Pileus Git - ~andy/linux/blob - drivers/input/tablet/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/module.h>
  31 #include <linux/init.h>
  32 #include <linux/usb/input.h>
  33
  34 /*
  35  * Version Information
  36  */
  37 #define DRIVER_VERSION "v3.2"
  38 #define DRIVER_DESC    "USB Acecad Flair tablet driver"
  39 #define DRIVER_LICENSE "GPL"
  40 #define DRIVER_AUTHOR  "Edouard TISSERANT <edouard.tisserant@wanadoo.fr>"
  41
  42 MODULE_AUTHOR(DRIVER_AUTHOR);
  43 MODULE_DESCRIPTION(DRIVER_DESC);
  44 MODULE_LICENSE(DRIVER_LICENSE);
  45
  46 #define USB_VENDOR_ID_ACECAD    0x0460
  47 #define USB_DEVICE_ID_FLAIR     0x0004
  48 #define USB_DEVICE_ID_302       0x0008
  49
  50 struct usb_acecad {
  51         char name[128];
  52         char phys[64];
  53         struct usb_device *usbdev;
  54         struct input_dev *input;
  55         struct urb *irq;
  56
  57         unsigned char *data;
  58         dma_addr_t data_dma;
  59 };
  60
  61 static void usb_acecad_irq(struct urb *urb)
  62 {
  63         struct usb_acecad *acecad = urb->context;
  64         unsigned char *data = acecad->data;
  65         struct input_dev *dev = acecad->input;
  66         int prox, status;
  67
  68         switch (urb->status) {
  69         case 0:
  70                 /* success */
  71                 break;
  72         case -ECONNRESET:
  73         case -ENOENT:
  74         case -ESHUTDOWN:
  75                 /* this urb is terminated, clean up */
  76                 dev_dbg(&dev->dev, "%s - urb shutting down with status: %d\n",
  77                         __func__, urb->status);
  78                 return;
  79         default:
  80                 dev_dbg(&dev->dev, "%s - nonzero urb status received: %d\n",
  81                         __func__, urb->status);
  82                 goto resubmit;
  83         }
  84
  85         prox = (data[0] & 0x04) >> 2;
  86         input_report_key(dev, BTN_TOOL_PEN, prox);
  87
  88         if (prox) {
  89                 int x = data[1] | (data[2] << 8);
  90                 int y = data[3] | (data[4] << 8);
  91                 /* Pressure should compute the same way for flair and 302 */
  92                 int pressure = data[5] | (data[6] << 8);
  93                 int touch = data[0] & 0x01;
  94                 int stylus = (data[0] & 0x10) >> 4;
  95                 int stylus2 = (data[0] & 0x20) >> 5;
  96                 input_report_abs(dev, ABS_X, x);
  97                 input_report_abs(dev, ABS_Y, y);
  98                 input_report_abs(dev, ABS_PRESSURE, pressure);
  99                 input_report_key(dev, BTN_TOUCH, touch);
 100                 input_report_key(dev, BTN_STYLUS, stylus);
 101                 input_report_key(dev, BTN_STYLUS2, stylus2);
 102         }
 103
 104         /* event termination */
 105         input_sync(dev);
 106
 107 resubmit:
 108         status = usb_submit_urb(urb, GFP_ATOMIC);
 109         if (status)
 110                 dev_err(&dev->dev,
 111                         "can't resubmit intr, %s-%s/input0, status %d\n",
 112                         acecad->usbdev->bus->bus_name,
 113                         acecad->usbdev->devpath, status);
 114 }
 115
 116 static int usb_acecad_open(struct input_dev *dev)
 117 {
 118         struct usb_acecad *acecad = input_get_drvdata(dev);
 119
 120         acecad->irq->dev = acecad->usbdev;
 121         if (usb_submit_urb(acecad->irq, GFP_KERNEL))
 122                 return -EIO;
 123
 124         return 0;
 125 }
 126
 127 static void usb_acecad_close(struct input_dev *dev)
 128 {
 129         struct usb_acecad *acecad = input_get_drvdata(dev);
 130
 131         usb_kill_urb(acecad->irq);
 132 }
 133
 134 static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_id *id)
 135 {
 136         struct usb_device *dev = interface_to_usbdev(intf);
 137         struct usb_host_interface *interface = intf->cur_altsetting;
 138         struct usb_endpoint_descriptor *endpoint;
 139         struct usb_acecad *acecad;
 140         struct input_dev *input_dev;
 141         int pipe, maxp;
 142         int err;
 143
 144         if (interface->desc.bNumEndpoints != 1)
 145                 return -ENODEV;
 146
 147         endpoint = &interface->endpoint[0].desc;
 148
 149         if (!usb_endpoint_is_int_in(endpoint))
 150                 return -ENODEV;
 151
 152         pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
 153         maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
 154
 155         acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL);
 156         input_dev = input_allocate_device();
 157         if (!acecad || !input_dev) {
 158                 err = -ENOMEM;
 159                 goto fail1;
 160         }
 161
 162         acecad->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &acecad->data_dma);
 163         if (!acecad->data) {
 164                 err= -ENOMEM;
 165                 goto fail1;
 166         }
 167
 168         acecad->irq = usb_alloc_urb(0, GFP_KERNEL);
 169         if (!acecad->irq) {
 170                 err = -ENOMEM;
 171                 goto fail2;
 172         }
 173
 174         acecad->usbdev = dev;
 175         acecad->input = input_dev;
 176
 177         if (dev->manufacturer)
 178                 strlcpy(acecad->name, dev->manufacturer, sizeof(acecad->name));
 179
 180         if (dev->product) {
 181                 if (dev->manufacturer)
 182                         strlcat(acecad->name, " ", sizeof(acecad->name));
 183                 strlcat(acecad->name, dev->product, sizeof(acecad->name));
 184         }
 185
 186         usb_make_path(dev, acecad->phys, sizeof(acecad->phys));
 187         strlcat(acecad->phys, "/input0", sizeof(acecad->phys));
 188
 189         input_dev->name = acecad->name;
 190         input_dev->phys = acecad->phys;
 191         usb_to_input_id(dev, &input_dev->id);
 192         input_dev->dev.parent = &intf->dev;
 193
 194         input_set_drvdata(input_dev, acecad);
 195
 196         input_dev->open = usb_acecad_open;
 197         input_dev->close = usb_acecad_close;
 198
 199         input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
 200         input_dev->keybit[BIT_WORD(BTN_DIGI)] = BIT_MASK(BTN_TOOL_PEN) |
 201                 BIT_MASK(BTN_TOUCH) | BIT_MASK(BTN_STYLUS) |
 202                 BIT_MASK(BTN_STYLUS2);
 203
 204         switch (id->driver_info) {
 205         case 0:
 206                 input_set_abs_params(input_dev, ABS_X, 0, 5000, 4, 0);
 207                 input_set_abs_params(input_dev, ABS_Y, 0, 3750, 4, 0);
 208                 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 512, 0, 0);
 209                 if (!strlen(acecad->name))
 210                         snprintf(acecad->name, sizeof(acecad->name),
 211                                 "USB Acecad Flair Tablet %04x:%04x",
 212                                 le16_to_cpu(dev->descriptor.idVendor),
 213                                 le16_to_cpu(dev->descriptor.idProduct));
 214                 break;
 215
 216         case 1:
 217                 input_set_abs_params(input_dev, ABS_X, 0, 53000, 4, 0);
 218                 input_set_abs_params(input_dev, ABS_Y, 0, 2250, 4, 0);
 219                 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 1024, 0, 0);
 220                 if (!strlen(acecad->name))
 221                         snprintf(acecad->name, sizeof(acecad->name),
 222                                 "USB Acecad 302 Tablet %04x:%04x",
 223                                 le16_to_cpu(dev->descriptor.idVendor),
 224                                 le16_to_cpu(dev->descriptor.idProduct));
 225                 break;
 226         }
 227
 228         usb_fill_int_urb(acecad->irq, dev, pipe,
 229                         acecad->data, maxp > 8 ? 8 : maxp,
 230                         usb_acecad_irq, acecad, endpoint->bInterval);
 231         acecad->irq->transfer_dma = acecad->data_dma;
 232         acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 233
 234         err = input_register_device(acecad->input);
 235         if (err)
 236                 goto fail3;
 237
 238         usb_set_intfdata(intf, acecad);
 239
 240         return 0;
 241
 242  fail3: usb_free_urb(acecad->irq);
 243  fail2: usb_free_coherent(dev, 8, acecad->data, acecad->data_dma);
 244  fail1: input_free_device(input_dev);
 245         kfree(acecad);
 246         return err;
 247 }
 248
 249 static void usb_acecad_disconnect(struct usb_interface *intf)
 250 {
 251         struct usb_acecad *acecad = usb_get_intfdata(intf);
 252
 253         usb_set_intfdata(intf, NULL);
 254
 255         input_unregister_device(acecad->input);
 256         usb_free_urb(acecad->irq);
 257         usb_free_coherent(acecad->usbdev, 8, acecad->data, acecad->data_dma);
 258         kfree(acecad);
 259 }
 260
 261 static struct usb_device_id usb_acecad_id_table [] = {
 262         { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_FLAIR), .driver_info = 0 },
 263         { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_302),   .driver_info = 1 },
 264         { }
 265 };
 266
 267 MODULE_DEVICE_TABLE(usb, usb_acecad_id_table);
 268
 269 static struct usb_driver usb_acecad_driver = {
 270         .name =         "usb_acecad",
 271         .probe =        usb_acecad_probe,
 272         .disconnect =   usb_acecad_disconnect,
 273         .id_table =     usb_acecad_id_table,
 274 };
 275
 276 module_usb_driver(usb_acecad_driver);