1 /* 2 * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de> 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License as published by the 6 * Free Software Foundation; either version 2 of the License, or (at your 7 * option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, but 10 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 11 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software Foundation, 16 * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 17 */ 18 19 20 #include <common.h> 21 #include <usb.h> 22 #include <asm/io.h> 23 #include <asm/arch/imx-regs.h> 24 #include <usb/ehci-fsl.h> 25 #include <errno.h> 26 27 #include "ehci.h" 28 #include "ehci-core.h" 29 30 #define USBCTRL_OTGBASE_OFFSET 0x600 31 32 #ifdef CONFIG_MX25 33 #define MX25_USB_CTRL_IP_PUE_DOWN_BIT (1<<6) 34 #define MX25_USB_CTRL_HSTD_BIT (1<<5) 35 #define MX25_USB_CTRL_USBTE_BIT (1<<4) 36 #define MX25_USB_CTRL_OCPOL_OTG_BIT (1<<3) 37 #endif 38 39 #ifdef CONFIG_MX31 40 #define MX31_OTG_SIC_SHIFT 29 41 #define MX31_OTG_SIC_MASK (0x3 << MX31_OTG_SIC_SHIFT) 42 #define MX31_OTG_PM_BIT (1 << 24) 43 44 #define MX31_H2_SIC_SHIFT 21 45 #define MX31_H2_SIC_MASK (0x3 << MX31_H2_SIC_SHIFT) 46 #define MX31_H2_PM_BIT (1 << 16) 47 #define MX31_H2_DT_BIT (1 << 5) 48 49 #define MX31_H1_SIC_SHIFT 13 50 #define MX31_H1_SIC_MASK (0x3 << MX31_H1_SIC_SHIFT) 51 #define MX31_H1_PM_BIT (1 << 8) 52 #define MX31_H1_DT_BIT (1 << 4) 53 #endif 54 55 static int mxc_set_usbcontrol(int port, unsigned int flags) 56 { 57 unsigned int v; 58 59 #ifdef CONFIG_MX25 60 v = MX25_USB_CTRL_IP_PUE_DOWN_BIT | MX25_USB_CTRL_HSTD_BIT | 61 MX25_USB_CTRL_USBTE_BIT | MX25_USB_CTRL_OCPOL_OTG_BIT; 62 #endif 63 64 #ifdef CONFIG_MX31 65 v = readl(IMX_USB_BASE + USBCTRL_OTGBASE_OFFSET); 66 67 switch (port) { 68 case 0: /* OTG port */ 69 v &= ~(MX31_OTG_SIC_MASK | MX31_OTG_PM_BIT); 70 v |= (flags & MXC_EHCI_INTERFACE_MASK) 71 << MX31_OTG_SIC_SHIFT; 72 if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) 73 v |= MX31_OTG_PM_BIT; 74 75 break; 76 case 1: /* H1 port */ 77 v &= ~(MX31_H1_SIC_MASK | MX31_H1_PM_BIT | 78 MX31_H1_DT_BIT); 79 v |= (flags & MXC_EHCI_INTERFACE_MASK) 80 << MX31_H1_SIC_SHIFT; 81 if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) 82 v |= MX31_H1_PM_BIT; 83 84 if (!(flags & MXC_EHCI_TTL_ENABLED)) 85 v |= MX31_H1_DT_BIT; 86 87 break; 88 case 2: /* H2 port */ 89 v &= ~(MX31_H2_SIC_MASK | MX31_H2_PM_BIT | 90 MX31_H2_DT_BIT); 91 v |= (flags & MXC_EHCI_INTERFACE_MASK) 92 << MX31_H2_SIC_SHIFT; 93 if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) 94 v |= MX31_H2_PM_BIT; 95 96 if (!(flags & MXC_EHCI_TTL_ENABLED)) 97 v |= MX31_H2_DT_BIT; 98 99 break; 100 default: 101 return -EINVAL; 102 } 103 #endif 104 105 writel(v, IMX_USB_BASE + USBCTRL_OTGBASE_OFFSET); 106 return 0; 107 } 108 109 int ehci_hcd_init(void) 110 { 111 struct usb_ehci *ehci; 112 #ifdef CONFIG_MX31 113 u32 tmp; 114 struct clock_control_regs *sc_regs = 115 (struct clock_control_regs *)CCM_BASE; 116 117 tmp = __raw_readl(&sc_regs->ccmr); 118 __raw_writel(__raw_readl(&sc_regs->ccmr) | (1 << 9), &sc_regs->ccmr) ; 119 #endif 120 121 udelay(80); 122 123 /* Take USB2 */ 124 ehci = (struct usb_ehci *)(IMX_USB_BASE + 125 (0x200 * CONFIG_MXC_USB_PORT)); 126 hccr = (struct ehci_hccr *)((uint32_t)&ehci->caplength); 127 hcor = (struct ehci_hcor *)((uint32_t) hccr + 128 HC_LENGTH(ehci_readl(&hccr->cr_capbase))); 129 setbits_le32(&ehci->usbmode, CM_HOST); 130 #ifdef CONFIG_MX31 131 setbits_le32(&ehci->control, USB_EN); 132 133 __raw_writel(CONFIG_MXC_USB_PORTSC, &ehci->portsc); 134 #endif 135 mxc_set_usbcontrol(CONFIG_MXC_USB_PORT, CONFIG_MXC_USB_FLAGS); 136 137 udelay(10000); 138 139 return 0; 140 } 141 142 /* 143 * Destroy the appropriate control structures corresponding 144 * the the EHCI host controller. 145 */ 146 int ehci_hcd_stop(void) 147 { 148 return 0; 149 } 150