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         /* 1-bit  ECC calculation by GPMC, Error detection by Software */
  25         OMAP_ECC_HAM1_CODE_HW = 0,
  26         /* 4-bit  ECC calculation by GPMC, Error detection by Software */
  27         OMAP_ECC_BCH4_CODE_HW_DETECTION_SW,
  28         /* 4-bit  ECC calculation by GPMC, Error detection by ELM */
  29         OMAP_ECC_BCH4_CODE_HW,
  30         /* 8-bit  ECC calculation by GPMC, Error detection by Software */
  31         OMAP_ECC_BCH8_CODE_HW_DETECTION_SW,
  32         /* 8-bit  ECC calculation by GPMC, Error detection by ELM */
  33         OMAP_ECC_BCH8_CODE_HW,
  34         /* 16-bit ECC calculation by GPMC, Error detection by ELM */
  35         OMAP_ECC_BCH16_CODE_HW,
  36 };
  37
  38 struct gpmc_nand_regs {
  39         void __iomem    *gpmc_status;
  40         void __iomem    *gpmc_nand_command;
  41         void __iomem    *gpmc_nand_address;
  42         void __iomem    *gpmc_nand_data;
  43         void __iomem    *gpmc_prefetch_config1;
  44         void __iomem    *gpmc_prefetch_config2;
  45         void __iomem    *gpmc_prefetch_control;
  46         void __iomem    *gpmc_prefetch_status;
  47         void __iomem    *gpmc_ecc_config;
  48         void __iomem    *gpmc_ecc_control;
  49         void __iomem    *gpmc_ecc_size_config;
  50         void __iomem    *gpmc_ecc1_result;
  51         void __iomem    *gpmc_bch_result0[GPMC_BCH_NUM_REMAINDER];
  52         void __iomem    *gpmc_bch_result1[GPMC_BCH_NUM_REMAINDER];
  53         void __iomem    *gpmc_bch_result2[GPMC_BCH_NUM_REMAINDER];
  54         void __iomem    *gpmc_bch_result3[GPMC_BCH_NUM_REMAINDER];
  55         void __iomem    *gpmc_bch_result4[GPMC_BCH_NUM_REMAINDER];
  56         void __iomem    *gpmc_bch_result5[GPMC_BCH_NUM_REMAINDER];
  57         void __iomem    *gpmc_bch_result6[GPMC_BCH_NUM_REMAINDER];
  58 };
  59
  60 struct omap_nand_platform_data {
  61         int                     cs;
  62         struct mtd_partition    *parts;
  63         int                     nr_parts;
  64         bool                    dev_ready;
  65         enum nand_io            xfer_type;
  66         int                     devsize;
  67         enum omap_ecc           ecc_opt;
  68         struct gpmc_nand_regs   reg;
  69
  70         /* for passing the partitions */
  71         struct device_node      *of_node;
  72         struct device_node      *elm_of_node;
  73 };
  74 #endif