diff --git a/include/linux/mmc/sd.h b/include/linux/mmc/sd.h
new file mode 100644
index 0000000..1ebcf9b
--- /dev/null
+++ b/include/linux/mmc/sd.h
@@ -0,0 +1,94 @@
+/*
+ *  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 LINUX_MMC_SD_H
+#define LINUX_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  */
+#define SD_SWITCH_VOLTAGE         11  /* ac                      R1  */
+
+  /* class 10 */
+#define SD_SWITCH                 6   /* adtc [31:0] See below   R1  */
+
+  /* class 5 */
+#define SD_ERASE_WR_BLK_START    32   /* ac   [31:0] data addr   R1  */
+#define SD_ERASE_WR_BLK_END      33   /* ac   [31:0] data addr   R1  */
+
+  /* Application commands */
+#define SD_APP_SET_BUS_WIDTH      6   /* ac   [1:0] bus width    R1  */
+#define SD_APP_SD_STATUS         13   /* adtc                    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  */
+
+/* OCR bit definitions */
+#define SD_OCR_S18R		(1 << 24)    /* 1.8V switching request */
+#define SD_ROCR_S18A		SD_OCR_S18R  /* 1.8V switching accepted by card */
+#define SD_OCR_XPC		(1 << 28)    /* SDXC power control */
+#define SD_OCR_CCS		(1 << 30)    /* Card Capacity Status */
+
+/*
+ * 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 2.00-3.0X */
+
+/*
+ * 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 /* LINUX_MMC_SD_H */