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authorDavid Brownell <david-b@pacbell.net>2008-07-04 09:59:37 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-04 10:40:06 -0700
commit7059d4b08eba2ad046395a04b02e34ca27304d8f (patch)
tree47fbdbec332d2fea3b24f984f08237f92cdfcd2d
parentda9eac8990dc614ab4756f2a3d84870b675f1f1e (diff)
downloadop-kernel-dev-7059d4b08eba2ad046395a04b02e34ca27304d8f.zip
op-kernel-dev-7059d4b08eba2ad046395a04b02e34ca27304d8f.tar.gz
gpio: pca953x (i2c) handles max7310 too
The pca953x driver can handle another 8-bit I/O expander, the max7310. This patch adds that chip to the list of supported IDs in that driver, and expands the Kconfig helptext accordingly. 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>
-rw-r--r--drivers/gpio/Kconfig14
-rw-r--r--drivers/gpio/pca953x.c2
2 files changed, 11 insertions, 5 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index bbd2834..008c38b 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -28,12 +28,18 @@ config DEBUG_GPIO
comment "I2C GPIO expanders:"
config GPIO_PCA953X
- tristate "PCA953x I/O ports"
+ tristate "PCA953x, PCA955x, and MAX7310 I/O ports"
depends on I2C
help
- Say yes here to support the PCA9534 (8-bit), PCA9535 (16-bit),
- PCA9536 (4-bit), PCA9537 (4-bit), PCA9538 (8-bit), and PCA9539
- (16-bit) I/O ports. These parts are made by NXP and TI.
+ Say yes here to provide access to several register-oriented
+ SMBus I/O expanders, made mostly by NXP or TI. Compatible
+ models include:
+
+ 4 bits: pca9536, pca9537
+
+ 8 bits: max7310, pca9534, pca9538, pca9554, pca9557
+
+ 16 bits: pca9535, pca9539, pca9555
This driver can also be built as a module. If so, the module
will be called pca953x.
diff --git a/drivers/gpio/pca953x.c b/drivers/gpio/pca953x.c
index 7e40e8a..a380730 100644
--- a/drivers/gpio/pca953x.c
+++ b/drivers/gpio/pca953x.c
@@ -33,7 +33,7 @@ static const struct i2c_device_id pca953x_id[] = {
{ "pca9554", 8, },
{ "pca9555", 16, },
{ "pca9557", 8, },
- /* REVISIT several pca955x parts should work here too */
+ { "max7310", 8, },
{ }
};
MODULE_DEVICE_TABLE(i2c, pca953x_id);
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