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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 | ||
af8b5fc3 KM |
356 | static int lp872x_buck_set_mode(struct regulator_dev *rdev, unsigned int mode) |
357 | { | |
358 | struct lp872x *lp = rdev_get_drvdata(rdev); | |
359 | enum lp872x_regulator_id buck = rdev_get_id(rdev); | |
360 | u8 addr, mask, shift, val; | |
361 | ||
362 | switch (buck) { | |
363 | case LP8720_ID_BUCK: | |
364 | addr = LP8720_BUCK_VOUT2; | |
365 | mask = LP8720_BUCK_FPWM_M; | |
366 | shift = LP8720_BUCK_FPWM_S; | |
367 | break; | |
368 | case LP8725_ID_BUCK1: | |
369 | addr = LP8725_BUCK_CTRL; | |
370 | mask = LP8725_BUCK1_FPWM_M; | |
371 | shift = LP8725_BUCK1_FPWM_S; | |
372 | break; | |
373 | case LP8725_ID_BUCK2: | |
374 | addr = LP8725_BUCK_CTRL; | |
375 | mask = LP8725_BUCK2_FPWM_M; | |
376 | shift = LP8725_BUCK2_FPWM_S; | |
377 | break; | |
378 | default: | |
379 | return -EINVAL; | |
380 | } | |
381 | ||
382 | if (mode == REGULATOR_MODE_FAST) | |
383 | val = LP872X_FORCE_PWM << shift; | |
384 | else if (mode == REGULATOR_MODE_NORMAL) | |
385 | val = LP872X_AUTO_PWM << shift; | |
386 | else | |
387 | return -EINVAL; | |
388 | ||
389 | return lp872x_update_bits(lp, addr, mask, val); | |
390 | } | |
391 | ||
392 | static unsigned int lp872x_buck_get_mode(struct regulator_dev *rdev) | |
393 | { | |
394 | struct lp872x *lp = rdev_get_drvdata(rdev); | |
395 | enum lp872x_regulator_id buck = rdev_get_id(rdev); | |
396 | u8 addr, mask, val; | |
397 | int ret; | |
398 | ||
399 | switch (buck) { | |
400 | case LP8720_ID_BUCK: | |
401 | addr = LP8720_BUCK_VOUT2; | |
402 | mask = LP8720_BUCK_FPWM_M; | |
403 | break; | |
404 | case LP8725_ID_BUCK1: | |
405 | addr = LP8725_BUCK_CTRL; | |
406 | mask = LP8725_BUCK1_FPWM_M; | |
407 | break; | |
408 | case LP8725_ID_BUCK2: | |
409 | addr = LP8725_BUCK_CTRL; | |
410 | mask = LP8725_BUCK2_FPWM_M; | |
411 | break; | |
412 | default: | |
413 | return -EINVAL; | |
414 | } | |
415 | ||
416 | ret = lp872x_read_byte(lp, addr, &val); | |
417 | if (ret) | |
418 | return ret; | |
419 | ||
420 | return val & mask ? REGULATOR_MODE_FAST : REGULATOR_MODE_NORMAL; | |
421 | } | |
422 | ||
f966404f | 423 | static const struct regulator_ops lp872x_ldo_ops = { |
af8b5fc3 | 424 | .list_voltage = regulator_list_voltage_table, |
a32f9e02 | 425 | .map_voltage = regulator_map_voltage_ascend, |
af8b5fc3 KM |
426 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
427 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
428 | .enable = regulator_enable_regmap, | |
429 | .disable = regulator_disable_regmap, | |
430 | .is_enabled = regulator_is_enabled_regmap, | |
431 | .enable_time = lp872x_regulator_enable_time, | |
432 | }; | |
433 | ||
f966404f | 434 | static const struct regulator_ops lp8720_buck_ops = { |
af8b5fc3 | 435 | .list_voltage = regulator_list_voltage_table, |
a32f9e02 | 436 | .map_voltage = regulator_map_voltage_ascend, |
af8b5fc3 KM |
437 | .set_voltage_sel = lp872x_buck_set_voltage_sel, |
438 | .get_voltage_sel = lp872x_buck_get_voltage_sel, | |
439 | .enable = regulator_enable_regmap, | |
440 | .disable = regulator_disable_regmap, | |
441 | .is_enabled = regulator_is_enabled_regmap, | |
442 | .enable_time = lp872x_regulator_enable_time, | |
443 | .set_mode = lp872x_buck_set_mode, | |
444 | .get_mode = lp872x_buck_get_mode, | |
445 | }; | |
446 | ||
f966404f | 447 | static const struct regulator_ops lp8725_buck_ops = { |
af8b5fc3 | 448 | .list_voltage = regulator_list_voltage_table, |
a32f9e02 | 449 | .map_voltage = regulator_map_voltage_ascend, |
af8b5fc3 KM |
450 | .set_voltage_sel = lp872x_buck_set_voltage_sel, |
451 | .get_voltage_sel = lp872x_buck_get_voltage_sel, | |
452 | .enable = regulator_enable_regmap, | |
453 | .disable = regulator_disable_regmap, | |
454 | .is_enabled = regulator_is_enabled_regmap, | |
455 | .enable_time = lp872x_regulator_enable_time, | |
456 | .set_mode = lp872x_buck_set_mode, | |
457 | .get_mode = lp872x_buck_get_mode, | |
8918f068 AL |
458 | .set_current_limit = regulator_set_current_limit_regmap, |
459 | .get_current_limit = regulator_get_current_limit_regmap, | |
af8b5fc3 KM |
460 | }; |
461 | ||
f966404f | 462 | static const struct regulator_desc lp8720_regulator_desc[] = { |
af8b5fc3 KM |
463 | { |
464 | .name = "ldo1", | |
1f97fe47 | 465 | .of_match = of_match_ptr("ldo1"), |
af8b5fc3 KM |
466 | .id = LP8720_ID_LDO1, |
467 | .ops = &lp872x_ldo_ops, | |
468 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
469 | .volt_table = lp872x_ldo_vtbl, | |
470 | .type = REGULATOR_VOLTAGE, | |
471 | .owner = THIS_MODULE, | |
472 | .vsel_reg = LP872X_LDO1_VOUT, | |
473 | .vsel_mask = LP872X_VOUT_M, | |
474 | .enable_reg = LP8720_ENABLE, | |
475 | .enable_mask = LP872X_EN_LDO1_M, | |
476 | }, | |
477 | { | |
478 | .name = "ldo2", | |
1f97fe47 | 479 | .of_match = of_match_ptr("ldo2"), |
af8b5fc3 KM |
480 | .id = LP8720_ID_LDO2, |
481 | .ops = &lp872x_ldo_ops, | |
482 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
483 | .volt_table = lp872x_ldo_vtbl, | |
484 | .type = REGULATOR_VOLTAGE, | |
485 | .owner = THIS_MODULE, | |
486 | .vsel_reg = LP872X_LDO2_VOUT, | |
487 | .vsel_mask = LP872X_VOUT_M, | |
488 | .enable_reg = LP8720_ENABLE, | |
489 | .enable_mask = LP872X_EN_LDO2_M, | |
490 | }, | |
491 | { | |
492 | .name = "ldo3", | |
1f97fe47 | 493 | .of_match = of_match_ptr("ldo3"), |
af8b5fc3 KM |
494 | .id = LP8720_ID_LDO3, |
495 | .ops = &lp872x_ldo_ops, | |
496 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
497 | .volt_table = lp872x_ldo_vtbl, | |
498 | .type = REGULATOR_VOLTAGE, | |
499 | .owner = THIS_MODULE, | |
500 | .vsel_reg = LP872X_LDO3_VOUT, | |
501 | .vsel_mask = LP872X_VOUT_M, | |
502 | .enable_reg = LP8720_ENABLE, | |
503 | .enable_mask = LP872X_EN_LDO3_M, | |
504 | }, | |
505 | { | |
506 | .name = "ldo4", | |
1f97fe47 | 507 | .of_match = of_match_ptr("ldo4"), |
af8b5fc3 KM |
508 | .id = LP8720_ID_LDO4, |
509 | .ops = &lp872x_ldo_ops, | |
510 | .n_voltages = ARRAY_SIZE(lp8720_ldo4_vtbl), | |
511 | .volt_table = lp8720_ldo4_vtbl, | |
512 | .type = REGULATOR_VOLTAGE, | |
513 | .owner = THIS_MODULE, | |
514 | .vsel_reg = LP872X_LDO4_VOUT, | |
515 | .vsel_mask = LP872X_VOUT_M, | |
516 | .enable_reg = LP8720_ENABLE, | |
517 | .enable_mask = LP872X_EN_LDO4_M, | |
518 | }, | |
519 | { | |
520 | .name = "ldo5", | |
1f97fe47 | 521 | .of_match = of_match_ptr("ldo5"), |
af8b5fc3 KM |
522 | .id = LP8720_ID_LDO5, |
523 | .ops = &lp872x_ldo_ops, | |
524 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
525 | .volt_table = lp872x_ldo_vtbl, | |
526 | .type = REGULATOR_VOLTAGE, | |
527 | .owner = THIS_MODULE, | |
528 | .vsel_reg = LP872X_LDO5_VOUT, | |
529 | .vsel_mask = LP872X_VOUT_M, | |
530 | .enable_reg = LP8720_ENABLE, | |
531 | .enable_mask = LP872X_EN_LDO5_M, | |
532 | }, | |
533 | { | |
534 | .name = "buck", | |
1f97fe47 | 535 | .of_match = of_match_ptr("buck"), |
af8b5fc3 KM |
536 | .id = LP8720_ID_BUCK, |
537 | .ops = &lp8720_buck_ops, | |
538 | .n_voltages = ARRAY_SIZE(lp8720_buck_vtbl), | |
539 | .volt_table = lp8720_buck_vtbl, | |
540 | .type = REGULATOR_VOLTAGE, | |
541 | .owner = THIS_MODULE, | |
542 | .enable_reg = LP8720_ENABLE, | |
543 | .enable_mask = LP8720_EN_BUCK_M, | |
544 | }, | |
545 | }; | |
546 | ||
f966404f | 547 | static const struct regulator_desc lp8725_regulator_desc[] = { |
af8b5fc3 KM |
548 | { |
549 | .name = "ldo1", | |
1f97fe47 | 550 | .of_match = of_match_ptr("ldo1"), |
af8b5fc3 KM |
551 | .id = LP8725_ID_LDO1, |
552 | .ops = &lp872x_ldo_ops, | |
553 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
554 | .volt_table = lp872x_ldo_vtbl, | |
555 | .type = REGULATOR_VOLTAGE, | |
556 | .owner = THIS_MODULE, | |
557 | .vsel_reg = LP872X_LDO1_VOUT, | |
558 | .vsel_mask = LP872X_VOUT_M, | |
559 | .enable_reg = LP8725_LDO_CTRL, | |
560 | .enable_mask = LP872X_EN_LDO1_M, | |
561 | }, | |
562 | { | |
563 | .name = "ldo2", | |
1f97fe47 | 564 | .of_match = of_match_ptr("ldo2"), |
af8b5fc3 KM |
565 | .id = LP8725_ID_LDO2, |
566 | .ops = &lp872x_ldo_ops, | |
567 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
568 | .volt_table = lp872x_ldo_vtbl, | |
569 | .type = REGULATOR_VOLTAGE, | |
570 | .owner = THIS_MODULE, | |
571 | .vsel_reg = LP872X_LDO2_VOUT, | |
572 | .vsel_mask = LP872X_VOUT_M, | |
573 | .enable_reg = LP8725_LDO_CTRL, | |
574 | .enable_mask = LP872X_EN_LDO2_M, | |
575 | }, | |
576 | { | |
577 | .name = "ldo3", | |
1f97fe47 | 578 | .of_match = of_match_ptr("ldo3"), |
af8b5fc3 KM |
579 | .id = LP8725_ID_LDO3, |
580 | .ops = &lp872x_ldo_ops, | |
581 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
582 | .volt_table = lp872x_ldo_vtbl, | |
583 | .type = REGULATOR_VOLTAGE, | |
584 | .owner = THIS_MODULE, | |
585 | .vsel_reg = LP872X_LDO3_VOUT, | |
586 | .vsel_mask = LP872X_VOUT_M, | |
587 | .enable_reg = LP8725_LDO_CTRL, | |
588 | .enable_mask = LP872X_EN_LDO3_M, | |
589 | }, | |
590 | { | |
591 | .name = "ldo4", | |
1f97fe47 | 592 | .of_match = of_match_ptr("ldo4"), |
af8b5fc3 KM |
593 | .id = LP8725_ID_LDO4, |
594 | .ops = &lp872x_ldo_ops, | |
595 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
596 | .volt_table = lp872x_ldo_vtbl, | |
597 | .type = REGULATOR_VOLTAGE, | |
598 | .owner = THIS_MODULE, | |
599 | .vsel_reg = LP872X_LDO4_VOUT, | |
600 | .vsel_mask = LP872X_VOUT_M, | |
601 | .enable_reg = LP8725_LDO_CTRL, | |
602 | .enable_mask = LP872X_EN_LDO4_M, | |
603 | }, | |
604 | { | |
605 | .name = "ldo5", | |
1f97fe47 | 606 | .of_match = of_match_ptr("ldo5"), |
af8b5fc3 KM |
607 | .id = LP8725_ID_LDO5, |
608 | .ops = &lp872x_ldo_ops, | |
609 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
610 | .volt_table = lp872x_ldo_vtbl, | |
611 | .type = REGULATOR_VOLTAGE, | |
612 | .owner = THIS_MODULE, | |
613 | .vsel_reg = LP872X_LDO5_VOUT, | |
614 | .vsel_mask = LP872X_VOUT_M, | |
615 | .enable_reg = LP8725_LDO_CTRL, | |
616 | .enable_mask = LP872X_EN_LDO5_M, | |
617 | }, | |
618 | { | |
619 | .name = "lilo1", | |
1f97fe47 | 620 | .of_match = of_match_ptr("lilo1"), |
af8b5fc3 KM |
621 | .id = LP8725_ID_LILO1, |
622 | .ops = &lp872x_ldo_ops, | |
623 | .n_voltages = ARRAY_SIZE(lp8725_lilo_vtbl), | |
624 | .volt_table = lp8725_lilo_vtbl, | |
625 | .type = REGULATOR_VOLTAGE, | |
626 | .owner = THIS_MODULE, | |
627 | .vsel_reg = LP8725_LILO1_VOUT, | |
628 | .vsel_mask = LP872X_VOUT_M, | |
629 | .enable_reg = LP8725_LDO_CTRL, | |
630 | .enable_mask = LP8725_EN_LILO1_M, | |
631 | }, | |
632 | { | |
633 | .name = "lilo2", | |
1f97fe47 | 634 | .of_match = of_match_ptr("lilo2"), |
af8b5fc3 KM |
635 | .id = LP8725_ID_LILO2, |
636 | .ops = &lp872x_ldo_ops, | |
637 | .n_voltages = ARRAY_SIZE(lp8725_lilo_vtbl), | |
638 | .volt_table = lp8725_lilo_vtbl, | |
639 | .type = REGULATOR_VOLTAGE, | |
640 | .owner = THIS_MODULE, | |
641 | .vsel_reg = LP8725_LILO2_VOUT, | |
642 | .vsel_mask = LP872X_VOUT_M, | |
643 | .enable_reg = LP8725_LDO_CTRL, | |
644 | .enable_mask = LP8725_EN_LILO2_M, | |
645 | }, | |
646 | { | |
647 | .name = "buck1", | |
1f97fe47 | 648 | .of_match = of_match_ptr("buck1"), |
af8b5fc3 KM |
649 | .id = LP8725_ID_BUCK1, |
650 | .ops = &lp8725_buck_ops, | |
651 | .n_voltages = ARRAY_SIZE(lp8725_buck_vtbl), | |
652 | .volt_table = lp8725_buck_vtbl, | |
653 | .type = REGULATOR_VOLTAGE, | |
654 | .owner = THIS_MODULE, | |
655 | .enable_reg = LP872X_GENERAL_CFG, | |
656 | .enable_mask = LP8725_BUCK1_EN_M, | |
8918f068 AL |
657 | .curr_table = lp8725_buck_uA, |
658 | .n_current_limits = ARRAY_SIZE(lp8725_buck_uA), | |
659 | .csel_reg = LP8725_BUCK1_VOUT2, | |
660 | .csel_mask = LP8725_BUCK_CL_M, | |
af8b5fc3 KM |
661 | }, |
662 | { | |
663 | .name = "buck2", | |
1f97fe47 | 664 | .of_match = of_match_ptr("buck2"), |
af8b5fc3 KM |
665 | .id = LP8725_ID_BUCK2, |
666 | .ops = &lp8725_buck_ops, | |
667 | .n_voltages = ARRAY_SIZE(lp8725_buck_vtbl), | |
668 | .volt_table = lp8725_buck_vtbl, | |
669 | .type = REGULATOR_VOLTAGE, | |
670 | .owner = THIS_MODULE, | |
671 | .enable_reg = LP872X_GENERAL_CFG, | |
672 | .enable_mask = LP8725_BUCK2_EN_M, | |
8918f068 AL |
673 | .curr_table = lp8725_buck_uA, |
674 | .n_current_limits = ARRAY_SIZE(lp8725_buck_uA), | |
675 | .csel_reg = LP8725_BUCK2_VOUT2, | |
676 | .csel_mask = LP8725_BUCK_CL_M, | |
af8b5fc3 KM |
677 | }, |
678 | }; | |
679 | ||
af8b5fc3 KM |
680 | static int lp872x_init_dvs(struct lp872x *lp) |
681 | { | |
682 | int ret, gpio; | |
b158fba6 | 683 | struct lp872x_dvs *dvs = lp->pdata ? lp->pdata->dvs : NULL; |
af8b5fc3 | 684 | enum lp872x_dvs_state pinstate; |
b158fba6 KM |
685 | u8 mask[] = { LP8720_EXT_DVS_M, LP8725_DVS1_M | LP8725_DVS2_M }; |
686 | u8 default_dvs_mode[] = { LP8720_DEFAULT_DVS, LP8725_DEFAULT_DVS }; | |
687 | ||
688 | if (!dvs) | |
689 | goto set_default_dvs_mode; | |
af8b5fc3 | 690 | |
af8b5fc3 | 691 | gpio = dvs->gpio; |
690f44ba | 692 | if (!gpio_is_valid(gpio)) |
00fd6e61 | 693 | goto set_default_dvs_mode; |
af8b5fc3 KM |
694 | |
695 | pinstate = dvs->init_state; | |
696 | ret = devm_gpio_request_one(lp->dev, gpio, pinstate, "LP872X DVS"); | |
697 | if (ret) { | |
698 | dev_err(lp->dev, "gpio request err: %d\n", ret); | |
699 | return ret; | |
700 | } | |
701 | ||
702 | lp->dvs_pin = pinstate; | |
af8b5fc3 KM |
703 | |
704 | return 0; | |
b158fba6 KM |
705 | |
706 | set_default_dvs_mode: | |
707 | return lp872x_update_bits(lp, LP872X_GENERAL_CFG, mask[lp->chipid], | |
708 | default_dvs_mode[lp->chipid]); | |
af8b5fc3 KM |
709 | } |
710 | ||
7e6213f4 PK |
711 | static int lp872x_hw_enable(struct lp872x *lp) |
712 | { | |
713 | int ret, gpio; | |
714 | ||
715 | if (!lp->pdata) | |
716 | return -EINVAL; | |
717 | ||
718 | gpio = lp->pdata->enable_gpio; | |
719 | if (!gpio_is_valid(gpio)) | |
720 | return 0; | |
721 | ||
722 | /* Always set enable GPIO high. */ | |
723 | ret = devm_gpio_request_one(lp->dev, gpio, GPIOF_OUT_INIT_HIGH, "LP872X EN"); | |
724 | if (ret) { | |
725 | dev_err(lp->dev, "gpio request err: %d\n", ret); | |
726 | return ret; | |
727 | } | |
728 | ||
729 | /* Each chip has a different enable delay. */ | |
730 | if (lp->chipid == LP8720) | |
731 | usleep_range(LP8720_ENABLE_DELAY, 1.5 * LP8720_ENABLE_DELAY); | |
732 | else | |
733 | usleep_range(LP8725_ENABLE_DELAY, 1.5 * LP8725_ENABLE_DELAY); | |
734 | ||
735 | return 0; | |
736 | } | |
737 | ||
af8b5fc3 KM |
738 | static int lp872x_config(struct lp872x *lp) |
739 | { | |
740 | struct lp872x_platform_data *pdata = lp->pdata; | |
741 | int ret; | |
742 | ||
86b3fef0 KM |
743 | if (!pdata || !pdata->update_config) |
744 | goto init_dvs; | |
af8b5fc3 KM |
745 | |
746 | ret = lp872x_write_byte(lp, LP872X_GENERAL_CFG, pdata->general_config); | |
747 | if (ret) | |
748 | return ret; | |
749 | ||
86b3fef0 | 750 | init_dvs: |
af8b5fc3 KM |
751 | return lp872x_init_dvs(lp); |
752 | } | |
753 | ||
754 | static struct regulator_init_data | |
5bae0628 | 755 | *lp872x_find_regulator_init_data(int id, struct lp872x *lp) |
af8b5fc3 | 756 | { |
9ffaa868 | 757 | struct lp872x_platform_data *pdata = lp->pdata; |
5bae0628 | 758 | int i; |
af8b5fc3 | 759 | |
9ffaa868 KM |
760 | if (!pdata) |
761 | return NULL; | |
762 | ||
5bae0628 | 763 | for (i = 0; i < lp->num_regulators; i++) { |
9ffaa868 KM |
764 | if (pdata->regulator_data[i].id == id) |
765 | return pdata->regulator_data[i].init_data; | |
5bae0628 | 766 | } |
af8b5fc3 | 767 | |
5bae0628 | 768 | return NULL; |
af8b5fc3 KM |
769 | } |
770 | ||
771 | static int lp872x_regulator_register(struct lp872x *lp) | |
772 | { | |
f966404f | 773 | const struct regulator_desc *desc; |
af8b5fc3 KM |
774 | struct regulator_config cfg = { }; |
775 | struct regulator_dev *rdev; | |
ed602534 | 776 | int i; |
af8b5fc3 | 777 | |
37a6f43d | 778 | for (i = 0; i < lp->num_regulators; i++) { |
af8b5fc3 KM |
779 | desc = (lp->chipid == LP8720) ? &lp8720_regulator_desc[i] : |
780 | &lp8725_regulator_desc[i]; | |
781 | ||
782 | cfg.dev = lp->dev; | |
5bae0628 | 783 | cfg.init_data = lp872x_find_regulator_init_data(desc->id, lp); |
af8b5fc3 KM |
784 | cfg.driver_data = lp; |
785 | cfg.regmap = lp->regmap; | |
786 | ||
ed602534 | 787 | rdev = devm_regulator_register(lp->dev, desc, &cfg); |
af8b5fc3 KM |
788 | if (IS_ERR(rdev)) { |
789 | dev_err(lp->dev, "regulator register err"); | |
ed602534 | 790 | return PTR_ERR(rdev); |
af8b5fc3 | 791 | } |
af8b5fc3 KM |
792 | } |
793 | ||
794 | return 0; | |
af8b5fc3 KM |
795 | } |
796 | ||
797 | static const struct regmap_config lp872x_regmap_config = { | |
798 | .reg_bits = 8, | |
799 | .val_bits = 8, | |
800 | .max_register = MAX_REGISTERS, | |
801 | }; | |
802 | ||
00fd6e61 KM |
803 | #ifdef CONFIG_OF |
804 | ||
805 | #define LP872X_VALID_OPMODE (REGULATOR_MODE_FAST | REGULATOR_MODE_NORMAL) | |
806 | ||
807 | static struct of_regulator_match lp8720_matches[] = { | |
808 | { .name = "ldo1", .driver_data = (void *)LP8720_ID_LDO1, }, | |
809 | { .name = "ldo2", .driver_data = (void *)LP8720_ID_LDO2, }, | |
810 | { .name = "ldo3", .driver_data = (void *)LP8720_ID_LDO3, }, | |
811 | { .name = "ldo4", .driver_data = (void *)LP8720_ID_LDO4, }, | |
812 | { .name = "ldo5", .driver_data = (void *)LP8720_ID_LDO5, }, | |
813 | { .name = "buck", .driver_data = (void *)LP8720_ID_BUCK, }, | |
814 | }; | |
815 | ||
816 | static struct of_regulator_match lp8725_matches[] = { | |
817 | { .name = "ldo1", .driver_data = (void *)LP8725_ID_LDO1, }, | |
818 | { .name = "ldo2", .driver_data = (void *)LP8725_ID_LDO2, }, | |
819 | { .name = "ldo3", .driver_data = (void *)LP8725_ID_LDO3, }, | |
820 | { .name = "ldo4", .driver_data = (void *)LP8725_ID_LDO4, }, | |
821 | { .name = "ldo5", .driver_data = (void *)LP8725_ID_LDO5, }, | |
822 | { .name = "lilo1", .driver_data = (void *)LP8725_ID_LILO1, }, | |
823 | { .name = "lilo2", .driver_data = (void *)LP8725_ID_LILO2, }, | |
824 | { .name = "buck1", .driver_data = (void *)LP8725_ID_BUCK1, }, | |
825 | { .name = "buck2", .driver_data = (void *)LP8725_ID_BUCK2, }, | |
826 | }; | |
827 | ||
828 | static struct lp872x_platform_data | |
829 | *lp872x_populate_pdata_from_dt(struct device *dev, enum lp872x_id which) | |
830 | { | |
831 | struct device_node *np = dev->of_node; | |
832 | struct lp872x_platform_data *pdata; | |
833 | struct of_regulator_match *match; | |
00fd6e61 KM |
834 | int num_matches; |
835 | int count; | |
836 | int i; | |
837 | u8 dvs_state; | |
838 | ||
839 | pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); | |
840 | if (!pdata) | |
804486b1 | 841 | return ERR_PTR(-ENOMEM); |
00fd6e61 KM |
842 | |
843 | of_property_read_u8(np, "ti,general-config", &pdata->general_config); | |
844 | if (of_find_property(np, "ti,update-config", NULL)) | |
845 | pdata->update_config = true; | |
846 | ||
847 | pdata->dvs = devm_kzalloc(dev, sizeof(struct lp872x_dvs), GFP_KERNEL); | |
848 | if (!pdata->dvs) | |
804486b1 | 849 | return ERR_PTR(-ENOMEM); |
00fd6e61 KM |
850 | |
851 | pdata->dvs->gpio = of_get_named_gpio(np, "ti,dvs-gpio", 0); | |
852 | of_property_read_u8(np, "ti,dvs-vsel", (u8 *)&pdata->dvs->vsel); | |
853 | of_property_read_u8(np, "ti,dvs-state", &dvs_state); | |
854 | pdata->dvs->init_state = dvs_state ? DVS_HIGH : DVS_LOW; | |
855 | ||
7e6213f4 PK |
856 | pdata->enable_gpio = of_get_named_gpio(np, "enable-gpios", 0); |
857 | ||
00fd6e61 KM |
858 | if (of_get_child_count(np) == 0) |
859 | goto out; | |
860 | ||
861 | switch (which) { | |
862 | case LP8720: | |
863 | match = lp8720_matches; | |
864 | num_matches = ARRAY_SIZE(lp8720_matches); | |
865 | break; | |
866 | case LP8725: | |
867 | match = lp8725_matches; | |
868 | num_matches = ARRAY_SIZE(lp8725_matches); | |
869 | break; | |
870 | default: | |
871 | goto out; | |
872 | } | |
873 | ||
874 | count = of_regulator_match(dev, np, match, num_matches); | |
875 | if (count <= 0) | |
876 | goto out; | |
877 | ||
878 | for (i = 0; i < num_matches; i++) { | |
37a6f43d MK |
879 | pdata->regulator_data[i].id = |
880 | (enum lp872x_regulator_id)match[i].driver_data; | |
00fd6e61 | 881 | pdata->regulator_data[i].init_data = match[i].init_data; |
00fd6e61 KM |
882 | } |
883 | out: | |
884 | return pdata; | |
885 | } | |
886 | #else | |
887 | static struct lp872x_platform_data | |
888 | *lp872x_populate_pdata_from_dt(struct device *dev, enum lp872x_id which) | |
889 | { | |
890 | return NULL; | |
891 | } | |
892 | #endif | |
893 | ||
af8b5fc3 KM |
894 | static int lp872x_probe(struct i2c_client *cl, const struct i2c_device_id *id) |
895 | { | |
896 | struct lp872x *lp; | |
d9ffae15 | 897 | struct lp872x_platform_data *pdata; |
8538c407 | 898 | int ret; |
af8b5fc3 KM |
899 | const int lp872x_num_regulators[] = { |
900 | [LP8720] = LP8720_NUM_REGULATORS, | |
901 | [LP8725] = LP8725_NUM_REGULATORS, | |
902 | }; | |
903 | ||
804486b1 | 904 | if (cl->dev.of_node) { |
d9ffae15 | 905 | pdata = lp872x_populate_pdata_from_dt(&cl->dev, |
00fd6e61 | 906 | (enum lp872x_id)id->driver_data); |
804486b1 MK |
907 | if (IS_ERR(pdata)) |
908 | return PTR_ERR(pdata); | |
909 | } else { | |
d9ffae15 | 910 | pdata = dev_get_platdata(&cl->dev); |
804486b1 | 911 | } |
00fd6e61 | 912 | |
af8b5fc3 KM |
913 | lp = devm_kzalloc(&cl->dev, sizeof(struct lp872x), GFP_KERNEL); |
914 | if (!lp) | |
8538c407 | 915 | return -ENOMEM; |
af8b5fc3 | 916 | |
8538c407 | 917 | lp->num_regulators = lp872x_num_regulators[id->driver_data]; |
af8b5fc3 KM |
918 | |
919 | lp->regmap = devm_regmap_init_i2c(cl, &lp872x_regmap_config); | |
920 | if (IS_ERR(lp->regmap)) { | |
921 | ret = PTR_ERR(lp->regmap); | |
922 | dev_err(&cl->dev, "regmap init i2c err: %d\n", ret); | |
8538c407 | 923 | return ret; |
af8b5fc3 KM |
924 | } |
925 | ||
926 | lp->dev = &cl->dev; | |
d9ffae15 | 927 | lp->pdata = pdata; |
af8b5fc3 | 928 | lp->chipid = id->driver_data; |
af8b5fc3 KM |
929 | i2c_set_clientdata(cl, lp); |
930 | ||
7e6213f4 PK |
931 | ret = lp872x_hw_enable(lp); |
932 | if (ret) | |
933 | return ret; | |
934 | ||
af8b5fc3 KM |
935 | ret = lp872x_config(lp); |
936 | if (ret) | |
8538c407 | 937 | return ret; |
af8b5fc3 KM |
938 | |
939 | return lp872x_regulator_register(lp); | |
af8b5fc3 KM |
940 | } |
941 | ||
00fd6e61 KM |
942 | static const struct of_device_id lp872x_dt_ids[] = { |
943 | { .compatible = "ti,lp8720", }, | |
944 | { .compatible = "ti,lp8725", }, | |
945 | { } | |
946 | }; | |
947 | MODULE_DEVICE_TABLE(of, lp872x_dt_ids); | |
948 | ||
af8b5fc3 KM |
949 | static const struct i2c_device_id lp872x_ids[] = { |
950 | {"lp8720", LP8720}, | |
951 | {"lp8725", LP8725}, | |
952 | { } | |
953 | }; | |
954 | MODULE_DEVICE_TABLE(i2c, lp872x_ids); | |
955 | ||
956 | static struct i2c_driver lp872x_driver = { | |
957 | .driver = { | |
958 | .name = "lp872x", | |
00fd6e61 | 959 | .of_match_table = of_match_ptr(lp872x_dt_ids), |
af8b5fc3 KM |
960 | }, |
961 | .probe = lp872x_probe, | |
af8b5fc3 KM |
962 | .id_table = lp872x_ids, |
963 | }; | |
964 | ||
965 | module_i2c_driver(lp872x_driver); | |
966 | ||
967 | MODULE_DESCRIPTION("TI/National Semiconductor LP872x PMU Regulator Driver"); | |
968 | MODULE_AUTHOR("Milo Kim"); | |
969 | MODULE_LICENSE("GPL"); |