84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
/*
|
|
* Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
|
|
* Copyright (C) 2010 Freescale Semiconductor, Inc.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <linux/platform_device.h>
|
|
#include <linux/io.h>
|
|
#include <linux/platform_data/usb-ehci-mxc.h>
|
|
|
|
#include "ehci.h"
|
|
#include "hardware.h"
|
|
|
|
#define USBCTRL_OTGBASE_OFFSET 0x600
|
|
|
|
#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)
|
|
|
|
int mx31_initialize_usb_hw(int port, unsigned int flags)
|
|
{
|
|
unsigned int v;
|
|
|
|
v = readl(MX31_IO_ADDRESS(MX31_USB_BASE_ADDR + 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;
|
|
}
|
|
|
|
writel(v, MX31_IO_ADDRESS(MX31_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET));
|
|
|
|
return 0;
|
|
}
|