LXR uboot/drivers/usb/host/ehci-atmel.c

   1/*
   2 * (C) Copyright 2012
   3 * Atmel Semiconductor <www.atmel.com>
   4 * Written-by: Bo Shen <voice.shen@atmel.com>
   5 *
   6 * SPDX-License-Identifier:     GPL-2.0+
   7 */
   8
   9#include <common.h>
  10#include <usb.h>
  11#include <asm/io.h>
  12#include <asm/arch/clk.h>
  13
  14#include "ehci.h"
  15
  16int ehci_hcd_init(int index, enum usb_init_type init,
  17                struct ehci_hccr **hccr, struct ehci_hcor **hcor)
  18{
  19        /* Enable UTMI PLL */
  20        if (at91_upll_clk_enable())
  21                return -1;
  22
  23        /* Enable USB Host clock */
  24        at91_periph_clk_enable(ATMEL_ID_UHPHS);
  25
  26        *hccr = (struct ehci_hccr *)ATMEL_BASE_EHCI;
  27        *hcor = (struct ehci_hcor *)((uint32_t)*hccr +
  28                        HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
  29
  30        return 0;
  31}
  32
  33int ehci_hcd_stop(int index)
  34{
  35        /* Disable USB Host Clock */
  36        at91_periph_clk_disable(ATMEL_ID_UHPHS);
  37
  38        /* Disable UTMI PLL */
  39        if (at91_upll_clk_disable())
  40                return -1;
  41
  42        return 0;
  43}
  44