mmc: detect SDIO cards
Really basic init sequence for SDIO cards.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h
index 29c98ae..8faa436 100644
--- a/include/linux/mmc/core.h
+++ b/include/linux/mmc/core.h
@@ -41,6 +41,7 @@
#define MMC_RSP_R1B (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE|MMC_RSP_BUSY)
#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_R6 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
#define MMC_RSP_R7 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)