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
157
158
159
160
161
162
|
/* $NetBSD: zusb.c,v 1.6 2011/07/19 15:11:49 dyoung Exp $ */
/*
* Copyright (c) 2008 Christopher Gilbert
* All rights reserved.
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the company nor the name of the author may be used to
* endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: zusb.c,v 1.6 2011/07/19 15:11:49 dyoung Exp $");
#include <sys/param.h>
#include <sys/device.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <arm/xscale/pxa2x0reg.h>
#include <arm/xscale/pxa2x0var.h>
#include <arm/xscale/pxa2x0_gpio.h>
#include <machine/intr.h>
#include <zaurus/zaurus/zaurus_reg.h>
#include <zaurus/zaurus/zaurus_var.h>
#ifdef ZUSB_DEBUG
#define DPRINTF(s) printf s
#else
#define DPRINTF(s)
#endif
struct zusb_softc {
device_t sc_dev;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
void *sc_client_ih;
void *sc_host_ih;
};
static int zusb_match(device_t, cfdata_t, void *);
static void zusb_attach(device_t, device_t, void *);
CFATTACH_DECL_NEW(zusb, sizeof(struct zusb_softc),
zusb_match, zusb_attach, NULL, NULL);
static int zusb_client_intr(void *);
static int zusb_host_intr(void *);
static void zusb_test_and_enabled_host_port(struct zusb_softc *);
static int
zusb_match(device_t parent, cfdata_t cf, void *aux)
{
if (ZAURUS_ISC1000 || ZAURUS_ISC3000)
return 1;
return 0;
}
static void
zusb_attach(device_t parent, device_t self, void *aux)
{
struct zusb_softc *sc = device_private(self);
struct pxaip_attach_args *pxa = aux;
aprint_normal(": USB Mode detection\n");
aprint_naive("\n");
sc->sc_dev = self;
sc->sc_iot = pxa->pxa_iot;
/* Map I/O space */
if (bus_space_map(sc->sc_iot, PXA2X0_USBDC_BASE, PXA270_USBDC_SIZE, 0,
&sc->sc_ioh)) {
aprint_error_dev(sc->sc_dev, "couldn't map memory space\n");
return;
}
pxa2x0_gpio_set_function(C3000_USB_DEVICE_PIN, GPIO_IN);
sc->sc_client_ih = pxa2x0_gpio_intr_establish(C3000_USB_DEVICE_PIN,
IST_EDGE_BOTH, IPL_BIO, zusb_client_intr, sc);
pxa2x0_gpio_set_function(C3000_USB_HOST_PIN, GPIO_IN);
sc->sc_host_ih = pxa2x0_gpio_intr_establish(C3000_USB_HOST_PIN,
IST_EDGE_BOTH, IPL_BIO, zusb_host_intr, sc);
/* configure port 2 for input */
bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR,
USBDC_UP2OCR_HXS | USBDC_UP2OCR_HXOE |
USBDC_UP2OCR_DPPDE | USBDC_UP2OCR_DMPDE);
zusb_test_and_enabled_host_port(sc);
}
static int
zusb_client_intr(void *v)
{
struct zusb_softc *sc = v;
DPRINTF(("%s: USB client cable changed\n", device_xname(sc->sc_dev)));
zusb_test_and_enabled_host_port(sc);
return 1;
}
static int
zusb_host_intr(void *v)
{
struct zusb_softc *sc = v;
DPRINTF(("%s: USB host cable changed\n", device_xname(sc->sc_dev)));
zusb_test_and_enabled_host_port(sc);
return 1;
}
static void
zusb_test_and_enabled_host_port(struct zusb_softc *sc)
{
int host_cable = pxa2x0_gpio_get_bit(C3000_USB_HOST_PIN);
#ifdef ZUSB_DEBUG
int client_cable = pxa2x0_gpio_get_bit(C3000_USB_DEVICE_PIN);
#endif
DPRINTF(("%s: USB cable: host %d, client %d\n",
device_xname(sc->sc_dev), host_cable, client_cable));
if (!host_cable) {
pxa2x0_gpio_set_function(C3000_USB_HOST_POWER_PIN,
GPIO_OUT | GPIO_SET);
DPRINTF(("%s: USB host power enabled\n",
device_xname(sc->sc_dev)));
} else {
pxa2x0_gpio_set_function(C3000_USB_HOST_POWER_PIN,
GPIO_OUT | GPIO_CLR);
DPRINTF(("%s: USB host power disabled\n",
device_xname(sc->sc_dev)));
}
}
|