drm/i915: rework IS_*_GT* macros

We can now make use of the intel_device_info.gt field.
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20170830161208.29221-4-lionel.g.landwerlin@intel.com

drivers/gpu/drm/i915/i915_drv.h

@@ -2888,9 +2888,8 @@ intel_info(const struct drm_i915_private *dev_priv)
 #define IS_G33(dev_priv)	((dev_priv)->info.platform == INTEL_G33)
 #define IS_IRONLAKE_M(dev_priv)	(INTEL_DEVID(dev_priv) == 0x0046)
 #define IS_IVYBRIDGE(dev_priv)	((dev_priv)->info.platform == INTEL_IVYBRIDGE)
-#define IS_IVB_GT1(dev_priv)	(INTEL_DEVID(dev_priv) == 0x0156 || \
-				 INTEL_DEVID(dev_priv) == 0x0152 || \
-				 INTEL_DEVID(dev_priv) == 0x015a)
+#define IS_IVB_GT1(dev_priv)	(IS_IVYBRIDGE(dev_priv) && \
+				 (dev_priv)->info.gt == 1)
 #define IS_VALLEYVIEW(dev_priv)	((dev_priv)->info.platform == INTEL_VALLEYVIEW)
 #define IS_CHERRYVIEW(dev_priv)	((dev_priv)->info.platform == INTEL_CHERRYVIEW)
 #define IS_HASWELL(dev_priv)	((dev_priv)->info.platform == INTEL_HASWELL)
@@ -2912,11 +2911,11 @@ intel_info(const struct drm_i915_private *dev_priv)
 #define IS_BDW_ULX(dev_priv)	(IS_BROADWELL(dev_priv) && \
 				 (INTEL_DEVID(dev_priv) & 0xf) == 0xe)
 #define IS_BDW_GT3(dev_priv)	(IS_BROADWELL(dev_priv) && \
-				 (INTEL_DEVID(dev_priv) & 0x00F0) == 0x0020)
+				 (dev_priv)->info.gt == 3)
 #define IS_HSW_ULT(dev_priv)	(IS_HASWELL(dev_priv) && \
 				 (INTEL_DEVID(dev_priv) & 0xFF00) == 0x0A00)
 #define IS_HSW_GT3(dev_priv)	(IS_HASWELL(dev_priv) && \
-				 (INTEL_DEVID(dev_priv) & 0x00F0) == 0x0020)
+				 (dev_priv)->info.gt == 3)
 /* ULX machines are also considered ULT. */
 #define IS_HSW_ULX(dev_priv)	(INTEL_DEVID(dev_priv) == 0x0A0E || \
 				 INTEL_DEVID(dev_priv) == 0x0A1E)
@@ -2937,15 +2936,15 @@ intel_info(const struct drm_i915_private *dev_priv)
 				 INTEL_DEVID(dev_priv) == 0x5915 || \
 				 INTEL_DEVID(dev_priv) == 0x591E)
 #define IS_SKL_GT2(dev_priv)	(IS_SKYLAKE(dev_priv) && \
-				 (INTEL_DEVID(dev_priv) & 0x00F0) == 0x0010)
+				 (dev_priv)->info.gt == 2)
 #define IS_SKL_GT3(dev_priv)	(IS_SKYLAKE(dev_priv) && \
-				 (INTEL_DEVID(dev_priv) & 0x00F0) == 0x0020)
+				 (dev_priv)->info.gt == 3)
 #define IS_SKL_GT4(dev_priv)	(IS_SKYLAKE(dev_priv) && \
-				 (INTEL_DEVID(dev_priv) & 0x00F0) == 0x0030)
+				 (dev_priv)->info.gt == 4)
 #define IS_KBL_GT2(dev_priv)	(IS_KABYLAKE(dev_priv) && \
-				 (INTEL_DEVID(dev_priv) & 0x00F0) == 0x0010)
+				 (dev_priv)->info.gt == 2)
 #define IS_KBL_GT3(dev_priv)	(IS_KABYLAKE(dev_priv) && \
-				 (INTEL_DEVID(dev_priv) & 0x00F0) == 0x0020)
+				 (dev_priv)->info.gt == 3)
 #define IS_CFL_ULT(dev_priv)	(IS_COFFEELAKE(dev_priv) && \
 				 (INTEL_DEVID(dev_priv) & 0x00F0) == 0x00A0)