From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/arch/powerpc/kernel/idle.c | 45 +++++++++++++++++++++++++++++----------------
1 files changed, 29 insertions(+), 16 deletions(-)
diff --git a/kernel/arch/powerpc/kernel/idle.c b/kernel/arch/powerpc/kernel/idle.c
index d7216c9..77cd4c5 100644
--- a/kernel/arch/powerpc/kernel/idle.c
+++ b/kernel/arch/powerpc/kernel/idle.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Idle daemon for PowerPC. Idle daemon will handle any action
* that needs to be taken when the system becomes idle.
@@ -12,11 +13,6 @@
* Copyright (c) 2003 Dave Engebretsen <engebret@us.ibm.com>
*
* 32-bit and 64-bit versions merged by Paul Mackerras <paulus@samba.org>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
*/
#include <linux/sched.h>
@@ -41,17 +37,9 @@
{
ppc_md.power_save = NULL;
cpuidle_disable = IDLE_POWERSAVE_OFF;
- return 0;
+ return 1;
}
__setup("powersave=off", powersave_off);
-
-#ifdef CONFIG_HOTPLUG_CPU
-void arch_cpu_idle_dead(void)
-{
- sched_preempt_enable_no_resched();
- cpu_die();
-}
-#endif
void arch_cpu_idle(void)
{
@@ -64,9 +52,9 @@
* interrupts enabled, some don't.
*/
if (irqs_disabled())
- local_irq_enable();
+ raw_local_irq_enable();
} else {
- local_irq_enable();
+ raw_local_irq_enable();
/*
* Go into low thread priority and possibly
* low power mode.
@@ -81,6 +69,31 @@
int powersave_nap;
+#ifdef CONFIG_PPC_970_NAP
+void power4_idle(void)
+{
+ if (!cpu_has_feature(CPU_FTR_CAN_NAP))
+ return;
+
+ if (!powersave_nap)
+ return;
+
+ if (!prep_irq_for_idle())
+ return;
+
+ if (cpu_has_feature(CPU_FTR_ALTIVEC))
+ asm volatile(PPC_DSSALL " ; sync" ::: "memory");
+
+ power4_idle_nap();
+
+ /*
+ * power4_idle_nap returns with interrupts enabled (soft and hard).
+ * to our caller with interrupts enabled (soft and hard). Our caller
+ * can cope with either interrupts disabled or enabled upon return.
+ */
+}
+#endif
+
#ifdef CONFIG_SYSCTL
/*
* Register the sysctl to set/clear powersave_nap.
--
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