^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) // MP8867/MP8869 regulator driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) // Copyright (C) 2020 Synaptics Incorporated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) // Author: Jisheng Zhang <jszhang@kernel.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/gpio/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/of_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/regulator/driver.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/regulator/of_regulator.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define MP886X_VSEL 0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define MP886X_V_BOOT (1 << 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define MP886X_SYSCNTLREG1 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define MP886X_MODE (1 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define MP886X_SLEW_SHIFT 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define MP886X_SLEW_MASK (0x7 << MP886X_SLEW_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define MP886X_GO (1 << 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define MP886X_EN (1 << 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define MP8869_SYSCNTLREG2 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) struct mp886x_cfg_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) const struct regulator_ops *rops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) const int slew_rates[8];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) const int switch_freq[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) const u8 fs_reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) const u8 fs_shift;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct mp886x_device_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct regulator_desc desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct regulator_init_data *regulator;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) struct gpio_desc *en_gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) const struct mp886x_cfg_info *ci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) u32 r[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) unsigned int sel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static int mp886x_set_ramp(struct regulator_dev *rdev, int ramp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) struct mp886x_device_info *di = rdev_get_drvdata(rdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) const struct mp886x_cfg_info *ci = di->ci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) int reg = -1, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) for (i = 0; i < ARRAY_SIZE(ci->slew_rates); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) if (ramp <= ci->slew_rates[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) reg = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) if (reg < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) dev_err(di->dev, "unsupported ramp value %d\n", ramp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) return regmap_update_bits(rdev->regmap, MP886X_SYSCNTLREG1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) MP886X_SLEW_MASK, reg << MP886X_SLEW_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) static void mp886x_set_switch_freq(struct mp886x_device_info *di,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct regmap *regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) u32 freq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) const struct mp886x_cfg_info *ci = di->ci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) for (i = 0; i < ARRAY_SIZE(ci->switch_freq); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) if (freq == ci->switch_freq[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) regmap_update_bits(regmap, ci->fs_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 0x3 << ci->fs_shift, i << ci->fs_shift);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) dev_err(di->dev, "invalid frequency %d\n", freq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) static int mp886x_set_mode(struct regulator_dev *rdev, unsigned int mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) switch (mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) case REGULATOR_MODE_FAST:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) regmap_update_bits(rdev->regmap, MP886X_SYSCNTLREG1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) MP886X_MODE, MP886X_MODE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) case REGULATOR_MODE_NORMAL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) regmap_update_bits(rdev->regmap, MP886X_SYSCNTLREG1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) MP886X_MODE, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) static unsigned int mp886x_get_mode(struct regulator_dev *rdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) u32 val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) ret = regmap_read(rdev->regmap, MP886X_SYSCNTLREG1, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) if (val & MP886X_MODE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) return REGULATOR_MODE_FAST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) return REGULATOR_MODE_NORMAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) static int mp8869_set_voltage_sel(struct regulator_dev *rdev, unsigned int sel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) ret = regmap_update_bits(rdev->regmap, MP886X_SYSCNTLREG1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) MP886X_GO, MP886X_GO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) sel <<= ffs(rdev->desc->vsel_mask) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) return regmap_update_bits(rdev->regmap, rdev->desc->vsel_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) MP886X_V_BOOT | rdev->desc->vsel_mask, sel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) static inline unsigned int mp8869_scale(unsigned int uv, u32 r1, u32 r2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) u32 tmp = uv * r1 / r2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) return uv + tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) static int mp8869_get_voltage_sel(struct regulator_dev *rdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) struct mp886x_device_info *di = rdev_get_drvdata(rdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) int ret, uv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) bool fbloop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) ret = regmap_read(rdev->regmap, rdev->desc->vsel_reg, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) fbloop = val & MP886X_V_BOOT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) if (fbloop) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) uv = rdev->desc->min_uV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) uv = mp8869_scale(uv, di->r[0], di->r[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) return regulator_map_voltage_linear(rdev, uv, uv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) val &= rdev->desc->vsel_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) val >>= ffs(rdev->desc->vsel_mask) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) return val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) static const struct regulator_ops mp8869_regulator_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) .set_voltage_sel = mp8869_set_voltage_sel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) .get_voltage_sel = mp8869_get_voltage_sel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) .set_voltage_time_sel = regulator_set_voltage_time_sel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) .map_voltage = regulator_map_voltage_linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) .list_voltage = regulator_list_voltage_linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) .enable = regulator_enable_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) .disable = regulator_disable_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) .is_enabled = regulator_is_enabled_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) .set_mode = mp886x_set_mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) .get_mode = mp886x_get_mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) .set_ramp_delay = mp886x_set_ramp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) static const struct mp886x_cfg_info mp8869_ci = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) .rops = &mp8869_regulator_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) .slew_rates = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 40000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 30000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 20000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 10000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 5000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 2500,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 1250,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 625,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) .switch_freq = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 500000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 750000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 1000000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 1250000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) .fs_reg = MP8869_SYSCNTLREG2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) .fs_shift = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) static int mp8867_set_voltage_sel(struct regulator_dev *rdev, unsigned int sel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) struct mp886x_device_info *di = rdev_get_drvdata(rdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) int ret, delta;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) ret = mp8869_set_voltage_sel(rdev, sel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) delta = di->sel - sel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (abs(delta) <= 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) ret = regmap_update_bits(rdev->regmap, MP886X_SYSCNTLREG1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) MP886X_GO, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) di->sel = sel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) static int mp8867_get_voltage_sel(struct regulator_dev *rdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) struct mp886x_device_info *di = rdev_get_drvdata(rdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) int ret, uv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) bool fbloop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) ret = regmap_read(rdev->regmap, rdev->desc->vsel_reg, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) fbloop = val & MP886X_V_BOOT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) val &= rdev->desc->vsel_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) val >>= ffs(rdev->desc->vsel_mask) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) if (fbloop) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) uv = regulator_list_voltage_linear(rdev, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) uv = mp8869_scale(uv, di->r[0], di->r[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) return regulator_map_voltage_linear(rdev, uv, uv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) return val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) static const struct regulator_ops mp8867_regulator_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) .set_voltage_sel = mp8867_set_voltage_sel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) .get_voltage_sel = mp8867_get_voltage_sel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) .set_voltage_time_sel = regulator_set_voltage_time_sel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) .map_voltage = regulator_map_voltage_linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) .list_voltage = regulator_list_voltage_linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) .enable = regulator_enable_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) .disable = regulator_disable_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) .is_enabled = regulator_is_enabled_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) .set_mode = mp886x_set_mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) .get_mode = mp886x_get_mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) .set_ramp_delay = mp886x_set_ramp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) static const struct mp886x_cfg_info mp8867_ci = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) .rops = &mp8867_regulator_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) .slew_rates = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 64000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 32000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 16000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 8000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 4000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 2000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 1000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 500,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) .switch_freq = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 500000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 750000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 1000000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 1500000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) .fs_reg = MP886X_SYSCNTLREG1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) .fs_shift = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) static int mp886x_regulator_register(struct mp886x_device_info *di,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) struct regulator_config *config)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) struct regulator_desc *rdesc = &di->desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) struct regulator_dev *rdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) rdesc->name = "mp886x-reg";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) rdesc->supply_name = "vin";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) rdesc->ops = di->ci->rops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) rdesc->type = REGULATOR_VOLTAGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) rdesc->n_voltages = 128;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) rdesc->enable_reg = MP886X_SYSCNTLREG1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) rdesc->enable_mask = MP886X_EN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) rdesc->min_uV = 600000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) rdesc->uV_step = 10000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) rdesc->vsel_reg = MP886X_VSEL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) rdesc->vsel_mask = 0x3f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) rdesc->owner = THIS_MODULE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) rdev = devm_regulator_register(di->dev, &di->desc, config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) if (IS_ERR(rdev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) return PTR_ERR(rdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) di->sel = rdesc->ops->get_voltage_sel(rdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) static const struct regmap_config mp886x_regmap_config = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) .reg_bits = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) .val_bits = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) static int mp886x_i2c_probe(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) struct device *dev = &client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) struct device_node *np = dev->of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) struct mp886x_device_info *di;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) struct regulator_config config = { };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) struct regmap *regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) u32 freq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) di = devm_kzalloc(dev, sizeof(struct mp886x_device_info), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) if (!di)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) di->regulator = of_get_regulator_init_data(dev, np, &di->desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) if (!di->regulator) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) dev_err(dev, "Platform data not found!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) ret = of_property_read_u32_array(np, "mps,fb-voltage-divider",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) di->r, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) di->en_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_HIGH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) if (IS_ERR(di->en_gpio))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) return PTR_ERR(di->en_gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) di->ci = of_device_get_match_data(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) di->dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) regmap = devm_regmap_init_i2c(client, &mp886x_regmap_config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) if (IS_ERR(regmap)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) dev_err(dev, "Failed to allocate regmap!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) return PTR_ERR(regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) i2c_set_clientdata(client, di);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) config.dev = di->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) config.init_data = di->regulator;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) config.regmap = regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) config.driver_data = di;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) config.of_node = np;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) if (!of_property_read_u32(np, "mps,switch-frequency-hz", &freq))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) mp886x_set_switch_freq(di, regmap, freq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) ret = mp886x_regulator_register(di, &config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) dev_err(dev, "Failed to register regulator!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) static const struct of_device_id mp886x_dt_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) .compatible = "mps,mp8867",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) .data = &mp8867_ci
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) .compatible = "mps,mp8869",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) .data = &mp8869_ci
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) MODULE_DEVICE_TABLE(of, mp886x_dt_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) static const struct i2c_device_id mp886x_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) { "mp886x", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) { },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) MODULE_DEVICE_TABLE(i2c, mp886x_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) static struct i2c_driver mp886x_regulator_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) .name = "mp886x-regulator",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) .of_match_table = of_match_ptr(mp886x_dt_ids),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) .probe_new = mp886x_i2c_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) .id_table = mp886x_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) module_i2c_driver(mp886x_regulator_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) MODULE_AUTHOR("Jisheng Zhang <jszhang@kernel.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) MODULE_DESCRIPTION("MP886x regulator driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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