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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
af8b5fc3 KM |
2 | /* |
3 | * Copyright 2012 Texas Instruments | |
4 | * | |
5 | * Author: Milo(Woogyom) Kim <milo.kim@ti.com> | |
af8b5fc3 KM |
6 | */ |
7 | ||
8 | #include <linux/module.h> | |
9 | #include <linux/slab.h> | |
10 | #include <linux/i2c.h> | |
11 | #include <linux/regmap.h> | |
12 | #include <linux/err.h> | |
13 | #include <linux/gpio.h> | |
7e6213f4 | 14 | #include <linux/delay.h> |
af8b5fc3 KM |
15 | #include <linux/regulator/lp872x.h> |
16 | #include <linux/regulator/driver.h> | |
17 | #include <linux/platform_device.h> | |
00fd6e61 KM |
18 | #include <linux/of.h> |
19 | #include <linux/of_gpio.h> | |
20 | #include <linux/regulator/of_regulator.h> | |
af8b5fc3 KM |
21 | |
22 | /* Registers : LP8720/8725 shared */ | |
23 | #define LP872X_GENERAL_CFG 0x00 | |
24 | #define LP872X_LDO1_VOUT 0x01 | |
25 | #define LP872X_LDO2_VOUT 0x02 | |
26 | #define LP872X_LDO3_VOUT 0x03 | |
27 | #define LP872X_LDO4_VOUT 0x04 | |
28 | #define LP872X_LDO5_VOUT 0x05 | |
29 | ||
30 | /* Registers : LP8720 */ | |
31 | #define LP8720_BUCK_VOUT1 0x06 | |
32 | #define LP8720_BUCK_VOUT2 0x07 | |
33 | #define LP8720_ENABLE 0x08 | |
34 | ||
35 | /* Registers : LP8725 */ | |
36 | #define LP8725_LILO1_VOUT 0x06 | |
37 | #define LP8725_LILO2_VOUT 0x07 | |
38 | #define LP8725_BUCK1_VOUT1 0x08 | |
39 | #define LP8725_BUCK1_VOUT2 0x09 | |
40 | #define LP8725_BUCK2_VOUT1 0x0A | |
41 | #define LP8725_BUCK2_VOUT2 0x0B | |
42 | #define LP8725_BUCK_CTRL 0x0C | |
43 | #define LP8725_LDO_CTRL 0x0D | |
44 | ||
45 | /* Mask/shift : LP8720/LP8725 shared */ | |
46 | #define LP872X_VOUT_M 0x1F | |
47 | #define LP872X_START_DELAY_M 0xE0 | |
48 | #define LP872X_START_DELAY_S 5 | |
49 | #define LP872X_EN_LDO1_M BIT(0) | |
50 | #define LP872X_EN_LDO2_M BIT(1) | |
51 | #define LP872X_EN_LDO3_M BIT(2) | |
52 | #define LP872X_EN_LDO4_M BIT(3) | |
53 | #define LP872X_EN_LDO5_M BIT(4) | |
54 | ||
55 | /* Mask/shift : LP8720 */ | |
56 | #define LP8720_TIMESTEP_S 0 /* Addr 00h */ | |
57 | #define LP8720_TIMESTEP_M BIT(0) | |
58 | #define LP8720_EXT_DVS_M BIT(2) | |
59 | #define LP8720_BUCK_FPWM_S 5 /* Addr 07h */ | |
60 | #define LP8720_BUCK_FPWM_M BIT(5) | |
61 | #define LP8720_EN_BUCK_M BIT(5) /* Addr 08h */ | |
62 | #define LP8720_DVS_SEL_M BIT(7) | |
63 | ||
64 | /* Mask/shift : LP8725 */ | |
65 | #define LP8725_TIMESTEP_M 0xC0 /* Addr 00h */ | |
66 | #define LP8725_TIMESTEP_S 6 | |
67 | #define LP8725_BUCK1_EN_M BIT(0) | |
68 | #define LP8725_DVS1_M BIT(2) | |
69 | #define LP8725_DVS2_M BIT(3) | |
70 | #define LP8725_BUCK2_EN_M BIT(4) | |
71 | #define LP8725_BUCK_CL_M 0xC0 /* Addr 09h, 0Bh */ | |
72 | #define LP8725_BUCK_CL_S 6 | |
73 | #define LP8725_BUCK1_FPWM_S 1 /* Addr 0Ch */ | |
74 | #define LP8725_BUCK1_FPWM_M BIT(1) | |
75 | #define LP8725_BUCK2_FPWM_S 5 | |
76 | #define LP8725_BUCK2_FPWM_M BIT(5) | |
77 | #define LP8725_EN_LILO1_M BIT(5) /* Addr 0Dh */ | |
78 | #define LP8725_EN_LILO2_M BIT(6) | |
79 | ||
80 | /* PWM mode */ | |
81 | #define LP872X_FORCE_PWM 1 | |
82 | #define LP872X_AUTO_PWM 0 | |
83 | ||
84 | #define LP8720_NUM_REGULATORS 6 | |
85 | #define LP8725_NUM_REGULATORS 9 | |
86 | #define EXTERN_DVS_USED 0 | |
87 | #define MAX_DELAY 6 | |
88 | ||
b158fba6 KM |
89 | /* Default DVS Mode */ |
90 | #define LP8720_DEFAULT_DVS 0 | |
91 | #define LP8725_DEFAULT_DVS BIT(2) | |
92 | ||
af8b5fc3 KM |
93 | /* dump registers in regmap-debugfs */ |
94 | #define MAX_REGISTERS 0x0F | |
95 | ||
96 | enum lp872x_id { | |
97 | LP8720, | |
98 | LP8725, | |
99 | }; | |
100 | ||
101 | struct lp872x { | |
102 | struct regmap *regmap; | |
103 | struct device *dev; | |
104 | enum lp872x_id chipid; | |
105 | struct lp872x_platform_data *pdata; | |
af8b5fc3 KM |
106 | int num_regulators; |
107 | enum lp872x_dvs_state dvs_pin; | |
af8b5fc3 KM |
108 | }; |
109 | ||
110 | /* LP8720/LP8725 shared voltage table for LDOs */ | |
111 | static const unsigned int lp872x_ldo_vtbl[] = { | |
112 | 1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000, | |
113 | 1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 2000000, | |
114 | 2100000, 2200000, 2300000, 2400000, 2500000, 2600000, 2650000, 2700000, | |
115 | 2750000, 2800000, 2850000, 2900000, 2950000, 3000000, 3100000, 3300000, | |
116 | }; | |
117 | ||
118 | /* LP8720 LDO4 voltage table */ | |
119 | static const unsigned int lp8720_ldo4_vtbl[] = { | |
120 | 800000, 850000, 900000, 1000000, 1100000, 1200000, 1250000, 1300000, | |
121 | 1350000, 1400000, 1450000, 1500000, 1550000, 1600000, 1650000, 1700000, | |
122 | 1750000, 1800000, 1850000, 1900000, 2000000, 2100000, 2200000, 2300000, | |
123 | 2400000, 2500000, 2600000, 2650000, 2700000, 2750000, 2800000, 2850000, | |
124 | }; | |
125 | ||
126 | /* LP8725 LILO(Low Input Low Output) voltage table */ | |
127 | static const unsigned int lp8725_lilo_vtbl[] = { | |
128 | 800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000, | |
129 | 1200000, 1250000, 1300000, 1350000, 1400000, 1500000, 1600000, 1700000, | |
130 | 1800000, 1900000, 2000000, 2100000, 2200000, 2300000, 2400000, 2500000, | |
131 | 2600000, 2700000, 2800000, 2850000, 2900000, 3000000, 3100000, 3300000, | |
132 | }; | |
133 | ||
134 | /* LP8720 BUCK voltage table */ | |
135 | #define EXT_R 0 /* external resistor divider */ | |
136 | static const unsigned int lp8720_buck_vtbl[] = { | |
137 | EXT_R, 800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, | |
138 | 1150000, 1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, | |
139 | 1550000, 1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, | |
140 | 1950000, 2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, | |
141 | }; | |
142 | ||
143 | /* LP8725 BUCK voltage table */ | |
144 | static const unsigned int lp8725_buck_vtbl[] = { | |
145 | 800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000, | |
146 | 1200000, 1250000, 1300000, 1350000, 1400000, 1500000, 1600000, 1700000, | |
147 | 1750000, 1800000, 1850000, 1900000, 2000000, 2100000, 2200000, 2300000, | |
148 | 2400000, 2500000, 2600000, 2700000, 2800000, 2850000, 2900000, 3000000, | |
149 | }; | |
150 | ||
151 | /* LP8725 BUCK current limit */ | |
152 | static const unsigned int lp8725_buck_uA[] = { | |
153 | 460000, 780000, 1050000, 1370000, | |
154 | }; | |
155 | ||
156 | static int lp872x_read_byte(struct lp872x *lp, u8 addr, u8 *data) | |
157 | { | |
158 | int ret; | |
159 | unsigned int val; | |
160 | ||
161 | ret = regmap_read(lp->regmap, addr, &val); | |
162 | if (ret < 0) { | |
163 | dev_err(lp->dev, "failed to read 0x%.2x\n", addr); | |
164 | return ret; | |
165 | } | |
166 | ||
167 | *data = (u8)val; | |
168 | return 0; | |
169 | } | |
170 | ||
171 | static inline int lp872x_write_byte(struct lp872x *lp, u8 addr, u8 data) | |
172 | { | |
173 | return regmap_write(lp->regmap, addr, data); | |
174 | } | |
175 | ||
176 | static inline int lp872x_update_bits(struct lp872x *lp, u8 addr, | |
177 | unsigned int mask, u8 data) | |
178 | { | |
179 | return regmap_update_bits(lp->regmap, addr, mask, data); | |
180 | } | |
181 | ||
af8b5fc3 KM |
182 | static int lp872x_get_timestep_usec(struct lp872x *lp) |
183 | { | |
184 | enum lp872x_id chip = lp->chipid; | |
185 | u8 val, mask, shift; | |
186 | int *time_usec, size, ret; | |
187 | int lp8720_time_usec[] = { 25, 50 }; | |
188 | int lp8725_time_usec[] = { 32, 64, 128, 256 }; | |
189 | ||
190 | switch (chip) { | |
191 | case LP8720: | |
192 | mask = LP8720_TIMESTEP_M; | |
193 | shift = LP8720_TIMESTEP_S; | |
194 | time_usec = &lp8720_time_usec[0]; | |
195 | size = ARRAY_SIZE(lp8720_time_usec); | |
196 | break; | |
197 | case LP8725: | |
198 | mask = LP8725_TIMESTEP_M; | |
199 | shift = LP8725_TIMESTEP_S; | |
200 | time_usec = &lp8725_time_usec[0]; | |
201 | size = ARRAY_SIZE(lp8725_time_usec); | |
202 | break; | |
203 | default: | |
204 | return -EINVAL; | |
205 | } | |
206 | ||
207 | ret = lp872x_read_byte(lp, LP872X_GENERAL_CFG, &val); | |
208 | if (ret) | |
ad5ec6cd | 209 | return ret; |
af8b5fc3 KM |
210 | |
211 | val = (val & mask) >> shift; | |
212 | if (val >= size) | |
213 | return -EINVAL; | |
214 | ||
215 | return *(time_usec + val); | |
216 | } | |
217 | ||
218 | static int lp872x_regulator_enable_time(struct regulator_dev *rdev) | |
219 | { | |
220 | struct lp872x *lp = rdev_get_drvdata(rdev); | |
2c129927 | 221 | enum lp872x_regulator_id rid = rdev_get_id(rdev); |
af8b5fc3 | 222 | int time_step_us = lp872x_get_timestep_usec(lp); |
2c129927 | 223 | int ret; |
af8b5fc3 KM |
224 | u8 addr, val; |
225 | ||
226 | if (time_step_us < 0) | |
ad5ec6cd | 227 | return time_step_us; |
af8b5fc3 | 228 | |
2c129927 AL |
229 | switch (rid) { |
230 | case LP8720_ID_LDO1 ... LP8720_ID_BUCK: | |
231 | addr = LP872X_LDO1_VOUT + rid; | |
af8b5fc3 | 232 | break; |
2c129927 AL |
233 | case LP8725_ID_LDO1 ... LP8725_ID_BUCK1: |
234 | addr = LP872X_LDO1_VOUT + rid - LP8725_ID_BASE; | |
af8b5fc3 KM |
235 | break; |
236 | case LP8725_ID_BUCK2: | |
237 | addr = LP8725_BUCK2_VOUT1; | |
238 | break; | |
239 | default: | |
240 | return -EINVAL; | |
241 | } | |
242 | ||
243 | ret = lp872x_read_byte(lp, addr, &val); | |
244 | if (ret) | |
245 | return ret; | |
246 | ||
247 | val = (val & LP872X_START_DELAY_M) >> LP872X_START_DELAY_S; | |
248 | ||
249 | return val > MAX_DELAY ? 0 : val * time_step_us; | |
250 | } | |
251 | ||
9d6da6fc KM |
252 | static void lp872x_set_dvs(struct lp872x *lp, enum lp872x_dvs_sel dvs_sel, |
253 | int gpio) | |
af8b5fc3 | 254 | { |
af8b5fc3 KM |
255 | enum lp872x_dvs_state state; |
256 | ||
257 | state = dvs_sel == SEL_V1 ? DVS_HIGH : DVS_LOW; | |
258 | gpio_set_value(gpio, state); | |
259 | lp->dvs_pin = state; | |
260 | } | |
261 | ||
262 | static u8 lp872x_select_buck_vout_addr(struct lp872x *lp, | |
263 | enum lp872x_regulator_id buck) | |
264 | { | |
265 | u8 val, addr; | |
266 | ||
267 | if (lp872x_read_byte(lp, LP872X_GENERAL_CFG, &val)) | |
268 | return 0; | |
269 | ||
270 | switch (buck) { | |
271 | case LP8720_ID_BUCK: | |
272 | if (val & LP8720_EXT_DVS_M) { | |
273 | addr = (lp->dvs_pin == DVS_HIGH) ? | |
274 | LP8720_BUCK_VOUT1 : LP8720_BUCK_VOUT2; | |
275 | } else { | |
276 | if (lp872x_read_byte(lp, LP8720_ENABLE, &val)) | |
277 | return 0; | |
278 | ||
279 | addr = val & LP8720_DVS_SEL_M ? | |
280 | LP8720_BUCK_VOUT1 : LP8720_BUCK_VOUT2; | |
281 | } | |
282 | break; | |
283 | case LP8725_ID_BUCK1: | |
284 | if (val & LP8725_DVS1_M) | |
285 | addr = LP8725_BUCK1_VOUT1; | |
286 | else | |
287 | addr = (lp->dvs_pin == DVS_HIGH) ? | |
288 | LP8725_BUCK1_VOUT1 : LP8725_BUCK1_VOUT2; | |
289 | break; | |
290 | case LP8725_ID_BUCK2: | |
291 | addr = val & LP8725_DVS2_M ? | |
292 | LP8725_BUCK2_VOUT1 : LP8725_BUCK2_VOUT2; | |
293 | break; | |
294 | default: | |
295 | return 0; | |
296 | } | |
297 | ||
298 | return addr; | |
299 | } | |
300 | ||
301 | static bool lp872x_is_valid_buck_addr(u8 addr) | |
302 | { | |
303 | switch (addr) { | |
304 | case LP8720_BUCK_VOUT1: | |
305 | case LP8720_BUCK_VOUT2: | |
306 | case LP8725_BUCK1_VOUT1: | |
307 | case LP8725_BUCK1_VOUT2: | |
308 | case LP8725_BUCK2_VOUT1: | |
309 | case LP8725_BUCK2_VOUT2: | |
310 | return true; | |
311 | default: | |
312 | return false; | |
313 | } | |
314 | } | |
315 | ||
316 | static int lp872x_buck_set_voltage_sel(struct regulator_dev *rdev, | |
317 | unsigned selector) | |
318 | { | |
319 | struct lp872x *lp = rdev_get_drvdata(rdev); | |
320 | enum lp872x_regulator_id buck = rdev_get_id(rdev); | |
321 | u8 addr, mask = LP872X_VOUT_M; | |
9d6da6fc | 322 | struct lp872x_dvs *dvs = lp->pdata ? lp->pdata->dvs : NULL; |
af8b5fc3 KM |
323 | |
324 | if (dvs && gpio_is_valid(dvs->gpio)) | |
9d6da6fc | 325 | lp872x_set_dvs(lp, dvs->vsel, dvs->gpio); |
af8b5fc3 KM |
326 | |
327 | addr = lp872x_select_buck_vout_addr(lp, buck); | |
328 | if (!lp872x_is_valid_buck_addr(addr)) | |
329 | return -EINVAL; | |
330 | ||
331 | return lp872x_update_bits(lp, addr, mask, selector); | |
332 | } | |
333 | ||
334 | static int lp872x_buck_get_voltage_sel(struct regulator_dev *rdev) | |
335 | { | |
336 | struct lp872x *lp = rdev_get_drvdata(rdev); | |
337 | enum lp872x_regulator_id buck = rdev_get_id(rdev); | |
338 | u8 addr, val; | |
339 | int ret; | |
340 | ||
341 | addr = lp872x_select_buck_vout_addr(lp, buck); | |
342 | if (!lp872x_is_valid_buck_addr(addr)) | |
343 | return -EINVAL; | |
344 | ||
345 | ret = lp872x_read_byte(lp, addr, &val); | |
346 | if (ret) | |
347 | return ret; | |
348 | ||
349 | return val & LP872X_VOUT_M; | |
350 | } | |
351 | ||
af8b5fc3 KM |
352 | static int lp872x_buck_set_mode(struct regulator_dev *rdev, unsigned int mode) |
353 | { | |
354 | struct lp872x *lp = rdev_get_drvdata(rdev); | |
355 | enum lp872x_regulator_id buck = rdev_get_id(rdev); | |
356 | u8 addr, mask, shift, val; | |
357 | ||
358 | switch (buck) { | |
359 | case LP8720_ID_BUCK: | |
360 | addr = LP8720_BUCK_VOUT2; | |
361 | mask = LP8720_BUCK_FPWM_M; | |
362 | shift = LP8720_BUCK_FPWM_S; | |
363 | break; | |
364 | case LP8725_ID_BUCK1: | |
365 | addr = LP8725_BUCK_CTRL; | |
366 | mask = LP8725_BUCK1_FPWM_M; | |
367 | shift = LP8725_BUCK1_FPWM_S; | |
368 | break; | |
369 | case LP8725_ID_BUCK2: | |
370 | addr = LP8725_BUCK_CTRL; | |
371 | mask = LP8725_BUCK2_FPWM_M; | |
372 | shift = LP8725_BUCK2_FPWM_S; | |
373 | break; | |
374 | default: | |
375 | return -EINVAL; | |
376 | } | |
377 | ||
378 | if (mode == REGULATOR_MODE_FAST) | |
379 | val = LP872X_FORCE_PWM << shift; | |
380 | else if (mode == REGULATOR_MODE_NORMAL) | |
381 | val = LP872X_AUTO_PWM << shift; | |
382 | else | |
383 | return -EINVAL; | |
384 | ||
385 | return lp872x_update_bits(lp, addr, mask, val); | |
386 | } | |
387 | ||
388 | static unsigned int lp872x_buck_get_mode(struct regulator_dev *rdev) | |
389 | { | |
390 | struct lp872x *lp = rdev_get_drvdata(rdev); | |
391 | enum lp872x_regulator_id buck = rdev_get_id(rdev); | |
392 | u8 addr, mask, val; | |
393 | int ret; | |
394 | ||
395 | switch (buck) { | |
396 | case LP8720_ID_BUCK: | |
397 | addr = LP8720_BUCK_VOUT2; | |
398 | mask = LP8720_BUCK_FPWM_M; | |
399 | break; | |
400 | case LP8725_ID_BUCK1: | |
401 | addr = LP8725_BUCK_CTRL; | |
402 | mask = LP8725_BUCK1_FPWM_M; | |
403 | break; | |
404 | case LP8725_ID_BUCK2: | |
405 | addr = LP8725_BUCK_CTRL; | |
406 | mask = LP8725_BUCK2_FPWM_M; | |
407 | break; | |
408 | default: | |
409 | return -EINVAL; | |
410 | } | |
411 | ||
412 | ret = lp872x_read_byte(lp, addr, &val); | |
413 | if (ret) | |
414 | return ret; | |
415 | ||
416 | return val & mask ? REGULATOR_MODE_FAST : REGULATOR_MODE_NORMAL; | |
417 | } | |
418 | ||
f966404f | 419 | static const struct regulator_ops lp872x_ldo_ops = { |
af8b5fc3 | 420 | .list_voltage = regulator_list_voltage_table, |
a32f9e02 | 421 | .map_voltage = regulator_map_voltage_ascend, |
af8b5fc3 KM |
422 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
423 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
424 | .enable = regulator_enable_regmap, | |
425 | .disable = regulator_disable_regmap, | |
426 | .is_enabled = regulator_is_enabled_regmap, | |
427 | .enable_time = lp872x_regulator_enable_time, | |
428 | }; | |
429 | ||
f966404f | 430 | static const struct regulator_ops lp8720_buck_ops = { |
af8b5fc3 | 431 | .list_voltage = regulator_list_voltage_table, |
a32f9e02 | 432 | .map_voltage = regulator_map_voltage_ascend, |
af8b5fc3 KM |
433 | .set_voltage_sel = lp872x_buck_set_voltage_sel, |
434 | .get_voltage_sel = lp872x_buck_get_voltage_sel, | |
435 | .enable = regulator_enable_regmap, | |
436 | .disable = regulator_disable_regmap, | |
437 | .is_enabled = regulator_is_enabled_regmap, | |
438 | .enable_time = lp872x_regulator_enable_time, | |
439 | .set_mode = lp872x_buck_set_mode, | |
440 | .get_mode = lp872x_buck_get_mode, | |
441 | }; | |
442 | ||
f966404f | 443 | static const struct regulator_ops lp8725_buck_ops = { |
af8b5fc3 | 444 | .list_voltage = regulator_list_voltage_table, |
a32f9e02 | 445 | .map_voltage = regulator_map_voltage_ascend, |
af8b5fc3 KM |
446 | .set_voltage_sel = lp872x_buck_set_voltage_sel, |
447 | .get_voltage_sel = lp872x_buck_get_voltage_sel, | |
448 | .enable = regulator_enable_regmap, | |
449 | .disable = regulator_disable_regmap, | |
450 | .is_enabled = regulator_is_enabled_regmap, | |
451 | .enable_time = lp872x_regulator_enable_time, | |
452 | .set_mode = lp872x_buck_set_mode, | |
453 | .get_mode = lp872x_buck_get_mode, | |
8918f068 AL |
454 | .set_current_limit = regulator_set_current_limit_regmap, |
455 | .get_current_limit = regulator_get_current_limit_regmap, | |
af8b5fc3 KM |
456 | }; |
457 | ||
f966404f | 458 | static const struct regulator_desc lp8720_regulator_desc[] = { |
af8b5fc3 KM |
459 | { |
460 | .name = "ldo1", | |
1f97fe47 | 461 | .of_match = of_match_ptr("ldo1"), |
af8b5fc3 KM |
462 | .id = LP8720_ID_LDO1, |
463 | .ops = &lp872x_ldo_ops, | |
464 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
465 | .volt_table = lp872x_ldo_vtbl, | |
466 | .type = REGULATOR_VOLTAGE, | |
467 | .owner = THIS_MODULE, | |
468 | .vsel_reg = LP872X_LDO1_VOUT, | |
469 | .vsel_mask = LP872X_VOUT_M, | |
470 | .enable_reg = LP8720_ENABLE, | |
471 | .enable_mask = LP872X_EN_LDO1_M, | |
472 | }, | |
473 | { | |
474 | .name = "ldo2", | |
1f97fe47 | 475 | .of_match = of_match_ptr("ldo2"), |
af8b5fc3 KM |
476 | .id = LP8720_ID_LDO2, |
477 | .ops = &lp872x_ldo_ops, | |
478 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
479 | .volt_table = lp872x_ldo_vtbl, | |
480 | .type = REGULATOR_VOLTAGE, | |
481 | .owner = THIS_MODULE, | |
482 | .vsel_reg = LP872X_LDO2_VOUT, | |
483 | .vsel_mask = LP872X_VOUT_M, | |
484 | .enable_reg = LP8720_ENABLE, | |
485 | .enable_mask = LP872X_EN_LDO2_M, | |
486 | }, | |
487 | { | |
488 | .name = "ldo3", | |
1f97fe47 | 489 | .of_match = of_match_ptr("ldo3"), |
af8b5fc3 KM |
490 | .id = LP8720_ID_LDO3, |
491 | .ops = &lp872x_ldo_ops, | |
492 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
493 | .volt_table = lp872x_ldo_vtbl, | |
494 | .type = REGULATOR_VOLTAGE, | |
495 | .owner = THIS_MODULE, | |
496 | .vsel_reg = LP872X_LDO3_VOUT, | |
497 | .vsel_mask = LP872X_VOUT_M, | |
498 | .enable_reg = LP8720_ENABLE, | |
499 | .enable_mask = LP872X_EN_LDO3_M, | |
500 | }, | |
501 | { | |
502 | .name = "ldo4", | |
1f97fe47 | 503 | .of_match = of_match_ptr("ldo4"), |
af8b5fc3 KM |
504 | .id = LP8720_ID_LDO4, |
505 | .ops = &lp872x_ldo_ops, | |
506 | .n_voltages = ARRAY_SIZE(lp8720_ldo4_vtbl), | |
507 | .volt_table = lp8720_ldo4_vtbl, | |
508 | .type = REGULATOR_VOLTAGE, | |
509 | .owner = THIS_MODULE, | |
510 | .vsel_reg = LP872X_LDO4_VOUT, | |
511 | .vsel_mask = LP872X_VOUT_M, | |
512 | .enable_reg = LP8720_ENABLE, | |
513 | .enable_mask = LP872X_EN_LDO4_M, | |
514 | }, | |
515 | { | |
516 | .name = "ldo5", | |
1f97fe47 | 517 | .of_match = of_match_ptr("ldo5"), |
af8b5fc3 KM |
518 | .id = LP8720_ID_LDO5, |
519 | .ops = &lp872x_ldo_ops, | |
520 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
521 | .volt_table = lp872x_ldo_vtbl, | |
522 | .type = REGULATOR_VOLTAGE, | |
523 | .owner = THIS_MODULE, | |
524 | .vsel_reg = LP872X_LDO5_VOUT, | |
525 | .vsel_mask = LP872X_VOUT_M, | |
526 | .enable_reg = LP8720_ENABLE, | |
527 | .enable_mask = LP872X_EN_LDO5_M, | |
528 | }, | |
529 | { | |
530 | .name = "buck", | |
1f97fe47 | 531 | .of_match = of_match_ptr("buck"), |
af8b5fc3 KM |
532 | .id = LP8720_ID_BUCK, |
533 | .ops = &lp8720_buck_ops, | |
534 | .n_voltages = ARRAY_SIZE(lp8720_buck_vtbl), | |
535 | .volt_table = lp8720_buck_vtbl, | |
536 | .type = REGULATOR_VOLTAGE, | |
537 | .owner = THIS_MODULE, | |
538 | .enable_reg = LP8720_ENABLE, | |
539 | .enable_mask = LP8720_EN_BUCK_M, | |
540 | }, | |
541 | }; | |
542 | ||
f966404f | 543 | static const struct regulator_desc lp8725_regulator_desc[] = { |
af8b5fc3 KM |
544 | { |
545 | .name = "ldo1", | |
1f97fe47 | 546 | .of_match = of_match_ptr("ldo1"), |
af8b5fc3 KM |
547 | .id = LP8725_ID_LDO1, |
548 | .ops = &lp872x_ldo_ops, | |
549 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
550 | .volt_table = lp872x_ldo_vtbl, | |
551 | .type = REGULATOR_VOLTAGE, | |
552 | .owner = THIS_MODULE, | |
553 | .vsel_reg = LP872X_LDO1_VOUT, | |
554 | .vsel_mask = LP872X_VOUT_M, | |
555 | .enable_reg = LP8725_LDO_CTRL, | |
556 | .enable_mask = LP872X_EN_LDO1_M, | |
557 | }, | |
558 | { | |
559 | .name = "ldo2", | |
1f97fe47 | 560 | .of_match = of_match_ptr("ldo2"), |
af8b5fc3 KM |
561 | .id = LP8725_ID_LDO2, |
562 | .ops = &lp872x_ldo_ops, | |
563 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
564 | .volt_table = lp872x_ldo_vtbl, | |
565 | .type = REGULATOR_VOLTAGE, | |
566 | .owner = THIS_MODULE, | |
567 | .vsel_reg = LP872X_LDO2_VOUT, | |
568 | .vsel_mask = LP872X_VOUT_M, | |
569 | .enable_reg = LP8725_LDO_CTRL, | |
570 | .enable_mask = LP872X_EN_LDO2_M, | |
571 | }, | |
572 | { | |
573 | .name = "ldo3", | |
1f97fe47 | 574 | .of_match = of_match_ptr("ldo3"), |
af8b5fc3 KM |
575 | .id = LP8725_ID_LDO3, |
576 | .ops = &lp872x_ldo_ops, | |
577 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
578 | .volt_table = lp872x_ldo_vtbl, | |
579 | .type = REGULATOR_VOLTAGE, | |
580 | .owner = THIS_MODULE, | |
581 | .vsel_reg = LP872X_LDO3_VOUT, | |
582 | .vsel_mask = LP872X_VOUT_M, | |
583 | .enable_reg = LP8725_LDO_CTRL, | |
584 | .enable_mask = LP872X_EN_LDO3_M, | |
585 | }, | |
586 | { | |
587 | .name = "ldo4", | |
1f97fe47 | 588 | .of_match = of_match_ptr("ldo4"), |
af8b5fc3 KM |
589 | .id = LP8725_ID_LDO4, |
590 | .ops = &lp872x_ldo_ops, | |
591 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
592 | .volt_table = lp872x_ldo_vtbl, | |
593 | .type = REGULATOR_VOLTAGE, | |
594 | .owner = THIS_MODULE, | |
595 | .vsel_reg = LP872X_LDO4_VOUT, | |
596 | .vsel_mask = LP872X_VOUT_M, | |
597 | .enable_reg = LP8725_LDO_CTRL, | |
598 | .enable_mask = LP872X_EN_LDO4_M, | |
599 | }, | |
600 | { | |
601 | .name = "ldo5", | |
1f97fe47 | 602 | .of_match = of_match_ptr("ldo5"), |
af8b5fc3 KM |
603 | .id = LP8725_ID_LDO5, |
604 | .ops = &lp872x_ldo_ops, | |
605 | .n_voltages = ARRAY_SIZE(lp872x_ldo_vtbl), | |
606 | .volt_table = lp872x_ldo_vtbl, | |
607 | .type = REGULATOR_VOLTAGE, | |
608 | .owner = THIS_MODULE, | |
609 | .vsel_reg = LP872X_LDO5_VOUT, | |
610 | .vsel_mask = LP872X_VOUT_M, | |
611 | .enable_reg = LP8725_LDO_CTRL, | |
612 | .enable_mask = LP872X_EN_LDO5_M, | |
613 | }, | |
614 | { | |
615 | .name = "lilo1", | |
1f97fe47 | 616 | .of_match = of_match_ptr("lilo1"), |
af8b5fc3 KM |
617 | .id = LP8725_ID_LILO1, |
618 | .ops = &lp872x_ldo_ops, | |
619 | .n_voltages = ARRAY_SIZE(lp8725_lilo_vtbl), | |
620 | .volt_table = lp8725_lilo_vtbl, | |
621 | .type = REGULATOR_VOLTAGE, | |
622 | .owner = THIS_MODULE, | |
623 | .vsel_reg = LP8725_LILO1_VOUT, | |
624 | .vsel_mask = LP872X_VOUT_M, | |
625 | .enable_reg = LP8725_LDO_CTRL, | |
626 | .enable_mask = LP8725_EN_LILO1_M, | |
627 | }, | |
628 | { | |
629 | .name = "lilo2", | |
1f97fe47 | 630 | .of_match = of_match_ptr("lilo2"), |
af8b5fc3 KM |
631 | .id = LP8725_ID_LILO2, |
632 | .ops = &lp872x_ldo_ops, | |
633 | .n_voltages = ARRAY_SIZE(lp8725_lilo_vtbl), | |
634 | .volt_table = lp8725_lilo_vtbl, | |
635 | .type = REGULATOR_VOLTAGE, | |
636 | .owner = THIS_MODULE, | |
637 | .vsel_reg = LP8725_LILO2_VOUT, | |
638 | .vsel_mask = LP872X_VOUT_M, | |
639 | .enable_reg = LP8725_LDO_CTRL, | |
640 | .enable_mask = LP8725_EN_LILO2_M, | |
641 | }, | |
642 | { | |
643 | .name = "buck1", | |
1f97fe47 | 644 | .of_match = of_match_ptr("buck1"), |
af8b5fc3 KM |
645 | .id = LP8725_ID_BUCK1, |
646 | .ops = &lp8725_buck_ops, | |
647 | .n_voltages = ARRAY_SIZE(lp8725_buck_vtbl), | |
648 | .volt_table = lp8725_buck_vtbl, | |
649 | .type = REGULATOR_VOLTAGE, | |
650 | .owner = THIS_MODULE, | |
651 | .enable_reg = LP872X_GENERAL_CFG, | |
652 | .enable_mask = LP8725_BUCK1_EN_M, | |
8918f068 AL |
653 | .curr_table = lp8725_buck_uA, |
654 | .n_current_limits = ARRAY_SIZE(lp8725_buck_uA), | |
655 | .csel_reg = LP8725_BUCK1_VOUT2, | |
656 | .csel_mask = LP8725_BUCK_CL_M, | |
af8b5fc3 KM |
657 | }, |
658 | { | |
659 | .name = "buck2", | |
1f97fe47 | 660 | .of_match = of_match_ptr("buck2"), |
af8b5fc3 KM |
661 | .id = LP8725_ID_BUCK2, |
662 | .ops = &lp8725_buck_ops, | |
663 | .n_voltages = ARRAY_SIZE(lp8725_buck_vtbl), | |
664 | .volt_table = lp8725_buck_vtbl, | |
665 | .type = REGULATOR_VOLTAGE, | |
666 | .owner = THIS_MODULE, | |
667 | .enable_reg = LP872X_GENERAL_CFG, | |
668 | .enable_mask = LP8725_BUCK2_EN_M, | |
8918f068 AL |
669 | .curr_table = lp8725_buck_uA, |
670 | .n_current_limits = ARRAY_SIZE(lp8725_buck_uA), | |
671 | .csel_reg = LP8725_BUCK2_VOUT2, | |
672 | .csel_mask = LP8725_BUCK_CL_M, | |
af8b5fc3 KM |
673 | }, |
674 | }; | |
675 | ||
af8b5fc3 KM |
676 | static int lp872x_init_dvs(struct lp872x *lp) |
677 | { | |
678 | int ret, gpio; | |
b158fba6 | 679 | struct lp872x_dvs *dvs = lp->pdata ? lp->pdata->dvs : NULL; |
af8b5fc3 | 680 | enum lp872x_dvs_state pinstate; |
b158fba6 KM |
681 | u8 mask[] = { LP8720_EXT_DVS_M, LP8725_DVS1_M | LP8725_DVS2_M }; |
682 | u8 default_dvs_mode[] = { LP8720_DEFAULT_DVS, LP8725_DEFAULT_DVS }; | |
683 | ||
684 | if (!dvs) | |
685 | goto set_default_dvs_mode; | |
af8b5fc3 | 686 | |
af8b5fc3 | 687 | gpio = dvs->gpio; |
690f44ba | 688 | if (!gpio_is_valid(gpio)) |
00fd6e61 | 689 | goto set_default_dvs_mode; |
af8b5fc3 KM |
690 | |
691 | pinstate = dvs->init_state; | |
692 | ret = devm_gpio_request_one(lp->dev, gpio, pinstate, "LP872X DVS"); | |
693 | if (ret) { | |
694 | dev_err(lp->dev, "gpio request err: %d\n", ret); | |
695 | return ret; | |
696 | } | |
697 | ||
698 | lp->dvs_pin = pinstate; | |
af8b5fc3 KM |
699 | |
700 | return 0; | |
b158fba6 KM |
701 | |
702 | set_default_dvs_mode: | |
703 | return lp872x_update_bits(lp, LP872X_GENERAL_CFG, mask[lp->chipid], | |
704 | default_dvs_mode[lp->chipid]); | |
af8b5fc3 KM |
705 | } |
706 | ||
7e6213f4 PK |
707 | static int lp872x_hw_enable(struct lp872x *lp) |
708 | { | |
709 | int ret, gpio; | |
710 | ||
711 | if (!lp->pdata) | |
712 | return -EINVAL; | |
713 | ||
714 | gpio = lp->pdata->enable_gpio; | |
715 | if (!gpio_is_valid(gpio)) | |
716 | return 0; | |
717 | ||
718 | /* Always set enable GPIO high. */ | |
719 | ret = devm_gpio_request_one(lp->dev, gpio, GPIOF_OUT_INIT_HIGH, "LP872X EN"); | |
720 | if (ret) { | |
721 | dev_err(lp->dev, "gpio request err: %d\n", ret); | |
722 | return ret; | |
723 | } | |
724 | ||
725 | /* Each chip has a different enable delay. */ | |
726 | if (lp->chipid == LP8720) | |
727 | usleep_range(LP8720_ENABLE_DELAY, 1.5 * LP8720_ENABLE_DELAY); | |
728 | else | |
729 | usleep_range(LP8725_ENABLE_DELAY, 1.5 * LP8725_ENABLE_DELAY); | |
730 | ||
731 | return 0; | |
732 | } | |
733 | ||
af8b5fc3 KM |
734 | static int lp872x_config(struct lp872x *lp) |
735 | { | |
736 | struct lp872x_platform_data *pdata = lp->pdata; | |
737 | int ret; | |
738 | ||
86b3fef0 KM |
739 | if (!pdata || !pdata->update_config) |
740 | goto init_dvs; | |
af8b5fc3 KM |
741 | |
742 | ret = lp872x_write_byte(lp, LP872X_GENERAL_CFG, pdata->general_config); | |
743 | if (ret) | |
744 | return ret; | |
745 | ||
86b3fef0 | 746 | init_dvs: |
af8b5fc3 KM |
747 | return lp872x_init_dvs(lp); |
748 | } | |
749 | ||
750 | static struct regulator_init_data | |
5bae0628 | 751 | *lp872x_find_regulator_init_data(int id, struct lp872x *lp) |
af8b5fc3 | 752 | { |
9ffaa868 | 753 | struct lp872x_platform_data *pdata = lp->pdata; |
5bae0628 | 754 | int i; |
af8b5fc3 | 755 | |
9ffaa868 KM |
756 | if (!pdata) |
757 | return NULL; | |
758 | ||
5bae0628 | 759 | for (i = 0; i < lp->num_regulators; i++) { |
9ffaa868 KM |
760 | if (pdata->regulator_data[i].id == id) |
761 | return pdata->regulator_data[i].init_data; | |
5bae0628 | 762 | } |
af8b5fc3 | 763 | |
5bae0628 | 764 | return NULL; |
af8b5fc3 KM |
765 | } |
766 | ||
767 | static int lp872x_regulator_register(struct lp872x *lp) | |
768 | { | |
f966404f | 769 | const struct regulator_desc *desc; |
af8b5fc3 KM |
770 | struct regulator_config cfg = { }; |
771 | struct regulator_dev *rdev; | |
ed602534 | 772 | int i; |
af8b5fc3 | 773 | |
37a6f43d | 774 | for (i = 0; i < lp->num_regulators; i++) { |
af8b5fc3 KM |
775 | desc = (lp->chipid == LP8720) ? &lp8720_regulator_desc[i] : |
776 | &lp8725_regulator_desc[i]; | |
777 | ||
778 | cfg.dev = lp->dev; | |
5bae0628 | 779 | cfg.init_data = lp872x_find_regulator_init_data(desc->id, lp); |
af8b5fc3 KM |
780 | cfg.driver_data = lp; |
781 | cfg.regmap = lp->regmap; | |
782 | ||
ed602534 | 783 | rdev = devm_regulator_register(lp->dev, desc, &cfg); |
af8b5fc3 KM |
784 | if (IS_ERR(rdev)) { |
785 | dev_err(lp->dev, "regulator register err"); | |
ed602534 | 786 | return PTR_ERR(rdev); |
af8b5fc3 | 787 | } |
af8b5fc3 KM |
788 | } |
789 | ||
790 | return 0; | |
af8b5fc3 KM |
791 | } |
792 | ||
793 | static const struct regmap_config lp872x_regmap_config = { | |
794 | .reg_bits = 8, | |
795 | .val_bits = 8, | |
796 | .max_register = MAX_REGISTERS, | |
797 | }; | |
798 | ||
00fd6e61 KM |
799 | #ifdef CONFIG_OF |
800 | ||
801 | #define LP872X_VALID_OPMODE (REGULATOR_MODE_FAST | REGULATOR_MODE_NORMAL) | |
802 | ||
803 | static struct of_regulator_match lp8720_matches[] = { | |
804 | { .name = "ldo1", .driver_data = (void *)LP8720_ID_LDO1, }, | |
805 | { .name = "ldo2", .driver_data = (void *)LP8720_ID_LDO2, }, | |
806 | { .name = "ldo3", .driver_data = (void *)LP8720_ID_LDO3, }, | |
807 | { .name = "ldo4", .driver_data = (void *)LP8720_ID_LDO4, }, | |
808 | { .name = "ldo5", .driver_data = (void *)LP8720_ID_LDO5, }, | |
809 | { .name = "buck", .driver_data = (void *)LP8720_ID_BUCK, }, | |
810 | }; | |
811 | ||
812 | static struct of_regulator_match lp8725_matches[] = { | |
813 | { .name = "ldo1", .driver_data = (void *)LP8725_ID_LDO1, }, | |
814 | { .name = "ldo2", .driver_data = (void *)LP8725_ID_LDO2, }, | |
815 | { .name = "ldo3", .driver_data = (void *)LP8725_ID_LDO3, }, | |
816 | { .name = "ldo4", .driver_data = (void *)LP8725_ID_LDO4, }, | |
817 | { .name = "ldo5", .driver_data = (void *)LP8725_ID_LDO5, }, | |
818 | { .name = "lilo1", .driver_data = (void *)LP8725_ID_LILO1, }, | |
819 | { .name = "lilo2", .driver_data = (void *)LP8725_ID_LILO2, }, | |
820 | { .name = "buck1", .driver_data = (void *)LP8725_ID_BUCK1, }, | |
821 | { .name = "buck2", .driver_data = (void *)LP8725_ID_BUCK2, }, | |
822 | }; | |
823 | ||
824 | static struct lp872x_platform_data | |
825 | *lp872x_populate_pdata_from_dt(struct device *dev, enum lp872x_id which) | |
826 | { | |
827 | struct device_node *np = dev->of_node; | |
828 | struct lp872x_platform_data *pdata; | |
829 | struct of_regulator_match *match; | |
00fd6e61 KM |
830 | int num_matches; |
831 | int count; | |
832 | int i; | |
833 | u8 dvs_state; | |
834 | ||
835 | pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); | |
836 | if (!pdata) | |
804486b1 | 837 | return ERR_PTR(-ENOMEM); |
00fd6e61 KM |
838 | |
839 | of_property_read_u8(np, "ti,general-config", &pdata->general_config); | |
840 | if (of_find_property(np, "ti,update-config", NULL)) | |
841 | pdata->update_config = true; | |
842 | ||
843 | pdata->dvs = devm_kzalloc(dev, sizeof(struct lp872x_dvs), GFP_KERNEL); | |
844 | if (!pdata->dvs) | |
804486b1 | 845 | return ERR_PTR(-ENOMEM); |
00fd6e61 KM |
846 | |
847 | pdata->dvs->gpio = of_get_named_gpio(np, "ti,dvs-gpio", 0); | |
848 | of_property_read_u8(np, "ti,dvs-vsel", (u8 *)&pdata->dvs->vsel); | |
849 | of_property_read_u8(np, "ti,dvs-state", &dvs_state); | |
850 | pdata->dvs->init_state = dvs_state ? DVS_HIGH : DVS_LOW; | |
851 | ||
7e6213f4 PK |
852 | pdata->enable_gpio = of_get_named_gpio(np, "enable-gpios", 0); |
853 | ||
00fd6e61 KM |
854 | if (of_get_child_count(np) == 0) |
855 | goto out; | |
856 | ||
857 | switch (which) { | |
858 | case LP8720: | |
859 | match = lp8720_matches; | |
860 | num_matches = ARRAY_SIZE(lp8720_matches); | |
861 | break; | |
862 | case LP8725: | |
863 | match = lp8725_matches; | |
864 | num_matches = ARRAY_SIZE(lp8725_matches); | |
865 | break; | |
866 | default: | |
867 | goto out; | |
868 | } | |
869 | ||
870 | count = of_regulator_match(dev, np, match, num_matches); | |
871 | if (count <= 0) | |
872 | goto out; | |
873 | ||
874 | for (i = 0; i < num_matches; i++) { | |
37a6f43d MK |
875 | pdata->regulator_data[i].id = |
876 | (enum lp872x_regulator_id)match[i].driver_data; | |
00fd6e61 | 877 | pdata->regulator_data[i].init_data = match[i].init_data; |
00fd6e61 KM |
878 | } |
879 | out: | |
880 | return pdata; | |
881 | } | |
882 | #else | |
883 | static struct lp872x_platform_data | |
884 | *lp872x_populate_pdata_from_dt(struct device *dev, enum lp872x_id which) | |
885 | { | |
886 | return NULL; | |
887 | } | |
888 | #endif | |
889 | ||
af8b5fc3 KM |
890 | static int lp872x_probe(struct i2c_client *cl, const struct i2c_device_id *id) |
891 | { | |
892 | struct lp872x *lp; | |
d9ffae15 | 893 | struct lp872x_platform_data *pdata; |
8538c407 | 894 | int ret; |
390d828f | 895 | static const int lp872x_num_regulators[] = { |
af8b5fc3 KM |
896 | [LP8720] = LP8720_NUM_REGULATORS, |
897 | [LP8725] = LP8725_NUM_REGULATORS, | |
898 | }; | |
899 | ||
804486b1 | 900 | if (cl->dev.of_node) { |
d9ffae15 | 901 | pdata = lp872x_populate_pdata_from_dt(&cl->dev, |
00fd6e61 | 902 | (enum lp872x_id)id->driver_data); |
804486b1 MK |
903 | if (IS_ERR(pdata)) |
904 | return PTR_ERR(pdata); | |
905 | } else { | |
d9ffae15 | 906 | pdata = dev_get_platdata(&cl->dev); |
804486b1 | 907 | } |
00fd6e61 | 908 | |
af8b5fc3 KM |
909 | lp = devm_kzalloc(&cl->dev, sizeof(struct lp872x), GFP_KERNEL); |
910 | if (!lp) | |
8538c407 | 911 | return -ENOMEM; |
af8b5fc3 | 912 | |
8538c407 | 913 | lp->num_regulators = lp872x_num_regulators[id->driver_data]; |
af8b5fc3 KM |
914 | |
915 | lp->regmap = devm_regmap_init_i2c(cl, &lp872x_regmap_config); | |
916 | if (IS_ERR(lp->regmap)) { | |
917 | ret = PTR_ERR(lp->regmap); | |
918 | dev_err(&cl->dev, "regmap init i2c err: %d\n", ret); | |
8538c407 | 919 | return ret; |
af8b5fc3 KM |
920 | } |
921 | ||
922 | lp->dev = &cl->dev; | |
d9ffae15 | 923 | lp->pdata = pdata; |
af8b5fc3 | 924 | lp->chipid = id->driver_data; |
af8b5fc3 KM |
925 | i2c_set_clientdata(cl, lp); |
926 | ||
7e6213f4 PK |
927 | ret = lp872x_hw_enable(lp); |
928 | if (ret) | |
929 | return ret; | |
930 | ||
af8b5fc3 KM |
931 | ret = lp872x_config(lp); |
932 | if (ret) | |
8538c407 | 933 | return ret; |
af8b5fc3 KM |
934 | |
935 | return lp872x_regulator_register(lp); | |
af8b5fc3 KM |
936 | } |
937 | ||
00fd6e61 KM |
938 | static const struct of_device_id lp872x_dt_ids[] = { |
939 | { .compatible = "ti,lp8720", }, | |
940 | { .compatible = "ti,lp8725", }, | |
941 | { } | |
942 | }; | |
943 | MODULE_DEVICE_TABLE(of, lp872x_dt_ids); | |
944 | ||
af8b5fc3 KM |
945 | static const struct i2c_device_id lp872x_ids[] = { |
946 | {"lp8720", LP8720}, | |
947 | {"lp8725", LP8725}, | |
948 | { } | |
949 | }; | |
950 | MODULE_DEVICE_TABLE(i2c, lp872x_ids); | |
951 | ||
952 | static struct i2c_driver lp872x_driver = { | |
953 | .driver = { | |
954 | .name = "lp872x", | |
00fd6e61 | 955 | .of_match_table = of_match_ptr(lp872x_dt_ids), |
af8b5fc3 KM |
956 | }, |
957 | .probe = lp872x_probe, | |
af8b5fc3 KM |
958 | .id_table = lp872x_ids, |
959 | }; | |
960 | ||
961 | module_i2c_driver(lp872x_driver); | |
962 | ||
963 | MODULE_DESCRIPTION("TI/National Semiconductor LP872x PMU Regulator Driver"); | |
964 | MODULE_AUTHOR("Milo Kim"); | |
965 | MODULE_LICENSE("GPL"); |