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
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
/*
* (C) Copyright 2008, Excito Elektronik i Sk=E5ne AB
*
* Author: Tor Krill tor@excito.com
*
* 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 <pci.h>
#include <usb.h>
#include <mpc83xx.h>
#include <asm/io.h>
#include <asm/bitops.h>
#include "usb_ehci.h"
#include "usb_ehci_fsl.h"
#include "usb_ehci_core.h"
/*
* Create the appropriate control structures to manage
* a new EHCI host controller.
*
* Excerpts from linux ehci fsl driver.
*/
int ehci_hcd_init(void)
{
volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
uint32_t addr, temp;
addr = (uint32_t)&(im->usb[0]);
hccr = (struct ehci_hccr *)(addr + FSL_SKIP_PCI);
hcor = (struct ehci_hcor *)((uint32_t) hccr +
HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
/* Configure clock */
clrsetbits_be32(&(im->clk.sccr), MPC83XX_SCCR_USB_MASK,
MPC83XX_SCCR_USB_DRCM_11);
/* Confgure interface. */
temp = in_be32((void *)(addr + FSL_SOC_USB_CTRL));
out_be32((void *)(addr + FSL_SOC_USB_CTRL), temp
| REFSEL_16MHZ | UTMI_PHY_EN);
/* Wait for clock to stabilize */
do {
temp = in_be32((void *)(addr + FSL_SOC_USB_CTRL));
udelay(1000);
} while (!(temp & PHY_CLK_VALID));
/* Set to Host mode */
temp = in_le32((void *)(addr + FSL_SOC_USB_USBMODE));
out_le32((void *)(addr + FSL_SOC_USB_USBMODE), temp | CM_HOST);
out_be32((void *)(addr + FSL_SOC_USB_SNOOP1), SNOOP_SIZE_2GB);
out_be32((void *)(addr + FSL_SOC_USB_SNOOP2),
0x80000000 | SNOOP_SIZE_2GB);
/* Init phy */
/* TODO: handle different phys? */
out_le32(&(hcor->or_portsc[0]), PORT_PTS_UTMI);
/* Enable interface. */
temp = in_be32((void *)(addr + FSL_SOC_USB_CTRL));
out_be32((void *)(addr + FSL_SOC_USB_CTRL), temp | USB_EN);
out_be32((void *)(addr + FSL_SOC_USB_PRICTRL), 0x0000000c);
out_be32((void *)(addr + FSL_SOC_USB_AGECNTTHRSH), 0x00000040);
out_be32((void *)(addr + FSL_SOC_USB_SICTRL), 0x00000001);
/* Enable interface. */
temp = in_be32((void *)(addr + FSL_SOC_USB_CTRL));
out_be32((void *)(addr + FSL_SOC_USB_CTRL), temp | USB_EN);
temp = in_le32((void *)(addr + FSL_SOC_USB_USBMODE));
return 0;
}
/*
* Destroy the appropriate control structures corresponding
* the the EHCI host controller.
*/
int ehci_hcd_stop(void)
{
return 0;
}
|
