lkml.org 
[lkml]   [2020]   [Mar]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v5] intel_idle: Add Comet Lake support
Date
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
\
 
 \ /
  Last update: 2020-03-12 10:26    [W:0.112 / U:1.220 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site