Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 92a47674 authored by Alexander Stein's avatar Alexander Stein Committed by Dmitry Torokhov
Browse files

Input: gpio_keys - add support for EV_ABS 



With this patch you can setup a group of GPIOs representing a specific
position on an EV_ABS axis.

Signed-off-by: default avatarAlexander Stein <alexander.stein@informatik.tu-chemnitz.de>
Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent def179c2

drivers/input/keyboard/gpio_keys.c

+7 −2
Original line number Original line Diff line number Diff line
@@ -324,7 +324,12 @@ static void gpio_keys_report_event(struct gpio_button_data *bdata) 
	unsigned int type = button->type ?: EV_KEY;

	unsigned int type = button->type ?: EV_KEY;

	int state = (gpio_get_value_cansleep(button->gpio) ? 1 : 0) ^ button->active_low;

	int state = (gpio_get_value_cansleep(button->gpio) ? 1 : 0) ^ button->active_low;





	if (type == EV_ABS) {

		if (state)

			input_event(input, type, button->code, button->value);

	} else {

		input_event(input, type, button->code, !!state);

		input_event(input, type, button->code, !!state);

	}

	input_sync(input);

	input_sync(input);

}

}
@@ -363,7 +368,7 @@ static int __devinit gpio_keys_setup_key(struct platform_device *pdev, 
					 struct gpio_button_data *bdata,

					 struct gpio_button_data *bdata,

					 struct gpio_keys_button *button)

					 struct gpio_keys_button *button)

{

{

	char *desc = button->desc ? button->desc : "gpio_keys";

	const char *desc = button->desc ? button->desc : "gpio_keys";

	struct device *dev = &pdev->dev;

	struct device *dev = &pdev->dev;

	unsigned long irqflags;

	unsigned long irqflags;

	int irq, error;

	int irq, error;

include/linux/gpio_keys.h

+4 −3
Original line number Original line Diff line number Diff line
@@ -3,14 +3,15 @@ 




struct gpio_keys_button {

struct gpio_keys_button {

	/* Configuration parameters */

	/* Configuration parameters */

	int code;		/* input event code (KEY_*, SW_*) */

	unsigned int code;	/* input event code (KEY_*, SW_*) */

	int gpio;

	int gpio;

	int active_low;

	int active_low;

	char *desc;

	const char *desc;

	int type;		/* input event type (EV_KEY, EV_SW) */

	unsigned int type;	/* input event type (EV_KEY, EV_SW, EV_ABS) */

	int wakeup;		/* configure the button as a wake-up source */

	int wakeup;		/* configure the button as a wake-up source */

	int debounce_interval;	/* debounce ticks interval in msecs */

	int debounce_interval;	/* debounce ticks interval in msecs */

	bool can_disable;

	bool can_disable;

	int value;		/* axis value for EV_ABS */

};

};





struct gpio_keys_platform_data {

struct gpio_keys_platform_data {