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drm/amdgpu/cgs: add sys info query for pcie gen and link width

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Needed by powerplay to properly handle pcie dpm switching.

Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2015-11-11 20:35:32 -05:00
parent d0dd7f0cc3
commit cfd316d59e
2 changed files with 8 additions and 0 deletions
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6
drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
View file

@ -754,6 +754,12 @@ static int amdgpu_cgs_query_system_info(void *cgs_device,
case CGS_SYSTEM_INFO_ADAPTER_BDF_ID:
sys_info->value = adev->pdev->devfn | (adev->pdev->bus->number << 8);
break;
case CGS_SYSTEM_INFO_PCIE_GEN_INFO:
sys_info->value = adev->pm.pcie_gen_mask;
break;
case CGS_SYSTEM_INFO_PCIE_MLW:
sys_info->value = adev->pm.pcie_mlw_mask;
break;
default:
return -ENODEV;
}

2
drivers/gpu/drm/amd/include/cgs_common.h
View file

@ -107,6 +107,8 @@ enum cgs_ucode_id {
enum cgs_system_info_id {
CGS_SYSTEM_INFO_ADAPTER_BDF_ID = 1,
CGS_SYSTEM_INFO_PCIE_GEN_INFO,
CGS_SYSTEM_INFO_PCIE_MLW,
CGS_SYSTEM_INFO_ID_MAXIMUM,
};