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/*
* AXP809 driver
*
* (C) Copyright 2016 Theobroma Systems Design und Consulting GmbH
* Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
*
* based on AXP221/AXP223 driver (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 <command.h>
#include <errno.h>
#include <asm/arch/pmic_bus.h>
#include <axp_pmic.h>
static u8 axp809_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_dc5ldo(unsigned int mvolt)
{
int ret;
u8 cfg = axp809_mvolt_to_cfg(mvolt, 700, 1400, 100);
if (mvolt == 0)
return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1,
AXP809_OUTPUT_CTRL1_DC5LDO_EN);
ret = pmic_bus_write(AXP809_DC5LDO_CTRL, cfg);
if (ret)
return ret;
return pmic_bus_setbits(AXP809_OUTPUT_CTRL1,
AXP809_OUTPUT_CTRL1_DC5LDO_EN);
}
int axp_set_dcdc1(unsigned int mvolt)
{
int ret;
u8 cfg = axp809_mvolt_to_cfg(mvolt, 1600, 3400, 100);
if (mvolt == 0)
return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1,
AXP809_OUTPUT_CTRL1_DCDC1_EN);
ret = pmic_bus_write(AXP809_DCDC1_CTRL, cfg);
if (ret)
return ret;
ret = pmic_bus_setbits(AXP809_OUTPUT_CTRL2,
AXP809_OUTPUT_CTRL2_DC1SW_EN);
if (ret)
return ret;
return pmic_bus_setbits(AXP809_OUTPUT_CTRL1,
AXP809_OUTPUT_CTRL1_DCDC1_EN);
}
int axp_set_dcdc2(unsigned int mvolt)
{
int ret;
u8 cfg = axp809_mvolt_to_cfg(mvolt, 600, 1540, 20);
if (mvolt == 0)
return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1,
AXP809_OUTPUT_CTRL1_DCDC2_EN);
ret = pmic_bus_write(AXP809_DCDC2_CTRL, cfg);
if (ret)
return ret;
return pmic_bus_setbits(AXP809_OUTPUT_CTRL1,
AXP809_OUTPUT_CTRL1_DCDC2_EN);
}
int axp_set_dcdc3(unsigned int mvolt)
{
int ret;
u8 cfg = axp809_mvolt_to_cfg(mvolt, 600, 1860, 20);
if (mvolt == 0)
return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1,
AXP809_OUTPUT_CTRL1_DCDC3_EN);
ret = pmic_bus_write(AXP809_DCDC3_CTRL, cfg);
if (ret)
return ret;
return pmic_bus_setbits(AXP809_OUTPUT_CTRL1,
AXP809_OUTPUT_CTRL1_DCDC3_EN);
}
int axp_set_dcdc4(unsigned int mvolt)
{
int ret;
u8 cfg;
/* DCDC4 has two separate ramps:
20mV steps for 600mV ... 1540mV
100mV steps for 1800mV ... 2600mV
*/
cfg = axp809_mvolt_to_cfg(mvolt, 600, 1540, 20);
cfg += axp809_mvolt_to_cfg(mvolt, 1800, 2600, 100);
if (mvolt == 0)
return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1,
AXP809_OUTPUT_CTRL1_DCDC4_EN);
ret = pmic_bus_write(AXP809_DCDC4_CTRL, cfg);
if (ret)
return ret;
return pmic_bus_setbits(AXP809_OUTPUT_CTRL1,
AXP809_OUTPUT_CTRL1_DCDC4_EN);
}
int axp_set_dcdc5(unsigned int mvolt)
{
int ret;
u8 cfg = axp809_mvolt_to_cfg(mvolt, 1000, 2550, 50);
if (mvolt == 0)
return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1,
AXP809_OUTPUT_CTRL1_DCDC5_EN);
ret = pmic_bus_write(AXP809_DCDC5_CTRL, cfg);
if (ret)
return ret;
return pmic_bus_setbits(AXP809_OUTPUT_CTRL1,
AXP809_OUTPUT_CTRL1_DCDC5_EN);
}
int axp_set_aldo1(unsigned int mvolt)
{
int ret;
u8 cfg = axp809_mvolt_to_cfg(mvolt, 700, 3300, 100);
if (mvolt == 0)
return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1,
AXP809_OUTPUT_CTRL1_ALDO1_EN);
ret = pmic_bus_write(AXP809_ALDO1_CTRL, cfg);
if (ret)
return ret;
return pmic_bus_setbits(AXP809_OUTPUT_CTRL1,
AXP809_OUTPUT_CTRL1_ALDO1_EN);
}
int axp_set_aldo2(unsigned int mvolt)
{
int ret;
u8 cfg = axp809_mvolt_to_cfg(mvolt, 700, 3300, 100);
if (mvolt == 0)
return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1,
AXP809_OUTPUT_CTRL1_ALDO2_EN);
ret = pmic_bus_write(AXP809_ALDO2_CTRL, cfg);
if (ret)
return ret;
return pmic_bus_setbits(AXP809_OUTPUT_CTRL1,
AXP809_OUTPUT_CTRL1_ALDO2_EN);
}
int axp_set_aldo3(unsigned int mvolt)
{
int ret;
u8 cfg = axp809_mvolt_to_cfg(mvolt, 700, 3300, 100);
if (mvolt == 0)
return pmic_bus_clrbits(AXP809_OUTPUT_CTRL2,
AXP809_OUTPUT_CTRL2_ALDO3_EN);
ret = pmic_bus_write(AXP809_ALDO3_CTRL, cfg);
if (ret)
return ret;
return pmic_bus_setbits(AXP809_OUTPUT_CTRL2,
AXP809_OUTPUT_CTRL2_ALDO3_EN);
}
int axp_set_dldo(int dldo_num, unsigned int mvolt)
{
u8 cfg = axp809_mvolt_to_cfg(mvolt, 700, 3300, 100);
int ret;
if (dldo_num < 1 || dldo_num > 2)
return -EINVAL;
if (mvolt == 0)
return pmic_bus_clrbits(AXP809_OUTPUT_CTRL2,
AXP809_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1));
ret = pmic_bus_write(AXP809_DLDO1_CTRL + (dldo_num - 1), cfg);
if (ret)
return ret;
return pmic_bus_setbits(AXP809_OUTPUT_CTRL2,
AXP809_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1));
}
int axp_set_eldo(int eldo_num, unsigned int mvolt)
{
int ret;
u8 cfg = axp809_mvolt_to_cfg(mvolt, 700, 3300, 100);
u8 addr, bits;
switch (eldo_num) {
case 3:
addr = AXP809_ELDO3_CTRL;
bits = AXP809_OUTPUT_CTRL2_ELDO3_EN;
break;
case 2:
addr = AXP809_ELDO2_CTRL;
bits = AXP809_OUTPUT_CTRL2_ELDO2_EN;
break;
case 1:
addr = AXP809_ELDO1_CTRL;
bits = AXP809_OUTPUT_CTRL2_ELDO1_EN;
break;
default:
return -EINVAL;
}
if (mvolt == 0)
return pmic_bus_clrbits(AXP809_OUTPUT_CTRL2, bits);
ret = pmic_bus_write(addr, cfg);
if (ret)
return ret;
return pmic_bus_setbits(AXP809_OUTPUT_CTRL2, bits);
}
int axp_init(void)
{
u8 axp_chip_id;
int ret;
ret = pmic_bus_init();
if (ret)
return ret;
ret = pmic_bus_read(AXP809_VERSION, &axp_chip_id);
if (ret)
return ret;
axp_chip_id &= AXP809_VERSION_CHIPID_MASK;
if (!(axp_chip_id == AXP809_VERSION_CHIPID))
return -ENODEV;
return 0;
}
int do_poweroff(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
pmic_bus_write(AXP809_SHUTDOWN, AXP809_SHUTDOWN_POWEROFF);
/* infinite loop during shutdown */
while (1) {}
/* not reached */
return 0;
}
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