tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * arch/arm/plat-omap/include/mach/nand.h
3 *
4 * Copyright (C) 2006 Micron Technology Inc.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#ifndef _MTD_NAND_OMAP2_H
12#define _MTD_NAND_OMAP2_H
13
14#include <linux/mtd/partitions.h>
15
16#define GPMC_BCH_NUM_REMAINDER 8
17
18enum nand_io {
19 NAND_OMAP_PREFETCH_POLLED = 0, /* prefetch polled mode, default */
20 NAND_OMAP_POLLED, /* polled mode, without prefetch */
21 NAND_OMAP_PREFETCH_DMA, /* prefetch enabled sDMA mode */
22 NAND_OMAP_PREFETCH_IRQ /* prefetch enabled irq mode */
23};
24
25enum omap_ecc {
26 /* 1-bit ecc: stored at end of spare area */
27 OMAP_ECC_HAMMING_CODE_DEFAULT = 0, /* Default, s/w method */
28 OMAP_ECC_HAMMING_CODE_HW, /* gpmc to detect the error */
29 /* 1-bit ecc: stored at beginning of spare area as romcode */
30 OMAP_ECC_HAMMING_CODE_HW_ROMCODE, /* gpmc method & romcode layout */
31 OMAP_ECC_BCH4_CODE_HW, /* 4-bit BCH ecc code */
32 OMAP_ECC_BCH8_CODE_HW, /* 8-bit BCH ecc code */
33};
34
35struct gpmc_nand_regs {
36 void __iomem *gpmc_status;
37 void __iomem *gpmc_nand_command;
38 void __iomem *gpmc_nand_address;
39 void __iomem *gpmc_nand_data;
40 void __iomem *gpmc_prefetch_config1;
41 void __iomem *gpmc_prefetch_config2;
42 void __iomem *gpmc_prefetch_control;
43 void __iomem *gpmc_prefetch_status;
44 void __iomem *gpmc_ecc_config;
45 void __iomem *gpmc_ecc_control;
46 void __iomem *gpmc_ecc_size_config;
47 void __iomem *gpmc_ecc1_result;
48 void __iomem *gpmc_bch_result0[GPMC_BCH_NUM_REMAINDER];
49 void __iomem *gpmc_bch_result1[GPMC_BCH_NUM_REMAINDER];
50 void __iomem *gpmc_bch_result2[GPMC_BCH_NUM_REMAINDER];
51 void __iomem *gpmc_bch_result3[GPMC_BCH_NUM_REMAINDER];
52};
53
54struct omap_nand_platform_data {
55 int cs;
56 struct mtd_partition *parts;
57 int nr_parts;
58 bool dev_ready;
59 enum nand_io xfer_type;
60 int devsize;
61 enum omap_ecc ecc_opt;
62 struct gpmc_nand_regs reg;
63
64 /* for passing the partitions */
65 struct device_node *of_node;
66};
67#endif