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 MMC_SD_H
  13 #define 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
  21   /* class 10 */
  22 #define SD_SWITCH                 6   /* adtc [31:0] See below   R1  */
  23
  24   /* class 5 */
  25 #define SD_ERASE_WR_BLK_START    32   /* ac   [31:0] data addr   R1  */
  26 #define SD_ERASE_WR_BLK_END      33   /* ac   [31:0] data addr   R1  */
  27
  28   /* Application commands */
  29 #define SD_APP_SET_BUS_WIDTH      6   /* ac   [1:0] bus width    R1  */
  30 #define SD_APP_SD_STATUS         13   /* adtc                    R1  */
  31 #define SD_APP_SEND_NUM_WR_BLKS  22   /* adtc                    R1  */
  32 #define SD_APP_OP_COND           41   /* bcr  [31:0] OCR         R3  */
  33 #define SD_APP_SEND_SCR          51   /* adtc                    R1  */
  34
  35 /*
  36  * SD_SWITCH argument format:
  37  *
  38  *      [31] Check (0) or switch (1)
  39  *      [30:24] Reserved (0)
  40  *      [23:20] Function group 6
  41  *      [19:16] Function group 5
  42  *      [15:12] Function group 4
  43  *      [11:8] Function group 3
  44  *      [7:4] Function group 2
  45  *      [3:0] Function group 1
  46  */
  47
  48 /*
  49  * SD_SEND_IF_COND argument format:
  50  *
  51  *      [31:12] Reserved (0)
  52  *      [11:8] Host Voltage Supply Flags
  53  *      [7:0] Check Pattern (0xAA)
  54  */
  55
  56 /*
  57  * SCR field definitions
  58  */
  59
  60 #define SCR_SPEC_VER_0          0       /* Implements system specification 1.0 - 1.01 */
  61 #define SCR_SPEC_VER_1          1       /* Implements system specification 1.10 */
  62 #define SCR_SPEC_VER_2          2       /* Implements system specification 2.00 */
  63
  64 /*
  65  * SD bus widths
  66  */
  67 #define SD_BUS_WIDTH_1          0
  68 #define SD_BUS_WIDTH_4          2
  69
  70 /*
  71  * SD_SWITCH mode
  72  */
  73 #define SD_SWITCH_CHECK         0
  74 #define SD_SWITCH_SET           1
  75
  76 /*
  77  * SD_SWITCH function groups
  78  */
  79 #define SD_SWITCH_GRP_ACCESS    0
  80
  81 /*
  82  * SD_SWITCH access modes
  83  */
  84 #define SD_SWITCH_ACCESS_DEF    0
  85 #define SD_SWITCH_ACCESS_HS     1
  86
  87 #endif
  88