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 "ehci.h"
21#include "hardware.h"
22
23#define USBCTRL_OTGBASE_OFFSET	0x600
24
25#define MX31_OTG_SIC_SHIFT	29
26#define MX31_OTG_SIC_MASK	(0x3 << MX31_OTG_SIC_SHIFT)
27#define MX31_OTG_PM_BIT		(1 << 24)
28
29#define MX31_H2_SIC_SHIFT	21
30#define MX31_H2_SIC_MASK	(0x3 << MX31_H2_SIC_SHIFT)
31#define MX31_H2_PM_BIT		(1 << 16)
32#define MX31_H2_DT_BIT		(1 << 5)
33
34#define MX31_H1_SIC_SHIFT	13
35#define MX31_H1_SIC_MASK	(0x3 << MX31_H1_SIC_SHIFT)
36#define MX31_H1_PM_BIT		(1 << 8)
37#define MX31_H1_DT_BIT		(1 << 4)
38
39int mx31_initialize_usb_hw(int port, unsigned int flags)
40{
41	unsigned int v;
42
43	v = readl(MX31_IO_ADDRESS(MX31_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET));
44
45	switch (port) {
46	case 0:	/* OTG port */
47		v &= ~(MX31_OTG_SIC_MASK | MX31_OTG_PM_BIT);
48		v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX31_OTG_SIC_SHIFT;
49
50		if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
51			v |= MX31_OTG_PM_BIT;
52
53		break;
54	case 1: /* H1 port */
55		v &= ~(MX31_H1_SIC_MASK | MX31_H1_PM_BIT | MX31_H1_DT_BIT);
56		v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX31_H1_SIC_SHIFT;
57
58		if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
59			v |= MX31_H1_PM_BIT;
60
61		if (!(flags & MXC_EHCI_TTL_ENABLED))
62			v |= MX31_H1_DT_BIT;
63
64		break;
65	case 2:	/* H2 port */
66		v &= ~(MX31_H2_SIC_MASK | MX31_H2_PM_BIT | MX31_H2_DT_BIT);
67		v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX31_H2_SIC_SHIFT;
68
69		if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
70			v |= MX31_H2_PM_BIT;
71
72		if (!(flags & MXC_EHCI_TTL_ENABLED))
73			v |= MX31_H2_DT_BIT;
74
75		break;
76	default:
77		return -EINVAL;
78	}
79
80	writel(v, MX31_IO_ADDRESS(MX31_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET));
81
82	return 0;
83}
84