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authorPierre Ossman <drzeus@drzeus.cx>2007-05-22 22:25:21 +0400
committerPierre Ossman <drzeus@drzeus.cx>2007-09-23 21:42:37 +0400
commitb2bcc798bbb482b2909801280f3c4aff8cbbf5be (patch)
tree74b1b4e6876fbc7187f67cc2b36ed03ae7c59acc /include/linux/mmc
parent5c4e6f1301649d5b29dd0f70e6da83e728ab5ca5 (diff)
downloadlinux-b2bcc798bbb482b2909801280f3c4aff8cbbf5be.tar.xz
mmc: implement SDIO IO_RW_DIRECT operation
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Diffstat (limited to 'include/linux/mmc')
-rw-r--r--include/linux/mmc/core.h1
-rw-r--r--include/linux/mmc/sdio.h34
2 files changed, 35 insertions, 0 deletions
diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h
index 8faa436c5571..43a92736be63 100644
--- a/include/linux/mmc/core.h
+++ b/include/linux/mmc/core.h
@@ -42,6 +42,7 @@ struct mmc_command {
#define MMC_RSP_R2 (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC)
#define MMC_RSP_R3 (MMC_RSP_PRESENT)
#define MMC_RSP_R4 (MMC_RSP_PRESENT)
+#define MMC_RSP_R5 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
#define MMC_RSP_R6 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
#define MMC_RSP_R7 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
diff --git a/include/linux/mmc/sdio.h b/include/linux/mmc/sdio.h
index d1a0b15cdfdf..e5f06de7d527 100644
--- a/include/linux/mmc/sdio.h
+++ b/include/linux/mmc/sdio.h
@@ -14,6 +14,40 @@
/* SDIO commands type argument response */
#define SD_IO_SEND_OP_COND 5 /* bcr [23:0] OCR R4 */
+#define SD_IO_RW_DIRECT 52 /* ac [31:0] See below R5 */
+
+/*
+ * SD_IO_RW_DIRECT argument format:
+ *
+ * [31] R/W flag
+ * [30:28] Function number
+ * [27] RAW flag
+ * [25:9] Register address
+ * [7:0] Data
+ */
+
+/*
+ SDIO status in R5
+ Type
+ e : error bit
+ s : status bit
+ r : detected and set for the actual command response
+ x : detected and set during command execution. the host must poll
+ the card by sending status command in order to read these bits.
+ Clear condition
+ a : according to the card state
+ b : always related to the previous command. Reception of
+ a valid command will clear it (with a delay of one command)
+ c : clear by read
+ */
+
+#define R5_COM_CRC_ERROR (1 << 15) /* er, b */
+#define R5_ILLEGAL_COMMAND (1 << 14) /* er, b */
+#define R5_ERROR (1 << 11) /* erx, c */
+#define R5_FUNCTION_NUMBER (1 << 9) /* er, c */
+#define R5_OUT_OF_RANGE (1 << 8) /* er, c */
+#define R5_STATUS(x) (x & 0xCB00)
+#define R5_IO_CURRENT_STATE(x) ((x & 0x3000) >> 12) /* s, b */
#endif