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