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authorOhad Ben-Cohen <ohad@wizery.com>2009-09-22 16:45:07 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-23 07:39:36 -0700
commit006ebd5de13854d6250eecc76866bbfad1ff7daf (patch)
tree49cf0715227e1da36745bbb50b6b94f341db3986 /include/linux/mmc
parent653f41b52dfc63fecf4a2333f13be28b159a918c (diff)
sdio: add CD disable support
Add support to disconnect the pull-up resistor on CD/DAT[3] (pin 1) of the card. This may be desired on certain setups of boards, controllers and embedded sdio devices which do not need the card's pull-up. As a result, card detection is disabled and power is saved. [akpm@linux-foundation.org: simplify sdio_disable_cd() a bit] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Acked-by: Matt Fleming <matt@console-pimps.org> Cc: Ian Molton <ian@mnementh.co.uk> Cc: "Roberto A. Foglietta" <roberto.foglietta@gmail.com> Cc: Philip Langdale <philipl@overt.org> Cc: Pierre Ossman <pierre@ossman.eu> Cc: David Vrabel <david.vrabel@csr.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/mmc')
-rw-r--r--include/linux/mmc/card.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 58f59174c64..00db39ccead 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -64,7 +64,8 @@ struct sdio_cccr {
low_speed:1,
wide_bus:1,
high_power:1,
- high_speed:1;
+ high_speed:1,
+ disable_cd:1;
};
struct sdio_cis {