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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
5c0e09e0 WY |
2 | /* |
3 | * Power supply driver for the Active-semi ACT8945A PMIC | |
4 | * | |
5 | * Copyright (C) 2015 Atmel Corporation | |
6 | * | |
7 | * Author: Wenyou Yang <wenyou.yang@atmel.com> | |
5c0e09e0 | 8 | */ |
a09209ac | 9 | #include <linux/interrupt.h> |
5c0e09e0 WY |
10 | #include <linux/module.h> |
11 | #include <linux/of.h> | |
a09209ac | 12 | #include <linux/of_irq.h> |
5c0e09e0 WY |
13 | #include <linux/platform_device.h> |
14 | #include <linux/power_supply.h> | |
15 | #include <linux/regmap.h> | |
369eba09 | 16 | #include <linux/gpio/consumer.h> |
5c0e09e0 WY |
17 | |
18 | static const char *act8945a_charger_model = "ACT8945A"; | |
19 | static const char *act8945a_charger_manufacturer = "Active-semi"; | |
20 | ||
21 | /** | |
22 | * ACT8945A Charger Register Map | |
23 | */ | |
24 | ||
25 | /* 0x70: Reserved */ | |
26 | #define ACT8945A_APCH_CFG 0x71 | |
27 | #define ACT8945A_APCH_STATUS 0x78 | |
28 | #define ACT8945A_APCH_CTRL 0x79 | |
29 | #define ACT8945A_APCH_STATE 0x7A | |
30 | ||
31 | /* ACT8945A_APCH_CFG */ | |
32 | #define APCH_CFG_OVPSET (0x3 << 0) | |
33 | #define APCH_CFG_OVPSET_6V6 (0x0 << 0) | |
34 | #define APCH_CFG_OVPSET_7V (0x1 << 0) | |
35 | #define APCH_CFG_OVPSET_7V5 (0x2 << 0) | |
36 | #define APCH_CFG_OVPSET_8V (0x3 << 0) | |
37 | #define APCH_CFG_PRETIMO (0x3 << 2) | |
38 | #define APCH_CFG_PRETIMO_40_MIN (0x0 << 2) | |
39 | #define APCH_CFG_PRETIMO_60_MIN (0x1 << 2) | |
40 | #define APCH_CFG_PRETIMO_80_MIN (0x2 << 2) | |
41 | #define APCH_CFG_PRETIMO_DISABLED (0x3 << 2) | |
42 | #define APCH_CFG_TOTTIMO (0x3 << 4) | |
43 | #define APCH_CFG_TOTTIMO_3_HOUR (0x0 << 4) | |
44 | #define APCH_CFG_TOTTIMO_4_HOUR (0x1 << 4) | |
45 | #define APCH_CFG_TOTTIMO_5_HOUR (0x2 << 4) | |
46 | #define APCH_CFG_TOTTIMO_DISABLED (0x3 << 4) | |
47 | #define APCH_CFG_SUSCHG (0x1 << 7) | |
48 | ||
49 | #define APCH_STATUS_CHGDAT BIT(0) | |
50 | #define APCH_STATUS_INDAT BIT(1) | |
51 | #define APCH_STATUS_TEMPDAT BIT(2) | |
52 | #define APCH_STATUS_TIMRDAT BIT(3) | |
53 | #define APCH_STATUS_CHGSTAT BIT(4) | |
54 | #define APCH_STATUS_INSTAT BIT(5) | |
55 | #define APCH_STATUS_TEMPSTAT BIT(6) | |
56 | #define APCH_STATUS_TIMRSTAT BIT(7) | |
57 | ||
58 | #define APCH_CTRL_CHGEOCOUT BIT(0) | |
59 | #define APCH_CTRL_INDIS BIT(1) | |
60 | #define APCH_CTRL_TEMPOUT BIT(2) | |
61 | #define APCH_CTRL_TIMRPRE BIT(3) | |
62 | #define APCH_CTRL_CHGEOCIN BIT(4) | |
63 | #define APCH_CTRL_INCON BIT(5) | |
64 | #define APCH_CTRL_TEMPIN BIT(6) | |
65 | #define APCH_CTRL_TIMRTOT BIT(7) | |
66 | ||
67 | #define APCH_STATE_ACINSTAT (0x1 << 1) | |
68 | #define APCH_STATE_CSTATE (0x3 << 4) | |
69 | #define APCH_STATE_CSTATE_SHIFT 4 | |
70 | #define APCH_STATE_CSTATE_DISABLED 0x00 | |
71 | #define APCH_STATE_CSTATE_EOC 0x01 | |
72 | #define APCH_STATE_CSTATE_FAST 0x02 | |
73 | #define APCH_STATE_CSTATE_PRE 0x03 | |
74 | ||
75 | struct act8945a_charger { | |
a09209ac | 76 | struct power_supply *psy; |
10ca08b0 | 77 | struct power_supply_desc desc; |
5c0e09e0 | 78 | struct regmap *regmap; |
a09209ac WY |
79 | struct work_struct work; |
80 | ||
81 | bool init_done; | |
369eba09 | 82 | struct gpio_desc *lbo_gpio; |
528e3504 | 83 | struct gpio_desc *chglev_gpio; |
5c0e09e0 WY |
84 | }; |
85 | ||
86 | static int act8945a_get_charger_state(struct regmap *regmap, int *val) | |
87 | { | |
88 | int ret; | |
89 | unsigned int status, state; | |
90 | ||
91 | ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status); | |
92 | if (ret < 0) | |
93 | return ret; | |
94 | ||
95 | ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state); | |
96 | if (ret < 0) | |
97 | return ret; | |
98 | ||
99 | state &= APCH_STATE_CSTATE; | |
100 | state >>= APCH_STATE_CSTATE_SHIFT; | |
101 | ||
1f0ba406 WY |
102 | switch (state) { |
103 | case APCH_STATE_CSTATE_PRE: | |
104 | case APCH_STATE_CSTATE_FAST: | |
105 | *val = POWER_SUPPLY_STATUS_CHARGING; | |
106 | break; | |
107 | case APCH_STATE_CSTATE_EOC: | |
5c0e09e0 WY |
108 | if (status & APCH_STATUS_CHGDAT) |
109 | *val = POWER_SUPPLY_STATUS_FULL; | |
1f0ba406 WY |
110 | else |
111 | *val = POWER_SUPPLY_STATUS_CHARGING; | |
112 | break; | |
113 | case APCH_STATE_CSTATE_DISABLED: | |
114 | default: | |
115 | if (!(status & APCH_STATUS_INDAT)) | |
116 | *val = POWER_SUPPLY_STATUS_DISCHARGING; | |
5c0e09e0 WY |
117 | else |
118 | *val = POWER_SUPPLY_STATUS_NOT_CHARGING; | |
1f0ba406 | 119 | break; |
5c0e09e0 WY |
120 | } |
121 | ||
122 | return 0; | |
123 | } | |
124 | ||
125 | static int act8945a_get_charge_type(struct regmap *regmap, int *val) | |
126 | { | |
127 | int ret; | |
1f0ba406 WY |
128 | unsigned int status, state; |
129 | ||
130 | ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status); | |
131 | if (ret < 0) | |
132 | return ret; | |
5c0e09e0 WY |
133 | |
134 | ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state); | |
135 | if (ret < 0) | |
136 | return ret; | |
137 | ||
138 | state &= APCH_STATE_CSTATE; | |
139 | state >>= APCH_STATE_CSTATE_SHIFT; | |
140 | ||
141 | switch (state) { | |
142 | case APCH_STATE_CSTATE_PRE: | |
143 | *val = POWER_SUPPLY_CHARGE_TYPE_TRICKLE; | |
144 | break; | |
145 | case APCH_STATE_CSTATE_FAST: | |
146 | *val = POWER_SUPPLY_CHARGE_TYPE_FAST; | |
147 | break; | |
148 | case APCH_STATE_CSTATE_EOC: | |
1f0ba406 WY |
149 | *val = POWER_SUPPLY_CHARGE_TYPE_NONE; |
150 | break; | |
5c0e09e0 WY |
151 | case APCH_STATE_CSTATE_DISABLED: |
152 | default: | |
1f0ba406 WY |
153 | if (!(status & APCH_STATUS_INDAT)) |
154 | *val = POWER_SUPPLY_CHARGE_TYPE_NONE; | |
155 | else | |
156 | *val = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN; | |
157 | break; | |
5c0e09e0 WY |
158 | } |
159 | ||
160 | return 0; | |
161 | } | |
162 | ||
6b021fc9 | 163 | static int act8945a_get_battery_health(struct regmap *regmap, int *val) |
5c0e09e0 WY |
164 | { |
165 | int ret; | |
1f0ba406 | 166 | unsigned int status, state, config; |
5c0e09e0 WY |
167 | |
168 | ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status); | |
169 | if (ret < 0) | |
170 | return ret; | |
171 | ||
1f0ba406 WY |
172 | ret = regmap_read(regmap, ACT8945A_APCH_CFG, &config); |
173 | if (ret < 0) | |
174 | return ret; | |
175 | ||
176 | ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state); | |
177 | if (ret < 0) | |
178 | return ret; | |
179 | ||
180 | state &= APCH_STATE_CSTATE; | |
181 | state >>= APCH_STATE_CSTATE_SHIFT; | |
182 | ||
183 | switch (state) { | |
184 | case APCH_STATE_CSTATE_DISABLED: | |
185 | if (config & APCH_CFG_SUSCHG) { | |
186 | *val = POWER_SUPPLY_HEALTH_UNKNOWN; | |
187 | } else if (status & APCH_STATUS_INDAT) { | |
188 | if (!(status & APCH_STATUS_TEMPDAT)) | |
189 | *val = POWER_SUPPLY_HEALTH_OVERHEAT; | |
190 | else if (status & APCH_STATUS_TIMRDAT) | |
191 | *val = POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE; | |
192 | else | |
193 | *val = POWER_SUPPLY_HEALTH_OVERVOLTAGE; | |
194 | } else { | |
195 | *val = POWER_SUPPLY_HEALTH_GOOD; | |
196 | } | |
197 | break; | |
198 | case APCH_STATE_CSTATE_PRE: | |
199 | case APCH_STATE_CSTATE_FAST: | |
200 | case APCH_STATE_CSTATE_EOC: | |
201 | default: | |
5c0e09e0 | 202 | *val = POWER_SUPPLY_HEALTH_GOOD; |
1f0ba406 WY |
203 | break; |
204 | } | |
5c0e09e0 WY |
205 | |
206 | return 0; | |
207 | } | |
208 | ||
369eba09 WY |
209 | static int act8945a_get_capacity_level(struct act8945a_charger *charger, |
210 | struct regmap *regmap, int *val) | |
211 | { | |
212 | int ret; | |
213 | unsigned int status, state, config; | |
214 | int lbo_level = gpiod_get_value(charger->lbo_gpio); | |
215 | ||
216 | ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status); | |
217 | if (ret < 0) | |
218 | return ret; | |
219 | ||
220 | ret = regmap_read(regmap, ACT8945A_APCH_CFG, &config); | |
221 | if (ret < 0) | |
222 | return ret; | |
223 | ||
224 | ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state); | |
225 | if (ret < 0) | |
226 | return ret; | |
227 | ||
228 | state &= APCH_STATE_CSTATE; | |
229 | state >>= APCH_STATE_CSTATE_SHIFT; | |
230 | ||
231 | switch (state) { | |
232 | case APCH_STATE_CSTATE_PRE: | |
233 | *val = POWER_SUPPLY_CAPACITY_LEVEL_LOW; | |
234 | break; | |
235 | case APCH_STATE_CSTATE_FAST: | |
236 | if (lbo_level) | |
237 | *val = POWER_SUPPLY_CAPACITY_LEVEL_HIGH; | |
238 | else | |
239 | *val = POWER_SUPPLY_CAPACITY_LEVEL_LOW; | |
240 | break; | |
241 | case APCH_STATE_CSTATE_EOC: | |
242 | if (status & APCH_STATUS_CHGDAT) | |
243 | *val = POWER_SUPPLY_CAPACITY_LEVEL_FULL; | |
244 | else | |
245 | *val = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; | |
246 | break; | |
247 | case APCH_STATE_CSTATE_DISABLED: | |
248 | default: | |
249 | if (config & APCH_CFG_SUSCHG) { | |
250 | *val = POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN; | |
251 | } else { | |
252 | *val = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; | |
253 | if (!(status & APCH_STATUS_INDAT)) { | |
254 | if (!lbo_level) | |
255 | *val = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; | |
256 | } | |
257 | } | |
258 | break; | |
259 | } | |
260 | ||
261 | return 0; | |
262 | } | |
263 | ||
528e3504 WY |
264 | #define MAX_CURRENT_USB_HIGH 450000 |
265 | #define MAX_CURRENT_USB_LOW 90000 | |
266 | #define MAX_CURRENT_USB_PRE 45000 | |
267 | /* | |
268 | * Riset(K) = 2336 * (1V/Ichg(mA)) - 0.205 | |
269 | * Riset = 2.43K | |
270 | */ | |
271 | #define MAX_CURRENT_AC_HIGH 886527 | |
272 | #define MAX_CURRENT_AC_LOW 117305 | |
273 | #define MAX_CURRENT_AC_HIGH_PRE 88653 | |
274 | #define MAX_CURRENT_AC_LOW_PRE 11731 | |
275 | ||
276 | static int act8945a_get_current_max(struct act8945a_charger *charger, | |
277 | struct regmap *regmap, int *val) | |
278 | { | |
279 | int ret; | |
280 | unsigned int status, state; | |
281 | unsigned int acin_state; | |
282 | int chgin_level = gpiod_get_value(charger->chglev_gpio); | |
283 | ||
284 | ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status); | |
285 | if (ret < 0) | |
286 | return ret; | |
287 | ||
288 | ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state); | |
289 | if (ret < 0) | |
290 | return ret; | |
291 | ||
292 | acin_state = (state & APCH_STATE_ACINSTAT) >> 1; | |
293 | ||
294 | state &= APCH_STATE_CSTATE; | |
295 | state >>= APCH_STATE_CSTATE_SHIFT; | |
296 | ||
297 | switch (state) { | |
298 | case APCH_STATE_CSTATE_PRE: | |
299 | if (acin_state) { | |
300 | if (chgin_level) | |
301 | *val = MAX_CURRENT_AC_HIGH_PRE; | |
302 | else | |
303 | *val = MAX_CURRENT_AC_LOW_PRE; | |
304 | } else { | |
305 | *val = MAX_CURRENT_USB_PRE; | |
306 | } | |
307 | break; | |
308 | case APCH_STATE_CSTATE_FAST: | |
309 | if (acin_state) { | |
310 | if (chgin_level) | |
311 | *val = MAX_CURRENT_AC_HIGH; | |
312 | else | |
313 | *val = MAX_CURRENT_AC_LOW; | |
314 | } else { | |
315 | if (chgin_level) | |
316 | *val = MAX_CURRENT_USB_HIGH; | |
317 | else | |
318 | *val = MAX_CURRENT_USB_LOW; | |
319 | } | |
320 | break; | |
321 | case APCH_STATE_CSTATE_EOC: | |
322 | case APCH_STATE_CSTATE_DISABLED: | |
323 | default: | |
324 | *val = 0; | |
325 | break; | |
326 | } | |
327 | ||
328 | return 0; | |
329 | } | |
330 | ||
5c0e09e0 WY |
331 | static enum power_supply_property act8945a_charger_props[] = { |
332 | POWER_SUPPLY_PROP_STATUS, | |
333 | POWER_SUPPLY_PROP_CHARGE_TYPE, | |
334 | POWER_SUPPLY_PROP_TECHNOLOGY, | |
335 | POWER_SUPPLY_PROP_HEALTH, | |
369eba09 | 336 | POWER_SUPPLY_PROP_CAPACITY_LEVEL, |
528e3504 | 337 | POWER_SUPPLY_PROP_CURRENT_MAX, |
5c0e09e0 WY |
338 | POWER_SUPPLY_PROP_MODEL_NAME, |
339 | POWER_SUPPLY_PROP_MANUFACTURER | |
340 | }; | |
341 | ||
342 | static int act8945a_charger_get_property(struct power_supply *psy, | |
343 | enum power_supply_property prop, | |
344 | union power_supply_propval *val) | |
345 | { | |
346 | struct act8945a_charger *charger = power_supply_get_drvdata(psy); | |
347 | struct regmap *regmap = charger->regmap; | |
348 | int ret = 0; | |
349 | ||
350 | switch (prop) { | |
351 | case POWER_SUPPLY_PROP_STATUS: | |
352 | ret = act8945a_get_charger_state(regmap, &val->intval); | |
353 | break; | |
354 | case POWER_SUPPLY_PROP_CHARGE_TYPE: | |
355 | ret = act8945a_get_charge_type(regmap, &val->intval); | |
356 | break; | |
357 | case POWER_SUPPLY_PROP_TECHNOLOGY: | |
358 | val->intval = POWER_SUPPLY_TECHNOLOGY_LION; | |
359 | break; | |
360 | case POWER_SUPPLY_PROP_HEALTH: | |
6b021fc9 | 361 | ret = act8945a_get_battery_health(regmap, &val->intval); |
5c0e09e0 | 362 | break; |
369eba09 WY |
363 | case POWER_SUPPLY_PROP_CAPACITY_LEVEL: |
364 | ret = act8945a_get_capacity_level(charger, | |
365 | regmap, &val->intval); | |
366 | break; | |
528e3504 WY |
367 | case POWER_SUPPLY_PROP_CURRENT_MAX: |
368 | ret = act8945a_get_current_max(charger, | |
369 | regmap, &val->intval); | |
370 | break; | |
5c0e09e0 WY |
371 | case POWER_SUPPLY_PROP_MODEL_NAME: |
372 | val->strval = act8945a_charger_model; | |
373 | break; | |
374 | case POWER_SUPPLY_PROP_MANUFACTURER: | |
375 | val->strval = act8945a_charger_manufacturer; | |
376 | break; | |
377 | default: | |
378 | return -EINVAL; | |
379 | } | |
380 | ||
381 | return ret; | |
382 | } | |
383 | ||
a09209ac WY |
384 | static int act8945a_enable_interrupt(struct act8945a_charger *charger) |
385 | { | |
386 | struct regmap *regmap = charger->regmap; | |
387 | unsigned char ctrl; | |
388 | int ret; | |
389 | ||
390 | ctrl = APCH_CTRL_CHGEOCOUT | APCH_CTRL_CHGEOCIN | | |
391 | APCH_CTRL_INDIS | APCH_CTRL_INCON | | |
392 | APCH_CTRL_TEMPOUT | APCH_CTRL_TEMPIN | | |
393 | APCH_CTRL_TIMRPRE | APCH_CTRL_TIMRTOT; | |
394 | ret = regmap_write(regmap, ACT8945A_APCH_CTRL, ctrl); | |
395 | if (ret) | |
396 | return ret; | |
397 | ||
398 | ctrl = APCH_STATUS_CHGSTAT | APCH_STATUS_INSTAT | | |
399 | APCH_STATUS_TEMPSTAT | APCH_STATUS_TIMRSTAT; | |
400 | ret = regmap_write(regmap, ACT8945A_APCH_STATUS, ctrl); | |
401 | if (ret) | |
402 | return ret; | |
403 | ||
404 | return 0; | |
405 | } | |
406 | ||
10ca08b0 WY |
407 | static unsigned int act8945a_set_supply_type(struct act8945a_charger *charger, |
408 | unsigned int *type) | |
409 | { | |
410 | unsigned int status, state; | |
411 | int ret; | |
412 | ||
413 | ret = regmap_read(charger->regmap, ACT8945A_APCH_STATUS, &status); | |
414 | if (ret < 0) | |
415 | return ret; | |
416 | ||
417 | ret = regmap_read(charger->regmap, ACT8945A_APCH_STATE, &state); | |
418 | if (ret < 0) | |
419 | return ret; | |
420 | ||
421 | if (status & APCH_STATUS_INDAT) { | |
422 | if (state & APCH_STATE_ACINSTAT) | |
423 | *type = POWER_SUPPLY_TYPE_MAINS; | |
424 | else | |
425 | *type = POWER_SUPPLY_TYPE_USB; | |
426 | } else { | |
427 | *type = POWER_SUPPLY_TYPE_BATTERY; | |
428 | } | |
429 | ||
430 | return 0; | |
431 | } | |
432 | ||
a09209ac WY |
433 | static void act8945a_work(struct work_struct *work) |
434 | { | |
435 | struct act8945a_charger *charger = | |
436 | container_of(work, struct act8945a_charger, work); | |
437 | ||
10ca08b0 WY |
438 | act8945a_set_supply_type(charger, &charger->desc.type); |
439 | ||
a09209ac WY |
440 | power_supply_changed(charger->psy); |
441 | } | |
442 | ||
443 | static irqreturn_t act8945a_status_changed(int irq, void *dev_id) | |
444 | { | |
445 | struct act8945a_charger *charger = dev_id; | |
446 | ||
447 | if (charger->init_done) | |
448 | schedule_work(&charger->work); | |
449 | ||
450 | return IRQ_HANDLED; | |
451 | } | |
452 | ||
5c0e09e0 WY |
453 | #define DEFAULT_TOTAL_TIME_OUT 3 |
454 | #define DEFAULT_PRE_TIME_OUT 40 | |
455 | #define DEFAULT_INPUT_OVP_THRESHOLD 6600 | |
456 | ||
457 | static int act8945a_charger_config(struct device *dev, | |
458 | struct act8945a_charger *charger) | |
459 | { | |
460 | struct device_node *np = dev->of_node; | |
5c0e09e0 WY |
461 | struct regmap *regmap = charger->regmap; |
462 | ||
463 | u32 total_time_out; | |
464 | u32 pre_time_out; | |
465 | u32 input_voltage_threshold; | |
369eba09 | 466 | int err, ret; |
5c0e09e0 | 467 | |
1f0ba406 | 468 | unsigned int tmp; |
5c0e09e0 WY |
469 | unsigned int value = 0; |
470 | ||
471 | if (!np) { | |
472 | dev_err(dev, "no charger of node\n"); | |
473 | return -EINVAL; | |
474 | } | |
475 | ||
1f0ba406 WY |
476 | ret = regmap_read(regmap, ACT8945A_APCH_CFG, &tmp); |
477 | if (ret) | |
478 | return ret; | |
479 | ||
480 | if (tmp & APCH_CFG_SUSCHG) { | |
481 | value |= APCH_CFG_SUSCHG; | |
482 | dev_info(dev, "have been suspended\n"); | |
483 | } | |
484 | ||
369eba09 WY |
485 | charger->lbo_gpio = devm_gpiod_get_optional(dev, "active-semi,lbo", |
486 | GPIOD_IN); | |
487 | if (IS_ERR(charger->lbo_gpio)) { | |
488 | err = PTR_ERR(charger->lbo_gpio); | |
489 | dev_err(dev, "unable to claim gpio \"lbo\": %d\n", err); | |
490 | return err; | |
491 | } | |
492 | ||
493 | ret = devm_request_irq(dev, gpiod_to_irq(charger->lbo_gpio), | |
494 | act8945a_status_changed, | |
495 | (IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING), | |
496 | "act8945a_lbo_detect", charger); | |
497 | if (ret) | |
498 | dev_info(dev, "failed to request gpio \"lbo\" IRQ\n"); | |
499 | ||
528e3504 WY |
500 | charger->chglev_gpio = devm_gpiod_get_optional(dev, |
501 | "active-semi,chglev", | |
502 | GPIOD_IN); | |
503 | if (IS_ERR(charger->chglev_gpio)) { | |
504 | err = PTR_ERR(charger->chglev_gpio); | |
505 | dev_err(dev, "unable to claim gpio \"chglev\": %d\n", err); | |
506 | return err; | |
5c0e09e0 WY |
507 | } |
508 | ||
509 | if (of_property_read_u32(np, | |
510 | "active-semi,input-voltage-threshold-microvolt", | |
511 | &input_voltage_threshold)) | |
512 | input_voltage_threshold = DEFAULT_INPUT_OVP_THRESHOLD; | |
513 | ||
514 | if (of_property_read_u32(np, | |
515 | "active-semi,precondition-timeout", | |
516 | &pre_time_out)) | |
517 | pre_time_out = DEFAULT_PRE_TIME_OUT; | |
518 | ||
519 | if (of_property_read_u32(np, "active-semi,total-timeout", | |
520 | &total_time_out)) | |
521 | total_time_out = DEFAULT_TOTAL_TIME_OUT; | |
522 | ||
523 | switch (input_voltage_threshold) { | |
524 | case 8000: | |
525 | value |= APCH_CFG_OVPSET_8V; | |
526 | break; | |
527 | case 7500: | |
528 | value |= APCH_CFG_OVPSET_7V5; | |
529 | break; | |
530 | case 7000: | |
531 | value |= APCH_CFG_OVPSET_7V; | |
532 | break; | |
533 | case 6600: | |
534 | default: | |
535 | value |= APCH_CFG_OVPSET_6V6; | |
536 | break; | |
537 | } | |
538 | ||
539 | switch (pre_time_out) { | |
540 | case 60: | |
541 | value |= APCH_CFG_PRETIMO_60_MIN; | |
542 | break; | |
543 | case 80: | |
544 | value |= APCH_CFG_PRETIMO_80_MIN; | |
545 | break; | |
546 | case 0: | |
547 | value |= APCH_CFG_PRETIMO_DISABLED; | |
548 | break; | |
549 | case 40: | |
550 | default: | |
551 | value |= APCH_CFG_PRETIMO_40_MIN; | |
552 | break; | |
553 | } | |
554 | ||
555 | switch (total_time_out) { | |
556 | case 4: | |
557 | value |= APCH_CFG_TOTTIMO_4_HOUR; | |
558 | break; | |
559 | case 5: | |
560 | value |= APCH_CFG_TOTTIMO_5_HOUR; | |
561 | break; | |
562 | case 0: | |
563 | value |= APCH_CFG_TOTTIMO_DISABLED; | |
564 | break; | |
565 | case 3: | |
566 | default: | |
567 | value |= APCH_CFG_TOTTIMO_3_HOUR; | |
568 | break; | |
569 | } | |
570 | ||
571 | return regmap_write(regmap, ACT8945A_APCH_CFG, value); | |
572 | } | |
573 | ||
574 | static int act8945a_charger_probe(struct platform_device *pdev) | |
575 | { | |
576 | struct act8945a_charger *charger; | |
5c0e09e0 | 577 | struct power_supply_config psy_cfg = {}; |
a09209ac | 578 | int irq, ret; |
5c0e09e0 WY |
579 | |
580 | charger = devm_kzalloc(&pdev->dev, sizeof(*charger), GFP_KERNEL); | |
581 | if (!charger) | |
582 | return -ENOMEM; | |
583 | ||
584 | charger->regmap = dev_get_regmap(pdev->dev.parent, NULL); | |
585 | if (!charger->regmap) { | |
586 | dev_err(&pdev->dev, "Parent did not provide regmap\n"); | |
587 | return -EINVAL; | |
588 | } | |
589 | ||
5da643b2 | 590 | ret = act8945a_charger_config(&pdev->dev, charger); |
5c0e09e0 WY |
591 | if (ret) |
592 | return ret; | |
593 | ||
a09209ac | 594 | irq = of_irq_get(pdev->dev.of_node, 0); |
648b8eba | 595 | if (irq <= 0) { |
a09209ac | 596 | dev_err(&pdev->dev, "failed to find IRQ number\n"); |
648b8eba | 597 | return irq ?: -ENXIO; |
a09209ac WY |
598 | } |
599 | ||
600 | ret = devm_request_irq(&pdev->dev, irq, act8945a_status_changed, | |
601 | IRQF_TRIGGER_FALLING, "act8945a_interrupt", | |
602 | charger); | |
603 | if (ret) { | |
604 | dev_err(&pdev->dev, "failed to request nIRQ pin IRQ\n"); | |
605 | return ret; | |
606 | } | |
607 | ||
10ca08b0 WY |
608 | charger->desc.name = "act8945a-charger"; |
609 | charger->desc.get_property = act8945a_charger_get_property; | |
610 | charger->desc.properties = act8945a_charger_props; | |
611 | charger->desc.num_properties = ARRAY_SIZE(act8945a_charger_props); | |
612 | ||
613 | ret = act8945a_set_supply_type(charger, &charger->desc.type); | |
614 | if (ret) | |
615 | return -EINVAL; | |
616 | ||
5da643b2 | 617 | psy_cfg.of_node = pdev->dev.of_node; |
5c0e09e0 WY |
618 | psy_cfg.drv_data = charger; |
619 | ||
a09209ac | 620 | charger->psy = devm_power_supply_register(&pdev->dev, |
10ca08b0 | 621 | &charger->desc, |
a09209ac WY |
622 | &psy_cfg); |
623 | if (IS_ERR(charger->psy)) { | |
5c0e09e0 | 624 | dev_err(&pdev->dev, "failed to register power supply\n"); |
a09209ac | 625 | return PTR_ERR(charger->psy); |
5c0e09e0 WY |
626 | } |
627 | ||
a09209ac WY |
628 | platform_set_drvdata(pdev, charger); |
629 | ||
630 | INIT_WORK(&charger->work, act8945a_work); | |
631 | ||
632 | ret = act8945a_enable_interrupt(charger); | |
633 | if (ret) | |
634 | return -EIO; | |
635 | ||
636 | charger->init_done = true; | |
637 | ||
638 | return 0; | |
639 | } | |
640 | ||
641 | static int act8945a_charger_remove(struct platform_device *pdev) | |
642 | { | |
643 | struct act8945a_charger *charger = platform_get_drvdata(pdev); | |
644 | ||
645 | charger->init_done = false; | |
646 | cancel_work_sync(&charger->work); | |
647 | ||
5c0e09e0 WY |
648 | return 0; |
649 | } | |
650 | ||
651 | static struct platform_driver act8945a_charger_driver = { | |
652 | .driver = { | |
653 | .name = "act8945a-charger", | |
654 | }, | |
655 | .probe = act8945a_charger_probe, | |
a09209ac | 656 | .remove = act8945a_charger_remove, |
5c0e09e0 WY |
657 | }; |
658 | module_platform_driver(act8945a_charger_driver); | |
659 | ||
660 | MODULE_DESCRIPTION("Active-semi ACT8945A ActivePath charger driver"); | |
661 | MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>"); | |
662 | MODULE_LICENSE("GPL"); |