From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/arch/arm/mach-s3c64xx/cpuidle.c | 62 ++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 kernel/arch/arm/mach-s3c64xx/cpuidle.c (limited to 'kernel/arch/arm/mach-s3c64xx/cpuidle.c') diff --git a/kernel/arch/arm/mach-s3c64xx/cpuidle.c b/kernel/arch/arm/mach-s3c64xx/cpuidle.c new file mode 100644 index 000000000..93aa8cb70 --- /dev/null +++ b/kernel/arch/arm/mach-s3c64xx/cpuidle.c @@ -0,0 +1,62 @@ +/* linux/arch/arm/mach-s3c64xx/cpuidle.c + * + * Copyright (c) 2011 Wolfson Microelectronics, plc + * Copyright (c) 2011 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include +#include +#include +#include +#include +#include + +#include + +#include + +#include "regs-sys.h" +#include "regs-syscon-power.h" + +static int s3c64xx_enter_idle(struct cpuidle_device *dev, + struct cpuidle_driver *drv, + int index) +{ + unsigned long tmp; + + /* Setup PWRCFG to enter idle mode */ + tmp = __raw_readl(S3C64XX_PWR_CFG); + tmp &= ~S3C64XX_PWRCFG_CFG_WFI_MASK; + tmp |= S3C64XX_PWRCFG_CFG_WFI_IDLE; + __raw_writel(tmp, S3C64XX_PWR_CFG); + + cpu_do_idle(); + + return index; +} + +static struct cpuidle_driver s3c64xx_cpuidle_driver = { + .name = "s3c64xx_cpuidle", + .owner = THIS_MODULE, + .states = { + { + .enter = s3c64xx_enter_idle, + .exit_latency = 1, + .target_residency = 1, + .name = "IDLE", + .desc = "System active, ARM gated", + }, + }, + .state_count = 1, +}; + +static int __init s3c64xx_init_cpuidle(void) +{ + return cpuidle_register(&s3c64xx_cpuidle_driver, NULL); +} +device_initcall(s3c64xx_init_cpuidle); -- cgit 1.2.3-korg