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Input: remove user counters from drivers/usb/input since input
[linux-2.6/s3c2410-cpufreq.git] / drivers / usb / input / usbkbd.c
blobf35db1974c4258407e607b5f5ae56ef2df38e72b
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
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
84 static void usb_kbd_irq(struct urb *urb, struct pt_regs *regs)
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 input_regs(&kbd->dev, regs);
102
103 for (i = 0; i < 8; i++)
104 input_report_key(&kbd->dev, usb_kbd_keycode[i + 224], (kbd->new[0] >> i) & 1);
105
106 for (i = 2; i < 8; i++) {
107
108 if (kbd->old[i] > 3 && memscan(kbd->new + 2, kbd->old[i], 6) == kbd->new + 8) {
109 if (usb_kbd_keycode[kbd->old[i]])
110 input_report_key(&kbd->dev, usb_kbd_keycode[kbd->old[i]], 0);
111 else
112 info("Unknown key (scancode %#x) released.", kbd->old[i]);
113 }
114
115 if (kbd->new[i] > 3 && memscan(kbd->old + 2, kbd->new[i], 6) == kbd->old + 8) {
116 if (usb_kbd_keycode[kbd->new[i]])
117 input_report_key(&kbd->dev, usb_kbd_keycode[kbd->new[i]], 1);
118 else
119 info("Unknown key (scancode %#x) pressed.", kbd->new[i]);
120 }
121 }
122
123 input_sync(&kbd->dev);
124
125 memcpy(kbd->old, kbd->new, 8);
126
127 resubmit:
128 i = usb_submit_urb (urb, SLAB_ATOMIC);
129 if (i)
130 err ("can't resubmit intr, %s-%s/input0, status %d",
131 kbd->usbdev->bus->bus_name,
132 kbd->usbdev->devpath, i);
133 }
134
135 static int usb_kbd_event(struct input_dev *dev, unsigned int type,
136 unsigned int code, int value)
137 {
138 struct usb_kbd *kbd = dev->private;
139
140 if (type != EV_LED)
141 return -1;
142
143
144 kbd->newleds = (!!test_bit(LED_KANA, dev->led) << 3) | (!!test_bit(LED_COMPOSE, dev->led) << 3) |
145 (!!test_bit(LED_SCROLLL, dev->led) << 2) | (!!test_bit(LED_CAPSL, dev->led) << 1) |
146 (!!test_bit(LED_NUML, dev->led));
147
148 if (kbd->led->status == -EINPROGRESS)
149 return 0;
150
151 if (*(kbd->leds) == kbd->newleds)
152 return 0;
153
154 *(kbd->leds) = kbd->newleds;
155 kbd->led->dev = kbd->usbdev;
156 if (usb_submit_urb(kbd->led, GFP_ATOMIC))
157 err("usb_submit_urb(leds) failed");
158
159 return 0;
160 }
161
162 static void usb_kbd_led(struct urb *urb, struct pt_regs *regs)
163 {
164 struct usb_kbd *kbd = urb->context;
165
166 if (urb->status)
167 warn("led urb status %d received", urb->status);
168
169 if (*(kbd->leds) == kbd->newleds)
170 return;
171
172 *(kbd->leds) = kbd->newleds;
173 kbd->led->dev = kbd->usbdev;
174 if (usb_submit_urb(kbd->led, GFP_ATOMIC))
175 err("usb_submit_urb(leds) failed");
176 }
177
178 static int usb_kbd_open(struct input_dev *dev)
179 {
180 struct usb_kbd *kbd = dev->private;
181
182 kbd->irq->dev = kbd->usbdev;
183 if (usb_submit_urb(kbd->irq, GFP_KERNEL))
184 return -EIO;
185
186 return 0;
187 }
188
189 static void usb_kbd_close(struct input_dev *dev)
190 {
191 struct usb_kbd *kbd = dev->private;
192
193 usb_kill_urb(kbd->irq);
194 }
195
196 static int usb_kbd_alloc_mem(struct usb_device *dev, struct usb_kbd *kbd)
197 {
198 if (!(kbd->irq = usb_alloc_urb(0, GFP_KERNEL)))
199 return -1;
200 if (!(kbd->led = usb_alloc_urb(0, GFP_KERNEL)))
201 return -1;
202 if (!(kbd->new = usb_buffer_alloc(dev, 8, SLAB_ATOMIC, &kbd->new_dma)))
203 return -1;
204 if (!(kbd->cr = usb_buffer_alloc(dev, sizeof(struct usb_ctrlrequest), SLAB_ATOMIC, &kbd->cr_dma)))
205 return -1;
206 if (!(kbd->leds = usb_buffer_alloc(dev, 1, SLAB_ATOMIC, &kbd->leds_dma)))
207 return -1;
208
209 return 0;
210 }
211
212 static void usb_kbd_free_mem(struct usb_device *dev, struct usb_kbd *kbd)
213 {
214 if (kbd->irq)
215 usb_free_urb(kbd->irq);
216 if (kbd->led)
217 usb_free_urb(kbd->led);
218 if (kbd->new)
219 usb_buffer_free(dev, 8, kbd->new, kbd->new_dma);
220 if (kbd->cr)
221 usb_buffer_free(dev, sizeof(struct usb_ctrlrequest), kbd->cr, kbd->cr_dma);
222 if (kbd->leds)
223 usb_buffer_free(dev, 1, kbd->leds, kbd->leds_dma);
224 }
225
226 static int usb_kbd_probe(struct usb_interface *iface,
227 const struct usb_device_id *id)
228 {
229 struct usb_device * dev = interface_to_usbdev(iface);
230 struct usb_host_interface *interface;
231 struct usb_endpoint_descriptor *endpoint;
232 struct usb_kbd *kbd;
233 int i, pipe, maxp;
234 char path[64];
235
236 interface = iface->cur_altsetting;
237
238 if (interface->desc.bNumEndpoints != 1)
239 return -ENODEV;
240
241 endpoint = &interface->endpoint[0].desc;
242 if (!(endpoint->bEndpointAddress & 0x80))
243 return -ENODEV;
244 if ((endpoint->bmAttributes & 3) != 3)
245 return -ENODEV;
246
247 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
248 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
249
250 if (!(kbd = kmalloc(sizeof(struct usb_kbd), GFP_KERNEL)))
251 return -ENOMEM;
252 memset(kbd, 0, sizeof(struct usb_kbd));
253
254 if (usb_kbd_alloc_mem(dev, kbd)) {
255 usb_kbd_free_mem(dev, kbd);
256 kfree(kbd);
257 return -ENOMEM;
258 }
259
260 kbd->usbdev = dev;
261
262 kbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_LED) | BIT(EV_REP);
263 kbd->dev.ledbit[0] = BIT(LED_NUML) | BIT(LED_CAPSL) | BIT(LED_SCROLLL) | BIT(LED_COMPOSE) | BIT(LED_KANA);
264
265 for (i = 0; i < 255; i++)
266 set_bit(usb_kbd_keycode[i], kbd->dev.keybit);
267 clear_bit(0, kbd->dev.keybit);
268
269 kbd->dev.private = kbd;
270 kbd->dev.event = usb_kbd_event;
271 kbd->dev.open = usb_kbd_open;
272 kbd->dev.close = usb_kbd_close;
273
274 usb_fill_int_urb(kbd->irq, dev, pipe,
275 kbd->new, (maxp > 8 ? 8 : maxp),
276 usb_kbd_irq, kbd, endpoint->bInterval);
277 kbd->irq->transfer_dma = kbd->new_dma;
278 kbd->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
279
280 kbd->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE;
281 kbd->cr->bRequest = 0x09;
282 kbd->cr->wValue = cpu_to_le16(0x200);
283 kbd->cr->wIndex = cpu_to_le16(interface->desc.bInterfaceNumber);
284 kbd->cr->wLength = cpu_to_le16(1);
285
286 usb_make_path(dev, path, 64);
287 sprintf(kbd->phys, "%s/input0", path);
288
289 kbd->dev.name = kbd->name;
290 kbd->dev.phys = kbd->phys;
291 kbd->dev.id.bustype = BUS_USB;
292 kbd->dev.id.vendor = le16_to_cpu(dev->descriptor.idVendor);
293 kbd->dev.id.product = le16_to_cpu(dev->descriptor.idProduct);
294 kbd->dev.id.version = le16_to_cpu(dev->descriptor.bcdDevice);
295 kbd->dev.dev = &iface->dev;
296
297 if (dev->manufacturer)
298 strcat(kbd->name, dev->manufacturer);
299 if (dev->product)
300 sprintf(kbd->name, "%s %s", kbd->name, dev->product);
301
302 if (!strlen(kbd->name))
303 sprintf(kbd->name, "USB HIDBP Keyboard %04x:%04x",
304 kbd->dev.id.vendor, kbd->dev.id.product);
305
306 usb_fill_control_urb(kbd->led, dev, usb_sndctrlpipe(dev, 0),
307 (void *) kbd->cr, kbd->leds, 1,
308 usb_kbd_led, kbd);
309 kbd->led->setup_dma = kbd->cr_dma;
310 kbd->led->transfer_dma = kbd->leds_dma;
311 kbd->led->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP
312 | URB_NO_SETUP_DMA_MAP);
313
314 input_register_device(&kbd->dev);
315
316 printk(KERN_INFO "input: %s on %s\n", kbd->name, path);
317
318 usb_set_intfdata(iface, kbd);
319 return 0;
320 }
321
322 static void usb_kbd_disconnect(struct usb_interface *intf)
323 {
324 struct usb_kbd *kbd = usb_get_intfdata (intf);
325
326 usb_set_intfdata(intf, NULL);
327 if (kbd) {
328 usb_kill_urb(kbd->irq);
329 input_unregister_device(&kbd->dev);
330 usb_kbd_free_mem(interface_to_usbdev(intf), kbd);
331 kfree(kbd);
332 }
333 }
334
335 static struct usb_device_id usb_kbd_id_table [] = {
336 { USB_INTERFACE_INFO(3, 1, 1) },
337 { } /* Terminating entry */
338 };
339
340 MODULE_DEVICE_TABLE (usb, usb_kbd_id_table);
341
342 static struct usb_driver usb_kbd_driver = {
343 .owner = THIS_MODULE,
344 .name = "usbkbd",
345 .probe = usb_kbd_probe,
346 .disconnect = usb_kbd_disconnect,
347 .id_table = usb_kbd_id_table,
348 };
349
350 static int __init usb_kbd_init(void)
351 {
352 int result = usb_register(&usb_kbd_driver);
353 if (result == 0)
354 info(DRIVER_VERSION ":" DRIVER_DESC);
355 return result;
356 }
357
358 static void __exit usb_kbd_exit(void)
359 {
360 usb_deregister(&usb_kbd_driver);
361 }
362
363 module_init(usb_kbd_init);
364 module_exit(usb_kbd_exit);
cpufreq for S3C2410