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 */
95