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[MMC] Add MMC command type flags

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Some hosts need to know the command type, so pass it via a set of
flags in cmd->flags.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2006-02-02 12:23:12 +00:00 • committed by Russell King
parent a6df590dd8
commit e92251762d
8 changed files with 81 additions and 73 deletions
Download patch file Download diff file Expand all files Collapse all files

35
include/linux/mmc/mmc.h
View file

@ -21,24 +21,35 @@ struct mmc_command {
u32 arg;
u32 resp[4];
unsigned int flags; /* expected response type */
#define MMC_RSP_NONE (0 << 0)
#define MMC_RSP_SHORT (1 << 0)
#define MMC_RSP_LONG (2 << 0)
#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 */
#define MMC_RSP_PRESENT (1 << 0)
#define MMC_RSP_136 (1 << 1) /* 136 bit response */
#define MMC_RSP_CRC (1 << 2) /* expect valid crc */
#define MMC_RSP_BUSY (1 << 3) /* card may send busy */
#define MMC_RSP_OPCODE (1 << 4) /* response contains opcode */
#define MMC_CMD_MASK (3 << 5) /* command type */
#define MMC_CMD_AC (0 << 5)
#define MMC_CMD_ADTC (1 << 5)
#define MMC_CMD_BC (2 << 5)
#define MMC_CMD_BCR (3 << 5)
/*
* 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|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)
#define MMC_RSP_NONE (0)
#define MMC_RSP_R1 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
#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_R6 (MMC_RSP_PRESENT|MMC_RSP_CRC)
#define mmc_resp_type(cmd) ((cmd)->flags & (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC|MMC_RSP_BUSY|MMC_RSP_OPCODE))
/*
* These are the command types.
*/
#define mmc_cmd_type(cmd) ((cmd)->flags & MMC_CMD_TYPE)
unsigned int retries; /* max number of retries */
unsigned int error; /* command error */

2
include/linux/mmc/protocol.h
View file

@ -79,7 +79,7 @@
/* SD commands type argument response */
/* class 8 */
/* This is basically the same command as for MMC with some quirks. */
#define SD_SEND_RELATIVE_ADDR 3 /* ac R6 */
#define SD_SEND_RELATIVE_ADDR 3 /* bcr R6 */
/* Application commands */
#define SD_APP_SET_BUS_WIDTH 6 /* ac [1:0] bus width R1 */