blob: 448d9115539d391b7aa8f495a386e38d2f4e5066 [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>
Arnd Bergmann82906b12012-08-24 15:14:29 +020018#include <linux/platform_data/usb-ehci-mxc.h>
Sascha Hauercb076252011-01-03 10:33:01 +010019
Shawn Guo50f2de62012-09-14 14:14:45 +080020#include "hardware.h"
21
Sascha Hauercb076252011-01-03 10:33:01 +010022#define USBCTRL_OTGBASE_OFFSET 0x600
23
24#define MX27_OTG_SIC_SHIFT 29
25#define MX27_OTG_SIC_MASK (0x3 << MX27_OTG_SIC_SHIFT)
26#define MX27_OTG_PM_BIT (1 << 24)
27
28#define MX27_H2_SIC_SHIFT 21
29#define MX27_H2_SIC_MASK (0x3 << MX27_H2_SIC_SHIFT)
30#define MX27_H2_PM_BIT (1 << 16)
31#define MX27_H2_DT_BIT (1 << 5)
32
33#define MX27_H1_SIC_SHIFT 13
34#define MX27_H1_SIC_MASK (0x3 << MX27_H1_SIC_SHIFT)
35#define MX27_H1_PM_BIT (1 << 8)
36#define MX27_H1_DT_BIT (1 << 4)
37
38int mx27_initialize_usb_hw(int port, unsigned int flags)
39{
40 unsigned int v;
41
42 v = readl(MX27_IO_ADDRESS(MX27_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET));
43
44 switch (port) {
45 case 0: /* OTG port */
46 v &= ~(MX27_OTG_SIC_MASK | MX27_OTG_PM_BIT);
47 v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX27_OTG_SIC_SHIFT;
48
49 if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
50 v |= MX27_OTG_PM_BIT;
51 break;
52 case 1: /* H1 port */
53 v &= ~(MX27_H1_SIC_MASK | MX27_H1_PM_BIT | MX27_H1_DT_BIT);
54 v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX27_H1_SIC_SHIFT;
55
56 if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
57 v |= MX27_H1_PM_BIT;
58
59 if (!(flags & MXC_EHCI_TTL_ENABLED))
60 v |= MX27_H1_DT_BIT;
61
62 break;
63 case 2: /* H2 port */
64 v &= ~(MX27_H2_SIC_MASK | MX27_H2_PM_BIT | MX27_H2_DT_BIT);
65 v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX27_H2_SIC_SHIFT;
66
67 if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
68 v |= MX27_H2_PM_BIT;
69
70 if (!(flags & MXC_EHCI_TTL_ENABLED))
71 v |= MX27_H2_DT_BIT;
72
73 break;
74 default:
75 return -EINVAL;
76 }
77
78 writel(v, MX27_IO_ADDRESS(MX27_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET));
79
80 return 0;
81}
82