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133d4016 JL |
1 | /* |
2 | * max77686.c - Regulator driver for the Maxim 77686 | |
3 | * | |
4 | * Copyright (C) 2012 Samsung Electronics | |
5 | * Chiwoong Byun <woong.byun@smasung.com> | |
6 | * Jonghwa Lee <jonghwa3.lee@samsung.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 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | * | |
22 | * This driver is based on max8997.c | |
23 | */ | |
24 | ||
25 | #include <linux/kernel.h> | |
26 | #include <linux/bug.h> | |
27 | #include <linux/delay.h> | |
28 | #include <linux/err.h> | |
29 | #include <linux/gpio.h> | |
30 | #include <linux/slab.h> | |
31 | #include <linux/platform_device.h> | |
32 | #include <linux/regulator/driver.h> | |
33 | #include <linux/regulator/machine.h> | |
4706fcab | 34 | #include <linux/regulator/of_regulator.h> |
133d4016 JL |
35 | #include <linux/mfd/max77686.h> |
36 | #include <linux/mfd/max77686-private.h> | |
37 | ||
38 | #define MAX77686_LDO_MINUV 800000 | |
39 | #define MAX77686_LDO_UVSTEP 50000 | |
40 | #define MAX77686_LDO_LOW_MINUV 800000 | |
41 | #define MAX77686_LDO_LOW_UVSTEP 25000 | |
42 | #define MAX77686_BUCK_MINUV 750000 | |
43 | #define MAX77686_BUCK_UVSTEP 50000 | |
852abad2 YSB |
44 | #define MAX77686_RAMP_DELAY 100000 /* uV/us */ |
45 | #define MAX77686_DVS_RAMP_DELAY 27500 /* uV/us */ | |
133d4016 JL |
46 | #define MAX77686_DVS_MINUV 600000 |
47 | #define MAX77686_DVS_UVSTEP 12500 | |
48 | ||
49 | #define MAX77686_OPMODE_SHIFT 6 | |
50 | #define MAX77686_OPMODE_BUCK234_SHIFT 4 | |
51 | #define MAX77686_OPMODE_MASK 0x3 | |
52 | ||
53 | #define MAX77686_VSEL_MASK 0x3F | |
54 | #define MAX77686_DVS_VSEL_MASK 0xFF | |
55 | ||
56 | #define MAX77686_RAMP_RATE_MASK 0xC0 | |
57 | ||
58 | #define MAX77686_REGULATORS MAX77686_REG_MAX | |
59 | #define MAX77686_LDOS 26 | |
60 | ||
61 | enum max77686_ramp_rate { | |
62 | RAMP_RATE_13P75MV, | |
63 | RAMP_RATE_27P5MV, | |
64 | RAMP_RATE_55MV, | |
65 | RAMP_RATE_NO_CTRL, /* 100mV/us */ | |
66 | }; | |
67 | ||
68 | struct max77686_data { | |
cb44cdea | 69 | struct regulator_dev *rdev[MAX77686_REGULATORS]; |
6d2c896b | 70 | unsigned int opmode[MAX77686_REGULATORS]; |
133d4016 JL |
71 | }; |
72 | ||
15282ba9 YSB |
73 | /* Some BUCKS supports Normal[ON/OFF] mode during suspend */ |
74 | static int max77686_buck_set_suspend_disable(struct regulator_dev *rdev) | |
75 | { | |
76 | unsigned int val; | |
77 | struct max77686_data *max77686 = rdev_get_drvdata(rdev); | |
40e72149 | 78 | int id = rdev_get_id(rdev); |
15282ba9 | 79 | |
40e72149 | 80 | if (id == MAX77686_BUCK1) |
15282ba9 YSB |
81 | val = 0x1; |
82 | else | |
83 | val = 0x1 << MAX77686_OPMODE_BUCK234_SHIFT; | |
84 | ||
40e72149 | 85 | max77686->opmode[id] = val; |
15282ba9 YSB |
86 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, |
87 | rdev->desc->enable_mask, | |
88 | val); | |
89 | } | |
90 | ||
91 | /* Some LDOs supports [LPM/Normal]ON mode during suspend state */ | |
92 | static int max77686_set_suspend_mode(struct regulator_dev *rdev, | |
93 | unsigned int mode) | |
94 | { | |
95 | struct max77686_data *max77686 = rdev_get_drvdata(rdev); | |
96 | unsigned int val; | |
40e72149 | 97 | int id = rdev_get_id(rdev); |
15282ba9 YSB |
98 | |
99 | /* BUCK[5-9] doesn't support this feature */ | |
40e72149 | 100 | if (id >= MAX77686_BUCK5) |
15282ba9 YSB |
101 | return 0; |
102 | ||
103 | switch (mode) { | |
104 | case REGULATOR_MODE_IDLE: /* ON in LP Mode */ | |
105 | val = 0x2 << MAX77686_OPMODE_SHIFT; | |
106 | break; | |
107 | case REGULATOR_MODE_NORMAL: /* ON in Normal Mode */ | |
108 | val = 0x3 << MAX77686_OPMODE_SHIFT; | |
109 | break; | |
110 | default: | |
111 | pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n", | |
112 | rdev->desc->name, mode); | |
113 | return -EINVAL; | |
114 | } | |
115 | ||
40e72149 | 116 | max77686->opmode[id] = val; |
15282ba9 YSB |
117 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, |
118 | rdev->desc->enable_mask, | |
119 | val); | |
120 | } | |
121 | ||
122 | /* Some LDOs supports LPM-ON/OFF/Normal-ON mode during suspend state */ | |
123 | static int max77686_ldo_set_suspend_mode(struct regulator_dev *rdev, | |
124 | unsigned int mode) | |
125 | { | |
126 | unsigned int val; | |
127 | struct max77686_data *max77686 = rdev_get_drvdata(rdev); | |
128 | ||
129 | switch (mode) { | |
130 | case REGULATOR_MODE_STANDBY: /* switch off */ | |
131 | val = 0x1 << MAX77686_OPMODE_SHIFT; | |
132 | break; | |
133 | case REGULATOR_MODE_IDLE: /* ON in LP Mode */ | |
134 | val = 0x2 << MAX77686_OPMODE_SHIFT; | |
135 | break; | |
136 | case REGULATOR_MODE_NORMAL: /* ON in Normal Mode */ | |
137 | val = 0x3 << MAX77686_OPMODE_SHIFT; | |
138 | break; | |
139 | default: | |
140 | pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n", | |
141 | rdev->desc->name, mode); | |
142 | return -EINVAL; | |
143 | } | |
144 | ||
40e72149 | 145 | max77686->opmode[rdev_get_id(rdev)] = val; |
15282ba9 YSB |
146 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, |
147 | rdev->desc->enable_mask, | |
148 | val); | |
149 | } | |
150 | ||
38d34035 | 151 | static int max77686_enable(struct regulator_dev *rdev) |
6d2c896b YSB |
152 | { |
153 | struct max77686_data *max77686 = rdev_get_drvdata(rdev); | |
154 | ||
155 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, | |
156 | rdev->desc->enable_mask, | |
40e72149 | 157 | max77686->opmode[rdev_get_id(rdev)]); |
6d2c896b YSB |
158 | } |
159 | ||
f503071b YSB |
160 | static int max77686_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay) |
161 | { | |
162 | unsigned int ramp_value = RAMP_RATE_NO_CTRL; | |
163 | ||
164 | switch (ramp_delay) { | |
165 | case 1 ... 13750: | |
166 | ramp_value = RAMP_RATE_13P75MV; | |
167 | break; | |
168 | case 13751 ... 27500: | |
169 | ramp_value = RAMP_RATE_27P5MV; | |
170 | break; | |
171 | case 27501 ... 55000: | |
172 | ramp_value = RAMP_RATE_55MV; | |
173 | break; | |
174 | case 55001 ... 100000: | |
175 | break; | |
176 | default: | |
177 | pr_warn("%s: ramp_delay: %d not supported, setting 100000\n", | |
178 | rdev->desc->name, ramp_delay); | |
179 | } | |
180 | ||
181 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, | |
182 | MAX77686_RAMP_RATE_MASK, ramp_value << 6); | |
183 | } | |
184 | ||
133d4016 JL |
185 | static struct regulator_ops max77686_ops = { |
186 | .list_voltage = regulator_list_voltage_linear, | |
2e3f7f26 | 187 | .map_voltage = regulator_map_voltage_linear, |
133d4016 | 188 | .is_enabled = regulator_is_enabled_regmap, |
6d2c896b | 189 | .enable = max77686_enable, |
133d4016 JL |
190 | .disable = regulator_disable_regmap, |
191 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
192 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
852abad2 | 193 | .set_voltage_time_sel = regulator_set_voltage_time_sel, |
15282ba9 YSB |
194 | .set_suspend_mode = max77686_set_suspend_mode, |
195 | }; | |
196 | ||
197 | static struct regulator_ops max77686_ldo_ops = { | |
198 | .list_voltage = regulator_list_voltage_linear, | |
199 | .map_voltage = regulator_map_voltage_linear, | |
200 | .is_enabled = regulator_is_enabled_regmap, | |
201 | .enable = max77686_enable, | |
133d4016 JL |
202 | .disable = regulator_disable_regmap, |
203 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
204 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
852abad2 | 205 | .set_voltage_time_sel = regulator_set_voltage_time_sel, |
15282ba9 YSB |
206 | .set_suspend_mode = max77686_ldo_set_suspend_mode, |
207 | }; | |
208 | ||
209 | static struct regulator_ops max77686_buck1_ops = { | |
210 | .list_voltage = regulator_list_voltage_linear, | |
211 | .map_voltage = regulator_map_voltage_linear, | |
212 | .is_enabled = regulator_is_enabled_regmap, | |
213 | .enable = max77686_enable, | |
214 | .disable = regulator_disable_regmap, | |
215 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
216 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
217 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
218 | .set_suspend_disable = max77686_buck_set_suspend_disable, | |
133d4016 JL |
219 | }; |
220 | ||
221 | static struct regulator_ops max77686_buck_dvs_ops = { | |
222 | .list_voltage = regulator_list_voltage_linear, | |
2e3f7f26 | 223 | .map_voltage = regulator_map_voltage_linear, |
133d4016 | 224 | .is_enabled = regulator_is_enabled_regmap, |
6d2c896b | 225 | .enable = max77686_enable, |
133d4016 JL |
226 | .disable = regulator_disable_regmap, |
227 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
228 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
852abad2 | 229 | .set_voltage_time_sel = regulator_set_voltage_time_sel, |
f503071b | 230 | .set_ramp_delay = max77686_set_ramp_delay, |
15282ba9 | 231 | .set_suspend_disable = max77686_buck_set_suspend_disable, |
133d4016 JL |
232 | }; |
233 | ||
234 | #define regulator_desc_ldo(num) { \ | |
235 | .name = "LDO"#num, \ | |
236 | .id = MAX77686_LDO##num, \ | |
237 | .ops = &max77686_ops, \ | |
238 | .type = REGULATOR_VOLTAGE, \ | |
239 | .owner = THIS_MODULE, \ | |
240 | .min_uV = MAX77686_LDO_MINUV, \ | |
241 | .uV_step = MAX77686_LDO_UVSTEP, \ | |
852abad2 | 242 | .ramp_delay = MAX77686_RAMP_DELAY, \ |
133d4016 JL |
243 | .n_voltages = MAX77686_VSEL_MASK + 1, \ |
244 | .vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ | |
245 | .vsel_mask = MAX77686_VSEL_MASK, \ | |
246 | .enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ | |
247 | .enable_mask = MAX77686_OPMODE_MASK \ | |
248 | << MAX77686_OPMODE_SHIFT, \ | |
249 | } | |
15282ba9 YSB |
250 | #define regulator_desc_lpm_ldo(num) { \ |
251 | .name = "LDO"#num, \ | |
252 | .id = MAX77686_LDO##num, \ | |
253 | .ops = &max77686_ldo_ops, \ | |
254 | .type = REGULATOR_VOLTAGE, \ | |
255 | .owner = THIS_MODULE, \ | |
256 | .min_uV = MAX77686_LDO_MINUV, \ | |
257 | .uV_step = MAX77686_LDO_UVSTEP, \ | |
258 | .ramp_delay = MAX77686_RAMP_DELAY, \ | |
259 | .n_voltages = MAX77686_VSEL_MASK + 1, \ | |
260 | .vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ | |
261 | .vsel_mask = MAX77686_VSEL_MASK, \ | |
262 | .enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ | |
263 | .enable_mask = MAX77686_OPMODE_MASK \ | |
264 | << MAX77686_OPMODE_SHIFT, \ | |
265 | } | |
133d4016 | 266 | #define regulator_desc_ldo_low(num) { \ |
15282ba9 YSB |
267 | .name = "LDO"#num, \ |
268 | .id = MAX77686_LDO##num, \ | |
269 | .ops = &max77686_ldo_ops, \ | |
270 | .type = REGULATOR_VOLTAGE, \ | |
271 | .owner = THIS_MODULE, \ | |
272 | .min_uV = MAX77686_LDO_LOW_MINUV, \ | |
273 | .uV_step = MAX77686_LDO_LOW_UVSTEP, \ | |
274 | .ramp_delay = MAX77686_RAMP_DELAY, \ | |
275 | .n_voltages = MAX77686_VSEL_MASK + 1, \ | |
276 | .vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ | |
277 | .vsel_mask = MAX77686_VSEL_MASK, \ | |
278 | .enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ | |
279 | .enable_mask = MAX77686_OPMODE_MASK \ | |
280 | << MAX77686_OPMODE_SHIFT, \ | |
281 | } | |
282 | #define regulator_desc_ldo1_low(num) { \ | |
133d4016 JL |
283 | .name = "LDO"#num, \ |
284 | .id = MAX77686_LDO##num, \ | |
285 | .ops = &max77686_ops, \ | |
286 | .type = REGULATOR_VOLTAGE, \ | |
287 | .owner = THIS_MODULE, \ | |
288 | .min_uV = MAX77686_LDO_LOW_MINUV, \ | |
289 | .uV_step = MAX77686_LDO_LOW_UVSTEP, \ | |
852abad2 | 290 | .ramp_delay = MAX77686_RAMP_DELAY, \ |
133d4016 JL |
291 | .n_voltages = MAX77686_VSEL_MASK + 1, \ |
292 | .vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ | |
293 | .vsel_mask = MAX77686_VSEL_MASK, \ | |
294 | .enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ | |
295 | .enable_mask = MAX77686_OPMODE_MASK \ | |
296 | << MAX77686_OPMODE_SHIFT, \ | |
297 | } | |
298 | #define regulator_desc_buck(num) { \ | |
299 | .name = "BUCK"#num, \ | |
300 | .id = MAX77686_BUCK##num, \ | |
301 | .ops = &max77686_ops, \ | |
302 | .type = REGULATOR_VOLTAGE, \ | |
303 | .owner = THIS_MODULE, \ | |
304 | .min_uV = MAX77686_BUCK_MINUV, \ | |
305 | .uV_step = MAX77686_BUCK_UVSTEP, \ | |
852abad2 | 306 | .ramp_delay = MAX77686_RAMP_DELAY, \ |
133d4016 JL |
307 | .n_voltages = MAX77686_VSEL_MASK + 1, \ |
308 | .vsel_reg = MAX77686_REG_BUCK5OUT + (num - 5) * 2, \ | |
309 | .vsel_mask = MAX77686_VSEL_MASK, \ | |
310 | .enable_reg = MAX77686_REG_BUCK5CTRL + (num - 5) * 2, \ | |
311 | .enable_mask = MAX77686_OPMODE_MASK, \ | |
312 | } | |
313 | #define regulator_desc_buck1(num) { \ | |
314 | .name = "BUCK"#num, \ | |
315 | .id = MAX77686_BUCK##num, \ | |
15282ba9 | 316 | .ops = &max77686_buck1_ops, \ |
133d4016 JL |
317 | .type = REGULATOR_VOLTAGE, \ |
318 | .owner = THIS_MODULE, \ | |
319 | .min_uV = MAX77686_BUCK_MINUV, \ | |
320 | .uV_step = MAX77686_BUCK_UVSTEP, \ | |
852abad2 | 321 | .ramp_delay = MAX77686_RAMP_DELAY, \ |
133d4016 JL |
322 | .n_voltages = MAX77686_VSEL_MASK + 1, \ |
323 | .vsel_reg = MAX77686_REG_BUCK1OUT, \ | |
324 | .vsel_mask = MAX77686_VSEL_MASK, \ | |
325 | .enable_reg = MAX77686_REG_BUCK1CTRL, \ | |
326 | .enable_mask = MAX77686_OPMODE_MASK, \ | |
327 | } | |
328 | #define regulator_desc_buck_dvs(num) { \ | |
329 | .name = "BUCK"#num, \ | |
330 | .id = MAX77686_BUCK##num, \ | |
74adfee5 | 331 | .ops = &max77686_buck_dvs_ops, \ |
133d4016 JL |
332 | .type = REGULATOR_VOLTAGE, \ |
333 | .owner = THIS_MODULE, \ | |
334 | .min_uV = MAX77686_DVS_MINUV, \ | |
335 | .uV_step = MAX77686_DVS_UVSTEP, \ | |
852abad2 | 336 | .ramp_delay = MAX77686_DVS_RAMP_DELAY, \ |
133d4016 JL |
337 | .n_voltages = MAX77686_DVS_VSEL_MASK + 1, \ |
338 | .vsel_reg = MAX77686_REG_BUCK2DVS1 + (num - 2) * 10, \ | |
339 | .vsel_mask = MAX77686_DVS_VSEL_MASK, \ | |
340 | .enable_reg = MAX77686_REG_BUCK2CTRL1 + (num - 2) * 10, \ | |
341 | .enable_mask = MAX77686_OPMODE_MASK \ | |
342 | << MAX77686_OPMODE_BUCK234_SHIFT, \ | |
343 | } | |
344 | ||
345 | static struct regulator_desc regulators[] = { | |
15282ba9 | 346 | regulator_desc_ldo1_low(1), |
133d4016 JL |
347 | regulator_desc_ldo_low(2), |
348 | regulator_desc_ldo(3), | |
349 | regulator_desc_ldo(4), | |
350 | regulator_desc_ldo(5), | |
351 | regulator_desc_ldo_low(6), | |
352 | regulator_desc_ldo_low(7), | |
353 | regulator_desc_ldo_low(8), | |
354 | regulator_desc_ldo(9), | |
15282ba9 YSB |
355 | regulator_desc_lpm_ldo(10), |
356 | regulator_desc_lpm_ldo(11), | |
357 | regulator_desc_lpm_ldo(12), | |
133d4016 | 358 | regulator_desc_ldo(13), |
15282ba9 | 359 | regulator_desc_lpm_ldo(14), |
133d4016 | 360 | regulator_desc_ldo_low(15), |
15282ba9 | 361 | regulator_desc_lpm_ldo(16), |
133d4016 JL |
362 | regulator_desc_ldo(17), |
363 | regulator_desc_ldo(18), | |
364 | regulator_desc_ldo(19), | |
365 | regulator_desc_ldo(20), | |
366 | regulator_desc_ldo(21), | |
367 | regulator_desc_ldo(22), | |
368 | regulator_desc_ldo(23), | |
369 | regulator_desc_ldo(24), | |
370 | regulator_desc_ldo(25), | |
371 | regulator_desc_ldo(26), | |
372 | regulator_desc_buck1(1), | |
373 | regulator_desc_buck_dvs(2), | |
374 | regulator_desc_buck_dvs(3), | |
375 | regulator_desc_buck_dvs(4), | |
376 | regulator_desc_buck(5), | |
377 | regulator_desc_buck(6), | |
378 | regulator_desc_buck(7), | |
379 | regulator_desc_buck(8), | |
380 | regulator_desc_buck(9), | |
381 | }; | |
382 | ||
4706fcab | 383 | #ifdef CONFIG_OF |
b19f5758 | 384 | static int max77686_pmic_dt_parse_pdata(struct platform_device *pdev, |
4706fcab YSB |
385 | struct max77686_platform_data *pdata) |
386 | { | |
b19f5758 | 387 | struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent); |
4706fcab YSB |
388 | struct device_node *pmic_np, *regulators_np; |
389 | struct max77686_regulator_data *rdata; | |
390 | struct of_regulator_match rmatch; | |
391 | unsigned int i; | |
392 | ||
393 | pmic_np = iodev->dev->of_node; | |
394 | regulators_np = of_find_node_by_name(pmic_np, "voltage-regulators"); | |
395 | if (!regulators_np) { | |
b19f5758 | 396 | dev_err(&pdev->dev, "could not find regulators sub-node\n"); |
4706fcab YSB |
397 | return -EINVAL; |
398 | } | |
399 | ||
400 | pdata->num_regulators = ARRAY_SIZE(regulators); | |
b19f5758 | 401 | rdata = devm_kzalloc(&pdev->dev, sizeof(*rdata) * |
4706fcab YSB |
402 | pdata->num_regulators, GFP_KERNEL); |
403 | if (!rdata) { | |
b19f5758 | 404 | dev_err(&pdev->dev, |
4706fcab YSB |
405 | "could not allocate memory for regulator data\n"); |
406 | return -ENOMEM; | |
407 | } | |
408 | ||
409 | for (i = 0; i < pdata->num_regulators; i++) { | |
410 | rmatch.name = regulators[i].name; | |
411 | rmatch.init_data = NULL; | |
d1ef065d | 412 | rmatch.of_node = NULL; |
b19f5758 | 413 | of_regulator_match(&pdev->dev, regulators_np, &rmatch, 1); |
4706fcab | 414 | rdata[i].initdata = rmatch.init_data; |
2c58e266 | 415 | rdata[i].of_node = rmatch.of_node; |
4706fcab YSB |
416 | } |
417 | ||
418 | pdata->regulators = rdata; | |
419 | ||
420 | return 0; | |
421 | } | |
422 | #else | |
b19f5758 | 423 | static int max77686_pmic_dt_parse_pdata(struct platform_device *pdev, |
4706fcab YSB |
424 | struct max77686_platform_data *pdata) |
425 | { | |
426 | return 0; | |
427 | } | |
428 | #endif /* CONFIG_OF */ | |
429 | ||
a5023574 | 430 | static int max77686_pmic_probe(struct platform_device *pdev) |
133d4016 JL |
431 | { |
432 | struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent); | |
433 | struct max77686_platform_data *pdata = dev_get_platdata(iodev->dev); | |
133d4016 | 434 | struct max77686_data *max77686; |
cb44cdea | 435 | int i, ret = 0; |
c59d2a6b | 436 | struct regulator_config config = { }; |
133d4016 JL |
437 | |
438 | dev_dbg(&pdev->dev, "%s\n", __func__); | |
439 | ||
4706fcab YSB |
440 | if (!pdata) { |
441 | dev_err(&pdev->dev, "no platform data found for regulator\n"); | |
442 | return -ENODEV; | |
443 | } | |
444 | ||
445 | if (iodev->dev->of_node) { | |
b19f5758 | 446 | ret = max77686_pmic_dt_parse_pdata(pdev, pdata); |
4706fcab YSB |
447 | if (ret) |
448 | return ret; | |
449 | } | |
450 | ||
451 | if (pdata->num_regulators != MAX77686_REGULATORS) { | |
ab0d1cbe AL |
452 | dev_err(&pdev->dev, |
453 | "Invalid initial data for regulator's initialiation\n"); | |
454 | return -EINVAL; | |
455 | } | |
456 | ||
133d4016 JL |
457 | max77686 = devm_kzalloc(&pdev->dev, sizeof(struct max77686_data), |
458 | GFP_KERNEL); | |
459 | if (!max77686) | |
460 | return -ENOMEM; | |
461 | ||
f503071b YSB |
462 | config.dev = &pdev->dev; |
463 | config.regmap = iodev->regmap; | |
6d2c896b | 464 | config.driver_data = max77686; |
133d4016 JL |
465 | platform_set_drvdata(pdev, max77686); |
466 | ||
ab0d1cbe | 467 | for (i = 0; i < MAX77686_REGULATORS; i++) { |
ab0d1cbe | 468 | config.init_data = pdata->regulators[i].initdata; |
2c58e266 | 469 | config.of_node = pdata->regulators[i].of_node; |
133d4016 | 470 | |
6d2c896b | 471 | max77686->opmode[i] = regulators[i].enable_mask; |
cb44cdea AL |
472 | max77686->rdev[i] = regulator_register(®ulators[i], &config); |
473 | if (IS_ERR(max77686->rdev[i])) { | |
474 | ret = PTR_ERR(max77686->rdev[i]); | |
f503071b | 475 | dev_err(&pdev->dev, |
133d4016 | 476 | "regulator init failed for %d\n", i); |
cb44cdea AL |
477 | max77686->rdev[i] = NULL; |
478 | goto err; | |
133d4016 | 479 | } |
133d4016 | 480 | } |
ab0d1cbe | 481 | |
133d4016 JL |
482 | return 0; |
483 | err: | |
ab0d1cbe | 484 | while (--i >= 0) |
cb44cdea | 485 | regulator_unregister(max77686->rdev[i]); |
133d4016 JL |
486 | return ret; |
487 | } | |
488 | ||
8dc995f5 | 489 | static int max77686_pmic_remove(struct platform_device *pdev) |
133d4016 JL |
490 | { |
491 | struct max77686_data *max77686 = platform_get_drvdata(pdev); | |
133d4016 JL |
492 | int i; |
493 | ||
494 | for (i = 0; i < MAX77686_REGULATORS; i++) | |
cb44cdea | 495 | regulator_unregister(max77686->rdev[i]); |
133d4016 JL |
496 | |
497 | return 0; | |
498 | } | |
499 | ||
500 | static const struct platform_device_id max77686_pmic_id[] = { | |
501 | {"max77686-pmic", 0}, | |
502 | { }, | |
503 | }; | |
504 | MODULE_DEVICE_TABLE(platform, max77686_pmic_id); | |
505 | ||
506 | static struct platform_driver max77686_pmic_driver = { | |
507 | .driver = { | |
508 | .name = "max77686-pmic", | |
509 | .owner = THIS_MODULE, | |
510 | }, | |
511 | .probe = max77686_pmic_probe, | |
5eb9f2b9 | 512 | .remove = max77686_pmic_remove, |
133d4016 JL |
513 | .id_table = max77686_pmic_id, |
514 | }; | |
515 | ||
516 | static int __init max77686_pmic_init(void) | |
517 | { | |
518 | return platform_driver_register(&max77686_pmic_driver); | |
519 | } | |
520 | subsys_initcall(max77686_pmic_init); | |
521 | ||
522 | static void __exit max77686_pmic_cleanup(void) | |
523 | { | |
524 | platform_driver_unregister(&max77686_pmic_driver); | |
525 | } | |
526 | module_exit(max77686_pmic_cleanup); | |
527 | ||
528 | MODULE_DESCRIPTION("MAXIM 77686 Regulator Driver"); | |
529 | MODULE_AUTHOR("Chiwoong Byun <woong.byun@samsung.com>"); | |
530 | MODULE_LICENSE("GPL"); |