On Monday 10 December 2007, eric miao wrote:
> +config GPIO_PCA9539_GENERIC_IRQ
> + bool " Generic IRQ support for PCA9539"
> + depends on GPIO_PCA9539=y
Also depends on GENERIC_HARDIRQS, right? (You should let
the Kconfig UI handle indentation, too...)
Seems like doing this for an I2C chip ought to shake loose
some interesting review comments. :)
> + help
> + Say yes here to support the Generic IRQ for the PCA9539 on-chip
> + GPIO lines.
This somewhat resembles the pcf857x chips in that it only support
pin-changed IRQs (IRQ_TYPE_EDGE_BOTH) in hardware. Some other I/O
expanders are a bit more flexible.
- Dave
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