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| author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2019-09-09 10:06:09 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-09-09 11:03:53 +0200 |
| commit | ea06d25a931324f8c082d13522c9125468cec317 (patch) | |
| tree | d371672ff16489845e6b7c51bf24be6afbfaf2fc /drivers/input | |
| parent | 66bd3f1c4cc3b76ef40f95dd2ee5a5c60d22c446 (diff) | |
| download | barebox-ea06d25a931324f8c082d13522c9125468cec317.tar.gz barebox-ea06d25a931324f8c082d13522c9125468cec317.tar.xz | |
input: add handler for reset and power key input events
Kernel device trees may indicate linux,code = KEY_POWER or KEY_RESTART,
mostly for gpio-keys. Make barebox able to act on them by registering an
appropriate input notifier.
Suggested-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/input')
| -rw-r--r-- | drivers/input/Kconfig | 6 | ||||
| -rw-r--r-- | drivers/input/Makefile | 1 | ||||
| -rw-r--r-- | drivers/input/specialkeys.c | 36 |
3 files changed, 43 insertions, 0 deletions
diff --git a/drivers/input/Kconfig b/drivers/input/Kconfig index 1f89ae3892..be061683fb 100644 --- a/drivers/input/Kconfig +++ b/drivers/input/Kconfig @@ -64,4 +64,10 @@ config KEYBOARD_USB help This driver implements support for usb keyboard. +config INPUT_SPECIALKEYS + bool "Special keys handler" + select INPUT + help + Say Y here to handle key events like KEY_RESTART and KEY_POWER. + endmenu diff --git a/drivers/input/Makefile b/drivers/input/Makefile index e694a98d10..36a4204d53 100644 --- a/drivers/input/Makefile +++ b/drivers/input/Makefile @@ -5,3 +5,4 @@ obj-$(CONFIG_KEYBOARD_GPIO) += gpio_keys.o obj-$(CONFIG_KEYBOARD_TWL6030) += twl6030_pwrbtn.o obj-$(CONFIG_KEYBOARD_IMX_KEYPAD) += imx_keypad.o obj-$(CONFIG_KEYBOARD_QT1070) += qt1070.o +obj-$(CONFIG_INPUT_SPECIALKEYS) += specialkeys.o diff --git a/drivers/input/specialkeys.c b/drivers/input/specialkeys.c new file mode 100644 index 0000000000..ff29b8455d --- /dev/null +++ b/drivers/input/specialkeys.c @@ -0,0 +1,36 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2019 Ahmad Fatoum, Pengutronix + +#include <common.h> +#include <restart.h> +#include <poweroff.h> +#include <init.h> +#include <input/input.h> +#include <dt-bindings/input/linux-event-codes.h> + +static void input_specialkeys_notify(struct input_notifier *in, + struct input_event *ev) +{ + switch (ev->code) { + case KEY_RESTART: + pr_info("Triggering reset due to special key.\n", ev->code); + restart_machine(); + break; + + case KEY_POWER: + pr_info("Triggering poweroff due to special key.\n", ev->code); + poweroff_machine(); + break; + } + + pr_debug("ignoring code: %d\n", ev->code); +} + +static struct input_notifier notifier; + +static int input_specialkeys_init(void) +{ + notifier.notify = input_specialkeys_notify; + return input_register_notfier(¬ifier); +} +late_initcall(input_specialkeys_init); |