From mboxrd@z Thu Jan 1 00:00:00 1970 From: slongerbeam@gmail.com (Steve Longerbeam) Date: Tue, 4 Apr 2017 15:11:46 -0700 Subject: [RFC] [media] imx: assume MEDIA_ENT_F_ATV_DECODER entities output video on pad 1 In-Reply-To: <1490894749.2404.33.camel@pengutronix.de> References: <1490661656-10318-1-git-send-email-steve_longerbeam@mentor.com> <1490661656-10318-20-git-send-email-steve_longerbeam@mentor.com> <1490894749.2404.33.camel@pengutronix.de> Message-ID: <9bfabc5c-d90f-6487-537d-20515ec61f9c@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 03/30/2017 10:25 AM, Philipp Zabel wrote: > The TVP5150 DT bindings specify a single output port (port 0) that > corresponds to the video output pad (pad 1, DEMOD_PAD_VID_OUT). > > Signed-off-by: Philipp Zabel > --- > I'm trying to get this to work with a TVP5150 analog TV decoder, and the > first problem is that this device doesn't have pad 0 as its single > output pad. Instead, as a MEDIA_ENT_F_ATV_DECODER entity, it has for > pads (input, video out, vbi out, audio out), and video out is pad 1, > whereas the device tree only defines a single port (0). Shouldn't the DT bindings define ports for these other pads? I haven't seen this documented anywhere, but shouldn't there be a 1:1 correspondence between DT ports and media pads? Steve > --- > > drivers/staging/media/imx/imx-media-dev.c | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/drivers/staging/media/imx/imx-media-dev.c b/drivers/staging/media/imx/imx-media-dev.c > index 17e2386a3ca3a..c52d6ca797965 100644 > --- a/drivers/staging/media/imx/imx-media-dev.c > +++ b/drivers/staging/media/imx/imx-media-dev.c > @@ -267,6 +267,15 @@ static int imx_media_create_link(struct imx_media_dev *imxmd, > source_pad = link->local_pad; > sink_pad = link->remote_pad; > > + /* > + * If the source subdev is an analog video decoder with a single source > + * port, assume that this port 0 corresponds to the DEMOD_PAD_VID_OUT > + * entity pad. > + */ > + if (source->entity.function == MEDIA_ENT_F_ATV_DECODER && > + local_sd->num_sink_pads == 0 && local_sd->num_src_pads == 1) > + source_pad = DEMOD_PAD_VID_OUT; > + > v4l2_info(&imxmd->v4l2_dev, "%s: %s:%d -> %s:%d\n", __func__, > source->name, source_pad, sink->name, sink_pad); > >