^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) // max77693.c - Regulator driver for the Maxim 77693 and 77843
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) // Copyright (C) 2013-2015 Samsung Electronics
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) // Jonghwa Lee <jonghwa3.lee@samsung.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) // Krzysztof Kozlowski <krzk@kernel.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) // This driver is based on max77686.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/slab.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/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/regulator/driver.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/regulator/machine.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/mfd/max77693.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/mfd/max77693-common.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/mfd/max77693-private.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/mfd/max77843-private.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/regulator/of_regulator.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * ID for MAX77843 regulators.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * There is no need for such for MAX77693.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) enum max77843_regulator_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) MAX77843_SAFEOUT1 = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) MAX77843_SAFEOUT2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) MAX77843_CHARGER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) MAX77843_NUM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) /* Register differences between chargers: MAX77693 and MAX77843 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct chg_reg_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) unsigned int linear_reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) unsigned int linear_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) unsigned int uA_step;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) unsigned int min_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) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * MAX77693 CHARGER regulator - Min : 20mA, Max : 2580mA, step : 20mA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * 0x00, 0x01, 0x2, 0x03 = 60 mA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * 0x04 ~ 0x7E = (60 + (X - 3) * 20) mA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * Actually for MAX77693 the driver manipulates the maximum input current,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * not the fast charge current (output). This should be fixed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * On MAX77843 the calculation formula is the same (except values).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * Fortunately it properly manipulates the fast charge current.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) static int max77693_chg_get_current_limit(struct regulator_dev *rdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) const struct chg_reg_data *reg_data = rdev_get_drvdata(rdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) unsigned int chg_min_uA = rdev->constraints->min_uA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) unsigned int chg_max_uA = rdev->constraints->max_uA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) unsigned int reg, sel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) ret = regmap_read(rdev->regmap, reg_data->linear_reg, ®);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) sel = reg & reg_data->linear_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) /* the first four codes for charger current are all 60mA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) if (sel <= reg_data->min_sel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) sel = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) sel -= reg_data->min_sel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) val = chg_min_uA + reg_data->uA_step * sel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) if (val > chg_max_uA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) return val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) static int max77693_chg_set_current_limit(struct regulator_dev *rdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) int min_uA, int max_uA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) const struct chg_reg_data *reg_data = rdev_get_drvdata(rdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) unsigned int chg_min_uA = rdev->constraints->min_uA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) int sel = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) while (chg_min_uA + reg_data->uA_step * sel < min_uA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) sel++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) if (chg_min_uA + reg_data->uA_step * sel > max_uA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) /* the first four codes for charger current are all 60mA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) sel += reg_data->min_sel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) return regmap_write(rdev->regmap, reg_data->linear_reg, sel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) /* end of CHARGER regulator ops */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) /* Returns regmap suitable for given regulator on chosen device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static struct regmap *max77693_get_regmap(enum max77693_types type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) struct max77693_dev *max77693,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) int reg_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) if (type == TYPE_MAX77693)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) return max77693->regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) /* Else: TYPE_MAX77843 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) switch (reg_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) case MAX77843_SAFEOUT1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) case MAX77843_SAFEOUT2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) return max77693->regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) case MAX77843_CHARGER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) return max77693->regmap_chg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) return max77693->regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static const unsigned int max77693_safeout_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 4850000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 4900000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 4950000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 3300000,
^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 const struct regulator_ops max77693_safeout_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) .list_voltage = regulator_list_voltage_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) .is_enabled = regulator_is_enabled_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) .enable = regulator_enable_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) .disable = regulator_disable_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) .get_voltage_sel = regulator_get_voltage_sel_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) .set_voltage_sel = regulator_set_voltage_sel_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) static const struct regulator_ops max77693_charger_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) .is_enabled = regulator_is_enabled_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) .enable = regulator_enable_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) .disable = regulator_disable_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) .get_current_limit = max77693_chg_get_current_limit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) .set_current_limit = max77693_chg_set_current_limit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) #define max77693_regulator_desc_esafeout(_num) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) .name = "ESAFEOUT"#_num, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) .id = MAX77693_ESAFEOUT##_num, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) .of_match = of_match_ptr("ESAFEOUT"#_num), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) .regulators_node = of_match_ptr("regulators"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) .n_voltages = 4, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) .ops = &max77693_safeout_ops, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) .type = REGULATOR_VOLTAGE, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) .owner = THIS_MODULE, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) .volt_table = max77693_safeout_table, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) .vsel_reg = MAX77693_CHG_REG_SAFEOUT_CTRL, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) .vsel_mask = SAFEOUT_CTRL_SAFEOUT##_num##_MASK, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) .enable_reg = MAX77693_CHG_REG_SAFEOUT_CTRL, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) .enable_mask = SAFEOUT_CTRL_ENSAFEOUT##_num##_MASK , \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) static const struct regulator_desc max77693_supported_regulators[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) max77693_regulator_desc_esafeout(1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) max77693_regulator_desc_esafeout(2),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) .name = "CHARGER",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) .id = MAX77693_CHARGER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) .of_match = of_match_ptr("CHARGER"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) .regulators_node = of_match_ptr("regulators"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) .ops = &max77693_charger_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) .type = REGULATOR_CURRENT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) .enable_reg = MAX77693_CHG_REG_CHG_CNFG_00,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) .enable_mask = CHG_CNFG_00_CHG_MASK |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) CHG_CNFG_00_BUCK_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) .enable_val = CHG_CNFG_00_CHG_MASK | CHG_CNFG_00_BUCK_MASK,
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) static const struct chg_reg_data max77693_chg_reg_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) .linear_reg = MAX77693_CHG_REG_CHG_CNFG_09,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) .linear_mask = CHG_CNFG_09_CHGIN_ILIM_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) .uA_step = 20000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) .min_sel = 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) #define max77843_regulator_desc_esafeout(num) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) .name = "SAFEOUT" # num, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) .id = MAX77843_SAFEOUT ## num, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) .ops = &max77693_safeout_ops, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) .of_match = of_match_ptr("SAFEOUT" # num), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) .regulators_node = of_match_ptr("regulators"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) .type = REGULATOR_VOLTAGE, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) .owner = THIS_MODULE, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) .n_voltages = ARRAY_SIZE(max77693_safeout_table), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) .volt_table = max77693_safeout_table, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) .enable_reg = MAX77843_SYS_REG_SAFEOUTCTRL, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) .enable_mask = MAX77843_REG_SAFEOUTCTRL_ENSAFEOUT ## num, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) .vsel_reg = MAX77843_SYS_REG_SAFEOUTCTRL, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) .vsel_mask = MAX77843_REG_SAFEOUTCTRL_SAFEOUT ## num ## _MASK, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) static const struct regulator_desc max77843_supported_regulators[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) [MAX77843_SAFEOUT1] = max77843_regulator_desc_esafeout(1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) [MAX77843_SAFEOUT2] = max77843_regulator_desc_esafeout(2),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) [MAX77843_CHARGER] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) .name = "CHARGER",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) .id = MAX77843_CHARGER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) .ops = &max77693_charger_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) .of_match = of_match_ptr("CHARGER"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) .regulators_node = of_match_ptr("regulators"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) .type = REGULATOR_CURRENT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) .enable_reg = MAX77843_CHG_REG_CHG_CNFG_00,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) .enable_mask = MAX77843_CHG_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) .enable_val = MAX77843_CHG_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) },
^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) static const struct chg_reg_data max77843_chg_reg_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) .linear_reg = MAX77843_CHG_REG_CHG_CNFG_02,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) .linear_mask = MAX77843_CHG_FAST_CHG_CURRENT_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) .uA_step = MAX77843_CHG_FAST_CHG_CURRENT_STEP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) .min_sel = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) static int max77693_pmic_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) enum max77693_types type = platform_get_device_id(pdev)->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) struct max77693_dev *iodev = dev_get_drvdata(pdev->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) const struct regulator_desc *regulators;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) unsigned int regulators_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) struct regulator_config config = { };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) config.dev = iodev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) switch (type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) case TYPE_MAX77693:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) regulators = max77693_supported_regulators;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) regulators_size = ARRAY_SIZE(max77693_supported_regulators);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) config.driver_data = (void *)&max77693_chg_reg_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) case TYPE_MAX77843:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) regulators = max77843_supported_regulators;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) regulators_size = ARRAY_SIZE(max77843_supported_regulators);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) config.driver_data = (void *)&max77843_chg_reg_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) dev_err(&pdev->dev, "Unsupported device type: %u\n", type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) for (i = 0; i < regulators_size; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) struct regulator_dev *rdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) config.regmap = max77693_get_regmap(type, iodev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) regulators[i].id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) rdev = devm_regulator_register(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) ®ulators[i], &config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) if (IS_ERR(rdev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) "Failed to initialize regulator-%d\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) return PTR_ERR(rdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) return 0;
^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) static const struct platform_device_id max77693_pmic_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) { "max77693-pmic", TYPE_MAX77693 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) { "max77843-regulator", TYPE_MAX77843 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) {},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) MODULE_DEVICE_TABLE(platform, max77693_pmic_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) static struct platform_driver max77693_pmic_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) .name = "max77693-pmic",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) .probe = max77693_pmic_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) .id_table = max77693_pmic_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) static int __init max77693_pmic_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) return platform_driver_register(&max77693_pmic_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) subsys_initcall(max77693_pmic_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) static void __exit max77693_pmic_cleanup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) platform_driver_unregister(&max77693_pmic_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) module_exit(max77693_pmic_cleanup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) MODULE_DESCRIPTION("MAXIM 77693/77843 regulator driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) MODULE_AUTHOR("Jonghwa Lee <jonghwa3.lee@samsung.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) MODULE_AUTHOR("Krzysztof Kozlowski <krzk@kernel.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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