1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de> 4 * Copyright (C) 2010 Freescale Semiconductor, Inc. 5 */ 6 7 #include <linux/platform_device.h> 8 #include <linux/io.h> 9 #include <linux/platform_data/usb-ehci-mxc.h> 10 11 #include "ehci.h" 12 #include "hardware.h" 13 14 #define USBCTRL_OTGBASE_OFFSET 0x600 15 16 #define MX31_OTG_SIC_SHIFT 29 17 #define MX31_OTG_SIC_MASK (0x3 << MX31_OTG_SIC_SHIFT) 18 #define MX31_OTG_PM_BIT (1 << 24) 19 20 #define MX31_H2_SIC_SHIFT 21 21 #define MX31_H2_SIC_MASK (0x3 << MX31_H2_SIC_SHIFT) 22 #define MX31_H2_PM_BIT (1 << 16) 23 #define MX31_H2_DT_BIT (1 << 5) 24 25 #define MX31_H1_SIC_SHIFT 13 26 #define MX31_H1_SIC_MASK (0x3 << MX31_H1_SIC_SHIFT) 27 #define MX31_H1_PM_BIT (1 << 8) 28 #define MX31_H1_DT_BIT (1 << 4) 29 mx31_initialize_usb_hw(int port,unsigned int flags)30int mx31_initialize_usb_hw(int port, unsigned int flags) 31 { 32 unsigned int v; 33 34 v = readl(MX31_IO_ADDRESS(MX31_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET)); 35 36 switch (port) { 37 case 0: /* OTG port */ 38 v &= ~(MX31_OTG_SIC_MASK | MX31_OTG_PM_BIT); 39 v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX31_OTG_SIC_SHIFT; 40 41 if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) 42 v |= MX31_OTG_PM_BIT; 43 44 break; 45 case 1: /* H1 port */ 46 v &= ~(MX31_H1_SIC_MASK | MX31_H1_PM_BIT | MX31_H1_DT_BIT); 47 v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX31_H1_SIC_SHIFT; 48 49 if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) 50 v |= MX31_H1_PM_BIT; 51 52 if (!(flags & MXC_EHCI_TTL_ENABLED)) 53 v |= MX31_H1_DT_BIT; 54 55 break; 56 case 2: /* H2 port */ 57 v &= ~(MX31_H2_SIC_MASK | MX31_H2_PM_BIT | MX31_H2_DT_BIT); 58 v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX31_H2_SIC_SHIFT; 59 60 if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) 61 v |= MX31_H2_PM_BIT; 62 63 if (!(flags & MXC_EHCI_TTL_ENABLED)) 64 v |= MX31_H2_DT_BIT; 65 66 break; 67 default: 68 return -EINVAL; 69 } 70 71 writel(v, MX31_IO_ADDRESS(MX31_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET)); 72 73 return 0; 74 } 75