187f938c9SSimon Glass /* 28b3f7bf7SJim Lin * Copyright (c) 2009-2012 NVIDIA Corporation 387f938c9SSimon Glass * 487f938c9SSimon Glass * See file CREDITS for list of people who contributed to this 587f938c9SSimon Glass * project. 687f938c9SSimon Glass * 787f938c9SSimon Glass * This program is free software; you can redistribute it and/or 887f938c9SSimon Glass * modify it under the terms of the GNU General Public License as 987f938c9SSimon Glass * published by the Free Software Foundation; either version 2 of 1087f938c9SSimon Glass * the License, or (at your option) any later version. 1187f938c9SSimon Glass * 1287f938c9SSimon Glass * This program is distributed in the hope that it will be useful, 1387f938c9SSimon Glass * but WITHOUT ANY WARRANTY; without even the implied warranty of 1487f938c9SSimon Glass * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1587f938c9SSimon Glass * GNU General Public License for more details. 1687f938c9SSimon Glass * 1787f938c9SSimon Glass * You should have received a copy of the GNU General Public License 1887f938c9SSimon Glass * along with this program; if not, write to the Free Software 1987f938c9SSimon Glass * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 2087f938c9SSimon Glass * MA 02111-1307 USA 2187f938c9SSimon Glass */ 2287f938c9SSimon Glass 2387f938c9SSimon Glass #include <common.h> 2487f938c9SSimon Glass #include <usb.h> 2587f938c9SSimon Glass 2687f938c9SSimon Glass #include "ehci.h" 2787f938c9SSimon Glass 2887f938c9SSimon Glass #include <asm/errno.h> 2987f938c9SSimon Glass #include <asm/arch/usb.h> 3087f938c9SSimon Glass 318b3f7bf7SJim Lin /* 328b3f7bf7SJim Lin * A known hardware issue where Connect Status Change bit of PORTSC register 338b3f7bf7SJim Lin * of USB1 controller will be set after Port Reset. 348b3f7bf7SJim Lin * We have to clear it in order for later device enumeration to proceed. 358b3f7bf7SJim Lin * This ehci_powerup_fixup overrides the weak function ehci_powerup_fixup 368b3f7bf7SJim Lin * in "ehci-hcd.c". 378b3f7bf7SJim Lin */ 388b3f7bf7SJim Lin void ehci_powerup_fixup(uint32_t *status_reg, uint32_t *reg) 398b3f7bf7SJim Lin { 408b3f7bf7SJim Lin mdelay(50); 418b3f7bf7SJim Lin if (((u32) status_reg & TEGRA_USB_ADDR_MASK) != TEGRA_USB1_BASE) 428b3f7bf7SJim Lin return; 438b3f7bf7SJim Lin /* For EHCI_PS_CSC to be cleared in ehci_hcd.c */ 448b3f7bf7SJim Lin if (ehci_readl(status_reg) & EHCI_PS_CSC) 458b3f7bf7SJim Lin *reg |= EHCI_PS_CSC; 468b3f7bf7SJim Lin } 4787f938c9SSimon Glass 4887f938c9SSimon Glass /* 4987f938c9SSimon Glass * Create the appropriate control structures to manage 5087f938c9SSimon Glass * a new EHCI host controller. 5187f938c9SSimon Glass */ 52676ae068SLucas Stach int ehci_hcd_init(int index, struct ehci_hccr **hccr, struct ehci_hcor **hcor) 5387f938c9SSimon Glass { 5487f938c9SSimon Glass u32 our_hccr, our_hcor; 5587f938c9SSimon Glass 5687f938c9SSimon Glass /* 5787f938c9SSimon Glass * Select the first port, as we don't have a way of selecting others 5887f938c9SSimon Glass * yet 5987f938c9SSimon Glass */ 60*a896211fSLucas Stach if (tegrausb_start_port(index, &our_hccr, &our_hcor)) 6187f938c9SSimon Glass return -1; 6287f938c9SSimon Glass 63676ae068SLucas Stach *hccr = (struct ehci_hccr *)our_hccr; 64676ae068SLucas Stach *hcor = (struct ehci_hcor *)our_hcor; 6587f938c9SSimon Glass 6687f938c9SSimon Glass return 0; 6787f938c9SSimon Glass } 6887f938c9SSimon Glass 6987f938c9SSimon Glass /* 7087f938c9SSimon Glass * Destroy the appropriate control structures corresponding 7187f938c9SSimon Glass * the the EHCI host controller. 7287f938c9SSimon Glass */ 73676ae068SLucas Stach int ehci_hcd_stop(int index) 7487f938c9SSimon Glass { 75*a896211fSLucas Stach return tegrausb_stop_port(index); 7687f938c9SSimon Glass } 77