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

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On Tue, Oct 25, 2016 at 9:49 AM, Christian König
<deathsimple at vodafone.de> wrote:
> Am 25.10.2016 um 15:41 schrieb 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)
>
>
> Could you add a define like we do in amdgpu_uvd.c for the firmware?
> 0x34080300 is not so easily readable if you don't know what to look for.
>
> Only nice to have, so either way patch is Reviewed-by: Christian König
> <christian.koenig at amd.com>.

Done.

Alex


>
> Regards,
> Christian.
>
>
>> +               adev->vce.num_rings = 2;
>> +
>>         r = amdgpu_vce_resume(adev);
>>         if (r)
>>                 return r;
>
>
>
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