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 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 mx27_initialize_usb_hw(int port,unsigned int flags)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 83