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@xxxxxxxxxxxxxx>
---
Changes since v1:
- Make use of v4l2_subdev_notify_event, v4l2_src_change_event_subdev_subscribe,
and v4l2_ctrl_subdev_subscribe_event.
Changes since v2:
- Actually include the changes of v1, too.
---
drivers/media/i2c/tc358743.c | 19 +++++++++++++++++--
1 file changed, 17 insertions(+), 2 deletions(-)
diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c
index 8c455f3..7eba223 100644
--- a/drivers/media/i2c/tc358743.c
+++ b/drivers/media/i2c/tc358743.c
@@ -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 = {
--
2.1.4
--
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