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/*
* AXP818 driver based on AXP221 driver
*
*
* (C) Copyright 2015 Vishnu Patekar <vishnuptekar0510@gmail.com>
*
* Based on axp221.c
* (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com>
* (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <errno.h>
#include <asm/arch/gpio.h>
#include <asm/arch/pmic_bus.h>
#include <axp_pmic.h>
static u8 axp818_mvolt_to_cfg(int mvolt, int min, int max, int div)
{
if (mvolt < min)
mvolt = min;
else if (mvolt > max)
mvolt = max;
return (mvolt - min) / div;
}
int axp_set_dcdc1(unsigned int mvolt)
{
int ret;
u8 cfg = axp818_mvolt_to_cfg(mvolt, 1600, 3400, 100);
if (mvolt == 0)
return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
AXP818_OUTPUT_CTRL1_DCDC1_EN);
ret = pmic_bus_write(AXP818_DCDC1_CTRL, cfg);
if (ret)
return ret;
return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
AXP818_OUTPUT_CTRL1_DCDC1_EN);
}
int axp_set_dcdc2(unsigned int mvolt)
{
int ret;
u8 cfg;
if (mvolt >= 1220)
cfg = 70 + axp818_mvolt_to_cfg(mvolt, 1220, 1300, 20);
else
cfg = axp818_mvolt_to_cfg(mvolt, 500, 1200, 10);
if (mvolt == 0)
return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
AXP818_OUTPUT_CTRL1_DCDC2_EN);
ret = pmic_bus_write(AXP818_DCDC2_CTRL, cfg);
if (ret)
return ret;
return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
AXP818_OUTPUT_CTRL1_DCDC2_EN);
}
int axp_set_dcdc3(unsigned int mvolt)
{
int ret;
u8 cfg;
if (mvolt >= 1220)
cfg = 70 + axp818_mvolt_to_cfg(mvolt, 1220, 1300, 20);
else
cfg = axp818_mvolt_to_cfg(mvolt, 500, 1200, 10);
if (mvolt == 0)
return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
AXP818_OUTPUT_CTRL1_DCDC3_EN);
ret = pmic_bus_write(AXP818_DCDC3_CTRL, cfg);
if (ret)
return ret;
return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
AXP818_OUTPUT_CTRL1_DCDC3_EN);
}
int axp_set_dcdc5(unsigned int mvolt)
{
int ret;
u8 cfg;
if (mvolt >= 1140)
cfg = 32 + axp818_mvolt_to_cfg(mvolt, 1140, 1840, 20);
else
cfg = axp818_mvolt_to_cfg(mvolt, 800, 1120, 10);
if (mvolt == 0)
return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
AXP818_OUTPUT_CTRL1_DCDC5_EN);
ret = pmic_bus_write(AXP818_DCDC5_CTRL, cfg);
if (ret)
return ret;
return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
AXP818_OUTPUT_CTRL1_DCDC5_EN);
}
int axp_set_dldo(int dldo_num, unsigned int mvolt)
{
int ret;
u8 cfg;
if (dldo_num < 1 || dldo_num > 4)
return -EINVAL;
if (mvolt == 0)
return pmic_bus_clrbits(AXP818_OUTPUT_CTRL2,
AXP818_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1));
cfg = axp818_mvolt_to_cfg(mvolt, 700, 3300, 100);
if (dldo_num == 2 && mvolt > 3300)
cfg += 1 + axp818_mvolt_to_cfg(mvolt, 3400, 4200, 200);
ret = pmic_bus_write(AXP818_ELDO1_CTRL + (dldo_num - 1), cfg);
if (ret)
return ret;
return pmic_bus_setbits(AXP818_OUTPUT_CTRL2,
AXP818_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1));
}
int axp_set_eldo(int eldo_num, unsigned int mvolt)
{
int ret;
u8 cfg;
if (eldo_num < 1 || eldo_num > 3)
return -EINVAL;
if (mvolt == 0)
return pmic_bus_clrbits(AXP818_OUTPUT_CTRL2,
AXP818_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1));
cfg = axp818_mvolt_to_cfg(mvolt, 700, 1900, 50);
ret = pmic_bus_write(AXP818_ELDO1_CTRL + (eldo_num - 1), cfg);
if (ret)
return ret;
return pmic_bus_setbits(AXP818_OUTPUT_CTRL2,
AXP818_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1));
}
int axp_init(void)
{
u8 axp_chip_id;
int ret;
ret = pmic_bus_init();
if (ret)
return ret;
ret = pmic_bus_read(AXP818_CHIP_ID, &axp_chip_id);
if (ret)
return ret;
if (!(axp_chip_id == 0x51))
return -ENODEV;
else
return ret;
return 0;
}
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