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462c9fc5 MP |
1 | /* |
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 | ||
c6466950 | 25 | /* I2C slave 0 registers */ |
462c9fc5 MP |
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 | |
462c9fc5 MP |
34 | #define BCM590XX_RFLDOCTRL 0x96 |
35 | #define BCM590XX_CSRVOUT1 0xc0 | |
c6466950 MP |
36 | |
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) | |
462c9fc5 MP |
54 | #define BCM590XX_LDO_VSEL_MASK GENMASK(5, 3) |
55 | #define BCM590XX_SR_VSEL_MASK GENMASK(5, 0) | |
56 | ||
c6466950 MP |
57 | /* |
58 | * RFLDO to VSR regulators are | |
59 | * accessed via I2C slave 0 | |
60 | */ | |
61 | ||
462c9fc5 MP |
62 | /* 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 | ||
c6466950 MP |
86 | /* |
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 | |
462c9fc5 MP |
100 | |
101 | #define BCM590XX_REG_IS_LDO(n) (n < BCM590XX_REG_CSR) | |
c6466950 MP |
102 | #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) | |
462c9fc5 MP |
105 | |
106 | struct bcm590xx_board { | |
107 | struct regulator_init_data *bcm590xx_pmu_init_data[BCM590XX_NUM_REGS]; | |
108 | }; | |
109 | ||
110 | /* LDO group A: supported voltages in microvolts */ | |
111 | static 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 */ | |
117 | static const unsigned int ldo_c_table[] = { | |
118 | 3100000, 1800000, 2500000, 2700000, 2800000, | |
119 | 2900000, 3000000, 3300000, | |
120 | }; | |
121 | ||
636f4a31 GW |
122 | static const unsigned int ldo_vbus[] = { |
123 | 5000000, | |
124 | }; | |
125 | ||
462c9fc5 MP |
126 | /* DCDC group CSR: supported voltages in microvolts */ |
127 | static 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 */ | |
134 | static 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 */ | |
142 | static 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 | ||
148 | struct 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, \ | |
1e791405 | 167 | .n_voltages = 64, \ |
462c9fc5 MP |
168 | .n_linear_ranges = ARRAY_SIZE(_ranges), \ |
169 | .linear_ranges = _ranges, \ | |
170 | } | |
171 | ||
172 | static 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), | |
c6466950 MP |
193 | 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), | |
636f4a31 | 199 | BCM590XX_REG_TABLE(vbus, ldo_vbus), |
462c9fc5 MP |
200 | }; |
201 | ||
202 | struct bcm590xx_reg { | |
203 | struct regulator_desc *desc; | |
204 | struct bcm590xx *mfd; | |
462c9fc5 MP |
205 | }; |
206 | ||
207 | static int bcm590xx_get_vsel_register(int id) | |
208 | { | |
209 | if (BCM590XX_REG_IS_LDO(id)) | |
210 | return BCM590XX_RFLDOCTRL + id; | |
c6466950 MP |
211 | else if (BCM590XX_REG_IS_GPLDO(id)) |
212 | return BCM590XX_GPLDO1CTRL + id; | |
462c9fc5 MP |
213 | else |
214 | return BCM590XX_CSRVOUT1 + (id - BCM590XX_REG_CSR) * 3; | |
215 | } | |
216 | ||
217 | static int bcm590xx_get_enable_register(int id) | |
218 | { | |
219 | int reg = 0; | |
220 | ||
221 | if (BCM590XX_REG_IS_LDO(id)) | |
222 | reg = BCM590XX_RFLDOPMCTRL1 + id * 2; | |
c6466950 MP |
223 | else if (BCM590XX_REG_IS_GPLDO(id)) |
224 | reg = BCM590XX_GPLDO1PMCTRL1 + id * 2; | |
462c9fc5 MP |
225 | else |
226 | switch (id) { | |
227 | case BCM590XX_REG_CSR: | |
228 | reg = BCM590XX_CSRPMCTRL1; | |
229 | break; | |
230 | case BCM590XX_REG_IOSR1: | |
231 | reg = BCM590XX_IOSR1PMCTRL1; | |
232 | break; | |
233 | case BCM590XX_REG_IOSR2: | |
234 | reg = BCM590XX_IOSR2PMCTRL1; | |
235 | break; | |
236 | case BCM590XX_REG_MSR: | |
237 | reg = BCM590XX_MSRPMCTRL1; | |
238 | break; | |
239 | case BCM590XX_REG_SDSR1: | |
240 | reg = BCM590XX_SDSR1PMCTRL1; | |
241 | break; | |
242 | case BCM590XX_REG_SDSR2: | |
243 | reg = BCM590XX_SDSR2PMCTRL1; | |
244 | break; | |
c6466950 MP |
245 | case BCM590XX_REG_VBUS: |
246 | reg = BCM590XX_OTG_CTRL; | |
f3f400e7 | 247 | } |
462c9fc5 | 248 | |
c6466950 | 249 | |
462c9fc5 MP |
250 | return reg; |
251 | } | |
252 | ||
253 | static struct regulator_ops bcm590xx_ops_ldo = { | |
254 | .is_enabled = regulator_is_enabled_regmap, | |
255 | .enable = regulator_enable_regmap, | |
256 | .disable = regulator_disable_regmap, | |
257 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
258 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
259 | .list_voltage = regulator_list_voltage_table, | |
260 | .map_voltage = regulator_map_voltage_iterate, | |
261 | }; | |
262 | ||
263 | static struct regulator_ops bcm590xx_ops_dcdc = { | |
264 | .is_enabled = regulator_is_enabled_regmap, | |
265 | .enable = regulator_enable_regmap, | |
266 | .disable = regulator_disable_regmap, | |
267 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
268 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
269 | .list_voltage = regulator_list_voltage_linear_range, | |
270 | .map_voltage = regulator_map_voltage_linear_range, | |
271 | }; | |
272 | ||
c6466950 MP |
273 | static struct regulator_ops bcm590xx_ops_vbus = { |
274 | .is_enabled = regulator_is_enabled_regmap, | |
275 | .enable = regulator_enable_regmap, | |
276 | .disable = regulator_disable_regmap, | |
277 | }; | |
278 | ||
462c9fc5 MP |
279 | #define BCM590XX_MATCH(_name, _id) \ |
280 | { \ | |
281 | .name = #_name, \ | |
282 | .driver_data = (void *)&bcm590xx_regs[BCM590XX_REG_##_id], \ | |
283 | } | |
284 | ||
285 | static struct of_regulator_match bcm590xx_matches[] = { | |
286 | BCM590XX_MATCH(rfldo, RFLDO), | |
287 | BCM590XX_MATCH(camldo1, CAMLDO1), | |
288 | BCM590XX_MATCH(camldo2, CAMLDO2), | |
289 | BCM590XX_MATCH(simldo1, SIMLDO1), | |
290 | BCM590XX_MATCH(simldo2, SIMLDO2), | |
291 | BCM590XX_MATCH(sdldo, SDLDO), | |
292 | BCM590XX_MATCH(sdxldo, SDXLDO), | |
293 | BCM590XX_MATCH(mmcldo1, MMCLDO1), | |
294 | BCM590XX_MATCH(mmcldo2, MMCLDO2), | |
295 | BCM590XX_MATCH(audldo, AUDLDO), | |
296 | BCM590XX_MATCH(micldo, MICLDO), | |
297 | BCM590XX_MATCH(usbldo, USBLDO), | |
298 | BCM590XX_MATCH(vibldo, VIBLDO), | |
299 | BCM590XX_MATCH(csr, CSR), | |
300 | BCM590XX_MATCH(iosr1, IOSR1), | |
301 | BCM590XX_MATCH(iosr2, IOSR2), | |
302 | BCM590XX_MATCH(msr, MSR), | |
303 | BCM590XX_MATCH(sdsr1, SDSR1), | |
304 | BCM590XX_MATCH(sdsr2, SDSR2), | |
305 | BCM590XX_MATCH(vsr, VSR), | |
c6466950 MP |
306 | BCM590XX_MATCH(gpldo1, GPLDO1), |
307 | BCM590XX_MATCH(gpldo2, GPLDO2), | |
308 | BCM590XX_MATCH(gpldo3, GPLDO3), | |
309 | BCM590XX_MATCH(gpldo4, GPLDO4), | |
310 | BCM590XX_MATCH(gpldo5, GPLDO5), | |
311 | BCM590XX_MATCH(gpldo6, GPLDO6), | |
312 | BCM590XX_MATCH(vbus, VBUS), | |
462c9fc5 MP |
313 | }; |
314 | ||
315 | static struct bcm590xx_board *bcm590xx_parse_dt_reg_data( | |
316 | struct platform_device *pdev, | |
317 | struct of_regulator_match **bcm590xx_reg_matches) | |
318 | { | |
319 | struct bcm590xx_board *data; | |
320 | struct device_node *np = pdev->dev.parent->of_node; | |
321 | struct device_node *regulators; | |
322 | struct of_regulator_match *matches = bcm590xx_matches; | |
323 | int count = ARRAY_SIZE(bcm590xx_matches); | |
324 | int idx = 0; | |
325 | int ret; | |
326 | ||
327 | if (!np) { | |
328 | dev_err(&pdev->dev, "of node not found\n"); | |
329 | return NULL; | |
330 | } | |
331 | ||
332 | data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); | |
c969faad | 333 | if (!data) |
462c9fc5 | 334 | return NULL; |
462c9fc5 MP |
335 | |
336 | np = of_node_get(np); | |
337 | regulators = of_get_child_by_name(np, "regulators"); | |
338 | if (!regulators) { | |
339 | dev_warn(&pdev->dev, "regulator node not found\n"); | |
340 | return NULL; | |
341 | } | |
342 | ||
343 | ret = of_regulator_match(&pdev->dev, regulators, matches, count); | |
344 | of_node_put(regulators); | |
345 | if (ret < 0) { | |
346 | dev_err(&pdev->dev, "Error parsing regulator init data: %d\n", | |
347 | ret); | |
348 | return NULL; | |
349 | } | |
350 | ||
351 | *bcm590xx_reg_matches = matches; | |
352 | ||
353 | for (idx = 0; idx < count; idx++) { | |
354 | if (!matches[idx].init_data || !matches[idx].of_node) | |
355 | continue; | |
356 | ||
357 | data->bcm590xx_pmu_init_data[idx] = matches[idx].init_data; | |
358 | } | |
359 | ||
360 | return data; | |
361 | } | |
362 | ||
363 | static int bcm590xx_probe(struct platform_device *pdev) | |
364 | { | |
365 | struct bcm590xx *bcm590xx = dev_get_drvdata(pdev->dev.parent); | |
366 | struct bcm590xx_board *pmu_data = NULL; | |
367 | struct bcm590xx_reg *pmu; | |
368 | struct regulator_config config = { }; | |
369 | struct bcm590xx_info *info; | |
370 | struct regulator_init_data *reg_data; | |
371 | struct regulator_dev *rdev; | |
372 | struct of_regulator_match *bcm590xx_reg_matches = NULL; | |
373 | int i; | |
374 | ||
375 | pmu_data = bcm590xx_parse_dt_reg_data(pdev, | |
376 | &bcm590xx_reg_matches); | |
377 | ||
378 | pmu = devm_kzalloc(&pdev->dev, sizeof(*pmu), GFP_KERNEL); | |
c969faad | 379 | if (!pmu) |
462c9fc5 | 380 | return -ENOMEM; |
462c9fc5 MP |
381 | |
382 | pmu->mfd = bcm590xx; | |
383 | ||
384 | platform_set_drvdata(pdev, pmu); | |
385 | ||
386 | pmu->desc = devm_kzalloc(&pdev->dev, BCM590XX_NUM_REGS * | |
387 | sizeof(struct regulator_desc), GFP_KERNEL); | |
c969faad | 388 | if (!pmu->desc) |
462c9fc5 | 389 | return -ENOMEM; |
462c9fc5 | 390 | |
462c9fc5 MP |
391 | info = bcm590xx_regs; |
392 | ||
393 | for (i = 0; i < BCM590XX_NUM_REGS; i++, info++) { | |
394 | if (pmu_data) | |
395 | reg_data = pmu_data->bcm590xx_pmu_init_data[i]; | |
396 | else | |
397 | reg_data = NULL; | |
398 | ||
399 | /* Register the regulators */ | |
462c9fc5 MP |
400 | pmu->desc[i].name = info->name; |
401 | pmu->desc[i].supply_name = info->vin_name; | |
402 | pmu->desc[i].id = i; | |
403 | pmu->desc[i].volt_table = info->volt_table; | |
404 | pmu->desc[i].n_voltages = info->n_voltages; | |
405 | pmu->desc[i].linear_ranges = info->linear_ranges; | |
406 | pmu->desc[i].n_linear_ranges = info->n_linear_ranges; | |
407 | ||
c6466950 | 408 | if ((BCM590XX_REG_IS_LDO(i)) || (BCM590XX_REG_IS_GPLDO(i))) { |
462c9fc5 MP |
409 | pmu->desc[i].ops = &bcm590xx_ops_ldo; |
410 | pmu->desc[i].vsel_mask = BCM590XX_LDO_VSEL_MASK; | |
c6466950 MP |
411 | } else if (BCM590XX_REG_IS_VBUS(i)) |
412 | pmu->desc[i].ops = &bcm590xx_ops_vbus; | |
413 | else { | |
462c9fc5 MP |
414 | pmu->desc[i].ops = &bcm590xx_ops_dcdc; |
415 | pmu->desc[i].vsel_mask = BCM590XX_SR_VSEL_MASK; | |
416 | } | |
417 | ||
c6466950 MP |
418 | if (BCM590XX_REG_IS_VBUS(i)) |
419 | pmu->desc[i].enable_mask = BCM590XX_VBUS_ENABLE; | |
420 | else { | |
421 | pmu->desc[i].vsel_reg = bcm590xx_get_vsel_register(i); | |
422 | pmu->desc[i].enable_is_inverted = true; | |
423 | pmu->desc[i].enable_mask = BCM590XX_REG_ENABLE; | |
424 | } | |
462c9fc5 MP |
425 | pmu->desc[i].enable_reg = bcm590xx_get_enable_register(i); |
426 | pmu->desc[i].type = REGULATOR_VOLTAGE; | |
427 | pmu->desc[i].owner = THIS_MODULE; | |
428 | ||
429 | config.dev = bcm590xx->dev; | |
430 | config.init_data = reg_data; | |
431 | config.driver_data = pmu; | |
c6466950 MP |
432 | if (BCM590XX_REG_IS_GPLDO(i) || BCM590XX_REG_IS_VBUS(i)) |
433 | config.regmap = bcm590xx->regmap_sec; | |
434 | else | |
435 | config.regmap = bcm590xx->regmap_pri; | |
462c9fc5 MP |
436 | |
437 | if (bcm590xx_reg_matches) | |
438 | config.of_node = bcm590xx_reg_matches[i].of_node; | |
439 | ||
440 | rdev = devm_regulator_register(&pdev->dev, &pmu->desc[i], | |
441 | &config); | |
442 | if (IS_ERR(rdev)) { | |
443 | dev_err(bcm590xx->dev, | |
444 | "failed to register %s regulator\n", | |
445 | pdev->name); | |
446 | return PTR_ERR(rdev); | |
447 | } | |
462c9fc5 MP |
448 | } |
449 | ||
450 | return 0; | |
451 | } | |
452 | ||
453 | static struct platform_driver bcm590xx_regulator_driver = { | |
454 | .driver = { | |
455 | .name = "bcm590xx-vregs", | |
462c9fc5 MP |
456 | }, |
457 | .probe = bcm590xx_probe, | |
458 | }; | |
459 | module_platform_driver(bcm590xx_regulator_driver); | |
460 | ||
461 | MODULE_AUTHOR("Matt Porter <mporter@linaro.org>"); | |
462 | MODULE_DESCRIPTION("BCM590xx voltage regulator driver"); | |
463 | MODULE_LICENSE("GPL v2"); | |
c9347431 | 464 | MODULE_ALIAS("platform:bcm590xx-vregs"); |