linux-kernel - [PATCH v3] intel_idle: Add Comet Lake support

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Date:   Tue,  3 Mar 2020 17:09:57 +0800
From:   Harry Pan <harry.pan@...el.com>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     gs0622@...il.com, Harry Pan <harry.pan@...el.com>,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>,
        Len Brown <lenb@...nel.org>, linux-pm@...r.kernel.org
Subject: [PATCH v3] intel_idle: Add Comet Lake support

Add a general C-state table in order to support Comet Lake.

Signed-off-by: Harry Pan <harry.pan@...el.com>

---

 drivers/idle/intel_idle.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index d55606608ac8..05bce595fafe 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -1067,6 +1067,11 @@ static const struct idle_cpu idle_cpu_dnv = {
 	.use_acpi = true,
 };
 
+static const struct idle_cpu idle_cpu_cml = {
+	.state_table = skl_cstates,
+	.disable_promotion_to_c1e = true,
+};
+
 static const struct x86_cpu_id intel_idle_ids[] __initconst = {
 	INTEL_CPU_FAM6(NEHALEM_EP,		idle_cpu_nhx),
 	INTEL_CPU_FAM6(NEHALEM,			idle_cpu_nehalem),
@@ -1105,6 +1110,8 @@ static const struct x86_cpu_id intel_idle_ids[] __initconst = {
 	INTEL_CPU_FAM6(ATOM_GOLDMONT_PLUS,	idle_cpu_bxt),
 	INTEL_CPU_FAM6(ATOM_GOLDMONT_D,		idle_cpu_dnv),
 	INTEL_CPU_FAM6(ATOM_TREMONT_D,		idle_cpu_dnv),
+	INTEL_CPU_FAM6(COMETLAKE_L,		idle_cpu_cml),
+	INTEL_CPU_FAM6(COMETLAKE,		idle_cpu_cml),
 	{}
 };
 
-- 
2.24.1