diff options
| author | Andrei Warkentin <andreiw@motorola.com> | 2011-05-23 15:06:36 -0500 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2011-05-25 16:48:46 -0400 |
| commit | d0c97cfb81ebc5b416c0f92fa2fc18d2773e3023 (patch) | |
| tree | dbf0fa49bdad896d283a7f392c156483d9687d4b /include/linux/mmc/mmc.h | |
| parent | c59de9287993b5c36f9005f745a3ce0b1008131d (diff) | |
mmc: core: Use CMD23 for multiblock transfers when we can.
CMD23-prefixed instead of open-ended multiblock transfers
have a performance advantage on some MMC cards.
Signed-off-by: Andrei Warkentin <andreiw@motorola.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'include/linux/mmc/mmc.h')
| -rw-r--r-- | include/linux/mmc/mmc.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h index 9fa5a73f393d..ac26a685cca8 100644 --- a/include/linux/mmc/mmc.h +++ b/include/linux/mmc/mmc.h @@ -83,6 +83,12 @@ #define MMC_APP_CMD 55 /* ac [31:16] RCA R1 */ #define MMC_GEN_CMD 56 /* adtc [0] RD/WR R1 */ +static inline bool mmc_op_multi(u32 opcode) +{ + return opcode == MMC_WRITE_MULTIPLE_BLOCK || + opcode == MMC_READ_MULTIPLE_BLOCK; +} + /* * MMC_SWITCH argument format: * |