Re: [PATCH 2/3] MFD: twl6040: Allocate IRQ numbers dynamically

Mark Brown
2012-05-04T12:17:35Z

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On Fri, May 04, 2012 at 02:55:37PM +0300, Peter Ujfalusi wrote:
> On 05/04/2012 02:22 PM, Mark Brown wrote:
> >> The OMAP platform related drives has been already converted to use
> >> irq_alloc_descs(-1, 0, nr_irqs, 0); to map their range (including GPIO,
> >> twl6030, etc).

> > How does this work for interrupts on things like SPI and I2C devices?

> You mean on devices like twl6040, twl6030, twl4030 (I2C MFD devices)?
> Or "irq expander" type of devices?

The latter, and also just any driver that delivers an interrupt via a
GPIO on OMAP - if the GPIO IRQ numbers are all dynamically allocated
then it gets hard to register an off-chip device and tell it which
interrupt to request.

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