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         /* Deprecated. Do not use */
  67         void __iomem    *gpmc_status;
  68 };
  69
  70 struct omap_nand_platform_data {
  71         int                     cs;
  72         struct mtd_partition    *parts;
  73         int                     nr_parts;
  74         bool                    flash_bbt;
  75         enum nand_io            xfer_type;
  76         int                     devsize;
  77         enum omap_ecc           ecc_opt;
  78
  79         struct device_node      *elm_of_node;
  80
  81         /* deprecated */
  82         struct gpmc_nand_regs   reg;
  83         struct device_node      *of_node;
  84         bool                    dev_ready;
  85 };
  86 #endif