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| author | Sathishkumar S <sathishkumar.sundararaju@amd.com> | 2021-05-26 16:06:19 +0530 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-06-01 22:55:38 -0400 |
| commit | 3fa8f89d72073206cad0a8840ce65afa239911ad (patch) | |
| tree | 27c4ca5fb354df0d694698acda314083ce482f89 /drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | |
| parent | 19a1d9350be632ac2d82573c4497318179c22af5 (diff) | |
| download | linux-3fa8f89d72073206cad0a8840ce65afa239911ad.tar.gz linux-3fa8f89d72073206cad0a8840ce65afa239911ad.tar.bz2 linux-3fa8f89d72073206cad0a8840ce65afa239911ad.zip | |
drm/amdgpu: enable smart shift on dGPU (v5)
enable smart shift on dGPU if it is part of HG system and
the platform supports ATCS method to handle power shift.
V2: avoid psc updates in baco enter and exit (Lijo)
fix alignment (Shashank)
V3: rebased on unified ATCS handling. (Alex)
V4: check for return value and warn on failed update (Shashank)
return 0 if device does not support smart shift. (Lizo)
V5: rebased on ATPX/ATCS structures global (Alex)
Signed-off-by: Sathishkumar S <sathishkumar.sundararaju@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Shashank Sharma <shashank.sharma@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c index b631316bfe5b..84a1b4bc9bb4 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c @@ -755,6 +755,55 @@ int amdgpu_acpi_power_shift_control(struct amdgpu_device *adev, } /** + * amdgpu_acpi_smart_shift_update - update dGPU device state to SBIOS + * + * @dev: drm_device pointer + * @ss_state: current smart shift event + * + * returns 0 on success, + * otherwise return error number. + */ +int amdgpu_acpi_smart_shift_update(struct drm_device *dev, enum amdgpu_ss ss_state) +{ + struct amdgpu_device *adev = drm_to_adev(dev); + int r; + + if (!amdgpu_device_supports_smart_shift(dev)) + return 0; + + switch (ss_state) { + /* SBIOS trigger “stop”, “enable” and “start” at D0, Driver Operational. + * SBIOS trigger “stop” at D3, Driver Not Operational. + * SBIOS trigger “stop” and “disable” at D0, Driver NOT operational. + */ + case AMDGPU_SS_DRV_LOAD: + r = amdgpu_acpi_power_shift_control(adev, + AMDGPU_ATCS_PSC_DEV_STATE_D0, + AMDGPU_ATCS_PSC_DRV_STATE_OPR); + break; + case AMDGPU_SS_DEV_D0: + r = amdgpu_acpi_power_shift_control(adev, + AMDGPU_ATCS_PSC_DEV_STATE_D0, + AMDGPU_ATCS_PSC_DRV_STATE_OPR); + break; + case AMDGPU_SS_DEV_D3: + r = amdgpu_acpi_power_shift_control(adev, + AMDGPU_ATCS_PSC_DEV_STATE_D3_HOT, + AMDGPU_ATCS_PSC_DRV_STATE_NOT_OPR); + break; + case AMDGPU_SS_DRV_UNLOAD: + r = amdgpu_acpi_power_shift_control(adev, + AMDGPU_ATCS_PSC_DEV_STATE_D0, + AMDGPU_ATCS_PSC_DRV_STATE_NOT_OPR); + break; + default: + return -EINVAL; + } + + return r; +} + +/** * amdgpu_acpi_event - handle notify events * * @nb: notifier block |