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Re: [RFC] [media] imx: assume MEDIA_ENT_F_ATV_DECODER entities output video on pad 1

From Philipp Zabel <p.zabel@pengutronix.de>
Newsgroups linux.kernel
Subject Re: [RFC] [media] imx: assume MEDIA_ENT_F_ATV_DECODER entities output video on pad 1
Date 2017-04-05 11:50 +0200
Message-ID <tsPJE-UB-15@gated-at.bofh.it> (permalink)
References <tpNuG-7Yq-3@gated-at.bofh.it> <tpNEm-82k-21@gated-at.bofh.it> <tqM3v-1dT-7@gated-at.bofh.it> <tsEXT-2s7-7@gated-at.bofh.it>
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On Tue, 2017-04-04 at 15:11 -0700, Steve Longerbeam wrote:
> 
> 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 <p.zabel@pengutronix.de>
> > ---
> > 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?

In this case, probably yes for the input pad, certainly no for the
VBI/audio pads. See the other mail.

> I haven't seen this documented anywhere, but shouldn't there
> be a 1:1 correspondence between DT ports and media pads?

Not in general. But imagine a dual HDMI->CSI2 converter, for example. We
don't support this yet, but that might reasonably be described in the
device tree as a single device with two output ports. But the internal
representation would be two completely separate v4l2 subdevices.

regards
Philipp

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[PATCH v6 00/39] i.MX Media Driver Steve Longerbeam <slongerbeam@gmail.com> - 2017-03-28 02:50 +0200
  [PATCH v6 28/39] media: imx: csi: fix crop rectangle changes in set_fmt Steve Longerbeam <slongerbeam@gmail.com> - 2017-03-28 02:50 +0200
  [PATCH v6 10/39] ARM: dts: imx6-sabreauto: create i2cmux for i2c3 Steve Longerbeam <slongerbeam@gmail.com> - 2017-03-28 02:50 +0200
  [PATCH v6 37/39] media: imx-csi: add frame size/interval enumeration Steve Longerbeam <slongerbeam@gmail.com> - 2017-03-28 02:50 +0200
  [PATCH v6 11/39] ARM: dts: imx6-sabreauto: add reset-gpios property for max7310_b Steve Longerbeam <slongerbeam@gmail.com> - 2017-03-28 02:50 +0200
  [PATCH v6 21/39] media: imx: Add CSI subdev driver Steve Longerbeam <slongerbeam@gmail.com> - 2017-03-28 02:50 +0200
    [PATCH] [media] imx: csi: retain current field order and  colorimetry setting as default Philipp Zabel <p.zabel@pengutronix.de> - 2017-04-06 16:00 +0200
      Re: [PATCH] [media] imx: csi: retain current field order and  colorimetry setting as default Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-04-06 16:10 +0200
        Re: [PATCH] [media] imx: csi: retain current field order and  colorimetry setting as default Philipp Zabel <p.zabel@pengutronix.de> - 2017-04-06 17:10 +0200
          Re: [PATCH] [media] imx: csi: retain current field order and  colorimetry setting as default Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-04-06 17:20 +0200
            Re: [PATCH] [media] imx: csi: retain current field order and  colorimetry setting as default Philipp Zabel <p.zabel@pengutronix.de> - 2017-04-06 17:30 +0200
      Re: [PATCH] [media] imx: csi: retain current field order and  colorimetry setting as default Hans Verkuil <hverkuil@xs4all.nl> - 2017-04-06 16:30 +0200
        Re: [PATCH] [media] imx: csi: retain current field order and  colorimetry setting as default Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-04-06 16:50 +0200
        Re: [PATCH] [media] imx: csi: retain current field order and  colorimetry setting as default Philipp Zabel <p.zabel@pengutronix.de> - 2017-04-06 17:00 +0200
          Re: [PATCH] [media] imx: csi: retain current field order and  colorimetry setting as default Hans Verkuil <hverkuil@xs4all.nl> - 2017-04-06 17:50 +0200
            Re: [PATCH] [media] imx: csi: retain current field order and  colorimetry setting as default Philipp Zabel <p.zabel@pengutronix.de> - 2017-04-06 18:10 +0200
        Re: [PATCH] [media] imx: csi: retain current field order and  colorimetry setting as default Philipp Zabel <p.zabel@pengutronix.de> - 2017-04-06 17:20 +0200
  [PATCH v6 01/39] [media] dt-bindings: Add bindings for video-multiplexer device Steve Longerbeam <slongerbeam@gmail.com> - 2017-03-28 02:50 +0200
    Re: [PATCH v6 01/39] [media] dt-bindings: Add bindings for  video-multiplexer device Rob Herring <robh@kernel.org> - 2017-04-03 16:20 +0200
  [PATCH v6 06/39] ARM: dts: imx6qdl: add capture-subsystem device Steve Longerbeam <slongerbeam@gmail.com> - 2017-03-28 02:50 +0200
  [PATCH v6 25/39] ARM: imx_v6_v7_defconfig: Enable staging video4linux drivers Steve Longerbeam <slongerbeam@gmail.com> - 2017-03-28 02:50 +0200
  [PATCH v6 05/39] ARM: dts: imx6qdl: Add mipi_ipu1/2 multiplexers, mipi_csi, and their connections Steve Longerbeam <slongerbeam@gmail.com> - 2017-03-28 02:50 +0200
  [PATCH v6 04/39] ARM: dts: imx6qdl: Add compatible, clocks, irqs to MIPI CSI-2 node Steve Longerbeam <slongerbeam@gmail.com> - 2017-03-28 03:00 +0200
  [PATCH v6 14/39] add mux and video interface bridge entity functions Steve Longerbeam <slongerbeam@gmail.com> - 2017-03-28 03:00 +0200
  [PATCH v6 15/39] [media] v4l2-mc: add a function to inherit controls from a pipeline Steve Longerbeam <slongerbeam@gmail.com> - 2017-03-28 03:00 +0200
  [PATCH v6 08/39] ARM: dts: imx6-sabrelite: add OV5642 and OV5640 camera sensors Steve Longerbeam <slongerbeam@gmail.com> - 2017-03-28 03:00 +0200
  [PATCH v6 13/39] ARM: dts: imx6-sabreauto: add the ADV7180 video decoder Steve Longerbeam <slongerbeam@gmail.com> - 2017-03-28 03:00 +0200
  [PATCH v6 03/39] [media] dt/bindings: Add bindings for OV5640 Steve Longerbeam <slongerbeam@gmail.com> - 2017-03-28 03:00 +0200
    Re: [PATCH v6 03/39] [media] dt/bindings: Add bindings for OV5640 Rob Herring <robh@kernel.org> - 2017-04-03 16:20 +0200
  [PATCH v6 12/39] ARM: dts: imx6-sabreauto: add pinctrl for gpt input capture Steve Longerbeam <slongerbeam@gmail.com> - 2017-03-28 03:00 +0200
  Re: [PATCH v6 00/39] i.MX Media Driver Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-03-30 13:10 +0200
    Re: [PATCH v6 00/39] i.MX Media Driver Steve Longerbeam <slongerbeam@gmail.com> - 2017-03-30 18:20 +0200
      Re: [PATCH v6 00/39] i.MX Media Driver Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-03-30 18:30 +0200
  [RFC] [media] imx: assume MEDIA_ENT_F_ATV_DECODER entities output  video on pad 1 Philipp Zabel <p.zabel@pengutronix.de> - 2017-03-30 19:30 +0200
    Re: [RFC] [media] imx: assume MEDIA_ENT_F_ATV_DECODER entities output  video on pad 1 Steve Longerbeam <slongerbeam@gmail.com> - 2017-04-05 00:20 +0200
      Re: [RFC] [media] imx: assume MEDIA_ENT_F_ATV_DECODER entities  output video on pad 1 Philipp Zabel <p.zabel@pengutronix.de> - 2017-04-05 11:50 +0200
    Re: [RFC] [media] imx: assume MEDIA_ENT_F_ATV_DECODER entities  output video on pad 1 Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-04-05 01:20 +0200
      Re: [RFC] [media] imx: assume MEDIA_ENT_F_ATV_DECODER entities output  video on pad 1 Steve Longerbeam <slongerbeam@gmail.com> - 2017-04-05 02:50 +0200
        Re: [RFC] [media] imx: assume MEDIA_ENT_F_ATV_DECODER entities  output video on pad 1 Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-04-05 10:30 +0200
          Re: [RFC] [media] imx: assume MEDIA_ENT_F_ATV_DECODER entities  output video on pad 1 Philipp Zabel <p.zabel@pengutronix.de> - 2017-04-05 11:40 +0200
            Re: [RFC] [media] imx: assume MEDIA_ENT_F_ATV_DECODER entities output  video on pad 1 Javier Martinez Canillas <javier@dowhile0.org> - 2017-04-05 16:00 +0200
            Re: [RFC] [media] imx: assume MEDIA_ENT_F_ATV_DECODER entities  output video on pad 1 Mauro Carvalho Chehab <mchehab@s-opensource.com> - 2017-04-05 17:00 +0200
              Re: [RFC] [media] imx: assume MEDIA_ENT_F_ATV_DECODER entities output  video on pad 1 Devin Heitmueller <dheitmueller@kernellabs.com> - 2017-04-05 17:50 +0200
                Re: [RFC] [media] imx: assume MEDIA_ENT_F_ATV_DECODER entities  output video on pad 1 Mauro Carvalho Chehab <mchehab@s-opensource.com> - 2017-04-05 18:20 +0200
                Re: [RFC] [media] imx: assume MEDIA_ENT_F_ATV_DECODER entities output  video on pad 1 Devin Heitmueller <dheitmueller@kernellabs.com> - 2017-04-05 19:10 +0200
                Re: [RFC] [media] imx: assume MEDIA_ENT_F_ATV_DECODER entities  output video on pad 1 Mauro Carvalho Chehab <mchehab@s-opensource.com> - 2017-04-05 19:20 +0200
              Re: [RFC] [media] imx: assume MEDIA_ENT_F_ATV_DECODER entities  output video on pad 1 Philipp Zabel <p.zabel@pengutronix.de> - 2017-04-06 12:10 +0200
      Re: [RFC] [media] imx: assume MEDIA_ENT_F_ATV_DECODER entities output  video on pad 1 Steve Longerbeam <slongerbeam@gmail.com> - 2017-04-05 02:50 +0200
  Re: [PATCH v6 19/39] media: Add i.MX media core driver Pavel Machek <pavel@ucw.cz> - 2017-04-05 13:40 +0200
  Re: [PATCH v6 19/39] media: Add i.MX media core driver Pavel Machek <pavel@ucw.cz> - 2017-04-05 13:40 +0200
  Re: [PATCH v6 19/39] media: Add i.MX media core driver Philipp Zabel <p.zabel@pengutronix.de> - 2017-04-06 11:50 +0200
    Re: [PATCH v6 19/39] media: Add i.MX media core driver Steve Longerbeam <slongerbeam@gmail.com> - 2017-04-07 02:00 +0200

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