1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
/*
* 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
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* 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>
#if !defined(CONFIG_TEGRA3)
#define TEGRA_USB1_BASE 0xC5000000
#else
#define TEGRA_USB1_BASE 0x7D000000
#endif
/*
* 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)
{
wait_ms(50);
if (((u32) status_reg & TEGRA_USB_ADDR_MASK) != TEGRA_USB1_BASE)
return;
/* 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)
{
return tegrausb_start_port(index, hccr, hcor);
}
/*
* Destroy the appropriate control structures corresponding
* the the EHCI host controller.
*/
int ehci_hcd_stop(int index)
{
usb_set_host_mode();
tegrausb_stop_port(index);
return 0;
}
|