| Leo Li | b8592b4 | 2018-09-14 11:20:08 -0400 | [diff] [blame] | 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** |