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 84