Provide drm_client_setup() to initialize in-kernel DRM clients. Then convert all drivers to the new interface. Remove old interfaces for the fbdev client. So far, the only supported DRM client in the kernel is for fbdev emulation with its fbcon support. Long term, we want to move away from fbcon. Possible replacements are DRM-based loggers, boot-up logos or maybe even a console. The exact kind of client should be configurable by the user. You can find examples of such clients at [1] and [2]. To do this, we need one single interface for drivers to initialize the configured in-kernel clients, replacing the current call to initialize fbdev emulation. The fbdev emulation also depends on the DRM driver's management, so drivers differ in what fbdev code they run. We need to abstract this as well. This patchset addresses these topics. While there are many patches, most of them are small, straight-forward changes to drivers or rearrange existing code. Patches 1 to 3 add a driver-neutral setup function for the fbdev client. The new callback fbdev_probe in struct drm_driver creates the GEM buffer for fbdev output. It replaces the existing callback fb_probe from struct drm_fb_helper_funcs, which currently does the same. The client code is equal to code in exisisting fbdev emulation, except for its use of fbdev_probe. Patch 4 adds drm_client_setup(), a client-agnostic interface to initialize the in-kernel DRM clients. It only supports the new fbdev emulation setup, but additional clients will be added here. Hopefully this will hide future changes to DRM client initialization from drivers. Patches 5 to 48 rework all drivers with GEM memory management based on DMA helpers. This is fairly straigh-forward. The fbdev-dma helpers provide an implementation of the fbdev_probe helpers. Each driver sets the new callback in its instance of struct drm_driver and calls drm_client_setup(). Then the old fbdev-dma client goes away. Patches 49 to 62 do the same for drivers with SHMEM-based GEM memory management. The fbdev client code is again the same as before, except for the fbdev_probe callback. Patches 63 to 72 do the same for drivers with TTM-based GEM memory management. Patches 73 to 80 do the same for most of the remaining drivers with custom fbdev emulation. As before, the new fbdev client code is mostly the same the old one; except for the fbdev_probe function. Changes for i915 and xe are a bit more involved, so they are left out for now and will be send in a separate series. This patchset has been tested on various hardware with the various memory managers involved. v4: - drop unneeded changes to panel/ili9341 - fix docs v3: - add missing macros for driver ops (Sam) - split off i915/xe changes v2: - add drm_client_setup_with_fourcc() - xe: set fbdev_probe in xe_display_driver_set_hooks() - do cleanups [1] https://lore.kernel.org/dri-devel/20240801100640.462606-4-jfalempe@xxxxxxxxxx/ [2] https://lists.freedesktop.org/archives/dri-devel/2019-March/212113.html Thomas Zimmermann (80): drm/fbdev-helper: Move color-mode lookup into 4CC format helper drm/fbdev-helper: Set and clear VGA switcheroo client from fb_info drm/fbdev: Add memory-agnostic fbdev client drm: Add client-agnostic setup helper drm/fbdev-dma: Support struct drm_driver.fbdev_probe drm/arcgpu: Run DRM default client setup drm/arm/komeda: Run DRM default client setup drm/arm/hdlcd: Run DRM default client setup drm/arm/malidp: Run DRM default client setup drm/aspeed: Run DRM default client setup drm/atmel-hdlcd: Run DRM default client setup drm/fsl-dcu: Run DRM default client setup drm/hisilicon/kirin: Run DRM default client setup drm/hx8357d: Run DRM default client setup drm/ili9163: Run DRM default client setup drm/ili9225: Run DRM default client setup drm/ili9341: Run DRM default client setup drm/ili9486: Run DRM default client setup drm/imx/dcss: Run DRM default client setup drm/imx/ipuv3: Run DRM default client setup drm/imx/lcdc: Run DRM default client setup drm/ingenic: Run DRM default client setup drm/kmb: Run DRM default client setup drm/logicvc: Run DRM default client setup drm/mcde: Run DRM default client setup drm/mediatek: Run DRM default client setup drm/meson: Run DRM default client setup drm/mi0283qt: Run DRM default client setup drm/mxsfb/lcdif: Run DRM default client setup drm/mxsfb: Run DRM default client setup drm/panel-mipi-dbi: Run DRM default client setup drm/pl111: Run DRM default client setup drm/renesas/rcar-du: Run DRM default client setup drm/renesas/rz-du: Run DRM default client setup drm/renesas/shmobile: Run DRM default client setup drm/repaper: Run DRM default client setup drm/rockchip: Run DRM default client setup drm/sti: Run DRM default client setup drm/stm: Run DRM default client setup drm/sun4i: Run DRM default client setup drm/tidss: Run DRM default client setup drm/tilcdc: Run DRM default client setup drm/st7586: Run DRM default client setup drm/st7735r: Run DRM default client setup drm/tve200: Run DRM default client setup drm/vc4: Run DRM default client setup drm/xlnx: Run DRM default client setup drm/fbdev-dma: Remove obsolete setup function drm/fbdev-shmem: Support struct drm_driver.fbdev_probe drm/ast: Run DRM default client setup drm/bochs: Run DRM default client setup drm/cirrus: Run DRM default client setup drm/gm12u320: Run DRM default client setup drm/gud: Run DRM default client setup drm/hyperv_drm: Run DRM default client setup drm/mgag200: Run DRM default client setup drm/ofdrm: Use DRM default client setup drm/simpledrm: Run DRM default client setup drm/solomon: Run DRM default client setup drm/udl: Run DRM default client setup drm/virtgpu: Run DRM default client setup drm/vkms: Run DRM default client setup drm/fbdev-shmem: Remove obsolete setup function drm/fbdev-ttm: Support struct drm_driver.fbdev_probe drm/amdgpu: Run DRM default client setup drm/hisilicon/hibmc: Run DRM default client setup drm/loongson: Run DRM default client setup drm/nouveau: Run DRM default client setup drm/qxl: Run DRM default client setup drm/vboxvideo: Run DRM default client setup drm/vmwgfx: Run DRM default client setup drm/fbdev-ttm: Remove obsolete setup function drm/armada: Run DRM default client setup drm/exynos-drm: Run DRM default client setup drm/gma500: Run DRM default client setup drm/msm: Run DRM default client setup drm/radeon: Run DRM default client setup drm/tegra: Run DRM default client setup drm/omapdrm: Remove struct drm_fb_helper from struct omap_fbdev. drm/omapdrm: Run DRM default client setup drivers/gpu/drm/Makefile | 5 +- drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 11 +- .../gpu/drm/arm/display/komeda/komeda_drv.c | 4 +- .../gpu/drm/arm/display/komeda/komeda_kms.c | 2 + drivers/gpu/drm/arm/hdlcd_drv.c | 4 +- drivers/gpu/drm/arm/malidp_drv.c | 4 +- drivers/gpu/drm/armada/armada_drm.h | 11 +- drivers/gpu/drm/armada/armada_drv.c | 4 +- drivers/gpu/drm/armada/armada_fbdev.c | 113 +-------- drivers/gpu/drm/aspeed/aspeed_gfx_drv.c | 4 +- drivers/gpu/drm/ast/ast_drv.c | 6 +- drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c | 5 +- drivers/gpu/drm/drm_client_setup.c | 66 +++++ drivers/gpu/drm/drm_fb_helper.c | 102 +++----- drivers/gpu/drm/drm_fbdev_client.c | 141 +++++++++++ drivers/gpu/drm/drm_fbdev_dma.c | 170 +++---------- drivers/gpu/drm/drm_fbdev_shmem.c | 170 +++---------- drivers/gpu/drm/drm_fbdev_ttm.c | 225 +++++------------- drivers/gpu/drm/drm_fourcc.c | 30 ++- drivers/gpu/drm/exynos/exynos_drm_drv.c | 4 +- drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 99 +------- drivers/gpu/drm/exynos/exynos_drm_fbdev.h | 15 +- drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c | 4 +- drivers/gpu/drm/gma500/fbdev.c | 100 +------- drivers/gpu/drm/gma500/psb_drv.c | 4 +- drivers/gpu/drm/gma500/psb_drv.h | 12 +- drivers/gpu/drm/gud/gud_drv.c | 4 +- .../gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 4 +- .../gpu/drm/hisilicon/kirin/kirin_drm_ade.c | 2 + .../gpu/drm/hisilicon/kirin/kirin_drm_drv.c | 4 +- drivers/gpu/drm/hyperv/hyperv_drm_drv.c | 4 +- drivers/gpu/drm/imx/dcss/dcss-kms.c | 4 +- drivers/gpu/drm/imx/ipuv3/imx-drm-core.c | 4 +- drivers/gpu/drm/imx/lcdc/imx-lcdc.c | 4 +- drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 4 +- drivers/gpu/drm/kmb/kmb_drv.c | 4 +- drivers/gpu/drm/logicvc/logicvc_drm.c | 16 +- drivers/gpu/drm/loongson/lsdc_drv.c | 4 +- drivers/gpu/drm/mcde/mcde_drv.c | 4 +- drivers/gpu/drm/mediatek/mtk_drm_drv.c | 4 +- drivers/gpu/drm/meson/meson_drv.c | 4 +- drivers/gpu/drm/mgag200/mgag200_drv.c | 5 +- drivers/gpu/drm/msm/msm_drv.c | 4 +- drivers/gpu/drm/msm/msm_drv.h | 13 +- drivers/gpu/drm/msm/msm_fbdev.c | 144 ++--------- drivers/gpu/drm/mxsfb/lcdif_drv.c | 4 +- drivers/gpu/drm/mxsfb/mxsfb_drv.c | 4 +- drivers/gpu/drm/nouveau/nouveau_drm.c | 10 +- drivers/gpu/drm/omapdrm/omap_drv.c | 1 + drivers/gpu/drm/omapdrm/omap_drv.h | 3 + drivers/gpu/drm/omapdrm/omap_fbdev.c | 161 ++++--------- drivers/gpu/drm/omapdrm/omap_fbdev.h | 8 + drivers/gpu/drm/pl111/pl111_drv.c | 4 +- drivers/gpu/drm/qxl/qxl_drv.c | 4 +- drivers/gpu/drm/radeon/radeon_drv.c | 14 +- drivers/gpu/drm/radeon/radeon_fbdev.c | 114 +-------- drivers/gpu/drm/radeon/radeon_mode.h | 12 +- drivers/gpu/drm/renesas/rcar-du/rcar_du_drv.c | 4 +- drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.c | 4 +- .../gpu/drm/renesas/shmobile/shmob_drm_drv.c | 5 +- drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 4 +- drivers/gpu/drm/solomon/ssd130x.c | 4 +- drivers/gpu/drm/sti/sti_drv.c | 4 +- drivers/gpu/drm/stm/drv.c | 5 +- drivers/gpu/drm/sun4i/sun4i_drv.c | 4 +- drivers/gpu/drm/tegra/drm.c | 5 +- drivers/gpu/drm/tegra/drm.h | 12 +- drivers/gpu/drm/tegra/fbdev.c | 98 +------- drivers/gpu/drm/tidss/tidss_drv.c | 4 +- drivers/gpu/drm/tilcdc/tilcdc_drv.c | 5 +- drivers/gpu/drm/tiny/arcpgu.c | 4 +- drivers/gpu/drm/tiny/bochs.c | 5 +- drivers/gpu/drm/tiny/cirrus.c | 4 +- drivers/gpu/drm/tiny/gm12u320.c | 4 +- drivers/gpu/drm/tiny/hx8357d.c | 4 +- drivers/gpu/drm/tiny/ili9163.c | 4 +- drivers/gpu/drm/tiny/ili9225.c | 4 +- drivers/gpu/drm/tiny/ili9341.c | 4 +- drivers/gpu/drm/tiny/ili9486.c | 4 +- drivers/gpu/drm/tiny/mi0283qt.c | 4 +- drivers/gpu/drm/tiny/ofdrm.c | 9 +- drivers/gpu/drm/tiny/panel-mipi-dbi.c | 4 +- drivers/gpu/drm/tiny/repaper.c | 4 +- drivers/gpu/drm/tiny/simpledrm.c | 9 +- drivers/gpu/drm/tiny/st7586.c | 4 +- drivers/gpu/drm/tiny/st7735r.c | 4 +- drivers/gpu/drm/tve200/tve200_drv.c | 9 +- drivers/gpu/drm/udl/udl_drv.c | 4 +- drivers/gpu/drm/vboxvideo/vbox_drv.c | 4 +- drivers/gpu/drm/vc4/vc4_drv.c | 5 +- drivers/gpu/drm/virtio/virtgpu_drv.c | 6 +- drivers/gpu/drm/vkms/vkms_drv.c | 4 +- drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 5 +- drivers/gpu/drm/xlnx/zynqmp_kms.c | 4 +- include/drm/drm_client_setup.h | 15 ++ include/drm/drm_drv.h | 18 ++ include/drm/drm_fbdev_client.h | 19 ++ include/drm/drm_fbdev_dma.h | 13 +- include/drm/drm_fbdev_shmem.h | 13 +- include/drm/drm_fbdev_ttm.h | 15 +- include/drm/drm_fourcc.h | 1 + 101 files changed, 889 insertions(+), 1369 deletions(-) create mode 100644 drivers/gpu/drm/drm_client_setup.c create mode 100644 drivers/gpu/drm/drm_fbdev_client.c create mode 100644 include/drm/drm_client_setup.h create mode 100644 include/drm/drm_fbdev_client.h base-commit: c60c8a9f80f13dfdeed45927a71d65b0250e17d2 prerequisite-patch-id: 0aa359f6144c4015c140c8a6750be19099c676fb prerequisite-patch-id: c67e5d886a47b7d0266d81100837557fda34cb24 prerequisite-patch-id: cbc453ee02fae02af22fbfdce56ab732c7a88c36 -- 2.46.0
