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 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 = dev->private;
 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 = dev->private;
 137
 138         usb_kill_urb(wacom->irq);
 139 }
 140
 141 void input_dev_g4(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 142 {
 143         input_dev->evbit[0] |= BIT(EV_MSC);
 144         input_dev->mscbit[0] |= BIT(MSC_SERIAL);
 145         input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_FINGER);
 146         input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_0) | BIT(BTN_4);
 147 }
 148
 149 void input_dev_g(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 150 {
 151         input_dev->evbit[0] |= BIT(EV_REL);
 152         input_dev->relbit[0] |= BIT(REL_WHEEL);
 153         input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
 154         input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_RUBBER) | BIT(BTN_TOOL_MOUSE) | BIT(BTN_STYLUS2);
 155         input_set_abs_params(input_dev, ABS_DISTANCE, 0, wacom_wac->features->distance_max, 0, 0);
 156 }
 157
 158 void input_dev_i3s(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 159 {
 160         input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_FINGER);
 161         input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_0) | BIT(BTN_1) | BIT(BTN_2) | BIT(BTN_3);
 162         input_set_abs_params(input_dev, ABS_RX, 0, 4096, 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_LEFT)] |= BIT(BTN_4) | BIT(BTN_5) | BIT(BTN_6) | BIT(BTN_7);
 168         input_set_abs_params(input_dev, ABS_RY, 0, 4096, 0, 0);
 169 }
 170
 171 void input_dev_i(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 172 {
 173         input_dev->evbit[0] |= BIT(EV_MSC) | BIT(EV_REL);
 174         input_dev->mscbit[0] |= BIT(MSC_SERIAL);
 175         input_dev->relbit[0] |= BIT(REL_WHEEL);
 176         input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE) | BIT(BTN_SIDE) | BIT(BTN_EXTRA);
 177         input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_RUBBER) | BIT(BTN_TOOL_MOUSE) | BIT(BTN_TOOL_BRUSH)
 178                 | BIT(BTN_TOOL_PENCIL) | BIT(BTN_TOOL_AIRBRUSH) | BIT(BTN_TOOL_LENS) | BIT(BTN_STYLUS2);
 179         input_set_abs_params(input_dev, ABS_DISTANCE, 0, wacom_wac->features->distance_max, 0, 0);
 180         input_set_abs_params(input_dev, ABS_WHEEL, 0, 1023, 0, 0);
 181         input_set_abs_params(input_dev, ABS_TILT_X, 0, 127, 0, 0);
 182         input_set_abs_params(input_dev, ABS_TILT_Y, 0, 127, 0, 0);
 183         input_set_abs_params(input_dev, ABS_RZ, -900, 899, 0, 0);
 184         input_set_abs_params(input_dev, ABS_THROTTLE, -1023, 1023, 0, 0);
 185 }
 186
 187 void input_dev_pl(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 188 {
 189         input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_STYLUS2) | BIT(BTN_TOOL_RUBBER);
 190 }
 191
 192 void input_dev_pt(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 193 {
 194         input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_RUBBER);
 195 }
 196
 197 static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *id)
 198 {
 199         struct usb_device *dev = interface_to_usbdev(intf);
 200         struct usb_endpoint_descriptor *endpoint;
 201         struct wacom *wacom;
 202         struct wacom_wac *wacom_wac;
 203         struct input_dev *input_dev;
 204         char rep_data[2], limit = 0;
 205
 206         wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
 207         wacom_wac = kzalloc(sizeof(struct wacom_wac), GFP_KERNEL);
 208         input_dev = input_allocate_device();
 209         if (!wacom || !input_dev || !wacom_wac)
 210                 goto fail1;
 211
 212         wacom_wac->data = usb_buffer_alloc(dev, 10, GFP_KERNEL, &wacom->data_dma);
 213         if (!wacom_wac->data)
 214                 goto fail1;
 215
 216         wacom->irq = usb_alloc_urb(0, GFP_KERNEL);
 217         if (!wacom->irq)
 218                 goto fail2;
 219
 220         wacom->usbdev = dev;
 221         wacom->dev = input_dev;
 222         usb_make_path(dev, wacom->phys, sizeof(wacom->phys));
 223         strlcat(wacom->phys, "/input0", sizeof(wacom->phys));
 224
 225         wacom_wac->features = get_wacom_feature(id);
 226         BUG_ON(wacom_wac->features->pktlen > 10);
 227
 228         input_dev->name = wacom_wac->features->name;
 229         wacom->wacom_wac = wacom_wac;
 230         usb_to_input_id(dev, &input_dev->id);
 231
 232         input_dev->cdev.dev = &intf->dev;
 233         input_dev->private = wacom;
 234         input_dev->open = wacom_open;
 235         input_dev->close = wacom_close;
 236
 237         input_dev->evbit[0] |= BIT(EV_KEY) | BIT(EV_ABS);
 238         input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_PEN) | BIT(BTN_TOUCH) | BIT(BTN_STYLUS);
 239         input_set_abs_params(input_dev, ABS_X, 0, wacom_wac->features->x_max, 4, 0);
 240         input_set_abs_params(input_dev, ABS_Y, 0, wacom_wac->features->y_max, 4, 0);
 241         input_set_abs_params(input_dev, ABS_PRESSURE, 0, wacom_wac->features->pressure_max, 0, 0);
 242         input_dev->absbit[LONG(ABS_MISC)] |= BIT(ABS_MISC);
 243
 244         wacom_init_input_dev(input_dev, wacom_wac);
 245
 246         endpoint = &intf->cur_altsetting->endpoint[0].desc;
 247
 248         usb_fill_int_urb(wacom->irq, dev,
 249                          usb_rcvintpipe(dev, endpoint->bEndpointAddress),
 250                          wacom_wac->data, wacom_wac->features->pktlen,
 251                          wacom_sys_irq, wacom, endpoint->bInterval);
 252         wacom->irq->transfer_dma = wacom->data_dma;
 253         wacom->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 254
 255         input_register_device(wacom->dev);
 256
 257         /* Ask the tablet to report tablet data. Repeat until it succeeds */
 258         do {
 259                 rep_data[0] = 2;
 260                 rep_data[1] = 2;
 261                 usb_set_report(intf, 3, 2, rep_data, 2);
 262                 usb_get_report(intf, 3, 2, rep_data, 2);
 263         } while (rep_data[1] != 2 && limit++ < 5);
 264
 265         usb_set_intfdata(intf, wacom);
 266         return 0;
 267
 268 fail2:  usb_buffer_free(dev, 10, wacom_wac->data, wacom->data_dma);
 269 fail1:  input_free_device(input_dev);
 270         kfree(wacom);
 271         kfree(wacom_wac);
 272         return -ENOMEM;
 273 }
 274
 275 static void wacom_disconnect(struct usb_interface *intf)
 276 {
 277         struct wacom *wacom = usb_get_intfdata (intf);
 278
 279         usb_set_intfdata(intf, NULL);
 280         if (wacom) {
 281                 usb_kill_urb(wacom->irq);
 282                 input_unregister_device(wacom->dev);
 283                 usb_free_urb(wacom->irq);
 284                 usb_buffer_free(interface_to_usbdev(intf), 10, wacom->wacom_wac->data, wacom->data_dma);
 285                 kfree(wacom->wacom_wac);
 286                 kfree(wacom);
 287         }
 288 }
 289
 290 static struct usb_driver wacom_driver = {
 291         .name =         "wacom",
 292         .probe =        wacom_probe,
 293         .disconnect =   wacom_disconnect,
 294 };
 295
 296 static int __init wacom_init(void)
 297 {
 298         int result;
 299         wacom_driver.id_table = get_device_table();
 300         result = usb_register(&wacom_driver);
 301         if (result == 0)
 302                 info(DRIVER_VERSION ":" DRIVER_DESC);
 303         return result;
 304 }
 305
 306 static void __exit wacom_exit(void)
 307 {
 308         usb_deregister(&wacom_driver);
 309 }
 310
 311 module_init(wacom_init);
 312 module_exit(wacom_exit);