linux-kernel - [PATCH v2 3/4] ACPI: platform: Add balanced-performance platform profile

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Date:   Thu, 11 Feb 2021 21:17:02 +0100
From:   Maximilian Luz <luzmaximilian@...il.com>
To:     Hans de Goede <hdegoede@...hat.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:     Maximilian Luz <luzmaximilian@...il.com>,
        Mark Gross <mgross@...ux.intel.com>,
        Len Brown <lenb@...nel.org>,
        Mark Pearson <markpearson@...ovo.com>,
        Jiaxun Yang <jiaxun.yang@...goat.com>,
        platform-driver-x86@...r.kernel.org, linux-acpi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 3/4] ACPI: platform: Add balanced-performance platform profile

Some devices, including most Microsoft Surface devices, have a platform
profile somewhere inbetween balanced and performance. More specifically,
adding this profile allows the following mapping on Surface devices:

  Vendor Name           Platform Profile
  ------------------------------------------
  Battery Saver         low-power
  Recommended           balanced
  Better Performance    balanced-performance
  Best Performance      performance

Suggested-by: Hans de Goede <hdegoede@...hat.com>
Signed-off-by: Maximilian Luz <luzmaximilian@...il.com>
---
 .../ABI/testing/sysfs-platform_profile         | 18 +++++++++++-------
 drivers/acpi/platform_profile.c                |  1 +
 include/linux/platform_profile.h               |  1 +
 3 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/Documentation/ABI/testing/sysfs-platform_profile b/Documentation/ABI/testing/sysfs-platform_profile
index 9d6b89b66cca..dae9c8941905 100644
--- a/Documentation/ABI/testing/sysfs-platform_profile
+++ b/Documentation/ABI/testing/sysfs-platform_profile
@@ -5,13 +5,17 @@ Description:	This file contains a space-separated list of profiles supported for
 
 		Drivers must use the following standard profile-names:
 
-		============	============================================
-		low-power	Low power consumption
-		cool		Cooler operation
-		quiet		Quieter operation
-		balanced	Balance between low power consumption and performance
-		performance	High performance operation
-		============	============================================
+		====================	========================================
+		low-power		Low power consumption
+		cool			Cooler operation
+		quiet			Quieter operation
+		balanced		Balance between low power consumption
+					and performance
+		balanced-performance	Balance between performance and low
+					power consumption with a slight bias
+					towards performance
+		performance		High performance operation
+		====================	========================================
 
 		Userspace may expect drivers to offer more than one of these
 		standard profile names.
diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c
index 4a59c5993bde..dd2fbf38e414 100644
--- a/drivers/acpi/platform_profile.c
+++ b/drivers/acpi/platform_profile.c
@@ -17,6 +17,7 @@ static const char * const profile_names[] = {
 	[PLATFORM_PROFILE_COOL] = "cool",
 	[PLATFORM_PROFILE_QUIET] = "quiet",
 	[PLATFORM_PROFILE_BALANCED] = "balanced",
+	[PLATFORM_PROFILE_BALANCED_PERFORMANCE] = "balanced-performance",
 	[PLATFORM_PROFILE_PERFORMANCE] = "performance",
 };
 static_assert(ARRAY_SIZE(profile_names) == PLATFORM_PROFILE_LAST);
diff --git a/include/linux/platform_profile.h b/include/linux/platform_profile.h
index b4794027e759..a6329003aee7 100644
--- a/include/linux/platform_profile.h
+++ b/include/linux/platform_profile.h
@@ -21,6 +21,7 @@ enum platform_profile_option {
 	PLATFORM_PROFILE_COOL,
 	PLATFORM_PROFILE_QUIET,
 	PLATFORM_PROFILE_BALANCED,
+	PLATFORM_PROFILE_BALANCED_PERFORMANCE,
 	PLATFORM_PROFILE_PERFORMANCE,
 	PLATFORM_PROFILE_LAST, /*must always be last */
 };
-- 
2.30.0