mirror of
https://github.com/brain-hackers/u-boot-brain
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
277 lines
5.6 KiB
C
277 lines
5.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* AXP221 and AXP223 driver
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*
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* IMPORTANT when making changes to this file check that the registers
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* used are the same for the axp221 and axp223.
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*
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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 axp221_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 = axp221_mvolt_to_cfg(mvolt, 1600, 3400, 100);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_DCDC1_EN);
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ret = pmic_bus_write(AXP221_DCDC1_CTRL, cfg);
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if (ret)
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return ret;
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ret = pmic_bus_setbits(AXP221_OUTPUT_CTRL2,
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AXP221_OUTPUT_CTRL2_DCDC1SW_EN);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP221_OUTPUT_CTRL1,
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AXP221_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 = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_DCDC2_EN);
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ret = pmic_bus_write(AXP221_DCDC2_CTRL, cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP221_OUTPUT_CTRL1,
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AXP221_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 = axp221_mvolt_to_cfg(mvolt, 600, 1860, 20);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_DCDC3_EN);
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ret = pmic_bus_write(AXP221_DCDC3_CTRL, cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_DCDC3_EN);
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}
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int axp_set_dcdc4(unsigned int mvolt)
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{
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int ret;
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u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_DCDC4_EN);
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ret = pmic_bus_write(AXP221_DCDC4_CTRL, cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_DCDC4_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 = axp221_mvolt_to_cfg(mvolt, 1000, 2550, 50);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_DCDC5_EN);
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ret = pmic_bus_write(AXP221_DCDC5_CTRL, cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_DCDC5_EN);
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}
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int axp_set_aldo1(unsigned int mvolt)
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{
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int ret;
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u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_ALDO1_EN);
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ret = pmic_bus_write(AXP221_ALDO1_CTRL, cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_ALDO1_EN);
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}
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int axp_set_aldo2(unsigned int mvolt)
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{
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int ret;
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u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_ALDO2_EN);
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ret = pmic_bus_write(AXP221_ALDO2_CTRL, cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_ALDO2_EN);
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}
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int axp_set_aldo3(unsigned int mvolt)
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{
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int ret;
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u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP221_OUTPUT_CTRL3,
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AXP221_OUTPUT_CTRL3_ALDO3_EN);
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ret = pmic_bus_write(AXP221_ALDO3_CTRL, cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP221_OUTPUT_CTRL3,
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AXP221_OUTPUT_CTRL3_ALDO3_EN);
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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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u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
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int ret;
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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(AXP221_OUTPUT_CTRL2,
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AXP221_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1));
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ret = pmic_bus_write(AXP221_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(AXP221_OUTPUT_CTRL2,
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AXP221_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 = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
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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(AXP221_OUTPUT_CTRL2,
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AXP221_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1));
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ret = pmic_bus_write(AXP221_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(AXP221_OUTPUT_CTRL2,
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AXP221_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1));
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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(AXP221_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 == 0x6 || axp_chip_id == 0x7 || axp_chip_id == 0x17))
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return -ENODEV;
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/*
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* Turn off LDOIO regulators / tri-state GPIO pins, when rebooting
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* from android these are sometimes on.
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*/
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ret = pmic_bus_write(AXP_GPIO0_CTRL, AXP_GPIO_CTRL_INPUT);
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if (ret)
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return ret;
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ret = pmic_bus_write(AXP_GPIO1_CTRL, AXP_GPIO_CTRL_INPUT);
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if (ret)
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return ret;
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return 0;
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}
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int axp_get_sid(unsigned int *sid)
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{
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u8 *dest = (u8 *)sid;
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int i, 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_write(AXP221_PAGE, 1);
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if (ret)
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return ret;
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for (i = 0; i < 16; i++) {
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ret = pmic_bus_read(AXP221_SID + i, &dest[i]);
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if (ret)
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return ret;
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}
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pmic_bus_write(AXP221_PAGE, 0);
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for (i = 0; i < 4; i++)
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sid[i] = be32_to_cpu(sid[i]);
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return 0;
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}
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int do_poweroff(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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pmic_bus_write(AXP221_SHUTDOWN, AXP221_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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