^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) // max77826-regulator.c - regulator driver for Maxim MAX77826
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) // Author: Iskren Chernev <iskren.chernev@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/of.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/platform_device.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) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) enum max77826_registers {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) MAX77826_REG_INT_SRC = 0x00,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) MAX77826_REG_SYS_INT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) MAX77826_REG_INT1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) MAX77826_REG_INT2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) MAX77826_REG_BB_INT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) MAX77826_REG_INT_SRC_M,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) MAX77826_REG_TOPSYS_INT_M,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) MAX77826_REG_INT1_M,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) MAX77826_REG_INT2_M,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) MAX77826_REG_BB_INT_M,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) MAX77826_REG_TOPSYS_STAT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) MAX77826_REG_STAT1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) MAX77826_REG_STAT2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) MAX77826_REG_BB_STAT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) /* 0x0E - 0x0F: Reserved */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) MAX77826_REG_LDO_OPMD1 = 0x10,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) MAX77826_REG_LDO_OPMD2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) MAX77826_REG_LDO_OPMD3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) MAX77826_REG_LDO_OPMD4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) MAX77826_REG_B_BB_OPMD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) /* 0x15 - 0x1F: Reserved */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) MAX77826_REG_LDO1_CFG = 0x20,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) MAX77826_REG_LDO2_CFG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) MAX77826_REG_LDO3_CFG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) MAX77826_REG_LDO4_CFG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) MAX77826_REG_LDO5_CFG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) MAX77826_REG_LDO6_CFG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) MAX77826_REG_LDO7_CFG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) MAX77826_REG_LDO8_CFG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) MAX77826_REG_LDO9_CFG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) MAX77826_REG_LDO10_CFG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) MAX77826_REG_LDO11_CFG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) MAX77826_REG_LDO12_CFG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) MAX77826_REG_LDO13_CFG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) MAX77826_REG_LDO14_CFG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) MAX77826_REG_LDO15_CFG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) /* 0x2F: Reserved */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) MAX77826_REG_BUCK_CFG = 0x30,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) MAX77826_REG_BUCK_VOUT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) MAX77826_REG_BB_CFG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) MAX77826_REG_BB_VOUT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) /* 0x34 - 0x3F: Reserved */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) MAX77826_REG_BUCK_SS_FREQ = 0x40,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) MAX77826_REG_UVLO_FALL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) /* 0x42 - 0xCE: Reserved */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) MAX77826_REG_DEVICE_ID = 0xCF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) enum max77826_regulators {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) MAX77826_LDO1 = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) MAX77826_LDO2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) MAX77826_LDO3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) MAX77826_LDO4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) MAX77826_LDO5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) MAX77826_LDO6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) MAX77826_LDO7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) MAX77826_LDO8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) MAX77826_LDO9,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) MAX77826_LDO10,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) MAX77826_LDO11,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) MAX77826_LDO12,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) MAX77826_LDO13,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) MAX77826_LDO14,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) MAX77826_LDO15,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) MAX77826_BUCK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) MAX77826_BUCKBOOST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) MAX77826_MAX_REGULATORS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) #define MAX77826_MASK_LDO 0x7f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) #define MAX77826_MASK_BUCK 0xff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) #define MAX77826_MASK_BUCKBOOST 0x7f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) #define MAX77826_BUCK_RAMP_DELAY 12500
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) /* values in mV */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) /* for LDO1-3 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) #define MAX77826_NMOS_LDO_VOLT_MIN 600000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) #define MAX77826_NMOS_LDO_VOLT_MAX 2187500
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) #define MAX77826_NMOS_LDO_VOLT_STEP 12500
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) /* for LDO4-15 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) #define MAX77826_PMOS_LDO_VOLT_MIN 800000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) #define MAX77826_PMOS_LDO_VOLT_MAX 3975000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #define MAX77826_PMOS_LDO_VOLT_STEP 25000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) /* for BUCK */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) #define MAX77826_BUCK_VOLT_MIN 500000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) #define MAX77826_BUCK_VOLT_MAX 1800000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) #define MAX77826_BUCK_VOLT_STEP 6250
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) /* for BUCKBOOST */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) #define MAX77826_BUCKBOOST_VOLT_MIN 2600000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) #define MAX77826_BUCKBOOST_VOLT_MAX 4187500
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) #define MAX77826_BUCKBOOST_VOLT_STEP 12500
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) #define MAX77826_VOLT_RANGE(_type) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) ((MAX77826_ ## _type ## _VOLT_MAX - \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) MAX77826_ ## _type ## _VOLT_MIN) / \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) MAX77826_ ## _type ## _VOLT_STEP + 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) #define MAX77826_LDO(_id, _type) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) [MAX77826_LDO ## _id] = { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) .id = MAX77826_LDO ## _id, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) .name = "LDO"#_id, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) .of_match = of_match_ptr("LDO"#_id), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) .regulators_node = "regulators", \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) .ops = &max77826_most_ops, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) .min_uV = MAX77826_ ## _type ## _LDO_VOLT_MIN, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) .uV_step = MAX77826_ ## _type ## _LDO_VOLT_STEP, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) .n_voltages = MAX77826_VOLT_RANGE(_type ## _LDO), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) .enable_reg = MAX77826_REG_LDO_OPMD1 + (_id - 1) / 4, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) .enable_mask = BIT(((_id - 1) % 4) * 2 + 1), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) .vsel_reg = MAX77826_REG_LDO1_CFG + (_id - 1), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) .vsel_mask = MAX77826_MASK_LDO, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) .owner = THIS_MODULE, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) #define MAX77826_BUCK(_idx, _id, _ops) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) [MAX77826_ ## _id] = { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) .id = MAX77826_ ## _id, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) .name = #_id, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) .of_match = of_match_ptr(#_id), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) .regulators_node = "regulators", \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) .ops = &_ops, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) .min_uV = MAX77826_ ## _id ## _VOLT_MIN, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) .uV_step = MAX77826_ ## _id ## _VOLT_STEP, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) .n_voltages = MAX77826_VOLT_RANGE(_id), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) .enable_reg = MAX77826_REG_B_BB_OPMD, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) .enable_mask = BIT(_idx * 2 + 1), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) .vsel_reg = MAX77826_REG_BUCK_VOUT + _idx * 2, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) .vsel_mask = MAX77826_MASK_ ## _id, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) .owner = THIS_MODULE, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^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) struct max77826_regulator_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) struct regmap *regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) struct regulator_desc *rdesc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) static const struct regmap_config max77826_regmap_config = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) .reg_bits = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) .val_bits = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) .max_register = MAX77826_REG_DEVICE_ID,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) static int max77826_set_voltage_time_sel(struct regulator_dev *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) unsigned int old_selector,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) unsigned int new_selector);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) static const struct regulator_ops max77826_most_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) .enable = regulator_enable_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) .disable = regulator_disable_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) .is_enabled = regulator_is_enabled_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) .list_voltage = regulator_list_voltage_linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) .map_voltage = regulator_map_voltage_linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) .get_voltage_sel = regulator_get_voltage_sel_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) .set_voltage_sel = regulator_set_voltage_sel_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) static const struct regulator_ops max77826_buck_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) .enable = regulator_enable_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) .disable = regulator_disable_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) .is_enabled = regulator_is_enabled_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) .list_voltage = regulator_list_voltage_linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) .map_voltage = regulator_map_voltage_linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) .get_voltage_sel = regulator_get_voltage_sel_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) .set_voltage_sel = regulator_set_voltage_sel_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) .set_voltage_time_sel = max77826_set_voltage_time_sel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) static struct regulator_desc max77826_regulators_desc[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) MAX77826_LDO(1, NMOS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) MAX77826_LDO(2, NMOS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) MAX77826_LDO(3, NMOS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) MAX77826_LDO(4, PMOS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) MAX77826_LDO(5, PMOS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) MAX77826_LDO(6, PMOS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) MAX77826_LDO(7, PMOS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) MAX77826_LDO(8, PMOS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) MAX77826_LDO(9, PMOS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) MAX77826_LDO(10, PMOS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) MAX77826_LDO(11, PMOS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) MAX77826_LDO(12, PMOS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) MAX77826_LDO(13, PMOS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) MAX77826_LDO(14, PMOS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) MAX77826_LDO(15, PMOS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) MAX77826_BUCK(0, BUCK, max77826_buck_ops),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) MAX77826_BUCK(1, BUCKBOOST, max77826_most_ops),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) static int max77826_set_voltage_time_sel(struct regulator_dev *rdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) unsigned int old_selector,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) unsigned int new_selector)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) if (new_selector > old_selector) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) return DIV_ROUND_UP(MAX77826_BUCK_VOLT_STEP *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) (new_selector - old_selector),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) MAX77826_BUCK_RAMP_DELAY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) static int max77826_read_device_id(struct regmap *regmap, struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) unsigned int device_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) int res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) res = regmap_read(regmap, MAX77826_REG_DEVICE_ID, &device_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) if (!res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) dev_dbg(dev, "DEVICE_ID: 0x%x\n", device_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) return res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) static int max77826_i2c_probe(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) struct device *dev = &client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) struct max77826_regulator_info *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) struct regulator_config config = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) struct regulator_dev *rdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) struct regmap *regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) info = devm_kzalloc(dev, sizeof(struct max77826_regulator_info),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) if (!info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) info->rdesc = max77826_regulators_desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) regmap = devm_regmap_init_i2c(client, &max77826_regmap_config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) if (IS_ERR(regmap)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) dev_err(dev, "Failed to allocate regmap!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) return PTR_ERR(regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) info->regmap = regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) i2c_set_clientdata(client, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) config.dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) config.regmap = regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) config.driver_data = info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) for (i = 0; i < MAX77826_MAX_REGULATORS; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) rdev = devm_regulator_register(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) &max77826_regulators_desc[i],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) &config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) if (IS_ERR(rdev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) dev_err(dev, "Failed to register regulator!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) return PTR_ERR(rdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) return max77826_read_device_id(regmap, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) static const struct of_device_id __maybe_unused max77826_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) { .compatible = "maxim,max77826" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) { /* sentinel */ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) MODULE_DEVICE_TABLE(of, max77826_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) static const struct i2c_device_id max77826_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) { "max77826-regulator" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) { /* sentinel */ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) MODULE_DEVICE_TABLE(i2c, max77826_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) static struct i2c_driver max77826_regulator_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) .name = "max77826",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) .of_match_table = of_match_ptr(max77826_of_match),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) .probe_new = max77826_i2c_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) .id_table = max77826_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) module_i2c_driver(max77826_regulator_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) MODULE_AUTHOR("Iskren Chernev <iskren.chernev@gmail.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) MODULE_DESCRIPTION("MAX77826 PMIC regulator driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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