2 * Copyright (c) 2009-2012 NVIDIA Corporation
4 * See file CREDITS for list of people who contributed to this
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
28 #include <asm/errno.h>
29 #include <asm/arch/usb.h>
32 * A known hardware issue where Connect Status Change bit of PORTSC register
33 * of USB1 controller will be set after Port Reset.
34 * We have to clear it in order for later device enumeration to proceed.
35 * This ehci_powerup_fixup overrides the weak function ehci_powerup_fixup
38 void ehci_powerup_fixup(uint32_t *status_reg, uint32_t *reg)
41 if (((u32) status_reg & TEGRA_USB_ADDR_MASK) != TEGRA_USB1_BASE)
43 /* For EHCI_PS_CSC to be cleared in ehci_hcd.c */
44 if (ehci_readl(status_reg) & EHCI_PS_CSC)
49 * Create the appropriate control structures to manage
50 * a new EHCI host controller.
52 int ehci_hcd_init(int index, struct ehci_hccr **hccr, struct ehci_hcor **hcor)
54 u32 our_hccr, our_hcor;
57 * Select the first port, as we don't have a way of selecting others
60 if (tegrausb_start_port(index, &our_hccr, &our_hcor))
63 *hccr = (struct ehci_hccr *)our_hccr;
64 *hcor = (struct ehci_hcor *)our_hcor;
70 * Destroy the appropriate control structures corresponding
71 * the the EHCI host controller.
73 int ehci_hcd_stop(int index)
75 return tegrausb_stop_port(index);