int usb_cpu_stop(void)
{
at91_pmc_t *pmc = (at91_pmc_t *)ATMEL_BASE_PMC;
/* Disable USB host clock. */
#ifdef CPU_HAS_PCR
at91_periph_clk_disable(ATMEL_ID_UHP);
#else
writel(1 << ATMEL_ID_UHP, &pmc->pcdr);
#endif
#if defined(CONFIG_AT91SAM9261) || defined(CONFIG_AT91SAM9G10)
writel(ATMEL_PMC_UHP | AT91_PMC_HCK0, &pmc->scdr);
#else
writel(ATMEL_PMC_UHP, &pmc->scdr);
#endif
#ifdef CONFIG_USB_ATMEL_CLK_SEL_PLLB
#ifdef CONFIG_AT91SAM9N12
writel(0, &pmc->usb);
#endif
/* Disable PLLB */
writel(0, &pmc->pllbr);
while ((readl(&pmc->sr) & AT91_PMC_LOCKB) != 0)
;
#elif defined(CONFIG_USB_ATMEL_CLK_SEL_UPLL)
/* Disable UPLL */
writel(readl(&pmc->uckr) & (~AT91_PMC_UPLLEN), &pmc->uckr);
while ((readl(&pmc->sr) & AT91_PMC_LOCKU) == AT91_PMC_LOCKU)
;
#endif
return 0;
}
int ehci_hcd_stop(int index)
{
/* Disable USB Host Clock */
at91_periph_clk_disable(ATMEL_ID_UHPHS);
/* Disable UTMI PLL */
if (at91_upll_clk_disable())
return -1;
return 0;
}
