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Date: Sun, 14 Sep 2008 10:06:43 -0400
From: "Jon Smirl" <jonsmirl@gmail.com>
To: "Roland Dreier" <rdreier@cisco.com>
Subject: Re: demuxing irqs
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How do the virq numbers get assigned?
What do I pass into request_irq when I use one of these pins?

The gpio device...
		gpio_wkup: gpio-wkup@c00 {
			compatible = "fsl,mpc5200b-gpio-wkup","fsl,mpc5200-gpio-wkup";
			reg = <0xc00 0x40>;
			interrupts = <0x1 0x8 0x0 0x0 0x3 0x0>;
			interrupt-parent = <&mpc5200_pic>;
			gpio-controller;
			#gpio-cells = <4>;
		};

use of a gpio from the device...
		ir@0 {
			compatible = "digispeaker,gpio-ir";

			gpios = <&gpio_wkup 0 0 1 0>;
		};


0 - gpio number in the device
0 - enable open drain
1 - class of interrupt, normal or wakeup
0 - type of interrupt, rising, falling, both, pulse


-- 
Jon Smirl
jonsmirl@gmail.com