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drm/amd/pm: hide pp_table sysfs on APUs

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APUs use firmware-owned DPM tables and do not support replacement through
pp_table. Generic callbacks can nevertheless expose the sysfs file and
accept an upload before resetting the power management stack.

Treat pp_table as unsupported on APUs. Use the same platform check in the
get and set paths to hide the file and reject uploads.

Fixes: 289921b03f ("drm/amd/powerplay: implement sysfs of pp_table for smu11 (v2)")
Signed-off-by: Yang Wang <kevinyang.wang@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Reviewed-by: Asad Kamal <asad.kamal@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 74f28db2db)
Cc: stable@vger.kernel.org
This commit is contained in:
Yang Wang 2026-07-29 15:56:46 +08:00 committed by Alex Deucher
parent 114b42507b
commit a65f5179d3
1 changed files with 11 additions and 2 deletions
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13
drivers/gpu/drm/amd/pm/amdgpu_dpm.c
View File

@ -1183,6 +1183,13 @@ int amdgpu_dpm_dispatch_task(struct amdgpu_device *adev,
return ret;
}
static bool amdgpu_dpm_is_pp_table_allowed(struct amdgpu_device *adev)
{
return !amdgpu_sriov_vf(adev) &&
!(adev->flags & AMD_IS_APU) &&
!adev->scpm_enabled;
}
int amdgpu_dpm_get_pp_table(struct amdgpu_device *adev, char *table,
size_t size)
{
@ -1193,7 +1200,8 @@ int amdgpu_dpm_get_pp_table(struct amdgpu_device *adev, char *table,
if ((!table && size) || (table && !size))
return -EINVAL;
if (amdgpu_sriov_vf(adev) || !pp_funcs->get_pp_table || adev->scpm_enabled)
if (!amdgpu_dpm_is_pp_table_allowed(adev) ||
!pp_funcs->get_pp_table)
return -EOPNOTSUPP;
mutex_lock(&adev->pm.mutex);
@ -1717,7 +1725,8 @@ int amdgpu_dpm_set_pp_table(struct amdgpu_device *adev,
if (!buf || !size)
return -EINVAL;
if (amdgpu_sriov_vf(adev) || !pp_funcs->set_pp_table || adev->scpm_enabled)
if (!amdgpu_dpm_is_pp_table_allowed(adev) ||
!pp_funcs->set_pp_table)
return -EOPNOTSUPP;
mutex_lock(&adev->pm.mutex);