111 lines
3.1 KiB
C
111 lines
3.1 KiB
C
/*
|
|
* Copyright (C) 2013 Samsung Electronics Co., Ltd.
|
|
* Tomasz Figa <t.figa@samsung.com>
|
|
* Copyright (c) 2004 Simtec Electronics
|
|
* http://armlinux.simtec.co.uk/
|
|
* Written by Ben Dooks, <ben@simtec.co.uk>
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef __PLAT_SAMSUNG_PM_COMMON_H
|
|
#define __PLAT_SAMSUNG_PM_COMMON_H __FILE__
|
|
|
|
#include <linux/irq.h>
|
|
|
|
/* sleep save info */
|
|
|
|
/**
|
|
* struct sleep_save - save information for shared peripherals.
|
|
* @reg: Pointer to the register to save.
|
|
* @val: Holder for the value saved from reg.
|
|
*
|
|
* This describes a list of registers which is used by the pm core and
|
|
* other subsystem to save and restore register values over suspend.
|
|
*/
|
|
struct sleep_save {
|
|
void __iomem *reg;
|
|
unsigned long val;
|
|
};
|
|
|
|
#define SAVE_ITEM(x) \
|
|
{ .reg = (x) }
|
|
|
|
/* helper functions to save/restore lists of registers. */
|
|
|
|
extern void s3c_pm_do_save(struct sleep_save *ptr, int count);
|
|
extern void s3c_pm_do_restore(const struct sleep_save *ptr, int count);
|
|
extern void s3c_pm_do_restore_core(const struct sleep_save *ptr, int count);
|
|
|
|
/* PM debug functions */
|
|
|
|
/**
|
|
* struct pm_uart_save - save block for core UART
|
|
* @ulcon: Save value for S3C2410_ULCON
|
|
* @ucon: Save value for S3C2410_UCON
|
|
* @ufcon: Save value for S3C2410_UFCON
|
|
* @umcon: Save value for S3C2410_UMCON
|
|
* @ubrdiv: Save value for S3C2410_UBRDIV
|
|
*
|
|
* Save block for UART registers to be held over sleep and restored if they
|
|
* are needed (say by debug).
|
|
*/
|
|
struct pm_uart_save {
|
|
u32 ulcon;
|
|
u32 ucon;
|
|
u32 ufcon;
|
|
u32 umcon;
|
|
u32 ubrdiv;
|
|
u32 udivslot;
|
|
};
|
|
|
|
#ifdef CONFIG_SAMSUNG_PM_DEBUG
|
|
/**
|
|
* s3c_pm_dbg() - low level debug function for use in suspend/resume.
|
|
* @msg: The message to print.
|
|
*
|
|
* This function is used mainly to debug the resume process before the system
|
|
* can rely on printk/console output. It uses the low-level debugging output
|
|
* routine printascii() to do its work.
|
|
*/
|
|
extern void s3c_pm_dbg(const char *msg, ...);
|
|
|
|
/**
|
|
* s3c_pm_debug_init() - suspend/resume low level debug initialization.
|
|
* @base: Virtual base of UART to use for suspend/resume debugging.
|
|
*
|
|
* This function needs to be called before S3C_PMDBG() can be used, to set up
|
|
* UART port base address and configuration.
|
|
*/
|
|
extern void s3c_pm_debug_init(void);
|
|
|
|
#define S3C_PMDBG(fmt...) s3c_pm_dbg(fmt)
|
|
|
|
extern void s3c_pm_save_uarts(void);
|
|
extern void s3c_pm_restore_uarts(void);
|
|
#else
|
|
#define S3C_PMDBG(fmt...) pr_debug(fmt)
|
|
#define s3c_pm_debug_init() do { } while (0)
|
|
|
|
static inline void s3c_pm_save_uarts(void) { }
|
|
static inline void s3c_pm_restore_uarts(void) { }
|
|
#endif
|
|
|
|
/* suspend memory checking */
|
|
|
|
#ifdef CONFIG_SAMSUNG_PM_CHECK
|
|
extern void s3c_pm_check_prepare(void);
|
|
extern void s3c_pm_check_restore(void);
|
|
extern void s3c_pm_check_cleanup(void);
|
|
extern void s3c_pm_check_store(void);
|
|
#else
|
|
#define s3c_pm_check_prepare() do { } while (0)
|
|
#define s3c_pm_check_restore() do { } while (0)
|
|
#define s3c_pm_check_cleanup() do { } while (0)
|
|
#define s3c_pm_check_store() do { } while (0)
|
|
#endif
|
|
|
|
#endif
|