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1 | /* | |
2 | * max77686.c - Regulator driver for the Maxim 77686 | |
3 | * | |
4 | * Copyright (C) 2012 Samsung Electronics | |
5 | * Chiwoong Byun <woong.byun@samsung.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/err.h> | |
28 | #include <linux/gpio.h> | |
29 | #include <linux/of_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> | |
34 | #include <linux/regulator/of_regulator.h> | |
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 | |
44 | #define MAX77686_BUCK_ENABLE_TIME 40 /* us */ | |
45 | #define MAX77686_DVS_ENABLE_TIME 22 /* us */ | |
46 | #define MAX77686_RAMP_DELAY 100000 /* uV/us */ | |
47 | #define MAX77686_DVS_RAMP_DELAY 27500 /* uV/us */ | |
48 | #define MAX77686_DVS_MINUV 600000 | |
49 | #define MAX77686_DVS_UVSTEP 12500 | |
50 | ||
51 | /* | |
52 | * Value for configuring buck[89] and LDO{20,21,22} as GPIO control. | |
53 | * It is the same as 'off' for other regulators. | |
54 | */ | |
55 | #define MAX77686_GPIO_CONTROL 0x0 | |
56 | /* | |
57 | * Values used for configuring LDOs and bucks. | |
58 | * Forcing low power mode: LDO1, 3-5, 9, 13, 17-26 | |
59 | */ | |
60 | #define MAX77686_LDO_LOWPOWER 0x1 | |
61 | /* | |
62 | * On/off controlled by PWRREQ: | |
63 | * - LDO2, 6-8, 10-12, 14-16 | |
64 | * - buck[1234] | |
65 | */ | |
66 | #define MAX77686_OFF_PWRREQ 0x1 | |
67 | /* Low power mode controlled by PWRREQ: All LDOs */ | |
68 | #define MAX77686_LDO_LOWPOWER_PWRREQ 0x2 | |
69 | /* Forcing low power mode: buck[234] */ | |
70 | #define MAX77686_BUCK_LOWPOWER 0x2 | |
71 | #define MAX77686_NORMAL 0x3 | |
72 | ||
73 | #define MAX77686_OPMODE_SHIFT 6 | |
74 | #define MAX77686_OPMODE_BUCK234_SHIFT 4 | |
75 | #define MAX77686_OPMODE_MASK 0x3 | |
76 | ||
77 | #define MAX77686_VSEL_MASK 0x3F | |
78 | #define MAX77686_DVS_VSEL_MASK 0xFF | |
79 | ||
80 | #define MAX77686_RAMP_RATE_MASK 0xC0 | |
81 | ||
82 | #define MAX77686_REGULATORS MAX77686_REG_MAX | |
83 | #define MAX77686_LDOS 26 | |
84 | ||
85 | enum max77686_ramp_rate { | |
86 | RAMP_RATE_13P75MV, | |
87 | RAMP_RATE_27P5MV, | |
88 | RAMP_RATE_55MV, | |
89 | RAMP_RATE_NO_CTRL, /* 100mV/us */ | |
90 | }; | |
91 | ||
92 | struct max77686_data { | |
93 | DECLARE_BITMAP(gpio_enabled, MAX77686_REGULATORS); | |
94 | ||
95 | /* Array indexed by regulator id */ | |
96 | unsigned int opmode[MAX77686_REGULATORS]; | |
97 | }; | |
98 | ||
99 | static unsigned int max77686_get_opmode_shift(int id) | |
100 | { | |
101 | switch (id) { | |
102 | case MAX77686_BUCK1: | |
103 | case MAX77686_BUCK5 ... MAX77686_BUCK9: | |
104 | return 0; | |
105 | case MAX77686_BUCK2 ... MAX77686_BUCK4: | |
106 | return MAX77686_OPMODE_BUCK234_SHIFT; | |
107 | default: | |
108 | /* all LDOs */ | |
109 | return MAX77686_OPMODE_SHIFT; | |
110 | } | |
111 | } | |
112 | ||
113 | /* | |
114 | * When regulator is configured for GPIO control then it | |
115 | * replaces "normal" mode. Any change from low power mode to normal | |
116 | * should actually change to GPIO control. | |
117 | * Map normal mode to proper value for such regulators. | |
118 | */ | |
119 | static unsigned int max77686_map_normal_mode(struct max77686_data *max77686, | |
120 | int id) | |
121 | { | |
122 | switch (id) { | |
123 | case MAX77686_BUCK8: | |
124 | case MAX77686_BUCK9: | |
125 | case MAX77686_LDO20 ... MAX77686_LDO22: | |
126 | if (test_bit(id, max77686->gpio_enabled)) | |
127 | return MAX77686_GPIO_CONTROL; | |
128 | } | |
129 | ||
130 | return MAX77686_NORMAL; | |
131 | } | |
132 | ||
133 | /* Some BUCKs and LDOs supports Normal[ON/OFF] mode during suspend */ | |
134 | static int max77686_set_suspend_disable(struct regulator_dev *rdev) | |
135 | { | |
136 | unsigned int val, shift; | |
137 | struct max77686_data *max77686 = rdev_get_drvdata(rdev); | |
138 | int ret, id = rdev_get_id(rdev); | |
139 | ||
140 | shift = max77686_get_opmode_shift(id); | |
141 | val = MAX77686_OFF_PWRREQ; | |
142 | ||
143 | ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, | |
144 | rdev->desc->enable_mask, val << shift); | |
145 | if (ret) | |
146 | return ret; | |
147 | ||
148 | max77686->opmode[id] = val; | |
149 | return 0; | |
150 | } | |
151 | ||
152 | /* Some LDOs supports [LPM/Normal]ON mode during suspend state */ | |
153 | static int max77686_set_suspend_mode(struct regulator_dev *rdev, | |
154 | unsigned int mode) | |
155 | { | |
156 | struct max77686_data *max77686 = rdev_get_drvdata(rdev); | |
157 | unsigned int val; | |
158 | int ret, id = rdev_get_id(rdev); | |
159 | ||
160 | /* BUCK[5-9] doesn't support this feature */ | |
161 | if (id >= MAX77686_BUCK5) | |
162 | return 0; | |
163 | ||
164 | switch (mode) { | |
165 | case REGULATOR_MODE_IDLE: /* ON in LP Mode */ | |
166 | val = MAX77686_LDO_LOWPOWER_PWRREQ; | |
167 | break; | |
168 | case REGULATOR_MODE_NORMAL: /* ON in Normal Mode */ | |
169 | val = max77686_map_normal_mode(max77686, id); | |
170 | break; | |
171 | default: | |
172 | pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n", | |
173 | rdev->desc->name, mode); | |
174 | return -EINVAL; | |
175 | } | |
176 | ||
177 | ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, | |
178 | rdev->desc->enable_mask, | |
179 | val << MAX77686_OPMODE_SHIFT); | |
180 | if (ret) | |
181 | return ret; | |
182 | ||
183 | max77686->opmode[id] = val; | |
184 | return 0; | |
185 | } | |
186 | ||
187 | /* Some LDOs supports LPM-ON/OFF/Normal-ON mode during suspend state */ | |
188 | static int max77686_ldo_set_suspend_mode(struct regulator_dev *rdev, | |
189 | unsigned int mode) | |
190 | { | |
191 | unsigned int val; | |
192 | struct max77686_data *max77686 = rdev_get_drvdata(rdev); | |
193 | int ret, id = rdev_get_id(rdev); | |
194 | ||
195 | switch (mode) { | |
196 | case REGULATOR_MODE_STANDBY: /* switch off */ | |
197 | val = MAX77686_OFF_PWRREQ; | |
198 | break; | |
199 | case REGULATOR_MODE_IDLE: /* ON in LP Mode */ | |
200 | val = MAX77686_LDO_LOWPOWER_PWRREQ; | |
201 | break; | |
202 | case REGULATOR_MODE_NORMAL: /* ON in Normal Mode */ | |
203 | val = max77686_map_normal_mode(max77686, id); | |
204 | break; | |
205 | default: | |
206 | pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n", | |
207 | rdev->desc->name, mode); | |
208 | return -EINVAL; | |
209 | } | |
210 | ||
211 | ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, | |
212 | rdev->desc->enable_mask, | |
213 | val << MAX77686_OPMODE_SHIFT); | |
214 | if (ret) | |
215 | return ret; | |
216 | ||
217 | max77686->opmode[id] = val; | |
218 | return 0; | |
219 | } | |
220 | ||
221 | static int max77686_enable(struct regulator_dev *rdev) | |
222 | { | |
223 | struct max77686_data *max77686 = rdev_get_drvdata(rdev); | |
224 | unsigned int shift; | |
225 | int id = rdev_get_id(rdev); | |
226 | ||
227 | shift = max77686_get_opmode_shift(id); | |
228 | ||
229 | if (max77686->opmode[id] == MAX77686_OFF_PWRREQ) | |
230 | max77686->opmode[id] = max77686_map_normal_mode(max77686, id); | |
231 | ||
232 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, | |
233 | rdev->desc->enable_mask, | |
234 | max77686->opmode[id] << shift); | |
235 | } | |
236 | ||
237 | static int max77686_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay) | |
238 | { | |
239 | unsigned int ramp_value = RAMP_RATE_NO_CTRL; | |
240 | ||
241 | switch (ramp_delay) { | |
242 | case 1 ... 13750: | |
243 | ramp_value = RAMP_RATE_13P75MV; | |
244 | break; | |
245 | case 13751 ... 27500: | |
246 | ramp_value = RAMP_RATE_27P5MV; | |
247 | break; | |
248 | case 27501 ... 55000: | |
249 | ramp_value = RAMP_RATE_55MV; | |
250 | break; | |
251 | case 55001 ... 100000: | |
252 | break; | |
253 | default: | |
254 | pr_warn("%s: ramp_delay: %d not supported, setting 100000\n", | |
255 | rdev->desc->name, ramp_delay); | |
256 | } | |
257 | ||
258 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, | |
259 | MAX77686_RAMP_RATE_MASK, ramp_value << 6); | |
260 | } | |
261 | ||
262 | static int max77686_of_parse_cb(struct device_node *np, | |
263 | const struct regulator_desc *desc, | |
264 | struct regulator_config *config) | |
265 | { | |
266 | struct max77686_data *max77686 = config->driver_data; | |
267 | ||
268 | switch (desc->id) { | |
269 | case MAX77686_BUCK8: | |
270 | case MAX77686_BUCK9: | |
271 | case MAX77686_LDO20 ... MAX77686_LDO22: | |
272 | config->ena_gpio = of_get_named_gpio(np, | |
273 | "maxim,ena-gpios", 0); | |
274 | config->ena_gpio_flags = GPIOF_OUT_INIT_HIGH; | |
275 | config->ena_gpio_initialized = true; | |
276 | break; | |
277 | default: | |
278 | return 0; | |
279 | } | |
280 | ||
281 | if (gpio_is_valid(config->ena_gpio)) { | |
282 | set_bit(desc->id, max77686->gpio_enabled); | |
283 | ||
284 | return regmap_update_bits(config->regmap, desc->enable_reg, | |
285 | desc->enable_mask, | |
286 | MAX77686_GPIO_CONTROL); | |
287 | } | |
288 | ||
289 | return 0; | |
290 | } | |
291 | ||
292 | static struct regulator_ops max77686_ops = { | |
293 | .list_voltage = regulator_list_voltage_linear, | |
294 | .map_voltage = regulator_map_voltage_linear, | |
295 | .is_enabled = regulator_is_enabled_regmap, | |
296 | .enable = max77686_enable, | |
297 | .disable = regulator_disable_regmap, | |
298 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
299 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
300 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
301 | .set_suspend_mode = max77686_set_suspend_mode, | |
302 | }; | |
303 | ||
304 | static struct regulator_ops max77686_ldo_ops = { | |
305 | .list_voltage = regulator_list_voltage_linear, | |
306 | .map_voltage = regulator_map_voltage_linear, | |
307 | .is_enabled = regulator_is_enabled_regmap, | |
308 | .enable = max77686_enable, | |
309 | .disable = regulator_disable_regmap, | |
310 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
311 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
312 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
313 | .set_suspend_mode = max77686_ldo_set_suspend_mode, | |
314 | .set_suspend_disable = max77686_set_suspend_disable, | |
315 | }; | |
316 | ||
317 | static struct regulator_ops max77686_buck1_ops = { | |
318 | .list_voltage = regulator_list_voltage_linear, | |
319 | .map_voltage = regulator_map_voltage_linear, | |
320 | .is_enabled = regulator_is_enabled_regmap, | |
321 | .enable = max77686_enable, | |
322 | .disable = regulator_disable_regmap, | |
323 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
324 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
325 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
326 | .set_suspend_disable = max77686_set_suspend_disable, | |
327 | }; | |
328 | ||
329 | static struct regulator_ops max77686_buck_dvs_ops = { | |
330 | .list_voltage = regulator_list_voltage_linear, | |
331 | .map_voltage = regulator_map_voltage_linear, | |
332 | .is_enabled = regulator_is_enabled_regmap, | |
333 | .enable = max77686_enable, | |
334 | .disable = regulator_disable_regmap, | |
335 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
336 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
337 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
338 | .set_ramp_delay = max77686_set_ramp_delay, | |
339 | .set_suspend_disable = max77686_set_suspend_disable, | |
340 | }; | |
341 | ||
342 | #define regulator_desc_ldo(num) { \ | |
343 | .name = "LDO"#num, \ | |
344 | .of_match = of_match_ptr("LDO"#num), \ | |
345 | .regulators_node = of_match_ptr("voltage-regulators"), \ | |
346 | .of_parse_cb = max77686_of_parse_cb, \ | |
347 | .id = MAX77686_LDO##num, \ | |
348 | .ops = &max77686_ops, \ | |
349 | .type = REGULATOR_VOLTAGE, \ | |
350 | .owner = THIS_MODULE, \ | |
351 | .min_uV = MAX77686_LDO_MINUV, \ | |
352 | .uV_step = MAX77686_LDO_UVSTEP, \ | |
353 | .ramp_delay = MAX77686_RAMP_DELAY, \ | |
354 | .n_voltages = MAX77686_VSEL_MASK + 1, \ | |
355 | .vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ | |
356 | .vsel_mask = MAX77686_VSEL_MASK, \ | |
357 | .enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ | |
358 | .enable_mask = MAX77686_OPMODE_MASK \ | |
359 | << MAX77686_OPMODE_SHIFT, \ | |
360 | } | |
361 | #define regulator_desc_lpm_ldo(num) { \ | |
362 | .name = "LDO"#num, \ | |
363 | .of_match = of_match_ptr("LDO"#num), \ | |
364 | .regulators_node = of_match_ptr("voltage-regulators"), \ | |
365 | .id = MAX77686_LDO##num, \ | |
366 | .ops = &max77686_ldo_ops, \ | |
367 | .type = REGULATOR_VOLTAGE, \ | |
368 | .owner = THIS_MODULE, \ | |
369 | .min_uV = MAX77686_LDO_MINUV, \ | |
370 | .uV_step = MAX77686_LDO_UVSTEP, \ | |
371 | .ramp_delay = MAX77686_RAMP_DELAY, \ | |
372 | .n_voltages = MAX77686_VSEL_MASK + 1, \ | |
373 | .vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ | |
374 | .vsel_mask = MAX77686_VSEL_MASK, \ | |
375 | .enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ | |
376 | .enable_mask = MAX77686_OPMODE_MASK \ | |
377 | << MAX77686_OPMODE_SHIFT, \ | |
378 | } | |
379 | #define regulator_desc_ldo_low(num) { \ | |
380 | .name = "LDO"#num, \ | |
381 | .of_match = of_match_ptr("LDO"#num), \ | |
382 | .regulators_node = of_match_ptr("voltage-regulators"), \ | |
383 | .id = MAX77686_LDO##num, \ | |
384 | .ops = &max77686_ldo_ops, \ | |
385 | .type = REGULATOR_VOLTAGE, \ | |
386 | .owner = THIS_MODULE, \ | |
387 | .min_uV = MAX77686_LDO_LOW_MINUV, \ | |
388 | .uV_step = MAX77686_LDO_LOW_UVSTEP, \ | |
389 | .ramp_delay = MAX77686_RAMP_DELAY, \ | |
390 | .n_voltages = MAX77686_VSEL_MASK + 1, \ | |
391 | .vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ | |
392 | .vsel_mask = MAX77686_VSEL_MASK, \ | |
393 | .enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ | |
394 | .enable_mask = MAX77686_OPMODE_MASK \ | |
395 | << MAX77686_OPMODE_SHIFT, \ | |
396 | } | |
397 | #define regulator_desc_ldo1_low(num) { \ | |
398 | .name = "LDO"#num, \ | |
399 | .of_match = of_match_ptr("LDO"#num), \ | |
400 | .regulators_node = of_match_ptr("voltage-regulators"), \ | |
401 | .id = MAX77686_LDO##num, \ | |
402 | .ops = &max77686_ops, \ | |
403 | .type = REGULATOR_VOLTAGE, \ | |
404 | .owner = THIS_MODULE, \ | |
405 | .min_uV = MAX77686_LDO_LOW_MINUV, \ | |
406 | .uV_step = MAX77686_LDO_LOW_UVSTEP, \ | |
407 | .ramp_delay = MAX77686_RAMP_DELAY, \ | |
408 | .n_voltages = MAX77686_VSEL_MASK + 1, \ | |
409 | .vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ | |
410 | .vsel_mask = MAX77686_VSEL_MASK, \ | |
411 | .enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ | |
412 | .enable_mask = MAX77686_OPMODE_MASK \ | |
413 | << MAX77686_OPMODE_SHIFT, \ | |
414 | } | |
415 | #define regulator_desc_buck(num) { \ | |
416 | .name = "BUCK"#num, \ | |
417 | .of_match = of_match_ptr("BUCK"#num), \ | |
418 | .regulators_node = of_match_ptr("voltage-regulators"), \ | |
419 | .of_parse_cb = max77686_of_parse_cb, \ | |
420 | .id = MAX77686_BUCK##num, \ | |
421 | .ops = &max77686_ops, \ | |
422 | .type = REGULATOR_VOLTAGE, \ | |
423 | .owner = THIS_MODULE, \ | |
424 | .min_uV = MAX77686_BUCK_MINUV, \ | |
425 | .uV_step = MAX77686_BUCK_UVSTEP, \ | |
426 | .ramp_delay = MAX77686_RAMP_DELAY, \ | |
427 | .enable_time = MAX77686_BUCK_ENABLE_TIME, \ | |
428 | .n_voltages = MAX77686_VSEL_MASK + 1, \ | |
429 | .vsel_reg = MAX77686_REG_BUCK5OUT + (num - 5) * 2, \ | |
430 | .vsel_mask = MAX77686_VSEL_MASK, \ | |
431 | .enable_reg = MAX77686_REG_BUCK5CTRL + (num - 5) * 2, \ | |
432 | .enable_mask = MAX77686_OPMODE_MASK, \ | |
433 | } | |
434 | #define regulator_desc_buck1(num) { \ | |
435 | .name = "BUCK"#num, \ | |
436 | .of_match = of_match_ptr("BUCK"#num), \ | |
437 | .regulators_node = of_match_ptr("voltage-regulators"), \ | |
438 | .id = MAX77686_BUCK##num, \ | |
439 | .ops = &max77686_buck1_ops, \ | |
440 | .type = REGULATOR_VOLTAGE, \ | |
441 | .owner = THIS_MODULE, \ | |
442 | .min_uV = MAX77686_BUCK_MINUV, \ | |
443 | .uV_step = MAX77686_BUCK_UVSTEP, \ | |
444 | .ramp_delay = MAX77686_RAMP_DELAY, \ | |
445 | .enable_time = MAX77686_BUCK_ENABLE_TIME, \ | |
446 | .n_voltages = MAX77686_VSEL_MASK + 1, \ | |
447 | .vsel_reg = MAX77686_REG_BUCK1OUT, \ | |
448 | .vsel_mask = MAX77686_VSEL_MASK, \ | |
449 | .enable_reg = MAX77686_REG_BUCK1CTRL, \ | |
450 | .enable_mask = MAX77686_OPMODE_MASK, \ | |
451 | } | |
452 | #define regulator_desc_buck_dvs(num) { \ | |
453 | .name = "BUCK"#num, \ | |
454 | .of_match = of_match_ptr("BUCK"#num), \ | |
455 | .regulators_node = of_match_ptr("voltage-regulators"), \ | |
456 | .id = MAX77686_BUCK##num, \ | |
457 | .ops = &max77686_buck_dvs_ops, \ | |
458 | .type = REGULATOR_VOLTAGE, \ | |
459 | .owner = THIS_MODULE, \ | |
460 | .min_uV = MAX77686_DVS_MINUV, \ | |
461 | .uV_step = MAX77686_DVS_UVSTEP, \ | |
462 | .ramp_delay = MAX77686_DVS_RAMP_DELAY, \ | |
463 | .enable_time = MAX77686_DVS_ENABLE_TIME, \ | |
464 | .n_voltages = MAX77686_DVS_VSEL_MASK + 1, \ | |
465 | .vsel_reg = MAX77686_REG_BUCK2DVS1 + (num - 2) * 10, \ | |
466 | .vsel_mask = MAX77686_DVS_VSEL_MASK, \ | |
467 | .enable_reg = MAX77686_REG_BUCK2CTRL1 + (num - 2) * 10, \ | |
468 | .enable_mask = MAX77686_OPMODE_MASK \ | |
469 | << MAX77686_OPMODE_BUCK234_SHIFT, \ | |
470 | } | |
471 | ||
472 | static const struct regulator_desc regulators[] = { | |
473 | regulator_desc_ldo1_low(1), | |
474 | regulator_desc_ldo_low(2), | |
475 | regulator_desc_ldo(3), | |
476 | regulator_desc_ldo(4), | |
477 | regulator_desc_ldo(5), | |
478 | regulator_desc_ldo_low(6), | |
479 | regulator_desc_ldo_low(7), | |
480 | regulator_desc_ldo_low(8), | |
481 | regulator_desc_ldo(9), | |
482 | regulator_desc_lpm_ldo(10), | |
483 | regulator_desc_lpm_ldo(11), | |
484 | regulator_desc_lpm_ldo(12), | |
485 | regulator_desc_ldo(13), | |
486 | regulator_desc_lpm_ldo(14), | |
487 | regulator_desc_ldo_low(15), | |
488 | regulator_desc_lpm_ldo(16), | |
489 | regulator_desc_ldo(17), | |
490 | regulator_desc_ldo(18), | |
491 | regulator_desc_ldo(19), | |
492 | regulator_desc_ldo(20), | |
493 | regulator_desc_ldo(21), | |
494 | regulator_desc_ldo(22), | |
495 | regulator_desc_ldo(23), | |
496 | regulator_desc_ldo(24), | |
497 | regulator_desc_ldo(25), | |
498 | regulator_desc_ldo(26), | |
499 | regulator_desc_buck1(1), | |
500 | regulator_desc_buck_dvs(2), | |
501 | regulator_desc_buck_dvs(3), | |
502 | regulator_desc_buck_dvs(4), | |
503 | regulator_desc_buck(5), | |
504 | regulator_desc_buck(6), | |
505 | regulator_desc_buck(7), | |
506 | regulator_desc_buck(8), | |
507 | regulator_desc_buck(9), | |
508 | }; | |
509 | ||
510 | static int max77686_pmic_probe(struct platform_device *pdev) | |
511 | { | |
512 | struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent); | |
513 | struct max77686_data *max77686; | |
514 | int i; | |
515 | struct regulator_config config = { }; | |
516 | ||
517 | dev_dbg(&pdev->dev, "%s\n", __func__); | |
518 | ||
519 | max77686 = devm_kzalloc(&pdev->dev, sizeof(struct max77686_data), | |
520 | GFP_KERNEL); | |
521 | if (!max77686) | |
522 | return -ENOMEM; | |
523 | ||
524 | config.dev = iodev->dev; | |
525 | config.regmap = iodev->regmap; | |
526 | config.driver_data = max77686; | |
527 | platform_set_drvdata(pdev, max77686); | |
528 | ||
529 | for (i = 0; i < MAX77686_REGULATORS; i++) { | |
530 | struct regulator_dev *rdev; | |
531 | int id = regulators[i].id; | |
532 | ||
533 | max77686->opmode[id] = MAX77686_NORMAL; | |
534 | rdev = devm_regulator_register(&pdev->dev, | |
535 | ®ulators[i], &config); | |
536 | if (IS_ERR(rdev)) { | |
537 | int ret = PTR_ERR(rdev); | |
538 | dev_err(&pdev->dev, | |
539 | "regulator init failed for %d: %d\n", i, ret); | |
540 | return ret; | |
541 | } | |
542 | } | |
543 | ||
544 | return 0; | |
545 | } | |
546 | ||
547 | static const struct platform_device_id max77686_pmic_id[] = { | |
548 | {"max77686-pmic", 0}, | |
549 | { }, | |
550 | }; | |
551 | MODULE_DEVICE_TABLE(platform, max77686_pmic_id); | |
552 | ||
553 | static struct platform_driver max77686_pmic_driver = { | |
554 | .driver = { | |
555 | .name = "max77686-pmic", | |
556 | }, | |
557 | .probe = max77686_pmic_probe, | |
558 | .id_table = max77686_pmic_id, | |
559 | }; | |
560 | ||
561 | module_platform_driver(max77686_pmic_driver); | |
562 | ||
563 | MODULE_DESCRIPTION("MAXIM 77686 Regulator Driver"); | |
564 | MODULE_AUTHOR("Chiwoong Byun <woong.byun@samsung.com>"); | |
565 | MODULE_LICENSE("GPL"); |