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Diffstat (limited to 'Documentation/gpu/amdgpu/display/index.rst')
| -rw-r--r-- | Documentation/gpu/amdgpu/display/index.rst | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/Documentation/gpu/amdgpu/display/index.rst b/Documentation/gpu/amdgpu/display/index.rst index a443866332ac..fe2ecad8df81 100644 --- a/Documentation/gpu/amdgpu/display/index.rst +++ b/Documentation/gpu/amdgpu/display/index.rst @@ -2,28 +2,27 @@ drm/amd/display - Display Core (DC) =================================== -*placeholder - general description of supported platforms, what dc is, etc.* - -Because it is partially shared with other operating systems, the Display Core -Driver is divided in two pieces. +AMD display engine is partially shared with other operating systems; for this +reason, our Display Core Driver is divided into two pieces: 1. **Display Core (DC)** contains the OS-agnostic components. Things like hardware programming and resource management are handled here. 2. **Display Manager (DM)** contains the OS-dependent components. Hooks to the amdgpu base driver and DRM are implemented here. -It doesn't help that the entire package is frequently referred to as DC. But -with the context in mind, it should be clear. +The display pipe is responsible for "scanning out" a rendered frame from the +GPU memory (also called VRAM, FrameBuffer, etc.) to a display. In other words, +it would: -When CONFIG_DRM_AMD_DC is enabled, DC will be initialized by default for -supported ASICs. To force disable, set `amdgpu.dc=0` on kernel command line. -Likewise, to force enable on unsupported ASICs, set `amdgpu.dc=1`. +1. Read frame information from memory; +2. Perform required transformation; +3. Send pixel data to sink devices. -To determine if DC is loaded, search dmesg for the following entry: +If you want to learn more about our driver details, take a look at the below +table of content: .. toctree:: display-manager.rst dc-debug.rst - -``Display Core initialized with <version number here>`` + dcn-overview.rst |