drivers/misc/mediatek/freqhopping/sync_write.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright (c) 2023 MediaTek Inc.
 */


#ifndef _MT_SYNC_WRITE_H
#define _MT_SYNC_WRITE_H

#if defined(__KERNEL__)

#include <linux/io.h>
#include <asm/cacheflush.h>

/*
 * Define macros.
 */

#define mt_reg_sync_writel(v, a) \
	do {    \
		__raw_writel((v), (void __force __iomem *)((a)));   \
		mb(); /* ensure reg will be updated */ \
	} while (0)

#define mt_reg_sync_writew(v, a) \
	do {    \
		__raw_writew((v), (void __force __iomem *)((a)));   \
		mb(); /* ensure reg will be updated */ \
	} while (0)

#define mt_reg_sync_writeb(v, a) \
	do {    \
		__raw_writeb((v), (void __force __iomem *)((a)));   \
		mb(); /* ensure reg will be updated */ \
	} while (0)

#if (CONFIG_64BIT == 1)
#define mt_reg_sync_writeq(v, a) \
	do {    \
		__raw_writeq((v), (void __force __iomem *)((a)));   \
		mb(); /* ensure reg will be updated */ \
	} while (0)
#endif

#else				/* __KERNEL__ */

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>

#define mt_reg_sync_writel(v, a)        mt65xx_reg_sync_writel(v, a)
#define mt_reg_sync_writew(v, a)        mt65xx_reg_sync_writew(v, a)
#define mt_reg_sync_writeb(v, a)        mt65xx_reg_sync_writeb(v, a)

/* ensure data will be updated */
#define mb()   \
	(__asm__ __volatile__ ("dsb" : : : "memory"))

#define mt65xx_reg_sync_writel(v, a) \
	do {    \
		*(unsigned int *)(a) = (v);    \
		mb(); /*ensure reg will be updated*/ \
	} while (0)

#define mt65xx_reg_sync_writew(v, a) \
	do {    \
		*(unsigned short *)(a) = (v);    \
		mb(); /*ensure reg will be updated*/ \
	} while (0)

#define mt65xx_reg_sync_writeb(v, a) \
	do {    \
		*(unsigned char *)(a) = (v);    \
		mb(); /*ensure reg will be updated*/ \
	} while (0)

#endif				/* __KERNEL__ */

#endif				/* !_MT_SYNC_WRITE_H */