include/linux/mmc/sd.h

   1 /*
   2  *  include/linux/mmc/sd.h
   3  *
   4  *  Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved.
   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 as published by
   8  * the Free Software Foundation; either version 2 of the License, or (at
   9  * your option) any later version.
  10  */
  11
  12 #ifndef LINUX_MMC_SD_H
  13 #define LINUX_MMC_SD_H
  14
  15 /* SD commands                           type  argument     response */
  16   /* class 0 */
  17 /* This is basically the same command as for MMC with some quirks. */
  18 #define SD_SEND_RELATIVE_ADDR     3   /* bcr                     R6  */
  19 #define SD_SEND_IF_COND           8   /* bcr  [11:0] See below   R7  */
  20 #define SD_SWITCH_VOLTAGE         11  /* ac                      R1  */
  21
  22   /* class 10 */
  23 #define SD_SWITCH                 6   /* adtc [31:0] See below   R1  */
  24
  25   /* class 5 */
  26 #define SD_ERASE_WR_BLK_START    32   /* ac   [31:0] data addr   R1  */
  27 #define SD_ERASE_WR_BLK_END      33   /* ac   [31:0] data addr   R1  */
  28
  29   /* Application commands */
  30 #define SD_APP_SET_BUS_WIDTH      6   /* ac   [1:0] bus width    R1  */
  31 #define SD_APP_SD_STATUS         13   /* adtc                    R1  */
  32 #define SD_APP_SEND_NUM_WR_BLKS  22   /* adtc                    R1  */
  33 #define SD_APP_OP_COND           41   /* bcr  [31:0] OCR         R3  */
  34 #define SD_APP_SEND_SCR          51   /* adtc                    R1  */
  35
  36 /* OCR bit definitions */
  37 #define SD_OCR_S18R             (1 << 24)    /* 1.8V switching request */
  38 #define SD_ROCR_S18A            SD_OCR_S18R  /* 1.8V switching accepted by card */
  39 #define SD_OCR_XPC              (1 << 28)    /* SDXC power control */
  40 #define SD_OCR_CCS              (1 << 30)    /* Card Capacity Status */
  41
  42 /*
  43  * SD_SWITCH argument format:
  44  *
  45  *      [31] Check (0) or switch (1)
  46  *      [30:24] Reserved (0)
  47  *      [23:20] Function group 6
  48  *      [19:16] Function group 5
  49  *      [15:12] Function group 4
  50  *      [11:8] Function group 3
  51  *      [7:4] Function group 2
  52  *      [3:0] Function group 1
  53  */
  54
  55 /*
  56  * SD_SEND_IF_COND argument format:
  57  *
  58  *      [31:12] Reserved (0)
  59  *      [11:8] Host Voltage Supply Flags
  60  *      [7:0] Check Pattern (0xAA)
  61  */
  62
  63 /*
  64  * SCR field definitions
  65  */
  66
  67 #define SCR_SPEC_VER_0          0       /* Implements system specification 1.0 - 1.01 */
  68 #define SCR_SPEC_VER_1          1       /* Implements system specification 1.10 */
  69 #define SCR_SPEC_VER_2          2       /* Implements system specification 2.00-3.0X */
  70
  71 /*
  72  * SD bus widths
  73  */
  74 #define SD_BUS_WIDTH_1          0
  75 #define SD_BUS_WIDTH_4          2
  76
  77 /*
  78  * SD_SWITCH mode
  79  */
  80 #define SD_SWITCH_CHECK         0
  81 #define SD_SWITCH_SET           1
  82
  83 /*
  84  * SD_SWITCH function groups
  85  */
  86 #define SD_SWITCH_GRP_ACCESS    0
  87
  88 /*
  89  * SD_SWITCH access modes
  90  */
  91 #define SD_SWITCH_ACCESS_DEF    0
  92 #define SD_SWITCH_ACCESS_HS     1
  93
  94 #endif /* LINUX_MMC_SD_H */