drivers/usb/input/wacom_sys.c

   1 /*
   2  * drivers/usb/input/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 void wacom_sys_irq(struct urb *urb, struct pt_regs *regs)
  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         wcombo.regs = regs;
  69
  70         if (wacom_wac_irq(wacom->wacom_wac, (void *)&wcombo))
  71                 input_sync(get_input_dev(&wcombo));
  72
  73  exit:
  74         retval = usb_submit_urb (urb, GFP_ATOMIC);
  75         if (retval)
  76                 err ("%s - usb_submit_urb failed with result %d",
  77                      __FUNCTION__, 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 = be16_to_cpu(*(__be16 *) data);
 115         return value;
 116 }
 117
 118 void wacom_input_regs(void *wcombo)
 119 {
 120         input_regs(get_input_dev((struct wacom_combo *)wcombo), ((struct wacom_combo *)wcombo)->regs);
 121         return;
 122 }
 123
 124 void wacom_input_sync(void *wcombo)
 125 {
 126         input_sync(get_input_dev((struct wacom_combo *)wcombo));
 127         return;
 128 }
 129
 130 static int wacom_open(struct input_dev *dev)
 131 {
 132         struct wacom *wacom = dev->private;
 133
 134         wacom->irq->dev = wacom->usbdev;
 135         if (usb_submit_urb(wacom->irq, GFP_KERNEL))
 136                 return -EIO;
 137
 138         return 0;
 139 }
 140
 141 static void wacom_close(struct input_dev *dev)
 142 {
 143         struct wacom *wacom = dev->private;
 144
 145         usb_kill_urb(wacom->irq);
 146 }
 147
 148 void input_dev_g4(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 149 {
 150         input_dev->evbit[0] |= BIT(EV_MSC);
 151         input_dev->mscbit[0] |= BIT(MSC_SERIAL);
 152         input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_FINGER);
 153         input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_0) | BIT(BTN_1) | BIT(BTN_2) | BIT(BTN_3) | BIT(BTN_4) | BIT(BTN_5) | BIT(BTN_6) | BIT(BTN_7);
 154 }
 155
 156 void input_dev_g(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 157 {
 158         input_dev->evbit[0] |= BIT(EV_REL);
 159         input_dev->relbit[0] |= BIT(REL_WHEEL);
 160         input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
 161         input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_RUBBER) | BIT(BTN_TOOL_MOUSE) | BIT(BTN_STYLUS2);
 162         input_set_abs_params(input_dev, ABS_DISTANCE, 0, wacom_wac->features->distance_max, 0, 0);
 163 }
 164
 165 void input_dev_i3(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 166 {
 167         input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_FINGER);
 168         input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_0) | BIT(BTN_1) | BIT(BTN_2) | BIT(BTN_3) | BIT(BTN_4) | BIT(BTN_5) | BIT(BTN_6) | BIT(BTN_7);
 169         input_set_abs_params(input_dev, ABS_RX, 0, 4097, 0, 0);
 170         input_set_abs_params(input_dev, ABS_RY, 0, 4097, 0, 0);
 171 }
 172
 173 void input_dev_i(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 174 {
 175         input_dev->evbit[0] |= BIT(EV_MSC) | BIT(EV_REL);
 176         input_dev->mscbit[0] |= BIT(MSC_SERIAL);
 177         input_dev->relbit[0] |= BIT(REL_WHEEL);
 178         input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE) | BIT(BTN_SIDE) | BIT(BTN_EXTRA);
 179         input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_RUBBER) | BIT(BTN_TOOL_MOUSE) | BIT(BTN_TOOL_BRUSH)
 180                 | BIT(BTN_TOOL_PENCIL) | BIT(BTN_TOOL_AIRBRUSH) | BIT(BTN_TOOL_LENS) | BIT(BTN_STYLUS2);
 181         input_set_abs_params(input_dev, ABS_DISTANCE, 0, wacom_wac->features->distance_max, 0, 0);
 182         input_set_abs_params(input_dev, ABS_WHEEL, 0, 1023, 0, 0);
 183         input_set_abs_params(input_dev, ABS_TILT_X, 0, 127, 0, 0);
 184         input_set_abs_params(input_dev, ABS_TILT_Y, 0, 127, 0, 0);
 185         input_set_abs_params(input_dev, ABS_RZ, -900, 899, 0, 0);
 186         input_set_abs_params(input_dev, ABS_THROTTLE, -1023, 1023, 0, 0);
 187 }
 188
 189 void input_dev_pl(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 190 {
 191         input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_STYLUS2) | BIT(BTN_TOOL_RUBBER);
 192 }
 193
 194 void input_dev_pt(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 195 {
 196         input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_RUBBER);
 197 }
 198
 199 static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *id)
 200 {
 201         struct usb_device *dev = interface_to_usbdev(intf);
 202         struct usb_endpoint_descriptor *endpoint;
 203         struct wacom *wacom;
 204         struct wacom_wac *wacom_wac;
 205         struct input_dev *input_dev;
 206         char rep_data[2], limit = 0;
 207
 208         wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
 209         wacom_wac = kzalloc(sizeof(struct wacom_wac), GFP_KERNEL);
 210         input_dev = input_allocate_device();
 211         if (!wacom || !input_dev || !wacom_wac)
 212                 goto fail1;
 213
 214         wacom_wac->data = usb_buffer_alloc(dev, 10, GFP_KERNEL, &wacom->data_dma);
 215         if (!wacom_wac->data)
 216                 goto fail1;
 217
 218         wacom->irq = usb_alloc_urb(0, GFP_KERNEL);
 219         if (!wacom->irq)
 220                 goto fail2;
 221
 222         wacom->usbdev = dev;
 223         wacom->dev = input_dev;
 224         usb_make_path(dev, wacom->phys, sizeof(wacom->phys));
 225         strlcat(wacom->phys, "/input0", sizeof(wacom->phys));
 226
 227         wacom_wac->features = get_wacom_feature(id);
 228         if (wacom_wac->features->pktlen > 10)
 229                 BUG();
 230
 231         input_dev->name = wacom_wac->features->name;
 232         wacom->wacom_wac = wacom_wac;
 233         usb_to_input_id(dev, &input_dev->id);
 234
 235         input_dev->cdev.dev = &intf->dev;
 236         input_dev->private = wacom;
 237         input_dev->open = wacom_open;
 238         input_dev->close = wacom_close;
 239
 240         input_dev->evbit[0] |= BIT(EV_KEY) | BIT(EV_ABS);
 241         input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_PEN) | BIT(BTN_TOUCH) | BIT(BTN_STYLUS);
 242         input_set_abs_params(input_dev, ABS_X, 0, wacom_wac->features->x_max, 4, 0);
 243         input_set_abs_params(input_dev, ABS_Y, 0, wacom_wac->features->y_max, 4, 0);
 244         input_set_abs_params(input_dev, ABS_PRESSURE, 0, wacom_wac->features->pressure_max, 0, 0);
 245         input_dev->absbit[LONG(ABS_MISC)] |= BIT(ABS_MISC);
 246
 247         wacom_init_input_dev(input_dev, wacom_wac);
 248
 249         endpoint = &intf->cur_altsetting->endpoint[0].desc;
 250
 251         usb_fill_int_urb(wacom->irq, dev,
 252                          usb_rcvintpipe(dev, endpoint->bEndpointAddress),
 253                          wacom_wac->data, wacom_wac->features->pktlen,
 254                          wacom_wac->features->irq, wacom, endpoint->bInterval);
 255         wacom->irq->transfer_dma = wacom->data_dma;
 256         wacom->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 257
 258         input_register_device(wacom->dev);
 259
 260         /* Ask the tablet to report tablet data. Repeat until it succeeds */
 261         do {
 262                 rep_data[0] = 2;
 263                 rep_data[1] = 2;
 264                 usb_set_report(intf, 3, 2, rep_data, 2);
 265                 usb_get_report(intf, 3, 2, rep_data, 2);
 266         } while (rep_data[1] != 2 && limit++ < 5);
 267
 268         usb_set_intfdata(intf, wacom);
 269         return 0;
 270
 271 fail2:  usb_buffer_free(dev, 10, wacom_wac->data, wacom->data_dma);
 272 fail1:  input_free_device(input_dev);
 273         kfree(wacom);
 274         kfree(wacom_wac);
 275         return -ENOMEM;
 276 }
 277
 278 static void wacom_disconnect(struct usb_interface *intf)
 279 {
 280         struct wacom *wacom = usb_get_intfdata (intf);
 281
 282         usb_set_intfdata(intf, NULL);
 283         if (wacom) {
 284                 usb_kill_urb(wacom->irq);
 285                 input_unregister_device(wacom->dev);
 286                 usb_free_urb(wacom->irq);
 287                 usb_buffer_free(interface_to_usbdev(intf), 10, wacom->wacom_wac->data, wacom->data_dma);
 288                 kfree(wacom);
 289                 kfree(wacom->wacom_wac);
 290         }
 291 }
 292
 293 static struct usb_driver wacom_driver = {
 294         .name =         "wacom",
 295         .probe =        wacom_probe,
 296         .disconnect =   wacom_disconnect,
 297 };
 298
 299 static int __init wacom_init(void)
 300 {
 301         int result;
 302         wacom_driver.id_table = get_device_table();
 303         result = usb_register(&wacom_driver);
 304         if (result == 0)
 305                 info(DRIVER_VERSION ":" DRIVER_DESC);
 306         return result;
 307 }
 308
 309 static void __exit wacom_exit(void)
 310 {
 311         usb_deregister(&wacom_driver);
 312 }
 313
 314 module_init(wacom_init);
 315 module_exit(wacom_exit);