drm/amdgpu/vcn: Document IRQ per-instance irq behavior for VCN 4.0.3

Browse source

When examining the VCN function init, it is common to find a loop that
initializes VCN rings, which uses one IRQ per instance. However, VCN
4.0.3 deviates from this pattern, as it includes a distinct field to
differentiate instances, which results in a slightly different ring
init. This commit makes this difference explicit by using a fixed index
when initializing the ring buffer and also adds a comment.

Signed-off-by: Rodrigo Siqueira <siqueira@igalia.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Rodrigo Siqueira 2025-08-24 18:46:40 -06:00 • committed by Alex Deucher

parent 8b38bf3883

commit 3d9752f4f9

1 changed files with 5 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

6

drivers/gpu/drm/amd/amdgpu/vcn_v4_0_3.c

View file