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sd.h
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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 */