[PATCH v3 0/5] drm/exynos: fbdev: Use client buffers

[Thomas Zimmermann <tzimmermann@suse.de>]

A client buffer holds the DRM framebuffer for an in-kernel DRM
client. Until now, exynos created an internal ad-hoc framebuffer for
its fbdev emulation, while by-passing the regular interfaces used by
user-space compositors.

Convert exynos' fbdev emulation to use client buffers. Replacing the
existing code with a client buffer allows for stream-lining exynos code
and later also the fbdev helpers. The new framebuffer will be registered
against the client's file and will support handles for GEM objects. It
is then just another framebuffer within the DRM ecosystem.

If all driver's fbdev-emulation helpers can be converted to use client
buffers, the emulation's framebuffer handling as a whole can possibly be
moved into shared helpers.

Patch 1 first fixes a long-standing bug.

Patches 2 to 4 convert exynos' fbdev emulation to client buffers. It
still allocates a GEM object buffer tailored towards fbdev emulation,
but size calculations now use common DRM helpers.

Patch 5 cleans up symbol visibility in exynos' fb code.

v3:
- add error checks to geometry calculation
v2:
- clean up exynos fb header (Chen-Yu)

Thomas Zimmermann (5):
  drm/exynos: fbdev: Remove offset into screen_buffer
  drm/exynos: fbdev: Inline exynos_drm_fbdev_update()
  drm/exynos: fbdev: Calculate buffer geometry with format helpers
  drm/exynos: fbdev: Use a DRM client buffer
  drm/exynos: Make exynos_drm_framebuffer_init() an internal interface

 drivers/gpu/drm/exynos/exynos_drm_fb.c    |   3 +-
 drivers/gpu/drm/exynos/exynos_drm_fb.h    |  10 +-
 drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 111 +++++++++++-----------
 3 files changed, 62 insertions(+), 62 deletions(-)


base-commit: 680a4832a8182b13ac5d55ab0c03c54ebc2baadd
-- 
2.54.0