drivers/input/tablet/hanwang.c

   1 /*
   2  *  USB Hanwang tablet support
   3  *
   4  *  Copyright (c) 2010 Xing Wei <weixing@hanwang.com.cn>
   5  *
   6  */
   7
   8 /*
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  22  *
  23  */
  24
  25 #include <linux/types.h>
  26 #include <linux/kernel.h>
  27 #include <linux/slab.h>
  28 #include <linux/module.h>
  29 #include <linux/usb/input.h>
  30
  31 #define DRIVER_AUTHOR   "Xing Wei <weixing@hanwang.com.cn>"
  32 #define DRIVER_DESC     "USB Hanwang tablet driver"
  33 #define DRIVER_LICENSE  "GPL"
  34
  35 MODULE_AUTHOR(DRIVER_AUTHOR);
  36 MODULE_DESCRIPTION(DRIVER_DESC);
  37 MODULE_LICENSE(DRIVER_LICENSE);
  38
  39 #define USB_VENDOR_ID_HANWANG           0x0b57
  40 #define HANWANG_TABLET_INT_CLASS        0x0003
  41 #define HANWANG_TABLET_INT_SUB_CLASS    0x0001
  42 #define HANWANG_TABLET_INT_PROTOCOL     0x0002
  43
  44 #define ART_MASTER_PKGLEN_MAX   10
  45
  46 /* device IDs */
  47 #define STYLUS_DEVICE_ID        0x02
  48 #define TOUCH_DEVICE_ID         0x03
  49 #define CURSOR_DEVICE_ID        0x06
  50 #define ERASER_DEVICE_ID        0x0A
  51 #define PAD_DEVICE_ID           0x0F
  52
  53 /* match vendor and interface info  */
  54 #define HANWANG_TABLET_DEVICE(vend, cl, sc, pr) \
  55         .match_flags = USB_DEVICE_ID_MATCH_VENDOR \
  56                 | USB_DEVICE_ID_MATCH_INT_INFO, \
  57         .idVendor = (vend), \
  58         .bInterfaceClass = (cl), \
  59         .bInterfaceSubClass = (sc), \
  60         .bInterfaceProtocol = (pr)
  61
  62 enum hanwang_tablet_type {
  63         HANWANG_ART_MASTER_III,
  64         HANWANG_ART_MASTER_HD,
  65         HANWANG_ART_MASTER_II,
  66 };
  67
  68 struct hanwang {
  69         unsigned char *data;
  70         dma_addr_t data_dma;
  71         struct input_dev *dev;
  72         struct usb_device *usbdev;
  73         struct urb *irq;
  74         const struct hanwang_features *features;
  75         unsigned int current_tool;
  76         unsigned int current_id;
  77         char name[64];
  78         char phys[32];
  79 };
  80
  81 struct hanwang_features {
  82         unsigned short pid;
  83         char *name;
  84         enum hanwang_tablet_type type;
  85         int pkg_len;
  86         int max_x;
  87         int max_y;
  88         int max_tilt_x;
  89         int max_tilt_y;
  90         int max_pressure;
  91 };
  92
  93 static const struct hanwang_features features_array[] = {
  94         { 0x8528, "Hanwang Art Master III 0906", HANWANG_ART_MASTER_III,
  95           ART_MASTER_PKGLEN_MAX, 0x5757, 0x3692, 0x3f, 0x7f, 2048 },
  96         { 0x8529, "Hanwang Art Master III 0604", HANWANG_ART_MASTER_III,
  97           ART_MASTER_PKGLEN_MAX, 0x3d84, 0x2672, 0x3f, 0x7f, 2048 },
  98         { 0x852a, "Hanwang Art Master III 1308", HANWANG_ART_MASTER_III,
  99           ART_MASTER_PKGLEN_MAX, 0x7f00, 0x4f60, 0x3f, 0x7f, 2048 },
 100         { 0x8401, "Hanwang Art Master HD 5012", HANWANG_ART_MASTER_HD,
 101           ART_MASTER_PKGLEN_MAX, 0x678e, 0x4150, 0x3f, 0x7f, 1024 },
 102         { 0x8503, "Hanwang Art Master II", HANWANG_ART_MASTER_II,
 103           ART_MASTER_PKGLEN_MAX, 0x27de, 0x1cfe, 0x3f, 0x7f, 1024 },
 104 };
 105
 106 static const int hw_eventtypes[] = {
 107         EV_KEY, EV_ABS, EV_MSC,
 108 };
 109
 110 static const int hw_absevents[] = {
 111         ABS_X, ABS_Y, ABS_TILT_X, ABS_TILT_Y, ABS_WHEEL,
 112         ABS_RX, ABS_RY, ABS_PRESSURE, ABS_MISC,
 113 };
 114
 115 static const int hw_btnevents[] = {
 116         BTN_STYLUS, BTN_STYLUS2, BTN_TOOL_PEN, BTN_TOOL_RUBBER,
 117         BTN_TOOL_MOUSE, BTN_TOOL_FINGER,
 118         BTN_0, BTN_1, BTN_2, BTN_3, BTN_4, BTN_5, BTN_6, BTN_7, BTN_8,
 119 };
 120
 121 static const int hw_mscevents[] = {
 122         MSC_SERIAL,
 123 };
 124
 125 static void hanwang_parse_packet(struct hanwang *hanwang)
 126 {
 127         unsigned char *data = hanwang->data;
 128         struct input_dev *input_dev = hanwang->dev;
 129         struct usb_device *dev = hanwang->usbdev;
 130         enum hanwang_tablet_type type = hanwang->features->type;
 131         int i;
 132         u16 p;
 133
 134         if (type == HANWANG_ART_MASTER_II) {
 135                 hanwang->current_tool = BTN_TOOL_PEN;
 136                 hanwang->current_id = STYLUS_DEVICE_ID;
 137         }
 138
 139         switch (data[0]) {
 140         case 0x02:      /* data packet */
 141                 switch (data[1]) {
 142                 case 0x80:      /* tool prox out */
 143                         if (type != HANWANG_ART_MASTER_II) {
 144                                 hanwang->current_id = 0;
 145                                 input_report_key(input_dev,
 146                                                  hanwang->current_tool, 0);
 147                         }
 148                         break;
 149
 150                 case 0x00:      /* artmaster ii pen leave */
 151                         if (type == HANWANG_ART_MASTER_II) {
 152                                 hanwang->current_id = 0;
 153                                 input_report_key(input_dev,
 154                                                  hanwang->current_tool, 0);
 155                         }
 156                         break;
 157
 158                 case 0xc2:      /* first time tool prox in */
 159                         switch (data[3] & 0xf0) {
 160                         case 0x20:      /* art_master III */
 161                         case 0x30:      /* art_master_HD */
 162                                 hanwang->current_id = STYLUS_DEVICE_ID;
 163                                 hanwang->current_tool = BTN_TOOL_PEN;
 164                                 input_report_key(input_dev, BTN_TOOL_PEN, 1);
 165                                 break;
 166                         case 0xa0:      /* art_master III */
 167                         case 0xb0:      /* art_master_HD */
 168                                 hanwang->current_id = ERASER_DEVICE_ID;
 169                                 hanwang->current_tool = BTN_TOOL_RUBBER;
 170                                 input_report_key(input_dev, BTN_TOOL_RUBBER, 1);
 171                                 break;
 172                         default:
 173                                 hanwang->current_id = 0;
 174                                 dev_dbg(&dev->dev,
 175                                         "unknown tablet tool %02x\n", data[0]);
 176                                 break;
 177                         }
 178                         break;
 179
 180                 default:        /* tool data packet */
 181                         switch (type) {
 182                         case HANWANG_ART_MASTER_III:
 183                                 p = (data[6] << 3) |
 184                                     ((data[7] & 0xc0) >> 5) |
 185                                     (data[1] & 0x01);
 186                                 break;
 187
 188                         case HANWANG_ART_MASTER_HD:
 189                         case HANWANG_ART_MASTER_II:
 190                                 p = (data[7] >> 6) | (data[6] << 2);
 191                                 break;
 192
 193                         default:
 194                                 p = 0;
 195                                 break;
 196                         }
 197
 198                         input_report_abs(input_dev, ABS_X,
 199                                          be16_to_cpup((__be16 *)&data[2]));
 200                         input_report_abs(input_dev, ABS_Y,
 201                                          be16_to_cpup((__be16 *)&data[4]));
 202                         input_report_abs(input_dev, ABS_PRESSURE, p);
 203                         input_report_abs(input_dev, ABS_TILT_X, data[7] & 0x3f);
 204                         input_report_abs(input_dev, ABS_TILT_Y, data[8] & 0x7f);
 205                         input_report_key(input_dev, BTN_STYLUS, data[1] & 0x02);
 206
 207                         if (type != HANWANG_ART_MASTER_II)
 208                                 input_report_key(input_dev, BTN_STYLUS2,
 209                                                  data[1] & 0x04);
 210                         else
 211                                 input_report_key(input_dev, BTN_TOOL_PEN, 1);
 212
 213                         break;
 214                 }
 215
 216                 input_report_abs(input_dev, ABS_MISC, hanwang->current_id);
 217                 input_event(input_dev, EV_MSC, MSC_SERIAL,
 218                                 hanwang->features->pid);
 219                 break;
 220
 221         case 0x0c:
 222                 /* roll wheel */
 223                 hanwang->current_id = PAD_DEVICE_ID;
 224
 225                 switch (type) {
 226                 case HANWANG_ART_MASTER_III:
 227                         input_report_key(input_dev, BTN_TOOL_FINGER,
 228                                          data[1] || data[2] || data[3]);
 229                         input_report_abs(input_dev, ABS_WHEEL, data[1]);
 230                         input_report_key(input_dev, BTN_0, data[2]);
 231                         for (i = 0; i < 8; i++)
 232                                 input_report_key(input_dev,
 233                                          BTN_1 + i, data[3] & (1 << i));
 234                         break;
 235
 236                 case HANWANG_ART_MASTER_HD:
 237                         input_report_key(input_dev, BTN_TOOL_FINGER, data[1] ||
 238                                         data[2] || data[3] || data[4] ||
 239                                         data[5] || data[6]);
 240                         input_report_abs(input_dev, ABS_RX,
 241                                         ((data[1] & 0x1f) << 8) | data[2]);
 242                         input_report_abs(input_dev, ABS_RY,
 243                                         ((data[3] & 0x1f) << 8) | data[4]);
 244                         input_report_key(input_dev, BTN_0, data[5] & 0x01);
 245                         for (i = 0; i < 4; i++) {
 246                                 input_report_key(input_dev,
 247                                          BTN_1 + i, data[5] & (1 << i));
 248                                 input_report_key(input_dev,
 249                                          BTN_5 + i, data[6] & (1 << i));
 250                         }
 251                         break;
 252
 253                 case HANWANG_ART_MASTER_II:
 254                         dev_dbg(&dev->dev, "error packet  %02x\n", data[0]);
 255                         return;
 256                 }
 257
 258                 input_report_abs(input_dev, ABS_MISC, hanwang->current_id);
 259                 input_event(input_dev, EV_MSC, MSC_SERIAL, 0xffffffff);
 260                 break;
 261
 262         default:
 263                 dev_dbg(&dev->dev, "error packet  %02x\n", data[0]);
 264                 break;
 265         }
 266
 267         input_sync(input_dev);
 268 }
 269
 270 static void hanwang_irq(struct urb *urb)
 271 {
 272         struct hanwang *hanwang = urb->context;
 273         struct usb_device *dev = hanwang->usbdev;
 274         int retval;
 275
 276         switch (urb->status) {
 277         case 0:
 278                 /* success */;
 279                 hanwang_parse_packet(hanwang);
 280                 break;
 281         case -ECONNRESET:
 282         case -ENOENT:
 283         case -ESHUTDOWN:
 284                 /* this urb is terminated, clean up */
 285                 dev_err(&dev->dev, "%s - urb shutting down with status: %d",
 286                         __func__, urb->status);
 287                 return;
 288         default:
 289                 dev_err(&dev->dev, "%s - nonzero urb status received: %d",
 290                         __func__, urb->status);
 291                 break;
 292         }
 293
 294         retval = usb_submit_urb(urb, GFP_ATOMIC);
 295         if (retval)
 296                 dev_err(&dev->dev, "%s - usb_submit_urb failed with result %d",
 297                         __func__, retval);
 298 }
 299
 300 static int hanwang_open(struct input_dev *dev)
 301 {
 302         struct hanwang *hanwang = input_get_drvdata(dev);
 303
 304         hanwang->irq->dev = hanwang->usbdev;
 305         if (usb_submit_urb(hanwang->irq, GFP_KERNEL))
 306                 return -EIO;
 307
 308         return 0;
 309 }
 310
 311 static void hanwang_close(struct input_dev *dev)
 312 {
 313         struct hanwang *hanwang = input_get_drvdata(dev);
 314
 315         usb_kill_urb(hanwang->irq);
 316 }
 317
 318 static bool get_features(struct usb_device *dev, struct hanwang *hanwang)
 319 {
 320         int i;
 321
 322         for (i = 0; i < ARRAY_SIZE(features_array); i++) {
 323                 if (le16_to_cpu(dev->descriptor.idProduct) ==
 324                                 features_array[i].pid) {
 325                         hanwang->features = &features_array[i];
 326                         return true;
 327                 }
 328         }
 329
 330         return false;
 331 }
 332
 333
 334 static int hanwang_probe(struct usb_interface *intf, const struct usb_device_id *id)
 335 {
 336         struct usb_device *dev = interface_to_usbdev(intf);
 337         struct usb_endpoint_descriptor *endpoint;
 338         struct hanwang *hanwang;
 339         struct input_dev *input_dev;
 340         int error;
 341         int i;
 342
 343         if (intf->cur_altsetting->desc.bNumEndpoints < 1)
 344                 return -ENODEV;
 345
 346         hanwang = kzalloc(sizeof(struct hanwang), GFP_KERNEL);
 347         input_dev = input_allocate_device();
 348         if (!hanwang || !input_dev) {
 349                 error = -ENOMEM;
 350                 goto fail1;
 351         }
 352
 353         if (!get_features(dev, hanwang)) {
 354                 error = -ENXIO;
 355                 goto fail1;
 356         }
 357
 358         hanwang->data = usb_alloc_coherent(dev, hanwang->features->pkg_len,
 359                                         GFP_KERNEL, &hanwang->data_dma);
 360         if (!hanwang->data) {
 361                 error = -ENOMEM;
 362                 goto fail1;
 363         }
 364
 365         hanwang->irq = usb_alloc_urb(0, GFP_KERNEL);
 366         if (!hanwang->irq) {
 367                 error = -ENOMEM;
 368                 goto fail2;
 369         }
 370
 371         hanwang->usbdev = dev;
 372         hanwang->dev = input_dev;
 373
 374         usb_make_path(dev, hanwang->phys, sizeof(hanwang->phys));
 375         strlcat(hanwang->phys, "/input0", sizeof(hanwang->phys));
 376
 377         strlcpy(hanwang->name, hanwang->features->name, sizeof(hanwang->name));
 378         input_dev->name = hanwang->name;
 379         input_dev->phys = hanwang->phys;
 380         usb_to_input_id(dev, &input_dev->id);
 381         input_dev->dev.parent = &intf->dev;
 382
 383         input_set_drvdata(input_dev, hanwang);
 384
 385         input_dev->open = hanwang_open;
 386         input_dev->close = hanwang_close;
 387
 388         for (i = 0; i < ARRAY_SIZE(hw_eventtypes); ++i)
 389                 __set_bit(hw_eventtypes[i], input_dev->evbit);
 390
 391         for (i = 0; i < ARRAY_SIZE(hw_absevents); ++i)
 392                 __set_bit(hw_absevents[i], input_dev->absbit);
 393
 394         for (i = 0; i < ARRAY_SIZE(hw_btnevents); ++i)
 395                 __set_bit(hw_btnevents[i], input_dev->keybit);
 396
 397         for (i = 0; i < ARRAY_SIZE(hw_mscevents); ++i)
 398                 __set_bit(hw_mscevents[i], input_dev->mscbit);
 399
 400         input_set_abs_params(input_dev, ABS_X,
 401                              0, hanwang->features->max_x, 4, 0);
 402         input_set_abs_params(input_dev, ABS_Y,
 403                              0, hanwang->features->max_y, 4, 0);
 404         input_set_abs_params(input_dev, ABS_TILT_X,
 405                              0, hanwang->features->max_tilt_x, 0, 0);
 406         input_set_abs_params(input_dev, ABS_TILT_Y,
 407                              0, hanwang->features->max_tilt_y, 0, 0);
 408         input_set_abs_params(input_dev, ABS_PRESSURE,
 409                              0, hanwang->features->max_pressure, 0, 0);
 410
 411         endpoint = &intf->cur_altsetting->endpoint[0].desc;
 412         usb_fill_int_urb(hanwang->irq, dev,
 413                         usb_rcvintpipe(dev, endpoint->bEndpointAddress),
 414                         hanwang->data, hanwang->features->pkg_len,
 415                         hanwang_irq, hanwang, endpoint->bInterval);
 416         hanwang->irq->transfer_dma = hanwang->data_dma;
 417         hanwang->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 418
 419         error = input_register_device(hanwang->dev);
 420         if (error)
 421                 goto fail3;
 422
 423         usb_set_intfdata(intf, hanwang);
 424
 425         return 0;
 426
 427  fail3: usb_free_urb(hanwang->irq);
 428  fail2: usb_free_coherent(dev, hanwang->features->pkg_len,
 429                         hanwang->data, hanwang->data_dma);
 430  fail1: input_free_device(input_dev);
 431         kfree(hanwang);
 432         return error;
 433
 434 }
 435
 436 static void hanwang_disconnect(struct usb_interface *intf)
 437 {
 438         struct hanwang *hanwang = usb_get_intfdata(intf);
 439
 440         input_unregister_device(hanwang->dev);
 441         usb_free_urb(hanwang->irq);
 442         usb_free_coherent(interface_to_usbdev(intf),
 443                         hanwang->features->pkg_len, hanwang->data,
 444                         hanwang->data_dma);
 445         kfree(hanwang);
 446         usb_set_intfdata(intf, NULL);
 447 }
 448
 449 static const struct usb_device_id hanwang_ids[] = {
 450         { HANWANG_TABLET_DEVICE(USB_VENDOR_ID_HANWANG, HANWANG_TABLET_INT_CLASS,
 451                 HANWANG_TABLET_INT_SUB_CLASS, HANWANG_TABLET_INT_PROTOCOL) },
 452         {}
 453 };
 454
 455 MODULE_DEVICE_TABLE(usb, hanwang_ids);
 456
 457 static struct usb_driver hanwang_driver = {
 458         .name           = "hanwang",
 459         .probe          = hanwang_probe,
 460         .disconnect     = hanwang_disconnect,
 461         .id_table       = hanwang_ids,
 462 };
 463
 464 module_usb_driver(hanwang_driver);