blob: 98e66ce26723fac64c2cbd7b836f03c878465e28 [file] [log] [blame]
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +05301/*
2 * tps6507x-regulator.c
3 *
4 * Regulator driver for TPS65073 PMIC
5 *
6 * Copyright (C) 2009 Texas Instrument Incorporated - http://www.ti.com/
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation version 2.
11 *
12 * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
13 * whether express or implied; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 */
17
18#include <linux/kernel.h>
19#include <linux/module.h>
20#include <linux/init.h>
21#include <linux/err.h>
22#include <linux/platform_device.h>
23#include <linux/regulator/driver.h>
24#include <linux/regulator/machine.h>
Anuj Aggarwal7d148312010-07-12 17:54:06 +053025#include <linux/regulator/tps6507x.h>
Vishwanathrao Badarkhe, Manish6116ad92013-01-24 16:25:18 +053026#include <linux/of.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090027#include <linux/slab.h>
Todd Fischerd183fcc2010-04-05 20:23:56 -060028#include <linux/mfd/tps6507x.h>
Vishwanathrao Badarkhe, Manish6116ad92013-01-24 16:25:18 +053029#include <linux/regulator/of_regulator.h>
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +053030
31/* DCDC's */
32#define TPS6507X_DCDC_1 0
33#define TPS6507X_DCDC_2 1
34#define TPS6507X_DCDC_3 2
35/* LDOs */
36#define TPS6507X_LDO_1 3
37#define TPS6507X_LDO_2 4
38
39#define TPS6507X_MAX_REG_ID TPS6507X_LDO_2
40
41/* Number of step-down converters available */
42#define TPS6507X_NUM_DCDC 3
43/* Number of LDO voltage regulators available */
44#define TPS6507X_NUM_LDO 2
45/* Number of total regulators available */
46#define TPS6507X_NUM_REGULATOR (TPS6507X_NUM_DCDC + TPS6507X_NUM_LDO)
47
Axel Lin055917a2012-05-20 10:39:12 +080048/* Supported voltage values for regulators (in microVolts) */
49static const unsigned int VDCDCx_VSEL_table[] = {
50 725000, 750000, 775000, 800000,
51 825000, 850000, 875000, 900000,
52 925000, 950000, 975000, 1000000,
53 1025000, 1050000, 1075000, 1100000,
54 1125000, 1150000, 1175000, 1200000,
55 1225000, 1250000, 1275000, 1300000,
56 1325000, 1350000, 1375000, 1400000,
57 1425000, 1450000, 1475000, 1500000,
58 1550000, 1600000, 1650000, 1700000,
59 1750000, 1800000, 1850000, 1900000,
60 1950000, 2000000, 2050000, 2100000,
61 2150000, 2200000, 2250000, 2300000,
62 2350000, 2400000, 2450000, 2500000,
63 2550000, 2600000, 2650000, 2700000,
64 2750000, 2800000, 2850000, 2900000,
65 3000000, 3100000, 3200000, 3300000,
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +053066};
67
Axel Lin055917a2012-05-20 10:39:12 +080068static const unsigned int LDO1_VSEL_table[] = {
69 1000000, 1100000, 1200000, 1250000,
70 1300000, 1350000, 1400000, 1500000,
71 1600000, 1800000, 2500000, 2750000,
72 2800000, 3000000, 3100000, 3300000,
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +053073};
74
Axel Lin93b07e72012-06-05 08:58:13 +080075/* The voltage mapping table for LDO2 is the same as VDCDCx */
76#define LDO2_VSEL_table VDCDCx_VSEL_table
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +053077
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +053078struct tps_info {
79 const char *name;
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +053080 u8 table_len;
Axel Lin055917a2012-05-20 10:39:12 +080081 const unsigned int *table;
Anuj Aggarwal7d148312010-07-12 17:54:06 +053082
83 /* Does DCDC high or the low register defines output voltage? */
84 bool defdcdc_default;
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +053085};
86
Anuj Aggarwal7d148312010-07-12 17:54:06 +053087static struct tps_info tps6507x_pmic_regs[] = {
Todd Fischer31dd6a22010-04-08 09:04:55 +020088 {
89 .name = "VDCDC1",
Todd Fischer31dd6a22010-04-08 09:04:55 +020090 .table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
91 .table = VDCDCx_VSEL_table,
92 },
93 {
94 .name = "VDCDC2",
Todd Fischer31dd6a22010-04-08 09:04:55 +020095 .table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
96 .table = VDCDCx_VSEL_table,
97 },
98 {
99 .name = "VDCDC3",
Todd Fischer31dd6a22010-04-08 09:04:55 +0200100 .table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
101 .table = VDCDCx_VSEL_table,
102 },
103 {
104 .name = "LDO1",
Todd Fischer31dd6a22010-04-08 09:04:55 +0200105 .table_len = ARRAY_SIZE(LDO1_VSEL_table),
106 .table = LDO1_VSEL_table,
107 },
108 {
109 .name = "LDO2",
Todd Fischer31dd6a22010-04-08 09:04:55 +0200110 .table_len = ARRAY_SIZE(LDO2_VSEL_table),
111 .table = LDO2_VSEL_table,
112 },
113};
114
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600115struct tps6507x_pmic {
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530116 struct regulator_desc desc[TPS6507X_NUM_REGULATOR];
Todd Fischer31dd6a22010-04-08 09:04:55 +0200117 struct tps6507x_dev *mfd;
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530118 struct regulator_dev *rdev[TPS6507X_NUM_REGULATOR];
Anuj Aggarwal7d148312010-07-12 17:54:06 +0530119 struct tps_info *info[TPS6507X_NUM_REGULATOR];
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530120 struct mutex io_lock;
121};
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600122static inline int tps6507x_pmic_read(struct tps6507x_pmic *tps, u8 reg)
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530123{
Todd Fischer31dd6a22010-04-08 09:04:55 +0200124 u8 val;
125 int err;
126
127 err = tps->mfd->read_dev(tps->mfd, reg, 1, &val);
128
129 if (err)
130 return err;
131
132 return val;
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530133}
134
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600135static inline int tps6507x_pmic_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530136{
Todd Fischer31dd6a22010-04-08 09:04:55 +0200137 return tps->mfd->write_dev(tps->mfd, reg, 1, &val);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530138}
139
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600140static int tps6507x_pmic_set_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530141{
142 int err, data;
143
144 mutex_lock(&tps->io_lock);
145
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600146 data = tps6507x_pmic_read(tps, reg);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530147 if (data < 0) {
Todd Fischer31dd6a22010-04-08 09:04:55 +0200148 dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530149 err = data;
150 goto out;
151 }
152
153 data |= mask;
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600154 err = tps6507x_pmic_write(tps, reg, data);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530155 if (err)
Todd Fischer31dd6a22010-04-08 09:04:55 +0200156 dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530157
158out:
159 mutex_unlock(&tps->io_lock);
160 return err;
161}
162
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600163static int tps6507x_pmic_clear_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530164{
165 int err, data;
166
167 mutex_lock(&tps->io_lock);
168
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600169 data = tps6507x_pmic_read(tps, reg);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530170 if (data < 0) {
Todd Fischer31dd6a22010-04-08 09:04:55 +0200171 dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530172 err = data;
173 goto out;
174 }
175
176 data &= ~mask;
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600177 err = tps6507x_pmic_write(tps, reg, data);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530178 if (err)
Todd Fischer31dd6a22010-04-08 09:04:55 +0200179 dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530180
181out:
182 mutex_unlock(&tps->io_lock);
183 return err;
184}
185
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600186static int tps6507x_pmic_reg_read(struct tps6507x_pmic *tps, u8 reg)
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530187{
188 int data;
189
190 mutex_lock(&tps->io_lock);
191
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600192 data = tps6507x_pmic_read(tps, reg);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530193 if (data < 0)
Todd Fischer31dd6a22010-04-08 09:04:55 +0200194 dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530195
196 mutex_unlock(&tps->io_lock);
197 return data;
198}
199
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600200static int tps6507x_pmic_reg_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530201{
202 int err;
203
204 mutex_lock(&tps->io_lock);
205
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600206 err = tps6507x_pmic_write(tps, reg, val);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530207 if (err < 0)
Todd Fischer31dd6a22010-04-08 09:04:55 +0200208 dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530209
210 mutex_unlock(&tps->io_lock);
211 return err;
212}
213
Axel Linf2933d32012-03-12 15:57:50 +0800214static int tps6507x_pmic_is_enabled(struct regulator_dev *dev)
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530215{
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600216 struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
Axel Linf2933d32012-03-12 15:57:50 +0800217 int data, rid = rdev_get_id(dev);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530218 u8 shift;
219
Axel Linf2933d32012-03-12 15:57:50 +0800220 if (rid < TPS6507X_DCDC_1 || rid > TPS6507X_LDO_2)
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530221 return -EINVAL;
222
Axel Linf2933d32012-03-12 15:57:50 +0800223 shift = TPS6507X_MAX_REG_ID - rid;
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600224 data = tps6507x_pmic_reg_read(tps, TPS6507X_REG_CON_CTRL1);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530225
226 if (data < 0)
227 return data;
228 else
229 return (data & 1<<shift) ? 1 : 0;
230}
231
Axel Linf2933d32012-03-12 15:57:50 +0800232static int tps6507x_pmic_enable(struct regulator_dev *dev)
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530233{
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600234 struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
Axel Linf2933d32012-03-12 15:57:50 +0800235 int rid = rdev_get_id(dev);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530236 u8 shift;
237
Axel Linf2933d32012-03-12 15:57:50 +0800238 if (rid < TPS6507X_DCDC_1 || rid > TPS6507X_LDO_2)
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530239 return -EINVAL;
240
Axel Linf2933d32012-03-12 15:57:50 +0800241 shift = TPS6507X_MAX_REG_ID - rid;
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600242 return tps6507x_pmic_set_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530243}
244
Axel Linf2933d32012-03-12 15:57:50 +0800245static int tps6507x_pmic_disable(struct regulator_dev *dev)
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530246{
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600247 struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
Axel Linf2933d32012-03-12 15:57:50 +0800248 int rid = rdev_get_id(dev);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530249 u8 shift;
250
Axel Linf2933d32012-03-12 15:57:50 +0800251 if (rid < TPS6507X_DCDC_1 || rid > TPS6507X_LDO_2)
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530252 return -EINVAL;
253
Axel Linf2933d32012-03-12 15:57:50 +0800254 shift = TPS6507X_MAX_REG_ID - rid;
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600255 return tps6507x_pmic_clear_bits(tps, TPS6507X_REG_CON_CTRL1,
256 1 << shift);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530257}
258
Axel Lin7c842a12012-04-20 18:33:52 +0800259static int tps6507x_pmic_get_voltage_sel(struct regulator_dev *dev)
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530260{
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600261 struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
Axel Linf2933d32012-03-12 15:57:50 +0800262 int data, rid = rdev_get_id(dev);
263 u8 reg, mask;
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530264
Axel Linf2933d32012-03-12 15:57:50 +0800265 switch (rid) {
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530266 case TPS6507X_DCDC_1:
267 reg = TPS6507X_REG_DEFDCDC1;
Axel Linf2933d32012-03-12 15:57:50 +0800268 mask = TPS6507X_DEFDCDCX_DCDC_MASK;
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530269 break;
270 case TPS6507X_DCDC_2:
Axel Linf2933d32012-03-12 15:57:50 +0800271 if (tps->info[rid]->defdcdc_default)
Anuj Aggarwal7d148312010-07-12 17:54:06 +0530272 reg = TPS6507X_REG_DEFDCDC2_HIGH;
273 else
274 reg = TPS6507X_REG_DEFDCDC2_LOW;
Axel Linf2933d32012-03-12 15:57:50 +0800275 mask = TPS6507X_DEFDCDCX_DCDC_MASK;
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530276 break;
277 case TPS6507X_DCDC_3:
Axel Linf2933d32012-03-12 15:57:50 +0800278 if (tps->info[rid]->defdcdc_default)
Anuj Aggarwal7d148312010-07-12 17:54:06 +0530279 reg = TPS6507X_REG_DEFDCDC3_HIGH;
280 else
281 reg = TPS6507X_REG_DEFDCDC3_LOW;
Axel Linf2933d32012-03-12 15:57:50 +0800282 mask = TPS6507X_DEFDCDCX_DCDC_MASK;
283 break;
284 case TPS6507X_LDO_1:
285 reg = TPS6507X_REG_LDO_CTRL1;
286 mask = TPS6507X_REG_LDO_CTRL1_LDO1_MASK;
287 break;
288 case TPS6507X_LDO_2:
289 reg = TPS6507X_REG_DEFLDO2;
290 mask = TPS6507X_REG_DEFLDO2_LDO2_MASK;
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530291 break;
292 default:
293 return -EINVAL;
294 }
295
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600296 data = tps6507x_pmic_reg_read(tps, reg);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530297 if (data < 0)
298 return data;
299
Axel Linf2933d32012-03-12 15:57:50 +0800300 data &= mask;
Axel Lin7c842a12012-04-20 18:33:52 +0800301 return data;
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530302}
303
Axel Linca61a7b2012-03-12 15:59:54 +0800304static int tps6507x_pmic_set_voltage_sel(struct regulator_dev *dev,
305 unsigned selector)
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530306{
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600307 struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
Axel Linca61a7b2012-03-12 15:59:54 +0800308 int data, rid = rdev_get_id(dev);
Axel Linf2933d32012-03-12 15:57:50 +0800309 u8 reg, mask;
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530310
Axel Linf2933d32012-03-12 15:57:50 +0800311 switch (rid) {
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530312 case TPS6507X_DCDC_1:
313 reg = TPS6507X_REG_DEFDCDC1;
Axel Linf2933d32012-03-12 15:57:50 +0800314 mask = TPS6507X_DEFDCDCX_DCDC_MASK;
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530315 break;
316 case TPS6507X_DCDC_2:
Axel Linf2933d32012-03-12 15:57:50 +0800317 if (tps->info[rid]->defdcdc_default)
Anuj Aggarwal7d148312010-07-12 17:54:06 +0530318 reg = TPS6507X_REG_DEFDCDC2_HIGH;
319 else
320 reg = TPS6507X_REG_DEFDCDC2_LOW;
Axel Linf2933d32012-03-12 15:57:50 +0800321 mask = TPS6507X_DEFDCDCX_DCDC_MASK;
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530322 break;
323 case TPS6507X_DCDC_3:
Axel Linf2933d32012-03-12 15:57:50 +0800324 if (tps->info[rid]->defdcdc_default)
Anuj Aggarwal7d148312010-07-12 17:54:06 +0530325 reg = TPS6507X_REG_DEFDCDC3_HIGH;
326 else
327 reg = TPS6507X_REG_DEFDCDC3_LOW;
Axel Linf2933d32012-03-12 15:57:50 +0800328 mask = TPS6507X_DEFDCDCX_DCDC_MASK;
329 break;
330 case TPS6507X_LDO_1:
331 reg = TPS6507X_REG_LDO_CTRL1;
332 mask = TPS6507X_REG_LDO_CTRL1_LDO1_MASK;
333 break;
334 case TPS6507X_LDO_2:
335 reg = TPS6507X_REG_DEFLDO2;
336 mask = TPS6507X_REG_DEFLDO2_LDO2_MASK;
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530337 break;
338 default:
339 return -EINVAL;
340 }
341
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600342 data = tps6507x_pmic_reg_read(tps, reg);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530343 if (data < 0)
344 return data;
345
346 data &= ~mask;
Axel Linca61a7b2012-03-12 15:59:54 +0800347 data |= selector;
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530348
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600349 return tps6507x_pmic_reg_write(tps, reg, data);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530350}
351
Axel Linf2933d32012-03-12 15:57:50 +0800352static struct regulator_ops tps6507x_pmic_ops = {
353 .is_enabled = tps6507x_pmic_is_enabled,
354 .enable = tps6507x_pmic_enable,
355 .disable = tps6507x_pmic_disable,
Axel Lin7c842a12012-04-20 18:33:52 +0800356 .get_voltage_sel = tps6507x_pmic_get_voltage_sel,
Axel Linca61a7b2012-03-12 15:59:54 +0800357 .set_voltage_sel = tps6507x_pmic_set_voltage_sel,
Axel Lin055917a2012-05-20 10:39:12 +0800358 .list_voltage = regulator_list_voltage_table,
Axel Lina1bb63a2013-04-25 11:33:42 +0800359 .map_voltage = regulator_map_voltage_ascend,
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530360};
361
Vishwanathrao Badarkhe, Manish6116ad92013-01-24 16:25:18 +0530362static struct of_regulator_match tps6507x_matches[] = {
363 { .name = "VDCDC1"},
364 { .name = "VDCDC2"},
365 { .name = "VDCDC3"},
366 { .name = "LDO1"},
367 { .name = "LDO2"},
368};
369
370static struct tps6507x_board *tps6507x_parse_dt_reg_data(
371 struct platform_device *pdev,
372 struct of_regulator_match **tps6507x_reg_matches)
373{
374 struct tps6507x_board *tps_board;
375 struct device_node *np = pdev->dev.parent->of_node;
376 struct device_node *regulators;
377 struct of_regulator_match *matches;
378 static struct regulator_init_data *reg_data;
379 int idx = 0, count, ret;
380
381 tps_board = devm_kzalloc(&pdev->dev, sizeof(*tps_board),
382 GFP_KERNEL);
Sachin Kamatfe23ce02014-02-20 14:23:14 +0530383 if (!tps_board)
Vishwanathrao Badarkhe, Manish6116ad92013-01-24 16:25:18 +0530384 return NULL;
Vishwanathrao Badarkhe, Manish6116ad92013-01-24 16:25:18 +0530385
Sachin Kamate3d4edf2014-02-14 17:20:01 +0530386 regulators = of_get_child_by_name(np, "regulators");
Vishwanathrao Badarkhe, Manish6116ad92013-01-24 16:25:18 +0530387 if (!regulators) {
388 dev_err(&pdev->dev, "regulator node not found\n");
389 return NULL;
390 }
391
392 count = ARRAY_SIZE(tps6507x_matches);
393 matches = tps6507x_matches;
394
Axel Lin0ce7d002013-01-27 20:54:40 +0800395 ret = of_regulator_match(&pdev->dev, regulators, matches, count);
Sachin Kamataaacb0e2014-02-17 14:33:36 +0530396 of_node_put(regulators);
Vishwanathrao Badarkhe, Manish6116ad92013-01-24 16:25:18 +0530397 if (ret < 0) {
398 dev_err(&pdev->dev, "Error parsing regulator init data: %d\n",
399 ret);
400 return NULL;
401 }
402
403 *tps6507x_reg_matches = matches;
404
405 reg_data = devm_kzalloc(&pdev->dev, (sizeof(struct regulator_init_data)
406 * TPS6507X_NUM_REGULATOR), GFP_KERNEL);
Sachin Kamatfe23ce02014-02-20 14:23:14 +0530407 if (!reg_data)
Vishwanathrao Badarkhe, Manish6116ad92013-01-24 16:25:18 +0530408 return NULL;
Vishwanathrao Badarkhe, Manish6116ad92013-01-24 16:25:18 +0530409
410 tps_board->tps6507x_pmic_init_data = reg_data;
411
412 for (idx = 0; idx < count; idx++) {
413 if (!matches[idx].init_data || !matches[idx].of_node)
414 continue;
415
416 memcpy(&reg_data[idx], matches[idx].init_data,
417 sizeof(struct regulator_init_data));
418
419 }
420
421 return tps_board;
422}
Manish Badarkhe4246e552014-02-06 00:06:00 +0530423
Bill Pembertona5023572012-11-19 13:22:22 -0500424static int tps6507x_pmic_probe(struct platform_device *pdev)
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530425{
Todd Fischer31dd6a22010-04-08 09:04:55 +0200426 struct tps6507x_dev *tps6507x_dev = dev_get_drvdata(pdev->dev.parent);
Anuj Aggarwal7d148312010-07-12 17:54:06 +0530427 struct tps_info *info = &tps6507x_pmic_regs[0];
Mark Brownc1727082012-04-04 00:50:22 +0100428 struct regulator_config config = { };
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530429 struct regulator_init_data *init_data;
430 struct regulator_dev *rdev;
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600431 struct tps6507x_pmic *tps;
Todd Fischer0bc20bb2010-04-05 20:23:57 -0600432 struct tps6507x_board *tps_board;
Vishwanathrao Badarkhe, Manish6116ad92013-01-24 16:25:18 +0530433 struct of_regulator_match *tps6507x_reg_matches = NULL;
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530434 int i;
Dmitry Torokhov56c23492010-02-23 23:38:12 -0800435 int error;
Vishwanathrao Badarkhe, Manish6116ad92013-01-24 16:25:18 +0530436 unsigned int prop;
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530437
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530438 /**
Todd Fischer0bc20bb2010-04-05 20:23:57 -0600439 * tps_board points to pmic related constants
440 * coming from the board-evm file.
441 */
442
Todd Fischer31dd6a22010-04-08 09:04:55 +0200443 tps_board = dev_get_platdata(tps6507x_dev->dev);
Manish Badarkhe4246e552014-02-06 00:06:00 +0530444 if (IS_ENABLED(CONFIG_OF) && !tps_board &&
445 tps6507x_dev->dev->of_node)
Vishwanathrao Badarkhe, Manish6116ad92013-01-24 16:25:18 +0530446 tps_board = tps6507x_parse_dt_reg_data(pdev,
Manish Badarkhe4246e552014-02-06 00:06:00 +0530447 &tps6507x_reg_matches);
Todd Fischer0bc20bb2010-04-05 20:23:57 -0600448 if (!tps_board)
449 return -EINVAL;
450
451 /**
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530452 * init_data points to array of regulator_init structures
453 * coming from the board-evm file.
454 */
Todd Fischer0bc20bb2010-04-05 20:23:57 -0600455 init_data = tps_board->tps6507x_pmic_init_data;
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530456 if (!init_data)
Todd Fischer0bc20bb2010-04-05 20:23:57 -0600457 return -EINVAL;
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530458
Axel Lin9eb0c422012-04-11 14:40:18 +0800459 tps = devm_kzalloc(&pdev->dev, sizeof(*tps), GFP_KERNEL);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530460 if (!tps)
461 return -ENOMEM;
462
463 mutex_init(&tps->io_lock);
464
465 /* common for all regulators */
Todd Fischer31dd6a22010-04-08 09:04:55 +0200466 tps->mfd = tps6507x_dev;
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530467
468 for (i = 0; i < TPS6507X_NUM_REGULATOR; i++, info++, init_data++) {
469 /* Register the regulators */
470 tps->info[i] = info;
Anuj Aggarwal7d148312010-07-12 17:54:06 +0530471 if (init_data->driver_data) {
472 struct tps6507x_reg_platform_data *data =
Manish Badarkhe4246e552014-02-06 00:06:00 +0530473 init_data->driver_data;
Anuj Aggarwal7d148312010-07-12 17:54:06 +0530474 tps->info[i]->defdcdc_default = data->defdcdc_default;
475 }
476
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530477 tps->desc[i].name = info->name;
Axel Lin77fa44d2011-05-12 13:47:50 +0800478 tps->desc[i].id = i;
Axel Lin0fcdb102011-08-02 15:34:12 +0800479 tps->desc[i].n_voltages = info->table_len;
Axel Lin055917a2012-05-20 10:39:12 +0800480 tps->desc[i].volt_table = info->table;
Axel Linf2933d32012-03-12 15:57:50 +0800481 tps->desc[i].ops = &tps6507x_pmic_ops;
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530482 tps->desc[i].type = REGULATOR_VOLTAGE;
483 tps->desc[i].owner = THIS_MODULE;
484
Mark Brownc1727082012-04-04 00:50:22 +0100485 config.dev = tps6507x_dev->dev;
486 config.init_data = init_data;
487 config.driver_data = tps;
488
Vishwanathrao Badarkhe, Manish6116ad92013-01-24 16:25:18 +0530489 if (tps6507x_reg_matches) {
490 error = of_property_read_u32(
491 tps6507x_reg_matches[i].of_node,
492 "ti,defdcdc_default", &prop);
493
494 if (!error)
495 tps->info[i]->defdcdc_default = prop;
496
497 config.of_node = tps6507x_reg_matches[i].of_node;
498 }
499
Sachin Kamat71b710e2013-09-04 17:17:47 +0530500 rdev = devm_regulator_register(&pdev->dev, &tps->desc[i],
501 &config);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530502 if (IS_ERR(rdev)) {
Todd Fischer31dd6a22010-04-08 09:04:55 +0200503 dev_err(tps6507x_dev->dev,
504 "failed to register %s regulator\n",
505 pdev->name);
Sachin Kamat71b710e2013-09-04 17:17:47 +0530506 return PTR_ERR(rdev);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530507 }
508
509 /* Save regulator for cleanup */
510 tps->rdev[i] = rdev;
511 }
512
Todd Fischer31dd6a22010-04-08 09:04:55 +0200513 tps6507x_dev->pmic = tps;
Axel Lind7399fa2010-08-09 15:51:23 +0800514 platform_set_drvdata(pdev, tps6507x_dev);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530515
516 return 0;
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530517}
518
Todd Fischer31dd6a22010-04-08 09:04:55 +0200519static struct platform_driver tps6507x_pmic_driver = {
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530520 .driver = {
Todd Fischer31dd6a22010-04-08 09:04:55 +0200521 .name = "tps6507x-pmic",
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530522 .owner = THIS_MODULE,
523 },
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600524 .probe = tps6507x_pmic_probe,
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530525};
526
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600527static int __init tps6507x_pmic_init(void)
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530528{
Todd Fischer31dd6a22010-04-08 09:04:55 +0200529 return platform_driver_register(&tps6507x_pmic_driver);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530530}
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600531subsys_initcall(tps6507x_pmic_init);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530532
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600533static void __exit tps6507x_pmic_cleanup(void)
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530534{
Todd Fischer31dd6a22010-04-08 09:04:55 +0200535 platform_driver_unregister(&tps6507x_pmic_driver);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530536}
Todd Fischer4ce5ba52010-04-05 20:23:58 -0600537module_exit(tps6507x_pmic_cleanup);
Anuj Aggarwal3fa5b8e2009-08-21 00:39:39 +0530538
539MODULE_AUTHOR("Texas Instruments");
540MODULE_DESCRIPTION("TPS6507x voltage regulator driver");
Liam Girdwood9e108d32009-08-24 10:31:34 +0100541MODULE_LICENSE("GPL v2");
Todd Fischer31dd6a22010-04-08 09:04:55 +0200542MODULE_ALIAS("platform:tps6507x-pmic");