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PXA USB OHCI: "usb stop" implementation.

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Some USB keys need to be switched off before loading the kernel
otherwise they can remain in an undefined status which prevents them
to be correctly recognized by the kernel.

Signed-off-by: Rodolfo Giometti <giometti@linux.it>
This commit is contained in:
Rodolfo Giometti 2007-10-15 11:59:17 +02:00 committed by Wolfgang Denk
parent f8bf90461d
commit 4d4a945e18
1 changed files with 16 additions and 0 deletions
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16
cpu/pxa/usb.c
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@ -67,6 +67,22 @@ int usb_cpu_init()
int usb_cpu_stop()
{
UHCHR |= UHCHR_FHR;
udelay(11);
UHCHR &= ~UHCHR_FHR;
UHCCOMS |= 1;
udelay(10);
#if defined(CONFIG_CPU_MONAHANS)
UHCHR |= UHCHR_SSEP0;
#endif
#if defined(CONFIG_PXA27X)
UHCHR |= UHCHR_SSEP2;
#endif
UHCHR |= UHCHR_SSEP1;
UHCHR |= UHCHR_SSE;
return 0;
}