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 MX27_OTG_SIC_SHIFT 29 17 #define MX27_OTG_SIC_MASK (0x3 << MX27_OTG_SIC_SHIFT) 18 #define MX27_OTG_PM_BIT (1 << 24) 19 20 #define MX27_H2_SIC_SHIFT 21 21 #define MX27_H2_SIC_MASK (0x3 << MX27_H2_SIC_SHIFT) 22 #define MX27_H2_PM_BIT (1 << 16) 23 #define MX27_H2_DT_BIT (1 << 5) 24 25 #define MX27_H1_SIC_SHIFT 13 26 #define MX27_H1_SIC_MASK (0x3 << MX27_H1_SIC_SHIFT) 27 #define MX27_H1_PM_BIT (1 << 8) 28 #define MX27_H1_DT_BIT (1 << 4) 29 mx27_initialize_usb_hw(int port,unsigned int flags)30int mx27_initialize_usb_hw(int port, unsigned int flags) 31 { 32 unsigned int v; 33 34 v = readl(MX27_IO_ADDRESS(MX27_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET)); 35 36 switch (port) { 37 case 0: /* OTG port */ 38 v &= ~(MX27_OTG_SIC_MASK | MX27_OTG_PM_BIT); 39 v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX27_OTG_SIC_SHIFT; 40 41 if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) 42 v |= MX27_OTG_PM_BIT; 43 break; 44 case 1: /* H1 port */ 45 v &= ~(MX27_H1_SIC_MASK | MX27_H1_PM_BIT | MX27_H1_DT_BIT); 46 v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX27_H1_SIC_SHIFT; 47 48 if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) 49 v |= MX27_H1_PM_BIT; 50 51 if (!(flags & MXC_EHCI_TTL_ENABLED)) 52 v |= MX27_H1_DT_BIT; 53 54 break; 55 case 2: /* H2 port */ 56 v &= ~(MX27_H2_SIC_MASK | MX27_H2_PM_BIT | MX27_H2_DT_BIT); 57 v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX27_H2_SIC_SHIFT; 58 59 if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) 60 v |= MX27_H2_PM_BIT; 61 62 if (!(flags & MXC_EHCI_TTL_ENABLED)) 63 v |= MX27_H2_DT_BIT; 64 65 break; 66 default: 67 return -EINVAL; 68 } 69 70 writel(v, MX27_IO_ADDRESS(MX27_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET)); 71 72 return 0; 73 } 74 75