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[media] tc358743: allow event subscription 

This is useful to subscribe to HDMI hotplug events via the
V4L2_CID_DV_RX_POWER_PRESENT control.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Philipp Zabel 2015-07-17 12:26:45 -03:00 committed by Mauro Carvalho Chehab
parent d747b806ab
commit 1140f919f8
1 changed files with 17 additions and 2 deletions
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19
drivers/media/i2c/tc358743.c
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@ -40,6 +40,7 @@
#include <media/v4l2-dv-timings.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-event.h>
#include <media/v4l2-of.h>
#include <media/tc358743.h>
@ -859,8 +860,7 @@ static void tc358743_format_change(struct v4l2_subdev *sd)
&timings, false);
}
v4l2_subdev_notify(sd, V4L2_DEVICE_NOTIFY_EVENT,
(void *)&tc358743_ev_fmt);
v4l2_subdev_notify_event(sd, &tc358743_ev_fmt);
}
static void tc358743_init_interrupts(struct v4l2_subdev *sd)
@ -1317,6 +1317,19 @@ static irqreturn_t tc358743_irq_handler(int irq, void *dev_id)
return handled ? IRQ_HANDLED : IRQ_NONE;
}
static int tc358743_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;
}
}
/* --------------- VIDEO OPS --------------- */
static int tc358743_g_input_status(struct v4l2_subdev *sd, u32 *status)
@ -1604,6 +1617,8 @@ static const struct v4l2_subdev_core_ops tc358743_core_ops = {
.s_register = tc358743_s_register,
#endif
.interrupt_service_routine = tc358743_isr,
.subscribe_event = tc358743_subscribe_event,
.unsubscribe_event = v4l2_event_subdev_unsubscribe,
};
static const struct v4l2_subdev_video_ops tc358743_video_ops = {