drivers/mtd/nand/atmel_nand_nfc.h

   1 /*
   2  * Atmel Nand Flash Controller (NFC) - System peripherals regsters.
   3  * Based on SAMA5D3 datasheet.
   4  *
   5  * © Copyright 2013 Atmel Corporation.
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation; either version 2 of the License, or (at your
  10  * option) any later version.
  11  */
  12
  13 #ifndef ATMEL_NAND_NFC_H
  14 #define ATMEL_NAND_NFC_H
  15
  16 /*
  17  * HSMC NFC registers
  18  */
  19 #define ATMEL_HSMC_NFC_CFG      0x00            /* NFC Configuration Register */
  20 #define         NFC_CFG_PAGESIZE        (7 << 0)
  21 #define                 NFC_CFG_PAGESIZE_512    (0 << 0)
  22 #define                 NFC_CFG_PAGESIZE_1024   (1 << 0)
  23 #define                 NFC_CFG_PAGESIZE_2048   (2 << 0)
  24 #define                 NFC_CFG_PAGESIZE_4096   (3 << 0)
  25 #define                 NFC_CFG_PAGESIZE_8192   (4 << 0)
  26 #define         NFC_CFG_WSPARE          (1 << 8)
  27 #define         NFC_CFG_RSPARE          (1 << 9)
  28 #define         NFC_CFG_NFC_DTOCYC      (0xf << 16)
  29 #define         NFC_CFG_NFC_DTOMUL      (0x7 << 20)
  30 #define         NFC_CFG_NFC_SPARESIZE   (0x7f << 24)
  31 #define         NFC_CFG_NFC_SPARESIZE_BIT_POS   24
  32
  33 #define ATMEL_HSMC_NFC_CTRL     0x04            /* NFC Control Register */
  34 #define         NFC_CTRL_ENABLE         (1 << 0)
  35 #define         NFC_CTRL_DISABLE        (1 << 1)
  36
  37 #define ATMEL_HSMC_NFC_SR       0x08            /* NFC Status Register */
  38 #define         NFC_SR_XFR_DONE         (1 << 16)
  39 #define         NFC_SR_CMD_DONE         (1 << 17)
  40 #define         NFC_SR_RB_EDGE          (1 << 24)
  41
  42 #define ATMEL_HSMC_NFC_IER      0x0c
  43 #define ATMEL_HSMC_NFC_IDR      0x10
  44 #define ATMEL_HSMC_NFC_IMR      0x14
  45 #define ATMEL_HSMC_NFC_CYCLE0   0x18            /* NFC Address Cycle Zero */
  46 #define         ATMEL_HSMC_NFC_ADDR_CYCLE0      (0xff)
  47
  48 #define ATMEL_HSMC_NFC_BANK     0x1c            /* NFC Bank Register */
  49 #define         ATMEL_HSMC_NFC_BANK0            (0 << 0)
  50 #define         ATMEL_HSMC_NFC_BANK1            (1 << 0)
  51
  52 #define nfc_writel(addr, reg, value) \
  53         writel((value), (addr) + ATMEL_HSMC_NFC_##reg)
  54
  55 #define nfc_readl(addr, reg) \
  56         readl_relaxed((addr) + ATMEL_HSMC_NFC_##reg)
  57
  58 /*
  59  * NFC Address Command definitions
  60  */
  61 #define NFCADDR_CMD_CMD1        (0xff << 2)     /* Command for Cycle 1 */
  62 #define NFCADDR_CMD_CMD1_BIT_POS        2
  63 #define NFCADDR_CMD_CMD2        (0xff << 10)    /* Command for Cycle 2 */
  64 #define NFCADDR_CMD_CMD2_BIT_POS        10
  65 #define NFCADDR_CMD_VCMD2       (0x1 << 18)     /* Valid Cycle 2 Command */
  66 #define NFCADDR_CMD_ACYCLE      (0x7 << 19)     /* Number of Address required */
  67 #define         NFCADDR_CMD_ACYCLE_NONE         (0x0 << 19)
  68 #define         NFCADDR_CMD_ACYCLE_1            (0x1 << 19)
  69 #define         NFCADDR_CMD_ACYCLE_2            (0x2 << 19)
  70 #define         NFCADDR_CMD_ACYCLE_3            (0x3 << 19)
  71 #define         NFCADDR_CMD_ACYCLE_4            (0x4 << 19)
  72 #define         NFCADDR_CMD_ACYCLE_5            (0x5 << 19)
  73 #define NFCADDR_CMD_ACYCLE_BIT_POS      19
  74 #define NFCADDR_CMD_CSID        (0x7 << 22)     /* Chip Select Identifier */
  75 #define         NFCADDR_CMD_CSID_0              (0x0 << 22)
  76 #define         NFCADDR_CMD_CSID_1              (0x1 << 22)
  77 #define         NFCADDR_CMD_CSID_2              (0x2 << 22)
  78 #define         NFCADDR_CMD_CSID_3              (0x3 << 22)
  79 #define         NFCADDR_CMD_CSID_4              (0x4 << 22)
  80 #define         NFCADDR_CMD_CSID_5              (0x5 << 22)
  81 #define         NFCADDR_CMD_CSID_6              (0x6 << 22)
  82 #define         NFCADDR_CMD_CSID_7              (0x7 << 22)
  83 #define NFCADDR_CMD_DATAEN      (0x1 << 25)     /* Data Transfer Enable */
  84 #define NFCADDR_CMD_DATADIS     (0x0 << 25)     /* Data Transfer Disable */
  85 #define NFCADDR_CMD_NFCRD       (0x0 << 26)     /* NFC Read Enable */
  86 #define NFCADDR_CMD_NFCWR       (0x1 << 26)     /* NFC Write Enable */
  87 #define NFCADDR_CMD_NFCBUSY     (0x1 << 27)     /* NFC Busy */
  88
  89 #define nfc_cmd_addr1234_writel(cmd, addr1234, nfc_base) \
  90         writel((addr1234), (cmd) + nfc_base)
  91
  92 #define nfc_cmd_readl(bitstatus, nfc_base) \
  93         readl_relaxed((bitstatus) + nfc_base)
  94
  95 #define NFC_TIME_OUT_MS         100
  96 #define NFC_SRAM_BANK1_OFFSET   0x1200
  97
  98 #endif