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af8b5fc3 KM |
1 | /* |
2 | * Copyright 2012 Texas Instruments | |
3 | * | |
4 | * Author: Milo(Woogyom) Kim <milo.kim@ti.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | */ | |
11 | ||
12 | #include <linux/module.h> | |
13 | #include <linux/slab.h> | |
14 | #include <linux/i2c.h> | |
15 | #include <linux/regmap.h> | |
16 | #include <linux/err.h> | |
17 | #include <linux/gpio.h> | |
7e6213f4 | 18 | #include <linux/delay.h> |
af8b5fc3 KM |
19 | #include <linux/regulator/lp872x.h> |
20 | #include <linux/regulator/driver.h> | |
21 | #include <linux/platform_device.h> | |
00fd6e61 KM |
22 | #include <linux/of.h> |
23 | #include <linux/of_gpio.h> | |
24 | #include <linux/regulator/of_regulator.h> | |
af8b5fc3 KM |
25 | |
26 | /* Registers : LP8720/8725 shared */ | |
27 | #define LP872X_GENERAL_CFG 0x00 | |
28 | #define LP872X_LDO1_VOUT 0x01 | |
29 | #define LP872X_LDO2_VOUT 0x02 | |
30 | #define LP872X_LDO3_VOUT 0x03 | |
31 | #define LP872X_LDO4_VOUT 0x04 | |
32 | #define LP872X_LDO5_VOUT 0x05 | |
33 | ||
34 | /* Registers : LP8720 */ | |
35 | #define LP8720_BUCK_VOUT1 0x06 | |
36 | #define LP8720_BUCK_VOUT2 0x07 | |
37 | #define LP8720_ENABLE 0x08 | |
38 | ||
39 | /* Registers : LP8725 */ | |
40 | #define LP8725_LILO1_VOUT 0x06 | |
41 | #define LP8725_LILO2_VOUT 0x07 | |
42 | #define LP8725_BUCK1_VOUT1 0x08 | |
43 | #define LP8725_BUCK1_VOUT2 0x09 | |
44 | #define LP8725_BUCK2_VOUT1 0x0A | |
45 | #define LP8725_BUCK2_VOUT2 0x0B | |
46 | #define LP8725_BUCK_CTRL 0x0C | |
47 | #define LP8725_LDO_CTRL 0x0D | |
48 | ||
49 | /* Mask/shift : LP8720/LP8725 shared */ | |
50 | #define LP872X_VOUT_M 0x1F | |
51 | #define LP872X_START_DELAY_M 0xE0 | |
52 | #define LP872X_START_DELAY_S 5 | |
53 | #define LP872X_EN_LDO1_M BIT(0) | |
54 | #define LP872X_EN_LDO2_M BIT(1) | |
55 | #define LP872X_EN_LDO3_M BIT(2) | |
56 | #define LP872X_EN_LDO4_M BIT(3) | |
57 | #define LP872X_EN_LDO5_M BIT(4) | |
58 | ||
59 | /* Mask/shift : LP8720 */ | |
60 | #define LP8720_TIMESTEP_S 0 /* Addr 00h */ | |
61 | #define LP8720_TIMESTEP_M BIT(0) | |
62 | #define LP8720_EXT_DVS_M BIT(2) | |
63 | #define LP8720_BUCK_FPWM_S 5 /* Addr 07h */ | |
64 | #define LP8720_BUCK_FPWM_M BIT(5) | |
65 | #define LP8720_EN_BUCK_M BIT(5) /* Addr 08h */ | |
66 | #define LP8720_DVS_SEL_M BIT(7) | |
67 | ||
68 | /* Mask/shift : LP8725 */ | |
69 | #define LP8725_TIMESTEP_M 0xC0 /* Addr 00h */ | |
70 | #define LP8725_TIMESTEP_S 6 | |
71 | #define LP8725_BUCK1_EN_M BIT(0) | |
72 | #define LP8725_DVS1_M BIT(2) | |
73 | #define LP8725_DVS2_M BIT(3) | |
74 | #define LP8725_BUCK2_EN_M BIT(4) | |
75 | #define LP8725_BUCK_CL_M 0xC0 /* Addr 09h, 0Bh */ | |
76 | #define LP8725_BUCK_CL_S 6 | |
77 | #define LP8725_BUCK1_FPWM_S 1 /* Addr 0Ch */ | |
78 | #define LP8725_BUCK1_FPWM_M BIT(1) | |
79 | #define LP8725_BUCK2_FPWM_S 5 | |
80 | #define LP8725_BUCK2_FPWM_M BIT(5) | |
81 | #define LP8725_EN_LILO1_M BIT(5) /* Addr 0Dh */ | |
82 | #define LP8725_EN_LILO2_M BIT(6) | |
83 | ||
84 | /* PWM mode */ | |
85 | #define LP872X_FORCE_PWM 1 | |
86 | #define LP872X_AUTO_PWM 0 | |
87 | ||
88 | #define LP8720_NUM_REGULATORS 6 | |
89 | #define LP8725_NUM_REGULATORS 9 | |
90 | #define EXTERN_DVS_USED 0 | |
91 | #define MAX_DELAY 6 | |
92 | ||
b158fba6 KM |
93 | /* Default DVS Mode */ |
94 | #define LP8720_DEFAULT_DVS 0 | |
95 | #define LP8725_DEFAULT_DVS BIT(2) | |
96 | ||
af8b5fc3 KM |
97 | /* dump registers in regmap-debugfs */ |
98 | #define MAX_REGISTERS 0x0F | |
99 | ||
100 | enum lp872x_id { | |
101 | LP8720, | |
102 | LP8725, | |
103 | }; | |
104 | ||
105 | struct lp872x { | |
106 | struct regmap *regmap; | |
107 | struct device *dev; | |
108 | enum lp872x_id chipid; | |
109 | struct lp872x_platform_data *pdata; | |
af8b5fc3 KM |
110 | int num_regulators; |
111 | enum lp872x_dvs_state dvs_pin; | |
af8b5fc3 KM |
112 | }; |
113 | ||
114 | /* LP8720/LP8725 shared voltage table for LDOs */ | |
115 | static const unsigned int lp872x_ldo_vtbl[] = { | |
116 | 1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000, | |
117 | 1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 2000000, | |
118 | 2100000, 2200000, 2300000, 2400000, 2500000, 2600000, 2650000, 2700000, | |
119 | 2750000, 2800000, 2850000, 2900000, 2950000, 3000000, 3100000, 3300000, | |
120 | }; | |
121 | ||
122 | /* LP8720 LDO4 voltage table */ | |
123 | static const unsigned int lp8720_ldo4_vtbl[] = { | |
124 | 800000, 850000, 900000, 1000000, 1100000, 1200000, 1250000, 1300000, | |
125 | 1350000, 1400000, 1450000, 1500000, 1550000, 1600000, 1650000, 1700000, | |
126 | 1750000, 1800000, 1850000, 1900000, 2000000, 2100000, 2200000, 2300000, | |
127 | 2400000, 2500000, 2600000, 2650000, 2700000, 2750000, 2800000, 2850000, | |
128 | }; | |
129 | ||
130 | /* LP8725 LILO(Low Input Low Output) voltage table */ | |
131 | static const unsigned int lp8725_lilo_vtbl[] = { | |
132 | 800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000, | |
133 | 1200000, 1250000, 1300000, 1350000, 1400000, 1500000, 1600000, 1700000, | |
134 | 1800000, 1900000, 2000000, 2100000, 2200000, 2300000, 2400000, 2500000, | |
135 | 2600000, 2700000, 2800000, 2850000, 2900000, 3000000, 3100000, 3300000, | |
136 | }; | |
137 | ||
138 | /* LP8720 BUCK voltage table */ | |
139 | #define EXT_R 0 /* external resistor divider */ | |
140 | static const unsigned int lp8720_buck_vtbl[] = { | |
141 | EXT_R, 800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, | |
142 | 1150000, 1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, | |
143 | 1550000, 1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, | |
144 | 1950000, 2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, | |
145 | }; | |
146 | ||
147 | /* LP8725 BUCK voltage table */ | |
148 | static const unsigned int lp8725_buck_vtbl[] = { | |
149 | 800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000, | |
150 | 1200000, 1250000, 1300000, 1350000, 1400000, 1500000, 1600000, 1700000, | |
151 | 1750000, 1800000, 1850000, 1900000, 2000000, 2100000, 2200000, 2300000, | |
152 | 2400000, 2500000, 2600000, 2700000, 2800000, 2850000, 2900000, 3000000, | |
153 | }; | |
154 | ||
155 | /* LP8725 BUCK current limit */ | |
156 | static const unsigned int lp8725_buck_uA[] = { | |
157 | 460000, 780000, 1050000, 1370000, | |
158 | }; | |
159 | ||
160 | static int lp872x_read_byte(struct lp872x *lp, u8 addr, u8 *data) | |
161 | { | |
162 | int ret; | |
163 | unsigned int val; | |
164 | ||
165 | ret = regmap_read(lp->regmap, addr, &val); | |
166 | if (ret < 0) { | |
167 | dev_err(lp->dev, "failed to read 0x%.2x\n", addr); | |
168 | return ret; | |
169 | } | |
170 | ||
171 | *data = (u8)val; | |
172 | return 0; | |
173 | } | |
174 | ||
175 | static inline int lp872x_write_byte(struct lp872x *lp, u8 addr, u8 data) | |
176 | { | |
177 | return regmap_write(lp->regmap, addr, data); | |
178 | } | |
179 | ||
180 | static inline int lp872x_update_bits(struct lp872x *lp, u8 addr, | |
181 | unsigned int mask, u8 data) | |
182 | { | |
183 | return regmap_update_bits(lp->regmap, addr, mask, data); | |
184 | } | |
185 | ||
af8b5fc3 KM |
186 | static int lp872x_get_timestep_usec(struct lp872x *lp) |
187 | { | |
188 | enum lp872x_id chip = lp->chipid; | |
189 | u8 val, mask, shift; | |
190 | int *time_usec, size, ret; | |
191 | int lp8720_time_usec[] = { 25, 50 }; | |
192 | int lp8725_time_usec[] = { 32, 64, 128, 256 }; | |
193 | ||
194 | switch (chip) { | |
195 | case LP8720: | |
196 | mask = LP8720_TIMESTEP_M; | |
197 | shift = LP8720_TIMESTEP_S; | |
198 | time_usec = &lp8720_time_usec[0]; | |
199 | size = ARRAY_SIZE(lp8720_time_usec); | |
200 | break; | |
201 | case LP8725: | |
202 | mask = LP8725_TIMESTEP_M; | |
203 | shift = LP8725_TIMESTEP_S; | |
204 | time_usec = &lp8725_time_usec[0]; | |
205 | size = ARRAY_SIZE(lp8725_time_usec); | |
206 | break; | |
207 | default: | |
208 | return -EINVAL; | |
209 | } | |
210 | ||
211 | ret = lp872x_read_byte(lp, LP872X_GENERAL_CFG, &val); | |
212 | if (ret) | |
ad5ec6cd | 213 | return ret; |
af8b5fc3 KM |
214 | |
215 | val = (val & mask) >> shift; | |
216 | if (val >= size) | |
217 | return -EINVAL; | |
218 | ||
219 | return *(time_usec + val); | |
220 | } | |
221 | ||
222 | static int lp872x_regulator_enable_time(struct regulator_dev *rdev) | |
223 | { | |
224 | struct lp872x *lp = rdev_get_drvdata(rdev); | |
2c129927 | 225 | enum lp872x_regulator_id rid = rdev_get_id(rdev); |
af8b5fc3 | 226 | int time_step_us = lp872x_get_timestep_usec(lp); |
2c129927 | 227 | int ret; |
af8b5fc3 KM |
228 | u8 addr, val; |
229 | ||
230 | if (time_step_us < 0) | |
ad5ec6cd | 231 | return time_step_us; |
af8b5fc3 | 232 | |
2c129927 AL |
233 | switch (rid) { |
234 | case LP8720_ID_LDO1 ... LP8720_ID_BUCK: | |
235 | addr = LP872X_LDO1_VOUT + rid; | |
af8b5fc3 | 236 | break; |
2c129927 AL |
237 | case LP8725_ID_LDO1 ... LP8725_ID_BUCK1: |
238 | addr = LP872X_LDO1_VOUT + rid - LP8725_ID_BASE; | |
af8b5fc3 KM |
239 | break; |
240 | case LP8725_ID_BUCK2: | |
241 | addr = LP8725_BUCK2_VOUT1; | |
242 | break; | |
243 | default: | |
244 | return -EINVAL; | |
245 | } | |
246 | ||
247 | ret = lp872x_read_byte(lp, addr, &val); | |
248 | if (ret) | |
249 | return ret; | |
250 | ||
251 | val = (val & LP872X_START_DELAY_M) >> LP872X_START_DELAY_S; | |
252 | ||
253 | return val > MAX_DELAY ? 0 : val * time_step_us; | |
254 | } | |
255 | ||
9d6da6fc KM |
256 | static void lp872x_set_dvs(struct lp872x *lp, enum lp872x_dvs_sel dvs_sel, |
257 | int gpio) | |
af8b5fc3 | 258 | { |
af8b5fc3 KM |
259 | enum lp872x_dvs_state state; |
260 | ||
261 | state = dvs_sel == SEL_V1 ? DVS_HIGH : DVS_LOW; | |
262 | gpio_set_value(gpio, state); | |
263 | lp->dvs_pin = state; | |
264 | } | |
265 | ||
266 | static u8 lp872x_select_buck_vout_addr(struct lp872x *lp, | |
267 | enum lp872x_regulator_id buck) | |
268 | { | |
269 | u8 val, addr; | |
270 | ||
271 | if (lp872x_read_byte(lp, LP872X_GENERAL_CFG, &val)) | |
272 | return 0; | |
273 | ||
274 | switch (buck) { | |
275 | case LP8720_ID_BUCK: | |
276 | if (val & LP8720_EXT_DVS_M) { | |
277 | addr = (lp->dvs_pin == DVS_HIGH) ? | |
278 | LP8720_BUCK_VOUT1 : LP8720_BUCK_VOUT2; | |
279 | } else { | |
280 | if (lp872x_read_byte(lp, LP8720_ENABLE, &val)) | |
281 | return 0; | |
282 | ||
283 | addr = val & LP8720_DVS_SEL_M ? | |
284 | LP8720_BUCK_VOUT1 : LP8720_BUCK_VOUT2; | |
285 | } | |
286 | break; | |
287 | case LP8725_ID_BUCK1: | |
288 | if (val & LP8725_DVS1_M) | |
289 | addr = LP8725_BUCK1_VOUT1; | |
290 | else | |
291 | addr = (lp->dvs_pin == DVS_HIGH) ? | |
292 | LP8725_BUCK1_VOUT1 : LP8725_BUCK1_VOUT2; | |
293 | break; | |
294 | case LP8725_ID_BUCK2: | |
295 | addr = val & LP8725_DVS2_M ? | |
296 | LP8725_BUCK2_VOUT1 : LP8725_BUCK2_VOUT2; | |
297 | break; | |
298 | default: | |
299 | return 0; | |
300 | } | |
301 | ||
302 | return addr; | |
303 | } | |
304 | ||
305 | static bool lp872x_is_valid_buck_addr(u8 addr) | |
306 | { | |
307 | switch (addr) { | |
308 | case LP8720_BUCK_VOUT1: | |
309 | case LP8720_BUCK_VOUT2: | |
310 | case LP8725_BUCK1_VOUT1: | |
311 | case LP8725_BUCK1_VOUT2: | |
312 | case LP8725_BUCK2_VOUT1: | |
313 | case LP8725_BUCK2_VOUT2: | |
314 | return true; | |
315 | default: | |
316 | return false; | |
317 | } | |
318 | } | |
319 | ||
320 | static int lp872x_buck_set_voltage_sel(struct regulator_dev *rdev, | |
321 | unsigned selector) | |
322 | { | |
323 | struct lp872x *lp = rdev_get_drvdata(rdev); | |
324 | enum lp872x_regulator_id buck = rdev_get_id(rdev); | |
325 | u8 addr, mask = LP872X_VOUT_M; | |
9d6da6fc | 326 | struct lp872x_dvs *dvs = lp->pdata ? lp->pdata->dvs : NULL; |
af8b5fc3 KM |
327 | |
328 | if (dvs && gpio_is_valid(dvs->gpio)) | |
9d6da6fc | 329 | lp872x_set_dvs(lp, dvs->vsel, dvs->gpio); |
af8b5fc3 KM |
330 | |
331 | addr = lp872x_select_buck_vout_addr(lp, buck); | |
332 | if (!lp872x_is_valid_buck_addr(addr)) | |
333 | return -EINVAL; | |
334 | ||
335 | return lp872x_update_bits(lp, addr, mask, selector); | |
336 | } | |
337 | ||
338 | static int lp872x_buck_get_voltage_sel(struct regulator_dev *rdev) | |
339 | { | |
340 | struct lp872x *lp = rdev_get_drvdata(rdev); | |
341 | enum lp872x_regulator_id buck = rdev_get_id(rdev); | |
342 | u8 addr, val; | |
343 | int ret; | |
344 | ||
345 | addr = lp872x_select_buck_vout_addr(lp, buck); | |
346 | if (!lp872x_is_valid_buck_addr(addr)) | |
347 | return -EINVAL; | |
348 | ||
349 | ret = lp872x_read_byte(lp, addr, &val); | |
350 | if (ret) | |
351 | return ret; | |
352 | ||
353 | return val & LP872X_VOUT_M; | |
354 | } | |
355 | ||
356 | static int lp8725_buck_set_current_limit(struct regulator_dev *rdev, | |
357 | int min_uA, int max_uA) | |
358 | { | |
359 | struct lp872x *lp = rdev_get_drvdata(rdev); | |
360 | enum lp872x_regulator_id buck = rdev_get_id(rdev); | |
4e1d67ed AL |
361 | int i; |
362 | u8 addr; | |
af8b5fc3 KM |
363 | |
364 | switch (buck) { | |
365 | case LP8725_ID_BUCK1: | |
366 | addr = LP8725_BUCK1_VOUT2; | |
367 | break; | |
368 | case LP8725_ID_BUCK2: | |
369 | addr = LP8725_BUCK2_VOUT2; | |
370 | break; | |
371 | default: | |
372 | return -EINVAL; | |
373 | } | |
374 | ||
37a6f43d | 375 | for (i = ARRAY_SIZE(lp8725_buck_uA) - 1; i >= 0; i--) { |
af8b5fc3 KM |
376 | if (lp8725_buck_uA[i] >= min_uA && |
377 | lp8725_buck_uA[i] <= max_uA) | |
4e1d67ed AL |
378 | return lp872x_update_bits(lp, addr, |
379 | LP8725_BUCK_CL_M, | |
380 | i << LP8725_BUCK_CL_S); | |
381 | } | |
af8b5fc3 | 382 | |
4e1d67ed | 383 | return -EINVAL; |
af8b5fc3 KM |
384 | } |
385 | ||
386 | static int lp8725_buck_get_current_limit(struct regulator_dev *rdev) | |
387 | { | |
388 | struct lp872x *lp = rdev_get_drvdata(rdev); | |
389 | enum lp872x_regulator_id buck = rdev_get_id(rdev); | |
390 | u8 addr, val; | |
391 | int ret; | |
392 | ||
393 | switch (buck) { | |
394 | case LP8725_ID_BUCK1: | |
395 | addr = LP8725_BUCK1_VOUT2; | |
396 | break; | |
397 | case LP8725_ID_BUCK2: | |
398 | addr = LP8725_BUCK2_VOUT2; | |
399 | break; | |
400 | default: | |
401 | return -EINVAL; | |
402 | } | |
403 | ||
404 | ret = lp872x_read_byte(lp, addr, &val); | |
405 | if (ret) | |
406 | return ret; | |
407 | ||
408 | val = (val & LP8725_BUCK_CL_M) >> LP8725_BUCK_CL_S; | |
409 | ||
410 | return (val < ARRAY_SIZE(lp8725_buck_uA)) ? | |
411 | lp8725_buck_uA[val] : -EINVAL; | |
412 | } | |
413 | ||
414 | static int lp872x_buck_set_mode(struct regulator_dev *rdev, unsigned int mode) | |
415 | { | |
416 | struct lp872x *lp = rdev_get_drvdata(rdev); | |
417 | enum lp872x_regulator_id buck = rdev_get_id(rdev); | |
418 | u8 addr, mask, shift, val; | |
419 | ||
420 | switch (buck) { | |
421 | case LP8720_ID_BUCK: | |
422 | addr = LP8720_BUCK_VOUT2; | |
423 | mask = LP8720_BUCK_FPWM_M; | |
424 | shift = LP8720_BUCK_FPWM_S; | |
425 | break; | |
426 | case LP8725_ID_BUCK1: | |
427 | addr = LP8725_BUCK_CTRL; | |
428 | mask = LP8725_BUCK1_FPWM_M; | |
429 | shift = LP8725_BUCK1_FPWM_S; | |
430 | break; | |
431 | case LP8725_ID_BUCK2: | |
432 | addr = LP8725_BUCK_CTRL; | |
433 | mask = LP8725_BUCK2_FPWM_M; | |
434 | shift = LP8725_BUCK2_FPWM_S; | |
435 | break; | |
436 | default: | |
437 | return -EINVAL; | |
438 | } | |
439 | ||
440 | if (mode == REGULATOR_MODE_FAST) | |
441 | val = LP872X_FORCE_PWM << shift; | |
442 | else if (mode == REGULATOR_MODE_NORMAL) | |
443 | val = LP872X_AUTO_PWM << shift; | |
444 | else | |
445 | return -EINVAL; | |
446 | ||
447 | return lp872x_update_bits(lp, addr, mask, val); | |
448 | } | |
449 | ||
450 | static unsigned int lp872x_buck_get_mode(struct regulator_dev *rdev) | |
451 | { | |
452 | struct lp872x *lp = rdev_get_drvdata(rdev); | |
453 | enum lp872x_regulator_id buck = rdev_get_id(rdev); | |
454 | u8 addr, mask, val; | |
455 | int ret; | |
456 | ||
457 | switch (buck) { | |
458 | case LP8720_ID_BUCK: | |
459 | addr = LP8720_BUCK_VOUT2; | |
460 | mask = LP8720_BUCK_FPWM_M; | |
461 | break; | |
462 | case LP8725_ID_BUCK1: | |
463 | addr = LP8725_BUCK_CTRL; | |
464 | mask = LP8725_BUCK1_FPWM_M; | |
465 | break; | |
466 | case LP8725_ID_BUCK2: | |
467 | addr = LP8725_BUCK_CTRL; | |
468 | mask = LP8725_BUCK2_FPWM_M; | |
469 | break; | |
470 | default: | |
471 | return -EINVAL; | |
472 | } | |
473 | ||
474 | ret = lp872x_read_byte(lp, addr, &val); | |
475 | if (ret) | |
476 | return ret; | |
477 | ||
478 | return val & mask ? REGULATOR_MODE_FAST : REGULATOR_MODE_NORMAL; | |
479 | } | |
480 | ||
481 | static struct regulator_ops lp872x_ldo_ops = { | |
482 | .list_voltage = regulator_list_voltage_table, | |
a32f9e02 | 483 | .map_voltage = regulator_map_voltage_ascend, |
af8b5fc3 KM |
484 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
485 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
486 | .enable = regulator_enable_regmap, | |
487 | .disable = regulator_disable_regmap, | |
488 | .is_enabled = regulator_is_enabled_regmap, | |
489 | .enable_time = lp872x_regulator_enable_time, | |
490 | }; | |
491 | ||
492 | static struct regulator_ops lp8720_buck_ops = { | |
493 | .list_voltage = regulator_list_voltage_table, | |
a32f9e02 | 494 | .map_voltage = regulator_map_voltage_ascend, |
af8b5fc3 KM |
495 | .set_voltage_sel = lp872x_buck_set_voltage_sel, |
496 | .get_voltage_sel = lp872x_buck_get_voltage_sel, | |
497 | .enable = regulator_enable_regmap, | |
498 | .disable = regulator_disable_regmap, | |
499 | .is_enabled = regulator_is_enabled_regmap, | |
500 | .enable_time = lp872x_regulator_enable_time, | |
501 | .set_mode = lp872x_buck_set_mode, | |
502 | .get_mode = lp872x_buck_get_mode, | |
503 | }; | |
504 | ||
505 | static struct regulator_ops lp8725_buck_ops = { | |
506 | .list_voltage = regulator_list_voltage_table, | |
a32f9e02 | 507 | .map_voltage = regulator_map_voltage_ascend, |
af8b5fc3 KM |
508 | .set_voltage_sel = lp872x_buck_set_voltage_sel, |
509 | .get_voltage_sel = lp872x_buck_get_voltage_sel, | |
510 | .enable = regulator_enable_regmap, | |
511 | .disable = regulator_disable_regmap, | |
512 | .is_enabled = regulator_is_enabled_regmap, | |
513 | .enable_time = lp872x_regulator_enable_time, | |
514 | .set_mode = lp872x_buck_set_mode, | |
515 | .get_mode = lp872x_buck_get_mode, | |
516 | .set_current_limit = lp8725_buck_set_current_limit, | |
517 | .get_current_limit = lp8725_buck_get_current_limit, | |
518 | }; | |
519 | ||
520 | static struct regulator_desc lp8720_regulator_desc[] = { | |
521 | { | |
522 | .name = "ldo1", | |
1f97fe47 | 523 | .of_match = of_match_ptr("ldo1"), |
af8b5fc3 KM |
524 | .id = LP8720_ID_LDO1, |
525 | .ops = &lp872x_ldo_ops, | |
526 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
527 | .volt_table = lp872x_ldo_vtbl, | |
528 | .type = REGULATOR_VOLTAGE, | |
529 | .owner = THIS_MODULE, | |
530 | .vsel_reg = LP872X_LDO1_VOUT, | |
531 | .vsel_mask = LP872X_VOUT_M, | |
532 | .enable_reg = LP8720_ENABLE, | |
533 | .enable_mask = LP872X_EN_LDO1_M, | |
534 | }, | |
535 | { | |
536 | .name = "ldo2", | |
1f97fe47 | 537 | .of_match = of_match_ptr("ldo2"), |
af8b5fc3 KM |
538 | .id = LP8720_ID_LDO2, |
539 | .ops = &lp872x_ldo_ops, | |
540 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
541 | .volt_table = lp872x_ldo_vtbl, | |
542 | .type = REGULATOR_VOLTAGE, | |
543 | .owner = THIS_MODULE, | |
544 | .vsel_reg = LP872X_LDO2_VOUT, | |
545 | .vsel_mask = LP872X_VOUT_M, | |
546 | .enable_reg = LP8720_ENABLE, | |
547 | .enable_mask = LP872X_EN_LDO2_M, | |
548 | }, | |
549 | { | |
550 | .name = "ldo3", | |
1f97fe47 | 551 | .of_match = of_match_ptr("ldo3"), |
af8b5fc3 KM |
552 | .id = LP8720_ID_LDO3, |
553 | .ops = &lp872x_ldo_ops, | |
554 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
555 | .volt_table = lp872x_ldo_vtbl, | |
556 | .type = REGULATOR_VOLTAGE, | |
557 | .owner = THIS_MODULE, | |
558 | .vsel_reg = LP872X_LDO3_VOUT, | |
559 | .vsel_mask = LP872X_VOUT_M, | |
560 | .enable_reg = LP8720_ENABLE, | |
561 | .enable_mask = LP872X_EN_LDO3_M, | |
562 | }, | |
563 | { | |
564 | .name = "ldo4", | |
1f97fe47 | 565 | .of_match = of_match_ptr("ldo4"), |
af8b5fc3 KM |
566 | .id = LP8720_ID_LDO4, |
567 | .ops = &lp872x_ldo_ops, | |
568 | .n_voltages = ARRAY_SIZE(lp8720_ldo4_vtbl), | |
569 | .volt_table = lp8720_ldo4_vtbl, | |
570 | .type = REGULATOR_VOLTAGE, | |
571 | .owner = THIS_MODULE, | |
572 | .vsel_reg = LP872X_LDO4_VOUT, | |
573 | .vsel_mask = LP872X_VOUT_M, | |
574 | .enable_reg = LP8720_ENABLE, | |
575 | .enable_mask = LP872X_EN_LDO4_M, | |
576 | }, | |
577 | { | |
578 | .name = "ldo5", | |
1f97fe47 | 579 | .of_match = of_match_ptr("ldo5"), |
af8b5fc3 KM |
580 | .id = LP8720_ID_LDO5, |
581 | .ops = &lp872x_ldo_ops, | |
582 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
583 | .volt_table = lp872x_ldo_vtbl, | |
584 | .type = REGULATOR_VOLTAGE, | |
585 | .owner = THIS_MODULE, | |
586 | .vsel_reg = LP872X_LDO5_VOUT, | |
587 | .vsel_mask = LP872X_VOUT_M, | |
588 | .enable_reg = LP8720_ENABLE, | |
589 | .enable_mask = LP872X_EN_LDO5_M, | |
590 | }, | |
591 | { | |
592 | .name = "buck", | |
1f97fe47 | 593 | .of_match = of_match_ptr("buck"), |
af8b5fc3 KM |
594 | .id = LP8720_ID_BUCK, |
595 | .ops = &lp8720_buck_ops, | |
596 | .n_voltages = ARRAY_SIZE(lp8720_buck_vtbl), | |
597 | .volt_table = lp8720_buck_vtbl, | |
598 | .type = REGULATOR_VOLTAGE, | |
599 | .owner = THIS_MODULE, | |
600 | .enable_reg = LP8720_ENABLE, | |
601 | .enable_mask = LP8720_EN_BUCK_M, | |
602 | }, | |
603 | }; | |
604 | ||
605 | static struct regulator_desc lp8725_regulator_desc[] = { | |
606 | { | |
607 | .name = "ldo1", | |
1f97fe47 | 608 | .of_match = of_match_ptr("ldo1"), |
af8b5fc3 KM |
609 | .id = LP8725_ID_LDO1, |
610 | .ops = &lp872x_ldo_ops, | |
611 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
612 | .volt_table = lp872x_ldo_vtbl, | |
613 | .type = REGULATOR_VOLTAGE, | |
614 | .owner = THIS_MODULE, | |
615 | .vsel_reg = LP872X_LDO1_VOUT, | |
616 | .vsel_mask = LP872X_VOUT_M, | |
617 | .enable_reg = LP8725_LDO_CTRL, | |
618 | .enable_mask = LP872X_EN_LDO1_M, | |
619 | }, | |
620 | { | |
621 | .name = "ldo2", | |
1f97fe47 | 622 | .of_match = of_match_ptr("ldo2"), |
af8b5fc3 KM |
623 | .id = LP8725_ID_LDO2, |
624 | .ops = &lp872x_ldo_ops, | |
625 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
626 | .volt_table = lp872x_ldo_vtbl, | |
627 | .type = REGULATOR_VOLTAGE, | |
628 | .owner = THIS_MODULE, | |
629 | .vsel_reg = LP872X_LDO2_VOUT, | |
630 | .vsel_mask = LP872X_VOUT_M, | |
631 | .enable_reg = LP8725_LDO_CTRL, | |
632 | .enable_mask = LP872X_EN_LDO2_M, | |
633 | }, | |
634 | { | |
635 | .name = "ldo3", | |
1f97fe47 | 636 | .of_match = of_match_ptr("ldo3"), |
af8b5fc3 KM |
637 | .id = LP8725_ID_LDO3, |
638 | .ops = &lp872x_ldo_ops, | |
639 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
640 | .volt_table = lp872x_ldo_vtbl, | |
641 | .type = REGULATOR_VOLTAGE, | |
642 | .owner = THIS_MODULE, | |
643 | .vsel_reg = LP872X_LDO3_VOUT, | |
644 | .vsel_mask = LP872X_VOUT_M, | |
645 | .enable_reg = LP8725_LDO_CTRL, | |
646 | .enable_mask = LP872X_EN_LDO3_M, | |
647 | }, | |
648 | { | |
649 | .name = "ldo4", | |
1f97fe47 | 650 | .of_match = of_match_ptr("ldo4"), |
af8b5fc3 KM |
651 | .id = LP8725_ID_LDO4, |
652 | .ops = &lp872x_ldo_ops, | |
653 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
654 | .volt_table = lp872x_ldo_vtbl, | |
655 | .type = REGULATOR_VOLTAGE, | |
656 | .owner = THIS_MODULE, | |
657 | .vsel_reg = LP872X_LDO4_VOUT, | |
658 | .vsel_mask = LP872X_VOUT_M, | |
659 | .enable_reg = LP8725_LDO_CTRL, | |
660 | .enable_mask = LP872X_EN_LDO4_M, | |
661 | }, | |
662 | { | |
663 | .name = "ldo5", | |
1f97fe47 | 664 | .of_match = of_match_ptr("ldo5"), |
af8b5fc3 KM |
665 | .id = LP8725_ID_LDO5, |
666 | .ops = &lp872x_ldo_ops, | |
667 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
668 | .volt_table = lp872x_ldo_vtbl, | |
669 | .type = REGULATOR_VOLTAGE, | |
670 | .owner = THIS_MODULE, | |
671 | .vsel_reg = LP872X_LDO5_VOUT, | |
672 | .vsel_mask = LP872X_VOUT_M, | |
673 | .enable_reg = LP8725_LDO_CTRL, | |
674 | .enable_mask = LP872X_EN_LDO5_M, | |
675 | }, | |
676 | { | |
677 | .name = "lilo1", | |
1f97fe47 | 678 | .of_match = of_match_ptr("lilo1"), |
af8b5fc3 KM |
679 | .id = LP8725_ID_LILO1, |
680 | .ops = &lp872x_ldo_ops, | |
681 | .n_voltages = ARRAY_SIZE(lp8725_lilo_vtbl), | |
682 | .volt_table = lp8725_lilo_vtbl, | |
683 | .type = REGULATOR_VOLTAGE, | |
684 | .owner = THIS_MODULE, | |
685 | .vsel_reg = LP8725_LILO1_VOUT, | |
686 | .vsel_mask = LP872X_VOUT_M, | |
687 | .enable_reg = LP8725_LDO_CTRL, | |
688 | .enable_mask = LP8725_EN_LILO1_M, | |
689 | }, | |
690 | { | |
691 | .name = "lilo2", | |
1f97fe47 | 692 | .of_match = of_match_ptr("lilo2"), |
af8b5fc3 KM |
693 | .id = LP8725_ID_LILO2, |
694 | .ops = &lp872x_ldo_ops, | |
695 | .n_voltages = ARRAY_SIZE(lp8725_lilo_vtbl), | |
696 | .volt_table = lp8725_lilo_vtbl, | |
697 | .type = REGULATOR_VOLTAGE, | |
698 | .owner = THIS_MODULE, | |
699 | .vsel_reg = LP8725_LILO2_VOUT, | |
700 | .vsel_mask = LP872X_VOUT_M, | |
701 | .enable_reg = LP8725_LDO_CTRL, | |
702 | .enable_mask = LP8725_EN_LILO2_M, | |
703 | }, | |
704 | { | |
705 | .name = "buck1", | |
1f97fe47 | 706 | .of_match = of_match_ptr("buck1"), |
af8b5fc3 KM |
707 | .id = LP8725_ID_BUCK1, |
708 | .ops = &lp8725_buck_ops, | |
709 | .n_voltages = ARRAY_SIZE(lp8725_buck_vtbl), | |
710 | .volt_table = lp8725_buck_vtbl, | |
711 | .type = REGULATOR_VOLTAGE, | |
712 | .owner = THIS_MODULE, | |
713 | .enable_reg = LP872X_GENERAL_CFG, | |
714 | .enable_mask = LP8725_BUCK1_EN_M, | |
715 | }, | |
716 | { | |
717 | .name = "buck2", | |
1f97fe47 | 718 | .of_match = of_match_ptr("buck2"), |
af8b5fc3 KM |
719 | .id = LP8725_ID_BUCK2, |
720 | .ops = &lp8725_buck_ops, | |
721 | .n_voltages = ARRAY_SIZE(lp8725_buck_vtbl), | |
722 | .volt_table = lp8725_buck_vtbl, | |
723 | .type = REGULATOR_VOLTAGE, | |
724 | .owner = THIS_MODULE, | |
725 | .enable_reg = LP872X_GENERAL_CFG, | |
726 | .enable_mask = LP8725_BUCK2_EN_M, | |
727 | }, | |
728 | }; | |
729 | ||
af8b5fc3 KM |
730 | static int lp872x_init_dvs(struct lp872x *lp) |
731 | { | |
732 | int ret, gpio; | |
b158fba6 | 733 | struct lp872x_dvs *dvs = lp->pdata ? lp->pdata->dvs : NULL; |
af8b5fc3 | 734 | enum lp872x_dvs_state pinstate; |
b158fba6 KM |
735 | u8 mask[] = { LP8720_EXT_DVS_M, LP8725_DVS1_M | LP8725_DVS2_M }; |
736 | u8 default_dvs_mode[] = { LP8720_DEFAULT_DVS, LP8725_DEFAULT_DVS }; | |
737 | ||
738 | if (!dvs) | |
739 | goto set_default_dvs_mode; | |
af8b5fc3 | 740 | |
af8b5fc3 | 741 | gpio = dvs->gpio; |
690f44ba | 742 | if (!gpio_is_valid(gpio)) |
00fd6e61 | 743 | goto set_default_dvs_mode; |
af8b5fc3 KM |
744 | |
745 | pinstate = dvs->init_state; | |
746 | ret = devm_gpio_request_one(lp->dev, gpio, pinstate, "LP872X DVS"); | |
747 | if (ret) { | |
748 | dev_err(lp->dev, "gpio request err: %d\n", ret); | |
749 | return ret; | |
750 | } | |
751 | ||
752 | lp->dvs_pin = pinstate; | |
af8b5fc3 KM |
753 | |
754 | return 0; | |
b158fba6 KM |
755 | |
756 | set_default_dvs_mode: | |
757 | return lp872x_update_bits(lp, LP872X_GENERAL_CFG, mask[lp->chipid], | |
758 | default_dvs_mode[lp->chipid]); | |
af8b5fc3 KM |
759 | } |
760 | ||
7e6213f4 PK |
761 | static int lp872x_hw_enable(struct lp872x *lp) |
762 | { | |
763 | int ret, gpio; | |
764 | ||
765 | if (!lp->pdata) | |
766 | return -EINVAL; | |
767 | ||
768 | gpio = lp->pdata->enable_gpio; | |
769 | if (!gpio_is_valid(gpio)) | |
770 | return 0; | |
771 | ||
772 | /* Always set enable GPIO high. */ | |
773 | ret = devm_gpio_request_one(lp->dev, gpio, GPIOF_OUT_INIT_HIGH, "LP872X EN"); | |
774 | if (ret) { | |
775 | dev_err(lp->dev, "gpio request err: %d\n", ret); | |
776 | return ret; | |
777 | } | |
778 | ||
779 | /* Each chip has a different enable delay. */ | |
780 | if (lp->chipid == LP8720) | |
781 | usleep_range(LP8720_ENABLE_DELAY, 1.5 * LP8720_ENABLE_DELAY); | |
782 | else | |
783 | usleep_range(LP8725_ENABLE_DELAY, 1.5 * LP8725_ENABLE_DELAY); | |
784 | ||
785 | return 0; | |
786 | } | |
787 | ||
af8b5fc3 KM |
788 | static int lp872x_config(struct lp872x *lp) |
789 | { | |
790 | struct lp872x_platform_data *pdata = lp->pdata; | |
791 | int ret; | |
792 | ||
86b3fef0 KM |
793 | if (!pdata || !pdata->update_config) |
794 | goto init_dvs; | |
af8b5fc3 KM |
795 | |
796 | ret = lp872x_write_byte(lp, LP872X_GENERAL_CFG, pdata->general_config); | |
797 | if (ret) | |
798 | return ret; | |
799 | ||
86b3fef0 | 800 | init_dvs: |
af8b5fc3 KM |
801 | return lp872x_init_dvs(lp); |
802 | } | |
803 | ||
804 | static struct regulator_init_data | |
5bae0628 | 805 | *lp872x_find_regulator_init_data(int id, struct lp872x *lp) |
af8b5fc3 | 806 | { |
9ffaa868 | 807 | struct lp872x_platform_data *pdata = lp->pdata; |
5bae0628 | 808 | int i; |
af8b5fc3 | 809 | |
9ffaa868 KM |
810 | if (!pdata) |
811 | return NULL; | |
812 | ||
5bae0628 | 813 | for (i = 0; i < lp->num_regulators; i++) { |
9ffaa868 KM |
814 | if (pdata->regulator_data[i].id == id) |
815 | return pdata->regulator_data[i].init_data; | |
5bae0628 | 816 | } |
af8b5fc3 | 817 | |
5bae0628 | 818 | return NULL; |
af8b5fc3 KM |
819 | } |
820 | ||
821 | static int lp872x_regulator_register(struct lp872x *lp) | |
822 | { | |
823 | struct regulator_desc *desc; | |
824 | struct regulator_config cfg = { }; | |
825 | struct regulator_dev *rdev; | |
ed602534 | 826 | int i; |
af8b5fc3 | 827 | |
37a6f43d | 828 | for (i = 0; i < lp->num_regulators; i++) { |
af8b5fc3 KM |
829 | desc = (lp->chipid == LP8720) ? &lp8720_regulator_desc[i] : |
830 | &lp8725_regulator_desc[i]; | |
831 | ||
832 | cfg.dev = lp->dev; | |
5bae0628 | 833 | cfg.init_data = lp872x_find_regulator_init_data(desc->id, lp); |
af8b5fc3 KM |
834 | cfg.driver_data = lp; |
835 | cfg.regmap = lp->regmap; | |
836 | ||
ed602534 | 837 | rdev = devm_regulator_register(lp->dev, desc, &cfg); |
af8b5fc3 KM |
838 | if (IS_ERR(rdev)) { |
839 | dev_err(lp->dev, "regulator register err"); | |
ed602534 | 840 | return PTR_ERR(rdev); |
af8b5fc3 | 841 | } |
af8b5fc3 KM |
842 | } |
843 | ||
844 | return 0; | |
af8b5fc3 KM |
845 | } |
846 | ||
847 | static const struct regmap_config lp872x_regmap_config = { | |
848 | .reg_bits = 8, | |
849 | .val_bits = 8, | |
850 | .max_register = MAX_REGISTERS, | |
851 | }; | |
852 | ||
00fd6e61 KM |
853 | #ifdef CONFIG_OF |
854 | ||
855 | #define LP872X_VALID_OPMODE (REGULATOR_MODE_FAST | REGULATOR_MODE_NORMAL) | |
856 | ||
857 | static struct of_regulator_match lp8720_matches[] = { | |
858 | { .name = "ldo1", .driver_data = (void *)LP8720_ID_LDO1, }, | |
859 | { .name = "ldo2", .driver_data = (void *)LP8720_ID_LDO2, }, | |
860 | { .name = "ldo3", .driver_data = (void *)LP8720_ID_LDO3, }, | |
861 | { .name = "ldo4", .driver_data = (void *)LP8720_ID_LDO4, }, | |
862 | { .name = "ldo5", .driver_data = (void *)LP8720_ID_LDO5, }, | |
863 | { .name = "buck", .driver_data = (void *)LP8720_ID_BUCK, }, | |
864 | }; | |
865 | ||
866 | static struct of_regulator_match lp8725_matches[] = { | |
867 | { .name = "ldo1", .driver_data = (void *)LP8725_ID_LDO1, }, | |
868 | { .name = "ldo2", .driver_data = (void *)LP8725_ID_LDO2, }, | |
869 | { .name = "ldo3", .driver_data = (void *)LP8725_ID_LDO3, }, | |
870 | { .name = "ldo4", .driver_data = (void *)LP8725_ID_LDO4, }, | |
871 | { .name = "ldo5", .driver_data = (void *)LP8725_ID_LDO5, }, | |
872 | { .name = "lilo1", .driver_data = (void *)LP8725_ID_LILO1, }, | |
873 | { .name = "lilo2", .driver_data = (void *)LP8725_ID_LILO2, }, | |
874 | { .name = "buck1", .driver_data = (void *)LP8725_ID_BUCK1, }, | |
875 | { .name = "buck2", .driver_data = (void *)LP8725_ID_BUCK2, }, | |
876 | }; | |
877 | ||
878 | static struct lp872x_platform_data | |
879 | *lp872x_populate_pdata_from_dt(struct device *dev, enum lp872x_id which) | |
880 | { | |
881 | struct device_node *np = dev->of_node; | |
882 | struct lp872x_platform_data *pdata; | |
883 | struct of_regulator_match *match; | |
00fd6e61 KM |
884 | int num_matches; |
885 | int count; | |
886 | int i; | |
887 | u8 dvs_state; | |
888 | ||
889 | pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); | |
890 | if (!pdata) | |
804486b1 | 891 | return ERR_PTR(-ENOMEM); |
00fd6e61 KM |
892 | |
893 | of_property_read_u8(np, "ti,general-config", &pdata->general_config); | |
894 | if (of_find_property(np, "ti,update-config", NULL)) | |
895 | pdata->update_config = true; | |
896 | ||
897 | pdata->dvs = devm_kzalloc(dev, sizeof(struct lp872x_dvs), GFP_KERNEL); | |
898 | if (!pdata->dvs) | |
804486b1 | 899 | return ERR_PTR(-ENOMEM); |
00fd6e61 KM |
900 | |
901 | pdata->dvs->gpio = of_get_named_gpio(np, "ti,dvs-gpio", 0); | |
902 | of_property_read_u8(np, "ti,dvs-vsel", (u8 *)&pdata->dvs->vsel); | |
903 | of_property_read_u8(np, "ti,dvs-state", &dvs_state); | |
904 | pdata->dvs->init_state = dvs_state ? DVS_HIGH : DVS_LOW; | |
905 | ||
7e6213f4 PK |
906 | pdata->enable_gpio = of_get_named_gpio(np, "enable-gpios", 0); |
907 | ||
00fd6e61 KM |
908 | if (of_get_child_count(np) == 0) |
909 | goto out; | |
910 | ||
911 | switch (which) { | |
912 | case LP8720: | |
913 | match = lp8720_matches; | |
914 | num_matches = ARRAY_SIZE(lp8720_matches); | |
915 | break; | |
916 | case LP8725: | |
917 | match = lp8725_matches; | |
918 | num_matches = ARRAY_SIZE(lp8725_matches); | |
919 | break; | |
920 | default: | |
921 | goto out; | |
922 | } | |
923 | ||
924 | count = of_regulator_match(dev, np, match, num_matches); | |
925 | if (count <= 0) | |
926 | goto out; | |
927 | ||
928 | for (i = 0; i < num_matches; i++) { | |
37a6f43d MK |
929 | pdata->regulator_data[i].id = |
930 | (enum lp872x_regulator_id)match[i].driver_data; | |
00fd6e61 | 931 | pdata->regulator_data[i].init_data = match[i].init_data; |
00fd6e61 KM |
932 | } |
933 | out: | |
934 | return pdata; | |
935 | } | |
936 | #else | |
937 | static struct lp872x_platform_data | |
938 | *lp872x_populate_pdata_from_dt(struct device *dev, enum lp872x_id which) | |
939 | { | |
940 | return NULL; | |
941 | } | |
942 | #endif | |
943 | ||
af8b5fc3 KM |
944 | static int lp872x_probe(struct i2c_client *cl, const struct i2c_device_id *id) |
945 | { | |
946 | struct lp872x *lp; | |
d9ffae15 | 947 | struct lp872x_platform_data *pdata; |
8538c407 | 948 | int ret; |
af8b5fc3 KM |
949 | const int lp872x_num_regulators[] = { |
950 | [LP8720] = LP8720_NUM_REGULATORS, | |
951 | [LP8725] = LP8725_NUM_REGULATORS, | |
952 | }; | |
953 | ||
804486b1 | 954 | if (cl->dev.of_node) { |
d9ffae15 | 955 | pdata = lp872x_populate_pdata_from_dt(&cl->dev, |
00fd6e61 | 956 | (enum lp872x_id)id->driver_data); |
804486b1 MK |
957 | if (IS_ERR(pdata)) |
958 | return PTR_ERR(pdata); | |
959 | } else { | |
d9ffae15 | 960 | pdata = dev_get_platdata(&cl->dev); |
804486b1 | 961 | } |
00fd6e61 | 962 | |
af8b5fc3 KM |
963 | lp = devm_kzalloc(&cl->dev, sizeof(struct lp872x), GFP_KERNEL); |
964 | if (!lp) | |
8538c407 | 965 | return -ENOMEM; |
af8b5fc3 | 966 | |
8538c407 | 967 | lp->num_regulators = lp872x_num_regulators[id->driver_data]; |
af8b5fc3 KM |
968 | |
969 | lp->regmap = devm_regmap_init_i2c(cl, &lp872x_regmap_config); | |
970 | if (IS_ERR(lp->regmap)) { | |
971 | ret = PTR_ERR(lp->regmap); | |
972 | dev_err(&cl->dev, "regmap init i2c err: %d\n", ret); | |
8538c407 | 973 | return ret; |
af8b5fc3 KM |
974 | } |
975 | ||
976 | lp->dev = &cl->dev; | |
d9ffae15 | 977 | lp->pdata = pdata; |
af8b5fc3 | 978 | lp->chipid = id->driver_data; |
af8b5fc3 KM |
979 | i2c_set_clientdata(cl, lp); |
980 | ||
7e6213f4 PK |
981 | ret = lp872x_hw_enable(lp); |
982 | if (ret) | |
983 | return ret; | |
984 | ||
af8b5fc3 KM |
985 | ret = lp872x_config(lp); |
986 | if (ret) | |
8538c407 | 987 | return ret; |
af8b5fc3 KM |
988 | |
989 | return lp872x_regulator_register(lp); | |
af8b5fc3 KM |
990 | } |
991 | ||
00fd6e61 KM |
992 | static const struct of_device_id lp872x_dt_ids[] = { |
993 | { .compatible = "ti,lp8720", }, | |
994 | { .compatible = "ti,lp8725", }, | |
995 | { } | |
996 | }; | |
997 | MODULE_DEVICE_TABLE(of, lp872x_dt_ids); | |
998 | ||
af8b5fc3 KM |
999 | static const struct i2c_device_id lp872x_ids[] = { |
1000 | {"lp8720", LP8720}, | |
1001 | {"lp8725", LP8725}, | |
1002 | { } | |
1003 | }; | |
1004 | MODULE_DEVICE_TABLE(i2c, lp872x_ids); | |
1005 | ||
1006 | static struct i2c_driver lp872x_driver = { | |
1007 | .driver = { | |
1008 | .name = "lp872x", | |
00fd6e61 | 1009 | .of_match_table = of_match_ptr(lp872x_dt_ids), |
af8b5fc3 KM |
1010 | }, |
1011 | .probe = lp872x_probe, | |
af8b5fc3 KM |
1012 | .id_table = lp872x_ids, |
1013 | }; | |
1014 | ||
1015 | module_i2c_driver(lp872x_driver); | |
1016 | ||
1017 | MODULE_DESCRIPTION("TI/National Semiconductor LP872x PMU Regulator Driver"); | |
1018 | MODULE_AUTHOR("Milo Kim"); | |
1019 | MODULE_LICENSE("GPL"); |