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| author | Paul Kocialkowski <contact@paulk.fr> | 2015-07-20 15:17:08 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2015-08-12 20:47:35 -0400 |
| commit | 7d5ac91832918a5fda0277aacb8c62421efdeaa2 (patch) | |
| tree | 928da385cc21facbdd7c3a655e5090675cc01472 | |
| parent | 6dc443e6d7bc2e7e9e2145ba5657dbf309c27c62 (diff) | |
| download | u-boot-imx-7d5ac91832918a5fda0277aacb8c62421efdeaa2.zip u-boot-imx-7d5ac91832918a5fda0277aacb8c62421efdeaa2.tar.gz u-boot-imx-7d5ac91832918a5fda0277aacb8c62421efdeaa2.tar.bz2 | |
input: TWL4030 input support for power button, USB and charger
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>
| -rw-r--r-- | drivers/input/Makefile | 1 | ||||
| -rw-r--r-- | drivers/input/twl4030.c | 49 | ||||
| -rw-r--r-- | include/twl4030.h | 14 |
3 files changed, 64 insertions, 0 deletions
diff --git a/drivers/input/Makefile b/drivers/input/Makefile index a8e9be2..24fec9b 100644 --- a/drivers/input/Makefile +++ b/drivers/input/Makefile @@ -7,6 +7,7 @@ obj-$(CONFIG_I8042_KBD) += i8042.o obj-$(CONFIG_TEGRA_KEYBOARD) += tegra-kbc.o +obj-$(CONFIG_TWL4030_INPUT) += twl4030.o obj-$(CONFIG_CROS_EC_KEYB) += cros_ec_keyb.o ifdef CONFIG_PS2KBD obj-y += keyboard.o pc_keyb.o diff --git a/drivers/input/twl4030.c b/drivers/input/twl4030.c new file mode 100644 index 0000000..a5ded35 --- /dev/null +++ b/drivers/input/twl4030.c @@ -0,0 +1,49 @@ +/* + * TWL4030 input + * + * Copyright (C) 2015 Paul Kocialkowski <contact@paulk.fr> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <twl4030.h> + +int twl4030_input_power_button(void) +{ + u8 data; + + twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER, + TWL4030_PM_MASTER_STS_HW_CONDITIONS, &data); + + if (data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_PWON) + return 1; + + return 0; +} + +int twl4030_input_charger(void) +{ + u8 data; + + twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER, + TWL4030_PM_MASTER_STS_HW_CONDITIONS, &data); + + if (data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_CHG) + return 1; + + return 0; +} + +int twl4030_input_usb(void) +{ + u8 data; + + twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER, + TWL4030_PM_MASTER_STS_HW_CONDITIONS, &data); + + if (data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_USB || + data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_VBUS) + return 1; + + return 0; +} diff --git a/include/twl4030.h b/include/twl4030.h index 2d0ca18..a4d5fbd 100644 --- a/include/twl4030.h +++ b/include/twl4030.h @@ -208,6 +208,12 @@ #define TWL4030_PM_MASTER_SW_EVENTS_DEVSLP (1 << 1) #define TWL4030_PM_MASTER_SW_EVENTS_DEVOFF (1 << 0) +/* HW conditions */ +#define TWL4030_PM_MASTER_STS_HW_CONDITIONS_PWON (1 << 0) +#define TWL4030_PM_MASTER_STS_HW_CONDITIONS_CHG (1 << 1) +#define TWL4030_PM_MASTER_STS_HW_CONDITIONS_USB (1 << 2) +#define TWL4030_PM_MASTER_STS_HW_CONDITIONS_VBUS (1 << 7) + /* Power transition */ #define TWL4030_PM_MASTER_CFG_TRANSITION_STARTON_PWON (1 << 0) #define TWL4030_PM_MASTER_CFG_TRANSITION_STARTON_CHG (1 << 1) @@ -670,6 +676,14 @@ void twl4030_power_init(void); void twl4030_power_mmc_init(int dev_index); /* + * Input + */ + +int twl4030_input_power_button(void); +int twl4030_input_charger(void); +int twl4030_input_usb(void); + +/* * LED */ void twl4030_led_init(unsigned char ledon_mask); |