18c2ecf20Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0-only
28c2ecf20Sopenharmony_ci/*
38c2ecf20Sopenharmony_ci * linux/arch/arm/mach-omap1/board-nand.c
48c2ecf20Sopenharmony_ci *
58c2ecf20Sopenharmony_ci * Common OMAP1 board NAND code
68c2ecf20Sopenharmony_ci *
78c2ecf20Sopenharmony_ci * Copyright (C) 2004, 2012 Texas Instruments, Inc.
88c2ecf20Sopenharmony_ci * Copyright (C) 2002 MontaVista Software, Inc.
98c2ecf20Sopenharmony_ci * Copyright (C) 2001 RidgeRun, Inc.
108c2ecf20Sopenharmony_ci * Author: RidgeRun, Inc.
118c2ecf20Sopenharmony_ci *         Greg Lonnon (glonnon@ridgerun.com) or info@ridgerun.com
128c2ecf20Sopenharmony_ci */
138c2ecf20Sopenharmony_ci#include <linux/kernel.h>
148c2ecf20Sopenharmony_ci#include <linux/io.h>
158c2ecf20Sopenharmony_ci#include <linux/mtd/mtd.h>
168c2ecf20Sopenharmony_ci#include <linux/mtd/rawnand.h>
178c2ecf20Sopenharmony_ci
188c2ecf20Sopenharmony_ci#include "common.h"
198c2ecf20Sopenharmony_ci
208c2ecf20Sopenharmony_civoid omap1_nand_cmd_ctl(struct nand_chip *this, int cmd, unsigned int ctrl)
218c2ecf20Sopenharmony_ci{
228c2ecf20Sopenharmony_ci	unsigned long mask;
238c2ecf20Sopenharmony_ci
248c2ecf20Sopenharmony_ci	if (cmd == NAND_CMD_NONE)
258c2ecf20Sopenharmony_ci		return;
268c2ecf20Sopenharmony_ci
278c2ecf20Sopenharmony_ci	mask = (ctrl & NAND_CLE) ? 0x02 : 0;
288c2ecf20Sopenharmony_ci	if (ctrl & NAND_ALE)
298c2ecf20Sopenharmony_ci		mask |= 0x04;
308c2ecf20Sopenharmony_ci
318c2ecf20Sopenharmony_ci	writeb(cmd, this->legacy.IO_ADDR_W + mask);
328c2ecf20Sopenharmony_ci}
338c2ecf20Sopenharmony_ci
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