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_act8846.c:
7 * Copyright (C) 2012 rockchips
8 * zyw <zyw@rock-chips.com>
14 #include <power/act8846_pmic.h>
15 #include <power/pmic.h>
16 #include <power/regulator.h>
18 static const u16 voltage_map[] = {
19 600, 625, 650, 675, 700, 725, 750, 775,
20 800, 825, 850, 875, 900, 925, 950, 975,
21 1000, 1025, 1050, 1075, 1100, 1125, 1150, 1175,
22 1200, 1250, 1300, 1350, 1400, 1450, 1500, 1550,
23 1600, 1650, 1700, 1750, 1800, 1850, 1900, 1950,
24 2000, 2050, 2100, 2150, 2200, 2250, 2300, 2350,
25 2400, 2500, 2600, 2700, 2800, 2900, 3000, 3100,
26 3200, 3300, 3400, 3500, 3600, 3700, 3800, 3900,
62 static const u8 addr_vol[] = {
63 0, REG1_VOL, REG2_VOL0, REG3_VOL0, REG4_VOL0,
64 REG5_VOL, REG6_VOL, REG7_VOL, REG8_VOL, REG9_VOL,
65 REG10_VOL, REG11_VOL, REG12_VOL,
68 static const u8 addr_ctl[] = {
69 0, REG1_CTL, REG2_CTL, REG3_CTL, REG4_CTL,
70 REG5_CTL, REG6_CTL, REG7_CTL, REG8_CTL, REG9_CTL,
71 REG10_CTL, REG11_CTL, REG12_CTL,
74 static int check_volt_table(const u16 *volt_table, int uvolt)
78 for (i = VOL_MIN_IDX; i < VOL_MAX_IDX; i++) {
79 if (uvolt <= (volt_table[i] * 1000))
85 static int reg_get_value(struct udevice *dev)
87 int reg = dev->driver_data;
90 ret = pmic_reg_read(dev->parent, addr_vol[reg]);
94 return voltage_map[ret & LDO_VOL_MASK] * 1000;
97 static int reg_set_value(struct udevice *dev, int uvolt)
99 int reg = dev->driver_data;
102 val = check_volt_table(voltage_map, uvolt);
106 return pmic_clrsetbits(dev->parent, addr_vol[reg], LDO_VOL_MASK, val);
109 static int reg_set_enable(struct udevice *dev, bool enable)
111 int reg = dev->driver_data;
113 return pmic_clrsetbits(dev->parent, addr_ctl[reg], LDO_EN_MASK,
114 enable ? LDO_EN_MASK : 0);
117 static int reg_get_enable(struct udevice *dev)
119 int reg = dev->driver_data;
122 ret = pmic_reg_read(dev->parent, addr_ctl[reg]);
126 return ret & LDO_EN_MASK ? true : false;
129 static int act8846_reg_probe(struct udevice *dev)
131 struct dm_regulator_uclass_platdata *uc_pdata;
132 int reg = dev->driver_data;
134 uc_pdata = dev_get_uclass_platdata(dev);
136 uc_pdata->type = reg <= 4 ? REGULATOR_TYPE_BUCK : REGULATOR_TYPE_LDO;
137 uc_pdata->mode_count = 0;
142 static const struct dm_regulator_ops act8846_reg_ops = {
143 .get_value = reg_get_value,
144 .set_value = reg_set_value,
145 .get_enable = reg_get_enable,
146 .set_enable = reg_set_enable,
149 U_BOOT_DRIVER(act8846_buck) = {
150 .name = "act8846_reg",
151 .id = UCLASS_REGULATOR,
152 .ops = &act8846_reg_ops,
153 .probe = act8846_reg_probe,