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                 dbg("%s - urb shutting down with status: %d", __func__, urb->status);
  77                 return;
  78         default:
  79                 dbg("%s - nonzero urb status received: %d", __func__, urb->status);
  80                 goto resubmit;
  81         }
  82
  83         prox = (data[0] & 0x04) >> 2;
  84         input_report_key(dev, BTN_TOOL_PEN, prox);
  85
  86         if (prox) {
  87                 int x = data[1] | (data[2] << 8);
  88                 int y = data[3] | (data[4] << 8);
  89                 /* Pressure should compute the same way for flair and 302 */
  90                 int pressure = data[5] | (data[6] << 8);
  91                 int touch = data[0] & 0x01;
  92                 int stylus = (data[0] & 0x10) >> 4;
  93                 int stylus2 = (data[0] & 0x20) >> 5;
  94                 input_report_abs(dev, ABS_X, x);
  95                 input_report_abs(dev, ABS_Y, y);
  96                 input_report_abs(dev, ABS_PRESSURE, pressure);
  97                 input_report_key(dev, BTN_TOUCH, touch);
  98                 input_report_key(dev, BTN_STYLUS, stylus);
  99                 input_report_key(dev, BTN_STYLUS2, stylus2);
 100         }
 101
 102         /* event termination */
 103         input_sync(dev);
 104
 105 resubmit:
 106         status = usb_submit_urb(urb, GFP_ATOMIC);
 107         if (status)
 108                 err("can't resubmit intr, %s-%s/input0, status %d",
 109                         acecad->usbdev->bus->bus_name, acecad->usbdev->devpath, status);
 110 }
 111
 112 static int usb_acecad_open(struct input_dev *dev)
 113 {
 114         struct usb_acecad *acecad = input_get_drvdata(dev);
 115
 116         acecad->irq->dev = acecad->usbdev;
 117         if (usb_submit_urb(acecad->irq, GFP_KERNEL))
 118                 return -EIO;
 119
 120         return 0;
 121 }
 122
 123 static void usb_acecad_close(struct input_dev *dev)
 124 {
 125         struct usb_acecad *acecad = input_get_drvdata(dev);
 126
 127         usb_kill_urb(acecad->irq);
 128 }
 129
 130 static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_id *id)
 131 {
 132         struct usb_device *dev = interface_to_usbdev(intf);
 133         struct usb_host_interface *interface = intf->cur_altsetting;
 134         struct usb_endpoint_descriptor *endpoint;
 135         struct usb_acecad *acecad;
 136         struct input_dev *input_dev;
 137         int pipe, maxp;
 138         int err;
 139
 140         if (interface->desc.bNumEndpoints != 1)
 141                 return -ENODEV;
 142
 143         endpoint = &interface->endpoint[0].desc;
 144
 145         if (!usb_endpoint_is_int_in(endpoint))
 146                 return -ENODEV;
 147
 148         pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
 149         maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
 150
 151         acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL);
 152         input_dev = input_allocate_device();
 153         if (!acecad || !input_dev) {
 154                 err = -ENOMEM;
 155                 goto fail1;
 156         }
 157
 158         acecad->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &acecad->data_dma);
 159         if (!acecad->data) {
 160                 err= -ENOMEM;
 161                 goto fail1;
 162         }
 163
 164         acecad->irq = usb_alloc_urb(0, GFP_KERNEL);
 165         if (!acecad->irq) {
 166                 err = -ENOMEM;
 167                 goto fail2;
 168         }
 169
 170         acecad->usbdev = dev;
 171         acecad->input = input_dev;
 172
 173         if (dev->manufacturer)
 174                 strlcpy(acecad->name, dev->manufacturer, sizeof(acecad->name));
 175
 176         if (dev->product) {
 177                 if (dev->manufacturer)
 178                         strlcat(acecad->name, " ", sizeof(acecad->name));
 179                 strlcat(acecad->name, dev->product, sizeof(acecad->name));
 180         }
 181
 182         usb_make_path(dev, acecad->phys, sizeof(acecad->phys));
 183         strlcat(acecad->phys, "/input0", sizeof(acecad->phys));
 184
 185         input_dev->name = acecad->name;
 186         input_dev->phys = acecad->phys;
 187         usb_to_input_id(dev, &input_dev->id);
 188         input_dev->dev.parent = &intf->dev;
 189
 190         input_set_drvdata(input_dev, acecad);
 191
 192         input_dev->open = usb_acecad_open;
 193         input_dev->close = usb_acecad_close;
 194
 195         input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
 196         input_dev->keybit[BIT_WORD(BTN_DIGI)] = BIT_MASK(BTN_TOOL_PEN) |
 197                 BIT_MASK(BTN_TOUCH) | BIT_MASK(BTN_STYLUS) |
 198                 BIT_MASK(BTN_STYLUS2);
 199
 200         switch (id->driver_info) {
 201         case 0:
 202                 input_set_abs_params(input_dev, ABS_X, 0, 5000, 4, 0);
 203                 input_set_abs_params(input_dev, ABS_Y, 0, 3750, 4, 0);
 204                 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 512, 0, 0);
 205                 if (!strlen(acecad->name))
 206                         snprintf(acecad->name, sizeof(acecad->name),
 207                                 "USB Acecad Flair Tablet %04x:%04x",
 208                                 le16_to_cpu(dev->descriptor.idVendor),
 209                                 le16_to_cpu(dev->descriptor.idProduct));
 210                 break;
 211
 212         case 1:
 213                 input_set_abs_params(input_dev, ABS_X, 0, 53000, 4, 0);
 214                 input_set_abs_params(input_dev, ABS_Y, 0, 2250, 4, 0);
 215                 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 1024, 0, 0);
 216                 if (!strlen(acecad->name))
 217                         snprintf(acecad->name, sizeof(acecad->name),
 218                                 "USB Acecad 302 Tablet %04x:%04x",
 219                                 le16_to_cpu(dev->descriptor.idVendor),
 220                                 le16_to_cpu(dev->descriptor.idProduct));
 221                 break;
 222         }
 223
 224         usb_fill_int_urb(acecad->irq, dev, pipe,
 225                         acecad->data, maxp > 8 ? 8 : maxp,
 226                         usb_acecad_irq, acecad, endpoint->bInterval);
 227         acecad->irq->transfer_dma = acecad->data_dma;
 228         acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 229
 230         err = input_register_device(acecad->input);
 231         if (err)
 232                 goto fail3;
 233
 234         usb_set_intfdata(intf, acecad);
 235
 236         return 0;
 237
 238  fail3: usb_free_urb(acecad->irq);
 239  fail2: usb_free_coherent(dev, 8, acecad->data, acecad->data_dma);
 240  fail1: input_free_device(input_dev);
 241         kfree(acecad);
 242         return err;
 243 }
 244
 245 static void usb_acecad_disconnect(struct usb_interface *intf)
 246 {
 247         struct usb_acecad *acecad = usb_get_intfdata(intf);
 248
 249         usb_set_intfdata(intf, NULL);
 250
 251         input_unregister_device(acecad->input);
 252         usb_free_urb(acecad->irq);
 253         usb_free_coherent(acecad->usbdev, 8, acecad->data, acecad->data_dma);
 254         kfree(acecad);
 255 }
 256
 257 static struct usb_device_id usb_acecad_id_table [] = {
 258         { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_FLAIR), .driver_info = 0 },
 259         { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_302),   .driver_info = 1 },
 260         { }
 261 };
 262
 263 MODULE_DEVICE_TABLE(usb, usb_acecad_id_table);
 264
 265 static struct usb_driver usb_acecad_driver = {
 266         .name =         "usb_acecad",
 267         .probe =        usb_acecad_probe,
 268         .disconnect =   usb_acecad_disconnect,
 269         .id_table =     usb_acecad_id_table,
 270 };
 271
 272 module_usb_driver(usb_acecad_driver);