On Tue, Aug 09, 2005 at 11:53:27AM -0700, Dale Farnsworth wrote:
[snip]
> Index: linux-2.5-usb-405/arch/ppc/platforms/4xx/redwood5.c
> ===================================================================
> --- linux-2.5-usb-405.orig/arch/ppc/platforms/4xx/redwood5.c
> +++ linux-2.5-usb-405/arch/ppc/platforms/4xx/redwood5.c
> @@ -52,8 +52,18 @@
> void __init
> redwood5_setup_arch(void)
> {
> + u32 mask;
> +
> ppc4xx_setup_arch();
>
> + /*
> + * Set up USB interrupt as positive polarity and level-sensitive.
> + * Firmware should do this, but apparently does not.
> + */
> + mask = 1 << (31 - USB0_IRQ);
> + mtdcr(DCRN_UIC_PR(UIC0), mfdcr(DCRN_UIC_PR(UIC0)) | mask);
> + mtdcr(DCRN_UIC_TR(UIC0), mfdcr(DCRN_UIC_TR(UIC0)) & ~mask);
> +
Please, DO NOT DO THIS.
There is a way to configure UIC settings without messing with UIC
registers directly. Refer to asm-ppc/ppc4xx_pic.h and other 4xx board
ports for more information.
--
Eugene
