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| author | Pierre Ossman <drzeus@drzeus.cx> | 2008-06-28 12:52:45 +0200 |
|---|---|---|
| committer | Pierre Ossman <drzeus@drzeus.cx> | 2008-07-15 14:14:44 +0200 |
| commit | ad3868b2ec96ec14a1549c9e33f5f9a2a3c6ab15 (patch) | |
| tree | 05ca55c5ab38b814bf8d71c0720e5dfaf1419e32 /include/linux/mmc/core.h | |
| parent | e2d2647702702ea08cb78cdc9eca8c24242aa9be (diff) | |
| download | kernel_goldelico_gta04-ad3868b2ec96ec14a1549c9e33f5f9a2a3c6ab15.zip kernel_goldelico_gta04-ad3868b2ec96ec14a1549c9e33f5f9a2a3c6ab15.tar.gz kernel_goldelico_gta04-ad3868b2ec96ec14a1549c9e33f5f9a2a3c6ab15.tar.bz2 | |
mmc,sdio: helper function for transfer padding
There are a lot of crappy controllers out there that cannot handle
all the request sizes that the MMC/SD/SDIO specifications require.
In case the card driver can pad the data to overcome the problems,
this commit adds a helper that calculates how much that padding
should be.
A corresponding helper is also added for SDIO, but it can also deal
with all the complexities of splitting up a large transfer efficiently.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Diffstat (limited to 'include/linux/mmc/core.h')
| -rw-r--r-- | include/linux/mmc/core.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h index d0c3abe..143cebf 100644 --- a/include/linux/mmc/core.h +++ b/include/linux/mmc/core.h @@ -135,6 +135,7 @@ extern int mmc_wait_for_app_cmd(struct mmc_host *, struct mmc_card *, struct mmc_command *, int); extern void mmc_set_data_timeout(struct mmc_data *, const struct mmc_card *); +extern unsigned int mmc_align_data_size(struct mmc_card *, unsigned int); extern int __mmc_claim_host(struct mmc_host *host, atomic_t *abort); extern void mmc_release_host(struct mmc_host *host); |