Commit 63b59cec authored by Vaibhav Hiremath's avatar Vaibhav Hiremath Committed by Mauro Carvalho Chehab
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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: default avatarVaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: default avatarSudhakar Rajashekhara <sudhakar.raj@ti.com>
Signed-off-by: default avatarMuralidharan Karicheri <mkaricheri@gmail.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 844cc0dc

drivers/media/video/tvp514x.c

+13 −0
Original line number Diff line number Diff line
@@ -79,6 +79,8 @@ struct tvp514x_std_info { 
};



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 @@ static int tvp514x_s_routing(struct v4l2_subdev *sd, 
		/* 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;