY_TECHNOLOGY_LION; | |
363 | break; | |
364 | case POWER_SUPPLY_PROP_HEALTH: | |
6b021fc9 | 365 | ret = act8945a_get_battery_health(regmap, &val->intval); |
5c0e09e0 | 366 | break; |
369eba09 WY |
367 | case POWER_SUPPLY_PROP_CAPACITY_LEVEL: |
368 | ret = act8945a_get_capacity_level(charger, | |
369 | regmap, &val->intval); | |
370 | break; | |
528e3504 WY |
371 | case POWER_SUPPLY_PROP_CURRENT_MAX: |
372 | ret = act8945a_get_current_max(charger, | |
373 | regmap, &val->intval); | |
374 | break; | |
5c0e09e0 WY |
375 | case POWER_SUPPLY_PROP_MODEL_NAME: |
376 | val->strval = act8945a_charger_model; | |
377 | break; | |
378 | case POWER_SUPPLY_PROP_MANUFACTURER: | |
379 | val->strval = act8945a_charger_manufacturer; | |
380 | break; | |
381 | default: | |
382 | return -EINVAL; | |
383 | } | |
384 | ||
385 | return ret; | |
386 | } | |
387 | ||
a09209ac WY |
388 | static int act8945a_enable_interrupt(struct act8945a_charger *charger) |
389 | { | |
390 | struct regmap *regmap = charger->regmap; | |
391 | unsigned char ctrl; | |
392 | int ret; | |
393 | ||
394 | ctrl = APCH_CTRL_CHGEOCOUT | APCH_CTRL_CHGEOCIN | | |
395 | APCH_CTRL_INDIS | APCH_CTRL_INCON | | |
396 | APCH_CTRL_TEMPOUT | APCH_CTRL_TEMPIN | | |
397 | APCH_CTRL_TIMRPRE | APCH_CTRL_TIMRTOT; | |
398 | ret = regmap_write(regmap, ACT8945A_APCH_CTRL, ctrl); | |
399 | if (ret) | |
400 | return ret; | |
401 | ||
402 | ctrl = APCH_STATUS_CHGSTAT | APCH_STATUS_INSTAT | | |
403 | APCH_STATUS_TEMPSTAT | APCH_STATUS_TIMRSTAT; | |
404 | ret = regmap_write(regmap, ACT8945A_APCH_STATUS, ctrl); | |
405 | if (ret) | |
406 | return ret; | |
407 | ||
408 | return 0; | |
409 | } | |
410 | ||
10ca08b0 WY |
411 | static unsigned int act8945a_set_supply_type(struct act8945a_charger *charger, |
412 | unsigned int *type) | |
413 | { | |
414 | unsigned int status, state; | |
415 | int ret; | |
416 | ||
417 | ret = regmap_read(charger->regmap, ACT8945A_APCH_STATUS, &status); | |
418 | if (ret < 0) | |
419 | return ret; | |
420 | ||
421 | ret = regmap_read(charger->regmap, ACT8945A_APCH_STATE, &state); | |
422 | if (ret < 0) | |
423 | return ret; | |
424 | ||
425 | if (status & APCH_STATUS_INDAT) { | |
426 | if (state & APCH_STATE_ACINSTAT) | |
427 | *type = POWER_SUPPLY_TYPE_MAINS; | |
428 | else | |
429 | *type = POWER_SUPPLY_TYPE_USB; | |
430 | } else { | |
431 | *type = POWER_SUPPLY_TYPE_BATTERY; | |
432 | } | |
433 | ||
434 | return 0; | |
435 | } | |
436 | ||
a09209ac WY |
437 | static void act8945a_work(struct work_struct *work) |
438 | { | |
439 | struct act8945a_charger *charger = | |
440 | container_of(work, struct act8945a_charger, work); | |
441 | ||
10ca08b0 WY |
442 | act8945a_set_supply_type(charger, &charger->desc.type); |
443 | ||
a09209ac WY |
444 | power_supply_changed(charger->psy); |
445 | } | |
446 | ||
447 | static irqreturn_t act8945a_status_changed(int irq, void *dev_id) | |
448 | { | |
449 | struct act8945a_charger *charger = dev_id; | |
450 | ||
451 | if (charger->init_done) | |
452 | schedule_work(&charger->work); | |
453 | ||
454 | return IRQ_HANDLED; | |
455 | } | |
456 | ||
5c0e09e0 WY |
457 | #define DEFAULT_TOTAL_TIME_OUT 3 |
458 | #define DEFAULT_PRE_TIME_OUT 40 | |
459 | #define DEFAULT_INPUT_OVP_THRESHOLD 6600 | |
460 | ||
461 | static int act8945a_charger_config(struct device *dev, | |
462 | struct act8945a_charger *charger) | |
463 | { | |
464 | struct device_node *np = dev->of_node; | |
5c0e09e0 WY |
465 | struct regmap *regmap = charger->regmap; |
466 | ||
467 | u32 total_time_out; | |
468 | u32 pre_time_out; | |
469 | u32 input_voltage_threshold; | |
369eba09 | 470 | int err, ret; |
5c0e09e0 | 471 | |
1f0ba406 | 472 | unsigned int tmp; |
5c0e09e0 WY |
473 | unsigned int value = 0; |
474 | ||
475 | if (!np) { | |
476 | dev_err(dev, "no charger of node\n"); | |
477 | return -EINVAL; | |
478 | } | |
479 | ||
1f0ba406 WY |
480 | ret = regmap_read(regmap, ACT8945A_APCH_CFG, &tmp); |
481 | if (ret) | |
482 | return ret; | |
483 | ||
484 | if (tmp & APCH_CFG_SUSCHG) { | |
485 | value |= APCH_CFG_SUSCHG; | |
486 | dev_info(dev, "have been suspended\n"); | |
487 | } | |
488 | ||
369eba09 WY |
489 | charger->lbo_gpio = devm_gpiod_get_optional(dev, "active-semi,lbo", |
490 | GPIOD_IN); | |
491 | if (IS_ERR(charger->lbo_gpio)) { | |
492 | err = PTR_ERR(charger->lbo_gpio); | |
493 | dev_err(dev, "unable to claim gpio \"lbo\": %d\n", err); | |
494 | return err; | |
495 | } | |
496 | ||
497 | ret = devm_request_irq(dev, gpiod_to_irq(charger->lbo_gpio), | |
498 | act8945a_status_changed, | |
499 | (IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING), | |
500 | "act8945a_lbo_detect", charger); | |
501 | if (ret) | |
502 | dev_info(dev, "failed to request gpio \"lbo\" IRQ\n"); | |
503 | ||
528e3504 WY |
504 | charger->chglev_gpio = devm_gpiod_get_optional(dev, |
505 | "active-semi,chglev", | |
506 | GPIOD_IN); | |
507 | if (IS_ERR(charger->chglev_gpio)) { | |
508 | err = PTR_ERR(charger->chglev_gpio); | |
509 | dev_err(dev, "unable to claim gpio \"chglev\": %d\n", err); | |
510 | return err; | |
5c0e09e0 WY |
511 | } |
512 | ||
513 | if (of_property_read_u32(np, | |
514 | "active-semi,input-voltage-threshold-microvolt", | |
515 | &input_voltage_threshold)) | |
516 | input_voltage_threshold = DEFAULT_INPUT_OVP_THRESHOLD; | |
517 | ||
518 | if (of_property_read_u32(np, | |
519 | "active-semi,precondition-timeout", | |
520 | &pre_time_out)) | |
521 | pre_time_out = DEFAULT_PRE_TIME_OUT; | |
522 | ||
523 | if (of_property_read_u32(np, "active-semi,total-timeout", | |
524 | &total_time_out)) | |
525 | total_time_out = DEFAULT_TOTAL_TIME_OUT; | |
526 | ||
527 | switch (input_voltage_threshold) { | |
528 | case 8000: | |
529 | value |= APCH_CFG_OVPSET_8V; | |
530 | break; | |
531 | case 7500: | |
532 | value |= APCH_CFG_OVPSET_7V5; | |
533 | break; | |
534 | case 7000: | |
535 | value |= APCH_CFG_OVPSET_7V; | |
536 | break; | |
537 | case 6600: | |
538 | default: | |
539 | value |= APCH_CFG_OVPSET_6V6; | |
540 | break; | |
541 | } | |
542 | ||
543 | switch (pre_time_out) { | |
544 | case 60: | |
545 | value |= APCH_CFG_PRETIMO_60_MIN; | |
546 | break; | |
547 | case 80: | |
548 | value |= APCH_CFG_PRETIMO_80_MIN; | |
549 | break; | |
550 | case 0: | |
551 | value |= APCH_CFG_PRETIMO_DISABLED; | |
552 | break; | |
553 | case 40: | |
554 | default: | |
555 | value |= APCH_CFG_PRETIMO_40_MIN; | |
556 | break; | |
557 | } | |
558 | ||
559 | switch (total_time_out) { | |
560 | case 4: | |
561 | value |= APCH_CFG_TOTTIMO_4_HOUR; | |
562 | break; | |
563 | case 5: | |
564 | value |= APCH_CFG_TOTTIMO_5_HOUR; | |
565 | break; | |
566 | case 0: | |
567 | value |= APCH_CFG_TOTTIMO_DISABLED; | |
568 | break; | |
569 | case 3: | |
570 | default: | |
571 | value |= APCH_CFG_TOTTIMO_3_HOUR; | |
572 | break; | |
573 | } | |
574 | ||
575 | return regmap_write(regmap, ACT8945A_APCH_CFG, value); | |
576 | } | |
577 | ||
578 | static int act8945a_charger_probe(struct platform_device *pdev) | |
579 | { | |
580 | struct act8945a_charger *charger; | |
5c0e09e0 | 581 | struct power_supply_config psy_cfg = {}; |
a09209ac | 582 | int irq, ret; |
5c0e09e0 WY |
583 | |
584 | charger = devm_kzalloc(&pdev->dev, sizeof(*charger), GFP_KERNEL); | |
585 | if (!charger) | |
586 | return -ENOMEM; | |
587 | ||
588 | charger->regmap = dev_get_regmap(pdev->dev.parent, NULL); | |
589 | if (!charger->regmap) { | |
590 | dev_err(&pdev->dev, "Parent did not provide regmap\n"); | |
591 | return -EINVAL; | |
592 | } | |
593 | ||
5da643b2 | 594 | ret = act8945a_charger_config(&pdev->dev, charger); |
5c0e09e0 WY |
595 | if (ret) |
596 | return ret; | |
597 | ||
a09209ac WY |
598 | irq = of_irq_get(pdev->dev.of_node, 0); |
599 | if (irq == -EPROBE_DEFER) { | |
600 | dev_err(&pdev->dev, "failed to find IRQ number\n"); | |
601 | return -EPROBE_DEFER; | |
602 | } | |
603 | ||
604 | ret = devm_request_irq(&pdev->dev, irq, act8945a_status_changed, | |
605 | IRQF_TRIGGER_FALLING, "act8945a_interrupt", | |
606 | charger); | |
607 | if (ret) { | |
608 | dev_err(&pdev->dev, "failed to request nIRQ pin IRQ\n"); | |
609 | return ret; | |
610 | } | |
611 | ||
10ca08b0 WY |
612 | charger->desc.name = "act8945a-charger"; |
613 | charger->desc.get_property = act8945a_charger_get_property; | |
614 | charger->desc.properties = act8945a_charger_props; | |
615 | charger->desc.num_properties = ARRAY_SIZE(act8945a_charger_props); | |
616 | ||
617 | ret = act8945a_set_supply_type(charger, &charger->desc.type); | |
618 | if (ret) | |
619 | return -EINVAL; | |
620 | ||
5da643b2 | 621 | psy_cfg.of_node = pdev->dev.of_node; |
5c0e09e0 WY |
622 | psy_cfg.drv_data = charger; |
623 | ||
a09209ac | 624 | charger->psy = devm_power_supply_register(&pdev->dev, |
10ca08b0 | 625 | &charger->desc, |
a09209ac WY |
626 | &psy_cfg); |
627 | if (IS_ERR(charger->psy)) { | |
5c0e09e0 | 628 | dev_err(&pdev->dev, "failed to register power supply\n"); |
a09209ac | 629 | return PTR_ERR(charger->psy); |
5c0e09e0 WY |
630 | } |
631 | ||
a09209ac WY |
632 | platform_set_drvdata(pdev, charger); |
633 | ||
634 | INIT_WORK(&charger->work, act8945a_work); | |
635 | ||
636 | ret = act8945a_enable_interrupt(charger); | |
637 | if (ret) | |
638 | return -EIO; | |
639 | ||
640 | charger->init_done = true; | |
641 | ||
642 | return 0; | |
643 | } | |
644 | ||
645 | static int act8945a_charger_remove(struct platform_device *pdev) | |
646 | { | |
647 | struct act8945a_charger *charger = platform_get_drvdata(pdev); | |
648 | ||
649 | charger->init_done = false; | |
650 | cancel_work_sync(&charger->work); | |
651 | ||
5c0e09e0 WY |
652 | return 0; |
653 | } | |
654 | ||
655 | static struct platform_driver act8945a_charger_driver = { | |
656 | .driver = { | |
657 | .name = "act8945a-charger", | |
658 | }, | |
659 | .probe = act8945a_charger_probe, | |
a09209ac | 660 | .remove = act8945a_charger_remove, |
5c0e09e0 WY |
661 | }; |
662 | module_platform_driver(act8945a_charger_driver); | |
663 | ||
664 | MODULE_DESCRIPTION("Active-semi ACT8945A ActivePath charger driver"); | |
665 | MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>"); | |
666 | MODULE_LICENSE("GPL"); |