Add fbdev helpers for framebuffers in DMA-able memory and update fbdev emulation in the respective DRM drivers. DMA memory used to handled as system memory. Improve this and prepare for possible future changes. Patch 1 adds initializer macros for struct fb_ops and a Kconfig token for framebuffers in DMA memory. Patches 2 to 5 update fbdev-dma and tegra. No functional changes are expected as both used system memory before. Patches 6 and 7 update exynos to use DMA helpers. Exynos incorrectly used fbdev's I/O-memory helpers. Fix this. Patches 8 to 10 update omapdrm to use DMA helpers. Patch 7 first reworks the driver's mmap to current best practices. This also makes it suitable for use with fbdev, which patches 8 and 9 implement. Patchies 11 removes some fbdev macros for system memory that are now unused; patch 12 fixes some comments. The patchset would ideally go through drm-misc-next. Future patches can build upon it and update fbdev drivers in similar ways. v3: * set screen_buffer in tegra (Thierry) v2: * fix omap mmap flags * drop FBINFO_DEFAULT from patches * minor cleanups Thomas Zimmermann (12): fbdev: Add fb_ops init macros for framebuffers in DMA-able memory drm/fbdev-dma: Use fbdev DMA helpers drm/tegra: Use fbdev DMA helpers drm/tegra: Set fbdev FBINFO_VIRTFB flag drm/tegra: Store pointer to vmap'ed framebuffer in screen_buffer drm/exynos: Use fbdev DMA helpers drm/exynos: Set fbdev FBINFO_VIRTFB flag drm/omapdrm: Set VM flags in GEM-object mmap function drm/omapdrm: Use GEM mmap for fbdev emulation drm/omapdrm: Set fbdev FBINFO_VIRTFB flag fbdev: Remove FB_DEFAULT_SYS_OPS fbdev: Harmonize some comments in <linux/fb.h> drivers/gpu/drm/Kconfig | 2 +- drivers/gpu/drm/drm_fbdev_dma.c | 4 ++-- drivers/gpu/drm/exynos/Kconfig | 2 +- drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 5 ++-- drivers/gpu/drm/omapdrm/Kconfig | 2 +- drivers/gpu/drm/omapdrm/omap_drv.c | 12 +--------- drivers/gpu/drm/omapdrm/omap_fbdev.c | 16 +++++++++++-- drivers/gpu/drm/omapdrm/omap_gem.c | 24 +++++-------------- drivers/gpu/drm/omapdrm/omap_gem.h | 3 --- drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c | 7 +----- drivers/gpu/drm/tegra/Kconfig | 2 +- drivers/gpu/drm/tegra/fbdev.c | 7 +++--- drivers/video/fbdev/Kconfig | 8 +++++++ include/linux/fb.h | 29 ++++++++++------------- 14 files changed, 56 insertions(+), 67 deletions(-) -- 2.41.0
