]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
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/input.h> | |
33 | #include <linux/init.h> | |
34 | #include <linux/usb.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 | ||
44 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
45 | MODULE_DESCRIPTION(DRIVER_DESC); | |
46 | MODULE_LICENSE(DRIVER_LICENSE); | |
47 | ||
48 | static 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 | ||
67 | struct 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 | int open; | |
76 | ||
77 | unsigned char *new; | |
78 | struct usb_ctrlrequest *cr; | |
79 | unsigned char *leds; | |
80 | dma_addr_t cr_dma; | |
81 | dma_addr_t new_dma; | |
82 | dma_addr_t leds_dma; | |
83 | }; | |
84 | ||
85 | static void usb_kbd_irq(struct urb *urb, struct pt_regs *regs) | |
86 | { | |
87 | struct usb_kbd *kbd = urb->context; | |
88 | int i; | |
89 | ||
90 | switch (urb->status) { | |
91 | case 0: /* success */ | |
92 | break; | |
93 | case -ECONNRESET: /* unlink */ | |
94 | case -ENOENT: | |
95 | case -ESHUTDOWN: | |
96 | return; | |
97 | /* -EPIPE: should clear the halt */ | |
98 | default: /* error */ | |
99 | goto resubmit; | |
100 | } | |
101 | ||
102 | input_regs(&kbd->dev, regs); | |
103 | ||
104 | for (i = 0; i < 8; i++) | |
105 | input_report_key(&kbd->dev, usb_kbd_keycode[i + 224], (kbd->new[0] >> i) & 1); | |
106 | ||
107 | for (i = 2; i < 8; i++) { | |
108 | ||
109 | if (kbd->old[i] > 3 && memscan(kbd->new + 2, kbd->old[i], 6) == kbd->new + 8) { | |
110 | if (usb_kbd_keycode[kbd->old[i]]) | |
111 | input_report_key(&kbd->dev, usb_kbd_keycode[kbd->old[i]], 0); | |
112 | else | |
113 | info("Unknown key (scancode %#x) released.", kbd->old[i]); | |
114 | } | |
115 | ||
116 | if (kbd->new[i] > 3 && memscan(kbd->old + 2, kbd->new[i], 6) == kbd->old + 8) { | |
117 | if (usb_kbd_keycode[kbd->new[i]]) | |
118 | input_report_key(&kbd->dev, usb_kbd_keycode[kbd->new[i]], 1); | |
119 | else | |
120 | info("Unknown key (scancode %#x) pressed.", kbd->new[i]); | |
121 | } | |
122 | } | |
123 | ||
124 | input_sync(&kbd->dev); | |
125 | ||
126 | memcpy(kbd->old, kbd->new, 8); | |
127 | ||
128 | resubmit: | |
129 | i = usb_submit_urb (urb, SLAB_ATOMIC); | |
130 | if (i) | |
131 | err ("can't resubmit intr, %s-%s/input0, status %d", | |
132 | kbd->usbdev->bus->bus_name, | |
133 | kbd->usbdev->devpath, i); | |
134 | } | |
135 | ||
be5e3383 AB |
136 | static int usb_kbd_event(struct input_dev *dev, unsigned int type, |
137 | unsigned int code, int value) | |
1da177e4 LT |
138 | { |
139 | struct usb_kbd *kbd = dev->private; | |
140 | ||
141 | if (type != EV_LED) | |
142 | return -1; | |
143 | ||
144 | ||
145 | kbd->newleds = (!!test_bit(LED_KANA, dev->led) << 3) | (!!test_bit(LED_COMPOSE, dev->led) << 3) | | |
146 | (!!test_bit(LED_SCROLLL, dev->led) << 2) | (!!test_bit(LED_CAPSL, dev->led) << 1) | | |
147 | (!!test_bit(LED_NUML, dev->led)); | |
148 | ||
149 | if (kbd->led->status == -EINPROGRESS) | |
150 | return 0; | |
151 | ||
152 | if (*(kbd->leds) == kbd->newleds) | |
153 | return 0; | |
154 | ||
155 | *(kbd->leds) = kbd->newleds; | |
156 | kbd->led->dev = kbd->usbdev; | |
157 | if (usb_submit_urb(kbd->led, GFP_ATOMIC)) | |
158 | err("usb_submit_urb(leds) failed"); | |
159 | ||
160 | return 0; | |
161 | } | |
162 | ||
163 | static void usb_kbd_led(struct urb *urb, struct pt_regs *regs) | |
164 | { | |
165 | struct usb_kbd *kbd = urb->context; | |
166 | ||
167 | if (urb->status) | |
168 | warn("led urb status %d received", urb->status); | |
169 | ||
170 | if (*(kbd->leds) == kbd->newleds) | |
171 | return; | |
172 | ||
173 | *(kbd->leds) = kbd->newleds; | |
174 | kbd->led->dev = kbd->usbdev; | |
175 | if (usb_submit_urb(kbd->led, GFP_ATOMIC)) | |
176 | err("usb_submit_urb(leds) failed"); | |
177 | } | |
178 | ||
179 | static int usb_kbd_open(struct input_dev *dev) | |
180 | { | |
181 | struct usb_kbd *kbd = dev->private; | |
182 | ||
183 | if (kbd->open++) | |
184 | return 0; | |
185 | ||
186 | kbd->irq->dev = kbd->usbdev; | |
187 | if (usb_submit_urb(kbd->irq, GFP_KERNEL)) { | |
188 | kbd->open--; | |
189 | return -EIO; | |
190 | } | |
191 | ||
192 | return 0; | |
193 | } | |
194 | ||
195 | static void usb_kbd_close(struct input_dev *dev) | |
196 | { | |
197 | struct usb_kbd *kbd = dev->private; | |
198 | ||
199 | if (!--kbd->open) | |
200 | usb_kill_urb(kbd->irq); | |
201 | } | |
202 | ||
203 | static int usb_kbd_alloc_mem(struct usb_device *dev, struct usb_kbd *kbd) | |
204 | { | |
205 | if (!(kbd->irq = usb_alloc_urb(0, GFP_KERNEL))) | |
206 | return -1; | |
207 | if (!(kbd->led = usb_alloc_urb(0, GFP_KERNEL))) | |
208 | return -1; | |
209 | if (!(kbd->new = usb_buffer_alloc(dev, 8, SLAB_ATOMIC, &kbd->new_dma))) | |
210 | return -1; | |
211 | if (!(kbd->cr = usb_buffer_alloc(dev, sizeof(struct usb_ctrlrequest), SLAB_ATOMIC, &kbd->cr_dma))) | |
212 | return -1; | |
213 | if (!(kbd->leds = usb_buffer_alloc(dev, 1, SLAB_ATOMIC, &kbd->leds_dma))) | |
214 | return -1; | |
215 | ||
216 | return 0; | |
217 | } | |
218 | ||
219 | static void usb_kbd_free_mem(struct usb_device *dev, struct usb_kbd *kbd) | |
220 | { | |
221 | if (kbd->irq) | |
222 | usb_free_urb(kbd->irq); | |
223 | if (kbd->led) | |
224 | usb_free_urb(kbd->led); | |
225 | if (kbd->new) | |
226 | usb_buffer_free(dev, 8, kbd->new, kbd->new_dma); | |
227 | if (kbd->cr) | |
228 | usb_buffer_free(dev, sizeof(struct usb_ctrlrequest), kbd->cr, kbd->cr_dma); | |
229 | if (kbd->leds) | |
230 | usb_buffer_free(dev, 1, kbd->leds, kbd->leds_dma); | |
231 | } | |
232 | ||
233 | static int usb_kbd_probe(struct usb_interface *iface, | |
234 | const struct usb_device_id *id) | |
235 | { | |
236 | struct usb_device * dev = interface_to_usbdev(iface); | |
237 | struct usb_host_interface *interface; | |
238 | struct usb_endpoint_descriptor *endpoint; | |
239 | struct usb_kbd *kbd; | |
240 | int i, pipe, maxp; | |
241 | char path[64]; | |
242 | ||
243 | interface = iface->cur_altsetting; | |
244 | ||
245 | if (interface->desc.bNumEndpoints != 1) | |
246 | return -ENODEV; | |
247 | ||
248 | endpoint = &interface->endpoint[0].desc; | |
249 | if (!(endpoint->bEndpointAddress & 0x80)) | |
250 | return -ENODEV; | |
251 | if ((endpoint->bmAttributes & 3) != 3) | |
252 | return -ENODEV; | |
253 | ||
254 | pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress); | |
255 | maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe)); | |
256 | ||
257 | if (!(kbd = kmalloc(sizeof(struct usb_kbd), GFP_KERNEL))) | |
258 | return -ENOMEM; | |
259 | memset(kbd, 0, sizeof(struct usb_kbd)); | |
260 | ||
261 | if (usb_kbd_alloc_mem(dev, kbd)) { | |
262 | usb_kbd_free_mem(dev, kbd); | |
263 | kfree(kbd); | |
264 | return -ENOMEM; | |
265 | } | |
266 | ||
267 | kbd->usbdev = dev; | |
268 | ||
269 | kbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_LED) | BIT(EV_REP); | |
270 | kbd->dev.ledbit[0] = BIT(LED_NUML) | BIT(LED_CAPSL) | BIT(LED_SCROLLL) | BIT(LED_COMPOSE) | BIT(LED_KANA); | |
271 | ||
272 | for (i = 0; i < 255; i++) | |
273 | set_bit(usb_kbd_keycode[i], kbd->dev.keybit); | |
274 | clear_bit(0, kbd->dev.keybit); | |
275 | ||
276 | kbd->dev.private = kbd; | |
277 | kbd->dev.event = usb_kbd_event; | |
278 | kbd->dev.open = usb_kbd_open; | |
279 | kbd->dev.close = usb_kbd_close; | |
280 | ||
281 | usb_fill_int_urb(kbd->irq, dev, pipe, | |
282 | kbd->new, (maxp > 8 ? 8 : maxp), | |
283 | usb_kbd_irq, kbd, endpoint->bInterval); | |
284 | kbd->irq->transfer_dma = kbd->new_dma; | |
285 | kbd->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
286 | ||
287 | kbd->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE; | |
288 | kbd->cr->bRequest = 0x09; | |
289 | kbd->cr->wValue = cpu_to_le16(0x200); | |
290 | kbd->cr->wIndex = cpu_to_le16(interface->desc.bInterfaceNumber); | |
291 | kbd->cr->wLength = cpu_to_le16(1); | |
292 | ||
293 | usb_make_path(dev, path, 64); | |
294 | sprintf(kbd->phys, "%s/input0", path); | |
295 | ||
296 | kbd->dev.name = kbd->name; | |
297 | kbd->dev.phys = kbd->phys; | |
298 | kbd->dev.id.bustype = BUS_USB; | |
299 | kbd->dev.id.vendor = le16_to_cpu(dev->descriptor.idVendor); | |
300 | kbd->dev.id.product = le16_to_cpu(dev->descriptor.idProduct); | |
301 | kbd->dev.id.version = le16_to_cpu(dev->descriptor.bcdDevice); | |
302 | kbd->dev.dev = &iface->dev; | |
303 | ||
304 | if (dev->manufacturer) | |
305 | strcat(kbd->name, dev->manufacturer); | |
306 | if (dev->product) | |
307 | sprintf(kbd->name, "%s %s", kbd->name, dev->product); | |
308 | ||
309 | if (!strlen(kbd->name)) | |
310 | sprintf(kbd->name, "USB HIDBP Keyboard %04x:%04x", | |
311 | kbd->dev.id.vendor, kbd->dev.id.product); | |
312 | ||
313 | usb_fill_control_urb(kbd->led, dev, usb_sndctrlpipe(dev, 0), | |
314 | (void *) kbd->cr, kbd->leds, 1, | |
315 | usb_kbd_led, kbd); | |
316 | kbd->led->setup_dma = kbd->cr_dma; | |
317 | kbd->led->transfer_dma = kbd->leds_dma; | |
318 | kbd->led->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | |
319 | | URB_NO_SETUP_DMA_MAP); | |
320 | ||
321 | input_register_device(&kbd->dev); | |
322 | ||
323 | printk(KERN_INFO "input: %s on %s\n", kbd->name, path); | |
324 | ||
325 | usb_set_intfdata(iface, kbd); | |
326 | return 0; | |
327 | } | |
328 | ||
329 | static void usb_kbd_disconnect(struct usb_interface *intf) | |
330 | { | |
331 | struct usb_kbd *kbd = usb_get_intfdata (intf); | |
332 | ||
333 | usb_set_intfdata(intf, NULL); | |
334 | if (kbd) { | |
335 | usb_kill_urb(kbd->irq); | |
336 | input_unregister_device(&kbd->dev); | |
337 | usb_kbd_free_mem(interface_to_usbdev(intf), kbd); | |
338 | kfree(kbd); | |
339 | } | |
340 | } | |
341 | ||
342 | static struct usb_device_id usb_kbd_id_table [] = { | |
343 | { USB_INTERFACE_INFO(3, 1, 1) }, | |
344 | { } /* Terminating entry */ | |
345 | }; | |
346 | ||
347 | MODULE_DEVICE_TABLE (usb, usb_kbd_id_table); | |
348 | ||
349 | static struct usb_driver usb_kbd_driver = { | |
350 | .owner = THIS_MODULE, | |
351 | .name = "usbkbd", | |
352 | .probe = usb_kbd_probe, | |
353 | .disconnect = usb_kbd_disconnect, | |
354 | .id_table = usb_kbd_id_table, | |
355 | }; | |
356 | ||
357 | static int __init usb_kbd_init(void) | |
358 | { | |
359 | int result = usb_register(&usb_kbd_driver); | |
360 | if (result == 0) | |
361 | info(DRIVER_VERSION ":" DRIVER_DESC); | |
362 | return result; | |
363 | } | |
364 | ||
365 | static void __exit usb_kbd_exit(void) | |
366 | { | |
367 | usb_deregister(&usb_kbd_driver); | |
368 | } | |
369 | ||
370 | module_init(usb_kbd_init); | |
371 | module_exit(usb_kbd_exit); |