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_TS_IGNORE BIT(6)
45 #define BQ256XX_TS_IGNORE_SHIFT 6
46
47 #define BQ256XX_VINDPM_MASK GENMASK(3, 0)
48 #define BQ256XX_VINDPM_STEP_uV 100000
49 #define BQ256XX_VINDPM_OFFSET_uV 3900000
50 #define BQ256XX_VINDPM_MIN_uV 3900000
51 #define BQ256XX_VINDPM_MAX_uV 5400000
52 #define BQ256XX_VINDPM_DEF_uV 4500000
53
54 #define BQ256XX_VBATREG_MASK GENMASK(7, 3)
55 #define BQ2560X_VBATREG_STEP_uV 32000
56 #define BQ2560X_VBATREG_OFFSET_uV 3856000
57 #define BQ2560X_VBATREG_MIN_uV 3856000
58 #define BQ2560X_VBATREG_MAX_uV 4624000
59 #define BQ2560X_VBATREG_DEF_uV 4208000
60 #define BQ25601D_VBATREG_OFFSET_uV 3847000
61 #define BQ25601D_VBATREG_MIN_uV 3847000
62 #define BQ25601D_VBATREG_MAX_uV 4615000
63 #define BQ25601D_VBATREG_DEF_uV 4199000
64 #define BQ2561X_VBATREG_STEP_uV 10000
65 #define BQ25611D_VBATREG_MIN_uV 3494000
66 #define BQ25611D_VBATREG_MAX_uV 4510000
67 #define BQ25611D_VBATREG_DEF_uV 4190000
68 #define BQ25618_VBATREG_MIN_uV 3504000
69 #define BQ25618_VBATREG_MAX_uV 4500000
70 #define BQ25618_VBATREG_DEF_uV 4200000
71 #define BQ256XX_VBATREG_BIT_SHIFT 3
72 #define BQ2561X_VBATREG_THRESH 0x8
73 #define BQ25611D_VBATREG_THRESH_uV 4290000
74 #define BQ25618_VBATREG_THRESH_uV 4300000
75
76 #define BQ256XX_CHG_CONFIG_MASK BIT(4)
77 #define BQ256XX_CHG_CONFIG_BIT_SHIFT 4
78
79 #define BQ256XX_ITERM_MASK GENMASK(3, 0)
80 #define BQ256XX_ITERM_STEP_uA 60000
81 #define BQ256XX_ITERM_OFFSET_uA 60000
82 #define BQ256XX_ITERM_MIN_uA 60000
83 #define BQ256XX_ITERM_MAX_uA 780000
84 #define BQ256XX_ITERM_DEF_uA 180000
85 #define BQ25618_ITERM_STEP_uA 20000
86 #define BQ25618_ITERM_OFFSET_uA 20000
87 #define BQ25618_ITERM_MIN_uA 20000
88 #define BQ25618_ITERM_MAX_uA 260000
89 #define BQ25618_ITERM_DEF_uA 60000
90
91 #define BQ256XX_IPRECHG_MASK GENMASK(7, 4)
92 #define BQ256XX_IPRECHG_STEP_uA 60000
93 #define BQ256XX_IPRECHG_OFFSET_uA 60000
94 #define BQ256XX_IPRECHG_MIN_uA 60000
95 #define BQ256XX_IPRECHG_MAX_uA 780000
96 #define BQ256XX_IPRECHG_DEF_uA 180000
97 #define BQ25618_IPRECHG_STEP_uA 20000
98 #define BQ25618_IPRECHG_OFFSET_uA 20000
99 #define BQ25618_IPRECHG_MIN_uA 20000
100 #define BQ25618_IPRECHG_MAX_uA 260000
101 #define BQ25618_IPRECHG_DEF_uA 40000
102 #define BQ256XX_IPRECHG_BIT_SHIFT 4
103
104 #define BQ256XX_ICHG_MASK GENMASK(5, 0)
105 #define BQ256XX_ICHG_STEP_uA 60000
106 #define BQ256XX_ICHG_MIN_uA 0
107 #define BQ256XX_ICHG_MAX_uA 3000000
108 #define BQ2560X_ICHG_DEF_uA 2040000
109 #define BQ25611D_ICHG_DEF_uA 1020000
110 #define BQ25618_ICHG_STEP_uA 20000
111 #define BQ25618_ICHG_MIN_uA 0
112 #define BQ25618_ICHG_MAX_uA 1500000
113 #define BQ25618_ICHG_DEF_uA 340000
114 #define BQ25618_ICHG_THRESH 0x3c
115 #define BQ25618_ICHG_THRESH_uA 1180000
116
117 #define BQ256XX_VBUS_STAT_MASK GENMASK(7, 5)
118 #define BQ256XX_VBUS_STAT_NO_INPUT 0
119 #define BQ256XX_VBUS_STAT_USB_SDP BIT(5)
120 #define BQ256XX_VBUS_STAT_USB_CDP BIT(6)
121 #define BQ256XX_VBUS_STAT_USB_DCP (BIT(6) | BIT(5))
122 #define BQ256XX_VBUS_STAT_USB_OTG (BIT(7) | BIT(6) | BIT(5))
123
124 #define BQ256XX_CHRG_STAT_MASK GENMASK(4, 3)
125 #define BQ256XX_CHRG_STAT_NOT_CHRGING 0
126 #define BQ256XX_CHRG_STAT_PRECHRGING BIT(3)
127 #define BQ256XX_CHRG_STAT_FAST_CHRGING BIT(4)
128 #define BQ256XX_CHRG_STAT_CHRG_TERM (BIT(4) | BIT(3))
129
130 #define BQ256XX_PG_STAT_MASK BIT(2)
131 #define BQ256XX_WDT_FAULT_MASK BIT(7)
132 #define BQ256XX_CHRG_FAULT_MASK GENMASK(5, 4)
133 #define BQ256XX_CHRG_FAULT_NORMAL 0
134 #define BQ256XX_CHRG_FAULT_INPUT BIT(4)
135 #define BQ256XX_CHRG_FAULT_THERM BIT(5)
136 #define BQ256XX_CHRG_FAULT_CST_EXPIRE (BIT(5) | BIT(4))
137 #define BQ256XX_BAT_FAULT_MASK BIT(3)
138 #define BQ256XX_NTC_FAULT_MASK GENMASK(2, 0)
139 #define BQ256XX_NTC_FAULT_WARM BIT(1)
140 #define BQ256XX_NTC_FAULT_COOL (BIT(1) | BIT(0))
141 #define BQ256XX_NTC_FAULT_COLD (BIT(2) | BIT(0))
142 #define BQ256XX_NTC_FAULT_HOT (BIT(2) | BIT(1))
143
144 #define BQ256XX_NUM_WD_VAL 4
145 #define BQ256XX_WATCHDOG_MASK GENMASK(5, 4)
146 #define BQ256XX_WATCHDOG_MAX 1600000
147 #define BQ256XX_WATCHDOG_DIS 0
148 #define BQ256XX_WDT_BIT_SHIFT 4
149
150 #define BQ256XX_REG_RST BIT(7)
151
152 /**
153 * struct bq256xx_init_data -
154 * @ichg: fast charge current
155 * @iindpm: input current limit
156 * @vbatreg: charge voltage
157 * @iterm: termination current
158 * @iprechg: precharge current
159 * @vindpm: input voltage limit
160 * @ichg_max: maximum fast charge current
161 * @vbatreg_max: maximum charge voltage
162 * @ts_ignore: TS_IGNORE flag
163 */
164 struct bq256xx_init_data {
165 u32 ichg;
166 u32 iindpm;
167 u32 vbatreg;
168 u32 iterm;
169 u32 iprechg;
170 u32 vindpm;
171 u32 ichg_max;
172 u32 vbatreg_max;
173 bool ts_ignore;
174 };
175
176 /**
177 * struct bq256xx_state -
178 * @vbus_stat: VBUS status according to BQ256XX_CHARGER_STATUS_0
179 * @chrg_stat: charging status according to BQ256XX_CHARGER_STATUS_0
180 * @online: PG status according to BQ256XX_CHARGER_STATUS_0
181 *
182 * @wdt_fault: watchdog fault according to BQ256XX_CHARGER_STATUS_1
183 * @bat_fault: battery fault according to BQ256XX_CHARGER_STATUS_1
184 * @chrg_fault: charging fault according to BQ256XX_CHARGER_STATUS_1
185 * @ntc_fault: TS fault according to BQ256XX_CHARGER_STATUS_1
186 */
187 struct bq256xx_state {
188 u8 vbus_stat;
189 u8 chrg_stat;
190 bool online;
191
192 u8 wdt_fault;
193 u8 bat_fault;
194 u8 chrg_fault;
195 u8 ntc_fault;
196 };
197
198 enum bq256xx_id {
199 BQ25600,
200 BQ25600D,
201 BQ25601,
202 BQ25601D,
203 BQ25618,
204 BQ25619,
205 BQ25611D,
206 };
207
208 /**
209 * struct bq256xx_device -
210 * @client: i2c client structure
211 * @regmap: register map structure
212 * @dev: device structure
213 * @charger: power supply registered for the charger
214 * @battery: power supply registered for the battery
215 * @lock: mutex lock structure
216 *
217 * @usb2_phy: usb_phy identifier
218 * @usb3_phy: usb_phy identifier
219 * @usb_nb: notifier block
220 * @usb_work: usb work queue
221 * @usb_event: usb_event code
222 *
223 * @model_name: i2c name string
224 *
225 * @init_data: initialization data
226 * @chip_info: device variant information
227 * @state: device status and faults
228 * @watchdog_timer: watchdog timer value in milliseconds
229 */
230 struct bq256xx_device {
231 struct i2c_client *client;
232 struct device *dev;
233 struct power_supply *charger;
234 struct power_supply *battery;
235 struct mutex lock;
236 struct regmap *regmap;
237
238 struct usb_phy *usb2_phy;
239 struct usb_phy *usb3_phy;
240 struct notifier_block usb_nb;
241 struct work_struct usb_work;
242 unsigned long usb_event;
243
244 char model_name[I2C_NAME_SIZE];
245
246 struct bq256xx_init_data init_data;
247 const struct bq256xx_chip_info *chip_info;
248 struct bq256xx_state state;
249 int watchdog_timer;
250 };
251
252 /**
253 * struct bq256xx_chip_info -
254 * @model_id: device instance
255 *
256 * @bq256xx_regmap_config: regmap configuration struct
257 * @bq256xx_get_ichg: pointer to instance specific get_ichg function
258 * @bq256xx_get_iindpm: pointer to instance specific get_iindpm function
259 * @bq256xx_get_vbatreg: pointer to instance specific get_vbatreg function
260 * @bq256xx_get_iterm: pointer to instance specific get_iterm function
261 * @bq256xx_get_iprechg: pointer to instance specific get_iprechg function
262 * @bq256xx_get_vindpm: pointer to instance specific get_vindpm function
263 *
264 * @bq256xx_set_ichg: pointer to instance specific set_ichg function
265 * @bq256xx_set_iindpm: pointer to instance specific set_iindpm function
266 * @bq256xx_set_vbatreg: pointer to instance specific set_vbatreg function
267 * @bq256xx_set_iterm: pointer to instance specific set_iterm function
268 * @bq256xx_set_iprechg: pointer to instance specific set_iprechg function
269 * @bq256xx_set_vindpm: pointer to instance specific set_vindpm function
270 * @bq256xx_set_charge_type: pointer to instance specific set_charge_type function
271 * @bq256xx_set_ts_ignore: pointer to instance specific set_ts_ignore function
272 *
273 * @bq256xx_def_ichg: default ichg value in microamps
274 * @bq256xx_def_iindpm: default iindpm value in microamps
275 * @bq256xx_def_vbatreg: default vbatreg value in microvolts
276 * @bq256xx_def_iterm: default iterm value in microamps
277 * @bq256xx_def_iprechg: default iprechg value in microamps
278 * @bq256xx_def_vindpm: default vindpm value in microvolts
279 *
280 * @bq256xx_max_ichg: maximum charge current in microamps
281 * @bq256xx_max_vbatreg: maximum battery regulation voltage in microvolts
282 *
283 * @has_usb_detect: indicates whether device has BC1.2 detection
284 */
285 struct bq256xx_chip_info {
286 int model_id;
287
288 const struct regmap_config *bq256xx_regmap_config;
289
290 int (*bq256xx_get_ichg)(struct bq256xx_device *bq);
291 int (*bq256xx_get_iindpm)(struct bq256xx_device *bq);
292 int (*bq256xx_get_vbatreg)(struct bq256xx_device *bq);
293 int (*bq256xx_get_iterm)(struct bq256xx_device *bq);
294 int (*bq256xx_get_iprechg)(struct bq256xx_device *bq);
295 int (*bq256xx_get_vindpm)(struct bq256xx_device *bq);
296
297 int (*bq256xx_set_ichg)(struct bq256xx_device *bq, int ichg);
298 int (*bq256xx_set_iindpm)(struct bq256xx_device *bq, int iindpm);
299 int (*bq256xx_set_vbatreg)(struct bq256xx_device *bq, int vbatreg);
300 int (*bq256xx_set_iterm)(struct bq256xx_device *bq, int iterm);
301 int (*bq256xx_set_iprechg)(struct bq256xx_device *bq, int iprechg);
302 int (*bq256xx_set_vindpm)(struct bq256xx_device *bq, int vindpm);
303 int (*bq256xx_set_charge_type)(struct bq256xx_device *bq, int type);
304 int (*bq256xx_set_ts_ignore)(struct bq256xx_device *bq, bool ts_ignore);
305
306 int bq256xx_def_ichg;
307 int bq256xx_def_iindpm;
308 int bq256xx_def_vbatreg;
309 int bq256xx_def_iterm;
310 int bq256xx_def_iprechg;
311 int bq256xx_def_vindpm;
312
313 int bq256xx_max_ichg;
314 int bq256xx_max_vbatreg;
315
316 bool has_usb_detect;
317 };
318
319 static int bq256xx_watchdog_time[BQ256XX_NUM_WD_VAL] = {
320 0, 40000, 80000, 1600000
321 };
322
323 static const int bq25611d_vbatreg_values[] = {
324 3494000, 3590000, 3686000, 3790000, 3894000, 3990000, 4090000, 4140000,
325 4190000
326 };
327
328 static const int bq25618_619_vbatreg_values[] = {
329 3504000, 3600000, 3696000, 3800000, 3904000, 4000000, 4100000, 4150000,
330 4200000
331 };
332
333 static const int bq25618_619_ichg_values[] = {
334 1290000, 1360000, 1430000, 1500000
335 };
336
337 static enum power_supply_usb_type bq256xx_usb_type[] = {
338 POWER_SUPPLY_USB_TYPE_SDP,
339 POWER_SUPPLY_USB_TYPE_CDP,
340 POWER_SUPPLY_USB_TYPE_DCP,
341 POWER_SUPPLY_USB_TYPE_UNKNOWN,
342 POWER_SUPPLY_USB_TYPE_ACA,
343 };
344
bq256xx_array_parse(int array_size,int val,const int array[])345 static int bq256xx_array_parse(int array_size, int val, const int array[])
346 {
347 int i = 0;
348
349 if (val < array[i])
350 return i - 1;
351
352 if (val >= array[array_size - 1])
353 return array_size - 1;
354
355 for (i = 1; i < array_size; i++) {
356 if (val == array[i])
357 return i;
358
359 if (val > array[i - 1] && val < array[i]) {
360 if (val < array[i])
361 return i - 1;
362 else
363 return i;
364 }
365 }
366 return -EINVAL;
367 }
368
bq256xx_usb_notifier(struct notifier_block * nb,unsigned long val,void * priv)369 static int bq256xx_usb_notifier(struct notifier_block *nb, unsigned long val,
370 void *priv)
371 {
372 struct bq256xx_device *bq =
373 container_of(nb, struct bq256xx_device, usb_nb);
374
375 bq->usb_event = val;
376 queue_work(system_power_efficient_wq, &bq->usb_work);
377
378 return NOTIFY_OK;
379 }
380
bq256xx_usb_work(struct work_struct * data)381 static void bq256xx_usb_work(struct work_struct *data)
382 {
383 struct bq256xx_device *bq =
384 container_of(data, struct bq256xx_device, usb_work);
385
386 switch (bq->usb_event) {
387 case USB_EVENT_ID:
388 break;
389 case USB_EVENT_NONE:
390 power_supply_changed(bq->charger);
391 break;
392 default:
393 dev_err(bq->dev, "Error switching to charger mode.\n");
394 break;
395 }
396 }
397
398 static struct reg_default bq2560x_reg_defs[] = {
399 {BQ256XX_INPUT_CURRENT_LIMIT, 0x17},
400 {BQ256XX_CHARGER_CONTROL_0, 0x1a},
401 {BQ256XX_CHARGE_CURRENT_LIMIT, 0xa2},
402 {BQ256XX_PRECHG_AND_TERM_CURR_LIM, 0x22},
403 {BQ256XX_BATTERY_VOLTAGE_LIMIT, 0x58},
404 {BQ256XX_CHARGER_CONTROL_1, 0x9f},
405 {BQ256XX_CHARGER_CONTROL_2, 0x66},
406 {BQ256XX_CHARGER_CONTROL_3, 0x4c},
407 };
408
409 static struct reg_default bq25611d_reg_defs[] = {
410 {BQ256XX_INPUT_CURRENT_LIMIT, 0x17},
411 {BQ256XX_CHARGER_CONTROL_0, 0x1a},
412 {BQ256XX_CHARGE_CURRENT_LIMIT, 0x91},
413 {BQ256XX_PRECHG_AND_TERM_CURR_LIM, 0x12},
414 {BQ256XX_BATTERY_VOLTAGE_LIMIT, 0x40},
415 {BQ256XX_CHARGER_CONTROL_1, 0x9e},
416 {BQ256XX_CHARGER_CONTROL_2, 0xe6},
417 {BQ256XX_CHARGER_CONTROL_3, 0x4c},
418 {BQ256XX_PART_INFORMATION, 0x54},
419 {BQ256XX_CHARGER_CONTROL_4, 0x75},
420 };
421
422 static struct reg_default bq25618_619_reg_defs[] = {
423 {BQ256XX_INPUT_CURRENT_LIMIT, 0x17},
424 {BQ256XX_CHARGER_CONTROL_0, 0x1a},
425 {BQ256XX_CHARGE_CURRENT_LIMIT, 0x91},
426 {BQ256XX_PRECHG_AND_TERM_CURR_LIM, 0x12},
427 {BQ256XX_BATTERY_VOLTAGE_LIMIT, 0x40},
428 {BQ256XX_CHARGER_CONTROL_1, 0x9e},
429 {BQ256XX_CHARGER_CONTROL_2, 0xe6},
430 {BQ256XX_CHARGER_CONTROL_3, 0x4c},
431 {BQ256XX_PART_INFORMATION, 0x2c},
432 {BQ256XX_CHARGER_CONTROL_4, 0x75},
433 };
434
bq256xx_get_state(struct bq256xx_device * bq,struct bq256xx_state * state)435 static int bq256xx_get_state(struct bq256xx_device *bq,
436 struct bq256xx_state *state)
437 {
438 unsigned int charger_status_0;
439 unsigned int charger_status_1;
440 int ret;
441
442 ret = regmap_read(bq->regmap, BQ256XX_CHARGER_STATUS_0,
443 &charger_status_0);
444 if (ret)
445 return ret;
446
447 ret = regmap_read(bq->regmap, BQ256XX_CHARGER_STATUS_1,
448 &charger_status_1);
449 if (ret)
450 return ret;
451
452 state->vbus_stat = charger_status_0 & BQ256XX_VBUS_STAT_MASK;
453 state->chrg_stat = charger_status_0 & BQ256XX_CHRG_STAT_MASK;
454 state->online = charger_status_0 & BQ256XX_PG_STAT_MASK;
455
456 state->wdt_fault = charger_status_1 & BQ256XX_WDT_FAULT_MASK;
457 state->bat_fault = charger_status_1 & BQ256XX_BAT_FAULT_MASK;
458 state->chrg_fault = charger_status_1 & BQ256XX_CHRG_FAULT_MASK;
459 state->ntc_fault = charger_status_1 & BQ256XX_NTC_FAULT_MASK;
460
461 return 0;
462 }
463
bq256xx_set_charge_type(struct bq256xx_device * bq,int type)464 static int bq256xx_set_charge_type(struct bq256xx_device *bq, int type)
465 {
466 int chg_config = 0;
467
468 switch (type) {
469 case POWER_SUPPLY_CHARGE_TYPE_NONE:
470 chg_config = 0x0;
471 break;
472 case POWER_SUPPLY_CHARGE_TYPE_TRICKLE:
473 case POWER_SUPPLY_CHARGE_TYPE_FAST:
474 chg_config = 0x1;
475 break;
476 default:
477 return -EINVAL;
478 }
479
480 return regmap_update_bits(bq->regmap, BQ256XX_CHARGER_CONTROL_0,
481 BQ256XX_CHG_CONFIG_MASK,
482 (chg_config ? 1 : 0) << BQ256XX_CHG_CONFIG_BIT_SHIFT);
483 }
484
bq256xx_get_ichg_curr(struct bq256xx_device * bq)485 static int bq256xx_get_ichg_curr(struct bq256xx_device *bq)
486 {
487 unsigned int charge_current_limit;
488 unsigned int ichg_reg_code;
489 int ret;
490
491 ret = regmap_read(bq->regmap, BQ256XX_CHARGE_CURRENT_LIMIT,
492 &charge_current_limit);
493 if (ret)
494 return ret;
495
496 ichg_reg_code = charge_current_limit & BQ256XX_ICHG_MASK;
497
498 return ichg_reg_code * BQ256XX_ICHG_STEP_uA;
499 }
500
bq25618_619_get_ichg_curr(struct bq256xx_device * bq)501 static int bq25618_619_get_ichg_curr(struct bq256xx_device *bq)
502 {
503 unsigned int charge_current_limit;
504 unsigned int ichg_reg_code;
505 int ret;
506
507 ret = regmap_read(bq->regmap, BQ256XX_CHARGE_CURRENT_LIMIT,
508 &charge_current_limit);
509 if (ret)
510 return ret;
511
512 ichg_reg_code = charge_current_limit & BQ256XX_ICHG_MASK;
513
514 if (ichg_reg_code < BQ25618_ICHG_THRESH)
515 return ichg_reg_code * BQ25618_ICHG_STEP_uA;
516
517 return bq25618_619_ichg_values[ichg_reg_code - BQ25618_ICHG_THRESH];
518 }
519
bq256xx_set_ichg_curr(struct bq256xx_device * bq,int ichg)520 static int bq256xx_set_ichg_curr(struct bq256xx_device *bq, int ichg)
521 {
522 unsigned int ichg_reg_code;
523 int ichg_max = bq->init_data.ichg_max;
524
525 ichg = clamp(ichg, BQ256XX_ICHG_MIN_uA, ichg_max);
526 ichg_reg_code = ichg / BQ256XX_ICHG_STEP_uA;
527
528 return regmap_update_bits(bq->regmap, BQ256XX_CHARGE_CURRENT_LIMIT,
529 BQ256XX_ICHG_MASK, ichg_reg_code);
530 }
531
bq25618_619_set_ichg_curr(struct bq256xx_device * bq,int ichg)532 static int bq25618_619_set_ichg_curr(struct bq256xx_device *bq, int ichg)
533 {
534 int array_size = ARRAY_SIZE(bq25618_619_ichg_values);
535 unsigned int ichg_reg_code;
536 int ichg_max = bq->init_data.ichg_max;
537
538 ichg = clamp(ichg, BQ25618_ICHG_MIN_uA, ichg_max);
539
540 if (ichg <= BQ25618_ICHG_THRESH_uA) {
541 ichg_reg_code = ichg / BQ25618_ICHG_STEP_uA;
542 } else {
543 ichg_reg_code = bq256xx_array_parse(array_size, ichg,
544 bq25618_619_ichg_values) + BQ25618_ICHG_THRESH;
545 }
546
547 return regmap_update_bits(bq->regmap, BQ256XX_CHARGE_CURRENT_LIMIT,
548 BQ256XX_ICHG_MASK, ichg_reg_code);
549 }
550
bq25618_619_get_chrg_volt(struct bq256xx_device * bq)551 static int bq25618_619_get_chrg_volt(struct bq256xx_device *bq)
552 {
553 unsigned int battery_volt_lim;
554 unsigned int vbatreg_reg_code;
555 int ret;
556
557 ret = regmap_read(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
558 &battery_volt_lim);
559
560 if (ret)
561 return ret;
562
563 vbatreg_reg_code = (battery_volt_lim & BQ256XX_VBATREG_MASK) >>
564 BQ256XX_VBATREG_BIT_SHIFT;
565
566 if (vbatreg_reg_code > BQ2561X_VBATREG_THRESH)
567 return ((vbatreg_reg_code - BQ2561X_VBATREG_THRESH) *
568 BQ2561X_VBATREG_STEP_uV) +
569 BQ25618_VBATREG_THRESH_uV;
570
571 return bq25618_619_vbatreg_values[vbatreg_reg_code];
572 }
573
bq25611d_get_chrg_volt(struct bq256xx_device * bq)574 static int bq25611d_get_chrg_volt(struct bq256xx_device *bq)
575 {
576 unsigned int battery_volt_lim;
577 unsigned int vbatreg_reg_code;
578 int ret;
579
580 ret = regmap_read(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
581 &battery_volt_lim);
582 if (ret)
583 return ret;
584
585 vbatreg_reg_code = (battery_volt_lim & BQ256XX_VBATREG_MASK) >>
586 BQ256XX_VBATREG_BIT_SHIFT;
587
588 if (vbatreg_reg_code > BQ2561X_VBATREG_THRESH)
589 return ((vbatreg_reg_code - BQ2561X_VBATREG_THRESH) *
590 BQ2561X_VBATREG_STEP_uV) +
591 BQ25611D_VBATREG_THRESH_uV;
592
593 return bq25611d_vbatreg_values[vbatreg_reg_code];
594 }
595
bq2560x_get_chrg_volt(struct bq256xx_device * bq)596 static int bq2560x_get_chrg_volt(struct bq256xx_device *bq)
597 {
598 unsigned int battery_volt_lim;
599 unsigned int vbatreg_reg_code;
600 int ret;
601
602 ret = regmap_read(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
603 &battery_volt_lim);
604 if (ret)
605 return ret;
606
607 vbatreg_reg_code = (battery_volt_lim & BQ256XX_VBATREG_MASK) >>
608 BQ256XX_VBATREG_BIT_SHIFT;
609
610 return (vbatreg_reg_code * BQ2560X_VBATREG_STEP_uV)
611 + BQ2560X_VBATREG_OFFSET_uV;
612 }
613
bq25601d_get_chrg_volt(struct bq256xx_device * bq)614 static int bq25601d_get_chrg_volt(struct bq256xx_device *bq)
615 {
616 unsigned int battery_volt_lim;
617 unsigned int vbatreg_reg_code;
618 int ret;
619
620 ret = regmap_read(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
621 &battery_volt_lim);
622 if (ret)
623 return ret;
624
625 vbatreg_reg_code = (battery_volt_lim & BQ256XX_VBATREG_MASK) >>
626 BQ256XX_VBATREG_BIT_SHIFT;
627
628 return (vbatreg_reg_code * BQ2560X_VBATREG_STEP_uV)
629 + BQ25601D_VBATREG_OFFSET_uV;
630 }
631
bq25618_619_set_chrg_volt(struct bq256xx_device * bq,int vbatreg)632 static int bq25618_619_set_chrg_volt(struct bq256xx_device *bq, int vbatreg)
633 {
634 int array_size = ARRAY_SIZE(bq25618_619_vbatreg_values);
635 unsigned int vbatreg_reg_code;
636 int vbatreg_max = bq->init_data.vbatreg_max;
637
638 vbatreg = clamp(vbatreg, BQ25618_VBATREG_MIN_uV, vbatreg_max);
639
640 if (vbatreg > BQ25618_VBATREG_THRESH_uV)
641 vbatreg_reg_code = ((vbatreg -
642 BQ25618_VBATREG_THRESH_uV) /
643 (BQ2561X_VBATREG_STEP_uV)) + BQ2561X_VBATREG_THRESH;
644 else {
645 vbatreg_reg_code = bq256xx_array_parse(array_size, vbatreg,
646 bq25618_619_vbatreg_values);
647 }
648
649 return regmap_update_bits(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
650 BQ256XX_VBATREG_MASK, vbatreg_reg_code <<
651 BQ256XX_VBATREG_BIT_SHIFT);
652 }
653
bq25611d_set_chrg_volt(struct bq256xx_device * bq,int vbatreg)654 static int bq25611d_set_chrg_volt(struct bq256xx_device *bq, int vbatreg)
655 {
656 int array_size = ARRAY_SIZE(bq25611d_vbatreg_values);
657 unsigned int vbatreg_reg_code;
658 int vbatreg_max = bq->init_data.vbatreg_max;
659
660 vbatreg = clamp(vbatreg, BQ25611D_VBATREG_MIN_uV, vbatreg_max);
661
662 if (vbatreg > BQ25611D_VBATREG_THRESH_uV)
663 vbatreg_reg_code = ((vbatreg -
664 BQ25611D_VBATREG_THRESH_uV) /
665 (BQ2561X_VBATREG_STEP_uV)) + BQ2561X_VBATREG_THRESH;
666 else {
667 vbatreg_reg_code = bq256xx_array_parse(array_size, vbatreg,
668 bq25611d_vbatreg_values);
669 }
670
671 return regmap_update_bits(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
672 BQ256XX_VBATREG_MASK, vbatreg_reg_code <<
673 BQ256XX_VBATREG_BIT_SHIFT);
674 }
675
bq2560x_set_chrg_volt(struct bq256xx_device * bq,int vbatreg)676 static int bq2560x_set_chrg_volt(struct bq256xx_device *bq, int vbatreg)
677 {
678 unsigned int vbatreg_reg_code;
679 int vbatreg_max = bq->init_data.vbatreg_max;
680
681 vbatreg = clamp(vbatreg, BQ2560X_VBATREG_MIN_uV, vbatreg_max);
682
683 vbatreg_reg_code = (vbatreg - BQ2560X_VBATREG_OFFSET_uV) /
684 BQ2560X_VBATREG_STEP_uV;
685
686 return regmap_update_bits(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
687 BQ256XX_VBATREG_MASK, vbatreg_reg_code <<
688 BQ256XX_VBATREG_BIT_SHIFT);
689 }
690
bq25601d_set_chrg_volt(struct bq256xx_device * bq,int vbatreg)691 static int bq25601d_set_chrg_volt(struct bq256xx_device *bq, int vbatreg)
692 {
693 unsigned int vbatreg_reg_code;
694 int vbatreg_max = bq->init_data.vbatreg_max;
695
696 vbatreg = clamp(vbatreg, BQ25601D_VBATREG_MIN_uV, vbatreg_max);
697
698 vbatreg_reg_code = (vbatreg - BQ25601D_VBATREG_OFFSET_uV) /
699 BQ2560X_VBATREG_STEP_uV;
700
701 return regmap_update_bits(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
702 BQ256XX_VBATREG_MASK, vbatreg_reg_code <<
703 BQ256XX_VBATREG_BIT_SHIFT);
704 }
705
bq256xx_set_ts_ignore(struct bq256xx_device * bq,bool ts_ignore)706 static int bq256xx_set_ts_ignore(struct bq256xx_device *bq, bool ts_ignore)
707 {
708 return regmap_update_bits(bq->regmap, BQ256XX_INPUT_CURRENT_LIMIT,
709 BQ256XX_TS_IGNORE, (ts_ignore ? 1 : 0) << BQ256XX_TS_IGNORE_SHIFT);
710 }
711
bq256xx_get_prechrg_curr(struct bq256xx_device * bq)712 static int bq256xx_get_prechrg_curr(struct bq256xx_device *bq)
713 {
714 unsigned int prechg_and_term_curr_lim;
715 unsigned int iprechg_reg_code;
716 int ret;
717
718 ret = regmap_read(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
719 &prechg_and_term_curr_lim);
720 if (ret)
721 return ret;
722
723 iprechg_reg_code = (prechg_and_term_curr_lim & BQ256XX_IPRECHG_MASK)
724 >> BQ256XX_IPRECHG_BIT_SHIFT;
725
726 return (iprechg_reg_code * BQ256XX_IPRECHG_STEP_uA) +
727 BQ256XX_IPRECHG_OFFSET_uA;
728 }
729
bq256xx_set_prechrg_curr(struct bq256xx_device * bq,int iprechg)730 static int bq256xx_set_prechrg_curr(struct bq256xx_device *bq, int iprechg)
731 {
732 unsigned int iprechg_reg_code;
733
734 iprechg = clamp(iprechg, BQ256XX_IPRECHG_MIN_uA,
735 BQ256XX_IPRECHG_MAX_uA);
736
737 iprechg_reg_code = ((iprechg - BQ256XX_IPRECHG_OFFSET_uA) /
738 BQ256XX_IPRECHG_STEP_uA) << BQ256XX_IPRECHG_BIT_SHIFT;
739
740 return regmap_update_bits(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
741 BQ256XX_IPRECHG_MASK, iprechg_reg_code);
742 }
743
bq25618_619_get_prechrg_curr(struct bq256xx_device * bq)744 static int bq25618_619_get_prechrg_curr(struct bq256xx_device *bq)
745 {
746 unsigned int prechg_and_term_curr_lim;
747 unsigned int iprechg_reg_code;
748 int ret;
749
750 ret = regmap_read(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
751 &prechg_and_term_curr_lim);
752 if (ret)
753 return ret;
754
755 iprechg_reg_code = (prechg_and_term_curr_lim & BQ256XX_IPRECHG_MASK)
756 >> BQ256XX_IPRECHG_BIT_SHIFT;
757
758 return (iprechg_reg_code * BQ25618_IPRECHG_STEP_uA) +
759 BQ25618_IPRECHG_OFFSET_uA;
760 }
761
bq25618_619_set_prechrg_curr(struct bq256xx_device * bq,int iprechg)762 static int bq25618_619_set_prechrg_curr(struct bq256xx_device *bq, int iprechg)
763 {
764 unsigned int iprechg_reg_code;
765
766 iprechg = clamp(iprechg, BQ25618_IPRECHG_MIN_uA,
767 BQ25618_IPRECHG_MAX_uA);
768
769 iprechg_reg_code = ((iprechg - BQ25618_IPRECHG_OFFSET_uA) /
770 BQ25618_IPRECHG_STEP_uA) << BQ256XX_IPRECHG_BIT_SHIFT;
771
772 return regmap_update_bits(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
773 BQ256XX_IPRECHG_MASK, iprechg_reg_code);
774 }
775
bq256xx_get_term_curr(struct bq256xx_device * bq)776 static int bq256xx_get_term_curr(struct bq256xx_device *bq)
777 {
778 unsigned int prechg_and_term_curr_lim;
779 unsigned int iterm_reg_code;
780 int ret;
781
782 ret = regmap_read(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
783 &prechg_and_term_curr_lim);
784 if (ret)
785 return ret;
786
787 iterm_reg_code = prechg_and_term_curr_lim & BQ256XX_ITERM_MASK;
788
789 return (iterm_reg_code * BQ256XX_ITERM_STEP_uA) +
790 BQ256XX_ITERM_OFFSET_uA;
791 }
792
bq256xx_set_term_curr(struct bq256xx_device * bq,int iterm)793 static int bq256xx_set_term_curr(struct bq256xx_device *bq, int iterm)
794 {
795 unsigned int iterm_reg_code;
796
797 iterm = clamp(iterm, BQ256XX_ITERM_MIN_uA, BQ256XX_ITERM_MAX_uA);
798
799 iterm_reg_code = (iterm - BQ256XX_ITERM_OFFSET_uA) /
800 BQ256XX_ITERM_STEP_uA;
801
802 return regmap_update_bits(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
803 BQ256XX_ITERM_MASK, iterm_reg_code);
804 }
805
bq25618_619_get_term_curr(struct bq256xx_device * bq)806 static int bq25618_619_get_term_curr(struct bq256xx_device *bq)
807 {
808 unsigned int prechg_and_term_curr_lim;
809 unsigned int iterm_reg_code;
810 int ret;
811
812 ret = regmap_read(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
813 &prechg_and_term_curr_lim);
814 if (ret)
815 return ret;
816
817 iterm_reg_code = prechg_and_term_curr_lim & BQ256XX_ITERM_MASK;
818
819 return (iterm_reg_code * BQ25618_ITERM_STEP_uA) +
820 BQ25618_ITERM_OFFSET_uA;
821 }
822
bq25618_619_set_term_curr(struct bq256xx_device * bq,int iterm)823 static int bq25618_619_set_term_curr(struct bq256xx_device *bq, int iterm)
824 {
825 unsigned int iterm_reg_code;
826
827 iterm = clamp(iterm, BQ25618_ITERM_MIN_uA, BQ25618_ITERM_MAX_uA);
828
829 iterm_reg_code = (iterm - BQ25618_ITERM_OFFSET_uA) /
830 BQ25618_ITERM_STEP_uA;
831
832 return regmap_update_bits(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
833 BQ256XX_ITERM_MASK, iterm_reg_code);
834 }
835
bq256xx_get_input_volt_lim(struct bq256xx_device * bq)836 static int bq256xx_get_input_volt_lim(struct bq256xx_device *bq)
837 {
838 unsigned int charger_control_2;
839 unsigned int vindpm_reg_code;
840 int ret;
841
842 ret = regmap_read(bq->regmap, BQ256XX_CHARGER_CONTROL_2,
843 &charger_control_2);
844 if (ret)
845 return ret;
846
847 vindpm_reg_code = charger_control_2 & BQ256XX_VINDPM_MASK;
848
849 return (vindpm_reg_code * BQ256XX_VINDPM_STEP_uV) +
850 BQ256XX_VINDPM_OFFSET_uV;
851 }
852
bq256xx_set_input_volt_lim(struct bq256xx_device * bq,int vindpm)853 static int bq256xx_set_input_volt_lim(struct bq256xx_device *bq, int vindpm)
854 {
855 unsigned int vindpm_reg_code;
856
857 vindpm = clamp(vindpm, BQ256XX_VINDPM_MIN_uV, BQ256XX_VINDPM_MAX_uV);
858
859 vindpm_reg_code = (vindpm - BQ256XX_VINDPM_OFFSET_uV) /
860 BQ256XX_VINDPM_STEP_uV;
861
862 return regmap_update_bits(bq->regmap, BQ256XX_CHARGER_CONTROL_2,
863 BQ256XX_VINDPM_MASK, vindpm_reg_code);
864 }
865
bq256xx_get_input_curr_lim(struct bq256xx_device * bq)866 static int bq256xx_get_input_curr_lim(struct bq256xx_device *bq)
867 {
868 unsigned int input_current_limit;
869 unsigned int iindpm_reg_code;
870 int ret;
871
872 ret = regmap_read(bq->regmap, BQ256XX_INPUT_CURRENT_LIMIT,
873 &input_current_limit);
874 if (ret)
875 return ret;
876
877 iindpm_reg_code = input_current_limit & BQ256XX_IINDPM_MASK;
878
879 return (iindpm_reg_code * BQ256XX_IINDPM_STEP_uA) +
880 BQ256XX_IINDPM_OFFSET_uA;
881 }
882
bq256xx_set_input_curr_lim(struct bq256xx_device * bq,int iindpm)883 static int bq256xx_set_input_curr_lim(struct bq256xx_device *bq, int iindpm)
884 {
885 unsigned int iindpm_reg_code;
886
887 iindpm = clamp(iindpm, BQ256XX_IINDPM_MIN_uA, BQ256XX_IINDPM_MAX_uA);
888
889 iindpm_reg_code = (iindpm - BQ256XX_IINDPM_OFFSET_uA) /
890 BQ256XX_IINDPM_STEP_uA;
891
892 return regmap_update_bits(bq->regmap, BQ256XX_INPUT_CURRENT_LIMIT,
893 BQ256XX_IINDPM_MASK, iindpm_reg_code);
894 }
895
bq256xx_charger_reset(void * data)896 static void bq256xx_charger_reset(void *data)
897 {
898 struct bq256xx_device *bq = data;
899
900 regmap_update_bits(bq->regmap, BQ256XX_PART_INFORMATION,
901 BQ256XX_REG_RST, BQ256XX_REG_RST);
902
903 if (!IS_ERR_OR_NULL(bq->usb2_phy))
904 usb_unregister_notifier(bq->usb2_phy, &bq->usb_nb);
905
906 if (!IS_ERR_OR_NULL(bq->usb3_phy))
907 usb_unregister_notifier(bq->usb3_phy, &bq->usb_nb);
908 }
909
bq256xx_set_charger_property(struct power_supply * psy,enum power_supply_property prop,const union power_supply_propval * val)910 static int bq256xx_set_charger_property(struct power_supply *psy,
911 enum power_supply_property prop,
912 const union power_supply_propval *val)
913 {
914 struct bq256xx_device *bq = power_supply_get_drvdata(psy);
915 int ret = -EINVAL;
916
917 switch (prop) {
918 case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
919 ret = bq->chip_info->bq256xx_set_iindpm(bq, val->intval);
920 if (ret)
921 return ret;
922 break;
923
924 case POWER_SUPPLY_PROP_STATUS:
925 break;
926
927 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
928 ret = bq->chip_info->bq256xx_set_vbatreg(bq, val->intval);
929 if (ret)
930 return ret;
931 break;
932
933 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
934 ret = bq->chip_info->bq256xx_set_ichg(bq, val->intval);
935 if (ret)
936 return ret;
937 break;
938
939 case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
940 ret = bq->chip_info->bq256xx_set_iprechg(bq, val->intval);
941 if (ret)
942 return ret;
943 break;
944
945 case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
946 ret = bq->chip_info->bq256xx_set_iterm(bq, val->intval);
947 if (ret)
948 return ret;
949 break;
950
951 case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
952 ret = bq->chip_info->bq256xx_set_vindpm(bq, val->intval);
953 if (ret)
954 return ret;
955 break;
956
957 case POWER_SUPPLY_PROP_CHARGE_TYPE:
958 ret = bq->chip_info->bq256xx_set_charge_type(bq, val->intval);
959 if (ret)
960 return ret;
961 break;
962
963 default:
964 break;
965 }
966
967 return ret;
968 }
969
970
bq256xx_get_battery_property(struct power_supply * psy,enum power_supply_property psp,union power_supply_propval * val)971 static int bq256xx_get_battery_property(struct power_supply *psy,
972 enum power_supply_property psp,
973 union power_supply_propval *val)
974 {
975 struct bq256xx_device *bq = power_supply_get_drvdata(psy);
976
977 switch (psp) {
978 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
979 val->intval = bq->init_data.ichg_max;
980 break;
981
982 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
983 val->intval = bq->init_data.vbatreg_max;
984 break;
985
986 default:
987 return -EINVAL;
988 }
989
990 return 0;
991 }
992
bq256xx_get_charger_property(struct power_supply * psy,enum power_supply_property psp,union power_supply_propval * val)993 static int bq256xx_get_charger_property(struct power_supply *psy,
994 enum power_supply_property psp,
995 union power_supply_propval *val)
996 {
997 struct bq256xx_device *bq = power_supply_get_drvdata(psy);
998 struct bq256xx_state state;
999 int ret = 0;
1000
1001 mutex_lock(&bq->lock);
1002 ret = bq256xx_get_state(bq, &state);
1003 mutex_unlock(&bq->lock);
1004 if (ret)
1005 return ret;
1006
1007 switch (psp) {
1008 case POWER_SUPPLY_PROP_STATUS:
1009 if (state.vbus_stat == BQ256XX_VBUS_STAT_NO_INPUT ||
1010 state.vbus_stat == BQ256XX_VBUS_STAT_USB_OTG)
1011 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
1012 else if (state.chrg_stat == BQ256XX_CHRG_STAT_NOT_CHRGING)
1013 val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
1014 else if (state.chrg_stat == BQ256XX_CHRG_STAT_CHRG_TERM)
1015 val->intval = POWER_SUPPLY_STATUS_FULL;
1016 else
1017 val->intval = POWER_SUPPLY_STATUS_CHARGING;
1018 break;
1019
1020 case POWER_SUPPLY_PROP_HEALTH:
1021 val->intval = POWER_SUPPLY_HEALTH_UNKNOWN;
1022 if (state.wdt_fault) {
1023 val->intval =
1024 POWER_SUPPLY_HEALTH_WATCHDOG_TIMER_EXPIRE;
1025 } else if (state.bat_fault) {
1026 val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
1027 } else {
1028 switch (state.chrg_stat) {
1029 case BQ256XX_CHRG_FAULT_INPUT:
1030 val->intval =
1031 POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
1032 break;
1033 case BQ256XX_CHRG_FAULT_THERM:
1034 val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
1035 break;
1036 case BQ256XX_CHRG_FAULT_CST_EXPIRE:
1037 val->intval =
1038 POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE;
1039 break;
1040 default:
1041 break;
1042 }
1043
1044 switch (state.ntc_fault) {
1045 case BQ256XX_NTC_FAULT_WARM:
1046 val->intval = POWER_SUPPLY_HEALTH_WARM;
1047 break;
1048 case BQ256XX_NTC_FAULT_COOL:
1049 val->intval = POWER_SUPPLY_HEALTH_COOL;
1050 break;
1051 case BQ256XX_NTC_FAULT_COLD:
1052 val->intval = POWER_SUPPLY_HEALTH_COLD;
1053 break;
1054 case BQ256XX_NTC_FAULT_HOT:
1055 val->intval = POWER_SUPPLY_HEALTH_HOT;
1056 break;
1057 default:
1058 val->intval = POWER_SUPPLY_HEALTH_GOOD;
1059 break;
1060 }
1061 }
1062 break;
1063
1064 case POWER_SUPPLY_PROP_USB_TYPE:
1065 if (bq->chip_info->has_usb_detect) {
1066 switch (state.vbus_stat) {
1067 case BQ256XX_VBUS_STAT_USB_SDP:
1068 val->intval = POWER_SUPPLY_USB_TYPE_SDP;
1069 break;
1070 case BQ256XX_VBUS_STAT_USB_CDP:
1071 val->intval = POWER_SUPPLY_USB_TYPE_CDP;
1072 break;
1073 case BQ256XX_VBUS_STAT_USB_DCP:
1074 val->intval = POWER_SUPPLY_USB_TYPE_DCP;
1075 break;
1076 case BQ256XX_VBUS_STAT_USB_OTG:
1077 val->intval = POWER_SUPPLY_USB_TYPE_ACA;
1078 break;
1079 default:
1080 val->intval = POWER_SUPPLY_USB_TYPE_UNKNOWN;
1081 break;
1082 }
1083 } else {
1084 switch (state.vbus_stat) {
1085 case BQ256XX_VBUS_STAT_USB_SDP:
1086 val->intval = POWER_SUPPLY_USB_TYPE_SDP;
1087 break;
1088 case BQ256XX_VBUS_STAT_USB_OTG:
1089 val->intval = POWER_SUPPLY_USB_TYPE_ACA;
1090 break;
1091 default:
1092 val->intval = POWER_SUPPLY_USB_TYPE_UNKNOWN;
1093 break;
1094 }
1095 }
1096 break;
1097
1098 case POWER_SUPPLY_PROP_CHARGE_TYPE:
1099 switch (state.chrg_stat) {
1100 case BQ256XX_CHRG_STAT_NOT_CHRGING:
1101 val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;
1102 break;
1103 case BQ256XX_CHRG_STAT_PRECHRGING:
1104 val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
1105 break;
1106 case BQ256XX_CHRG_STAT_FAST_CHRGING:
1107 val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
1108 break;
1109 case BQ256XX_CHRG_STAT_CHRG_TERM:
1110 val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
1111 break;
1112 default:
1113 val->intval = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
1114 }
1115 break;
1116
1117 case POWER_SUPPLY_PROP_MANUFACTURER:
1118 val->strval = BQ256XX_MANUFACTURER;
1119 break;
1120
1121 case POWER_SUPPLY_PROP_MODEL_NAME:
1122 val->strval = bq->model_name;
1123 break;
1124
1125 case POWER_SUPPLY_PROP_ONLINE:
1126 val->intval = state.online;
1127 break;
1128
1129 case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
1130 ret = bq->chip_info->bq256xx_get_vindpm(bq);
1131 if (ret < 0)
1132 return ret;
1133 val->intval = ret;
1134 break;
1135
1136 case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
1137 ret = bq->chip_info->bq256xx_get_iindpm(bq);
1138 if (ret < 0)
1139 return ret;
1140 val->intval = ret;
1141 break;
1142
1143 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
1144 ret = bq->chip_info->bq256xx_get_vbatreg(bq);
1145 if (ret < 0)
1146 return ret;
1147 val->intval = ret;
1148 break;
1149
1150 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
1151 ret = bq->chip_info->bq256xx_get_ichg(bq);
1152 if (ret < 0)
1153 return ret;
1154 val->intval = ret;
1155 break;
1156
1157 case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
1158 ret = bq->chip_info->bq256xx_get_iprechg(bq);
1159 if (ret < 0)
1160 return ret;
1161 val->intval = ret;
1162 break;
1163
1164 case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
1165 ret = bq->chip_info->bq256xx_get_iterm(bq);
1166 if (ret < 0)
1167 return ret;
1168 val->intval = ret;
1169 break;
1170
1171 default:
1172 return -EINVAL;
1173 }
1174
1175 return ret;
1176 }
1177
bq256xx_state_changed(struct bq256xx_device * bq,struct bq256xx_state * new_state)1178 static bool bq256xx_state_changed(struct bq256xx_device *bq,
1179 struct bq256xx_state *new_state)
1180 {
1181 struct bq256xx_state old_state;
1182
1183 mutex_lock(&bq->lock);
1184 old_state = bq->state;
1185 mutex_unlock(&bq->lock);
1186
1187 return memcmp(&old_state, new_state, sizeof(struct bq256xx_state)) != 0;
1188 }
1189
bq256xx_irq_handler_thread(int irq,void * private)1190 static irqreturn_t bq256xx_irq_handler_thread(int irq, void *private)
1191 {
1192 struct bq256xx_device *bq = private;
1193 struct bq256xx_state state;
1194 int ret;
1195
1196 ret = bq256xx_get_state(bq, &state);
1197 if (ret < 0)
1198 goto irq_out;
1199
1200 if (!bq256xx_state_changed(bq, &state))
1201 goto irq_out;
1202
1203 mutex_lock(&bq->lock);
1204 bq->state = state;
1205 mutex_unlock(&bq->lock);
1206
1207 power_supply_changed(bq->charger);
1208
1209 irq_out:
1210 return IRQ_HANDLED;
1211 }
1212
1213 static enum power_supply_property bq256xx_power_supply_props[] = {
1214 POWER_SUPPLY_PROP_MANUFACTURER,
1215 POWER_SUPPLY_PROP_MODEL_NAME,
1216 POWER_SUPPLY_PROP_STATUS,
1217 POWER_SUPPLY_PROP_ONLINE,
1218 POWER_SUPPLY_PROP_HEALTH,
1219 POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT,
1220 POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
1221 POWER_SUPPLY_PROP_CHARGE_TYPE,
1222 POWER_SUPPLY_PROP_USB_TYPE,
1223 POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
1224 POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
1225 POWER_SUPPLY_PROP_PRECHARGE_CURRENT,
1226 POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT,
1227 };
1228
1229 static enum power_supply_property bq256xx_battery_props[] = {
1230 POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
1231 POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
1232 };
1233
bq256xx_property_is_writeable(struct power_supply * psy,enum power_supply_property prop)1234 static int bq256xx_property_is_writeable(struct power_supply *psy,
1235 enum power_supply_property prop)
1236 {
1237 switch (prop) {
1238 case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
1239 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
1240 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
1241 case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
1242 case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
1243 case POWER_SUPPLY_PROP_STATUS:
1244 case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
1245 case POWER_SUPPLY_PROP_CHARGE_TYPE:
1246 return true;
1247 default:
1248 return false;
1249 }
1250 }
1251
1252 static const struct power_supply_desc bq256xx_power_supply_desc = {
1253 .name = "bq256xx-charger",
1254 .type = POWER_SUPPLY_TYPE_USB,
1255 .usb_types = bq256xx_usb_type,
1256 .num_usb_types = ARRAY_SIZE(bq256xx_usb_type),
1257 .properties = bq256xx_power_supply_props,
1258 .num_properties = ARRAY_SIZE(bq256xx_power_supply_props),
1259 .get_property = bq256xx_get_charger_property,
1260 .set_property = bq256xx_set_charger_property,
1261 .property_is_writeable = bq256xx_property_is_writeable,
1262 };
1263
1264 static struct power_supply_desc bq256xx_battery_desc = {
1265 .name = "bq256xx-battery",
1266 .type = POWER_SUPPLY_TYPE_BATTERY,
1267 .get_property = bq256xx_get_battery_property,
1268 .properties = bq256xx_battery_props,
1269 .num_properties = ARRAY_SIZE(bq256xx_battery_props),
1270 .property_is_writeable = bq256xx_property_is_writeable,
1271 };
1272
1273
bq256xx_is_volatile_reg(struct device * dev,unsigned int reg)1274 static bool bq256xx_is_volatile_reg(struct device *dev, unsigned int reg)
1275 {
1276 switch (reg) {
1277 case BQ256XX_INPUT_CURRENT_LIMIT:
1278 case BQ256XX_CHARGER_STATUS_0...BQ256XX_CHARGER_STATUS_2:
1279 return true;
1280 default:
1281 return false;
1282 }
1283 }
1284
1285 static const struct regmap_config bq25600_regmap_config = {
1286 .reg_bits = 8,
1287 .val_bits = 8,
1288
1289 .max_register = BQ256XX_PART_INFORMATION,
1290 .reg_defaults = bq2560x_reg_defs,
1291 .num_reg_defaults = ARRAY_SIZE(bq2560x_reg_defs),
1292 .cache_type = REGCACHE_FLAT,
1293 .volatile_reg = bq256xx_is_volatile_reg,
1294 };
1295
1296 static const struct regmap_config bq25611d_regmap_config = {
1297 .reg_bits = 8,
1298 .val_bits = 8,
1299
1300 .max_register = BQ256XX_CHARGER_CONTROL_4,
1301 .reg_defaults = bq25611d_reg_defs,
1302 .num_reg_defaults = ARRAY_SIZE(bq25611d_reg_defs),
1303 .cache_type = REGCACHE_FLAT,
1304 .volatile_reg = bq256xx_is_volatile_reg,
1305 };
1306
1307 static const struct regmap_config bq25618_619_regmap_config = {
1308 .reg_bits = 8,
1309 .val_bits = 8,
1310
1311 .max_register = BQ256XX_CHARGER_CONTROL_4,
1312 .reg_defaults = bq25618_619_reg_defs,
1313 .num_reg_defaults = ARRAY_SIZE(bq25618_619_reg_defs),
1314 .cache_type = REGCACHE_FLAT,
1315 .volatile_reg = bq256xx_is_volatile_reg,
1316 };
1317
1318 static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = {
1319 [BQ25600] = {
1320 .model_id = BQ25600,
1321 .bq256xx_regmap_config = &bq25600_regmap_config,
1322 .bq256xx_get_ichg = bq256xx_get_ichg_curr,
1323 .bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
1324 .bq256xx_get_vbatreg = bq2560x_get_chrg_volt,
1325 .bq256xx_get_iterm = bq256xx_get_term_curr,
1326 .bq256xx_get_iprechg = bq256xx_get_prechrg_curr,
1327 .bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
1328 .bq256xx_set_ts_ignore = NULL,
1329
1330 .bq256xx_set_ichg = bq256xx_set_ichg_curr,
1331 .bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
1332 .bq256xx_set_vbatreg = bq2560x_set_chrg_volt,
1333 .bq256xx_set_iterm = bq256xx_set_term_curr,
1334 .bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
1335 .bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
1336 .bq256xx_set_charge_type = bq256xx_set_charge_type,
1337
1338 .bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA,
1339 .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
1340 .bq256xx_def_vbatreg = BQ2560X_VBATREG_DEF_uV,
1341 .bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA,
1342 .bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA,
1343 .bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
1344
1345 .bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA,
1346 .bq256xx_max_vbatreg = BQ2560X_VBATREG_MAX_uV,
1347
1348 .has_usb_detect = false,
1349 },
1350
1351 [BQ25600D] = {
1352 .model_id = BQ25600D,
1353 .bq256xx_regmap_config = &bq25600_regmap_config,
1354 .bq256xx_get_ichg = bq256xx_get_ichg_curr,
1355 .bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
1356 .bq256xx_get_vbatreg = bq2560x_get_chrg_volt,
1357 .bq256xx_get_iterm = bq256xx_get_term_curr,
1358 .bq256xx_get_iprechg = bq256xx_get_prechrg_curr,
1359 .bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
1360
1361 .bq256xx_set_ichg = bq256xx_set_ichg_curr,
1362 .bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
1363 .bq256xx_set_vbatreg = bq2560x_set_chrg_volt,
1364 .bq256xx_set_iterm = bq256xx_set_term_curr,
1365 .bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
1366 .bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
1367 .bq256xx_set_charge_type = bq256xx_set_charge_type,
1368 .bq256xx_set_ts_ignore = NULL,
1369
1370 .bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA,
1371 .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
1372 .bq256xx_def_vbatreg = BQ2560X_VBATREG_DEF_uV,
1373 .bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA,
1374 .bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA,
1375 .bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
1376
1377 .bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA,
1378 .bq256xx_max_vbatreg = BQ2560X_VBATREG_MAX_uV,
1379
1380 .has_usb_detect = true,
1381 },
1382
1383 [BQ25601] = {
1384 .model_id = BQ25601,
1385 .bq256xx_regmap_config = &bq25600_regmap_config,
1386 .bq256xx_get_ichg = bq256xx_get_ichg_curr,
1387 .bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
1388 .bq256xx_get_vbatreg = bq2560x_get_chrg_volt,
1389 .bq256xx_get_iterm = bq256xx_get_term_curr,
1390 .bq256xx_get_iprechg = bq256xx_get_prechrg_curr,
1391 .bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
1392
1393 .bq256xx_set_ichg = bq256xx_set_ichg_curr,
1394 .bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
1395 .bq256xx_set_vbatreg = bq2560x_set_chrg_volt,
1396 .bq256xx_set_iterm = bq256xx_set_term_curr,
1397 .bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
1398 .bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
1399 .bq256xx_set_charge_type = bq256xx_set_charge_type,
1400 .bq256xx_set_ts_ignore = NULL,
1401
1402 .bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA,
1403 .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
1404 .bq256xx_def_vbatreg = BQ2560X_VBATREG_DEF_uV,
1405 .bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA,
1406 .bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA,
1407 .bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
1408
1409 .bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA,
1410 .bq256xx_max_vbatreg = BQ2560X_VBATREG_MAX_uV,
1411
1412 .has_usb_detect = false,
1413 },
1414
1415 [BQ25601D] = {
1416 .model_id = BQ25601D,
1417 .bq256xx_regmap_config = &bq25600_regmap_config,
1418 .bq256xx_get_ichg = bq256xx_get_ichg_curr,
1419 .bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
1420 .bq256xx_get_vbatreg = bq25601d_get_chrg_volt,
1421 .bq256xx_get_iterm = bq256xx_get_term_curr,
1422 .bq256xx_get_iprechg = bq256xx_get_prechrg_curr,
1423 .bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
1424
1425 .bq256xx_set_ichg = bq256xx_set_ichg_curr,
1426 .bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
1427 .bq256xx_set_vbatreg = bq25601d_set_chrg_volt,
1428 .bq256xx_set_iterm = bq256xx_set_term_curr,
1429 .bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
1430 .bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
1431 .bq256xx_set_charge_type = bq256xx_set_charge_type,
1432 .bq256xx_set_ts_ignore = NULL,
1433
1434 .bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA,
1435 .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
1436 .bq256xx_def_vbatreg = BQ2560X_VBATREG_DEF_uV,
1437 .bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA,
1438 .bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA,
1439 .bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
1440
1441 .bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA,
1442 .bq256xx_max_vbatreg = BQ2560X_VBATREG_MAX_uV,
1443
1444 .has_usb_detect = true,
1445 },
1446
1447 [BQ25611D] = {
1448 .model_id = BQ25611D,
1449 .bq256xx_regmap_config = &bq25611d_regmap_config,
1450 .bq256xx_get_ichg = bq256xx_get_ichg_curr,
1451 .bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
1452 .bq256xx_get_vbatreg = bq25611d_get_chrg_volt,
1453 .bq256xx_get_iterm = bq256xx_get_term_curr,
1454 .bq256xx_get_iprechg = bq256xx_get_prechrg_curr,
1455 .bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
1456
1457 .bq256xx_set_ichg = bq256xx_set_ichg_curr,
1458 .bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
1459 .bq256xx_set_vbatreg = bq25611d_set_chrg_volt,
1460 .bq256xx_set_iterm = bq256xx_set_term_curr,
1461 .bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
1462 .bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
1463 .bq256xx_set_charge_type = bq256xx_set_charge_type,
1464 .bq256xx_set_ts_ignore = bq256xx_set_ts_ignore,
1465
1466 .bq256xx_def_ichg = BQ25611D_ICHG_DEF_uA,
1467 .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
1468 .bq256xx_def_vbatreg = BQ25611D_VBATREG_DEF_uV,
1469 .bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA,
1470 .bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA,
1471 .bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
1472
1473 .bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA,
1474 .bq256xx_max_vbatreg = BQ25611D_VBATREG_MAX_uV,
1475
1476 .has_usb_detect = true,
1477 },
1478
1479 [BQ25618] = {
1480 .model_id = BQ25618,
1481 .bq256xx_regmap_config = &bq25618_619_regmap_config,
1482 .bq256xx_get_ichg = bq25618_619_get_ichg_curr,
1483 .bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
1484 .bq256xx_get_vbatreg = bq25618_619_get_chrg_volt,
1485 .bq256xx_get_iterm = bq25618_619_get_term_curr,
1486 .bq256xx_get_iprechg = bq25618_619_get_prechrg_curr,
1487 .bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
1488
1489 .bq256xx_set_ichg = bq25618_619_set_ichg_curr,
1490 .bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
1491 .bq256xx_set_vbatreg = bq25618_619_set_chrg_volt,
1492 .bq256xx_set_iterm = bq25618_619_set_term_curr,
1493 .bq256xx_set_iprechg = bq25618_619_set_prechrg_curr,
1494 .bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
1495 .bq256xx_set_charge_type = bq256xx_set_charge_type,
1496 .bq256xx_set_ts_ignore = bq256xx_set_ts_ignore,
1497
1498 .bq256xx_def_ichg = BQ25618_ICHG_DEF_uA,
1499 .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
1500 .bq256xx_def_vbatreg = BQ25618_VBATREG_DEF_uV,
1501 .bq256xx_def_iterm = BQ25618_ITERM_DEF_uA,
1502 .bq256xx_def_iprechg = BQ25618_IPRECHG_DEF_uA,
1503 .bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
1504
1505 .bq256xx_max_ichg = BQ25618_ICHG_MAX_uA,
1506 .bq256xx_max_vbatreg = BQ25618_VBATREG_MAX_uV,
1507
1508 .has_usb_detect = false,
1509 },
1510
1511 [BQ25619] = {
1512 .model_id = BQ25619,
1513 .bq256xx_regmap_config = &bq25618_619_regmap_config,
1514 .bq256xx_get_ichg = bq25618_619_get_ichg_curr,
1515 .bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
1516 .bq256xx_get_vbatreg = bq25618_619_get_chrg_volt,
1517 .bq256xx_get_iterm = bq25618_619_get_term_curr,
1518 .bq256xx_get_iprechg = bq25618_619_get_prechrg_curr,
1519 .bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
1520
1521 .bq256xx_set_ichg = bq25618_619_set_ichg_curr,
1522 .bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
1523 .bq256xx_set_vbatreg = bq25618_619_set_chrg_volt,
1524 .bq256xx_set_iterm = bq25618_619_set_term_curr,
1525 .bq256xx_set_iprechg = bq25618_619_set_prechrg_curr,
1526 .bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
1527 .bq256xx_set_charge_type = bq256xx_set_charge_type,
1528 .bq256xx_set_ts_ignore = bq256xx_set_ts_ignore,
1529
1530 .bq256xx_def_ichg = BQ25618_ICHG_DEF_uA,
1531 .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
1532 .bq256xx_def_vbatreg = BQ25618_VBATREG_DEF_uV,
1533 .bq256xx_def_iterm = BQ25618_ITERM_DEF_uA,
1534 .bq256xx_def_iprechg = BQ25618_IPRECHG_DEF_uA,
1535 .bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
1536
1537 .bq256xx_max_ichg = BQ25618_ICHG_MAX_uA,
1538 .bq256xx_max_vbatreg = BQ25618_VBATREG_MAX_uV,
1539
1540 .has_usb_detect = false,
1541 },
1542 };
1543
bq256xx_power_supply_init(struct bq256xx_device * bq,struct power_supply_config * psy_cfg,struct device * dev)1544 static int bq256xx_power_supply_init(struct bq256xx_device *bq,
1545 struct power_supply_config *psy_cfg, struct device *dev)
1546 {
1547 bq->charger = devm_power_supply_register(bq->dev,
1548 &bq256xx_power_supply_desc,
1549 psy_cfg);
1550 if (IS_ERR(bq->charger)) {
1551 dev_err(dev, "power supply register charger failed\n");
1552 return PTR_ERR(bq->charger);
1553 }
1554
1555 bq->battery = devm_power_supply_register(bq->dev,
1556 &bq256xx_battery_desc,
1557 psy_cfg);
1558 if (IS_ERR(bq->battery)) {
1559 dev_err(dev, "power supply register battery failed\n");
1560 return PTR_ERR(bq->battery);
1561 }
1562 return 0;
1563 }
1564
bq256xx_hw_init(struct bq256xx_device * bq)1565 static int bq256xx_hw_init(struct bq256xx_device *bq)
1566 {
1567 struct power_supply_battery_info *bat_info;
1568 int wd_reg_val = BQ256XX_WATCHDOG_DIS;
1569 int ret = 0;
1570 int i;
1571
1572 for (i = 0; i < BQ256XX_NUM_WD_VAL; i++) {
1573 if (bq->watchdog_timer == bq256xx_watchdog_time[i]) {
1574 wd_reg_val = i;
1575 break;
1576 }
1577 if (i + 1 < BQ256XX_NUM_WD_VAL &&
1578 bq->watchdog_timer > bq256xx_watchdog_time[i] &&
1579 bq->watchdog_timer < bq256xx_watchdog_time[i + 1])
1580 wd_reg_val = i;
1581 }
1582 ret = regmap_update_bits(bq->regmap, BQ256XX_CHARGER_CONTROL_1,
1583 BQ256XX_WATCHDOG_MASK, wd_reg_val <<
1584 BQ256XX_WDT_BIT_SHIFT);
1585 if (ret)
1586 return ret;
1587
1588 ret = power_supply_get_battery_info(bq->charger, &bat_info);
1589 if (ret == -ENOMEM)
1590 return ret;
1591
1592 if (ret) {
1593 dev_warn(bq->dev, "battery info missing, default values will be applied\n");
1594
1595 bat_info->constant_charge_current_max_ua =
1596 bq->chip_info->bq256xx_def_ichg;
1597
1598 bat_info->constant_charge_voltage_max_uv =
1599 bq->chip_info->bq256xx_def_vbatreg;
1600
1601 bat_info->precharge_current_ua =
1602 bq->chip_info->bq256xx_def_iprechg;
1603
1604 bat_info->charge_term_current_ua =
1605 bq->chip_info->bq256xx_def_iterm;
1606
1607 bq->init_data.ichg_max =
1608 bq->chip_info->bq256xx_max_ichg;
1609
1610 bq->init_data.vbatreg_max =
1611 bq->chip_info->bq256xx_max_vbatreg;
1612 } else {
1613 bq->init_data.ichg_max =
1614 bat_info->constant_charge_current_max_ua;
1615
1616 bq->init_data.vbatreg_max =
1617 bat_info->constant_charge_voltage_max_uv;
1618 }
1619
1620 ret = bq->chip_info->bq256xx_set_vindpm(bq, bq->init_data.vindpm);
1621 if (ret)
1622 return ret;
1623
1624 ret = bq->chip_info->bq256xx_set_iindpm(bq, bq->init_data.iindpm);
1625 if (ret)
1626 return ret;
1627
1628 ret = bq->chip_info->bq256xx_set_ichg(bq,
1629 bq->chip_info->bq256xx_def_ichg);
1630 if (ret)
1631 return ret;
1632
1633 ret = bq->chip_info->bq256xx_set_iprechg(bq,
1634 bat_info->precharge_current_ua);
1635 if (ret)
1636 return ret;
1637
1638 ret = bq->chip_info->bq256xx_set_vbatreg(bq,
1639 bq->chip_info->bq256xx_def_vbatreg);
1640 if (ret)
1641 return ret;
1642
1643 ret = bq->chip_info->bq256xx_set_iterm(bq,
1644 bat_info->charge_term_current_ua);
1645 if (ret)
1646 return ret;
1647
1648 if (bq->chip_info->bq256xx_set_ts_ignore) {
1649 ret = bq->chip_info->bq256xx_set_ts_ignore(bq, bq->init_data.ts_ignore);
1650 if (ret)
1651 return ret;
1652 }
1653
1654 power_supply_put_battery_info(bq->charger, bat_info);
1655
1656 return 0;
1657 }
1658
bq256xx_parse_dt(struct bq256xx_device * bq,struct power_supply_config * psy_cfg,struct device * dev)1659 static int bq256xx_parse_dt(struct bq256xx_device *bq,
1660 struct power_supply_config *psy_cfg, struct device *dev)
1661 {
1662 int ret = 0;
1663
1664 psy_cfg->drv_data = bq;
1665 psy_cfg->of_node = dev->of_node;
1666
1667 ret = device_property_read_u32(bq->dev, "ti,watchdog-timeout-ms",
1668 &bq->watchdog_timer);
1669 if (ret)
1670 bq->watchdog_timer = BQ256XX_WATCHDOG_DIS;
1671
1672 if (bq->watchdog_timer > BQ256XX_WATCHDOG_MAX ||
1673 bq->watchdog_timer < BQ256XX_WATCHDOG_DIS)
1674 return -EINVAL;
1675
1676 ret = device_property_read_u32(bq->dev,
1677 "input-voltage-limit-microvolt",
1678 &bq->init_data.vindpm);
1679 if (ret)
1680 bq->init_data.vindpm = bq->chip_info->bq256xx_def_vindpm;
1681
1682 ret = device_property_read_u32(bq->dev,
1683 "input-current-limit-microamp",
1684 &bq->init_data.iindpm);
1685 if (ret)
1686 bq->init_data.iindpm = bq->chip_info->bq256xx_def_iindpm;
1687
1688 bq->init_data.ts_ignore = device_property_read_bool(bq->dev, "ti,no-thermistor");
1689
1690 return 0;
1691 }
1692
bq256xx_probe(struct i2c_client * client)1693 static int bq256xx_probe(struct i2c_client *client)
1694 {
1695 const struct i2c_device_id *id = i2c_client_get_device_id(client);
1696 struct device *dev = &client->dev;
1697 struct bq256xx_device *bq;
1698 struct power_supply_config psy_cfg = { };
1699
1700 int ret;
1701
1702 bq = devm_kzalloc(dev, sizeof(*bq), GFP_KERNEL);
1703 if (!bq)
1704 return -ENOMEM;
1705
1706 bq->client = client;
1707 bq->dev = dev;
1708 bq->chip_info = &bq256xx_chip_info_tbl[id->driver_data];
1709
1710 mutex_init(&bq->lock);
1711
1712 strncpy(bq->model_name, id->name, I2C_NAME_SIZE);
1713
1714 bq->regmap = devm_regmap_init_i2c(client,
1715 bq->chip_info->bq256xx_regmap_config);
1716
1717 if (IS_ERR(bq->regmap)) {
1718 dev_err(dev, "Failed to allocate register map\n");
1719 return PTR_ERR(bq->regmap);
1720 }
1721
1722 i2c_set_clientdata(client, bq);
1723
1724 ret = bq256xx_parse_dt(bq, &psy_cfg, dev);
1725 if (ret) {
1726 dev_err(dev, "Failed to read device tree properties%d\n", ret);
1727 return ret;
1728 }
1729
1730 ret = devm_add_action_or_reset(dev, bq256xx_charger_reset, bq);
1731 if (ret)
1732 return ret;
1733
1734 /* OTG reporting */
1735 bq->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);
1736 if (!IS_ERR_OR_NULL(bq->usb2_phy)) {
1737 INIT_WORK(&bq->usb_work, bq256xx_usb_work);
1738 bq->usb_nb.notifier_call = bq256xx_usb_notifier;
1739 usb_register_notifier(bq->usb2_phy, &bq->usb_nb);
1740 }
1741
1742 bq->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3);
1743 if (!IS_ERR_OR_NULL(bq->usb3_phy)) {
1744 INIT_WORK(&bq->usb_work, bq256xx_usb_work);
1745 bq->usb_nb.notifier_call = bq256xx_usb_notifier;
1746 usb_register_notifier(bq->usb3_phy, &bq->usb_nb);
1747 }
1748
1749 if (client->irq) {
1750 ret = devm_request_threaded_irq(dev, client->irq, NULL,
1751 bq256xx_irq_handler_thread,
1752 IRQF_TRIGGER_FALLING |
1753 IRQF_ONESHOT,
1754 dev_name(&client->dev), bq);
1755 if (ret < 0) {
1756 dev_err(dev, "get irq fail: %d\n", ret);
1757 return ret;
1758 }
1759 }
1760
1761 ret = bq256xx_power_supply_init(bq, &psy_cfg, dev);
1762 if (ret) {
1763 dev_err(dev, "Failed to register power supply\n");
1764 return ret;
1765 }
1766
1767 ret = bq256xx_hw_init(bq);
1768 if (ret) {
1769 dev_err(dev, "Cannot initialize the chip.\n");
1770 return ret;
1771 }
1772
1773 return ret;
1774 }
1775
1776 static const struct i2c_device_id bq256xx_i2c_ids[] = {
1777 { "bq25600", BQ25600 },
1778 { "bq25600d", BQ25600D },
1779 { "bq25601", BQ25601 },
1780 { "bq25601d", BQ25601D },
1781 { "bq25611d", BQ25611D },
1782 { "bq25618", BQ25618 },
1783 { "bq25619", BQ25619 },
1784 {},
1785 };
1786 MODULE_DEVICE_TABLE(i2c, bq256xx_i2c_ids);
1787
1788 static const struct of_device_id bq256xx_of_match[] = {
1789 { .compatible = "ti,bq25600", .data = (void *)BQ25600 },
1790 { .compatible = "ti,bq25600d", .data = (void *)BQ25600D },
1791 { .compatible = "ti,bq25601", .data = (void *)BQ25601 },
1792 { .compatible = "ti,bq25601d", .data = (void *)BQ25601D },
1793 { .compatible = "ti,bq25611d", .data = (void *)BQ25611D },
1794 { .compatible = "ti,bq25618", .data = (void *)BQ25618 },
1795 { .compatible = "ti,bq25619", .data = (void *)BQ25619 },
1796 { },
1797 };
1798 MODULE_DEVICE_TABLE(of, bq256xx_of_match);
1799
1800 static const struct acpi_device_id bq256xx_acpi_match[] = {
1801 { "bq25600", BQ25600 },
1802 { "bq25600d", BQ25600D },
1803 { "bq25601", BQ25601 },
1804 { "bq25601d", BQ25601D },
1805 { "bq25611d", BQ25611D },
1806 { "bq25618", BQ25618 },
1807 { "bq25619", BQ25619 },
1808 {},
1809 };
1810 MODULE_DEVICE_TABLE(acpi, bq256xx_acpi_match);
1811
1812 static struct i2c_driver bq256xx_driver = {
1813 .driver = {
1814 .name = "bq256xx-charger",
1815 .of_match_table = bq256xx_of_match,
1816 .acpi_match_table = bq256xx_acpi_match,
1817 },
1818 .probe = bq256xx_probe,
1819 .id_table = bq256xx_i2c_ids,
1820 };
1821 module_i2c_driver(bq256xx_driver);
1822
1823 MODULE_AUTHOR("Ricardo Rivera-Matos <r-rivera-matos@ti.com>");
1824 MODULE_DESCRIPTION("bq256xx charger driver");
1825 MODULE_LICENSE("GPL v2");
1826