Subscribe to the V4L2_EVENT_SOURCE_CHANGE event and send
V4L2_EVENT_SRC_CH_RESOLUTION in the interrupt handler on a
detected standard change.
Signed-off-by: Steve Longerbeam <steve_longerbeam@xxxxxxxxxx>
---
drivers/media/i2c/adv7180.c | 33 ++++++++++++++++++++++++++++++---
1 file changed, 30 insertions(+), 3 deletions(-)
diff --git a/drivers/media/i2c/adv7180.c b/drivers/media/i2c/adv7180.c
index 427695d..f76a0e7 100644
--- a/drivers/media/i2c/adv7180.c
+++ b/drivers/media/i2c/adv7180.c
@@ -28,6 +28,7 @@
#include <linux/of.h>
#include <linux/gpio/consumer.h>
#include <media/v4l2-ioctl.h>
+#include <media/v4l2-event.h>
#include <linux/videodev2.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
@@ -824,6 +825,20 @@ static int adv7180_g_tvnorms(struct v4l2_subdev *sd, v4l2_std_id *norm)
return 0;
}
+static int adv7180_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;
+ }
+}
+
static const struct v4l2_subdev_video_ops adv7180_video_ops = {
.s_std = adv7180_s_std,
.g_std = adv7180_g_std,
@@ -838,6 +853,8 @@ static const struct v4l2_subdev_video_ops adv7180_video_ops = {
static const struct v4l2_subdev_core_ops adv7180_core_ops = {
.s_power = adv7180_s_power,
+ .subscribe_event = adv7180_subscribe_event,
+ .unsubscribe_event = v4l2_event_subdev_unsubscribe,
};
static const struct v4l2_subdev_pad_ops adv7180_pad_ops = {
@@ -862,8 +879,18 @@ static irqreturn_t adv7180_irq(int irq, void *devid)
/* clear */
adv7180_write(state, ADV7180_REG_ICR3, isr3);
- if (isr3 & ADV7180_IRQ3_AD_CHANGE && state->autodetect)
- __adv7180_status(state, NULL, &state->curr_norm);
+ if (isr3 & ADV7180_IRQ3_AD_CHANGE) {
+ static const struct v4l2_event src_ch = {
+ .type = V4L2_EVENT_SOURCE_CHANGE,
+ .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
+ };
+
+ v4l2_subdev_notify_event(&state->sd, &src_ch);
+
+ if (state->autodetect)
+ __adv7180_status(state, NULL, &state->curr_norm);
+ }
+
mutex_unlock(&state->mutex);
return IRQ_HANDLED;
@@ -1403,7 +1430,7 @@ static int adv7180_probe(struct i2c_client *client,
state->input = 0;
sd = &state->sd;
v4l2_i2c_subdev_init(sd, client, &adv7180_ops);
- sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
+ sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
ret = adv7180_init_controls(state);
if (ret)
--
1.9.1
--
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