Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
ehci-imx35.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2009 Daniel Mack <[email protected]>
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>
21 
22 #define USBCTRL_OTGBASE_OFFSET 0x600
23 
24 #define MX35_OTG_SIC_SHIFT 29
25 #define MX35_OTG_SIC_MASK (0x3 << MX35_OTG_SIC_SHIFT)
26 #define MX35_OTG_PM_BIT (1 << 24)
27 #define MX35_OTG_PP_BIT (1 << 11)
28 #define MX35_OTG_OCPOL_BIT (1 << 3)
29 
30 #define MX35_H1_SIC_SHIFT 21
31 #define MX35_H1_SIC_MASK (0x3 << MX35_H1_SIC_SHIFT)
32 #define MX35_H1_PP_BIT (1 << 18)
33 #define MX35_H1_PM_BIT (1 << 16)
34 #define MX35_H1_IPPUE_UP_BIT (1 << 7)
35 #define MX35_H1_IPPUE_DOWN_BIT (1 << 6)
36 #define MX35_H1_TLL_BIT (1 << 5)
37 #define MX35_H1_USBTE_BIT (1 << 4)
38 #define MX35_H1_OCPOL_BIT (1 << 2)
39 
40 int mx35_initialize_usb_hw(int port, unsigned int flags)
41 {
42  unsigned int v;
43 
45 
46  switch (port) {
47  case 0: /* OTG port */
51 
52  if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
53  v |= MX35_OTG_PM_BIT;
54 
55  if (flags & MXC_EHCI_PWR_PIN_ACTIVE_HIGH)
56  v |= MX35_OTG_PP_BIT;
57 
58  if (!(flags & MXC_EHCI_OC_PIN_ACTIVE_LOW))
59  v |= MX35_OTG_OCPOL_BIT;
60 
61  break;
62  case 1: /* H1 port */
67 
68  if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
69  v |= MX35_H1_PM_BIT;
70 
71  if (flags & MXC_EHCI_PWR_PIN_ACTIVE_HIGH)
72  v |= MX35_H1_PP_BIT;
73 
74  if (!(flags & MXC_EHCI_OC_PIN_ACTIVE_LOW))
75  v |= MX35_H1_OCPOL_BIT;
76 
77  if (!(flags & MXC_EHCI_TTL_ENABLED))
78  v |= MX35_H1_TLL_BIT;
79 
80  if (flags & MXC_EHCI_INTERNAL_PHY)
81  v |= MX35_H1_USBTE_BIT;
82 
83  if (flags & MXC_EHCI_IPPUE_DOWN)
85 
86  if (flags & MXC_EHCI_IPPUE_UP)
88 
89  break;
90  default:
91  return -EINVAL;
92  }
93 
95 
96  return 0;
97 }