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https://github.com/adulau/aha.git
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93 lines
2.5 KiB
C
93 lines
2.5 KiB
C
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/*
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* Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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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 <mach/hardware.h>
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#include <mach/mxc_ehci.h>
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#define USBCTRL_OTGBASE_OFFSET 0x600
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#define MX31_OTG_SIC_SHIFT 29
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#define MX31_OTG_SIC_MASK (0xf << MX31_OTG_SIC_SHIFT)
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#define MX31_OTG_PM_BIT (1 << 24)
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#define MX31_H2_SIC_SHIFT 21
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#define MX31_H2_SIC_MASK (0xf << MX31_H2_SIC_SHIFT)
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#define MX31_H2_PM_BIT (1 << 16)
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#define MX31_H2_DT_BIT (1 << 5)
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#define MX31_H1_SIC_SHIFT 13
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#define MX31_H1_SIC_MASK (0xf << MX31_H1_SIC_SHIFT)
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#define MX31_H1_PM_BIT (1 << 8)
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#define MX31_H1_DT_BIT (1 << 4)
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int mxc_set_usbcontrol(int port, unsigned int flags)
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{
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unsigned int v;
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if (cpu_is_mx31()) {
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v = readl(IO_ADDRESS(MX31_OTG_BASE_ADDR +
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USBCTRL_OTGBASE_OFFSET));
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switch (port) {
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case 0: /* OTG port */
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v &= ~(MX31_OTG_SIC_MASK | MX31_OTG_PM_BIT);
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v |= (flags & MXC_EHCI_INTERFACE_MASK)
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<< MX31_OTG_SIC_SHIFT;
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if (flags & MXC_EHCI_POWER_PINS_ENABLED)
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v |= MX31_OTG_PM_BIT;
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break;
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case 1: /* H1 port */
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v &= ~(MX31_H1_SIC_MASK | MX31_H1_PM_BIT);
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v |= (flags & MXC_EHCI_INTERFACE_MASK)
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<< MX31_H1_SIC_SHIFT;
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if (flags & MXC_EHCI_POWER_PINS_ENABLED)
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v |= MX31_H1_PM_BIT;
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if (!(flags & MXC_EHCI_TTL_ENABLED))
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v |= MX31_H1_DT_BIT;
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break;
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case 2: /* H2 port */
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v &= ~(MX31_H2_SIC_MASK | MX31_H2_PM_BIT);
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v |= (flags & MXC_EHCI_INTERFACE_MASK)
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<< MX31_H2_SIC_SHIFT;
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if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
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v |= MX31_H2_PM_BIT;
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if (!(flags & MXC_EHCI_TTL_ENABLED))
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v |= MX31_H2_DT_BIT;
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break;
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}
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writel(v, IO_ADDRESS(MX31_OTG_BASE_ADDR +
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USBCTRL_OTGBASE_OFFSET));
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return 0;
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}
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printk(KERN_WARNING
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"%s() unable to setup USBCONTROL for this CPU\n", __func__);
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return -EINVAL;
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}
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EXPORT_SYMBOL(mxc_set_usbcontrol);
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