[PATCH 4/4] drm/amd/pm: add gfx_state_change_set() for rn gfx power switch

[Huang Rui]

On Fri, Nov 13, 2020 at 02:53:17PM +0800, Liang, Prike wrote:
> The gfx_state_change_set() funtion can support set GFX power
> change status to D0/D3.
> 
> Signed-off-by: Prike Liang <Prike.Liang at amd.com>

Reviewed-by: Huang Rui <ray.huang at amd.com>

> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c         | 18 +++++++++---------
>  drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h         |  2 ++
>  drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c       | 12 ++++++++++++
>  drivers/gpu/drm/amd/pm/swsmu/smu12/renoir_ppt.c |  7 +++++++
>  4 files changed, 30 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
> index 380dd3a..cd2c676 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
> @@ -828,14 +828,14 @@ int amdgpu_gfx_get_num_kcq(struct amdgpu_device *adev)
>  
>  void amdgpu_gfx_state_change_set(struct amdgpu_device *adev, enum gfx_change_state state)
>  {
> -
> -	mutex_lock(&adev->pm.mutex);
> -
> -	if (adev->powerplay.pp_funcs &&
> -	    adev->powerplay.pp_funcs->gfx_state_change_set)
> +	if (is_support_sw_smu(adev)) {
> +		smu_gfx_state_change_set(&adev->smu, state);
> +	} else {
> +		mutex_lock(&adev->pm.mutex);
> +		if (adev->powerplay.pp_funcs &&
> +		    adev->powerplay.pp_funcs->gfx_state_change_set)
>  			((adev)->powerplay.pp_funcs->gfx_state_change_set(
> -					(adev)->powerplay.pp_handle, state));
> -
> -	mutex_unlock(&adev->pm.mutex);
> -
> +				(adev)->powerplay.pp_handle, state));
> +		mutex_unlock(&adev->pm.mutex);
> +	}
>  }
> diff --git a/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
> index 9724d6f..ae8ff7b 100644
> --- a/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
> +++ b/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
> @@ -576,6 +576,7 @@ struct pptable_funcs {
>  	int (*post_init)(struct smu_context *smu);
>  	void (*interrupt_work)(struct smu_context *smu);
>  	int (*gpo_control)(struct smu_context *smu, bool enablement);
> +	int (*gfx_state_change_set)(struct smu_context *smu, uint32_t state);
>  };
>  
>  typedef enum {
> @@ -764,6 +765,7 @@ int smu_get_status_gfxoff(struct amdgpu_device *adev, uint32_t *value);
>  ssize_t smu_sys_get_gpu_metrics(struct smu_context *smu, void **table);
>  
>  int smu_enable_mgpu_fan_boost(struct smu_context *smu);
> +int smu_gfx_state_change_set(struct smu_context *smu, uint32_t state);
>  
>  #endif
>  #endif
> diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
> index 3999079..7b698c5 100644
> --- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
> +++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
> @@ -2529,3 +2529,15 @@ int smu_enable_mgpu_fan_boost(struct smu_context *smu)
>  
>  	return ret;
>  }
> +
> +int smu_gfx_state_change_set(struct smu_context *smu, uint32_t state)
> +{
> +	int ret = 0;
> +
> +	mutex_lock(&smu->mutex);
> +	if (smu->ppt_funcs->gfx_state_change_set)
> +		ret = smu->ppt_funcs->gfx_state_change_set(smu, state);
> +	mutex_unlock(&smu->mutex);
> +
> +	return ret;
> +}
> diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu12/renoir_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu12/renoir_ppt.c
> index 66c1026..46c44f0 100644
> --- a/drivers/gpu/drm/amd/pm/swsmu/smu12/renoir_ppt.c
> +++ b/drivers/gpu/drm/amd/pm/swsmu/smu12/renoir_ppt.c
> @@ -1136,6 +1136,12 @@ static ssize_t renoir_get_gpu_metrics(struct smu_context *smu,
>  	return sizeof(struct gpu_metrics_v2_0);
>  }
>  
> +static int renoir_gfx_state_change_set(struct smu_context *smu, uint32_t state)
> +{
> +
> +	return smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_GpuChangeState, state, NULL);
> +}
> +
>  static const struct pptable_funcs renoir_ppt_funcs = {
>  	.set_power_state = NULL,
>  	.print_clk_levels = renoir_print_clk_levels,
> @@ -1171,6 +1177,7 @@ static const struct pptable_funcs renoir_ppt_funcs = {
>  	.get_pp_feature_mask = smu_cmn_get_pp_feature_mask,
>  	.set_pp_feature_mask = smu_cmn_set_pp_feature_mask,
>  	.get_gpu_metrics = renoir_get_gpu_metrics,
> +	.gfx_state_change_set = renoir_gfx_state_change_set,
>  };
>  
>  void renoir_set_ppt_funcs(struct smu_context *smu)
> -- 
> 2.7.4
>