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Diffstat (limited to 'usr/src/dkms_source_tree/usbkbd.c')
-rw-r--r--usr/src/dkms_source_tree/usbkbd.c365
1 files changed, 365 insertions, 0 deletions
diff --git a/usr/src/dkms_source_tree/usbkbd.c b/usr/src/dkms_source_tree/usbkbd.c
new file mode 100644
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1/*
2 * Copyright (c) 1999-2001 Vojtech Pavlik
3 *
4 * USB HIDBP Keyboard support
5 */
6
7/*
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 * Should you need to contact me, the author, you can do so either by
23 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
24 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
25 */
26
27#include <linux/kernel.h>
28#include <linux/slab.h>
29#include <linux/module.h>
30#include <linux/init.h>
31#include <linux/usb/input.h>
32#include <linux/hid.h>
33
34/*
35 * Version Information
36 */
37#define DRIVER_VERSION ""
38#define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@ucw.cz>"
39#define DRIVER_DESC "USB HID Boot Protocol keyboard driver"
40#define DRIVER_LICENSE "GPL"
41
42MODULE_AUTHOR(DRIVER_AUTHOR);
43MODULE_DESCRIPTION(DRIVER_DESC);
44MODULE_LICENSE(DRIVER_LICENSE);
45
46static const unsigned char usb_kbd_keycode[256] = {
47 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
48 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
49 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
50 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
51 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
52 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
53 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
54 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
55 115,114, 0, 0, 0,121, 0, 89, 93,124, 92, 94, 95, 0, 0, 0,
56 122,123, 90, 91, 85, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
57 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
58 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
59 0, 0, 0, 0, 0, 0, 0, 0, 0, 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 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
62 150,158,159,128,136,177,178,176,142,152,173,140
63};
64
65struct usb_kbd {
66 struct input_dev *dev;
67 struct usb_device *usbdev;
68 unsigned char old[8];
69 struct urb *irq, *led;
70 unsigned char newleds;
71 char name[128];
72 char phys[64];
73
74 unsigned char *new;
75 struct usb_ctrlrequest *cr;
76 unsigned char *leds;
77 dma_addr_t cr_dma;
78 dma_addr_t new_dma;
79 dma_addr_t leds_dma;
80};
81
82static void usb_kbd_irq(struct urb *urb)
83{
84 struct usb_kbd *kbd = urb->context;
85 int i;
86
87 switch (urb->status) {
88 case 0: /* success */
89 break;
90 case -ECONNRESET: /* unlink */
91 case -ENOENT:
92 case -ESHUTDOWN:
93 return;
94 /* -EPIPE: should clear the halt */
95 default: /* error */
96 goto resubmit;
97 }
98
99 for (i = 0; i < 8; i++)
100 input_report_key(kbd->dev, usb_kbd_keycode[i + 224], (kbd->new[0] >> i) & 1);
101
102 for (i = 2; i < 8; i++) {
103
104 if (kbd->old[i] > 3 && memscan(kbd->new + 2, kbd->old[i], 6) == kbd->new + 8) {
105 if (usb_kbd_keycode[kbd->old[i]])
106 input_report_key(kbd->dev, usb_kbd_keycode[kbd->old[i]], 0);
107 else
108 info("Unknown key (scancode %#x) released.", kbd->old[i]);
109 }
110
111 if (kbd->new[i] > 3 && memscan(kbd->old + 2, kbd->new[i], 6) == kbd->old + 8) {
112 if (usb_kbd_keycode[kbd->new[i]])
113 input_report_key(kbd->dev, usb_kbd_keycode[kbd->new[i]], 1);
114 else
115 info("Unknown key (scancode %#x) pressed.", kbd->new[i]);
116 }
117 }
118
119 input_sync(kbd->dev);
120
121 memcpy(kbd->old, kbd->new, 8);
122
123resubmit:
124 i = usb_submit_urb (urb, GFP_ATOMIC);
125 if (i)
126 err_hid ("can't resubmit intr, %s-%s/input0, status %d",
127 kbd->usbdev->bus->bus_name,
128 kbd->usbdev->devpath, i);
129}
130
131static int usb_kbd_event(struct input_dev *dev, unsigned int type,
132 unsigned int code, int value)
133{
134 struct usb_kbd *kbd = input_get_drvdata(dev);
135
136 if (type != EV_LED)
137 return -1;
138
139 kbd->newleds = (!!test_bit(LED_KANA, dev->led) << 3) | (!!test_bit(LED_COMPOSE, dev->led) << 3) |
140 (!!test_bit(LED_SCROLLL, dev->led) << 2) | (!!test_bit(LED_CAPSL, dev->led) << 1) |
141 (!!test_bit(LED_NUML, dev->led));
142
143 if (kbd->led->status == -EINPROGRESS)
144 return 0;
145
146 if (*(kbd->leds) == kbd->newleds)
147 return 0;
148
149 *(kbd->leds) = kbd->newleds;
150 kbd->led->dev = kbd->usbdev;
151 if (usb_submit_urb(kbd->led, GFP_ATOMIC))
152 err_hid("usb_submit_urb(leds) failed");
153
154 return 0;
155}
156
157static void usb_kbd_led(struct urb *urb)
158{
159 struct usb_kbd *kbd = urb->context;
160
161 if (urb->status)
162 warn("led urb status %d received", urb->status);
163
164 if (*(kbd->leds) == kbd->newleds)
165 return;
166
167 *(kbd->leds) = kbd->newleds;
168 kbd->led->dev = kbd->usbdev;
169 if (usb_submit_urb(kbd->led, GFP_ATOMIC))
170 err_hid("usb_submit_urb(leds) failed");
171}
172
173static int usb_kbd_open(struct input_dev *dev)
174{
175 struct usb_kbd *kbd = input_get_drvdata(dev);
176
177 kbd->irq->dev = kbd->usbdev;
178 if (usb_submit_urb(kbd->irq, GFP_KERNEL))
179 return -EIO;
180
181 return 0;
182}
183
184static void usb_kbd_close(struct input_dev *dev)
185{
186 struct usb_kbd *kbd = input_get_drvdata(dev);
187
188 usb_kill_urb(kbd->irq);
189}
190
191static int usb_kbd_alloc_mem(struct usb_device *dev, struct usb_kbd *kbd)
192{
193 if (!(kbd->irq = usb_alloc_urb(0, GFP_KERNEL)))
194 return -1;
195 if (!(kbd->led = usb_alloc_urb(0, GFP_KERNEL)))
196 return -1;
197 if (!(kbd->new = usb_buffer_alloc(dev, 8, GFP_ATOMIC, &kbd->new_dma)))
198 return -1;
199 if (!(kbd->cr = usb_buffer_alloc(dev, sizeof(struct usb_ctrlrequest), GFP_ATOMIC, &kbd->cr_dma)))
200 return -1;
201 if (!(kbd->leds = usb_buffer_alloc(dev, 1, GFP_ATOMIC, &kbd->leds_dma)))
202 return -1;
203
204 return 0;
205}
206
207static void usb_kbd_free_mem(struct usb_device *dev, struct usb_kbd *kbd)
208{
209 usb_free_urb(kbd->irq);
210 usb_free_urb(kbd->led);
211 usb_buffer_free(dev, 8, kbd->new, kbd->new_dma);
212 usb_buffer_free(dev, sizeof(struct usb_ctrlrequest), kbd->cr, kbd->cr_dma);
213 usb_buffer_free(dev, 1, kbd->leds, kbd->leds_dma);
214}
215
216static int usb_kbd_probe(struct usb_interface *iface,
217 const struct usb_device_id *id)
218{
219 struct usb_device *dev = interface_to_usbdev(iface);
220 struct usb_host_interface *interface;
221 struct usb_endpoint_descriptor *endpoint;
222 struct usb_kbd *kbd;
223 struct input_dev *input_dev;
224 int i, pipe, maxp;
225 int error = -ENOMEM;
226
227 interface = iface->cur_altsetting;
228
229 if (interface->desc.bNumEndpoints != 1)
230 return -ENODEV;
231
232 endpoint = &interface->endpoint[0].desc;
233 if (!usb_endpoint_is_int_in(endpoint))
234 return -ENODEV;
235
236 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
237 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
238
239 kbd = kzalloc(sizeof(struct usb_kbd), GFP_KERNEL);
240 input_dev = input_allocate_device();
241 if (!kbd || !input_dev)
242 goto fail1;
243
244 if (usb_kbd_alloc_mem(dev, kbd))
245 goto fail2;
246
247 kbd->usbdev = dev;
248 kbd->dev = input_dev;
249
250 if (dev->manufacturer)
251 strlcpy(kbd->name, dev->manufacturer, sizeof(kbd->name));
252
253 if (dev->product) {
254 if (dev->manufacturer)
255 strlcat(kbd->name, " ", sizeof(kbd->name));
256 strlcat(kbd->name, dev->product, sizeof(kbd->name));
257 }
258
259 if (!strlen(kbd->name))
260 snprintf(kbd->name, sizeof(kbd->name),
261 "USB HIDBP Keyboard %04x:%04x",
262 le16_to_cpu(dev->descriptor.idVendor),
263 le16_to_cpu(dev->descriptor.idProduct));
264
265 usb_make_path(dev, kbd->phys, sizeof(kbd->phys));
266 strlcpy(kbd->phys, "/input0", sizeof(kbd->phys));
267
268 input_dev->name = kbd->name;
269 input_dev->phys = kbd->phys;
270 usb_to_input_id(dev, &input_dev->id);
271 input_dev->dev.parent = &iface->dev;
272
273 input_set_drvdata(input_dev, kbd);
274
275 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_LED) |
276 BIT_MASK(EV_REP);
277 input_dev->ledbit[0] = BIT_MASK(LED_NUML) | BIT_MASK(LED_CAPSL) |
278 BIT_MASK(LED_SCROLLL) | BIT_MASK(LED_COMPOSE) |
279 BIT_MASK(LED_KANA);
280
281 for (i = 0; i < 255; i++)
282 set_bit(usb_kbd_keycode[i], input_dev->keybit);
283 clear_bit(0, input_dev->keybit);
284
285 input_dev->event = usb_kbd_event;
286 input_dev->open = usb_kbd_open;
287 input_dev->close = usb_kbd_close;
288
289 usb_fill_int_urb(kbd->irq, dev, pipe,
290 kbd->new, (maxp > 8 ? 8 : maxp),
291 usb_kbd_irq, kbd, endpoint->bInterval);
292 kbd->irq->transfer_dma = kbd->new_dma;
293 kbd->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
294
295 kbd->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE;
296 kbd->cr->bRequest = 0x09;
297 kbd->cr->wValue = cpu_to_le16(0x200);
298 kbd->cr->wIndex = cpu_to_le16(interface->desc.bInterfaceNumber);
299 kbd->cr->wLength = cpu_to_le16(1);
300
301 usb_fill_control_urb(kbd->led, dev, usb_sndctrlpipe(dev, 0),
302 (void *) kbd->cr, kbd->leds, 1,
303 usb_kbd_led, kbd);
304 kbd->led->setup_dma = kbd->cr_dma;
305 kbd->led->transfer_dma = kbd->leds_dma;
306 kbd->led->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP);
307
308 error = input_register_device(kbd->dev);
309 if (error)
310 goto fail2;
311
312 usb_set_intfdata(iface, kbd);
313 return 0;
314
315fail2:
316 usb_kbd_free_mem(dev, kbd);
317fail1:
318 input_free_device(input_dev);
319 kfree(kbd);
320 return error;
321}
322
323static void usb_kbd_disconnect(struct usb_interface *intf)
324{
325 struct usb_kbd *kbd = usb_get_intfdata (intf);
326
327 usb_set_intfdata(intf, NULL);
328 if (kbd) {
329 usb_kill_urb(kbd->irq);
330 input_unregister_device(kbd->dev);
331 usb_kbd_free_mem(interface_to_usbdev(intf), kbd);
332 kfree(kbd);
333 }
334}
335
336static struct usb_device_id usb_kbd_id_table [] = {
337 { USB_INTERFACE_INFO(USB_INTERFACE_CLASS_HID, USB_INTERFACE_SUBCLASS_BOOT,
338 USB_INTERFACE_PROTOCOL_KEYBOARD) },
339 { } /* Terminating entry */
340};
341
342MODULE_DEVICE_TABLE (usb, usb_kbd_id_table);
343
344static struct usb_driver usb_kbd_driver = {
345 .name = "usbkbd",
346 .probe = usb_kbd_probe,
347 .disconnect = usb_kbd_disconnect,
348 .id_table = usb_kbd_id_table,
349};
350
351static int __init usb_kbd_init(void)
352{
353 int result = usb_register(&usb_kbd_driver);
354 if (result == 0)
355 info(DRIVER_VERSION ":" DRIVER_DESC);
356 return result;
357}
358
359static void __exit usb_kbd_exit(void)
360{
361 usb_deregister(&usb_kbd_driver);
362}
363
364module_init(usb_kbd_init);
365module_exit(usb_kbd_exit);
generated by cgit v1.2.3 (git 2.39.1) at 2026-09-20 15:29:42 +0000