drm: Extend framebuffer_check to handle formats with cpp/char_per_block 0

For formats that are supported only with non-linear modifiers it
doesn't make to much sense to define cpp or char_per_block, so that
will be set to 0.

This patch adds a restriction to force having a modifier attached when
cpp/char_per_block is 0, and to bypass checking the pitch restriction.

This had been discussed here.
[1] https://people.freedesktop.org/~cbrill/dri-log/?channel=dri-devel&highlight_names=&date=2018-09-13&show_html=true

Reviewed-by: Brian Starkey <[email protected]>
Reviewed-by: Daniel Vetter <[email protected]>
Signed-off-by: Alexandru Gheorghe <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

0 files changed, 0 insertions, 0 deletions