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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 /include/linux/i2c | |
| parent | 8c35c89aa3d7e0f253c3a10456a8b075288b4565 (diff) | |
| download | linux-89ea8bbe9c3eb2ea0cb57a4ecf283cab7326f0b0.tar.gz linux-89ea8bbe9c3eb2ea0cb57a4ecf283cab7326f0b0.tar.bz2 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 'include/linux/i2c')
| -rw-r--r-- | include/linux/i2c/pca953x.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/i2c/pca953x.h b/include/linux/i2c/pca953x.h index 29699f8dc5a4..d5c5a60c8a0b 100644 --- a/include/linux/i2c/pca953x.h +++ b/include/linux/i2c/pca953x.h @@ -13,6 +13,9 @@ struct pca953x_platform_data { /* initial polarity inversion setting */ uint16_t invert; + /* interrupt base */ + int irq_base; + void *context; /* param to setup/teardown */ int (*setup)(struct i2c_client *client, |