[igt-dev] [PATCH i-g-t v3 0/2] add support for passing yuv writeback output format

[Abhinav Kumar]

MSM display pipeline has support for writeback to handle YUV formats.
Currently the kms_writeback supports hard-codes the writeback output
format to DRM_FORMAT_XRGB8888. This series makes the necessary changes
in the lib and kms_writeback to allow passing DRM YUV formats to
kms_writeback.

The default kms_writeback shall still use only DRM_FORMAT_XRGB8888.

Additional formats can be passed using the command line.

Sample usage of this would be:

./kms_writeback -d -f <name of the DRM YUV fmt from igt_fb>

Currently this is supported only along with the --dump option because
the API which computes CRC needs to be extended to handle formats
which have more than one plane.

changes in v2:
	- removed an unnecessary new line
	- fixed petri's email address

changes in v3:
	- drop the changes to igt_fb_get_fnv1a_crc()
	- restrict the custom format to only the --dump option

Abhinav Kumar (2):
  lib/igt_fb: add a helper to find drm_id from matching string
  tests/kms_writeback: allow writeback to output custom format

 lib/igt_fb.c          | 28 ++++++++++++++++++++++++++++
 lib/igt_fb.h          |  3 +++
 tests/kms_writeback.c | 18 +++++++++++++++---
 3 files changed, 46 insertions(+), 3 deletions(-)

-- 
2.40.1