From: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Date: Fri, 20 Jan 2023 11:15:28 +0200
Subject: intel_idle: add Emerald Rapids Xeon support
Git-commit: 74528edfbc664f9d2c927c4e5a44f1285598ed0f
Patch-mainline: v6.3-rc1
References: bsc#1216016

Emerald Rapids (EMR) is the next Intel Xeon processor after Sapphire
Rapids (SPR).

EMR C-states are the same as SPR C-states, and we expect that EMR
C-state characteristics (latency and target residency) will be the
same as in SPR. Therefore, add EMR support by using SPR C-states table.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Joerg Roedel <jroedel@suse.de>
---
 drivers/idle/intel_idle.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -1356,6 +1356,7 @@ static const struct x86_cpu_id intel_idl
 	X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE,		&idle_cpu_adl),
 	X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE_L,		&idle_cpu_adl_l),
 	X86_MATCH_INTEL_FAM6_MODEL(SAPPHIRERAPIDS_X,	&idle_cpu_spr),
+	X86_MATCH_INTEL_FAM6_MODEL(EMERALDRAPIDS_X,	&idle_cpu_spr),
 	X86_MATCH_INTEL_FAM6_MODEL(XEON_PHI_KNL,	&idle_cpu_knl),
 	X86_MATCH_INTEL_FAM6_MODEL(XEON_PHI_KNM,	&idle_cpu_knl),
 	X86_MATCH_INTEL_FAM6_MODEL(ATOM_GOLDMONT,	&idle_cpu_bxt),
@@ -1788,6 +1789,7 @@ static void __init intel_idle_init_cstat
 		skx_idle_state_table_update();
 		break;
 	case INTEL_FAM6_SAPPHIRERAPIDS_X:
+	case INTEL_FAM6_EMERALDRAPIDS_X:
 		spr_idle_state_table_update();
 		break;
 	case INTEL_FAM6_ALDERLAKE:
