Version:  2.0.40 2.2.26 2.4.37 2.6.39 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15

Linux/drivers/regulator/lp8788-ldo.c

  1 /*
  2  * TI LP8788 MFD - ldo regulator driver
  3  *
  4  * Copyright 2012 Texas Instruments
  5  *
  6  * Author: Milo(Woogyom) Kim <milo.kim@ti.com>
  7  *
  8  * This program is free software; you can redistribute it and/or modify
  9  * it under the terms of the GNU General Public License version 2 as
 10  * published by the Free Software Foundation.
 11  *
 12  */
 13 
 14 #include <linux/module.h>
 15 #include <linux/slab.h>
 16 #include <linux/err.h>
 17 #include <linux/platform_device.h>
 18 #include <linux/regulator/driver.h>
 19 #include <linux/gpio.h>
 20 #include <linux/mfd/lp8788.h>
 21 
 22 /* register address */
 23 #define LP8788_EN_LDO_A                 0x0D    /* DLDO 1 ~ 8 */
 24 #define LP8788_EN_LDO_B                 0x0E    /* DLDO 9 ~ 12, ALDO 1 ~ 4 */
 25 #define LP8788_EN_LDO_C                 0x0F    /* ALDO 5 ~ 10 */
 26 #define LP8788_EN_SEL                   0x10
 27 #define LP8788_DLDO1_VOUT               0x2E
 28 #define LP8788_DLDO2_VOUT               0x2F
 29 #define LP8788_DLDO3_VOUT               0x30
 30 #define LP8788_DLDO4_VOUT               0x31
 31 #define LP8788_DLDO5_VOUT               0x32
 32 #define LP8788_DLDO6_VOUT               0x33
 33 #define LP8788_DLDO7_VOUT               0x34
 34 #define LP8788_DLDO8_VOUT               0x35
 35 #define LP8788_DLDO9_VOUT               0x36
 36 #define LP8788_DLDO10_VOUT              0x37
 37 #define LP8788_DLDO11_VOUT              0x38
 38 #define LP8788_DLDO12_VOUT              0x39
 39 #define LP8788_ALDO1_VOUT               0x3A
 40 #define LP8788_ALDO2_VOUT               0x3B
 41 #define LP8788_ALDO3_VOUT               0x3C
 42 #define LP8788_ALDO4_VOUT               0x3D
 43 #define LP8788_ALDO5_VOUT               0x3E
 44 #define LP8788_ALDO6_VOUT               0x3F
 45 #define LP8788_ALDO7_VOUT               0x40
 46 #define LP8788_ALDO8_VOUT               0x41
 47 #define LP8788_ALDO9_VOUT               0x42
 48 #define LP8788_ALDO10_VOUT              0x43
 49 #define LP8788_DLDO1_TIMESTEP           0x44
 50 
 51 /* mask/shift bits */
 52 #define LP8788_EN_DLDO1_M               BIT(0)  /* Addr 0Dh ~ 0Fh */
 53 #define LP8788_EN_DLDO2_M               BIT(1)
 54 #define LP8788_EN_DLDO3_M               BIT(2)
 55 #define LP8788_EN_DLDO4_M               BIT(3)
 56 #define LP8788_EN_DLDO5_M               BIT(4)
 57 #define LP8788_EN_DLDO6_M               BIT(5)
 58 #define LP8788_EN_DLDO7_M               BIT(6)
 59 #define LP8788_EN_DLDO8_M               BIT(7)
 60 #define LP8788_EN_DLDO9_M               BIT(0)
 61 #define LP8788_EN_DLDO10_M              BIT(1)
 62 #define LP8788_EN_DLDO11_M              BIT(2)
 63 #define LP8788_EN_DLDO12_M              BIT(3)
 64 #define LP8788_EN_ALDO1_M               BIT(4)
 65 #define LP8788_EN_ALDO2_M               BIT(5)
 66 #define LP8788_EN_ALDO3_M               BIT(6)
 67 #define LP8788_EN_ALDO4_M               BIT(7)
 68 #define LP8788_EN_ALDO5_M               BIT(0)
 69 #define LP8788_EN_ALDO6_M               BIT(1)
 70 #define LP8788_EN_ALDO7_M               BIT(2)
 71 #define LP8788_EN_ALDO8_M               BIT(3)
 72 #define LP8788_EN_ALDO9_M               BIT(4)
 73 #define LP8788_EN_ALDO10_M              BIT(5)
 74 #define LP8788_EN_SEL_DLDO911_M         BIT(0)  /* Addr 10h */
 75 #define LP8788_EN_SEL_DLDO7_M           BIT(1)
 76 #define LP8788_EN_SEL_ALDO7_M           BIT(2)
 77 #define LP8788_EN_SEL_ALDO5_M           BIT(3)
 78 #define LP8788_EN_SEL_ALDO234_M         BIT(4)
 79 #define LP8788_EN_SEL_ALDO1_M           BIT(5)
 80 #define LP8788_VOUT_5BIT_M              0x1F    /* Addr 2Eh ~ 43h */
 81 #define LP8788_VOUT_4BIT_M              0x0F
 82 #define LP8788_VOUT_3BIT_M              0x07
 83 #define LP8788_VOUT_1BIT_M              0x01
 84 #define LP8788_STARTUP_TIME_M           0xF8    /* Addr 44h ~ 59h */
 85 #define LP8788_STARTUP_TIME_S           3
 86 
 87 #define ENABLE_TIME_USEC                32
 88 #define ENABLE                          GPIOF_OUT_INIT_HIGH
 89 #define DISABLE                         GPIOF_OUT_INIT_LOW
 90 
 91 enum lp8788_ldo_id {
 92         DLDO1,
 93         DLDO2,
 94         DLDO3,
 95         DLDO4,
 96         DLDO5,
 97         DLDO6,
 98         DLDO7,
 99         DLDO8,
100         DLDO9,
101         DLDO10,
102         DLDO11,
103         DLDO12,
104         ALDO1,
105         ALDO2,
106         ALDO3,
107         ALDO4,
108         ALDO5,
109         ALDO6,
110         ALDO7,
111         ALDO8,
112         ALDO9,
113         ALDO10,
114 };
115 
116 struct lp8788_ldo {
117         struct lp8788 *lp;
118         struct regulator_desc *desc;
119         struct regulator_dev *regulator;
120         struct lp8788_ldo_enable_pin *en_pin;
121 };
122 
123 /* DLDO 1, 2, 3, 9 voltage table */
124 static const int lp8788_dldo1239_vtbl[] = {
125         1800000, 1900000, 2000000, 2100000, 2200000, 2300000, 2400000, 2500000,
126         2600000, 2700000, 2800000, 2900000, 3000000, 2850000, 2850000, 2850000,
127         2850000, 2850000, 2850000, 2850000, 2850000, 2850000, 2850000, 2850000,
128         2850000, 2850000, 2850000, 2850000, 2850000, 2850000, 2850000, 2850000,
129 };
130 
131 /* DLDO 4 voltage table */
132 static const int lp8788_dldo4_vtbl[] = { 1800000, 3000000 };
133 
134 /* DLDO 5, 7, 8 and ALDO 6 voltage table */
135 static const int lp8788_dldo578_aldo6_vtbl[] = {
136         1800000, 1900000, 2000000, 2100000, 2200000, 2300000, 2400000, 2500000,
137         2600000, 2700000, 2800000, 2900000, 3000000, 3000000, 3000000, 3000000,
138 };
139 
140 /* DLDO 6 voltage table */
141 static const int lp8788_dldo6_vtbl[] = {
142         3000000, 3100000, 3200000, 3300000, 3400000, 3500000, 3600000, 3600000,
143 };
144 
145 /* DLDO 10, 11 voltage table */
146 static const int lp8788_dldo1011_vtbl[] = {
147         1100000, 1150000, 1200000, 1250000, 1300000, 1350000, 1400000, 1450000,
148         1500000, 1500000, 1500000, 1500000, 1500000, 1500000, 1500000, 1500000,
149 };
150 
151 /* ALDO 1 voltage table */
152 static const int lp8788_aldo1_vtbl[] = { 1800000, 2850000 };
153 
154 /* ALDO 7 voltage table */
155 static const int lp8788_aldo7_vtbl[] = {
156         1200000, 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1800000,
157 };
158 
159 static int lp8788_ldo_enable_time(struct regulator_dev *rdev)
160 {
161         struct lp8788_ldo *ldo = rdev_get_drvdata(rdev);
162         enum lp8788_ldo_id id = rdev_get_id(rdev);
163         u8 val, addr = LP8788_DLDO1_TIMESTEP + id;
164 
165         if (lp8788_read_byte(ldo->lp, addr, &val))
166                 return -EINVAL;
167 
168         val = (val & LP8788_STARTUP_TIME_M) >> LP8788_STARTUP_TIME_S;
169 
170         return ENABLE_TIME_USEC * val;
171 }
172 
173 static struct regulator_ops lp8788_ldo_voltage_table_ops = {
174         .list_voltage = regulator_list_voltage_table,
175         .set_voltage_sel = regulator_set_voltage_sel_regmap,
176         .get_voltage_sel = regulator_get_voltage_sel_regmap,
177         .enable = regulator_enable_regmap,
178         .disable = regulator_disable_regmap,
179         .is_enabled = regulator_is_enabled_regmap,
180         .enable_time = lp8788_ldo_enable_time,
181 };
182 
183 static struct regulator_ops lp8788_ldo_voltage_fixed_ops = {
184         .list_voltage = regulator_list_voltage_linear,
185         .enable = regulator_enable_regmap,
186         .disable = regulator_disable_regmap,
187         .is_enabled = regulator_is_enabled_regmap,
188         .enable_time = lp8788_ldo_enable_time,
189 };
190 
191 static struct regulator_desc lp8788_dldo_desc[] = {
192         {
193                 .name = "dldo1",
194                 .id = DLDO1,
195                 .ops = &lp8788_ldo_voltage_table_ops,
196                 .n_voltages = ARRAY_SIZE(lp8788_dldo1239_vtbl),
197                 .volt_table = lp8788_dldo1239_vtbl,
198                 .type = REGULATOR_VOLTAGE,
199                 .owner = THIS_MODULE,
200                 .vsel_reg = LP8788_DLDO1_VOUT,
201                 .vsel_mask = LP8788_VOUT_5BIT_M,
202                 .enable_reg = LP8788_EN_LDO_A,
203                 .enable_mask = LP8788_EN_DLDO1_M,
204         },
205         {
206                 .name = "dldo2",
207                 .id = DLDO2,
208                 .ops = &lp8788_ldo_voltage_table_ops,
209                 .n_voltages = ARRAY_SIZE(lp8788_dldo1239_vtbl),
210                 .volt_table = lp8788_dldo1239_vtbl,
211                 .type = REGULATOR_VOLTAGE,
212                 .owner = THIS_MODULE,
213                 .vsel_reg = LP8788_DLDO2_VOUT,
214                 .vsel_mask = LP8788_VOUT_5BIT_M,
215                 .enable_reg = LP8788_EN_LDO_A,
216                 .enable_mask = LP8788_EN_DLDO2_M,
217         },
218         {
219                 .name = "dldo3",
220                 .id = DLDO3,
221                 .ops = &lp8788_ldo_voltage_table_ops,
222                 .n_voltages = ARRAY_SIZE(lp8788_dldo1239_vtbl),
223                 .volt_table = lp8788_dldo1239_vtbl,
224                 .type = REGULATOR_VOLTAGE,
225                 .owner = THIS_MODULE,
226                 .vsel_reg = LP8788_DLDO3_VOUT,
227                 .vsel_mask = LP8788_VOUT_5BIT_M,
228                 .enable_reg = LP8788_EN_LDO_A,
229                 .enable_mask = LP8788_EN_DLDO3_M,
230         },
231         {
232                 .name = "dldo4",
233                 .id = DLDO4,
234                 .ops = &lp8788_ldo_voltage_table_ops,
235                 .n_voltages = ARRAY_SIZE(lp8788_dldo4_vtbl),
236                 .volt_table = lp8788_dldo4_vtbl,
237                 .type = REGULATOR_VOLTAGE,
238                 .owner = THIS_MODULE,
239                 .vsel_reg = LP8788_DLDO4_VOUT,
240                 .vsel_mask = LP8788_VOUT_1BIT_M,
241                 .enable_reg = LP8788_EN_LDO_A,
242                 .enable_mask = LP8788_EN_DLDO4_M,
243         },
244         {
245                 .name = "dldo5",
246                 .id = DLDO5,
247                 .ops = &lp8788_ldo_voltage_table_ops,
248                 .n_voltages = ARRAY_SIZE(lp8788_dldo578_aldo6_vtbl),
249                 .volt_table = lp8788_dldo578_aldo6_vtbl,
250                 .type = REGULATOR_VOLTAGE,
251                 .owner = THIS_MODULE,
252                 .vsel_reg = LP8788_DLDO5_VOUT,
253                 .vsel_mask = LP8788_VOUT_4BIT_M,
254                 .enable_reg = LP8788_EN_LDO_A,
255                 .enable_mask = LP8788_EN_DLDO5_M,
256         },
257         {
258                 .name = "dldo6",
259                 .id = DLDO6,
260                 .ops = &lp8788_ldo_voltage_table_ops,
261                 .n_voltages = ARRAY_SIZE(lp8788_dldo6_vtbl),
262                 .volt_table = lp8788_dldo6_vtbl,
263                 .type = REGULATOR_VOLTAGE,
264                 .owner = THIS_MODULE,
265                 .vsel_reg = LP8788_DLDO6_VOUT,
266                 .vsel_mask = LP8788_VOUT_3BIT_M,
267                 .enable_reg = LP8788_EN_LDO_A,
268                 .enable_mask = LP8788_EN_DLDO6_M,
269         },
270         {
271                 .name = "dldo7",
272                 .id = DLDO7,
273                 .ops = &lp8788_ldo_voltage_table_ops,
274                 .n_voltages = ARRAY_SIZE(lp8788_dldo578_aldo6_vtbl),
275                 .volt_table = lp8788_dldo578_aldo6_vtbl,
276                 .type = REGULATOR_VOLTAGE,
277                 .owner = THIS_MODULE,
278                 .vsel_reg = LP8788_DLDO7_VOUT,
279                 .vsel_mask = LP8788_VOUT_4BIT_M,
280                 .enable_reg = LP8788_EN_LDO_A,
281                 .enable_mask = LP8788_EN_DLDO7_M,
282         },
283         {
284                 .name = "dldo8",
285                 .id = DLDO8,
286                 .ops = &lp8788_ldo_voltage_table_ops,
287                 .n_voltages = ARRAY_SIZE(lp8788_dldo578_aldo6_vtbl),
288                 .volt_table = lp8788_dldo578_aldo6_vtbl,
289                 .type = REGULATOR_VOLTAGE,
290                 .owner = THIS_MODULE,
291                 .vsel_reg = LP8788_DLDO8_VOUT,
292                 .vsel_mask = LP8788_VOUT_4BIT_M,
293                 .enable_reg = LP8788_EN_LDO_A,
294                 .enable_mask = LP8788_EN_DLDO8_M,
295         },
296         {
297                 .name = "dldo9",
298                 .id = DLDO9,
299                 .ops = &lp8788_ldo_voltage_table_ops,
300                 .n_voltages = ARRAY_SIZE(lp8788_dldo1239_vtbl),
301                 .volt_table = lp8788_dldo1239_vtbl,
302                 .type = REGULATOR_VOLTAGE,
303                 .owner = THIS_MODULE,
304                 .vsel_reg = LP8788_DLDO9_VOUT,
305                 .vsel_mask = LP8788_VOUT_5BIT_M,
306                 .enable_reg = LP8788_EN_LDO_B,
307                 .enable_mask = LP8788_EN_DLDO9_M,
308         },
309         {
310                 .name = "dldo10",
311                 .id = DLDO10,
312                 .ops = &lp8788_ldo_voltage_table_ops,
313                 .n_voltages = ARRAY_SIZE(lp8788_dldo1011_vtbl),
314                 .volt_table = lp8788_dldo1011_vtbl,
315                 .type = REGULATOR_VOLTAGE,
316                 .owner = THIS_MODULE,
317                 .vsel_reg = LP8788_DLDO10_VOUT,
318                 .vsel_mask = LP8788_VOUT_4BIT_M,
319                 .enable_reg = LP8788_EN_LDO_B,
320                 .enable_mask = LP8788_EN_DLDO10_M,
321         },
322         {
323                 .name = "dldo11",
324                 .id = DLDO11,
325                 .ops = &lp8788_ldo_voltage_table_ops,
326                 .n_voltages = ARRAY_SIZE(lp8788_dldo1011_vtbl),
327                 .volt_table = lp8788_dldo1011_vtbl,
328                 .type = REGULATOR_VOLTAGE,
329                 .owner = THIS_MODULE,
330                 .vsel_reg = LP8788_DLDO11_VOUT,
331                 .vsel_mask = LP8788_VOUT_4BIT_M,
332                 .enable_reg = LP8788_EN_LDO_B,
333                 .enable_mask = LP8788_EN_DLDO11_M,
334         },
335         {
336                 .name = "dldo12",
337                 .id = DLDO12,
338                 .ops = &lp8788_ldo_voltage_fixed_ops,
339                 .n_voltages = 1,
340                 .type = REGULATOR_VOLTAGE,
341                 .owner = THIS_MODULE,
342                 .enable_reg = LP8788_EN_LDO_B,
343                 .enable_mask = LP8788_EN_DLDO12_M,
344                 .min_uV = 2500000,
345         },
346 };
347 
348 static struct regulator_desc lp8788_aldo_desc[] = {
349         {
350                 .name = "aldo1",
351                 .id = ALDO1,
352                 .ops = &lp8788_ldo_voltage_table_ops,
353                 .n_voltages = ARRAY_SIZE(lp8788_aldo1_vtbl),
354                 .volt_table = lp8788_aldo1_vtbl,
355                 .type = REGULATOR_VOLTAGE,
356                 .owner = THIS_MODULE,
357                 .vsel_reg = LP8788_ALDO1_VOUT,
358                 .vsel_mask = LP8788_VOUT_1BIT_M,
359                 .enable_reg = LP8788_EN_LDO_B,
360                 .enable_mask = LP8788_EN_ALDO1_M,
361         },
362         {
363                 .name = "aldo2",
364                 .id = ALDO2,
365                 .ops = &lp8788_ldo_voltage_fixed_ops,
366                 .n_voltages = 1,
367                 .type = REGULATOR_VOLTAGE,
368                 .owner = THIS_MODULE,
369                 .enable_reg = LP8788_EN_LDO_B,
370                 .enable_mask = LP8788_EN_ALDO2_M,
371                 .min_uV = 2850000,
372         },
373         {
374                 .name = "aldo3",
375                 .id = ALDO3,
376                 .ops = &lp8788_ldo_voltage_fixed_ops,
377                 .n_voltages = 1,
378                 .type = REGULATOR_VOLTAGE,
379                 .owner = THIS_MODULE,
380                 .enable_reg = LP8788_EN_LDO_B,
381                 .enable_mask = LP8788_EN_ALDO3_M,
382                 .min_uV = 2850000,
383         },
384         {
385                 .name = "aldo4",
386                 .id = ALDO4,
387                 .ops = &lp8788_ldo_voltage_fixed_ops,
388                 .n_voltages = 1,
389                 .type = REGULATOR_VOLTAGE,
390                 .owner = THIS_MODULE,
391                 .enable_reg = LP8788_EN_LDO_B,
392                 .enable_mask = LP8788_EN_ALDO4_M,
393                 .min_uV = 2850000,
394         },
395         {
396                 .name = "aldo5",
397                 .id = ALDO5,
398                 .ops = &lp8788_ldo_voltage_fixed_ops,
399                 .n_voltages = 1,
400                 .type = REGULATOR_VOLTAGE,
401                 .owner = THIS_MODULE,
402                 .enable_reg = LP8788_EN_LDO_C,
403                 .enable_mask = LP8788_EN_ALDO5_M,
404                 .min_uV = 2850000,
405         },
406         {
407                 .name = "aldo6",
408                 .id = ALDO6,
409                 .ops = &lp8788_ldo_voltage_table_ops,
410                 .n_voltages = ARRAY_SIZE(lp8788_dldo578_aldo6_vtbl),
411                 .volt_table = lp8788_dldo578_aldo6_vtbl,
412                 .type = REGULATOR_VOLTAGE,
413                 .owner = THIS_MODULE,
414                 .vsel_reg = LP8788_ALDO6_VOUT,
415                 .vsel_mask = LP8788_VOUT_4BIT_M,
416                 .enable_reg = LP8788_EN_LDO_C,
417                 .enable_mask = LP8788_EN_ALDO6_M,
418         },
419         {
420                 .name = "aldo7",
421                 .id = ALDO7,
422                 .ops = &lp8788_ldo_voltage_table_ops,
423                 .n_voltages = ARRAY_SIZE(lp8788_aldo7_vtbl),
424                 .volt_table = lp8788_aldo7_vtbl,
425                 .type = REGULATOR_VOLTAGE,
426                 .owner = THIS_MODULE,
427                 .vsel_reg = LP8788_ALDO7_VOUT,
428                 .vsel_mask = LP8788_VOUT_3BIT_M,
429                 .enable_reg = LP8788_EN_LDO_C,
430                 .enable_mask = LP8788_EN_ALDO7_M,
431         },
432         {
433                 .name = "aldo8",
434                 .id = ALDO8,
435                 .ops = &lp8788_ldo_voltage_fixed_ops,
436                 .n_voltages = 1,
437                 .type = REGULATOR_VOLTAGE,
438                 .owner = THIS_MODULE,
439                 .enable_reg = LP8788_EN_LDO_C,
440                 .enable_mask = LP8788_EN_ALDO8_M,
441                 .min_uV = 2500000,
442         },
443         {
444                 .name = "aldo9",
445                 .id = ALDO9,
446                 .ops = &lp8788_ldo_voltage_fixed_ops,
447                 .n_voltages = 1,
448                 .type = REGULATOR_VOLTAGE,
449                 .owner = THIS_MODULE,
450                 .enable_reg = LP8788_EN_LDO_C,
451                 .enable_mask = LP8788_EN_ALDO9_M,
452                 .min_uV = 2500000,
453         },
454         {
455                 .name = "aldo10",
456                 .id = ALDO10,
457                 .ops = &lp8788_ldo_voltage_fixed_ops,
458                 .n_voltages = 1,
459                 .type = REGULATOR_VOLTAGE,
460                 .owner = THIS_MODULE,
461                 .enable_reg = LP8788_EN_LDO_C,
462                 .enable_mask = LP8788_EN_ALDO10_M,
463                 .min_uV = 1100000,
464         },
465 };
466 
467 static int lp8788_config_ldo_enable_mode(struct platform_device *pdev,
468                                         struct lp8788_ldo *ldo,
469                                         enum lp8788_ldo_id id)
470 {
471         struct lp8788 *lp = ldo->lp;
472         struct lp8788_platform_data *pdata = lp->pdata;
473         enum lp8788_ext_ldo_en_id enable_id;
474         u8 en_mask[] = {
475                 [EN_ALDO1]   = LP8788_EN_SEL_ALDO1_M,
476                 [EN_ALDO234] = LP8788_EN_SEL_ALDO234_M,
477                 [EN_ALDO5]   = LP8788_EN_SEL_ALDO5_M,
478                 [EN_ALDO7]   = LP8788_EN_SEL_ALDO7_M,
479                 [EN_DLDO7]   = LP8788_EN_SEL_DLDO7_M,
480                 [EN_DLDO911] = LP8788_EN_SEL_DLDO911_M,
481         };
482 
483         switch (id) {
484         case DLDO7:
485                 enable_id = EN_DLDO7;
486                 break;
487         case DLDO9:
488         case DLDO11:
489                 enable_id = EN_DLDO911;
490                 break;
491         case ALDO1:
492                 enable_id = EN_ALDO1;
493                 break;
494         case ALDO2 ... ALDO4:
495                 enable_id = EN_ALDO234;
496                 break;
497         case ALDO5:
498                 enable_id = EN_ALDO5;
499                 break;
500         case ALDO7:
501                 enable_id = EN_ALDO7;
502                 break;
503         default:
504                 return 0;
505         }
506 
507         /* if no platform data for ldo pin, then set default enable mode */
508         if (!pdata || !pdata->ldo_pin || !pdata->ldo_pin[enable_id])
509                 goto set_default_ldo_enable_mode;
510 
511         ldo->en_pin = pdata->ldo_pin[enable_id];
512         return 0;
513 
514 set_default_ldo_enable_mode:
515         return lp8788_update_bits(lp, LP8788_EN_SEL, en_mask[enable_id], 0);
516 }
517 
518 static int lp8788_dldo_probe(struct platform_device *pdev)
519 {
520         struct lp8788 *lp = dev_get_drvdata(pdev->dev.parent);
521         int id = pdev->id;
522         struct lp8788_ldo *ldo;
523         struct regulator_config cfg = { };
524         struct regulator_dev *rdev;
525         int ret;
526 
527         ldo = devm_kzalloc(&pdev->dev, sizeof(struct lp8788_ldo), GFP_KERNEL);
528         if (!ldo)
529                 return -ENOMEM;
530 
531         ldo->lp = lp;
532         ret = lp8788_config_ldo_enable_mode(pdev, ldo, id);
533         if (ret)
534                 return ret;
535 
536         if (ldo->en_pin) {
537                 cfg.ena_gpio = ldo->en_pin->gpio;
538                 cfg.ena_gpio_flags = ldo->en_pin->init_state;
539         }
540 
541         cfg.dev = pdev->dev.parent;
542         cfg.init_data = lp->pdata ? lp->pdata->dldo_data[id] : NULL;
543         cfg.driver_data = ldo;
544         cfg.regmap = lp->regmap;
545 
546         rdev = devm_regulator_register(&pdev->dev, &lp8788_dldo_desc[id], &cfg);
547         if (IS_ERR(rdev)) {
548                 ret = PTR_ERR(rdev);
549                 dev_err(&pdev->dev, "DLDO%d regulator register err = %d\n",
550                                 id + 1, ret);
551                 return ret;
552         }
553 
554         ldo->regulator = rdev;
555         platform_set_drvdata(pdev, ldo);
556 
557         return 0;
558 }
559 
560 static struct platform_driver lp8788_dldo_driver = {
561         .probe = lp8788_dldo_probe,
562         .driver = {
563                 .name = LP8788_DEV_DLDO,
564                 .owner = THIS_MODULE,
565         },
566 };
567 
568 static int lp8788_aldo_probe(struct platform_device *pdev)
569 {
570         struct lp8788 *lp = dev_get_drvdata(pdev->dev.parent);
571         int id = pdev->id;
572         struct lp8788_ldo *ldo;
573         struct regulator_config cfg = { };
574         struct regulator_dev *rdev;
575         int ret;
576 
577         ldo = devm_kzalloc(&pdev->dev, sizeof(struct lp8788_ldo), GFP_KERNEL);
578         if (!ldo)
579                 return -ENOMEM;
580 
581         ldo->lp = lp;
582         ret = lp8788_config_ldo_enable_mode(pdev, ldo, id + ALDO1);
583         if (ret)
584                 return ret;
585 
586         if (ldo->en_pin) {
587                 cfg.ena_gpio = ldo->en_pin->gpio;
588                 cfg.ena_gpio_flags = ldo->en_pin->init_state;
589         }
590 
591         cfg.dev = pdev->dev.parent;
592         cfg.init_data = lp->pdata ? lp->pdata->aldo_data[id] : NULL;
593         cfg.driver_data = ldo;
594         cfg.regmap = lp->regmap;
595 
596         rdev = devm_regulator_register(&pdev->dev, &lp8788_aldo_desc[id], &cfg);
597         if (IS_ERR(rdev)) {
598                 ret = PTR_ERR(rdev);
599                 dev_err(&pdev->dev, "ALDO%d regulator register err = %d\n",
600                                 id + 1, ret);
601                 return ret;
602         }
603 
604         ldo->regulator = rdev;
605         platform_set_drvdata(pdev, ldo);
606 
607         return 0;
608 }
609 
610 static struct platform_driver lp8788_aldo_driver = {
611         .probe = lp8788_aldo_probe,
612         .driver = {
613                 .name = LP8788_DEV_ALDO,
614                 .owner = THIS_MODULE,
615         },
616 };
617 
618 static int __init lp8788_ldo_init(void)
619 {
620         int ret;
621 
622         ret = platform_driver_register(&lp8788_dldo_driver);
623         if (ret)
624                 return ret;
625 
626         return platform_driver_register(&lp8788_aldo_driver);
627 }
628 subsys_initcall(lp8788_ldo_init);
629 
630 static void __exit lp8788_ldo_exit(void)
631 {
632         platform_driver_unregister(&lp8788_aldo_driver);
633         platform_driver_unregister(&lp8788_dldo_driver);
634 }
635 module_exit(lp8788_ldo_exit);
636 
637 MODULE_DESCRIPTION("TI LP8788 LDO Driver");
638 MODULE_AUTHOR("Milo Kim");
639 MODULE_LICENSE("GPL");
640 MODULE_ALIAS("platform:lp8788-dldo");
641 MODULE_ALIAS("platform:lp8788-aldo");
642 

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