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 19 #include <mach/hardware.h> 20 #include <mach/mxc_ehci.h> 21 22 #define USBCTRL_OTGBASE_OFFSET 0x600 23 24 #define MX31_OTG_SIC_SHIFT 29 25 #define MX31_OTG_SIC_MASK (0x3 << MX31_OTG_SIC_SHIFT) 26 #define MX31_OTG_PM_BIT (1 << 24) 27 28 #define MX31_H2_SIC_SHIFT 21 29 #define MX31_H2_SIC_MASK (0x3 << MX31_H2_SIC_SHIFT) 30 #define MX31_H2_PM_BIT (1 << 16) 31 #define MX31_H2_DT_BIT (1 << 5) 32 33 #define MX31_H1_SIC_SHIFT 13 34 #define MX31_H1_SIC_MASK (0x3 << MX31_H1_SIC_SHIFT) 35 #define MX31_H1_PM_BIT (1 << 8) 36 #define MX31_H1_DT_BIT (1 << 4) 37 mx31_initialize_usb_hw(int port,unsigned int flags)38int mx31_initialize_usb_hw(int port, unsigned int flags) 39 { 40 unsigned int v; 41 42 v = readl(MX31_IO_ADDRESS(MX31_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET)); 43 44 switch (port) { 45 case 0: /* OTG port */ 46 v &= ~(MX31_OTG_SIC_MASK | MX31_OTG_PM_BIT); 47 v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX31_OTG_SIC_SHIFT; 48 49 if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) 50 v |= MX31_OTG_PM_BIT; 51 52 break; 53 case 1: /* H1 port */ 54 v &= ~(MX31_H1_SIC_MASK | MX31_H1_PM_BIT | MX31_H1_DT_BIT); 55 v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX31_H1_SIC_SHIFT; 56 57 if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) 58 v |= MX31_H1_PM_BIT; 59 60 if (!(flags & MXC_EHCI_TTL_ENABLED)) 61 v |= MX31_H1_DT_BIT; 62 63 break; 64 case 2: /* H2 port */ 65 v &= ~(MX31_H2_SIC_MASK | MX31_H2_PM_BIT | MX31_H2_DT_BIT); 66 v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX31_H2_SIC_SHIFT; 67 68 if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) 69 v |= MX31_H2_PM_BIT; 70 71 if (!(flags & MXC_EHCI_TTL_ENABLED)) 72 v |= MX31_H2_DT_BIT; 73 74 break; 75 default: 76 return -EINVAL; 77 } 78 79 writel(v, MX31_IO_ADDRESS(MX31_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET)); 80 81 return 0; 82 } 83