blob: 46cc3840a15d7fbd053922d2a5f85e1f39f04197 (
plain)
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
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
|
#!/bin/sh
# SPDX-License-Identifier: MIT
set -e
#set -x
CONFIGFS="/sys/kernel/config"
GADGET="$CONFIGFS/usb_gadget"
VID="0x0525"
PID="0xa4a2"
SERIAL="0123456789"
MANUF=$(hostname)
PRODUCT="UVC Gadget"
USBFILE=/root/usbstorage.img
BOARD=$(strings /proc/device-tree/model)
case $BOARD in
"Renesas Salvator-X board based on r8a7795 ES1.x")
UDC_USB2=e6590000.usb
UDC_USB3=ee020000.usb
UDC_ROLE2=/sys/devices/platform/soc/ee080200.usb-phy/role
UDC_ROLE2=/dev/null #Not needed - always peripheral
UDC_ROLE3=/sys/devices/platform/soc/ee020000.usb/role
UDC=$UDC_USB2
UDC_ROLE=$UDC_ROLE2
;;
"TI OMAP4 PandaBoard-ES")
UDC=`ls /sys/class/udc` # Should be musb-hdrc.0.auto
UDC_ROLE=/dev/null # Not needed - peripheral enabled
;;
*)
UDC=`ls /sys/class/udc` # will identify the 'first' UDC
UDC_ROLE=/dev/null # Not generic
;;
esac
echo "Detecting platform:"
echo " board : $BOARD"
echo " udc : $UDC"
create_msd() {
# Example usage:
# create_msd <target config> <function name> <image file>
# create_msd configs/c.1 mass_storage.0 /root/backing.img
CONFIG=$1
FUNCTION=$2
BACKING_STORE=$3
if [ ! -f $BACKING_STORE ]
then
echo "\tCreating backing file"
dd if=/dev/zero of=$BACKING_STORE bs=1M count=32 > /dev/null 2>&1
mkfs.ext4 $USBFILE > /dev/null 2>&1
echo "\tOK"
fi
echo "\tCreating MSD gadget functionality"
mkdir functions/$FUNCTION
echo 1 > functions/$FUNCTION/stall
echo $BACKING_STORE > functions/$FUNCTION/lun.0/file
echo 1 > functions/$FUNCTION/lun.0/removable
echo 0 > functions/$FUNCTION/lun.0/cdrom
ln -s functions/$FUNCTION configs/c.1
echo "\tOK"
}
delete_msd() {
# Example usage:
# delete_msd <target config> <function name>
# delete_msd config/c.1 uvc.0
CONFIG=$1
FUNCTION=$2
echo "Removing Mass Storage interface : $FUNCTION"
rm -f $CONFIG/$FUNCTION
rmdir functions/$FUNCTION
echo "OK"
}
create_uvc() {
# Example usage:
# create_uvc <target config> <function name>
# create_uvc config/c.1 uvc.0
CONFIG=$1
FUNCTION=$2
echo " Creating UVC gadget functionality : $FUNCTION"
mkdir functions/$FUNCTION
mkdir -p functions/$FUNCTION/streaming/uncompressed/u/360p
cat <<EOF > functions/$FUNCTION/streaming/uncompressed/u/360p/dwFrameInterval
666666
1000000
5000000
EOF
mkdir functions/$FUNCTION/streaming/header/h
cd functions/$FUNCTION/streaming/header/h
ln -s ../../uncompressed/u
cd ../../class/fs
ln -s ../../header/h
cd ../../class/hs
ln -s ../../header/h
cd ../../../control
mkdir header/h
ln -s header/h class/fs
ln -s header/h class/ss
cd ../../../
# Set the packet size: uvc gadget max size is 3k...
echo 3072 > functions/$FUNCTION/streaming_maxpacket
echo 2048 > functions/$FUNCTION/streaming_maxpacket
echo 1024 > functions/$FUNCTION/streaming_maxpacket
ln -s functions/$FUNCTION configs/c.1
}
delete_uvc() {
# Example usage:
# delete_uvc <target config> <function name>
# delete_uvc config/c.1 uvc.0
CONFIG=$1
FUNCTION=$2
echo " Deleting UVC gadget functionality : $FUNCTION"
rm $CONFIG/$FUNCTION
rm functions/$FUNCTION/control/class/*/h
rm functions/$FUNCTION/streaming/class/*/h
rm functions/$FUNCTION/streaming/header/h/u
rmdir functions/$FUNCTION/streaming/uncompressed/u/360p
rmdir functions/$FUNCTION/streaming/uncompressed/u
rmdir functions/$FUNCTION/streaming/header/h
rmdir functions/$FUNCTION/control/header/h
rmdir functions/$FUNCTION
}
case "$1" in
start)
echo "Creating the USB gadget"
#echo "Loading composite module"
#modprobe libcomposite
echo "Creating gadget directory g1"
mkdir -p $GADGET/g1
cd $GADGET/g1
if [ $? -ne 0 ]; then
echo "Error creating usb gadget in configfs"
exit 1;
else
echo "OK"
fi
echo "Setting Vendor and Product ID's"
echo $VID > idVendor
echo $PID > idProduct
echo "OK"
echo "Setting English strings"
mkdir -p strings/0x409
echo $SERIAL > strings/0x409/serialnumber
echo $MANUF > strings/0x409/manufacturer
echo $PRODUCT > strings/0x409/product
echo "OK"
echo "Creating Config"
mkdir configs/c.1
mkdir configs/c.1/strings/0x409
echo "Creating functions..."
#create_msd configs/c.1 mass_storage.0 $USBFILE
create_uvc configs/c.1 uvc.0
#create_uvc configs/c.1 uvc.1
echo "OK"
echo "Binding USB Device Controller"
echo $UDC > UDC
echo peripheral > $UDC_ROLE
cat $UDC_ROLE
echo "OK"
;;
stop)
echo "Stopping the USB gadget"
set +e # Ignore all errors here on a best effort
cd $GADGET/g1
if [ $? -ne 0 ]; then
echo "Error: no configfs gadget found"
exit 1;
fi
echo "Unbinding USB Device Controller"
grep $UDC UDC && echo "" > UDC
echo "OK"
#delete_uvc configs/c.1 uvc.1
delete_uvc configs/c.1 uvc.0
#delete_msd configs/c.1 mass_storage.0
echo "Clearing English strings"
rmdir strings/0x409
echo "OK"
echo "Cleaning up configuration"
rmdir configs/c.1/strings/0x409
rmdir configs/c.1
echo "OK"
echo "Removing gadget directory"
cd $GADGET
rmdir g1
cd /
echo "OK"
#echo "Disable composite USB gadgets"
#modprobe -r libcomposite
#echo "OK"
;;
*)
echo "Usage : $0 {start|stop}"
esac
|
