1 | // SPDX-License-Identifier: GPL-2.0 |
2 | // |
3 | // Regulators driver for Dialog Semiconductor DA903x |
4 | // |
5 | // Copyright (C) 2006-2008 Marvell International Ltd. |
6 | // Copyright (C) 2008 Compulab Ltd. |
7 | |
8 | #include <linux/kernel.h> |
9 | #include <linux/init.h> |
10 | #include <linux/err.h> |
11 | #include <linux/module.h> |
12 | #include <linux/platform_device.h> |
13 | #include <linux/regulator/driver.h> |
14 | #include <linux/regulator/machine.h> |
15 | #include <linux/mfd/da903x.h> |
16 | |
17 | /* DA9030 Registers */ |
18 | #define DA9030_INVAL (-1) |
19 | #define DA9030_LDO1011 (0x10) |
20 | #define DA9030_LDO15 (0x11) |
21 | #define DA9030_LDO1416 (0x12) |
22 | #define DA9030_LDO1819 (0x13) |
23 | #define DA9030_LDO17 (0x14) |
24 | #define DA9030_BUCK2DVM1 (0x15) |
25 | #define DA9030_BUCK2DVM2 (0x16) |
26 | #define DA9030_RCTL11 (0x17) |
27 | #define DA9030_RCTL21 (0x18) |
28 | #define DA9030_LDO1 (0x90) |
29 | #define DA9030_LDO23 (0x91) |
30 | #define DA9030_LDO45 (0x92) |
31 | #define DA9030_LDO6 (0x93) |
32 | #define DA9030_LDO78 (0x94) |
33 | #define DA9030_LDO912 (0x95) |
34 | #define DA9030_BUCK (0x96) |
35 | #define DA9030_RCTL12 (0x97) |
36 | #define DA9030_RCTL22 (0x98) |
37 | #define DA9030_LDO_UNLOCK (0xa0) |
38 | #define DA9030_LDO_UNLOCK_MASK (0xe0) |
39 | #define DA9034_OVER1 (0x10) |
40 | |
41 | /* DA9034 Registers */ |
42 | #define DA9034_INVAL (-1) |
43 | #define DA9034_OVER2 (0x11) |
44 | #define DA9034_OVER3 (0x12) |
45 | #define DA9034_LDO643 (0x13) |
46 | #define DA9034_LDO987 (0x14) |
47 | #define DA9034_LDO1110 (0x15) |
48 | #define DA9034_LDO1312 (0x16) |
49 | #define DA9034_LDO1514 (0x17) |
50 | #define DA9034_VCC1 (0x20) |
51 | #define DA9034_ADTV1 (0x23) |
52 | #define DA9034_ADTV2 (0x24) |
53 | #define DA9034_AVRC (0x25) |
54 | #define DA9034_CDTV1 (0x26) |
55 | #define DA9034_CDTV2 (0x27) |
56 | #define DA9034_CVRC (0x28) |
57 | #define DA9034_SDTV1 (0x29) |
58 | #define DA9034_SDTV2 (0x2a) |
59 | #define DA9034_SVRC (0x2b) |
60 | #define DA9034_MDTV1 (0x32) |
61 | #define DA9034_MDTV2 (0x33) |
62 | #define DA9034_MVRC (0x34) |
63 | |
64 | /* DA9035 Registers. DA9034 Registers are comptabile to DA9035. */ |
65 | #define DA9035_OVER3 (0x12) |
66 | #define DA9035_VCC2 (0x1f) |
67 | #define DA9035_3DTV1 (0x2c) |
68 | #define DA9035_3DTV2 (0x2d) |
69 | #define DA9035_3VRC (0x2e) |
70 | #define DA9035_AUTOSKIP (0x2f) |
71 | |
72 | struct da903x_regulator_info { |
73 | struct regulator_desc desc; |
74 | |
75 | int max_uV; |
76 | int vol_reg; |
77 | int vol_shift; |
78 | int vol_nbits; |
79 | int update_reg; |
80 | int update_bit; |
81 | int enable_reg; |
82 | int enable_bit; |
83 | }; |
84 | |
85 | static inline struct device *to_da903x_dev(struct regulator_dev *rdev) |
86 | { |
87 | return rdev_get_dev(rdev)->parent->parent; |
88 | } |
89 | |
90 | static inline int check_range(struct da903x_regulator_info *info, |
91 | int min_uV, int max_uV) |
92 | { |
93 | if (min_uV < info->desc.min_uV || min_uV > info->max_uV) |
94 | return -EINVAL; |
95 | |
96 | return 0; |
97 | } |
98 | |
99 | /* DA9030/DA9034 common operations */ |
100 | static int da903x_set_voltage_sel(struct regulator_dev *rdev, unsigned selector) |
101 | { |
102 | struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
103 | struct device *da9034_dev = to_da903x_dev(rdev); |
104 | uint8_t val, mask; |
105 | |
106 | if (rdev->desc->n_voltages == 1) |
107 | return -EINVAL; |
108 | |
109 | val = selector << info->vol_shift; |
110 | mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; |
111 | |
112 | return da903x_update(dev: da9034_dev, reg: info->vol_reg, val, mask); |
113 | } |
114 | |
115 | static int da903x_get_voltage_sel(struct regulator_dev *rdev) |
116 | { |
117 | struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
118 | struct device *da9034_dev = to_da903x_dev(rdev); |
119 | uint8_t val, mask; |
120 | int ret; |
121 | |
122 | if (rdev->desc->n_voltages == 1) |
123 | return 0; |
124 | |
125 | ret = da903x_read(dev: da9034_dev, reg: info->vol_reg, val: &val); |
126 | if (ret) |
127 | return ret; |
128 | |
129 | mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; |
130 | val = (val & mask) >> info->vol_shift; |
131 | |
132 | return val; |
133 | } |
134 | |
135 | static int da903x_enable(struct regulator_dev *rdev) |
136 | { |
137 | struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
138 | struct device *da9034_dev = to_da903x_dev(rdev); |
139 | |
140 | return da903x_set_bits(dev: da9034_dev, reg: info->enable_reg, |
141 | bit_mask: 1 << info->enable_bit); |
142 | } |
143 | |
144 | static int da903x_disable(struct regulator_dev *rdev) |
145 | { |
146 | struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
147 | struct device *da9034_dev = to_da903x_dev(rdev); |
148 | |
149 | return da903x_clr_bits(dev: da9034_dev, reg: info->enable_reg, |
150 | bit_mask: 1 << info->enable_bit); |
151 | } |
152 | |
153 | static int da903x_is_enabled(struct regulator_dev *rdev) |
154 | { |
155 | struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
156 | struct device *da9034_dev = to_da903x_dev(rdev); |
157 | uint8_t reg_val; |
158 | int ret; |
159 | |
160 | ret = da903x_read(dev: da9034_dev, reg: info->enable_reg, val: ®_val); |
161 | if (ret) |
162 | return ret; |
163 | |
164 | return !!(reg_val & (1 << info->enable_bit)); |
165 | } |
166 | |
167 | /* DA9030 specific operations */ |
168 | static int da9030_set_ldo1_15_voltage_sel(struct regulator_dev *rdev, |
169 | unsigned selector) |
170 | { |
171 | struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
172 | struct device *da903x_dev = to_da903x_dev(rdev); |
173 | uint8_t val, mask; |
174 | int ret; |
175 | |
176 | val = selector << info->vol_shift; |
177 | mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; |
178 | val |= DA9030_LDO_UNLOCK; /* have to set UNLOCK bits */ |
179 | mask |= DA9030_LDO_UNLOCK_MASK; |
180 | |
181 | /* write twice */ |
182 | ret = da903x_update(dev: da903x_dev, reg: info->vol_reg, val, mask); |
183 | if (ret) |
184 | return ret; |
185 | |
186 | return da903x_update(dev: da903x_dev, reg: info->vol_reg, val, mask); |
187 | } |
188 | |
189 | static int da9030_map_ldo14_voltage(struct regulator_dev *rdev, |
190 | int min_uV, int max_uV) |
191 | { |
192 | struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
193 | int thresh, sel; |
194 | |
195 | if (check_range(info, min_uV, max_uV)) { |
196 | pr_err("invalid voltage range (%d, %d) uV\n" , min_uV, max_uV); |
197 | return -EINVAL; |
198 | } |
199 | |
200 | thresh = (info->max_uV + info->desc.min_uV) / 2; |
201 | if (min_uV < thresh) { |
202 | sel = DIV_ROUND_UP(thresh - min_uV, info->desc.uV_step); |
203 | sel |= 0x4; |
204 | } else { |
205 | sel = DIV_ROUND_UP(min_uV - thresh, info->desc.uV_step); |
206 | } |
207 | |
208 | return sel; |
209 | } |
210 | |
211 | static int da9030_list_ldo14_voltage(struct regulator_dev *rdev, |
212 | unsigned selector) |
213 | { |
214 | struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
215 | int volt; |
216 | |
217 | if (selector & 0x4) |
218 | volt = rdev->desc->min_uV + |
219 | rdev->desc->uV_step * (3 - (selector & ~0x4)); |
220 | else |
221 | volt = (info->max_uV + rdev->desc->min_uV) / 2 + |
222 | rdev->desc->uV_step * (selector & ~0x4); |
223 | |
224 | if (volt > info->max_uV) |
225 | return -EINVAL; |
226 | |
227 | return volt; |
228 | } |
229 | |
230 | /* DA9034 specific operations */ |
231 | static int da9034_set_dvc_voltage_sel(struct regulator_dev *rdev, |
232 | unsigned selector) |
233 | { |
234 | struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
235 | struct device *da9034_dev = to_da903x_dev(rdev); |
236 | uint8_t val, mask; |
237 | int ret; |
238 | |
239 | val = selector << info->vol_shift; |
240 | mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; |
241 | |
242 | ret = da903x_update(dev: da9034_dev, reg: info->vol_reg, val, mask); |
243 | if (ret) |
244 | return ret; |
245 | |
246 | ret = da903x_set_bits(dev: da9034_dev, reg: info->update_reg, |
247 | bit_mask: 1 << info->update_bit); |
248 | return ret; |
249 | } |
250 | |
251 | static const struct linear_range da9034_ldo12_ranges[] = { |
252 | REGULATOR_LINEAR_RANGE(1700000, 0, 7, 50000), |
253 | REGULATOR_LINEAR_RANGE(2700000, 8, 15, 50000), |
254 | }; |
255 | |
256 | static const struct regulator_ops da903x_regulator_ldo_ops = { |
257 | .set_voltage_sel = da903x_set_voltage_sel, |
258 | .get_voltage_sel = da903x_get_voltage_sel, |
259 | .list_voltage = regulator_list_voltage_linear, |
260 | .map_voltage = regulator_map_voltage_linear, |
261 | .enable = da903x_enable, |
262 | .disable = da903x_disable, |
263 | .is_enabled = da903x_is_enabled, |
264 | }; |
265 | |
266 | /* NOTE: this is dedicated for the insane DA9030 LDO14 */ |
267 | static const struct regulator_ops da9030_regulator_ldo14_ops = { |
268 | .set_voltage_sel = da903x_set_voltage_sel, |
269 | .get_voltage_sel = da903x_get_voltage_sel, |
270 | .list_voltage = da9030_list_ldo14_voltage, |
271 | .map_voltage = da9030_map_ldo14_voltage, |
272 | .enable = da903x_enable, |
273 | .disable = da903x_disable, |
274 | .is_enabled = da903x_is_enabled, |
275 | }; |
276 | |
277 | /* NOTE: this is dedicated for the DA9030 LDO1 and LDO15 that have locks */ |
278 | static const struct regulator_ops da9030_regulator_ldo1_15_ops = { |
279 | .set_voltage_sel = da9030_set_ldo1_15_voltage_sel, |
280 | .get_voltage_sel = da903x_get_voltage_sel, |
281 | .list_voltage = regulator_list_voltage_linear, |
282 | .map_voltage = regulator_map_voltage_linear, |
283 | .enable = da903x_enable, |
284 | .disable = da903x_disable, |
285 | .is_enabled = da903x_is_enabled, |
286 | }; |
287 | |
288 | static const struct regulator_ops da9034_regulator_dvc_ops = { |
289 | .set_voltage_sel = da9034_set_dvc_voltage_sel, |
290 | .get_voltage_sel = da903x_get_voltage_sel, |
291 | .list_voltage = regulator_list_voltage_linear, |
292 | .map_voltage = regulator_map_voltage_linear, |
293 | .enable = da903x_enable, |
294 | .disable = da903x_disable, |
295 | .is_enabled = da903x_is_enabled, |
296 | }; |
297 | |
298 | /* NOTE: this is dedicated for the insane LDO12 */ |
299 | static const struct regulator_ops da9034_regulator_ldo12_ops = { |
300 | .set_voltage_sel = da903x_set_voltage_sel, |
301 | .get_voltage_sel = da903x_get_voltage_sel, |
302 | .list_voltage = regulator_list_voltage_linear_range, |
303 | .map_voltage = regulator_map_voltage_linear_range, |
304 | .enable = da903x_enable, |
305 | .disable = da903x_disable, |
306 | .is_enabled = da903x_is_enabled, |
307 | }; |
308 | |
309 | #define DA903x_LDO(_pmic, _id, min, max, step, vreg, shift, nbits, ereg, ebit) \ |
310 | { \ |
311 | .desc = { \ |
312 | .name = "LDO" #_id, \ |
313 | .ops = &da903x_regulator_ldo_ops, \ |
314 | .type = REGULATOR_VOLTAGE, \ |
315 | .id = _pmic##_ID_LDO##_id, \ |
316 | .n_voltages = (step) ? ((max - min) / step + 1) : 1, \ |
317 | .owner = THIS_MODULE, \ |
318 | .min_uV = (min) * 1000, \ |
319 | .uV_step = (step) * 1000, \ |
320 | }, \ |
321 | .max_uV = (max) * 1000, \ |
322 | .vol_reg = _pmic##_##vreg, \ |
323 | .vol_shift = (shift), \ |
324 | .vol_nbits = (nbits), \ |
325 | .enable_reg = _pmic##_##ereg, \ |
326 | .enable_bit = (ebit), \ |
327 | } |
328 | |
329 | #define DA903x_DVC(_pmic, _id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \ |
330 | { \ |
331 | .desc = { \ |
332 | .name = #_id, \ |
333 | .ops = &da9034_regulator_dvc_ops, \ |
334 | .type = REGULATOR_VOLTAGE, \ |
335 | .id = _pmic##_ID_##_id, \ |
336 | .n_voltages = (step) ? ((max - min) / step + 1) : 1, \ |
337 | .owner = THIS_MODULE, \ |
338 | .min_uV = (min) * 1000, \ |
339 | .uV_step = (step) * 1000, \ |
340 | }, \ |
341 | .max_uV = (max) * 1000, \ |
342 | .vol_reg = _pmic##_##vreg, \ |
343 | .vol_shift = (0), \ |
344 | .vol_nbits = (nbits), \ |
345 | .update_reg = _pmic##_##ureg, \ |
346 | .update_bit = (ubit), \ |
347 | .enable_reg = _pmic##_##ereg, \ |
348 | .enable_bit = (ebit), \ |
349 | } |
350 | |
351 | #define DA9034_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \ |
352 | DA903x_LDO(DA9034, _id, min, max, step, vreg, shift, nbits, ereg, ebit) |
353 | |
354 | #define DA9030_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \ |
355 | DA903x_LDO(DA9030, _id, min, max, step, vreg, shift, nbits, ereg, ebit) |
356 | |
357 | #define DA9030_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \ |
358 | DA903x_DVC(DA9030, _id, min, max, step, vreg, nbits, ureg, ubit, \ |
359 | ereg, ebit) |
360 | |
361 | #define DA9034_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \ |
362 | DA903x_DVC(DA9034, _id, min, max, step, vreg, nbits, ureg, ubit, \ |
363 | ereg, ebit) |
364 | |
365 | #define DA9035_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \ |
366 | DA903x_DVC(DA9035, _id, min, max, step, vreg, nbits, ureg, ubit, \ |
367 | ereg, ebit) |
368 | |
369 | static struct da903x_regulator_info da903x_regulator_info[] = { |
370 | /* DA9030 */ |
371 | DA9030_DVC(BUCK2, 850, 1625, 25, BUCK2DVM1, 5, BUCK2DVM1, 7, RCTL11, 0), |
372 | |
373 | DA9030_LDO( 1, 1200, 3200, 100, LDO1, 0, 5, RCTL12, 1), |
374 | DA9030_LDO( 2, 1800, 3200, 100, LDO23, 0, 4, RCTL12, 2), |
375 | DA9030_LDO( 3, 1800, 3200, 100, LDO23, 4, 4, RCTL12, 3), |
376 | DA9030_LDO( 4, 1800, 3200, 100, LDO45, 0, 4, RCTL12, 4), |
377 | DA9030_LDO( 5, 1800, 3200, 100, LDO45, 4, 4, RCTL12, 5), |
378 | DA9030_LDO( 6, 1800, 3200, 100, LDO6, 0, 4, RCTL12, 6), |
379 | DA9030_LDO( 7, 1800, 3200, 100, LDO78, 0, 4, RCTL12, 7), |
380 | DA9030_LDO( 8, 1800, 3200, 100, LDO78, 4, 4, RCTL22, 0), |
381 | DA9030_LDO( 9, 1800, 3200, 100, LDO912, 0, 4, RCTL22, 1), |
382 | DA9030_LDO(10, 1800, 3200, 100, LDO1011, 0, 4, RCTL22, 2), |
383 | DA9030_LDO(11, 1800, 3200, 100, LDO1011, 4, 4, RCTL22, 3), |
384 | DA9030_LDO(12, 1800, 3200, 100, LDO912, 4, 4, RCTL22, 4), |
385 | DA9030_LDO(14, 2760, 2940, 30, LDO1416, 0, 3, RCTL11, 4), |
386 | DA9030_LDO(15, 1100, 2650, 50, LDO15, 0, 5, RCTL11, 5), |
387 | DA9030_LDO(16, 1100, 2650, 50, LDO1416, 3, 5, RCTL11, 6), |
388 | DA9030_LDO(17, 1800, 3200, 100, LDO17, 0, 4, RCTL11, 7), |
389 | DA9030_LDO(18, 1800, 3200, 100, LDO1819, 0, 4, RCTL21, 2), |
390 | DA9030_LDO(19, 1800, 3200, 100, LDO1819, 4, 4, RCTL21, 1), |
391 | DA9030_LDO(13, 2100, 2100, 0, INVAL, 0, 0, RCTL11, 3), /* fixed @2.1V */ |
392 | |
393 | /* DA9034 */ |
394 | DA9034_DVC(BUCK1, 725, 1500, 25, ADTV2, 5, VCC1, 0, OVER1, 0), |
395 | DA9034_DVC(BUCK2, 725, 1500, 25, CDTV2, 5, VCC1, 2, OVER1, 1), |
396 | DA9034_DVC(LDO2, 725, 1500, 25, SDTV2, 5, VCC1, 4, OVER1, 2), |
397 | DA9034_DVC(LDO1, 1700, 2075, 25, MDTV1, 4, VCC1, 6, OVER3, 4), |
398 | |
399 | DA9034_LDO( 3, 1800, 3300, 100, LDO643, 0, 4, OVER3, 5), |
400 | DA9034_LDO( 4, 1800, 2900,1100, LDO643, 4, 1, OVER3, 6), |
401 | DA9034_LDO( 6, 2500, 2850, 50, LDO643, 5, 3, OVER2, 0), |
402 | DA9034_LDO( 7, 2700, 3050, 50, LDO987, 0, 3, OVER2, 1), |
403 | DA9034_LDO( 8, 2700, 2850, 50, LDO987, 3, 2, OVER2, 2), |
404 | DA9034_LDO( 9, 2700, 3050, 50, LDO987, 5, 3, OVER2, 3), |
405 | DA9034_LDO(10, 2700, 3050, 50, LDO1110, 0, 3, OVER2, 4), |
406 | DA9034_LDO(11, 1800, 3300, 100, LDO1110, 4, 4, OVER2, 5), |
407 | DA9034_LDO(12, 1700, 3050, 50, LDO1312, 0, 4, OVER3, 6), |
408 | DA9034_LDO(13, 1800, 3300, 100, LDO1312, 4, 4, OVER2, 7), |
409 | DA9034_LDO(14, 1800, 3300, 100, LDO1514, 0, 4, OVER3, 0), |
410 | DA9034_LDO(15, 1800, 3300, 100, LDO1514, 4, 4, OVER3, 1), |
411 | DA9034_LDO(5, 3100, 3100, 0, INVAL, 0, 0, OVER3, 7), /* fixed @3.1V */ |
412 | |
413 | /* DA9035 */ |
414 | DA9035_DVC(BUCK3, 1800, 2200, 100, 3DTV1, 3, VCC2, 0, OVER3, 3), |
415 | }; |
416 | |
417 | static inline struct da903x_regulator_info *find_regulator_info(int id) |
418 | { |
419 | struct da903x_regulator_info *ri; |
420 | int i; |
421 | |
422 | for (i = 0; i < ARRAY_SIZE(da903x_regulator_info); i++) { |
423 | ri = &da903x_regulator_info[i]; |
424 | if (ri->desc.id == id) |
425 | return ri; |
426 | } |
427 | return NULL; |
428 | } |
429 | |
430 | static int da903x_regulator_probe(struct platform_device *pdev) |
431 | { |
432 | struct da903x_regulator_info *ri = NULL; |
433 | struct regulator_dev *rdev; |
434 | struct regulator_config config = { }; |
435 | |
436 | ri = find_regulator_info(id: pdev->id); |
437 | if (ri == NULL) { |
438 | dev_err(&pdev->dev, "invalid regulator ID specified\n" ); |
439 | return -EINVAL; |
440 | } |
441 | |
442 | /* Workaround for the weird LDO12 voltage setting */ |
443 | if (ri->desc.id == DA9034_ID_LDO12) { |
444 | ri->desc.ops = &da9034_regulator_ldo12_ops; |
445 | ri->desc.n_voltages = 16; |
446 | ri->desc.linear_ranges = da9034_ldo12_ranges; |
447 | ri->desc.n_linear_ranges = ARRAY_SIZE(da9034_ldo12_ranges); |
448 | } |
449 | |
450 | if (ri->desc.id == DA9030_ID_LDO14) |
451 | ri->desc.ops = &da9030_regulator_ldo14_ops; |
452 | |
453 | if (ri->desc.id == DA9030_ID_LDO1 || ri->desc.id == DA9030_ID_LDO15) |
454 | ri->desc.ops = &da9030_regulator_ldo1_15_ops; |
455 | |
456 | config.dev = &pdev->dev; |
457 | config.init_data = dev_get_platdata(dev: &pdev->dev); |
458 | config.driver_data = ri; |
459 | |
460 | rdev = devm_regulator_register(dev: &pdev->dev, regulator_desc: &ri->desc, config: &config); |
461 | if (IS_ERR(ptr: rdev)) { |
462 | dev_err(&pdev->dev, "failed to register regulator %s\n" , |
463 | ri->desc.name); |
464 | return PTR_ERR(ptr: rdev); |
465 | } |
466 | |
467 | platform_set_drvdata(pdev, data: rdev); |
468 | return 0; |
469 | } |
470 | |
471 | static struct platform_driver da903x_regulator_driver = { |
472 | .driver = { |
473 | .name = "da903x-regulator" , |
474 | .probe_type = PROBE_PREFER_ASYNCHRONOUS, |
475 | }, |
476 | .probe = da903x_regulator_probe, |
477 | }; |
478 | |
479 | static int __init da903x_regulator_init(void) |
480 | { |
481 | return platform_driver_register(&da903x_regulator_driver); |
482 | } |
483 | subsys_initcall(da903x_regulator_init); |
484 | |
485 | static void __exit da903x_regulator_exit(void) |
486 | { |
487 | platform_driver_unregister(&da903x_regulator_driver); |
488 | } |
489 | module_exit(da903x_regulator_exit); |
490 | |
491 | MODULE_LICENSE("GPL" ); |
492 | MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>" |
493 | "Mike Rapoport <mike@compulab.co.il>" ); |
494 | MODULE_DESCRIPTION("Regulator Driver for Dialog Semiconductor DA903X PMIC" ); |
495 | MODULE_ALIAS("platform:da903x-regulator" ); |
496 | |