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drm/amdgpu/atpx: track whether if this is a hybrid graphics platform 

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.

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2016-06-02 09:04:01 -04:00
parent 410ca8d13b
commit 2f5af82eea
2 changed files with 10 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View File

@ -2401,10 +2401,12 @@ 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
/*

9
drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c
View File

@ -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;