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Commit aef5159f authored by Lars-Peter Clausen's avatar Lars-Peter Clausen Committed by Mauro Carvalho Chehab
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[media] adv7842: Add support for control event notifications 



Allow userspace applications to subscribe to control change events. This
can e.g. be used to monitor the 5V detect control to be notified when a
source is connected or disconnected.

Signed-off-by: default avatarLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent 0975626d

drivers/media/i2c/adv7842.c

+4 −1
Original line number Diff line number Diff line
@@ -40,6 +40,7 @@ 
#include <linux/v4l2-dv-timings.h>

#include <linux/hdmi.h>

#include <media/v4l2-device.h>

#include <media/v4l2-event.h>

#include <media/v4l2-ctrls.h>

#include <media/v4l2-dv-timings.h>

#include <media/adv7842.h>
@@ -3015,6 +3016,8 @@ static const struct v4l2_subdev_core_ops adv7842_core_ops = { 
	.log_status = adv7842_log_status,

	.ioctl = adv7842_ioctl,

	.interrupt_service_routine = adv7842_isr,

	.subscribe_event = v4l2_ctrl_subdev_subscribe_event,

	.unsubscribe_event = v4l2_event_subdev_unsubscribe,

#ifdef CONFIG_VIDEO_ADV_DEBUG

	.g_register = adv7842_g_register,

	.s_register = adv7842_s_register,
@@ -3210,7 +3213,7 @@ static int adv7842_probe(struct i2c_client *client, 


	sd = &state->sd;

	v4l2_i2c_subdev_init(sd, client, &adv7842_ops);

	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;

	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;

	state->mode = pdata->mode;



	state->hdmi_port_a = pdata->input == ADV7842_SELECT_HDMI_PORT_A;