If the connected MIPI CSI-2 RX driver uses the new pre_streamon subdev
call, we don't have to reinitialize the CSI-2 TX after streamoff.
Just put all lanes into LP-11 state during pre_streamon if requested.
Signed-off-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
---
drivers/media/i2c/tc358743.c | 19 ++++++++++++++++++-
1 file changed, 18 insertions(+), 1 deletion(-)
diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c
index 3205cd8298dd..40eec67604e0 100644
--- a/drivers/media/i2c/tc358743.c
+++ b/drivers/media/i2c/tc358743.c
@@ -93,6 +93,7 @@ struct tc358743_state {
struct v4l2_dv_timings timings;
u32 mbus_fmt_code;
u8 csi_lanes_in_use;
+ bool pre_streamon_used;
struct gpio_desc *reset_gpio;
@@ -1637,8 +1638,10 @@ static int tc358743_get_mbus_config(struct v4l2_subdev *sd,
static int tc358743_s_stream(struct v4l2_subdev *sd, int enable)
{
+ struct tc358743_state *state = to_state(sd);
+
enable_stream(sd, enable);
- if (!enable) {
+ if (!enable && !state->pre_streamon_used) {
/* Put all lanes in LP-11 state (STOPSTATE) */
tc358743_set_csi(sd);
}
@@ -1646,6 +1649,19 @@ static int tc358743_s_stream(struct v4l2_subdev *sd, int enable)
return 0;
}
+static int tc358743_pre_streamon(struct v4l2_subdev *sd, u32 flags)
+{
+ struct tc358743_state *state = to_state(sd);
+
+ /* Put all lanes in LP-11 state (STOPSTATE) if requested */
+ if (flags & V4L2_SUBDEV_PRE_STREAMON_FL_MANUAL_LP)
+ tc358743_set_csi(sd);
+
+ state->pre_streamon_used = true;
+
+ return 0;
+}
+
/* --------------- PAD OPS --------------- */
static int tc358743_enum_mbus_code(struct v4l2_subdev *sd,
@@ -1840,6 +1856,7 @@ static const struct v4l2_subdev_video_ops tc358743_video_ops = {
.g_dv_timings = tc358743_g_dv_timings,
.query_dv_timings = tc358743_query_dv_timings,
.s_stream = tc358743_s_stream,
+ .pre_streamon = tc358743_pre_streamon,
};
static const struct v4l2_subdev_pad_ops tc358743_pad_ops = {
--
2.30.2
