Re: [PATH] ppc32: Add usb support to IBM stb04xxx platforms
From: Eugene Surovegin <hidden>
Date: 2005-08-09 19:03:21
On Tue, Aug 09, 2005 at 11:53:27AM -0700, Dale Farnsworth wrote: [snip]
quoted hunk ↗ jump to hunk
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