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c8a17756c4
Open Firmware provides basic display output via the 'display' node.
DT platform code already provides a device that represents the node's
framebuffer. Add a DRM driver for the device. The display mode and
color format is pre-initialized by the system's firmware. Runtime
modesetting via DRM is not possible. The display is useful during
early boot stages or as error fallback.
Similar functionality is already provided by fbdev's offb driver,
which is insufficient for modern userspace. The old driver includes
support for BootX device tree, which can be found on old 32-bit
PowerPC Macintosh systems. If these are still in use, the
functionality can be added to ofdrm or implemented in a new
driver. As with simpledrm, the fbdev driver cannot be selected if
ofdrm is already enabled.
Two notable points about the driver:
* Reading the framebuffer aperture from the device tree is not
reliable on all systems. Ofdrm takes the heuristics and a comment
from offb to pick the correct range.
* No resource management may be tied to the underlying PCI device.
Otherwise the handover to the native driver will fail with a resource
conflict. PCI management is therefore done as part of the platform
device's cleanup.
The driver has been tested on qemu's ppc64le emulation. The device
hand-over has been tested with bochs.
v5:
* use drm_atomic_helper_check_crtc_primary_plane()
v4:
* set preferred depth to the correct value
* set bpp value for console emulation
* output scanout-buffer parameters with drm_dbg()
v3:
* reintegrate FWFB helpers into ofdrm
* use damage iterator
* sync GEM BOs with drm_gem_fb_{begin,end}_cpu_access()
* fix various atomic_check helpers
* remove CRTC atomic_{enable,disable} (Javier)
* compute stride with drm_format_info_min_pitch() (Daniel)
v2:
* removed simple-pipe helpers
* built driver on top of FWFB helpers
* merged all init code into single function
* make PCI support optional (Michal)
* support COMPILE_TEST (Javier)
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
convert
Link: https://patchwork.freedesktop.org/patch/msgid/20221011150712.3928-2-tzimmermann@suse.de
214 lines
6.3 KiB
Text
214 lines
6.3 KiB
Text
# SPDX-License-Identifier: GPL-2.0-only
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config DRM_ARCPGU
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tristate "ARC PGU"
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depends on DRM && OF
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select DRM_GEM_DMA_HELPER
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select DRM_KMS_HELPER
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help
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Choose this option if you have an ARC PGU controller.
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If M is selected the module will be called arcpgu.
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config DRM_BOCHS
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tristate "DRM Support for bochs dispi vga interface (qemu stdvga)"
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depends on DRM && PCI && MMU
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select DRM_KMS_HELPER
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select DRM_VRAM_HELPER
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select DRM_TTM
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select DRM_TTM_HELPER
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help
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This is a KMS driver for qemu's stdvga output. Choose this option
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for qemu.
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If M is selected the module will be called bochs.
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config DRM_CIRRUS_QEMU
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tristate "Cirrus driver for QEMU emulated device"
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depends on DRM && PCI && MMU
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select DRM_KMS_HELPER
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select DRM_GEM_SHMEM_HELPER
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help
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This is a KMS driver for emulated cirrus device in qemu.
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It is *NOT* intended for real cirrus devices. This requires
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the modesetting userspace X.org driver.
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Cirrus is obsolete, the hardware was designed in the 90ies
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and can't keep up with todays needs. More background:
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https://www.kraxel.org/blog/2014/10/qemu-using-cirrus-considered-harmful/
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Better alternatives are:
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- stdvga (DRM_BOCHS, qemu -vga std, default in qemu 2.2+)
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- qxl (DRM_QXL, qemu -vga qxl, works best with spice)
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- virtio (DRM_VIRTIO_GPU), qemu -vga virtio)
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config DRM_GM12U320
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tristate "GM12U320 driver for USB projectors"
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depends on DRM && USB && MMU
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select DRM_KMS_HELPER
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select DRM_GEM_SHMEM_HELPER
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help
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This is a KMS driver for projectors which use the GM12U320 chipset
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for video transfer over USB2/3, such as the Acer C120 mini projector.
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config DRM_OFDRM
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tristate "Open Firmware display driver"
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depends on DRM && OF && (PPC || COMPILE_TEST)
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select APERTURE_HELPERS
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select DRM_GEM_SHMEM_HELPER
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select DRM_KMS_HELPER
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help
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DRM driver for Open Firmware framebuffers.
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This driver assumes that the display hardware has been initialized
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by the Open Firmware before the kernel boots. Scanout buffer, size,
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and display format must be provided via device tree.
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config DRM_PANEL_MIPI_DBI
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tristate "DRM support for MIPI DBI compatible panels"
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depends on DRM && SPI
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select DRM_KMS_HELPER
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select DRM_GEM_DMA_HELPER
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select DRM_MIPI_DBI
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select BACKLIGHT_CLASS_DEVICE
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select VIDEOMODE_HELPERS
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help
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Say Y here if you want to enable support for MIPI DBI compatible
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panels. The controller command setup can be provided using a
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firmware file. For more information see
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https://github.com/notro/panel-mipi-dbi/wiki.
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To compile this driver as a module, choose M here.
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config DRM_SIMPLEDRM
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tristate "Simple framebuffer driver"
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depends on DRM && MMU
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select APERTURE_HELPERS
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select DRM_GEM_SHMEM_HELPER
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select DRM_KMS_HELPER
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help
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DRM driver for simple platform-provided framebuffers.
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This driver assumes that the display hardware has been initialized
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by the firmware or bootloader before the kernel boots. Scanout
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buffer, size, and display format must be provided via device tree,
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UEFI, VESA, etc.
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On x86 BIOS or UEFI systems, you should also select SYSFB_SIMPLEFB
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to use UEFI and VESA framebuffers.
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config TINYDRM_HX8357D
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tristate "DRM support for HX8357D display panels"
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depends on DRM && SPI
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select DRM_KMS_HELPER
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select DRM_GEM_DMA_HELPER
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select DRM_MIPI_DBI
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select BACKLIGHT_CLASS_DEVICE
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help
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DRM driver for the following HX8357D panels:
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* YX350HV15-T 3.5" 340x350 TFT (Adafruit 3.5")
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If M is selected the module will be called hx8357d.
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config TINYDRM_ILI9163
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tristate "DRM support for ILI9163 display panels"
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depends on DRM && SPI
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select BACKLIGHT_CLASS_DEVICE
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select DRM_GEM_DMA_HELPER
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select DRM_KMS_HELPER
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select DRM_MIPI_DBI
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help
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DRM driver for the following Ilitek ILI9163 panels:
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* NHD-1.8-128160EF 128x160 TFT
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If M is selected the module will be called ili9163.
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config TINYDRM_ILI9225
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tristate "DRM support for ILI9225 display panels"
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depends on DRM && SPI
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select DRM_KMS_HELPER
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select DRM_GEM_DMA_HELPER
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select DRM_MIPI_DBI
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help
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DRM driver for the following Ilitek ILI9225 panels:
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* No-name 2.2" color screen module
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If M is selected the module will be called ili9225.
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config TINYDRM_ILI9341
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tristate "DRM support for ILI9341 display panels"
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depends on DRM && SPI
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select DRM_KMS_HELPER
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select DRM_GEM_DMA_HELPER
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select DRM_MIPI_DBI
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select BACKLIGHT_CLASS_DEVICE
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help
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DRM driver for the following Ilitek ILI9341 panels:
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* YX240QV29-T 2.4" 240x320 TFT (Adafruit 2.4")
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If M is selected the module will be called ili9341.
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config TINYDRM_ILI9486
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tristate "DRM support for ILI9486 display panels"
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depends on DRM && SPI
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select DRM_KMS_HELPER
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select DRM_GEM_DMA_HELPER
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select DRM_MIPI_DBI
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select BACKLIGHT_CLASS_DEVICE
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help
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DRM driver for the following Ilitek ILI9486 panels:
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* PISCREEN 3.5" 320x480 TFT (Ozzmaker 3.5")
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* RPILCD 3.5" 320x480 TFT (Waveshare 3.5")
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If M is selected the module will be called ili9486.
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config TINYDRM_MI0283QT
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tristate "DRM support for MI0283QT"
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depends on DRM && SPI
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select DRM_KMS_HELPER
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select DRM_GEM_DMA_HELPER
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select DRM_MIPI_DBI
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select BACKLIGHT_CLASS_DEVICE
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help
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DRM driver for the Multi-Inno MI0283QT display panel
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If M is selected the module will be called mi0283qt.
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config TINYDRM_REPAPER
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tristate "DRM support for Pervasive Displays RePaper panels (V231)"
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depends on DRM && SPI
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select DRM_KMS_HELPER
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select DRM_GEM_DMA_HELPER
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help
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DRM driver for the following Pervasive Displays panels:
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1.44" TFT EPD Panel (E1144CS021)
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1.90" TFT EPD Panel (E1190CS021)
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2.00" TFT EPD Panel (E2200CS021)
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2.71" TFT EPD Panel (E2271CS021)
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If M is selected the module will be called repaper.
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config TINYDRM_ST7586
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tristate "DRM support for Sitronix ST7586 display panels"
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depends on DRM && SPI
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select DRM_KMS_HELPER
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select DRM_GEM_DMA_HELPER
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select DRM_MIPI_DBI
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help
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DRM driver for the following Sitronix ST7586 panels:
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* LEGO MINDSTORMS EV3
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If M is selected the module will be called st7586.
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config TINYDRM_ST7735R
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tristate "DRM support for Sitronix ST7715R/ST7735R display panels"
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depends on DRM && SPI
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select DRM_KMS_HELPER
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select DRM_GEM_DMA_HELPER
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select DRM_MIPI_DBI
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select BACKLIGHT_CLASS_DEVICE
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help
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DRM driver for Sitronix ST7715R/ST7735R with one of the following
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LCDs:
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* Jianda JD-T18003-T01 1.8" 128x160 TFT
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* Okaya RH128128T 1.44" 128x128 TFT
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If M is selected the module will be called st7735r.
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