JFIF$        dd7 

Viewing File: /usr/src/kernels/5.14.0-570.32.1.el9_6.x86_64/include/linux/cpu_pm.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2011 Google, Inc.
 *
 * Author:
 *	Colin Cross <ccross@android.com>
 */

#ifndef _LINUX_CPU_PM_H
#define _LINUX_CPU_PM_H

#include <linux/kernel.h>
#include <linux/notifier.h>

/*
 * When a CPU goes to a low power state that turns off power to the CPU's
 * power domain, the contents of some blocks (floating point coprocessors,
 * interrupt controllers, caches, timers) in the same power domain can
 * be lost.  The cpm_pm notifiers provide a method for platform idle, suspend,
 * and hotplug implementations to notify the drivers for these blocks that
 * they may be reset.
 *
 * All cpu_pm notifications must be called with interrupts disabled.
 *
 * The notifications are split into two classes: CPU notifications and CPU
 * cluster notifications.
 *
 * CPU notifications apply to a single CPU and must be called on the affected
 * CPU.  They are used to save per-cpu context for affected blocks.
 *
 * CPU cluster notifications apply to all CPUs in a single power domain. They
 * are used to save any global context for affected blocks, and must be called
 * after all the CPUs in the power domain have been notified of the low power
 * state.
 */

/*
 * Event codes passed as unsigned long val to notifier calls
 */
enum cpu_pm_event {
	/* A single cpu is entering a low power state */
	CPU_PM_ENTER,

	/* A single cpu failed to enter a low power state */
	CPU_PM_ENTER_FAILED,

	/* A single cpu is exiting a low power state */
	CPU_PM_EXIT,

	/* A cpu power domain is entering a low power state */
	CPU_CLUSTER_PM_ENTER,

	/* A cpu power domain failed to enter a low power state */
	CPU_CLUSTER_PM_ENTER_FAILED,

	/* A cpu power domain is exiting a low power state */
	CPU_CLUSTER_PM_EXIT,
};

#ifdef CONFIG_CPU_PM
int cpu_pm_register_notifier(struct notifier_block *nb);
int cpu_pm_unregister_notifier(struct notifier_block *nb);
int cpu_pm_enter(void);
int cpu_pm_exit(void);
int cpu_cluster_pm_enter(void);
int cpu_cluster_pm_exit(void);

#else

static inline int cpu_pm_register_notifier(struct notifier_block *nb)
{
	return 0;
}

static inline int cpu_pm_unregister_notifier(struct notifier_block *nb)
{
	return 0;
}

static inline int cpu_pm_enter(void)
{
	return 0;
}

static inline int cpu_pm_exit(void)
{
	return 0;
}

static inline int cpu_cluster_pm_enter(void)
{
	return 0;
}

static inline int cpu_cluster_pm_exit(void)
{
	return 0;
}
#endif
#endif
Back to Directory  nL+D550H?Mx ,D"v]qv;6*Zqn)ZP0!1 A "#a$2Qr D8 a Ri[f\mIykIw0cuFcRı?lO7к_f˓[C$殷WF<_W ԣsKcëIzyQy/_LKℂ;C",pFA:/]=H  ~,ls/9ć:[=/#f;)x{ٛEQ )~ =𘙲r*2~ a _V=' kumFD}KYYC)({ *g&f`툪ry`=^cJ.I](*`wq1dđ#̩͑0;H]u搂@:~וKL Nsh}OIR*8:2 !lDJVo(3=M(zȰ+i*NAr6KnSl)!JJӁ* %݉?|D}d5:eP0R;{$X'xF@.ÊB {,WJuQɲRI;9QE琯62fT.DUJ;*cP A\ILNj!J۱+O\͔]ޒS߼Jȧc%ANolՎprULZԛerE2=XDXgVQeӓk yP7U*omQIs,K`)6\G3t?pgjrmۛجwluGtfh9uyP0D;Uڽ"OXlif$)&|ML0Zrm1[HXPlPR0'G=i2N+0e2]]9VTPO׮7h(F*癈'=QVZDF,d߬~TX G[`le69CR(!S2!P <0x<!1AQ "Raq02Br#SCTb ?Ζ"]mH5WR7k.ۛ!}Q~+yԏz|@T20S~Kek *zFf^2X*(@8r?CIuI|֓>^ExLgNUY+{.RѪ τV׸YTD I62'8Y27'\TP.6d&˦@Vqi|8-OΕ]ʔ U=TL8=;6c| !qfF3aů&~$l}'NWUs$Uk^SV:U# 6w++s&r+nڐ{@29 gL u"TÙM=6(^"7r}=6YݾlCuhquympǦ GjhsǜNlɻ}o7#S6aw4!OSrD57%|?x>L |/nD6?/8w#[)L7+6〼T ATg!%5MmZ/c-{1_Je"|^$'O&ޱմTrb$w)R$& N1EtdU3Uȉ1pM"N*(DNyd96.(jQ)X 5cQɎMyW?Q*!R>6=7)Xj5`J]e8%t!+'!1Q5 !1 AQaqё#2"0BRb?Gt^## .llQT $v,,m㵜5ubV =sY+@d{N! dnO<.-B;_wJt6;QJd.Qc%p{ 1,sNDdFHI0ГoXшe黅XۢF:)[FGXƹ/w_cMeD,ʡcc.WDtA$j@:) -# u c1<@ۗ9F)KJ-hpP]_x[qBlbpʖw q"LFGdƶ*s+ډ_Zc"?%t[IP 6J]#=ɺVvvCGsGh1 >)6|ey?Lӣm,4GWUi`]uJVoVDG< SB6ϏQ@ TiUlyOU0kfV~~}SZ@*WUUi##; s/[=!7}"WN]'(L! ~y5g9T̅JkbM' +s:S +B)v@Mj e Cf jE 0Y\QnzG1д~Wo{T9?`Rmyhsy3!HAD]mc1~2LSu7xT;j$`}4->L#vzŏILS ֭T{rjGKC;bpU=-`BsK.SFw4Mq]ZdHS0)tLg