projects / thirdparty / kernel / stable.git / blame
| Commit | Line | Data |
|---|---|---|
| b8592b48 LL |
1 | =================================== |
| 2 | drm/amd/display - Display Core (DC) | |
| 3 | =================================== | |
| 4 | ||
| 5 | *placeholder - general description of supported platforms, what dc is, etc.* | |
| 6 | ||
| 7 | Because it is partially shared with other operating systems, the Display Core | |
| 8 | Driver is divided in two pieces. | |
| 9 | ||
| 10 | 1. **Display Core (DC)** contains the OS-agnostic components. Things like | |
| 11 | hardware programming and resource management are handled here. | |
| 12 | 2. **Display Manager (DM)** contains the OS-dependent components. Hooks to the | |
| 13 | amdgpu base driver and DRM are implemented here. | |
| 14 | ||
| 15 | It doesn't help that the entire package is frequently referred to as DC. But | |
| 16 | with the context in mind, it should be clear. | |
| 17 | ||
| 18 | When CONFIG_DRM_AMD_DC is enabled, DC will be initialized by default for | |
| 19 | supported ASICs. To force disable, set `amdgpu.dc=0` on kernel command line. | |
| 20 | Likewise, to force enable on unsupported ASICs, set `amdgpu.dc=1`. | |
| 21 | ||
| 22 | To determine if DC is loaded, search dmesg for the following entry: | |
| 23 | ||
| 24 | ``Display Core initialized with <version number here>`` | |
| 25 | ||
| 26 | AMDgpu Display Manager | |
| 27 | ====================== | |
| 28 | ||
| 29 | .. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | |
| 30 | :doc: overview | |
| 31 | ||
| 32 | .. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | |
| 33 | :internal: | |
| 34 | ||
| 35 | Lifecycle | |
| 36 | --------- | |
| 37 | ||
| 38 | .. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | |
| 39 | :doc: DM Lifecycle | |
| 40 | ||
| 41 | .. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | |
| 42 | :functions: dm_hw_init dm_hw_fini | |
| 43 | ||
| 44 | Interrupts | |
| 45 | ---------- | |
| 46 | ||
| 47 | .. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c | |
| 48 | :doc: overview | |
| 49 | ||
| 50 | .. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c | |
| 51 | :internal: | |
| 52 | ||
| 53 | .. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | |
| 54 | :functions: register_hpd_handlers dm_crtc_high_irq dm_pflip_high_irq | |
| 55 | ||
| 56 | Atomic Implementation | |
| 57 | --------------------- | |
| 58 | ||
| 59 | .. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | |
| 60 | :doc: atomic | |
| 61 | ||
| 62 | .. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | |
| 63 | :functions: amdgpu_dm_atomic_check amdgpu_dm_atomic_commit_tail | |
| 64 | ||
| 65 | Display Core | |
| 66 | ============ | |
| 67 | ||
| 68 | **WIP** |