Re: [PATCH 1/2] drm/amdgpu: remove power on/off SDMA in SMU hw_init/fini()

[Lang Yu <Lang.Yu@amd.com>]

On 12/08/ , Wang, Yang(Kevin) wrote:
>    [AMD Official Use Only]
> 
>    Hi Lang,
>    the function of smu_powergate_sdma() is only valid on renoir chip.
>    if you want to remove it, please also remove following callback pointer
>    in struct pptable_funcs{}.
>    related macro definitions also need to be cleaned up.
>    int (*powergate_sdma)(struct smu_context *smu, bool gate);

     It will be still called by amdgpu_dpm_set_powergating_by_smu()
     in sdma_v4_0_hw_init/fini().
	
     Regards,
     Lang

>    Best Regards,
>    Kevin
>      __________________________________________________________________
> 
>    From: amd-gfx <amd-gfx-bounces@lists.freedesktop.org> on behalf of Lang
>    Yu <lang.yu@amd.com>
>    Sent: Wednesday, December 8, 2021 5:26 PM
>    To: amd-gfx@lists.freedesktop.org <amd-gfx@lists.freedesktop.org>
>    Cc: Deucher, Alexander <Alexander.Deucher@amd.com>; Yu, Lang
>    <Lang.Yu@amd.com>; Lazar, Lijo <Lijo.Lazar@amd.com>; Huang, Ray
>    <Ray.Huang@amd.com>
>    Subject: [PATCH 1/2] drm/amdgpu: remove power on/off SDMA in SMU
>    hw_init/fini()
> 
>    Currently, we don't find some neccesities to power on/off
>    SDMA in SMU hw_init/fini(). It makes more sense in SDMA
>    hw_init/fini().
>    Signed-off-by: Lang Yu <lang.yu@amd.com>
>    ---
>     drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 5 -----
>     1 file changed, 5 deletions(-)
>    diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
>    b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
>    index 5839918cb574..2d718c30c8eb 100644
>    --- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
>    +++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
>    @@ -1350,7 +1350,6 @@ static int smu_hw_init(void *handle)
>             }
> 
>             if (smu->is_apu) {
>    -               smu_powergate_sdma(&adev->smu, false);
>                     smu_dpm_set_vcn_enable(smu, true);
>                     smu_dpm_set_jpeg_enable(smu, true);
>                     smu_set_gfx_cgpg(&adev->smu, true);
>    @@ -1512,10 +1511,6 @@ static int smu_hw_fini(void *handle)
>             if (amdgpu_sriov_vf(adev)&& !amdgpu_sriov_is_pp_one_vf(adev))
>                     return 0;
> 
>    -       if (smu->is_apu) {
>    -               smu_powergate_sdma(&adev->smu, true);
>    -       }
>    -
>             smu_dpm_set_vcn_enable(smu, false);
>             smu_dpm_set_jpeg_enable(smu, false);
> 
>    --
>    2.25.1