diff options
author | Paul Kocialkowski <contact@paulk.fr> | 2016-02-27 19:19:13 +0100 |
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committer | Tom Rini <trini@konsulko.com> | 2016-03-15 15:12:57 -0400 |
commit | 461484c27e1d72980eae4826eb9788a156cdf00e (patch) | |
tree | 74d9dc1e146c181fb301fa2b7afcbc61e8a7313c /drivers | |
parent | d6a2042dbcd4a3a3d8282c77a5882104a5c399a7 (diff) | |
download | u-boot-imx-461484c27e1d72980eae4826eb9788a156cdf00e.zip u-boot-imx-461484c27e1d72980eae4826eb9788a156cdf00e.tar.gz u-boot-imx-461484c27e1d72980eae4826eb9788a156cdf00e.tar.bz2 |
input: TWL6030 input support for power button, USB and charger
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>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/input/Makefile | 1 | ||||
-rw-r--r-- | drivers/input/twl6030.c | 48 |
2 files changed, 49 insertions, 0 deletions
diff --git a/drivers/input/Makefile b/drivers/input/Makefile index 5f15265..9109ac6 100644 --- a/drivers/input/Makefile +++ b/drivers/input/Makefile @@ -10,6 +10,7 @@ obj-$(CONFIG_DM_KEYBOARD) += keyboard-uclass.o obj-$(CONFIG_I8042_KEYB) += i8042.o obj-$(CONFIG_TEGRA_KEYBOARD) += tegra-kbc.o obj-$(CONFIG_TWL4030_INPUT) += twl4030.o +obj-$(CONFIG_TWL6030_INPUT) += twl6030.o obj-$(CONFIG_CROS_EC_KEYB) += cros_ec_keyb.o ifdef CONFIG_PS2KBD obj-y += keyboard.o pc_keyb.o diff --git a/drivers/input/twl6030.c b/drivers/input/twl6030.c new file mode 100644 index 0000000..8de032a --- /dev/null +++ b/drivers/input/twl6030.c @@ -0,0 +1,48 @@ +/* + * TWL6030 input + * + * Copyright (C) 2016 Paul Kocialkowski <contact@paulk.fr> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <twl6030.h> + +int twl6030_input_power_button(void) +{ + u8 value; + + twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_STS_HW_CONDITIONS, &value); + + /* Power button is active low. */ + if (value & TWL6030_STS_HW_CONDITIONS_PWRON) + return 0; + + return 1; +} + +int twl6030_input_charger(void) +{ + u8 value; + + twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, TWL6030_CONTROLLER_STAT1, + &value); + + if (value & TWL6030_CONTROLLER_STAT1_VAC_DET) + return 1; + + return 0; +} + +int twl6030_input_usb(void) +{ + u8 value; + + twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, TWL6030_CONTROLLER_STAT1, + &value); + + if (value & TWL6030_CONTROLLER_STAT1_VBUS_DET) + return 1; + + return 0; +} |