75 строки
1.8 KiB
C
75 строки
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
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* Copyright (C) 2010 Freescale Semiconductor, Inc.
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*/
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include <linux/platform_data/usb-ehci-mxc.h>
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#include "ehci.h"
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#include "hardware.h"
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#define USBCTRL_OTGBASE_OFFSET 0x600
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#define MX27_OTG_SIC_SHIFT 29
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#define MX27_OTG_SIC_MASK (0x3 << MX27_OTG_SIC_SHIFT)
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#define MX27_OTG_PM_BIT (1 << 24)
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#define MX27_H2_SIC_SHIFT 21
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#define MX27_H2_SIC_MASK (0x3 << MX27_H2_SIC_SHIFT)
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#define MX27_H2_PM_BIT (1 << 16)
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#define MX27_H2_DT_BIT (1 << 5)
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#define MX27_H1_SIC_SHIFT 13
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#define MX27_H1_SIC_MASK (0x3 << MX27_H1_SIC_SHIFT)
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#define MX27_H1_PM_BIT (1 << 8)
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#define MX27_H1_DT_BIT (1 << 4)
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int mx27_initialize_usb_hw(int port, unsigned int flags)
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{
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unsigned int v;
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v = readl(MX27_IO_ADDRESS(MX27_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET));
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switch (port) {
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case 0: /* OTG port */
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v &= ~(MX27_OTG_SIC_MASK | MX27_OTG_PM_BIT);
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v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX27_OTG_SIC_SHIFT;
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if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
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v |= MX27_OTG_PM_BIT;
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break;
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case 1: /* H1 port */
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v &= ~(MX27_H1_SIC_MASK | MX27_H1_PM_BIT | MX27_H1_DT_BIT);
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v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX27_H1_SIC_SHIFT;
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if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
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v |= MX27_H1_PM_BIT;
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if (!(flags & MXC_EHCI_TTL_ENABLED))
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v |= MX27_H1_DT_BIT;
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break;
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case 2: /* H2 port */
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v &= ~(MX27_H2_SIC_MASK | MX27_H2_PM_BIT | MX27_H2_DT_BIT);
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v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX27_H2_SIC_SHIFT;
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if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
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v |= MX27_H2_PM_BIT;
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if (!(flags & MXC_EHCI_TTL_ENABLED))
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v |= MX27_H2_DT_BIT;
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break;
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default:
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return -EINVAL;
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}
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writel(v, MX27_IO_ADDRESS(MX27_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET));
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return 0;
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}
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