Commit e953c103 authored by Marco Felsch's avatar Marco Felsch Committed by Mauro Carvalho Chehab
Browse files

media: tvp5150: add v4l2-event support 



Currently the driver notifies internal subdevs if the signal is locked
or not. This information is also useful for userpace applications e.g. to
switch to another input device upon a signal lost event.

This commit adds the support for the userspace to subscribe to the
V4L2_EVENT_SOURCE_CHANGE and V4L2_EVENT_CTRL events.

Signed-off-by: default avatarMarco Felsch <m.felsch@pengutronix.de>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
parent 73549a69

drivers/media/i2c/tvp5150.c

+17 −1
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ 
#include <linux/regmap.h>

#include <media/v4l2-async.h>

#include <media/v4l2-device.h>

#include <media/v4l2-event.h>

#include <media/v4l2-ctrls.h>

#include <media/v4l2-fwnode.h>

#include <media/v4l2-mc.h>
@@ -1526,6 +1527,19 @@ static int tvp5150_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_regi 
}

#endif



static int tvp5150_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,

				   struct v4l2_event_subscription *sub)

{

	switch (sub->type) {

	case V4L2_EVENT_SOURCE_CHANGE:

		return v4l2_src_change_event_subdev_subscribe(sd, fh, sub);

	case V4L2_EVENT_CTRL:

		return v4l2_ctrl_subdev_subscribe_event(sd, fh, sub);

	default:

		return -EINVAL;

	}

}



static int tvp5150_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)

{

	int status = tvp5150_read(sd, 0x88);
@@ -1617,6 +1631,8 @@ static const struct v4l2_subdev_core_ops tvp5150_core_ops = { 
	.g_register = tvp5150_g_register,

	.s_register = tvp5150_s_register,

#endif

	.subscribe_event = tvp5150_subscribe_event,

	.unsubscribe_event = v4l2_event_subdev_unsubscribe,

};



static const struct v4l2_subdev_tuner_ops tvp5150_tuner_ops = {
@@ -2045,7 +2061,7 @@ static int tvp5150_probe(struct i2c_client *c) 
	sd = &core->sd;

	v4l2_i2c_subdev_init(sd, c, &tvp5150_ops);

	sd->internal_ops = &tvp5150_internal_ops;

	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;

	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;



	if (IS_ENABLED(CONFIG_OF) && np) {

		res = tvp5150_parse_dt(core, np);

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