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drm/amd: Don't allow s0ix on APUs older than Raven

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APUs before Raven didn't support s0ix.  As we just relieved some
of the safety checks for s0ix to improve power consumption on
APUs that support it but that are missing BIOS support a new
blind spot was introduced that a user could "try" to run s0ix.

Plug this hole so that if users try to run s0ix on anything older
than Raven it will just skip suspend of the GPU.

Fixes: cf488dcd0a ("drm/amd: Allow s0ix without BIOS support")
Suggested-by: Alexander Deucher <Alexander.Deucher@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Mario Limonciello 2023-02-13 15:10:30 -06:00 committed by Alex Deucher
parent f9c35f4fff
commit ca47518663
2 changed files with 9 additions and 1 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
View file

@ -1073,6 +1073,9 @@ bool amdgpu_acpi_is_s0ix_active(struct amdgpu_device *adev)
(pm_suspend_target_state != PM_SUSPEND_TO_IDLE))
return false;
if (adev->asic_type < CHIP_RAVEN)
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

7
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
View file

@ -2414,8 +2414,10 @@ static int amdgpu_pmops_suspend(struct device *dev)
if (amdgpu_acpi_is_s0ix_active(adev))
adev->in_s0ix = true;
else
else if (amdgpu_acpi_is_s3_active(adev))
adev->in_s3 = true;
if (!adev->in_s0ix && !adev->in_s3)
return 0;
return amdgpu_device_suspend(drm_dev, true);
}
@ -2436,6 +2438,9 @@ static int amdgpu_pmops_resume(struct device *dev)
struct amdgpu_device *adev = drm_to_adev(drm_dev);
int r;
if (!adev->in_s0ix && !adev->in_s3)
return 0;
/* Avoids registers access if device is physically gone */
if (!pci_device_is_present(adev->pdev))
adev->no_hw_access = true;