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31#include <linux/kernel.h>
32#include <linux/slab.h>
33#include <linux/module.h>
34#include <linux/input.h>
35#include <linux/init.h>
36#include <linux/usb.h>
37
38
39
40
41#define DRIVER_VERSION ""
42#define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@suse.cz>"
43#define DRIVER_DESC "USB HID Boot Protocol keyboard driver"
44
45MODULE_AUTHOR( DRIVER_AUTHOR );
46MODULE_DESCRIPTION( DRIVER_DESC );
47MODULE_LICENSE("GPL");
48
49static unsigned char usb_kbd_keycode[256] = {
50 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
51 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
52 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
53 27, 43, 84, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
54 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
55 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
56 72, 73, 82, 83, 86,127,116,117, 85, 89, 90, 91, 92, 93, 94, 95,
57 120,121,122,123,134,138,130,132,128,129,131,137,133,135,136,113,
58 115,114, 0, 0, 0,124, 0,181,182,183,184,185,186,187,188,189,
59 190,191,192,193,194,195,196,197,198, 0, 0, 0, 0, 0, 0, 0,
60 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
61 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
62 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
63 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
64 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
65 150,158,159,128,136,177,178,176,142,152,173,140
66};
67
68struct usb_kbd {
69 struct input_dev dev;
70 struct usb_device *usbdev;
71 unsigned char new[8];
72 unsigned char old[8];
73 struct urb irq, led;
74 struct usb_ctrlrequest dr;
75 unsigned char leds, newleds;
76 char name[128];
77 int open;
78};
79
80static void usb_kbd_irq(struct urb *urb)
81{
82 struct usb_kbd *kbd = urb->context;
83 int i;
84
85 if (urb->status) return;
86
87 for (i = 0; i < 8; i++)
88 input_report_key(&kbd->dev, usb_kbd_keycode[i + 224], (kbd->new[0] >> i) & 1);
89
90 for (i = 2; i < 8; i++) {
91
92 if (kbd->old[i] > 3 && memscan(kbd->new + 2, kbd->old[i], 6) == kbd->new + 8) {
93 if (usb_kbd_keycode[kbd->old[i]])
94 input_report_key(&kbd->dev, usb_kbd_keycode[kbd->old[i]], 0);
95 else
96 info("Unknown key (scancode %#x) released.", kbd->old[i]);
97 }
98
99 if (kbd->new[i] > 3 && memscan(kbd->old + 2, kbd->new[i], 6) == kbd->old + 8) {
100 if (usb_kbd_keycode[kbd->new[i]])
101 input_report_key(&kbd->dev, usb_kbd_keycode[kbd->new[i]], 1);
102 else
103 info("Unknown key (scancode %#x) pressed.", kbd->new[i]);
104 }
105 }
106
107 memcpy(kbd->old, kbd->new, 8);
108}
109
110int usb_kbd_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
111{
112 struct usb_kbd *kbd = dev->private;
113
114 if (type != EV_LED) return -1;
115
116
117 kbd->newleds = (!!test_bit(LED_KANA, dev->led) << 3) | (!!test_bit(LED_COMPOSE, dev->led) << 3) |
118 (!!test_bit(LED_SCROLLL, dev->led) << 2) | (!!test_bit(LED_CAPSL, dev->led) << 1) |
119 (!!test_bit(LED_NUML, dev->led));
120
121 if (kbd->led.status == -EINPROGRESS)
122 return 0;
123
124 if (kbd->leds == kbd->newleds)
125 return 0;
126
127 kbd->leds = kbd->newleds;
128 kbd->led.dev = kbd->usbdev;
129 if (usb_submit_urb(&kbd->led))
130 err("usb_submit_urb(leds) failed");
131
132 return 0;
133}
134
135static void usb_kbd_led(struct urb *urb)
136{
137 struct usb_kbd *kbd = urb->context;
138
139 if (urb->status)
140 warn("led urb status %d received", urb->status);
141
142 if (kbd->leds == kbd->newleds)
143 return;
144
145 kbd->leds = kbd->newleds;
146 kbd->led.dev = kbd->usbdev;
147 if (usb_submit_urb(&kbd->led))
148 err("usb_submit_urb(leds) failed");
149}
150
151static int usb_kbd_open(struct input_dev *dev)
152{
153 struct usb_kbd *kbd = dev->private;
154
155 if (kbd->open++)
156 return 0;
157
158 kbd->irq.dev = kbd->usbdev;
159 if (usb_submit_urb(&kbd->irq))
160 return -EIO;
161
162 return 0;
163}
164
165static void usb_kbd_close(struct input_dev *dev)
166{
167 struct usb_kbd *kbd = dev->private;
168
169 if (!--kbd->open)
170 usb_unlink_urb(&kbd->irq);
171}
172
173static void *usb_kbd_probe(struct usb_device *dev, unsigned int ifnum,
174 const struct usb_device_id *id)
175{
176 struct usb_interface *iface;
177 struct usb_interface_descriptor *interface;
178 struct usb_endpoint_descriptor *endpoint;
179 struct usb_kbd *kbd;
180 int i, pipe, maxp;
181 char *buf;
182
183 iface = &dev->actconfig->interface[ifnum];
184 interface = &iface->altsetting[iface->act_altsetting];
185
186 if (interface->bNumEndpoints != 1) return NULL;
187
188 endpoint = interface->endpoint + 0;
189 if (!(endpoint->bEndpointAddress & 0x80)) return NULL;
190 if ((endpoint->bmAttributes & 3) != 3) return NULL;
191
192 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
193 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
194
195 usb_set_protocol(dev, interface->bInterfaceNumber, 0);
196 usb_set_idle(dev, interface->bInterfaceNumber, 0, 0);
197
198 if (!(kbd = kmalloc(sizeof(struct usb_kbd), GFP_KERNEL))) return NULL;
199 memset(kbd, 0, sizeof(struct usb_kbd));
200
201 kbd->usbdev = dev;
202
203 kbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_LED) | BIT(EV_REP);
204 kbd->dev.ledbit[0] = BIT(LED_NUML) | BIT(LED_CAPSL) | BIT(LED_SCROLLL) | BIT(LED_COMPOSE) | BIT(LED_KANA);
205
206 for (i = 0; i < 255; i++)
207 set_bit(usb_kbd_keycode[i], kbd->dev.keybit);
208 clear_bit(0, kbd->dev.keybit);
209
210 kbd->dev.private = kbd;
211 kbd->dev.event = usb_kbd_event;
212 kbd->dev.open = usb_kbd_open;
213 kbd->dev.close = usb_kbd_close;
214
215 FILL_INT_URB(&kbd->irq, dev, pipe, kbd->new, maxp > 8 ? 8 : maxp,
216 usb_kbd_irq, kbd, endpoint->bInterval);
217
218 kbd->dr.bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE;
219 kbd->dr.bRequest = USB_REQ_SET_REPORT;
220 kbd->dr.wValue = 0x200;
221 kbd->dr.wIndex = interface->bInterfaceNumber;
222 kbd->dr.wLength = 1;
223
224 kbd->dev.name = kbd->name;
225 kbd->dev.idbus = BUS_USB;
226 kbd->dev.idvendor = dev->descriptor.idVendor;
227 kbd->dev.idproduct = dev->descriptor.idProduct;
228 kbd->dev.idversion = dev->descriptor.bcdDevice;
229
230 if (!(buf = kmalloc(63, GFP_KERNEL))) {
231 kfree(kbd);
232 return NULL;
233 }
234
235 if (dev->descriptor.iManufacturer &&
236 usb_string(dev, dev->descriptor.iManufacturer, buf, 63) > 0)
237 strcat(kbd->name, buf);
238 if (dev->descriptor.iProduct &&
239 usb_string(dev, dev->descriptor.iProduct, buf, 63) > 0)
240 sprintf(kbd->name, "%s %s", kbd->name, buf);
241
242 if (!strlen(kbd->name))
243 sprintf(kbd->name, "USB HIDBP Keyboard %04x:%04x",
244 kbd->dev.idvendor, kbd->dev.idproduct);
245
246 kfree(buf);
247
248 FILL_CONTROL_URB(&kbd->led, dev, usb_sndctrlpipe(dev, 0),
249 (void*) &kbd->dr, &kbd->leds, 1, usb_kbd_led, kbd);
250
251 input_register_device(&kbd->dev);
252
253 printk(KERN_INFO "input%d: %s on usb%d:%d.%d\n",
254 kbd->dev.number, kbd->name, dev->bus->busnum, dev->devnum, ifnum);
255
256 return kbd;
257}
258
259static void usb_kbd_disconnect(struct usb_device *dev, void *ptr)
260{
261 struct usb_kbd *kbd = ptr;
262 usb_unlink_urb(&kbd->irq);
263 input_unregister_device(&kbd->dev);
264 kfree(kbd);
265}
266
267static struct usb_device_id usb_kbd_id_table [] = {
268 { USB_INTERFACE_INFO(3, 1, 1) },
269 { }
270};
271
272MODULE_DEVICE_TABLE (usb, usb_kbd_id_table);
273
274static struct usb_driver usb_kbd_driver = {
275 name: "usbkbd",
276 probe: usb_kbd_probe,
277 disconnect: usb_kbd_disconnect,
278 id_table: usb_kbd_id_table,
279};
280
281static int __init usb_kbd_init(void)
282{
283 usb_register(&usb_kbd_driver);
284 info(DRIVER_VERSION ":" DRIVER_DESC);
285 return 0;
286}
287
288static void __exit usb_kbd_exit(void)
289{
290 usb_deregister(&usb_kbd_driver);
291}
292
293module_init(usb_kbd_init);
294module_exit(usb_kbd_exit);
295
