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", __FUNCTION__, urb->status);
  60                 return;
  61         default:
  62                 dbg("%s - nonzero urb status received: %d", __FUNCTION__, 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         retval = usb_submit_urb (urb, GFP_ATOMIC);
  74         if (retval)
  75                 err ("%s - usb_submit_urb failed with result %d",
  76                      __FUNCTION__, retval);
  77 }
  78
  79 void wacom_report_key(void *wcombo, unsigned int key_type, int key_data)
  80 {
  81         input_report_key(get_input_dev((struct wacom_combo *)wcombo), key_type, key_data);
  82         return;
  83 }
  84
  85 void wacom_report_abs(void *wcombo, unsigned int abs_type, int abs_data)
  86 {
  87         input_report_abs(get_input_dev((struct wacom_combo *)wcombo), abs_type, abs_data);
  88         return;
  89 }
  90
  91 void wacom_report_rel(void *wcombo, unsigned int rel_type, int rel_data)
  92 {
  93         input_report_rel(get_input_dev((struct wacom_combo *)wcombo), rel_type, rel_data);
  94         return;
  95 }
  96
  97 void wacom_input_event(void *wcombo, unsigned int type, unsigned int code, int value)
  98 {
  99         input_event(get_input_dev((struct wacom_combo *)wcombo), type, code, value);
 100         return;
 101 }
 102
 103 __u16 wacom_be16_to_cpu(unsigned char *data)
 104 {
 105         __u16 value;
 106         value = be16_to_cpu(*(__be16 *) data);
 107         return value;
 108 }
 109
 110 __u16 wacom_le16_to_cpu(unsigned char *data)
 111 {
 112         __u16 value;
 113         value = le16_to_cpu(*(__le16 *) data);
 114         return value;
 115 }
 116
 117 void wacom_input_sync(void *wcombo)
 118 {
 119         input_sync(get_input_dev((struct wacom_combo *)wcombo));
 120         return;
 121 }
 122
 123 static int wacom_open(struct input_dev *dev)
 124 {
 125         struct wacom *wacom = input_get_drvdata(dev);
 126
 127         wacom->irq->dev = wacom->usbdev;
 128         if (usb_submit_urb(wacom->irq, GFP_KERNEL))
 129                 return -EIO;
 130
 131         return 0;
 132 }
 133
 134 static void wacom_close(struct input_dev *dev)
 135 {
 136         struct wacom *wacom = input_get_drvdata(dev);
 137
 138         usb_kill_urb(wacom->irq);
 139 }
 140
 141 void input_dev_mo(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 142 {
 143         input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_1) |
 144                 BIT_MASK(BTN_5);
 145         input_set_abs_params(input_dev, ABS_WHEEL, 0, 71, 0, 0);
 146 }
 147
 148 void input_dev_g4(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 149 {
 150         input_dev->evbit[0] |= BIT_MASK(EV_MSC);
 151         input_dev->mscbit[0] |= BIT_MASK(MSC_SERIAL);
 152         input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_FINGER);
 153         input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_0) |
 154                 BIT_MASK(BTN_4);
 155 }
 156
 157 void input_dev_g(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 158 {
 159         input_dev->evbit[0] |= BIT_MASK(EV_REL);
 160         input_dev->relbit[0] |= BIT_MASK(REL_WHEEL);
 161         input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_LEFT) |
 162                 BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE);
 163         input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_RUBBER) |
 164                 BIT_MASK(BTN_TOOL_MOUSE) | BIT_MASK(BTN_STYLUS2);
 165         input_set_abs_params(input_dev, ABS_DISTANCE, 0, wacom_wac->features->distance_max, 0, 0);
 166 }
 167
 168 void input_dev_i3s(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 169 {
 170         input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_FINGER);
 171         input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_0) |
 172                 BIT_MASK(BTN_1) | BIT_MASK(BTN_2) | BIT_MASK(BTN_3);
 173         input_set_abs_params(input_dev, ABS_RX, 0, 4096, 0, 0);
 174 }
 175
 176 void input_dev_i3(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 177 {
 178         input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_4) |
 179                 BIT_MASK(BTN_5) | BIT_MASK(BTN_6) | BIT_MASK(BTN_7);
 180         input_set_abs_params(input_dev, ABS_RY, 0, 4096, 0, 0);
 181 }
 182
 183 void input_dev_i(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 184 {
 185         input_dev->evbit[0] |= BIT_MASK(EV_MSC) | BIT_MASK(EV_REL);
 186         input_dev->mscbit[0] |= BIT_MASK(MSC_SERIAL);
 187         input_dev->relbit[0] |= BIT_MASK(REL_WHEEL);
 188         input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_LEFT) |
 189                 BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE) |
 190                 BIT_MASK(BTN_SIDE) | BIT_MASK(BTN_EXTRA);
 191         input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_RUBBER) |
 192                 BIT_MASK(BTN_TOOL_MOUSE) | BIT_MASK(BTN_TOOL_BRUSH) |
 193                 BIT_MASK(BTN_TOOL_PENCIL) | BIT_MASK(BTN_TOOL_AIRBRUSH) |
 194                 BIT_MASK(BTN_TOOL_LENS) | BIT_MASK(BTN_STYLUS2);
 195         input_set_abs_params(input_dev, ABS_DISTANCE, 0, wacom_wac->features->distance_max, 0, 0);
 196         input_set_abs_params(input_dev, ABS_WHEEL, 0, 1023, 0, 0);
 197         input_set_abs_params(input_dev, ABS_TILT_X, 0, 127, 0, 0);
 198         input_set_abs_params(input_dev, ABS_TILT_Y, 0, 127, 0, 0);
 199         input_set_abs_params(input_dev, ABS_RZ, -900, 899, 0, 0);
 200         input_set_abs_params(input_dev, ABS_THROTTLE, -1023, 1023, 0, 0);
 201 }
 202
 203 void input_dev_pl(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 204 {
 205         input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_STYLUS2) |
 206                 BIT_MASK(BTN_TOOL_RUBBER);
 207 }
 208
 209 void input_dev_pt(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 210 {
 211         input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_RUBBER);
 212 }
 213
 214 static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *id)
 215 {
 216         struct usb_device *dev = interface_to_usbdev(intf);
 217         struct usb_endpoint_descriptor *endpoint;
 218         struct wacom *wacom;
 219         struct wacom_wac *wacom_wac;
 220         struct input_dev *input_dev;
 221         int error = -ENOMEM;
 222         char rep_data[2], limit = 0;
 223
 224         wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
 225         wacom_wac = kzalloc(sizeof(struct wacom_wac), GFP_KERNEL);
 226         input_dev = input_allocate_device();
 227         if (!wacom || !input_dev || !wacom_wac)
 228                 goto fail1;
 229
 230         wacom_wac->data = usb_buffer_alloc(dev, 10, GFP_KERNEL, &wacom->data_dma);
 231         if (!wacom_wac->data)
 232                 goto fail1;
 233
 234         wacom->irq = usb_alloc_urb(0, GFP_KERNEL);
 235         if (!wacom->irq)
 236                 goto fail2;
 237
 238         wacom->usbdev = dev;
 239         wacom->dev = input_dev;
 240         usb_make_path(dev, wacom->phys, sizeof(wacom->phys));
 241         strlcat(wacom->phys, "/input0", sizeof(wacom->phys));
 242
 243         wacom_wac->features = get_wacom_feature(id);
 244         BUG_ON(wacom_wac->features->pktlen > 10);
 245
 246         input_dev->name = wacom_wac->features->name;
 247         wacom->wacom_wac = wacom_wac;
 248         usb_to_input_id(dev, &input_dev->id);
 249
 250         input_dev->dev.parent = &intf->dev;
 251
 252         input_set_drvdata(input_dev, wacom);
 253
 254         input_dev->open = wacom_open;
 255         input_dev->close = wacom_close;
 256
 257         input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
 258         input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_PEN) |
 259                 BIT_MASK(BTN_TOUCH) | BIT_MASK(BTN_STYLUS);
 260         input_set_abs_params(input_dev, ABS_X, 0, wacom_wac->features->x_max, 4, 0);
 261         input_set_abs_params(input_dev, ABS_Y, 0, wacom_wac->features->y_max, 4, 0);
 262         input_set_abs_params(input_dev, ABS_PRESSURE, 0, wacom_wac->features->pressure_max, 0, 0);
 263         input_dev->absbit[BIT_WORD(ABS_MISC)] |= BIT_MASK(ABS_MISC);
 264
 265         wacom_init_input_dev(input_dev, wacom_wac);
 266
 267         endpoint = &intf->cur_altsetting->endpoint[0].desc;
 268
 269         usb_fill_int_urb(wacom->irq, dev,
 270                          usb_rcvintpipe(dev, endpoint->bEndpointAddress),
 271                          wacom_wac->data, wacom_wac->features->pktlen,
 272                          wacom_sys_irq, wacom, endpoint->bInterval);
 273         wacom->irq->transfer_dma = wacom->data_dma;
 274         wacom->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 275
 276         error = input_register_device(wacom->dev);
 277         if (error)
 278                 goto fail3;
 279
 280         /* Ask the tablet to report tablet data. Repeat until it succeeds */
 281         do {
 282                 rep_data[0] = 2;
 283                 rep_data[1] = 2;
 284                 usb_set_report(intf, 3, 2, rep_data, 2);
 285                 usb_get_report(intf, 3, 2, rep_data, 2);
 286         } while (rep_data[1] != 2 && limit++ < 5);
 287
 288         usb_set_intfdata(intf, wacom);
 289         return 0;
 290
 291  fail3: usb_free_urb(wacom->irq);
 292  fail2: usb_buffer_free(dev, 10, wacom_wac->data, wacom->data_dma);
 293  fail1: input_free_device(input_dev);
 294         kfree(wacom);
 295         kfree(wacom_wac);
 296         return error;
 297 }
 298
 299 static void wacom_disconnect(struct usb_interface *intf)
 300 {
 301         struct wacom *wacom = usb_get_intfdata (intf);
 302
 303         usb_set_intfdata(intf, NULL);
 304         if (wacom) {
 305                 usb_kill_urb(wacom->irq);
 306                 input_unregister_device(wacom->dev);
 307                 usb_free_urb(wacom->irq);
 308                 usb_buffer_free(interface_to_usbdev(intf), 10, wacom->wacom_wac->data, wacom->data_dma);
 309                 kfree(wacom->wacom_wac);
 310                 kfree(wacom);
 311         }
 312 }
 313
 314 static struct usb_driver wacom_driver = {
 315         .name =         "wacom",
 316         .probe =        wacom_probe,
 317         .disconnect =   wacom_disconnect,
 318 };
 319
 320 static int __init wacom_init(void)
 321 {
 322         int result;
 323         wacom_driver.id_table = get_device_table();
 324         result = usb_register(&wacom_driver);
 325         if (result == 0)
 326                 info(DRIVER_VERSION ":" DRIVER_DESC);
 327         return result;
 328 }
 329
 330 static void __exit wacom_exit(void)
 331 {
 332         usb_deregister(&wacom_driver);
 333 }
 334
 335 module_init(wacom_init);
 336 module_exit(wacom_exit);