[PATCH 1/6] drm/amdgpu/atpx: track whether if this is a hybrid graphics platform

[Christian König]

Am 02.06.2016 um 15:33 schrieb Alex Deucher:
> hybrid graphics in this case refers to systems which use the new
> platform d3 cold ACPI methods as opposed to ATPX for dGPU power
> control.
>
> Signed-off-by: Alex Deucher <alexander.deucher at amd.com>

Acked-by: Christian König <christian.koenig at amd.com>

I'm wondering if I should get deeper into this?

Regards,
Christian.

> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu.h              | 2 ++
>   drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c | 9 ++++++++-
>   2 files changed, 10 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> index 19d15dc..c6b5ce3 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> @@ -2394,10 +2394,12 @@ bool amdgpu_device_is_px(struct drm_device *dev);
>   void amdgpu_register_atpx_handler(void);
>   void amdgpu_unregister_atpx_handler(void);
>   bool amdgpu_has_atpx_dgpu_power_cntl(void);
> +bool amdgpu_is_atpx_hybrid(void);
>   #else
>   static inline void amdgpu_register_atpx_handler(void) {}
>   static inline void amdgpu_unregister_atpx_handler(void) {}
>   static inline bool amdgpu_has_atpx_dgpu_power_cntl(void) { return false; }
> +static inline bool amdgpu_is_atpx_hybrid(void) { return false; }
>   #endif
>   
>   /*
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c
> index 90dfedc..3e973c7 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c
> @@ -28,6 +28,7 @@ struct amdgpu_atpx_functions {
>   struct amdgpu_atpx {
>   	acpi_handle handle;
>   	struct amdgpu_atpx_functions functions;
> +	bool is_hybrid;
>   };
>   
>   static struct amdgpu_atpx_priv {
> @@ -68,6 +69,10 @@ bool amdgpu_has_atpx_dgpu_power_cntl(void) {
>   	return amdgpu_atpx_priv.atpx.functions.power_cntl;
>   }
>   
> +bool amdgpu_is_atpx_hybrid(void) {
> +	return amdgpu_atpx_priv.atpx.is_hybrid;
> +}
> +
>   /**
>    * amdgpu_atpx_call - call an ATPX method
>    *
> @@ -192,9 +197,11 @@ static int amdgpu_atpx_validate(struct amdgpu_atpx *atpx)
>   			  ATPX_DYNAMIC_DGPU_POWER_OFF_SUPPORTED))
>   		atpx->functions.power_cntl = true;
>   
> +	atpx->is_hybrid = false;
>   	if (valid_bits & ATPX_MS_HYBRID_GFX_SUPPORTED) {
> -		printk("Hybrid Graphics, ATPX dGPU power cntl disabled\n");
> +		printk("ATPX Hybrid Graphics\n");
>   		atpx->functions.power_cntl = false;
> +		atpx->is_hybrid = true;
>   	}
>   
>   	return 0;