USB: Put phidgets driver in a sysfs class
[linux-2.6.git] / drivers / usb / misc / phidgetkit.c
1 /*
2  * USB PhidgetInterfaceKit driver 1.0
3  *
4  * Copyright (C) 2004, 2006 Sean Young <sean@mess.org>
5  * Copyright (C) 2005 Daniel Saakes <daniel@saakes.net>
6  * Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
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 is a driver for the USB PhidgetInterfaceKit.
14  */
15
16 #include <linux/kernel.h>
17 #include <linux/errno.h>
18 #include <linux/init.h>
19 #include <linux/slab.h>
20 #include <linux/module.h>
21 #include <linux/usb.h>
22
23 #include "phidget.h"
24
25 #define DRIVER_AUTHOR "Sean Young <sean@mess.org>"
26 #define DRIVER_DESC "USB PhidgetInterfaceKit Driver"
27
28 #define USB_VENDOR_ID_GLAB              0x06c2
29 #define USB_DEVICE_ID_INTERFACEKIT004   0x0040
30 #define USB_DEVICE_ID_INTERFACEKIT01616 0x0044
31 #define USB_DEVICE_ID_INTERFACEKIT888   0x0045
32 #define USB_DEVICE_ID_INTERFACEKIT047   0x0051
33 #define USB_DEVICE_ID_INTERFACEKIT088   0x0053
34
35 #define USB_VENDOR_ID_WISEGROUP         0x0925
36 #define USB_DEVICE_ID_INTERFACEKIT884   0x8201
37
38 #define MAX_INTERFACES                  16
39
40 #define URB_INT_SIZE                    8
41
42 struct driver_interfacekit {
43         int sensors;
44         int inputs;
45         int outputs;
46         int has_lcd;
47 };
48 #define ifkit(_sensors, _inputs, _outputs, _lcd)                        \
49 static struct driver_interfacekit ph_##_sensors##_inputs##_outputs = {  \
50         .sensors        = _sensors,                                     \
51         .inputs         = _inputs,                                      \
52         .outputs        = _outputs,                                     \
53         .has_lcd        = _lcd,                                         \
54 };
55 ifkit(0, 0, 4, 0);
56 ifkit(8, 8, 8, 0);
57 ifkit(0, 4, 7, 1);
58 ifkit(8, 8, 4, 0);
59 ifkit(0, 8, 8, 1);
60 ifkit(0, 16, 16, 0);
61
62 static unsigned long device_no;
63
64 struct interfacekit {
65         struct usb_device *udev;
66         struct usb_interface *intf;
67         struct driver_interfacekit *ifkit;
68         struct device *dev;
69         unsigned long outputs;
70         int dev_no;
71         u8 inputs[MAX_INTERFACES];
72         u16 sensors[MAX_INTERFACES];
73         u8 lcd_files_on;
74
75         struct urb *irq;
76         unsigned char *data;
77         dma_addr_t data_dma;
78
79         struct work_struct do_notify;
80         unsigned long input_events;
81         unsigned long sensor_events;
82 };
83
84 static struct usb_device_id id_table[] = {
85         {USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_INTERFACEKIT004),
86                 .driver_info = (kernel_ulong_t)&ph_004},
87         {USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_INTERFACEKIT888),
88                 .driver_info = (kernel_ulong_t)&ph_888},
89         {USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_INTERFACEKIT047),
90                 .driver_info = (kernel_ulong_t)&ph_047},
91         {USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_INTERFACEKIT088),
92                 .driver_info = (kernel_ulong_t)&ph_088},
93         {USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_INTERFACEKIT01616),
94                 .driver_info = (kernel_ulong_t)&ph_01616},
95         {USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_INTERFACEKIT884),
96                 .driver_info = (kernel_ulong_t)&ph_884},
97         {}
98 };
99 MODULE_DEVICE_TABLE(usb, id_table);
100
101 static int change_outputs(struct interfacekit *kit, int output_num, int enable)
102 {
103         u8 *buffer;
104         int retval;
105
106         if (enable)
107                 set_bit(output_num, &kit->outputs);
108         else
109                 clear_bit(output_num, &kit->outputs);
110
111         buffer = kzalloc(4, GFP_KERNEL);
112         if (!buffer) {
113                 dev_err(&kit->udev->dev, "%s - out of memory\n", __FUNCTION__);
114                 return -ENOMEM;
115         }
116         buffer[0] = (u8)kit->outputs;
117         buffer[1] = (u8)(kit->outputs >> 8);
118
119         dev_dbg(&kit->udev->dev, "sending data: 0x%04x\n", (u16)kit->outputs);
120
121         retval = usb_control_msg(kit->udev,
122                          usb_sndctrlpipe(kit->udev, 0),
123                          0x09, 0x21, 0x0200, 0x0000, buffer, 4, 2000);
124
125         if (retval != 4)
126                 dev_err(&kit->udev->dev, "usb_control_msg returned %d\n", 
127                                 retval);
128         kfree(buffer);
129
130         return retval < 0 ? retval : 0;
131 }
132
133 static int change_string(struct interfacekit *kit, const char *display, unsigned char row)
134 {
135         unsigned char *buffer;
136         unsigned char *form_buffer;
137         int retval = -ENOMEM;
138         int i,j, len, buf_ptr;
139         
140         buffer = kmalloc(8, GFP_KERNEL);
141         form_buffer = kmalloc(30, GFP_KERNEL);
142         if ((!buffer) || (!form_buffer)) {
143                 dev_err(&kit->udev->dev, "%s - out of memory\n", __FUNCTION__);
144                 goto exit;
145         }
146
147         len = strlen(display);
148         if (len > 20)
149                 len = 20;
150
151         dev_dbg(&kit->udev->dev, "Setting LCD line %d to %s\n", row, display);
152
153         form_buffer[0] = row * 0x40 + 0x80;
154         form_buffer[1] = 0x02;
155         buf_ptr = 2;
156         for (i = 0; i<len; i++)
157                 form_buffer[buf_ptr++] = display[i];
158
159         for (i = 0; i < (20 - len); i++)
160                 form_buffer[buf_ptr++] = 0x20;
161         form_buffer[buf_ptr++] = 0x01;
162         form_buffer[buf_ptr++] = row * 0x40 + 0x80 + strlen(display);
163
164         for (i = 0; i < buf_ptr; i += 7) {
165                 if ((buf_ptr - i) > 7)
166                         len = 7;
167                 else
168                         len = (buf_ptr - i);
169                 for (j = 0; j < len; j++)
170                         buffer[j] = form_buffer[i + j];
171                 buffer[7] = len;
172
173                 retval = usb_control_msg(kit->udev,
174                                  usb_sndctrlpipe(kit->udev, 0),
175                                  0x09, 0x21, 0x0200, 0x0000, buffer, 8, 2000);
176                 if (retval < 0)
177                         goto exit;
178         }
179
180         retval = 0;
181 exit:
182         kfree(buffer);
183         kfree(form_buffer);
184
185         return retval;
186 }
187
188 #define set_lcd_line(number)    \
189 static ssize_t lcd_line_##number(struct device *dev,                    \
190                                         struct device_attribute *attr,  \
191                                         const char *buf, size_t count)  \
192 {                                                                       \
193         struct interfacekit *kit = dev_get_drvdata(dev);                \
194         change_string(kit, buf, number - 1);                            \
195         return count;                                                   \
196 }                                                                       \
197 static DEVICE_ATTR(lcd_line_##number, S_IWUGO, NULL, lcd_line_##number);
198 set_lcd_line(1);
199 set_lcd_line(2);
200
201 static ssize_t set_backlight(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
202 {
203         struct interfacekit *kit = dev_get_drvdata(dev);
204         int enabled;
205         unsigned char *buffer;
206         int retval = -ENOMEM;
207         
208         buffer = kzalloc(8, GFP_KERNEL);
209         if (!buffer) {
210                 dev_err(&kit->udev->dev, "%s - out of memory\n", __FUNCTION__);
211                 goto exit;
212         }
213
214         if (sscanf(buf, "%d", &enabled) < 1) {
215                 retval = -EINVAL;
216                 goto exit;
217         }
218         if (enabled)
219                 buffer[0] = 0x01;
220         buffer[7] = 0x11;
221
222         dev_dbg(&kit->udev->dev, "Setting backlight to %s\n", enabled ? "on" : "off");
223         
224         retval = usb_control_msg(kit->udev,
225                          usb_sndctrlpipe(kit->udev, 0),
226                          0x09, 0x21, 0x0200, 0x0000, buffer, 8, 2000);
227         if (retval < 0)
228                 goto exit;
229
230         retval = count;
231 exit:
232         kfree(buffer);
233         return retval;
234 }
235 static DEVICE_ATTR(backlight, S_IWUGO, NULL, set_backlight);
236
237 static void remove_lcd_files(struct interfacekit *kit)
238 {
239         if (kit->lcd_files_on) {
240                 dev_dbg(&kit->udev->dev, "Removing lcd files\n");
241                 device_remove_file(kit->dev, &dev_attr_lcd_line_1);
242                 device_remove_file(kit->dev, &dev_attr_lcd_line_2);
243                 device_remove_file(kit->dev, &dev_attr_backlight);
244         }
245 }
246
247 static ssize_t enable_lcd_files(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
248 {
249         struct interfacekit *kit = dev_get_drvdata(dev);
250         int enable;
251         
252         if (kit->ifkit->has_lcd == 0)
253                 return -ENODEV;
254
255         if (sscanf(buf, "%d", &enable) < 1)
256                 return -EINVAL;
257
258         if (enable) {
259                 if (!kit->lcd_files_on) {
260                         dev_dbg(&kit->udev->dev, "Adding lcd files\n");
261                         device_create_file(kit->dev, &dev_attr_lcd_line_1);
262                         device_create_file(kit->dev, &dev_attr_lcd_line_2);
263                         device_create_file(kit->dev, &dev_attr_backlight);
264                         kit->lcd_files_on = 1;
265                 }
266         } else {
267                 if (kit->lcd_files_on) {
268                         remove_lcd_files(kit);
269                         kit->lcd_files_on = 0;
270                 }
271         }
272         
273         return count;
274 }
275 static DEVICE_ATTR(lcd, S_IWUGO, NULL, enable_lcd_files);
276
277 static void interfacekit_irq(struct urb *urb, struct pt_regs *regs)
278 {
279         struct interfacekit *kit = urb->context;
280         unsigned char *buffer = kit->data;
281         int i, level, sensor;
282         int status;
283
284         switch (urb->status) {
285         case 0:                 /* success */
286                 break;
287         case -ECONNRESET:       /* unlink */
288         case -ENOENT:
289         case -ESHUTDOWN:
290                 return;
291         /* -EPIPE:  should clear the halt */
292         default:                /* error */
293                 goto resubmit;
294         }
295
296         /* digital inputs */
297         if (kit->ifkit->inputs == 16) {
298                 for (i=0; i < 8; i++) {
299                         level = (buffer[0] >> i) & 1;
300                         if (kit->inputs[i] != level) {
301                                 kit->inputs[i] = level;
302                                 set_bit(i, &kit->input_events);
303                         }
304                         level = (buffer[1] >> i) & 1;
305                         if (kit->inputs[8 + i] != level) {
306                                 kit->inputs[8 + i] = level;
307                                 set_bit(8 + i, &kit->input_events);
308                         }
309                 }
310         }
311         else if (kit->ifkit->inputs == 8) {
312                 for (i=0; i < 8; i++) {
313                         level = (buffer[1] >> i) & 1;
314                         if (kit->inputs[i] != level) {
315                                 kit->inputs[i] = level;
316                                 set_bit(i, &kit->input_events);
317                         }
318                 }
319         }
320
321         /* analog inputs */
322         if (kit->ifkit->sensors) {
323                 sensor = (buffer[0] & 1) ? 4 : 0;
324
325                 level = buffer[2] + (buffer[3] & 0x0f) * 256;
326                 if (level != kit->sensors[sensor]) {
327                         kit->sensors[sensor] = level;
328                         set_bit(sensor, &kit->sensor_events);
329                 }
330                 sensor++;
331                 level = buffer[4] + (buffer[3] & 0xf0) * 16;
332                 if (level != kit->sensors[sensor]) {
333                         kit->sensors[sensor] = level;
334                         set_bit(sensor, &kit->sensor_events);
335                 }
336                 sensor++;
337                 level = buffer[5] + (buffer[6] & 0x0f) * 256;
338                 if (level != kit->sensors[sensor]) {
339                         kit->sensors[sensor] = level;
340                         set_bit(sensor, &kit->sensor_events);
341                 }
342                 sensor++;
343                 level = buffer[7] + (buffer[6] & 0xf0) * 16;
344                 if (level != kit->sensors[sensor]) {
345                         kit->sensors[sensor] = level;
346                         set_bit(sensor, &kit->sensor_events);
347                 }
348         }
349
350         if (kit->input_events || kit->sensor_events)
351                 schedule_work(&kit->do_notify);
352
353 resubmit:
354         status = usb_submit_urb(urb, SLAB_ATOMIC);
355         if (status)
356                 err("can't resubmit intr, %s-%s/interfacekit0, status %d",
357                         kit->udev->bus->bus_name,
358                         kit->udev->devpath, status);
359 }
360
361 static void do_notify(void *data)
362 {
363         struct interfacekit *kit = data;
364         int i;
365         char sysfs_file[8];
366
367         for (i=0; i<kit->ifkit->inputs; i++) {
368                 if (test_and_clear_bit(i, &kit->input_events)) {
369                         sprintf(sysfs_file, "input%d", i + 1);
370                         sysfs_notify(&kit->dev->kobj, NULL, sysfs_file);
371                 }
372         }
373
374         for (i=0; i<kit->ifkit->sensors; i++) {
375                 if (test_and_clear_bit(i, &kit->sensor_events)) {
376                         sprintf(sysfs_file, "sensor%d", i + 1);
377                         sysfs_notify(&kit->dev->kobj, NULL, sysfs_file);
378                 }
379         }
380 }
381
382 #define show_set_output(value)          \
383 static ssize_t set_output##value(struct device *dev,                    \
384                                         struct device_attribute *attr,  \
385                                         const char *buf, size_t count)  \
386 {                                                                       \
387         struct interfacekit *kit = dev_get_drvdata(dev);                \
388         int enabled;                                                    \
389         int retval;                                                     \
390                                                                         \
391         if (sscanf(buf, "%d", &enabled) < 1)                            \
392                 return -EINVAL;                                         \
393                                                                         \
394         retval = change_outputs(kit, value - 1, enabled);               \
395                                                                         \
396         return retval ? retval : count;                                 \
397 }                                                                       \
398                                                                         \
399 static ssize_t show_output##value(struct device *dev,                   \
400                                         struct device_attribute *attr,  \
401                                         char *buf)                      \
402 {                                                                       \
403         struct interfacekit *kit = dev_get_drvdata(dev);                \
404                                                                         \
405         return sprintf(buf, "%d\n", !!test_bit(value - 1, &kit->outputs));\
406 }                                                                       \
407 static DEVICE_ATTR(output##value, S_IWUGO | S_IRUGO,                    \
408                 show_output##value, set_output##value);
409 show_set_output(1);
410 show_set_output(2);
411 show_set_output(3);
412 show_set_output(4);
413 show_set_output(5);
414 show_set_output(6);
415 show_set_output(7);
416 show_set_output(8);
417 show_set_output(9);
418 show_set_output(10);
419 show_set_output(11);
420 show_set_output(12);
421 show_set_output(13);
422 show_set_output(14);
423 show_set_output(15);
424 show_set_output(16);
425
426 #define show_input(value)       \
427 static ssize_t show_input##value(struct device *dev, struct device_attribute *attr, char *buf)  \
428 {                                                                       \
429         struct interfacekit *kit = dev_get_drvdata(dev);                \
430                                                                         \
431         return sprintf(buf, "%d\n", (int)kit->inputs[value - 1]);       \
432 }                                                                       \
433 static DEVICE_ATTR(input##value, S_IRUGO, show_input##value, NULL);
434
435 show_input(1);
436 show_input(2);
437 show_input(3);
438 show_input(4);
439 show_input(5);
440 show_input(6);
441 show_input(7);
442 show_input(8);
443 show_input(9);
444 show_input(10);
445 show_input(11);
446 show_input(12);
447 show_input(13);
448 show_input(14);
449 show_input(15);
450 show_input(16);
451
452 #define show_sensor(value)      \
453 static ssize_t show_sensor##value(struct device *dev,                   \
454                                         struct device_attribute *attr,  \
455                                         char *buf)                      \
456 {                                                                       \
457         struct interfacekit *kit = dev_get_drvdata(dev);                \
458                                                                         \
459         return sprintf(buf, "%d\n", (int)kit->sensors[value - 1]);      \
460 }                                                                       \
461 static DEVICE_ATTR(sensor##value, S_IRUGO, show_sensor##value, NULL);
462
463 show_sensor(1);
464 show_sensor(2);
465 show_sensor(3);
466 show_sensor(4);
467 show_sensor(5);
468 show_sensor(6);
469 show_sensor(7);
470 show_sensor(8);
471
472 static int interfacekit_probe(struct usb_interface *intf, const struct usb_device_id *id)
473 {
474         struct usb_device *dev = interface_to_usbdev(intf);
475         struct usb_host_interface *interface;
476         struct usb_endpoint_descriptor *endpoint;
477         struct interfacekit *kit;
478         struct driver_interfacekit *ifkit;
479         int pipe, maxp, rc = -ENOMEM;
480         int bit, value;
481
482         ifkit = (struct driver_interfacekit *)id->driver_info;
483         if (!ifkit)
484                 return -ENODEV;
485
486         interface = intf->cur_altsetting;
487         if (interface->desc.bNumEndpoints != 1)
488                 return -ENODEV;
489
490         endpoint = &interface->endpoint[0].desc;
491         if (!(endpoint->bEndpointAddress & 0x80)) 
492                 return -ENODEV;
493         /*
494          * bmAttributes
495          */
496         pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
497         maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
498         
499         kit = kzalloc(sizeof(*kit), GFP_KERNEL);
500         if (!kit)
501                 goto out;
502
503         kit->dev_no = -1;
504         kit->ifkit = ifkit;
505         kit->data = usb_buffer_alloc(dev, URB_INT_SIZE, SLAB_ATOMIC, &kit->data_dma);
506         if (!kit->data)
507                 goto out;
508
509         kit->irq = usb_alloc_urb(0, GFP_KERNEL);
510         if (!kit->irq)
511                 goto out;
512
513         kit->udev = usb_get_dev(dev);
514         kit->intf = intf;
515         INIT_WORK(&kit->do_notify, do_notify, kit);
516         usb_fill_int_urb(kit->irq, kit->udev, pipe, kit->data,
517                         maxp > URB_INT_SIZE ? URB_INT_SIZE : maxp,
518                         interfacekit_irq, kit, endpoint->bInterval);
519         kit->irq->transfer_dma = kit->data_dma;
520         kit->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
521
522         usb_set_intfdata(intf, kit);
523
524         do {
525                 bit = find_first_zero_bit(&device_no, sizeof(device_no));
526                 value = test_and_set_bit(bit, &device_no);
527         } while(value);
528         kit->dev_no = bit;
529
530         kit->dev = device_create(phidget_class, &kit->udev->dev, 0,
531                         "interfacekit%d", kit->dev_no);
532         if (IS_ERR(kit->dev)) {
533                 rc = PTR_ERR(kit->dev);
534                 kit->dev = NULL;
535                 goto out;
536         }
537         dev_set_drvdata(kit->dev, kit);
538
539         if (usb_submit_urb(kit->irq, GFP_KERNEL)) {
540                 rc = -EIO;
541                 goto out;
542         }
543
544         if (ifkit->outputs >= 4) {
545                 device_create_file(kit->dev, &dev_attr_output1);
546                 device_create_file(kit->dev, &dev_attr_output2);
547                 device_create_file(kit->dev, &dev_attr_output3);
548                 device_create_file(kit->dev, &dev_attr_output4);
549         }
550         if (ifkit->outputs >= 8) {
551                 device_create_file(kit->dev, &dev_attr_output5);
552                 device_create_file(kit->dev, &dev_attr_output6);
553                 device_create_file(kit->dev, &dev_attr_output7);
554                 device_create_file(kit->dev, &dev_attr_output8);
555         } 
556         if (ifkit->outputs == 16) {
557                 device_create_file(kit->dev, &dev_attr_output9);
558                 device_create_file(kit->dev, &dev_attr_output10);
559                 device_create_file(kit->dev, &dev_attr_output11);
560                 device_create_file(kit->dev, &dev_attr_output12);
561                 device_create_file(kit->dev, &dev_attr_output13);
562                 device_create_file(kit->dev, &dev_attr_output14);
563                 device_create_file(kit->dev, &dev_attr_output15);
564                 device_create_file(kit->dev, &dev_attr_output16);
565         }
566
567         if (ifkit->inputs >= 4) {
568                 device_create_file(kit->dev, &dev_attr_input1);
569                 device_create_file(kit->dev, &dev_attr_input2);
570                 device_create_file(kit->dev, &dev_attr_input3);
571                 device_create_file(kit->dev, &dev_attr_input4);
572         }
573         if (ifkit->inputs >= 8) {
574                 device_create_file(kit->dev, &dev_attr_input5);
575                 device_create_file(kit->dev, &dev_attr_input6);
576                 device_create_file(kit->dev, &dev_attr_input7);
577                 device_create_file(kit->dev, &dev_attr_input8);
578         }
579         if (ifkit->inputs == 16) {
580                 device_create_file(kit->dev, &dev_attr_input9);
581                 device_create_file(kit->dev, &dev_attr_input10);
582                 device_create_file(kit->dev, &dev_attr_input11);
583                 device_create_file(kit->dev, &dev_attr_input12);
584                 device_create_file(kit->dev, &dev_attr_input13);
585                 device_create_file(kit->dev, &dev_attr_input14);
586                 device_create_file(kit->dev, &dev_attr_input15);
587                 device_create_file(kit->dev, &dev_attr_input16);
588         }
589
590         if (ifkit->sensors >= 4) {
591                 device_create_file(kit->dev, &dev_attr_sensor1);
592                 device_create_file(kit->dev, &dev_attr_sensor2);
593                 device_create_file(kit->dev, &dev_attr_sensor3);
594                 device_create_file(kit->dev, &dev_attr_sensor4);
595         }
596         if (ifkit->sensors >= 7) {
597                 device_create_file(kit->dev, &dev_attr_sensor5);
598                 device_create_file(kit->dev, &dev_attr_sensor6);
599                 device_create_file(kit->dev, &dev_attr_sensor7);
600         }
601         if (ifkit->sensors == 8)
602                 device_create_file(kit->dev, &dev_attr_sensor8);
603
604         if (ifkit->has_lcd)
605                 device_create_file(kit->dev, &dev_attr_lcd);
606
607         dev_info(&intf->dev, "USB PhidgetInterfaceKit %d/%d/%d attached\n",
608                         ifkit->sensors, ifkit->inputs, ifkit->outputs);
609
610         return 0;
611
612 out:
613         if (kit) {
614                 if (kit->irq)
615                         usb_free_urb(kit->irq);
616                 if (kit->data)
617                         usb_buffer_free(dev, URB_INT_SIZE, kit->data, kit->data_dma);
618                 if (kit->dev)
619                         device_unregister(kit->dev);
620                 if (kit->dev_no >= 0)
621                         clear_bit(kit->dev_no, &device_no);
622
623                 kfree(kit);
624         }
625
626         return rc;
627 }
628
629 static void interfacekit_disconnect(struct usb_interface *interface)
630 {
631         struct interfacekit *kit;
632
633         kit = usb_get_intfdata(interface);
634         usb_set_intfdata(interface, NULL);
635         if (!kit)
636                 return;
637
638         usb_kill_urb(kit->irq);
639         usb_free_urb(kit->irq);
640         usb_buffer_free(kit->udev, URB_INT_SIZE, kit->data, kit->data_dma);
641
642         cancel_delayed_work(&kit->do_notify);
643
644         if (kit->ifkit->outputs >= 4) {
645                 device_remove_file(kit->dev, &dev_attr_output1);
646                 device_remove_file(kit->dev, &dev_attr_output2);
647                 device_remove_file(kit->dev, &dev_attr_output3);
648                 device_remove_file(kit->dev, &dev_attr_output4);
649         }
650         if (kit->ifkit->outputs >= 8) {
651                 device_remove_file(kit->dev, &dev_attr_output5);
652                 device_remove_file(kit->dev, &dev_attr_output6);
653                 device_remove_file(kit->dev, &dev_attr_output7);
654                 device_remove_file(kit->dev, &dev_attr_output8);
655         }
656         if (kit->ifkit->outputs == 16) {
657                 device_remove_file(kit->dev, &dev_attr_output9);
658                 device_remove_file(kit->dev, &dev_attr_output10);
659                 device_remove_file(kit->dev, &dev_attr_output11);
660                 device_remove_file(kit->dev, &dev_attr_output12);
661                 device_remove_file(kit->dev, &dev_attr_output13);
662                 device_remove_file(kit->dev, &dev_attr_output14);
663                 device_remove_file(kit->dev, &dev_attr_output15);
664                 device_remove_file(kit->dev, &dev_attr_output16);
665         }
666
667         if (kit->ifkit->inputs >= 4) {
668                 device_remove_file(kit->dev, &dev_attr_input1);
669                 device_remove_file(kit->dev, &dev_attr_input2);
670                 device_remove_file(kit->dev, &dev_attr_input3);
671                 device_remove_file(kit->dev, &dev_attr_input4);
672         }
673         if (kit->ifkit->inputs >= 8) {
674                 device_remove_file(kit->dev, &dev_attr_input5);
675                 device_remove_file(kit->dev, &dev_attr_input6);
676                 device_remove_file(kit->dev, &dev_attr_input7);
677                 device_remove_file(kit->dev, &dev_attr_input8);
678         }
679         if (kit->ifkit->inputs == 16) {
680                 device_remove_file(kit->dev, &dev_attr_input9);
681                 device_remove_file(kit->dev, &dev_attr_input10);
682                 device_remove_file(kit->dev, &dev_attr_input11);
683                 device_remove_file(kit->dev, &dev_attr_input12);
684                 device_remove_file(kit->dev, &dev_attr_input13);
685                 device_remove_file(kit->dev, &dev_attr_input14);
686                 device_remove_file(kit->dev, &dev_attr_input15);
687                 device_remove_file(kit->dev, &dev_attr_input16);
688         }
689
690         if (kit->ifkit->sensors >= 4) {
691                 device_remove_file(kit->dev, &dev_attr_sensor1);
692                 device_remove_file(kit->dev, &dev_attr_sensor2);
693                 device_remove_file(kit->dev, &dev_attr_sensor3);
694                 device_remove_file(kit->dev, &dev_attr_sensor4);
695         }
696         if (kit->ifkit->sensors >= 7) {
697                 device_remove_file(kit->dev, &dev_attr_sensor5);
698                 device_remove_file(kit->dev, &dev_attr_sensor6);
699                 device_remove_file(kit->dev, &dev_attr_sensor7);
700         }
701         if (kit->ifkit->sensors == 8)
702                 device_remove_file(kit->dev, &dev_attr_sensor8);
703
704         if (kit->ifkit->has_lcd)
705                 device_remove_file(kit->dev, &dev_attr_lcd);
706
707         device_unregister(kit->dev);
708
709         dev_info(&interface->dev, "USB PhidgetInterfaceKit %d/%d/%d detached\n",
710                 kit->ifkit->sensors, kit->ifkit->inputs, kit->ifkit->outputs);
711
712         usb_put_dev(kit->udev);
713         clear_bit(kit->dev_no, &device_no);
714
715         kfree(kit);
716 }
717
718 static struct usb_driver interfacekit_driver = {
719         .name = "phidgetkit",
720         .probe = interfacekit_probe,
721         .disconnect = interfacekit_disconnect,
722         .id_table = id_table
723 };
724
725 static int __init interfacekit_init(void)
726 {
727         int retval = 0;
728
729         retval = usb_register(&interfacekit_driver);
730         if (retval)
731                 err("usb_register failed. Error number %d", retval);
732
733         return retval;
734 }
735
736 static void __exit interfacekit_exit(void)
737 {
738         usb_deregister(&interfacekit_driver);
739 }
740
741 module_init(interfacekit_init);
742 module_exit(interfacekit_exit);
743
744 MODULE_AUTHOR(DRIVER_AUTHOR);
745 MODULE_DESCRIPTION(DRIVER_DESC);
746 MODULE_LICENSE("GPL");