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68 lines
2.0 KiB
68 lines
2.0 KiB
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drm/amd/display - Display Core (DC) |
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*placeholder - general description of supported platforms, what dc is, etc.* |
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Because it is partially shared with other operating systems, the Display Core |
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Driver is divided in two pieces. |
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1. **Display Core (DC)** contains the OS-agnostic components. Things like |
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hardware programming and resource management are handled here. |
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2. **Display Manager (DM)** contains the OS-dependent components. Hooks to the |
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amdgpu base driver and DRM are implemented here. |
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It doesn't help that the entire package is frequently referred to as DC. But |
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with the context in mind, it should be clear. |
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When CONFIG_DRM_AMD_DC is enabled, DC will be initialized by default for |
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supported ASICs. To force disable, set `amdgpu.dc=0` on kernel command line. |
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Likewise, to force enable on unsupported ASICs, set `amdgpu.dc=1`. |
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To determine if DC is loaded, search dmesg for the following entry: |
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``Display Core initialized with <version number here>`` |
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AMDgpu Display Manager |
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====================== |
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.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c |
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:doc: overview |
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.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h |
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:internal: |
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Lifecycle |
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--------- |
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.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c |
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:doc: DM Lifecycle |
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.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c |
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:functions: dm_hw_init dm_hw_fini |
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Interrupts |
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---------- |
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.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c |
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:doc: overview |
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.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c |
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:internal: |
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.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c |
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:functions: register_hpd_handlers dm_crtc_high_irq dm_pflip_high_irq |
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Atomic Implementation |
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--------------------- |
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.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c |
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:doc: atomic |
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.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c |
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:functions: amdgpu_dm_atomic_check amdgpu_dm_atomic_commit_tail |
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Display Core |
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============ |
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**WIP**
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