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/* linux/arch/arm/mach-exynos/sysreg.c
*
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
* MyungJoo Ham <myungjoo.ham@samsung.com>
*
* EXYNOS - System Register PM Support Driver
*
* Currently support Exynos4210, 4212, 4412.
*
* 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 <linux/syscore_ops.h>
#include <plat/cpu.h>
#include <plat/map-base.h>
#include <plat/pm.h>
#ifdef CONFIG_PM_SLEEP
static struct sleep_save exynos4210_sysreg_save[] = {
SAVE_ITEM(S3C_VA_SYS + 0x210),
SAVE_ITEM(S3C_VA_SYS + 0x214),
SAVE_ITEM(S3C_VA_SYS + 0x218),
SAVE_ITEM(S3C_VA_SYS + 0x220),
SAVE_ITEM(S3C_VA_SYS + 0x230),
};
static struct sleep_save exynos4x12_sysreg_save[] = {
SAVE_ITEM(S3C_VA_SYS + 0x10C),
SAVE_ITEM(S3C_VA_SYS + 0x110),
SAVE_ITEM(S3C_VA_SYS + 0x114),
SAVE_ITEM(S3C_VA_SYS + 0x20C),
SAVE_ITEM(S3C_VA_SYS + 0x210),
SAVE_ITEM(S3C_VA_SYS + 0x214),
SAVE_ITEM(S3C_VA_SYS + 0x218),
SAVE_ITEM(S3C_VA_SYS + 0x21C),
SAVE_ITEM(S3C_VA_SYS + 0x320),
SAVE_ITEM(S3C_VA_SYS + 0x330),
};
static int exynos4_sysreg_suspend(void)
{
if (soc_is_exynos4210()) {
s3c_pm_do_save(exynos4210_sysreg_save,
ARRAY_SIZE(exynos4210_sysreg_save));
} else if (soc_is_exynos4212() || soc_is_exynos4412()) {
s3c_pm_do_save(exynos4x12_sysreg_save,
ARRAY_SIZE(exynos4x12_sysreg_save));
}
return 0;
}
static void exynos4_sysreg_resume(void)
{
if (soc_is_exynos4210()) {
s3c_pm_do_restore_core(exynos4210_sysreg_save,
ARRAY_SIZE(exynos4210_sysreg_save));
} else if (soc_is_exynos4212() || soc_is_exynos4412()) {
s3c_pm_do_restore_core(exynos4x12_sysreg_save,
ARRAY_SIZE(exynos4x12_sysreg_save));
}
}
static struct syscore_ops exynos4_syscore_ops = {
.suspend = exynos4_sysreg_suspend,
.resume = exynos4_sysreg_resume,
};
static int __init exynos4_register_sysreg_pm(void)
{
register_syscore_ops(&exynos4_syscore_ops);
return 0;
}
arch_initcall(exynos4_register_sysreg_pm);
#endif
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