drm/i915/tgl: Introduce Tiger Lake PCH

Add the enum additions to TGP.

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: David Weinehall <david.weinehall@intel.com>
Cc: James Ausmus <james.ausmus@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190711173115.28296-4-lucas.demarchi@intel.com

drivers/gpu/drm/i915/i915_drv.c

@@ -224,6 +224,10 @@ intel_pch_type(const struct drm_i915_private *dev_priv, unsigned short id)
 		DRM_DEBUG_KMS("Found Mule Creek Canyon PCH\n");
 		WARN_ON(!IS_ELKHARTLAKE(dev_priv));
 		return PCH_MCC;
+	case INTEL_PCH_TGP_DEVICE_ID_TYPE:
+		DRM_DEBUG_KMS("Found Tiger Lake LP PCH\n");
+		WARN_ON(!IS_TIGERLAKE(dev_priv));
+		return PCH_TGP;
 	default:
 		return PCH_NONE;
 	}

drivers/gpu/drm/i915/i915_drv.h

@@ -536,6 +536,7 @@ enum intel_pch {
 	PCH_CNP,        /* Cannon/Comet Lake PCH */
 	PCH_ICP,	/* Ice Lake PCH */
 	PCH_MCC,        /* Mule Creek Canyon PCH */
+	PCH_TGP,	/* Tiger Lake PCH */
 };
 
 #define QUIRK_LVDS_SSC_DISABLE (1<<1)
@@ -2320,6 +2321,7 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
 #define INTEL_PCH_ICP_DEVICE_ID_TYPE		0x3480
 #define INTEL_PCH_MCC_DEVICE_ID_TYPE		0x4B00
 #define INTEL_PCH_MCC2_DEVICE_ID_TYPE		0x3880
+#define INTEL_PCH_TGP_DEVICE_ID_TYPE		0xA080
 #define INTEL_PCH_P2X_DEVICE_ID_TYPE		0x7100
 #define INTEL_PCH_P3X_DEVICE_ID_TYPE		0x7000
 #define INTEL_PCH_QEMU_DEVICE_ID_TYPE		0x2900 /* qemu q35 has 2918 */
@@ -2327,6 +2329,7 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
 #define INTEL_PCH_TYPE(dev_priv) ((dev_priv)->pch_type)
 #define INTEL_PCH_ID(dev_priv) ((dev_priv)->pch_id)
 #define HAS_PCH_MCC(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_MCC)
+#define HAS_PCH_TGP(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_TGP)
 #define HAS_PCH_ICP(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_ICP)
 #define HAS_PCH_CNP(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_CNP)
 #define HAS_PCH_SPT(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_SPT)