cs5535-gpio: don't apply errata #36 to edge detect GPIOs

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The edge detect status GPIOs function differently from the other atomic
model CS5536 GPIO registers; writing 1 to the high bits clears the GPIO,
but writing 1 to the lower bits also clears the bit.

This means that read-modify-write doesn't actually work for it, so don't
apply the errata here.  If a negative edge status gets lost after
resume..  well, we tried our best!

Tested-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

...

This commit is contained in:

Andres Salomon 2010-12-21 13:04:42 -08:00 • committed by Linus Torvalds

parent e819eb8687

commit 0018516593

1 changed files with 11 additions and 4 deletions

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drivers/gpio/cs5535-gpio.c

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