1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * linux/arch/arm/mach-omap1/board-nand.c
 4 *
 5 * Common OMAP1 board NAND code
 6 *
 7 * Copyright (C) 2004, 2012 Texas Instruments, Inc.
 8 * Copyright (C) 2002 MontaVista Software, Inc.
 9 * Copyright (C) 2001 RidgeRun, Inc.
10 * Author: RidgeRun, Inc.
11 *         Greg Lonnon (glonnon@ridgerun.com) or info@ridgerun.com
12 */
13#include <linux/kernel.h>
14#include <linux/io.h>
15#include <linux/mtd/mtd.h>
16#include <linux/mtd/rawnand.h>
17
18#include "common.h"
19
20void omap1_nand_cmd_ctl(struct nand_chip *this, int cmd, unsigned int ctrl)
21{
22	unsigned long mask;
23
24	if (cmd == NAND_CMD_NONE)
25		return;
26
27	mask = (ctrl & NAND_CLE) ? 0x02 : 0;
28	if (ctrl & NAND_ALE)
29		mask |= 0x04;
30
31	writeb(cmd, this->legacy.IO_ADDR_W + mask);
32}
33