From: Harry Pan <harry.pan@intel.com>
To: LKML <linux-kernel@vger.kernel.org>
Cc: gs0622@gmail.com, Harry Pan <harry.pan@intel.com>,
Jacob Pan <jacob.jun.pan@linux.intel.com>,
Len Brown <lenb@kernel.org>,
linux-pm@vger.kernel.org
Subject: [PATCH v5] intel_idle: Add Comet Lake support
Date: Thu, 12 Mar 2020 17:25:20 +0800 [thread overview]
Message-ID: <20200312172457.1.I108734f38ade020c3e5da825839dca11d2a2ff87@changeid> (raw)
In-Reply-To: <20200304194312.1.I108734f38ade020c3e5da825839dca11d2a2ff87@changeid>
Add built-in idle states table for Comet Lake.
This patch also respects the exposed ACPI _CST objects in platform firmware
to disable those non-matching C-state by default, defer its enabling to the
userspace through sysfs.
Summary:
- With built-in table and without _CST table, all C-states are enabled
- With both built-in and _CST tables, matching C-states are enabled
Signed-off-by: Harry Pan <harry.pan@intel.com>
---
drivers/idle/intel_idle.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index d55606608ac8..49b385c36eea 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -1067,6 +1067,12 @@ 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,
+ .use_acpi = 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 +1111,8 @@ 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
prev parent reply other threads:[~2020-03-12 9:25 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-26 17:34 [PATCH] intel_idle: Add Comet Lake support Harry Pan
2020-02-26 21:47 ` Rafael J. Wysocki
2020-02-27 10:56 ` Rafael J. Wysocki
2020-03-03 9:09 ` [PATCH v3] " Harry Pan
2020-03-04 9:53 ` Rafael J. Wysocki
2020-03-04 11:57 ` Pan, Harry
2020-03-04 21:14 ` Rafael J. Wysocki
2020-03-09 9:02 ` Pan, Harry
2020-03-10 8:37 ` Rafael J. Wysocki
2020-03-04 11:43 ` [PATCH v4] " Harry Pan
2020-03-12 9:25 ` Harry Pan [this message]
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