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 mx31_initialize_usb_hw(int port,unsigned int flags)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