1 /* 2 * (C) Copyright 2009, 2011 Freescale Semiconductor, Inc. 3 * 4 * (C) Copyright 2008, Excito Elektronik i Sk=E5ne AB 5 * 6 * Author: Tor Krill tor@excito.com 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of 11 * the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21 * MA 02111-1307 USA 22 */ 23 24 #include <common.h> 25 #include <pci.h> 26 #include <usb.h> 27 #include <asm/io.h> 28 #include <usb/ehci-fsl.h> 29 #include <hwconfig.h> 30 31 #include "ehci.h" 32 #include "ehci-core.h" 33 34 /* 35 * Create the appropriate control structures to manage 36 * a new EHCI host controller. 37 * 38 * Excerpts from linux ehci fsl driver. 39 */ 40 int ehci_hcd_init(void) 41 { 42 struct usb_ehci *ehci; 43 char usb_phy[5]; 44 const char *phy_type = NULL; 45 size_t len; 46 47 usb_phy[0] = '\0'; 48 49 ehci = (struct usb_ehci *)CONFIG_SYS_FSL_USB_ADDR; 50 hccr = (struct ehci_hccr *)((uint32_t)&ehci->caplength); 51 hcor = (struct ehci_hcor *)((uint32_t) hccr + 52 HC_LENGTH(ehci_readl(&hccr->cr_capbase))); 53 54 /* Set to Host mode */ 55 setbits_le32(&ehci->usbmode, CM_HOST); 56 57 out_be32(&ehci->snoop1, SNOOP_SIZE_2GB); 58 out_be32(&ehci->snoop2, 0x80000000 | SNOOP_SIZE_2GB); 59 60 /* Init phy */ 61 if (hwconfig_sub("usb1", "phy_type")) 62 phy_type = hwconfig_subarg("usb1", "phy_type", &len); 63 else 64 phy_type = getenv("usb_phy_type"); 65 66 if (!phy_type) { 67 #ifdef CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY 68 /* if none specified assume internal UTMI */ 69 strcpy(usb_phy, "utmi"); 70 phy_type = usb_phy; 71 #else 72 printf("WARNING: USB phy type not defined !!\n"); 73 return -1; 74 #endif 75 } 76 77 if (!strcmp(phy_type, "utmi")) { 78 #if defined(CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY) 79 setbits_be32(&ehci->control, PHY_CLK_SEL_UTMI); 80 setbits_be32(&ehci->control, UTMI_PHY_EN); 81 udelay(1000); /* delay required for PHY Clk to appear */ 82 #endif 83 out_le32(&(hcor->or_portsc[0]), PORT_PTS_UTMI); 84 } else { 85 #if defined(CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY) 86 clrbits_be32(&ehci->control, UTMI_PHY_EN); 87 setbits_be32(&ehci->control, PHY_CLK_SEL_ULPI); 88 udelay(1000); /* delay required for PHY Clk to appear */ 89 #endif 90 out_le32(&(hcor->or_portsc[0]), PORT_PTS_ULPI); 91 } 92 93 /* Enable interface. */ 94 setbits_be32(&ehci->control, USB_EN); 95 96 out_be32(&ehci->prictrl, 0x0000000c); 97 out_be32(&ehci->age_cnt_limit, 0x00000040); 98 out_be32(&ehci->sictrl, 0x00000001); 99 100 in_le32(&ehci->usbmode); 101 102 return 0; 103 } 104 105 /* 106 * Destroy the appropriate control structures corresponding 107 * the the EHCI host controller. 108 */ 109 int ehci_hcd_stop(void) 110 { 111 return 0; 112 } 113