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