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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
462c9fc5 MP |
2 | /* |
3 | * Broadcom BCM590xx regulator driver | |
4 | * | |
5 | * Copyright 2014 Linaro Limited | |
6 | * Author: Matt Porter <mporter@linaro.org> | |
462c9fc5 MP |
7 | */ |
8 | ||
9 | #include <linux/err.h> | |
10 | #include <linux/init.h> | |
11 | #include <linux/kernel.h> | |
12 | #include <linux/mfd/bcm590xx.h> | |
13 | #include <linux/module.h> | |
14 | #include <linux/of.h> | |
15 | #include <linux/platform_device.h> | |
16 | #include <linux/regulator/driver.h> | |
17 | #include <linux/regulator/machine.h> | |
18 | #include <linux/regulator/of_regulator.h> | |
19 | #include <linux/slab.h> | |
20 | ||
c6466950 | 21 | /* I2C slave 0 registers */ |
462c9fc5 MP |
22 | #define BCM590XX_RFLDOPMCTRL1 0x60 |
23 | #define BCM590XX_IOSR1PMCTRL1 0x7a | |
24 | #define BCM590XX_IOSR2PMCTRL1 0x7c | |
25 | #define BCM590XX_CSRPMCTRL1 0x7e | |
26 | #define BCM590XX_SDSR1PMCTRL1 0x82 | |
27 | #define BCM590XX_SDSR2PMCTRL1 0x86 | |
28 | #define BCM590XX_MSRPMCTRL1 0x8a | |
29 | #define BCM590XX_VSRPMCTRL1 0x8e | |
462c9fc5 MP |
30 | #define BCM590XX_RFLDOCTRL 0x96 |
31 | #define BCM590XX_CSRVOUT1 0xc0 | |
c6466950 MP |
32 | |
33 | /* I2C slave 1 registers */ | |
34 | #define BCM590XX_GPLDO5PMCTRL1 0x16 | |
35 | #define BCM590XX_GPLDO6PMCTRL1 0x18 | |
36 | #define BCM590XX_GPLDO1CTRL 0x1a | |
37 | #define BCM590XX_GPLDO2CTRL 0x1b | |
38 | #define BCM590XX_GPLDO3CTRL 0x1c | |
39 | #define BCM590XX_GPLDO4CTRL 0x1d | |
40 | #define BCM590XX_GPLDO5CTRL 0x1e | |
41 | #define BCM590XX_GPLDO6CTRL 0x1f | |
42 | #define BCM590XX_OTG_CTRL 0x40 | |
43 | #define BCM590XX_GPLDO1PMCTRL1 0x57 | |
44 | #define BCM590XX_GPLDO2PMCTRL1 0x59 | |
45 | #define BCM590XX_GPLDO3PMCTRL1 0x5b | |
46 | #define BCM590XX_GPLDO4PMCTRL1 0x5d | |
47 | ||
48 | #define BCM590XX_REG_ENABLE BIT(7) | |
49 | #define BCM590XX_VBUS_ENABLE BIT(2) | |
462c9fc5 MP |
50 | #define BCM590XX_LDO_VSEL_MASK GENMASK(5, 3) |
51 | #define BCM590XX_SR_VSEL_MASK GENMASK(5, 0) | |
52 | ||
c6466950 MP |
53 | /* |
54 | * RFLDO to VSR regulators are | |
55 | * accessed via I2C slave 0 | |
56 | */ | |
57 | ||
462c9fc5 MP |
58 | /* LDO regulator IDs */ |
59 | #define BCM590XX_REG_RFLDO 0 | |
60 | #define BCM590XX_REG_CAMLDO1 1 | |
61 | #define BCM590XX_REG_CAMLDO2 2 | |
62 | #define BCM590XX_REG_SIMLDO1 3 | |
63 | #define BCM590XX_REG_SIMLDO2 4 | |
64 | #define BCM590XX_REG_SDLDO 5 | |
65 | #define BCM590XX_REG_SDXLDO 6 | |
66 | #define BCM590XX_REG_MMCLDO1 7 | |
67 | #define BCM590XX_REG_MMCLDO2 8 | |
68 | #define BCM590XX_REG_AUDLDO 9 | |
69 | #define BCM590XX_REG_MICLDO 10 | |
70 | #define BCM590XX_REG_USBLDO 11 | |
71 | #define BCM590XX_REG_VIBLDO 12 | |
72 | ||
73 | /* DCDC regulator IDs */ | |
74 | #define BCM590XX_REG_CSR 13 | |
75 | #define BCM590XX_REG_IOSR1 14 | |
76 | #define BCM590XX_REG_IOSR2 15 | |
77 | #define BCM590XX_REG_MSR 16 | |
78 | #define BCM590XX_REG_SDSR1 17 | |
79 | #define BCM590XX_REG_SDSR2 18 | |
80 | #define BCM590XX_REG_VSR 19 | |
81 | ||
c6466950 MP |
82 | /* |
83 | * GPLDO1 to VBUS regulators are | |
84 | * accessed via I2C slave 1 | |
85 | */ | |
86 | ||
87 | #define BCM590XX_REG_GPLDO1 20 | |
88 | #define BCM590XX_REG_GPLDO2 21 | |
89 | #define BCM590XX_REG_GPLDO3 22 | |
90 | #define BCM590XX_REG_GPLDO4 23 | |
91 | #define BCM590XX_REG_GPLDO5 24 | |
92 | #define BCM590XX_REG_GPLDO6 25 | |
93 | #define BCM590XX_REG_VBUS 26 | |
94 | ||
95 | #define BCM590XX_NUM_REGS 27 | |
462c9fc5 MP |
96 | |
97 | #define BCM590XX_REG_IS_LDO(n) (n < BCM590XX_REG_CSR) | |
c6466950 MP |
98 | #define BCM590XX_REG_IS_GPLDO(n) \ |
99 | ((n > BCM590XX_REG_VSR) && (n < BCM590XX_REG_VBUS)) | |
100 | #define BCM590XX_REG_IS_VBUS(n) (n == BCM590XX_REG_VBUS) | |
462c9fc5 | 101 | |
462c9fc5 MP |
102 | /* LDO group A: supported voltages in microvolts */ |
103 | static const unsigned int ldo_a_table[] = { | |
104 | 1200000, 1800000, 2500000, 2700000, 2800000, | |
105 | 2900000, 3000000, 3300000, | |
106 | }; | |
107 | ||
108 | /* LDO group C: supported voltages in microvolts */ | |
109 | static const unsigned int ldo_c_table[] = { | |
110 | 3100000, 1800000, 2500000, 2700000, 2800000, | |
111 | 2900000, 3000000, 3300000, | |
112 | }; | |
113 | ||
636f4a31 GW |
114 | static const unsigned int ldo_vbus[] = { |
115 | 5000000, | |
116 | }; | |
117 | ||
462c9fc5 MP |
118 | /* DCDC group CSR: supported voltages in microvolts */ |
119 | static const struct regulator_linear_range dcdc_csr_ranges[] = { | |
120 | REGULATOR_LINEAR_RANGE(860000, 2, 50, 10000), | |
121 | REGULATOR_LINEAR_RANGE(1360000, 51, 55, 20000), | |
122 | REGULATOR_LINEAR_RANGE(900000, 56, 63, 0), | |
123 | }; | |
124 | ||
125 | /* DCDC group IOSR1: supported voltages in microvolts */ | |
126 | static const struct regulator_linear_range dcdc_iosr1_ranges[] = { | |
127 | REGULATOR_LINEAR_RANGE(860000, 2, 51, 10000), | |
128 | REGULATOR_LINEAR_RANGE(1500000, 52, 52, 0), | |
129 | REGULATOR_LINEAR_RANGE(1800000, 53, 53, 0), | |
130 | REGULATOR_LINEAR_RANGE(900000, 54, 63, 0), | |
131 | }; | |
132 | ||
133 | /* DCDC group SDSR1: supported voltages in microvolts */ | |
134 | static const struct regulator_linear_range dcdc_sdsr1_ranges[] = { | |
135 | REGULATOR_LINEAR_RANGE(860000, 2, 50, 10000), | |
136 | REGULATOR_LINEAR_RANGE(1340000, 51, 51, 0), | |
137 | REGULATOR_LINEAR_RANGE(900000, 52, 63, 0), | |
138 | }; | |
139 | ||
140 | struct bcm590xx_info { | |
141 | const char *name; | |
142 | const char *vin_name; | |
143 | u8 n_voltages; | |
144 | const unsigned int *volt_table; | |
145 | u8 n_linear_ranges; | |
146 | const struct regulator_linear_range *linear_ranges; | |
147 | }; | |
148 | ||
149 | #define BCM590XX_REG_TABLE(_name, _table) \ | |
150 | { \ | |
151 | .name = #_name, \ | |
152 | .n_voltages = ARRAY_SIZE(_table), \ | |
153 | .volt_table = _table, \ | |
154 | } | |
155 | ||
156 | #define BCM590XX_REG_RANGES(_name, _ranges) \ | |
157 | { \ | |
158 | .name = #_name, \ | |
1e791405 | 159 | .n_voltages = 64, \ |
462c9fc5 MP |
160 | .n_linear_ranges = ARRAY_SIZE(_ranges), \ |
161 | .linear_ranges = _ranges, \ | |
162 | } | |
163 | ||
164 | static struct bcm590xx_info bcm590xx_regs[] = { | |
165 | BCM590XX_REG_TABLE(rfldo, ldo_a_table), | |
166 | BCM590XX_REG_TABLE(camldo1, ldo_c_table), | |
167 | BCM590XX_REG_TABLE(camldo2, ldo_c_table), | |
168 | BCM590XX_REG_TABLE(simldo1, ldo_a_table), | |
169 | BCM590XX_REG_TABLE(simldo2, ldo_a_table), | |
170 | BCM590XX_REG_TABLE(sdldo, ldo_c_table), | |
171 | BCM590XX_REG_TABLE(sdxldo, ldo_a_table), | |
172 | BCM590XX_REG_TABLE(mmcldo1, ldo_a_table), | |
173 | BCM590XX_REG_TABLE(mmcldo2, ldo_a_table), | |
174 | BCM590XX_REG_TABLE(audldo, ldo_a_table), | |
175 | BCM590XX_REG_TABLE(micldo, ldo_a_table), | |
176 | BCM590XX_REG_TABLE(usbldo, ldo_a_table), | |
177 | BCM590XX_REG_TABLE(vibldo, ldo_c_table), | |
178 | BCM590XX_REG_RANGES(csr, dcdc_csr_ranges), | |
179 | BCM590XX_REG_RANGES(iosr1, dcdc_iosr1_ranges), | |
180 | BCM590XX_REG_RANGES(iosr2, dcdc_iosr1_ranges), | |
181 | BCM590XX_REG_RANGES(msr, dcdc_iosr1_ranges), | |
182 | BCM590XX_REG_RANGES(sdsr1, dcdc_sdsr1_ranges), | |
183 | BCM590XX_REG_RANGES(sdsr2, dcdc_iosr1_ranges), | |
184 | BCM590XX_REG_RANGES(vsr, dcdc_iosr1_ranges), | |
c6466950 MP |
185 | BCM590XX_REG_TABLE(gpldo1, ldo_a_table), |
186 | BCM590XX_REG_TABLE(gpldo2, ldo_a_table), | |
187 | BCM590XX_REG_TABLE(gpldo3, ldo_a_table), | |
188 | BCM590XX_REG_TABLE(gpldo4, ldo_a_table), | |
189 | BCM590XX_REG_TABLE(gpldo5, ldo_a_table), | |
190 | BCM590XX_REG_TABLE(gpldo6, ldo_a_table), | |
636f4a31 | 191 | BCM590XX_REG_TABLE(vbus, ldo_vbus), |
462c9fc5 MP |
192 | }; |
193 | ||
194 | struct bcm590xx_reg { | |
195 | struct regulator_desc *desc; | |
196 | struct bcm590xx *mfd; | |
462c9fc5 MP |
197 | }; |
198 | ||
199 | static int bcm590xx_get_vsel_register(int id) | |
200 | { | |
201 | if (BCM590XX_REG_IS_LDO(id)) | |
202 | return BCM590XX_RFLDOCTRL + id; | |
c6466950 MP |
203 | else if (BCM590XX_REG_IS_GPLDO(id)) |
204 | return BCM590XX_GPLDO1CTRL + id; | |
462c9fc5 MP |
205 | else |
206 | return BCM590XX_CSRVOUT1 + (id - BCM590XX_REG_CSR) * 3; | |
207 | } | |
208 | ||
209 | static int bcm590xx_get_enable_register(int id) | |
210 | { | |
211 | int reg = 0; | |
212 | ||
213 | if (BCM590XX_REG_IS_LDO(id)) | |
214 | reg = BCM590XX_RFLDOPMCTRL1 + id * 2; | |
c6466950 MP |
215 | else if (BCM590XX_REG_IS_GPLDO(id)) |
216 | reg = BCM590XX_GPLDO1PMCTRL1 + id * 2; | |
462c9fc5 MP |
217 | else |
218 | switch (id) { | |
219 | case BCM590XX_REG_CSR: | |
220 | reg = BCM590XX_CSRPMCTRL1; | |
221 | break; | |
222 | case BCM590XX_REG_IOSR1: | |
223 | reg = BCM590XX_IOSR1PMCTRL1; | |
224 | break; | |
225 | case BCM590XX_REG_IOSR2: | |
226 | reg = BCM590XX_IOSR2PMCTRL1; | |
227 | break; | |
228 | case BCM590XX_REG_MSR: | |
229 | reg = BCM590XX_MSRPMCTRL1; | |
230 | break; | |
231 | case BCM590XX_REG_SDSR1: | |
232 | reg = BCM590XX_SDSR1PMCTRL1; | |
233 | break; | |
234 | case BCM590XX_REG_SDSR2: | |
235 | reg = BCM590XX_SDSR2PMCTRL1; | |
236 | break; | |
d6afa2be AL |
237 | case BCM590XX_REG_VSR: |
238 | reg = BCM590XX_VSRPMCTRL1; | |
239 | break; | |
c6466950 MP |
240 | case BCM590XX_REG_VBUS: |
241 | reg = BCM590XX_OTG_CTRL; | |
d6afa2be | 242 | break; |
f3f400e7 | 243 | } |
462c9fc5 | 244 | |
c6466950 | 245 | |
462c9fc5 MP |
246 | return reg; |
247 | } | |
248 | ||
20f860c1 | 249 | static const struct regulator_ops bcm590xx_ops_ldo = { |
462c9fc5 MP |
250 | .is_enabled = regulator_is_enabled_regmap, |
251 | .enable = regulator_enable_regmap, | |
252 | .disable = regulator_disable_regmap, | |
253 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
254 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
255 | .list_voltage = regulator_list_voltage_table, | |
256 | .map_voltage = regulator_map_voltage_iterate, | |
257 | }; | |
258 | ||
20f860c1 | 259 | static const struct regulator_ops bcm590xx_ops_dcdc = { |
462c9fc5 MP |
260 | .is_enabled = regulator_is_enabled_regmap, |
261 | .enable = regulator_enable_regmap, | |
262 | .disable = regulator_disable_regmap, | |
263 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
264 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
265 | .list_voltage = regulator_list_voltage_linear_range, | |
266 | .map_voltage = regulator_map_voltage_linear_range, | |
267 | }; | |
268 | ||
20f860c1 | 269 | static const struct regulator_ops bcm590xx_ops_vbus = { |
c6466950 MP |
270 | .is_enabled = regulator_is_enabled_regmap, |
271 | .enable = regulator_enable_regmap, | |
272 | .disable = regulator_disable_regmap, | |
273 | }; | |
274 | ||
462c9fc5 MP |
275 | static int bcm590xx_probe(struct platform_device *pdev) |
276 | { | |
277 | struct bcm590xx *bcm590xx = dev_get_drvdata(pdev->dev.parent); | |
462c9fc5 MP |
278 | struct bcm590xx_reg *pmu; |
279 | struct regulator_config config = { }; | |
280 | struct bcm590xx_info *info; | |
462c9fc5 | 281 | struct regulator_dev *rdev; |
462c9fc5 MP |
282 | int i; |
283 | ||
462c9fc5 | 284 | pmu = devm_kzalloc(&pdev->dev, sizeof(*pmu), GFP_KERNEL); |
c969faad | 285 | if (!pmu) |
462c9fc5 | 286 | return -ENOMEM; |
462c9fc5 MP |
287 | |
288 | pmu->mfd = bcm590xx; | |
289 | ||
290 | platform_set_drvdata(pdev, pmu); | |
291 | ||
a86854d0 KC |
292 | pmu->desc = devm_kcalloc(&pdev->dev, |
293 | BCM590XX_NUM_REGS, | |
294 | sizeof(struct regulator_desc), | |
295 | GFP_KERNEL); | |
c969faad | 296 | if (!pmu->desc) |
462c9fc5 | 297 | return -ENOMEM; |
462c9fc5 | 298 | |
462c9fc5 MP |
299 | info = bcm590xx_regs; |
300 | ||
301 | for (i = 0; i < BCM590XX_NUM_REGS; i++, info++) { | |
462c9fc5 | 302 | /* Register the regulators */ |
462c9fc5 | 303 | pmu->desc[i].name = info->name; |
a4e73625 AL |
304 | pmu->desc[i].of_match = of_match_ptr(info->name); |
305 | pmu->desc[i].regulators_node = of_match_ptr("regulators"); | |
462c9fc5 MP |
306 | pmu->desc[i].supply_name = info->vin_name; |
307 | pmu->desc[i].id = i; | |
308 | pmu->desc[i].volt_table = info->volt_table; | |
309 | pmu->desc[i].n_voltages = info->n_voltages; | |
310 | pmu->desc[i].linear_ranges = info->linear_ranges; | |
311 | pmu->desc[i].n_linear_ranges = info->n_linear_ranges; | |
312 | ||
c6466950 | 313 | if ((BCM590XX_REG_IS_LDO(i)) || (BCM590XX_REG_IS_GPLDO(i))) { |
462c9fc5 MP |
314 | pmu->desc[i].ops = &bcm590xx_ops_ldo; |
315 | pmu->desc[i].vsel_mask = BCM590XX_LDO_VSEL_MASK; | |
c6466950 MP |
316 | } else if (BCM590XX_REG_IS_VBUS(i)) |
317 | pmu->desc[i].ops = &bcm590xx_ops_vbus; | |
318 | else { | |
462c9fc5 MP |
319 | pmu->desc[i].ops = &bcm590xx_ops_dcdc; |
320 | pmu->desc[i].vsel_mask = BCM590XX_SR_VSEL_MASK; | |
321 | } | |
322 | ||
c6466950 MP |
323 | if (BCM590XX_REG_IS_VBUS(i)) |
324 | pmu->desc[i].enable_mask = BCM590XX_VBUS_ENABLE; | |
325 | else { | |
326 | pmu->desc[i].vsel_reg = bcm590xx_get_vsel_register(i); | |
327 | pmu->desc[i].enable_is_inverted = true; | |
328 | pmu->desc[i].enable_mask = BCM590XX_REG_ENABLE; | |
329 | } | |
462c9fc5 MP |
330 | pmu->desc[i].enable_reg = bcm590xx_get_enable_register(i); |
331 | pmu->desc[i].type = REGULATOR_VOLTAGE; | |
332 | pmu->desc[i].owner = THIS_MODULE; | |
333 | ||
334 | config.dev = bcm590xx->dev; | |
462c9fc5 | 335 | config.driver_data = pmu; |
c6466950 MP |
336 | if (BCM590XX_REG_IS_GPLDO(i) || BCM590XX_REG_IS_VBUS(i)) |
337 | config.regmap = bcm590xx->regmap_sec; | |
338 | else | |
339 | config.regmap = bcm590xx->regmap_pri; | |
462c9fc5 | 340 | |
462c9fc5 MP |
341 | rdev = devm_regulator_register(&pdev->dev, &pmu->desc[i], |
342 | &config); | |
343 | if (IS_ERR(rdev)) { | |
344 | dev_err(bcm590xx->dev, | |
345 | "failed to register %s regulator\n", | |
346 | pdev->name); | |
347 | return PTR_ERR(rdev); | |
348 | } | |
462c9fc5 MP |
349 | } |
350 | ||
351 | return 0; | |
352 | } | |
353 | ||
354 | static struct platform_driver bcm590xx_regulator_driver = { | |
355 | .driver = { | |
356 | .name = "bcm590xx-vregs", | |
462c9fc5 MP |
357 | }, |
358 | .probe = bcm590xx_probe, | |
359 | }; | |
360 | module_platform_driver(bcm590xx_regulator_driver); | |
361 | ||
362 | MODULE_AUTHOR("Matt Porter <mporter@linaro.org>"); | |
363 | MODULE_DESCRIPTION("BCM590xx voltage regulator driver"); | |
364 | MODULE_LICENSE("GPL v2"); | |
c9347431 | 365 | MODULE_ALIAS("platform:bcm590xx-vregs"); |