461484c27e
This adds support for detecting a few inputs exported by the TWL6030. Currently-supported inputs are the power button, USB and charger presence. Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
49 lines
781 B
C
49 lines
781 B
C
/*
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* TWL6030 input
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*
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* Copyright (C) 2016 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 <twl6030.h>
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int twl6030_input_power_button(void)
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{
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u8 value;
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twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_STS_HW_CONDITIONS, &value);
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/* Power button is active low. */
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if (value & TWL6030_STS_HW_CONDITIONS_PWRON)
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return 0;
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return 1;
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}
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int twl6030_input_charger(void)
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{
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u8 value;
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twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, TWL6030_CONTROLLER_STAT1,
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&value);
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if (value & TWL6030_CONTROLLER_STAT1_VAC_DET)
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return 1;
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return 0;
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}
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int twl6030_input_usb(void)
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{
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u8 value;
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twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, TWL6030_CONTROLLER_STAT1,
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&value);
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if (value & TWL6030_CONTROLLER_STAT1_VBUS_DET)
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return 1;
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return 0;
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}
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