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c23fca8958
The driver provides regulator set/get voltage enable/disable functions for TI TPS5911 PMIC. Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
395 lines
7.7 KiB
C
395 lines
7.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright(C) 2023 Svyatoslav Ryhel <clamor95@gmail.com>
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*/
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#include <dm.h>
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#include <power/pmic.h>
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#include <power/regulator.h>
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#include <power/tps65910_pmic.h>
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/* fist row is control registers, second is voltage registers */
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static const char tps65911_vdd_reg[][TPS65911_VDD_NUM] = {
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{ TPS65911_REG_VDD1, TPS65911_REG_VDD2,
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TPS65911_REG_VDDCTRL, TPS65911_REG_VIO },
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{ TPS65911_REG_VDD1_OP, TPS65911_REG_VDD2_OP,
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TPS65911_REG_VDDCTRL_OP, 0x00 },
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};
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static const char tps65911_ldo_reg[TPS65911_LDO_NUM] = {
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TPS65911_REG_LDO1, TPS65911_REG_LDO2, TPS65911_REG_LDO3,
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TPS65911_REG_LDO4, TPS65911_REG_LDO5, TPS65911_REG_LDO6,
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TPS65911_REG_LDO7, TPS65911_REG_LDO8
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};
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static int tps65911_regulator_enable(struct udevice *dev, int op, bool *enable)
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{
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struct dm_regulator_uclass_plat *uc_pdata =
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dev_get_uclass_plat(dev);
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u32 adr = uc_pdata->ctrl_reg;
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int val, ret;
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val = pmic_reg_read(dev->parent, adr);
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if (val < 0)
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return val;
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if (op == PMIC_OP_GET) {
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if (val & TPS65910_SUPPLY_STATE_ON)
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*enable = true;
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else
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*enable = false;
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return 0;
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} else if (op == PMIC_OP_SET) {
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val &= ~TPS65910_SUPPLY_STATE_MASK;
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if (*enable)
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val |= TPS65910_SUPPLY_STATE_ON;
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ret = pmic_reg_write(dev->parent, adr, val);
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if (ret)
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return ret;
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}
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return 0;
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}
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static int tps65911_get_enable(struct udevice *dev)
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{
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bool enable = false;
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int ret;
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ret = tps65911_regulator_enable(dev, PMIC_OP_GET, &enable);
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if (ret)
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return ret;
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return enable;
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}
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static int tps65911_set_enable(struct udevice *dev, bool enable)
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{
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return tps65911_regulator_enable(dev, PMIC_OP_SET, &enable);
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}
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/**
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* tps65911_vdd_volt2hex() - convert voltage in uV into
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* applicable to register hex value
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*
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* @uV: voltage in uV
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*
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* Return: voltage in hex on success, -ve on failure
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*/
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static int tps65911_vdd_volt2hex(int uV)
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{
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if (uV > TPS65911_VDD_VOLT_MAX)
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return -EINVAL;
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if (uV < TPS65911_VDD_VOLT_MIN)
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uV = TPS65911_VDD_VOLT_MIN;
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return (uV - TPS65911_VDD_VOLT_BASE) / 12500;
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}
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/**
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* tps65911_vdd_hex2volt() - convert register hex value into
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* actual voltage in uV
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*
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* @hex: hex value of register
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*
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* Return: voltage in uV on success, -ve on failure
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*/
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static int tps65911_vdd_hex2volt(int hex)
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{
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if (hex > TPS65910_VDD_SEL_MAX)
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return -EINVAL;
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if (hex < TPS65910_VDD_SEL_MIN)
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hex = TPS65910_VDD_SEL_MIN;
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return TPS65911_VDD_VOLT_BASE + hex * 12500;
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}
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static int tps65911_vio_range[4] = {
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1500000, 1800000, 2500000, 3300000
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};
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static int tps65911_vio_val(struct udevice *dev, int op, int *uV)
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{
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struct dm_regulator_uclass_plat *uc_pdata =
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dev_get_uclass_plat(dev);
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u32 adr = uc_pdata->volt_reg;
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int i, val;
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val = pmic_reg_read(dev->parent, adr);
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if (val < 0)
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return val;
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if (op == PMIC_OP_GET) {
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*uV = 0;
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val &= TPS65910_SEL_MASK;
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*uV = tps65911_vio_range[val >> 2];
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return 0;
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}
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val &= ~TPS65910_SEL_MASK;
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for (i = 0; i < ARRAY_SIZE(tps65911_vio_range); i++)
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if (*uV <= tps65911_vio_range[i])
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break;
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return pmic_reg_write(dev->parent, adr, val | i << 2);
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}
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static int tps65911_vdd_val(struct udevice *dev, int op, int *uV)
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{
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struct dm_regulator_uclass_plat *uc_pdata =
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dev_get_uclass_plat(dev);
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u32 adr = uc_pdata->volt_reg;
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int val, ret;
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/* in case vdd is vio */
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if (!adr)
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return tps65911_vio_val(dev, op, uV);
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val = pmic_reg_read(dev->parent, adr);
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if (val < 0)
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return val;
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if (op == PMIC_OP_GET) {
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*uV = 0;
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ret = tps65911_vdd_hex2volt(val);
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if (ret < 0)
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return ret;
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*uV = ret;
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return 0;
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}
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val = tps65911_vdd_volt2hex(*uV);
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if (val < 0)
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return val;
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return pmic_reg_write(dev->parent, adr, val);
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}
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static int tps65911_vdd_probe(struct udevice *dev)
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{
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struct dm_regulator_uclass_plat *uc_pdata =
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dev_get_uclass_plat(dev);
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uc_pdata->type = REGULATOR_TYPE_BUCK;
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/* check for vddctrl and vddio cases */
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if (!strcmp("vddctrl", dev->name)) {
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uc_pdata->ctrl_reg = tps65911_vdd_reg[0][2];
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uc_pdata->volt_reg = tps65911_vdd_reg[1][2];
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return 0;
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}
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if (!strcmp("vddio", dev->name)) {
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uc_pdata->ctrl_reg = tps65911_vdd_reg[0][3];
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uc_pdata->volt_reg = tps65911_vdd_reg[1][3];
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return 0;
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}
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if (dev->driver_data > 0) {
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u8 idx = dev->driver_data - 1;
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uc_pdata->ctrl_reg = tps65911_vdd_reg[0][idx];
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uc_pdata->volt_reg = tps65911_vdd_reg[1][idx];
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}
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return 0;
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}
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static int vdd_get_value(struct udevice *dev)
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{
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int uV;
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int ret;
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ret = tps65911_vdd_val(dev, PMIC_OP_GET, &uV);
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if (ret)
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return ret;
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return uV;
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}
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static int vdd_set_value(struct udevice *dev, int uV)
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{
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return tps65911_vdd_val(dev, PMIC_OP_SET, &uV);
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}
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static const struct dm_regulator_ops tps65911_vdd_ops = {
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.get_value = vdd_get_value,
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.set_value = vdd_set_value,
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.get_enable = tps65911_get_enable,
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.set_enable = tps65911_set_enable,
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};
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U_BOOT_DRIVER(tps65911_vdd) = {
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.name = TPS65911_VDD_DRIVER,
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.id = UCLASS_REGULATOR,
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.ops = &tps65911_vdd_ops,
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.probe = tps65911_vdd_probe,
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};
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/**
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* tps65911_ldo_volt2hex() - convert voltage in uV into
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* applicable to register hex value
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*
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* @idx: regulator index
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* @uV: voltage in uV
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*
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* Return: voltage in hex on success, -ve on failure
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*/
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static int tps65911_ldo_volt2hex(int idx, int uV)
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{
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int step;
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if (uV > TPS65911_LDO_VOLT_MAX)
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return -EINVAL;
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if (uV < TPS65911_LDO_VOLT_BASE)
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uV = TPS65911_LDO_VOLT_BASE;
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switch (idx) {
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case 1:
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case 2:
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case 4:
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step = TPS65911_LDO124_VOLT_STEP;
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break;
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case 3:
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case 5:
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case 6:
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case 7:
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case 8:
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step = TPS65911_LDO358_VOLT_STEP;
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break;
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default:
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return -EINVAL;
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};
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return ((uV - TPS65911_LDO_VOLT_BASE) / step) << 2;
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}
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/**
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* tps65911_ldo_hex2volt() - convert register hex value into
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* actual voltage in uV
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*
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* @idx: regulator index
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* @hex: hex value of register
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*
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* Return: voltage in uV on success, -ve on failure
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*/
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static int tps65911_ldo_hex2volt(int idx, int hex)
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{
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int step;
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switch (idx) {
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case 1:
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case 2:
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case 4:
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if (hex > TPS65911_LDO124_VOLT_MAX_HEX)
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return -EINVAL;
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step = TPS65911_LDO124_VOLT_STEP;
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break;
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case 3:
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case 5:
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case 6:
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case 7:
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case 8:
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if (hex > TPS65911_LDO358_VOLT_MAX_HEX)
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return -EINVAL;
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if (hex < TPS65911_LDO358_VOLT_MIN_HEX)
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hex = TPS65911_LDO358_VOLT_MIN_HEX;
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step = TPS65911_LDO358_VOLT_STEP;
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break;
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default:
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return -EINVAL;
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};
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return TPS65911_LDO_VOLT_BASE + hex * step;
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}
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static int tps65911_ldo_val(struct udevice *dev, int op, int *uV)
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{
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struct dm_regulator_uclass_plat *uc_pdata =
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dev_get_uclass_plat(dev);
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u32 adr = uc_pdata->ctrl_reg;
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int idx = dev->driver_data;
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int val, hex, ret;
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val = pmic_reg_read(dev->parent, adr);
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if (val < 0)
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return val;
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if (op == PMIC_OP_GET) {
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*uV = 0;
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val &= TPS65911_LDO_SEL_MASK;
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ret = tps65911_ldo_hex2volt(idx, val >> 2);
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if (ret < 0)
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return ret;
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*uV = ret;
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return 0;
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}
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hex = tps65911_ldo_volt2hex(idx, *uV);
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if (hex < 0)
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return hex;
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val &= ~TPS65911_LDO_SEL_MASK;
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return pmic_reg_write(dev->parent, adr, val | hex);
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}
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static int tps65911_ldo_probe(struct udevice *dev)
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{
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struct dm_regulator_uclass_plat *uc_pdata =
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dev_get_uclass_plat(dev);
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u8 idx = dev->driver_data - 1;
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uc_pdata->type = REGULATOR_TYPE_LDO;
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uc_pdata->ctrl_reg = tps65911_ldo_reg[idx];
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return 0;
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}
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static int ldo_get_value(struct udevice *dev)
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{
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int uV;
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int ret;
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ret = tps65911_ldo_val(dev, PMIC_OP_GET, &uV);
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if (ret)
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return ret;
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return uV;
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}
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static int ldo_set_value(struct udevice *dev, int uV)
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{
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return tps65911_ldo_val(dev, PMIC_OP_SET, &uV);
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}
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static const struct dm_regulator_ops tps65911_ldo_ops = {
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.get_value = ldo_get_value,
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.set_value = ldo_set_value,
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.get_enable = tps65911_get_enable,
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.set_enable = tps65911_set_enable,
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};
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U_BOOT_DRIVER(tps65911_ldo) = {
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.name = TPS65911_LDO_DRIVER,
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.id = UCLASS_REGULATOR,
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.ops = &tps65911_ldo_ops,
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.probe = tps65911_ldo_probe,
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};
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