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/usb/input.h>
  32
  33 /*
  34  * Version Information
  35  */
  36 #define DRIVER_VERSION "v3.2"
  37 #define DRIVER_DESC    "USB Acecad Flair tablet driver"
  38 #define DRIVER_LICENSE "GPL"
  39 #define DRIVER_AUTHOR  "Edouard TISSERANT <edouard.tisserant@wanadoo.fr>"
  40
  41 MODULE_AUTHOR(DRIVER_AUTHOR);
  42 MODULE_DESCRIPTION(DRIVER_DESC);
  43 MODULE_LICENSE(DRIVER_LICENSE);
  44
  45 #define USB_VENDOR_ID_ACECAD    0x0460
  46 #define USB_DEVICE_ID_FLAIR     0x0004
  47 #define USB_DEVICE_ID_302       0x0008
  48
  49 struct usb_acecad {
  50         char name[128];
  51         char phys[64];
  52         struct usb_interface *intf;
  53         struct input_dev *input;
  54         struct urb *irq;
  55
  56         unsigned char *data;
  57         dma_addr_t data_dma;
  58 };
  59
  60 static void usb_acecad_irq(struct urb *urb)
  61 {
  62         struct usb_acecad *acecad = urb->context;
  63         unsigned char *data = acecad->data;
  64         struct input_dev *dev = acecad->input;
  65         struct usb_interface *intf = acecad->intf;
  66         struct usb_device *udev = interface_to_usbdev(intf);
  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                 dev_dbg(&intf->dev, "%s - urb shutting down with status: %d\n",
  78                         __func__, urb->status);
  79                 return;
  80         default:
  81                 dev_dbg(&intf->dev, "%s - nonzero urb status received: %d\n",
  82                         __func__, urb->status);
  83                 goto resubmit;
  84         }
  85
  86         prox = (data[0] & 0x04) >> 2;
  87         input_report_key(dev, BTN_TOOL_PEN, prox);
  88
  89         if (prox) {
  90                 int x = data[1] | (data[2] << 8);
  91                 int y = data[3] | (data[4] << 8);
  92                 /* Pressure should compute the same way for flair and 302 */
  93                 int pressure = data[5] | (data[6] << 8);
  94                 int touch = data[0] & 0x01;
  95                 int stylus = (data[0] & 0x10) >> 4;
  96                 int stylus2 = (data[0] & 0x20) >> 5;
  97                 input_report_abs(dev, ABS_X, x);
  98                 input_report_abs(dev, ABS_Y, y);
  99                 input_report_abs(dev, ABS_PRESSURE, pressure);
 100                 input_report_key(dev, BTN_TOUCH, touch);
 101                 input_report_key(dev, BTN_STYLUS, stylus);
 102                 input_report_key(dev, BTN_STYLUS2, stylus2);
 103         }
 104
 105         /* event termination */
 106         input_sync(dev);
 107
 108 resubmit:
 109         status = usb_submit_urb(urb, GFP_ATOMIC);
 110         if (status)
 111                 dev_err(&intf->dev,
 112                         "can't resubmit intr, %s-%s/input0, status %d\n",
 113                         udev->bus->bus_name,
 114                         udev->devpath, status);
 115 }
 116
 117 static int usb_acecad_open(struct input_dev *dev)
 118 {
 119         struct usb_acecad *acecad = input_get_drvdata(dev);
 120
 121         acecad->irq->dev = interface_to_usbdev(acecad->intf);
 122         if (usb_submit_urb(acecad->irq, GFP_KERNEL))
 123                 return -EIO;
 124
 125         return 0;
 126 }
 127
 128 static void usb_acecad_close(struct input_dev *dev)
 129 {
 130         struct usb_acecad *acecad = input_get_drvdata(dev);
 131
 132         usb_kill_urb(acecad->irq);
 133 }
 134
 135 static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_id *id)
 136 {
 137         struct usb_device *dev = interface_to_usbdev(intf);
 138         struct usb_host_interface *interface = intf->cur_altsetting;
 139         struct usb_endpoint_descriptor *endpoint;
 140         struct usb_acecad *acecad;
 141         struct input_dev *input_dev;
 142         int pipe, maxp;
 143         int err;
 144
 145         if (interface->desc.bNumEndpoints != 1)
 146                 return -ENODEV;
 147
 148         endpoint = &interface->endpoint[0].desc;
 149
 150         if (!usb_endpoint_is_int_in(endpoint))
 151                 return -ENODEV;
 152
 153         pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
 154         maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
 155
 156         acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL);
 157         input_dev = input_allocate_device();
 158         if (!acecad || !input_dev) {
 159                 err = -ENOMEM;
 160                 goto fail1;
 161         }
 162
 163         acecad->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &acecad->data_dma);
 164         if (!acecad->data) {
 165                 err= -ENOMEM;
 166                 goto fail1;
 167         }
 168
 169         acecad->irq = usb_alloc_urb(0, GFP_KERNEL);
 170         if (!acecad->irq) {
 171                 err = -ENOMEM;
 172                 goto fail2;
 173         }
 174
 175         acecad->intf = intf;
 176         acecad->input = input_dev;
 177
 178         if (dev->manufacturer)
 179                 strlcpy(acecad->name, dev->manufacturer, sizeof(acecad->name));
 180
 181         if (dev->product) {
 182                 if (dev->manufacturer)
 183                         strlcat(acecad->name, " ", sizeof(acecad->name));
 184                 strlcat(acecad->name, dev->product, sizeof(acecad->name));
 185         }
 186
 187         usb_make_path(dev, acecad->phys, sizeof(acecad->phys));
 188         strlcat(acecad->phys, "/input0", sizeof(acecad->phys));
 189
 190         input_dev->name = acecad->name;
 191         input_dev->phys = acecad->phys;
 192         usb_to_input_id(dev, &input_dev->id);
 193         input_dev->dev.parent = &intf->dev;
 194
 195         input_set_drvdata(input_dev, acecad);
 196
 197         input_dev->open = usb_acecad_open;
 198         input_dev->close = usb_acecad_close;
 199
 200         input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
 201         input_dev->keybit[BIT_WORD(BTN_DIGI)] = BIT_MASK(BTN_TOOL_PEN) |
 202                 BIT_MASK(BTN_TOUCH) | BIT_MASK(BTN_STYLUS) |
 203                 BIT_MASK(BTN_STYLUS2);
 204
 205         switch (id->driver_info) {
 206         case 0:
 207                 input_set_abs_params(input_dev, ABS_X, 0, 5000, 4, 0);
 208                 input_set_abs_params(input_dev, ABS_Y, 0, 3750, 4, 0);
 209                 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 512, 0, 0);
 210                 if (!strlen(acecad->name))
 211                         snprintf(acecad->name, sizeof(acecad->name),
 212                                 "USB Acecad Flair Tablet %04x:%04x",
 213                                 le16_to_cpu(dev->descriptor.idVendor),
 214                                 le16_to_cpu(dev->descriptor.idProduct));
 215                 break;
 216
 217         case 1:
 218                 input_set_abs_params(input_dev, ABS_X, 0, 53000, 4, 0);
 219                 input_set_abs_params(input_dev, ABS_Y, 0, 2250, 4, 0);
 220                 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 1024, 0, 0);
 221                 if (!strlen(acecad->name))
 222                         snprintf(acecad->name, sizeof(acecad->name),
 223                                 "USB Acecad 302 Tablet %04x:%04x",
 224                                 le16_to_cpu(dev->descriptor.idVendor),
 225                                 le16_to_cpu(dev->descriptor.idProduct));
 226                 break;
 227         }
 228
 229         usb_fill_int_urb(acecad->irq, dev, pipe,
 230                         acecad->data, maxp > 8 ? 8 : maxp,
 231                         usb_acecad_irq, acecad, endpoint->bInterval);
 232         acecad->irq->transfer_dma = acecad->data_dma;
 233         acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 234
 235         err = input_register_device(acecad->input);
 236         if (err)
 237                 goto fail3;
 238
 239         usb_set_intfdata(intf, acecad);
 240
 241         return 0;
 242
 243  fail3: usb_free_urb(acecad->irq);
 244  fail2: usb_free_coherent(dev, 8, acecad->data, acecad->data_dma);
 245  fail1: input_free_device(input_dev);
 246         kfree(acecad);
 247         return err;
 248 }
 249
 250 static void usb_acecad_disconnect(struct usb_interface *intf)
 251 {
 252         struct usb_acecad *acecad = usb_get_intfdata(intf);
 253         struct usb_device *udev = interface_to_usbdev(intf);
 254
 255         usb_set_intfdata(intf, NULL);
 256
 257         input_unregister_device(acecad->input);
 258         usb_free_urb(acecad->irq);
 259         usb_free_coherent(udev, 8, acecad->data, acecad->data_dma);
 260         kfree(acecad);
 261 }
 262
 263 static const struct usb_device_id usb_acecad_id_table[] = {
 264         { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_FLAIR), .driver_info = 0 },
 265         { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_302),   .driver_info = 1 },
 266         { }
 267 };
 268
 269 MODULE_DEVICE_TABLE(usb, usb_acecad_id_table);
 270
 271 static struct usb_driver usb_acecad_driver = {
 272         .name =         "usb_acecad",
 273         .probe =        usb_acecad_probe,
 274         .disconnect =   usb_acecad_disconnect,
 275         .id_table =     usb_acecad_id_table,
 276 };
 277
 278 module_usb_driver(usb_acecad_driver);