add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/devfreq/governor.h
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@@ -1,12 +1,9 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  * governor.h - internal header for devfreq governors.
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  *
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  * Copyright (C) 2011 Samsung Electronics
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  *	MyungJoo Ham <myungjoo.ham@samsung.com>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  *
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  * This header is for devfreq governors in drivers/devfreq/
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  */
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@@ -21,7 +18,7 @@
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 /* Devfreq events */
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 #define DEVFREQ_GOV_START			0x1
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 #define DEVFREQ_GOV_STOP			0x2
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-#define DEVFREQ_GOV_INTERVAL			0x3
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+#define DEVFREQ_GOV_UPDATE_INTERVAL		0x3
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 #define DEVFREQ_GOV_SUSPEND			0x4
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 #define DEVFREQ_GOV_RESUME			0x5
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@@ -33,7 +30,9 @@
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  * @node:		list node - contains registered devfreq governors
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  * @name:		Governor's name
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  * @immutable:		Immutable flag for governor. If the value is 1,
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- *			this govenror is never changeable to other governor.
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+ *			this governor is never changeable to other governor.
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+ * @interrupt_driven:	Devfreq core won't schedule polling work for this
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+ *			governor if value is set to 1.
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  * @get_target_freq:	Returns desired operating frequency for the device.
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  *			Basically, get_target_freq will run
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  *			devfreq_dev_profile.get_dev_status() to get the
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@@ -52,25 +51,22 @@
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 	const char name[DEVFREQ_NAME_LEN];
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 	const unsigned int immutable;
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+	const unsigned int interrupt_driven;
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 	int (*get_target_freq)(struct devfreq *this, unsigned long *freq);
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 	int (*event_handler)(struct devfreq *devfreq,
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 				unsigned int event, void *data);
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 };
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-/* Caution: devfreq->lock must be locked before calling update_devfreq */
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-extern int update_devfreq(struct devfreq *devfreq);
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+void devfreq_monitor_start(struct devfreq *devfreq);
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+void devfreq_monitor_stop(struct devfreq *devfreq);
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+void devfreq_monitor_suspend(struct devfreq *devfreq);
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+void devfreq_monitor_resume(struct devfreq *devfreq);
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+void devfreq_update_interval(struct devfreq *devfreq, unsigned int *delay);
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-extern void devfreq_monitor_start(struct devfreq *devfreq);
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-extern void devfreq_monitor_stop(struct devfreq *devfreq);
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-extern void devfreq_monitor_suspend(struct devfreq *devfreq);
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-extern void devfreq_monitor_resume(struct devfreq *devfreq);
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-extern void devfreq_interval_update(struct devfreq *devfreq,
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-					unsigned int *delay);
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+int devfreq_add_governor(struct devfreq_governor *governor);
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+int devfreq_remove_governor(struct devfreq_governor *governor);
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-extern int devfreq_add_governor(struct devfreq_governor *governor);
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-extern int devfreq_remove_governor(struct devfreq_governor *governor);
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-
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-extern int devfreq_update_status(struct devfreq *devfreq, unsigned long freq);
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+int devfreq_update_status(struct devfreq *devfreq, unsigned long freq);
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 static inline int devfreq_update_stats(struct devfreq *df)
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 {