1 // SPDX-License-Identifier: GPL-2.0
2 // BQ256XX Battery Charger Driver
3 // Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/
4
5 #include <linux/err.h>
6 #include <linux/i2c.h>
7 #include <linux/init.h>
8 #include <linux/interrupt.h>
9 #include <linux/kernel.h>
10 #include <linux/module.h>
11 #include <linux/gpio/consumer.h>
12 #include <linux/power_supply.h>
13 #include <linux/regmap.h>
14 #include <linux/types.h>
15 #include <linux/usb/phy.h>
16 #include <linux/device.h>
17 #include <linux/moduleparam.h>
18 #include <linux/slab.h>
19 #include <linux/acpi.h>
20
21 #define BQ256XX_MANUFACTURER "Texas Instruments"
22
23 #define BQ256XX_INPUT_CURRENT_LIMIT 0x00
24 #define BQ256XX_CHARGER_CONTROL_0 0x01
25 #define BQ256XX_CHARGE_CURRENT_LIMIT 0x02
26 #define BQ256XX_PRECHG_AND_TERM_CURR_LIM 0x03
27 #define BQ256XX_BATTERY_VOLTAGE_LIMIT 0x04
28 #define BQ256XX_CHARGER_CONTROL_1 0x05
29 #define BQ256XX_CHARGER_CONTROL_2 0x06
30 #define BQ256XX_CHARGER_CONTROL_3 0x07
31 #define BQ256XX_CHARGER_STATUS_0 0x08
32 #define BQ256XX_CHARGER_STATUS_1 0x09
33 #define BQ256XX_CHARGER_STATUS_2 0x0a
34 #define BQ256XX_PART_INFORMATION 0x0b
35 #define BQ256XX_CHARGER_CONTROL_4 0x0c
36
37 #define BQ256XX_IINDPM_MASK GENMASK(4, 0)
38 #define BQ256XX_IINDPM_STEP_uA 100000
39 #define BQ256XX_IINDPM_OFFSET_uA 100000
40 #define BQ256XX_IINDPM_MIN_uA 100000
41 #define BQ256XX_IINDPM_MAX_uA 3200000
42 #define BQ256XX_IINDPM_DEF_uA 2400000
43
44 #define BQ256XX_VINDPM_MASK GENMASK(3, 0)
45 #define BQ256XX_VINDPM_STEP_uV 100000
46 #define BQ256XX_VINDPM_OFFSET_uV 3900000
47 #define BQ256XX_VINDPM_MIN_uV 3900000
48 #define BQ256XX_VINDPM_MAX_uV 5400000
49 #define BQ256XX_VINDPM_DEF_uV 4500000
50
51 #define BQ256XX_VBATREG_MASK GENMASK(7, 3)
52 #define BQ2560X_VBATREG_STEP_uV 32000
53 #define BQ2560X_VBATREG_OFFSET_uV 3856000
54 #define BQ2560X_VBATREG_MIN_uV 3856000
55 #define BQ2560X_VBATREG_MAX_uV 4624000
56 #define BQ2560X_VBATREG_DEF_uV 4208000
57 #define BQ25601D_VBATREG_OFFSET_uV 3847000
58 #define BQ25601D_VBATREG_MIN_uV 3847000
59 #define BQ25601D_VBATREG_MAX_uV 4615000
60 #define BQ25601D_VBATREG_DEF_uV 4199000
61 #define BQ2561X_VBATREG_STEP_uV 10000
62 #define BQ25611D_VBATREG_MIN_uV 3494000
63 #define BQ25611D_VBATREG_MAX_uV 4510000
64 #define BQ25611D_VBATREG_DEF_uV 4190000
65 #define BQ25618_VBATREG_MIN_uV 3504000
66 #define BQ25618_VBATREG_MAX_uV 4500000
67 #define BQ25618_VBATREG_DEF_uV 4200000
68 #define BQ256XX_VBATREG_BIT_SHIFT 3
69 #define BQ2561X_VBATREG_THRESH 0x8
70 #define BQ25611D_VBATREG_THRESH_uV 4290000
71 #define BQ25618_VBATREG_THRESH_uV 4300000
72
73 #define BQ256XX_ITERM_MASK GENMASK(3, 0)
74 #define BQ256XX_ITERM_STEP_uA 60000
75 #define BQ256XX_ITERM_OFFSET_uA 60000
76 #define BQ256XX_ITERM_MIN_uA 60000
77 #define BQ256XX_ITERM_MAX_uA 780000
78 #define BQ256XX_ITERM_DEF_uA 180000
79 #define BQ25618_ITERM_STEP_uA 20000
80 #define BQ25618_ITERM_OFFSET_uA 20000
81 #define BQ25618_ITERM_MIN_uA 20000
82 #define BQ25618_ITERM_MAX_uA 260000
83 #define BQ25618_ITERM_DEF_uA 60000
84
85 #define BQ256XX_IPRECHG_MASK GENMASK(7, 4)
86 #define BQ256XX_IPRECHG_STEP_uA 60000
87 #define BQ256XX_IPRECHG_OFFSET_uA 60000
88 #define BQ256XX_IPRECHG_MIN_uA 60000
89 #define BQ256XX_IPRECHG_MAX_uA 780000
90 #define BQ256XX_IPRECHG_DEF_uA 180000
91 #define BQ25618_IPRECHG_STEP_uA 20000
92 #define BQ25618_IPRECHG_OFFSET_uA 20000
93 #define BQ25618_IPRECHG_MIN_uA 20000
94 #define BQ25618_IPRECHG_MAX_uA 260000
95 #define BQ25618_IPRECHG_DEF_uA 40000
96 #define BQ256XX_IPRECHG_BIT_SHIFT 4
97
98 #define BQ256XX_ICHG_MASK GENMASK(5, 0)
99 #define BQ256XX_ICHG_STEP_uA 60000
100 #define BQ256XX_ICHG_MIN_uA 0
101 #define BQ256XX_ICHG_MAX_uA 3000000
102 #define BQ2560X_ICHG_DEF_uA 2040000
103 #define BQ25611D_ICHG_DEF_uA 1020000
104 #define BQ25618_ICHG_STEP_uA 20000
105 #define BQ25618_ICHG_MIN_uA 0
106 #define BQ25618_ICHG_MAX_uA 1500000
107 #define BQ25618_ICHG_DEF_uA 340000
108 #define BQ25618_ICHG_THRESH 0x3c
109 #define BQ25618_ICHG_THRESH_uA 1180000
110
111 #define BQ256XX_VBUS_STAT_MASK GENMASK(7, 5)
112 #define BQ256XX_VBUS_STAT_NO_INPUT 0
113 #define BQ256XX_VBUS_STAT_USB_SDP BIT(5)
114 #define BQ256XX_VBUS_STAT_USB_CDP BIT(6)
115 #define BQ256XX_VBUS_STAT_USB_DCP (BIT(6) | BIT(5))
116 #define BQ256XX_VBUS_STAT_USB_OTG (BIT(7) | BIT(6) | BIT(5))
117
118 #define BQ256XX_CHRG_STAT_MASK GENMASK(4, 3)
119 #define BQ256XX_CHRG_STAT_NOT_CHRGING 0
120 #define BQ256XX_CHRG_STAT_PRECHRGING BIT(3)
121 #define BQ256XX_CHRG_STAT_FAST_CHRGING BIT(4)
122 #define BQ256XX_CHRG_STAT_CHRG_TERM (BIT(4) | BIT(3))
123
124 #define BQ256XX_PG_STAT_MASK BIT(2)
125 #define BQ256XX_WDT_FAULT_MASK BIT(7)
126 #define BQ256XX_CHRG_FAULT_MASK GENMASK(5, 4)
127 #define BQ256XX_CHRG_FAULT_NORMAL 0
128 #define BQ256XX_CHRG_FAULT_INPUT BIT(4)
129 #define BQ256XX_CHRG_FAULT_THERM BIT(5)
130 #define BQ256XX_CHRG_FAULT_CST_EXPIRE (BIT(5) | BIT(4))
131 #define BQ256XX_BAT_FAULT_MASK BIT(3)
132 #define BQ256XX_NTC_FAULT_MASK GENMASK(2, 0)
133 #define BQ256XX_NTC_FAULT_WARM BIT(1)
134 #define BQ256XX_NTC_FAULT_COOL (BIT(1) | BIT(0))
135 #define BQ256XX_NTC_FAULT_COLD (BIT(2) | BIT(0))
136 #define BQ256XX_NTC_FAULT_HOT (BIT(2) | BIT(1))
137
138 #define BQ256XX_NUM_WD_VAL 4
139 #define BQ256XX_WATCHDOG_MASK GENMASK(5, 4)
140 #define BQ256XX_WATCHDOG_MAX 1600000
141 #define BQ256XX_WATCHDOG_DIS 0
142 #define BQ256XX_WDT_BIT_SHIFT 4
143
144 #define BQ256XX_REG_RST BIT(7)
145
146 /**
147 * struct bq256xx_init_data -
148 * @ichg: fast charge current
149 * @iindpm: input current limit
150 * @vbatreg: charge voltage
151 * @iterm: termination current
152 * @iprechg: precharge current
153 * @vindpm: input voltage limit
154 * @ichg_max: maximum fast charge current
155 * @vbatreg_max: maximum charge voltage
156 */
157 struct bq256xx_init_data {
158 u32 ichg;
159 u32 iindpm;
160 u32 vbatreg;
161 u32 iterm;
162 u32 iprechg;
163 u32 vindpm;
164 u32 ichg_max;
165 u32 vbatreg_max;
166 };
167
168 /**
169 * struct bq256xx_state -
170 * @vbus_stat: VBUS status according to BQ256XX_CHARGER_STATUS_0
171 * @chrg_stat: charging status according to BQ256XX_CHARGER_STATUS_0
172 * @online: PG status according to BQ256XX_CHARGER_STATUS_0
173 *
174 * @wdt_fault: watchdog fault according to BQ256XX_CHARGER_STATUS_1
175 * @bat_fault: battery fault according to BQ256XX_CHARGER_STATUS_1
176 * @chrg_fault: charging fault according to BQ256XX_CHARGER_STATUS_1
177 * @ntc_fault: TS fault according to BQ256XX_CHARGER_STATUS_1
178 */
179 struct bq256xx_state {
180 u8 vbus_stat;
181 u8 chrg_stat;
182 bool online;
183
184 u8 wdt_fault;
185 u8 bat_fault;
186 u8 chrg_fault;
187 u8 ntc_fault;
188 };
189
190 enum bq256xx_id {
191 BQ25600,
192 BQ25600D,
193 BQ25601,
194 BQ25601D,
195 BQ25618,
196 BQ25619,
197 BQ25611D,
198 };
199
200 /**
201 * struct bq256xx_device -
202 * @client: i2c client structure
203 * @regmap: register map structure
204 * @dev: device structure
205 * @charger: power supply registered for the charger
206 * @battery: power supply registered for the battery
207 * @lock: mutex lock structure
208 *
209 * @usb2_phy: usb_phy identifier
210 * @usb3_phy: usb_phy identifier
211 * @usb_nb: notifier block
212 * @usb_work: usb work queue
213 * @usb_event: usb_event code
214 *
215 * @model_name: i2c name string
216 *
217 * @init_data: initialization data
218 * @chip_info: device variant information
219 * @state: device status and faults
220 * @watchdog_timer: watchdog timer value in milliseconds
221 */
222 struct bq256xx_device {
223 struct i2c_client *client;
224 struct device *dev;
225 struct power_supply *charger;
226 struct power_supply *battery;
227 struct mutex lock;
228 struct regmap *regmap;
229
230 struct usb_phy *usb2_phy;
231 struct usb_phy *usb3_phy;
232 struct notifier_block usb_nb;
233 struct work_struct usb_work;
234 unsigned long usb_event;
235
236 char model_name[I2C_NAME_SIZE];
237
238 struct bq256xx_init_data init_data;
239 const struct bq256xx_chip_info *chip_info;
240 struct bq256xx_state state;
241 int watchdog_timer;
242 };
243
244 /**
245 * struct bq256xx_chip_info -
246 * @model_id: device instance
247 *
248 * @bq256xx_regmap_config: regmap configuration struct
249 * @bq256xx_get_ichg: pointer to instance specific get_ichg function
250 * @bq256xx_get_iindpm: pointer to instance specific get_iindpm function
251 * @bq256xx_get_vbatreg: pointer to instance specific get_vbatreg function
252 * @bq256xx_get_iterm: pointer to instance specific get_iterm function
253 * @bq256xx_get_iprechg: pointer to instance specific get_iprechg function
254 * @bq256xx_get_vindpm: pointer to instance specific get_vindpm function
255 *
256 * @bq256xx_set_ichg: pointer to instance specific set_ichg function
257 * @bq256xx_set_iindpm: pointer to instance specific set_iindpm function
258 * @bq256xx_set_vbatreg: pointer to instance specific set_vbatreg function
259 * @bq256xx_set_iterm: pointer to instance specific set_iterm function
260 * @bq256xx_set_iprechg: pointer to instance specific set_iprechg function
261 * @bq256xx_set_vindpm: pointer to instance specific set_vindpm function
262 *
263 * @bq256xx_def_ichg: default ichg value in microamps
264 * @bq256xx_def_iindpm: default iindpm value in microamps
265 * @bq256xx_def_vbatreg: default vbatreg value in microvolts
266 * @bq256xx_def_iterm: default iterm value in microamps
267 * @bq256xx_def_iprechg: default iprechg value in microamps
268 * @bq256xx_def_vindpm: default vindpm value in microvolts
269 *
270 * @bq256xx_max_ichg: maximum charge current in microamps
271 * @bq256xx_max_vbatreg: maximum battery regulation voltage in microvolts
272 *
273 * @has_usb_detect: indicates whether device has BC1.2 detection
274 */
275 struct bq256xx_chip_info {
276 int model_id;
277
278 const struct regmap_config *bq256xx_regmap_config;
279
280 int (*bq256xx_get_ichg)(struct bq256xx_device *bq);
281 int (*bq256xx_get_iindpm)(struct bq256xx_device *bq);
282 int (*bq256xx_get_vbatreg)(struct bq256xx_device *bq);
283 int (*bq256xx_get_iterm)(struct bq256xx_device *bq);
284 int (*bq256xx_get_iprechg)(struct bq256xx_device *bq);
285 int (*bq256xx_get_vindpm)(struct bq256xx_device *bq);
286
287 int (*bq256xx_set_ichg)(struct bq256xx_device *bq, int ichg);
288 int (*bq256xx_set_iindpm)(struct bq256xx_device *bq, int iindpm);
289 int (*bq256xx_set_vbatreg)(struct bq256xx_device *bq, int vbatreg);
290 int (*bq256xx_set_iterm)(struct bq256xx_device *bq, int iterm);
291 int (*bq256xx_set_iprechg)(struct bq256xx_device *bq, int iprechg);
292 int (*bq256xx_set_vindpm)(struct bq256xx_device *bq, int vindpm);
293
294 int bq256xx_def_ichg;
295 int bq256xx_def_iindpm;
296 int bq256xx_def_vbatreg;
297 int bq256xx_def_iterm;
298 int bq256xx_def_iprechg;
299 int bq256xx_def_vindpm;
300
301 int bq256xx_max_ichg;
302 int bq256xx_max_vbatreg;
303
304 bool has_usb_detect;
305 };
306
307 static int bq256xx_watchdog_time[BQ256XX_NUM_WD_VAL] = {
308 0, 40000, 80000, 1600000
309 };
310
311 static const int bq25611d_vbatreg_values[] = {
312 3494000, 3590000, 3686000, 3790000, 3894000, 3990000, 4090000, 4140000,
313 4190000
314 };
315
316 static const int bq25618_619_vbatreg_values[] = {
317 3504000, 3600000, 3696000, 3800000, 3904000, 4000000, 4100000, 4150000,
318 4200000
319 };
320
321 static const int bq25618_619_ichg_values[] = {
322 1290000, 1360000, 1430000, 1500000
323 };
324
325 static enum power_supply_usb_type bq256xx_usb_type[] = {
326 POWER_SUPPLY_USB_TYPE_SDP,
327 POWER_SUPPLY_USB_TYPE_CDP,
328 POWER_SUPPLY_USB_TYPE_DCP,
329 POWER_SUPPLY_USB_TYPE_UNKNOWN,
330 POWER_SUPPLY_USB_TYPE_ACA,
331 };
332
bq256xx_array_parse(int array_size,int val,const int array[])333 static int bq256xx_array_parse(int array_size, int val, const int array[])
334 {
335 int i = 0;
336
337 if (val < array[i])
338 return i - 1;
339
340 if (val >= array[array_size - 1])
341 return array_size - 1;
342
343 for (i = 1; i < array_size; i++) {
344 if (val == array[i])
345 return i;
346
347 if (val > array[i - 1] && val < array[i]) {
348 if (val < array[i])
349 return i - 1;
350 else
351 return i;
352 }
353 }
354 return -EINVAL;
355 }
356
bq256xx_usb_notifier(struct notifier_block * nb,unsigned long val,void * priv)357 static int bq256xx_usb_notifier(struct notifier_block *nb, unsigned long val,
358 void *priv)
359 {
360 struct bq256xx_device *bq =
361 container_of(nb, struct bq256xx_device, usb_nb);
362
363 bq->usb_event = val;
364 queue_work(system_power_efficient_wq, &bq->usb_work);
365
366 return NOTIFY_OK;
367 }
368
bq256xx_usb_work(struct work_struct * data)369 static void bq256xx_usb_work(struct work_struct *data)
370 {
371 struct bq256xx_device *bq =
372 container_of(data, struct bq256xx_device, usb_work);
373
374 switch (bq->usb_event) {
375 case USB_EVENT_ID:
376 break;
377 case USB_EVENT_NONE:
378 power_supply_changed(bq->charger);
379 break;
380 default:
381 dev_err(bq->dev, "Error switching to charger mode.\n");
382 break;
383 }
384 }
385
386 static struct reg_default bq2560x_reg_defs[] = {
387 {BQ256XX_INPUT_CURRENT_LIMIT, 0x17},
388 {BQ256XX_CHARGER_CONTROL_0, 0x1a},
389 {BQ256XX_CHARGE_CURRENT_LIMIT, 0xa2},
390 {BQ256XX_PRECHG_AND_TERM_CURR_LIM, 0x22},
391 {BQ256XX_BATTERY_VOLTAGE_LIMIT, 0x58},
392 {BQ256XX_CHARGER_CONTROL_1, 0x9f},
393 {BQ256XX_CHARGER_CONTROL_2, 0x66},
394 {BQ256XX_CHARGER_CONTROL_3, 0x4c},
395 };
396
397 static struct reg_default bq25611d_reg_defs[] = {
398 {BQ256XX_INPUT_CURRENT_LIMIT, 0x17},
399 {BQ256XX_CHARGER_CONTROL_0, 0x1a},
400 {BQ256XX_CHARGE_CURRENT_LIMIT, 0x91},
401 {BQ256XX_PRECHG_AND_TERM_CURR_LIM, 0x12},
402 {BQ256XX_BATTERY_VOLTAGE_LIMIT, 0x40},
403 {BQ256XX_CHARGER_CONTROL_1, 0x9e},
404 {BQ256XX_CHARGER_CONTROL_2, 0xe6},
405 {BQ256XX_CHARGER_CONTROL_3, 0x4c},
406 {BQ256XX_PART_INFORMATION, 0x54},
407 {BQ256XX_CHARGER_CONTROL_4, 0x75},
408 };
409
410 static struct reg_default bq25618_619_reg_defs[] = {
411 {BQ256XX_INPUT_CURRENT_LIMIT, 0x17},
412 {BQ256XX_CHARGER_CONTROL_0, 0x1a},
413 {BQ256XX_CHARGE_CURRENT_LIMIT, 0x91},
414 {BQ256XX_PRECHG_AND_TERM_CURR_LIM, 0x12},
415 {BQ256XX_BATTERY_VOLTAGE_LIMIT, 0x40},
416 {BQ256XX_CHARGER_CONTROL_1, 0x9e},
417 {BQ256XX_CHARGER_CONTROL_2, 0xe6},
418 {BQ256XX_CHARGER_CONTROL_3, 0x4c},
419 {BQ256XX_PART_INFORMATION, 0x2c},
420 {BQ256XX_CHARGER_CONTROL_4, 0x75},
421 };
422
bq256xx_get_state(struct bq256xx_device * bq,struct bq256xx_state * state)423 static int bq256xx_get_state(struct bq256xx_device *bq,
424 struct bq256xx_state *state)
425 {
426 unsigned int charger_status_0;
427 unsigned int charger_status_1;
428 int ret;
429
430 ret = regmap_read(bq->regmap, BQ256XX_CHARGER_STATUS_0,
431 &charger_status_0);
432 if (ret)
433 return ret;
434
435 ret = regmap_read(bq->regmap, BQ256XX_CHARGER_STATUS_1,
436 &charger_status_1);
437 if (ret)
438 return ret;
439
440 state->vbus_stat = charger_status_0 & BQ256XX_VBUS_STAT_MASK;
441 state->chrg_stat = charger_status_0 & BQ256XX_CHRG_STAT_MASK;
442 state->online = charger_status_0 & BQ256XX_PG_STAT_MASK;
443
444 state->wdt_fault = charger_status_1 & BQ256XX_WDT_FAULT_MASK;
445 state->bat_fault = charger_status_1 & BQ256XX_BAT_FAULT_MASK;
446 state->chrg_fault = charger_status_1 & BQ256XX_CHRG_FAULT_MASK;
447 state->ntc_fault = charger_status_1 & BQ256XX_NTC_FAULT_MASK;
448
449 return 0;
450 }
451
bq256xx_get_ichg_curr(struct bq256xx_device * bq)452 static int bq256xx_get_ichg_curr(struct bq256xx_device *bq)
453 {
454 unsigned int charge_current_limit;
455 unsigned int ichg_reg_code;
456 int ret;
457
458 ret = regmap_read(bq->regmap, BQ256XX_CHARGE_CURRENT_LIMIT,
459 &charge_current_limit);
460 if (ret)
461 return ret;
462
463 ichg_reg_code = charge_current_limit & BQ256XX_ICHG_MASK;
464
465 return ichg_reg_code * BQ256XX_ICHG_STEP_uA;
466 }
467
bq25618_619_get_ichg_curr(struct bq256xx_device * bq)468 static int bq25618_619_get_ichg_curr(struct bq256xx_device *bq)
469 {
470 unsigned int charge_current_limit;
471 unsigned int ichg_reg_code;
472 int ret;
473
474 ret = regmap_read(bq->regmap, BQ256XX_CHARGE_CURRENT_LIMIT,
475 &charge_current_limit);
476 if (ret)
477 return ret;
478
479 ichg_reg_code = charge_current_limit & BQ256XX_ICHG_MASK;
480
481 if (ichg_reg_code < BQ25618_ICHG_THRESH)
482 return ichg_reg_code * BQ25618_ICHG_STEP_uA;
483
484 return bq25618_619_ichg_values[ichg_reg_code - BQ25618_ICHG_THRESH];
485 }
486
bq256xx_set_ichg_curr(struct bq256xx_device * bq,int ichg)487 static int bq256xx_set_ichg_curr(struct bq256xx_device *bq, int ichg)
488 {
489 unsigned int ichg_reg_code;
490 int ichg_max = bq->init_data.ichg_max;
491
492 ichg = clamp(ichg, BQ256XX_ICHG_MIN_uA, ichg_max);
493 ichg_reg_code = ichg / BQ256XX_ICHG_STEP_uA;
494
495 return regmap_update_bits(bq->regmap, BQ256XX_CHARGE_CURRENT_LIMIT,
496 BQ256XX_ICHG_MASK, ichg_reg_code);
497 }
498
bq25618_619_set_ichg_curr(struct bq256xx_device * bq,int ichg)499 static int bq25618_619_set_ichg_curr(struct bq256xx_device *bq, int ichg)
500 {
501 int array_size = ARRAY_SIZE(bq25618_619_ichg_values);
502 unsigned int ichg_reg_code;
503 int ichg_max = bq->init_data.ichg_max;
504
505 ichg = clamp(ichg, BQ25618_ICHG_MIN_uA, ichg_max);
506
507 if (ichg <= BQ25618_ICHG_THRESH_uA) {
508 ichg_reg_code = ichg / BQ25618_ICHG_STEP_uA;
509 } else {
510 ichg_reg_code = bq256xx_array_parse(array_size, ichg,
511 bq25618_619_ichg_values) + BQ25618_ICHG_THRESH;
512 }
513
514 return regmap_update_bits(bq->regmap, BQ256XX_CHARGE_CURRENT_LIMIT,
515 BQ256XX_ICHG_MASK, ichg_reg_code);
516 }
517
bq25618_619_get_chrg_volt(struct bq256xx_device * bq)518 static int bq25618_619_get_chrg_volt(struct bq256xx_device *bq)
519 {
520 unsigned int battery_volt_lim;
521 unsigned int vbatreg_reg_code;
522 int ret;
523
524 ret = regmap_read(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
525 &battery_volt_lim);
526
527 if (ret)
528 return ret;
529
530 vbatreg_reg_code = (battery_volt_lim & BQ256XX_VBATREG_MASK) >>
531 BQ256XX_VBATREG_BIT_SHIFT;
532
533 if (vbatreg_reg_code > BQ2561X_VBATREG_THRESH)
534 return ((vbatreg_reg_code - BQ2561X_VBATREG_THRESH) *
535 BQ2561X_VBATREG_STEP_uV) +
536 BQ25618_VBATREG_THRESH_uV;
537
538 return bq25618_619_vbatreg_values[vbatreg_reg_code];
539 }
540
bq25611d_get_chrg_volt(struct bq256xx_device * bq)541 static int bq25611d_get_chrg_volt(struct bq256xx_device *bq)
542 {
543 unsigned int battery_volt_lim;
544 unsigned int vbatreg_reg_code;
545 int ret;
546
547 ret = regmap_read(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
548 &battery_volt_lim);
549 if (ret)
550 return ret;
551
552 vbatreg_reg_code = (battery_volt_lim & BQ256XX_VBATREG_MASK) >>
553 BQ256XX_VBATREG_BIT_SHIFT;
554
555 if (vbatreg_reg_code > BQ2561X_VBATREG_THRESH)
556 return ((vbatreg_reg_code - BQ2561X_VBATREG_THRESH) *
557 BQ2561X_VBATREG_STEP_uV) +
558 BQ25611D_VBATREG_THRESH_uV;
559
560 return bq25611d_vbatreg_values[vbatreg_reg_code];
561 }
562
bq2560x_get_chrg_volt(struct bq256xx_device * bq)563 static int bq2560x_get_chrg_volt(struct bq256xx_device *bq)
564 {
565 unsigned int battery_volt_lim;
566 unsigned int vbatreg_reg_code;
567 int ret;
568
569 ret = regmap_read(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
570 &battery_volt_lim);
571 if (ret)
572 return ret;
573
574 vbatreg_reg_code = (battery_volt_lim & BQ256XX_VBATREG_MASK) >>
575 BQ256XX_VBATREG_BIT_SHIFT;
576
577 return (vbatreg_reg_code * BQ2560X_VBATREG_STEP_uV)
578 + BQ2560X_VBATREG_OFFSET_uV;
579 }
580
bq25601d_get_chrg_volt(struct bq256xx_device * bq)581 static int bq25601d_get_chrg_volt(struct bq256xx_device *bq)
582 {
583 unsigned int battery_volt_lim;
584 unsigned int vbatreg_reg_code;
585 int ret;
586
587 ret = regmap_read(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
588 &battery_volt_lim);
589 if (ret)
590 return ret;
591
592 vbatreg_reg_code = (battery_volt_lim & BQ256XX_VBATREG_MASK) >>
593 BQ256XX_VBATREG_BIT_SHIFT;
594
595 return (vbatreg_reg_code * BQ2560X_VBATREG_STEP_uV)
596 + BQ25601D_VBATREG_OFFSET_uV;
597 }
598
bq25618_619_set_chrg_volt(struct bq256xx_device * bq,int vbatreg)599 static int bq25618_619_set_chrg_volt(struct bq256xx_device *bq, int vbatreg)
600 {
601 int array_size = ARRAY_SIZE(bq25618_619_vbatreg_values);
602 unsigned int vbatreg_reg_code;
603 int vbatreg_max = bq->init_data.vbatreg_max;
604
605 vbatreg = clamp(vbatreg, BQ25618_VBATREG_MIN_uV, vbatreg_max);
606
607 if (vbatreg > BQ25618_VBATREG_THRESH_uV)
608 vbatreg_reg_code = ((vbatreg -
609 BQ25618_VBATREG_THRESH_uV) /
610 (BQ2561X_VBATREG_STEP_uV)) + BQ2561X_VBATREG_THRESH;
611 else {
612 vbatreg_reg_code = bq256xx_array_parse(array_size, vbatreg,
613 bq25618_619_vbatreg_values);
614 }
615
616 return regmap_update_bits(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
617 BQ256XX_VBATREG_MASK, vbatreg_reg_code <<
618 BQ256XX_VBATREG_BIT_SHIFT);
619 }
620
bq25611d_set_chrg_volt(struct bq256xx_device * bq,int vbatreg)621 static int bq25611d_set_chrg_volt(struct bq256xx_device *bq, int vbatreg)
622 {
623 int array_size = ARRAY_SIZE(bq25611d_vbatreg_values);
624 unsigned int vbatreg_reg_code;
625 int vbatreg_max = bq->init_data.vbatreg_max;
626
627 vbatreg = clamp(vbatreg, BQ25611D_VBATREG_MIN_uV, vbatreg_max);
628
629 if (vbatreg > BQ25611D_VBATREG_THRESH_uV)
630 vbatreg_reg_code = ((vbatreg -
631 BQ25611D_VBATREG_THRESH_uV) /
632 (BQ2561X_VBATREG_STEP_uV)) + BQ2561X_VBATREG_THRESH;
633 else {
634 vbatreg_reg_code = bq256xx_array_parse(array_size, vbatreg,
635 bq25611d_vbatreg_values);
636 }
637
638 return regmap_update_bits(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
639 BQ256XX_VBATREG_MASK, vbatreg_reg_code <<
640 BQ256XX_VBATREG_BIT_SHIFT);
641 }
642
bq2560x_set_chrg_volt(struct bq256xx_device * bq,int vbatreg)643 static int bq2560x_set_chrg_volt(struct bq256xx_device *bq, int vbatreg)
644 {
645 unsigned int vbatreg_reg_code;
646 int vbatreg_max = bq->init_data.vbatreg_max;
647
648 vbatreg = clamp(vbatreg, BQ2560X_VBATREG_MIN_uV, vbatreg_max);
649
650 vbatreg_reg_code = (vbatreg - BQ2560X_VBATREG_OFFSET_uV) /
651 BQ2560X_VBATREG_STEP_uV;
652
653 return regmap_update_bits(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
654 BQ256XX_VBATREG_MASK, vbatreg_reg_code <<
655 BQ256XX_VBATREG_BIT_SHIFT);
656 }
657
bq25601d_set_chrg_volt(struct bq256xx_device * bq,int vbatreg)658 static int bq25601d_set_chrg_volt(struct bq256xx_device *bq, int vbatreg)
659 {
660 unsigned int vbatreg_reg_code;
661 int vbatreg_max = bq->init_data.vbatreg_max;
662
663 vbatreg = clamp(vbatreg, BQ25601D_VBATREG_MIN_uV, vbatreg_max);
664
665 vbatreg_reg_code = (vbatreg - BQ25601D_VBATREG_OFFSET_uV) /
666 BQ2560X_VBATREG_STEP_uV;
667
668 return regmap_update_bits(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
669 BQ256XX_VBATREG_MASK, vbatreg_reg_code <<
670 BQ256XX_VBATREG_BIT_SHIFT);
671 }
672
bq256xx_get_prechrg_curr(struct bq256xx_device * bq)673 static int bq256xx_get_prechrg_curr(struct bq256xx_device *bq)
674 {
675 unsigned int prechg_and_term_curr_lim;
676 unsigned int iprechg_reg_code;
677 int ret;
678
679 ret = regmap_read(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
680 &prechg_and_term_curr_lim);
681 if (ret)
682 return ret;
683
684 iprechg_reg_code = (prechg_and_term_curr_lim & BQ256XX_IPRECHG_MASK)
685 >> BQ256XX_IPRECHG_BIT_SHIFT;
686
687 return (iprechg_reg_code * BQ256XX_IPRECHG_STEP_uA) +
688 BQ256XX_IPRECHG_OFFSET_uA;
689 }
690
bq256xx_set_prechrg_curr(struct bq256xx_device * bq,int iprechg)691 static int bq256xx_set_prechrg_curr(struct bq256xx_device *bq, int iprechg)
692 {
693 unsigned int iprechg_reg_code;
694
695 iprechg = clamp(iprechg, BQ256XX_IPRECHG_MIN_uA,
696 BQ256XX_IPRECHG_MAX_uA);
697
698 iprechg_reg_code = ((iprechg - BQ256XX_IPRECHG_OFFSET_uA) /
699 BQ256XX_IPRECHG_STEP_uA) << BQ256XX_IPRECHG_BIT_SHIFT;
700
701 return regmap_update_bits(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
702 BQ256XX_IPRECHG_MASK, iprechg_reg_code);
703 }
704
bq25618_619_get_prechrg_curr(struct bq256xx_device * bq)705 static int bq25618_619_get_prechrg_curr(struct bq256xx_device *bq)
706 {
707 unsigned int prechg_and_term_curr_lim;
708 unsigned int iprechg_reg_code;
709 int ret;
710
711 ret = regmap_read(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
712 &prechg_and_term_curr_lim);
713 if (ret)
714 return ret;
715
716 iprechg_reg_code = (prechg_and_term_curr_lim & BQ256XX_IPRECHG_MASK)
717 >> BQ256XX_IPRECHG_BIT_SHIFT;
718
719 return (iprechg_reg_code * BQ25618_IPRECHG_STEP_uA) +
720 BQ25618_IPRECHG_OFFSET_uA;
721 }
722
bq25618_619_set_prechrg_curr(struct bq256xx_device * bq,int iprechg)723 static int bq25618_619_set_prechrg_curr(struct bq256xx_device *bq, int iprechg)
724 {
725 unsigned int iprechg_reg_code;
726
727 iprechg = clamp(iprechg, BQ25618_IPRECHG_MIN_uA,
728 BQ25618_IPRECHG_MAX_uA);
729
730 iprechg_reg_code = ((iprechg - BQ25618_IPRECHG_OFFSET_uA) /
731 BQ25618_IPRECHG_STEP_uA) << BQ256XX_IPRECHG_BIT_SHIFT;
732
733 return regmap_update_bits(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
734 BQ256XX_IPRECHG_MASK, iprechg_reg_code);
735 }
736
bq256xx_get_term_curr(struct bq256xx_device * bq)737 static int bq256xx_get_term_curr(struct bq256xx_device *bq)
738 {
739 unsigned int prechg_and_term_curr_lim;
740 unsigned int iterm_reg_code;
741 int ret;
742
743 ret = regmap_read(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
744 &prechg_and_term_curr_lim);
745 if (ret)
746 return ret;
747
748 iterm_reg_code = prechg_and_term_curr_lim & BQ256XX_ITERM_MASK;
749
750 return (iterm_reg_code * BQ256XX_ITERM_STEP_uA) +
751 BQ256XX_ITERM_OFFSET_uA;
752 }
753
bq256xx_set_term_curr(struct bq256xx_device * bq,int iterm)754 static int bq256xx_set_term_curr(struct bq256xx_device *bq, int iterm)
755 {
756 unsigned int iterm_reg_code;
757
758 iterm = clamp(iterm, BQ256XX_ITERM_MIN_uA, BQ256XX_ITERM_MAX_uA);
759
760 iterm_reg_code = (iterm - BQ256XX_ITERM_OFFSET_uA) /
761 BQ256XX_ITERM_STEP_uA;
762
763 return regmap_update_bits(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
764 BQ256XX_ITERM_MASK, iterm_reg_code);
765 }
766
bq25618_619_get_term_curr(struct bq256xx_device * bq)767 static int bq25618_619_get_term_curr(struct bq256xx_device *bq)
768 {
769 unsigned int prechg_and_term_curr_lim;
770 unsigned int iterm_reg_code;
771 int ret;
772
773 ret = regmap_read(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
774 &prechg_and_term_curr_lim);
775 if (ret)
776 return ret;
777
778 iterm_reg_code = prechg_and_term_curr_lim & BQ256XX_ITERM_MASK;
779
780 return (iterm_reg_code * BQ25618_ITERM_STEP_uA) +
781 BQ25618_ITERM_OFFSET_uA;
782 }
783
bq25618_619_set_term_curr(struct bq256xx_device * bq,int iterm)784 static int bq25618_619_set_term_curr(struct bq256xx_device *bq, int iterm)
785 {
786 unsigned int iterm_reg_code;
787
788 iterm = clamp(iterm, BQ25618_ITERM_MIN_uA, BQ25618_ITERM_MAX_uA);
789
790 iterm_reg_code = (iterm - BQ25618_ITERM_OFFSET_uA) /
791 BQ25618_ITERM_STEP_uA;
792
793 return regmap_update_bits(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
794 BQ256XX_ITERM_MASK, iterm_reg_code);
795 }
796
bq256xx_get_input_volt_lim(struct bq256xx_device * bq)797 static int bq256xx_get_input_volt_lim(struct bq256xx_device *bq)
798 {
799 unsigned int charger_control_2;
800 unsigned int vindpm_reg_code;
801 int ret;
802
803 ret = regmap_read(bq->regmap, BQ256XX_CHARGER_CONTROL_2,
804 &charger_control_2);
805 if (ret)
806 return ret;
807
808 vindpm_reg_code = charger_control_2 & BQ256XX_VINDPM_MASK;
809
810 return (vindpm_reg_code * BQ256XX_VINDPM_STEP_uV) +
811 BQ256XX_VINDPM_OFFSET_uV;
812 }
813
bq256xx_set_input_volt_lim(struct bq256xx_device * bq,int vindpm)814 static int bq256xx_set_input_volt_lim(struct bq256xx_device *bq, int vindpm)
815 {
816 unsigned int vindpm_reg_code;
817
818 vindpm = clamp(vindpm, BQ256XX_VINDPM_MIN_uV, BQ256XX_VINDPM_MAX_uV);
819
820 vindpm_reg_code = (vindpm - BQ256XX_VINDPM_OFFSET_uV) /
821 BQ256XX_VINDPM_STEP_uV;
822
823 return regmap_update_bits(bq->regmap, BQ256XX_CHARGER_CONTROL_2,
824 BQ256XX_VINDPM_MASK, vindpm_reg_code);
825 }
826
bq256xx_get_input_curr_lim(struct bq256xx_device * bq)827 static int bq256xx_get_input_curr_lim(struct bq256xx_device *bq)
828 {
829 unsigned int input_current_limit;
830 unsigned int iindpm_reg_code;
831 int ret;
832
833 ret = regmap_read(bq->regmap, BQ256XX_INPUT_CURRENT_LIMIT,
834 &input_current_limit);
835 if (ret)
836 return ret;
837
838 iindpm_reg_code = input_current_limit & BQ256XX_IINDPM_MASK;
839
840 return (iindpm_reg_code * BQ256XX_IINDPM_STEP_uA) +
841 BQ256XX_IINDPM_OFFSET_uA;
842 }
843
bq256xx_set_input_curr_lim(struct bq256xx_device * bq,int iindpm)844 static int bq256xx_set_input_curr_lim(struct bq256xx_device *bq, int iindpm)
845 {
846 unsigned int iindpm_reg_code;
847
848 iindpm = clamp(iindpm, BQ256XX_IINDPM_MIN_uA, BQ256XX_IINDPM_MAX_uA);
849
850 iindpm_reg_code = (iindpm - BQ256XX_IINDPM_OFFSET_uA) /
851 BQ256XX_IINDPM_STEP_uA;
852
853 return regmap_update_bits(bq->regmap, BQ256XX_INPUT_CURRENT_LIMIT,
854 BQ256XX_IINDPM_MASK, iindpm_reg_code);
855 }
856
bq256xx_charger_reset(void * data)857 static void bq256xx_charger_reset(void *data)
858 {
859 struct bq256xx_device *bq = data;
860
861 regmap_update_bits(bq->regmap, BQ256XX_PART_INFORMATION,
862 BQ256XX_REG_RST, BQ256XX_REG_RST);
863
864 if (!IS_ERR_OR_NULL(bq->usb2_phy))
865 usb_unregister_notifier(bq->usb2_phy, &bq->usb_nb);
866
867 if (!IS_ERR_OR_NULL(bq->usb3_phy))
868 usb_unregister_notifier(bq->usb3_phy, &bq->usb_nb);
869 }
870
bq256xx_set_charger_property(struct power_supply * psy,enum power_supply_property prop,const union power_supply_propval * val)871 static int bq256xx_set_charger_property(struct power_supply *psy,
872 enum power_supply_property prop,
873 const union power_supply_propval *val)
874 {
875 struct bq256xx_device *bq = power_supply_get_drvdata(psy);
876 int ret = -EINVAL;
877
878 switch (prop) {
879 case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
880 ret = bq->chip_info->bq256xx_set_iindpm(bq, val->intval);
881 if (ret)
882 return ret;
883 break;
884
885 case POWER_SUPPLY_PROP_STATUS:
886 break;
887
888 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
889 ret = bq->chip_info->bq256xx_set_vbatreg(bq, val->intval);
890 if (ret)
891 return ret;
892 break;
893
894 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
895 ret = bq->chip_info->bq256xx_set_ichg(bq, val->intval);
896 if (ret)
897 return ret;
898 break;
899
900 case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
901 ret = bq->chip_info->bq256xx_set_iprechg(bq, val->intval);
902 if (ret)
903 return ret;
904 break;
905
906 case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
907 ret = bq->chip_info->bq256xx_set_iterm(bq, val->intval);
908 if (ret)
909 return ret;
910 break;
911
912 case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
913 ret = bq->chip_info->bq256xx_set_vindpm(bq, val->intval);
914 if (ret)
915 return ret;
916 break;
917
918 default:
919 break;
920 }
921
922 return ret;
923 }
924
925
bq256xx_get_battery_property(struct power_supply * psy,enum power_supply_property psp,union power_supply_propval * val)926 static int bq256xx_get_battery_property(struct power_supply *psy,
927 enum power_supply_property psp,
928 union power_supply_propval *val)
929 {
930 struct bq256xx_device *bq = power_supply_get_drvdata(psy);
931
932 switch (psp) {
933 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
934 val->intval = bq->init_data.ichg_max;
935 break;
936
937 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
938 val->intval = bq->init_data.vbatreg_max;
939 break;
940
941 default:
942 return -EINVAL;
943 }
944
945 return 0;
946 }
947
bq256xx_get_charger_property(struct power_supply * psy,enum power_supply_property psp,union power_supply_propval * val)948 static int bq256xx_get_charger_property(struct power_supply *psy,
949 enum power_supply_property psp,
950 union power_supply_propval *val)
951 {
952 struct bq256xx_device *bq = power_supply_get_drvdata(psy);
953 struct bq256xx_state state;
954 int ret = 0;
955
956 mutex_lock(&bq->lock);
957 ret = bq256xx_get_state(bq, &state);
958 mutex_unlock(&bq->lock);
959 if (ret)
960 return ret;
961
962 switch (psp) {
963 case POWER_SUPPLY_PROP_STATUS:
964 if (state.vbus_stat == BQ256XX_VBUS_STAT_NO_INPUT ||
965 state.vbus_stat == BQ256XX_VBUS_STAT_USB_OTG)
966 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
967 else if (state.chrg_stat == BQ256XX_CHRG_STAT_NOT_CHRGING)
968 val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
969 else if (state.chrg_stat == BQ256XX_CHRG_STAT_CHRG_TERM)
970 val->intval = POWER_SUPPLY_STATUS_FULL;
971 else
972 val->intval = POWER_SUPPLY_STATUS_CHARGING;
973 break;
974
975 case POWER_SUPPLY_PROP_HEALTH:
976 val->intval = POWER_SUPPLY_HEALTH_UNKNOWN;
977 if (state.wdt_fault) {
978 val->intval =
979 POWER_SUPPLY_HEALTH_WATCHDOG_TIMER_EXPIRE;
980 } else if (state.bat_fault) {
981 val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
982 } else {
983 switch (state.chrg_stat) {
984 case BQ256XX_CHRG_FAULT_INPUT:
985 val->intval =
986 POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
987 break;
988 case BQ256XX_CHRG_FAULT_THERM:
989 val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
990 break;
991 case BQ256XX_CHRG_FAULT_CST_EXPIRE:
992 val->intval =
993 POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE;
994 break;
995 default:
996 break;
997 }
998
999 switch (state.ntc_fault) {
1000 case BQ256XX_NTC_FAULT_WARM:
1001 val->intval = POWER_SUPPLY_HEALTH_WARM;
1002 break;
1003 case BQ256XX_NTC_FAULT_COOL:
1004 val->intval = POWER_SUPPLY_HEALTH_COOL;
1005 break;
1006 case BQ256XX_NTC_FAULT_COLD:
1007 val->intval = POWER_SUPPLY_HEALTH_COLD;
1008 break;
1009 case BQ256XX_NTC_FAULT_HOT:
1010 val->intval = POWER_SUPPLY_HEALTH_HOT;
1011 break;
1012 default:
1013 val->intval = POWER_SUPPLY_HEALTH_GOOD;
1014 break;
1015 }
1016 }
1017 break;
1018
1019 case POWER_SUPPLY_PROP_USB_TYPE:
1020 if (bq->chip_info->has_usb_detect) {
1021 switch (state.vbus_stat) {
1022 case BQ256XX_VBUS_STAT_USB_SDP:
1023 val->intval = POWER_SUPPLY_USB_TYPE_SDP;
1024 break;
1025 case BQ256XX_VBUS_STAT_USB_CDP:
1026 val->intval = POWER_SUPPLY_USB_TYPE_CDP;
1027 break;
1028 case BQ256XX_VBUS_STAT_USB_DCP:
1029 val->intval = POWER_SUPPLY_USB_TYPE_DCP;
1030 break;
1031 case BQ256XX_VBUS_STAT_USB_OTG:
1032 val->intval = POWER_SUPPLY_USB_TYPE_ACA;
1033 break;
1034 default:
1035 val->intval = POWER_SUPPLY_USB_TYPE_UNKNOWN;
1036 break;
1037 }
1038 } else {
1039 switch (state.vbus_stat) {
1040 case BQ256XX_VBUS_STAT_USB_SDP:
1041 val->intval = POWER_SUPPLY_USB_TYPE_SDP;
1042 break;
1043 case BQ256XX_VBUS_STAT_USB_OTG:
1044 val->intval = POWER_SUPPLY_USB_TYPE_ACA;
1045 break;
1046 default:
1047 val->intval = POWER_SUPPLY_USB_TYPE_UNKNOWN;
1048 break;
1049 }
1050 }
1051 break;
1052
1053 case POWER_SUPPLY_PROP_CHARGE_TYPE:
1054 switch (state.chrg_stat) {
1055 case BQ256XX_CHRG_STAT_NOT_CHRGING:
1056 val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;
1057 break;
1058 case BQ256XX_CHRG_STAT_PRECHRGING:
1059 val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
1060 break;
1061 case BQ256XX_CHRG_STAT_FAST_CHRGING:
1062 val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
1063 break;
1064 case BQ256XX_CHRG_STAT_CHRG_TERM:
1065 val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
1066 break;
1067 default:
1068 val->intval = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
1069 }
1070 break;
1071
1072 case POWER_SUPPLY_PROP_MANUFACTURER:
1073 val->strval = BQ256XX_MANUFACTURER;
1074 break;
1075
1076 case POWER_SUPPLY_PROP_MODEL_NAME:
1077 val->strval = bq->model_name;
1078 break;
1079
1080 case POWER_SUPPLY_PROP_ONLINE:
1081 val->intval = state.online;
1082 break;
1083
1084 case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
1085 ret = bq->chip_info->bq256xx_get_vindpm(bq);
1086 if (ret < 0)
1087 return ret;
1088 val->intval = ret;
1089 break;
1090
1091 case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
1092 ret = bq->chip_info->bq256xx_get_iindpm(bq);
1093 if (ret < 0)
1094 return ret;
1095 val->intval = ret;
1096 break;
1097
1098 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
1099 ret = bq->chip_info->bq256xx_get_vbatreg(bq);
1100 if (ret < 0)
1101 return ret;
1102 val->intval = ret;
1103 break;
1104
1105 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
1106 ret = bq->chip_info->bq256xx_get_ichg(bq);
1107 if (ret < 0)
1108 return ret;
1109 val->intval = ret;
1110 break;
1111
1112 case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
1113 ret = bq->chip_info->bq256xx_get_iprechg(bq);
1114 if (ret < 0)
1115 return ret;
1116 val->intval = ret;
1117 break;
1118
1119 case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
1120 ret = bq->chip_info->bq256xx_get_iterm(bq);
1121 if (ret < 0)
1122 return ret;
1123 val->intval = ret;
1124 break;
1125
1126 default:
1127 return -EINVAL;
1128 }
1129
1130 return ret;
1131 }
1132
bq256xx_state_changed(struct bq256xx_device * bq,struct bq256xx_state * new_state)1133 static bool bq256xx_state_changed(struct bq256xx_device *bq,
1134 struct bq256xx_state *new_state)
1135 {
1136 struct bq256xx_state old_state;
1137
1138 mutex_lock(&bq->lock);
1139 old_state = bq->state;
1140 mutex_unlock(&bq->lock);
1141
1142 return memcmp(&old_state, new_state, sizeof(struct bq256xx_state)) != 0;
1143 }
1144
bq256xx_irq_handler_thread(int irq,void * private)1145 static irqreturn_t bq256xx_irq_handler_thread(int irq, void *private)
1146 {
1147 struct bq256xx_device *bq = private;
1148 struct bq256xx_state state;
1149 int ret;
1150
1151 ret = bq256xx_get_state(bq, &state);
1152 if (ret < 0)
1153 goto irq_out;
1154
1155 if (!bq256xx_state_changed(bq, &state))
1156 goto irq_out;
1157
1158 mutex_lock(&bq->lock);
1159 bq->state = state;
1160 mutex_unlock(&bq->lock);
1161
1162 power_supply_changed(bq->charger);
1163
1164 irq_out:
1165 return IRQ_HANDLED;
1166 }
1167
1168 static enum power_supply_property bq256xx_power_supply_props[] = {
1169 POWER_SUPPLY_PROP_MANUFACTURER,
1170 POWER_SUPPLY_PROP_MODEL_NAME,
1171 POWER_SUPPLY_PROP_STATUS,
1172 POWER_SUPPLY_PROP_ONLINE,
1173 POWER_SUPPLY_PROP_HEALTH,
1174 POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT,
1175 POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
1176 POWER_SUPPLY_PROP_CHARGE_TYPE,
1177 POWER_SUPPLY_PROP_USB_TYPE,
1178 POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
1179 POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
1180 POWER_SUPPLY_PROP_PRECHARGE_CURRENT,
1181 POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT,
1182 };
1183
1184 static enum power_supply_property bq256xx_battery_props[] = {
1185 POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
1186 POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
1187 };
1188
bq256xx_property_is_writeable(struct power_supply * psy,enum power_supply_property prop)1189 static int bq256xx_property_is_writeable(struct power_supply *psy,
1190 enum power_supply_property prop)
1191 {
1192 switch (prop) {
1193 case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
1194 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
1195 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
1196 case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
1197 case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
1198 case POWER_SUPPLY_PROP_STATUS:
1199 case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
1200 return true;
1201 default:
1202 return false;
1203 }
1204 }
1205
1206 static const struct power_supply_desc bq256xx_power_supply_desc = {
1207 .name = "bq256xx-charger",
1208 .type = POWER_SUPPLY_TYPE_USB,
1209 .usb_types = bq256xx_usb_type,
1210 .num_usb_types = ARRAY_SIZE(bq256xx_usb_type),
1211 .properties = bq256xx_power_supply_props,
1212 .num_properties = ARRAY_SIZE(bq256xx_power_supply_props),
1213 .get_property = bq256xx_get_charger_property,
1214 .set_property = bq256xx_set_charger_property,
1215 .property_is_writeable = bq256xx_property_is_writeable,
1216 };
1217
1218 static struct power_supply_desc bq256xx_battery_desc = {
1219 .name = "bq256xx-battery",
1220 .type = POWER_SUPPLY_TYPE_BATTERY,
1221 .get_property = bq256xx_get_battery_property,
1222 .properties = bq256xx_battery_props,
1223 .num_properties = ARRAY_SIZE(bq256xx_battery_props),
1224 .property_is_writeable = bq256xx_property_is_writeable,
1225 };
1226
1227
bq256xx_is_volatile_reg(struct device * dev,unsigned int reg)1228 static bool bq256xx_is_volatile_reg(struct device *dev, unsigned int reg)
1229 {
1230 switch (reg) {
1231 case BQ256XX_INPUT_CURRENT_LIMIT:
1232 case BQ256XX_CHARGER_STATUS_0...BQ256XX_CHARGER_STATUS_2:
1233 return true;
1234 default:
1235 return false;
1236 }
1237 }
1238
1239 static const struct regmap_config bq25600_regmap_config = {
1240 .reg_bits = 8,
1241 .val_bits = 8,
1242
1243 .max_register = BQ256XX_PART_INFORMATION,
1244 .reg_defaults = bq2560x_reg_defs,
1245 .num_reg_defaults = ARRAY_SIZE(bq2560x_reg_defs),
1246 .cache_type = REGCACHE_FLAT,
1247 .volatile_reg = bq256xx_is_volatile_reg,
1248 };
1249
1250 static const struct regmap_config bq25611d_regmap_config = {
1251 .reg_bits = 8,
1252 .val_bits = 8,
1253
1254 .max_register = BQ256XX_CHARGER_CONTROL_4,
1255 .reg_defaults = bq25611d_reg_defs,
1256 .num_reg_defaults = ARRAY_SIZE(bq25611d_reg_defs),
1257 .cache_type = REGCACHE_FLAT,
1258 .volatile_reg = bq256xx_is_volatile_reg,
1259 };
1260
1261 static const struct regmap_config bq25618_619_regmap_config = {
1262 .reg_bits = 8,
1263 .val_bits = 8,
1264
1265 .max_register = BQ256XX_CHARGER_CONTROL_4,
1266 .reg_defaults = bq25618_619_reg_defs,
1267 .num_reg_defaults = ARRAY_SIZE(bq25618_619_reg_defs),
1268 .cache_type = REGCACHE_FLAT,
1269 .volatile_reg = bq256xx_is_volatile_reg,
1270 };
1271
1272 static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = {
1273 [BQ25600] = {
1274 .model_id = BQ25600,
1275 .bq256xx_regmap_config = &bq25600_regmap_config,
1276 .bq256xx_get_ichg = bq256xx_get_ichg_curr,
1277 .bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
1278 .bq256xx_get_vbatreg = bq2560x_get_chrg_volt,
1279 .bq256xx_get_iterm = bq256xx_get_term_curr,
1280 .bq256xx_get_iprechg = bq256xx_get_prechrg_curr,
1281 .bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
1282
1283 .bq256xx_set_ichg = bq256xx_set_ichg_curr,
1284 .bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
1285 .bq256xx_set_vbatreg = bq2560x_set_chrg_volt,
1286 .bq256xx_set_iterm = bq256xx_set_term_curr,
1287 .bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
1288 .bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
1289
1290 .bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA,
1291 .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
1292 .bq256xx_def_vbatreg = BQ2560X_VBATREG_DEF_uV,
1293 .bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA,
1294 .bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA,
1295 .bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
1296
1297 .bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA,
1298 .bq256xx_max_vbatreg = BQ2560X_VBATREG_MAX_uV,
1299
1300 .has_usb_detect = false,
1301 },
1302
1303 [BQ25600D] = {
1304 .model_id = BQ25600D,
1305 .bq256xx_regmap_config = &bq25600_regmap_config,
1306 .bq256xx_get_ichg = bq256xx_get_ichg_curr,
1307 .bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
1308 .bq256xx_get_vbatreg = bq2560x_get_chrg_volt,
1309 .bq256xx_get_iterm = bq256xx_get_term_curr,
1310 .bq256xx_get_iprechg = bq256xx_get_prechrg_curr,
1311 .bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
1312
1313 .bq256xx_set_ichg = bq256xx_set_ichg_curr,
1314 .bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
1315 .bq256xx_set_vbatreg = bq2560x_set_chrg_volt,
1316 .bq256xx_set_iterm = bq256xx_set_term_curr,
1317 .bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
1318 .bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
1319
1320 .bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA,
1321 .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
1322 .bq256xx_def_vbatreg = BQ2560X_VBATREG_DEF_uV,
1323 .bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA,
1324 .bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA,
1325 .bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
1326
1327 .bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA,
1328 .bq256xx_max_vbatreg = BQ2560X_VBATREG_MAX_uV,
1329
1330 .has_usb_detect = true,
1331 },
1332
1333 [BQ25601] = {
1334 .model_id = BQ25601,
1335 .bq256xx_regmap_config = &bq25600_regmap_config,
1336 .bq256xx_get_ichg = bq256xx_get_ichg_curr,
1337 .bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
1338 .bq256xx_get_vbatreg = bq2560x_get_chrg_volt,
1339 .bq256xx_get_iterm = bq256xx_get_term_curr,
1340 .bq256xx_get_iprechg = bq256xx_get_prechrg_curr,
1341 .bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
1342
1343 .bq256xx_set_ichg = bq256xx_set_ichg_curr,
1344 .bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
1345 .bq256xx_set_vbatreg = bq2560x_set_chrg_volt,
1346 .bq256xx_set_iterm = bq256xx_set_term_curr,
1347 .bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
1348 .bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
1349
1350 .bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA,
1351 .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
1352 .bq256xx_def_vbatreg = BQ2560X_VBATREG_DEF_uV,
1353 .bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA,
1354 .bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA,
1355 .bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
1356
1357 .bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA,
1358 .bq256xx_max_vbatreg = BQ2560X_VBATREG_MAX_uV,
1359
1360 .has_usb_detect = false,
1361 },
1362
1363 [BQ25601D] = {
1364 .model_id = BQ25601D,
1365 .bq256xx_regmap_config = &bq25600_regmap_config,
1366 .bq256xx_get_ichg = bq256xx_get_ichg_curr,
1367 .bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
1368 .bq256xx_get_vbatreg = bq25601d_get_chrg_volt,
1369 .bq256xx_get_iterm = bq256xx_get_term_curr,
1370 .bq256xx_get_iprechg = bq256xx_get_prechrg_curr,
1371 .bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
1372
1373 .bq256xx_set_ichg = bq256xx_set_ichg_curr,
1374 .bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
1375 .bq256xx_set_vbatreg = bq25601d_set_chrg_volt,
1376 .bq256xx_set_iterm = bq256xx_set_term_curr,
1377 .bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
1378 .bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
1379
1380 .bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA,
1381 .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
1382 .bq256xx_def_vbatreg = BQ2560X_VBATREG_DEF_uV,
1383 .bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA,
1384 .bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA,
1385 .bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
1386
1387 .bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA,
1388 .bq256xx_max_vbatreg = BQ2560X_VBATREG_MAX_uV,
1389
1390 .has_usb_detect = true,
1391 },
1392
1393 [BQ25611D] = {
1394 .model_id = BQ25611D,
1395 .bq256xx_regmap_config = &bq25611d_regmap_config,
1396 .bq256xx_get_ichg = bq256xx_get_ichg_curr,
1397 .bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
1398 .bq256xx_get_vbatreg = bq25611d_get_chrg_volt,
1399 .bq256xx_get_iterm = bq256xx_get_term_curr,
1400 .bq256xx_get_iprechg = bq256xx_get_prechrg_curr,
1401 .bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
1402
1403 .bq256xx_set_ichg = bq256xx_set_ichg_curr,
1404 .bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
1405 .bq256xx_set_vbatreg = bq25611d_set_chrg_volt,
1406 .bq256xx_set_iterm = bq256xx_set_term_curr,
1407 .bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
1408 .bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
1409
1410 .bq256xx_def_ichg = BQ25611D_ICHG_DEF_uA,
1411 .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
1412 .bq256xx_def_vbatreg = BQ25611D_VBATREG_DEF_uV,
1413 .bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA,
1414 .bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA,
1415 .bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
1416
1417 .bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA,
1418 .bq256xx_max_vbatreg = BQ25611D_VBATREG_MAX_uV,
1419
1420 .has_usb_detect = true,
1421 },
1422
1423 [BQ25618] = {
1424 .model_id = BQ25618,
1425 .bq256xx_regmap_config = &bq25618_619_regmap_config,
1426 .bq256xx_get_ichg = bq25618_619_get_ichg_curr,
1427 .bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
1428 .bq256xx_get_vbatreg = bq25618_619_get_chrg_volt,
1429 .bq256xx_get_iterm = bq25618_619_get_term_curr,
1430 .bq256xx_get_iprechg = bq25618_619_get_prechrg_curr,
1431 .bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
1432
1433 .bq256xx_set_ichg = bq25618_619_set_ichg_curr,
1434 .bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
1435 .bq256xx_set_vbatreg = bq25618_619_set_chrg_volt,
1436 .bq256xx_set_iterm = bq25618_619_set_term_curr,
1437 .bq256xx_set_iprechg = bq25618_619_set_prechrg_curr,
1438 .bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
1439
1440 .bq256xx_def_ichg = BQ25618_ICHG_DEF_uA,
1441 .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
1442 .bq256xx_def_vbatreg = BQ25618_VBATREG_DEF_uV,
1443 .bq256xx_def_iterm = BQ25618_ITERM_DEF_uA,
1444 .bq256xx_def_iprechg = BQ25618_IPRECHG_DEF_uA,
1445 .bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
1446
1447 .bq256xx_max_ichg = BQ25618_ICHG_MAX_uA,
1448 .bq256xx_max_vbatreg = BQ25618_VBATREG_MAX_uV,
1449
1450 .has_usb_detect = false,
1451 },
1452
1453 [BQ25619] = {
1454 .model_id = BQ25619,
1455 .bq256xx_regmap_config = &bq25618_619_regmap_config,
1456 .bq256xx_get_ichg = bq25618_619_get_ichg_curr,
1457 .bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
1458 .bq256xx_get_vbatreg = bq25618_619_get_chrg_volt,
1459 .bq256xx_get_iterm = bq25618_619_get_term_curr,
1460 .bq256xx_get_iprechg = bq25618_619_get_prechrg_curr,
1461 .bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
1462
1463 .bq256xx_set_ichg = bq25618_619_set_ichg_curr,
1464 .bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
1465 .bq256xx_set_vbatreg = bq25618_619_set_chrg_volt,
1466 .bq256xx_set_iterm = bq25618_619_set_term_curr,
1467 .bq256xx_set_iprechg = bq25618_619_set_prechrg_curr,
1468 .bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
1469
1470 .bq256xx_def_ichg = BQ25618_ICHG_DEF_uA,
1471 .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
1472 .bq256xx_def_vbatreg = BQ25618_VBATREG_DEF_uV,
1473 .bq256xx_def_iterm = BQ25618_ITERM_DEF_uA,
1474 .bq256xx_def_iprechg = BQ25618_IPRECHG_DEF_uA,
1475 .bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
1476
1477 .bq256xx_max_ichg = BQ25618_ICHG_MAX_uA,
1478 .bq256xx_max_vbatreg = BQ25618_VBATREG_MAX_uV,
1479
1480 .has_usb_detect = false,
1481 },
1482 };
1483
bq256xx_power_supply_init(struct bq256xx_device * bq,struct power_supply_config * psy_cfg,struct device * dev)1484 static int bq256xx_power_supply_init(struct bq256xx_device *bq,
1485 struct power_supply_config *psy_cfg, struct device *dev)
1486 {
1487 bq->charger = devm_power_supply_register(bq->dev,
1488 &bq256xx_power_supply_desc,
1489 psy_cfg);
1490 if (IS_ERR(bq->charger)) {
1491 dev_err(dev, "power supply register charger failed\n");
1492 return PTR_ERR(bq->charger);
1493 }
1494
1495 bq->battery = devm_power_supply_register(bq->dev,
1496 &bq256xx_battery_desc,
1497 psy_cfg);
1498 if (IS_ERR(bq->battery)) {
1499 dev_err(dev, "power supply register battery failed\n");
1500 return PTR_ERR(bq->battery);
1501 }
1502 return 0;
1503 }
1504
bq256xx_hw_init(struct bq256xx_device * bq)1505 static int bq256xx_hw_init(struct bq256xx_device *bq)
1506 {
1507 struct power_supply_battery_info *bat_info;
1508 int wd_reg_val = BQ256XX_WATCHDOG_DIS;
1509 int ret = 0;
1510 int i;
1511
1512 for (i = 0; i < BQ256XX_NUM_WD_VAL; i++) {
1513 if (bq->watchdog_timer == bq256xx_watchdog_time[i]) {
1514 wd_reg_val = i;
1515 break;
1516 }
1517 if (bq->watchdog_timer > bq256xx_watchdog_time[i] &&
1518 bq->watchdog_timer < bq256xx_watchdog_time[i + 1])
1519 wd_reg_val = i;
1520 }
1521 ret = regmap_update_bits(bq->regmap, BQ256XX_CHARGER_CONTROL_1,
1522 BQ256XX_WATCHDOG_MASK, wd_reg_val <<
1523 BQ256XX_WDT_BIT_SHIFT);
1524
1525 ret = power_supply_get_battery_info(bq->charger, &bat_info);
1526 if (ret == -ENOMEM)
1527 return ret;
1528
1529 if (ret) {
1530 dev_warn(bq->dev, "battery info missing, default values will be applied\n");
1531
1532 bat_info->constant_charge_current_max_ua =
1533 bq->chip_info->bq256xx_def_ichg;
1534
1535 bat_info->constant_charge_voltage_max_uv =
1536 bq->chip_info->bq256xx_def_vbatreg;
1537
1538 bat_info->precharge_current_ua =
1539 bq->chip_info->bq256xx_def_iprechg;
1540
1541 bat_info->charge_term_current_ua =
1542 bq->chip_info->bq256xx_def_iterm;
1543
1544 bq->init_data.ichg_max =
1545 bq->chip_info->bq256xx_max_ichg;
1546
1547 bq->init_data.vbatreg_max =
1548 bq->chip_info->bq256xx_max_vbatreg;
1549 } else {
1550 bq->init_data.ichg_max =
1551 bat_info->constant_charge_current_max_ua;
1552
1553 bq->init_data.vbatreg_max =
1554 bat_info->constant_charge_voltage_max_uv;
1555 }
1556
1557 ret = bq->chip_info->bq256xx_set_vindpm(bq, bq->init_data.vindpm);
1558 if (ret)
1559 return ret;
1560
1561 ret = bq->chip_info->bq256xx_set_iindpm(bq, bq->init_data.iindpm);
1562 if (ret)
1563 return ret;
1564
1565 ret = bq->chip_info->bq256xx_set_ichg(bq,
1566 bat_info->constant_charge_current_max_ua);
1567 if (ret)
1568 return ret;
1569
1570 ret = bq->chip_info->bq256xx_set_iprechg(bq,
1571 bat_info->precharge_current_ua);
1572 if (ret)
1573 return ret;
1574
1575 ret = bq->chip_info->bq256xx_set_vbatreg(bq,
1576 bat_info->constant_charge_voltage_max_uv);
1577 if (ret)
1578 return ret;
1579
1580 ret = bq->chip_info->bq256xx_set_iterm(bq,
1581 bat_info->charge_term_current_ua);
1582 if (ret)
1583 return ret;
1584
1585 power_supply_put_battery_info(bq->charger, bat_info);
1586
1587 return 0;
1588 }
1589
bq256xx_parse_dt(struct bq256xx_device * bq,struct power_supply_config * psy_cfg,struct device * dev)1590 static int bq256xx_parse_dt(struct bq256xx_device *bq,
1591 struct power_supply_config *psy_cfg, struct device *dev)
1592 {
1593 int ret = 0;
1594
1595 psy_cfg->drv_data = bq;
1596 psy_cfg->of_node = dev->of_node;
1597
1598 ret = device_property_read_u32(bq->dev, "ti,watchdog-timeout-ms",
1599 &bq->watchdog_timer);
1600 if (ret)
1601 bq->watchdog_timer = BQ256XX_WATCHDOG_DIS;
1602
1603 if (bq->watchdog_timer > BQ256XX_WATCHDOG_MAX ||
1604 bq->watchdog_timer < BQ256XX_WATCHDOG_DIS)
1605 return -EINVAL;
1606
1607 ret = device_property_read_u32(bq->dev,
1608 "input-voltage-limit-microvolt",
1609 &bq->init_data.vindpm);
1610 if (ret)
1611 bq->init_data.vindpm = bq->chip_info->bq256xx_def_vindpm;
1612
1613 ret = device_property_read_u32(bq->dev,
1614 "input-current-limit-microamp",
1615 &bq->init_data.iindpm);
1616 if (ret)
1617 bq->init_data.iindpm = bq->chip_info->bq256xx_def_iindpm;
1618
1619 return 0;
1620 }
1621
bq256xx_probe(struct i2c_client * client,const struct i2c_device_id * id)1622 static int bq256xx_probe(struct i2c_client *client,
1623 const struct i2c_device_id *id)
1624 {
1625 struct device *dev = &client->dev;
1626 struct bq256xx_device *bq;
1627 struct power_supply_config psy_cfg = { };
1628
1629 int ret;
1630
1631 bq = devm_kzalloc(dev, sizeof(*bq), GFP_KERNEL);
1632 if (!bq)
1633 return -ENOMEM;
1634
1635 bq->client = client;
1636 bq->dev = dev;
1637 bq->chip_info = &bq256xx_chip_info_tbl[id->driver_data];
1638
1639 mutex_init(&bq->lock);
1640
1641 strncpy(bq->model_name, id->name, I2C_NAME_SIZE);
1642
1643 bq->regmap = devm_regmap_init_i2c(client,
1644 bq->chip_info->bq256xx_regmap_config);
1645
1646 if (IS_ERR(bq->regmap)) {
1647 dev_err(dev, "Failed to allocate register map\n");
1648 return PTR_ERR(bq->regmap);
1649 }
1650
1651 i2c_set_clientdata(client, bq);
1652
1653 ret = bq256xx_parse_dt(bq, &psy_cfg, dev);
1654 if (ret) {
1655 dev_err(dev, "Failed to read device tree properties%d\n", ret);
1656 return ret;
1657 }
1658
1659 ret = devm_add_action_or_reset(dev, bq256xx_charger_reset, bq);
1660 if (ret)
1661 return ret;
1662
1663 /* OTG reporting */
1664 bq->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);
1665 if (!IS_ERR_OR_NULL(bq->usb2_phy)) {
1666 INIT_WORK(&bq->usb_work, bq256xx_usb_work);
1667 bq->usb_nb.notifier_call = bq256xx_usb_notifier;
1668 usb_register_notifier(bq->usb2_phy, &bq->usb_nb);
1669 }
1670
1671 bq->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3);
1672 if (!IS_ERR_OR_NULL(bq->usb3_phy)) {
1673 INIT_WORK(&bq->usb_work, bq256xx_usb_work);
1674 bq->usb_nb.notifier_call = bq256xx_usb_notifier;
1675 usb_register_notifier(bq->usb3_phy, &bq->usb_nb);
1676 }
1677
1678 if (client->irq) {
1679 ret = devm_request_threaded_irq(dev, client->irq, NULL,
1680 bq256xx_irq_handler_thread,
1681 IRQF_TRIGGER_FALLING |
1682 IRQF_ONESHOT,
1683 dev_name(&client->dev), bq);
1684 if (ret < 0) {
1685 dev_err(dev, "get irq fail: %d\n", ret);
1686 return ret;
1687 }
1688 }
1689
1690 ret = bq256xx_power_supply_init(bq, &psy_cfg, dev);
1691 if (ret) {
1692 dev_err(dev, "Failed to register power supply\n");
1693 return ret;
1694 }
1695
1696 ret = bq256xx_hw_init(bq);
1697 if (ret) {
1698 dev_err(dev, "Cannot initialize the chip.\n");
1699 return ret;
1700 }
1701
1702 return ret;
1703 }
1704
1705 static const struct i2c_device_id bq256xx_i2c_ids[] = {
1706 { "bq25600", BQ25600 },
1707 { "bq25600d", BQ25600D },
1708 { "bq25601", BQ25601 },
1709 { "bq25601d", BQ25601D },
1710 { "bq25611d", BQ25611D },
1711 { "bq25618", BQ25618 },
1712 { "bq25619", BQ25619 },
1713 {},
1714 };
1715 MODULE_DEVICE_TABLE(i2c, bq256xx_i2c_ids);
1716
1717 static const struct of_device_id bq256xx_of_match[] = {
1718 { .compatible = "ti,bq25600", .data = (void *)BQ25600 },
1719 { .compatible = "ti,bq25600d", .data = (void *)BQ25600D },
1720 { .compatible = "ti,bq25601", .data = (void *)BQ25601 },
1721 { .compatible = "ti,bq25601d", .data = (void *)BQ25601D },
1722 { .compatible = "ti,bq25611d", .data = (void *)BQ25611D },
1723 { .compatible = "ti,bq25618", .data = (void *)BQ25618 },
1724 { .compatible = "ti,bq25619", .data = (void *)BQ25619 },
1725 { },
1726 };
1727 MODULE_DEVICE_TABLE(of, bq256xx_of_match);
1728
1729 static const struct acpi_device_id bq256xx_acpi_match[] = {
1730 { "bq25600", BQ25600 },
1731 { "bq25600d", BQ25600D },
1732 { "bq25601", BQ25601 },
1733 { "bq25601d", BQ25601D },
1734 { "bq25611d", BQ25611D },
1735 { "bq25618", BQ25618 },
1736 { "bq25619", BQ25619 },
1737 {},
1738 };
1739 MODULE_DEVICE_TABLE(acpi, bq256xx_acpi_match);
1740
1741 static struct i2c_driver bq256xx_driver = {
1742 .driver = {
1743 .name = "bq256xx-charger",
1744 .of_match_table = bq256xx_of_match,
1745 .acpi_match_table = bq256xx_acpi_match,
1746 },
1747 .probe = bq256xx_probe,
1748 .id_table = bq256xx_i2c_ids,
1749 };
1750 module_i2c_driver(bq256xx_driver);
1751
1752 MODULE_AUTHOR("Ricardo Rivera-Matos <r-rivera-matos@ti.com>");
1753 MODULE_DESCRIPTION("bq256xx charger driver");
1754 MODULE_LICENSE("GPL v2");
1755