Hi! > The PCA955x family of chips are I2C LED blinkers whose pins not used > to control LEDs can be used as general purpose I/Os (GPIOs). > > The following adds support for device tree and Open Firmware to be > able do define different operation modes for each pin. See bindings > documentation for more details. The pca955x driver is then extended > with a gpio_chip when pins are operating in GPIO mode. > > The driver follows the scheme of the leds-pca9532 driver which behaves > quite similarly. Is there reason not to treat pca955x chip as a GPIO extender, and then use leds-gpio on top? Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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