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authorAnton Vorontsov <avorontsov@ru.mvista.com>2008-04-28 02:14:47 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-28 08:58:34 -0700
commit169b6a7a6e91e1ea32136681b475cbaf2074bf35 (patch)
treebf29842528e61cb07c581e43acbe3619a25746ab /include
parent8d0aab2f16c4fa170f32e7a74a52cd0122bbafef (diff)
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gpiochip_reserve()
Add a new function gpiochip_reserve() to reserve ranges of gpios that platform code has pre-allocated. That is, this marks gpio numbers which will be claimed by drivers that haven't yet been loaded, and thus are not available for dynamic gpio number allocation. [akpm@linux-foundation.org: remove unneeded __must_check] [david-b@pacbell.net: don't export gpiochip_reserve (section fix)] Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> 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/asm-generic/gpio.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index 464c5b334dc..ecf675a59d2 100644
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -74,6 +74,7 @@ struct gpio_chip {
extern const char *gpiochip_is_requested(struct gpio_chip *chip,
unsigned offset);
+extern int __init __must_check gpiochip_reserve(int start, int ngpio);
/* add/remove chips */
extern int gpiochip_add(struct gpio_chip *chip);