1# SPDX-License-Identifier: GPL-2.0-only 2 3config DRM_CLIENT_LIB 4 tristate 5 depends on DRM 6 select DRM_KMS_HELPER if DRM_FBDEV_EMULATION 7 select FB_CORE if DRM_FBDEV_EMULATION 8 help 9 This option enables the DRM client library and selects all 10 modules and components according to the enabled clients. 11 12config DRM_CLIENT_SELECTION 13 tristate 14 depends on DRM 15 select DRM_CLIENT_LIB if DRM_FBDEV_EMULATION 16 help 17 Drivers that support in-kernel DRM clients have to select this 18 option. 19 20config DRM_CLIENT_SETUP 21 bool 22 depends on DRM_CLIENT_SELECTION 23 help 24 Enables the DRM client selection. DRM drivers that support the 25 default clients should select DRM_CLIENT_SELECTION instead. 26 27menu "Supported DRM clients" 28 depends on DRM_CLIENT_SELECTION 29 30config DRM_FBDEV_EMULATION 31 bool "Enable legacy fbdev support for your modesetting driver" 32 depends on DRM_CLIENT_SELECTION 33 select DRM_CLIENT 34 select DRM_CLIENT_SETUP 35 select FRAMEBUFFER_CONSOLE_DETECT_PRIMARY if FRAMEBUFFER_CONSOLE 36 default FB 37 help 38 Choose this option if you have a need for the legacy fbdev 39 support. Note that this support also provides the linux console 40 support on top of your modesetting driver. 41 42 If in doubt, say "Y". 43 44config DRM_FBDEV_OVERALLOC 45 int "Overallocation of the fbdev buffer" 46 depends on DRM_FBDEV_EMULATION 47 default 100 48 help 49 Defines the fbdev buffer overallocation in percent. Default 50 is 100. Typical values for double buffering will be 200, 51 triple buffering 300. 52 53config DRM_FBDEV_LEAK_PHYS_SMEM 54 bool "Shamelessly allow leaking of fbdev physical address (DANGEROUS)" 55 depends on DRM_FBDEV_EMULATION && EXPERT 56 default n 57 help 58 In order to keep user-space compatibility, we want in certain 59 use-cases to keep leaking the fbdev physical address to the 60 user-space program handling the fbdev buffer. 61 This affects, not only, Amlogic, Allwinner or Rockchip devices 62 with ARM Mali GPUs using a userspace Blob. 63 This option is not supported by upstream developers and should be 64 removed as soon as possible and be considered as a broken and 65 legacy behaviour from a modern fbdev device driver. 66 67 Please send any bug reports when using this to your proprietary 68 software vendor that requires this. 69 70 If in doubt, say "N" or spread the word to your closed source 71 library vendor. 72 73endmenu 74