diff options
| author | Ohad Ben-Cohen <ohad@wizery.com> | 2009-09-22 16:45:07 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-23 07:39:36 -0700 |
| commit | 006ebd5de13854d6250eecc76866bbfad1ff7daf (patch) | |
| tree | 49cf0715227e1da36745bbb50b6b94f341db3986 /include | |
| parent | 653f41b52dfc63fecf4a2333f13be28b159a918c (diff) | |
| download | lwn-006ebd5de13854d6250eecc76866bbfad1ff7daf.tar.gz lwn-006ebd5de13854d6250eecc76866bbfad1ff7daf.zip | |
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')
| -rw-r--r-- | include/linux/mmc/card.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 58f59174c64b..00db39cceadc 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 { |