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https://github.com/brain-hackers/u-boot-brain
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7d5ac91832
This adds support for detecting a few inputs exported by the TWL4030. Currently-supported inputs are the power button, USB and charger presence. Reviewed-by: Tom Rini <trini@konsulko.com> Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
50 lines
875 B
C
50 lines
875 B
C
/*
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* TWL4030 input
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*
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* Copyright (C) 2015 Paul Kocialkowski <contact@paulk.fr>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <twl4030.h>
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int twl4030_input_power_button(void)
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{
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u8 data;
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twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
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TWL4030_PM_MASTER_STS_HW_CONDITIONS, &data);
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if (data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_PWON)
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return 1;
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return 0;
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}
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int twl4030_input_charger(void)
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{
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u8 data;
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twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
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TWL4030_PM_MASTER_STS_HW_CONDITIONS, &data);
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if (data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_CHG)
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return 1;
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return 0;
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}
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int twl4030_input_usb(void)
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{
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u8 data;
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twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
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TWL4030_PM_MASTER_STS_HW_CONDITIONS, &data);
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if (data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_USB ||
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data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_VBUS)
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return 1;
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return 0;
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}
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