Hi, DRM comes with an extensive format support to retrieve the various parameters associated with a given format (such as the subsampling, or the bits per pixel), as well as some helpers and utilities to ease the driver development. v4l2, on the other side, doesn't provide such facilities, leaving each driver reimplement a subset of the formats parameters for the one supported by that particular driver. This leads to a lot of duplication and boilerplate code in the v4l2 drivers. This series tries to address this by moving the DRM format API into lib and turning it into a more generic API. In order to do this, we've needed to do some preliminary changes on the DRM drivers, then moved the API and finally converted a v4l2 driver to give an example of how such library could be used. Let me know what you think, Maxime Maxime Ripard (20): drm: Remove users of drm_format_num_planes drm: Remove users of drm_format_(horz|vert)_chroma_subsampling drm/fourcc: Pass the format_info pointer to drm_format_plane_cpp drm/fourcc: Pass the format_info pointer to drm_format_plane_width/height drm: Replace instances of drm_format_info by drm_get_format_info lib: Add video format information library drm/fb: Move from drm_format_info to image_format_info drm/malidp: Convert to generic image format library drm/client: Convert to generic image format library drm/exynos: Convert to generic image format library drm/i915: Convert to generic image format library drm/ipuv3: Convert to generic image format library drm/msm: Convert to generic image format library drm/omap: Convert to generic image format library drm/rockchip: Convert to generic image format library drm/tegra: Convert to generic image format library drm/fourcc: Remove old DRM format API lib: image-formats: Add v4l2 formats support lib: image-formats: Add more functions media: sun6i: Convert to the image format API drivers/gpu/drm/Kconfig | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c | 4 +- drivers/gpu/drm/arm/malidp_drv.c | 5 +- drivers/gpu/drm/arm/malidp_hw.c | 4 +- drivers/gpu/drm/arm/malidp_mw.c | 2 +- drivers/gpu/drm/arm/malidp_planes.c | 8 +- drivers/gpu/drm/armada/armada_fb.c | 3 +- drivers/gpu/drm/armada/armada_overlay.c | 3 +- drivers/gpu/drm/armada/armada_plane.c | 3 +- drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c | 13 +- drivers/gpu/drm/bochs/bochs.h | 4 +- drivers/gpu/drm/bochs/bochs_hw.c | 3 +- drivers/gpu/drm/cirrus/cirrus_fbdev.c | 4 +- drivers/gpu/drm/cirrus/cirrus_main.c | 4 +- drivers/gpu/drm/drm_atomic.c | 1 +- drivers/gpu/drm/drm_client.c | 8 +- drivers/gpu/drm/drm_crtc.c | 1 +- drivers/gpu/drm/drm_fb_cma_helper.c | 5 +- drivers/gpu/drm/drm_fb_helper.c | 15 +- drivers/gpu/drm/drm_fourcc.c | 318 +----- drivers/gpu/drm/drm_framebuffer.c | 11 +- drivers/gpu/drm/drm_gem_framebuffer_helper.c | 5 +- drivers/gpu/drm/drm_plane.c | 1 +- drivers/gpu/drm/exynos/exynos_drm_fb.c | 3 +- drivers/gpu/drm/exynos/exynos_drm_ipp.c | 2 +- drivers/gpu/drm/exynos/exynos_drm_ipp.h | 4 +- drivers/gpu/drm/exynos/exynos_drm_scaler.c | 3 +- drivers/gpu/drm/gma500/framebuffer.c | 4 +- drivers/gpu/drm/i915/i915_drv.h | 6 +- drivers/gpu/drm/i915/intel_display.c | 15 +- drivers/gpu/drm/i915/intel_sprite.c | 3 +- drivers/gpu/drm/imx/ipuv3-plane.c | 20 +- drivers/gpu/drm/mediatek/mtk_drm_fb.c | 8 +- drivers/gpu/drm/meson/meson_overlay.c | 14 +- drivers/gpu/drm/msm/disp/dpu1/dpu_formats.c | 11 +- drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c | 10 +- drivers/gpu/drm/msm/disp/mdp5/mdp5_crtc.c | 4 +- drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c | 25 +- drivers/gpu/drm/msm/disp/mdp5/mdp5_smp.c | 8 +- drivers/gpu/drm/msm/msm_fb.c | 18 +- drivers/gpu/drm/omapdrm/dss/dispc.c | 9 +- drivers/gpu/drm/omapdrm/omap_fb.c | 15 +- drivers/gpu/drm/radeon/radeon_fb.c | 4 +- drivers/gpu/drm/rockchip/rockchip_drm_fb.c | 17 +- drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 14 +- drivers/gpu/drm/selftests/Makefile | 3 +- drivers/gpu/drm/selftests/drm_modeset_selftests.h | 3 +- drivers/gpu/drm/selftests/test-drm_format.c | 280 +---- drivers/gpu/drm/selftests/test-drm_modeset_common.h | 3 +- drivers/gpu/drm/stm/ltdc.c | 2 +- drivers/gpu/drm/sun4i/sun4i_backend.c | 7 +- drivers/gpu/drm/sun4i/sun4i_frontend.c | 19 +- drivers/gpu/drm/sun4i/sun8i_ui_layer.c | 2 +- drivers/gpu/drm/sun4i/sun8i_vi_layer.c | 6 +- drivers/gpu/drm/sun4i/sun8i_vi_scaler.c | 6 +- drivers/gpu/drm/sun4i/sun8i_vi_scaler.h | 5 +- drivers/gpu/drm/tegra/fb.c | 14 +- drivers/gpu/drm/tegra/plane.c | 4 +- drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c | 2 +- drivers/gpu/drm/vc4/vc4_plane.c | 15 +- drivers/gpu/drm/zte/zx_plane.c | 6 +- drivers/gpu/ipu-v3/ipu-pre.c | 3 +- drivers/gpu/ipu-v3/ipu-prg.c | 3 +- drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c | 88 +- drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h | 46 +- include/drm/drm_fourcc.h | 219 +--- include/drm/drm_framebuffer.h | 3 +- include/drm/drm_mode_config.h | 4 +- include/linux/image-formats.h | 253 ++++- lib/Kconfig | 7 +- lib/Makefile | 3 +- lib/image-formats-selftests.c | 326 +++++- lib/image-formats.c | 869 +++++++++++++- 73 files changed, 1719 insertions(+), 1126 deletions(-) delete mode 100644 drivers/gpu/drm/selftests/test-drm_format.c create mode 100644 include/linux/image-formats.h create mode 100644 lib/image-formats-selftests.c create mode 100644 lib/image-formats.c base-commit: 98f41dc3b3eeabfc80d5d5eb1c1a6294ff59b4ec -- git-series 0.9.1
