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Message-ID: <ixckmdku6yriieo4ezzsepg5nflltzkvqbt7ylref4mu6a4t26@crooexpf3v57>
Date: Mon, 4 Nov 2024 14:00:56 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Liu Ying <victor.liu@....com>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>, Hans Verkuil <hverkuil-cisco@...all.nl>
Cc: dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-media@...r.kernel.org, imx@...ts.linux.dev,
linux-arm-kernel@...ts.infradead.org, andrzej.hajda@...el.com, neil.armstrong@...aro.org,
rfoss@...nel.org, Laurent.pinchart@...asonboard.com, jonas@...boo.se,
jernej.skrabec@...il.com, maarten.lankhorst@...ux.intel.com, mripard@...nel.org,
tzimmermann@...e.de, airlied@...il.com, simona@...ll.ch, robh@...nel.org,
krzk+dt@...nel.org, conor+dt@...nel.org, quic_jesszhan@...cinc.com,
mchehab@...nel.org, shawnguo@...nel.org, s.hauer@...gutronix.de,
kernel@...gutronix.de, festevam@...il.com, catalin.marinas@....com, will@...nel.org,
sakari.ailus@...ux.intel.com, hverkuil@...all.nl, tomi.valkeinen@...asonboard.com,
quic_bjorande@...cinc.com, geert+renesas@...der.be, arnd@...db.de, nfraprado@...labora.com,
thierry.reding@...il.com, prabhakar.mahadev-lad.rj@...renesas.com, sam@...nborg.org,
marex@...x.de, biju.das.jz@...renesas.com
Subject: Re: [PATCH v5 04/13] media: uapi: Add
MEDIA_BUS_FMT_RGB101010_1X7X5_{SPWG, JEIDA}
On Mon, Nov 04, 2024 at 11:27:57AM +0800, Liu Ying wrote:
> Add two media bus formats that identify 30-bit RGB pixels transmitted
> by a LVDS link with five differential data pairs, serialized into 7
> time slots, using standard SPWG/VESA or JEIDA data mapping.
>
> Signed-off-by: Liu Ying <victor.liu@....com>
> ---
> v5:
> * No change.
>
> v4:
> * No change.
>
> v3:
> * New patch.
>
> .../media/v4l/subdev-formats.rst | 156 +++++++++++++++++-
> include/uapi/linux/media-bus-format.h | 4 +-
> 2 files changed, 157 insertions(+), 3 deletions(-)
Laurent, Hans, can we please hear your opinion on this patch?
Ideally we'd like to merge it together with the rest of the series
through drm-misc (or via an immutable tag/branch from your side).
>
> diff --git a/Documentation/userspace-api/media/v4l/subdev-formats.rst b/Documentation/userspace-api/media/v4l/subdev-formats.rst
> index d2a6cd2e1eb2..2a94371448dc 100644
> --- a/Documentation/userspace-api/media/v4l/subdev-formats.rst
> +++ b/Documentation/userspace-api/media/v4l/subdev-formats.rst
> @@ -2225,7 +2225,7 @@ The following table list existing packed 48bit wide RGB formats.
> \endgroup
>
> On LVDS buses, usually each sample is transferred serialized in seven
> -time slots per pixel clock, on three (18-bit) or four (24-bit)
> +time slots per pixel clock, on three (18-bit) or four (24-bit) or five (30-bit)
> differential data pairs at the same time. The remaining bits are used
> for control signals as defined by SPWG/PSWG/VESA or JEIDA standards. The
> 24-bit RGB format serialized in seven time slots on four lanes using
> @@ -2246,11 +2246,12 @@ JEIDA defined bit mapping will be named
> - Code
> -
> -
> - - :cspan:`3` Data organization
> + - :cspan:`4` Data organization
> * -
> -
> - Timeslot
> - Lane
> + - 4
> - 3
> - 2
> - 1
> @@ -2262,6 +2263,7 @@ JEIDA defined bit mapping will be named
> - 0
> -
> -
> + -
> - d
> - b\ :sub:`1`
> - g\ :sub:`0`
> @@ -2270,6 +2272,7 @@ JEIDA defined bit mapping will be named
> - 1
> -
> -
> + -
> - d
> - b\ :sub:`0`
> - r\ :sub:`5`
> @@ -2278,6 +2281,7 @@ JEIDA defined bit mapping will be named
> - 2
> -
> -
> + -
> - d
> - g\ :sub:`5`
> - r\ :sub:`4`
> @@ -2286,6 +2290,7 @@ JEIDA defined bit mapping will be named
> - 3
> -
> -
> + -
> - b\ :sub:`5`
> - g\ :sub:`4`
> - r\ :sub:`3`
> @@ -2294,6 +2299,7 @@ JEIDA defined bit mapping will be named
> - 4
> -
> -
> + -
> - b\ :sub:`4`
> - g\ :sub:`3`
> - r\ :sub:`2`
> @@ -2302,6 +2308,7 @@ JEIDA defined bit mapping will be named
> - 5
> -
> -
> + -
> - b\ :sub:`3`
> - g\ :sub:`2`
> - r\ :sub:`1`
> @@ -2310,6 +2317,7 @@ JEIDA defined bit mapping will be named
> - 6
> -
> -
> + -
> - b\ :sub:`2`
> - g\ :sub:`1`
> - r\ :sub:`0`
> @@ -2319,6 +2327,7 @@ JEIDA defined bit mapping will be named
> - 0x1011
> - 0
> -
> + -
> - d
> - d
> - b\ :sub:`1`
> @@ -2327,6 +2336,7 @@ JEIDA defined bit mapping will be named
> -
> - 1
> -
> + -
> - b\ :sub:`7`
> - d
> - b\ :sub:`0`
> @@ -2335,6 +2345,7 @@ JEIDA defined bit mapping will be named
> -
> - 2
> -
> + -
> - b\ :sub:`6`
> - d
> - g\ :sub:`5`
> @@ -2343,6 +2354,7 @@ JEIDA defined bit mapping will be named
> -
> - 3
> -
> + -
> - g\ :sub:`7`
> - b\ :sub:`5`
> - g\ :sub:`4`
> @@ -2351,6 +2363,7 @@ JEIDA defined bit mapping will be named
> -
> - 4
> -
> + -
> - g\ :sub:`6`
> - b\ :sub:`4`
> - g\ :sub:`3`
> @@ -2359,6 +2372,7 @@ JEIDA defined bit mapping will be named
> -
> - 5
> -
> + -
> - r\ :sub:`7`
> - b\ :sub:`3`
> - g\ :sub:`2`
> @@ -2367,6 +2381,7 @@ JEIDA defined bit mapping will be named
> -
> - 6
> -
> + -
> - r\ :sub:`6`
> - b\ :sub:`2`
> - g\ :sub:`1`
> @@ -2377,6 +2392,7 @@ JEIDA defined bit mapping will be named
> - 0x1012
> - 0
> -
> + -
> - d
> - d
> - b\ :sub:`3`
> @@ -2385,6 +2401,7 @@ JEIDA defined bit mapping will be named
> -
> - 1
> -
> + -
> - b\ :sub:`1`
> - d
> - b\ :sub:`2`
> @@ -2393,6 +2410,7 @@ JEIDA defined bit mapping will be named
> -
> - 2
> -
> + -
> - b\ :sub:`0`
> - d
> - g\ :sub:`7`
> @@ -2401,6 +2419,7 @@ JEIDA defined bit mapping will be named
> -
> - 3
> -
> + -
> - g\ :sub:`1`
> - b\ :sub:`7`
> - g\ :sub:`6`
> @@ -2409,6 +2428,7 @@ JEIDA defined bit mapping will be named
> -
> - 4
> -
> + -
> - g\ :sub:`0`
> - b\ :sub:`6`
> - g\ :sub:`5`
> @@ -2417,6 +2437,7 @@ JEIDA defined bit mapping will be named
> -
> - 5
> -
> + -
> - r\ :sub:`1`
> - b\ :sub:`5`
> - g\ :sub:`4`
> @@ -2425,10 +2446,141 @@ JEIDA defined bit mapping will be named
> -
> - 6
> -
> + -
> + - r\ :sub:`0`
> + - b\ :sub:`4`
> + - g\ :sub:`3`
> + - r\ :sub:`2`
> + * .. _MEDIA-BUS-FMT-RGB101010-1X7X5-SPWG:
> +
> + - MEDIA_BUS_FMT_RGB101010_1X7X5_SPWG
> + - 0x1026
> + - 0
> + -
> + - d
> + - d
> + - d
> + - b\ :sub:`1`
> + - g\ :sub:`0`
> + * -
> + -
> + - 1
> + -
> + - b\ :sub:`9`
> + - b\ :sub:`7`
> + - d
> + - b\ :sub:`0`
> + - r\ :sub:`5`
> + * -
> + -
> + - 2
> + -
> + - b\ :sub:`8`
> + - b\ :sub:`6`
> + - d
> + - g\ :sub:`5`
> + - r\ :sub:`4`
> + * -
> + -
> + - 3
> + -
> + - g\ :sub:`9`
> + - g\ :sub:`7`
> + - b\ :sub:`5`
> + - g\ :sub:`4`
> + - r\ :sub:`3`
> + * -
> + -
> + - 4
> + -
> + - g\ :sub:`8`
> + - g\ :sub:`6`
> + - b\ :sub:`4`
> + - g\ :sub:`3`
> + - r\ :sub:`2`
> + * -
> + -
> + - 5
> + -
> + - r\ :sub:`9`
> + - r\ :sub:`7`
> + - b\ :sub:`3`
> + - g\ :sub:`2`
> + - r\ :sub:`1`
> + * -
> + -
> + - 6
> + -
> + - r\ :sub:`8`
> + - r\ :sub:`6`
> + - b\ :sub:`2`
> + - g\ :sub:`1`
> - r\ :sub:`0`
> + * .. _MEDIA-BUS-FMT-RGB101010-1X7X5-JEIDA:
> +
> + - MEDIA_BUS_FMT_RGB101010_1X7X5_JEIDA
> + - 0x1027
> + - 0
> + -
> + - d
> + - d
> + - d
> + - b\ :sub:`5`
> + - g\ :sub:`4`
> + * -
> + -
> + - 1
> + -
> + - b\ :sub:`1`
> + - b\ :sub:`3`
> + - d
> - b\ :sub:`4`
> + - r\ :sub:`9`
> + * -
> + -
> + - 2
> + -
> + - b\ :sub:`0`
> + - b\ :sub:`2`
> + - d
> + - g\ :sub:`9`
> + - r\ :sub:`8`
> + * -
> + -
> + - 3
> + -
> + - g\ :sub:`1`
> - g\ :sub:`3`
> + - b\ :sub:`9`
> + - g\ :sub:`8`
> + - r\ :sub:`7`
> + * -
> + -
> + - 4
> + -
> + - g\ :sub:`0`
> + - g\ :sub:`2`
> + - b\ :sub:`8`
> + - g\ :sub:`7`
> + - r\ :sub:`6`
> + * -
> + -
> + - 5
> + -
> + - r\ :sub:`1`
> + - r\ :sub:`3`
> + - b\ :sub:`7`
> + - g\ :sub:`6`
> + - r\ :sub:`5`
> + * -
> + -
> + - 6
> + -
> + - r\ :sub:`0`
> - r\ :sub:`2`
> + - b\ :sub:`6`
> + - g\ :sub:`5`
> + - r\ :sub:`4`
>
> .. raw:: latex
>
> diff --git a/include/uapi/linux/media-bus-format.h b/include/uapi/linux/media-bus-format.h
> index d4c1d991014b..ff62056feed5 100644
> --- a/include/uapi/linux/media-bus-format.h
> +++ b/include/uapi/linux/media-bus-format.h
> @@ -34,7 +34,7 @@
>
> #define MEDIA_BUS_FMT_FIXED 0x0001
>
> -/* RGB - next is 0x1026 */
> +/* RGB - next is 0x1028 */
> #define MEDIA_BUS_FMT_RGB444_1X12 0x1016
> #define MEDIA_BUS_FMT_RGB444_2X8_PADHI_BE 0x1001
> #define MEDIA_BUS_FMT_RGB444_2X8_PADHI_LE 0x1002
> @@ -68,6 +68,8 @@
> #define MEDIA_BUS_FMT_ARGB8888_1X32 0x100d
> #define MEDIA_BUS_FMT_RGB888_1X32_PADHI 0x100f
> #define MEDIA_BUS_FMT_RGB101010_1X30 0x1018
> +#define MEDIA_BUS_FMT_RGB101010_1X7X5_SPWG 0x1026
> +#define MEDIA_BUS_FMT_RGB101010_1X7X5_JEIDA 0x1027
> #define MEDIA_BUS_FMT_RGB666_1X36_CPADLO 0x1020
> #define MEDIA_BUS_FMT_RGB888_1X36_CPADLO 0x1021
> #define MEDIA_BUS_FMT_RGB121212_1X36 0x1019
> --
> 2.34.1
>
--
With best wishes
Dmitry
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