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b0902bbe | 1 | /* |
8a82b408 | 2 | * max14577.c - Regulator driver for the Maxim 14577/77836 |
b0902bbe | 3 | * |
4d047d6c | 4 | * Copyright (C) 2013,2014 Samsung Electronics |
b0902bbe KK |
5 | * Krzysztof Kozlowski <k.kozlowski@samsung.com> |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | */ | |
17 | ||
18 | #include <linux/module.h> | |
19 | #include <linux/platform_device.h> | |
20 | #include <linux/regulator/driver.h> | |
21 | #include <linux/mfd/max14577.h> | |
22 | #include <linux/mfd/max14577-private.h> | |
23 | #include <linux/regulator/of_regulator.h> | |
24 | ||
8a82b408 KK |
25 | /* |
26 | * Valid limits of current for max14577 and max77836 chargers. | |
27 | * They must correspond to MBCICHWRCL and MBCICHWRCH fields in CHGCTRL4 | |
28 | * register for given chipset. | |
29 | */ | |
30 | struct maxim_charger_current { | |
31 | /* Minimal current, set in CHGCTRL4/MBCICHWRCL, uA */ | |
32 | unsigned int min; | |
33 | /* | |
34 | * Minimal current when high setting is active, | |
35 | * set in CHGCTRL4/MBCICHWRCH, uA | |
36 | */ | |
37 | unsigned int high_start; | |
38 | /* Value of one step in high setting, uA */ | |
39 | unsigned int high_step; | |
40 | /* Maximum current of high setting, uA */ | |
41 | unsigned int max; | |
42 | }; | |
43 | ||
44 | /* Table of valid charger currents for different Maxim chipsets */ | |
45 | static const struct maxim_charger_current maxim_charger_currents[] = { | |
46 | [MAXIM_DEVICE_TYPE_UNKNOWN] = { 0, 0, 0, 0 }, | |
47 | [MAXIM_DEVICE_TYPE_MAX14577] = { | |
48 | .min = MAX14577_REGULATOR_CURRENT_LIMIT_MIN, | |
49 | .high_start = MAX14577_REGULATOR_CURRENT_LIMIT_HIGH_START, | |
50 | .high_step = MAX14577_REGULATOR_CURRENT_LIMIT_HIGH_STEP, | |
51 | .max = MAX14577_REGULATOR_CURRENT_LIMIT_MAX, | |
52 | }, | |
53 | [MAXIM_DEVICE_TYPE_MAX77836] = { | |
54 | .min = MAX77836_REGULATOR_CURRENT_LIMIT_MIN, | |
55 | .high_start = MAX77836_REGULATOR_CURRENT_LIMIT_HIGH_START, | |
56 | .high_step = MAX77836_REGULATOR_CURRENT_LIMIT_HIGH_STEP, | |
57 | .max = MAX77836_REGULATOR_CURRENT_LIMIT_MAX, | |
58 | }, | |
59 | }; | |
60 | ||
b0902bbe KK |
61 | static int max14577_reg_is_enabled(struct regulator_dev *rdev) |
62 | { | |
63 | int rid = rdev_get_id(rdev); | |
64 | struct regmap *rmap = rdev->regmap; | |
65 | u8 reg_data; | |
66 | ||
67 | switch (rid) { | |
68 | case MAX14577_CHARGER: | |
69 | max14577_read_reg(rmap, MAX14577_CHG_REG_CHG_CTRL2, ®_data); | |
70 | if ((reg_data & CHGCTRL2_MBCHOSTEN_MASK) == 0) | |
71 | return 0; | |
72 | max14577_read_reg(rmap, MAX14577_CHG_REG_STATUS3, ®_data); | |
73 | if ((reg_data & STATUS3_CGMBC_MASK) == 0) | |
74 | return 0; | |
75 | /* MBCHOSTEN and CGMBC are on */ | |
76 | return 1; | |
77 | default: | |
78 | return -EINVAL; | |
79 | } | |
80 | } | |
81 | ||
82 | static int max14577_reg_get_current_limit(struct regulator_dev *rdev) | |
83 | { | |
84 | u8 reg_data; | |
85 | struct regmap *rmap = rdev->regmap; | |
8a82b408 KK |
86 | struct max14577 *max14577 = rdev_get_drvdata(rdev); |
87 | const struct maxim_charger_current *limits = | |
88 | &maxim_charger_currents[max14577->dev_type]; | |
b0902bbe KK |
89 | |
90 | if (rdev_get_id(rdev) != MAX14577_CHARGER) | |
91 | return -EINVAL; | |
92 | ||
93 | max14577_read_reg(rmap, MAX14577_CHG_REG_CHG_CTRL4, ®_data); | |
94 | ||
95 | if ((reg_data & CHGCTRL4_MBCICHWRCL_MASK) == 0) | |
8a82b408 | 96 | return limits->min; |
b0902bbe KK |
97 | |
98 | reg_data = ((reg_data & CHGCTRL4_MBCICHWRCH_MASK) >> | |
99 | CHGCTRL4_MBCICHWRCH_SHIFT); | |
8a82b408 | 100 | return limits->high_start + reg_data * limits->high_step; |
b0902bbe KK |
101 | } |
102 | ||
103 | static int max14577_reg_set_current_limit(struct regulator_dev *rdev, | |
104 | int min_uA, int max_uA) | |
105 | { | |
106 | int i, current_bits = 0xf; | |
107 | u8 reg_data; | |
8a82b408 KK |
108 | struct max14577 *max14577 = rdev_get_drvdata(rdev); |
109 | const struct maxim_charger_current *limits = | |
110 | &maxim_charger_currents[max14577->dev_type]; | |
b0902bbe KK |
111 | |
112 | if (rdev_get_id(rdev) != MAX14577_CHARGER) | |
113 | return -EINVAL; | |
114 | ||
8a82b408 | 115 | if (min_uA > limits->max || max_uA < limits->min) |
b0902bbe KK |
116 | return -EINVAL; |
117 | ||
8a82b408 KK |
118 | if (max_uA < limits->high_start) { |
119 | /* | |
120 | * Less than high_start, | |
121 | * so set the minimal current (turn only Low Bit off) | |
122 | */ | |
b0902bbe KK |
123 | u8 reg_data = 0x0 << CHGCTRL4_MBCICHWRCL_SHIFT; |
124 | return max14577_update_reg(rdev->regmap, | |
125 | MAX14577_CHG_REG_CHG_CTRL4, | |
126 | CHGCTRL4_MBCICHWRCL_MASK, reg_data); | |
127 | } | |
128 | ||
8a82b408 KK |
129 | /* |
130 | * max_uA is in range: <high_start, inifinite>, so search for | |
131 | * valid current starting from maximum current. | |
132 | */ | |
133 | for (i = limits->max; i >= limits->high_start; i -= limits->high_step) { | |
b0902bbe KK |
134 | if (i <= max_uA) |
135 | break; | |
136 | current_bits--; | |
137 | } | |
138 | BUG_ON(current_bits < 0); /* Cannot happen */ | |
8a82b408 KK |
139 | |
140 | /* Turn Low Bit on (use range high_start-max)... */ | |
b0902bbe KK |
141 | reg_data = 0x1 << CHGCTRL4_MBCICHWRCL_SHIFT; |
142 | /* and set proper High Bits */ | |
143 | reg_data |= current_bits << CHGCTRL4_MBCICHWRCH_SHIFT; | |
144 | ||
145 | return max14577_update_reg(rdev->regmap, MAX14577_CHG_REG_CHG_CTRL4, | |
146 | CHGCTRL4_MBCICHWRCL_MASK | CHGCTRL4_MBCICHWRCH_MASK, | |
147 | reg_data); | |
148 | } | |
149 | ||
150 | static struct regulator_ops max14577_safeout_ops = { | |
151 | .is_enabled = regulator_is_enabled_regmap, | |
152 | .enable = regulator_enable_regmap, | |
153 | .disable = regulator_disable_regmap, | |
154 | .list_voltage = regulator_list_voltage_linear, | |
155 | }; | |
156 | ||
157 | static struct regulator_ops max14577_charger_ops = { | |
158 | .is_enabled = max14577_reg_is_enabled, | |
159 | .enable = regulator_enable_regmap, | |
160 | .disable = regulator_disable_regmap, | |
161 | .get_current_limit = max14577_reg_get_current_limit, | |
162 | .set_current_limit = max14577_reg_set_current_limit, | |
163 | }; | |
164 | ||
8a82b408 | 165 | static const struct regulator_desc max14577_supported_regulators[] = { |
b0902bbe KK |
166 | [MAX14577_SAFEOUT] = { |
167 | .name = "SAFEOUT", | |
168 | .id = MAX14577_SAFEOUT, | |
169 | .ops = &max14577_safeout_ops, | |
170 | .type = REGULATOR_VOLTAGE, | |
171 | .owner = THIS_MODULE, | |
172 | .n_voltages = 1, | |
173 | .min_uV = MAX14577_REGULATOR_SAFEOUT_VOLTAGE, | |
174 | .enable_reg = MAX14577_REG_CONTROL2, | |
175 | .enable_mask = CTRL2_SFOUTORD_MASK, | |
176 | }, | |
177 | [MAX14577_CHARGER] = { | |
178 | .name = "CHARGER", | |
179 | .id = MAX14577_CHARGER, | |
180 | .ops = &max14577_charger_ops, | |
181 | .type = REGULATOR_CURRENT, | |
182 | .owner = THIS_MODULE, | |
183 | .enable_reg = MAX14577_CHG_REG_CHG_CTRL2, | |
184 | .enable_mask = CHGCTRL2_MBCHOSTEN_MASK, | |
185 | }, | |
186 | }; | |
187 | ||
8a82b408 KK |
188 | static struct regulator_ops max77836_ldo_ops = { |
189 | .is_enabled = regulator_is_enabled_regmap, | |
190 | .enable = regulator_enable_regmap, | |
191 | .disable = regulator_disable_regmap, | |
192 | .list_voltage = regulator_list_voltage_linear, | |
193 | .map_voltage = regulator_map_voltage_linear, | |
194 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
195 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
196 | /* TODO: add .set_suspend_mode */ | |
197 | }; | |
198 | ||
199 | static const struct regulator_desc max77836_supported_regulators[] = { | |
200 | [MAX14577_SAFEOUT] = { | |
201 | .name = "SAFEOUT", | |
202 | .id = MAX14577_SAFEOUT, | |
203 | .ops = &max14577_safeout_ops, | |
204 | .type = REGULATOR_VOLTAGE, | |
205 | .owner = THIS_MODULE, | |
206 | .n_voltages = 1, | |
207 | .min_uV = MAX14577_REGULATOR_SAFEOUT_VOLTAGE, | |
208 | .enable_reg = MAX14577_REG_CONTROL2, | |
209 | .enable_mask = CTRL2_SFOUTORD_MASK, | |
210 | }, | |
211 | [MAX14577_CHARGER] = { | |
212 | .name = "CHARGER", | |
213 | .id = MAX14577_CHARGER, | |
214 | .ops = &max14577_charger_ops, | |
215 | .type = REGULATOR_CURRENT, | |
216 | .owner = THIS_MODULE, | |
217 | .enable_reg = MAX14577_CHG_REG_CHG_CTRL2, | |
218 | .enable_mask = CHGCTRL2_MBCHOSTEN_MASK, | |
219 | }, | |
220 | [MAX77836_LDO1] = { | |
221 | .name = "LDO1", | |
222 | .id = MAX77836_LDO1, | |
223 | .ops = &max77836_ldo_ops, | |
224 | .type = REGULATOR_VOLTAGE, | |
225 | .owner = THIS_MODULE, | |
226 | .n_voltages = MAX77836_REGULATOR_LDO_VOLTAGE_STEPS_NUM, | |
227 | .min_uV = MAX77836_REGULATOR_LDO_VOLTAGE_MIN, | |
228 | .uV_step = MAX77836_REGULATOR_LDO_VOLTAGE_STEP, | |
229 | .enable_reg = MAX77836_LDO_REG_CNFG1_LDO1, | |
230 | .enable_mask = MAX77836_CNFG1_LDO_PWRMD_MASK, | |
231 | .vsel_reg = MAX77836_LDO_REG_CNFG1_LDO1, | |
232 | .vsel_mask = MAX77836_CNFG1_LDO_TV_MASK, | |
233 | }, | |
234 | [MAX77836_LDO2] = { | |
235 | .name = "LDO2", | |
236 | .id = MAX77836_LDO2, | |
237 | .ops = &max77836_ldo_ops, | |
238 | .type = REGULATOR_VOLTAGE, | |
239 | .owner = THIS_MODULE, | |
240 | .n_voltages = MAX77836_REGULATOR_LDO_VOLTAGE_STEPS_NUM, | |
241 | .min_uV = MAX77836_REGULATOR_LDO_VOLTAGE_MIN, | |
242 | .uV_step = MAX77836_REGULATOR_LDO_VOLTAGE_STEP, | |
243 | .enable_reg = MAX77836_LDO_REG_CNFG1_LDO2, | |
244 | .enable_mask = MAX77836_CNFG1_LDO_PWRMD_MASK, | |
245 | .vsel_reg = MAX77836_LDO_REG_CNFG1_LDO2, | |
246 | .vsel_mask = MAX77836_CNFG1_LDO_TV_MASK, | |
247 | }, | |
248 | }; | |
249 | ||
b0902bbe KK |
250 | #ifdef CONFIG_OF |
251 | static struct of_regulator_match max14577_regulator_matches[] = { | |
252 | { .name = "SAFEOUT", }, | |
253 | { .name = "CHARGER", }, | |
254 | }; | |
255 | ||
8a82b408 KK |
256 | static struct of_regulator_match max77836_regulator_matches[] = { |
257 | { .name = "SAFEOUT", }, | |
258 | { .name = "CHARGER", }, | |
259 | { .name = "LDO1", }, | |
260 | { .name = "LDO2", }, | |
261 | }; | |
262 | ||
263 | static int max14577_regulator_dt_parse_pdata(struct platform_device *pdev, | |
264 | enum maxim_device_type dev_type) | |
b0902bbe KK |
265 | { |
266 | int ret; | |
267 | struct device_node *np; | |
8a82b408 KK |
268 | struct of_regulator_match *regulator_matches; |
269 | unsigned int regulator_matches_size; | |
b0902bbe KK |
270 | |
271 | np = of_get_child_by_name(pdev->dev.parent->of_node, "regulators"); | |
272 | if (!np) { | |
273 | dev_err(&pdev->dev, "Failed to get child OF node for regulators\n"); | |
274 | return -EINVAL; | |
275 | } | |
276 | ||
8a82b408 KK |
277 | switch (dev_type) { |
278 | case MAXIM_DEVICE_TYPE_MAX77836: | |
279 | regulator_matches = max77836_regulator_matches; | |
280 | regulator_matches_size = ARRAY_SIZE(max77836_regulator_matches); | |
281 | break; | |
282 | case MAXIM_DEVICE_TYPE_MAX14577: | |
283 | default: | |
284 | regulator_matches = max14577_regulator_matches; | |
285 | regulator_matches_size = ARRAY_SIZE(max14577_regulator_matches); | |
286 | } | |
287 | ||
288 | ret = of_regulator_match(&pdev->dev, np, regulator_matches, | |
289 | regulator_matches_size); | |
08221fc4 | 290 | if (ret < 0) |
b0902bbe | 291 | dev_err(&pdev->dev, "Error parsing regulator init data: %d\n", ret); |
08221fc4 KK |
292 | else |
293 | ret = 0; | |
b0902bbe | 294 | |
667a6b7a KK |
295 | of_node_put(np); |
296 | ||
297 | return ret; | |
b0902bbe KK |
298 | } |
299 | ||
8a82b408 KK |
300 | static inline struct regulator_init_data *match_init_data(int index, |
301 | enum maxim_device_type dev_type) | |
b0902bbe | 302 | { |
8a82b408 KK |
303 | switch (dev_type) { |
304 | case MAXIM_DEVICE_TYPE_MAX77836: | |
305 | return max77836_regulator_matches[index].init_data; | |
306 | ||
307 | case MAXIM_DEVICE_TYPE_MAX14577: | |
308 | default: | |
309 | return max14577_regulator_matches[index].init_data; | |
310 | } | |
b0902bbe KK |
311 | } |
312 | ||
8a82b408 KK |
313 | static inline struct device_node *match_of_node(int index, |
314 | enum maxim_device_type dev_type) | |
b0902bbe | 315 | { |
8a82b408 KK |
316 | switch (dev_type) { |
317 | case MAXIM_DEVICE_TYPE_MAX77836: | |
318 | return max77836_regulator_matches[index].of_node; | |
319 | ||
320 | case MAXIM_DEVICE_TYPE_MAX14577: | |
321 | default: | |
322 | return max14577_regulator_matches[index].of_node; | |
323 | } | |
b0902bbe KK |
324 | } |
325 | #else /* CONFIG_OF */ | |
8a82b408 KK |
326 | static int max14577_regulator_dt_parse_pdata(struct platform_device *pdev, |
327 | enum maxim_device_type dev_type) | |
b0902bbe KK |
328 | { |
329 | return 0; | |
330 | } | |
8a82b408 KK |
331 | static inline struct regulator_init_data *match_init_data(int index, |
332 | enum maxim_device_type dev_type) | |
b0902bbe KK |
333 | { |
334 | return NULL; | |
335 | } | |
336 | ||
8a82b408 KK |
337 | static inline struct device_node *match_of_node(int index, |
338 | enum maxim_device_type dev_type) | |
b0902bbe KK |
339 | { |
340 | return NULL; | |
341 | } | |
342 | #endif /* CONFIG_OF */ | |
343 | ||
8a82b408 KK |
344 | /** |
345 | * Registers for regulators of max77836 use different I2C slave addresses so | |
346 | * different regmaps must be used for them. | |
347 | * | |
348 | * Returns proper regmap for accessing regulator passed by id. | |
349 | */ | |
350 | static struct regmap *max14577_get_regmap(struct max14577 *max14577, | |
351 | int reg_id) | |
352 | { | |
353 | switch (max14577->dev_type) { | |
354 | case MAXIM_DEVICE_TYPE_MAX77836: | |
355 | switch (reg_id) { | |
356 | case MAX77836_SAFEOUT ... MAX77836_CHARGER: | |
357 | return max14577->regmap; | |
358 | default: | |
359 | /* MAX77836_LDO1 ... MAX77836_LDO2 */ | |
360 | return max14577->regmap_pmic; | |
361 | } | |
362 | ||
363 | case MAXIM_DEVICE_TYPE_MAX14577: | |
364 | default: | |
365 | return max14577->regmap; | |
366 | } | |
367 | } | |
b0902bbe KK |
368 | |
369 | static int max14577_regulator_probe(struct platform_device *pdev) | |
370 | { | |
371 | struct max14577 *max14577 = dev_get_drvdata(pdev->dev.parent); | |
372 | struct max14577_platform_data *pdata = dev_get_platdata(max14577->dev); | |
373 | int i, ret; | |
374 | struct regulator_config config = {}; | |
8a82b408 KK |
375 | const struct regulator_desc *supported_regulators; |
376 | unsigned int supported_regulators_size; | |
377 | enum maxim_device_type dev_type = max14577->dev_type; | |
b0902bbe | 378 | |
8a82b408 | 379 | ret = max14577_regulator_dt_parse_pdata(pdev, dev_type); |
b0902bbe KK |
380 | if (ret) |
381 | return ret; | |
382 | ||
8a82b408 KK |
383 | switch (dev_type) { |
384 | case MAXIM_DEVICE_TYPE_MAX77836: | |
385 | supported_regulators = max77836_supported_regulators; | |
386 | supported_regulators_size = ARRAY_SIZE(max77836_supported_regulators); | |
387 | break; | |
388 | case MAXIM_DEVICE_TYPE_MAX14577: | |
389 | default: | |
390 | supported_regulators = max14577_supported_regulators; | |
391 | supported_regulators_size = ARRAY_SIZE(max14577_supported_regulators); | |
392 | } | |
393 | ||
b0902bbe | 394 | config.dev = &pdev->dev; |
8a82b408 | 395 | config.driver_data = max14577; |
b0902bbe | 396 | |
8a82b408 | 397 | for (i = 0; i < supported_regulators_size; i++) { |
b0902bbe KK |
398 | struct regulator_dev *regulator; |
399 | /* | |
400 | * Index of supported_regulators[] is also the id and must | |
401 | * match index of pdata->regulators[]. | |
402 | */ | |
403 | if (pdata && pdata->regulators) { | |
404 | config.init_data = pdata->regulators[i].initdata; | |
405 | config.of_node = pdata->regulators[i].of_node; | |
406 | } else { | |
8a82b408 KK |
407 | config.init_data = match_init_data(i, dev_type); |
408 | config.of_node = match_of_node(i, dev_type); | |
b0902bbe | 409 | } |
8a82b408 KK |
410 | config.regmap = max14577_get_regmap(max14577, |
411 | supported_regulators[i].id); | |
b0902bbe KK |
412 | |
413 | regulator = devm_regulator_register(&pdev->dev, | |
414 | &supported_regulators[i], &config); | |
415 | if (IS_ERR(regulator)) { | |
416 | ret = PTR_ERR(regulator); | |
417 | dev_err(&pdev->dev, | |
8a82b408 KK |
418 | "Regulator init failed for %d/%s with error: %d\n", |
419 | i, supported_regulators[i].name, ret); | |
b0902bbe KK |
420 | return ret; |
421 | } | |
422 | } | |
423 | ||
424 | return ret; | |
425 | } | |
426 | ||
8a82b408 KK |
427 | static const struct platform_device_id max14577_regulator_id[] = { |
428 | { "max14577-regulator", MAXIM_DEVICE_TYPE_MAX14577, }, | |
429 | { "max77836-regulator", MAXIM_DEVICE_TYPE_MAX77836, }, | |
430 | { } | |
431 | }; | |
432 | MODULE_DEVICE_TABLE(platform, max14577_regulator_id); | |
433 | ||
b0902bbe KK |
434 | static struct platform_driver max14577_regulator_driver = { |
435 | .driver = { | |
436 | .owner = THIS_MODULE, | |
437 | .name = "max14577-regulator", | |
438 | }, | |
8a82b408 KK |
439 | .probe = max14577_regulator_probe, |
440 | .id_table = max14577_regulator_id, | |
b0902bbe KK |
441 | }; |
442 | ||
443 | static int __init max14577_regulator_init(void) | |
444 | { | |
8a82b408 | 445 | /* Check for valid values for charger */ |
b0902bbe KK |
446 | BUILD_BUG_ON(MAX14577_REGULATOR_CURRENT_LIMIT_HIGH_START + |
447 | MAX14577_REGULATOR_CURRENT_LIMIT_HIGH_STEP * 0xf != | |
448 | MAX14577_REGULATOR_CURRENT_LIMIT_MAX); | |
8a82b408 KK |
449 | BUILD_BUG_ON(MAX77836_REGULATOR_CURRENT_LIMIT_HIGH_START + |
450 | MAX77836_REGULATOR_CURRENT_LIMIT_HIGH_STEP * 0xf != | |
451 | MAX77836_REGULATOR_CURRENT_LIMIT_MAX); | |
452 | /* Valid charger current values must be provided for each chipset */ | |
453 | BUILD_BUG_ON(ARRAY_SIZE(maxim_charger_currents) != MAXIM_DEVICE_TYPE_NUM); | |
454 | ||
455 | BUILD_BUG_ON(ARRAY_SIZE(max14577_supported_regulators) != MAX14577_REGULATOR_NUM); | |
456 | BUILD_BUG_ON(ARRAY_SIZE(max77836_supported_regulators) != MAX77836_REGULATOR_NUM); | |
457 | ||
458 | BUILD_BUG_ON(MAX77836_REGULATOR_LDO_VOLTAGE_MIN + | |
459 | (MAX77836_REGULATOR_LDO_VOLTAGE_STEP * | |
460 | (MAX77836_REGULATOR_LDO_VOLTAGE_STEPS_NUM - 1)) != | |
461 | MAX77836_REGULATOR_LDO_VOLTAGE_MAX); | |
b0902bbe KK |
462 | |
463 | return platform_driver_register(&max14577_regulator_driver); | |
464 | } | |
465 | subsys_initcall(max14577_regulator_init); | |
466 | ||
467 | static void __exit max14577_regulator_exit(void) | |
468 | { | |
469 | platform_driver_unregister(&max14577_regulator_driver); | |
470 | } | |
471 | module_exit(max14577_regulator_exit); | |
472 | ||
473 | MODULE_AUTHOR("Krzysztof Kozlowski <k.kozlowski@samsung.com>"); | |
8a82b408 | 474 | MODULE_DESCRIPTION("Maxim 14577/77836 regulator driver"); |
b0902bbe | 475 | MODULE_LICENSE("GPL"); |
9f45a3dd | 476 | MODULE_ALIAS("platform:max14577-regulator"); |