diff options
| author | David Brownell <dbrownell@users.sourceforge.net> | 2008-07-21 14:21:34 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-22 09:59:41 -0700 |
| commit | 1673ad52bd9a3c747e596a76e65c55981ea651e3 (patch) | |
| tree | 9e018b1d511a96f745fc870bfdf8bf53759c25ae /drivers/gpio/Kconfig | |
| parent | 0c36ec31473593aa937ff04f3b3b630e81512734 (diff) | |
| download | linux-1673ad52bd9a3c747e596a76e65c55981ea651e3.tar.bz2 | |
gpio: pcf857x: add lock and handle more chips
Two small updates to the pcf857x driver: (a) the max732[89] chips are
also second sources for the pcf8574/a, and (b) add a mutex to prevent
trashing the cached state. Adding the lock is effectively a bugfix,
although it seems unlikely that anyone would have run into the issue it
protects against.
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 'drivers/gpio/Kconfig')
| -rw-r--r-- | drivers/gpio/Kconfig | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 9e0c4fbfc51a..fced1909cbba 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -45,7 +45,7 @@ config GPIO_PCA953X will be called pca953x. config GPIO_PCF857X - tristate "PCF857x, PCA857x, and PCA967x I2C GPIO expanders" + tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" depends on I2C help Say yes here to provide access to most "quasi-bidirectional" I2C @@ -54,7 +54,8 @@ config GPIO_PCF857X some of them. Compatible models include: 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, - pca9670, pca9672, pca9674, pca9674a + pca9670, pca9672, pca9674, pca9674a, + max7328, max7329 16 bits: pcf8575, pcf8575c, pca8575, pca9671, pca9673, pca9675 |