Messages in this thread | | | Date | Thu, 15 May 2003 10:35:13 -0700 | From | Matt Porter <> | Subject | Re: [PATCH] IRQ and resource for platform_device |
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On Thu, May 15, 2003 at 05:30:52PM +0100, Russell King wrote: > On Thu, May 15, 2003 at 09:03:50AM -0700, Matt Porter wrote: > > On Thu, May 15, 2003 at 02:59:20PM +0100, Russell King wrote: > > > The location and interrupt of some platform devices are only known by > > > platform specific code. In order to avoid putting platform specific > > > parameters into drivers, place resource and irq members into struct > > > platform_device. > > > > > > Discussion point: is one resource and one irq enough? > > > > No. > > > > We have the same need for PPC SoC and system controller on-chip > > devices. Some devices have multiple interrupts and/or resources. > > Is there a sane limit on the number of interrupts and resources for one > device?
As of today, I know of a device that has 5 interrupts and another with 2 interrupts. I believe two resources is the most I've seen so far on a "dumb" on-chip device.
I think having an array of irqs and resources of max count 8 should do it for now.
No matter what we choose, the hardware designers will screw it up eventually.
Regards, -- Matt Porter mporter@kernel.crashing.org - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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