blob: 314a983ac614c49a1a000d85e5a3fe4dc2838106 [file] [log] [blame]
Sascha Hauercb076252011-01-03 10:33:01 +01001/*
2 * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
3 * Copyright (C) 2010 Freescale Semiconductor, Inc.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * for more details.
14 */
15
16#include <linux/platform_device.h>
17#include <linux/io.h>
18
19#include <mach/hardware.h>
20#include <mach/mxc_ehci.h>
21
22#define USBCTRL_OTGBASE_OFFSET 0x600
23
24#define MX31_OTG_SIC_SHIFT 29
25#define MX31_OTG_SIC_MASK (0x3 << MX31_OTG_SIC_SHIFT)
26#define MX31_OTG_PM_BIT (1 << 24)
27
28#define MX31_H2_SIC_SHIFT 21
29#define MX31_H2_SIC_MASK (0x3 << MX31_H2_SIC_SHIFT)
30#define MX31_H2_PM_BIT (1 << 16)
31#define MX31_H2_DT_BIT (1 << 5)
32
33#define MX31_H1_SIC_SHIFT 13
34#define MX31_H1_SIC_MASK (0x3 << MX31_H1_SIC_SHIFT)
35#define MX31_H1_PM_BIT (1 << 8)
36#define MX31_H1_DT_BIT (1 << 4)
37
38int mx31_initialize_usb_hw(int port, unsigned int flags)
39{
40 unsigned int v;
41
42 v = readl(MX31_IO_ADDRESS(MX31_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET));
43
44 switch (port) {
45 case 0: /* OTG port */
46 v &= ~(MX31_OTG_SIC_MASK | MX31_OTG_PM_BIT);
47 v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX31_OTG_SIC_SHIFT;
48
49 if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
50 v |= MX31_OTG_PM_BIT;
51
52 break;
53 case 1: /* H1 port */
54 v &= ~(MX31_H1_SIC_MASK | MX31_H1_PM_BIT | MX31_H1_DT_BIT);
55 v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX31_H1_SIC_SHIFT;
56
57 if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
58 v |= MX31_H1_PM_BIT;
59
60 if (!(flags & MXC_EHCI_TTL_ENABLED))
61 v |= MX31_H1_DT_BIT;
62
63 break;
64 case 2: /* H2 port */
65 v &= ~(MX31_H2_SIC_MASK | MX31_H2_PM_BIT | MX31_H2_DT_BIT);
66 v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX31_H2_SIC_SHIFT;
67
68 if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
69 v |= MX31_H2_PM_BIT;
70
71 if (!(flags & MXC_EHCI_TTL_ENABLED))
72 v |= MX31_H2_DT_BIT;
73
74 break;
75 default:
76 return -EINVAL;
77 }
78
79 writel(v, MX31_IO_ADDRESS(MX31_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET));
80
81 return 0;
82}
83