Change since v1 [1]: - Droped changes that add special handling of the tile formats X0L0/X0L2 in the driver and extend drm_core, by adding tile_h and tile_w in drm_format_info, suggested by Daniel Vetter here [2], see patches 2 to 4. - Use a differnt fourcc code for DRM_FORMAT_XVYU2101010, as suggested by Brian Starkey here [3].
Mali DP supports a bunch of pixel formats that don't have a fourcc code defined in drm_fourcc.h, so this patchset adds the definition for those formats and enables them in mali-dp driver.
The following new formats will be added:
Packed YCbCr444 * DRM_FORMAT_XYUV8888 * DRM_FORMAT_XVYU2101010
Two plane 10 bits format. * DRM_FORMAT_P010
Packed YCbCr420 2x2 tiled formats * DRM_FORMAT_Y0L0 * DRM_FORMAT_X0L0 * DRM_FORMAT_Y0L2 * DRM_FORMAT_X0L2 The difference between X0L0/X0L2 vs Y0L0/Y0L2 is that the later group have two alpha bits per pixel.
This group is a bit special because we are dealing with a tiled format where the first 64 bits in memory represent the pixels for a 2x2 tile, so it needs a bit of special handling when it comes to: - pitch: needs to cover both rows that are in the same tile. - min allocation size: since a pitch cover both rows the formulas defined in drm_gem_fb_create don't work anymore. - handling of src_x and src_y offset: same as above since we are dealing with a tiled format drm_fb_cma_get_gem_obj doesn't return the correct address offset.
[1] https://lists.freedesktop.org/archives/dri-devel/2018-July/184597.html [2] https://lists.freedesktop.org/archives/dri-devel/2018-August/186465.html [3] https://lists.freedesktop.org/archives/dri-devel/2018-August/186057.html
Alexandru Gheorghe (5): drm/fourcc: Add new fourcc for malidp uncompressed formats drm/fourcc: Add tile width and height to drm_format_info drm/i915: Set tile sizes in drm_format_info drm: Add support for handling linear tile formats drm: mali-dp: Enable mali specific buffer formats
drivers/gpu/drm/arm/malidp_hw.c | 7 +- drivers/gpu/drm/drm_atomic.c | 8 + drivers/gpu/drm/drm_fb_cma_helper.c | 11 +- drivers/gpu/drm/drm_fourcc.c | 397 +++++++++++++++---- drivers/gpu/drm/drm_framebuffer.c | 19 +- drivers/gpu/drm/drm_gem_framebuffer_helper.c | 10 +- drivers/gpu/drm/i915/intel_display.c | 12 +- include/drm/drm_fourcc.h | 6 + include/uapi/drm/drm_fourcc.h | 27 +- 9 files changed, 415 insertions(+), 82 deletions(-)