Re: [PATCH v6 01/14] media: uapi: Add some RGB bus formats for i.MX8qm/qxp pixel combiner

2021-03-23 Thread Marcel Ziswiler
On Wed, 2021-03-17 at 11:42 +0800, Liu Ying wrote:
> This patch adds RGB666_1X30_CPADLO, RGB888_1X30_CPADLO, RGB666_1X36_CPADLO
> and RGB888_1X36_CPADLO bus formats used by i.MX8qm/qxp pixel combiner.
> The RGB pixels with padding low per component are transmitted on a 30-bit
> input bus(10-bit per component) from a display controller or a 36-bit
> output bus(12-bit per component) to a pixel link.
> 
> Reviewed-by: Robert Foss 
> Reviewed-by: Laurent Pinchart 
> 
> Signed-off-by: Liu Ying 
> ---
> v5->v6:
> * Add Laurent's R-b tag.
> 
> v4->v5:
> * Add Robert's R-b tag.
> 
> v3->v4:
> * No change.
> 
> v2->v3:
> * No change.
> 
> v1->v2:
> * No change.
> 
>  include/uapi/linux/media-bus-format.h | 6 +-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/include/uapi/linux/media-bus-format.h 
> b/include/uapi/linux/media-bus-format.h
> index 0dfc11e..ec3323d 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_FIXED0x0001
>  
> -/* RGB - next is   0x101e */
> +/* RGB - next is   0x1022 */
>  #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
> @@ -59,9 +59,13 @@
>  #define MEDIA_BUS_FMT_RGB888_3X8_DELTA 0x101d
>  #define MEDIA_BUS_FMT_RGB888_1X7X4_SPWG0x1011
>  #define MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA   0x1012
> +#define MEDIA_BUS_FMT_RGB666_1X30_CPADLO   0x101e
> +#define MEDIA_BUS_FMT_RGB888_1X30_CPADLO   0x101f
>  #define MEDIA_BUS_FMT_ARGB_1X320x100d
>  #define MEDIA_BUS_FMT_RGB888_1X32_PADHI0x100f
>  #define MEDIA_BUS_FMT_RGB101010_1X30   0x1018
> +#define MEDIA_BUS_FMT_RGB666_1X36_CPADLO   0x1020
> +#define MEDIA_BUS_FMT_RGB888_1X36_CPADLO   0x1021
>  #define MEDIA_BUS_FMT_RGB121212_1X36   0x1019
>  #define MEDIA_BUS_FMT_RGB161616_1X48   0x101a

I haven't figured out what exactly the idea of this strange ordering of things 
is about? Could you enlighten
me?
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Re: [PATCH v6 01/14] media: uapi: Add some RGB bus formats for i.MX8qm/qxp pixel combiner

2021-03-22 Thread Liu Ying
Hi Marcel,

On Tue, 2021-03-23 at 00:23 +, Marcel Ziswiler wrote:
> On Wed, 2021-03-17 at 11:42 +0800, Liu Ying wrote:
> > This patch adds RGB666_1X30_CPADLO, RGB888_1X30_CPADLO, RGB666_1X36_CPADLO
> > and RGB888_1X36_CPADLO bus formats used by i.MX8qm/qxp pixel combiner.
> > The RGB pixels with padding low per component are transmitted on a 30-bit
> > input bus(10-bit per component) from a display controller or a 36-bit
> > output bus(12-bit per component) to a pixel link.
> > 
> > Reviewed-by: Robert Foss 
> > 
> > Reviewed-by: Laurent Pinchart 
> > 
> > Signed-off-by: Liu Ying 
> > ---
> > v5->v6:
> > * Add Laurent's R-b tag.
> > 
> > v4->v5:
> > * Add Robert's R-b tag.
> > 
> > v3->v4:
> > * No change.
> > 
> > v2->v3:
> > * No change.
> > 
> > v1->v2:
> > * No change.
> > 
> >  include/uapi/linux/media-bus-format.h | 6 +-
> >  1 file changed, 5 insertions(+), 1 deletion(-)
> > 
> > diff --git a/include/uapi/linux/media-bus-format.h 
> > b/include/uapi/linux/media-bus-format.h
> > index 0dfc11e..ec3323d 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_FIXED0x0001
> >  
> > -/* RGB - next is   0x101e */
> > +/* RGB - next is   0x1022 */
> >  #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
> > @@ -59,9 +59,13 @@
> >  #define MEDIA_BUS_FMT_RGB888_3X8_DELTA 0x101d
> >  #define MEDIA_BUS_FMT_RGB888_1X7X4_SPWG0x1011
> >  #define MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA   0x1012
> > +#define MEDIA_BUS_FMT_RGB666_1X30_CPADLO   0x101e
> > +#define MEDIA_BUS_FMT_RGB888_1X30_CPADLO   0x101f
> >  #define MEDIA_BUS_FMT_ARGB_1X320x100d
> >  #define MEDIA_BUS_FMT_RGB888_1X32_PADHI0x100f
> >  #define MEDIA_BUS_FMT_RGB101010_1X30   0x1018
> > +#define MEDIA_BUS_FMT_RGB666_1X36_CPADLO   0x1020
> > +#define MEDIA_BUS_FMT_RGB888_1X36_CPADLO   0x1021
> >  #define MEDIA_BUS_FMT_RGB121212_1X36   0x1019
> >  #define MEDIA_BUS_FMT_RGB161616_1X48   0x101a
> 
> I haven't figured out what exactly the idea of this strange ordering of 
> things is about? Could you enlighten
> me?

The existing comment in this header file mentions 'The bus formats are
grouped by type, bus_width, bits per component, samples per pixel and
order of subsamples. Numerical values are sorted using
generic numerical sort order (8 thus comes before 10).'

So, the way I read the ordering is that fomarts are first grouped as
'type', like 'RGB', 'YUV'  and 'Bayer', then sorted by 'bus_width',
like '2x8', '1x30' and '1x36', then sorted by 'bits per component',
like 'RGB666', 'RGB888' and 'RGB121212'.

It looks like 'samples per pixel' and 'order of subsamples' are 'YUV'
type relevant.

HTH,
Liu Ying 


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[PATCH v6 01/14] media: uapi: Add some RGB bus formats for i.MX8qm/qxp pixel combiner

2021-03-16 Thread Liu Ying
This patch adds RGB666_1X30_CPADLO, RGB888_1X30_CPADLO, RGB666_1X36_CPADLO
and RGB888_1X36_CPADLO bus formats used by i.MX8qm/qxp pixel combiner.
The RGB pixels with padding low per component are transmitted on a 30-bit
input bus(10-bit per component) from a display controller or a 36-bit
output bus(12-bit per component) to a pixel link.

Reviewed-by: Robert Foss 
Reviewed-by: Laurent Pinchart 
Signed-off-by: Liu Ying 
---
v5->v6:
* Add Laurent's R-b tag.

v4->v5:
* Add Robert's R-b tag.

v3->v4:
* No change.

v2->v3:
* No change.

v1->v2:
* No change.

 include/uapi/linux/media-bus-format.h | 6 +-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/uapi/linux/media-bus-format.h 
b/include/uapi/linux/media-bus-format.h
index 0dfc11e..ec3323d 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_FIXED0x0001
 
-/* RGB - next is   0x101e */
+/* RGB - next is   0x1022 */
 #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
@@ -59,9 +59,13 @@
 #define MEDIA_BUS_FMT_RGB888_3X8_DELTA 0x101d
 #define MEDIA_BUS_FMT_RGB888_1X7X4_SPWG0x1011
 #define MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA   0x1012
+#define MEDIA_BUS_FMT_RGB666_1X30_CPADLO   0x101e
+#define MEDIA_BUS_FMT_RGB888_1X30_CPADLO   0x101f
 #define MEDIA_BUS_FMT_ARGB_1X320x100d
 #define MEDIA_BUS_FMT_RGB888_1X32_PADHI0x100f
 #define MEDIA_BUS_FMT_RGB101010_1X30   0x1018
+#define MEDIA_BUS_FMT_RGB666_1X36_CPADLO   0x1020
+#define MEDIA_BUS_FMT_RGB888_1X36_CPADLO   0x1021
 #define MEDIA_BUS_FMT_RGB121212_1X36   0x1019
 #define MEDIA_BUS_FMT_RGB161616_1X48   0x101a
 
-- 
2.7.4

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