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authorPierre Ossman <drzeus@drzeus.cx>2008-06-28 14:52:45 +0400
committerPierre Ossman <drzeus@drzeus.cx>2008-07-15 16:14:44 +0400
commitad3868b2ec96ec14a1549c9e33f5f9a2a3c6ab15 (patch)
tree05ca55c5ab38b814bf8d71c0720e5dfaf1419e32 /include/linux/mmc/sdio_func.h
parente2d2647702702ea08cb78cdc9eca8c24242aa9be (diff)
downloadlinux-ad3868b2ec96ec14a1549c9e33f5f9a2a3c6ab15.tar.xz
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/sdio_func.h')
-rw-r--r--include/linux/mmc/sdio_func.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/mmc/sdio_func.h b/include/linux/mmc/sdio_func.h
index b050f4d7b41f..f57f22b3be88 100644
--- a/include/linux/mmc/sdio_func.h
+++ b/include/linux/mmc/sdio_func.h
@@ -1,7 +1,7 @@
/*
* include/linux/mmc/sdio_func.h
*
- * Copyright 2007 Pierre Ossman
+ * Copyright 2007-2008 Pierre Ossman
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -120,6 +120,8 @@ extern int sdio_set_block_size(struct sdio_func *func, unsigned blksz);
extern int sdio_claim_irq(struct sdio_func *func, sdio_irq_handler_t *handler);
extern int sdio_release_irq(struct sdio_func *func);
+extern unsigned int sdio_align_size(struct sdio_func *func, unsigned int sz);
+
extern unsigned char sdio_readb(struct sdio_func *func,
unsigned int addr, int *err_ret);
extern unsigned short sdio_readw(struct sdio_func *func,