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

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) 2006 Micron Technology Inc.
   4  */
   5
   6 #ifndef _MTD_NAND_OMAP2_H
   7 #define _MTD_NAND_OMAP2_H
   8
   9 #include <linux/mtd/partitions.h>
  10
  11 #define GPMC_BCH_NUM_REMAINDER  8
  12
  13 enum nand_io {
  14         NAND_OMAP_PREFETCH_POLLED = 0,  /* prefetch polled mode, default */
  15         NAND_OMAP_POLLED,               /* polled mode, without prefetch */
  16         NAND_OMAP_PREFETCH_DMA,         /* prefetch enabled sDMA mode */
  17         NAND_OMAP_PREFETCH_IRQ          /* prefetch enabled irq mode */
  18 };
  19
  20 enum omap_ecc {
  21         /*
  22          * 1-bit ECC: calculation and correction by SW
  23          * ECC stored at end of spare area
  24          */
  25         OMAP_ECC_HAM1_CODE_SW = 0,
  26
  27         /*
  28          * 1-bit ECC: calculation by GPMC, Error detection by Software
  29          * ECC layout compatible with ROM code layout
  30          */
  31         OMAP_ECC_HAM1_CODE_HW,
  32         /* 4-bit  ECC calculation by GPMC, Error detection by Software */
  33         OMAP_ECC_BCH4_CODE_HW_DETECTION_SW,
  34         /* 4-bit  ECC calculation by GPMC, Error detection by ELM */
  35         OMAP_ECC_BCH4_CODE_HW,
  36         /* 8-bit  ECC calculation by GPMC, Error detection by Software */
  37         OMAP_ECC_BCH8_CODE_HW_DETECTION_SW,
  38         /* 8-bit  ECC calculation by GPMC, Error detection by ELM */
  39         OMAP_ECC_BCH8_CODE_HW,
  40         /* 16-bit ECC calculation by GPMC, Error detection by ELM */
  41         OMAP_ECC_BCH16_CODE_HW,
  42 };
  43
  44 struct gpmc_nand_regs {
  45         void __iomem    *gpmc_nand_command;
  46         void __iomem    *gpmc_nand_address;
  47         void __iomem    *gpmc_nand_data;
  48         void __iomem    *gpmc_prefetch_config1;
  49         void __iomem    *gpmc_prefetch_config2;
  50         void __iomem    *gpmc_prefetch_control;
  51         void __iomem    *gpmc_prefetch_status;
  52         void __iomem    *gpmc_ecc_config;
  53         void __iomem    *gpmc_ecc_control;
  54         void __iomem    *gpmc_ecc_size_config;
  55         void __iomem    *gpmc_ecc1_result;
  56         void __iomem    *gpmc_bch_result0[GPMC_BCH_NUM_REMAINDER];
  57         void __iomem    *gpmc_bch_result1[GPMC_BCH_NUM_REMAINDER];
  58         void __iomem    *gpmc_bch_result2[GPMC_BCH_NUM_REMAINDER];
  59         void __iomem    *gpmc_bch_result3[GPMC_BCH_NUM_REMAINDER];
  60         void __iomem    *gpmc_bch_result4[GPMC_BCH_NUM_REMAINDER];
  61         void __iomem    *gpmc_bch_result5[GPMC_BCH_NUM_REMAINDER];
  62         void __iomem    *gpmc_bch_result6[GPMC_BCH_NUM_REMAINDER];
  63 };
  64 #endif