Den 18.06.2018 16.17, skrev Noralf Trønnes:
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. Notable changes since version 1: - Rework client unregister code. I've used reference counting to manage the fact that both the client itself and the driver through drm_dev_unregister() can release the client. The client is now released using drm_client_put() instead of drm_client_free(). - fbdev: Use a shadow buffer for framebuffers that have a dirty callback. This makes the fbdev client truly generic and useable for all drivers. There's a blitting penalty, but this is generic emulation after all. The reason for needing a shadow buffer is that deferred I/O only works with kmalloc/vmalloc buffers and not with shmem buffers (page->lru/mapping). - Let tinydrm use the full fbdev client Noralf. Changes since version 1: - Make it possible to embed struct drm_client_dev and drop the private pointer - Use kref reference counting to control client release since both the client and the driver can release. - Add comment about using dma-buf as a possibility with some rework - Move buffer NULL check to drm_client_framebuffer_delete() - Move client name to struct drm_client_dev - Move up drm_dev_get/put calls to make them more visible - Move drm_client_dev.list definition to later patch that makes use of it - Embed drm_client at the beginning of drm_fb_helper to avoid a fragile transitional kfree hack in drm_client_release() - Set owner in drm_fbdev_fb_ops - Add kerneldoc to drm_fb_helper_generic_probe() - Remove unused functions - Change name drm_client_funcs.lastclose -> .restore - Change name drm_client_funcs.remove -> .unregister - Rework unregister code - tinydrm: Use drm_fbdev_generic_setup() and remove drm_fb_cma_fbdev_init_with_funcs() David Herrmann (1): drm: provide management functions for drm_file Noralf Trønnes (11): drm/file: Don't set master on in-kernel clients drm: Make ioctls available for in-kernel clients
Patches 1-3 applied to drm-misc-next. Thanks for reviewing! Noralf.
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/debugfs: Add internal client debugfs file drm/fb-helper: Finish the generic fbdev emulation drm/tinydrm: Use drm_fbdev_generic_setup() drm/cma-helper: Remove drm_fb_cma_fbdev_init_with_funcs() Documentation/gpu/drm-client.rst | 12 + Documentation/gpu/index.rst | 1 + drivers/gpu/drm/Makefile | 2 +- drivers/gpu/drm/drm_client.c | 435 ++++++++++++++++++++++++++++ drivers/gpu/drm/drm_crtc_internal.h | 19 +- drivers/gpu/drm/drm_debugfs.c | 7 + drivers/gpu/drm/drm_drv.c | 8 + drivers/gpu/drm/drm_dumb_buffers.c | 33 ++- drivers/gpu/drm/drm_fb_cma_helper.c | 380 +++--------------------- drivers/gpu/drm/drm_fb_helper.c | 330 ++++++++++++++++++++- 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 + drivers/gpu/drm/tinydrm/core/tinydrm-core.c | 3 +- drivers/gpu/drm/tinydrm/ili9225.c | 1 - drivers/gpu/drm/tinydrm/mi0283qt.c | 1 - drivers/gpu/drm/tinydrm/st7586.c | 1 - drivers/gpu/drm/tinydrm/st7735r.c | 1 - include/drm/drm_client.h | 156 ++++++++++ include/drm/drm_device.h | 21 ++ include/drm/drm_fb_cma_helper.h | 6 - include/drm/drm_fb_helper.h | 38 +++ 25 files changed, 1298 insertions(+), 514 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
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