619df2431e750794c1081580221e88659241554b
[sfrench/cifs-2.6.git] / include / linux / platform_data / mtd-nand-omap2.h
1 /*
2  * Copyright (C) 2006 Micron Technology Inc.
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License version 2 as
6  * published by the Free Software Foundation.
7  */
8
9 #ifndef _MTD_NAND_OMAP2_H
10 #define _MTD_NAND_OMAP2_H
11
12 #include <linux/mtd/partitions.h>
13
14 #define GPMC_BCH_NUM_REMAINDER  8
15
16 enum nand_io {
17         NAND_OMAP_PREFETCH_POLLED = 0,  /* prefetch polled mode, default */
18         NAND_OMAP_POLLED,               /* polled mode, without prefetch */
19         NAND_OMAP_PREFETCH_DMA,         /* prefetch enabled sDMA mode */
20         NAND_OMAP_PREFETCH_IRQ          /* prefetch enabled irq mode */
21 };
22
23 enum omap_ecc {
24         /*
25          * 1-bit ECC: calculation and correction by SW
26          * ECC stored at end of spare area
27          */
28         OMAP_ECC_HAM1_CODE_SW = 0,
29
30         /*
31          * 1-bit ECC: calculation by GPMC, Error detection by Software
32          * ECC layout compatible with ROM code layout
33          */
34         OMAP_ECC_HAM1_CODE_HW,
35         /* 4-bit  ECC calculation by GPMC, Error detection by Software */
36         OMAP_ECC_BCH4_CODE_HW_DETECTION_SW,
37         /* 4-bit  ECC calculation by GPMC, Error detection by ELM */
38         OMAP_ECC_BCH4_CODE_HW,
39         /* 8-bit  ECC calculation by GPMC, Error detection by Software */
40         OMAP_ECC_BCH8_CODE_HW_DETECTION_SW,
41         /* 8-bit  ECC calculation by GPMC, Error detection by ELM */
42         OMAP_ECC_BCH8_CODE_HW,
43         /* 16-bit ECC calculation by GPMC, Error detection by ELM */
44         OMAP_ECC_BCH16_CODE_HW,
45 };
46
47 struct gpmc_nand_regs {
48         void __iomem    *gpmc_nand_command;
49         void __iomem    *gpmc_nand_address;
50         void __iomem    *gpmc_nand_data;
51         void __iomem    *gpmc_prefetch_config1;
52         void __iomem    *gpmc_prefetch_config2;
53         void __iomem    *gpmc_prefetch_control;
54         void __iomem    *gpmc_prefetch_status;
55         void __iomem    *gpmc_ecc_config;
56         void __iomem    *gpmc_ecc_control;
57         void __iomem    *gpmc_ecc_size_config;
58         void __iomem    *gpmc_ecc1_result;
59         void __iomem    *gpmc_bch_result0[GPMC_BCH_NUM_REMAINDER];
60         void __iomem    *gpmc_bch_result1[GPMC_BCH_NUM_REMAINDER];
61         void __iomem    *gpmc_bch_result2[GPMC_BCH_NUM_REMAINDER];
62         void __iomem    *gpmc_bch_result3[GPMC_BCH_NUM_REMAINDER];
63         void __iomem    *gpmc_bch_result4[GPMC_BCH_NUM_REMAINDER];
64         void __iomem    *gpmc_bch_result5[GPMC_BCH_NUM_REMAINDER];
65         void __iomem    *gpmc_bch_result6[GPMC_BCH_NUM_REMAINDER];
66 };
67 #endif