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
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
/*
* drivers/usb/musb/ubi32_usb.c
* Ubicom32 usb controller driver.
*
* (C) Copyright 2009, Ubicom, Inc.
* Copyright (C) 2005-2006 by Texas Instruments
*
* Derived from the Texas Instruments Inventra Controller Driver for Linux.
*
* This file is part of the Ubicom32 Linux Kernel Port.
*
* The Ubicom32 Linux Kernel Port 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.
*
* The Ubicom32 Linux Kernel Port 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 the Ubicom32 Linux Kernel Port. If not,
* see <http://www.gnu.org/licenses/>.
*
* Ubicom32 implementation derived from (with many thanks):
* arch/m68knommu
* arch/blackfin
* arch/parisc
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/list.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <asm/io.h>
#include <asm/ip5000.h>
#include "musb_core.h"
void musb_platform_enable(struct musb *musb)
{
}
void musb_platform_disable(struct musb *musb)
{
}
int musb_platform_set_mode(struct musb *musb, u8 musb_mode) {
return 0;
}
static void ip5k_usb_hcd_vbus_power(struct musb *musb, int is_on, int sleeping)
{
}
static void ip5k_usb_hcd_set_vbus(struct musb *musb, int is_on)
{
u8 devctl;
/* HDRC controls CPEN, but beware current surges during device
* connect. They can trigger transient overcurrent conditions
* that must be ignored.
*/
devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
if (is_on) {
musb->is_active = 1;
musb->xceiv.default_a = 1;
musb->xceiv.state = OTG_STATE_A_WAIT_VRISE;
devctl |= MUSB_DEVCTL_SESSION;
MUSB_HST_MODE(musb);
} else {
musb->is_active = 0;
/* NOTE: we're skipping A_WAIT_VFALL -> A_IDLE and
* jumping right to B_IDLE...
*/
musb->xceiv.default_a = 0;
musb->xceiv.state = OTG_STATE_B_IDLE;
devctl &= ~MUSB_DEVCTL_SESSION;
MUSB_DEV_MODE(musb);
}
musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
DBG(1, "VBUS %s, devctl %02x "
/* otg %3x conf %08x prcm %08x */ "\n",
otg_state_string(musb),
musb_readb(musb->mregs, MUSB_DEVCTL));
}
static int ip5k_usb_hcd_set_power(struct otg_transceiver *x, unsigned mA)
{
return 0;
}
static int musb_platform_resume(struct musb *musb);
int __init musb_platform_init(struct musb *musb)
{
#ifdef CONFIG_UBICOM32_V4
u32_t chip_id;
asm volatile (
"move.4 %0, CHIP_ID \n\t"
: "=r" (chip_id)
);
if (chip_id == 0x30001) {
*((u32_t *)(GENERAL_CFG_BASE + GEN_USB_PHY_TEST)) &= ~(1 << 30);
udelay(1);
*((u32_t *)(GENERAL_CFG_BASE + GEN_USB_PHY_TEST)) &= ~(1 << 31);
} else {
*((u32_t *)(GENERAL_CFG_BASE + GEN_USB_PHY_TEST)) &= ~(1 << 17);
udelay(1);
*((u32_t *)(GENERAL_CFG_BASE + GEN_USB_PHY_TEST)) &= ~(1 << 14);
}
#endif
*((u32_t *)(GENERAL_CFG_BASE + GEN_USB_PHY_CFG)) |= ((1 << 14) | (1 <<15));
/* The i-clk is AUTO gated. Hence there is no need
* to disable it until the driver is shutdown */
clk_enable(musb->clock);
musb_platform_resume(musb);
ip5k_usb_hcd_vbus_power(musb, musb->board_mode == MUSB_HOST, 1);
if (is_host_enabled(musb))
musb->board_set_vbus = ip5k_usb_hcd_set_vbus;
if (is_peripheral_enabled(musb))
musb->xceiv.set_power = ip5k_usb_hcd_set_power;
return 0;
}
int musb_platform_suspend(struct musb *musb)
{
return 0;
}
int musb_platform_resume(struct musb *musb)
{
return 0;
}
int musb_platform_exit(struct musb *musb)
{
ip5k_usb_hcd_vbus_power(musb, 0 /*off*/, 1);
musb_platform_suspend(musb);
return 0;
}
|
