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
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2005-2007 by Texas Instruments
* Some code has been taken from tusb6010.c
* Copyrights for that are attributable to:
* Copyright (C) 2006 Nokia Corporation
* Tony Lindgren <tony@atomide.com>
*
* This file is part of the Inventra Controller Driver for Linux.
*/
#include <common.h>
#include <asm/omap_common.h>
#include <asm/omap_musb.h>
#include <twl4030.h>
#include <twl6030.h>
#include "linux-compat.h"
#include "musb_core.h"
#include "omap2430.h"
static inline void omap2430_low_level_exit(struct musb *musb)
{
u32 l;
/* in any role */
l = musb_readl(musb->mregs, OTG_FORCESTDBY);
l |= ENABLEFORCE; /* enable MSTANDBY */
musb_writel(musb->mregs, OTG_FORCESTDBY, l);
}
static inline void omap2430_low_level_init(struct musb *musb)
{
u32 l;
l = musb_readl(musb->mregs, OTG_FORCESTDBY);
l &= ~ENABLEFORCE; /* disable MSTANDBY */
musb_writel(musb->mregs, OTG_FORCESTDBY, l);
}
static int omap2430_musb_init(struct musb *musb)
{
u32 l;
int status = 0;
unsigned long int start;
struct omap_musb_board_data *data =
(struct omap_musb_board_data *)musb->controller;
/* Reset the controller */
musb_writel(musb->mregs, OTG_SYSCONFIG, SOFTRST);
start = get_timer(0);
while (1) {
l = musb_readl(musb->mregs, OTG_SYSCONFIG);
if ((l & SOFTRST) == 0)
break;
if (get_timer(start) > (CONFIG_SYS_HZ / 1000)) {
dev_err(musb->controller, "MUSB reset is taking too long\n");
return -ENODEV;
}
}
l = musb_readl(musb->mregs, OTG_INTERFSEL);
if (data->interface_type == MUSB_INTERFACE_UTMI) {
/* OMAP4 uses Internal PHY GS70 which uses UTMI interface */
l &= ~ULPI_12PIN; /* Disable ULPI */
l |= UTMI_8BIT; /* Enable UTMI */
} else {
l |= ULPI_12PIN;
}
musb_writel(musb->mregs, OTG_INTERFSEL, l);
pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, "
"sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n",
musb_readl(musb->mregs, OTG_REVISION),
musb_readl(musb->mregs, OTG_SYSCONFIG),
musb_readl(musb->mregs, OTG_SYSSTATUS),
musb_readl(musb->mregs, OTG_INTERFSEL),
musb_readl(musb->mregs, OTG_SIMENABLE));
return 0;
err1:
return status;
}
static int omap2430_musb_enable(struct musb *musb)
{
#ifdef CONFIG_TWL4030_USB
if (twl4030_usb_ulpi_init()) {
serial_printf("ERROR: %s Could not initialize PHY\n",
__PRETTY_FUNCTION__);
}
#endif
#ifdef CONFIG_TWL6030_POWER
twl6030_usb_device_settings();
#endif
#ifdef CONFIG_OMAP44XX
u32 *usbotghs_control = (u32 *)((*ctrl)->control_usbotghs_ctrl);
*usbotghs_control = USBOTGHS_CONTROL_AVALID |
USBOTGHS_CONTROL_VBUSVALID | USBOTGHS_CONTROL_IDDIG;
#endif
return 0;
}
static void omap2430_musb_disable(struct musb *musb)
{
}
static int omap2430_musb_exit(struct musb *musb)
{
del_timer_sync(&musb_idle_timer);
omap2430_low_level_exit(musb);
return 0;
}
const struct musb_platform_ops omap2430_ops = {
.init = omap2430_musb_init,
.exit = omap2430_musb_exit,
.enable = omap2430_musb_enable,
.disable = omap2430_musb_disable,
};
|
