[PATCH v2 00/11] drm: Improve fbdev emulation for DMA-able framebuffers
Thomas Zimmermann
tzimmermann at suse.de
Thu Jul 6 05:46:38 PDT 2023
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 4 update fbdev-dma and tegra. No functional changes
are expected as both used system memory before.
Patches 5 and 6 update exynos to use DMA helpers. Exynos incorrectly
used fbdev's I/O-memory helpers. Fix this.
Patches 7 to 9 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 10 removes some fbdev macros for system memory that are now
unused; patch 11 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.
v2:
* fix omap mmap flags
* drop FBINFO_DEFAULT from patches
* minor cleanups
Thomas Zimmermann (11):
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/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 | 5 ++--
drivers/video/fbdev/Kconfig | 8 +++++++
include/linux/fb.h | 29 ++++++++++-------------
14 files changed, 55 insertions(+), 66 deletions(-)
--
2.41.0
More information about the linux-arm-kernel
mailing list