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

Commit 3875233d authored by James Hogan's avatar James Hogan Committed by Mauro Carvalho Chehab
Browse files

[media] rc: rc-ir-raw: Add scancode encoder callback 



Add a callback to raw ir handlers for encoding and modulating a scancode
to a set of raw events. This could be used for transmit, or for
converting a wakeup scancode to a form that is more suitable for raw
hardware wake up filters.

Signed-off-by: default avatarJames Hogan <james@albanarts.com>
Signed-off-by: default avatarAntti Seppälä <a.seppala@gmail.com>
Signed-off-by: default avatarSean Young <sean@mess.org>
Cc: David Härdeman <david@hardeman.nu>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@s-opensource.com>
parent 8c34b5c4

drivers/media/rc/rc-core-priv.h

+2 −0
Original line number Diff line number Diff line
@@ -27,6 +27,8 @@ struct ir_raw_handler { 


	u64 protocols; /* which are handled by this handler */

	int (*decode)(struct rc_dev *dev, struct ir_raw_event event);

	int (*encode)(enum rc_type protocol, u32 scancode,

		      struct ir_raw_event *events, unsigned int max);



	/* These two should only be used by the lirc decoder */

	int (*raw_register)(struct rc_dev *dev);

drivers/media/rc/rc-ir-raw.c

+37 −0
Original line number Diff line number Diff line
@@ -238,6 +238,43 @@ static void ir_raw_disable_protocols(struct rc_dev *dev, u64 protocols) 
	mutex_unlock(&dev->lock);

}



/**

 * ir_raw_encode_scancode() - Encode a scancode as raw events

 *

 * @protocol:		protocol

 * @scancode:		scancode filter describing a single scancode

 * @events:		array of raw events to write into

 * @max:		max number of raw events

 *

 * Attempts to encode the scancode as raw events.

 *

 * Returns:	The number of events written.

 *		-ENOBUFS if there isn't enough space in the array to fit the

 *		encoding. In this case all @max events will have been written.

 *		-EINVAL if the scancode is ambiguous or invalid, or if no

 *		compatible encoder was found.

 */

int ir_raw_encode_scancode(enum rc_type protocol, u32 scancode,

			   struct ir_raw_event *events, unsigned int max)

{

	struct ir_raw_handler *handler;

	int ret = -EINVAL;

	u64 mask = 1ULL << protocol;



	mutex_lock(&ir_raw_handler_lock);

	list_for_each_entry(handler, &ir_raw_handler_list, list) {

		if (handler->protocols & mask && handler->encode) {

			ret = handler->encode(protocol, scancode, events, max);

			if (ret >= 0 || ret == -ENOBUFS)

				break;

		}

	}

	mutex_unlock(&ir_raw_handler_lock);



	return ret;

}

EXPORT_SYMBOL(ir_raw_encode_scancode);



/*

 * Used to (un)register raw event clients

 */

include/media/rc-core.h

+2 −0
Original line number Diff line number Diff line
@@ -306,6 +306,8 @@ int ir_raw_event_store_edge(struct rc_dev *dev, enum raw_event_type type); 
int ir_raw_event_store_with_filter(struct rc_dev *dev,

				struct ir_raw_event *ev);

void ir_raw_event_set_idle(struct rc_dev *dev, bool idle);

int ir_raw_encode_scancode(enum rc_type protocol, u32 scancode,

			   struct ir_raw_event *events, unsigned int max);



static inline void ir_raw_event_reset(struct rc_dev *dev)

{