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 33 /* 34 * Create the appropriate control structures to manage 35 * a new EHCI host controller. 36 * 37 * Excerpts from linux ehci fsl driver. 38 */ 39 int ehci_hcd_init(int index, struct ehci_hccr **hccr, struct ehci_hcor **hcor) 40 { 41 struct usb_ehci *ehci; 42 const char *phy_type = NULL; 43 size_t len; 44 #ifdef CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY 45 char usb_phy[5]; 46 47 usb_phy[0] = '\0'; 48 #endif 49 50 ehci = (struct usb_ehci *)CONFIG_SYS_FSL_USB_ADDR; 51 *hccr = (struct ehci_hccr *)((uint32_t)&ehci->caplength); 52 *hcor = (struct ehci_hcor *)((uint32_t) *hccr + 53 HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase))); 54 55 /* Set to Host mode */ 56 setbits_le32(&ehci->usbmode, CM_HOST); 57 58 out_be32(&ehci->snoop1, SNOOP_SIZE_2GB); 59 out_be32(&ehci->snoop2, 0x80000000 | SNOOP_SIZE_2GB); 60 61 /* Init phy */ 62 if (hwconfig_sub("usb1", "phy_type")) 63 phy_type = hwconfig_subarg("usb1", "phy_type", &len); 64 else 65 phy_type = getenv("usb_phy_type"); 66 67 if (!phy_type) { 68 #ifdef CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY 69 /* if none specified assume internal UTMI */ 70 strcpy(usb_phy, "utmi"); 71 phy_type = usb_phy; 72 #else 73 printf("WARNING: USB phy type not defined !!\n"); 74 return -1; 75 #endif 76 } 77 78 if (!strcmp(phy_type, "utmi")) { 79 #if defined(CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY) 80 setbits_be32(&ehci->control, PHY_CLK_SEL_UTMI); 81 setbits_be32(&ehci->control, UTMI_PHY_EN); 82 udelay(1000); /* delay required for PHY Clk to appear */ 83 #endif 84 out_le32(&(*hcor)->or_portsc[0], PORT_PTS_UTMI); 85 } else { 86 #if defined(CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY) 87 clrbits_be32(&ehci->control, UTMI_PHY_EN); 88 setbits_be32(&ehci->control, PHY_CLK_SEL_ULPI); 89 udelay(1000); /* delay required for PHY Clk to appear */ 90 #endif 91 out_le32(&(*hcor)->or_portsc[0], PORT_PTS_ULPI); 92 } 93 94 /* Enable interface. */ 95 setbits_be32(&ehci->control, USB_EN); 96 97 out_be32(&ehci->prictrl, 0x0000000c); 98 out_be32(&ehci->age_cnt_limit, 0x00000040); 99 out_be32(&ehci->sictrl, 0x00000001); 100 101 in_le32(&ehci->usbmode); 102 103 return 0; 104 } 105 106 /* 107 * Destroy the appropriate control structures corresponding 108 * the the EHCI host controller. 109 */ 110 int ehci_hcd_stop(int index) 111 { 112 return 0; 113 } 114