drm/radeon/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>

diff --git a/drivers/gpu/drm/radeon/radeon_atpx_handler.c b/drivers/gpu/drm/radeon/radeon_atpx_handler.c
index 6996b31..de17b5e 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_atpx_handler.c
+++ b/drivers/gpu/drm/radeon/radeon_atpx_handler.c
@@ -28,6 +28,7 @@ struct radeon_atpx_functions {
 struct radeon_atpx {
        acpi_handle handle;
        struct radeon_atpx_functions functions;
+       bool is_hybrid;
 };
 
 static struct radeon_atpx_priv {
@@ -67,6 +68,10 @@ bool radeon_has_atpx_dgpu_power_cntl(void) {
        return radeon_atpx_priv.atpx.functions.power_cntl;
 }
 
+bool radeon_is_atpx_hybrid(void) {
+       return radeon_atpx_priv.atpx.is_hybrid;
+}
+
 /**
  * radeon_atpx_call - call an ATPX method
  *
@@ -190,9 +195,11 @@ static int radeon_atpx_validate(struct radeon_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;

diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index 601eae8..1ef9ab3 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -164,10 +164,12 @@ void radeon_debugfs_cleanup(struct drm_minor *minor);
 void radeon_register_atpx_handler(void);
 void radeon_unregister_atpx_handler(void);
 bool radeon_has_atpx_dgpu_power_cntl(void);
+bool radeon_is_atpx_hybrid(void);
 #else
 static inline void radeon_register_atpx_handler(void) {}
 static inline void radeon_unregister_atpx_handler(void) {}
 static inline bool radeon_has_atpx_dgpu_power_cntl(void) { return false; }
+static inline bool radeon_is_atpx_hybrid(void) { return false; }
 #endif
 
 int radeon_no_wb;