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| author | Marc Zyngier <maz@misterjones.org> | 2010-03-05 13:44:36 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-06 11:26:48 -0800 |
| commit | 89ea8bbe9c3eb2ea0cb57a4ecf283cab7326f0b0 (patch) | |
| tree | f06f9594be6e64699ae3d8672d4868b81e25cfa7 /drivers/gpio/Kconfig | |
| parent | 8c35c89aa3d7e0f253c3a10456a8b075288b4565 (diff) | |
| download | blackbird-op-linux-89ea8bbe9c3eb2ea0cb57a4ecf283cab7326f0b0.tar.gz blackbird-op-linux-89ea8bbe9c3eb2ea0cb57a4ecf283cab7326f0b0.zip | |
gpio: pca953x.c: add interrupt handling capability
Most of the GPIO expanders controlled by the pca953x driver are able to
report changes on the input pins through an *INT pin.
This patch implements the irq_chip functionality (edge detection only).
The driver has been tested on an Arcom Zeus.
[akpm@linux-foundation.org: the compiler does inlining for us nowadays]
Signed-off-by: Marc Zyngier <maz@misterjones.org>
Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: David Brownell <david-b@pacbell.net>
Cc: Nate Case <ncase@xes-inc.com>
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 | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index f3549b8779d8..c5cc7d9d88e3 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -134,6 +134,13 @@ config GPIO_PCA953X This driver can also be built as a module. If so, the module will be called pca953x. +config GPIO_PCA953X_IRQ + bool "Interrupt controller support for PCA953x" + depends on GPIO_PCA953X=y + help + Say yes here to enable the pca953x to be used as an interrupt + controller. It requires the driver to be built in the kernel. + config GPIO_PCF857X tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" depends on I2C |
