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(-)