include/linux/platform_data/mtd-nand-omap2.h

   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
  18 enum 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
  25 enum omap_ecc {
  26         /* 1-bit  ECC calculation by GPMC, Error detection by Software */
  27         OMAP_ECC_HAM1_CODE_HW = 0,
  28         /* 4-bit  ECC calculation by GPMC, Error detection by Software */
  29         OMAP_ECC_BCH4_CODE_HW_DETECTION_SW,
  30         /* 4-bit  ECC calculation by GPMC, Error detection by ELM */
  31         OMAP_ECC_BCH4_CODE_HW,
  32         /* 8-bit  ECC calculation by GPMC, Error detection by Software */
  33         OMAP_ECC_BCH8_CODE_HW_DETECTION_SW,
  34         /* 8-bit  ECC calculation by GPMC, Error detection by ELM */
  35         OMAP_ECC_BCH8_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 };
  56
  57 struct omap_nand_platform_data {
  58         int                     cs;
  59         struct mtd_partition    *parts;
  60         int                     nr_parts;
  61         bool                    dev_ready;
  62         enum nand_io            xfer_type;
  63         int                     devsize;
  64         enum omap_ecc           ecc_opt;
  65         struct gpmc_nand_regs   reg;
  66
  67         /* for passing the partitions */
  68         struct device_node      *of_node;
  69         struct device_node      *elm_of_node;
  70 };
  71 #endif