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f6130be6 AJ |
1 | /* |
2 | * Regulator driver for DA9055 PMIC | |
3 | * | |
4 | * Copyright(c) 2012 Dialog Semiconductor Ltd. | |
5 | * | |
6 | * Author: David Dajun Chen <dchen@diasemi.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | */ | |
14 | ||
15 | #include <linux/module.h> | |
16 | #include <linux/init.h> | |
17 | #include <linux/err.h> | |
18 | #include <linux/gpio.h> | |
19 | #include <linux/platform_device.h> | |
20 | #include <linux/regulator/driver.h> | |
21 | #include <linux/regulator/machine.h> | |
22 | ||
23 | #include <linux/mfd/da9055/core.h> | |
24 | #include <linux/mfd/da9055/reg.h> | |
25 | #include <linux/mfd/da9055/pdata.h> | |
26 | ||
27 | #define DA9055_MIN_UA 0 | |
28 | #define DA9055_MAX_UA 3 | |
29 | ||
30 | #define DA9055_LDO_MODE_SYNC 0 | |
31 | #define DA9055_LDO_MODE_SLEEP 1 | |
32 | ||
33 | #define DA9055_BUCK_MODE_SLEEP 1 | |
34 | #define DA9055_BUCK_MODE_SYNC 2 | |
35 | #define DA9055_BUCK_MODE_AUTO 3 | |
36 | ||
37 | /* DA9055 REGULATOR IDs */ | |
38 | #define DA9055_ID_BUCK1 0 | |
39 | #define DA9055_ID_BUCK2 1 | |
40 | #define DA9055_ID_LDO1 2 | |
41 | #define DA9055_ID_LDO2 3 | |
42 | #define DA9055_ID_LDO3 4 | |
43 | #define DA9055_ID_LDO4 5 | |
44 | #define DA9055_ID_LDO5 6 | |
45 | #define DA9055_ID_LDO6 7 | |
46 | ||
47 | /* DA9055 BUCK current limit */ | |
48 | static const int da9055_current_limits[] = { 500000, 600000, 700000, 800000 }; | |
49 | ||
50 | struct da9055_conf_reg { | |
51 | int reg; | |
52 | int sel_mask; | |
53 | int en_mask; | |
54 | }; | |
55 | ||
56 | struct da9055_volt_reg { | |
57 | int reg_a; | |
58 | int reg_b; | |
59 | int sl_shift; | |
f6130be6 | 60 | int v_mask; |
f6130be6 AJ |
61 | }; |
62 | ||
63 | struct da9055_mode_reg { | |
64 | int reg; | |
65 | int mask; | |
66 | int shift; | |
67 | }; | |
68 | ||
69 | struct da9055_regulator_info { | |
70 | struct regulator_desc reg_desc; | |
71 | struct da9055_conf_reg conf; | |
72 | struct da9055_volt_reg volt; | |
73 | struct da9055_mode_reg mode; | |
74 | }; | |
75 | ||
76 | struct da9055_regulator { | |
77 | struct da9055 *da9055; | |
78 | struct da9055_regulator_info *info; | |
79 | struct regulator_dev *rdev; | |
80 | enum gpio_select reg_rselect; | |
81 | }; | |
82 | ||
83 | static unsigned int da9055_buck_get_mode(struct regulator_dev *rdev) | |
84 | { | |
85 | struct da9055_regulator *regulator = rdev_get_drvdata(rdev); | |
86 | struct da9055_regulator_info *info = regulator->info; | |
87 | int ret, mode = 0; | |
88 | ||
89 | ret = da9055_reg_read(regulator->da9055, info->mode.reg); | |
90 | if (ret < 0) | |
91 | return ret; | |
92 | ||
93 | switch ((ret & info->mode.mask) >> info->mode.shift) { | |
94 | case DA9055_BUCK_MODE_SYNC: | |
95 | mode = REGULATOR_MODE_FAST; | |
96 | break; | |
97 | case DA9055_BUCK_MODE_AUTO: | |
98 | mode = REGULATOR_MODE_NORMAL; | |
99 | break; | |
100 | case DA9055_BUCK_MODE_SLEEP: | |
101 | mode = REGULATOR_MODE_STANDBY; | |
102 | break; | |
103 | } | |
104 | ||
105 | return mode; | |
106 | } | |
107 | ||
108 | static int da9055_buck_set_mode(struct regulator_dev *rdev, | |
109 | unsigned int mode) | |
110 | { | |
111 | struct da9055_regulator *regulator = rdev_get_drvdata(rdev); | |
112 | struct da9055_regulator_info *info = regulator->info; | |
113 | int val = 0; | |
114 | ||
115 | switch (mode) { | |
116 | case REGULATOR_MODE_FAST: | |
117 | val = DA9055_BUCK_MODE_SYNC << info->mode.shift; | |
118 | break; | |
119 | case REGULATOR_MODE_NORMAL: | |
120 | val = DA9055_BUCK_MODE_AUTO << info->mode.shift; | |
121 | break; | |
122 | case REGULATOR_MODE_STANDBY: | |
123 | val = DA9055_BUCK_MODE_SLEEP << info->mode.shift; | |
124 | break; | |
125 | } | |
126 | ||
127 | return da9055_reg_update(regulator->da9055, info->mode.reg, | |
128 | info->mode.mask, val); | |
129 | } | |
130 | ||
131 | static unsigned int da9055_ldo_get_mode(struct regulator_dev *rdev) | |
132 | { | |
133 | struct da9055_regulator *regulator = rdev_get_drvdata(rdev); | |
134 | struct da9055_regulator_info *info = regulator->info; | |
135 | int ret; | |
136 | ||
137 | ret = da9055_reg_read(regulator->da9055, info->volt.reg_b); | |
138 | if (ret < 0) | |
139 | return ret; | |
140 | ||
141 | if (ret >> info->volt.sl_shift) | |
142 | return REGULATOR_MODE_STANDBY; | |
143 | else | |
144 | return REGULATOR_MODE_NORMAL; | |
145 | } | |
146 | ||
147 | static int da9055_ldo_set_mode(struct regulator_dev *rdev, unsigned int mode) | |
148 | { | |
149 | struct da9055_regulator *regulator = rdev_get_drvdata(rdev); | |
150 | struct da9055_regulator_info *info = regulator->info; | |
151 | struct da9055_volt_reg volt = info->volt; | |
152 | int val = 0; | |
153 | ||
154 | switch (mode) { | |
155 | case REGULATOR_MODE_NORMAL: | |
156 | case REGULATOR_MODE_FAST: | |
157 | val = DA9055_LDO_MODE_SYNC; | |
158 | break; | |
159 | case REGULATOR_MODE_STANDBY: | |
160 | val = DA9055_LDO_MODE_SLEEP; | |
161 | break; | |
162 | } | |
163 | ||
164 | return da9055_reg_update(regulator->da9055, volt.reg_b, | |
165 | 1 << volt.sl_shift, | |
166 | val << volt.sl_shift); | |
167 | } | |
168 | ||
169 | static int da9055_buck_get_current_limit(struct regulator_dev *rdev) | |
170 | { | |
171 | struct da9055_regulator *regulator = rdev_get_drvdata(rdev); | |
172 | struct da9055_regulator_info *info = regulator->info; | |
173 | int ret; | |
174 | ||
175 | ret = da9055_reg_read(regulator->da9055, DA9055_REG_BUCK_LIM); | |
176 | if (ret < 0) | |
177 | return ret; | |
178 | ||
179 | ret &= info->mode.mask; | |
180 | return da9055_current_limits[ret >> info->mode.shift]; | |
181 | } | |
182 | ||
183 | static int da9055_buck_set_current_limit(struct regulator_dev *rdev, int min_uA, | |
184 | int max_uA) | |
185 | { | |
186 | struct da9055_regulator *regulator = rdev_get_drvdata(rdev); | |
187 | struct da9055_regulator_info *info = regulator->info; | |
f509fd46 AL |
188 | int i; |
189 | ||
190 | for (i = ARRAY_SIZE(da9055_current_limits) - 1; i >= 0; i--) { | |
191 | if ((min_uA <= da9055_current_limits[i]) && | |
192 | (da9055_current_limits[i] <= max_uA)) | |
193 | return da9055_reg_update(regulator->da9055, | |
194 | DA9055_REG_BUCK_LIM, | |
195 | info->mode.mask, | |
196 | i << info->mode.shift); | |
f6130be6 AJ |
197 | } |
198 | ||
f509fd46 | 199 | return -EINVAL; |
f6130be6 AJ |
200 | } |
201 | ||
202 | static int da9055_regulator_get_voltage_sel(struct regulator_dev *rdev) | |
203 | { | |
204 | struct da9055_regulator *regulator = rdev_get_drvdata(rdev); | |
205 | struct da9055_regulator_info *info = regulator->info; | |
206 | struct da9055_volt_reg volt = info->volt; | |
207 | int ret, sel; | |
208 | ||
209 | /* | |
210 | * There are two voltage register set A & B for voltage ramping but | |
211 | * either one of then can be active therefore we first determine | |
212 | * the active register set. | |
213 | */ | |
214 | ret = da9055_reg_read(regulator->da9055, info->conf.reg); | |
215 | if (ret < 0) | |
216 | return ret; | |
217 | ||
218 | ret &= info->conf.sel_mask; | |
219 | ||
220 | /* Get the voltage for the active register set A/B */ | |
221 | if (ret == DA9055_REGUALTOR_SET_A) | |
222 | ret = da9055_reg_read(regulator->da9055, volt.reg_a); | |
223 | else | |
224 | ret = da9055_reg_read(regulator->da9055, volt.reg_b); | |
225 | ||
226 | if (ret < 0) | |
227 | return ret; | |
228 | ||
229 | sel = (ret & volt.v_mask); | |
6b1f8a45 | 230 | return sel; |
f6130be6 AJ |
231 | } |
232 | ||
f6130be6 AJ |
233 | static int da9055_regulator_set_voltage_sel(struct regulator_dev *rdev, |
234 | unsigned int selector) | |
235 | { | |
236 | struct da9055_regulator *regulator = rdev_get_drvdata(rdev); | |
237 | struct da9055_regulator_info *info = regulator->info; | |
238 | int ret; | |
239 | ||
240 | /* | |
241 | * Regulator register set A/B is not selected through GPIO therefore | |
242 | * we use default register set A for voltage ramping. | |
243 | */ | |
244 | if (regulator->reg_rselect == NO_GPIO) { | |
245 | /* Select register set A */ | |
246 | ret = da9055_reg_update(regulator->da9055, info->conf.reg, | |
247 | info->conf.sel_mask, DA9055_SEL_REG_A); | |
248 | if (ret < 0) | |
249 | return ret; | |
250 | ||
251 | /* Set the voltage */ | |
369cf602 AL |
252 | return da9055_reg_update(regulator->da9055, info->volt.reg_a, |
253 | info->volt.v_mask, selector); | |
f6130be6 AJ |
254 | } |
255 | ||
256 | /* | |
257 | * Here regulator register set A/B is selected through GPIO. | |
258 | * Therefore we first determine the selected register set A/B and | |
259 | * then set the desired voltage for that register set A/B. | |
260 | */ | |
261 | ret = da9055_reg_read(regulator->da9055, info->conf.reg); | |
262 | if (ret < 0) | |
263 | return ret; | |
264 | ||
265 | ret &= info->conf.sel_mask; | |
266 | ||
267 | /* Set the voltage */ | |
268 | if (ret == DA9055_REGUALTOR_SET_A) | |
369cf602 AL |
269 | return da9055_reg_update(regulator->da9055, info->volt.reg_a, |
270 | info->volt.v_mask, selector); | |
f6130be6 | 271 | else |
369cf602 AL |
272 | return da9055_reg_update(regulator->da9055, info->volt.reg_b, |
273 | info->volt.v_mask, selector); | |
f6130be6 AJ |
274 | } |
275 | ||
276 | static int da9055_regulator_set_suspend_voltage(struct regulator_dev *rdev, | |
277 | int uV) | |
278 | { | |
279 | struct da9055_regulator *regulator = rdev_get_drvdata(rdev); | |
280 | struct da9055_regulator_info *info = regulator->info; | |
281 | int ret; | |
282 | ||
283 | /* Select register set B for suspend voltage ramping. */ | |
284 | if (regulator->reg_rselect == NO_GPIO) { | |
285 | ret = da9055_reg_update(regulator->da9055, info->conf.reg, | |
286 | info->conf.sel_mask, DA9055_SEL_REG_B); | |
287 | if (ret < 0) | |
288 | return ret; | |
289 | } | |
290 | ||
6b1f8a45 | 291 | ret = regulator_map_voltage_linear(rdev, uV, uV); |
f6130be6 AJ |
292 | if (ret < 0) |
293 | return ret; | |
294 | ||
369cf602 AL |
295 | return da9055_reg_update(regulator->da9055, info->volt.reg_b, |
296 | info->volt.v_mask, ret); | |
f6130be6 AJ |
297 | } |
298 | ||
299 | static int da9055_suspend_enable(struct regulator_dev *rdev) | |
300 | { | |
301 | struct da9055_regulator *regulator = rdev_get_drvdata(rdev); | |
302 | struct da9055_regulator_info *info = regulator->info; | |
303 | ||
304 | /* Select register set B for voltage ramping. */ | |
305 | if (regulator->reg_rselect == NO_GPIO) | |
306 | return da9055_reg_update(regulator->da9055, info->conf.reg, | |
307 | info->conf.sel_mask, DA9055_SEL_REG_B); | |
308 | else | |
309 | return 0; | |
310 | } | |
311 | ||
312 | static int da9055_suspend_disable(struct regulator_dev *rdev) | |
313 | { | |
314 | struct da9055_regulator *regulator = rdev_get_drvdata(rdev); | |
315 | struct da9055_regulator_info *info = regulator->info; | |
316 | ||
317 | /* Diselect register set B. */ | |
318 | if (regulator->reg_rselect == NO_GPIO) | |
319 | return da9055_reg_update(regulator->da9055, info->conf.reg, | |
320 | info->conf.sel_mask, DA9055_SEL_REG_A); | |
321 | else | |
322 | return 0; | |
323 | } | |
324 | ||
325 | static struct regulator_ops da9055_buck_ops = { | |
326 | .get_mode = da9055_buck_get_mode, | |
327 | .set_mode = da9055_buck_set_mode, | |
328 | ||
329 | .get_current_limit = da9055_buck_get_current_limit, | |
330 | .set_current_limit = da9055_buck_set_current_limit, | |
331 | ||
332 | .get_voltage_sel = da9055_regulator_get_voltage_sel, | |
333 | .set_voltage_sel = da9055_regulator_set_voltage_sel, | |
6b1f8a45 AL |
334 | .list_voltage = regulator_list_voltage_linear, |
335 | .map_voltage = regulator_map_voltage_linear, | |
f6130be6 AJ |
336 | .is_enabled = regulator_is_enabled_regmap, |
337 | .enable = regulator_enable_regmap, | |
338 | .disable = regulator_disable_regmap, | |
339 | ||
340 | .set_suspend_voltage = da9055_regulator_set_suspend_voltage, | |
341 | .set_suspend_enable = da9055_suspend_enable, | |
342 | .set_suspend_disable = da9055_suspend_disable, | |
343 | .set_suspend_mode = da9055_buck_set_mode, | |
344 | }; | |
345 | ||
346 | static struct regulator_ops da9055_ldo_ops = { | |
347 | .get_mode = da9055_ldo_get_mode, | |
348 | .set_mode = da9055_ldo_set_mode, | |
349 | ||
350 | .get_voltage_sel = da9055_regulator_get_voltage_sel, | |
351 | .set_voltage_sel = da9055_regulator_set_voltage_sel, | |
6b1f8a45 AL |
352 | .list_voltage = regulator_list_voltage_linear, |
353 | .map_voltage = regulator_map_voltage_linear, | |
f6130be6 AJ |
354 | .is_enabled = regulator_is_enabled_regmap, |
355 | .enable = regulator_enable_regmap, | |
356 | .disable = regulator_disable_regmap, | |
357 | ||
358 | .set_suspend_voltage = da9055_regulator_set_suspend_voltage, | |
359 | .set_suspend_enable = da9055_suspend_enable, | |
360 | .set_suspend_disable = da9055_suspend_disable, | |
361 | .set_suspend_mode = da9055_ldo_set_mode, | |
362 | ||
363 | }; | |
364 | ||
365 | #define DA9055_LDO(_id, step, min, max, vbits, voffset) \ | |
366 | {\ | |
367 | .reg_desc = {\ | |
368 | .name = #_id,\ | |
369 | .ops = &da9055_ldo_ops,\ | |
370 | .type = REGULATOR_VOLTAGE,\ | |
371 | .id = DA9055_ID_##_id,\ | |
369cf602 | 372 | .n_voltages = (max - min) / step + 1 + (voffset), \ |
f6130be6 AJ |
373 | .enable_reg = DA9055_REG_BCORE_CONT + DA9055_ID_##_id, \ |
374 | .enable_mask = 1, \ | |
375 | .min_uV = (min) * 1000,\ | |
376 | .uV_step = (step) * 1000,\ | |
6b1f8a45 | 377 | .linear_min_sel = (voffset),\ |
f6130be6 AJ |
378 | .owner = THIS_MODULE,\ |
379 | },\ | |
380 | .conf = {\ | |
381 | .reg = DA9055_REG_BCORE_CONT + DA9055_ID_##_id, \ | |
382 | .sel_mask = (1 << 4),\ | |
383 | .en_mask = 1,\ | |
384 | },\ | |
385 | .volt = {\ | |
386 | .reg_a = DA9055_REG_VBCORE_A + DA9055_ID_##_id, \ | |
387 | .reg_b = DA9055_REG_VBCORE_B + DA9055_ID_##_id, \ | |
388 | .sl_shift = 7,\ | |
f6130be6 | 389 | .v_mask = (1 << (vbits)) - 1,\ |
f6130be6 AJ |
390 | },\ |
391 | } | |
392 | ||
393 | #define DA9055_BUCK(_id, step, min, max, vbits, voffset, mbits, sbits) \ | |
394 | {\ | |
395 | .reg_desc = {\ | |
396 | .name = #_id,\ | |
397 | .ops = &da9055_buck_ops,\ | |
398 | .type = REGULATOR_VOLTAGE,\ | |
399 | .id = DA9055_ID_##_id,\ | |
369cf602 | 400 | .n_voltages = (max - min) / step + 1 + (voffset), \ |
f6130be6 AJ |
401 | .enable_reg = DA9055_REG_BCORE_CONT + DA9055_ID_##_id, \ |
402 | .enable_mask = 1,\ | |
403 | .min_uV = (min) * 1000,\ | |
404 | .uV_step = (step) * 1000,\ | |
6b1f8a45 | 405 | .linear_min_sel = (voffset),\ |
f6130be6 AJ |
406 | .owner = THIS_MODULE,\ |
407 | },\ | |
408 | .conf = {\ | |
409 | .reg = DA9055_REG_BCORE_CONT + DA9055_ID_##_id, \ | |
410 | .sel_mask = (1 << 4),\ | |
411 | .en_mask = 1,\ | |
412 | },\ | |
413 | .volt = {\ | |
414 | .reg_a = DA9055_REG_VBCORE_A + DA9055_ID_##_id, \ | |
415 | .reg_b = DA9055_REG_VBCORE_B + DA9055_ID_##_id, \ | |
416 | .sl_shift = 7,\ | |
f6130be6 | 417 | .v_mask = (1 << (vbits)) - 1,\ |
f6130be6 AJ |
418 | },\ |
419 | .mode = {\ | |
420 | .reg = DA9055_REG_BCORE_MODE,\ | |
421 | .mask = (mbits),\ | |
422 | .shift = (sbits),\ | |
423 | },\ | |
424 | } | |
425 | ||
426 | static struct da9055_regulator_info da9055_regulator_info[] = { | |
427 | DA9055_BUCK(BUCK1, 25, 725, 2075, 6, 9, 0xc, 2), | |
428 | DA9055_BUCK(BUCK2, 25, 925, 2500, 6, 0, 3, 0), | |
429 | DA9055_LDO(LDO1, 50, 900, 3300, 6, 2), | |
430 | DA9055_LDO(LDO2, 50, 900, 3300, 6, 3), | |
431 | DA9055_LDO(LDO3, 50, 900, 3300, 6, 2), | |
432 | DA9055_LDO(LDO4, 50, 900, 3300, 6, 2), | |
433 | DA9055_LDO(LDO5, 50, 900, 2750, 6, 2), | |
434 | DA9055_LDO(LDO6, 20, 900, 3300, 7, 0), | |
435 | }; | |
436 | ||
437 | /* | |
438 | * Configures regulator to be controlled either through GPIO 1 or 2. | |
439 | * GPIO can control regulator state and/or select the regulator register | |
440 | * set A/B for voltage ramping. | |
441 | */ | |
3d68dfe3 GKH |
442 | static int da9055_gpio_init(struct da9055_regulator *regulator, |
443 | struct regulator_config *config, | |
444 | struct da9055_pdata *pdata, int id) | |
f6130be6 AJ |
445 | { |
446 | struct da9055_regulator_info *info = regulator->info; | |
447 | int ret = 0; | |
448 | ||
449 | if (pdata->gpio_ren && pdata->gpio_ren[id]) { | |
450 | char name[18]; | |
451 | int gpio_mux = pdata->gpio_ren[id]; | |
452 | ||
453 | config->ena_gpio = pdata->ena_gpio[id]; | |
454 | config->ena_gpio_flags = GPIOF_OUT_INIT_HIGH; | |
455 | config->ena_gpio_invert = 1; | |
456 | ||
457 | /* | |
458 | * GPI pin is muxed with regulator to control the | |
459 | * regulator state. | |
460 | */ | |
461 | sprintf(name, "DA9055 GPI %d", gpio_mux); | |
462 | ret = devm_gpio_request_one(config->dev, gpio_mux, GPIOF_DIR_IN, | |
463 | name); | |
464 | if (ret < 0) | |
465 | goto err; | |
466 | ||
467 | /* | |
468 | * Let the regulator know that its state is controlled | |
469 | * through GPI. | |
470 | */ | |
471 | ret = da9055_reg_update(regulator->da9055, info->conf.reg, | |
472 | DA9055_E_GPI_MASK, | |
473 | pdata->reg_ren[id] | |
474 | << DA9055_E_GPI_SHIFT); | |
475 | if (ret < 0) | |
476 | goto err; | |
477 | } | |
478 | ||
26cbd307 | 479 | if (pdata->gpio_rsel && pdata->gpio_rsel[id]) { |
f6130be6 AJ |
480 | char name[18]; |
481 | int gpio_mux = pdata->gpio_rsel[id]; | |
482 | ||
483 | regulator->reg_rselect = pdata->reg_rsel[id]; | |
484 | ||
485 | /* | |
486 | * GPI pin is muxed with regulator to select the | |
487 | * regulator register set A/B for voltage ramping. | |
488 | */ | |
489 | sprintf(name, "DA9055 GPI %d", gpio_mux); | |
490 | ret = devm_gpio_request_one(config->dev, gpio_mux, GPIOF_DIR_IN, | |
491 | name); | |
492 | if (ret < 0) | |
493 | goto err; | |
494 | ||
495 | /* | |
496 | * Let the regulator know that its register set A/B | |
497 | * will be selected through GPI for voltage ramping. | |
498 | */ | |
499 | ret = da9055_reg_update(regulator->da9055, info->conf.reg, | |
500 | DA9055_V_GPI_MASK, | |
501 | pdata->reg_rsel[id] | |
502 | << DA9055_V_GPI_SHIFT); | |
503 | } | |
504 | ||
505 | err: | |
506 | return ret; | |
507 | } | |
508 | ||
509 | static irqreturn_t da9055_ldo5_6_oc_irq(int irq, void *data) | |
510 | { | |
511 | struct da9055_regulator *regulator = data; | |
512 | ||
513 | regulator_notifier_call_chain(regulator->rdev, | |
514 | REGULATOR_EVENT_OVER_CURRENT, NULL); | |
515 | ||
516 | return IRQ_HANDLED; | |
517 | } | |
518 | ||
519 | static inline struct da9055_regulator_info *find_regulator_info(int id) | |
520 | { | |
521 | struct da9055_regulator_info *info; | |
522 | int i; | |
523 | ||
524 | for (i = 0; i < ARRAY_SIZE(da9055_regulator_info); i++) { | |
525 | info = &da9055_regulator_info[i]; | |
526 | if (info->reg_desc.id == id) | |
527 | return info; | |
528 | } | |
529 | ||
530 | return NULL; | |
531 | } | |
532 | ||
3d68dfe3 | 533 | static int da9055_regulator_probe(struct platform_device *pdev) |
f6130be6 AJ |
534 | { |
535 | struct regulator_config config = { }; | |
536 | struct da9055_regulator *regulator; | |
537 | struct da9055 *da9055 = dev_get_drvdata(pdev->dev.parent); | |
dff91d0b | 538 | struct da9055_pdata *pdata = dev_get_platdata(da9055->dev); |
f6130be6 AJ |
539 | int ret, irq; |
540 | ||
541 | if (pdata == NULL || pdata->regulators[pdev->id] == NULL) | |
542 | return -ENODEV; | |
543 | ||
544 | regulator = devm_kzalloc(&pdev->dev, sizeof(struct da9055_regulator), | |
545 | GFP_KERNEL); | |
546 | if (!regulator) | |
547 | return -ENOMEM; | |
548 | ||
549 | regulator->info = find_regulator_info(pdev->id); | |
550 | if (regulator->info == NULL) { | |
551 | dev_err(&pdev->dev, "invalid regulator ID specified\n"); | |
552 | return -EINVAL; | |
553 | } | |
554 | ||
555 | regulator->da9055 = da9055; | |
556 | config.dev = &pdev->dev; | |
557 | config.driver_data = regulator; | |
558 | config.regmap = da9055->regmap; | |
559 | ||
560 | if (pdata && pdata->regulators) | |
561 | config.init_data = pdata->regulators[pdev->id]; | |
562 | ||
563 | ret = da9055_gpio_init(regulator, &config, pdata, pdev->id); | |
564 | if (ret < 0) | |
565 | return ret; | |
566 | ||
0d328806 AL |
567 | regulator->rdev = devm_regulator_register(&pdev->dev, |
568 | ®ulator->info->reg_desc, | |
569 | &config); | |
f6130be6 AJ |
570 | if (IS_ERR(regulator->rdev)) { |
571 | dev_err(&pdev->dev, "Failed to register regulator %s\n", | |
572 | regulator->info->reg_desc.name); | |
0d328806 | 573 | return PTR_ERR(regulator->rdev); |
f6130be6 AJ |
574 | } |
575 | ||
576 | /* Only LDO 5 and 6 has got the over current interrupt */ | |
577 | if (pdev->id == DA9055_ID_LDO5 || pdev->id == DA9055_ID_LDO6) { | |
578 | irq = platform_get_irq_byname(pdev, "REGULATOR"); | |
f17083c3 AT |
579 | if (irq < 0) |
580 | return irq; | |
581 | ||
f6130be6 AJ |
582 | ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, |
583 | da9055_ldo5_6_oc_irq, | |
584 | IRQF_TRIGGER_HIGH | | |
585 | IRQF_ONESHOT | | |
586 | IRQF_PROBE_SHARED, | |
587 | pdev->name, regulator); | |
588 | if (ret != 0) { | |
589 | if (ret != -EBUSY) { | |
590 | dev_err(&pdev->dev, | |
591 | "Failed to request Regulator IRQ %d: %d\n", | |
592 | irq, ret); | |
0d328806 | 593 | return ret; |
f6130be6 AJ |
594 | } |
595 | } | |
596 | } | |
597 | ||
598 | platform_set_drvdata(pdev, regulator); | |
599 | ||
f6130be6 AJ |
600 | return 0; |
601 | } | |
602 | ||
603 | static struct platform_driver da9055_regulator_driver = { | |
604 | .probe = da9055_regulator_probe, | |
f6130be6 AJ |
605 | .driver = { |
606 | .name = "da9055-regulator", | |
607 | .owner = THIS_MODULE, | |
608 | }, | |
609 | }; | |
610 | ||
611 | static int __init da9055_regulator_init(void) | |
612 | { | |
613 | return platform_driver_register(&da9055_regulator_driver); | |
614 | } | |
615 | subsys_initcall(da9055_regulator_init); | |
616 | ||
617 | static void __exit da9055_regulator_exit(void) | |
618 | { | |
619 | platform_driver_unregister(&da9055_regulator_driver); | |
620 | } | |
621 | module_exit(da9055_regulator_exit); | |
622 | ||
623 | MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>"); | |
624 | MODULE_DESCRIPTION("Power Regulator driver for Dialog DA9055 PMIC"); | |
625 | MODULE_LICENSE("GPL"); | |
626 | MODULE_ALIAS("platform:da9055-regulator"); |