blob: a1c43f8331787c7cf84e0eabcf0d373ae1ebabe4 [file] [log] [blame]
* Copyright (c) 2009-2012 NVIDIA Corporation
* See file CREDITS for list of people who contributed to this
* project.
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
#include <common.h>
#include <usb.h>
#include "ehci.h"
#include <asm/errno.h>
#include <asm/arch/usb.h>
* A known hardware issue where Connect Status Change bit of PORTSC register
* of USB1 controller will be set after Port Reset.
* We have to clear it in order for later device enumeration to proceed.
* This ehci_powerup_fixup overrides the weak function ehci_powerup_fixup
* in "ehci-hcd.c".
void ehci_powerup_fixup(uint32_t *status_reg, uint32_t *reg)
if (((u32) status_reg & TEGRA_USB_ADDR_MASK) != TEGRA_USB1_BASE)
/* For EHCI_PS_CSC to be cleared in ehci_hcd.c */
if (ehci_readl(status_reg) & EHCI_PS_CSC)
*reg |= EHCI_PS_CSC;
* Create the appropriate control structures to manage
* a new EHCI host controller.
int ehci_hcd_init(int index, struct ehci_hccr **hccr, struct ehci_hcor **hcor)
u32 our_hccr, our_hcor;
* Select the first port, as we don't have a way of selecting others
* yet
if (tegrausb_start_port(index, &our_hccr, &our_hcor))
return -1;
*hccr = (struct ehci_hccr *)our_hccr;
*hcor = (struct ehci_hcor *)our_hcor;
return 0;
* Destroy the appropriate control structures corresponding
* the the EHCI host controller.
int ehci_hcd_stop(int index)
return tegrausb_stop_port(index);