drm/amdgpu: Check vcn state before profile switch

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[ Upstream commit 9c0442286f ]

The patch uses power state of VCN instances for requesting video
profile.

In idle worker of a vcn instance, when there is no outstanding
submisssion or fence, the instance is put to power gated state. When
all instances are powered off that means video profile is no longer
required. A request is made to turn off video profile.

A job submission starts with begin_use of ring, and at that time
vcn instance state is changed to power on. Subsequently a check is
made for active video profile, and if not active, a request is made.

Fixes: 3b669df92c ("drm/amdgpu/vcn: adjust workload profile handling")
Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Sathishkumar S <sathishkumar.sundararaju@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Lijo Lazar 2025-08-14 13:52:50 +05:30 • committed by Greg Kroah-Hartman

parent 374a2b1302

commit b39dd76f11

3 changed files with 56 additions and 54 deletions

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80

drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c

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3

drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h

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27

drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c

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