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From: "Guillaume Dargaud" <dargaud@lpsc.in2p3.fr>
To: <linuxppc-dev@ozlabs.org>
Subject: Re: Using GPIO
Date: Mon, 19 May 2008 17:23:07 +0200
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arch/ppc/syslib/virtex_devices.c:

> // 0 is LEDS_4BIT, 1 is LEDS_POSITIONS, 2 is PUSH_BUTTONS_POSITION
> #define XPAR_GPIO(num) { \
>    .name = "xilinx_gpio", \
>    .id = num, \
>    .num_resources = 2, \
That was a 2.
If anybody wants to make a patch out of those few lines of code, I couldn't 
figure out how to do this with git... But I will use a more general GPIO 
approach as soon as I can put my hands on our custom card.

>    .resource = (struct resource[]) { \
>        { \
>            .start = XPAR_GPIO_##num##_BASEADDR, \
>            .end = XPAR_GPIO_##num##_HIGHADDR, \
>            .flags = IORESOURCE_MEM, \
>        }, \
>        { \
>            .start = XPAR_INTC_0_GPIO_##num##_VEC_ID, \
>            .flags = IORESOURCE_IRQ, \
>        }, \
>    }, \
> }
> [...]
>      /* GPIO instances */
> #if defined(XPAR_GPIO_0_BASEADDR)
>      XPAR_GPIO(0),
> #endif
> #if defined(XPAR_GPIO_1_BASEADDR)
>      XPAR_GPIO(1),
> #endif
> #if defined(XPAR_GPIO_2_BASEADDR)
>      XPAR_GPIO(2),
> #endif

-- 
Guillaume Dargaud
http://www.gdargaud.net/