[PATCH v2] drm/fourcc: Add bayer formats and modifiers

[Emil Velikov]

Hi Niklas,

On Fri, 22 May 2020 at 07:56, Niklas Söderlund
<niklas.soderlund at ragnatech.se> wrote:
>
> Bayer formats are used with cameras and contain green, red and blue
> components, with alternating lines of red and green, and blue and green
> pixels in different orders. For each block of 2x2 pixels there is one
> pixel with a red filter, two with a green filter, and one with a blue
> filter. The filters can be arranged in different patterns.
>
> Add DRM fourcc formats to describe the most common Bayer formats. Also
> add a modifiers to describe the custom packing layouts used by the Intel
> IPU3 and in the MIPI (Mobile Industry Processor Interface) CSI-2
> specification.
>
> Signed-off-by: Niklas Söderlund <niklas.soderlund at ragnatech.se>
> ---
> * Changes since v1
> - Rename the defines from DRM_FORMAT_SRGGB8 to DRM_FORMAT_BAYER_RGGB8.
> - Update the fourcc codes passed to fourcc_code() to avoid a conflict.
> - Add diagrams for all Bayer formats memory layout.
> - Update documentation.
> ---
>  include/uapi/drm/drm_fourcc.h | 205 ++++++++++++++++++++++++++++++++++
>  1 file changed, 205 insertions(+)
>
Where is the user for these new formats - be that kernel or userspace?
Did you forget to update the __drm_format_info() in
drivers/gpu/drm/drm_fourcc.c?

-Emil