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authorMark Pearson <markpearson@lenovo.com>2020-12-30 03:18:26 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2020-12-30 20:34:53 +0300
commita2ff95e018f1d2bc816f3078d5110a655e355f18 (patch)
tree9e4523ed3a2e604f7750f9a3e6c8d952afc57597 /include/linux/platform_profile.h
parent8e0cbf356377fabac47a027dd176cd1cacc5fc01 (diff)
downloadlinux-a2ff95e018f1d2bc816f3078d5110a655e355f18.tar.xz
ACPI: platform: Add platform profile support
This is the initial implementation of the platform-profile feature. It provides the details discussed and outlined in the sysfs-platform_profile document. Many modern systems have the ability to modify the operating profile to control aspects like fan speed, temperature and power levels. This module provides a common sysfs interface that platform modules can register against to control their individual profile options. Signed-off-by: Mark Pearson <markpearson@lenovo.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> [ rjw: Use full words in enum values names ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/platform_profile.h')
-rw-r--r--include/linux/platform_profile.h39
1 files changed, 39 insertions, 0 deletions
diff --git a/include/linux/platform_profile.h b/include/linux/platform_profile.h
new file mode 100644
index 000000000000..3623d7108421
--- /dev/null
+++ b/include/linux/platform_profile.h
@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Platform profile sysfs interface
+ *
+ * See Documentation/ABI/testing/sysfs-platform_profile.rst for more
+ * information.
+ */
+
+#ifndef _PLATFORM_PROFILE_H_
+#define _PLATFORM_PROFILE_H_
+
+#include <linux/bitops.h>
+
+/*
+ * If more options are added please update profile_names
+ * array in platform-profile.c and sysfs-platform-profile.rst
+ * documentation.
+ */
+
+enum platform_profile_option {
+ PLATFORM_PROFILE_LOW_POWER,
+ PLATFORM_PROFILE_COOL,
+ PLATFORM_PROFILE_QUIET,
+ PLATFORM_PROFILE_BALANCED,
+ PLATFORM_PROFILE_PERFORMANCE,
+ PLATFORM_PROFILE_LAST, /*must always be last */
+};
+
+struct platform_profile_handler {
+ unsigned long choices[BITS_TO_LONGS(PLATFORM_PROFILE_LAST)];
+ int (*profile_get)(enum platform_profile_option *profile);
+ int (*profile_set)(enum platform_profile_option profile);
+};
+
+int platform_profile_register(const struct platform_profile_handler *pprof);
+int platform_profile_remove(void);
+void platform_profile_notify(void);
+
+#endif /*_PLATFORM_PROFILE_H_*/