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The sysreset uclass has an option to provide the do_poweroff() function. When that option is enabled, the AXP power drivers should not provide their own definition. For the AXP305, which is paired with 64-bit systems where TF-A provides PSCI, there is another possible conflict with the PSCI firmware driver. This driver can be enabled even if CONFIG_PSCI_RESET is disabled, so make sure to use the right symbol in the condition. Signed-off-by: Samuel Holland <samuel@sholland.org> Reviewed-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Andre Przywara <andre.przywara@arm.com>
269 lines
5.6 KiB
C
269 lines
5.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* AXP818 driver based on AXP221 driver
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*
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*
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* (C) Copyright 2015 Vishnu Patekar <vishnuptekar0510@gmail.com>
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*
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* Based on axp221.c
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* (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com>
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* (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl>
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*/
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#include <common.h>
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#include <command.h>
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#include <errno.h>
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#include <asm/arch/pmic_bus.h>
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#include <axp_pmic.h>
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static u8 axp818_mvolt_to_cfg(int mvolt, int min, int max, int div)
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{
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if (mvolt < min)
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mvolt = min;
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else if (mvolt > max)
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mvolt = max;
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return (mvolt - min) / div;
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}
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int axp_set_dcdc1(unsigned int mvolt)
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{
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int ret;
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u8 cfg = axp818_mvolt_to_cfg(mvolt, 1600, 3400, 100);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
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AXP818_OUTPUT_CTRL1_DCDC1_EN);
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ret = pmic_bus_write(AXP818_DCDC1_CTRL, cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
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AXP818_OUTPUT_CTRL1_DCDC1_EN);
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}
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int axp_set_dcdc2(unsigned int mvolt)
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{
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int ret;
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u8 cfg;
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if (mvolt >= 1220)
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cfg = 70 + axp818_mvolt_to_cfg(mvolt, 1220, 1300, 20);
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else
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cfg = axp818_mvolt_to_cfg(mvolt, 500, 1200, 10);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
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AXP818_OUTPUT_CTRL1_DCDC2_EN);
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ret = pmic_bus_write(AXP818_DCDC2_CTRL, cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
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AXP818_OUTPUT_CTRL1_DCDC2_EN);
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}
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int axp_set_dcdc3(unsigned int mvolt)
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{
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int ret;
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u8 cfg;
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if (mvolt >= 1220)
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cfg = 70 + axp818_mvolt_to_cfg(mvolt, 1220, 1300, 20);
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else
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cfg = axp818_mvolt_to_cfg(mvolt, 500, 1200, 10);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
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AXP818_OUTPUT_CTRL1_DCDC3_EN);
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ret = pmic_bus_write(AXP818_DCDC3_CTRL, cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
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AXP818_OUTPUT_CTRL1_DCDC3_EN);
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}
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int axp_set_dcdc5(unsigned int mvolt)
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{
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int ret;
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u8 cfg;
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if (mvolt >= 1140)
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cfg = 32 + axp818_mvolt_to_cfg(mvolt, 1140, 1840, 20);
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else
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cfg = axp818_mvolt_to_cfg(mvolt, 800, 1120, 10);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
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AXP818_OUTPUT_CTRL1_DCDC5_EN);
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ret = pmic_bus_write(AXP818_DCDC5_CTRL, cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
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AXP818_OUTPUT_CTRL1_DCDC5_EN);
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}
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int axp_set_aldo(int aldo_num, unsigned int mvolt)
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{
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int ret;
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u8 cfg;
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if (aldo_num < 1 || aldo_num > 3)
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return -EINVAL;
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP818_OUTPUT_CTRL3,
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AXP818_OUTPUT_CTRL3_ALDO1_EN << (aldo_num - 1));
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cfg = axp818_mvolt_to_cfg(mvolt, 700, 3300, 100);
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ret = pmic_bus_write(AXP818_ALDO1_CTRL + (aldo_num - 1), cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP818_OUTPUT_CTRL3,
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AXP818_OUTPUT_CTRL3_ALDO1_EN << (aldo_num - 1));
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}
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/* TODO: re-work other AXP drivers to consolidate ALDO functions. */
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int axp_set_aldo1(unsigned int mvolt)
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{
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return axp_set_aldo(1, mvolt);
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}
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int axp_set_aldo2(unsigned int mvolt)
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{
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return axp_set_aldo(2, mvolt);
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}
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int axp_set_aldo3(unsigned int mvolt)
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{
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return axp_set_aldo(3, mvolt);
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}
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int axp_set_dldo(int dldo_num, unsigned int mvolt)
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{
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int ret;
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u8 cfg;
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if (dldo_num < 1 || dldo_num > 4)
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return -EINVAL;
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP818_OUTPUT_CTRL2,
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AXP818_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1));
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cfg = axp818_mvolt_to_cfg(mvolt, 700, 3300, 100);
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if (dldo_num == 2 && mvolt > 3300)
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cfg += 1 + axp818_mvolt_to_cfg(mvolt, 3400, 4200, 200);
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ret = pmic_bus_write(AXP818_DLDO1_CTRL + (dldo_num - 1), cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP818_OUTPUT_CTRL2,
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AXP818_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1));
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}
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int axp_set_eldo(int eldo_num, unsigned int mvolt)
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{
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int ret;
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u8 cfg;
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if (eldo_num < 1 || eldo_num > 3)
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return -EINVAL;
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP818_OUTPUT_CTRL2,
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AXP818_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1));
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cfg = axp818_mvolt_to_cfg(mvolt, 700, 1900, 50);
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ret = pmic_bus_write(AXP818_ELDO1_CTRL + (eldo_num - 1), cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP818_OUTPUT_CTRL2,
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AXP818_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1));
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}
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int axp_set_fldo(int fldo_num, unsigned int mvolt)
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{
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int ret;
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u8 cfg;
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if (fldo_num < 1 || fldo_num > 3)
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return -EINVAL;
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP818_OUTPUT_CTRL3,
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AXP818_OUTPUT_CTRL3_FLDO1_EN << (fldo_num - 1));
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if (fldo_num < 3) {
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cfg = axp818_mvolt_to_cfg(mvolt, 700, 1450, 50);
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ret = pmic_bus_write(AXP818_FLDO1_CTRL + (fldo_num - 1), cfg);
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} else {
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/*
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* Special case for FLDO3, which is DCDC5 / 2 or FLDOIN / 2
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* Since FLDOIN is unknown, test against DCDC5.
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*/
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if (mvolt * 2 == CONFIG_AXP_DCDC5_VOLT)
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ret = pmic_bus_clrbits(AXP818_FLDO2_3_CTRL,
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AXP818_FLDO2_3_CTRL_FLDO3_VOL);
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else
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ret = pmic_bus_setbits(AXP818_FLDO2_3_CTRL,
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AXP818_FLDO2_3_CTRL_FLDO3_VOL);
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}
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP818_OUTPUT_CTRL3,
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AXP818_OUTPUT_CTRL3_FLDO1_EN << (fldo_num - 1));
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}
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int axp_set_sw(bool on)
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{
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if (on)
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return pmic_bus_setbits(AXP818_OUTPUT_CTRL2,
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AXP818_OUTPUT_CTRL2_SW_EN);
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return pmic_bus_clrbits(AXP818_OUTPUT_CTRL2,
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AXP818_OUTPUT_CTRL2_SW_EN);
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}
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int axp_init(void)
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{
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u8 axp_chip_id;
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int ret;
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ret = pmic_bus_init();
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if (ret)
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return ret;
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ret = pmic_bus_read(AXP818_CHIP_ID, &axp_chip_id);
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if (ret)
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return ret;
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if (!(axp_chip_id == 0x51))
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return -ENODEV;
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else
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return ret;
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return 0;
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}
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#if !IS_ENABLED(CONFIG_SYSRESET_CMD_POWEROFF)
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int do_poweroff(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
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{
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pmic_bus_write(AXP818_SHUTDOWN, AXP818_SHUTDOWN_POWEROFF);
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/* infinite loop during shutdown */
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while (1) {}
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/* not reached */
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return 0;
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}
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#endif
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