kernel/linux.git/include/drm/drm_format_helper.h, branch v6.6.141

drm/format-helper: Simplify drm_fb_build_fourcc_list()

2023-01-03T13:27:39+00:00

The DRM helper drm_fb_build_fourcc_list() creates a list of color formats for primary planes of the generic drivers. Simplify the helper: - It used to mix and filter native and emulated formats as provided by the driver. Now the only emulated format is XRGB8888, which is required as fallback by legacy software. Drop support for emulating any other formats. - Also convert alpha formats to their non-alpha counterparts. Generic drivers don't support primary planes with alpha formats and some DTs incorrectly advertise alpha channels for non-alpha hardware. So only export non-alpha formats for primary planes. With the simplified helper, scrap format lists of the affected generic drivers. All they need is the firmware buffer's native format, from which the helper creates the list of color formats. Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Link: https://patchwork.freedesktop.org/patch/msgid/20230102112927.26565-13-tzimmermann@suse.de

drm/format-helper: Add conversion from XRGB8888 to 15-bit RGB555 formats

2023-01-03T13:26:05+00:00

Add conversion from XRGB8888 to XRGB1555, ARGB1555 and RGBA5551, which are the formats currently supported by the simplefb infrastructure. The new helpers allow the output of XRGB8888 framebuffers to firmware scanout buffers in one of the 15-bit formats. v3: * use __le* for destination buffers (Jose, kernel test robot) v2: * test 15-bit results with local endianness (Jose) Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Reviewed-by: José Expósito Link: https://patchwork.freedesktop.org/patch/msgid/20230102112927.26565-10-tzimmermann@suse.de

drm/format-helper: Add conversion from XRGB8888 to ARGB2101010

2023-01-03T13:25:41+00:00

Add dedicated helper to convert from XRGB8888 to ARGB2101010. Sets all alpha bits to make pixels fully opaque. v2: * set correct format in struct drm_framebuffer (Javier) * use cpubuf_to_le32() * type fixes Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Reviewed-by: José Expósito Link: https://patchwork.freedesktop.org/patch/msgid/20230102112927.26565-9-tzimmermann@suse.de

drm/format-helper: Add conversion from XRGB8888 to ARGB8888

2023-01-03T13:25:17+00:00

Add dedicated helper to convert from XRGB8888 to ARGB8888. Sets all alpha bits to make pixels fully opaque. v3: * use __le32 for destination buffer (Jose, kernel test robot) v2: * use cpubuf_to_le32() * type fixes Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Reviewed-by: José Expósito Link: https://patchwork.freedesktop.org/patch/msgid/20230102112927.26565-8-tzimmermann@suse.de

drm/format-helper: Add drm_fb_build_fourcc_list() helper

2022-09-12T07:15:49+00:00

Add drm_fb_build_fourcc_list() function that builds a list of supported formats from native and emulated ones. Helpful for all drivers that do format conversion as part of their plane updates. Update current caller. v3: * improve warnings on ignored formats (Sam) v2: * use u32 instead of uint32_t (Sam) * print a warning if output array is too small (Sam) * comment fixes (Sam) Signed-off-by: Thomas Zimmermann Reviewed-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20220905141648.22013-5-tzimmermann@suse.de

drm/format-helper: Rename parameter vmap to src

2022-08-10T07:18:56+00:00

Rename the parameter vmap to src in all functions. The parameter contains the locations of the source data and the new name says that. v3: * fix typo in commit message Signed-off-by: Thomas Zimmermann Reviewed-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20220808125406.20752-15-tzimmermann@suse.de

drm/format-helper: Rework XRGB8888-to-MONO conversion

2022-08-10T07:18:53+00:00

Update XRGB8888-to-MONO conversion to support struct iosys_map and convert all users. Although these are single-plane color formats, the new interface supports multi-plane formats for consistency with drm_fb_blit(). v2: * rebase after renaming CMA helpers to DMA helpers * update documentation (Sam) Signed-off-by: Thomas Zimmermann Tested-by: Noralf Trønnes Reviewed-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20220808125406.20752-13-tzimmermann@suse.de

drm/format-helper: Rework XRGB8888-to-GRAY8 conversion

2022-08-10T07:18:49+00:00

Update XRGB8888-to-GRAY8 conversion to support struct iosys_map and convert all users. Although these are single-plane color formats, the new interface supports multi-plane formats for consistency with drm_fb_blit(). v2: * update documentation (Sam) * add TODO on vaddr location (Sam) Signed-off-by: Thomas Zimmermann Tested-by: Noralf Trønnes Reviewed-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20220808125406.20752-12-tzimmermann@suse.de

drm/format-helper: Rework XRGB8888-to-XRGB2101010 conversion

2022-08-10T07:18:49+00:00

Update XRGB8888-to-XRGB2101010 conversion to support struct iosys_map and convert all users. Although these are single-plane color formats, the new interface supports multi-plane formats for consistency with drm_fb_blit(). v2: * update documentation (Sam) * add TODO on vaddr location (Sam) Signed-off-by: Thomas Zimmermann Reviewed-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20220808125406.20752-11-tzimmermann@suse.de

drm/format-helper: Rework XRGB8888-to-RGB888 conversion

2022-08-10T07:18:49+00:00

Update XRGB8888-to-RGB888 conversion to support struct iosys_map and convert all users. Although these are single-plane color formats, the new interface supports multi-plane formats for consistency with drm_fb_blit(). v2: * update documentation (Sam) * add TODO on vaddr location (Sam) Signed-off-by: Thomas Zimmermann Reviewed-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20220808125406.20752-8-tzimmermann@suse.de