On 02/15/2017 05:19 PM, Maxime Ripard wrote: > Hi, > > This is a respin of the previous serie called "Support fast framebuffer > panning for i.MX6" made by Stefan 6 monthes ago. The imx6 bits have been > removed, and the comments that were made at that time fixed (hopefully). > > Let me know what you think, > Maxime > > Changes from v2: > - Renamed the CONFIG_DRM_CMA_FBDEV_BUFFER_NUM to > CONFIG_DRM_FBDEV_OVERALLOC, and changed it for a percentage > - Moved the overallocation code into the core fbdev helpers to not rely > on CMA anymore > - Changed the locks taken by drm_fb_helper_ioctl to the mode_config mutex > intead of calling drm_modeset_lock_all > - Don't test against drm_crtc's enabled anymore, but rely on the error > code of drm_crtc_vblank_get instead > - Defined drm_fb_helper_ioctl when DRM_FBDEV_EMULATION is not set in > order to fix a compilation error > - Don't wait for all CRTC's vblank but only the one given in the ioctl > argument > > Changes from v1: > - Added drm_fb_helper_ioctl to DRM_FB_HELPER_DEFAULT_OPS > - Expanded a bit the kerneldoc for drm_fb_helper_ioctl > - Added some locking to drm_fb_helper_ioctl > - Checked that the framebuffer is indeed attached before allowing ioctl > - Added a module parameter to specify the number of framebuffers to > allocate > > Initial cover letter: Support fast framebuffer panning for i.MX6 > > im currently working on supporting double/tripple buffering for the > framebuffer emulation on the i.MX6. While working on it I noticed that the > mainline kernel does not support some features in the generic drm > framebuffer emulation for framebuffer panning and vsync synchronisation. > They are needed for simple framebuffer applications and some OpenGL > libraries using double buffering with FBIOPUT_VSCREENINFO, > FBIO_WAITFORVSYNC and FBIOPAN_DISPLAY. > > Stefan Christ (1): > drm/fb-helper: implement ioctl FBIO_WAITFORVSYNC > > Xinliang Liu (1): > drm/fb-helper: Add multi buffer support for cma fbdev > > drivers/gpu/drm/Kconfig | 9 ++++- > drivers/gpu/drm/drm_fb_helper.c | 73 ++++++++++++++++++++++++++++++++++- > include/drm/drm_fb_helper.h | 12 +++++- > 3 files changed, 93 insertions(+), 1 deletion(-) > > base-commit: 0879b944c95d65f7523d178d3addaebe84e510ec > Hi Maxime, Just tested these patches on Amlogic GXBB to provide 3D Mali acceleration on framebuffer. Tested-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx> Thanks, Neil _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
