DRM provides a number of wrappers around fbdev cfb_() sys_(), fb_io_() and fb_sys_() helpers. The DRM functions don't provide any additional functionality for most DRM drivers. So remove them and call the fbdev I/O helpers directly. The DRM fbdev I/O wrappers were originally added because <linux/fb.h> does not protect its content with CONFIG_FB. DRM fbdev emulation did not build if the config option had been disabled. This has been fixed. For fbdev-generic and i915, the wrappers added support for damage handling. But this is better handled within the two callers, as each is special in its damage handling. Patch 1 adds several internal Kconfig otpions that DRM drivers (and possibly other fbdev code) will use to select the correct set of I/O helpers. Patches 2 to 9 replace the DRM wrappers in a number of fbdev emulations. Patch 10 exports two helpers for damage handling. Patches 11 and 12 update fbdev-generic and i915 with the help of the exported functions. The patches also remove DRM's fbdev I/O helpers, which are now unused. DRM's fbdev helpers had to select fbdev I/O helpers for I/O and for system memory. Each fbdev emulation now selects the correct helpers for itself. Depending on the selected DRM drivers, kernel builds will now only contain the necessary fbdev I/O helpers and might be slightly smaller in size. v3: * fix Kconfig options (Jingfeng) * minimize changes to exynos (Sam) v2: * simplify Kconfig handling (Sam) Thomas Zimmermann (12): fbdev: Add Kconfig options to select different fb_ops helpers drm/armada: Use regular fbdev I/O helpers drm/exynos: Use regular fbdev I/O helpers drm/gma500: Use regular fbdev I/O helpers drm/radeon: Use regular fbdev I/O helpers drm/fbdev-dma: Use regular fbdev I/O helpers drm/msm: Use regular fbdev I/O helpers drm/omapdrm: Use regular fbdev I/O helpers drm/tegra: Use regular fbdev I/O helpers drm/fb-helper: Export helpers for marking damage areas drm/fbdev-generic: Implement dedicated fbdev I/O helpers drm/i915: Implement dedicated fbdev I/O helpers drivers/gpu/drm/Kconfig | 10 +- drivers/gpu/drm/armada/Kconfig | 1 + drivers/gpu/drm/armada/armada_fbdev.c | 9 +- drivers/gpu/drm/drm_fb_helper.c | 233 ++------------------- drivers/gpu/drm/drm_fbdev_dma.c | 12 +- drivers/gpu/drm/drm_fbdev_generic.c | 47 ++++- drivers/gpu/drm/exynos/Kconfig | 1 + drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 10 +- drivers/gpu/drm/gma500/Kconfig | 1 + drivers/gpu/drm/gma500/fbdev.c | 9 +- drivers/gpu/drm/i915/Kconfig | 1 + drivers/gpu/drm/i915/display/intel_fbdev.c | 51 ++++- drivers/gpu/drm/msm/Kconfig | 1 + drivers/gpu/drm/msm/msm_fbdev.c | 12 +- drivers/gpu/drm/omapdrm/Kconfig | 1 + drivers/gpu/drm/omapdrm/omap_fbdev.c | 12 +- drivers/gpu/drm/radeon/Kconfig | 1 + drivers/gpu/drm/radeon/radeon_fbdev.c | 9 +- drivers/gpu/drm/tegra/Kconfig | 1 + drivers/gpu/drm/tegra/fbdev.c | 11 +- drivers/video/fbdev/Kconfig | 21 ++ include/drm/drm_fb_helper.h | 84 +------- 22 files changed, 183 insertions(+), 355 deletions(-) base-commit: f533234d40e8f5b8599bd5bc97fa8e30384aec03 prerequisite-patch-id: 0aa359f6144c4015c140c8a6750be19099c676fb prerequisite-patch-id: c67e5d886a47b7d0266d81100837557fda34cb24 prerequisite-patch-id: cbc453ee02fae02af22fbfdce56ab732c7a88c36 -- 2.40.1
