diff options
| author | Lars-Peter Clausen <lars@metafoo.de> | 2015-06-24 19:50:28 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-07-17 15:44:45 +0300 |
| commit | aef5159ffc6bbf65d77af3a2e5b3d377c7c4f37a (patch) | |
| tree | bcb010e90f6353cfa6f47bdbc270d33bea27e3f0 /drivers/media/i2c/adv7842.c | |
| parent | 0975626d08b623ad42c89a6294b7c2f8391c69af (diff) | |
| download | linux-aef5159ffc6bbf65d77af3a2e5b3d377c7c4f37a.tar.xz | |
[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 <lars@metafoo.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/i2c/adv7842.c')
| -rw-r--r-- | drivers/media/i2c/adv7842.c | 5 |
1 files changed, 4 insertions, 1 deletions
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 <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; |