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https://xff.cz/git/u-boot/
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a273006ffe
This is useful for boot scripts to be able to decide whether to boot or not and whether to notify the user of what is wrong. Signed-off-by: Ondrej Jirman <megous@megous.com>
565 lines
11 KiB
C
565 lines
11 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/gpio.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_dcdc6(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 >= 1120)
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cfg = 50 + axp818_mvolt_to_cfg(mvolt, 1120, 1520, 20);
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else
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cfg = axp818_mvolt_to_cfg(mvolt, 600, 1100, 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_DCDC6_EN);
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ret = pmic_bus_write(AXP818_DCDC6_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_DCDC6_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_gpio0_enable_ldo_set_voltage(u32 mV)
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{
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int ret;
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u8 val;
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if (mV == 0)
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return 0; // do nothing ATM, which is fine since LDO is disabled
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// by default
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else if (mV <= 700)
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val = 0;
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else if (mV >= 3300)
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val = 0x1a;
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else
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val = (mV - 700) / 100;
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ret = pmic_bus_write(AXP_GPIO0_LDO_CTRL, val);
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if (ret)
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return ret;
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return pmic_bus_write(AXP_GPIO0_CTRL, AXP_GPIO_CTRL_LDO_ON);
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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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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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// battery/charger related functions
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int axp_is_charging(bool* charging)
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{
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int ret;
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u8 cs;
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ret = pmic_bus_read(AXP_CHARGER_STATUS, &cs);
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if (ret)
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return ret;
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*charging = (cs & AXP_CHARGER_STATUS_CHARGING);
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return 0;
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}
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int axp_is_vbus_present(bool* vbus)
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{
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int ret;
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u8 ps;
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ret = pmic_bus_read(AXP_POWER_STATUS, &ps);
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if (ret)
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return ret;
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*vbus = (ps & AXP_POWER_STATUS_VBUS_PRESENT) &&
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(ps & AXP_POWER_STATUS_VBUS_VALID);
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return 0;
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}
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int axp_is_battery_present(bool* vbus)
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{
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int ret;
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u8 cs;
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ret = pmic_bus_read(AXP_CHARGER_STATUS, &cs);
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if (ret)
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return ret;
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*vbus = (cs & AXP_CHARGER_STATUS_BAT_PRESENT_VALID) &&
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(cs & AXP_CHARGER_STATUS_BAT_PRESENT);
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return 0;
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}
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int axp_clear_startup_reason(void)
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{
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return pmic_bus_write(AXP_POWER_UP_DOWN_REASON, 0xff);
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}
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static int axp_read_adc(u8 addr_msb, u8 addr_lsb, u32* raw)
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{
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u8 val;
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int ret;
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ret = pmic_bus_read(addr_lsb, &val);
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if (ret)
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return ret;
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*raw = val & 0xf;
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ret = pmic_bus_read(addr_msb, &val);
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if (ret)
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return ret;
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*raw |= (u32)val << 4;
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return 0;
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}
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int axp_get_battery_voltage(int* uV)
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{
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u32 raw;
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int ret;
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ret = axp_read_adc(AXP_AD_BAT_VOLTAGE_MSB8, AXP_AD_BAT_VOLTAGE_LSB4,
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&raw);
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if (ret)
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return ret;
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*uV = (raw) * 1100;
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return 0;
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}
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int axp_get_battery_current(int* uA)
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{
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u32 raw;
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int ret;
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bool charging;
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ret = axp_is_charging(&charging);
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if (ret)
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return ret;
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if (charging)
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ret = axp_read_adc(AXP_AD_BAT_CHG_CURRENT_MSB8,
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AXP_AD_BAT_CHG_CURRENT_LSB4, &raw);
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else
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ret = axp_read_adc(AXP_AD_BAT_DIS_CURRENT_MSB8,
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AXP_AD_BAT_DIS_CURRENT_LSB4, &raw);
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if (ret)
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return ret;
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*uA = raw * 1000;
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return 0;
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}
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int axp_battery_get_capacity(int* capacity)
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{
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int ret;
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u8 val;
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ret = pmic_bus_read(AXP_BATTERY_CAPACITY, &val);
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if (ret)
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return ret;
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if (!(val & 0x80))
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return -EINVAL;
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*capacity = val & 0x7f;
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return 0;
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}
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struct {
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u8 vbus_i;
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int mA;
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} vbus_currents[] = {
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{ AXP_CHARGER_CTRL3_VBUS_I_100, 100 },
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{ AXP_CHARGER_CTRL3_VBUS_I_500, 500 },
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{ AXP_CHARGER_CTRL3_VBUS_I_900, 900 },
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{ AXP_CHARGER_CTRL3_VBUS_I_1500, 1500 },
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{ AXP_CHARGER_CTRL3_VBUS_I_2000, 2000 },
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{ AXP_CHARGER_CTRL3_VBUS_I_2500, 2500 },
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{ AXP_CHARGER_CTRL3_VBUS_I_3000, 3000 },
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{ AXP_CHARGER_CTRL3_VBUS_I_3500, 3500 },
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{ AXP_CHARGER_CTRL3_VBUS_I_4000, 4000 },
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};
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int axp_usb_get_max_current(int* mA)
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{
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int i, ret;
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u8 val;
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ret = pmic_bus_read(AXP_CHARGER_CTRL3, &val);
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if (ret)
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return ret;
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val &= AXP_CHARGER_CTRL3_VBUS_I_MASK;
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*mA = 4000;
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for (i = 0; i < ARRAY_SIZE(vbus_currents); i++) {
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if (vbus_currents[i].vbus_i == val) {
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*mA = vbus_currents[i].mA;
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break;
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}
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}
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return 0;
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}
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int axp_usb_set_max_current(int mA)
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{
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int i, ret;
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u8 val;
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ret = pmic_bus_read(AXP_CHARGER_CTRL3, &val);
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if (ret)
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return ret;
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val &= ~AXP_CHARGER_CTRL3_VBUS_I_MASK;
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for (i = ARRAY_SIZE(vbus_currents) - 1; i >= 0; i--) {
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if (vbus_currents[i].mA <= mA || i == 0) {
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val |= vbus_currents[i].vbus_i;
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break;
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}
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}
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return pmic_bus_write(AXP_CHARGER_CTRL3, val);
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}
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int axp_led_set_charger_controlled(void)
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{
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int ret;
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u8 val;
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ret = pmic_bus_read(AXP_CHGLED, &val);
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if (ret)
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return ret;
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val |= AXP_CHGLED_CTRL_CHARGER;
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return pmic_bus_write(AXP_CHGLED, val);
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}
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int axp_led_set(int mode)
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{
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int ret;
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u8 val;
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ret = pmic_bus_read(AXP_CHGLED, &val);
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if (ret)
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return ret;
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val &= ~(AXP_CHGLED_CTRL_CHARGER | AXP_CHGLED_SETUP_MASK);
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switch (mode) {
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case 0:
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val |= AXP_CHGLED_SETUP_OFF;
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break;
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case 1:
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val |= AXP_CHGLED_SETUP_ON;
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break;
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case 2:
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val |= AXP_CHGLED_SETUP_BLINK_FAST;
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break;
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case 3:
|
|
val |= AXP_CHGLED_SETUP_BLINK_SLOW;
|
|
break;
|
|
default:
|
|
return -1;
|
|
}
|
|
|
|
return pmic_bus_write(AXP_CHGLED, val);
|
|
}
|
|
|
|
int axp_pok_set_quick(void)
|
|
{
|
|
int ret;
|
|
u8 val;
|
|
|
|
ret = pmic_bus_read(AXP_POK, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
val &= ~(AXP_POK_ON_MASK | AXP_POK_OFF_MASK);
|
|
val |= AXP_POK_ON_128MS | AXP_POK_OFF_4S;
|
|
|
|
return pmic_bus_write(AXP_POK, val);
|
|
}
|
|
|
|
int axp_set_bc_en(void)
|
|
{
|
|
int ret;
|
|
u8 val;
|
|
|
|
/* Enable USB Battery Charging specification detection */
|
|
ret = pmic_bus_read(AXP_BC_GLOBAL, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
val |= AXP_BC_GLOBAL_EN;
|
|
|
|
return pmic_bus_write(AXP_BC_GLOBAL, val);
|
|
}
|