Commit | Line | Data |
---|---|---|
fd2f02f9 AL |
1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | // | |
3 | // Regulator driver for DA9055 PMIC | |
4 | // | |
5 | // Copyright(c) 2012 Dialog Semiconductor Ltd. | |
6 | // | |
7 | // Author: David Dajun Chen <dchen@diasemi.com> | |
f6130be6 AJ |
8 | |
9 | #include <linux/module.h> | |
10 | #include <linux/init.h> | |
11 | #include <linux/err.h> | |
12 | #include <linux/gpio.h> | |
8d05560d | 13 | #include <linux/gpio/consumer.h> |
f6130be6 AJ |
14 | #include <linux/platform_device.h> |
15 | #include <linux/regulator/driver.h> | |
16 | #include <linux/regulator/machine.h> | |
8b61a28d AT |
17 | #include <linux/of.h> |
18 | #include <linux/regulator/of_regulator.h> | |
f6130be6 AJ |
19 | |
20 | #include <linux/mfd/da9055/core.h> | |
21 | #include <linux/mfd/da9055/reg.h> | |
22 | #include <linux/mfd/da9055/pdata.h> | |
23 | ||
24 | #define DA9055_MIN_UA 0 | |
25 | #define DA9055_MAX_UA 3 | |
26 | ||
27 | #define DA9055_LDO_MODE_SYNC 0 | |
28 | #define DA9055_LDO_MODE_SLEEP 1 | |
29 | ||
30 | #define DA9055_BUCK_MODE_SLEEP 1 | |
31 | #define DA9055_BUCK_MODE_SYNC 2 | |
32 | #define DA9055_BUCK_MODE_AUTO 3 | |
33 | ||
34 | /* DA9055 REGULATOR IDs */ | |
35 | #define DA9055_ID_BUCK1 0 | |
36 | #define DA9055_ID_BUCK2 1 | |
37 | #define DA9055_ID_LDO1 2 | |
38 | #define DA9055_ID_LDO2 3 | |
39 | #define DA9055_ID_LDO3 4 | |
40 | #define DA9055_ID_LDO4 5 | |
41 | #define DA9055_ID_LDO5 6 | |
42 | #define DA9055_ID_LDO6 7 | |
43 | ||
44 | /* DA9055 BUCK current limit */ | |
941666e2 AL |
45 | static const unsigned int da9055_current_limits[] = { |
46 | 500000, 600000, 700000, 800000 | |
47 | }; | |
f6130be6 AJ |
48 | |
49 | struct da9055_conf_reg { | |
50 | int reg; | |
51 | int sel_mask; | |
52 | int en_mask; | |
53 | }; | |
54 | ||
55 | struct da9055_volt_reg { | |
56 | int reg_a; | |
57 | int reg_b; | |
58 | int sl_shift; | |
f6130be6 | 59 | int v_mask; |
f6130be6 AJ |
60 | }; |
61 | ||
62 | struct da9055_mode_reg { | |
63 | int reg; | |
64 | int mask; | |
65 | int shift; | |
66 | }; | |
67 | ||
68 | struct da9055_regulator_info { | |
69 | struct regulator_desc reg_desc; | |
70 | struct da9055_conf_reg conf; | |
71 | struct da9055_volt_reg volt; | |
72 | struct da9055_mode_reg mode; | |
73 | }; | |
74 | ||
75 | struct da9055_regulator { | |
76 | struct da9055 *da9055; | |
77 | struct da9055_regulator_info *info; | |
78 | struct regulator_dev *rdev; | |
79 | enum gpio_select reg_rselect; | |
80 | }; | |
81 | ||
82 | static unsigned int da9055_buck_get_mode(struct regulator_dev *rdev) | |
83 | { | |
84 | struct da9055_regulator *regulator = rdev_get_drvdata(rdev); | |
85 | struct da9055_regulator_info *info = regulator->info; | |
86 | int ret, mode = 0; | |
87 | ||
88 | ret = da9055_reg_read(regulator->da9055, info->mode.reg); | |
89 | if (ret < 0) | |
90 | return ret; | |
91 | ||
92 | switch ((ret & info->mode.mask) >> info->mode.shift) { | |
93 | case DA9055_BUCK_MODE_SYNC: | |
94 | mode = REGULATOR_MODE_FAST; | |
95 | break; | |
96 | case DA9055_BUCK_MODE_AUTO: | |
97 | mode = REGULATOR_MODE_NORMAL; | |
98 | break; | |
99 | case DA9055_BUCK_MODE_SLEEP: | |
100 | mode = REGULATOR_MODE_STANDBY; | |
101 | break; | |
102 | } | |
103 | ||
104 | return mode; | |
105 | } | |
106 | ||
107 | static int da9055_buck_set_mode(struct regulator_dev *rdev, | |
108 | unsigned int mode) | |
109 | { | |
110 | struct da9055_regulator *regulator = rdev_get_drvdata(rdev); | |
111 | struct da9055_regulator_info *info = regulator->info; | |
112 | int val = 0; | |
113 | ||
114 | switch (mode) { | |
115 | case REGULATOR_MODE_FAST: | |
116 | val = DA9055_BUCK_MODE_SYNC << info->mode.shift; | |
117 | break; | |
118 | case REGULATOR_MODE_NORMAL: | |
119 | val = DA9055_BUCK_MODE_AUTO << info->mode.shift; | |
120 | break; | |
121 | case REGULATOR_MODE_STANDBY: | |
122 | val = DA9055_BUCK_MODE_SLEEP << info->mode.shift; | |
123 | break; | |
124 | } | |
125 | ||
126 | return da9055_reg_update(regulator->da9055, info->mode.reg, | |
127 | info->mode.mask, val); | |
128 | } | |
129 | ||
130 | static unsigned int da9055_ldo_get_mode(struct regulator_dev *rdev) | |
131 | { | |
132 | struct da9055_regulator *regulator = rdev_get_drvdata(rdev); | |
133 | struct da9055_regulator_info *info = regulator->info; | |
134 | int ret; | |
135 | ||
136 | ret = da9055_reg_read(regulator->da9055, info->volt.reg_b); | |
137 | if (ret < 0) | |
138 | return ret; | |
139 | ||
140 | if (ret >> info->volt.sl_shift) | |
141 | return REGULATOR_MODE_STANDBY; | |
142 | else | |
143 | return REGULATOR_MODE_NORMAL; | |
144 | } | |
145 | ||
146 | static int da9055_ldo_set_mode(struct regulator_dev *rdev, unsigned int mode) | |
147 | { | |
148 | struct da9055_regulator *regulator = rdev_get_drvdata(rdev); | |
149 | struct da9055_regulator_info *info = regulator->info; | |
150 | struct da9055_volt_reg volt = info->volt; | |
151 | int val = 0; | |
152 | ||
153 | switch (mode) { | |
154 | case REGULATOR_MODE_NORMAL: | |
155 | case REGULATOR_MODE_FAST: | |
156 | val = DA9055_LDO_MODE_SYNC; | |
157 | break; | |
158 | case REGULATOR_MODE_STANDBY: | |
159 | val = DA9055_LDO_MODE_SLEEP; | |
160 | break; | |
161 | } | |
162 | ||
163 | return da9055_reg_update(regulator->da9055, volt.reg_b, | |
164 | 1 << volt.sl_shift, | |
165 | val << volt.sl_shift); | |
166 | } | |
167 | ||
f6130be6 AJ |
168 | static int da9055_regulator_get_voltage_sel(struct regulator_dev *rdev) |
169 | { | |
170 | struct da9055_regulator *regulator = rdev_get_drvdata(rdev); | |
171 | struct da9055_regulator_info *info = regulator->info; | |
172 | struct da9055_volt_reg volt = info->volt; | |
173 | int ret, sel; | |
174 | ||
175 | /* | |
176 | * There are two voltage register set A & B for voltage ramping but | |
177 | * either one of then can be active therefore we first determine | |
178 | * the active register set. | |
179 | */ | |
180 | ret = da9055_reg_read(regulator->da9055, info->conf.reg); | |
181 | if (ret < 0) | |
182 | return ret; | |
183 | ||
184 | ret &= info->conf.sel_mask; | |
185 | ||
186 | /* Get the voltage for the active register set A/B */ | |
187 | if (ret == DA9055_REGUALTOR_SET_A) | |
188 | ret = da9055_reg_read(regulator->da9055, volt.reg_a); | |
189 | else | |
190 | ret = da9055_reg_read(regulator->da9055, volt.reg_b); | |
191 | ||
192 | if (ret < 0) | |
193 | return ret; | |
194 | ||
195 | sel = (ret & volt.v_mask); | |
6b1f8a45 | 196 | return sel; |
f6130be6 AJ |
197 | } |
198 | ||
f6130be6 AJ |
199 | static int da9055_regulator_set_voltage_sel(struct regulator_dev *rdev, |
200 | unsigned int selector) | |
201 | { | |
202 | struct da9055_regulator *regulator = rdev_get_drvdata(rdev); | |
203 | struct da9055_regulator_info *info = regulator->info; | |
204 | int ret; | |
205 | ||
206 | /* | |
207 | * Regulator register set A/B is not selected through GPIO therefore | |
208 | * we use default register set A for voltage ramping. | |
209 | */ | |
210 | if (regulator->reg_rselect == NO_GPIO) { | |
211 | /* Select register set A */ | |
212 | ret = da9055_reg_update(regulator->da9055, info->conf.reg, | |
213 | info->conf.sel_mask, DA9055_SEL_REG_A); | |
214 | if (ret < 0) | |
215 | return ret; | |
216 | ||
217 | /* Set the voltage */ | |
369cf602 AL |
218 | return da9055_reg_update(regulator->da9055, info->volt.reg_a, |
219 | info->volt.v_mask, selector); | |
f6130be6 AJ |
220 | } |
221 | ||
222 | /* | |
223 | * Here regulator register set A/B is selected through GPIO. | |
224 | * Therefore we first determine the selected register set A/B and | |
225 | * then set the desired voltage for that register set A/B. | |
226 | */ | |
227 | ret = da9055_reg_read(regulator->da9055, info->conf.reg); | |
228 | if (ret < 0) | |
229 | return ret; | |
230 | ||
231 | ret &= info->conf.sel_mask; | |
232 | ||
233 | /* Set the voltage */ | |
234 | if (ret == DA9055_REGUALTOR_SET_A) | |
369cf602 AL |
235 | return da9055_reg_update(regulator->da9055, info->volt.reg_a, |
236 | info->volt.v_mask, selector); | |
f6130be6 | 237 | else |
369cf602 AL |
238 | return da9055_reg_update(regulator->da9055, info->volt.reg_b, |
239 | info->volt.v_mask, selector); | |
f6130be6 AJ |
240 | } |
241 | ||
242 | static int da9055_regulator_set_suspend_voltage(struct regulator_dev *rdev, | |
243 | int uV) | |
244 | { | |
245 | struct da9055_regulator *regulator = rdev_get_drvdata(rdev); | |
246 | struct da9055_regulator_info *info = regulator->info; | |
247 | int ret; | |
248 | ||
249 | /* Select register set B for suspend voltage ramping. */ | |
250 | if (regulator->reg_rselect == NO_GPIO) { | |
251 | ret = da9055_reg_update(regulator->da9055, info->conf.reg, | |
252 | info->conf.sel_mask, DA9055_SEL_REG_B); | |
253 | if (ret < 0) | |
254 | return ret; | |
255 | } | |
256 | ||
6b1f8a45 | 257 | ret = regulator_map_voltage_linear(rdev, uV, uV); |
f6130be6 AJ |
258 | if (ret < 0) |
259 | return ret; | |
260 | ||
369cf602 AL |
261 | return da9055_reg_update(regulator->da9055, info->volt.reg_b, |
262 | info->volt.v_mask, ret); | |
f6130be6 AJ |
263 | } |
264 | ||
265 | static int da9055_suspend_enable(struct regulator_dev *rdev) | |
266 | { | |
267 | struct da9055_regulator *regulator = rdev_get_drvdata(rdev); | |
268 | struct da9055_regulator_info *info = regulator->info; | |
269 | ||
270 | /* Select register set B for voltage ramping. */ | |
271 | if (regulator->reg_rselect == NO_GPIO) | |
272 | return da9055_reg_update(regulator->da9055, info->conf.reg, | |
273 | info->conf.sel_mask, DA9055_SEL_REG_B); | |
274 | else | |
275 | return 0; | |
276 | } | |
277 | ||
278 | static int da9055_suspend_disable(struct regulator_dev *rdev) | |
279 | { | |
280 | struct da9055_regulator *regulator = rdev_get_drvdata(rdev); | |
281 | struct da9055_regulator_info *info = regulator->info; | |
282 | ||
283 | /* Diselect register set B. */ | |
284 | if (regulator->reg_rselect == NO_GPIO) | |
285 | return da9055_reg_update(regulator->da9055, info->conf.reg, | |
286 | info->conf.sel_mask, DA9055_SEL_REG_A); | |
287 | else | |
288 | return 0; | |
289 | } | |
290 | ||
71242b49 | 291 | static const struct regulator_ops da9055_buck_ops = { |
f6130be6 AJ |
292 | .get_mode = da9055_buck_get_mode, |
293 | .set_mode = da9055_buck_set_mode, | |
294 | ||
941666e2 AL |
295 | .get_current_limit = regulator_get_current_limit_regmap, |
296 | .set_current_limit = regulator_set_current_limit_regmap, | |
f6130be6 AJ |
297 | |
298 | .get_voltage_sel = da9055_regulator_get_voltage_sel, | |
299 | .set_voltage_sel = da9055_regulator_set_voltage_sel, | |
6b1f8a45 AL |
300 | .list_voltage = regulator_list_voltage_linear, |
301 | .map_voltage = regulator_map_voltage_linear, | |
f6130be6 AJ |
302 | .is_enabled = regulator_is_enabled_regmap, |
303 | .enable = regulator_enable_regmap, | |
304 | .disable = regulator_disable_regmap, | |
305 | ||
306 | .set_suspend_voltage = da9055_regulator_set_suspend_voltage, | |
307 | .set_suspend_enable = da9055_suspend_enable, | |
308 | .set_suspend_disable = da9055_suspend_disable, | |
309 | .set_suspend_mode = da9055_buck_set_mode, | |
310 | }; | |
311 | ||
71242b49 | 312 | static const struct regulator_ops da9055_ldo_ops = { |
f6130be6 AJ |
313 | .get_mode = da9055_ldo_get_mode, |
314 | .set_mode = da9055_ldo_set_mode, | |
315 | ||
316 | .get_voltage_sel = da9055_regulator_get_voltage_sel, | |
317 | .set_voltage_sel = da9055_regulator_set_voltage_sel, | |
6b1f8a45 AL |
318 | .list_voltage = regulator_list_voltage_linear, |
319 | .map_voltage = regulator_map_voltage_linear, | |
f6130be6 AJ |
320 | .is_enabled = regulator_is_enabled_regmap, |
321 | .enable = regulator_enable_regmap, | |
322 | .disable = regulator_disable_regmap, | |
323 | ||
324 | .set_suspend_voltage = da9055_regulator_set_suspend_voltage, | |
325 | .set_suspend_enable = da9055_suspend_enable, | |
326 | .set_suspend_disable = da9055_suspend_disable, | |
327 | .set_suspend_mode = da9055_ldo_set_mode, | |
328 | ||
329 | }; | |
330 | ||
331 | #define DA9055_LDO(_id, step, min, max, vbits, voffset) \ | |
332 | {\ | |
333 | .reg_desc = {\ | |
334 | .name = #_id,\ | |
db7ecb49 AL |
335 | .of_match = of_match_ptr(#_id),\ |
336 | .regulators_node = of_match_ptr("regulators"),\ | |
f6130be6 AJ |
337 | .ops = &da9055_ldo_ops,\ |
338 | .type = REGULATOR_VOLTAGE,\ | |
339 | .id = DA9055_ID_##_id,\ | |
369cf602 | 340 | .n_voltages = (max - min) / step + 1 + (voffset), \ |
f6130be6 AJ |
341 | .enable_reg = DA9055_REG_BCORE_CONT + DA9055_ID_##_id, \ |
342 | .enable_mask = 1, \ | |
343 | .min_uV = (min) * 1000,\ | |
344 | .uV_step = (step) * 1000,\ | |
6b1f8a45 | 345 | .linear_min_sel = (voffset),\ |
f6130be6 AJ |
346 | .owner = THIS_MODULE,\ |
347 | },\ | |
348 | .conf = {\ | |
349 | .reg = DA9055_REG_BCORE_CONT + DA9055_ID_##_id, \ | |
350 | .sel_mask = (1 << 4),\ | |
351 | .en_mask = 1,\ | |
352 | },\ | |
353 | .volt = {\ | |
354 | .reg_a = DA9055_REG_VBCORE_A + DA9055_ID_##_id, \ | |
355 | .reg_b = DA9055_REG_VBCORE_B + DA9055_ID_##_id, \ | |
356 | .sl_shift = 7,\ | |
f6130be6 | 357 | .v_mask = (1 << (vbits)) - 1,\ |
f6130be6 AJ |
358 | },\ |
359 | } | |
360 | ||
361 | #define DA9055_BUCK(_id, step, min, max, vbits, voffset, mbits, sbits) \ | |
362 | {\ | |
363 | .reg_desc = {\ | |
364 | .name = #_id,\ | |
db7ecb49 AL |
365 | .of_match = of_match_ptr(#_id),\ |
366 | .regulators_node = of_match_ptr("regulators"),\ | |
f6130be6 AJ |
367 | .ops = &da9055_buck_ops,\ |
368 | .type = REGULATOR_VOLTAGE,\ | |
369 | .id = DA9055_ID_##_id,\ | |
369cf602 | 370 | .n_voltages = (max - min) / step + 1 + (voffset), \ |
f6130be6 AJ |
371 | .enable_reg = DA9055_REG_BCORE_CONT + DA9055_ID_##_id, \ |
372 | .enable_mask = 1,\ | |
373 | .min_uV = (min) * 1000,\ | |
374 | .uV_step = (step) * 1000,\ | |
6b1f8a45 | 375 | .linear_min_sel = (voffset),\ |
f6130be6 | 376 | .owner = THIS_MODULE,\ |
941666e2 AL |
377 | .curr_table = da9055_current_limits,\ |
378 | .n_current_limits = ARRAY_SIZE(da9055_current_limits),\ | |
379 | .csel_reg = DA9055_REG_BUCK_LIM,\ | |
380 | .csel_mask = (mbits),\ | |
f6130be6 AJ |
381 | },\ |
382 | .conf = {\ | |
383 | .reg = DA9055_REG_BCORE_CONT + DA9055_ID_##_id, \ | |
384 | .sel_mask = (1 << 4),\ | |
385 | .en_mask = 1,\ | |
386 | },\ | |
387 | .volt = {\ | |
388 | .reg_a = DA9055_REG_VBCORE_A + DA9055_ID_##_id, \ | |
389 | .reg_b = DA9055_REG_VBCORE_B + DA9055_ID_##_id, \ | |
390 | .sl_shift = 7,\ | |
f6130be6 | 391 | .v_mask = (1 << (vbits)) - 1,\ |
f6130be6 AJ |
392 | },\ |
393 | .mode = {\ | |
394 | .reg = DA9055_REG_BCORE_MODE,\ | |
395 | .mask = (mbits),\ | |
396 | .shift = (sbits),\ | |
397 | },\ | |
398 | } | |
399 | ||
400 | static struct da9055_regulator_info da9055_regulator_info[] = { | |
401 | DA9055_BUCK(BUCK1, 25, 725, 2075, 6, 9, 0xc, 2), | |
402 | DA9055_BUCK(BUCK2, 25, 925, 2500, 6, 0, 3, 0), | |
403 | DA9055_LDO(LDO1, 50, 900, 3300, 6, 2), | |
404 | DA9055_LDO(LDO2, 50, 900, 3300, 6, 3), | |
405 | DA9055_LDO(LDO3, 50, 900, 3300, 6, 2), | |
406 | DA9055_LDO(LDO4, 50, 900, 3300, 6, 2), | |
407 | DA9055_LDO(LDO5, 50, 900, 2750, 6, 2), | |
408 | DA9055_LDO(LDO6, 20, 900, 3300, 7, 0), | |
409 | }; | |
410 | ||
411 | /* | |
412 | * Configures regulator to be controlled either through GPIO 1 or 2. | |
413 | * GPIO can control regulator state and/or select the regulator register | |
414 | * set A/B for voltage ramping. | |
415 | */ | |
3d68dfe3 GKH |
416 | static int da9055_gpio_init(struct da9055_regulator *regulator, |
417 | struct regulator_config *config, | |
418 | struct da9055_pdata *pdata, int id) | |
f6130be6 AJ |
419 | { |
420 | struct da9055_regulator_info *info = regulator->info; | |
421 | int ret = 0; | |
422 | ||
8b61a28d AT |
423 | if (!pdata) |
424 | return 0; | |
425 | ||
f6130be6 AJ |
426 | if (pdata->gpio_ren && pdata->gpio_ren[id]) { |
427 | char name[18]; | |
428 | int gpio_mux = pdata->gpio_ren[id]; | |
429 | ||
8d05560d | 430 | config->ena_gpiod = pdata->ena_gpiods[id]; |
f6130be6 AJ |
431 | |
432 | /* | |
433 | * GPI pin is muxed with regulator to control the | |
434 | * regulator state. | |
435 | */ | |
436 | sprintf(name, "DA9055 GPI %d", gpio_mux); | |
437 | ret = devm_gpio_request_one(config->dev, gpio_mux, GPIOF_DIR_IN, | |
438 | name); | |
439 | if (ret < 0) | |
440 | goto err; | |
441 | ||
442 | /* | |
443 | * Let the regulator know that its state is controlled | |
444 | * through GPI. | |
445 | */ | |
446 | ret = da9055_reg_update(regulator->da9055, info->conf.reg, | |
447 | DA9055_E_GPI_MASK, | |
448 | pdata->reg_ren[id] | |
449 | << DA9055_E_GPI_SHIFT); | |
450 | if (ret < 0) | |
451 | goto err; | |
452 | } | |
453 | ||
26cbd307 | 454 | if (pdata->gpio_rsel && pdata->gpio_rsel[id]) { |
f6130be6 AJ |
455 | char name[18]; |
456 | int gpio_mux = pdata->gpio_rsel[id]; | |
457 | ||
458 | regulator->reg_rselect = pdata->reg_rsel[id]; | |
459 | ||
460 | /* | |
461 | * GPI pin is muxed with regulator to select the | |
462 | * regulator register set A/B for voltage ramping. | |
463 | */ | |
464 | sprintf(name, "DA9055 GPI %d", gpio_mux); | |
465 | ret = devm_gpio_request_one(config->dev, gpio_mux, GPIOF_DIR_IN, | |
466 | name); | |
467 | if (ret < 0) | |
468 | goto err; | |
469 | ||
470 | /* | |
471 | * Let the regulator know that its register set A/B | |
472 | * will be selected through GPI for voltage ramping. | |
473 | */ | |
474 | ret = da9055_reg_update(regulator->da9055, info->conf.reg, | |
475 | DA9055_V_GPI_MASK, | |
476 | pdata->reg_rsel[id] | |
477 | << DA9055_V_GPI_SHIFT); | |
478 | } | |
479 | ||
480 | err: | |
481 | return ret; | |
482 | } | |
483 | ||
484 | static irqreturn_t da9055_ldo5_6_oc_irq(int irq, void *data) | |
485 | { | |
486 | struct da9055_regulator *regulator = data; | |
487 | ||
5e6afb38 | 488 | regulator_lock(regulator->rdev); |
f6130be6 AJ |
489 | regulator_notifier_call_chain(regulator->rdev, |
490 | REGULATOR_EVENT_OVER_CURRENT, NULL); | |
5e6afb38 | 491 | regulator_unlock(regulator->rdev); |
f6130be6 AJ |
492 | |
493 | return IRQ_HANDLED; | |
494 | } | |
495 | ||
496 | static inline struct da9055_regulator_info *find_regulator_info(int id) | |
497 | { | |
498 | struct da9055_regulator_info *info; | |
499 | int i; | |
500 | ||
501 | for (i = 0; i < ARRAY_SIZE(da9055_regulator_info); i++) { | |
502 | info = &da9055_regulator_info[i]; | |
503 | if (info->reg_desc.id == id) | |
504 | return info; | |
505 | } | |
506 | ||
507 | return NULL; | |
508 | } | |
509 | ||
3d68dfe3 | 510 | static int da9055_regulator_probe(struct platform_device *pdev) |
f6130be6 AJ |
511 | { |
512 | struct regulator_config config = { }; | |
513 | struct da9055_regulator *regulator; | |
514 | struct da9055 *da9055 = dev_get_drvdata(pdev->dev.parent); | |
dff91d0b | 515 | struct da9055_pdata *pdata = dev_get_platdata(da9055->dev); |
f6130be6 AJ |
516 | int ret, irq; |
517 | ||
f6130be6 AJ |
518 | regulator = devm_kzalloc(&pdev->dev, sizeof(struct da9055_regulator), |
519 | GFP_KERNEL); | |
520 | if (!regulator) | |
521 | return -ENOMEM; | |
522 | ||
523 | regulator->info = find_regulator_info(pdev->id); | |
524 | if (regulator->info == NULL) { | |
525 | dev_err(&pdev->dev, "invalid regulator ID specified\n"); | |
526 | return -EINVAL; | |
527 | } | |
528 | ||
529 | regulator->da9055 = da9055; | |
db7ecb49 | 530 | config.dev = da9055->dev; |
f6130be6 AJ |
531 | config.driver_data = regulator; |
532 | config.regmap = da9055->regmap; | |
533 | ||
db7ecb49 | 534 | if (pdata) |
f6130be6 AJ |
535 | config.init_data = pdata->regulators[pdev->id]; |
536 | ||
537 | ret = da9055_gpio_init(regulator, &config, pdata, pdev->id); | |
538 | if (ret < 0) | |
539 | return ret; | |
540 | ||
0d328806 AL |
541 | regulator->rdev = devm_regulator_register(&pdev->dev, |
542 | ®ulator->info->reg_desc, | |
543 | &config); | |
f6130be6 AJ |
544 | if (IS_ERR(regulator->rdev)) { |
545 | dev_err(&pdev->dev, "Failed to register regulator %s\n", | |
546 | regulator->info->reg_desc.name); | |
0d328806 | 547 | return PTR_ERR(regulator->rdev); |
f6130be6 AJ |
548 | } |
549 | ||
550 | /* Only LDO 5 and 6 has got the over current interrupt */ | |
551 | if (pdev->id == DA9055_ID_LDO5 || pdev->id == DA9055_ID_LDO6) { | |
552 | irq = platform_get_irq_byname(pdev, "REGULATOR"); | |
f17083c3 AT |
553 | if (irq < 0) |
554 | return irq; | |
555 | ||
f6130be6 AJ |
556 | ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, |
557 | da9055_ldo5_6_oc_irq, | |
558 | IRQF_TRIGGER_HIGH | | |
559 | IRQF_ONESHOT | | |
560 | IRQF_PROBE_SHARED, | |
561 | pdev->name, regulator); | |
562 | if (ret != 0) { | |
563 | if (ret != -EBUSY) { | |
564 | dev_err(&pdev->dev, | |
565 | "Failed to request Regulator IRQ %d: %d\n", | |
566 | irq, ret); | |
0d328806 | 567 | return ret; |
f6130be6 AJ |
568 | } |
569 | } | |
570 | } | |
571 | ||
572 | platform_set_drvdata(pdev, regulator); | |
573 | ||
f6130be6 AJ |
574 | return 0; |
575 | } | |
576 | ||
577 | static struct platform_driver da9055_regulator_driver = { | |
578 | .probe = da9055_regulator_probe, | |
f6130be6 AJ |
579 | .driver = { |
580 | .name = "da9055-regulator", | |
f6130be6 AJ |
581 | }, |
582 | }; | |
583 | ||
584 | static int __init da9055_regulator_init(void) | |
585 | { | |
586 | return platform_driver_register(&da9055_regulator_driver); | |
587 | } | |
588 | subsys_initcall(da9055_regulator_init); | |
589 | ||
590 | static void __exit da9055_regulator_exit(void) | |
591 | { | |
592 | platform_driver_unregister(&da9055_regulator_driver); | |
593 | } | |
594 | module_exit(da9055_regulator_exit); | |
595 | ||
596 | MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>"); | |
597 | MODULE_DESCRIPTION("Power Regulator driver for Dialog DA9055 PMIC"); | |
598 | MODULE_LICENSE("GPL"); | |
599 | MODULE_ALIAS("platform:da9055-regulator"); |