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Commit 534565f2 authored by Dmitry Torokhov's avatar Dmitry Torokhov
Browse files

Input: add input_set_capability() helper 



Add input_set_capability() helper used to indicate that an input
device supports a certain event without need to manipulate bitmaps
directly.

Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent b9973954

drivers/input/input.c

+56 −0
Original line number Diff line number Diff line
@@ -1046,6 +1046,62 @@ void input_free_device(struct input_dev *dev) 
}

EXPORT_SYMBOL(input_free_device);



/**

 * input_set_capability - mark device as capable of a certain event

 * @dev: device that is capable of emitting or accepting event

 * @type: type of the event (EV_KEY, EV_REL, etc...)

 * @code: event code

 *

 * In addition to setting up corresponding bit in appropriate capability

 * bitmap the function also adjusts dev->evbit.

 */

void input_set_capability(struct input_dev *dev, unsigned int type, unsigned int code)

{

	switch (type) {

	case EV_KEY:

		__set_bit(code, dev->keybit);

		break;



	case EV_REL:

		__set_bit(code, dev->relbit);

		break;



	case EV_ABS:

		__set_bit(code, dev->absbit);

		break;



	case EV_MSC:

		__set_bit(code, dev->mscbit);

		break;



	case EV_SW:

		__set_bit(code, dev->swbit);

		break;



	case EV_LED:

		__set_bit(code, dev->ledbit);

		break;



	case EV_SND:

		__set_bit(code, dev->sndbit);

		break;



	case EV_FF:

		__set_bit(code, dev->ffbit);

		break;



	default:

		printk(KERN_ERR

			"input_set_capability: unknown type %u (code %u)\n",

			type, code);

		dump_stack();

		return;

	}



	__set_bit(type, dev->evbit);

}

EXPORT_SYMBOL(input_set_capability);



int input_register_device(struct input_dev *dev)

{

	static atomic_t input_no = ATOMIC_INIT(0);

include/linux/input.h

+2 −0
Original line number Diff line number Diff line
@@ -1160,6 +1160,8 @@ static inline void input_sync(struct input_dev *dev) 
	input_event(dev, EV_SYN, SYN_REPORT, 0);

}



void input_set_capability(struct input_dev *dev, unsigned int type, unsigned int code);



static inline void input_set_abs_params(struct input_dev *dev, int axis, int min, int max, int fuzz, int flat)

{

	dev->absmin[axis] = min;