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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 | ||
9e9daa0a WE |
58 | #define RK8XX_DESC(_id, _match, _supply, _min, _max, _step, _vreg, \ |
59 | _vmask, _ereg, _emask, _etime) \ | |
60 | [_id] = { \ | |
61 | .name = (_match), \ | |
62 | .supply_name = (_supply), \ | |
63 | .of_match = of_match_ptr(_match), \ | |
64 | .regulators_node = of_match_ptr("regulators"), \ | |
65 | .type = REGULATOR_VOLTAGE, \ | |
66 | .id = (_id), \ | |
67 | .n_voltages = (((_max) - (_min)) / (_step) + 1), \ | |
68 | .owner = THIS_MODULE, \ | |
69 | .min_uV = (_min) * 1000, \ | |
70 | .uV_step = (_step) * 1000, \ | |
71 | .vsel_reg = (_vreg), \ | |
72 | .vsel_mask = (_vmask), \ | |
73 | .enable_reg = (_ereg), \ | |
74 | .enable_mask = (_emask), \ | |
75 | .enable_time = (_etime), \ | |
76 | .ops = &rk808_reg_ops, \ | |
77 | } | |
78 | ||
79 | #define RK8XX_DESC_SWITCH(_id, _match, _supply, _ereg, _emask) \ | |
80 | [_id] = { \ | |
81 | .name = (_match), \ | |
82 | .supply_name = (_supply), \ | |
83 | .of_match = of_match_ptr(_match), \ | |
84 | .regulators_node = of_match_ptr("regulators"), \ | |
85 | .type = REGULATOR_VOLTAGE, \ | |
86 | .id = (_id), \ | |
87 | .enable_reg = (_ereg), \ | |
88 | .enable_mask = (_emask), \ | |
89 | .owner = THIS_MODULE, \ | |
90 | .ops = &rk808_switch_ops \ | |
91 | } | |
92 | ||
93 | ||
bad47ad2 CZ |
94 | struct rk808_regulator_data { |
95 | struct gpio_desc *dvs_gpio[2]; | |
96 | }; | |
97 | ||
8af25227 DA |
98 | static const int rk808_buck_config_regs[] = { |
99 | RK808_BUCK1_CONFIG_REG, | |
100 | RK808_BUCK2_CONFIG_REG, | |
101 | RK808_BUCK3_CONFIG_REG, | |
102 | RK808_BUCK4_CONFIG_REG, | |
103 | }; | |
104 | ||
2cd64ae3 CZ |
105 | static const struct regulator_linear_range rk808_ldo3_voltage_ranges[] = { |
106 | REGULATOR_LINEAR_RANGE(800000, 0, 13, 100000), | |
107 | REGULATOR_LINEAR_RANGE(2500000, 15, 15, 0), | |
108 | }; | |
109 | ||
bad47ad2 CZ |
110 | static int rk808_buck1_2_get_voltage_sel_regmap(struct regulator_dev *rdev) |
111 | { | |
112 | struct rk808_regulator_data *pdata = rdev_get_drvdata(rdev); | |
113 | int id = rdev->desc->id - RK808_ID_DCDC1; | |
114 | struct gpio_desc *gpio = pdata->dvs_gpio[id]; | |
115 | unsigned int val; | |
116 | int ret; | |
117 | ||
a13eaf02 | 118 | if (!gpio || gpiod_get_value(gpio) == 0) |
bad47ad2 CZ |
119 | return regulator_get_voltage_sel_regmap(rdev); |
120 | ||
121 | ret = regmap_read(rdev->regmap, | |
122 | rdev->desc->vsel_reg + RK808_DVS_REG_OFFSET, | |
123 | &val); | |
124 | if (ret != 0) | |
125 | return ret; | |
126 | ||
127 | val &= rdev->desc->vsel_mask; | |
128 | val >>= ffs(rdev->desc->vsel_mask) - 1; | |
129 | ||
130 | return val; | |
131 | } | |
132 | ||
133 | static int rk808_buck1_2_i2c_set_voltage_sel(struct regulator_dev *rdev, | |
134 | unsigned sel) | |
135 | { | |
136 | int ret, delta_sel; | |
137 | unsigned int old_sel, tmp, val, mask = rdev->desc->vsel_mask; | |
138 | ||
139 | ret = regmap_read(rdev->regmap, rdev->desc->vsel_reg, &val); | |
140 | if (ret != 0) | |
141 | return ret; | |
142 | ||
143 | tmp = val & ~mask; | |
144 | old_sel = val & mask; | |
145 | old_sel >>= ffs(mask) - 1; | |
146 | delta_sel = sel - old_sel; | |
147 | ||
148 | /* | |
149 | * If directly modify the register to change the voltage, we will face | |
150 | * the risk of overshoot. Put it into a multi-step, can effectively | |
151 | * avoid this problem, a step is 100mv here. | |
152 | */ | |
153 | while (delta_sel > MAX_STEPS_ONE_TIME) { | |
154 | old_sel += MAX_STEPS_ONE_TIME; | |
155 | val = old_sel << (ffs(mask) - 1); | |
156 | val |= tmp; | |
157 | ||
158 | /* | |
159 | * i2c is 400kHz (2.5us per bit) and we must transmit _at least_ | |
160 | * 3 bytes (24 bits) plus start and stop so 26 bits. So we've | |
161 | * got more than 65 us between each voltage change and thus | |
162 | * won't ramp faster than ~1500 uV / us. | |
163 | */ | |
164 | ret = regmap_write(rdev->regmap, rdev->desc->vsel_reg, val); | |
165 | delta_sel = sel - old_sel; | |
166 | } | |
167 | ||
168 | sel <<= ffs(mask) - 1; | |
169 | val = tmp | sel; | |
170 | ret = regmap_write(rdev->regmap, rdev->desc->vsel_reg, val); | |
171 | ||
172 | /* | |
173 | * When we change the voltage register directly, the ramp rate is about | |
174 | * 100000uv/us, wait 1us to make sure the target voltage to be stable, | |
175 | * so we needn't wait extra time after that. | |
176 | */ | |
177 | udelay(1); | |
178 | ||
179 | return ret; | |
180 | } | |
181 | ||
182 | static int rk808_buck1_2_set_voltage_sel(struct regulator_dev *rdev, | |
183 | unsigned sel) | |
184 | { | |
185 | struct rk808_regulator_data *pdata = rdev_get_drvdata(rdev); | |
186 | int id = rdev->desc->id - RK808_ID_DCDC1; | |
187 | struct gpio_desc *gpio = pdata->dvs_gpio[id]; | |
188 | unsigned int reg = rdev->desc->vsel_reg; | |
189 | unsigned old_sel; | |
190 | int ret, gpio_level; | |
191 | ||
a13eaf02 | 192 | if (!gpio) |
bad47ad2 CZ |
193 | return rk808_buck1_2_i2c_set_voltage_sel(rdev, sel); |
194 | ||
195 | gpio_level = gpiod_get_value(gpio); | |
196 | if (gpio_level == 0) { | |
197 | reg += RK808_DVS_REG_OFFSET; | |
198 | ret = regmap_read(rdev->regmap, rdev->desc->vsel_reg, &old_sel); | |
199 | } else { | |
200 | ret = regmap_read(rdev->regmap, | |
201 | reg + RK808_DVS_REG_OFFSET, | |
202 | &old_sel); | |
203 | } | |
204 | ||
205 | if (ret != 0) | |
206 | return ret; | |
207 | ||
208 | sel <<= ffs(rdev->desc->vsel_mask) - 1; | |
209 | sel |= old_sel & ~rdev->desc->vsel_mask; | |
210 | ||
211 | ret = regmap_write(rdev->regmap, reg, sel); | |
212 | if (ret) | |
213 | return ret; | |
214 | ||
215 | gpiod_set_value(gpio, !gpio_level); | |
216 | ||
217 | return ret; | |
218 | } | |
219 | ||
220 | static int rk808_buck1_2_set_voltage_time_sel(struct regulator_dev *rdev, | |
221 | unsigned int old_selector, | |
222 | unsigned int new_selector) | |
223 | { | |
224 | struct rk808_regulator_data *pdata = rdev_get_drvdata(rdev); | |
225 | int id = rdev->desc->id - RK808_ID_DCDC1; | |
226 | struct gpio_desc *gpio = pdata->dvs_gpio[id]; | |
227 | ||
228 | /* if there is no dvs1/2 pin, we don't need wait extra time here. */ | |
a13eaf02 | 229 | if (!gpio) |
bad47ad2 CZ |
230 | return 0; |
231 | ||
232 | return regulator_set_voltage_time_sel(rdev, old_selector, new_selector); | |
233 | } | |
234 | ||
8af25227 DA |
235 | static int rk808_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay) |
236 | { | |
237 | unsigned int ramp_value = RK808_RAMP_RATE_10MV_PER_US; | |
238 | unsigned int reg = rk808_buck_config_regs[rdev->desc->id - | |
239 | RK808_ID_DCDC1]; | |
240 | ||
241 | switch (ramp_delay) { | |
242 | case 1 ... 2000: | |
243 | ramp_value = RK808_RAMP_RATE_2MV_PER_US; | |
244 | break; | |
245 | case 2001 ... 4000: | |
246 | ramp_value = RK808_RAMP_RATE_4MV_PER_US; | |
247 | break; | |
248 | case 4001 ... 6000: | |
249 | ramp_value = RK808_RAMP_RATE_6MV_PER_US; | |
250 | break; | |
251 | case 6001 ... 10000: | |
252 | break; | |
253 | default: | |
254 | pr_warn("%s ramp_delay: %d not supported, setting 10000\n", | |
255 | rdev->desc->name, ramp_delay); | |
256 | } | |
257 | ||
258 | return regmap_update_bits(rdev->regmap, reg, | |
259 | RK808_RAMP_RATE_MASK, ramp_value); | |
260 | } | |
261 | ||
5cb2f03c | 262 | static int rk808_set_suspend_voltage(struct regulator_dev *rdev, int uv) |
afcd666d WE |
263 | { |
264 | unsigned int reg; | |
265 | int sel = regulator_map_voltage_linear(rdev, uv, uv); | |
266 | ||
267 | if (sel < 0) | |
268 | return -EINVAL; | |
269 | ||
270 | reg = rdev->desc->vsel_reg + RK808_SLP_REG_OFFSET; | |
271 | ||
272 | return regmap_update_bits(rdev->regmap, reg, | |
273 | rdev->desc->vsel_mask, | |
274 | sel); | |
275 | } | |
276 | ||
129d7cf9 WE |
277 | static int rk808_set_suspend_voltage_range(struct regulator_dev *rdev, int uv) |
278 | { | |
279 | unsigned int reg; | |
280 | int sel = regulator_map_voltage_linear_range(rdev, uv, uv); | |
281 | ||
282 | if (sel < 0) | |
283 | return -EINVAL; | |
284 | ||
285 | reg = rdev->desc->vsel_reg + RK808_SLP_REG_OFFSET; | |
286 | ||
287 | return regmap_update_bits(rdev->regmap, reg, | |
288 | rdev->desc->vsel_mask, | |
289 | sel); | |
290 | } | |
291 | ||
5cb2f03c | 292 | static int rk808_set_suspend_enable(struct regulator_dev *rdev) |
251ce318 CZ |
293 | { |
294 | unsigned int reg; | |
295 | ||
296 | reg = rdev->desc->enable_reg + RK808_SLP_SET_OFF_REG_OFFSET; | |
297 | ||
298 | return regmap_update_bits(rdev->regmap, reg, | |
299 | rdev->desc->enable_mask, | |
300 | 0); | |
301 | } | |
302 | ||
5cb2f03c | 303 | static int rk808_set_suspend_disable(struct regulator_dev *rdev) |
251ce318 CZ |
304 | { |
305 | unsigned int reg; | |
306 | ||
307 | reg = rdev->desc->enable_reg + RK808_SLP_SET_OFF_REG_OFFSET; | |
308 | ||
309 | return regmap_update_bits(rdev->regmap, reg, | |
310 | rdev->desc->enable_mask, | |
311 | rdev->desc->enable_mask); | |
312 | } | |
313 | ||
8af25227 | 314 | static struct regulator_ops rk808_buck1_2_ops = { |
afcd666d WE |
315 | .list_voltage = regulator_list_voltage_linear, |
316 | .map_voltage = regulator_map_voltage_linear, | |
bad47ad2 CZ |
317 | .get_voltage_sel = rk808_buck1_2_get_voltage_sel_regmap, |
318 | .set_voltage_sel = rk808_buck1_2_set_voltage_sel, | |
319 | .set_voltage_time_sel = rk808_buck1_2_set_voltage_time_sel, | |
8af25227 DA |
320 | .enable = regulator_enable_regmap, |
321 | .disable = regulator_disable_regmap, | |
322 | .is_enabled = regulator_is_enabled_regmap, | |
323 | .set_ramp_delay = rk808_set_ramp_delay, | |
251ce318 CZ |
324 | .set_suspend_voltage = rk808_set_suspend_voltage, |
325 | .set_suspend_enable = rk808_set_suspend_enable, | |
326 | .set_suspend_disable = rk808_set_suspend_disable, | |
8af25227 DA |
327 | }; |
328 | ||
2cd64ae3 | 329 | static struct regulator_ops rk808_reg_ops = { |
afcd666d WE |
330 | .list_voltage = regulator_list_voltage_linear, |
331 | .map_voltage = regulator_map_voltage_linear, | |
332 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
333 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
334 | .enable = regulator_enable_regmap, | |
335 | .disable = regulator_disable_regmap, | |
336 | .is_enabled = regulator_is_enabled_regmap, | |
337 | .set_suspend_voltage = rk808_set_suspend_voltage, | |
338 | .set_suspend_enable = rk808_set_suspend_enable, | |
339 | .set_suspend_disable = rk808_set_suspend_disable, | |
340 | }; | |
341 | ||
129d7cf9 WE |
342 | static struct regulator_ops rk808_reg_ops_ranges = { |
343 | .list_voltage = regulator_list_voltage_linear_range, | |
344 | .map_voltage = regulator_map_voltage_linear_range, | |
345 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
346 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
347 | .enable = regulator_enable_regmap, | |
348 | .disable = regulator_disable_regmap, | |
349 | .is_enabled = regulator_is_enabled_regmap, | |
350 | .set_suspend_voltage = rk808_set_suspend_voltage_range, | |
351 | .set_suspend_enable = rk808_set_suspend_enable, | |
352 | .set_suspend_disable = rk808_set_suspend_disable, | |
353 | }; | |
354 | ||
2cd64ae3 | 355 | static struct regulator_ops rk808_switch_ops = { |
251ce318 CZ |
356 | .enable = regulator_enable_regmap, |
357 | .disable = regulator_disable_regmap, | |
358 | .is_enabled = regulator_is_enabled_regmap, | |
359 | .set_suspend_enable = rk808_set_suspend_enable, | |
360 | .set_suspend_disable = rk808_set_suspend_disable, | |
2cd64ae3 CZ |
361 | }; |
362 | ||
363 | static const struct regulator_desc rk808_reg[] = { | |
364 | { | |
365 | .name = "DCDC_REG1", | |
b8074eba | 366 | .supply_name = "vcc1", |
9e9daa0a WE |
367 | .of_match = of_match_ptr("DCDC_REG1"), |
368 | .regulators_node = of_match_ptr("regulators"), | |
2cd64ae3 | 369 | .id = RK808_ID_DCDC1, |
8af25227 | 370 | .ops = &rk808_buck1_2_ops, |
2cd64ae3 | 371 | .type = REGULATOR_VOLTAGE, |
afcd666d WE |
372 | .min_uV = 712500, |
373 | .uV_step = 12500, | |
2cd64ae3 | 374 | .n_voltages = 64, |
2cd64ae3 CZ |
375 | .vsel_reg = RK808_BUCK1_ON_VSEL_REG, |
376 | .vsel_mask = RK808_BUCK_VSEL_MASK, | |
377 | .enable_reg = RK808_DCDC_EN_REG, | |
378 | .enable_mask = BIT(0), | |
379 | .owner = THIS_MODULE, | |
380 | }, { | |
381 | .name = "DCDC_REG2", | |
b8074eba | 382 | .supply_name = "vcc2", |
9e9daa0a WE |
383 | .of_match = of_match_ptr("DCDC_REG2"), |
384 | .regulators_node = of_match_ptr("regulators"), | |
2cd64ae3 | 385 | .id = RK808_ID_DCDC2, |
8af25227 | 386 | .ops = &rk808_buck1_2_ops, |
2cd64ae3 | 387 | .type = REGULATOR_VOLTAGE, |
afcd666d WE |
388 | .min_uV = 712500, |
389 | .uV_step = 12500, | |
2cd64ae3 | 390 | .n_voltages = 64, |
2cd64ae3 CZ |
391 | .vsel_reg = RK808_BUCK2_ON_VSEL_REG, |
392 | .vsel_mask = RK808_BUCK_VSEL_MASK, | |
393 | .enable_reg = RK808_DCDC_EN_REG, | |
394 | .enable_mask = BIT(1), | |
395 | .owner = THIS_MODULE, | |
396 | }, { | |
397 | .name = "DCDC_REG3", | |
b8074eba | 398 | .supply_name = "vcc3", |
9e9daa0a WE |
399 | .of_match = of_match_ptr("DCDC_REG3"), |
400 | .regulators_node = of_match_ptr("regulators"), | |
2cd64ae3 CZ |
401 | .id = RK808_ID_DCDC3, |
402 | .ops = &rk808_switch_ops, | |
403 | .type = REGULATOR_VOLTAGE, | |
404 | .n_voltages = 1, | |
405 | .enable_reg = RK808_DCDC_EN_REG, | |
406 | .enable_mask = BIT(2), | |
407 | .owner = THIS_MODULE, | |
9e9daa0a WE |
408 | }, |
409 | RK8XX_DESC(RK808_ID_DCDC4, "DCDC_REG4", "vcc4", 1800, 3300, 100, | |
410 | RK808_BUCK4_ON_VSEL_REG, RK808_BUCK4_VSEL_MASK, | |
411 | RK808_DCDC_EN_REG, BIT(3), 0), | |
412 | RK8XX_DESC(RK808_ID_LDO1, "LDO_REG1", "vcc6", 1800, 3400, 100, | |
413 | RK808_LDO1_ON_VSEL_REG, RK808_LDO_VSEL_MASK, RK808_LDO_EN_REG, | |
414 | BIT(0), 400), | |
415 | RK8XX_DESC(RK808_ID_LDO2, "LDO_REG2", "vcc6", 1800, 3400, 100, | |
416 | RK808_LDO2_ON_VSEL_REG, RK808_LDO_VSEL_MASK, RK808_LDO_EN_REG, | |
417 | BIT(1), 400), | |
418 | { | |
2cd64ae3 | 419 | .name = "LDO_REG3", |
b8074eba | 420 | .supply_name = "vcc7", |
9e9daa0a WE |
421 | .of_match = of_match_ptr("LDO_REG3"), |
422 | .regulators_node = of_match_ptr("regulators"), | |
2cd64ae3 | 423 | .id = RK808_ID_LDO3, |
129d7cf9 | 424 | .ops = &rk808_reg_ops_ranges, |
2cd64ae3 CZ |
425 | .type = REGULATOR_VOLTAGE, |
426 | .n_voltages = 16, | |
427 | .linear_ranges = rk808_ldo3_voltage_ranges, | |
428 | .n_linear_ranges = ARRAY_SIZE(rk808_ldo3_voltage_ranges), | |
429 | .vsel_reg = RK808_LDO3_ON_VSEL_REG, | |
430 | .vsel_mask = RK808_BUCK4_VSEL_MASK, | |
431 | .enable_reg = RK808_LDO_EN_REG, | |
432 | .enable_mask = BIT(2), | |
28249b0c | 433 | .enable_time = 400, |
2cd64ae3 | 434 | .owner = THIS_MODULE, |
2cd64ae3 | 435 | }, |
9e9daa0a WE |
436 | RK8XX_DESC(RK808_ID_LDO4, "LDO_REG4", "vcc9", 1800, 3400, 100, |
437 | RK808_LDO4_ON_VSEL_REG, RK808_LDO_VSEL_MASK, RK808_LDO_EN_REG, | |
438 | BIT(3), 400), | |
439 | RK8XX_DESC(RK808_ID_LDO5, "LDO_REG5", "vcc9", 1800, 3400, 100, | |
440 | RK808_LDO5_ON_VSEL_REG, RK808_LDO_VSEL_MASK, RK808_LDO_EN_REG, | |
441 | BIT(4), 400), | |
442 | RK8XX_DESC(RK808_ID_LDO6, "LDO_REG6", "vcc10", 800, 2500, 100, | |
443 | RK808_LDO6_ON_VSEL_REG, RK808_LDO_VSEL_MASK, RK808_LDO_EN_REG, | |
444 | BIT(5), 400), | |
445 | RK8XX_DESC(RK808_ID_LDO7, "LDO_REG7", "vcc7", 800, 2500, 100, | |
446 | RK808_LDO7_ON_VSEL_REG, RK808_LDO_VSEL_MASK, RK808_LDO_EN_REG, | |
447 | BIT(6), 400), | |
448 | RK8XX_DESC(RK808_ID_LDO8, "LDO_REG8", "vcc11", 1800, 3400, 100, | |
449 | RK808_LDO8_ON_VSEL_REG, RK808_LDO_VSEL_MASK, RK808_LDO_EN_REG, | |
450 | BIT(7), 400), | |
451 | RK8XX_DESC_SWITCH(RK808_ID_SWITCH1, "SWITCH_REG1", "vcc8", | |
452 | RK808_DCDC_EN_REG, BIT(5)), | |
453 | RK8XX_DESC_SWITCH(RK808_ID_SWITCH2, "SWITCH_REG2", "vcc12", | |
454 | RK808_DCDC_EN_REG, BIT(6)), | |
2cd64ae3 CZ |
455 | }; |
456 | ||
bad47ad2 CZ |
457 | static int rk808_regulator_dt_parse_pdata(struct device *dev, |
458 | struct device *client_dev, | |
459 | struct regmap *map, | |
460 | struct rk808_regulator_data *pdata) | |
461 | { | |
462 | struct device_node *np; | |
9e9daa0a | 463 | int tmp, ret = 0, i; |
bad47ad2 CZ |
464 | |
465 | np = of_get_child_by_name(client_dev->of_node, "regulators"); | |
466 | if (!np) | |
467 | return -ENXIO; | |
468 | ||
bad47ad2 | 469 | for (i = 0; i < ARRAY_SIZE(pdata->dvs_gpio); i++) { |
a13eaf02 UKK |
470 | pdata->dvs_gpio[i] = |
471 | devm_gpiod_get_index_optional(client_dev, "dvs", i, | |
472 | GPIOD_OUT_LOW); | |
bad47ad2 | 473 | if (IS_ERR(pdata->dvs_gpio[i])) { |
a13eaf02 UKK |
474 | ret = PTR_ERR(pdata->dvs_gpio[i]); |
475 | dev_err(dev, "failed to get dvs%d gpio (%d)\n", i, ret); | |
476 | goto dt_parse_end; | |
477 | } | |
478 | ||
479 | if (!pdata->dvs_gpio[i]) { | |
bad47ad2 CZ |
480 | dev_warn(dev, "there is no dvs%d gpio\n", i); |
481 | continue; | |
482 | } | |
483 | ||
bad47ad2 CZ |
484 | tmp = i ? RK808_DVS2_POL : RK808_DVS1_POL; |
485 | ret = regmap_update_bits(map, RK808_IO_POL_REG, tmp, | |
486 | gpiod_is_active_low(pdata->dvs_gpio[i]) ? | |
487 | 0 : tmp); | |
488 | } | |
489 | ||
490 | dt_parse_end: | |
491 | of_node_put(np); | |
492 | return ret; | |
493 | } | |
494 | ||
2cd64ae3 CZ |
495 | static int rk808_regulator_probe(struct platform_device *pdev) |
496 | { | |
497 | struct rk808 *rk808 = dev_get_drvdata(pdev->dev.parent); | |
d76c333e | 498 | struct i2c_client *client = rk808->i2c; |
462004f1 | 499 | struct regulator_config config = {}; |
2cd64ae3 | 500 | struct regulator_dev *rk808_rdev; |
bad47ad2 | 501 | struct rk808_regulator_data *pdata; |
571a4010 | 502 | int ret, i; |
2cd64ae3 | 503 | |
bad47ad2 CZ |
504 | pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); |
505 | if (!pdata) | |
506 | return -ENOMEM; | |
2cd64ae3 | 507 | |
bad47ad2 CZ |
508 | ret = rk808_regulator_dt_parse_pdata(&pdev->dev, &client->dev, |
509 | rk808->regmap, pdata); | |
571a4010 | 510 | if (ret < 0) |
2cd64ae3 CZ |
511 | return ret; |
512 | ||
bad47ad2 CZ |
513 | platform_set_drvdata(pdev, pdata); |
514 | ||
9e9daa0a WE |
515 | config.dev = &client->dev; |
516 | config.driver_data = pdata; | |
517 | config.regmap = rk808->regmap; | |
518 | ||
2cd64ae3 CZ |
519 | /* Instantiate the regulators */ |
520 | for (i = 0; i < RK808_NUM_REGULATORS; i++) { | |
2cd64ae3 CZ |
521 | rk808_rdev = devm_regulator_register(&pdev->dev, |
522 | &rk808_reg[i], &config); | |
523 | if (IS_ERR(rk808_rdev)) { | |
d76c333e | 524 | dev_err(&client->dev, |
2cd64ae3 CZ |
525 | "failed to register %d regulator\n", i); |
526 | return PTR_ERR(rk808_rdev); | |
527 | } | |
2cd64ae3 | 528 | } |
571a4010 | 529 | |
2cd64ae3 CZ |
530 | return 0; |
531 | } | |
532 | ||
533 | static struct platform_driver rk808_regulator_driver = { | |
534 | .probe = rk808_regulator_probe, | |
535 | .driver = { | |
536 | .name = "rk808-regulator", | |
bad47ad2 | 537 | .owner = THIS_MODULE, |
2cd64ae3 CZ |
538 | }, |
539 | }; | |
540 | ||
541 | module_platform_driver(rk808_regulator_driver); | |
542 | ||
543 | MODULE_DESCRIPTION("regulator driver for the rk808 series PMICs"); | |
544 | MODULE_AUTHOR("Chris Zhong<zyw@rock-chips.com>"); | |
571a4010 | 545 | MODULE_AUTHOR("Zhang Qing<zhangqing@rock-chips.com>"); |
2cd64ae3 CZ |
546 | MODULE_LICENSE("GPL"); |
547 | MODULE_ALIAS("platform:rk808-regulator"); |