This patchset adds generic fbdev emulation for drivers that supports GEM
based dumb buffers which support .gem_prime_vmap and gem_prime_mmap. An
API is begun to support in-kernel clients in general.
The CMA helper drivers is moved as a whole over to this generic fbdev
emulation. I've added patches 8 and 9 to show where it's heading.
tinydrm will be the first driver to use the full emulation when it moves
to vmalloc buffers. The CMA helper drivers will be converted one by one
later.
This work is based on an idea[1] by Laurent Pinchart:
Ideally I'd like to remove 100% of fbdev-related
code from drivers. This includes
- initialization and cleanup of fbdev helpers
- fbdev restore in last_close()
- forwarding of hotplug events to fbdev compatibility layer
Noralf.
[1] https://lists.freedesktop.org/archives/dri-devel/2017-September/152612.html
David Herrmann (1):
drm: provide management functions for drm_file
Noralf Trønnes (8):
drm/file: Don't set master on in-kernel clients
drm: Make ioctls available for in-kernel clients
drm: Begin an API for in-kernel clients
drm/fb-helper: Add generic fbdev emulation .fb_probe function
drm/pl111: Set .gem_prime_vmap and .gem_prime_mmap
drm/cma-helper: Use the generic fbdev emulation
drm/client: Add client callbacks
drm/fb-helper: Finish the generic fbdev emulation
Documentation/gpu/drm-client.rst | 12 +
Documentation/gpu/index.rst | 1 +
drivers/gpu/drm/Makefile | 2 +-
drivers/gpu/drm/drm_client.c | 511 ++++++++++++++++++++++++++++++++++++
drivers/gpu/drm/drm_crtc_internal.h | 19 +-
drivers/gpu/drm/drm_debugfs.c | 7 +
drivers/gpu/drm/drm_drv.c | 9 +
drivers/gpu/drm/drm_dumb_buffers.c | 33 ++-
drivers/gpu/drm/drm_fb_cma_helper.c | 365 ++++----------------------
drivers/gpu/drm/drm_fb_helper.c | 287 ++++++++++++++++++++
drivers/gpu/drm/drm_file.c | 304 ++++++++++++---------
drivers/gpu/drm/drm_framebuffer.c | 42 +--
drivers/gpu/drm/drm_internal.h | 2 +
drivers/gpu/drm/drm_ioctl.c | 4 +-
drivers/gpu/drm/drm_probe_helper.c | 3 +
drivers/gpu/drm/pl111/pl111_drv.c | 2 +
include/drm/drm_client.h | 146 +++++++++++
include/drm/drm_device.h | 21 ++
include/drm/drm_fb_cma_helper.h | 3 -
include/drm/drm_fb_helper.h | 33 +++
20 files changed, 1322 insertions(+), 484 deletions(-)
create mode 100644 Documentation/gpu/drm-client.rst
create mode 100644 drivers/gpu/drm/drm_client.c
create mode 100644 include/drm/drm_client.h
--
2.15.1
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