drm/amdgpu: Add GFX Fine Grain Clock Gating flag

Add AMD_CG_SUPPORT_GFX_FGCG for FGCG
Signed-off-by: Jinzhou.Su <Jinzhou.Su@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/include/amd_shared.h

@@ -144,6 +144,7 @@ enum amd_powergating_state {
 #define AMD_CG_SUPPORT_ATHUB_LS			(1 << 28)
 #define AMD_CG_SUPPORT_ATHUB_MGCG		(1 << 29)
 #define AMD_CG_SUPPORT_JPEG_MGCG		(1 << 30)
+#define AMD_CG_SUPPORT_GFX_FGCG			(1 << 31)
 /* PG flags */
 #define AMD_PG_SUPPORT_GFX_PG			(1 << 0)
 #define AMD_PG_SUPPORT_GFX_SMG			(1 << 1)

drivers/gpu/drm/amd/pm/amdgpu_pm.c

@@ -39,6 +39,7 @@
 #include "hwmgr.h"
 
 static const struct cg_flag_name clocks[] = {
+	{AMD_CG_SUPPORT_GFX_FGCG, "Graphics Fine Grain Clock Gating"},
 	{AMD_CG_SUPPORT_GFX_MGCG, "Graphics Medium Grain Clock Gating"},
 	{AMD_CG_SUPPORT_GFX_MGLS, "Graphics Medium Grain memory Light Sleep"},
 	{AMD_CG_SUPPORT_GFX_CGCG, "Graphics Coarse Grain Clock Gating"},