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31cde044 PW |
1 | /* |
2 | * linux/arch/arm/mach-omap1/board-nand.c | |
3 | * | |
4 | * Common OMAP1 board NAND code | |
5 | * | |
6 | * Copyright (C) 2004, 2012 Texas Instruments, Inc. | |
7 | * Copyright (C) 2002 MontaVista Software, Inc. | |
8 | * Copyright (C) 2001 RidgeRun, Inc. | |
9 | * Author: RidgeRun, Inc. | |
10 | * Greg Lonnon (glonnon@ridgerun.com) or info@ridgerun.com | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License version 2 as | |
14 | * published by the Free Software Foundation. | |
15 | */ | |
16 | #include <linux/kernel.h> | |
17 | #include <linux/io.h> | |
18 | #include <linux/mtd/mtd.h> | |
19 | #include <linux/mtd/nand.h> | |
20 | ||
21 | #include "common.h" | |
22 | ||
23 | void omap1_nand_cmd_ctl(struct mtd_info *mtd, int cmd, unsigned int ctrl) | |
24 | { | |
c993e095 | 25 | struct nand_chip *this = mtd_to_nand(mtd); |
31cde044 PW |
26 | unsigned long mask; |
27 | ||
28 | if (cmd == NAND_CMD_NONE) | |
29 | return; | |
30 | ||
31 | mask = (ctrl & NAND_CLE) ? 0x02 : 0; | |
32 | if (ctrl & NAND_ALE) | |
33 | mask |= 0x04; | |
34 | ||
35 | writeb(cmd, this->IO_ADDR_W + mask); | |
36 | } | |
37 |