arch/arm/mach-at91/include/mach/at91sam9_smc.h

   1 /*
   2  * arch/arm/mach-at91/include/mach/at91sam9_smc.h
   3  *
   4  * Copyright (C) 2007 Andrew Victor
   5  * Copyright (C) 2007 Atmel Corporation.
   6  *
   7  * Static Memory Controllers (SMC) - System peripherals registers.
   8  * Based on AT91SAM9261 datasheet revision D.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  */
  15
  16 #ifndef AT91SAM9_SMC_H
  17 #define AT91SAM9_SMC_H
  18
  19 #include <mach/cpu.h>
  20
  21 #ifndef __ASSEMBLY__
  22 struct sam9_smc_config {
  23         /* Setup register */
  24         u8 ncs_read_setup;
  25         u8 nrd_setup;
  26         u8 ncs_write_setup;
  27         u8 nwe_setup;
  28
  29         /* Pulse register */
  30         u8 ncs_read_pulse;
  31         u8 nrd_pulse;
  32         u8 ncs_write_pulse;
  33         u8 nwe_pulse;
  34
  35         /* Cycle register */
  36         u16 read_cycle;
  37         u16 write_cycle;
  38
  39         /* Mode register */
  40         u32 mode;
  41         u8 tdf_cycles:4;
  42 };
  43
  44 extern void sam9_smc_configure(int id, int cs, struct sam9_smc_config *config);
  45 extern void sam9_smc_read(int id, int cs, struct sam9_smc_config *config);
  46 extern void sam9_smc_read_mode(int id, int cs, struct sam9_smc_config *config);
  47 extern void sam9_smc_write_mode(int id, int cs, struct sam9_smc_config *config);
  48 #endif
  49
  50 #define AT91_SMC_SETUP          0x00                            /* Setup Register for CS n */
  51 #define         AT91_SMC_NWESETUP       (0x3f << 0)                     /* NWE Setup Length */
  52 #define                 AT91_SMC_NWESETUP_(x)   ((x) << 0)
  53 #define         AT91_SMC_NCS_WRSETUP    (0x3f << 8)                     /* NCS Setup Length in Write Access */
  54 #define                 AT91_SMC_NCS_WRSETUP_(x)        ((x) << 8)
  55 #define         AT91_SMC_NRDSETUP       (0x3f << 16)                    /* NRD Setup Length */
  56 #define                 AT91_SMC_NRDSETUP_(x)   ((x) << 16)
  57 #define         AT91_SMC_NCS_RDSETUP    (0x3f << 24)                    /* NCS Setup Length in Read Access */
  58 #define                 AT91_SMC_NCS_RDSETUP_(x)        ((x) << 24)
  59
  60 #define AT91_SMC_PULSE          0x04                            /* Pulse Register for CS n */
  61 #define         AT91_SMC_NWEPULSE       (0x7f <<  0)                    /* NWE Pulse Length */
  62 #define                 AT91_SMC_NWEPULSE_(x)   ((x) << 0)
  63 #define         AT91_SMC_NCS_WRPULSE    (0x7f <<  8)                    /* NCS Pulse Length in Write Access */
  64 #define                 AT91_SMC_NCS_WRPULSE_(x)((x) << 8)
  65 #define         AT91_SMC_NRDPULSE       (0x7f << 16)                    /* NRD Pulse Length */
  66 #define                 AT91_SMC_NRDPULSE_(x)   ((x) << 16)
  67 #define         AT91_SMC_NCS_RDPULSE    (0x7f << 24)                    /* NCS Pulse Length in Read Access */
  68 #define                 AT91_SMC_NCS_RDPULSE_(x)((x) << 24)
  69
  70 #define AT91_SMC_CYCLE          0x08                            /* Cycle Register for CS n */
  71 #define         AT91_SMC_NWECYCLE       (0x1ff << 0 )                   /* Total Write Cycle Length */
  72 #define                 AT91_SMC_NWECYCLE_(x)   ((x) << 0)
  73 #define         AT91_SMC_NRDCYCLE       (0x1ff << 16)                   /* Total Read Cycle Length */
  74 #define                 AT91_SMC_NRDCYCLE_(x)   ((x) << 16)
  75
  76 #define AT91_SMC_MODE           0x0c                            /* Mode Register for CS n */
  77 #define         AT91_SMC_READMODE       (1 <<  0)                       /* Read Mode */
  78 #define         AT91_SMC_WRITEMODE      (1 <<  1)                       /* Write Mode */
  79 #define         AT91_SMC_EXNWMODE       (3 <<  4)                       /* NWAIT Mode */
  80 #define                 AT91_SMC_EXNWMODE_DISABLE       (0 << 4)
  81 #define                 AT91_SMC_EXNWMODE_FROZEN        (2 << 4)
  82 #define                 AT91_SMC_EXNWMODE_READY         (3 << 4)
  83 #define         AT91_SMC_BAT            (1 <<  8)                       /* Byte Access Type */
  84 #define                 AT91_SMC_BAT_SELECT             (0 << 8)
  85 #define                 AT91_SMC_BAT_WRITE              (1 << 8)
  86 #define         AT91_SMC_DBW            (3 << 12)                       /* Data Bus Width */
  87 #define                 AT91_SMC_DBW_8                  (0 << 12)
  88 #define                 AT91_SMC_DBW_16                 (1 << 12)
  89 #define                 AT91_SMC_DBW_32                 (2 << 12)
  90 #define         AT91_SMC_TDF            (0xf << 16)                     /* Data Float Time. */
  91 #define                 AT91_SMC_TDF_(x)                ((x) << 16)
  92 #define         AT91_SMC_TDFMODE        (1 << 20)                       /* TDF Optimization - Enabled */
  93 #define         AT91_SMC_PMEN           (1 << 24)                       /* Page Mode Enabled */
  94 #define         AT91_SMC_PS             (3 << 28)                       /* Page Size */
  95 #define                 AT91_SMC_PS_4                   (0 << 28)
  96 #define                 AT91_SMC_PS_8                   (1 << 28)
  97 #define                 AT91_SMC_PS_16                  (2 << 28)
  98 #define                 AT91_SMC_PS_32                  (3 << 28)
  99
 100 #endif