err.no Git - linux-2.6/blob - drivers/usb/input/acecad.c

   1 /*
   2  *  Copyright (c) 2001-2005 Edouard TISSERANT   <edouard.tisserant@wanadoo.fr>
   3  *  Copyright (c) 2004-2005 Stephane VOLTZ      <svoltz@numericable.fr>
   4  *
   5  *  USB Acecad "Acecad Flair" tablet support
   6  *
   7  *  Changelog:
   8  *      v3.2 - Added sysfs support
   9  */
  10
  11 /*
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  25  *
  26  */
  27
  28 #include <linux/kernel.h>
  29 #include <linux/slab.h>
  30 #include <linux/input.h>
  31 #include <linux/module.h>
  32 #include <linux/init.h>
  33 #include <linux/usb.h>
  34
  35 /*
  36  * Version Information
  37  */
  38 #define DRIVER_VERSION "v3.2"
  39 #define DRIVER_DESC    "USB Acecad Flair tablet driver"
  40 #define DRIVER_LICENSE "GPL"
  41 #define DRIVER_AUTHOR  "Edouard TISSERANT <edouard.tisserant@wanadoo.fr>"
  42
  43 MODULE_AUTHOR(DRIVER_AUTHOR);
  44 MODULE_DESCRIPTION(DRIVER_DESC);
  45 MODULE_LICENSE(DRIVER_LICENSE);
  46
  47 #define USB_VENDOR_ID_ACECAD    0x0460
  48 #define USB_DEVICE_ID_FLAIR     0x0004
  49 #define USB_DEVICE_ID_302       0x0008
  50
  51 struct usb_acecad {
  52         char name[128];
  53         char phys[64];
  54         struct usb_device *usbdev;
  55         struct input_dev dev;
  56         struct urb *irq;
  57
  58         signed char *data;
  59         dma_addr_t data_dma;
  60 };
  61
  62 static void usb_acecad_irq(struct urb *urb, struct pt_regs *regs)
  63 {
  64         struct usb_acecad *acecad = urb->context;
  65         unsigned char *data = acecad->data;
  66         struct input_dev *dev = &acecad->dev;
  67         int prox, status;
  68
  69         switch (urb->status) {
  70                 case 0:
  71                         /* success */
  72                         break;
  73                 case -ECONNRESET:
  74                 case -ENOENT:
  75                 case -ESHUTDOWN:
  76                         /* this urb is terminated, clean up */
  77                         dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
  78                         return;
  79                 default:
  80                         dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
  81                         goto resubmit;
  82         }
  83
  84         prox = (data[0] & 0x04) >> 2;
  85         input_report_key(dev, BTN_TOOL_PEN, prox);
  86
  87         if (prox) {
  88                 int x = data[1] | (data[2] << 8);
  89                 int y = data[3] | (data[4] << 8);
  90                 /*Pressure should compute the same way for flair and 302*/
  91                 int pressure = data[5] | ((int)data[6] << 8);
  92                 int touch = data[0] & 0x01;
  93                 int stylus = (data[0] & 0x10) >> 4;
  94                 int stylus2 = (data[0] & 0x20) >> 5;
  95                 input_report_abs(dev, ABS_X, x);
  96                 input_report_abs(dev, ABS_Y, y);
  97                 input_report_abs(dev, ABS_PRESSURE, pressure);
  98                 input_report_key(dev, BTN_TOUCH, touch);
  99                 input_report_key(dev, BTN_STYLUS, stylus);
 100                 input_report_key(dev, BTN_STYLUS2, stylus2);
 101         }
 102
 103         /* event termination */
 104         input_sync(dev);
 105
 106 resubmit:
 107         status = usb_submit_urb (urb, GFP_ATOMIC);
 108         if (status)
 109                 err ("can't resubmit intr, %s-%s/input0, status %d",
 110                         acecad->usbdev->bus->bus_name, acecad->usbdev->devpath, status);
 111 }
 112
 113 static int usb_acecad_open(struct input_dev *dev)
 114 {
 115         struct usb_acecad *acecad = dev->private;
 116
 117         acecad->irq->dev = acecad->usbdev;
 118         if (usb_submit_urb(acecad->irq, GFP_KERNEL))
 119                 return -EIO;
 120
 121         return 0;
 122 }
 123
 124 static void usb_acecad_close(struct input_dev *dev)
 125 {
 126         struct usb_acecad *acecad = dev->private;
 127
 128         usb_kill_urb(acecad->irq);
 129 }
 130
 131 static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_id *id)
 132 {
 133         struct usb_device *dev = interface_to_usbdev(intf);
 134         struct usb_host_interface *interface = intf->cur_altsetting;
 135         struct usb_endpoint_descriptor *endpoint;
 136         struct usb_acecad *acecad;
 137         int pipe, maxp;
 138         char path[64];
 139
 140         if (interface->desc.bNumEndpoints != 1)
 141                 return -ENODEV;
 142
 143         endpoint = &interface->endpoint[0].desc;
 144
 145         if (!(endpoint->bEndpointAddress & 0x80))
 146                 return -ENODEV;
 147
 148         if ((endpoint->bmAttributes & 3) != 3)
 149                 return -ENODEV;
 150
 151         pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
 152         maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
 153
 154         acecad = kcalloc(1, sizeof(struct usb_acecad), GFP_KERNEL);
 155         if (!acecad)
 156                 return -ENOMEM;
 157
 158         acecad->data = usb_buffer_alloc(dev, 8, SLAB_KERNEL, &acecad->data_dma);
 159         if (!acecad->data)
 160                 goto fail1;
 161
 162         acecad->irq = usb_alloc_urb(0, GFP_KERNEL);
 163         if (!acecad->irq)
 164                 goto fail2;
 165
 166         if (dev->manufacturer)
 167                 strlcpy(acecad->name, dev->manufacturer, sizeof(acecad->name));
 168
 169         if (dev->product) {
 170                 if (dev->manufacturer)
 171                         strlcat(acecad->name, " ", sizeof(acecad->name));
 172                 strlcat(acecad->name, dev->product, sizeof(acecad->name));
 173         }
 174
 175         usb_make_path(dev, path, sizeof(path));
 176         snprintf(acecad->phys, sizeof(acecad->phys), "%s/input0", path);
 177
 178         acecad->usbdev = dev;
 179
 180         acecad->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
 181         acecad->dev.absbit[0] = BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE);
 182         acecad->dev.keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
 183         acecad->dev.keybit[LONG(BTN_DIGI)] = BIT(BTN_TOOL_PEN) |BIT(BTN_TOUCH) | BIT(BTN_STYLUS) | BIT(BTN_STYLUS2);
 184
 185         switch (id->driver_info) {
 186                 case 0:
 187                         acecad->dev.absmax[ABS_X] = 5000;
 188                         acecad->dev.absmax[ABS_Y] = 3750;
 189                         acecad->dev.absmax[ABS_PRESSURE] = 512;
 190                         if (!strlen(acecad->name))
 191                                 snprintf(acecad->name, sizeof(acecad->name),
 192                                         "USB Acecad Flair Tablet %04x:%04x",
 193                                         dev->descriptor.idVendor, dev->descriptor.idProduct);
 194                         break;
 195                 case 1:
 196                         acecad->dev.absmax[ABS_X] = 3000;
 197                         acecad->dev.absmax[ABS_Y] = 2250;
 198                         acecad->dev.absmax[ABS_PRESSURE] = 1024;
 199                         if (!strlen(acecad->name))
 200                                 snprintf(acecad->name, sizeof(acecad->name),
 201                                         "USB Acecad 302 Tablet %04x:%04x",
 202                                         dev->descriptor.idVendor, dev->descriptor.idProduct);
 203                         break;
 204         }
 205
 206         acecad->dev.absfuzz[ABS_X] = 4;
 207         acecad->dev.absfuzz[ABS_Y] = 4;
 208
 209         acecad->dev.private = acecad;
 210         acecad->dev.open = usb_acecad_open;
 211         acecad->dev.close = usb_acecad_close;
 212
 213         acecad->dev.name = acecad->name;
 214         acecad->dev.phys = acecad->phys;
 215         acecad->dev.id.bustype = BUS_USB;
 216         acecad->dev.id.vendor = le16_to_cpu(dev->descriptor.idVendor);
 217         acecad->dev.id.product = le16_to_cpu(dev->descriptor.idProduct);
 218         acecad->dev.id.version = le16_to_cpu(dev->descriptor.bcdDevice);
 219         acecad->dev.dev = &intf->dev;
 220
 221         usb_fill_int_urb(acecad->irq, dev, pipe,
 222                         acecad->data, maxp > 8 ? 8 : maxp,
 223                         usb_acecad_irq, acecad, endpoint->bInterval);
 224         acecad->irq->transfer_dma = acecad->data_dma;
 225         acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 226
 227         input_register_device(&acecad->dev);
 228
 229         printk(KERN_INFO "input: %s with packet size %d on %s\n",
 230                 acecad->name, maxp, path);
 231
 232         usb_set_intfdata(intf, acecad);
 233
 234         return 0;
 235
 236  fail2: usb_buffer_free(dev, 8, acecad->data, acecad->data_dma);
 237  fail1: kfree(acecad);
 238         return -ENOMEM;
 239 }
 240
 241 static void usb_acecad_disconnect(struct usb_interface *intf)
 242 {
 243         struct usb_acecad *acecad = usb_get_intfdata(intf);
 244
 245         usb_set_intfdata(intf, NULL);
 246         if (acecad) {
 247                 usb_kill_urb(acecad->irq);
 248                 input_unregister_device(&acecad->dev);
 249                 usb_free_urb(acecad->irq);
 250                 usb_buffer_free(interface_to_usbdev(intf), 10, acecad->data, acecad->data_dma);
 251                 kfree(acecad);
 252         }
 253 }
 254
 255 static struct usb_device_id usb_acecad_id_table [] = {
 256         { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_FLAIR), .driver_info = 0 },
 257         { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_302),   .driver_info = 1 },
 258         { }
 259 };
 260
 261 MODULE_DEVICE_TABLE(usb, usb_acecad_id_table);
 262
 263 static struct usb_driver usb_acecad_driver = {
 264         .owner =        THIS_MODULE,
 265         .name =         "usb_acecad",
 266         .probe =        usb_acecad_probe,
 267         .disconnect =   usb_acecad_disconnect,
 268         .id_table =     usb_acecad_id_table,
 269 };
 270
 271 static int __init usb_acecad_init(void)
 272 {
 273         int result = usb_register(&usb_acecad_driver);
 274         if (result == 0)
 275                 info(DRIVER_VERSION ":" DRIVER_DESC);
 276         return result;
 277 }
 278
 279 static void __exit usb_acecad_exit(void)
 280 {
 281         usb_deregister(&usb_acecad_driver);
 282 }
 283
 284 module_init(usb_acecad_init);
 285 module_exit(usb_acecad_exit);