From 871480933a1c28f8a9fed4c4d34d06c439a7a422 Mon Sep 17 00:00:00 2001 From: Srikant Patnaik Date: Sun, 11 Jan 2015 12:28:04 +0530 Subject: Moved, renamed, and deleted files The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure. --- arch/arm/mach-s3c24xx/pm-s3c2416.c | 83 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 arch/arm/mach-s3c24xx/pm-s3c2416.c (limited to 'arch/arm/mach-s3c24xx/pm-s3c2416.c') diff --git a/arch/arm/mach-s3c24xx/pm-s3c2416.c b/arch/arm/mach-s3c24xx/pm-s3c2416.c new file mode 100644 index 00000000..1bd4817b --- /dev/null +++ b/arch/arm/mach-s3c24xx/pm-s3c2416.c @@ -0,0 +1,83 @@ +/* linux/arch/arm/mach-s3c2416/pm.c + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * S3C2416 - PM support (Based on Ben Dooks' S3C2412 PM support) + * + * 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 + +extern void s3c2412_sleep_enter(void); + +static int s3c2416_cpu_suspend(unsigned long arg) +{ + /* enable wakeup sources regardless of battery state */ + __raw_writel(S3C2443_PWRCFG_SLEEP, S3C2443_PWRCFG); + + /* set the mode as sleep, 2BED represents "Go to BED" */ + __raw_writel(0x2BED, S3C2443_PWRMODE); + + s3c2412_sleep_enter(); + + panic("sleep resumed to originator?"); +} + +static void s3c2416_pm_prepare(void) +{ + /* + * write the magic value u-boot uses to check for resume into + * the INFORM0 register, and ensure INFORM1 is set to the + * correct address to resume from. + */ + __raw_writel(0x2BED, S3C2412_INFORM0); + __raw_writel(virt_to_phys(s3c_cpu_resume), S3C2412_INFORM1); +} + +static int s3c2416_pm_add(struct device *dev, struct subsys_interface *sif) +{ + pm_cpu_prep = s3c2416_pm_prepare; + pm_cpu_sleep = s3c2416_cpu_suspend; + + return 0; +} + +static struct subsys_interface s3c2416_pm_interface = { + .name = "s3c2416_pm", + .subsys = &s3c2416_subsys, + .add_dev = s3c2416_pm_add, +}; + +static __init int s3c2416_pm_init(void) +{ + return subsys_interface_register(&s3c2416_pm_interface); +} + +arch_initcall(s3c2416_pm_init); + + +static void s3c2416_pm_resume(void) +{ + /* unset the return-from-sleep amd inform flags */ + __raw_writel(0x0, S3C2443_PWRMODE); + __raw_writel(0x0, S3C2412_INFORM0); + __raw_writel(0x0, S3C2412_INFORM1); +} + +struct syscore_ops s3c2416_pm_syscore_ops = { + .resume = s3c2416_pm_resume, +}; -- cgit