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1/*
2 * Regulator driver for TI TPS65912x PMICs
3 *
4 * Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/
5 * Andrew F. Davis <afd@ti.com>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 *
11 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
12 * kind, whether expressed or implied; without even the implied warranty
13 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License version 2 for more details.
15 *
16 * Based on the TPS65218 driver and the previous TPS65912 driver by
17 * Margarita Olaya Cabrera <magi@slimlogic.co.uk>
18 */
19
20#include <linux/module.h>
21#include <linux/mod_devicetable.h>
22#include <linux/platform_device.h>
23#include <linux/regulator/driver.h>
24
25#include <linux/mfd/tps65912.h>
26
27enum tps65912_regulators { DCDC1, DCDC2, DCDC3, DCDC4, LDO1, LDO2, LDO3,
28 LDO4, LDO5, LDO6, LDO7, LDO8, LDO9, LDO10 };
29
30#define TPS65912_REGULATOR(_name, _id, _of_match, _ops, _vr, _er, _lr) \
31 [_id] = { \
32 .name = _name, \
33 .of_match = _of_match, \
34 .regulators_node = "regulators", \
35 .id = _id, \
36 .ops = &_ops, \
37 .n_voltages = 64, \
38 .type = REGULATOR_VOLTAGE, \
39 .owner = THIS_MODULE, \
40 .vsel_reg = _vr, \
41 .vsel_mask = 0x3f, \
42 .enable_reg = _er, \
43 .enable_mask = BIT(7), \
44 .volt_table = NULL, \
45 .linear_ranges = _lr, \
46 .n_linear_ranges = ARRAY_SIZE(_lr), \
47 }
48
49static const struct linear_range tps65912_dcdc_ranges[] = {
50 REGULATOR_LINEAR_RANGE(500000, 0x0, 0x3f, 50000),
51};
52
53static const struct linear_range tps65912_ldo_ranges[] = {
54 REGULATOR_LINEAR_RANGE(800000, 0x0, 0x20, 25000),
55 REGULATOR_LINEAR_RANGE(1650000, 0x21, 0x3c, 50000),
56 REGULATOR_LINEAR_RANGE(3100000, 0x3d, 0x3f, 100000),
57};
58
59/* Operations permitted on DCDCx */
60static struct regulator_ops tps65912_ops_dcdc = {
61 .is_enabled = regulator_is_enabled_regmap,
62 .enable = regulator_enable_regmap,
63 .disable = regulator_disable_regmap,
64 .get_voltage_sel = regulator_get_voltage_sel_regmap,
65 .set_voltage_sel = regulator_set_voltage_sel_regmap,
66 .list_voltage = regulator_list_voltage_linear_range,
67};
68
69/* Operations permitted on LDOx */
70static struct regulator_ops tps65912_ops_ldo = {
71 .is_enabled = regulator_is_enabled_regmap,
72 .enable = regulator_enable_regmap,
73 .disable = regulator_disable_regmap,
74 .get_voltage_sel = regulator_get_voltage_sel_regmap,
75 .set_voltage_sel = regulator_set_voltage_sel_regmap,
76 .list_voltage = regulator_list_voltage_linear_range,
77 .map_voltage = regulator_map_voltage_linear_range,
78};
79
80static const struct regulator_desc regulators[] = {
81 TPS65912_REGULATOR("DCDC1", DCDC1, "dcdc1", tps65912_ops_dcdc,
82 TPS65912_DCDC1_OP, TPS65912_DCDC1_CTRL,
83 tps65912_dcdc_ranges),
84 TPS65912_REGULATOR("DCDC2", DCDC2, "dcdc2", tps65912_ops_dcdc,
85 TPS65912_DCDC2_OP, TPS65912_DCDC2_CTRL,
86 tps65912_dcdc_ranges),
87 TPS65912_REGULATOR("DCDC3", DCDC3, "dcdc3", tps65912_ops_dcdc,
88 TPS65912_DCDC3_OP, TPS65912_DCDC3_CTRL,
89 tps65912_dcdc_ranges),
90 TPS65912_REGULATOR("DCDC4", DCDC4, "dcdc4", tps65912_ops_dcdc,
91 TPS65912_DCDC4_OP, TPS65912_DCDC4_CTRL,
92 tps65912_dcdc_ranges),
93 TPS65912_REGULATOR("LDO1", LDO1, "ldo1", tps65912_ops_ldo,
94 TPS65912_LDO1_OP, TPS65912_LDO1_AVS,
95 tps65912_ldo_ranges),
96 TPS65912_REGULATOR("LDO2", LDO2, "ldo2", tps65912_ops_ldo,
97 TPS65912_LDO2_OP, TPS65912_LDO2_AVS,
98 tps65912_ldo_ranges),
99 TPS65912_REGULATOR("LDO3", LDO3, "ldo3", tps65912_ops_ldo,
100 TPS65912_LDO3_OP, TPS65912_LDO3_AVS,
101 tps65912_ldo_ranges),
102 TPS65912_REGULATOR("LDO4", LDO4, "ldo4", tps65912_ops_ldo,
103 TPS65912_LDO4_OP, TPS65912_LDO4_AVS,
104 tps65912_ldo_ranges),
105 TPS65912_REGULATOR("LDO5", LDO5, "ldo5", tps65912_ops_ldo,
106 TPS65912_LDO5, TPS65912_LDO5,
107 tps65912_ldo_ranges),
108 TPS65912_REGULATOR("LDO6", LDO6, "ldo6", tps65912_ops_ldo,
109 TPS65912_LDO6, TPS65912_LDO6,
110 tps65912_ldo_ranges),
111 TPS65912_REGULATOR("LDO7", LDO7, "ldo7", tps65912_ops_ldo,
112 TPS65912_LDO7, TPS65912_LDO7,
113 tps65912_ldo_ranges),
114 TPS65912_REGULATOR("LDO8", LDO8, "ldo8", tps65912_ops_ldo,
115 TPS65912_LDO8, TPS65912_LDO8,
116 tps65912_ldo_ranges),
117 TPS65912_REGULATOR("LDO9", LDO9, "ldo9", tps65912_ops_ldo,
118 TPS65912_LDO9, TPS65912_LDO9,
119 tps65912_ldo_ranges),
120 TPS65912_REGULATOR("LDO10", LDO10, "ldo10", tps65912_ops_ldo,
121 TPS65912_LDO10, TPS65912_LDO10,
122 tps65912_ldo_ranges),
123};
124
125static int tps65912_regulator_probe(struct platform_device *pdev)
126{
127 struct tps65912 *tps = dev_get_drvdata(pdev->dev.parent);
128 struct regulator_config config = { };
129 struct regulator_dev *rdev;
130 int i;
131
132 platform_set_drvdata(pdev, tps);
133
134 config.dev = &pdev->dev;
135 config.driver_data = tps;
136 config.dev->of_node = tps->dev->of_node;
137 config.regmap = tps->regmap;
138
139 for (i = 0; i < ARRAY_SIZE(regulators); i++) {
140 rdev = devm_regulator_register(&pdev->dev, ®ulators[i],
141 &config);
142 if (IS_ERR(rdev)) {
143 dev_err(tps->dev, "failed to register %s regulator\n",
144 pdev->name);
145 return PTR_ERR(rdev);
146 }
147 }
148
149 return 0;
150}
151
152static const struct platform_device_id tps65912_regulator_id_table[] = {
153 { "tps65912-regulator", },
154 { /* sentinel */ }
155};
156MODULE_DEVICE_TABLE(platform, tps65912_regulator_id_table);
157
158static struct platform_driver tps65912_regulator_driver = {
159 .driver = {
160 .name = "tps65912-regulator",
161 },
162 .probe = tps65912_regulator_probe,
163 .id_table = tps65912_regulator_id_table,
164};
165module_platform_driver(tps65912_regulator_driver);
166
167MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
168MODULE_DESCRIPTION("TPS65912 voltage regulator driver");
169MODULE_LICENSE("GPL v2");
1/*
2 * tps65912.c -- TI tps65912
3 *
4 * Copyright 2011 Texas Instruments Inc.
5 *
6 * Author: Margarita Olaya Cabrera <magi@slimlogic.co.uk>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 * This driver is based on wm8350 implementation.
14 */
15
16#include <linux/kernel.h>
17#include <linux/module.h>
18#include <linux/init.h>
19#include <linux/err.h>
20#include <linux/platform_device.h>
21#include <linux/regulator/driver.h>
22#include <linux/regulator/machine.h>
23#include <linux/slab.h>
24#include <linux/gpio.h>
25#include <linux/mfd/tps65912.h>
26
27/* DCDC's */
28#define TPS65912_REG_DCDC1 0
29#define TPS65912_REG_DCDC2 1
30#define TPS65912_REG_DCDC3 2
31#define TPS65912_REG_DCDC4 3
32
33/* LDOs */
34#define TPS65912_REG_LDO1 4
35#define TPS65912_REG_LDO2 5
36#define TPS65912_REG_LDO3 6
37#define TPS65912_REG_LDO4 7
38#define TPS65912_REG_LDO5 8
39#define TPS65912_REG_LDO6 9
40#define TPS65912_REG_LDO7 10
41#define TPS65912_REG_LDO8 11
42#define TPS65912_REG_LDO9 12
43#define TPS65912_REG_LDO10 13
44
45/* Number of step-down converters available */
46#define TPS65912_NUM_DCDC 4
47
48/* Number of LDO voltage regulators available */
49#define TPS65912_NUM_LDO 10
50
51/* Number of total regulators available */
52#define TPS65912_NUM_REGULATOR (TPS65912_NUM_DCDC + TPS65912_NUM_LDO)
53
54#define TPS65912_REG_ENABLED 0x80
55#define OP_SELREG_MASK 0x40
56#define OP_SELREG_SHIFT 6
57
58struct tps_info {
59 const char *name;
60};
61
62static struct tps_info tps65912_regs[] = {
63 {
64 .name = "DCDC1",
65 },
66 {
67 .name = "DCDC2",
68 },
69 {
70 .name = "DCDC3",
71 },
72 {
73 .name = "DCDC4",
74 },
75 {
76 .name = "LDO1",
77 },
78 {
79 .name = "LDO2",
80 },
81 {
82 .name = "LDO3",
83 },
84 {
85 .name = "LDO4",
86 },
87 {
88 .name = "LDO5",
89 },
90 {
91 .name = "LDO6",
92 },
93 {
94 .name = "LDO7",
95 },
96 {
97 .name = "LDO8",
98 },
99 {
100 .name = "LDO9",
101 },
102 {
103 .name = "LDO10",
104 },
105};
106
107struct tps65912_reg {
108 struct regulator_desc desc[TPS65912_NUM_REGULATOR];
109 struct tps65912 *mfd;
110 struct regulator_dev *rdev[TPS65912_NUM_REGULATOR];
111 struct tps_info *info[TPS65912_NUM_REGULATOR];
112 /* for read/write access */
113 struct mutex io_lock;
114 int mode;
115 int (*get_ctrl_reg)(int);
116 int dcdc_range[TPS65912_NUM_DCDC];
117 int pwm_mode_reg;
118 int eco_reg;
119};
120
121static int tps65912_get_range(struct tps65912_reg *pmic, int id)
122{
123 struct tps65912 *mfd = pmic->mfd;
124 int range;
125
126 switch (id) {
127 case TPS65912_REG_DCDC1:
128 range = tps65912_reg_read(mfd, TPS65912_DCDC1_LIMIT);
129 break;
130 case TPS65912_REG_DCDC2:
131 range = tps65912_reg_read(mfd, TPS65912_DCDC2_LIMIT);
132 break;
133 case TPS65912_REG_DCDC3:
134 range = tps65912_reg_read(mfd, TPS65912_DCDC3_LIMIT);
135 break;
136 case TPS65912_REG_DCDC4:
137 range = tps65912_reg_read(mfd, TPS65912_DCDC4_LIMIT);
138 break;
139 default:
140 return 0;
141 }
142
143 if (range >= 0)
144 range = (range & DCDC_LIMIT_RANGE_MASK)
145 >> DCDC_LIMIT_RANGE_SHIFT;
146
147 pmic->dcdc_range[id] = range;
148 return range;
149}
150
151static unsigned long tps65912_vsel_to_uv_range0(u8 vsel)
152{
153 unsigned long uv;
154
155 uv = ((vsel * 12500) + 500000);
156 return uv;
157}
158
159static unsigned long tps65912_vsel_to_uv_range1(u8 vsel)
160{
161 unsigned long uv;
162
163 uv = ((vsel * 12500) + 700000);
164 return uv;
165}
166
167static unsigned long tps65912_vsel_to_uv_range2(u8 vsel)
168{
169 unsigned long uv;
170
171 uv = ((vsel * 25000) + 500000);
172 return uv;
173}
174
175static unsigned long tps65912_vsel_to_uv_range3(u8 vsel)
176{
177 unsigned long uv;
178
179 if (vsel == 0x3f)
180 uv = 3800000;
181 else
182 uv = ((vsel * 50000) + 500000);
183
184 return uv;
185}
186
187static unsigned long tps65912_vsel_to_uv_ldo(u8 vsel)
188{
189 unsigned long uv = 0;
190
191 if (vsel <= 32)
192 uv = ((vsel * 25000) + 800000);
193 else if (vsel > 32 && vsel <= 60)
194 uv = (((vsel - 32) * 50000) + 1600000);
195 else if (vsel > 60)
196 uv = (((vsel - 60) * 100000) + 3000000);
197
198 return uv;
199}
200
201static int tps65912_get_ctrl_register(int id)
202{
203 if (id >= TPS65912_REG_DCDC1 && id <= TPS65912_REG_LDO4)
204 return id * 3 + TPS65912_DCDC1_AVS;
205 else if (id >= TPS65912_REG_LDO5 && id <= TPS65912_REG_LDO10)
206 return id - TPS65912_REG_LDO5 + TPS65912_LDO5;
207 else
208 return -EINVAL;
209}
210
211static int tps65912_get_sel_register(struct tps65912_reg *pmic, int id)
212{
213 struct tps65912 *mfd = pmic->mfd;
214 int opvsel;
215 u8 reg = 0;
216
217 if (id >= TPS65912_REG_DCDC1 && id <= TPS65912_REG_LDO4) {
218 opvsel = tps65912_reg_read(mfd, id * 3 + TPS65912_DCDC1_OP);
219 if (opvsel & OP_SELREG_MASK)
220 reg = id * 3 + TPS65912_DCDC1_AVS;
221 else
222 reg = id * 3 + TPS65912_DCDC1_OP;
223 } else if (id >= TPS65912_REG_LDO5 && id <= TPS65912_REG_LDO10) {
224 reg = id - TPS65912_REG_LDO5 + TPS65912_LDO5;
225 } else {
226 return -EINVAL;
227 }
228
229 return reg;
230}
231
232static int tps65912_get_mode_regiters(struct tps65912_reg *pmic, int id)
233{
234 switch (id) {
235 case TPS65912_REG_DCDC1:
236 pmic->pwm_mode_reg = TPS65912_DCDC1_CTRL;
237 pmic->eco_reg = TPS65912_DCDC1_AVS;
238 break;
239 case TPS65912_REG_DCDC2:
240 pmic->pwm_mode_reg = TPS65912_DCDC2_CTRL;
241 pmic->eco_reg = TPS65912_DCDC2_AVS;
242 break;
243 case TPS65912_REG_DCDC3:
244 pmic->pwm_mode_reg = TPS65912_DCDC3_CTRL;
245 pmic->eco_reg = TPS65912_DCDC3_AVS;
246 break;
247 case TPS65912_REG_DCDC4:
248 pmic->pwm_mode_reg = TPS65912_DCDC4_CTRL;
249 pmic->eco_reg = TPS65912_DCDC4_AVS;
250 break;
251 default:
252 return -EINVAL;
253 }
254
255 return 0;
256}
257
258static int tps65912_reg_is_enabled(struct regulator_dev *dev)
259{
260 struct tps65912_reg *pmic = rdev_get_drvdata(dev);
261 struct tps65912 *mfd = pmic->mfd;
262 int reg, value, id = rdev_get_id(dev);
263
264 if (id < TPS65912_REG_DCDC1 || id > TPS65912_REG_LDO10)
265 return -EINVAL;
266
267 reg = pmic->get_ctrl_reg(id);
268 if (reg < 0)
269 return reg;
270
271 value = tps65912_reg_read(mfd, reg);
272 if (value < 0)
273 return value;
274
275 return value & TPS65912_REG_ENABLED;
276}
277
278static int tps65912_reg_enable(struct regulator_dev *dev)
279{
280 struct tps65912_reg *pmic = rdev_get_drvdata(dev);
281 struct tps65912 *mfd = pmic->mfd;
282 int id = rdev_get_id(dev);
283 int reg;
284
285 if (id < TPS65912_REG_DCDC1 || id > TPS65912_REG_LDO10)
286 return -EINVAL;
287
288 reg = pmic->get_ctrl_reg(id);
289 if (reg < 0)
290 return reg;
291
292 return tps65912_set_bits(mfd, reg, TPS65912_REG_ENABLED);
293}
294
295static int tps65912_reg_disable(struct regulator_dev *dev)
296{
297 struct tps65912_reg *pmic = rdev_get_drvdata(dev);
298 struct tps65912 *mfd = pmic->mfd;
299 int id = rdev_get_id(dev), reg;
300
301 reg = pmic->get_ctrl_reg(id);
302 if (reg < 0)
303 return reg;
304
305 return tps65912_clear_bits(mfd, reg, TPS65912_REG_ENABLED);
306}
307
308static int tps65912_set_mode(struct regulator_dev *dev, unsigned int mode)
309{
310 struct tps65912_reg *pmic = rdev_get_drvdata(dev);
311 struct tps65912 *mfd = pmic->mfd;
312 int pwm_mode, eco, id = rdev_get_id(dev);
313
314 tps65912_get_mode_regiters(pmic, id);
315
316 pwm_mode = tps65912_reg_read(mfd, pmic->pwm_mode_reg);
317 eco = tps65912_reg_read(mfd, pmic->eco_reg);
318
319 pwm_mode &= DCDCCTRL_DCDC_MODE_MASK;
320 eco &= DCDC_AVS_ECO_MASK;
321
322 switch (mode) {
323 case REGULATOR_MODE_FAST:
324 /* Verify if mode alredy set */
325 if (pwm_mode && !eco)
326 break;
327 tps65912_set_bits(mfd, pmic->pwm_mode_reg, DCDCCTRL_DCDC_MODE_MASK);
328 tps65912_clear_bits(mfd, pmic->eco_reg, DCDC_AVS_ECO_MASK);
329 break;
330 case REGULATOR_MODE_NORMAL:
331 case REGULATOR_MODE_IDLE:
332 if (!pwm_mode && !eco)
333 break;
334 tps65912_clear_bits(mfd, pmic->pwm_mode_reg, DCDCCTRL_DCDC_MODE_MASK);
335 tps65912_clear_bits(mfd, pmic->eco_reg, DCDC_AVS_ECO_MASK);
336 break;
337 case REGULATOR_MODE_STANDBY:
338 if (!pwm_mode && eco)
339 break;
340 tps65912_clear_bits(mfd, pmic->pwm_mode_reg, DCDCCTRL_DCDC_MODE_MASK);
341 tps65912_set_bits(mfd, pmic->eco_reg, DCDC_AVS_ECO_MASK);
342 break;
343 default:
344 return -EINVAL;
345 }
346
347 return 0;
348}
349
350static unsigned int tps65912_get_mode(struct regulator_dev *dev)
351{
352 struct tps65912_reg *pmic = rdev_get_drvdata(dev);
353 struct tps65912 *mfd = pmic->mfd;
354 int pwm_mode, eco, mode = 0, id = rdev_get_id(dev);
355
356 tps65912_get_mode_regiters(pmic, id);
357
358 pwm_mode = tps65912_reg_read(mfd, pmic->pwm_mode_reg);
359 eco = tps65912_reg_read(mfd, pmic->eco_reg);
360
361 pwm_mode &= DCDCCTRL_DCDC_MODE_MASK;
362 eco &= DCDC_AVS_ECO_MASK;
363
364 if (pwm_mode && !eco)
365 mode = REGULATOR_MODE_FAST;
366 else if (!pwm_mode && !eco)
367 mode = REGULATOR_MODE_NORMAL;
368 else if (!pwm_mode && eco)
369 mode = REGULATOR_MODE_STANDBY;
370
371 return mode;
372}
373
374static int tps65912_list_voltage(struct regulator_dev *dev, unsigned selector)
375{
376 struct tps65912_reg *pmic = rdev_get_drvdata(dev);
377 int range, voltage = 0, id = rdev_get_id(dev);
378
379 if (id >= TPS65912_REG_LDO1 && id <= TPS65912_REG_LDO10)
380 return tps65912_vsel_to_uv_ldo(selector);
381
382 if (id > TPS65912_REG_DCDC4)
383 return -EINVAL;
384
385 range = pmic->dcdc_range[id];
386
387 switch (range) {
388 case 0:
389 /* 0.5 - 1.2875V in 12.5mV steps */
390 voltage = tps65912_vsel_to_uv_range0(selector);
391 break;
392 case 1:
393 /* 0.7 - 1.4875V in 12.5mV steps */
394 voltage = tps65912_vsel_to_uv_range1(selector);
395 break;
396 case 2:
397 /* 0.5 - 2.075V in 25mV steps */
398 voltage = tps65912_vsel_to_uv_range2(selector);
399 break;
400 case 3:
401 /* 0.5 - 3.8V in 50mV steps */
402 voltage = tps65912_vsel_to_uv_range3(selector);
403 break;
404 }
405 return voltage;
406}
407
408static int tps65912_get_voltage_sel(struct regulator_dev *dev)
409{
410 struct tps65912_reg *pmic = rdev_get_drvdata(dev);
411 struct tps65912 *mfd = pmic->mfd;
412 int id = rdev_get_id(dev);
413 int reg, vsel;
414
415 reg = tps65912_get_sel_register(pmic, id);
416 if (reg < 0)
417 return reg;
418
419 vsel = tps65912_reg_read(mfd, reg);
420 vsel &= 0x3F;
421
422 return vsel;
423}
424
425static int tps65912_set_voltage_sel(struct regulator_dev *dev,
426 unsigned selector)
427{
428 struct tps65912_reg *pmic = rdev_get_drvdata(dev);
429 struct tps65912 *mfd = pmic->mfd;
430 int id = rdev_get_id(dev);
431 int value;
432 u8 reg;
433
434 reg = tps65912_get_sel_register(pmic, id);
435 value = tps65912_reg_read(mfd, reg);
436 value &= 0xC0;
437 return tps65912_reg_write(mfd, reg, selector | value);
438}
439
440/* Operations permitted on DCDCx */
441static struct regulator_ops tps65912_ops_dcdc = {
442 .is_enabled = tps65912_reg_is_enabled,
443 .enable = tps65912_reg_enable,
444 .disable = tps65912_reg_disable,
445 .set_mode = tps65912_set_mode,
446 .get_mode = tps65912_get_mode,
447 .get_voltage_sel = tps65912_get_voltage_sel,
448 .set_voltage_sel = tps65912_set_voltage_sel,
449 .list_voltage = tps65912_list_voltage,
450};
451
452/* Operations permitted on LDOx */
453static struct regulator_ops tps65912_ops_ldo = {
454 .is_enabled = tps65912_reg_is_enabled,
455 .enable = tps65912_reg_enable,
456 .disable = tps65912_reg_disable,
457 .get_voltage_sel = tps65912_get_voltage_sel,
458 .set_voltage_sel = tps65912_set_voltage_sel,
459 .list_voltage = tps65912_list_voltage,
460};
461
462static __devinit int tps65912_probe(struct platform_device *pdev)
463{
464 struct tps65912 *tps65912 = dev_get_drvdata(pdev->dev.parent);
465 struct regulator_config config = { };
466 struct tps_info *info;
467 struct regulator_init_data *reg_data;
468 struct regulator_dev *rdev;
469 struct tps65912_reg *pmic;
470 struct tps65912_board *pmic_plat_data;
471 int i, err;
472
473 pmic_plat_data = dev_get_platdata(tps65912->dev);
474 if (!pmic_plat_data)
475 return -EINVAL;
476
477 reg_data = pmic_plat_data->tps65912_pmic_init_data;
478
479 pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
480 if (!pmic)
481 return -ENOMEM;
482
483 mutex_init(&pmic->io_lock);
484 pmic->mfd = tps65912;
485 platform_set_drvdata(pdev, pmic);
486
487 pmic->get_ctrl_reg = &tps65912_get_ctrl_register;
488 info = tps65912_regs;
489
490 for (i = 0; i < TPS65912_NUM_REGULATOR; i++, info++, reg_data++) {
491 int range = 0;
492 /* Register the regulators */
493 pmic->info[i] = info;
494
495 pmic->desc[i].name = info->name;
496 pmic->desc[i].id = i;
497 pmic->desc[i].n_voltages = 64;
498 pmic->desc[i].ops = (i > TPS65912_REG_DCDC4 ?
499 &tps65912_ops_ldo : &tps65912_ops_dcdc);
500 pmic->desc[i].type = REGULATOR_VOLTAGE;
501 pmic->desc[i].owner = THIS_MODULE;
502 range = tps65912_get_range(pmic, i);
503
504 config.dev = tps65912->dev;
505 config.init_data = reg_data;
506 config.driver_data = pmic;
507
508 rdev = regulator_register(&pmic->desc[i], &config);
509 if (IS_ERR(rdev)) {
510 dev_err(tps65912->dev,
511 "failed to register %s regulator\n",
512 pdev->name);
513 err = PTR_ERR(rdev);
514 goto err;
515 }
516
517 /* Save regulator for cleanup */
518 pmic->rdev[i] = rdev;
519 }
520 return 0;
521
522err:
523 while (--i >= 0)
524 regulator_unregister(pmic->rdev[i]);
525 return err;
526}
527
528static int __devexit tps65912_remove(struct platform_device *pdev)
529{
530 struct tps65912_reg *tps65912_reg = platform_get_drvdata(pdev);
531 int i;
532
533 for (i = 0; i < TPS65912_NUM_REGULATOR; i++)
534 regulator_unregister(tps65912_reg->rdev[i]);
535 return 0;
536}
537
538static struct platform_driver tps65912_driver = {
539 .driver = {
540 .name = "tps65912-pmic",
541 .owner = THIS_MODULE,
542 },
543 .probe = tps65912_probe,
544 .remove = __devexit_p(tps65912_remove),
545};
546
547static int __init tps65912_init(void)
548{
549 return platform_driver_register(&tps65912_driver);
550}
551subsys_initcall(tps65912_init);
552
553static void __exit tps65912_cleanup(void)
554{
555 platform_driver_unregister(&tps65912_driver);
556}
557module_exit(tps65912_cleanup);
558
559MODULE_AUTHOR("Margarita Olaya Cabrera <magi@slimlogic.co.uk>");
560MODULE_DESCRIPTION("TPS65912 voltage regulator driver");
561MODULE_LICENSE("GPL v2");
562MODULE_ALIAS("platform:tps65912-pmic");