u-boot/drivers/usb/host/ehci-fsl.c

/*
 * (C) Copyright 2009 Freescale Semiconductor, Inc.
 *
 * (C) Copyright 2008, Excito Elektronik i Sk=E5ne AB
 *
 * Author: Tor Krill tor@excito.com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <pci.h>
#include <usb.h>
#include <asm/io.h>
#include <usb/ehci-fsl.h>

#include "ehci.h"
#include "ehci-core.h"

/*
 * Create the appropriate control structures to manage
 * a new EHCI host controller.
 *
 * Excerpts from linux ehci fsl driver.
 */
int ehci_hcd_init(void)
{
	struct usb_ehci *ehci;

	ehci = (struct usb_ehci *)CONFIG_SYS_MPC8xxx_USB_ADDR;
	hccr = (struct ehci_hccr *)((uint32_t)&ehci->caplength);
	hcor = (struct ehci_hcor *)((uint32_t) hccr +
			HC_LENGTH(ehci_readl(&hccr->cr_capbase)));

	/* Set to Host mode */
	setbits_le32(&ehci->usbmode, CM_HOST);

	out_be32(&ehci->snoop1, SNOOP_SIZE_2GB);
	out_be32(&ehci->snoop2, 0x80000000 | SNOOP_SIZE_2GB);

	/* Init phy */
	if (!strcmp(getenv("usb_phy_type"), "utmi"))
		out_le32(&(hcor->or_portsc[0]), PORT_PTS_UTMI);
	else
		out_le32(&(hcor->or_portsc[0]), PORT_PTS_ULPI);

	/* Enable interface. */
	setbits_be32(&ehci->control, USB_EN);

	out_be32(&ehci->prictrl, 0x0000000c);
	out_be32(&ehci->age_cnt_limit, 0x00000040);
	out_be32(&ehci->sictrl, 0x00000001);

	in_le32(&ehci->usbmode);

	return 0;
}

/*
 * Destroy the appropriate control structures corresponding
 * the the EHCI host controller.
 */
int ehci_hcd_stop(void)
{
	return 0;
}