Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 | /*
* USB PhidgetInterfaceKit driver 1.0
*
* Copyright (C) 2004 Sean Young <sean@mess.org>
* Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This is a driver for the USB PhidgetInterfaceKit.
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/usb.h>
#define DRIVER_AUTHOR "Sean Young <sean@mess.org>"
#define DRIVER_DESC "USB PhidgetInterfaceKit Driver"
#define USB_VENDOR_ID_GLAB 0x06c2
#define USB_DEVICE_ID_INTERFACEKIT004 0x0040
#define USB_DEVICE_ID_INTERFACEKIT888 0x0045
#define USB_DEVICE_ID_INTERFACEKIT047 0x0051
#define USB_DEVICE_ID_INTERFACEKIT088 0x0053
#define USB_VENDOR_ID_WISEGROUP 0x0925
#define USB_DEVICE_ID_INTERFACEKIT884 0x8201
#define MAX_INTERFACES 8
struct driver_interfacekit {
int sensors;
int inputs;
int outputs;
int has_lcd;
};
#define ifkit(_sensors, _inputs, _outputs, _lcd) \
static struct driver_interfacekit ph_##_sensors##_inputs##_outputs = { \
.sensors = _sensors, \
.inputs = _inputs, \
.outputs = _outputs, \
.has_lcd = _lcd, \
};
ifkit(0, 0, 4, 0);
ifkit(8, 8, 8, 0);
ifkit(0, 4, 7, 1);
ifkit(8, 8, 4, 0);
ifkit(0, 8, 8, 1);
struct phidget_interfacekit {
struct usb_device *udev;
struct usb_interface *intf;
struct driver_interfacekit *ifkit;
int outputs[MAX_INTERFACES];
int inputs[MAX_INTERFACES];
int sensors[MAX_INTERFACES];
u8 lcd_files_on;
struct urb *irq;
unsigned char *data;
dma_addr_t data_dma;
};
static struct usb_device_id id_table[] = {
{USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_INTERFACEKIT004),
.driver_info = (kernel_ulong_t)&ph_004},
{USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_INTERFACEKIT888),
.driver_info = (kernel_ulong_t)&ph_888},
{USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_INTERFACEKIT047),
.driver_info = (kernel_ulong_t)&ph_047},
{USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_INTERFACEKIT088),
.driver_info = (kernel_ulong_t)&ph_088},
{USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_INTERFACEKIT884),
.driver_info = (kernel_ulong_t)&ph_884},
{}
};
MODULE_DEVICE_TABLE(usb, id_table);
static int change_outputs(struct phidget_interfacekit *kit, int output_num, int enable)
{
unsigned char *buffer;
int retval;
int n;
buffer = kmalloc(4, GFP_KERNEL);
if (!buffer) {
dev_err(&kit->udev->dev, "%s - out of memory\n",
__FUNCTION__);
return -ENOMEM;
}
kit->outputs[output_num] = enable;
memset(buffer, 0, 4);
for (n=0; n<8; n++) {
if (kit->outputs[n]) {
buffer[0] |= 1 << n;
}
}
dev_dbg(&kit->udev->dev, "sending data: %02x\n", buffer[0]);
retval = usb_control_msg(kit->udev,
usb_sndctrlpipe(kit->udev, 0),
0x09, 0x21, 0x0200, 0x0000, buffer, 4, 2000);
if (retval != 4)
dev_err(&kit->udev->dev, "usb_control_msg returned %d\n",
retval);
kfree(buffer);
return retval < 0 ? retval : 0;
}
static int change_string(struct phidget_interfacekit *kit, const char *display, unsigned char row)
{
unsigned char *buffer;
unsigned char *form_buffer;
int retval = -ENOMEM;
int i,j, len, buf_ptr;
buffer = kmalloc(8, GFP_KERNEL);
form_buffer = kmalloc(30, GFP_KERNEL);
if ((!buffer) || (!form_buffer)) {
dev_err(&kit->udev->dev, "%s - out of memory\n", __FUNCTION__);
goto exit;
}
len = strlen(display);
if (len > 20)
len = 20;
dev_dbg(&kit->udev->dev, "Setting LCD line %d to %s\n", row, display);
form_buffer[0] = row * 0x40 + 0x80;
form_buffer[1] = 0x02;
buf_ptr = 2;
for (i = 0; i<len; i++)
form_buffer[buf_ptr++] = display[i];
for (i = 0; i < (20 - len); i++)
form_buffer[buf_ptr++] = 0x20;
form_buffer[buf_ptr++] = 0x01;
form_buffer[buf_ptr++] = row * 0x40 + 0x80 + strlen(display);
for (i = 0; i < buf_ptr; i += 7) {
if ((buf_ptr - i) > 7)
len = 7;
else
len = (buf_ptr - i);
for (j = 0; j < len; j++)
buffer[j] = form_buffer[i + j];
buffer[7] = len;
retval = usb_control_msg(kit->udev,
usb_sndctrlpipe(kit->udev, 0),
0x09, 0x21, 0x0200, 0x0000, buffer, 8, 2000);
if (retval < 0)
goto exit;
}
retval = 0;
exit:
kfree(buffer);
kfree(form_buffer);
return retval;
}
#define set_lcd_line(number) \
static ssize_t lcd_line_##number(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
{ \
struct usb_interface *intf = to_usb_interface(dev); \
struct phidget_interfacekit *kit = usb_get_intfdata(intf); \
change_string(kit, buf, number - 1); \
return count; \
} \
static DEVICE_ATTR(lcd_line_##number, S_IWUGO, NULL, lcd_line_##number);
set_lcd_line(1);
set_lcd_line(2);
static ssize_t set_backlight(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct usb_interface *intf = to_usb_interface(dev);
struct phidget_interfacekit *kit = usb_get_intfdata(intf);
int enabled;
unsigned char *buffer;
int retval = -ENOMEM;
buffer = kmalloc(8, GFP_KERNEL);
if (!buffer) {
dev_err(&kit->udev->dev, "%s - out of memory\n", __FUNCTION__);
goto exit;
}
if (sscanf(buf, "%d", &enabled) < 1) {
retval = -EINVAL;
goto exit;
}
memset(buffer, 0x00, 8);
if (enabled)
buffer[0] = 0x01;
buffer[7] = 0x11;
dev_dbg(&kit->udev->dev, "Setting backlight to %s\n", enabled ? "on" : "off");
retval = usb_control_msg(kit->udev,
usb_sndctrlpipe(kit->udev, 0),
0x09, 0x21, 0x0200, 0x0000, buffer, 8, 2000);
if (retval < 0)
goto exit;
retval = count;
exit:
kfree(buffer);
return retval;
}
static DEVICE_ATTR(backlight, S_IWUGO, NULL, set_backlight);
static void remove_lcd_files(struct phidget_interfacekit *kit)
{
if (kit->lcd_files_on) {
dev_dbg(&kit->udev->dev, "Removing lcd files\n");
device_remove_file(&kit->intf->dev, &dev_attr_lcd_line_1);
device_remove_file(&kit->intf->dev, &dev_attr_lcd_line_2);
device_remove_file(&kit->intf->dev, &dev_attr_backlight);
}
}
static ssize_t enable_lcd_files(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct usb_interface *intf = to_usb_interface(dev);
struct phidget_interfacekit *kit = usb_get_intfdata(intf);
int enable;
if (kit->ifkit->has_lcd == 0)
return -ENODEV;
if (sscanf(buf, "%d", &enable) < 1)
return -EINVAL;
if (enable) {
if (!kit->lcd_files_on) {
dev_dbg(&kit->udev->dev, "Adding lcd files\n");
device_create_file(&kit->intf->dev, &dev_attr_lcd_line_1);
device_create_file(&kit->intf->dev, &dev_attr_lcd_line_2);
device_create_file(&kit->intf->dev, &dev_attr_backlight);
kit->lcd_files_on = 1;
}
} else {
if (kit->lcd_files_on) {
remove_lcd_files(kit);
kit->lcd_files_on = 0;
}
}
return count;
}
static DEVICE_ATTR(lcd, S_IWUGO, NULL, enable_lcd_files);
static void interfacekit_irq(struct urb *urb, struct pt_regs *regs)
{
struct phidget_interfacekit *kit = urb->context;
unsigned char *buffer = kit->data;
int status;
int n;
switch (urb->status) {
case 0: /* success */
break;
case -ECONNRESET: /* unlink */
case -ENOENT:
case -ESHUTDOWN:
return;
/* -EPIPE: should clear the halt */
default: /* error */
goto resubmit;
}
for (n=0; n<8; n++) {
kit->inputs[n] = buffer[1] & (1 << n) ? 1 : 0;
}
if (buffer[0] & 1) {
kit->sensors[4] = buffer[2] + (buffer[3] & 0x0f) * 256;
kit->sensors[5] = buffer[4] + (buffer[3] & 0xf0) * 16;
kit->sensors[6] = buffer[5] + (buffer[6] & 0x0f) * 256;
kit->sensors[7] = buffer[7] + (buffer[6] & 0xf0) * 16;
} else {
kit->sensors[0] = buffer[2] + (buffer[3] & 0x0f) * 256;
kit->sensors[1] = buffer[4] + (buffer[3] & 0xf0) * 16;
kit->sensors[2] = buffer[5] + (buffer[6] & 0x0f) * 256;
kit->sensors[3] = buffer[7] + (buffer[6] & 0xf0) * 16;
}
resubmit:
status = usb_submit_urb(urb, SLAB_ATOMIC);
if (status)
err("can't resubmit intr, %s-%s/interfacekit0, status %d",
kit->udev->bus->bus_name,
kit->udev->devpath, status);
}
#define show_set_output(value) \
static ssize_t set_output##value(struct device *dev, struct device_attribute *attr, const char *buf, \
size_t count) \
{ \
struct usb_interface *intf = to_usb_interface(dev); \
struct phidget_interfacekit *kit = usb_get_intfdata(intf); \
int enabled; \
int retval; \
\
if (sscanf(buf, "%d", &enabled) < 1) { \
return -EINVAL; \
} \
\
retval = change_outputs(kit, value - 1, enabled ? 1 : 0); \
\
return retval ? retval : count; \
} \
\
static ssize_t show_output##value(struct device *dev, struct device_attribute *attr, char *buf) \
{ \
struct usb_interface *intf = to_usb_interface(dev); \
struct phidget_interfacekit *kit = usb_get_intfdata(intf); \
\
return sprintf(buf, "%d\n", kit->outputs[value - 1]); \
} \
static DEVICE_ATTR(output##value, S_IWUGO | S_IRUGO, \
show_output##value, set_output##value);
show_set_output(1);
show_set_output(2);
show_set_output(3);
show_set_output(4);
show_set_output(5);
show_set_output(6);
show_set_output(7);
show_set_output(8); /* should be MAX_INTERFACES - 1 */
#define show_input(value) \
static ssize_t show_input##value(struct device *dev, struct device_attribute *attr, char *buf) \
{ \
struct usb_interface *intf = to_usb_interface(dev); \
struct phidget_interfacekit *kit = usb_get_intfdata(intf); \
\
return sprintf(buf, "%d\n", kit->inputs[value - 1]); \
} \
static DEVICE_ATTR(input##value, S_IRUGO, show_input##value, NULL);
show_input(1);
show_input(2);
show_input(3);
show_input(4);
show_input(5);
show_input(6);
show_input(7);
show_input(8); /* should be MAX_INTERFACES - 1 */
#define show_sensor(value) \
static ssize_t show_sensor##value(struct device *dev, struct device_attribute *attr, char *buf) \
{ \
struct usb_interface *intf = to_usb_interface(dev); \
struct phidget_interfacekit *kit = usb_get_intfdata(intf); \
\
return sprintf(buf, "%d\n", kit->sensors[value - 1]); \
} \
static DEVICE_ATTR(sensor##value, S_IRUGO, show_sensor##value, NULL);
show_sensor(1);
show_sensor(2);
show_sensor(3);
show_sensor(4);
show_sensor(5);
show_sensor(6);
show_sensor(7);
show_sensor(8); /* should be MAX_INTERFACES - 1 */
static int interfacekit_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
struct usb_device *dev = interface_to_usbdev(intf);
struct usb_host_interface *interface;
struct usb_endpoint_descriptor *endpoint;
struct phidget_interfacekit *kit;
struct driver_interfacekit *ifkit;
int pipe, maxp;
ifkit = (struct driver_interfacekit *)id->driver_info;
if (!ifkit)
return -ENODEV;
interface = intf->cur_altsetting;
if (interface->desc.bNumEndpoints != 1)
return -ENODEV;
endpoint = &interface->endpoint[0].desc;
if (!(endpoint->bEndpointAddress & 0x80))
return -ENODEV;
/*
* bmAttributes
*/
pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
kit = kmalloc(sizeof(*kit), GFP_KERNEL);
if (kit == NULL) {
dev_err(&intf->dev, "%s - out of memory\n", __FUNCTION__);
return -ENOMEM;
}
memset(kit, 0, sizeof(*kit));
kit->ifkit = ifkit;
kit->data = usb_buffer_alloc(dev, 8, SLAB_ATOMIC, &kit->data_dma);
if (!kit->data) {
kfree(kit);
return -ENOMEM;
}
kit->irq = usb_alloc_urb(0, GFP_KERNEL);
if (!kit->irq) {
usb_buffer_free(dev, 8, kit->data, kit->data_dma);
kfree(kit);
return -ENOMEM;
}
kit->udev = usb_get_dev(dev);
kit->intf = intf;
usb_fill_int_urb(kit->irq, kit->udev, pipe, kit->data,
(maxp > 8 ? 8 : maxp),
interfacekit_irq, kit, endpoint->bInterval);
kit->irq->transfer_dma = kit->data_dma;
kit->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
usb_set_intfdata(intf, kit);
if (usb_submit_urb(kit->irq, GFP_KERNEL)) {
return -EIO;
}
if (ifkit->outputs >= 4) {
device_create_file(&intf->dev, &dev_attr_output1);
device_create_file(&intf->dev, &dev_attr_output2);
device_create_file(&intf->dev, &dev_attr_output3);
device_create_file(&intf->dev, &dev_attr_output4);
}
if (ifkit->outputs == 8) {
device_create_file(&intf->dev, &dev_attr_output5);
device_create_file(&intf->dev, &dev_attr_output6);
device_create_file(&intf->dev, &dev_attr_output7);
device_create_file(&intf->dev, &dev_attr_output8);
}
if (ifkit->inputs >= 4) {
device_create_file(&intf->dev, &dev_attr_input1);
device_create_file(&intf->dev, &dev_attr_input2);
device_create_file(&intf->dev, &dev_attr_input3);
device_create_file(&intf->dev, &dev_attr_input4);
}
if (ifkit->inputs == 8) {
device_create_file(&intf->dev, &dev_attr_input5);
device_create_file(&intf->dev, &dev_attr_input6);
device_create_file(&intf->dev, &dev_attr_input7);
device_create_file(&intf->dev, &dev_attr_input8);
}
if (ifkit->sensors >= 4) {
device_create_file(&intf->dev, &dev_attr_sensor1);
device_create_file(&intf->dev, &dev_attr_sensor2);
device_create_file(&intf->dev, &dev_attr_sensor3);
device_create_file(&intf->dev, &dev_attr_sensor4);
}
if (ifkit->sensors >= 7) {
device_create_file(&intf->dev, &dev_attr_sensor5);
device_create_file(&intf->dev, &dev_attr_sensor6);
device_create_file(&intf->dev, &dev_attr_sensor7);
}
if (ifkit->sensors == 8) {
device_create_file(&intf->dev, &dev_attr_sensor8);
}
if (ifkit->has_lcd)
device_create_file(&intf->dev, &dev_attr_lcd);
dev_info(&intf->dev, "USB PhidgetInterfaceKit %d/%d/%d attached\n",
ifkit->sensors, ifkit->inputs, ifkit->outputs);
return 0;
}
static void interfacekit_disconnect(struct usb_interface *interface)
{
struct phidget_interfacekit *kit;
kit = usb_get_intfdata(interface);
usb_set_intfdata(interface, NULL);
if (!kit)
return;
if (kit->ifkit->outputs >= 4) {
device_remove_file(&interface->dev, &dev_attr_output1);
device_remove_file(&interface->dev, &dev_attr_output2);
device_remove_file(&interface->dev, &dev_attr_output3);
device_remove_file(&interface->dev, &dev_attr_output4);
}
if (kit->ifkit->outputs == 8) {
device_remove_file(&interface->dev, &dev_attr_output5);
device_remove_file(&interface->dev, &dev_attr_output6);
device_remove_file(&interface->dev, &dev_attr_output7);
device_remove_file(&interface->dev, &dev_attr_output8);
}
if (kit->ifkit->inputs >= 4) {
device_remove_file(&interface->dev, &dev_attr_input1);
device_remove_file(&interface->dev, &dev_attr_input2);
device_remove_file(&interface->dev, &dev_attr_input3);
device_remove_file(&interface->dev, &dev_attr_input4);
}
if (kit->ifkit->inputs == 8) {
device_remove_file(&interface->dev, &dev_attr_input5);
device_remove_file(&interface->dev, &dev_attr_input6);
device_remove_file(&interface->dev, &dev_attr_input7);
device_remove_file(&interface->dev, &dev_attr_input8);
}
if (kit->ifkit->sensors >= 4) {
device_remove_file(&interface->dev, &dev_attr_sensor1);
device_remove_file(&interface->dev, &dev_attr_sensor2);
device_remove_file(&interface->dev, &dev_attr_sensor3);
device_remove_file(&interface->dev, &dev_attr_sensor4);
}
if (kit->ifkit->sensors >= 7) {
device_remove_file(&interface->dev, &dev_attr_sensor5);
device_remove_file(&interface->dev, &dev_attr_sensor6);
device_remove_file(&interface->dev, &dev_attr_sensor7);
}
if (kit->ifkit->sensors == 8) {
device_remove_file(&interface->dev, &dev_attr_sensor8);
}
if (kit->ifkit->has_lcd)
device_remove_file(&interface->dev, &dev_attr_lcd);
dev_info(&interface->dev, "USB PhidgetInterfaceKit %d/%d/%d detached\n",
kit->ifkit->sensors, kit->ifkit->inputs, kit->ifkit->outputs);
usb_kill_urb(kit->irq);
usb_free_urb(kit->irq);
usb_buffer_free(kit->udev, 8, kit->data, kit->data_dma);
usb_put_dev(kit->udev);
kfree(kit);
}
static struct usb_driver interfacekit_driver = {
.name = "phidgetkit",
.probe = interfacekit_probe,
.disconnect = interfacekit_disconnect,
.id_table = id_table
};
static int __init interfacekit_init(void)
{
int retval = 0;
retval = usb_register(&interfacekit_driver);
if (retval)
err("usb_register failed. Error number %d", retval);
return retval;
}
static void __exit interfacekit_exit(void)
{
usb_deregister(&interfacekit_driver);
}
module_init(interfacekit_init);
module_exit(interfacekit_exit);
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
|