From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i7Egi-0002sl-Ux for barebox@lists.infradead.org; Mon, 09 Sep 2019 08:06:18 +0000 From: Ahmad Fatoum Date: Mon, 9 Sep 2019 10:06:09 +0200 Message-Id: <20190909080609.2235-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH v2] input: add handler for reset and power key input events To: barebox@lists.infradead.org Cc: Oleksij Rempel , Ahmad Fatoum 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 Signed-off-by: Ahmad Fatoum --- v1 -> v2: - announce reset/power on info log level, so users are aware why it happens. Suggested by Oleksij --- drivers/input/Kconfig | 6 ++++++ drivers/input/Makefile | 1 + drivers/input/specialkeys.c | 36 ++++++++++++++++++++++++++++++++++++ 3 files changed, 43 insertions(+) create mode 100644 drivers/input/specialkeys.c diff --git a/drivers/input/Kconfig b/drivers/input/Kconfig index 1f89ae3892dc..be061683fb0a 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 e694a98d1087..36a4204d5308 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 000000000000..ff29b8455d7a --- /dev/null +++ b/drivers/input/specialkeys.c @@ -0,0 +1,36 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2019 Ahmad Fatoum, Pengutronix + +#include +#include +#include +#include +#include +#include + +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); -- 2.23.0 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox