blob: 5d1fd6f3d10ad9ac70f9a2bcb4b6824db086c297 [file] [log] [blame]
Matt Porter462c9fc2014-03-11 11:46:13 -04001/*
2 * Broadcom BCM590xx regulator driver
3 *
4 * Copyright 2014 Linaro Limited
5 * Author: Matt Porter <mporter@linaro.org>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
11 */
12
13#include <linux/err.h>
14#include <linux/init.h>
15#include <linux/kernel.h>
16#include <linux/mfd/bcm590xx.h>
17#include <linux/module.h>
18#include <linux/of.h>
19#include <linux/platform_device.h>
20#include <linux/regulator/driver.h>
21#include <linux/regulator/machine.h>
22#include <linux/regulator/of_regulator.h>
23#include <linux/slab.h>
24
Matt Porterc6466952014-04-23 19:21:32 -040025/* I2C slave 0 registers */
Matt Porter462c9fc2014-03-11 11:46:13 -040026#define BCM590XX_RFLDOPMCTRL1 0x60
27#define BCM590XX_IOSR1PMCTRL1 0x7a
28#define BCM590XX_IOSR2PMCTRL1 0x7c
29#define BCM590XX_CSRPMCTRL1 0x7e
30#define BCM590XX_SDSR1PMCTRL1 0x82
31#define BCM590XX_SDSR2PMCTRL1 0x86
32#define BCM590XX_MSRPMCTRL1 0x8a
33#define BCM590XX_VSRPMCTRL1 0x8e
Matt Porter462c9fc2014-03-11 11:46:13 -040034#define BCM590XX_RFLDOCTRL 0x96
35#define BCM590XX_CSRVOUT1 0xc0
Matt Porterc6466952014-04-23 19:21:32 -040036
37/* I2C slave 1 registers */
38#define BCM590XX_GPLDO5PMCTRL1 0x16
39#define BCM590XX_GPLDO6PMCTRL1 0x18
40#define BCM590XX_GPLDO1CTRL 0x1a
41#define BCM590XX_GPLDO2CTRL 0x1b
42#define BCM590XX_GPLDO3CTRL 0x1c
43#define BCM590XX_GPLDO4CTRL 0x1d
44#define BCM590XX_GPLDO5CTRL 0x1e
45#define BCM590XX_GPLDO6CTRL 0x1f
46#define BCM590XX_OTG_CTRL 0x40
47#define BCM590XX_GPLDO1PMCTRL1 0x57
48#define BCM590XX_GPLDO2PMCTRL1 0x59
49#define BCM590XX_GPLDO3PMCTRL1 0x5b
50#define BCM590XX_GPLDO4PMCTRL1 0x5d
51
52#define BCM590XX_REG_ENABLE BIT(7)
53#define BCM590XX_VBUS_ENABLE BIT(2)
Matt Porter462c9fc2014-03-11 11:46:13 -040054#define BCM590XX_LDO_VSEL_MASK GENMASK(5, 3)
55#define BCM590XX_SR_VSEL_MASK GENMASK(5, 0)
56
Matt Porterc6466952014-04-23 19:21:32 -040057/*
58 * RFLDO to VSR regulators are
59 * accessed via I2C slave 0
60 */
61
Matt Porter462c9fc2014-03-11 11:46:13 -040062/* LDO regulator IDs */
63#define BCM590XX_REG_RFLDO 0
64#define BCM590XX_REG_CAMLDO1 1
65#define BCM590XX_REG_CAMLDO2 2
66#define BCM590XX_REG_SIMLDO1 3
67#define BCM590XX_REG_SIMLDO2 4
68#define BCM590XX_REG_SDLDO 5
69#define BCM590XX_REG_SDXLDO 6
70#define BCM590XX_REG_MMCLDO1 7
71#define BCM590XX_REG_MMCLDO2 8
72#define BCM590XX_REG_AUDLDO 9
73#define BCM590XX_REG_MICLDO 10
74#define BCM590XX_REG_USBLDO 11
75#define BCM590XX_REG_VIBLDO 12
76
77/* DCDC regulator IDs */
78#define BCM590XX_REG_CSR 13
79#define BCM590XX_REG_IOSR1 14
80#define BCM590XX_REG_IOSR2 15
81#define BCM590XX_REG_MSR 16
82#define BCM590XX_REG_SDSR1 17
83#define BCM590XX_REG_SDSR2 18
84#define BCM590XX_REG_VSR 19
85
Matt Porterc6466952014-04-23 19:21:32 -040086/*
87 * GPLDO1 to VBUS regulators are
88 * accessed via I2C slave 1
89 */
90
91#define BCM590XX_REG_GPLDO1 20
92#define BCM590XX_REG_GPLDO2 21
93#define BCM590XX_REG_GPLDO3 22
94#define BCM590XX_REG_GPLDO4 23
95#define BCM590XX_REG_GPLDO5 24
96#define BCM590XX_REG_GPLDO6 25
97#define BCM590XX_REG_VBUS 26
98
99#define BCM590XX_NUM_REGS 27
Matt Porter462c9fc2014-03-11 11:46:13 -0400100
101#define BCM590XX_REG_IS_LDO(n) (n < BCM590XX_REG_CSR)
Matt Porterc6466952014-04-23 19:21:32 -0400102#define BCM590XX_REG_IS_GPLDO(n) \
103 ((n > BCM590XX_REG_VSR) && (n < BCM590XX_REG_VBUS))
104#define BCM590XX_REG_IS_VBUS(n) (n == BCM590XX_REG_VBUS)
Matt Porter462c9fc2014-03-11 11:46:13 -0400105
106struct bcm590xx_board {
107 struct regulator_init_data *bcm590xx_pmu_init_data[BCM590XX_NUM_REGS];
108};
109
110/* LDO group A: supported voltages in microvolts */
111static const unsigned int ldo_a_table[] = {
112 1200000, 1800000, 2500000, 2700000, 2800000,
113 2900000, 3000000, 3300000,
114};
115
116/* LDO group C: supported voltages in microvolts */
117static const unsigned int ldo_c_table[] = {
118 3100000, 1800000, 2500000, 2700000, 2800000,
119 2900000, 3000000, 3300000,
120};
121
Graham Williams636f4a32014-06-18 12:42:10 -0700122static const unsigned int ldo_vbus[] = {
123 5000000,
124};
125
Matt Porter462c9fc2014-03-11 11:46:13 -0400126/* DCDC group CSR: supported voltages in microvolts */
127static const struct regulator_linear_range dcdc_csr_ranges[] = {
128 REGULATOR_LINEAR_RANGE(860000, 2, 50, 10000),
129 REGULATOR_LINEAR_RANGE(1360000, 51, 55, 20000),
130 REGULATOR_LINEAR_RANGE(900000, 56, 63, 0),
131};
132
133/* DCDC group IOSR1: supported voltages in microvolts */
134static const struct regulator_linear_range dcdc_iosr1_ranges[] = {
135 REGULATOR_LINEAR_RANGE(860000, 2, 51, 10000),
136 REGULATOR_LINEAR_RANGE(1500000, 52, 52, 0),
137 REGULATOR_LINEAR_RANGE(1800000, 53, 53, 0),
138 REGULATOR_LINEAR_RANGE(900000, 54, 63, 0),
139};
140
141/* DCDC group SDSR1: supported voltages in microvolts */
142static const struct regulator_linear_range dcdc_sdsr1_ranges[] = {
143 REGULATOR_LINEAR_RANGE(860000, 2, 50, 10000),
144 REGULATOR_LINEAR_RANGE(1340000, 51, 51, 0),
145 REGULATOR_LINEAR_RANGE(900000, 52, 63, 0),
146};
147
148struct bcm590xx_info {
149 const char *name;
150 const char *vin_name;
151 u8 n_voltages;
152 const unsigned int *volt_table;
153 u8 n_linear_ranges;
154 const struct regulator_linear_range *linear_ranges;
155};
156
157#define BCM590XX_REG_TABLE(_name, _table) \
158 { \
159 .name = #_name, \
160 .n_voltages = ARRAY_SIZE(_table), \
161 .volt_table = _table, \
162 }
163
164#define BCM590XX_REG_RANGES(_name, _ranges) \
165 { \
166 .name = #_name, \
Tim Kryger1e791402014-04-10 13:04:00 -0700167 .n_voltages = 64, \
Matt Porter462c9fc2014-03-11 11:46:13 -0400168 .n_linear_ranges = ARRAY_SIZE(_ranges), \
169 .linear_ranges = _ranges, \
170 }
171
172static struct bcm590xx_info bcm590xx_regs[] = {
173 BCM590XX_REG_TABLE(rfldo, ldo_a_table),
174 BCM590XX_REG_TABLE(camldo1, ldo_c_table),
175 BCM590XX_REG_TABLE(camldo2, ldo_c_table),
176 BCM590XX_REG_TABLE(simldo1, ldo_a_table),
177 BCM590XX_REG_TABLE(simldo2, ldo_a_table),
178 BCM590XX_REG_TABLE(sdldo, ldo_c_table),
179 BCM590XX_REG_TABLE(sdxldo, ldo_a_table),
180 BCM590XX_REG_TABLE(mmcldo1, ldo_a_table),
181 BCM590XX_REG_TABLE(mmcldo2, ldo_a_table),
182 BCM590XX_REG_TABLE(audldo, ldo_a_table),
183 BCM590XX_REG_TABLE(micldo, ldo_a_table),
184 BCM590XX_REG_TABLE(usbldo, ldo_a_table),
185 BCM590XX_REG_TABLE(vibldo, ldo_c_table),
186 BCM590XX_REG_RANGES(csr, dcdc_csr_ranges),
187 BCM590XX_REG_RANGES(iosr1, dcdc_iosr1_ranges),
188 BCM590XX_REG_RANGES(iosr2, dcdc_iosr1_ranges),
189 BCM590XX_REG_RANGES(msr, dcdc_iosr1_ranges),
190 BCM590XX_REG_RANGES(sdsr1, dcdc_sdsr1_ranges),
191 BCM590XX_REG_RANGES(sdsr2, dcdc_iosr1_ranges),
192 BCM590XX_REG_RANGES(vsr, dcdc_iosr1_ranges),
Matt Porterc6466952014-04-23 19:21:32 -0400193 BCM590XX_REG_TABLE(gpldo1, ldo_a_table),
194 BCM590XX_REG_TABLE(gpldo2, ldo_a_table),
195 BCM590XX_REG_TABLE(gpldo3, ldo_a_table),
196 BCM590XX_REG_TABLE(gpldo4, ldo_a_table),
197 BCM590XX_REG_TABLE(gpldo5, ldo_a_table),
198 BCM590XX_REG_TABLE(gpldo6, ldo_a_table),
Graham Williams636f4a32014-06-18 12:42:10 -0700199 BCM590XX_REG_TABLE(vbus, ldo_vbus),
Matt Porter462c9fc2014-03-11 11:46:13 -0400200};
201
202struct bcm590xx_reg {
203 struct regulator_desc *desc;
204 struct bcm590xx *mfd;
Matt Porter462c9fc2014-03-11 11:46:13 -0400205 struct bcm590xx_info **info;
206};
207
208static int bcm590xx_get_vsel_register(int id)
209{
210 if (BCM590XX_REG_IS_LDO(id))
211 return BCM590XX_RFLDOCTRL + id;
Matt Porterc6466952014-04-23 19:21:32 -0400212 else if (BCM590XX_REG_IS_GPLDO(id))
213 return BCM590XX_GPLDO1CTRL + id;
Matt Porter462c9fc2014-03-11 11:46:13 -0400214 else
215 return BCM590XX_CSRVOUT1 + (id - BCM590XX_REG_CSR) * 3;
216}
217
218static int bcm590xx_get_enable_register(int id)
219{
220 int reg = 0;
221
222 if (BCM590XX_REG_IS_LDO(id))
223 reg = BCM590XX_RFLDOPMCTRL1 + id * 2;
Matt Porterc6466952014-04-23 19:21:32 -0400224 else if (BCM590XX_REG_IS_GPLDO(id))
225 reg = BCM590XX_GPLDO1PMCTRL1 + id * 2;
Matt Porter462c9fc2014-03-11 11:46:13 -0400226 else
227 switch (id) {
228 case BCM590XX_REG_CSR:
229 reg = BCM590XX_CSRPMCTRL1;
230 break;
231 case BCM590XX_REG_IOSR1:
232 reg = BCM590XX_IOSR1PMCTRL1;
233 break;
234 case BCM590XX_REG_IOSR2:
235 reg = BCM590XX_IOSR2PMCTRL1;
236 break;
237 case BCM590XX_REG_MSR:
238 reg = BCM590XX_MSRPMCTRL1;
239 break;
240 case BCM590XX_REG_SDSR1:
241 reg = BCM590XX_SDSR1PMCTRL1;
242 break;
243 case BCM590XX_REG_SDSR2:
244 reg = BCM590XX_SDSR2PMCTRL1;
245 break;
Matt Porterc6466952014-04-23 19:21:32 -0400246 case BCM590XX_REG_VBUS:
247 reg = BCM590XX_OTG_CTRL;
Matt Porter462c9fc2014-03-11 11:46:13 -0400248 };
249
Matt Porterc6466952014-04-23 19:21:32 -0400250
Matt Porter462c9fc2014-03-11 11:46:13 -0400251 return reg;
252}
253
254static struct regulator_ops bcm590xx_ops_ldo = {
255 .is_enabled = regulator_is_enabled_regmap,
256 .enable = regulator_enable_regmap,
257 .disable = regulator_disable_regmap,
258 .get_voltage_sel = regulator_get_voltage_sel_regmap,
259 .set_voltage_sel = regulator_set_voltage_sel_regmap,
260 .list_voltage = regulator_list_voltage_table,
261 .map_voltage = regulator_map_voltage_iterate,
262};
263
264static struct regulator_ops bcm590xx_ops_dcdc = {
265 .is_enabled = regulator_is_enabled_regmap,
266 .enable = regulator_enable_regmap,
267 .disable = regulator_disable_regmap,
268 .get_voltage_sel = regulator_get_voltage_sel_regmap,
269 .set_voltage_sel = regulator_set_voltage_sel_regmap,
270 .list_voltage = regulator_list_voltage_linear_range,
271 .map_voltage = regulator_map_voltage_linear_range,
272};
273
Matt Porterc6466952014-04-23 19:21:32 -0400274static struct regulator_ops bcm590xx_ops_vbus = {
275 .is_enabled = regulator_is_enabled_regmap,
276 .enable = regulator_enable_regmap,
277 .disable = regulator_disable_regmap,
278};
279
Matt Porter462c9fc2014-03-11 11:46:13 -0400280#define BCM590XX_MATCH(_name, _id) \
281 { \
282 .name = #_name, \
283 .driver_data = (void *)&bcm590xx_regs[BCM590XX_REG_##_id], \
284 }
285
286static struct of_regulator_match bcm590xx_matches[] = {
287 BCM590XX_MATCH(rfldo, RFLDO),
288 BCM590XX_MATCH(camldo1, CAMLDO1),
289 BCM590XX_MATCH(camldo2, CAMLDO2),
290 BCM590XX_MATCH(simldo1, SIMLDO1),
291 BCM590XX_MATCH(simldo2, SIMLDO2),
292 BCM590XX_MATCH(sdldo, SDLDO),
293 BCM590XX_MATCH(sdxldo, SDXLDO),
294 BCM590XX_MATCH(mmcldo1, MMCLDO1),
295 BCM590XX_MATCH(mmcldo2, MMCLDO2),
296 BCM590XX_MATCH(audldo, AUDLDO),
297 BCM590XX_MATCH(micldo, MICLDO),
298 BCM590XX_MATCH(usbldo, USBLDO),
299 BCM590XX_MATCH(vibldo, VIBLDO),
300 BCM590XX_MATCH(csr, CSR),
301 BCM590XX_MATCH(iosr1, IOSR1),
302 BCM590XX_MATCH(iosr2, IOSR2),
303 BCM590XX_MATCH(msr, MSR),
304 BCM590XX_MATCH(sdsr1, SDSR1),
305 BCM590XX_MATCH(sdsr2, SDSR2),
306 BCM590XX_MATCH(vsr, VSR),
Matt Porterc6466952014-04-23 19:21:32 -0400307 BCM590XX_MATCH(gpldo1, GPLDO1),
308 BCM590XX_MATCH(gpldo2, GPLDO2),
309 BCM590XX_MATCH(gpldo3, GPLDO3),
310 BCM590XX_MATCH(gpldo4, GPLDO4),
311 BCM590XX_MATCH(gpldo5, GPLDO5),
312 BCM590XX_MATCH(gpldo6, GPLDO6),
313 BCM590XX_MATCH(vbus, VBUS),
Matt Porter462c9fc2014-03-11 11:46:13 -0400314};
315
316static struct bcm590xx_board *bcm590xx_parse_dt_reg_data(
317 struct platform_device *pdev,
318 struct of_regulator_match **bcm590xx_reg_matches)
319{
320 struct bcm590xx_board *data;
321 struct device_node *np = pdev->dev.parent->of_node;
322 struct device_node *regulators;
323 struct of_regulator_match *matches = bcm590xx_matches;
324 int count = ARRAY_SIZE(bcm590xx_matches);
325 int idx = 0;
326 int ret;
327
328 if (!np) {
329 dev_err(&pdev->dev, "of node not found\n");
330 return NULL;
331 }
332
333 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
Jingoo Hanc969faa2014-06-02 15:27:21 +0900334 if (!data)
Matt Porter462c9fc2014-03-11 11:46:13 -0400335 return NULL;
Matt Porter462c9fc2014-03-11 11:46:13 -0400336
337 np = of_node_get(np);
338 regulators = of_get_child_by_name(np, "regulators");
339 if (!regulators) {
340 dev_warn(&pdev->dev, "regulator node not found\n");
341 return NULL;
342 }
343
344 ret = of_regulator_match(&pdev->dev, regulators, matches, count);
345 of_node_put(regulators);
346 if (ret < 0) {
347 dev_err(&pdev->dev, "Error parsing regulator init data: %d\n",
348 ret);
349 return NULL;
350 }
351
352 *bcm590xx_reg_matches = matches;
353
354 for (idx = 0; idx < count; idx++) {
355 if (!matches[idx].init_data || !matches[idx].of_node)
356 continue;
357
358 data->bcm590xx_pmu_init_data[idx] = matches[idx].init_data;
359 }
360
361 return data;
362}
363
364static int bcm590xx_probe(struct platform_device *pdev)
365{
366 struct bcm590xx *bcm590xx = dev_get_drvdata(pdev->dev.parent);
367 struct bcm590xx_board *pmu_data = NULL;
368 struct bcm590xx_reg *pmu;
369 struct regulator_config config = { };
370 struct bcm590xx_info *info;
371 struct regulator_init_data *reg_data;
372 struct regulator_dev *rdev;
373 struct of_regulator_match *bcm590xx_reg_matches = NULL;
374 int i;
375
376 pmu_data = bcm590xx_parse_dt_reg_data(pdev,
377 &bcm590xx_reg_matches);
378
379 pmu = devm_kzalloc(&pdev->dev, sizeof(*pmu), GFP_KERNEL);
Jingoo Hanc969faa2014-06-02 15:27:21 +0900380 if (!pmu)
Matt Porter462c9fc2014-03-11 11:46:13 -0400381 return -ENOMEM;
Matt Porter462c9fc2014-03-11 11:46:13 -0400382
383 pmu->mfd = bcm590xx;
384
385 platform_set_drvdata(pdev, pmu);
386
387 pmu->desc = devm_kzalloc(&pdev->dev, BCM590XX_NUM_REGS *
388 sizeof(struct regulator_desc), GFP_KERNEL);
Jingoo Hanc969faa2014-06-02 15:27:21 +0900389 if (!pmu->desc)
Matt Porter462c9fc2014-03-11 11:46:13 -0400390 return -ENOMEM;
Matt Porter462c9fc2014-03-11 11:46:13 -0400391
392 pmu->info = devm_kzalloc(&pdev->dev, BCM590XX_NUM_REGS *
393 sizeof(struct bcm590xx_info *), GFP_KERNEL);
Jingoo Hanc969faa2014-06-02 15:27:21 +0900394 if (!pmu->info)
Matt Porter462c9fc2014-03-11 11:46:13 -0400395 return -ENOMEM;
Matt Porter462c9fc2014-03-11 11:46:13 -0400396
Matt Porter462c9fc2014-03-11 11:46:13 -0400397 info = bcm590xx_regs;
398
399 for (i = 0; i < BCM590XX_NUM_REGS; i++, info++) {
400 if (pmu_data)
401 reg_data = pmu_data->bcm590xx_pmu_init_data[i];
402 else
403 reg_data = NULL;
404
405 /* Register the regulators */
406 pmu->info[i] = info;
407
408 pmu->desc[i].name = info->name;
409 pmu->desc[i].supply_name = info->vin_name;
410 pmu->desc[i].id = i;
411 pmu->desc[i].volt_table = info->volt_table;
412 pmu->desc[i].n_voltages = info->n_voltages;
413 pmu->desc[i].linear_ranges = info->linear_ranges;
414 pmu->desc[i].n_linear_ranges = info->n_linear_ranges;
415
Matt Porterc6466952014-04-23 19:21:32 -0400416 if ((BCM590XX_REG_IS_LDO(i)) || (BCM590XX_REG_IS_GPLDO(i))) {
Matt Porter462c9fc2014-03-11 11:46:13 -0400417 pmu->desc[i].ops = &bcm590xx_ops_ldo;
418 pmu->desc[i].vsel_mask = BCM590XX_LDO_VSEL_MASK;
Matt Porterc6466952014-04-23 19:21:32 -0400419 } else if (BCM590XX_REG_IS_VBUS(i))
420 pmu->desc[i].ops = &bcm590xx_ops_vbus;
421 else {
Matt Porter462c9fc2014-03-11 11:46:13 -0400422 pmu->desc[i].ops = &bcm590xx_ops_dcdc;
423 pmu->desc[i].vsel_mask = BCM590XX_SR_VSEL_MASK;
424 }
425
Matt Porterc6466952014-04-23 19:21:32 -0400426 if (BCM590XX_REG_IS_VBUS(i))
427 pmu->desc[i].enable_mask = BCM590XX_VBUS_ENABLE;
428 else {
429 pmu->desc[i].vsel_reg = bcm590xx_get_vsel_register(i);
430 pmu->desc[i].enable_is_inverted = true;
431 pmu->desc[i].enable_mask = BCM590XX_REG_ENABLE;
432 }
Matt Porter462c9fc2014-03-11 11:46:13 -0400433 pmu->desc[i].enable_reg = bcm590xx_get_enable_register(i);
434 pmu->desc[i].type = REGULATOR_VOLTAGE;
435 pmu->desc[i].owner = THIS_MODULE;
436
437 config.dev = bcm590xx->dev;
438 config.init_data = reg_data;
439 config.driver_data = pmu;
Matt Porterc6466952014-04-23 19:21:32 -0400440 if (BCM590XX_REG_IS_GPLDO(i) || BCM590XX_REG_IS_VBUS(i))
441 config.regmap = bcm590xx->regmap_sec;
442 else
443 config.regmap = bcm590xx->regmap_pri;
Matt Porter462c9fc2014-03-11 11:46:13 -0400444
445 if (bcm590xx_reg_matches)
446 config.of_node = bcm590xx_reg_matches[i].of_node;
447
448 rdev = devm_regulator_register(&pdev->dev, &pmu->desc[i],
449 &config);
450 if (IS_ERR(rdev)) {
451 dev_err(bcm590xx->dev,
452 "failed to register %s regulator\n",
453 pdev->name);
454 return PTR_ERR(rdev);
455 }
Matt Porter462c9fc2014-03-11 11:46:13 -0400456 }
457
458 return 0;
459}
460
461static struct platform_driver bcm590xx_regulator_driver = {
462 .driver = {
463 .name = "bcm590xx-vregs",
464 .owner = THIS_MODULE,
465 },
466 .probe = bcm590xx_probe,
467};
468module_platform_driver(bcm590xx_regulator_driver);
469
470MODULE_AUTHOR("Matt Porter <mporter@linaro.org>");
471MODULE_DESCRIPTION("BCM590xx voltage regulator driver");
472MODULE_LICENSE("GPL v2");
Axel Linc9347432014-03-14 09:57:54 +0800473MODULE_ALIAS("platform:bcm590xx-vregs");