mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-28 13:53:44 +09:00
750d49f5a4
vbus-usable may not get set if power is provided through both the power barrel connector and external 5v is also present on the otg connector, at least on boards where vbus is also controlled through the axp221-pmic. One way to reproduce this is to bootup an Ippo-q8h board with a usb-host cable plugged into the otg (so that it will get powered), then unplug the usb-host cable and plug in a charger, and then do "reset" on the u-boot console, vbus-usable will then report 0, leading to uboot trying to provide power to the otg port even though external 5v is present, this commit fixes this. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
452 lines
8.7 KiB
C
452 lines
8.7 KiB
C
/*
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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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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <errno.h>
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#include <asm/arch/p2wi.h>
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#include <asm/arch/rsb.h>
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#include <asm/arch/gpio.h>
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#include <axp221.h>
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/*
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* The axp221 uses the p2wi bus, the axp223 is identical (for all registers
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* used sofar) but uses the rsb bus. These functions abstract this.
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*/
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static int pmic_bus_init(void)
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{
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#ifdef CONFIG_MACH_SUN6I
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p2wi_init();
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return p2wi_change_to_p2wi_mode(AXP221_CHIP_ADDR, AXP221_CTRL_ADDR,
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AXP221_INIT_DATA);
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#else
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int ret;
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ret = rsb_init();
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if (ret)
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return ret;
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return rsb_set_device_address(AXP223_DEVICE_ADDR, AXP223_RUNTIME_ADDR);
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#endif
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}
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static int pmic_bus_read(const u8 addr, u8 *data)
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{
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#ifdef CONFIG_MACH_SUN6I
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return p2wi_read(addr, data);
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#else
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return rsb_read(AXP223_RUNTIME_ADDR, addr, data);
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#endif
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}
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static int pmic_bus_write(const u8 addr, u8 data)
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{
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#ifdef CONFIG_MACH_SUN6I
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return p2wi_write(addr, data);
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#else
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return rsb_write(AXP223_RUNTIME_ADDR, addr, data);
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#endif
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}
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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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static int axp221_setbits(u8 reg, u8 bits)
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{
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int ret;
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u8 val;
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ret = pmic_bus_read(reg, &val);
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if (ret)
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return ret;
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val |= bits;
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return pmic_bus_write(reg, val);
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}
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static int axp221_clrbits(u8 reg, u8 bits)
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{
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int ret;
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u8 val;
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ret = pmic_bus_read(reg, &val);
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if (ret)
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return ret;
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val &= ~bits;
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return pmic_bus_write(reg, val);
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}
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int axp221_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 axp221_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 = axp221_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 axp221_setbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_DCDC1_EN);
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}
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int axp221_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 axp221_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 axp221_setbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_DCDC2_EN);
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}
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int axp221_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 axp221_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 axp221_setbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_DCDC3_EN);
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}
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int axp221_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 axp221_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 axp221_setbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_DCDC4_EN);
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}
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int axp221_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 axp221_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 axp221_setbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_DCDC5_EN);
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}
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int axp221_set_dldo1(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 axp221_clrbits(AXP221_OUTPUT_CTRL2,
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AXP221_OUTPUT_CTRL2_DLDO1_EN);
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ret = pmic_bus_write(AXP221_DLDO1_CTRL, cfg);
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if (ret)
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return ret;
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return axp221_setbits(AXP221_OUTPUT_CTRL2,
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AXP221_OUTPUT_CTRL2_DLDO1_EN);
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}
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int axp221_set_dldo2(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 axp221_clrbits(AXP221_OUTPUT_CTRL2,
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AXP221_OUTPUT_CTRL2_DLDO2_EN);
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ret = pmic_bus_write(AXP221_DLDO2_CTRL, cfg);
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if (ret)
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return ret;
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return axp221_setbits(AXP221_OUTPUT_CTRL2,
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AXP221_OUTPUT_CTRL2_DLDO2_EN);
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}
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int axp221_set_dldo3(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 axp221_clrbits(AXP221_OUTPUT_CTRL2,
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AXP221_OUTPUT_CTRL2_DLDO3_EN);
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ret = pmic_bus_write(AXP221_DLDO3_CTRL, cfg);
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if (ret)
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return ret;
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return axp221_setbits(AXP221_OUTPUT_CTRL2,
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AXP221_OUTPUT_CTRL2_DLDO3_EN);
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}
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int axp221_set_dldo4(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 axp221_clrbits(AXP221_OUTPUT_CTRL2,
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AXP221_OUTPUT_CTRL2_DLDO4_EN);
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ret = pmic_bus_write(AXP221_DLDO4_CTRL, cfg);
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if (ret)
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return ret;
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return axp221_setbits(AXP221_OUTPUT_CTRL2,
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AXP221_OUTPUT_CTRL2_DLDO4_EN);
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}
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int axp221_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 axp221_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 axp221_setbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_ALDO1_EN);
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}
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int axp221_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 axp221_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 axp221_setbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_ALDO2_EN);
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}
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int axp221_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 axp221_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 axp221_setbits(AXP221_OUTPUT_CTRL3,
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AXP221_OUTPUT_CTRL3_ALDO3_EN);
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}
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int axp221_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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u8 addr, bits;
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switch (eldo_num) {
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case 3:
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addr = AXP221_ELDO3_CTRL;
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bits = AXP221_OUTPUT_CTRL2_ELDO3_EN;
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break;
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case 2:
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addr = AXP221_ELDO2_CTRL;
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bits = AXP221_OUTPUT_CTRL2_ELDO2_EN;
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break;
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case 1:
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addr = AXP221_ELDO1_CTRL;
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bits = AXP221_OUTPUT_CTRL2_ELDO1_EN;
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break;
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default:
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return -EINVAL;
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}
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if (mvolt == 0)
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return axp221_clrbits(AXP221_OUTPUT_CTRL2, bits);
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ret = pmic_bus_write(addr, cfg);
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if (ret)
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return ret;
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return axp221_setbits(AXP221_OUTPUT_CTRL2, bits);
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}
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int axp221_init(void)
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{
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/* This cannot be 0 because it is used in SPL before BSS is ready */
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static int needs_init = 1;
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u8 axp_chip_id;
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int ret;
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if (!needs_init)
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return 0;
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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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needs_init = 0;
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return 0;
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}
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int axp221_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 = axp221_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 axp_gpio_direction_input(unsigned int pin)
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{
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switch (pin) {
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case SUNXI_GPIO_AXP0_VBUS_DETECT:
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return 0;
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default:
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return -EINVAL;
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}
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}
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int axp_gpio_direction_output(unsigned int pin, unsigned int val)
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{
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int ret;
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switch (pin) {
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case SUNXI_GPIO_AXP0_VBUS_ENABLE:
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ret = axp221_clrbits(AXP221_MISC_CTRL,
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AXP221_MISC_CTRL_N_VBUSEN_FUNC);
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if (ret)
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return ret;
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return axp_gpio_set_value(pin, val);
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default:
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return -EINVAL;
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}
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}
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int axp_gpio_get_value(unsigned int pin)
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{
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int ret;
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u8 val;
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switch (pin) {
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case SUNXI_GPIO_AXP0_VBUS_DETECT:
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ret = pmic_bus_read(AXP221_POWER_STATUS, &val);
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if (ret)
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return ret;
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return !!(val & AXP221_POWER_STATUS_VBUS_AVAIL);
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default:
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return -EINVAL;
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}
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}
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int axp_gpio_set_value(unsigned int pin, unsigned int val)
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{
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int ret;
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switch (pin) {
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case SUNXI_GPIO_AXP0_VBUS_ENABLE:
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if (val)
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ret = axp221_setbits(AXP221_VBUS_IPSOUT,
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AXP221_VBUS_IPSOUT_DRIVEBUS);
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else
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ret = axp221_clrbits(AXP221_VBUS_IPSOUT,
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AXP221_VBUS_IPSOUT_DRIVEBUS);
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if (ret)
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return ret;
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}
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return 0;
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}
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