1/*
 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#include <linux/platform_data/usb-ehci-mxc.h>
19
20#include "hardware.h"
21
22#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