From aef5159ffc6bbf65d77af3a2e5b3d377c7c4f37a Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Wed, 24 Jun 2015 13:50:28 -0300 Subject: [PATCH] [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: Lars-Peter Clausen Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/i2c/adv7842.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/media/i2c/adv7842.c b/drivers/media/i2c/adv7842.c index aa0d1a04543b..0535463d2fed 100644 --- a/drivers/media/i2c/adv7842.c +++ b/drivers/media/i2c/adv7842.c @@ -40,6 +40,7 @@ #include #include #include +#include #include #include #include @@ -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;