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path: root/drivers/hid/usbhid/usbkbd.c
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Diffstat (limited to 'drivers/hid/usbhid/usbkbd.c')
-rw-r--r--drivers/hid/usbhid/usbkbd.c362
1 files changed, 362 insertions, 0 deletions
diff --git a/drivers/hid/usbhid/usbkbd.c b/drivers/hid/usbhid/usbkbd.c
new file mode 100644
index 000000000000..3749f4a235f9
--- /dev/null
+++ b/drivers/hid/usbhid/usbkbd.c
@@ -0,0 +1,362 @@
1/*
2 * $Id: usbkbd.c,v 1.27 2001/12/27 10:37:41 vojtech Exp $
3 *
4 * Copyright (c) 1999-2001 Vojtech Pavlik
5 *
6 * USB HIDBP Keyboard support
7 */
8
9/*
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 *
24 * Should you need to contact me, the author, you can do so either by
25 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
26 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
27 */
28
29#include <linux/kernel.h>
30#include <linux/slab.h>
31#include <linux/module.h>
32#include <linux/init.h>
33#include <linux/usb/input.h>
34#include <linux/hid.h>
35
36/*
37 * Version Information
38 */
39#define DRIVER_VERSION ""
40#define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@ucw.cz>"
41#define DRIVER_DESC "USB HID Boot Protocol keyboard driver"
42#define DRIVER_LICENSE "GPL"
43
44MODULE_AUTHOR(DRIVER_AUTHOR);
45MODULE_DESCRIPTION(DRIVER_DESC);
46MODULE_LICENSE(DRIVER_LICENSE);
47
48static unsigned char usb_kbd_keycode[256] = {
49 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
50 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
51 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
52 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
53 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
54 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
55 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
56 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
57 115,114, 0, 0, 0,121, 0, 89, 93,124, 92, 94, 95, 0, 0, 0,
58 122,123, 90, 91, 85, 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 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 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
64 150,158,159,128,136,177,178,176,142,152,173,140
65};
66
67struct usb_kbd {
68 struct input_dev *dev;
69 struct usb_device *usbdev;
70 unsigned char old[8];
71 struct urb *irq, *led;
72 unsigned char newleds;
73 char name[128];
74 char phys[64];
75
76 unsigned char *new;
77 struct usb_ctrlrequest *cr;
78 unsigned char *leds;
79 dma_addr_t cr_dma;
80 dma_addr_t new_dma;
81 dma_addr_t leds_dma;
82};
83
84static void usb_kbd_irq(struct urb *urb)
85{
86 struct usb_kbd *kbd = urb->context;
87 int i;
88
89 switch (urb->status) {
90 case 0: /* success */
91 break;
92 case -ECONNRESET: /* unlink */
93 case -ENOENT:
94 case -ESHUTDOWN:
95 return;
96 /* -EPIPE: should clear the halt */
97 default: /* error */
98 goto resubmit;
99 }
100
101 for (i = 0; i < 8; i++)
102 input_report_key(kbd->dev, usb_kbd_keycode[i + 224], (kbd->new[0] >> i) & 1);
103
104 for (i = 2; i < 8; i++) {
105
106 if (kbd->old[i] > 3 && memscan(kbd->new + 2, kbd->old[i], 6) == kbd->new + 8) {
107 if (usb_kbd_keycode[kbd->old[i]])
108 input_report_key(kbd->dev, usb_kbd_keycode[kbd->old[i]], 0);
109 else
110 info("Unknown key (scancode %#x) released.", kbd->old[i]);
111 }
112
113 if (kbd->new[i] > 3 && memscan(kbd->old + 2, kbd->new[i], 6) == kbd->old + 8) {
114 if (usb_kbd_keycode[kbd->new[i]])
115 input_report_key(kbd->dev, usb_kbd_keycode[kbd->new[i]], 1);
116 else
117 info("Unknown key (scancode %#x) pressed.", kbd->new[i]);
118 }
119 }
120
121 input_sync(kbd->dev);
122
123 memcpy(kbd->old, kbd->new, 8);
124
125resubmit:
126 i = usb_submit_urb (urb, GFP_ATOMIC);
127 if (i)
128 err ("can't resubmit intr, %s-%s/input0, status %d",
129 kbd->usbdev->bus->bus_name,
130 kbd->usbdev->devpath, i);
131}
132
133static int usb_kbd_event(struct input_dev *dev, unsigned int type,
134 unsigned int code, int value)
135{
136 struct usb_kbd *kbd = dev->private;
137
138 if (type != EV_LED)
139 return -1;
140
141
142 kbd->newleds = (!!test_bit(LED_KANA, dev->led) << 3) | (!!test_bit(LED_COMPOSE, dev->led) << 3) |
143 (!!test_bit(LED_SCROLLL, dev->led) << 2) | (!!test_bit(LED_CAPSL, dev->led) << 1) |
144 (!!test_bit(LED_NUML, dev->led));
145
146 if (kbd->led->status == -EINPROGRESS)
147 return 0;
148
149 if (*(kbd->leds) == kbd->newleds)
150 return 0;
151
152 *(kbd->leds) = kbd->newleds;
153 kbd->led->dev = kbd->usbdev;
154 if (usb_submit_urb(kbd->led, GFP_ATOMIC))
155 err("usb_submit_urb(leds) failed");
156
157 return 0;
158}
159
160static void usb_kbd_led(struct urb *urb)
161{
162 struct usb_kbd *kbd = urb->context;
163
164 if (urb->status)
165 warn("led urb status %d received", urb->status);
166
167 if (*(kbd->leds) == kbd->newleds)
168 return;
169
170 *(kbd->leds) = kbd->newleds;
171 kbd->led->dev = kbd->usbdev;
172 if (usb_submit_urb(kbd->led, GFP_ATOMIC))
173 err("usb_submit_urb(leds) failed");
174}
175
176static int usb_kbd_open(struct input_dev *dev)
177{
178 struct usb_kbd *kbd = dev->private;
179
180 kbd->irq->dev = kbd->usbdev;
181 if (usb_submit_urb(kbd->irq, GFP_KERNEL))
182 return -EIO;
183
184 return 0;
185}
186
187static void usb_kbd_close(struct input_dev *dev)
188{
189 struct usb_kbd *kbd = dev->private;
190
191 usb_kill_urb(kbd->irq);
192}
193
194static int usb_kbd_alloc_mem(struct usb_device *dev, struct usb_kbd *kbd)
195{
196 if (!(kbd->irq = usb_alloc_urb(0, GFP_KERNEL)))
197 return -1;
198 if (!(kbd->led = usb_alloc_urb(0, GFP_KERNEL)))
199 return -1;
200 if (!(kbd->new = usb_buffer_alloc(dev, 8, GFP_ATOMIC, &kbd->new_dma)))
201 return -1;
202 if (!(kbd->cr = usb_buffer_alloc(dev, sizeof(struct usb_ctrlrequest), GFP_ATOMIC, &kbd->cr_dma)))
203 return -1;
204 if (!(kbd->leds = usb_buffer_alloc(dev, 1, GFP_ATOMIC, &kbd->leds_dma)))
205 return -1;
206
207 return 0;
208}
209
210static void usb_kbd_free_mem(struct usb_device *dev, struct usb_kbd *kbd)
211{
212 usb_free_urb(kbd->irq);
213 usb_free_urb(kbd->led);
214 if (kbd->new)
215 usb_buffer_free(dev, 8, kbd->new, kbd->new_dma);
216 if (kbd->cr)
217 usb_buffer_free(dev, sizeof(struct usb_ctrlrequest), kbd->cr, kbd->cr_dma);
218 if (kbd->leds)
219 usb_buffer_free(dev, 1, kbd->leds, kbd->leds_dma);
220}
221
222static int usb_kbd_probe(struct usb_interface *iface,
223 const struct usb_device_id *id)
224{
225 struct usb_device *dev = interface_to_usbdev(iface);
226 struct usb_host_interface *interface;
227 struct usb_endpoint_descriptor *endpoint;
228 struct usb_kbd *kbd;
229 struct input_dev *input_dev;
230 int i, pipe, maxp;
231
232 interface = iface->cur_altsetting;
233
234 if (interface->desc.bNumEndpoints != 1)
235 return -ENODEV;
236
237 endpoint = &interface->endpoint[0].desc;
238 if (!usb_endpoint_is_int_in(endpoint))
239 return -ENODEV;
240
241 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
242 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
243
244 kbd = kzalloc(sizeof(struct usb_kbd), GFP_KERNEL);
245 input_dev = input_allocate_device();
246 if (!kbd || !input_dev)
247 goto fail1;
248
249 if (usb_kbd_alloc_mem(dev, kbd))
250 goto fail2;
251
252 kbd->usbdev = dev;
253 kbd->dev = input_dev;
254
255 if (dev->manufacturer)
256 strlcpy(kbd->name, dev->manufacturer, sizeof(kbd->name));
257
258 if (dev->product) {
259 if (dev->manufacturer)
260 strlcat(kbd->name, " ", sizeof(kbd->name));
261 strlcat(kbd->name, dev->product, sizeof(kbd->name));
262 }
263
264 if (!strlen(kbd->name))
265 snprintf(kbd->name, sizeof(kbd->name),
266 "USB HIDBP Keyboard %04x:%04x",
267 le16_to_cpu(dev->descriptor.idVendor),
268 le16_to_cpu(dev->descriptor.idProduct));
269
270 usb_make_path(dev, kbd->phys, sizeof(kbd->phys));
271 strlcpy(kbd->phys, "/input0", sizeof(kbd->phys));
272
273 input_dev->name = kbd->name;
274 input_dev->phys = kbd->phys;
275 usb_to_input_id(dev, &input_dev->id);
276 input_dev->cdev.dev = &iface->dev;
277 input_dev->private = kbd;
278
279 input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_LED) | BIT(EV_REP);
280 input_dev->ledbit[0] = BIT(LED_NUML) | BIT(LED_CAPSL) | BIT(LED_SCROLLL) | BIT(LED_COMPOSE) | BIT(LED_KANA);
281
282 for (i = 0; i < 255; i++)
283 set_bit(usb_kbd_keycode[i], input_dev->keybit);
284 clear_bit(0, input_dev->keybit);
285
286 input_dev->event = usb_kbd_event;
287 input_dev->open = usb_kbd_open;
288 input_dev->close = usb_kbd_close;
289
290 usb_fill_int_urb(kbd->irq, dev, pipe,
291 kbd->new, (maxp > 8 ? 8 : maxp),
292 usb_kbd_irq, kbd, endpoint->bInterval);
293 kbd->irq->transfer_dma = kbd->new_dma;
294 kbd->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
295
296 kbd->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE;
297 kbd->cr->bRequest = 0x09;
298 kbd->cr->wValue = cpu_to_le16(0x200);
299 kbd->cr->wIndex = cpu_to_le16(interface->desc.bInterfaceNumber);
300 kbd->cr->wLength = cpu_to_le16(1);
301
302 usb_fill_control_urb(kbd->led, dev, usb_sndctrlpipe(dev, 0),
303 (void *) kbd->cr, kbd->leds, 1,
304 usb_kbd_led, kbd);
305 kbd->led->setup_dma = kbd->cr_dma;
306 kbd->led->transfer_dma = kbd->leds_dma;
307 kbd->led->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP);
308
309 input_register_device(kbd->dev);
310
311 usb_set_intfdata(iface, kbd);
312 return 0;
313
314fail2: usb_kbd_free_mem(dev, kbd);
315fail1: input_free_device(input_dev);
316 kfree(kbd);
317 return -ENOMEM;
318}
319
320static void usb_kbd_disconnect(struct usb_interface *intf)
321{
322 struct usb_kbd *kbd = usb_get_intfdata (intf);
323
324 usb_set_intfdata(intf, NULL);
325 if (kbd) {
326 usb_kill_urb(kbd->irq);
327 input_unregister_device(kbd->dev);
328 usb_kbd_free_mem(interface_to_usbdev(intf), kbd);
329 kfree(kbd);
330 }
331}
332
333static struct usb_device_id usb_kbd_id_table [] = {
334 { USB_INTERFACE_INFO(USB_INTERFACE_CLASS_HID, USB_INTERFACE_SUBCLASS_BOOT,
335 USB_INTERFACE_PROTOCOL_KEYBOARD) },
336 { } /* Terminating entry */
337};
338
339MODULE_DEVICE_TABLE (usb, usb_kbd_id_table);
340
341static struct usb_driver usb_kbd_driver = {
342 .name = "usbkbd",
343 .probe = usb_kbd_probe,
344 .disconnect = usb_kbd_disconnect,
345 .id_table = usb_kbd_id_table,
346};
347
348static int __init usb_kbd_init(void)
349{
350 int result = usb_register(&usb_kbd_driver);
351 if (result == 0)
352 info(DRIVER_VERSION ":" DRIVER_DESC);
353 return result;
354}
355
356static void __exit usb_kbd_exit(void)
357{
358 usb_deregister(&usb_kbd_driver);
359}
360
361module_init(usb_kbd_init);
362module_exit(usb_kbd_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-01 17:41:51 -0400