drm/i915/display: support ddr5 mem types

Add DDR5 and LPDDR5 return values from punit fw.

BSPEC: 54023
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Clint Taylor <clinton.a.taylor@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210204200458.21875-1-clinton.a.taylor@intel.com

drivers/gpu/drm/i915/display/intel_bw.c

@@ -78,7 +78,17 @@ static int icl_get_qgv_points(struct drm_i915_private *dev_priv,
 	qi->num_points = dram_info->num_qgv_points;
 
 	if (IS_GEN(dev_priv, 12))
-		qi->t_bl = dev_priv->dram_info.type == INTEL_DRAM_DDR4 ? 4 : 16;
+		switch (dram_info->type) {
+		case INTEL_DRAM_DDR4:
+			qi->t_bl = 4;
+			break;
+		case INTEL_DRAM_DDR5:
+			qi->t_bl = 8;
+			break;
+		default:
+			qi->t_bl = 16;
+			break;
+		}
 	else if (IS_GEN(dev_priv, 11))
 		qi->t_bl = dev_priv->dram_info.type == INTEL_DRAM_DDR4 ? 4 : 8;
 

drivers/gpu/drm/i915/i915_drv.h

@@ -1133,7 +1133,9 @@ struct drm_i915_private {
 			INTEL_DRAM_DDR3,
 			INTEL_DRAM_DDR4,
 			INTEL_DRAM_LPDDR3,
-			INTEL_DRAM_LPDDR4
+			INTEL_DRAM_LPDDR4,
+			INTEL_DRAM_DDR5,
+			INTEL_DRAM_LPDDR5,
 		} type;
 		u8 num_qgv_points;
 	} dram_info;

drivers/gpu/drm/i915/intel_dram.c

@@ -427,6 +427,12 @@ static int icl_pcode_read_mem_global_info(struct drm_i915_private *dev_priv)
 		case 0:
 			dram_info->type = INTEL_DRAM_DDR4;
 			break;
+		case 1:
+			dram_info->type = INTEL_DRAM_DDR5;
+			break;
+		case 2:
+			dram_info->type = INTEL_DRAM_LPDDR5;
+			break;
 		case 3:
 			dram_info->type = INTEL_DRAM_LPDDR4;
 			break;