Hello,
Various pieces of information about DRM formats (number of planes, color
depth, chroma subsampling, ...) are scattered across different helper
functions in the DRM core. Callers of those functions often need to access
more than a single parameter of the format, leading to inefficiencies due to
multiple lookups.
This patch series addresses this issue by centralizing all format information
in a single data structure (1/4). It reimplements the existing format helper
functions based on that structure (3/4) and converts the DRM core code to use
the new structure (4/4). Two unused format helper functions are removed in the
process (2/4).
The new API is also useful for drivers. I will shortly post a patch series for
the omapdrm driver that makes use of it.
Laurent Pinchart (4):
drm: Centralize format information
drm: Remove unused drm_format_plane_(width|height) helpers
drm: Implement the drm_format_*() helpers as drm_format_info()
wrappers
drm: Use drm_format_info() in DRM core code
drivers/gpu/drm/drm_crtc.c | 391 +++++++++++-------------------------
drivers/gpu/drm/drm_fb_cma_helper.c | 23 ++-
include/drm/drm_crtc.h | 23 ++-
3 files changed, 153 insertions(+), 284 deletions(-)
--
Regards,
Laurent Pinchart
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