diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c index 130060834b4e..b14800ac179e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: MIT /* * Copyright 2012 Advanced Micro Devices, Inc. * @@ -849,6 +850,7 @@ int amdgpu_acpi_init(struct amdgpu_device *adev) if (amdgpu_device_has_dc_support(adev)) { #if defined(CONFIG_DRM_AMD_DC) struct amdgpu_display_manager *dm = &adev->dm; + if (dm->backlight_dev[0]) atif->bd = dm->backlight_dev[0]; #endif @@ -863,6 +865,7 @@ int amdgpu_acpi_init(struct amdgpu_device *adev) if ((enc->devices & (ATOM_DEVICE_LCD_SUPPORT)) && enc->enc_priv) { struct amdgpu_encoder_atom_dig *dig = enc->enc_priv; + if (dig->bl_dev) { atif->bd = dig->bl_dev; break; @@ -919,9 +922,9 @@ static bool amdgpu_atif_pci_probe_handle(struct pci_dev *pdev) return false; status = acpi_get_handle(dhandle, "ATIF", &atif_handle); - if (ACPI_FAILURE(status)) { + if (ACPI_FAILURE(status)) return false; - } + amdgpu_acpi_priv.atif.handle = atif_handle; acpi_get_name(amdgpu_acpi_priv.atif.handle, ACPI_FULL_PATHNAME, &buffer); DRM_DEBUG_DRIVER("Found ATIF handle %s\n", acpi_method_name); @@ -954,9 +957,9 @@ static bool amdgpu_atcs_pci_probe_handle(struct pci_dev *pdev) return false; status = acpi_get_handle(dhandle, "ATCS", &atcs_handle); - if (ACPI_FAILURE(status)) { + if (ACPI_FAILURE(status)) return false; - } + amdgpu_acpi_priv.atcs.handle = atcs_handle; acpi_get_name(amdgpu_acpi_priv.atcs.handle, ACPI_FULL_PATHNAME, &buffer); DRM_DEBUG_DRIVER("Found ATCS handle %s\n", acpi_method_name); @@ -1050,6 +1053,10 @@ bool amdgpu_acpi_should_gpu_reset(struct amdgpu_device *adev) { if (adev->flags & AMD_IS_APU) return false; + + if (amdgpu_sriov_vf(adev)) + return false; + return pm_suspend_target_state != PM_SUSPEND_TO_IDLE; } @@ -1066,6 +1073,12 @@ bool amdgpu_acpi_is_s0ix_active(struct amdgpu_device *adev) (pm_suspend_target_state != PM_SUSPEND_TO_IDLE)) return false; + /* + * If ACPI_FADT_LOW_POWER_S0 is not set in the FADT, it is generally + * risky to do any special firmware-related preparations for entering + * S0ix even though the system is suspending to idle, so return false + * in that case. + */ if (!(acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0)) { dev_warn_once(adev->dev, "Power consumption will be higher as BIOS has not been configured for suspend-to-idle.\n" |