[PATCH 00/12] drm/format-helper: Move to struct iosys_map

Thomas Zimmermann
Wed, 27 Jul 2022 11:33:00 -0000

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.

Thomas Zimmermann (12):
  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

 drivers/gpu/drm/drm_format_helper.c           | 379 +++++++++---------
 drivers/gpu/drm/drm_mipi_dbi.c                |   9 +-
 drivers/gpu/drm/gud/gud_pipe.c                |  20 +-
 drivers/gpu/drm/hyperv/hyperv_drm_modeset.c   |  11 +-
 drivers/gpu/drm/mgag200/mgag200_mode.c        |  11 +-
 drivers/gpu/drm/solomon/ssd130x.c             |   7 +-
 .../gpu/drm/tests/drm_format_helper_test.c    |  14 +-
 drivers/gpu/drm/tiny/cirrus.c                 |  19 +-
 drivers/gpu/drm/tiny/repaper.c                |   6 +-
 drivers/gpu/drm/tiny/simpledrm.c              |  18 +-
 drivers/gpu/drm/tiny/st7586.c                 |   5 +-
 include/drm/drm_format_helper.h               |  56 ++-
 12 files changed, 294 insertions(+), 261 deletions(-)


base-commit: 15fbed4f822211fbb7653c2b8591594d92de9551
prerequisite-patch-id: c2b2f08f0eccc9f5df0c0da49fa1d36267deb11d
prerequisite-patch-id: c67e5d886a47b7d0266d81100837557fda34cb24
prerequisite-patch-id: 3f204510fcbf9530d6540bd8e6128cce598988b6
--
2.37.1