2 * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
3 * Copyright (C) 2010 Freescale Semiconductor, Inc.
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.
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
16 #include <linux/platform_device.h>
18 #include <linux/platform_data/usb-ehci-mxc.h>
23 #define USBCTRL_OTGBASE_OFFSET 0x600
25 #define MX35_OTG_SIC_SHIFT 29
26 #define MX35_OTG_SIC_MASK (0x3 << MX35_OTG_SIC_SHIFT)
27 #define MX35_OTG_PM_BIT (1 << 24)
28 #define MX35_OTG_PP_BIT (1 << 11)
29 #define MX35_OTG_OCPOL_BIT (1 << 3)
31 #define MX35_H1_SIC_SHIFT 21
32 #define MX35_H1_SIC_MASK (0x3 << MX35_H1_SIC_SHIFT)
33 #define MX35_H1_PP_BIT (1 << 18)
34 #define MX35_H1_PM_BIT (1 << 16)
35 #define MX35_H1_IPPUE_UP_BIT (1 << 7)
36 #define MX35_H1_IPPUE_DOWN_BIT (1 << 6)
37 #define MX35_H1_TLL_BIT (1 << 5)
38 #define MX35_H1_USBTE_BIT (1 << 4)
39 #define MX35_H1_OCPOL_BIT (1 << 2)
41 int mx35_initialize_usb_hw(int port, unsigned int flags)
45 v = readl(MX35_IO_ADDRESS(MX35_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET));
48 case 0: /* OTG port */
49 v &= ~(MX35_OTG_SIC_MASK | MX35_OTG_PM_BIT | MX35_OTG_PP_BIT |
51 v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX35_OTG_SIC_SHIFT;
53 if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
56 if (flags & MXC_EHCI_PWR_PIN_ACTIVE_HIGH)
59 if (!(flags & MXC_EHCI_OC_PIN_ACTIVE_LOW))
60 v |= MX35_OTG_OCPOL_BIT;
64 v &= ~(MX35_H1_SIC_MASK | MX35_H1_PM_BIT | MX35_H1_PP_BIT |
65 MX35_H1_OCPOL_BIT | MX35_H1_TLL_BIT | MX35_H1_USBTE_BIT |
66 MX35_H1_IPPUE_DOWN_BIT | MX35_H1_IPPUE_UP_BIT);
67 v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX35_H1_SIC_SHIFT;
69 if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
72 if (flags & MXC_EHCI_PWR_PIN_ACTIVE_HIGH)
75 if (!(flags & MXC_EHCI_OC_PIN_ACTIVE_LOW))
76 v |= MX35_H1_OCPOL_BIT;
78 if (!(flags & MXC_EHCI_TTL_ENABLED))
81 if (flags & MXC_EHCI_INTERNAL_PHY)
82 v |= MX35_H1_USBTE_BIT;
84 if (flags & MXC_EHCI_IPPUE_DOWN)
85 v |= MX35_H1_IPPUE_DOWN_BIT;
87 if (flags & MXC_EHCI_IPPUE_UP)
88 v |= MX35_H1_IPPUE_UP_BIT;
95 writel(v, MX35_IO_ADDRESS(MX35_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET));