2 * Broadcom BCM590xx regulator driver
4 * Copyright 2014 Linaro Limited
5 * Author: Matt Porter <mporter@linaro.org>
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.
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>
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>
26 #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
34 #define BCM590XX_REG_ENABLE BIT(7)
36 #define BCM590XX_RFLDOCTRL 0x96
37 #define BCM590XX_CSRVOUT1 0xc0
38 #define BCM590XX_LDO_VSEL_MASK GENMASK(5, 3)
39 #define BCM590XX_SR_VSEL_MASK GENMASK(5, 0)
41 /* LDO regulator IDs */
42 #define BCM590XX_REG_RFLDO 0
43 #define BCM590XX_REG_CAMLDO1 1
44 #define BCM590XX_REG_CAMLDO2 2
45 #define BCM590XX_REG_SIMLDO1 3
46 #define BCM590XX_REG_SIMLDO2 4
47 #define BCM590XX_REG_SDLDO 5
48 #define BCM590XX_REG_SDXLDO 6
49 #define BCM590XX_REG_MMCLDO1 7
50 #define BCM590XX_REG_MMCLDO2 8
51 #define BCM590XX_REG_AUDLDO 9
52 #define BCM590XX_REG_MICLDO 10
53 #define BCM590XX_REG_USBLDO 11
54 #define BCM590XX_REG_VIBLDO 12
56 /* DCDC regulator IDs */
57 #define BCM590XX_REG_CSR 13
58 #define BCM590XX_REG_IOSR1 14
59 #define BCM590XX_REG_IOSR2 15
60 #define BCM590XX_REG_MSR 16
61 #define BCM590XX_REG_SDSR1 17
62 #define BCM590XX_REG_SDSR2 18
63 #define BCM590XX_REG_VSR 19
65 #define BCM590XX_NUM_REGS 20
67 #define BCM590XX_REG_IS_LDO(n) (n < BCM590XX_REG_CSR)
69 struct bcm590xx_board {
70 struct regulator_init_data *bcm590xx_pmu_init_data[BCM590XX_NUM_REGS];
73 /* LDO group A: supported voltages in microvolts */
74 static const unsigned int ldo_a_table[] = {
75 1200000, 1800000, 2500000, 2700000, 2800000,
76 2900000, 3000000, 3300000,
79 /* LDO group C: supported voltages in microvolts */
80 static const unsigned int ldo_c_table[] = {
81 3100000, 1800000, 2500000, 2700000, 2800000,
82 2900000, 3000000, 3300000,
85 /* DCDC group CSR: supported voltages in microvolts */
86 static const struct regulator_linear_range dcdc_csr_ranges[] = {
87 REGULATOR_LINEAR_RANGE(860000, 2, 50, 10000),
88 REGULATOR_LINEAR_RANGE(1360000, 51, 55, 20000),
89 REGULATOR_LINEAR_RANGE(900000, 56, 63, 0),
92 /* DCDC group IOSR1: supported voltages in microvolts */
93 static const struct regulator_linear_range dcdc_iosr1_ranges[] = {
94 REGULATOR_LINEAR_RANGE(860000, 2, 51, 10000),
95 REGULATOR_LINEAR_RANGE(1500000, 52, 52, 0),
96 REGULATOR_LINEAR_RANGE(1800000, 53, 53, 0),
97 REGULATOR_LINEAR_RANGE(900000, 54, 63, 0),
100 /* DCDC group SDSR1: supported voltages in microvolts */
101 static const struct regulator_linear_range dcdc_sdsr1_ranges[] = {
102 REGULATOR_LINEAR_RANGE(860000, 2, 50, 10000),
103 REGULATOR_LINEAR_RANGE(1340000, 51, 51, 0),
104 REGULATOR_LINEAR_RANGE(900000, 52, 63, 0),
107 struct bcm590xx_info {
109 const char *vin_name;
111 const unsigned int *volt_table;
113 const struct regulator_linear_range *linear_ranges;
116 #define BCM590XX_REG_TABLE(_name, _table) \
119 .n_voltages = ARRAY_SIZE(_table), \
120 .volt_table = _table, \
123 #define BCM590XX_REG_RANGES(_name, _ranges) \
126 .n_linear_ranges = ARRAY_SIZE(_ranges), \
127 .linear_ranges = _ranges, \
130 static struct bcm590xx_info bcm590xx_regs[] = {
131 BCM590XX_REG_TABLE(rfldo, ldo_a_table),
132 BCM590XX_REG_TABLE(camldo1, ldo_c_table),
133 BCM590XX_REG_TABLE(camldo2, ldo_c_table),
134 BCM590XX_REG_TABLE(simldo1, ldo_a_table),
135 BCM590XX_REG_TABLE(simldo2, ldo_a_table),
136 BCM590XX_REG_TABLE(sdldo, ldo_c_table),
137 BCM590XX_REG_TABLE(sdxldo, ldo_a_table),
138 BCM590XX_REG_TABLE(mmcldo1, ldo_a_table),
139 BCM590XX_REG_TABLE(mmcldo2, ldo_a_table),
140 BCM590XX_REG_TABLE(audldo, ldo_a_table),
141 BCM590XX_REG_TABLE(micldo, ldo_a_table),
142 BCM590XX_REG_TABLE(usbldo, ldo_a_table),
143 BCM590XX_REG_TABLE(vibldo, ldo_c_table),
144 BCM590XX_REG_RANGES(csr, dcdc_csr_ranges),
145 BCM590XX_REG_RANGES(iosr1, dcdc_iosr1_ranges),
146 BCM590XX_REG_RANGES(iosr2, dcdc_iosr1_ranges),
147 BCM590XX_REG_RANGES(msr, dcdc_iosr1_ranges),
148 BCM590XX_REG_RANGES(sdsr1, dcdc_sdsr1_ranges),
149 BCM590XX_REG_RANGES(sdsr2, dcdc_iosr1_ranges),
150 BCM590XX_REG_RANGES(vsr, dcdc_iosr1_ranges),
153 struct bcm590xx_reg {
154 struct regulator_desc *desc;
155 struct bcm590xx *mfd;
156 struct bcm590xx_info **info;
159 static int bcm590xx_get_vsel_register(int id)
161 if (BCM590XX_REG_IS_LDO(id))
162 return BCM590XX_RFLDOCTRL + id;
164 return BCM590XX_CSRVOUT1 + (id - BCM590XX_REG_CSR) * 3;
167 static int bcm590xx_get_enable_register(int id)
171 if (BCM590XX_REG_IS_LDO(id))
172 reg = BCM590XX_RFLDOPMCTRL1 + id * 2;
175 case BCM590XX_REG_CSR:
176 reg = BCM590XX_CSRPMCTRL1;
178 case BCM590XX_REG_IOSR1:
179 reg = BCM590XX_IOSR1PMCTRL1;
181 case BCM590XX_REG_IOSR2:
182 reg = BCM590XX_IOSR2PMCTRL1;
184 case BCM590XX_REG_MSR:
185 reg = BCM590XX_MSRPMCTRL1;
187 case BCM590XX_REG_SDSR1:
188 reg = BCM590XX_SDSR1PMCTRL1;
190 case BCM590XX_REG_SDSR2:
191 reg = BCM590XX_SDSR2PMCTRL1;
198 static struct regulator_ops bcm590xx_ops_ldo = {
199 .is_enabled = regulator_is_enabled_regmap,
200 .enable = regulator_enable_regmap,
201 .disable = regulator_disable_regmap,
202 .get_voltage_sel = regulator_get_voltage_sel_regmap,
203 .set_voltage_sel = regulator_set_voltage_sel_regmap,
204 .list_voltage = regulator_list_voltage_table,
205 .map_voltage = regulator_map_voltage_iterate,
208 static struct regulator_ops bcm590xx_ops_dcdc = {
209 .is_enabled = regulator_is_enabled_regmap,
210 .enable = regulator_enable_regmap,
211 .disable = regulator_disable_regmap,
212 .get_voltage_sel = regulator_get_voltage_sel_regmap,
213 .set_voltage_sel = regulator_set_voltage_sel_regmap,
214 .list_voltage = regulator_list_voltage_linear_range,
215 .map_voltage = regulator_map_voltage_linear_range,
218 #define BCM590XX_MATCH(_name, _id) \
221 .driver_data = (void *)&bcm590xx_regs[BCM590XX_REG_##_id], \
224 static struct of_regulator_match bcm590xx_matches[] = {
225 BCM590XX_MATCH(rfldo, RFLDO),
226 BCM590XX_MATCH(camldo1, CAMLDO1),
227 BCM590XX_MATCH(camldo2, CAMLDO2),
228 BCM590XX_MATCH(simldo1, SIMLDO1),
229 BCM590XX_MATCH(simldo2, SIMLDO2),
230 BCM590XX_MATCH(sdldo, SDLDO),
231 BCM590XX_MATCH(sdxldo, SDXLDO),
232 BCM590XX_MATCH(mmcldo1, MMCLDO1),
233 BCM590XX_MATCH(mmcldo2, MMCLDO2),
234 BCM590XX_MATCH(audldo, AUDLDO),
235 BCM590XX_MATCH(micldo, MICLDO),
236 BCM590XX_MATCH(usbldo, USBLDO),
237 BCM590XX_MATCH(vibldo, VIBLDO),
238 BCM590XX_MATCH(csr, CSR),
239 BCM590XX_MATCH(iosr1, IOSR1),
240 BCM590XX_MATCH(iosr2, IOSR2),
241 BCM590XX_MATCH(msr, MSR),
242 BCM590XX_MATCH(sdsr1, SDSR1),
243 BCM590XX_MATCH(sdsr2, SDSR2),
244 BCM590XX_MATCH(vsr, VSR),
247 static struct bcm590xx_board *bcm590xx_parse_dt_reg_data(
248 struct platform_device *pdev,
249 struct of_regulator_match **bcm590xx_reg_matches)
251 struct bcm590xx_board *data;
252 struct device_node *np = pdev->dev.parent->of_node;
253 struct device_node *regulators;
254 struct of_regulator_match *matches = bcm590xx_matches;
255 int count = ARRAY_SIZE(bcm590xx_matches);
260 dev_err(&pdev->dev, "of node not found\n");
264 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
266 dev_err(&pdev->dev, "failed to allocate regulator board data\n");
270 np = of_node_get(np);
271 regulators = of_get_child_by_name(np, "regulators");
273 dev_warn(&pdev->dev, "regulator node not found\n");
277 ret = of_regulator_match(&pdev->dev, regulators, matches, count);
278 of_node_put(regulators);
280 dev_err(&pdev->dev, "Error parsing regulator init data: %d\n",
285 *bcm590xx_reg_matches = matches;
287 for (idx = 0; idx < count; idx++) {
288 if (!matches[idx].init_data || !matches[idx].of_node)
291 data->bcm590xx_pmu_init_data[idx] = matches[idx].init_data;
297 static int bcm590xx_probe(struct platform_device *pdev)
299 struct bcm590xx *bcm590xx = dev_get_drvdata(pdev->dev.parent);
300 struct bcm590xx_board *pmu_data = NULL;
301 struct bcm590xx_reg *pmu;
302 struct regulator_config config = { };
303 struct bcm590xx_info *info;
304 struct regulator_init_data *reg_data;
305 struct regulator_dev *rdev;
306 struct of_regulator_match *bcm590xx_reg_matches = NULL;
309 pmu_data = bcm590xx_parse_dt_reg_data(pdev,
310 &bcm590xx_reg_matches);
312 pmu = devm_kzalloc(&pdev->dev, sizeof(*pmu), GFP_KERNEL);
314 dev_err(&pdev->dev, "Memory allocation failed for pmu\n");
320 platform_set_drvdata(pdev, pmu);
322 pmu->desc = devm_kzalloc(&pdev->dev, BCM590XX_NUM_REGS *
323 sizeof(struct regulator_desc), GFP_KERNEL);
325 dev_err(&pdev->dev, "Memory alloc fails for desc\n");
329 pmu->info = devm_kzalloc(&pdev->dev, BCM590XX_NUM_REGS *
330 sizeof(struct bcm590xx_info *), GFP_KERNEL);
332 dev_err(&pdev->dev, "Memory alloc fails for info\n");
336 info = bcm590xx_regs;
338 for (i = 0; i < BCM590XX_NUM_REGS; i++, info++) {
340 reg_data = pmu_data->bcm590xx_pmu_init_data[i];
344 /* Register the regulators */
347 pmu->desc[i].name = info->name;
348 pmu->desc[i].supply_name = info->vin_name;
350 pmu->desc[i].volt_table = info->volt_table;
351 pmu->desc[i].n_voltages = info->n_voltages;
352 pmu->desc[i].linear_ranges = info->linear_ranges;
353 pmu->desc[i].n_linear_ranges = info->n_linear_ranges;
355 if (BCM590XX_REG_IS_LDO(i)) {
356 pmu->desc[i].ops = &bcm590xx_ops_ldo;
357 pmu->desc[i].vsel_mask = BCM590XX_LDO_VSEL_MASK;
359 pmu->desc[i].ops = &bcm590xx_ops_dcdc;
360 pmu->desc[i].vsel_mask = BCM590XX_SR_VSEL_MASK;
363 pmu->desc[i].vsel_reg = bcm590xx_get_vsel_register(i);
364 pmu->desc[i].enable_is_inverted = true;
365 pmu->desc[i].enable_mask = BCM590XX_REG_ENABLE;
366 pmu->desc[i].enable_reg = bcm590xx_get_enable_register(i);
367 pmu->desc[i].type = REGULATOR_VOLTAGE;
368 pmu->desc[i].owner = THIS_MODULE;
370 config.dev = bcm590xx->dev;
371 config.init_data = reg_data;
372 config.driver_data = pmu;
373 config.regmap = bcm590xx->regmap;
375 if (bcm590xx_reg_matches)
376 config.of_node = bcm590xx_reg_matches[i].of_node;
378 rdev = devm_regulator_register(&pdev->dev, &pmu->desc[i],
381 dev_err(bcm590xx->dev,
382 "failed to register %s regulator\n",
384 return PTR_ERR(rdev);
391 static struct platform_driver bcm590xx_regulator_driver = {
393 .name = "bcm590xx-vregs",
394 .owner = THIS_MODULE,
396 .probe = bcm590xx_probe,
398 module_platform_driver(bcm590xx_regulator_driver);
400 MODULE_AUTHOR("Matt Porter <mporter@linaro.org>");
401 MODULE_DESCRIPTION("BCM590xx voltage regulator driver");
402 MODULE_LICENSE("GPL v2");
403 MODULE_ALIAS("platform:bcm590xx-vregs");