Hi Noralf, Thank you for the patches. On Monday, 11 September 2017 17:31:54 EEST Noralf Trønnes wrote: > Hi, > > I want to start out by saying that this patchset is low priority for me > and if no one has interest or time to review this, that is just fine. I > was in the flow and just typed it out. > > This patchset adds a way for fbdev emulation code to create a > framebuffer that is backed by a dumb buffer. drm_fb_helper gets a > drm_file to hang the objects on, drm_framebuffer_create_dumb() creates > the framebuffer and drm_fb_helper_fini() destroys it. > I have verified that all cma drivers supports dumb buffers, so > converting the library should be fine for all. Stupid question, what does this give us ? The series makes the call stack more complex (up to a point where I'm getting trouble just following it), what's the advantage that offsets that ? With the exception of vmwgfx that does weird things I won't even try to understand, all drivers seem to use the drm_file object passed to the .dumb_create() operation just to register the GEM object handle. I wonder whether a better solution to use .dumb_create() for framebuffer emulation wouldn't be to move the GEM object handle registration from the .dumb_create() implementation to its caller in the core. > A patch by David Herrmann from a year ago made this easy. It was the > last piece in his work to make it possible to create a drm_file for > in-kernel use, but it never got merged. > > I've cc'ed intel-gfx since that will give CI runs of the core patches if > I understood Daniel right. > > Noralf. > > David Herrmann (1): > drm: provide management functions for drm_file > > Noralf Trønnes (7): > drm/framebuffer: Add drm_framebuffer_create_dumb() > drm/auth: Export drm_dropmaster_ioctl() > drm/fb-helper: Allocate a drm_file > drm/fb-cma-helper: Use drm_framebuffer_create_dumb() > drm/fb-cma-helper: Drop unnecessary fbdev buffer offset > drm/tinydrm: Use drm_fbdev_cma_init() > drm/fb-cma-helper: Remove drm_fbdev_cma_init_with_funcs() > > drivers/gpu/drm/drm_auth.c | 1 + > drivers/gpu/drm/drm_fb_cma_helper.c | 111 ++-------- > drivers/gpu/drm/drm_fb_helper.c | 22 +- > drivers/gpu/drm/drm_file.c | 323 +++++++++++++++---------- > drivers/gpu/drm/drm_framebuffer.c | 61 ++++++ > drivers/gpu/drm/drm_internal.h | 2 - > drivers/gpu/drm/tinydrm/core/tinydrm-core.c | 5 +- > include/drm/drm_auth.h | 2 + > include/drm/drm_fb_helper.h | 9 + > include/drm/drm_file.h | 2 + > include/drm/drm_framebuffer.h | 4 + > 11 files changed, 305 insertions(+), 237 deletions(-) -- Regards, Laurent Pinchart _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
