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/*
* Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <common.h>
#include <usb.h>
#include <asm/io.h>
#include <asm/arch/imx-regs.h>
#include <usb/ehci-fsl.h>
#include <errno.h>
#include "ehci.h"
#include "ehci-core.h"
#define USBCTRL_OTGBASE_OFFSET 0x600
#ifdef CONFIG_MX25
#define MX25_USB_CTRL_IP_PUE_DOWN_BIT (1<<6)
#define MX25_USB_CTRL_HSTD_BIT (1<<5)
#define MX25_USB_CTRL_USBTE_BIT (1<<4)
#define MX25_USB_CTRL_OCPOL_OTG_BIT (1<<3)
#endif
#ifdef CONFIG_MX31
#define MX31_OTG_SIC_SHIFT 29
#define MX31_OTG_SIC_MASK (0x3 << MX31_OTG_SIC_SHIFT)
#define MX31_OTG_PM_BIT (1 << 24)
#define MX31_H2_SIC_SHIFT 21
#define MX31_H2_SIC_MASK (0x3 << MX31_H2_SIC_SHIFT)
#define MX31_H2_PM_BIT (1 << 16)
#define MX31_H2_DT_BIT (1 << 5)
#define MX31_H1_SIC_SHIFT 13
#define MX31_H1_SIC_MASK (0x3 << MX31_H1_SIC_SHIFT)
#define MX31_H1_PM_BIT (1 << 8)
#define MX31_H1_DT_BIT (1 << 4)
#endif
static int mxc_set_usbcontrol(int port, unsigned int flags)
{
unsigned int v;
#ifdef CONFIG_MX25
v = MX25_USB_CTRL_IP_PUE_DOWN_BIT | MX25_USB_CTRL_HSTD_BIT |
MX25_USB_CTRL_USBTE_BIT | MX25_USB_CTRL_OCPOL_OTG_BIT;
#endif
#ifdef CONFIG_MX31
v = readl(IMX_USB_BASE + USBCTRL_OTGBASE_OFFSET);
switch (port) {
case 0: /* OTG port */
v &= ~(MX31_OTG_SIC_MASK | MX31_OTG_PM_BIT);
v |= (flags & MXC_EHCI_INTERFACE_MASK)
<< MX31_OTG_SIC_SHIFT;
if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
v |= MX31_OTG_PM_BIT;
break;
case 1: /* H1 port */
v &= ~(MX31_H1_SIC_MASK | MX31_H1_PM_BIT |
MX31_H1_DT_BIT);
v |= (flags & MXC_EHCI_INTERFACE_MASK)
<< MX31_H1_SIC_SHIFT;
if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
v |= MX31_H1_PM_BIT;
if (!(flags & MXC_EHCI_TTL_ENABLED))
v |= MX31_H1_DT_BIT;
break;
case 2: /* H2 port */
v &= ~(MX31_H2_SIC_MASK | MX31_H2_PM_BIT |
MX31_H2_DT_BIT);
v |= (flags & MXC_EHCI_INTERFACE_MASK)
<< MX31_H2_SIC_SHIFT;
if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
v |= MX31_H2_PM_BIT;
if (!(flags & MXC_EHCI_TTL_ENABLED))
v |= MX31_H2_DT_BIT;
break;
default:
return -EINVAL;
}
#endif
writel(v, IMX_USB_BASE + USBCTRL_OTGBASE_OFFSET);
return 0;
}
int ehci_hcd_init(void)
{
struct usb_ehci *ehci;
#ifdef CONFIG_MX31
u32 tmp;
struct clock_control_regs *sc_regs =
(struct clock_control_regs *)CCM_BASE;
tmp = __raw_readl(&sc_regs->ccmr);
__raw_writel(__raw_readl(&sc_regs->ccmr) | (1 << 9), &sc_regs->ccmr) ;
#endif
udelay(80);
/* Take USB2 */
ehci = (struct usb_ehci *)(IMX_USB_BASE +
(0x200 * CONFIG_MXC_USB_PORT));
hccr = (struct ehci_hccr *)((uint32_t)&ehci->caplength);
hcor = (struct ehci_hcor *)((uint32_t) hccr +
HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
setbits_le32(&ehci->usbmode, CM_HOST);
#ifdef CONFIG_MX31
setbits_le32(&ehci->control, USB_EN);
__raw_writel(CONFIG_MXC_USB_PORTSC, &ehci->portsc);
#endif
mxc_set_usbcontrol(CONFIG_MXC_USB_PORT, CONFIG_MXC_USB_FLAGS);
udelay(10000);
return 0;
}
/*
* Destroy the appropriate control structures corresponding
* the the EHCI host controller.
*/
int ehci_hcd_stop(void)
{
return 0;
}
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