Den 08.08.2022 14.53, skrev Thomas Zimmermann:
> Change format-conversion helpers to use struct iosys_map for source
> and destination buffers. Update all users. Also prepare interface for
> multi-plane color formats.
>
> The format-conversion helpers mostly used to convert to I/O memory
> or system memory. To actual memory type depended on the usecase. We
> now have drivers upcomming that do the conversion entirely in system
> memory. It's a good opportunity to stream-line the interface of the
> conversion helpers to use struct iosys_map. Source and destination
> buffers can now be either in system or in I/O memory. Note that the
> implementation still only supports source buffers in system memory.
>
> This patchset also changes the interface to support multi-plane
> color formats, where the values for each component are stored in
> distinct memory locations. Converting from RGBRGBRGB to RRRGGGBBB
> would require a single source buffer with RGB values and 3 destination
> buffers for the R, G and B values. Conversion-helper interfaces now
> support this.
>
> v2:
> * add IOSYS_MAP_INIT_VADDR_IOMEM (Sam)
> * use drm_format_info_bpp() (Sam)
> * update documentation (Sam)
> * rename 'vmap' to 'src' (Sam)
> * many smaller cleanups and fixes (Sam, Jose)
>
> Thomas Zimmermann (14):
> iosys-map: Add IOSYS_MAP_INIT_VADDR_IOMEM()
> drm/format-helper: Provide drm_fb_blit()
> drm/format-helper: Merge drm_fb_memcpy() and drm_fb_memcpy_toio()
> drm/format-helper: Convert drm_fb_swab() to struct iosys_map
> drm/format-helper: Rework XRGB8888-to-RGBG332 conversion
> drm/format-helper: Rework XRGB8888-to-RGBG565 conversion
> drm/format-helper: Rework XRGB8888-to-RGB888 conversion
> drm/format-helper: Rework RGB565-to-XRGB8888 conversion
> drm/format-helper: Rework RGB888-to-XRGB8888 conversion
> drm/format-helper: Rework XRGB8888-to-XRGB2101010 conversion
> drm/format-helper: Rework XRGB8888-to-GRAY8 conversion
> drm/format-helper: Rework XRGB8888-to-MONO conversion
> drm/format-helper: Move destination-buffer handling into internal
> helper
> drm/format-helper: Rename parameter vmap to src
>
Tested-by: Noralf Trønnes <noralf@xxxxxxxxxxx>
* gud: XRGB8888-to-{MONO,GRAY8,RGB332,RGB565}
* mi0283qt (drm_mipi_dbi): XRGB8888-to-RGB565 with swap=true,
drm_fb_memcpy, drm_fb_swab
> drivers/gpu/drm/drm_format_helper.c | 509 ++++++++++--------
> drivers/gpu/drm/drm_mipi_dbi.c | 9 +-
> drivers/gpu/drm/gud/gud_pipe.c | 20 +-
> drivers/gpu/drm/hyperv/hyperv_drm_modeset.c | 9 +-
> drivers/gpu/drm/mgag200/mgag200_mode.c | 9 +-
> drivers/gpu/drm/solomon/ssd130x.c | 7 +-
> .../gpu/drm/tests/drm_format_helper_test.c | 45 +-
> drivers/gpu/drm/tiny/cirrus.c | 19 +-
> drivers/gpu/drm/tiny/repaper.c | 6 +-
> drivers/gpu/drm/tiny/simpledrm.c | 8 +-
> drivers/gpu/drm/tiny/st7586.c | 5 +-
> include/drm/drm_format_helper.h | 56 +-
> include/linux/iosys-map.h | 15 +-
> 13 files changed, 416 insertions(+), 301 deletions(-)
>
>
> base-commit: 2bdae66c9988dd0f07633629c0a85383cfc05940
> prerequisite-patch-id: c2b2f08f0eccc9f5df0c0da49fa1d36267deb11d
> prerequisite-patch-id: c67e5d886a47b7d0266d81100837557fda34cb24
> prerequisite-patch-id: 3f204510fcbf9530d6540bd8e6128cce598988b6
