^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) // Copyright (C) 2020 ROHM Semiconductors
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) // ROHM BD9576MUF/BD9573MUF regulator driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/gpio/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/mfd/rohm-bd957x.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/mfd/rohm-generic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/regulator/driver.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/regulator/machine.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/regulator/of_regulator.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define BD957X_VOUTS1_VOLT 3300000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define BD957X_VOUTS4_BASE_VOLT 1030000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define BD957X_VOUTS34_NUM_VOLT 32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) static int vout1_volt_table[] = {5000000, 4900000, 4800000, 4700000, 4600000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 4500000, 4500000, 4500000, 5000000, 5100000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 5200000, 5300000, 5400000, 5500000, 5500000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 5500000};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static int vout2_volt_table[] = {1800000, 1780000, 1760000, 1740000, 1720000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 1700000, 1680000, 1660000, 1800000, 1820000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 1840000, 1860000, 1880000, 1900000, 1920000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 1940000};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) static int voutl1_volt_table[] = {2500000, 2540000, 2580000, 2620000, 2660000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 2700000, 2740000, 2780000, 2500000, 2460000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 2420000, 2380000, 2340000, 2300000, 2260000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 2220000};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) struct bd957x_regulator_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct regulator_desc desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) int base_voltage;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) static int bd957x_vout34_list_voltage(struct regulator_dev *rdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) unsigned int selector)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) const struct regulator_desc *desc = rdev->desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) int multiplier = selector & desc->vsel_mask & 0x7f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) int tune;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) /* VOUT3 and 4 has 10mV step */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) tune = multiplier * 10000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) if (!(selector & 0x80))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) return desc->fixed_uV - tune;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) return desc->fixed_uV + tune;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) static int bd957x_list_voltage(struct regulator_dev *rdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) unsigned int selector)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) const struct regulator_desc *desc = rdev->desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) int index = selector & desc->vsel_mask & 0x7f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) if (!(selector & 0x80))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) index += desc->n_voltages/2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) if (index >= desc->n_voltages)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) return desc->volt_table[index];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) static const struct regulator_ops bd957x_vout34_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) .is_enabled = regulator_is_enabled_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) .list_voltage = bd957x_vout34_list_voltage,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) .get_voltage_sel = regulator_get_voltage_sel_regmap,
^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) static const struct regulator_ops bd957X_vouts1_regulator_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) .is_enabled = regulator_is_enabled_regmap,
^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 const struct regulator_ops bd957x_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) .is_enabled = regulator_is_enabled_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) .list_voltage = bd957x_list_voltage,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) .get_voltage_sel = regulator_get_voltage_sel_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) static struct bd957x_regulator_data bd9576_regulators[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) .desc = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) .name = "VD50",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) .of_match = of_match_ptr("regulator-vd50"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) .regulators_node = of_match_ptr("regulators"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) .id = BD957X_VD50,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) .type = REGULATOR_VOLTAGE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) .ops = &bd957x_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) .volt_table = &vout1_volt_table[0],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) .n_voltages = ARRAY_SIZE(vout1_volt_table),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) .vsel_reg = BD957X_REG_VOUT1_TUNE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) .vsel_mask = BD957X_MASK_VOUT1_TUNE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) .enable_reg = BD957X_REG_POW_TRIGGER1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) .enable_mask = BD957X_REGULATOR_EN_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) .enable_val = BD957X_REGULATOR_DIS_VAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) .enable_is_inverted = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) .desc = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) .name = "VD18",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) .of_match = of_match_ptr("regulator-vd18"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) .regulators_node = of_match_ptr("regulators"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) .id = BD957X_VD18,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) .type = REGULATOR_VOLTAGE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) .ops = &bd957x_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) .volt_table = &vout2_volt_table[0],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) .n_voltages = ARRAY_SIZE(vout2_volt_table),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) .vsel_reg = BD957X_REG_VOUT2_TUNE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) .vsel_mask = BD957X_MASK_VOUT2_TUNE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) .enable_reg = BD957X_REG_POW_TRIGGER2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) .enable_mask = BD957X_REGULATOR_EN_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) .enable_val = BD957X_REGULATOR_DIS_VAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) .enable_is_inverted = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) .owner = THIS_MODULE,
^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) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) .desc = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) .name = "VDDDR",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) .of_match = of_match_ptr("regulator-vdddr"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) .regulators_node = of_match_ptr("regulators"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) .id = BD957X_VDDDR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) .ops = &bd957x_vout34_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) .type = REGULATOR_VOLTAGE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) .n_voltages = BD957X_VOUTS34_NUM_VOLT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) .vsel_reg = BD957X_REG_VOUT3_TUNE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) .vsel_mask = BD957X_MASK_VOUT3_TUNE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) .enable_reg = BD957X_REG_POW_TRIGGER3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) .enable_mask = BD957X_REGULATOR_EN_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) .enable_val = BD957X_REGULATOR_DIS_VAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) .enable_is_inverted = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) .desc = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) .name = "VD10",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) .of_match = of_match_ptr("regulator-vd10"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) .regulators_node = of_match_ptr("regulators"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) .id = BD957X_VD10,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) .ops = &bd957x_vout34_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) .type = REGULATOR_VOLTAGE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) .fixed_uV = BD957X_VOUTS4_BASE_VOLT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) .n_voltages = BD957X_VOUTS34_NUM_VOLT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) .vsel_reg = BD957X_REG_VOUT4_TUNE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) .vsel_mask = BD957X_MASK_VOUT4_TUNE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) .enable_reg = BD957X_REG_POW_TRIGGER4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) .enable_mask = BD957X_REGULATOR_EN_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) .enable_val = BD957X_REGULATOR_DIS_VAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) .enable_is_inverted = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) .desc = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) .name = "VOUTL1",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) .of_match = of_match_ptr("regulator-voutl1"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) .regulators_node = of_match_ptr("regulators"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) .id = BD957X_VOUTL1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) .ops = &bd957x_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) .type = REGULATOR_VOLTAGE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) .volt_table = &voutl1_volt_table[0],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) .n_voltages = ARRAY_SIZE(voutl1_volt_table),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) .vsel_reg = BD957X_REG_VOUTL1_TUNE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) .vsel_mask = BD957X_MASK_VOUTL1_TUNE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) .enable_reg = BD957X_REG_POW_TRIGGERL1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) .enable_mask = BD957X_REGULATOR_EN_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) .enable_val = BD957X_REGULATOR_DIS_VAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) .enable_is_inverted = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) .desc = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) .name = "VOUTS1",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) .of_match = of_match_ptr("regulator-vouts1"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) .regulators_node = of_match_ptr("regulators"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) .id = BD957X_VOUTS1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) .ops = &bd957X_vouts1_regulator_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) .type = REGULATOR_VOLTAGE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) .n_voltages = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) .fixed_uV = BD957X_VOUTS1_VOLT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) .enable_reg = BD957X_REG_POW_TRIGGERS1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) .enable_mask = BD957X_REGULATOR_EN_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) .enable_val = BD957X_REGULATOR_DIS_VAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) .enable_is_inverted = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) },
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) static int bd957x_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) struct regmap *regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) struct regulator_config config = { 0 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) bool vout_mode, ddr_sel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) const struct bd957x_regulator_data *reg_data = &bd9576_regulators[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) unsigned int num_reg_data = ARRAY_SIZE(bd9576_regulators);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) enum rohm_chip_type chip = platform_get_device_id(pdev)->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) regmap = dev_get_regmap(pdev->dev.parent, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) if (!regmap) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) dev_err(&pdev->dev, "No regmap\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) vout_mode = of_property_read_bool(pdev->dev.parent->of_node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) "rohm,vout1-en-low");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) if (vout_mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) struct gpio_desc *en;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) dev_dbg(&pdev->dev, "GPIO controlled mode\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) /* VOUT1 enable state judged by VOUT1_EN pin */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) /* See if we have GPIO defined */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) en = devm_gpiod_get_from_of_node(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) pdev->dev.parent->of_node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) "rohm,vout1-en-gpios", 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) GPIOD_OUT_LOW, "vout1-en");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) if (!IS_ERR(en)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) /* VOUT1_OPS gpio ctrl */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) * Regulator core prioritizes the ena_gpio over
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) * enable/disable/is_enabled callbacks so no need to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) * clear them. We can still use same ops
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) config.ena_gpiod = en;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) * In theory it is possible someone wants to set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) * vout1-en LOW during OTP loading and set VOUT1 to be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) * controlled by GPIO - but control the GPIO from some
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) * where else than this driver. For that to work we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) * should unset the is_enabled callback here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) * I believe such case where rohm,vout1-en-low is set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) * and vout1-en-gpios is not is likely to be a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) * misconfiguration. So let's just err out for now.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) "Failed to get VOUT1 control GPIO\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) return PTR_ERR(en);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) * If more than one PMIC needs to be controlled by same processor then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) * allocate the regulator data array here and use bd9576_regulators as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) * template. At the moment I see no such use-case so I spare some
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) * bytes and use bd9576_regulators directly for non-constant configs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) * like DDR voltage selection.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) ddr_sel = of_property_read_bool(pdev->dev.parent->of_node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) "rohm,ddr-sel-low");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) if (ddr_sel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) bd9576_regulators[2].desc.fixed_uV = 1350000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) bd9576_regulators[2].desc.fixed_uV = 1500000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) switch (chip) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) case ROHM_CHIP_TYPE_BD9576:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) dev_dbg(&pdev->dev, "Found BD9576MUF\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) case ROHM_CHIP_TYPE_BD9573:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) dev_dbg(&pdev->dev, "Found BD9573MUF\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) dev_err(&pdev->dev, "Unsupported chip type\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) config.dev = pdev->dev.parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) config.regmap = regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) for (i = 0; i < num_reg_data; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) const struct regulator_desc *desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) struct regulator_dev *rdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) const struct bd957x_regulator_data *r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) r = ®_data[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) desc = &r->desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) rdev = devm_regulator_register(&pdev->dev, desc, &config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) if (IS_ERR(rdev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) "failed to register %s regulator\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) desc->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) return PTR_ERR(rdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) * Clear the VOUT1 GPIO setting - rest of the regulators do not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) * support GPIO control
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) config.ena_gpiod = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) static const struct platform_device_id bd957x_pmic_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) { "bd9573-pmic", ROHM_CHIP_TYPE_BD9573 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) { "bd9576-pmic", ROHM_CHIP_TYPE_BD9576 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) { },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) MODULE_DEVICE_TABLE(platform, bd957x_pmic_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) static struct platform_driver bd957x_regulator = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) .name = "bd957x-pmic",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) .probe = bd957x_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) .id_table = bd957x_pmic_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) module_platform_driver(bd957x_regulator);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) MODULE_DESCRIPTION("ROHM BD9576/BD9573 voltage regulator driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) MODULE_ALIAS("platform:bd957x-pmic");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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