1 | // SPDX-License-Identifier: GPL-2.0 |
2 | // BQ2515X Battery Charger Driver |
3 | // Copyright (C) 2020 Texas Instruments Incorporated - https://www.ti.com/ |
4 | |
5 | #include <linux/err.h> |
6 | #include <linux/i2c.h> |
7 | #include <linux/init.h> |
8 | #include <linux/kernel.h> |
9 | #include <linux/module.h> |
10 | #include <linux/gpio/consumer.h> |
11 | #include <linux/power_supply.h> |
12 | #include <linux/regmap.h> |
13 | #include <linux/types.h> |
14 | |
15 | #define BQ2515X_MANUFACTURER "Texas Instruments" |
16 | |
17 | #define BQ2515X_STAT0 0x00 |
18 | #define BQ2515X_STAT1 0x01 |
19 | #define BQ2515X_STAT2 0x02 |
20 | #define BQ2515X_FLAG0 0x03 |
21 | #define BQ2515X_FLAG1 0x04 |
22 | #define BQ2515X_FLAG2 0x05 |
23 | #define BQ2515X_FLAG3 0x06 |
24 | #define BQ2515X_MASK0 0x07 |
25 | #define BQ2515X_MASK1 0x08 |
26 | #define BQ2515X_MASK2 0x09 |
27 | #define BQ2515X_MASK3 0x0a |
28 | #define BQ2515X_VBAT_CTRL 0x12 |
29 | #define BQ2515X_ICHG_CTRL 0x13 |
30 | #define BQ2515X_PCHRGCTRL 0x14 |
31 | #define BQ2515X_TERMCTRL 0x15 |
32 | #define BQ2515X_BUVLO 0x16 |
33 | #define BQ2515X_CHARGERCTRL0 0x17 |
34 | #define BQ2515X_CHARGERCTRL1 0x18 |
35 | #define BQ2515X_ILIMCTRL 0x19 |
36 | #define BQ2515X_LDOCTRL 0x1d |
37 | #define BQ2515X_MRCTRL 0x30 |
38 | #define BQ2515X_ICCTRL0 0x35 |
39 | #define BQ2515X_ICCTRL1 0x36 |
40 | #define BQ2515X_ICCTRL2 0x37 |
41 | #define BQ2515X_ADCCTRL0 0x40 |
42 | #define BQ2515X_ADCCTRL1 0x41 |
43 | #define BQ2515X_ADC_VBAT_M 0x42 |
44 | #define BQ2515X_ADC_VBAT_L 0x43 |
45 | #define BQ2515X_ADC_TS_M 0x44 |
46 | #define BQ2515X_ADC_TS_L 0x45 |
47 | #define BQ2515X_ADC_ICHG_M 0x46 |
48 | #define BQ2515X_ADC_ICHG_L 0x47 |
49 | #define BQ2515X_ADC_ADCIN_M 0x48 |
50 | #define BQ2515X_ADC_ADCIN_L 0x49 |
51 | #define BQ2515X_ADC_VIN_M 0x4a |
52 | #define BQ2515X_ADC_VIN_L 0x4b |
53 | #define BQ2515X_ADC_PMID_M 0x4c |
54 | #define BQ2515X_ADC_PMID_L 0x4d |
55 | #define BQ2515X_ADC_IIN_M 0x4e |
56 | #define BQ2515X_ADC_IIN_L 0x4f |
57 | #define BQ2515X_ADC_COMP1_M 0x52 |
58 | #define BQ2515X_ADC_COMP1_L 0X53 |
59 | #define BQ2515X_ADC_COMP2_M 0X54 |
60 | #define BQ2515X_ADC_COMP2_L 0x55 |
61 | #define BQ2515X_ADC_COMP3_M 0x56 |
62 | #define BQ2515X_ADC_COMP3_L 0x57 |
63 | #define BQ2515X_ADC_READ_EN 0x58 |
64 | #define BQ2515X_TS_FASTCHGCTRL 0x61 |
65 | #define BQ2515X_TS_COLD 0x62 |
66 | #define BQ2515X_TS_COOL 0x63 |
67 | #define BQ2515X_TS_WARM 0x64 |
68 | #define BQ2515X_TS_HOT 0x65 |
69 | #define BQ2515X_DEVICE_ID 0x6f |
70 | |
71 | #define BQ2515X_DEFAULT_ICHG_UA 10000 |
72 | #define BQ25150_DEFAULT_ILIM_UA 100000 |
73 | #define BQ25155_DEFAULT_ILIM_UA 500000 |
74 | #define BQ2515X_DEFAULT_VBAT_REG_UV 4200000 |
75 | #define BQ2515X_DEFAULT_IPRECHARGE_UA 2500 |
76 | |
77 | #define BQ2515X_DIVISOR 65536 |
78 | #define BQ2515X_VBAT_BASE_VOLT 3600000 |
79 | #define BQ2515X_VBAT_REG_MAX 4600000 |
80 | #define BQ2515X_VBAT_REG_MIN 3600000 |
81 | #define BQ2515X_VBAT_STEP_UV 10000 |
82 | #define BQ2515X_UV_FACTOR 1000000 |
83 | #define BQ2515X_VBAT_MULTIPLIER 6 |
84 | #define BQ2515X_ICHG_DIVISOR 52429 |
85 | #define BQ2515X_ICHG_CURR_STEP_THRESH_UA 318750 |
86 | #define BQ2515X_ICHG_MIN_UA 0 |
87 | #define BQ2515X_ICHG_MAX_UA 500000 |
88 | #define BQ2515X_ICHG_RNG_1B0_UA 1250 |
89 | #define BQ2515X_ICHG_RNG_1B1_UA 2500 |
90 | #define BQ2515X_VLOWV_SEL_1B0_UV 3000000 |
91 | #define BQ2515X_VLOWV_SEL_1B1_UV 2800000 |
92 | #define BQ2515X_PRECHRG_ICHRG_RNGE_1875_UA 18750 |
93 | #define BQ2515X_PRECHRG_ICHRG_RNGE_3750_UA 37500 |
94 | #define BQ2515X_TWAKE2_MIN_US 1700000 |
95 | #define BQ2515X_TWAKE2_MAX_US 2300000 |
96 | |
97 | #define BQ2515X_ILIM_150MA 0x2 |
98 | #define BQ2515X_ILIM_MASK 0x7 |
99 | #define BQ2515X_ILIM_MIN 50000 |
100 | #define BQ2515X_ILIM_MAX 600000 |
101 | #define BQ2515X_HEALTH_MASK 0xf |
102 | #define BQ2515X_ICHGRNG_MASK 0x80 |
103 | #define BQ2515X_STAT0_MASK 0x0f |
104 | #define BQ2515X_STAT1_MASK 0x1f |
105 | #define BQ2515X_PRECHARGE_MASK 0x1f |
106 | |
107 | #define BQ2515X_TS_HOT_STAT BIT(0) |
108 | #define BQ2515X_TS_WARM_STAT BIT(1) |
109 | #define BQ2515X_TS_COOL_STAT BIT(2) |
110 | #define BQ2515X_TS_COLD_STAT BIT(3) |
111 | #define BQ2515X_SAFETY_TIMER_EXP BIT(5) |
112 | |
113 | #define BQ2515X_EN_VBAT_READ BIT(3) |
114 | #define BQ2515X_EN_ICHG_READ BIT(5) |
115 | |
116 | #define BQ2515X_VIN_GOOD BIT(0) |
117 | #define BQ2515X_CHRG_DONE BIT(5) |
118 | #define BQ2515X_CV_CHRG_MODE BIT(6) |
119 | |
120 | #define BQ2515X_VIN_OVP_FAULT_STAT BIT(7) |
121 | |
122 | #define BQ2515X_WATCHDOG_DISABLE BIT(4) |
123 | |
124 | #define BQ2515X_ICHARGE_RANGE BIT(7) |
125 | |
126 | #define BQ2515X_VLOWV_SEL BIT(5) |
127 | |
128 | #define BQ2515X_CHARGER_DISABLE BIT(0) |
129 | |
130 | #define BQ2515X_HWRESET_14S_WD BIT(1) |
131 | |
132 | static const int bq2515x_ilim_lvl_values[] = { |
133 | 50000, 100000, 150000, 200000, 300000, 400000, 500000, 600000 |
134 | }; |
135 | |
136 | /** |
137 | * struct bq2515x_init_data - |
138 | * @ilim: input current limit |
139 | * @ichg: fast charge current |
140 | * @vbatreg: battery regulation voltage |
141 | * @iprechg: precharge current |
142 | */ |
143 | struct bq2515x_init_data { |
144 | int ilim; |
145 | int ichg; |
146 | int vbatreg; |
147 | int iprechg; |
148 | }; |
149 | |
150 | /** |
151 | * struct bq2515x_info - |
152 | * @regmap_config: register map config |
153 | * @ilim: input current limit |
154 | */ |
155 | struct bq2515x_info { |
156 | const struct regmap_config *regmap_config; |
157 | int ilim; |
158 | }; |
159 | |
160 | /** |
161 | * struct bq2515x_device - |
162 | * @mains: mains properties |
163 | * @battery: battery properties |
164 | * @regmap: register map structure |
165 | * @dev: device structure |
166 | * |
167 | * @reset_gpio: manual reset (MR) pin |
168 | * @powerdown_gpio: low power mode pin |
169 | * @ac_detect_gpio: power good (PG) pin |
170 | * @ce_gpio: charge enable (CE) pin |
171 | * |
172 | * @info: device info |
173 | * @model_name: string value describing device model |
174 | * @mains_online: boolean value indicating power supply online |
175 | * |
176 | * @init_data: charger initialization data structure |
177 | */ |
178 | struct bq2515x_device { |
179 | struct power_supply *mains; |
180 | struct power_supply *battery; |
181 | struct regmap *regmap; |
182 | struct device *dev; |
183 | |
184 | struct gpio_desc *reset_gpio; |
185 | struct gpio_desc *powerdown_gpio; |
186 | struct gpio_desc *ac_detect_gpio; |
187 | struct gpio_desc *ce_gpio; |
188 | |
189 | const struct bq2515x_info *info; |
190 | char model_name[I2C_NAME_SIZE]; |
191 | bool mains_online; |
192 | |
193 | struct bq2515x_init_data init_data; |
194 | }; |
195 | |
196 | static const struct reg_default bq25150_reg_defaults[] = { |
197 | {BQ2515X_FLAG0, 0x0}, |
198 | {BQ2515X_FLAG1, 0x0}, |
199 | {BQ2515X_FLAG2, 0x0}, |
200 | {BQ2515X_FLAG3, 0x0}, |
201 | {BQ2515X_MASK0, 0x0}, |
202 | {BQ2515X_MASK1, 0x0}, |
203 | {BQ2515X_MASK2, 0x71}, |
204 | {BQ2515X_MASK3, 0x0}, |
205 | {BQ2515X_VBAT_CTRL, 0x3C}, |
206 | {BQ2515X_ICHG_CTRL, 0x8}, |
207 | {BQ2515X_PCHRGCTRL, 0x2}, |
208 | {BQ2515X_TERMCTRL, 0x14}, |
209 | {BQ2515X_BUVLO, 0x0}, |
210 | {BQ2515X_CHARGERCTRL0, 0x82}, |
211 | {BQ2515X_CHARGERCTRL1, 0x42}, |
212 | {BQ2515X_ILIMCTRL, 0x1}, |
213 | {BQ2515X_LDOCTRL, 0xB0}, |
214 | {BQ2515X_MRCTRL, 0x2A}, |
215 | {BQ2515X_ICCTRL0, 0x10}, |
216 | {BQ2515X_ICCTRL1, 0x0}, |
217 | {BQ2515X_ICCTRL2, 0x0}, |
218 | {BQ2515X_ADCCTRL0, 0x2}, |
219 | {BQ2515X_ADCCTRL1, 0x40}, |
220 | {BQ2515X_ADC_COMP1_M, 0x23}, |
221 | {BQ2515X_ADC_COMP1_L, 0x20}, |
222 | {BQ2515X_ADC_COMP2_M, 0x38}, |
223 | {BQ2515X_ADC_COMP2_L, 0x90}, |
224 | {BQ2515X_ADC_COMP3_M, 0x0}, |
225 | {BQ2515X_ADC_COMP3_L, 0x0}, |
226 | {BQ2515X_ADC_READ_EN, 0x0}, |
227 | {BQ2515X_TS_FASTCHGCTRL, 0x34}, |
228 | {BQ2515X_TS_COLD, 0x7C}, |
229 | {BQ2515X_TS_COOL, 0x6D}, |
230 | {BQ2515X_TS_WARM, 0x38}, |
231 | {BQ2515X_TS_HOT, 0x27}, |
232 | {BQ2515X_DEVICE_ID, 0x20}, |
233 | }; |
234 | |
235 | static const struct reg_default bq25155_reg_defaults[] = { |
236 | {BQ2515X_FLAG0, 0x0}, |
237 | {BQ2515X_FLAG1, 0x0}, |
238 | {BQ2515X_FLAG2, 0x0}, |
239 | {BQ2515X_FLAG3, 0x0}, |
240 | {BQ2515X_MASK0, 0x0}, |
241 | {BQ2515X_MASK1, 0x0}, |
242 | {BQ2515X_MASK2, 0x71}, |
243 | {BQ2515X_MASK3, 0x0}, |
244 | {BQ2515X_VBAT_CTRL, 0x3C}, |
245 | {BQ2515X_ICHG_CTRL, 0x8}, |
246 | {BQ2515X_PCHRGCTRL, 0x2}, |
247 | {BQ2515X_TERMCTRL, 0x14}, |
248 | {BQ2515X_BUVLO, 0x0}, |
249 | {BQ2515X_CHARGERCTRL0, 0x82}, |
250 | {BQ2515X_CHARGERCTRL1, 0xC2}, |
251 | {BQ2515X_ILIMCTRL, 0x6}, |
252 | {BQ2515X_LDOCTRL, 0xB0}, |
253 | {BQ2515X_MRCTRL, 0x2A}, |
254 | {BQ2515X_ICCTRL0, 0x10}, |
255 | {BQ2515X_ICCTRL1, 0x0}, |
256 | {BQ2515X_ICCTRL2, 0x40}, |
257 | {BQ2515X_ADCCTRL0, 0x2}, |
258 | {BQ2515X_ADCCTRL1, 0x40}, |
259 | {BQ2515X_ADC_COMP1_M, 0x23}, |
260 | {BQ2515X_ADC_COMP1_L, 0x20}, |
261 | {BQ2515X_ADC_COMP2_M, 0x38}, |
262 | {BQ2515X_ADC_COMP2_L, 0x90}, |
263 | {BQ2515X_ADC_COMP3_M, 0x0}, |
264 | {BQ2515X_ADC_COMP3_L, 0x0}, |
265 | {BQ2515X_ADC_READ_EN, 0x0}, |
266 | {BQ2515X_TS_FASTCHGCTRL, 0x34}, |
267 | {BQ2515X_TS_COLD, 0x7C}, |
268 | {BQ2515X_TS_COOL, 0x6D}, |
269 | {BQ2515X_TS_WARM, 0x38}, |
270 | {BQ2515X_TS_HOT, 0x27}, |
271 | {BQ2515X_DEVICE_ID, 0x35}, |
272 | }; |
273 | |
274 | static int bq2515x_wake_up(struct bq2515x_device *bq2515x) |
275 | { |
276 | int ret; |
277 | int val; |
278 | |
279 | /* Read the STAT register if we can read it then the device is out |
280 | * of ship mode. If the register cannot be read then attempt to wake |
281 | * it up and enable the ADC. |
282 | */ |
283 | ret = regmap_read(map: bq2515x->regmap, BQ2515X_STAT0, val: &val); |
284 | if (ret) |
285 | return ret; |
286 | |
287 | /* Need to toggle LP and bring device out of ship mode. The device |
288 | * will exit the ship mode when the MR pin is held low for at least |
289 | * t_WAKE2 as shown in section 8.3.7.1 of the datasheet. |
290 | */ |
291 | gpiod_set_value_cansleep(desc: bq2515x->powerdown_gpio, value: 0); |
292 | |
293 | gpiod_set_value_cansleep(desc: bq2515x->reset_gpio, value: 0); |
294 | usleep_range(BQ2515X_TWAKE2_MIN_US, BQ2515X_TWAKE2_MAX_US); |
295 | gpiod_set_value_cansleep(desc: bq2515x->reset_gpio, value: 1); |
296 | |
297 | return regmap_write(map: bq2515x->regmap, BQ2515X_ADC_READ_EN, |
298 | val: (BQ2515X_EN_VBAT_READ | BQ2515X_EN_ICHG_READ)); |
299 | } |
300 | |
301 | static int bq2515x_update_ps_status(struct bq2515x_device *bq2515x) |
302 | { |
303 | bool dc = false; |
304 | unsigned int val; |
305 | int ret; |
306 | |
307 | if (bq2515x->ac_detect_gpio) |
308 | val = gpiod_get_value_cansleep(desc: bq2515x->ac_detect_gpio); |
309 | else { |
310 | ret = regmap_read(map: bq2515x->regmap, BQ2515X_STAT0, val: &val); |
311 | if (ret) |
312 | return ret; |
313 | } |
314 | |
315 | dc = val & BQ2515X_VIN_GOOD; |
316 | |
317 | ret = bq2515x->mains_online != dc; |
318 | |
319 | bq2515x->mains_online = dc; |
320 | |
321 | return ret; |
322 | } |
323 | |
324 | static int bq2515x_disable_watchdog_timers(struct bq2515x_device *bq2515x) |
325 | { |
326 | int ret; |
327 | |
328 | ret = regmap_update_bits(map: bq2515x->regmap, BQ2515X_CHARGERCTRL0, |
329 | BQ2515X_WATCHDOG_DISABLE, BQ2515X_WATCHDOG_DISABLE); |
330 | if (ret) |
331 | return ret; |
332 | |
333 | return regmap_update_bits(map: bq2515x->regmap, BQ2515X_ICCTRL2, |
334 | BQ2515X_HWRESET_14S_WD, val: 0); |
335 | } |
336 | |
337 | static int bq2515x_get_battery_voltage_now(struct bq2515x_device *bq2515x) |
338 | { |
339 | int ret; |
340 | int vbat_msb; |
341 | int vbat_lsb; |
342 | uint32_t vbat_measurement; |
343 | |
344 | if (!bq2515x->mains_online) |
345 | bq2515x_wake_up(bq2515x); |
346 | |
347 | ret = regmap_read(map: bq2515x->regmap, BQ2515X_ADC_VBAT_M, val: &vbat_msb); |
348 | if (ret) |
349 | return ret; |
350 | |
351 | ret = regmap_read(map: bq2515x->regmap, BQ2515X_ADC_VBAT_L, val: &vbat_lsb); |
352 | if (ret) |
353 | return ret; |
354 | |
355 | vbat_measurement = (vbat_msb << 8) | vbat_lsb; |
356 | |
357 | return vbat_measurement * (BQ2515X_UV_FACTOR / BQ2515X_DIVISOR) * |
358 | BQ2515X_VBAT_MULTIPLIER; |
359 | } |
360 | |
361 | static int bq2515x_get_battery_current_now(struct bq2515x_device *bq2515x) |
362 | { |
363 | int ret; |
364 | int ichg_msb; |
365 | int ichg_lsb; |
366 | uint32_t ichg_measurement; |
367 | u16 ichg_multiplier = BQ2515X_ICHG_RNG_1B0_UA; |
368 | unsigned int ichg_reg_code, reg_code; |
369 | unsigned int icharge_range = 0, pchrgctrl; |
370 | unsigned int buvlo, vlowv_sel, vlowv = BQ2515X_VLOWV_SEL_1B0_UV; |
371 | |
372 | if (!bq2515x->mains_online) |
373 | return -ENODATA; |
374 | |
375 | ret = regmap_read(map: bq2515x->regmap, BQ2515X_ADC_ICHG_M, val: &ichg_msb); |
376 | if (ret) |
377 | return ret; |
378 | |
379 | ret = regmap_read(map: bq2515x->regmap, BQ2515X_ADC_ICHG_L, val: &ichg_lsb); |
380 | if (ret) |
381 | return ret; |
382 | |
383 | ichg_measurement = (ichg_msb << 8) | ichg_lsb; |
384 | |
385 | ret = regmap_read(map: bq2515x->regmap, BQ2515X_BUVLO, val: &buvlo); |
386 | if (ret) |
387 | return ret; |
388 | |
389 | vlowv_sel = buvlo & BQ2515X_VLOWV_SEL; |
390 | |
391 | if (vlowv_sel) |
392 | vlowv = BQ2515X_VLOWV_SEL_1B1_UV; |
393 | |
394 | if (bq2515x_get_battery_voltage_now(bq2515x) < vlowv) { |
395 | ret = regmap_read(map: bq2515x->regmap, BQ2515X_PCHRGCTRL, |
396 | val: &pchrgctrl); |
397 | if (ret) |
398 | return ret; |
399 | |
400 | reg_code = pchrgctrl & BQ2515X_PRECHARGE_MASK; |
401 | } else { |
402 | ret = regmap_read(map: bq2515x->regmap, BQ2515X_ICHG_CTRL, |
403 | val: &ichg_reg_code); |
404 | if (ret) |
405 | return ret; |
406 | |
407 | reg_code = ichg_reg_code; |
408 | } |
409 | |
410 | ret = regmap_read(map: bq2515x->regmap, BQ2515X_PCHRGCTRL, val: &pchrgctrl); |
411 | if (ret) |
412 | return ret; |
413 | |
414 | icharge_range = pchrgctrl & BQ2515X_ICHARGE_RANGE; |
415 | |
416 | if (icharge_range) |
417 | ichg_multiplier = BQ2515X_ICHG_RNG_1B1_UA; |
418 | |
419 | return reg_code * (ichg_multiplier * ichg_measurement / |
420 | BQ2515X_ICHG_DIVISOR); |
421 | } |
422 | |
423 | static bool bq2515x_get_charge_disable(struct bq2515x_device *bq2515x) |
424 | { |
425 | int ret; |
426 | int ce_pin; |
427 | int icctrl2; |
428 | int charger_disable; |
429 | |
430 | ce_pin = gpiod_get_value_cansleep(desc: bq2515x->ce_gpio); |
431 | |
432 | ret = regmap_read(map: bq2515x->regmap, BQ2515X_ICCTRL2, val: &icctrl2); |
433 | if (ret) |
434 | return ret; |
435 | |
436 | charger_disable = icctrl2 & BQ2515X_CHARGER_DISABLE; |
437 | |
438 | if (charger_disable || ce_pin) |
439 | return true; |
440 | |
441 | return false; |
442 | } |
443 | |
444 | static int bq2515x_set_charge_disable(struct bq2515x_device *bq2515x, int val) |
445 | { |
446 | gpiod_set_value_cansleep(desc: bq2515x->ce_gpio, value: val); |
447 | |
448 | return regmap_update_bits(map: bq2515x->regmap, BQ2515X_ICCTRL2, |
449 | BQ2515X_CHARGER_DISABLE, val); |
450 | } |
451 | |
452 | static int bq2515x_get_const_charge_current(struct bq2515x_device *bq2515x) |
453 | { |
454 | int ret; |
455 | u16 ichg_multiplier = BQ2515X_ICHG_RNG_1B0_UA; |
456 | unsigned int ichg_reg_code; |
457 | unsigned int pchrgctrl; |
458 | unsigned int icharge_range; |
459 | |
460 | ret = regmap_read(map: bq2515x->regmap, BQ2515X_ICHG_CTRL, val: &ichg_reg_code); |
461 | if (ret) |
462 | return ret; |
463 | |
464 | ret = regmap_read(map: bq2515x->regmap, BQ2515X_PCHRGCTRL, val: &pchrgctrl); |
465 | if (ret) |
466 | return ret; |
467 | |
468 | icharge_range = pchrgctrl & BQ2515X_ICHARGE_RANGE; |
469 | |
470 | if (icharge_range) |
471 | ichg_multiplier = BQ2515X_ICHG_RNG_1B1_UA; |
472 | |
473 | return ichg_reg_code * ichg_multiplier; |
474 | } |
475 | |
476 | static int bq2515x_set_const_charge_current(struct bq2515x_device *bq2515x, |
477 | int val) |
478 | { |
479 | int ret; |
480 | unsigned int ichg_reg_code; |
481 | u16 ichg_multiplier = BQ2515X_ICHG_RNG_1B0_UA; |
482 | unsigned int icharge_range = 0; |
483 | |
484 | if (val > BQ2515X_ICHG_MAX_UA || val < BQ2515X_ICHG_MIN_UA) |
485 | return -EINVAL; |
486 | |
487 | if (val > BQ2515X_ICHG_CURR_STEP_THRESH_UA) { |
488 | ichg_multiplier = BQ2515X_ICHG_RNG_1B1_UA; |
489 | icharge_range = BQ2515X_ICHARGE_RANGE; |
490 | } |
491 | |
492 | bq2515x_set_charge_disable(bq2515x, val: 1); |
493 | |
494 | ret = regmap_update_bits(map: bq2515x->regmap, BQ2515X_PCHRGCTRL, |
495 | BQ2515X_ICHARGE_RANGE, val: icharge_range); |
496 | if (ret) |
497 | return ret; |
498 | |
499 | ichg_reg_code = val / ichg_multiplier; |
500 | |
501 | ret = regmap_write(map: bq2515x->regmap, BQ2515X_ICHG_CTRL, val: ichg_reg_code); |
502 | if (ret) |
503 | return ret; |
504 | |
505 | return bq2515x_set_charge_disable(bq2515x, val: 0); |
506 | } |
507 | |
508 | static int bq2515x_get_precharge_current(struct bq2515x_device *bq2515x) |
509 | { |
510 | int ret; |
511 | unsigned int pchrgctrl; |
512 | unsigned int icharge_range; |
513 | u16 precharge_multiplier = BQ2515X_ICHG_RNG_1B0_UA; |
514 | unsigned int precharge_reg_code; |
515 | |
516 | ret = regmap_read(map: bq2515x->regmap, BQ2515X_PCHRGCTRL, val: &pchrgctrl); |
517 | if (ret) |
518 | return ret; |
519 | |
520 | icharge_range = pchrgctrl & BQ2515X_ICHARGE_RANGE; |
521 | |
522 | if (icharge_range) |
523 | precharge_multiplier = BQ2515X_ICHG_RNG_1B1_UA; |
524 | |
525 | precharge_reg_code = pchrgctrl & BQ2515X_PRECHARGE_MASK; |
526 | |
527 | return precharge_reg_code * precharge_multiplier; |
528 | } |
529 | |
530 | static int bq2515x_set_precharge_current(struct bq2515x_device *bq2515x, |
531 | int val) |
532 | { |
533 | int ret; |
534 | unsigned int pchrgctrl; |
535 | unsigned int icharge_range; |
536 | unsigned int precharge_reg_code; |
537 | unsigned int precharge_multiplier = BQ2515X_ICHG_RNG_1B0_UA; |
538 | unsigned int precharge_max_ua = BQ2515X_PRECHRG_ICHRG_RNGE_1875_UA; |
539 | |
540 | ret = regmap_read(map: bq2515x->regmap, BQ2515X_PCHRGCTRL, val: &pchrgctrl); |
541 | if (ret) |
542 | return ret; |
543 | |
544 | icharge_range = pchrgctrl & BQ2515X_ICHARGE_RANGE; |
545 | |
546 | if (icharge_range) { |
547 | precharge_max_ua = BQ2515X_PRECHRG_ICHRG_RNGE_3750_UA; |
548 | precharge_multiplier = BQ2515X_ICHG_RNG_1B1_UA; |
549 | } else { |
550 | precharge_max_ua = BQ2515X_PRECHRG_ICHRG_RNGE_1875_UA; |
551 | precharge_multiplier = BQ2515X_ICHG_RNG_1B0_UA; |
552 | } |
553 | if (val > precharge_max_ua || val < BQ2515X_ICHG_MIN_UA) |
554 | return -EINVAL; |
555 | |
556 | precharge_reg_code = val / precharge_multiplier; |
557 | |
558 | ret = bq2515x_set_charge_disable(bq2515x, val: 1); |
559 | if (ret) |
560 | return ret; |
561 | |
562 | ret = regmap_update_bits(map: bq2515x->regmap, BQ2515X_PCHRGCTRL, |
563 | BQ2515X_PRECHARGE_MASK, val: precharge_reg_code); |
564 | if (ret) |
565 | return ret; |
566 | |
567 | return bq2515x_set_charge_disable(bq2515x, val: 0); |
568 | } |
569 | |
570 | static int bq2515x_charging_status(struct bq2515x_device *bq2515x, |
571 | union power_supply_propval *val) |
572 | { |
573 | bool status0_no_fault; |
574 | bool status1_no_fault; |
575 | bool ce_status; |
576 | bool charge_done; |
577 | unsigned int status; |
578 | int ret; |
579 | |
580 | if (!bq2515x->mains_online) { |
581 | val->intval = POWER_SUPPLY_STATUS_DISCHARGING; |
582 | return 0; |
583 | } |
584 | |
585 | ret = regmap_read(map: bq2515x->regmap, BQ2515X_STAT0, val: &status); |
586 | if (ret) |
587 | return ret; |
588 | |
589 | /* |
590 | * The code block below is used to determine if any faults from the |
591 | * STAT0 register are disbaling charging or if the charge has completed |
592 | * according to the CHARGE_DONE_STAT bit. |
593 | */ |
594 | if (((status & BQ2515X_STAT0_MASK) == true) & |
595 | ((status & BQ2515X_CHRG_DONE) == false)) { |
596 | status0_no_fault = true; |
597 | charge_done = false; |
598 | } else if (status & BQ2515X_CHRG_DONE) { |
599 | charge_done = true; |
600 | status0_no_fault = false; |
601 | } else { |
602 | status0_no_fault = false; |
603 | charge_done = false; |
604 | } |
605 | |
606 | ret = regmap_read(map: bq2515x->regmap, BQ2515X_STAT1, val: &status); |
607 | if (ret) |
608 | return ret; |
609 | /* |
610 | * The code block below is used to determine if any faults from the |
611 | * STAT1 register are disbaling charging |
612 | */ |
613 | if ((status & BQ2515X_STAT1_MASK) == false) |
614 | status1_no_fault = true; |
615 | else |
616 | status1_no_fault = false; |
617 | |
618 | ce_status = (!bq2515x_get_charge_disable(bq2515x)); |
619 | |
620 | /* |
621 | * If there are no faults and charging is enabled, then status is |
622 | * charging. Otherwise, if charging is complete, then status is full. |
623 | * Otherwise, if a fault exists or charging is disabled, then status is |
624 | * not charging |
625 | */ |
626 | if (status0_no_fault & status1_no_fault & ce_status) |
627 | val->intval = POWER_SUPPLY_STATUS_CHARGING; |
628 | else if (charge_done) |
629 | val->intval = POWER_SUPPLY_STATUS_FULL; |
630 | else if (!(status0_no_fault & status1_no_fault & ce_status)) |
631 | val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; |
632 | |
633 | return 0; |
634 | } |
635 | |
636 | static int bq2515x_get_batt_reg(struct bq2515x_device *bq2515x) |
637 | { |
638 | int vbat_reg_code; |
639 | int ret; |
640 | |
641 | ret = regmap_read(map: bq2515x->regmap, BQ2515X_VBAT_CTRL, val: &vbat_reg_code); |
642 | if (ret) |
643 | return ret; |
644 | |
645 | return BQ2515X_VBAT_BASE_VOLT + vbat_reg_code * BQ2515X_VBAT_STEP_UV; |
646 | } |
647 | |
648 | static int bq2515x_set_batt_reg(struct bq2515x_device *bq2515x, int val) |
649 | { |
650 | int vbat_reg_code; |
651 | |
652 | if (val > BQ2515X_VBAT_REG_MAX || val < BQ2515X_VBAT_REG_MIN) |
653 | return -EINVAL; |
654 | |
655 | vbat_reg_code = (val - BQ2515X_VBAT_BASE_VOLT) / BQ2515X_VBAT_STEP_UV; |
656 | |
657 | return regmap_write(map: bq2515x->regmap, BQ2515X_VBAT_CTRL, val: vbat_reg_code); |
658 | } |
659 | |
660 | static int bq2515x_get_ilim_lvl(struct bq2515x_device *bq2515x) |
661 | { |
662 | int ret; |
663 | int ilimctrl; |
664 | |
665 | ret = regmap_read(map: bq2515x->regmap, BQ2515X_ILIMCTRL, val: &ilimctrl); |
666 | if (ret) |
667 | return ret; |
668 | |
669 | return bq2515x_ilim_lvl_values[ilimctrl & BQ2515X_ILIM_MASK]; |
670 | } |
671 | |
672 | static int bq2515x_set_ilim_lvl(struct bq2515x_device *bq2515x, int val) |
673 | { |
674 | int i = 0; |
675 | unsigned int array_size = ARRAY_SIZE(bq2515x_ilim_lvl_values); |
676 | |
677 | for (i = array_size - 1; i > 0; i--) { |
678 | if (val >= bq2515x_ilim_lvl_values[i]) |
679 | break; |
680 | } |
681 | return regmap_write(map: bq2515x->regmap, BQ2515X_ILIMCTRL, val: i); |
682 | } |
683 | |
684 | static int bq2515x_power_supply_property_is_writeable(struct power_supply *psy, |
685 | enum power_supply_property prop) |
686 | { |
687 | switch (prop) { |
688 | case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: |
689 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: |
690 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: |
691 | case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: |
692 | return true; |
693 | default: |
694 | return false; |
695 | } |
696 | } |
697 | |
698 | static int bq2515x_charger_get_health(struct bq2515x_device *bq2515x, |
699 | union power_supply_propval *val) |
700 | { |
701 | int health = POWER_SUPPLY_HEALTH_GOOD; |
702 | int ret; |
703 | unsigned int stat1; |
704 | unsigned int flag3; |
705 | |
706 | if (!bq2515x->mains_online) |
707 | bq2515x_wake_up(bq2515x); |
708 | |
709 | ret = regmap_read(map: bq2515x->regmap, BQ2515X_FLAG3, val: &flag3); |
710 | if (ret) |
711 | return ret; |
712 | |
713 | ret = regmap_read(map: bq2515x->regmap, BQ2515X_STAT1, val: &stat1); |
714 | if (ret) |
715 | return ret; |
716 | |
717 | if (stat1 & BQ2515X_HEALTH_MASK) { |
718 | switch (stat1 & BQ2515X_HEALTH_MASK) { |
719 | case BQ2515X_TS_HOT_STAT: |
720 | health = POWER_SUPPLY_HEALTH_HOT; |
721 | break; |
722 | case BQ2515X_TS_WARM_STAT: |
723 | health = POWER_SUPPLY_HEALTH_WARM; |
724 | break; |
725 | case BQ2515X_TS_COOL_STAT: |
726 | health = POWER_SUPPLY_HEALTH_COOL; |
727 | break; |
728 | case BQ2515X_TS_COLD_STAT: |
729 | health = POWER_SUPPLY_HEALTH_COLD; |
730 | break; |
731 | default: |
732 | health = POWER_SUPPLY_HEALTH_UNKNOWN; |
733 | break; |
734 | } |
735 | } |
736 | |
737 | if (stat1 & BQ2515X_VIN_OVP_FAULT_STAT) |
738 | health = POWER_SUPPLY_HEALTH_OVERVOLTAGE; |
739 | |
740 | if (flag3 & BQ2515X_SAFETY_TIMER_EXP) |
741 | health = POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE; |
742 | |
743 | val->intval = health; |
744 | return 0; |
745 | } |
746 | |
747 | static int bq2515x_mains_set_property(struct power_supply *psy, |
748 | enum power_supply_property prop, |
749 | const union power_supply_propval *val) |
750 | { |
751 | struct bq2515x_device *bq2515x = power_supply_get_drvdata(psy); |
752 | int ret; |
753 | |
754 | switch (prop) { |
755 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: |
756 | ret = bq2515x_set_batt_reg(bq2515x, val: val->intval); |
757 | break; |
758 | |
759 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: |
760 | ret = bq2515x_set_const_charge_current(bq2515x, val: val->intval); |
761 | break; |
762 | |
763 | case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: |
764 | ret = bq2515x_set_ilim_lvl(bq2515x, val: val->intval); |
765 | break; |
766 | |
767 | case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: |
768 | ret = bq2515x_set_precharge_current(bq2515x, val: val->intval); |
769 | break; |
770 | |
771 | default: |
772 | return -EINVAL; |
773 | } |
774 | |
775 | return ret; |
776 | } |
777 | |
778 | static int bq2515x_mains_get_property(struct power_supply *psy, |
779 | enum power_supply_property prop, |
780 | union power_supply_propval *val) |
781 | { |
782 | struct bq2515x_device *bq2515x = power_supply_get_drvdata(psy); |
783 | int ret = 0; |
784 | |
785 | switch (prop) { |
786 | |
787 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: |
788 | ret = bq2515x_get_const_charge_current(bq2515x); |
789 | if (ret < 0) |
790 | return ret; |
791 | |
792 | val->intval = ret; |
793 | break; |
794 | |
795 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: |
796 | ret = bq2515x_get_batt_reg(bq2515x); |
797 | if (ret < 0) |
798 | return ret; |
799 | val->intval = ret; |
800 | break; |
801 | |
802 | case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: |
803 | ret = bq2515x_get_precharge_current(bq2515x); |
804 | if (ret < 0) |
805 | return ret; |
806 | val->intval = ret; |
807 | break; |
808 | |
809 | case POWER_SUPPLY_PROP_ONLINE: |
810 | val->intval = bq2515x->mains_online; |
811 | break; |
812 | |
813 | case POWER_SUPPLY_PROP_HEALTH: |
814 | ret = bq2515x_charger_get_health(bq2515x, val); |
815 | if (ret) |
816 | val->intval = POWER_SUPPLY_HEALTH_UNKNOWN; |
817 | break; |
818 | |
819 | case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: |
820 | ret = bq2515x_get_ilim_lvl(bq2515x); |
821 | if (ret < 0) |
822 | return ret; |
823 | val->intval = ret; |
824 | break; |
825 | |
826 | case POWER_SUPPLY_PROP_MODEL_NAME: |
827 | val->strval = bq2515x->model_name; |
828 | break; |
829 | |
830 | case POWER_SUPPLY_PROP_MANUFACTURER: |
831 | val->strval = BQ2515X_MANUFACTURER; |
832 | break; |
833 | |
834 | case POWER_SUPPLY_PROP_STATUS: |
835 | ret = bq2515x_charging_status(bq2515x, val); |
836 | if (ret) |
837 | return ret; |
838 | break; |
839 | |
840 | default: |
841 | return -EINVAL; |
842 | } |
843 | |
844 | return ret; |
845 | } |
846 | |
847 | static int bq2515x_battery_get_property(struct power_supply *psy, |
848 | enum power_supply_property prop, |
849 | union power_supply_propval *val) |
850 | { |
851 | struct bq2515x_device *bq2515x = power_supply_get_drvdata(psy); |
852 | int ret; |
853 | |
854 | ret = bq2515x_update_ps_status(bq2515x); |
855 | if (ret) |
856 | return ret; |
857 | |
858 | switch (prop) { |
859 | |
860 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: |
861 | ret = bq2515x->init_data.vbatreg; |
862 | if (ret < 0) |
863 | return ret; |
864 | val->intval = ret; |
865 | break; |
866 | |
867 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: |
868 | ret = bq2515x->init_data.ichg; |
869 | if (ret < 0) |
870 | return ret; |
871 | val->intval = ret; |
872 | break; |
873 | |
874 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: |
875 | ret = bq2515x_get_battery_voltage_now(bq2515x); |
876 | if (ret < 0) |
877 | return ret; |
878 | val->intval = ret; |
879 | break; |
880 | |
881 | case POWER_SUPPLY_PROP_CURRENT_NOW: |
882 | ret = bq2515x_get_battery_current_now(bq2515x); |
883 | if (ret < 0) |
884 | return ret; |
885 | val->intval = ret; |
886 | break; |
887 | |
888 | default: |
889 | return -EINVAL; |
890 | } |
891 | return 0; |
892 | } |
893 | |
894 | static const enum power_supply_property bq2515x_battery_properties[] = { |
895 | POWER_SUPPLY_PROP_VOLTAGE_NOW, |
896 | POWER_SUPPLY_PROP_CURRENT_NOW, |
897 | POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX, |
898 | POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX, |
899 | }; |
900 | |
901 | static const enum power_supply_property bq2515x_mains_properties[] = { |
902 | POWER_SUPPLY_PROP_ONLINE, |
903 | POWER_SUPPLY_PROP_STATUS, |
904 | POWER_SUPPLY_PROP_HEALTH, |
905 | POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, |
906 | POWER_SUPPLY_PROP_MODEL_NAME, |
907 | POWER_SUPPLY_PROP_MANUFACTURER, |
908 | POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, |
909 | POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT, |
910 | POWER_SUPPLY_PROP_PRECHARGE_CURRENT, |
911 | }; |
912 | |
913 | static const struct power_supply_desc bq2515x_mains_desc = { |
914 | .name = "bq2515x-mains" , |
915 | .type = POWER_SUPPLY_TYPE_MAINS, |
916 | .get_property = bq2515x_mains_get_property, |
917 | .set_property = bq2515x_mains_set_property, |
918 | .properties = bq2515x_mains_properties, |
919 | .num_properties = ARRAY_SIZE(bq2515x_mains_properties), |
920 | .property_is_writeable = bq2515x_power_supply_property_is_writeable, |
921 | }; |
922 | |
923 | static const struct power_supply_desc bq2515x_battery_desc = { |
924 | .name = "bq2515x-battery" , |
925 | .type = POWER_SUPPLY_TYPE_BATTERY, |
926 | .get_property = bq2515x_battery_get_property, |
927 | .properties = bq2515x_battery_properties, |
928 | .num_properties = ARRAY_SIZE(bq2515x_battery_properties), |
929 | .property_is_writeable = bq2515x_power_supply_property_is_writeable, |
930 | }; |
931 | |
932 | static int bq2515x_power_supply_register(struct bq2515x_device *bq2515x, |
933 | struct device *dev, struct power_supply_config psy_cfg) |
934 | { |
935 | bq2515x->mains = devm_power_supply_register(parent: bq2515x->dev, |
936 | desc: &bq2515x_mains_desc, |
937 | cfg: &psy_cfg); |
938 | if (IS_ERR(ptr: bq2515x->mains)) |
939 | return -EINVAL; |
940 | |
941 | bq2515x->battery = devm_power_supply_register(parent: bq2515x->dev, |
942 | desc: &bq2515x_battery_desc, |
943 | cfg: &psy_cfg); |
944 | if (IS_ERR(ptr: bq2515x->battery)) |
945 | return -EINVAL; |
946 | |
947 | return 0; |
948 | } |
949 | |
950 | static int bq2515x_hw_init(struct bq2515x_device *bq2515x) |
951 | { |
952 | int ret; |
953 | struct power_supply_battery_info *bat_info; |
954 | |
955 | ret = bq2515x_disable_watchdog_timers(bq2515x); |
956 | if (ret) |
957 | return ret; |
958 | |
959 | if (bq2515x->init_data.ilim) { |
960 | ret = bq2515x_set_ilim_lvl(bq2515x, val: bq2515x->init_data.ilim); |
961 | if (ret) |
962 | return ret; |
963 | } |
964 | |
965 | ret = power_supply_get_battery_info(psy: bq2515x->mains, info_out: &bat_info); |
966 | if (ret) { |
967 | dev_warn(bq2515x->dev, "battery info missing, default values will be applied\n" ); |
968 | |
969 | bq2515x->init_data.ichg = BQ2515X_DEFAULT_ICHG_UA; |
970 | |
971 | bq2515x->init_data.vbatreg = BQ2515X_DEFAULT_VBAT_REG_UV; |
972 | |
973 | bq2515x->init_data.iprechg = BQ2515X_DEFAULT_IPRECHARGE_UA; |
974 | |
975 | } else { |
976 | bq2515x->init_data.ichg = |
977 | bat_info->constant_charge_current_max_ua; |
978 | |
979 | bq2515x->init_data.vbatreg = |
980 | bat_info->constant_charge_voltage_max_uv; |
981 | |
982 | bq2515x->init_data.iprechg = |
983 | bat_info->precharge_current_ua; |
984 | } |
985 | |
986 | ret = bq2515x_set_const_charge_current(bq2515x, |
987 | val: bq2515x->init_data.ichg); |
988 | if (ret) |
989 | return ret; |
990 | |
991 | ret = bq2515x_set_batt_reg(bq2515x, val: bq2515x->init_data.vbatreg); |
992 | if (ret) |
993 | return ret; |
994 | |
995 | return bq2515x_set_precharge_current(bq2515x, |
996 | val: bq2515x->init_data.iprechg); |
997 | } |
998 | |
999 | static int bq2515x_read_properties(struct bq2515x_device *bq2515x) |
1000 | { |
1001 | int ret; |
1002 | |
1003 | ret = device_property_read_u32(dev: bq2515x->dev, |
1004 | propname: "input-current-limit-microamp" , |
1005 | val: &bq2515x->init_data.ilim); |
1006 | if (ret) |
1007 | bq2515x->init_data.ilim = bq2515x->info->ilim; |
1008 | |
1009 | bq2515x->ac_detect_gpio = devm_gpiod_get_optional(dev: bq2515x->dev, |
1010 | con_id: "ac-detect" , flags: GPIOD_IN); |
1011 | if (IS_ERR(ptr: bq2515x->ac_detect_gpio)) { |
1012 | ret = PTR_ERR(ptr: bq2515x->ac_detect_gpio); |
1013 | dev_err(bq2515x->dev, "Failed to get ac detect" ); |
1014 | return ret; |
1015 | } |
1016 | |
1017 | bq2515x->reset_gpio = devm_gpiod_get_optional(dev: bq2515x->dev, |
1018 | con_id: "reset" , flags: GPIOD_OUT_LOW); |
1019 | if (IS_ERR(ptr: bq2515x->reset_gpio)) { |
1020 | ret = PTR_ERR(ptr: bq2515x->reset_gpio); |
1021 | dev_err(bq2515x->dev, "Failed to get reset" ); |
1022 | return ret; |
1023 | } |
1024 | |
1025 | bq2515x->powerdown_gpio = devm_gpiod_get_optional(dev: bq2515x->dev, |
1026 | con_id: "powerdown" , flags: GPIOD_OUT_LOW); |
1027 | if (IS_ERR(ptr: bq2515x->powerdown_gpio)) { |
1028 | ret = PTR_ERR(ptr: bq2515x->powerdown_gpio); |
1029 | dev_err(bq2515x->dev, "Failed to get powerdown" ); |
1030 | return ret; |
1031 | } |
1032 | |
1033 | bq2515x->ce_gpio = devm_gpiod_get_optional(dev: bq2515x->dev, |
1034 | con_id: "charge-enable" , |
1035 | flags: GPIOD_OUT_LOW); |
1036 | if (IS_ERR(ptr: bq2515x->ce_gpio)) { |
1037 | ret = PTR_ERR(ptr: bq2515x->ce_gpio); |
1038 | dev_err(bq2515x->dev, "Failed to get ce" ); |
1039 | return ret; |
1040 | } |
1041 | |
1042 | return 0; |
1043 | } |
1044 | |
1045 | static bool bq2515x_volatile_register(struct device *dev, unsigned int reg) |
1046 | { |
1047 | switch (reg) { |
1048 | case BQ2515X_STAT0 ... BQ2515X_FLAG3: |
1049 | case BQ2515X_ADC_VBAT_M ... BQ2515X_ADC_IIN_L: |
1050 | return true; |
1051 | default: |
1052 | return false; |
1053 | } |
1054 | } |
1055 | |
1056 | static const struct regmap_config bq25150_regmap_config = { |
1057 | .reg_bits = 8, |
1058 | .val_bits = 8, |
1059 | |
1060 | .max_register = BQ2515X_DEVICE_ID, |
1061 | .reg_defaults = bq25150_reg_defaults, |
1062 | .num_reg_defaults = ARRAY_SIZE(bq25150_reg_defaults), |
1063 | .cache_type = REGCACHE_RBTREE, |
1064 | .volatile_reg = bq2515x_volatile_register, |
1065 | }; |
1066 | |
1067 | static const struct regmap_config bq25155_regmap_config = { |
1068 | .reg_bits = 8, |
1069 | .val_bits = 8, |
1070 | |
1071 | .max_register = BQ2515X_DEVICE_ID, |
1072 | .reg_defaults = bq25155_reg_defaults, |
1073 | .num_reg_defaults = ARRAY_SIZE(bq25155_reg_defaults), |
1074 | .cache_type = REGCACHE_RBTREE, |
1075 | .volatile_reg = bq2515x_volatile_register, |
1076 | }; |
1077 | |
1078 | static int bq2515x_probe(struct i2c_client *client) |
1079 | { |
1080 | const struct i2c_device_id *id = i2c_client_get_device_id(client); |
1081 | struct device *dev = &client->dev; |
1082 | struct bq2515x_device *bq2515x; |
1083 | struct power_supply_config charger_cfg = {}; |
1084 | int ret; |
1085 | |
1086 | bq2515x = devm_kzalloc(dev, size: sizeof(*bq2515x), GFP_KERNEL); |
1087 | if (!bq2515x) |
1088 | return -ENOMEM; |
1089 | |
1090 | bq2515x->dev = dev; |
1091 | |
1092 | strscpy(bq2515x->model_name, id->name, sizeof(bq2515x->model_name)); |
1093 | |
1094 | bq2515x->info = i2c_get_match_data(client); |
1095 | bq2515x->regmap = devm_regmap_init_i2c(client, |
1096 | bq2515x->info->regmap_config); |
1097 | if (IS_ERR(ptr: bq2515x->regmap)) { |
1098 | dev_err(dev, "failed to allocate register map\n" ); |
1099 | return PTR_ERR(ptr: bq2515x->regmap); |
1100 | } |
1101 | |
1102 | i2c_set_clientdata(client, data: bq2515x); |
1103 | |
1104 | charger_cfg.drv_data = bq2515x; |
1105 | charger_cfg.of_node = dev->of_node; |
1106 | |
1107 | ret = bq2515x_read_properties(bq2515x); |
1108 | if (ret) { |
1109 | dev_err(dev, "Failed to read device tree properties %d\n" , |
1110 | ret); |
1111 | return ret; |
1112 | } |
1113 | |
1114 | ret = bq2515x_power_supply_register(bq2515x, dev, psy_cfg: charger_cfg); |
1115 | if (ret) { |
1116 | dev_err(dev, "failed to register power supply\n" ); |
1117 | return ret; |
1118 | } |
1119 | |
1120 | ret = bq2515x_hw_init(bq2515x); |
1121 | if (ret) { |
1122 | dev_err(dev, "Cannot initialize the chip\n" ); |
1123 | return ret; |
1124 | } |
1125 | |
1126 | return 0; |
1127 | } |
1128 | |
1129 | static const struct bq2515x_info bq25150 = { |
1130 | .regmap_config = &bq25150_regmap_config, |
1131 | .ilim = BQ25150_DEFAULT_ILIM_UA, |
1132 | }; |
1133 | |
1134 | static const struct bq2515x_info bq25155 = { |
1135 | .regmap_config = &bq25155_regmap_config, |
1136 | .ilim = BQ25155_DEFAULT_ILIM_UA, |
1137 | }; |
1138 | |
1139 | static const struct i2c_device_id bq2515x_i2c_ids[] = { |
1140 | { "bq25150" , (kernel_ulong_t)&bq25150 }, |
1141 | { "bq25155" , (kernel_ulong_t)&bq25155 }, |
1142 | {} |
1143 | }; |
1144 | MODULE_DEVICE_TABLE(i2c, bq2515x_i2c_ids); |
1145 | |
1146 | static const struct of_device_id bq2515x_of_match[] = { |
1147 | { .compatible = "ti,bq25150" , .data = &bq25150 }, |
1148 | { .compatible = "ti,bq25155" , .data = &bq25155 }, |
1149 | {} |
1150 | }; |
1151 | MODULE_DEVICE_TABLE(of, bq2515x_of_match); |
1152 | |
1153 | static struct i2c_driver bq2515x_driver = { |
1154 | .driver = { |
1155 | .name = "bq2515x-charger" , |
1156 | .of_match_table = bq2515x_of_match, |
1157 | }, |
1158 | .probe = bq2515x_probe, |
1159 | .id_table = bq2515x_i2c_ids, |
1160 | }; |
1161 | module_i2c_driver(bq2515x_driver); |
1162 | |
1163 | MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>" ); |
1164 | MODULE_AUTHOR("Ricardo Rivera-Matos <r-rivera-matos@ti.com>" ); |
1165 | MODULE_DESCRIPTION("BQ2515X charger driver" ); |
1166 | MODULE_LICENSE("GPL v2" ); |
1167 | |