user/sven/linux.git/drivers/gpu/drm/drm_rect.c, branch v4.4.123

drm: Use DRM_ROTATE_MASK and DRM_REFLECT_MASK

2015-10-05T13:32:51Z

Avoid magic numbers and use the introduced defines. Cc: Ville Syrjälä Signed-off-by: Joonas Lahtinen Reviewed-by: Ville Syrjälä Signed-off-by: Daniel Vetter

drm: Add drm_rect rotation functions

2014-07-11T21:44:12Z

Add some helper functions to move drm_rects between different rotated coordinate spaces. One function does the forward transform and another does the inverse. Cc: dri-devel@lists.freedesktop.org Signed-off-by: Ville Syrjälä Reviewed-by: Imre Deak Acked-by: Dave Airlie Signed-off-by: Daniel Vetter

drm: Add drm_rect_debug_print()

2013-04-30T20:20:00Z

Add a debug function to print the rectangle in a human readable format. v2: Renamed drm_region to drm_rect, the function from drm_region_debug to drm_rect_debug_print(), and use %+d instead of +%d in the format. v3: Use %d format for width/height in the non fixed point case as well Reviewed-by: Chris Wilson Signed-off-by: Ville Syrjälä Acked-by: Dave Airlie Signed-off-by: Daniel Vetter

drm: Add drm_rect_calc_{hscale, vscale}() utility functions

2013-04-30T20:19:39Z

These functions calculate the scaling factor based on the source and destination rectangles. There are two version of the functions, the strict ones that will return an error if the min/max scaling factor is exceeded, and the relaxed versions that will adjust the src/dst rectangles in order to keep the scaling factor withing the limits. v2: Return error instead of adjusting regions, refactor common parts into one function, and split into strict and relaxed versions. v3: Renamed drm_region to drm_rect, add "_rect_" to the function names. v4: Fix "calculcate" typos Reviewed-by: Chris Wilson Signed-off-by: Ville Syrjälä Acked-by: Dave Airlie Signed-off-by: Daniel Vetter

drm: Add struct drm_rect and assorted utility functions

2013-04-30T20:19:08Z

struct drm_rect represents a simple rectangle. The utility functions are there to help driver writers. v2: Moved the region stuff into its own file, made the smaller funcs static inline, used 64bit maths in the scaled clipping function to avoid overflows (instead it will saturate to INT_MIN or INT_MAX). v3: Renamed drm_region to drm_rect, drm_region_clip to drm_rect_intersect, and drm_region_subsample to drm_rect_downscale. v4: Renamed some function parameters, improve kernel-doc comments a bit, and actually generate documentation for drm_rect.[ch]. v5: s/RETUTRNS/RETURNS/ Reviewed-by: Laurent Pinchart Reviewed-by: Chris Wilson Signed-off-by: Ville Syrjälä Acked-by: Dave Airlie Signed-off-by: Daniel Vetter