[PATCH] drm/amdgpu/vce3: only enable 3 rings on new enough firmware

[Alex Deucher]

Older firmware versions don't support 3 rings.

fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=98016

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/vce_v3_0.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/vce_v3_0.c b/drivers/gpu/drm/amd/amdgpu/vce_v3_0.c
index 5ed2930..55cfc53 100644
--- a/drivers/gpu/drm/amd/amdgpu/vce_v3_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/vce_v3_0.c
@@ -382,6 +382,10 @@ static int vce_v3_0_sw_init(void *handle)
 	if (r)
 		return r;
 
+	/* 52.8.3 required for 3 ring support */
+	if (adev->vce.fw_version < 0x34080300)
+		adev->vce.num_rings = 2;
+
 	r = amdgpu_vce_resume(adev);
 	if (r)
 		return r;
-- 
2.5.5