From: Mats Randgaard <matra...@cisco.com>
The bridge driver is only notified when the input status has changed
since the previous interrupt.
Signed-off-by: Mats Randgaard <matra...@cisco.com>
Signed-off-by: Hans Verkuil <hans.verk...@cisco.com>
---
drivers/media/i2c/adv7604.c | 20 +++++++++++++++++---
1 file changed, 17 insertions(+), 3 deletions(-)
diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c
index 3ec7ec0..d093092 100644
--- a/drivers/media/i2c/adv7604.c
+++ b/drivers/media/i2c/adv7604.c
@@ -77,6 +77,7 @@ struct adv7604_state {
struct delayed_work delayed_work_enable_hotplug;
bool connector_hdmi;
bool restart_stdi_once;
+ u32 prev_input_status;
/* i2c clients */
struct i2c_client *i2c_avlink;
@@ -1535,6 +1536,7 @@ static int adv7604_isr(struct v4l2_subdev *sd, u32
status, bool *handled)
{
struct adv7604_state *state = to_state(sd);
u8 fmt_change, fmt_change_digital, tx_5v;
+ u32 input_status;
/* format change */
fmt_change = io_read(sd, 0x43) & 0x98;
@@ -1545,9 +1547,18 @@ static int adv7604_isr(struct v4l2_subdev *sd, u32
status, bool *handled)
io_write(sd, 0x6c, fmt_change_digital);
if (fmt_change || fmt_change_digital) {
v4l2_dbg(1, debug, sd,
- "%s: ADV7604_FMT_CHANGE, fmt_change = 0x%x,
fmt_change_digital = 0x%x\n",
+ "%s: fmt_change = 0x%x, fmt_change_digital = 0x%x\n",
__func__, fmt_change, fmt_change_digital);
- v4l2_subdev_notify(sd, ADV7604_FMT_CHANGE, NULL);
+
+ adv7604_g_input_status(sd, &input_status);
+ if (input_status != state->prev_input_status) {
+ v4l2_dbg(1, debug, sd,
+ "%s: input_status = 0x%x, prev_input_status =
0x%x\n",
+ __func__, input_status,
state->prev_input_status);
+ state->prev_input_status = input_status;
+ v4l2_subdev_notify(sd, ADV7604_FMT_CHANGE, NULL);
+ }
+
if (handled)
*handled = true;
}
@@ -1953,6 +1964,10 @@ static int adv7604_probe(struct i2c_client *client,
return -ENOMEM;
}
+ /* initialize variables */
+ state->restart_stdi_once = true;
+ state->prev_input_status = ~0;
+
/* platform data */
if (!pdata) {
v4l_err(client, "No platform data!\n");
@@ -2036,7 +2051,6 @@ static int adv7604_probe(struct i2c_client *client,
v4l2_err(sd, "failed to create all i2c clients\n");
goto err_i2c;
}
- state->restart_stdi_once = true;
/* work queues */
state->work_queues = create_singlethread_workqueue(client->name);
--
1.8.3.2
--
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