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2cd64ae3 CZ |
1 | /* |
2 | * Regulator driver for Rockchip RK808 | |
3 | * | |
4 | * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd | |
5 | * | |
6 | * Author: Chris Zhong <zyw@rock-chips.com> | |
7 | * Author: Zhang Qing <zhangqing@rock-chips.com> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify it | |
10 | * under the terms and conditions of the GNU General Public License, | |
11 | * version 2, as published by the Free Software Foundation. | |
12 | * | |
13 | * This program is distributed in the hope it will be useful, but WITHOUT | |
14 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
16 | * more details. | |
2cd64ae3 CZ |
17 | */ |
18 | ||
19 | #include <linux/module.h> | |
2cd64ae3 | 20 | #include <linux/i2c.h> |
2cd64ae3 | 21 | #include <linux/mfd/rk808.h> |
2cd64ae3 CZ |
22 | #include <linux/of_device.h> |
23 | #include <linux/regulator/driver.h> | |
24 | #include <linux/regulator/of_regulator.h> | |
571a4010 CZ |
25 | |
26 | /* Field Definitions */ | |
2cd64ae3 CZ |
27 | #define RK808_BUCK_VSEL_MASK 0x3f |
28 | #define RK808_BUCK4_VSEL_MASK 0xf | |
29 | #define RK808_LDO_VSEL_MASK 0x1f | |
30 | ||
8af25227 DA |
31 | /* Ramp rate definitions for buck1 / buck2 only */ |
32 | #define RK808_RAMP_RATE_OFFSET 3 | |
33 | #define RK808_RAMP_RATE_MASK (3 << RK808_RAMP_RATE_OFFSET) | |
34 | #define RK808_RAMP_RATE_2MV_PER_US (0 << RK808_RAMP_RATE_OFFSET) | |
35 | #define RK808_RAMP_RATE_4MV_PER_US (1 << RK808_RAMP_RATE_OFFSET) | |
36 | #define RK808_RAMP_RATE_6MV_PER_US (2 << RK808_RAMP_RATE_OFFSET) | |
37 | #define RK808_RAMP_RATE_10MV_PER_US (3 << RK808_RAMP_RATE_OFFSET) | |
38 | ||
251ce318 CZ |
39 | /* Offset from XXX_ON_VSEL to XXX_SLP_VSEL */ |
40 | #define RK808_SLP_REG_OFFSET 1 | |
41 | ||
42 | /* Offset from XXX_EN_REG to SLEEP_SET_OFF_XXX */ | |
43 | #define RK808_SLP_SET_OFF_REG_OFFSET 2 | |
44 | ||
8af25227 DA |
45 | static const int rk808_buck_config_regs[] = { |
46 | RK808_BUCK1_CONFIG_REG, | |
47 | RK808_BUCK2_CONFIG_REG, | |
48 | RK808_BUCK3_CONFIG_REG, | |
49 | RK808_BUCK4_CONFIG_REG, | |
50 | }; | |
51 | ||
2cd64ae3 | 52 | static const struct regulator_linear_range rk808_buck_voltage_ranges[] = { |
1575e288 | 53 | REGULATOR_LINEAR_RANGE(712500, 0, 63, 12500), |
2cd64ae3 CZ |
54 | }; |
55 | ||
56 | static const struct regulator_linear_range rk808_buck4_voltage_ranges[] = { | |
57 | REGULATOR_LINEAR_RANGE(1800000, 0, 15, 100000), | |
58 | }; | |
59 | ||
60 | static const struct regulator_linear_range rk808_ldo_voltage_ranges[] = { | |
61 | REGULATOR_LINEAR_RANGE(1800000, 0, 16, 100000), | |
62 | }; | |
63 | ||
64 | static const struct regulator_linear_range rk808_ldo3_voltage_ranges[] = { | |
65 | REGULATOR_LINEAR_RANGE(800000, 0, 13, 100000), | |
66 | REGULATOR_LINEAR_RANGE(2500000, 15, 15, 0), | |
67 | }; | |
68 | ||
69 | static const struct regulator_linear_range rk808_ldo6_voltage_ranges[] = { | |
70 | REGULATOR_LINEAR_RANGE(800000, 0, 17, 100000), | |
71 | }; | |
72 | ||
8af25227 DA |
73 | static int rk808_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay) |
74 | { | |
75 | unsigned int ramp_value = RK808_RAMP_RATE_10MV_PER_US; | |
76 | unsigned int reg = rk808_buck_config_regs[rdev->desc->id - | |
77 | RK808_ID_DCDC1]; | |
78 | ||
79 | switch (ramp_delay) { | |
80 | case 1 ... 2000: | |
81 | ramp_value = RK808_RAMP_RATE_2MV_PER_US; | |
82 | break; | |
83 | case 2001 ... 4000: | |
84 | ramp_value = RK808_RAMP_RATE_4MV_PER_US; | |
85 | break; | |
86 | case 4001 ... 6000: | |
87 | ramp_value = RK808_RAMP_RATE_6MV_PER_US; | |
88 | break; | |
89 | case 6001 ... 10000: | |
90 | break; | |
91 | default: | |
92 | pr_warn("%s ramp_delay: %d not supported, setting 10000\n", | |
93 | rdev->desc->name, ramp_delay); | |
94 | } | |
95 | ||
96 | return regmap_update_bits(rdev->regmap, reg, | |
97 | RK808_RAMP_RATE_MASK, ramp_value); | |
98 | } | |
99 | ||
5cb2f03c | 100 | static int rk808_set_suspend_voltage(struct regulator_dev *rdev, int uv) |
251ce318 CZ |
101 | { |
102 | unsigned int reg; | |
103 | int sel = regulator_map_voltage_linear_range(rdev, uv, uv); | |
104 | ||
105 | if (sel < 0) | |
106 | return -EINVAL; | |
107 | ||
108 | reg = rdev->desc->vsel_reg + RK808_SLP_REG_OFFSET; | |
109 | ||
110 | return regmap_update_bits(rdev->regmap, reg, | |
111 | rdev->desc->vsel_mask, | |
112 | sel); | |
113 | } | |
114 | ||
5cb2f03c | 115 | static int rk808_set_suspend_enable(struct regulator_dev *rdev) |
251ce318 CZ |
116 | { |
117 | unsigned int reg; | |
118 | ||
119 | reg = rdev->desc->enable_reg + RK808_SLP_SET_OFF_REG_OFFSET; | |
120 | ||
121 | return regmap_update_bits(rdev->regmap, reg, | |
122 | rdev->desc->enable_mask, | |
123 | 0); | |
124 | } | |
125 | ||
5cb2f03c | 126 | static int rk808_set_suspend_disable(struct regulator_dev *rdev) |
251ce318 CZ |
127 | { |
128 | unsigned int reg; | |
129 | ||
130 | reg = rdev->desc->enable_reg + RK808_SLP_SET_OFF_REG_OFFSET; | |
131 | ||
132 | return regmap_update_bits(rdev->regmap, reg, | |
133 | rdev->desc->enable_mask, | |
134 | rdev->desc->enable_mask); | |
135 | } | |
136 | ||
8af25227 DA |
137 | static struct regulator_ops rk808_buck1_2_ops = { |
138 | .list_voltage = regulator_list_voltage_linear_range, | |
139 | .map_voltage = regulator_map_voltage_linear_range, | |
140 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
141 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
142 | .enable = regulator_enable_regmap, | |
143 | .disable = regulator_disable_regmap, | |
144 | .is_enabled = regulator_is_enabled_regmap, | |
145 | .set_ramp_delay = rk808_set_ramp_delay, | |
251ce318 CZ |
146 | .set_suspend_voltage = rk808_set_suspend_voltage, |
147 | .set_suspend_enable = rk808_set_suspend_enable, | |
148 | .set_suspend_disable = rk808_set_suspend_disable, | |
8af25227 DA |
149 | }; |
150 | ||
2cd64ae3 CZ |
151 | static struct regulator_ops rk808_reg_ops = { |
152 | .list_voltage = regulator_list_voltage_linear_range, | |
153 | .map_voltage = regulator_map_voltage_linear_range, | |
154 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
155 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
156 | .enable = regulator_enable_regmap, | |
157 | .disable = regulator_disable_regmap, | |
158 | .is_enabled = regulator_is_enabled_regmap, | |
251ce318 CZ |
159 | .set_suspend_voltage = rk808_set_suspend_voltage, |
160 | .set_suspend_enable = rk808_set_suspend_enable, | |
161 | .set_suspend_disable = rk808_set_suspend_disable, | |
2cd64ae3 CZ |
162 | }; |
163 | ||
164 | static struct regulator_ops rk808_switch_ops = { | |
251ce318 CZ |
165 | .enable = regulator_enable_regmap, |
166 | .disable = regulator_disable_regmap, | |
167 | .is_enabled = regulator_is_enabled_regmap, | |
168 | .set_suspend_enable = rk808_set_suspend_enable, | |
169 | .set_suspend_disable = rk808_set_suspend_disable, | |
2cd64ae3 CZ |
170 | }; |
171 | ||
172 | static const struct regulator_desc rk808_reg[] = { | |
173 | { | |
174 | .name = "DCDC_REG1", | |
b8074eba | 175 | .supply_name = "vcc1", |
2cd64ae3 | 176 | .id = RK808_ID_DCDC1, |
8af25227 | 177 | .ops = &rk808_buck1_2_ops, |
2cd64ae3 CZ |
178 | .type = REGULATOR_VOLTAGE, |
179 | .n_voltages = 64, | |
180 | .linear_ranges = rk808_buck_voltage_ranges, | |
181 | .n_linear_ranges = ARRAY_SIZE(rk808_buck_voltage_ranges), | |
182 | .vsel_reg = RK808_BUCK1_ON_VSEL_REG, | |
183 | .vsel_mask = RK808_BUCK_VSEL_MASK, | |
184 | .enable_reg = RK808_DCDC_EN_REG, | |
185 | .enable_mask = BIT(0), | |
186 | .owner = THIS_MODULE, | |
187 | }, { | |
188 | .name = "DCDC_REG2", | |
b8074eba | 189 | .supply_name = "vcc2", |
2cd64ae3 | 190 | .id = RK808_ID_DCDC2, |
8af25227 | 191 | .ops = &rk808_buck1_2_ops, |
2cd64ae3 CZ |
192 | .type = REGULATOR_VOLTAGE, |
193 | .n_voltages = 64, | |
194 | .linear_ranges = rk808_buck_voltage_ranges, | |
195 | .n_linear_ranges = ARRAY_SIZE(rk808_buck_voltage_ranges), | |
196 | .vsel_reg = RK808_BUCK2_ON_VSEL_REG, | |
197 | .vsel_mask = RK808_BUCK_VSEL_MASK, | |
198 | .enable_reg = RK808_DCDC_EN_REG, | |
199 | .enable_mask = BIT(1), | |
200 | .owner = THIS_MODULE, | |
201 | }, { | |
202 | .name = "DCDC_REG3", | |
b8074eba | 203 | .supply_name = "vcc3", |
2cd64ae3 CZ |
204 | .id = RK808_ID_DCDC3, |
205 | .ops = &rk808_switch_ops, | |
206 | .type = REGULATOR_VOLTAGE, | |
207 | .n_voltages = 1, | |
208 | .enable_reg = RK808_DCDC_EN_REG, | |
209 | .enable_mask = BIT(2), | |
210 | .owner = THIS_MODULE, | |
211 | }, { | |
212 | .name = "DCDC_REG4", | |
b8074eba | 213 | .supply_name = "vcc4", |
2cd64ae3 CZ |
214 | .id = RK808_ID_DCDC4, |
215 | .ops = &rk808_reg_ops, | |
216 | .type = REGULATOR_VOLTAGE, | |
5a82067f | 217 | .n_voltages = 16, |
2cd64ae3 CZ |
218 | .linear_ranges = rk808_buck4_voltage_ranges, |
219 | .n_linear_ranges = ARRAY_SIZE(rk808_buck4_voltage_ranges), | |
220 | .vsel_reg = RK808_BUCK4_ON_VSEL_REG, | |
221 | .vsel_mask = RK808_BUCK4_VSEL_MASK, | |
222 | .enable_reg = RK808_DCDC_EN_REG, | |
223 | .enable_mask = BIT(3), | |
224 | .owner = THIS_MODULE, | |
225 | }, { | |
226 | .name = "LDO_REG1", | |
b8074eba | 227 | .supply_name = "vcc6", |
2cd64ae3 CZ |
228 | .id = RK808_ID_LDO1, |
229 | .ops = &rk808_reg_ops, | |
230 | .type = REGULATOR_VOLTAGE, | |
231 | .n_voltages = 17, | |
232 | .linear_ranges = rk808_ldo_voltage_ranges, | |
233 | .n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges), | |
234 | .vsel_reg = RK808_LDO1_ON_VSEL_REG, | |
235 | .vsel_mask = RK808_LDO_VSEL_MASK, | |
236 | .enable_reg = RK808_LDO_EN_REG, | |
237 | .enable_mask = BIT(0), | |
28249b0c | 238 | .enable_time = 400, |
2cd64ae3 CZ |
239 | .owner = THIS_MODULE, |
240 | }, { | |
241 | .name = "LDO_REG2", | |
b8074eba | 242 | .supply_name = "vcc6", |
2cd64ae3 CZ |
243 | .id = RK808_ID_LDO2, |
244 | .ops = &rk808_reg_ops, | |
245 | .type = REGULATOR_VOLTAGE, | |
246 | .n_voltages = 17, | |
247 | .linear_ranges = rk808_ldo_voltage_ranges, | |
248 | .n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges), | |
249 | .vsel_reg = RK808_LDO2_ON_VSEL_REG, | |
250 | .vsel_mask = RK808_LDO_VSEL_MASK, | |
251 | .enable_reg = RK808_LDO_EN_REG, | |
252 | .enable_mask = BIT(1), | |
28249b0c | 253 | .enable_time = 400, |
2cd64ae3 CZ |
254 | .owner = THIS_MODULE, |
255 | }, { | |
256 | .name = "LDO_REG3", | |
b8074eba | 257 | .supply_name = "vcc7", |
2cd64ae3 CZ |
258 | .id = RK808_ID_LDO3, |
259 | .ops = &rk808_reg_ops, | |
260 | .type = REGULATOR_VOLTAGE, | |
261 | .n_voltages = 16, | |
262 | .linear_ranges = rk808_ldo3_voltage_ranges, | |
263 | .n_linear_ranges = ARRAY_SIZE(rk808_ldo3_voltage_ranges), | |
264 | .vsel_reg = RK808_LDO3_ON_VSEL_REG, | |
265 | .vsel_mask = RK808_BUCK4_VSEL_MASK, | |
266 | .enable_reg = RK808_LDO_EN_REG, | |
267 | .enable_mask = BIT(2), | |
28249b0c | 268 | .enable_time = 400, |
2cd64ae3 CZ |
269 | .owner = THIS_MODULE, |
270 | }, { | |
271 | .name = "LDO_REG4", | |
b8074eba | 272 | .supply_name = "vcc9", |
2cd64ae3 CZ |
273 | .id = RK808_ID_LDO4, |
274 | .ops = &rk808_reg_ops, | |
275 | .type = REGULATOR_VOLTAGE, | |
276 | .n_voltages = 17, | |
277 | .linear_ranges = rk808_ldo_voltage_ranges, | |
278 | .n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges), | |
279 | .vsel_reg = RK808_LDO4_ON_VSEL_REG, | |
280 | .vsel_mask = RK808_LDO_VSEL_MASK, | |
281 | .enable_reg = RK808_LDO_EN_REG, | |
282 | .enable_mask = BIT(3), | |
28249b0c | 283 | .enable_time = 400, |
2cd64ae3 CZ |
284 | .owner = THIS_MODULE, |
285 | }, { | |
286 | .name = "LDO_REG5", | |
b8074eba | 287 | .supply_name = "vcc9", |
2cd64ae3 CZ |
288 | .id = RK808_ID_LDO5, |
289 | .ops = &rk808_reg_ops, | |
290 | .type = REGULATOR_VOLTAGE, | |
291 | .n_voltages = 17, | |
292 | .linear_ranges = rk808_ldo_voltage_ranges, | |
293 | .n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges), | |
294 | .vsel_reg = RK808_LDO5_ON_VSEL_REG, | |
295 | .vsel_mask = RK808_LDO_VSEL_MASK, | |
296 | .enable_reg = RK808_LDO_EN_REG, | |
297 | .enable_mask = BIT(4), | |
28249b0c | 298 | .enable_time = 400, |
2cd64ae3 CZ |
299 | .owner = THIS_MODULE, |
300 | }, { | |
301 | .name = "LDO_REG6", | |
b8074eba | 302 | .supply_name = "vcc10", |
2cd64ae3 CZ |
303 | .id = RK808_ID_LDO6, |
304 | .ops = &rk808_reg_ops, | |
305 | .type = REGULATOR_VOLTAGE, | |
306 | .n_voltages = 18, | |
307 | .linear_ranges = rk808_ldo6_voltage_ranges, | |
308 | .n_linear_ranges = ARRAY_SIZE(rk808_ldo6_voltage_ranges), | |
309 | .vsel_reg = RK808_LDO6_ON_VSEL_REG, | |
310 | .vsel_mask = RK808_LDO_VSEL_MASK, | |
311 | .enable_reg = RK808_LDO_EN_REG, | |
312 | .enable_mask = BIT(5), | |
28249b0c | 313 | .enable_time = 400, |
2cd64ae3 CZ |
314 | .owner = THIS_MODULE, |
315 | }, { | |
316 | .name = "LDO_REG7", | |
b8074eba | 317 | .supply_name = "vcc7", |
2cd64ae3 CZ |
318 | .id = RK808_ID_LDO7, |
319 | .ops = &rk808_reg_ops, | |
320 | .type = REGULATOR_VOLTAGE, | |
321 | .n_voltages = 18, | |
322 | .linear_ranges = rk808_ldo6_voltage_ranges, | |
323 | .n_linear_ranges = ARRAY_SIZE(rk808_ldo6_voltage_ranges), | |
324 | .vsel_reg = RK808_LDO7_ON_VSEL_REG, | |
325 | .vsel_mask = RK808_LDO_VSEL_MASK, | |
326 | .enable_reg = RK808_LDO_EN_REG, | |
327 | .enable_mask = BIT(6), | |
28249b0c | 328 | .enable_time = 400, |
2cd64ae3 CZ |
329 | .owner = THIS_MODULE, |
330 | }, { | |
331 | .name = "LDO_REG8", | |
b8074eba | 332 | .supply_name = "vcc11", |
2cd64ae3 CZ |
333 | .id = RK808_ID_LDO8, |
334 | .ops = &rk808_reg_ops, | |
335 | .type = REGULATOR_VOLTAGE, | |
336 | .n_voltages = 17, | |
337 | .linear_ranges = rk808_ldo_voltage_ranges, | |
338 | .n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges), | |
339 | .vsel_reg = RK808_LDO8_ON_VSEL_REG, | |
340 | .vsel_mask = RK808_LDO_VSEL_MASK, | |
341 | .enable_reg = RK808_LDO_EN_REG, | |
342 | .enable_mask = BIT(7), | |
28249b0c | 343 | .enable_time = 400, |
2cd64ae3 CZ |
344 | .owner = THIS_MODULE, |
345 | }, { | |
346 | .name = "SWITCH_REG1", | |
b8074eba | 347 | .supply_name = "vcc8", |
2cd64ae3 CZ |
348 | .id = RK808_ID_SWITCH1, |
349 | .ops = &rk808_switch_ops, | |
350 | .type = REGULATOR_VOLTAGE, | |
351 | .enable_reg = RK808_DCDC_EN_REG, | |
352 | .enable_mask = BIT(5), | |
353 | .owner = THIS_MODULE, | |
354 | }, { | |
355 | .name = "SWITCH_REG2", | |
b8074eba | 356 | .supply_name = "vcc12", |
2cd64ae3 CZ |
357 | .id = RK808_ID_SWITCH2, |
358 | .ops = &rk808_switch_ops, | |
359 | .type = REGULATOR_VOLTAGE, | |
360 | .enable_reg = RK808_DCDC_EN_REG, | |
361 | .enable_mask = BIT(6), | |
362 | .owner = THIS_MODULE, | |
363 | }, | |
364 | }; | |
365 | ||
366 | static struct of_regulator_match rk808_reg_matches[] = { | |
367 | [RK808_ID_DCDC1] = { .name = "DCDC_REG1" }, | |
368 | [RK808_ID_DCDC2] = { .name = "DCDC_REG2" }, | |
369 | [RK808_ID_DCDC3] = { .name = "DCDC_REG3" }, | |
370 | [RK808_ID_DCDC4] = { .name = "DCDC_REG4" }, | |
371 | [RK808_ID_LDO1] = { .name = "LDO_REG1" }, | |
372 | [RK808_ID_LDO2] = { .name = "LDO_REG2" }, | |
373 | [RK808_ID_LDO3] = { .name = "LDO_REG3" }, | |
374 | [RK808_ID_LDO4] = { .name = "LDO_REG4" }, | |
375 | [RK808_ID_LDO5] = { .name = "LDO_REG5" }, | |
376 | [RK808_ID_LDO6] = { .name = "LDO_REG6" }, | |
377 | [RK808_ID_LDO7] = { .name = "LDO_REG7" }, | |
378 | [RK808_ID_LDO8] = { .name = "LDO_REG8" }, | |
379 | [RK808_ID_SWITCH1] = { .name = "SWITCH_REG1" }, | |
380 | [RK808_ID_SWITCH2] = { .name = "SWITCH_REG2" }, | |
381 | }; | |
382 | ||
2cd64ae3 CZ |
383 | static int rk808_regulator_probe(struct platform_device *pdev) |
384 | { | |
385 | struct rk808 *rk808 = dev_get_drvdata(pdev->dev.parent); | |
d76c333e | 386 | struct i2c_client *client = rk808->i2c; |
571a4010 | 387 | struct device_node *reg_np; |
462004f1 | 388 | struct regulator_config config = {}; |
2cd64ae3 | 389 | struct regulator_dev *rk808_rdev; |
571a4010 | 390 | int ret, i; |
2cd64ae3 | 391 | |
571a4010 CZ |
392 | reg_np = of_get_child_by_name(client->dev.of_node, "regulators"); |
393 | if (!reg_np) | |
394 | return -ENXIO; | |
2cd64ae3 | 395 | |
1ed3f8ce | 396 | ret = of_regulator_match(&pdev->dev, reg_np, rk808_reg_matches, |
571a4010 | 397 | RK808_NUM_REGULATORS); |
1ed3f8ce | 398 | of_node_put(reg_np); |
571a4010 | 399 | if (ret < 0) |
2cd64ae3 CZ |
400 | return ret; |
401 | ||
2cd64ae3 CZ |
402 | /* Instantiate the regulators */ |
403 | for (i = 0; i < RK808_NUM_REGULATORS; i++) { | |
571a4010 CZ |
404 | if (!rk808_reg_matches[i].init_data || |
405 | !rk808_reg_matches[i].of_node) | |
2cd64ae3 CZ |
406 | continue; |
407 | ||
d76c333e | 408 | config.dev = &client->dev; |
2cd64ae3 CZ |
409 | config.driver_data = rk808; |
410 | config.regmap = rk808->regmap; | |
571a4010 CZ |
411 | config.of_node = rk808_reg_matches[i].of_node; |
412 | config.init_data = rk808_reg_matches[i].init_data; | |
2cd64ae3 CZ |
413 | |
414 | rk808_rdev = devm_regulator_register(&pdev->dev, | |
415 | &rk808_reg[i], &config); | |
416 | if (IS_ERR(rk808_rdev)) { | |
d76c333e | 417 | dev_err(&client->dev, |
2cd64ae3 CZ |
418 | "failed to register %d regulator\n", i); |
419 | return PTR_ERR(rk808_rdev); | |
420 | } | |
2cd64ae3 | 421 | } |
571a4010 | 422 | |
2cd64ae3 CZ |
423 | return 0; |
424 | } | |
425 | ||
426 | static struct platform_driver rk808_regulator_driver = { | |
427 | .probe = rk808_regulator_probe, | |
428 | .driver = { | |
429 | .name = "rk808-regulator", | |
2cd64ae3 CZ |
430 | }, |
431 | }; | |
432 | ||
433 | module_platform_driver(rk808_regulator_driver); | |
434 | ||
435 | MODULE_DESCRIPTION("regulator driver for the rk808 series PMICs"); | |
436 | MODULE_AUTHOR("Chris Zhong<zyw@rock-chips.com>"); | |
571a4010 | 437 | MODULE_AUTHOR("Zhang Qing<zhangqing@rock-chips.com>"); |
2cd64ae3 CZ |
438 | MODULE_LICENSE("GPL"); |
439 | MODULE_ALIAS("platform:rk808-regulator"); |