From: Vaibhav Hiremath Date: Sat, 27 Mar 2010 12:37:54 +0000 (-0300) Subject: V4L/DVB: V4L: tvp514x: Add Powerup sequence during s_input to lock the signal properly X-Git-Tag: v3.12-rc1~10285^2~282 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=63b59cecb2fa0a274d1c7240112460816d826988;p=kernel%2Fkernel-generic.git 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 Signed-off-by: Sudhakar Rajashekhara Signed-off-by: Muralidharan Karicheri Signed-off-by: Mauro Carvalho Chehab --- 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 @@ 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;