1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2015 Google, Inc
4 * Written by Simon Glass <sjg@chromium.org>
6 * Based on Rockchip's drivers/power/pmic/pmic_rk808.c:
7 * Copyright (C) 2012 rockchips
8 * zyw <zyw@rock-chips.com>
14 #include <power/rk8xx_pmic.h>
15 #include <power/pmic.h>
16 #include <power/regulator.h>
18 #ifndef CONFIG_SPL_BUILD
22 /* Field Definitions */
23 #define RK808_BUCK_VSEL_MASK 0x3f
24 #define RK808_BUCK4_VSEL_MASK 0xf
25 #define RK808_LDO_VSEL_MASK 0x1f
27 #define RK818_BUCK_VSEL_MASK 0x3f
28 #define RK818_BUCK4_VSEL_MASK 0x1f
29 #define RK818_LDO_VSEL_MASK 0x1f
30 #define RK818_LDO3_ON_VSEL_MASK 0xf
31 #define RK818_BOOST_ON_VSEL_MASK 0xe0
32 #define RK818_USB_ILIM_SEL_MASK 0x0f
33 #define RK818_USB_CHG_SD_VSEL_MASK 0x70
36 struct rk8xx_reg_info {
43 static const struct rk8xx_reg_info rk808_buck[] = {
44 { 712500, 12500, REG_BUCK1_ON_VSEL, RK808_BUCK_VSEL_MASK, },
45 { 712500, 12500, REG_BUCK2_ON_VSEL, RK808_BUCK_VSEL_MASK, },
46 { 712500, 12500, -1, RK808_BUCK_VSEL_MASK, },
47 { 1800000, 100000, REG_BUCK4_ON_VSEL, RK808_BUCK4_VSEL_MASK, },
50 static const struct rk8xx_reg_info rk818_buck[] = {
51 { 712500, 12500, REG_BUCK1_ON_VSEL, RK818_BUCK_VSEL_MASK, },
52 { 712500, 12500, REG_BUCK2_ON_VSEL, RK818_BUCK_VSEL_MASK, },
53 { 712500, 12500, -1, RK818_BUCK_VSEL_MASK, },
54 { 1800000, 100000, REG_BUCK4_ON_VSEL, RK818_BUCK4_VSEL_MASK, },
58 static const struct rk8xx_reg_info rk808_ldo[] = {
59 { 1800000, 100000, REG_LDO1_ON_VSEL, RK808_LDO_VSEL_MASK, },
60 { 1800000, 100000, REG_LDO2_ON_VSEL, RK808_LDO_VSEL_MASK, },
61 { 800000, 100000, REG_LDO3_ON_VSEL, RK808_BUCK4_VSEL_MASK, },
62 { 1800000, 100000, REG_LDO4_ON_VSEL, RK808_LDO_VSEL_MASK, },
63 { 1800000, 100000, REG_LDO5_ON_VSEL, RK808_LDO_VSEL_MASK, },
64 { 800000, 100000, REG_LDO6_ON_VSEL, RK808_LDO_VSEL_MASK, },
65 { 800000, 100000, REG_LDO7_ON_VSEL, RK808_LDO_VSEL_MASK, },
66 { 1800000, 100000, REG_LDO8_ON_VSEL, RK808_LDO_VSEL_MASK, },
69 static const struct rk8xx_reg_info rk818_ldo[] = {
70 { 1800000, 100000, REG_LDO1_ON_VSEL, RK818_LDO_VSEL_MASK, },
71 { 1800000, 100000, REG_LDO2_ON_VSEL, RK818_LDO_VSEL_MASK, },
72 { 800000, 100000, REG_LDO3_ON_VSEL, RK818_LDO3_ON_VSEL_MASK, },
73 { 1800000, 100000, REG_LDO4_ON_VSEL, RK818_LDO_VSEL_MASK, },
74 { 1800000, 100000, REG_LDO5_ON_VSEL, RK818_LDO_VSEL_MASK, },
75 { 800000, 100000, REG_LDO6_ON_VSEL, RK818_LDO_VSEL_MASK, },
76 { 800000, 100000, REG_LDO7_ON_VSEL, RK818_LDO_VSEL_MASK, },
77 { 1800000, 100000, REG_LDO8_ON_VSEL, RK818_LDO_VSEL_MASK, },
81 static const u16 rk818_chrg_cur_input_array[] = {
82 450, 800, 850, 1000, 1250, 1500, 1750, 2000, 2250, 2500, 2750, 3000
85 static const uint rk818_chrg_shutdown_vsel_array[] = {
86 2780000, 2850000, 2920000, 2990000, 3060000, 3130000, 3190000, 3260000
89 static const struct rk8xx_reg_info *get_buck_reg(struct udevice *pmic,
92 struct rk8xx_priv *priv = dev_get_priv(pmic);
93 switch (priv->variant) {
95 return &rk818_buck[num];
97 return &rk808_buck[num];
101 static int _buck_set_value(struct udevice *pmic, int buck, int uvolt)
103 const struct rk8xx_reg_info *info = get_buck_reg(pmic, buck - 1);
104 int mask = info->vsel_mask;
107 if (info->vsel_reg == -1)
109 val = (uvolt - info->min_uv) / info->step_uv;
110 debug("%s: reg=%x, mask=%x, val=%x\n", __func__, info->vsel_reg, mask,
113 return pmic_clrsetbits(pmic, info->vsel_reg, mask, val);
116 static int _buck_set_enable(struct udevice *pmic, int buck, bool enable)
124 ret = pmic_clrsetbits(pmic, REG_DCDC_ILMAX, 0, 3 << (buck * 2));
127 ret = pmic_clrsetbits(pmic, REG_DCDC_UV_ACT, 1 << buck, 0);
132 return pmic_clrsetbits(pmic, REG_DCDC_EN, mask, enable ? mask : 0);
136 static const struct rk8xx_reg_info *get_ldo_reg(struct udevice *pmic,
139 struct rk8xx_priv *priv = dev_get_priv(pmic);
140 switch (priv->variant) {
142 return &rk818_ldo[num];
144 return &rk808_ldo[num];
148 static int buck_get_value(struct udevice *dev)
150 int buck = dev->driver_data - 1;
151 const struct rk8xx_reg_info *info = get_buck_reg(dev->parent, buck);
152 int mask = info->vsel_mask;
155 if (info->vsel_reg == -1)
157 ret = pmic_reg_read(dev->parent, info->vsel_reg);
162 return info->min_uv + val * info->step_uv;
165 static int buck_set_value(struct udevice *dev, int uvolt)
167 int buck = dev->driver_data;
169 return _buck_set_value(dev->parent, buck, uvolt);
172 static int buck_set_enable(struct udevice *dev, bool enable)
174 int buck = dev->driver_data;
176 return _buck_set_enable(dev->parent, buck, enable);
179 static int buck_get_enable(struct udevice *dev)
181 int buck = dev->driver_data - 1;
187 ret = pmic_reg_read(dev->parent, REG_DCDC_EN);
191 return ret & mask ? true : false;
194 static int ldo_get_value(struct udevice *dev)
196 int ldo = dev->driver_data - 1;
197 const struct rk8xx_reg_info *info = get_ldo_reg(dev->parent, ldo);
198 int mask = info->vsel_mask;
201 if (info->vsel_reg == -1)
203 ret = pmic_reg_read(dev->parent, info->vsel_reg);
208 return info->min_uv + val * info->step_uv;
211 static int ldo_set_value(struct udevice *dev, int uvolt)
213 int ldo = dev->driver_data - 1;
214 const struct rk8xx_reg_info *info = get_ldo_reg(dev->parent, ldo);
215 int mask = info->vsel_mask;
218 if (info->vsel_reg == -1)
220 val = (uvolt - info->min_uv) / info->step_uv;
221 debug("%s: reg=%x, mask=%x, val=%x\n", __func__, info->vsel_reg, mask,
224 return pmic_clrsetbits(dev->parent, info->vsel_reg, mask, val);
227 static int ldo_set_enable(struct udevice *dev, bool enable)
229 int ldo = dev->driver_data - 1;
234 return pmic_clrsetbits(dev->parent, REG_LDO_EN, mask,
238 static int ldo_get_enable(struct udevice *dev)
240 int ldo = dev->driver_data - 1;
246 ret = pmic_reg_read(dev->parent, REG_LDO_EN);
250 return ret & mask ? true : false;
253 static int switch_set_enable(struct udevice *dev, bool enable)
255 int sw = dev->driver_data - 1;
258 mask = 1 << (sw + 5);
260 return pmic_clrsetbits(dev->parent, REG_DCDC_EN, mask,
264 static int switch_get_enable(struct udevice *dev)
266 int sw = dev->driver_data - 1;
270 mask = 1 << (sw + 5);
272 ret = pmic_reg_read(dev->parent, REG_DCDC_EN);
276 return ret & mask ? true : false;
279 static int rk8xx_buck_probe(struct udevice *dev)
281 struct dm_regulator_uclass_platdata *uc_pdata;
283 uc_pdata = dev_get_uclass_platdata(dev);
285 uc_pdata->type = REGULATOR_TYPE_BUCK;
286 uc_pdata->mode_count = 0;
291 static int rk8xx_ldo_probe(struct udevice *dev)
293 struct dm_regulator_uclass_platdata *uc_pdata;
295 uc_pdata = dev_get_uclass_platdata(dev);
297 uc_pdata->type = REGULATOR_TYPE_LDO;
298 uc_pdata->mode_count = 0;
303 static int rk8xx_switch_probe(struct udevice *dev)
305 struct dm_regulator_uclass_platdata *uc_pdata;
307 uc_pdata = dev_get_uclass_platdata(dev);
309 uc_pdata->type = REGULATOR_TYPE_FIXED;
310 uc_pdata->mode_count = 0;
315 static const struct dm_regulator_ops rk8xx_buck_ops = {
316 .get_value = buck_get_value,
317 .set_value = buck_set_value,
318 .get_enable = buck_get_enable,
319 .set_enable = buck_set_enable,
322 static const struct dm_regulator_ops rk8xx_ldo_ops = {
323 .get_value = ldo_get_value,
324 .set_value = ldo_set_value,
325 .get_enable = ldo_get_enable,
326 .set_enable = ldo_set_enable,
329 static const struct dm_regulator_ops rk8xx_switch_ops = {
330 .get_enable = switch_get_enable,
331 .set_enable = switch_set_enable,
334 U_BOOT_DRIVER(rk8xx_buck) = {
335 .name = "rk8xx_buck",
336 .id = UCLASS_REGULATOR,
337 .ops = &rk8xx_buck_ops,
338 .probe = rk8xx_buck_probe,
341 U_BOOT_DRIVER(rk8xx_ldo) = {
343 .id = UCLASS_REGULATOR,
344 .ops = &rk8xx_ldo_ops,
345 .probe = rk8xx_ldo_probe,
348 U_BOOT_DRIVER(rk8xx_switch) = {
349 .name = "rk8xx_switch",
350 .id = UCLASS_REGULATOR,
351 .ops = &rk8xx_switch_ops,
352 .probe = rk8xx_switch_probe,
356 int rk8xx_spl_configure_buck(struct udevice *pmic, int buck, int uvolt)
360 ret = _buck_set_value(pmic, buck, uvolt);
364 return _buck_set_enable(pmic, buck, true);
367 int rk818_spl_configure_usb_input_current(struct udevice *pmic, int current_ma)
371 for (i = 0; i < ARRAY_SIZE(rk818_chrg_cur_input_array); i++)
372 if (current_ma <= rk818_chrg_cur_input_array[i])
375 return pmic_clrsetbits(pmic, REG_USB_CTRL, RK818_USB_ILIM_SEL_MASK, i);
378 int rk818_spl_configure_usb_chrg_shutdown(struct udevice *pmic, int uvolt)
382 for (i = 0; i < ARRAY_SIZE(rk818_chrg_shutdown_vsel_array); i++)
383 if (uvolt <= rk818_chrg_shutdown_vsel_array[i])
386 return pmic_clrsetbits(pmic, REG_USB_CTRL, RK818_USB_CHG_SD_VSEL_MASK,