blob: 9ea1bf26bd137b4b4e33dcede0c6c1551ff6d79c [file] [log] [blame]
AnilKumar Cha4930772012-01-11 16:11:49 +05301/*
2 * tps65217-regulator.c
3 *
4 * Regulator driver for TPS65217 PMIC
5 *
6 * Copyright (C) 2011 Texas Instruments 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
13 * kind, whether express or implied; without even the implied warranty
14 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 */
17
18#include <linux/kernel.h>
19#include <linux/module.h>
20#include <linux/device.h>
21#include <linux/init.h>
22#include <linux/err.h>
23#include <linux/platform_device.h>
24
AnilKumar Ch1922b0f2012-08-13 20:36:05 +053025#include <linux/regulator/of_regulator.h>
AnilKumar Cha4930772012-01-11 16:11:49 +053026#include <linux/regulator/driver.h>
27#include <linux/regulator/machine.h>
28#include <linux/mfd/tps65217.h>
29
Axel Lin6290d602013-08-30 18:06:06 +080030#define TPS65217_REGULATOR(_name, _id, _ops, _n, _vr, _vm, _em, _t, _lr, _nlr) \
AnilKumar Cha4930772012-01-11 16:11:49 +053031 { \
32 .name = _name, \
33 .id = _id, \
34 .ops = &_ops, \
35 .n_voltages = _n, \
36 .type = REGULATOR_VOLTAGE, \
37 .owner = THIS_MODULE, \
Axel Linb4bc9ef2012-06-13 11:27:11 +080038 .vsel_reg = _vr, \
39 .vsel_mask = _vm, \
40 .enable_reg = TPS65217_REG_ENABLE, \
41 .enable_mask = _em, \
Axel Lind172f312012-06-29 09:45:16 +080042 .volt_table = _t, \
Axel Lin6290d602013-08-30 18:06:06 +080043 .linear_ranges = _lr, \
44 .n_linear_ranges = _nlr, \
AnilKumar Cha4930772012-01-11 16:11:49 +053045 } \
46
Axel Lind172f312012-06-29 09:45:16 +080047static const unsigned int LDO1_VSEL_table[] = {
AnilKumar Cha4930772012-01-11 16:11:49 +053048 1000000, 1100000, 1200000, 1250000,
49 1300000, 1350000, 1400000, 1500000,
50 1600000, 1800000, 2500000, 2750000,
51 2800000, 3000000, 3100000, 3300000,
52};
53
Axel Lin6290d602013-08-30 18:06:06 +080054static const struct regulator_linear_range tps65217_uv1_ranges[] = {
Axel Lin8828bae2013-10-11 09:32:18 +080055 REGULATOR_LINEAR_RANGE(900000, 0, 24, 25000),
56 REGULATOR_LINEAR_RANGE(1550000, 25, 30, 50000),
57 REGULATOR_LINEAR_RANGE(1850000, 31, 52, 50000),
58 REGULATOR_LINEAR_RANGE(3000000, 53, 55, 100000),
59 REGULATOR_LINEAR_RANGE(3300000, 56, 62, 0),
Axel Lin6290d602013-08-30 18:06:06 +080060};
AnilKumar Cha4930772012-01-11 16:11:49 +053061
Axel Lin6290d602013-08-30 18:06:06 +080062static const struct regulator_linear_range tps65217_uv2_ranges[] = {
Axel Lin8828bae2013-10-11 09:32:18 +080063 REGULATOR_LINEAR_RANGE(1500000, 0, 8, 50000),
64 REGULATOR_LINEAR_RANGE(2000000, 9, 13, 100000),
65 REGULATOR_LINEAR_RANGE(2450000, 14, 31, 50000),
AnilKumar Cha4930772012-01-11 16:11:49 +053066};
67
Axel Linfc569112012-03-12 12:11:46 +080068static int tps65217_pmic_enable(struct regulator_dev *dev)
AnilKumar Cha4930772012-01-11 16:11:49 +053069{
70 struct tps65217 *tps = rdev_get_drvdata(dev);
Axel Linfc569112012-03-12 12:11:46 +080071 unsigned int rid = rdev_get_id(dev);
AnilKumar Cha4930772012-01-11 16:11:49 +053072
Axel Linfc569112012-03-12 12:11:46 +080073 if (rid < TPS65217_DCDC_1 || rid > TPS65217_LDO_4)
AnilKumar Cha4930772012-01-11 16:11:49 +053074 return -EINVAL;
75
76 /* Enable the regulator and password protection is level 1 */
77 return tps65217_set_bits(tps, TPS65217_REG_ENABLE,
Axel Linb4bc9ef2012-06-13 11:27:11 +080078 dev->desc->enable_mask, dev->desc->enable_mask,
79 TPS65217_PROTECT_L1);
AnilKumar Cha4930772012-01-11 16:11:49 +053080}
81
Axel Linfc569112012-03-12 12:11:46 +080082static int tps65217_pmic_disable(struct regulator_dev *dev)
AnilKumar Cha4930772012-01-11 16:11:49 +053083{
84 struct tps65217 *tps = rdev_get_drvdata(dev);
Axel Linfc569112012-03-12 12:11:46 +080085 unsigned int rid = rdev_get_id(dev);
AnilKumar Cha4930772012-01-11 16:11:49 +053086
Axel Linfc569112012-03-12 12:11:46 +080087 if (rid < TPS65217_DCDC_1 || rid > TPS65217_LDO_4)
AnilKumar Cha4930772012-01-11 16:11:49 +053088 return -EINVAL;
89
90 /* Disable the regulator and password protection is level 1 */
91 return tps65217_clear_bits(tps, TPS65217_REG_ENABLE,
Axel Linb4bc9ef2012-06-13 11:27:11 +080092 dev->desc->enable_mask, TPS65217_PROTECT_L1);
AnilKumar Cha4930772012-01-11 16:11:49 +053093}
94
Axel Lin8b222852012-05-15 15:17:58 +080095static int tps65217_pmic_set_voltage_sel(struct regulator_dev *dev,
96 unsigned selector)
AnilKumar Cha4930772012-01-11 16:11:49 +053097{
98 int ret;
99 struct tps65217 *tps = rdev_get_drvdata(dev);
Axel Linfc569112012-03-12 12:11:46 +0800100 unsigned int rid = rdev_get_id(dev);
AnilKumar Cha4930772012-01-11 16:11:49 +0530101
AnilKumar Cha4930772012-01-11 16:11:49 +0530102 /* Set the voltage based on vsel value and write protect level is 2 */
Axel Linb4bc9ef2012-06-13 11:27:11 +0800103 ret = tps65217_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask,
Axel Lin8b222852012-05-15 15:17:58 +0800104 selector, TPS65217_PROTECT_L2);
Axel Linfc569112012-03-12 12:11:46 +0800105
106 /* Set GO bit for DCDCx to initiate voltage transistion */
107 switch (rid) {
108 case TPS65217_DCDC_1 ... TPS65217_DCDC_3:
109 ret = tps65217_set_bits(tps, TPS65217_REG_DEFSLEW,
110 TPS65217_DEFSLEW_GO, TPS65217_DEFSLEW_GO,
111 TPS65217_PROTECT_L2);
112 break;
113 }
114
115 return ret;
AnilKumar Cha4930772012-01-11 16:11:49 +0530116}
117
Axel Linfc569112012-03-12 12:11:46 +0800118/* Operations permitted on DCDCx, LDO2, LDO3 and LDO4 */
119static struct regulator_ops tps65217_pmic_ops = {
Axel Linb4bc9ef2012-06-13 11:27:11 +0800120 .is_enabled = regulator_is_enabled_regmap,
Axel Linfc569112012-03-12 12:11:46 +0800121 .enable = tps65217_pmic_enable,
122 .disable = tps65217_pmic_disable,
Axel Linb4bc9ef2012-06-13 11:27:11 +0800123 .get_voltage_sel = regulator_get_voltage_sel_regmap,
Axel Lin8b222852012-05-15 15:17:58 +0800124 .set_voltage_sel = tps65217_pmic_set_voltage_sel,
Axel Lin6290d602013-08-30 18:06:06 +0800125 .list_voltage = regulator_list_voltage_linear_range,
126 .map_voltage = regulator_map_voltage_linear_range,
AnilKumar Cha4930772012-01-11 16:11:49 +0530127};
128
129/* Operations permitted on LDO1 */
130static struct regulator_ops tps65217_pmic_ldo1_ops = {
Axel Linb4bc9ef2012-06-13 11:27:11 +0800131 .is_enabled = regulator_is_enabled_regmap,
Axel Linfc569112012-03-12 12:11:46 +0800132 .enable = tps65217_pmic_enable,
133 .disable = tps65217_pmic_disable,
Axel Linb4bc9ef2012-06-13 11:27:11 +0800134 .get_voltage_sel = regulator_get_voltage_sel_regmap,
Axel Lin8b222852012-05-15 15:17:58 +0800135 .set_voltage_sel = tps65217_pmic_set_voltage_sel,
Axel Lind172f312012-06-29 09:45:16 +0800136 .list_voltage = regulator_list_voltage_table,
AnilKumar Cha4930772012-01-11 16:11:49 +0530137};
138
Axel Lin78637a32012-04-06 08:31:51 +0800139static const struct regulator_desc regulators[] = {
Axel Linb4bc9ef2012-06-13 11:27:11 +0800140 TPS65217_REGULATOR("DCDC1", TPS65217_DCDC_1, tps65217_pmic_ops, 64,
141 TPS65217_REG_DEFDCDC1, TPS65217_DEFDCDCX_DCDC_MASK,
Axel Lin6290d602013-08-30 18:06:06 +0800142 TPS65217_ENABLE_DC1_EN, NULL, tps65217_uv1_ranges,
143 2), /* DCDC1 voltage range: 900000 ~ 1800000 */
Axel Linb4bc9ef2012-06-13 11:27:11 +0800144 TPS65217_REGULATOR("DCDC2", TPS65217_DCDC_2, tps65217_pmic_ops, 64,
145 TPS65217_REG_DEFDCDC2, TPS65217_DEFDCDCX_DCDC_MASK,
Axel Lin6290d602013-08-30 18:06:06 +0800146 TPS65217_ENABLE_DC2_EN, NULL, tps65217_uv1_ranges,
147 ARRAY_SIZE(tps65217_uv1_ranges)),
Axel Linb4bc9ef2012-06-13 11:27:11 +0800148 TPS65217_REGULATOR("DCDC3", TPS65217_DCDC_3, tps65217_pmic_ops, 64,
149 TPS65217_REG_DEFDCDC3, TPS65217_DEFDCDCX_DCDC_MASK,
Axel Lin6290d602013-08-30 18:06:06 +0800150 TPS65217_ENABLE_DC3_EN, NULL, tps65217_uv1_ranges,
151 1), /* DCDC3 voltage range: 900000 ~ 1500000 */
Axel Linb4bc9ef2012-06-13 11:27:11 +0800152 TPS65217_REGULATOR("LDO1", TPS65217_LDO_1, tps65217_pmic_ldo1_ops, 16,
153 TPS65217_REG_DEFLDO1, TPS65217_DEFLDO1_LDO1_MASK,
Axel Lin6290d602013-08-30 18:06:06 +0800154 TPS65217_ENABLE_LDO1_EN, LDO1_VSEL_table, NULL, 0),
Axel Linb4bc9ef2012-06-13 11:27:11 +0800155 TPS65217_REGULATOR("LDO2", TPS65217_LDO_2, tps65217_pmic_ops, 64,
156 TPS65217_REG_DEFLDO2, TPS65217_DEFLDO2_LDO2_MASK,
Axel Lin6290d602013-08-30 18:06:06 +0800157 TPS65217_ENABLE_LDO2_EN, NULL, tps65217_uv1_ranges,
158 ARRAY_SIZE(tps65217_uv1_ranges)),
Axel Linb4bc9ef2012-06-13 11:27:11 +0800159 TPS65217_REGULATOR("LDO3", TPS65217_LDO_3, tps65217_pmic_ops, 32,
160 TPS65217_REG_DEFLS1, TPS65217_DEFLDO3_LDO3_MASK,
Axel Lind172f312012-06-29 09:45:16 +0800161 TPS65217_ENABLE_LS1_EN | TPS65217_DEFLDO3_LDO3_EN,
Axel Lin6290d602013-08-30 18:06:06 +0800162 NULL, tps65217_uv2_ranges,
163 ARRAY_SIZE(tps65217_uv2_ranges)),
Axel Linb4bc9ef2012-06-13 11:27:11 +0800164 TPS65217_REGULATOR("LDO4", TPS65217_LDO_4, tps65217_pmic_ops, 32,
165 TPS65217_REG_DEFLS2, TPS65217_DEFLDO4_LDO4_MASK,
Axel Lind172f312012-06-29 09:45:16 +0800166 TPS65217_ENABLE_LS2_EN | TPS65217_DEFLDO4_LDO4_EN,
Axel Lin6290d602013-08-30 18:06:06 +0800167 NULL, tps65217_uv2_ranges,
168 ARRAY_SIZE(tps65217_uv2_ranges)),
AnilKumar Cha4930772012-01-11 16:11:49 +0530169};
170
AnilKumar Ch1922b0f2012-08-13 20:36:05 +0530171#ifdef CONFIG_OF
172static struct of_regulator_match reg_matches[] = {
173 { .name = "dcdc1", .driver_data = (void *)TPS65217_DCDC_1 },
174 { .name = "dcdc2", .driver_data = (void *)TPS65217_DCDC_2 },
175 { .name = "dcdc3", .driver_data = (void *)TPS65217_DCDC_3 },
176 { .name = "ldo1", .driver_data = (void *)TPS65217_LDO_1 },
177 { .name = "ldo2", .driver_data = (void *)TPS65217_LDO_2 },
178 { .name = "ldo3", .driver_data = (void *)TPS65217_LDO_3 },
179 { .name = "ldo4", .driver_data = (void *)TPS65217_LDO_4 },
180};
181
182static struct tps65217_board *tps65217_parse_dt(struct platform_device *pdev)
183{
184 struct tps65217 *tps = dev_get_drvdata(pdev->dev.parent);
185 struct device_node *node = tps->dev->of_node;
186 struct tps65217_board *pdata;
187 struct device_node *regs;
188 int i, count;
189
190 regs = of_find_node_by_name(node, "regulators");
191 if (!regs)
192 return NULL;
193
Axel Lin5bce8332013-01-24 10:27:30 +0800194 count = of_regulator_match(&pdev->dev, regs, reg_matches,
195 TPS65217_NUM_REGULATOR);
AnilKumar Ch1922b0f2012-08-13 20:36:05 +0530196 of_node_put(regs);
197 if ((count < 0) || (count > TPS65217_NUM_REGULATOR))
198 return NULL;
199
200 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
201 if (!pdata)
202 return NULL;
203
204 for (i = 0; i < count; i++) {
205 if (!reg_matches[i].init_data || !reg_matches[i].of_node)
206 continue;
207
208 pdata->tps65217_init_data[i] = reg_matches[i].init_data;
209 pdata->of_node[i] = reg_matches[i].of_node;
210 }
211
212 return pdata;
213}
214#else
215static struct tps65217_board *tps65217_parse_dt(struct platform_device *pdev)
216{
217 return NULL;
218}
219#endif
220
Bill Pembertona5023572012-11-19 13:22:22 -0500221static int tps65217_regulator_probe(struct platform_device *pdev)
AnilKumar Cha4930772012-01-11 16:11:49 +0530222{
AnilKumar Ch1922b0f2012-08-13 20:36:05 +0530223 struct tps65217 *tps = dev_get_drvdata(pdev->dev.parent);
224 struct tps65217_board *pdata = dev_get_platdata(tps->dev);
225 struct regulator_init_data *reg_data;
AnilKumar Cha4930772012-01-11 16:11:49 +0530226 struct regulator_dev *rdev;
Mark Brownc1727082012-04-04 00:50:22 +0100227 struct regulator_config config = { };
Sachin Kamat4aac1982013-09-04 17:17:49 +0530228 int i;
AnilKumar Cha4930772012-01-11 16:11:49 +0530229
AnilKumar Ch1922b0f2012-08-13 20:36:05 +0530230 if (tps->dev->of_node)
231 pdata = tps65217_parse_dt(pdev);
AnilKumar Cha4930772012-01-11 16:11:49 +0530232
AnilKumar Ch1922b0f2012-08-13 20:36:05 +0530233 if (!pdata) {
234 dev_err(&pdev->dev, "Platform data not found\n");
235 return -EINVAL;
236 }
Mark Brownc1727082012-04-04 00:50:22 +0100237
AnilKumar Ch1922b0f2012-08-13 20:36:05 +0530238 if (tps65217_chip_id(tps) != TPS65217) {
239 dev_err(&pdev->dev, "Invalid tps chip version\n");
240 return -ENODEV;
241 }
AnilKumar Cha4930772012-01-11 16:11:49 +0530242
AnilKumar Ch1922b0f2012-08-13 20:36:05 +0530243 platform_set_drvdata(pdev, tps);
AnilKumar Cha4930772012-01-11 16:11:49 +0530244
AnilKumar Ch1922b0f2012-08-13 20:36:05 +0530245 for (i = 0; i < TPS65217_NUM_REGULATOR; i++) {
246
247 reg_data = pdata->tps65217_init_data[i];
248
249 /*
250 * Regulator API handles empty constraints but not NULL
251 * constraints
252 */
253 if (!reg_data)
254 continue;
255
256 /* Register the regulators */
AnilKumar Ch1922b0f2012-08-13 20:36:05 +0530257 config.dev = tps->dev;
258 config.init_data = reg_data;
259 config.driver_data = tps;
260 config.regmap = tps->regmap;
261 if (tps->dev->of_node)
262 config.of_node = pdata->of_node[i];
263
Sachin Kamat4aac1982013-09-04 17:17:49 +0530264 rdev = devm_regulator_register(&pdev->dev, &regulators[i],
265 &config);
AnilKumar Ch1922b0f2012-08-13 20:36:05 +0530266 if (IS_ERR(rdev)) {
267 dev_err(tps->dev, "failed to register %s regulator\n",
268 pdev->name);
Sachin Kamat4aac1982013-09-04 17:17:49 +0530269 return PTR_ERR(rdev);
AnilKumar Ch1922b0f2012-08-13 20:36:05 +0530270 }
271
272 /* Save regulator for cleanup */
273 tps->rdev[i] = rdev;
274 }
AnilKumar Cha4930772012-01-11 16:11:49 +0530275 return 0;
AnilKumar Cha4930772012-01-11 16:11:49 +0530276}
277
278static struct platform_driver tps65217_regulator_driver = {
279 .driver = {
280 .name = "tps65217-pmic",
281 },
282 .probe = tps65217_regulator_probe,
AnilKumar Cha4930772012-01-11 16:11:49 +0530283};
284
285static int __init tps65217_regulator_init(void)
286{
287 return platform_driver_register(&tps65217_regulator_driver);
288}
289subsys_initcall(tps65217_regulator_init);
290
291static void __exit tps65217_regulator_exit(void)
292{
293 platform_driver_unregister(&tps65217_regulator_driver);
294}
295module_exit(tps65217_regulator_exit);
296
AnilKumar Cha4930772012-01-11 16:11:49 +0530297MODULE_AUTHOR("AnilKumar Ch <anilkumar@ti.com>");
298MODULE_DESCRIPTION("TPS65217 voltage regulator driver");
299MODULE_ALIAS("platform:tps65217-pmic");
300MODULE_LICENSE("GPL v2");