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/*

 *  include/linux/mmc/sd.h

 *

 *  Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or (at

 * your option) any later version.

 */

#ifndef MMC_SD_H

#define MMC_SD_H

/* SD commands                           type  argument     response */

  /* class 0 */

/* This is basically the same command as for MMC with some quirks. */

#define SD_SEND_RELATIVE_ADDR     3   /* bcr                     R6  */

#define SD_SEND_IF_COND           8   /* bcr  [11:0] See below   R7  */

  /* class 10 */

#define SD_SWITCH                 6   /* adtc [31:0] See below   R1  */

  /* Application commands */

#define SD_APP_SET_BUS_WIDTH      6   /* ac   [1:0] bus width    R1  */

#define SD_APP_SEND_NUM_WR_BLKS  22   /* adtc                    R1  */

#define SD_APP_OP_COND           41   /* bcr  [31:0] OCR         R3  */

#define SD_APP_SEND_SCR          51   /* adtc                    R1  */

/*

 * SD_SWITCH argument format:

 *

 *      [31] Check (0) or switch (1)

 *      [30:24] Reserved (0)

 *      [23:20] Function group 6

 *      [19:16] Function group 5

 *      [15:12] Function group 4

 *      [11:8] Function group 3

 *      [7:4] Function group 2

 *      [3:0] Function group 1

 */

/*

 * SD_SEND_IF_COND argument format:

 *

 *      [31:12] Reserved (0)

 *      [11:8] Host Voltage Supply Flags

 *      [7:0] Check Pattern (0xAA)

 */

/*

 * SCR field definitions

 */

#define SCR_SPEC_VER_0          0        /* Implements system specification 1.0 - 1.01 */

#define SCR_SPEC_VER_1          1       /* Implements system specification 1.10 */

#define SCR_SPEC_VER_2          2       /* Implements system specification 2.00 */

/*

 * SD bus widths

 */

#define SD_BUS_WIDTH_1          0

#define SD_BUS_WIDTH_4          2

/*

 * SD_SWITCH mode

 */

#define SD_SWITCH_CHECK         0

#define SD_SWITCH_SET           1

/*

 * SD_SWITCH function groups

 */

#define SD_SWITCH_GRP_ACCESS    0

/*

 * SD_SWITCH access modes

 */

#define SD_SWITCH_ACCESS_DEF    0

#define SD_SWITCH_ACCESS_HS     1

#endif