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2cd64ae3 CZ |
1 | /* |
2 | * Regulator driver for Rockchip RK808 | |
3 | * | |
4 | * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd | |
5 | * | |
6 | * Author: Chris Zhong <zyw@rock-chips.com> | |
7 | * Author: Zhang Qing <zhangqing@rock-chips.com> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify it | |
10 | * under the terms and conditions of the GNU General Public License, | |
11 | * version 2, as published by the Free Software Foundation. | |
12 | * | |
13 | * This program is distributed in the hope it will be useful, but WITHOUT | |
14 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
16 | * more details. | |
2cd64ae3 CZ |
17 | */ |
18 | ||
bad47ad2 CZ |
19 | #include <linux/delay.h> |
20 | #include <linux/gpio.h> | |
2cd64ae3 | 21 | #include <linux/i2c.h> |
bad47ad2 | 22 | #include <linux/module.h> |
2cd64ae3 | 23 | #include <linux/of_device.h> |
bad47ad2 CZ |
24 | #include <linux/of_gpio.h> |
25 | #include <linux/mfd/rk808.h> | |
2cd64ae3 CZ |
26 | #include <linux/regulator/driver.h> |
27 | #include <linux/regulator/of_regulator.h> | |
604d4994 | 28 | #include <linux/gpio/consumer.h> |
571a4010 CZ |
29 | |
30 | /* Field Definitions */ | |
2cd64ae3 CZ |
31 | #define RK808_BUCK_VSEL_MASK 0x3f |
32 | #define RK808_BUCK4_VSEL_MASK 0xf | |
33 | #define RK808_LDO_VSEL_MASK 0x1f | |
34 | ||
8af25227 DA |
35 | /* Ramp rate definitions for buck1 / buck2 only */ |
36 | #define RK808_RAMP_RATE_OFFSET 3 | |
37 | #define RK808_RAMP_RATE_MASK (3 << RK808_RAMP_RATE_OFFSET) | |
38 | #define RK808_RAMP_RATE_2MV_PER_US (0 << RK808_RAMP_RATE_OFFSET) | |
39 | #define RK808_RAMP_RATE_4MV_PER_US (1 << RK808_RAMP_RATE_OFFSET) | |
40 | #define RK808_RAMP_RATE_6MV_PER_US (2 << RK808_RAMP_RATE_OFFSET) | |
41 | #define RK808_RAMP_RATE_10MV_PER_US (3 << RK808_RAMP_RATE_OFFSET) | |
42 | ||
bad47ad2 CZ |
43 | #define RK808_DVS2_POL BIT(2) |
44 | #define RK808_DVS1_POL BIT(1) | |
45 | ||
251ce318 CZ |
46 | /* Offset from XXX_ON_VSEL to XXX_SLP_VSEL */ |
47 | #define RK808_SLP_REG_OFFSET 1 | |
48 | ||
bad47ad2 CZ |
49 | /* Offset from XXX_ON_VSEL to XXX_DVS_VSEL */ |
50 | #define RK808_DVS_REG_OFFSET 2 | |
51 | ||
251ce318 CZ |
52 | /* Offset from XXX_EN_REG to SLEEP_SET_OFF_XXX */ |
53 | #define RK808_SLP_SET_OFF_REG_OFFSET 2 | |
54 | ||
bad47ad2 CZ |
55 | /* max steps for increase voltage of Buck1/2, equal 100mv*/ |
56 | #define MAX_STEPS_ONE_TIME 8 | |
57 | ||
58 | struct rk808_regulator_data { | |
59 | struct gpio_desc *dvs_gpio[2]; | |
60 | }; | |
61 | ||
8af25227 DA |
62 | static const int rk808_buck_config_regs[] = { |
63 | RK808_BUCK1_CONFIG_REG, | |
64 | RK808_BUCK2_CONFIG_REG, | |
65 | RK808_BUCK3_CONFIG_REG, | |
66 | RK808_BUCK4_CONFIG_REG, | |
67 | }; | |
68 | ||
2cd64ae3 | 69 | static const struct regulator_linear_range rk808_buck_voltage_ranges[] = { |
1575e288 | 70 | REGULATOR_LINEAR_RANGE(712500, 0, 63, 12500), |
2cd64ae3 CZ |
71 | }; |
72 | ||
73 | static const struct regulator_linear_range rk808_buck4_voltage_ranges[] = { | |
74 | REGULATOR_LINEAR_RANGE(1800000, 0, 15, 100000), | |
75 | }; | |
76 | ||
77 | static const struct regulator_linear_range rk808_ldo_voltage_ranges[] = { | |
78 | REGULATOR_LINEAR_RANGE(1800000, 0, 16, 100000), | |
79 | }; | |
80 | ||
81 | static const struct regulator_linear_range rk808_ldo3_voltage_ranges[] = { | |
82 | REGULATOR_LINEAR_RANGE(800000, 0, 13, 100000), | |
83 | REGULATOR_LINEAR_RANGE(2500000, 15, 15, 0), | |
84 | }; | |
85 | ||
86 | static const struct regulator_linear_range rk808_ldo6_voltage_ranges[] = { | |
87 | REGULATOR_LINEAR_RANGE(800000, 0, 17, 100000), | |
88 | }; | |
89 | ||
bad47ad2 CZ |
90 | static int rk808_buck1_2_get_voltage_sel_regmap(struct regulator_dev *rdev) |
91 | { | |
92 | struct rk808_regulator_data *pdata = rdev_get_drvdata(rdev); | |
93 | int id = rdev->desc->id - RK808_ID_DCDC1; | |
94 | struct gpio_desc *gpio = pdata->dvs_gpio[id]; | |
95 | unsigned int val; | |
96 | int ret; | |
97 | ||
a13eaf02 | 98 | if (!gpio || gpiod_get_value(gpio) == 0) |
bad47ad2 CZ |
99 | return regulator_get_voltage_sel_regmap(rdev); |
100 | ||
101 | ret = regmap_read(rdev->regmap, | |
102 | rdev->desc->vsel_reg + RK808_DVS_REG_OFFSET, | |
103 | &val); | |
104 | if (ret != 0) | |
105 | return ret; | |
106 | ||
107 | val &= rdev->desc->vsel_mask; | |
108 | val >>= ffs(rdev->desc->vsel_mask) - 1; | |
109 | ||
110 | return val; | |
111 | } | |
112 | ||
113 | static int rk808_buck1_2_i2c_set_voltage_sel(struct regulator_dev *rdev, | |
114 | unsigned sel) | |
115 | { | |
116 | int ret, delta_sel; | |
117 | unsigned int old_sel, tmp, val, mask = rdev->desc->vsel_mask; | |
118 | ||
119 | ret = regmap_read(rdev->regmap, rdev->desc->vsel_reg, &val); | |
120 | if (ret != 0) | |
121 | return ret; | |
122 | ||
123 | tmp = val & ~mask; | |
124 | old_sel = val & mask; | |
125 | old_sel >>= ffs(mask) - 1; | |
126 | delta_sel = sel - old_sel; | |
127 | ||
128 | /* | |
129 | * If directly modify the register to change the voltage, we will face | |
130 | * the risk of overshoot. Put it into a multi-step, can effectively | |
131 | * avoid this problem, a step is 100mv here. | |
132 | */ | |
133 | while (delta_sel > MAX_STEPS_ONE_TIME) { | |
134 | old_sel += MAX_STEPS_ONE_TIME; | |
135 | val = old_sel << (ffs(mask) - 1); | |
136 | val |= tmp; | |
137 | ||
138 | /* | |
139 | * i2c is 400kHz (2.5us per bit) and we must transmit _at least_ | |
140 | * 3 bytes (24 bits) plus start and stop so 26 bits. So we've | |
141 | * got more than 65 us between each voltage change and thus | |
142 | * won't ramp faster than ~1500 uV / us. | |
143 | */ | |
144 | ret = regmap_write(rdev->regmap, rdev->desc->vsel_reg, val); | |
145 | delta_sel = sel - old_sel; | |
146 | } | |
147 | ||
148 | sel <<= ffs(mask) - 1; | |
149 | val = tmp | sel; | |
150 | ret = regmap_write(rdev->regmap, rdev->desc->vsel_reg, val); | |
151 | ||
152 | /* | |
153 | * When we change the voltage register directly, the ramp rate is about | |
154 | * 100000uv/us, wait 1us to make sure the target voltage to be stable, | |
155 | * so we needn't wait extra time after that. | |
156 | */ | |
157 | udelay(1); | |
158 | ||
159 | return ret; | |
160 | } | |
161 | ||
162 | static int rk808_buck1_2_set_voltage_sel(struct regulator_dev *rdev, | |
163 | unsigned sel) | |
164 | { | |
165 | struct rk808_regulator_data *pdata = rdev_get_drvdata(rdev); | |
166 | int id = rdev->desc->id - RK808_ID_DCDC1; | |
167 | struct gpio_desc *gpio = pdata->dvs_gpio[id]; | |
168 | unsigned int reg = rdev->desc->vsel_reg; | |
169 | unsigned old_sel; | |
170 | int ret, gpio_level; | |
171 | ||
a13eaf02 | 172 | if (!gpio) |
bad47ad2 CZ |
173 | return rk808_buck1_2_i2c_set_voltage_sel(rdev, sel); |
174 | ||
175 | gpio_level = gpiod_get_value(gpio); | |
176 | if (gpio_level == 0) { | |
177 | reg += RK808_DVS_REG_OFFSET; | |
178 | ret = regmap_read(rdev->regmap, rdev->desc->vsel_reg, &old_sel); | |
179 | } else { | |
180 | ret = regmap_read(rdev->regmap, | |
181 | reg + RK808_DVS_REG_OFFSET, | |
182 | &old_sel); | |
183 | } | |
184 | ||
185 | if (ret != 0) | |
186 | return ret; | |
187 | ||
188 | sel <<= ffs(rdev->desc->vsel_mask) - 1; | |
189 | sel |= old_sel & ~rdev->desc->vsel_mask; | |
190 | ||
191 | ret = regmap_write(rdev->regmap, reg, sel); | |
192 | if (ret) | |
193 | return ret; | |
194 | ||
195 | gpiod_set_value(gpio, !gpio_level); | |
196 | ||
197 | return ret; | |
198 | } | |
199 | ||
200 | static int rk808_buck1_2_set_voltage_time_sel(struct regulator_dev *rdev, | |
201 | unsigned int old_selector, | |
202 | unsigned int new_selector) | |
203 | { | |
204 | struct rk808_regulator_data *pdata = rdev_get_drvdata(rdev); | |
205 | int id = rdev->desc->id - RK808_ID_DCDC1; | |
206 | struct gpio_desc *gpio = pdata->dvs_gpio[id]; | |
207 | ||
208 | /* if there is no dvs1/2 pin, we don't need wait extra time here. */ | |
a13eaf02 | 209 | if (!gpio) |
bad47ad2 CZ |
210 | return 0; |
211 | ||
212 | return regulator_set_voltage_time_sel(rdev, old_selector, new_selector); | |
213 | } | |
214 | ||
8af25227 DA |
215 | static int rk808_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay) |
216 | { | |
217 | unsigned int ramp_value = RK808_RAMP_RATE_10MV_PER_US; | |
218 | unsigned int reg = rk808_buck_config_regs[rdev->desc->id - | |
219 | RK808_ID_DCDC1]; | |
220 | ||
221 | switch (ramp_delay) { | |
222 | case 1 ... 2000: | |
223 | ramp_value = RK808_RAMP_RATE_2MV_PER_US; | |
224 | break; | |
225 | case 2001 ... 4000: | |
226 | ramp_value = RK808_RAMP_RATE_4MV_PER_US; | |
227 | break; | |
228 | case 4001 ... 6000: | |
229 | ramp_value = RK808_RAMP_RATE_6MV_PER_US; | |
230 | break; | |
231 | case 6001 ... 10000: | |
232 | break; | |
233 | default: | |
234 | pr_warn("%s ramp_delay: %d not supported, setting 10000\n", | |
235 | rdev->desc->name, ramp_delay); | |
236 | } | |
237 | ||
238 | return regmap_update_bits(rdev->regmap, reg, | |
239 | RK808_RAMP_RATE_MASK, ramp_value); | |
240 | } | |
241 | ||
5cb2f03c | 242 | static int rk808_set_suspend_voltage(struct regulator_dev *rdev, int uv) |
251ce318 CZ |
243 | { |
244 | unsigned int reg; | |
245 | int sel = regulator_map_voltage_linear_range(rdev, uv, uv); | |
246 | ||
247 | if (sel < 0) | |
248 | return -EINVAL; | |
249 | ||
250 | reg = rdev->desc->vsel_reg + RK808_SLP_REG_OFFSET; | |
251 | ||
252 | return regmap_update_bits(rdev->regmap, reg, | |
253 | rdev->desc->vsel_mask, | |
254 | sel); | |
255 | } | |
256 | ||
5cb2f03c | 257 | static int rk808_set_suspend_enable(struct regulator_dev *rdev) |
251ce318 CZ |
258 | { |
259 | unsigned int reg; | |
260 | ||
261 | reg = rdev->desc->enable_reg + RK808_SLP_SET_OFF_REG_OFFSET; | |
262 | ||
263 | return regmap_update_bits(rdev->regmap, reg, | |
264 | rdev->desc->enable_mask, | |
265 | 0); | |
266 | } | |
267 | ||
5cb2f03c | 268 | static int rk808_set_suspend_disable(struct regulator_dev *rdev) |
251ce318 CZ |
269 | { |
270 | unsigned int reg; | |
271 | ||
272 | reg = rdev->desc->enable_reg + RK808_SLP_SET_OFF_REG_OFFSET; | |
273 | ||
274 | return regmap_update_bits(rdev->regmap, reg, | |
275 | rdev->desc->enable_mask, | |
276 | rdev->desc->enable_mask); | |
277 | } | |
278 | ||
8af25227 DA |
279 | static struct regulator_ops rk808_buck1_2_ops = { |
280 | .list_voltage = regulator_list_voltage_linear_range, | |
281 | .map_voltage = regulator_map_voltage_linear_range, | |
bad47ad2 CZ |
282 | .get_voltage_sel = rk808_buck1_2_get_voltage_sel_regmap, |
283 | .set_voltage_sel = rk808_buck1_2_set_voltage_sel, | |
284 | .set_voltage_time_sel = rk808_buck1_2_set_voltage_time_sel, | |
8af25227 DA |
285 | .enable = regulator_enable_regmap, |
286 | .disable = regulator_disable_regmap, | |
287 | .is_enabled = regulator_is_enabled_regmap, | |
288 | .set_ramp_delay = rk808_set_ramp_delay, | |
251ce318 CZ |
289 | .set_suspend_voltage = rk808_set_suspend_voltage, |
290 | .set_suspend_enable = rk808_set_suspend_enable, | |
291 | .set_suspend_disable = rk808_set_suspend_disable, | |
8af25227 DA |
292 | }; |
293 | ||
2cd64ae3 CZ |
294 | static struct regulator_ops rk808_reg_ops = { |
295 | .list_voltage = regulator_list_voltage_linear_range, | |
296 | .map_voltage = regulator_map_voltage_linear_range, | |
297 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
298 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
299 | .enable = regulator_enable_regmap, | |
300 | .disable = regulator_disable_regmap, | |
301 | .is_enabled = regulator_is_enabled_regmap, | |
251ce318 CZ |
302 | .set_suspend_voltage = rk808_set_suspend_voltage, |
303 | .set_suspend_enable = rk808_set_suspend_enable, | |
304 | .set_suspend_disable = rk808_set_suspend_disable, | |
2cd64ae3 CZ |
305 | }; |
306 | ||
307 | static struct regulator_ops rk808_switch_ops = { | |
251ce318 CZ |
308 | .enable = regulator_enable_regmap, |
309 | .disable = regulator_disable_regmap, | |
310 | .is_enabled = regulator_is_enabled_regmap, | |
311 | .set_suspend_enable = rk808_set_suspend_enable, | |
312 | .set_suspend_disable = rk808_set_suspend_disable, | |
2cd64ae3 CZ |
313 | }; |
314 | ||
315 | static const struct regulator_desc rk808_reg[] = { | |
316 | { | |
317 | .name = "DCDC_REG1", | |
b8074eba | 318 | .supply_name = "vcc1", |
2cd64ae3 | 319 | .id = RK808_ID_DCDC1, |
8af25227 | 320 | .ops = &rk808_buck1_2_ops, |
2cd64ae3 CZ |
321 | .type = REGULATOR_VOLTAGE, |
322 | .n_voltages = 64, | |
323 | .linear_ranges = rk808_buck_voltage_ranges, | |
324 | .n_linear_ranges = ARRAY_SIZE(rk808_buck_voltage_ranges), | |
325 | .vsel_reg = RK808_BUCK1_ON_VSEL_REG, | |
326 | .vsel_mask = RK808_BUCK_VSEL_MASK, | |
327 | .enable_reg = RK808_DCDC_EN_REG, | |
328 | .enable_mask = BIT(0), | |
329 | .owner = THIS_MODULE, | |
330 | }, { | |
331 | .name = "DCDC_REG2", | |
b8074eba | 332 | .supply_name = "vcc2", |
2cd64ae3 | 333 | .id = RK808_ID_DCDC2, |
8af25227 | 334 | .ops = &rk808_buck1_2_ops, |
2cd64ae3 CZ |
335 | .type = REGULATOR_VOLTAGE, |
336 | .n_voltages = 64, | |
337 | .linear_ranges = rk808_buck_voltage_ranges, | |
338 | .n_linear_ranges = ARRAY_SIZE(rk808_buck_voltage_ranges), | |
339 | .vsel_reg = RK808_BUCK2_ON_VSEL_REG, | |
340 | .vsel_mask = RK808_BUCK_VSEL_MASK, | |
341 | .enable_reg = RK808_DCDC_EN_REG, | |
342 | .enable_mask = BIT(1), | |
343 | .owner = THIS_MODULE, | |
344 | }, { | |
345 | .name = "DCDC_REG3", | |
b8074eba | 346 | .supply_name = "vcc3", |
2cd64ae3 CZ |
347 | .id = RK808_ID_DCDC3, |
348 | .ops = &rk808_switch_ops, | |
349 | .type = REGULATOR_VOLTAGE, | |
350 | .n_voltages = 1, | |
351 | .enable_reg = RK808_DCDC_EN_REG, | |
352 | .enable_mask = BIT(2), | |
353 | .owner = THIS_MODULE, | |
354 | }, { | |
355 | .name = "DCDC_REG4", | |
b8074eba | 356 | .supply_name = "vcc4", |
2cd64ae3 CZ |
357 | .id = RK808_ID_DCDC4, |
358 | .ops = &rk808_reg_ops, | |
359 | .type = REGULATOR_VOLTAGE, | |
5a82067f | 360 | .n_voltages = 16, |
2cd64ae3 CZ |
361 | .linear_ranges = rk808_buck4_voltage_ranges, |
362 | .n_linear_ranges = ARRAY_SIZE(rk808_buck4_voltage_ranges), | |
363 | .vsel_reg = RK808_BUCK4_ON_VSEL_REG, | |
364 | .vsel_mask = RK808_BUCK4_VSEL_MASK, | |
365 | .enable_reg = RK808_DCDC_EN_REG, | |
366 | .enable_mask = BIT(3), | |
367 | .owner = THIS_MODULE, | |
368 | }, { | |
369 | .name = "LDO_REG1", | |
b8074eba | 370 | .supply_name = "vcc6", |
2cd64ae3 CZ |
371 | .id = RK808_ID_LDO1, |
372 | .ops = &rk808_reg_ops, | |
373 | .type = REGULATOR_VOLTAGE, | |
374 | .n_voltages = 17, | |
375 | .linear_ranges = rk808_ldo_voltage_ranges, | |
376 | .n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges), | |
377 | .vsel_reg = RK808_LDO1_ON_VSEL_REG, | |
378 | .vsel_mask = RK808_LDO_VSEL_MASK, | |
379 | .enable_reg = RK808_LDO_EN_REG, | |
380 | .enable_mask = BIT(0), | |
28249b0c | 381 | .enable_time = 400, |
2cd64ae3 CZ |
382 | .owner = THIS_MODULE, |
383 | }, { | |
384 | .name = "LDO_REG2", | |
b8074eba | 385 | .supply_name = "vcc6", |
2cd64ae3 CZ |
386 | .id = RK808_ID_LDO2, |
387 | .ops = &rk808_reg_ops, | |
388 | .type = REGULATOR_VOLTAGE, | |
389 | .n_voltages = 17, | |
390 | .linear_ranges = rk808_ldo_voltage_ranges, | |
391 | .n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges), | |
392 | .vsel_reg = RK808_LDO2_ON_VSEL_REG, | |
393 | .vsel_mask = RK808_LDO_VSEL_MASK, | |
394 | .enable_reg = RK808_LDO_EN_REG, | |
395 | .enable_mask = BIT(1), | |
28249b0c | 396 | .enable_time = 400, |
2cd64ae3 CZ |
397 | .owner = THIS_MODULE, |
398 | }, { | |
399 | .name = "LDO_REG3", | |
b8074eba | 400 | .supply_name = "vcc7", |
2cd64ae3 CZ |
401 | .id = RK808_ID_LDO3, |
402 | .ops = &rk808_reg_ops, | |
403 | .type = REGULATOR_VOLTAGE, | |
404 | .n_voltages = 16, | |
405 | .linear_ranges = rk808_ldo3_voltage_ranges, | |
406 | .n_linear_ranges = ARRAY_SIZE(rk808_ldo3_voltage_ranges), | |
407 | .vsel_reg = RK808_LDO3_ON_VSEL_REG, | |
408 | .vsel_mask = RK808_BUCK4_VSEL_MASK, | |
409 | .enable_reg = RK808_LDO_EN_REG, | |
410 | .enable_mask = BIT(2), | |
28249b0c | 411 | .enable_time = 400, |
2cd64ae3 CZ |
412 | .owner = THIS_MODULE, |
413 | }, { | |
414 | .name = "LDO_REG4", | |
b8074eba | 415 | .supply_name = "vcc9", |
2cd64ae3 CZ |
416 | .id = RK808_ID_LDO4, |
417 | .ops = &rk808_reg_ops, | |
418 | .type = REGULATOR_VOLTAGE, | |
419 | .n_voltages = 17, | |
420 | .linear_ranges = rk808_ldo_voltage_ranges, | |
421 | .n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges), | |
422 | .vsel_reg = RK808_LDO4_ON_VSEL_REG, | |
423 | .vsel_mask = RK808_LDO_VSEL_MASK, | |
424 | .enable_reg = RK808_LDO_EN_REG, | |
425 | .enable_mask = BIT(3), | |
28249b0c | 426 | .enable_time = 400, |
2cd64ae3 CZ |
427 | .owner = THIS_MODULE, |
428 | }, { | |
429 | .name = "LDO_REG5", | |
b8074eba | 430 | .supply_name = "vcc9", |
2cd64ae3 CZ |
431 | .id = RK808_ID_LDO5, |
432 | .ops = &rk808_reg_ops, | |
433 | .type = REGULATOR_VOLTAGE, | |
434 | .n_voltages = 17, | |
435 | .linear_ranges = rk808_ldo_voltage_ranges, | |
436 | .n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges), | |
437 | .vsel_reg = RK808_LDO5_ON_VSEL_REG, | |
438 | .vsel_mask = RK808_LDO_VSEL_MASK, | |
439 | .enable_reg = RK808_LDO_EN_REG, | |
440 | .enable_mask = BIT(4), | |
28249b0c | 441 | .enable_time = 400, |
2cd64ae3 CZ |
442 | .owner = THIS_MODULE, |
443 | }, { | |
444 | .name = "LDO_REG6", | |
b8074eba | 445 | .supply_name = "vcc10", |
2cd64ae3 CZ |
446 | .id = RK808_ID_LDO6, |
447 | .ops = &rk808_reg_ops, | |
448 | .type = REGULATOR_VOLTAGE, | |
449 | .n_voltages = 18, | |
450 | .linear_ranges = rk808_ldo6_voltage_ranges, | |
451 | .n_linear_ranges = ARRAY_SIZE(rk808_ldo6_voltage_ranges), | |
452 | .vsel_reg = RK808_LDO6_ON_VSEL_REG, | |
453 | .vsel_mask = RK808_LDO_VSEL_MASK, | |
454 | .enable_reg = RK808_LDO_EN_REG, | |
455 | .enable_mask = BIT(5), | |
28249b0c | 456 | .enable_time = 400, |
2cd64ae3 CZ |
457 | .owner = THIS_MODULE, |
458 | }, { | |
459 | .name = "LDO_REG7", | |
b8074eba | 460 | .supply_name = "vcc7", |
2cd64ae3 CZ |
461 | .id = RK808_ID_LDO7, |
462 | .ops = &rk808_reg_ops, | |
463 | .type = REGULATOR_VOLTAGE, | |
464 | .n_voltages = 18, | |
465 | .linear_ranges = rk808_ldo6_voltage_ranges, | |
466 | .n_linear_ranges = ARRAY_SIZE(rk808_ldo6_voltage_ranges), | |
467 | .vsel_reg = RK808_LDO7_ON_VSEL_REG, | |
468 | .vsel_mask = RK808_LDO_VSEL_MASK, | |
469 | .enable_reg = RK808_LDO_EN_REG, | |
470 | .enable_mask = BIT(6), | |
28249b0c | 471 | .enable_time = 400, |
2cd64ae3 CZ |
472 | .owner = THIS_MODULE, |
473 | }, { | |
474 | .name = "LDO_REG8", | |
b8074eba | 475 | .supply_name = "vcc11", |
2cd64ae3 CZ |
476 | .id = RK808_ID_LDO8, |
477 | .ops = &rk808_reg_ops, | |
478 | .type = REGULATOR_VOLTAGE, | |
479 | .n_voltages = 17, | |
480 | .linear_ranges = rk808_ldo_voltage_ranges, | |
481 | .n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges), | |
482 | .vsel_reg = RK808_LDO8_ON_VSEL_REG, | |
483 | .vsel_mask = RK808_LDO_VSEL_MASK, | |
484 | .enable_reg = RK808_LDO_EN_REG, | |
485 | .enable_mask = BIT(7), | |
28249b0c | 486 | .enable_time = 400, |
2cd64ae3 CZ |
487 | .owner = THIS_MODULE, |
488 | }, { | |
489 | .name = "SWITCH_REG1", | |
b8074eba | 490 | .supply_name = "vcc8", |
2cd64ae3 CZ |
491 | .id = RK808_ID_SWITCH1, |
492 | .ops = &rk808_switch_ops, | |
493 | .type = REGULATOR_VOLTAGE, | |
494 | .enable_reg = RK808_DCDC_EN_REG, | |
495 | .enable_mask = BIT(5), | |
496 | .owner = THIS_MODULE, | |
497 | }, { | |
498 | .name = "SWITCH_REG2", | |
b8074eba | 499 | .supply_name = "vcc12", |
2cd64ae3 CZ |
500 | .id = RK808_ID_SWITCH2, |
501 | .ops = &rk808_switch_ops, | |
502 | .type = REGULATOR_VOLTAGE, | |
503 | .enable_reg = RK808_DCDC_EN_REG, | |
504 | .enable_mask = BIT(6), | |
505 | .owner = THIS_MODULE, | |
506 | }, | |
507 | }; | |
508 | ||
509 | static struct of_regulator_match rk808_reg_matches[] = { | |
510 | [RK808_ID_DCDC1] = { .name = "DCDC_REG1" }, | |
511 | [RK808_ID_DCDC2] = { .name = "DCDC_REG2" }, | |
512 | [RK808_ID_DCDC3] = { .name = "DCDC_REG3" }, | |
513 | [RK808_ID_DCDC4] = { .name = "DCDC_REG4" }, | |
514 | [RK808_ID_LDO1] = { .name = "LDO_REG1" }, | |
515 | [RK808_ID_LDO2] = { .name = "LDO_REG2" }, | |
516 | [RK808_ID_LDO3] = { .name = "LDO_REG3" }, | |
517 | [RK808_ID_LDO4] = { .name = "LDO_REG4" }, | |
518 | [RK808_ID_LDO5] = { .name = "LDO_REG5" }, | |
519 | [RK808_ID_LDO6] = { .name = "LDO_REG6" }, | |
520 | [RK808_ID_LDO7] = { .name = "LDO_REG7" }, | |
521 | [RK808_ID_LDO8] = { .name = "LDO_REG8" }, | |
522 | [RK808_ID_SWITCH1] = { .name = "SWITCH_REG1" }, | |
523 | [RK808_ID_SWITCH2] = { .name = "SWITCH_REG2" }, | |
524 | }; | |
525 | ||
bad47ad2 CZ |
526 | static int rk808_regulator_dt_parse_pdata(struct device *dev, |
527 | struct device *client_dev, | |
528 | struct regmap *map, | |
529 | struct rk808_regulator_data *pdata) | |
530 | { | |
531 | struct device_node *np; | |
532 | int tmp, ret, i; | |
533 | ||
534 | np = of_get_child_by_name(client_dev->of_node, "regulators"); | |
535 | if (!np) | |
536 | return -ENXIO; | |
537 | ||
538 | ret = of_regulator_match(dev, np, rk808_reg_matches, | |
539 | RK808_NUM_REGULATORS); | |
540 | if (ret < 0) | |
541 | goto dt_parse_end; | |
542 | ||
543 | for (i = 0; i < ARRAY_SIZE(pdata->dvs_gpio); i++) { | |
a13eaf02 UKK |
544 | pdata->dvs_gpio[i] = |
545 | devm_gpiod_get_index_optional(client_dev, "dvs", i, | |
546 | GPIOD_OUT_LOW); | |
bad47ad2 | 547 | if (IS_ERR(pdata->dvs_gpio[i])) { |
a13eaf02 UKK |
548 | ret = PTR_ERR(pdata->dvs_gpio[i]); |
549 | dev_err(dev, "failed to get dvs%d gpio (%d)\n", i, ret); | |
550 | goto dt_parse_end; | |
551 | } | |
552 | ||
553 | if (!pdata->dvs_gpio[i]) { | |
bad47ad2 CZ |
554 | dev_warn(dev, "there is no dvs%d gpio\n", i); |
555 | continue; | |
556 | } | |
557 | ||
bad47ad2 CZ |
558 | tmp = i ? RK808_DVS2_POL : RK808_DVS1_POL; |
559 | ret = regmap_update_bits(map, RK808_IO_POL_REG, tmp, | |
560 | gpiod_is_active_low(pdata->dvs_gpio[i]) ? | |
561 | 0 : tmp); | |
562 | } | |
563 | ||
564 | dt_parse_end: | |
565 | of_node_put(np); | |
566 | return ret; | |
567 | } | |
568 | ||
2cd64ae3 CZ |
569 | static int rk808_regulator_probe(struct platform_device *pdev) |
570 | { | |
571 | struct rk808 *rk808 = dev_get_drvdata(pdev->dev.parent); | |
d76c333e | 572 | struct i2c_client *client = rk808->i2c; |
462004f1 | 573 | struct regulator_config config = {}; |
2cd64ae3 | 574 | struct regulator_dev *rk808_rdev; |
bad47ad2 | 575 | struct rk808_regulator_data *pdata; |
571a4010 | 576 | int ret, i; |
2cd64ae3 | 577 | |
bad47ad2 CZ |
578 | pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); |
579 | if (!pdata) | |
580 | return -ENOMEM; | |
2cd64ae3 | 581 | |
bad47ad2 CZ |
582 | ret = rk808_regulator_dt_parse_pdata(&pdev->dev, &client->dev, |
583 | rk808->regmap, pdata); | |
571a4010 | 584 | if (ret < 0) |
2cd64ae3 CZ |
585 | return ret; |
586 | ||
bad47ad2 CZ |
587 | platform_set_drvdata(pdev, pdata); |
588 | ||
2cd64ae3 CZ |
589 | /* Instantiate the regulators */ |
590 | for (i = 0; i < RK808_NUM_REGULATORS; i++) { | |
571a4010 CZ |
591 | if (!rk808_reg_matches[i].init_data || |
592 | !rk808_reg_matches[i].of_node) | |
2cd64ae3 CZ |
593 | continue; |
594 | ||
d76c333e | 595 | config.dev = &client->dev; |
bad47ad2 | 596 | config.driver_data = pdata; |
2cd64ae3 | 597 | config.regmap = rk808->regmap; |
571a4010 CZ |
598 | config.of_node = rk808_reg_matches[i].of_node; |
599 | config.init_data = rk808_reg_matches[i].init_data; | |
2cd64ae3 CZ |
600 | |
601 | rk808_rdev = devm_regulator_register(&pdev->dev, | |
602 | &rk808_reg[i], &config); | |
603 | if (IS_ERR(rk808_rdev)) { | |
d76c333e | 604 | dev_err(&client->dev, |
2cd64ae3 CZ |
605 | "failed to register %d regulator\n", i); |
606 | return PTR_ERR(rk808_rdev); | |
607 | } | |
2cd64ae3 | 608 | } |
571a4010 | 609 | |
2cd64ae3 CZ |
610 | return 0; |
611 | } | |
612 | ||
613 | static struct platform_driver rk808_regulator_driver = { | |
614 | .probe = rk808_regulator_probe, | |
615 | .driver = { | |
616 | .name = "rk808-regulator", | |
bad47ad2 | 617 | .owner = THIS_MODULE, |
2cd64ae3 CZ |
618 | }, |
619 | }; | |
620 | ||
621 | module_platform_driver(rk808_regulator_driver); | |
622 | ||
623 | MODULE_DESCRIPTION("regulator driver for the rk808 series PMICs"); | |
624 | MODULE_AUTHOR("Chris Zhong<zyw@rock-chips.com>"); | |
571a4010 | 625 | MODULE_AUTHOR("Zhang Qing<zhangqing@rock-chips.com>"); |
2cd64ae3 CZ |
626 | MODULE_LICENSE("GPL"); |
627 | MODULE_ALIAS("platform:rk808-regulator"); |