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                 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                 dev_err(&dev->dev,
 109                         "can't resubmit intr, %s-%s/input0, status %d\n",
 110                         acecad->usbdev->bus->bus_name,
 111                         acecad->usbdev->devpath, status);
 112 }
 113
 114 static int usb_acecad_open(struct input_dev *dev)
 115 {
 116         struct usb_acecad *acecad = input_get_drvdata(dev);
 117
 118         acecad->irq->dev = acecad->usbdev;
 119         if (usb_submit_urb(acecad->irq, GFP_KERNEL))
 120                 return -EIO;
 121
 122         return 0;
 123 }
 124
 125 static void usb_acecad_close(struct input_dev *dev)
 126 {
 127         struct usb_acecad *acecad = input_get_drvdata(dev);
 128
 129         usb_kill_urb(acecad->irq);
 130 }
 131
 132 static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_id *id)
 133 {
 134         struct usb_device *dev = interface_to_usbdev(intf);
 135         struct usb_host_interface *interface = intf->cur_altsetting;
 136         struct usb_endpoint_descriptor *endpoint;
 137         struct usb_acecad *acecad;
 138         struct input_dev *input_dev;
 139         int pipe, maxp;
 140         int err;
 141
 142         if (interface->desc.bNumEndpoints != 1)
 143                 return -ENODEV;
 144
 145         endpoint = &interface->endpoint[0].desc;
 146
 147         if (!usb_endpoint_is_int_in(endpoint))
 148                 return -ENODEV;
 149
 150         pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
 151         maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
 152
 153         acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL);
 154         input_dev = input_allocate_device();
 155         if (!acecad || !input_dev) {
 156                 err = -ENOMEM;
 157                 goto fail1;
 158         }
 159
 160         acecad->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &acecad->data_dma);
 161         if (!acecad->data) {
 162                 err= -ENOMEM;
 163                 goto fail1;
 164         }
 165
 166         acecad->irq = usb_alloc_urb(0, GFP_KERNEL);
 167         if (!acecad->irq) {
 168                 err = -ENOMEM;
 169                 goto fail2;
 170         }
 171
 172         acecad->usbdev = dev;
 173         acecad->input = input_dev;
 174
 175         if (dev->manufacturer)
 176                 strlcpy(acecad->name, dev->manufacturer, sizeof(acecad->name));
 177
 178         if (dev->product) {
 179                 if (dev->manufacturer)
 180                         strlcat(acecad->name, " ", sizeof(acecad->name));
 181                 strlcat(acecad->name, dev->product, sizeof(acecad->name));
 182         }
 183
 184         usb_make_path(dev, acecad->phys, sizeof(acecad->phys));
 185         strlcat(acecad->phys, "/input0", sizeof(acecad->phys));
 186
 187         input_dev->name = acecad->name;
 188         input_dev->phys = acecad->phys;
 189         usb_to_input_id(dev, &input_dev->id);
 190         input_dev->dev.parent = &intf->dev;
 191
 192         input_set_drvdata(input_dev, acecad);
 193
 194         input_dev->open = usb_acecad_open;
 195         input_dev->close = usb_acecad_close;
 196
 197         input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
 198         input_dev->keybit[BIT_WORD(BTN_DIGI)] = BIT_MASK(BTN_TOOL_PEN) |
 199                 BIT_MASK(BTN_TOUCH) | BIT_MASK(BTN_STYLUS) |
 200                 BIT_MASK(BTN_STYLUS2);
 201
 202         switch (id->driver_info) {
 203         case 0:
 204                 input_set_abs_params(input_dev, ABS_X, 0, 5000, 4, 0);
 205                 input_set_abs_params(input_dev, ABS_Y, 0, 3750, 4, 0);
 206                 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 512, 0, 0);
 207                 if (!strlen(acecad->name))
 208                         snprintf(acecad->name, sizeof(acecad->name),
 209                                 "USB Acecad Flair Tablet %04x:%04x",
 210                                 le16_to_cpu(dev->descriptor.idVendor),
 211                                 le16_to_cpu(dev->descriptor.idProduct));
 212                 break;
 213
 214         case 1:
 215                 input_set_abs_params(input_dev, ABS_X, 0, 53000, 4, 0);
 216                 input_set_abs_params(input_dev, ABS_Y, 0, 2250, 4, 0);
 217                 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 1024, 0, 0);
 218                 if (!strlen(acecad->name))
 219                         snprintf(acecad->name, sizeof(acecad->name),
 220                                 "USB Acecad 302 Tablet %04x:%04x",
 221                                 le16_to_cpu(dev->descriptor.idVendor),
 222                                 le16_to_cpu(dev->descriptor.idProduct));
 223                 break;
 224         }
 225
 226         usb_fill_int_urb(acecad->irq, dev, pipe,
 227                         acecad->data, maxp > 8 ? 8 : maxp,
 228                         usb_acecad_irq, acecad, endpoint->bInterval);
 229         acecad->irq->transfer_dma = acecad->data_dma;
 230         acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 231
 232         err = input_register_device(acecad->input);
 233         if (err)
 234                 goto fail3;
 235
 236         usb_set_intfdata(intf, acecad);
 237
 238         return 0;
 239
 240  fail3: usb_free_urb(acecad->irq);
 241  fail2: usb_free_coherent(dev, 8, acecad->data, acecad->data_dma);
 242  fail1: input_free_device(input_dev);
 243         kfree(acecad);
 244         return err;
 245 }
 246
 247 static void usb_acecad_disconnect(struct usb_interface *intf)
 248 {
 249         struct usb_acecad *acecad = usb_get_intfdata(intf);
 250
 251         usb_set_intfdata(intf, NULL);
 252
 253         input_unregister_device(acecad->input);
 254         usb_free_urb(acecad->irq);
 255         usb_free_coherent(acecad->usbdev, 8, acecad->data, acecad->data_dma);
 256         kfree(acecad);
 257 }
 258
 259 static struct usb_device_id usb_acecad_id_table [] = {
 260         { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_FLAIR), .driver_info = 0 },
 261         { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_302),   .driver_info = 1 },
 262         { }
 263 };
 264
 265 MODULE_DEVICE_TABLE(usb, usb_acecad_id_table);
 266
 267 static struct usb_driver usb_acecad_driver = {
 268         .name =         "usb_acecad",
 269         .probe =        usb_acecad_probe,
 270         .disconnect =   usb_acecad_disconnect,
 271         .id_table =     usb_acecad_id_table,
 272 };
 273
 274 module_usb_driver(usb_acecad_driver);