include/linux/soc/samsung/s3c-pm.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * 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>
 */

#ifndef __LINUX_SOC_SAMSUNG_S3C_PM_H
#define __LINUX_SOC_SAMSUNG_S3C_PM_H __FILE__

#include <linux/types.h>

/* 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, ...);

#define S3C_PMDBG(fmt...) s3c_pm_dbg(fmt)

extern void s3c_pm_save_uarts(bool is_s3c24xx);
extern void s3c_pm_restore_uarts(bool is_s3c24xx);

#ifdef CONFIG_ARCH_S3C64XX
extern void s3c_pm_arch_update_uart(void __iomem *regs,
				    struct pm_uart_save *save);
#else
static inline void
s3c_pm_arch_update_uart(void __iomem *regs, struct pm_uart_save *save)
{
}
#endif

#else
#define S3C_PMDBG(fmt...) pr_debug(fmt)

static inline void s3c_pm_save_uarts(bool is_s3c24xx) { }
static inline void s3c_pm_restore_uarts(bool is_s3c24xx) { }
#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

/* system device subsystems */

extern struct bus_type s3c2410_subsys;
extern struct bus_type s3c2410a_subsys;
extern struct bus_type s3c2412_subsys;
extern struct bus_type s3c2416_subsys;
extern struct bus_type s3c2440_subsys;
extern struct bus_type s3c2442_subsys;
extern struct bus_type s3c2443_subsys;

#endif