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/*
* (C) Copyright 2009, 2011 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 <hwconfig.h>
#include "ehci.h"
/* Check USB PHY clock valid */
static int usb_phy_clk_valid(struct usb_ehci *ehci)
{
if (!((in_be32(&ehci->control) & PHY_CLK_VALID) ||
in_be32(&ehci->prictrl))) {
printf("USB PHY clock invalid!\n");
return 0;
} else {
return 1;
}
}
/*
* Create the appropriate control structures to manage
* a new EHCI host controller.
*
* Excerpts from linux ehci fsl driver.
*/
int ehci_hcd_init(int index, struct ehci_hccr **hccr, struct ehci_hcor **hcor)
{
struct usb_ehci *ehci;
const char *phy_type = NULL;
size_t len;
#ifdef CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY
char usb_phy[5];
usb_phy[0] = '\0';
#endif
ehci = (struct usb_ehci *)CONFIG_SYS_FSL_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 (hwconfig_sub("usb1", "phy_type"))
phy_type = hwconfig_subarg("usb1", "phy_type", &len);
else
phy_type = getenv("usb_phy_type");
if (!phy_type) {
#ifdef CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY
/* if none specified assume internal UTMI */
strcpy(usb_phy, "utmi");
phy_type = usb_phy;
#else
printf("WARNING: USB phy type not defined !!\n");
return -1;
#endif
}
if (!strcmp(phy_type, "utmi")) {
#if defined(CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY)
setbits_be32(&ehci->control, PHY_CLK_SEL_UTMI);
setbits_be32(&ehci->control, UTMI_PHY_EN);
udelay(1000); /* delay required for PHY Clk to appear */
#endif
out_le32(&(*hcor)->or_portsc[0], PORT_PTS_UTMI);
setbits_be32(&ehci->control, USB_EN);
} else {
setbits_be32(&ehci->control, PHY_CLK_SEL_ULPI);
clrsetbits_be32(&ehci->control, UTMI_PHY_EN, USB_EN);
udelay(1000); /* delay required for PHY Clk to appear */
if (!usb_phy_clk_valid(ehci))
return -EINVAL;
out_le32(&(*hcor)->or_portsc[0], PORT_PTS_ULPI);
}
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(int index)
{
return 0;
}
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