Hi Manjunath, On Tuesday 17 July 2012 12:22:42 Hadli, Manjunath wrote: > On Tue, Jul 17, 2012 at 17:25:42, Laurent Pinchart wrote: > > On Tuesday 17 July 2012 11:41:11 Hadli, Manjunath wrote: > > > On Tue, Jul 17, 2012 at 16:26:24, Laurent Pinchart wrote: > > > > On Friday 30 March 2012 10:09:13 Hadli, Manjunath wrote: > > > > > add new enum entries for supporting the media-bus formats on dm365. > > > > > These include some bayer and some non-bayer formats. > > > > > V4L2_MBUS_FMT_YDYC8_1X16 and V4L2_MBUS_FMT_UV8_1X8 are used > > > > > internal to the hardware by the resizer. > > > > > V4L2_MBUS_FMT_SBGGR10_ALAW8_1X8 represents the bayer ALAW format > > > > > that is supported by dm365 hardware. > > > > > > > > > > Signed-off-by: Manjunath Hadli <manjunath.ha...@ti.com> > > > > > Cc: Laurent Pinchart <laurent.pinch...@ideasonboard.com> > > > > > Cc: Sakari Ailus <sakari.ai...@iki.fi> > > > > > Cc: Hans Verkuil <hans.verk...@cisco.com> > > > > > --- > > > > > > > > > > Documentation/DocBook/media/v4l/subdev-formats.xml | 171 > > > > > ++++++++++++ > > > > > include/linux/v4l2-mediabus.h | 10 +- > > > > > 2 files changed, 179 insertions(+), 2 deletions(-) > > > > > > > > > > diff --git a/Documentation/DocBook/media/v4l/subdev-formats.xml > > > > > b/Documentation/DocBook/media/v4l/subdev-formats.xml index > > > > > 49c532e..48d92bb > > > > > 100644 > > > > > --- a/Documentation/DocBook/media/v4l/subdev-formats.xml > > > > > +++ b/Documentation/DocBook/media/v4l/subdev-formats.xml > > > > [snip] > > > > > > > @@ -965,6 +1036,56 @@ > > > > > > > > > > <entry>y<subscript>1</subscript></entry> > > > > > <entry>y<subscript>0</subscript></entry> > > > > > > > > > > </row> > > > > > > > > > > + <row id="V4L2-MBUS-FMT-UV8-1X8"> > > > > > > > > That's a weird one. Just out of curiosity, what's the point of > > > > transferring chroma information without luma ? > > > > > > DM365 supports this format. > > > > Right, but what is it used for ? > > Sorry about that. The Resizer in Dm365 can take only chroma and resize the > buffer. It can also take luma of course. In general it can take UV8, Y8 and > also UYVY.
So UV8 is used to resize an NV buffer in two passes (first Y8 then UV8) ? > > [snip] > > > > > > > @@ -2415,6 +2536,56 @@ > > > > > > > > > > <entry>u<subscript>1</subscript></entry> > > > > > <entry>u<subscript>0</subscript></entry> > > > > > > > > > > </row> > > > > > > > > > > + <row id="V4L2-MBUS-FMT-YDYC8-1X16"> > > > > > > > > What is this beast ? We at least need a textual description, as I have > > > > no > > > > idea what the format corresponds to. > > > > > > This was discussed earlier over here > > > http://patchwork.linuxtv.org/patch/8843/ > > > > My bad, I should have remembered that. Please add a textual description of > > the format, it's not clear from the name what D and C are. > > I see no description for individual MBUS formats but a collective para on > everything together. Would you like me to add in the same or otherwise can > you point to me where I can add this description? What about the following patch ? Note that I've renamed YDYC to YDYU, as we might later need a YDYV format. (Hans, Sakari, any opinion ?) diff --git a/Documentation/DocBook/media/v4l/subdev-formats.xml b/Documentation/DocBook/media/v4l/subdev-formats.xml index 49c532e..47a485e 100644 --- a/Documentation/DocBook/media/v4l/subdev-formats.xml +++ b/Documentation/DocBook/media/v4l/subdev-formats.xml @@ -853,10 +853,15 @@ <title>Packed YUV Formats</title> <para>Those data formats transfer pixel data as (possibly downsampled) Y, U - and V components. The format code is made of the following information. + and V components. Some formats include dummy bits in some of their samples + and are collectively referred to as "YDYC" (Y-Dummy-Y-Chroma) formats. + </para> + + <para>The format code is made of the following information. <itemizedlist> <listitem><para>The Y, U and V components order code, as transferred on the - bus. Possible values are YUYV, UYVY, YVYU and VYUY.</para></listitem> + bus. Possible values are YUYV, UYVY, YVYU and VYUY for formats with no + dummy bit, and YDYU, YDYV, YUYD and YVYD for YDYC formats.</para></listitem> <listitem><para>The number of bits per pixel component. All components are transferred on the same number of bits. Common values are 8, 10 and 12.</para> </listitem> @@ -877,7 +882,21 @@ U, Y, V, Y order will be named <constant>V4L2_MBUS_FMT_UYVY8_2X8</constant>. </para> - <para>The following table lisst existing packet YUV formats.</para> + <para><xref linkend="v4l2-mbus-pixelcode-yuv8"/> list existing packet YUV + formats and describes the organization of each pixel data in each sample. + When a format pattern is split across multiple samples each of the samples + in the pattern is described.</para> + + <para>The role of each bit transferred over the bus is identified by one + of the following codes.</para> + + <itemizedlist> + <listitem><para>y<subscript>x</subscript> for luma component bit number x</para></listitem> + <listitem><para>u<subscript>x</subscript> for blue chroma component bit number x</para></listitem> + <listitem><para>v<subscript>x</subscript> for red chroma component bit number x</para></listitem> + <listitem><para>- for non-available bits (for positions higher than the bus width)</para></listitem> + <listitem><para>/ for dummy bits</para></listitem> + </itemizedlist> <table pgwide="0" frame="none" id="v4l2-mbus-pixelcode-yuv8"> <title>YUV Formats</title> @@ -2415,6 +2434,106 @@ <entry>u<subscript>1</subscript></entry> <entry>u<subscript>0</subscript></entry> </row> + <row id="V4L2-MBUS-FMT-YDYU8-1X16"> + <entry>V4L2_MBUS_FMT_YDYU8_1X16</entry> + <entry>0x2014</entry> + <entry></entry> + <entry>-</entry> + <entry>-</entry> + <entry>-</entry> + <entry>-</entry> + <entry>y<subscript>7</subscript></entry> + <entry>y<subscript>6</subscript></entry> + <entry>y<subscript>5</subscript></entry> + <entry>y<subscript>4</subscript></entry> + <entry>y<subscript>3</subscript></entry> + <entry>y<subscript>2</subscript></entry> + <entry>y<subscript>1</subscript></entry> + <entry>y<subscript>0</subscript></entry> + <entry>/</entry> + <entry>/</entry> + <entry>/</entry> + <entry>/</entry> + <entry>/</entry> + <entry>/</entry> + <entry>/</entry> + <entry>/</entry> + </row> + <row> + <entry></entry> + <entry></entry> + <entry></entry> + <entry>-</entry> + <entry>-</entry> + <entry>-</entry> + <entry>-</entry> + <entry>y<subscript>7</subscript></entry> + <entry>y<subscript>6</subscript></entry> + <entry>y<subscript>5</subscript></entry> + <entry>y<subscript>4</subscript></entry> + <entry>y<subscript>3</subscript></entry> + <entry>y<subscript>2</subscript></entry> + <entry>y<subscript>1</subscript></entry> + <entry>y<subscript>0</subscript></entry> + <entry>u<subscript>7</subscript></entry> + <entry>u<subscript>6</subscript></entry> + <entry>u<subscript>5</subscript></entry> + <entry>u<subscript>4</subscript></entry> + <entry>u<subscript>3</subscript></entry> + <entry>u<subscript>2</subscript></entry> + <entry>u<subscript>1</subscript></entry> + <entry>u<subscript>0</subscript></entry> + </row> + <row> + <entry></entry> + <entry></entry> + <entry></entry> + <entry>-</entry> + <entry>-</entry> + <entry>-</entry> + <entry>-</entry> + <entry>y<subscript>7</subscript></entry> + <entry>y<subscript>6</subscript></entry> + <entry>y<subscript>5</subscript></entry> + <entry>y<subscript>4</subscript></entry> + <entry>y<subscript>3</subscript></entry> + <entry>y<subscript>2</subscript></entry> + <entry>y<subscript>1</subscript></entry> + <entry>y<subscript>0</subscript></entry> + <entry>/</entry> + <entry>/</entry> + <entry>/</entry> + <entry>/</entry> + <entry>/</entry> + <entry>/</entry> + <entry>/</entry> + <entry>/</entry> + </row> + <row> + <entry></entry> + <entry></entry> + <entry></entry> + <entry>-</entry> + <entry>-</entry> + <entry>-</entry> + <entry>-</entry> + <entry>y<subscript>7</subscript></entry> + <entry>y<subscript>6</subscript></entry> + <entry>y<subscript>5</subscript></entry> + <entry>y<subscript>4</subscript></entry> + <entry>y<subscript>3</subscript></entry> + <entry>y<subscript>2</subscript></entry> + <entry>y<subscript>1</subscript></entry> + <entry>y<subscript>0</subscript></entry> + <entry>v<subscript>7</subscript></entry> + <entry>v<subscript>6</subscript></entry> + <entry>v<subscript>5</subscript></entry> + <entry>v<subscript>4</subscript></entry> + <entry>v<subscript>3</subscript></entry> + <entry>v<subscript>2</subscript></entry> + <entry>v<subscript>1</subscript></entry> + <entry>v<subscript>0</subscript></entry> + </row> <row id="V4L2-MBUS-FMT-YUYV10-1X20"> <entry>V4L2_MBUS_FMT_YUYV10_1X20</entry> <entry>0x200d</entry> -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
