drivers/input/tablet/wacom_sys.c

   1 /*
   2  * drivers/input/tablet/wacom_sys.c
   3  *
   4  *  USB Wacom Graphire and Wacom Intuos tablet support - system specific code
   5  */
   6
   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
  14 #include "wacom.h"
  15 #include "wacom_wac.h"
  16
  17 #define USB_REQ_GET_REPORT      0x01
  18 #define USB_REQ_SET_REPORT      0x09
  19
  20 static int usb_get_report(struct usb_interface *intf, unsigned char type,
  21                                 unsigned char id, void *buf, int size)
  22 {
  23         return usb_control_msg(interface_to_usbdev(intf),
  24                 usb_rcvctrlpipe(interface_to_usbdev(intf), 0),
  25                 USB_REQ_GET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
  26                 (type << 8) + id, intf->altsetting[0].desc.bInterfaceNumber,
  27                 buf, size, 100);
  28 }
  29
  30 static int usb_set_report(struct usb_interface *intf, unsigned char type,
  31                                 unsigned char id, void *buf, int size)
  32 {
  33         return usb_control_msg(interface_to_usbdev(intf),
  34                 usb_sndctrlpipe(interface_to_usbdev(intf), 0),
  35                 USB_REQ_SET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
  36                 (type << 8) + id, intf->altsetting[0].desc.bInterfaceNumber,
  37                 buf, size, 1000);
  38 }
  39
  40 static struct input_dev * get_input_dev(struct wacom_combo *wcombo)
  41 {
  42         return wcombo->wacom->dev;
  43 }
  44
  45 static void wacom_sys_irq(struct urb *urb)
  46 {
  47         struct wacom *wacom = urb->context;
  48         struct wacom_combo wcombo;
  49         int retval;
  50
  51         switch (urb->status) {
  52         case 0:
  53                 /* success */
  54                 break;
  55         case -ECONNRESET:
  56         case -ENOENT:
  57         case -ESHUTDOWN:
  58                 /* this urb is terminated, clean up */
  59                 dbg("%s - urb shutting down with status: %d", __func__, urb->status);
  60                 return;
  61         default:
  62                 dbg("%s - nonzero urb status received: %d", __func__, urb->status);
  63                 goto exit;
  64         }
  65
  66         wcombo.wacom = wacom;
  67         wcombo.urb = urb;
  68
  69         if (wacom_wac_irq(wacom->wacom_wac, (void *)&wcombo))
  70                 input_sync(get_input_dev(&wcombo));
  71
  72  exit:
  73         usb_mark_last_busy(wacom->usbdev);
  74         retval = usb_submit_urb (urb, GFP_ATOMIC);
  75         if (retval)
  76                 err ("%s - usb_submit_urb failed with result %d",
  77                      __func__, retval);
  78 }
  79
  80 void wacom_report_key(void *wcombo, unsigned int key_type, int key_data)
  81 {
  82         input_report_key(get_input_dev((struct wacom_combo *)wcombo), key_type, key_data);
  83         return;
  84 }
  85
  86 void wacom_report_abs(void *wcombo, unsigned int abs_type, int abs_data)
  87 {
  88         input_report_abs(get_input_dev((struct wacom_combo *)wcombo), abs_type, abs_data);
  89         return;
  90 }
  91
  92 void wacom_report_rel(void *wcombo, unsigned int rel_type, int rel_data)
  93 {
  94         input_report_rel(get_input_dev((struct wacom_combo *)wcombo), rel_type, rel_data);
  95         return;
  96 }
  97
  98 void wacom_input_event(void *wcombo, unsigned int type, unsigned int code, int value)
  99 {
 100         input_event(get_input_dev((struct wacom_combo *)wcombo), type, code, value);
 101         return;
 102 }
 103
 104 __u16 wacom_be16_to_cpu(unsigned char *data)
 105 {
 106         __u16 value;
 107         value = be16_to_cpu(*(__be16 *) data);
 108         return value;
 109 }
 110
 111 __u16 wacom_le16_to_cpu(unsigned char *data)
 112 {
 113         __u16 value;
 114         value = le16_to_cpu(*(__le16 *) data);
 115         return value;
 116 }
 117
 118 void wacom_input_sync(void *wcombo)
 119 {
 120         input_sync(get_input_dev((struct wacom_combo *)wcombo));
 121         return;
 122 }
 123
 124 static int wacom_open(struct input_dev *dev)
 125 {
 126         struct wacom *wacom = input_get_drvdata(dev);
 127
 128         mutex_lock(&wacom->lock);
 129
 130         wacom->irq->dev = wacom->usbdev;
 131
 132         if (usb_autopm_get_interface(wacom->intf) < 0) {
 133                 mutex_unlock(&wacom->lock);
 134                 return -EIO;
 135         }
 136
 137         if (usb_submit_urb(wacom->irq, GFP_KERNEL)) {
 138                 usb_autopm_put_interface(wacom->intf);
 139                 mutex_unlock(&wacom->lock);
 140                 return -EIO;
 141         }
 142
 143         wacom->open = 1;
 144         wacom->intf->needs_remote_wakeup = 1;
 145
 146         mutex_unlock(&wacom->lock);
 147         return 0;
 148 }
 149
 150 static void wacom_close(struct input_dev *dev)
 151 {
 152         struct wacom *wacom = input_get_drvdata(dev);
 153
 154         mutex_lock(&wacom->lock);
 155         usb_kill_urb(wacom->irq);
 156         wacom->open = 0;
 157         wacom->intf->needs_remote_wakeup = 0;
 158         mutex_unlock(&wacom->lock);
 159 }
 160
 161 void input_dev_mo(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 162 {
 163         input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_1) |
 164                 BIT_MASK(BTN_5);
 165         input_set_abs_params(input_dev, ABS_WHEEL, 0, 71, 0, 0);
 166 }
 167
 168 void input_dev_g4(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 169 {
 170         input_dev->evbit[0] |= BIT_MASK(EV_MSC);
 171         input_dev->mscbit[0] |= BIT_MASK(MSC_SERIAL);
 172         input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_FINGER);
 173         input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_0) |
 174                 BIT_MASK(BTN_4);
 175 }
 176
 177 void input_dev_g(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 178 {
 179         input_dev->evbit[0] |= BIT_MASK(EV_REL);
 180         input_dev->relbit[0] |= BIT_MASK(REL_WHEEL);
 181         input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_LEFT) |
 182                 BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE);
 183         input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_RUBBER) |
 184                 BIT_MASK(BTN_TOOL_MOUSE) | BIT_MASK(BTN_STYLUS2);
 185         input_set_abs_params(input_dev, ABS_DISTANCE, 0, wacom_wac->features->distance_max, 0, 0);
 186 }
 187
 188 void input_dev_i3s(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 189 {
 190         input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_FINGER);
 191         input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_0) |
 192                 BIT_MASK(BTN_1) | BIT_MASK(BTN_2) | BIT_MASK(BTN_3);
 193         input_set_abs_params(input_dev, ABS_RX, 0, 4096, 0, 0);
 194         input_set_abs_params(input_dev, ABS_Z, -900, 899, 0, 0);
 195 }
 196
 197 void input_dev_i3(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 198 {
 199         input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_4) |
 200                 BIT_MASK(BTN_5) | BIT_MASK(BTN_6) | BIT_MASK(BTN_7);
 201         input_set_abs_params(input_dev, ABS_RY, 0, 4096, 0, 0);
 202 }
 203
 204 void input_dev_bee(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 205 {
 206         input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_8) | BIT_MASK(BTN_9);
 207 }
 208
 209 void input_dev_i(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 210 {
 211         input_dev->evbit[0] |= BIT_MASK(EV_MSC) | BIT_MASK(EV_REL);
 212         input_dev->mscbit[0] |= BIT_MASK(MSC_SERIAL);
 213         input_dev->relbit[0] |= BIT_MASK(REL_WHEEL);
 214         input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_LEFT) |
 215                 BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE) |
 216                 BIT_MASK(BTN_SIDE) | BIT_MASK(BTN_EXTRA);
 217         input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_RUBBER) |
 218                 BIT_MASK(BTN_TOOL_MOUSE) | BIT_MASK(BTN_TOOL_BRUSH) |
 219                 BIT_MASK(BTN_TOOL_PENCIL) | BIT_MASK(BTN_TOOL_AIRBRUSH) |
 220                 BIT_MASK(BTN_TOOL_LENS) | BIT_MASK(BTN_STYLUS2);
 221         input_set_abs_params(input_dev, ABS_DISTANCE, 0, wacom_wac->features->distance_max, 0, 0);
 222         input_set_abs_params(input_dev, ABS_WHEEL, 0, 1023, 0, 0);
 223         input_set_abs_params(input_dev, ABS_TILT_X, 0, 127, 0, 0);
 224         input_set_abs_params(input_dev, ABS_TILT_Y, 0, 127, 0, 0);
 225         input_set_abs_params(input_dev, ABS_RZ, -900, 899, 0, 0);
 226         input_set_abs_params(input_dev, ABS_THROTTLE, -1023, 1023, 0, 0);
 227 }
 228
 229 void input_dev_pl(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 230 {
 231         input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_STYLUS2) |
 232                 BIT_MASK(BTN_TOOL_RUBBER);
 233 }
 234
 235 void input_dev_pt(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 236 {
 237         input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_RUBBER);
 238 }
 239
 240 static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *id)
 241 {
 242         struct usb_device *dev = interface_to_usbdev(intf);
 243         struct usb_endpoint_descriptor *endpoint;
 244         struct wacom *wacom;
 245         struct wacom_wac *wacom_wac;
 246         struct input_dev *input_dev;
 247         int error = -ENOMEM;
 248         char rep_data[2], limit = 0;
 249
 250         wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
 251         wacom_wac = kzalloc(sizeof(struct wacom_wac), GFP_KERNEL);
 252         input_dev = input_allocate_device();
 253         if (!wacom || !input_dev || !wacom_wac)
 254                 goto fail1;
 255
 256         wacom_wac->data = usb_buffer_alloc(dev, 10, GFP_KERNEL, &wacom->data_dma);
 257         if (!wacom_wac->data)
 258                 goto fail1;
 259
 260         wacom->irq = usb_alloc_urb(0, GFP_KERNEL);
 261         if (!wacom->irq)
 262                 goto fail2;
 263
 264         wacom->usbdev = dev;
 265         wacom->dev = input_dev;
 266         wacom->intf = intf;
 267         mutex_init(&wacom->lock);
 268         usb_make_path(dev, wacom->phys, sizeof(wacom->phys));
 269         strlcat(wacom->phys, "/input0", sizeof(wacom->phys));
 270
 271         wacom_wac->features = get_wacom_feature(id);
 272         BUG_ON(wacom_wac->features->pktlen > 10);
 273
 274         input_dev->name = wacom_wac->features->name;
 275         wacom->wacom_wac = wacom_wac;
 276         usb_to_input_id(dev, &input_dev->id);
 277
 278         input_dev->dev.parent = &intf->dev;
 279
 280         input_set_drvdata(input_dev, wacom);
 281
 282         input_dev->open = wacom_open;
 283         input_dev->close = wacom_close;
 284
 285         input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
 286         input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_PEN) |
 287                 BIT_MASK(BTN_TOUCH) | BIT_MASK(BTN_STYLUS);
 288         input_set_abs_params(input_dev, ABS_X, 0, wacom_wac->features->x_max, 4, 0);
 289         input_set_abs_params(input_dev, ABS_Y, 0, wacom_wac->features->y_max, 4, 0);
 290         input_set_abs_params(input_dev, ABS_PRESSURE, 0, wacom_wac->features->pressure_max, 0, 0);
 291         input_dev->absbit[BIT_WORD(ABS_MISC)] |= BIT_MASK(ABS_MISC);
 292
 293         wacom_init_input_dev(input_dev, wacom_wac);
 294
 295         endpoint = &intf->cur_altsetting->endpoint[0].desc;
 296
 297         usb_fill_int_urb(wacom->irq, dev,
 298                          usb_rcvintpipe(dev, endpoint->bEndpointAddress),
 299                          wacom_wac->data, wacom_wac->features->pktlen,
 300                          wacom_sys_irq, wacom, endpoint->bInterval);
 301         wacom->irq->transfer_dma = wacom->data_dma;
 302         wacom->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 303
 304         error = input_register_device(wacom->dev);
 305         if (error)
 306                 goto fail3;
 307
 308         /* Ask the tablet to report tablet data. Repeat until it succeeds */
 309         do {
 310                 rep_data[0] = 2;
 311                 rep_data[1] = 2;
 312                 usb_set_report(intf, 3, 2, rep_data, 2);
 313                 usb_get_report(intf, 3, 2, rep_data, 2);
 314         } while (rep_data[1] != 2 && limit++ < 5);
 315
 316         usb_set_intfdata(intf, wacom);
 317         return 0;
 318
 319  fail3: usb_free_urb(wacom->irq);
 320  fail2: usb_buffer_free(dev, 10, wacom_wac->data, wacom->data_dma);
 321  fail1: input_free_device(input_dev);
 322         kfree(wacom);
 323         kfree(wacom_wac);
 324         return error;
 325 }
 326
 327 static void wacom_disconnect(struct usb_interface *intf)
 328 {
 329         struct wacom *wacom = usb_get_intfdata(intf);
 330
 331         usb_set_intfdata(intf, NULL);
 332
 333         usb_kill_urb(wacom->irq);
 334         input_unregister_device(wacom->dev);
 335         usb_free_urb(wacom->irq);
 336         usb_buffer_free(interface_to_usbdev(intf), 10, wacom->wacom_wac->data, wacom->data_dma);
 337         kfree(wacom->wacom_wac);
 338         kfree(wacom);
 339 }
 340
 341 static int wacom_suspend(struct usb_interface *intf, pm_message_t message)
 342 {
 343         struct wacom *wacom = usb_get_intfdata(intf);
 344
 345         mutex_lock(&wacom->lock);
 346         usb_kill_urb(wacom->irq);
 347         mutex_unlock(&wacom->lock);
 348
 349         return 0;
 350 }
 351
 352 static int wacom_resume(struct usb_interface *intf)
 353 {
 354         struct wacom *wacom = usb_get_intfdata(intf);
 355         int rv;
 356
 357         mutex_lock(&wacom->lock);
 358         if (wacom->open)
 359                 rv = usb_submit_urb(wacom->irq, GFP_NOIO);
 360         else
 361                 rv = 0;
 362         mutex_unlock(&wacom->lock);
 363
 364         return rv;
 365 }
 366
 367 static int wacom_reset_resume(struct usb_interface *intf)
 368 {
 369         return wacom_resume(intf);
 370 }
 371
 372 static struct usb_driver wacom_driver = {
 373         .name =         "wacom",
 374         .probe =        wacom_probe,
 375         .disconnect =   wacom_disconnect,
 376         .suspend =      wacom_suspend,
 377         .resume =       wacom_resume,
 378         .reset_resume = wacom_reset_resume,
 379         .supports_autosuspend = 1,
 380 };
 381
 382 static int __init wacom_init(void)
 383 {
 384         int result;
 385         wacom_driver.id_table = get_device_table();
 386         result = usb_register(&wacom_driver);
 387         if (result == 0)
 388                 info(DRIVER_VERSION ":" DRIVER_DESC);
 389         return result;
 390 }
 391
 392 static void __exit wacom_exit(void)
 393 {
 394         usb_deregister(&wacom_driver);
 395 }
 396
 397 module_init(wacom_init);
 398 module_exit(wacom_exit);