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Commit 7225b3fd authored by Pierre Ossman's avatar Pierre Ossman Committed by Russell King
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[MMC] Indicate that R1/R1b contains command opcode 



Some controllers actually check the first byte of the response (most
don't).  This byte contains the command opcode for R1/R1b and all 1:s
for other types. The difference must be indicated to the controller
so it knows which reply to expect.

Signed-off-by: default avatarPierre Ossman <drzeus@drzeus.cx>
parent 788ee7b0

include/linux/mmc/mmc.h

+3 −2
Original line number Diff line number Diff line
@@ -27,14 +27,15 @@ struct mmc_command { 
#define MMC_RSP_MASK	(3 << 0)

#define MMC_RSP_CRC	(1 << 3)		/* expect valid crc */

#define MMC_RSP_BUSY	(1 << 4)		/* card may send busy */

#define MMC_RSP_OPCODE	(1 << 5)		/* response contains opcode */



/*

 * These are the response types, and correspond to valid bit

 * patterns of the above flags.  One additional valid pattern

 * is all zeros, which means we don't expect a response.

 */

#define MMC_RSP_R1	(MMC_RSP_SHORT|MMC_RSP_CRC)

#define MMC_RSP_R1B	(MMC_RSP_SHORT|MMC_RSP_CRC|MMC_RSP_BUSY)

#define MMC_RSP_R1	(MMC_RSP_SHORT|MMC_RSP_CRC|MMC_RSP_OPCODE)

#define MMC_RSP_R1B	(MMC_RSP_SHORT|MMC_RSP_CRC|MMC_RSP_OPCODE|MMC_RSP_BUSY)

#define MMC_RSP_R2	(MMC_RSP_LONG|MMC_RSP_CRC)

#define MMC_RSP_R3	(MMC_RSP_SHORT)

#define MMC_RSP_R6	(MMC_RSP_SHORT|MMC_RSP_CRC)