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Sundar R IYERc789ca22010-07-13 21:48:56 +05301/*
2 * Copyright (C) ST-Ericsson SA 2010
3 *
4 * License Terms: GNU General Public License v2
5 *
Bengt Jonssone1159e62010-12-10 11:08:44 +01006 * Authors: Sundar Iyer <sundar.iyer@stericsson.com> for ST-Ericsson
7 * Bengt Jonsson <bengt.g.jonsson@stericsson.com> for ST-Ericsson
Sundar R IYERc789ca22010-07-13 21:48:56 +05308 *
9 * AB8500 peripheral regulators
10 *
Bengt Jonssone1159e62010-12-10 11:08:44 +010011 * AB8500 supports the following regulators:
Bengt Jonssonea05ef32011-03-10 14:43:31 +010012 * VAUX1/2/3, VINTCORE, VTVOUT, VUSB, VAUDIO, VAMIC1/2, VDMIC, VANA
Sundar R IYERc789ca22010-07-13 21:48:56 +053013 */
14#include <linux/init.h>
15#include <linux/kernel.h>
Paul Gortmaker65602c32011-07-17 16:28:23 -040016#include <linux/module.h>
Sundar R IYERc789ca22010-07-13 21:48:56 +053017#include <linux/err.h>
18#include <linux/platform_device.h>
Mattias Wallin47c16972010-09-10 17:47:56 +020019#include <linux/mfd/abx500.h>
Linus Walleijee66e652011-12-02 14:16:33 +010020#include <linux/mfd/abx500/ab8500.h>
Lee Jones3a8334b2012-05-17 14:45:16 +010021#include <linux/of.h>
22#include <linux/regulator/of_regulator.h>
Sundar R IYERc789ca22010-07-13 21:48:56 +053023#include <linux/regulator/driver.h>
24#include <linux/regulator/machine.h>
25#include <linux/regulator/ab8500.h>
Lee Jones3a8334b2012-05-17 14:45:16 +010026#include <linux/slab.h>
Sundar R IYERc789ca22010-07-13 21:48:56 +053027
28/**
29 * struct ab8500_regulator_info - ab8500 regulator information
Bengt Jonssone1159e62010-12-10 11:08:44 +010030 * @dev: device pointer
Sundar R IYERc789ca22010-07-13 21:48:56 +053031 * @desc: regulator description
Sundar R IYERc789ca22010-07-13 21:48:56 +053032 * @regulator_dev: regulator device
33 * @max_uV: maximum voltage (for variable voltage supplies)
34 * @min_uV: minimum voltage (for variable voltage supplies)
35 * @fixed_uV: typical voltage (for fixed voltage supplies)
Mattias Wallin47c16972010-09-10 17:47:56 +020036 * @update_bank: bank to control on/off
Sundar R IYERc789ca22010-07-13 21:48:56 +053037 * @update_reg: register to control on/off
Bengt Jonssone1159e62010-12-10 11:08:44 +010038 * @update_mask: mask to enable/disable regulator
39 * @update_val_enable: bits to enable the regulator in normal (high power) mode
Mattias Wallin47c16972010-09-10 17:47:56 +020040 * @voltage_bank: bank to control regulator voltage
Sundar R IYERc789ca22010-07-13 21:48:56 +053041 * @voltage_reg: register to control regulator voltage
42 * @voltage_mask: mask to control regulator voltage
Bengt Jonssone1159e62010-12-10 11:08:44 +010043 * @voltages: supported voltage table
Sundar R IYERc789ca22010-07-13 21:48:56 +053044 * @voltages_len: number of supported voltages for the regulator
Linus Walleij42ab6162011-03-17 13:25:02 +010045 * @delay: startup/set voltage delay in us
Sundar R IYERc789ca22010-07-13 21:48:56 +053046 */
47struct ab8500_regulator_info {
48 struct device *dev;
49 struct regulator_desc desc;
Sundar R IYERc789ca22010-07-13 21:48:56 +053050 struct regulator_dev *regulator;
51 int max_uV;
52 int min_uV;
53 int fixed_uV;
Mattias Wallin47c16972010-09-10 17:47:56 +020054 u8 update_bank;
55 u8 update_reg;
Bengt Jonssone1159e62010-12-10 11:08:44 +010056 u8 update_mask;
57 u8 update_val_enable;
Mattias Wallin47c16972010-09-10 17:47:56 +020058 u8 voltage_bank;
59 u8 voltage_reg;
60 u8 voltage_mask;
Bengt Jonssone1159e62010-12-10 11:08:44 +010061 int const *voltages;
Sundar R IYERc789ca22010-07-13 21:48:56 +053062 int voltages_len;
Linus Walleij42ab6162011-03-17 13:25:02 +010063 unsigned int delay;
Sundar R IYERc789ca22010-07-13 21:48:56 +053064};
65
66/* voltage tables for the vauxn/vintcore supplies */
67static const int ldo_vauxn_voltages[] = {
68 1100000,
69 1200000,
70 1300000,
71 1400000,
72 1500000,
73 1800000,
74 1850000,
75 1900000,
76 2500000,
77 2650000,
78 2700000,
79 2750000,
80 2800000,
81 2900000,
82 3000000,
83 3300000,
84};
85
Bengt Jonsson2b751512010-12-10 11:08:43 +010086static const int ldo_vaux3_voltages[] = {
87 1200000,
88 1500000,
89 1800000,
90 2100000,
91 2500000,
92 2750000,
93 2790000,
94 2910000,
95};
96
Sundar R IYERc789ca22010-07-13 21:48:56 +053097static const int ldo_vintcore_voltages[] = {
98 1200000,
99 1225000,
100 1250000,
101 1275000,
102 1300000,
103 1325000,
104 1350000,
105};
106
107static int ab8500_regulator_enable(struct regulator_dev *rdev)
108{
Bengt Jonssonfc24b422010-12-10 11:08:45 +0100109 int ret;
Sundar R IYERc789ca22010-07-13 21:48:56 +0530110 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
111
Bengt Jonssonfc24b422010-12-10 11:08:45 +0100112 if (info == NULL) {
113 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
Sundar R IYERc789ca22010-07-13 21:48:56 +0530114 return -EINVAL;
Bengt Jonssonfc24b422010-12-10 11:08:45 +0100115 }
Sundar R IYERc789ca22010-07-13 21:48:56 +0530116
Mattias Wallin47c16972010-09-10 17:47:56 +0200117 ret = abx500_mask_and_set_register_interruptible(info->dev,
Bengt Jonssone1159e62010-12-10 11:08:44 +0100118 info->update_bank, info->update_reg,
119 info->update_mask, info->update_val_enable);
Sundar R IYERc789ca22010-07-13 21:48:56 +0530120 if (ret < 0)
121 dev_err(rdev_get_dev(rdev),
122 "couldn't set enable bits for regulator\n");
Bengt Jonsson09aefa12010-12-10 11:08:46 +0100123
124 dev_vdbg(rdev_get_dev(rdev),
125 "%s-enable (bank, reg, mask, value): 0x%x, 0x%x, 0x%x, 0x%x\n",
126 info->desc.name, info->update_bank, info->update_reg,
127 info->update_mask, info->update_val_enable);
128
Sundar R IYERc789ca22010-07-13 21:48:56 +0530129 return ret;
130}
131
132static int ab8500_regulator_disable(struct regulator_dev *rdev)
133{
Bengt Jonssonfc24b422010-12-10 11:08:45 +0100134 int ret;
Sundar R IYERc789ca22010-07-13 21:48:56 +0530135 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
136
Bengt Jonssonfc24b422010-12-10 11:08:45 +0100137 if (info == NULL) {
138 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
Sundar R IYERc789ca22010-07-13 21:48:56 +0530139 return -EINVAL;
Bengt Jonssonfc24b422010-12-10 11:08:45 +0100140 }
Sundar R IYERc789ca22010-07-13 21:48:56 +0530141
Mattias Wallin47c16972010-09-10 17:47:56 +0200142 ret = abx500_mask_and_set_register_interruptible(info->dev,
Bengt Jonssone1159e62010-12-10 11:08:44 +0100143 info->update_bank, info->update_reg,
144 info->update_mask, 0x0);
Sundar R IYERc789ca22010-07-13 21:48:56 +0530145 if (ret < 0)
146 dev_err(rdev_get_dev(rdev),
147 "couldn't set disable bits for regulator\n");
Bengt Jonsson09aefa12010-12-10 11:08:46 +0100148
149 dev_vdbg(rdev_get_dev(rdev),
150 "%s-disable (bank, reg, mask, value): 0x%x, 0x%x, 0x%x, 0x%x\n",
151 info->desc.name, info->update_bank, info->update_reg,
152 info->update_mask, 0x0);
153
Sundar R IYERc789ca22010-07-13 21:48:56 +0530154 return ret;
155}
156
157static int ab8500_regulator_is_enabled(struct regulator_dev *rdev)
158{
Bengt Jonssonfc24b422010-12-10 11:08:45 +0100159 int ret;
Sundar R IYERc789ca22010-07-13 21:48:56 +0530160 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
Bengt Jonsson09aefa12010-12-10 11:08:46 +0100161 u8 regval;
Sundar R IYERc789ca22010-07-13 21:48:56 +0530162
Bengt Jonssonfc24b422010-12-10 11:08:45 +0100163 if (info == NULL) {
164 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
Sundar R IYERc789ca22010-07-13 21:48:56 +0530165 return -EINVAL;
Bengt Jonssonfc24b422010-12-10 11:08:45 +0100166 }
Sundar R IYERc789ca22010-07-13 21:48:56 +0530167
Mattias Wallin47c16972010-09-10 17:47:56 +0200168 ret = abx500_get_register_interruptible(info->dev,
Bengt Jonsson09aefa12010-12-10 11:08:46 +0100169 info->update_bank, info->update_reg, &regval);
Sundar R IYERc789ca22010-07-13 21:48:56 +0530170 if (ret < 0) {
171 dev_err(rdev_get_dev(rdev),
172 "couldn't read 0x%x register\n", info->update_reg);
173 return ret;
174 }
175
Bengt Jonsson09aefa12010-12-10 11:08:46 +0100176 dev_vdbg(rdev_get_dev(rdev),
177 "%s-is_enabled (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
178 " 0x%x\n",
179 info->desc.name, info->update_bank, info->update_reg,
180 info->update_mask, regval);
181
182 if (regval & info->update_mask)
Sundar R IYERc789ca22010-07-13 21:48:56 +0530183 return true;
184 else
185 return false;
186}
187
188static int ab8500_list_voltage(struct regulator_dev *rdev, unsigned selector)
189{
Sundar R IYERc789ca22010-07-13 21:48:56 +0530190 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
191
Bengt Jonssonfc24b422010-12-10 11:08:45 +0100192 if (info == NULL) {
193 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
Sundar R IYERc789ca22010-07-13 21:48:56 +0530194 return -EINVAL;
Bengt Jonssonfc24b422010-12-10 11:08:45 +0100195 }
Sundar R IYERc789ca22010-07-13 21:48:56 +0530196
197 /* return the uV for the fixed regulators */
198 if (info->fixed_uV)
199 return info->fixed_uV;
200
Axel Lin49990e62010-09-04 23:06:41 +0800201 if (selector >= info->voltages_len)
Sundar R IYERc789ca22010-07-13 21:48:56 +0530202 return -EINVAL;
203
Bengt Jonssone1159e62010-12-10 11:08:44 +0100204 return info->voltages[selector];
Sundar R IYERc789ca22010-07-13 21:48:56 +0530205}
206
Axel Lin3bf6e902012-02-24 17:15:45 +0800207static int ab8500_regulator_get_voltage_sel(struct regulator_dev *rdev)
Sundar R IYERc789ca22010-07-13 21:48:56 +0530208{
Bengt Jonsson09aefa12010-12-10 11:08:46 +0100209 int ret, val;
Sundar R IYERc789ca22010-07-13 21:48:56 +0530210 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
Bengt Jonsson09aefa12010-12-10 11:08:46 +0100211 u8 regval;
Sundar R IYERc789ca22010-07-13 21:48:56 +0530212
Bengt Jonssonfc24b422010-12-10 11:08:45 +0100213 if (info == NULL) {
214 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
Sundar R IYERc789ca22010-07-13 21:48:56 +0530215 return -EINVAL;
Bengt Jonssonfc24b422010-12-10 11:08:45 +0100216 }
Sundar R IYERc789ca22010-07-13 21:48:56 +0530217
Bengt Jonsson09aefa12010-12-10 11:08:46 +0100218 ret = abx500_get_register_interruptible(info->dev,
219 info->voltage_bank, info->voltage_reg, &regval);
Sundar R IYERc789ca22010-07-13 21:48:56 +0530220 if (ret < 0) {
221 dev_err(rdev_get_dev(rdev),
222 "couldn't read voltage reg for regulator\n");
223 return ret;
224 }
225
Bengt Jonsson09aefa12010-12-10 11:08:46 +0100226 dev_vdbg(rdev_get_dev(rdev),
227 "%s-get_voltage (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
228 " 0x%x\n",
229 info->desc.name, info->voltage_bank, info->voltage_reg,
230 info->voltage_mask, regval);
231
Sundar R IYERc789ca22010-07-13 21:48:56 +0530232 /* vintcore has a different layout */
Bengt Jonsson09aefa12010-12-10 11:08:46 +0100233 val = regval & info->voltage_mask;
Bengt Jonssonfc24b422010-12-10 11:08:45 +0100234 if (info->desc.id == AB8500_LDO_INTCORE)
Axel Lin3bf6e902012-02-24 17:15:45 +0800235 return val >> 0x3;
Sundar R IYERc789ca22010-07-13 21:48:56 +0530236 else
Axel Lin3bf6e902012-02-24 17:15:45 +0800237 return val;
Sundar R IYERc789ca22010-07-13 21:48:56 +0530238}
239
Axel Linae713d32012-03-20 09:51:08 +0800240static int ab8500_regulator_set_voltage_sel(struct regulator_dev *rdev,
241 unsigned selector)
Sundar R IYERc789ca22010-07-13 21:48:56 +0530242{
Bengt Jonssonfc24b422010-12-10 11:08:45 +0100243 int ret;
Sundar R IYERc789ca22010-07-13 21:48:56 +0530244 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
Bengt Jonsson09aefa12010-12-10 11:08:46 +0100245 u8 regval;
Sundar R IYERc789ca22010-07-13 21:48:56 +0530246
Bengt Jonssonfc24b422010-12-10 11:08:45 +0100247 if (info == NULL) {
248 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
Sundar R IYERc789ca22010-07-13 21:48:56 +0530249 return -EINVAL;
Bengt Jonssonfc24b422010-12-10 11:08:45 +0100250 }
Sundar R IYERc789ca22010-07-13 21:48:56 +0530251
Sundar R IYERc789ca22010-07-13 21:48:56 +0530252 /* set the registers for the request */
Axel Linae713d32012-03-20 09:51:08 +0800253 regval = (u8)selector;
Mattias Wallin47c16972010-09-10 17:47:56 +0200254 ret = abx500_mask_and_set_register_interruptible(info->dev,
Bengt Jonsson09aefa12010-12-10 11:08:46 +0100255 info->voltage_bank, info->voltage_reg,
256 info->voltage_mask, regval);
Sundar R IYERc789ca22010-07-13 21:48:56 +0530257 if (ret < 0)
258 dev_err(rdev_get_dev(rdev),
259 "couldn't set voltage reg for regulator\n");
260
Bengt Jonsson09aefa12010-12-10 11:08:46 +0100261 dev_vdbg(rdev_get_dev(rdev),
262 "%s-set_voltage (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
263 " 0x%x\n",
264 info->desc.name, info->voltage_bank, info->voltage_reg,
265 info->voltage_mask, regval);
266
Sundar R IYERc789ca22010-07-13 21:48:56 +0530267 return ret;
268}
269
Linus Walleij42ab6162011-03-17 13:25:02 +0100270static int ab8500_regulator_enable_time(struct regulator_dev *rdev)
271{
272 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
273
274 return info->delay;
275}
276
277static int ab8500_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
278 unsigned int old_sel,
279 unsigned int new_sel)
280{
281 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
282 int ret;
283
284 /* If the regulator isn't on, it won't take time here */
285 ret = ab8500_regulator_is_enabled(rdev);
286 if (ret < 0)
287 return ret;
288 if (!ret)
289 return 0;
290 return info->delay;
291}
292
Sundar R IYERc789ca22010-07-13 21:48:56 +0530293static struct regulator_ops ab8500_regulator_ops = {
294 .enable = ab8500_regulator_enable,
295 .disable = ab8500_regulator_disable,
296 .is_enabled = ab8500_regulator_is_enabled,
Axel Lin3bf6e902012-02-24 17:15:45 +0800297 .get_voltage_sel = ab8500_regulator_get_voltage_sel,
Axel Linae713d32012-03-20 09:51:08 +0800298 .set_voltage_sel = ab8500_regulator_set_voltage_sel,
Sundar R IYERc789ca22010-07-13 21:48:56 +0530299 .list_voltage = ab8500_list_voltage,
Linus Walleij42ab6162011-03-17 13:25:02 +0100300 .enable_time = ab8500_regulator_enable_time,
301 .set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel,
Sundar R IYERc789ca22010-07-13 21:48:56 +0530302};
303
304static int ab8500_fixed_get_voltage(struct regulator_dev *rdev)
305{
Sundar R IYERc789ca22010-07-13 21:48:56 +0530306 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
307
Bengt Jonssonfc24b422010-12-10 11:08:45 +0100308 if (info == NULL) {
309 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
Sundar R IYERc789ca22010-07-13 21:48:56 +0530310 return -EINVAL;
Bengt Jonssonfc24b422010-12-10 11:08:45 +0100311 }
Sundar R IYERc789ca22010-07-13 21:48:56 +0530312
313 return info->fixed_uV;
314}
315
Bengt Jonsson6909b452010-12-10 11:08:47 +0100316static struct regulator_ops ab8500_regulator_fixed_ops = {
Sundar R IYERc789ca22010-07-13 21:48:56 +0530317 .enable = ab8500_regulator_enable,
318 .disable = ab8500_regulator_disable,
319 .is_enabled = ab8500_regulator_is_enabled,
320 .get_voltage = ab8500_fixed_get_voltage,
321 .list_voltage = ab8500_list_voltage,
Linus Walleij42ab6162011-03-17 13:25:02 +0100322 .enable_time = ab8500_regulator_enable_time,
323 .set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel,
Sundar R IYERc789ca22010-07-13 21:48:56 +0530324};
325
Bengt Jonsson6909b452010-12-10 11:08:47 +0100326static struct ab8500_regulator_info
327 ab8500_regulator_info[AB8500_NUM_REGULATORS] = {
Sundar R IYERc789ca22010-07-13 21:48:56 +0530328 /*
Bengt Jonssone1159e62010-12-10 11:08:44 +0100329 * Variable Voltage Regulators
330 * name, min mV, max mV,
331 * update bank, reg, mask, enable val
332 * volt bank, reg, mask, table, table length
Sundar R IYERc789ca22010-07-13 21:48:56 +0530333 */
Bengt Jonsson6909b452010-12-10 11:08:47 +0100334 [AB8500_LDO_AUX1] = {
335 .desc = {
336 .name = "LDO-AUX1",
337 .ops = &ab8500_regulator_ops,
338 .type = REGULATOR_VOLTAGE,
339 .id = AB8500_LDO_AUX1,
340 .owner = THIS_MODULE,
341 .n_voltages = ARRAY_SIZE(ldo_vauxn_voltages),
342 },
343 .min_uV = 1100000,
344 .max_uV = 3300000,
345 .update_bank = 0x04,
346 .update_reg = 0x09,
347 .update_mask = 0x03,
348 .update_val_enable = 0x01,
349 .voltage_bank = 0x04,
350 .voltage_reg = 0x1f,
351 .voltage_mask = 0x0f,
352 .voltages = ldo_vauxn_voltages,
353 .voltages_len = ARRAY_SIZE(ldo_vauxn_voltages),
354 },
355 [AB8500_LDO_AUX2] = {
356 .desc = {
357 .name = "LDO-AUX2",
358 .ops = &ab8500_regulator_ops,
359 .type = REGULATOR_VOLTAGE,
360 .id = AB8500_LDO_AUX2,
361 .owner = THIS_MODULE,
362 .n_voltages = ARRAY_SIZE(ldo_vauxn_voltages),
363 },
364 .min_uV = 1100000,
365 .max_uV = 3300000,
366 .update_bank = 0x04,
367 .update_reg = 0x09,
368 .update_mask = 0x0c,
369 .update_val_enable = 0x04,
370 .voltage_bank = 0x04,
371 .voltage_reg = 0x20,
372 .voltage_mask = 0x0f,
373 .voltages = ldo_vauxn_voltages,
374 .voltages_len = ARRAY_SIZE(ldo_vauxn_voltages),
375 },
376 [AB8500_LDO_AUX3] = {
377 .desc = {
378 .name = "LDO-AUX3",
379 .ops = &ab8500_regulator_ops,
380 .type = REGULATOR_VOLTAGE,
381 .id = AB8500_LDO_AUX3,
382 .owner = THIS_MODULE,
383 .n_voltages = ARRAY_SIZE(ldo_vaux3_voltages),
384 },
385 .min_uV = 1100000,
386 .max_uV = 3300000,
387 .update_bank = 0x04,
388 .update_reg = 0x0a,
389 .update_mask = 0x03,
390 .update_val_enable = 0x01,
391 .voltage_bank = 0x04,
392 .voltage_reg = 0x21,
393 .voltage_mask = 0x07,
394 .voltages = ldo_vaux3_voltages,
395 .voltages_len = ARRAY_SIZE(ldo_vaux3_voltages),
396 },
397 [AB8500_LDO_INTCORE] = {
398 .desc = {
399 .name = "LDO-INTCORE",
400 .ops = &ab8500_regulator_ops,
401 .type = REGULATOR_VOLTAGE,
402 .id = AB8500_LDO_INTCORE,
403 .owner = THIS_MODULE,
404 .n_voltages = ARRAY_SIZE(ldo_vintcore_voltages),
405 },
406 .min_uV = 1100000,
407 .max_uV = 3300000,
408 .update_bank = 0x03,
409 .update_reg = 0x80,
410 .update_mask = 0x44,
411 .update_val_enable = 0x04,
412 .voltage_bank = 0x03,
413 .voltage_reg = 0x80,
414 .voltage_mask = 0x38,
415 .voltages = ldo_vintcore_voltages,
416 .voltages_len = ARRAY_SIZE(ldo_vintcore_voltages),
417 },
Sundar R IYERc789ca22010-07-13 21:48:56 +0530418
419 /*
Bengt Jonssone1159e62010-12-10 11:08:44 +0100420 * Fixed Voltage Regulators
421 * name, fixed mV,
422 * update bank, reg, mask, enable val
Sundar R IYERc789ca22010-07-13 21:48:56 +0530423 */
Bengt Jonsson6909b452010-12-10 11:08:47 +0100424 [AB8500_LDO_TVOUT] = {
425 .desc = {
426 .name = "LDO-TVOUT",
427 .ops = &ab8500_regulator_fixed_ops,
428 .type = REGULATOR_VOLTAGE,
429 .id = AB8500_LDO_TVOUT,
430 .owner = THIS_MODULE,
431 .n_voltages = 1,
432 },
Linus Walleij42ab6162011-03-17 13:25:02 +0100433 .delay = 10000,
Bengt Jonsson6909b452010-12-10 11:08:47 +0100434 .fixed_uV = 2000000,
435 .update_bank = 0x03,
436 .update_reg = 0x80,
437 .update_mask = 0x82,
438 .update_val_enable = 0x02,
439 },
Bengt Jonssonea05ef32011-03-10 14:43:31 +0100440 [AB8500_LDO_USB] = {
441 .desc = {
442 .name = "LDO-USB",
443 .ops = &ab8500_regulator_fixed_ops,
444 .type = REGULATOR_VOLTAGE,
445 .id = AB8500_LDO_USB,
446 .owner = THIS_MODULE,
447 .n_voltages = 1,
448 },
449 .fixed_uV = 3300000,
450 .update_bank = 0x03,
451 .update_reg = 0x82,
452 .update_mask = 0x03,
453 .update_val_enable = 0x01,
454 },
Bengt Jonsson6909b452010-12-10 11:08:47 +0100455 [AB8500_LDO_AUDIO] = {
456 .desc = {
457 .name = "LDO-AUDIO",
458 .ops = &ab8500_regulator_fixed_ops,
459 .type = REGULATOR_VOLTAGE,
460 .id = AB8500_LDO_AUDIO,
461 .owner = THIS_MODULE,
462 .n_voltages = 1,
463 },
464 .fixed_uV = 2000000,
465 .update_bank = 0x03,
466 .update_reg = 0x83,
467 .update_mask = 0x02,
468 .update_val_enable = 0x02,
469 },
470 [AB8500_LDO_ANAMIC1] = {
471 .desc = {
472 .name = "LDO-ANAMIC1",
473 .ops = &ab8500_regulator_fixed_ops,
474 .type = REGULATOR_VOLTAGE,
475 .id = AB8500_LDO_ANAMIC1,
476 .owner = THIS_MODULE,
477 .n_voltages = 1,
478 },
479 .fixed_uV = 2050000,
480 .update_bank = 0x03,
481 .update_reg = 0x83,
482 .update_mask = 0x08,
483 .update_val_enable = 0x08,
484 },
485 [AB8500_LDO_ANAMIC2] = {
486 .desc = {
487 .name = "LDO-ANAMIC2",
488 .ops = &ab8500_regulator_fixed_ops,
489 .type = REGULATOR_VOLTAGE,
490 .id = AB8500_LDO_ANAMIC2,
491 .owner = THIS_MODULE,
492 .n_voltages = 1,
493 },
494 .fixed_uV = 2050000,
495 .update_bank = 0x03,
496 .update_reg = 0x83,
497 .update_mask = 0x10,
498 .update_val_enable = 0x10,
499 },
500 [AB8500_LDO_DMIC] = {
501 .desc = {
502 .name = "LDO-DMIC",
503 .ops = &ab8500_regulator_fixed_ops,
504 .type = REGULATOR_VOLTAGE,
505 .id = AB8500_LDO_DMIC,
506 .owner = THIS_MODULE,
507 .n_voltages = 1,
508 },
509 .fixed_uV = 1800000,
510 .update_bank = 0x03,
511 .update_reg = 0x83,
512 .update_mask = 0x04,
513 .update_val_enable = 0x04,
514 },
515 [AB8500_LDO_ANA] = {
516 .desc = {
517 .name = "LDO-ANA",
518 .ops = &ab8500_regulator_fixed_ops,
519 .type = REGULATOR_VOLTAGE,
520 .id = AB8500_LDO_ANA,
521 .owner = THIS_MODULE,
522 .n_voltages = 1,
523 },
524 .fixed_uV = 1200000,
525 .update_bank = 0x04,
526 .update_reg = 0x06,
527 .update_mask = 0x0c,
528 .update_val_enable = 0x04,
529 },
530
531
Sundar R IYERc789ca22010-07-13 21:48:56 +0530532};
533
Bengt Jonsson79568b942011-03-11 11:54:46 +0100534struct ab8500_reg_init {
535 u8 bank;
536 u8 addr;
537 u8 mask;
538};
539
540#define REG_INIT(_id, _bank, _addr, _mask) \
541 [_id] = { \
542 .bank = _bank, \
543 .addr = _addr, \
544 .mask = _mask, \
545 }
546
547static struct ab8500_reg_init ab8500_reg_init[] = {
548 /*
549 * 0x30, VanaRequestCtrl
550 * 0x0C, VpllRequestCtrl
551 * 0xc0, VextSupply1RequestCtrl
552 */
553 REG_INIT(AB8500_REGUREQUESTCTRL2, 0x03, 0x04, 0xfc),
554 /*
555 * 0x03, VextSupply2RequestCtrl
556 * 0x0c, VextSupply3RequestCtrl
557 * 0x30, Vaux1RequestCtrl
558 * 0xc0, Vaux2RequestCtrl
559 */
560 REG_INIT(AB8500_REGUREQUESTCTRL3, 0x03, 0x05, 0xff),
561 /*
562 * 0x03, Vaux3RequestCtrl
563 * 0x04, SwHPReq
564 */
565 REG_INIT(AB8500_REGUREQUESTCTRL4, 0x03, 0x06, 0x07),
566 /*
567 * 0x08, VanaSysClkReq1HPValid
568 * 0x20, Vaux1SysClkReq1HPValid
569 * 0x40, Vaux2SysClkReq1HPValid
570 * 0x80, Vaux3SysClkReq1HPValid
571 */
572 REG_INIT(AB8500_REGUSYSCLKREQ1HPVALID1, 0x03, 0x07, 0xe8),
573 /*
574 * 0x10, VextSupply1SysClkReq1HPValid
575 * 0x20, VextSupply2SysClkReq1HPValid
576 * 0x40, VextSupply3SysClkReq1HPValid
577 */
578 REG_INIT(AB8500_REGUSYSCLKREQ1HPVALID2, 0x03, 0x08, 0x70),
579 /*
580 * 0x08, VanaHwHPReq1Valid
581 * 0x20, Vaux1HwHPReq1Valid
582 * 0x40, Vaux2HwHPReq1Valid
583 * 0x80, Vaux3HwHPReq1Valid
584 */
585 REG_INIT(AB8500_REGUHWHPREQ1VALID1, 0x03, 0x09, 0xe8),
586 /*
587 * 0x01, VextSupply1HwHPReq1Valid
588 * 0x02, VextSupply2HwHPReq1Valid
589 * 0x04, VextSupply3HwHPReq1Valid
590 */
591 REG_INIT(AB8500_REGUHWHPREQ1VALID2, 0x03, 0x0a, 0x07),
592 /*
593 * 0x08, VanaHwHPReq2Valid
594 * 0x20, Vaux1HwHPReq2Valid
595 * 0x40, Vaux2HwHPReq2Valid
596 * 0x80, Vaux3HwHPReq2Valid
597 */
598 REG_INIT(AB8500_REGUHWHPREQ2VALID1, 0x03, 0x0b, 0xe8),
599 /*
600 * 0x01, VextSupply1HwHPReq2Valid
601 * 0x02, VextSupply2HwHPReq2Valid
602 * 0x04, VextSupply3HwHPReq2Valid
603 */
604 REG_INIT(AB8500_REGUHWHPREQ2VALID2, 0x03, 0x0c, 0x07),
605 /*
606 * 0x20, VanaSwHPReqValid
607 * 0x80, Vaux1SwHPReqValid
608 */
609 REG_INIT(AB8500_REGUSWHPREQVALID1, 0x03, 0x0d, 0xa0),
610 /*
611 * 0x01, Vaux2SwHPReqValid
612 * 0x02, Vaux3SwHPReqValid
613 * 0x04, VextSupply1SwHPReqValid
614 * 0x08, VextSupply2SwHPReqValid
615 * 0x10, VextSupply3SwHPReqValid
616 */
617 REG_INIT(AB8500_REGUSWHPREQVALID2, 0x03, 0x0e, 0x1f),
618 /*
619 * 0x02, SysClkReq2Valid1
620 * ...
621 * 0x80, SysClkReq8Valid1
622 */
623 REG_INIT(AB8500_REGUSYSCLKREQVALID1, 0x03, 0x0f, 0xfe),
624 /*
625 * 0x02, SysClkReq2Valid2
626 * ...
627 * 0x80, SysClkReq8Valid2
628 */
629 REG_INIT(AB8500_REGUSYSCLKREQVALID2, 0x03, 0x10, 0xfe),
630 /*
631 * 0x02, VTVoutEna
632 * 0x04, Vintcore12Ena
633 * 0x38, Vintcore12Sel
634 * 0x40, Vintcore12LP
635 * 0x80, VTVoutLP
636 */
637 REG_INIT(AB8500_REGUMISC1, 0x03, 0x80, 0xfe),
638 /*
639 * 0x02, VaudioEna
640 * 0x04, VdmicEna
641 * 0x08, Vamic1Ena
642 * 0x10, Vamic2Ena
643 */
644 REG_INIT(AB8500_VAUDIOSUPPLY, 0x03, 0x83, 0x1e),
645 /*
646 * 0x01, Vamic1_dzout
647 * 0x02, Vamic2_dzout
648 */
649 REG_INIT(AB8500_REGUCTRL1VAMIC, 0x03, 0x84, 0x03),
650 /*
651 * 0x0c, VanaRegu
652 * 0x03, VpllRegu
653 */
654 REG_INIT(AB8500_VPLLVANAREGU, 0x04, 0x06, 0x0f),
655 /*
656 * 0x01, VrefDDREna
657 * 0x02, VrefDDRSleepMode
658 */
659 REG_INIT(AB8500_VREFDDR, 0x04, 0x07, 0x03),
660 /*
661 * 0x03, VextSupply1Regu
662 * 0x0c, VextSupply2Regu
663 * 0x30, VextSupply3Regu
664 * 0x40, ExtSupply2Bypass
665 * 0x80, ExtSupply3Bypass
666 */
667 REG_INIT(AB8500_EXTSUPPLYREGU, 0x04, 0x08, 0xff),
668 /*
669 * 0x03, Vaux1Regu
670 * 0x0c, Vaux2Regu
671 */
672 REG_INIT(AB8500_VAUX12REGU, 0x04, 0x09, 0x0f),
673 /*
674 * 0x03, Vaux3Regu
675 */
676 REG_INIT(AB8500_VRF1VAUX3REGU, 0x04, 0x0a, 0x03),
677 /*
678 * 0x3f, Vsmps1Sel1
679 */
680 REG_INIT(AB8500_VSMPS1SEL1, 0x04, 0x13, 0x3f),
681 /*
682 * 0x0f, Vaux1Sel
683 */
684 REG_INIT(AB8500_VAUX1SEL, 0x04, 0x1f, 0x0f),
685 /*
686 * 0x0f, Vaux2Sel
687 */
688 REG_INIT(AB8500_VAUX2SEL, 0x04, 0x20, 0x0f),
689 /*
690 * 0x07, Vaux3Sel
691 */
692 REG_INIT(AB8500_VRF1VAUX3SEL, 0x04, 0x21, 0x07),
693 /*
694 * 0x01, VextSupply12LP
695 */
696 REG_INIT(AB8500_REGUCTRL2SPARE, 0x04, 0x22, 0x01),
697 /*
698 * 0x04, Vaux1Disch
699 * 0x08, Vaux2Disch
700 * 0x10, Vaux3Disch
701 * 0x20, Vintcore12Disch
702 * 0x40, VTVoutDisch
703 * 0x80, VaudioDisch
704 */
705 REG_INIT(AB8500_REGUCTRLDISCH, 0x04, 0x43, 0xfc),
706 /*
707 * 0x02, VanaDisch
708 * 0x04, VdmicPullDownEna
709 * 0x10, VdmicDisch
710 */
711 REG_INIT(AB8500_REGUCTRLDISCH2, 0x04, 0x44, 0x16),
712};
713
Lee Jonesa7ac1d92012-05-17 14:45:14 +0100714static __devinit int
715ab8500_regulator_init_registers(struct platform_device *pdev, int id, int value)
716{
717 int err;
718
719 if (value & ~ab8500_reg_init[id].mask) {
720 dev_err(&pdev->dev,
721 "Configuration error: value outside mask.\n");
722 return -EINVAL;
723 }
724
725 err = abx500_mask_and_set_register_interruptible(
726 &pdev->dev,
727 ab8500_reg_init[id].bank,
728 ab8500_reg_init[id].addr,
729 ab8500_reg_init[id].mask,
730 value);
731 if (err < 0) {
732 dev_err(&pdev->dev,
733 "Failed to initialize 0x%02x, 0x%02x.\n",
734 ab8500_reg_init[id].bank,
735 ab8500_reg_init[id].addr);
736 return err;
737 }
738
739 dev_vdbg(&pdev->dev,
740 "init: 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
741 ab8500_reg_init[id].bank,
742 ab8500_reg_init[id].addr,
743 ab8500_reg_init[id].mask,
744 value);
745
746 return 0;
747}
748
749static __devinit int ab8500_regulator_register(struct platform_device *pdev,
750 struct regulator_init_data *init_data,
751 int id,
752 struct device_node *np)
753{
754 struct ab8500_regulator_info *info = NULL;
755 struct regulator_config config = { };
756 int err;
757
758 /* assign per-regulator data */
759 info = &ab8500_regulator_info[id];
760 info->dev = &pdev->dev;
761
762 config.dev = &pdev->dev;
763 config.init_data = init_data;
764 config.driver_data = info;
765 config.of_node = np;
766
767 /* fix for hardware before ab8500v2.0 */
768 if (abx500_get_chip_id(info->dev) < 0x20) {
769 if (info->desc.id == AB8500_LDO_AUX3) {
770 info->desc.n_voltages =
771 ARRAY_SIZE(ldo_vauxn_voltages);
772 info->voltages = ldo_vauxn_voltages;
773 info->voltages_len =
774 ARRAY_SIZE(ldo_vauxn_voltages);
775 info->voltage_mask = 0xf;
776 }
777 }
778
779 /* register regulator with framework */
780 info->regulator = regulator_register(&info->desc, &config);
781 if (IS_ERR(info->regulator)) {
782 err = PTR_ERR(info->regulator);
783 dev_err(&pdev->dev, "failed to register regulator %s\n",
784 info->desc.name);
785 /* when we fail, un-register all earlier regulators */
786 while (--id >= 0) {
787 info = &ab8500_regulator_info[id];
788 regulator_unregister(info->regulator);
789 }
790 return err;
791 }
792
793 return 0;
794}
795
Lee Jones3a8334b2012-05-17 14:45:16 +0100796static struct of_regulator_match ab8500_regulator_matches[] = {
797 { .name = "LDO-AUX1", .driver_data = (void *) AB8500_LDO_AUX1, },
798 { .name = "LDO-AUX2", .driver_data = (void *) AB8500_LDO_AUX2, },
799 { .name = "LDO-AUX3", .driver_data = (void *) AB8500_LDO_AUX3, },
800 { .name = "LDO-INTCORE", .driver_data = (void *) AB8500_LDO_INTCORE, },
801 { .name = "LDO-TVOUT", .driver_data = (void *) AB8500_LDO_TVOUT, },
802 { .name = "LDO-USB", .driver_data = (void *) AB8500_LDO_USB, },
803 { .name = "LDO-AUDIO", .driver_data = (void *) AB8500_LDO_AUDIO, },
804 { .name = "LDO-ANAMIC1", .driver_data = (void *) AB8500_LDO_ANAMIC1, },
805 { .name = "LDO-ANAMIC2", .driver_data = (void *) AB8500_LDO_ANAMIC2, },
806 { .name = "LDO-DMIC", .driver_data = (void *) AB8500_LDO_DMIC, },
807 { .name = "LDO-ANA", .driver_data = (void *) AB8500_LDO_ANA, },
808};
809
810static __devinit int
811ab8500_regulator_of_probe(struct platform_device *pdev, struct device_node *np)
812{
813 int err, i;
814
815 for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
816 err = ab8500_regulator_register(
817 pdev, ab8500_regulator_matches[i].init_data,
818 i, ab8500_regulator_matches[i].of_node);
819 if (err)
820 return err;
821 }
822
823 return 0;
824}
825
Sundar R IYERc789ca22010-07-13 21:48:56 +0530826static __devinit int ab8500_regulator_probe(struct platform_device *pdev)
827{
828 struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
Dan Carpenteraf54dec2010-08-14 11:03:16 +0200829 struct ab8500_platform_data *pdata;
Lee Jones3a8334b2012-05-17 14:45:16 +0100830 struct device_node *np = pdev->dev.of_node;
Sundar R IYERc789ca22010-07-13 21:48:56 +0530831 int i, err;
832
Lee Jones3a8334b2012-05-17 14:45:16 +0100833 if (np) {
834 err = of_regulator_match(&pdev->dev, np,
835 ab8500_regulator_matches,
836 ARRAY_SIZE(ab8500_regulator_matches));
837 if (err < 0) {
838 dev_err(&pdev->dev,
839 "Error parsing regulator init data: %d\n", err);
840 return err;
841 }
842
843 err = ab8500_regulator_of_probe(pdev, np);
844 return err;
845 }
846
Sundar R IYERc789ca22010-07-13 21:48:56 +0530847 if (!ab8500) {
848 dev_err(&pdev->dev, "null mfd parent\n");
849 return -EINVAL;
850 }
Dan Carpenteraf54dec2010-08-14 11:03:16 +0200851 pdata = dev_get_platdata(ab8500->dev);
Bengt Jonssonfc24b422010-12-10 11:08:45 +0100852 if (!pdata) {
853 dev_err(&pdev->dev, "null pdata\n");
854 return -EINVAL;
855 }
Sundar R IYERc789ca22010-07-13 21:48:56 +0530856
Bengt Jonssoncb189b02010-12-10 11:08:40 +0100857 /* make sure the platform data has the correct size */
858 if (pdata->num_regulator != ARRAY_SIZE(ab8500_regulator_info)) {
Bengt Jonsson79568b942011-03-11 11:54:46 +0100859 dev_err(&pdev->dev, "Configuration error: size mismatch.\n");
Bengt Jonssoncb189b02010-12-10 11:08:40 +0100860 return -EINVAL;
861 }
862
Bengt Jonsson79568b942011-03-11 11:54:46 +0100863 /* initialize registers */
864 for (i = 0; i < pdata->num_regulator_reg_init; i++) {
Lee Jonesa7ac1d92012-05-17 14:45:14 +0100865 int id, value;
Bengt Jonsson79568b942011-03-11 11:54:46 +0100866
867 id = pdata->regulator_reg_init[i].id;
868 value = pdata->regulator_reg_init[i].value;
869
870 /* check for configuration errors */
871 if (id >= AB8500_NUM_REGULATOR_REGISTERS) {
872 dev_err(&pdev->dev,
873 "Configuration error: id outside range.\n");
874 return -EINVAL;
875 }
Bengt Jonsson79568b942011-03-11 11:54:46 +0100876
Lee Jonesa7ac1d92012-05-17 14:45:14 +0100877 err = ab8500_regulator_init_registers(pdev, id, value);
878 if (err < 0)
Bengt Jonsson79568b942011-03-11 11:54:46 +0100879 return err;
Bengt Jonsson79568b942011-03-11 11:54:46 +0100880 }
881
Sundar R IYERc789ca22010-07-13 21:48:56 +0530882 /* register all regulators */
883 for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
Lee Jonesa7ac1d92012-05-17 14:45:14 +0100884 err = ab8500_regulator_register(pdev, &pdata->regulator[i], i, NULL);
885 if (err < 0)
Sundar R IYERc789ca22010-07-13 21:48:56 +0530886 return err;
Sundar R IYERc789ca22010-07-13 21:48:56 +0530887 }
888
889 return 0;
890}
891
892static __devexit int ab8500_regulator_remove(struct platform_device *pdev)
893{
894 int i;
895
896 for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
897 struct ab8500_regulator_info *info = NULL;
898 info = &ab8500_regulator_info[i];
Bengt Jonsson09aefa12010-12-10 11:08:46 +0100899
900 dev_vdbg(rdev_get_dev(info->regulator),
901 "%s-remove\n", info->desc.name);
902
Sundar R IYERc789ca22010-07-13 21:48:56 +0530903 regulator_unregister(info->regulator);
904 }
905
906 return 0;
907}
908
Lee Jones3a8334b2012-05-17 14:45:16 +0100909static const struct of_device_id ab8500_regulator_match[] = {
910 { .compatible = "stericsson,ab8500-regulator", },
911 {}
912};
913
Sundar R IYERc789ca22010-07-13 21:48:56 +0530914static struct platform_driver ab8500_regulator_driver = {
915 .probe = ab8500_regulator_probe,
916 .remove = __devexit_p(ab8500_regulator_remove),
917 .driver = {
918 .name = "ab8500-regulator",
919 .owner = THIS_MODULE,
Lee Jones3a8334b2012-05-17 14:45:16 +0100920 .of_match_table = ab8500_regulator_match,
Sundar R IYERc789ca22010-07-13 21:48:56 +0530921 },
922};
923
924static int __init ab8500_regulator_init(void)
925{
926 int ret;
927
928 ret = platform_driver_register(&ab8500_regulator_driver);
929 if (ret != 0)
930 pr_err("Failed to register ab8500 regulator: %d\n", ret);
931
932 return ret;
933}
934subsys_initcall(ab8500_regulator_init);
935
936static void __exit ab8500_regulator_exit(void)
937{
938 platform_driver_unregister(&ab8500_regulator_driver);
939}
940module_exit(ab8500_regulator_exit);
941
942MODULE_LICENSE("GPL v2");
943MODULE_AUTHOR("Sundar Iyer <sundar.iyer@stericsson.com>");
944MODULE_DESCRIPTION("Regulator Driver for ST-Ericsson AB8500 Mixed-Sig PMIC");
945MODULE_ALIAS("platform:ab8500-regulator");