V4L/DVB: V4L: tvp514x: Add Powerup sequence during s_input to lock the signal properly
For the sequence streamon -> streamoff and again s_input, it fails
to lock the signal, since streamoff puts TVP514x into power off state
which leads to failure in sub-sequent s_input.
So add powerup sequence in s_routing (if disabled), since it is
important to lock the signal at this stage.
Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Signed-off-by: Muralidharan Karicheri <mkaricheri@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/tvp514x.c b/drivers/media/video/tvp514x.c
index e4815a1..e826114 100644
--- a/drivers/media/video/tvp514x.c
+++ b/drivers/media/video/tvp514x.c
@@ -79,6 +79,8 @@
};
static struct tvp514x_reg tvp514x_reg_list_default[0x40];
+
+static int tvp514x_s_stream(struct v4l2_subdev *sd, int enable);
/**
* struct tvp514x_decoder - TVP5146/47 decoder object
* @sd: Subdevice Slave handle
@@ -644,6 +646,17 @@
/* Index out of bound */
return -EINVAL;
+ /*
+ * For the sequence streamon -> streamoff and again s_input
+ * it fails to lock the signal, since streamoff puts TVP514x
+ * into power off state which leads to failure in sub-sequent s_input.
+ *
+ * So power up the TVP514x device here, since it is important to lock
+ * the signal at this stage.
+ */
+ if (!decoder->streaming)
+ tvp514x_s_stream(sd, 1);
+
input_sel = input;
output_sel = output;