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 usb_interface *intf;
  55         struct input_dev *input;
  56         struct urb *irq;
  57
  58         unsigned char *data;
  59         dma_addr_t data_dma;
  60 };
  61
  62 static void usb_acecad_irq(struct urb *urb)
  63 {
  64         struct usb_acecad *acecad = urb->context;
  65         unsigned char *data = acecad->data;
  66         struct input_dev *dev = acecad->input;
  67         struct usb_interface *intf = acecad->intf;
  68         int prox, status;
  69
  70         switch (urb->status) {
  71         case 0:
  72                 /* success */
  73                 break;
  74         case -ECONNRESET:
  75         case -ENOENT:
  76         case -ESHUTDOWN:
  77                 /* this urb is terminated, clean up */
  78                 dev_dbg(&intf->dev, "%s - urb shutting down with status: %d\n",
  79                         __func__, urb->status);
  80                 return;
  81         default:
  82                 dev_dbg(&intf->dev, "%s - nonzero urb status received: %d\n",
  83                         __func__, urb->status);
  84                 goto resubmit;
  85         }
  86
  87         prox = (data[0] & 0x04) >> 2;
  88         input_report_key(dev, BTN_TOOL_PEN, prox);
  89
  90         if (prox) {
  91                 int x = data[1] | (data[2] << 8);
  92                 int y = data[3] | (data[4] << 8);
  93                 /* Pressure should compute the same way for flair and 302 */
  94                 int pressure = data[5] | (data[6] << 8);
  95                 int touch = data[0] & 0x01;
  96                 int stylus = (data[0] & 0x10) >> 4;
  97                 int stylus2 = (data[0] & 0x20) >> 5;
  98                 input_report_abs(dev, ABS_X, x);
  99                 input_report_abs(dev, ABS_Y, y);
 100                 input_report_abs(dev, ABS_PRESSURE, pressure);
 101                 input_report_key(dev, BTN_TOUCH, touch);
 102                 input_report_key(dev, BTN_STYLUS, stylus);
 103                 input_report_key(dev, BTN_STYLUS2, stylus2);
 104         }
 105
 106         /* event termination */
 107         input_sync(dev);
 108
 109 resubmit:
 110         status = usb_submit_urb(urb, GFP_ATOMIC);
 111         if (status)
 112                 dev_err(&intf->dev,
 113                         "can't resubmit intr, %s-%s/input0, status %d\n",
 114                         acecad->usbdev->bus->bus_name,
 115                         acecad->usbdev->devpath, status);
 116 }
 117
 118 static int usb_acecad_open(struct input_dev *dev)
 119 {
 120         struct usb_acecad *acecad = input_get_drvdata(dev);
 121
 122         acecad->irq->dev = acecad->usbdev;
 123         if (usb_submit_urb(acecad->irq, GFP_KERNEL))
 124                 return -EIO;
 125
 126         return 0;
 127 }
 128
 129 static void usb_acecad_close(struct input_dev *dev)
 130 {
 131         struct usb_acecad *acecad = input_get_drvdata(dev);
 132
 133         usb_kill_urb(acecad->irq);
 134 }
 135
 136 static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_id *id)
 137 {
 138         struct usb_device *dev = interface_to_usbdev(intf);
 139         struct usb_host_interface *interface = intf->cur_altsetting;
 140         struct usb_endpoint_descriptor *endpoint;
 141         struct usb_acecad *acecad;
 142         struct input_dev *input_dev;
 143         int pipe, maxp;
 144         int err;
 145
 146         if (interface->desc.bNumEndpoints != 1)
 147                 return -ENODEV;
 148
 149         endpoint = &interface->endpoint[0].desc;
 150
 151         if (!usb_endpoint_is_int_in(endpoint))
 152                 return -ENODEV;
 153
 154         pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
 155         maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
 156
 157         acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL);
 158         input_dev = input_allocate_device();
 159         if (!acecad || !input_dev) {
 160                 err = -ENOMEM;
 161                 goto fail1;
 162         }
 163
 164         acecad->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &acecad->data_dma);
 165         if (!acecad->data) {
 166                 err= -ENOMEM;
 167                 goto fail1;
 168         }
 169
 170         acecad->irq = usb_alloc_urb(0, GFP_KERNEL);
 171         if (!acecad->irq) {
 172                 err = -ENOMEM;
 173                 goto fail2;
 174         }
 175
 176         acecad->usbdev = dev;
 177         acecad->intf = intf;
 178         acecad->input = input_dev;
 179
 180         if (dev->manufacturer)
 181                 strlcpy(acecad->name, dev->manufacturer, sizeof(acecad->name));
 182
 183         if (dev->product) {
 184                 if (dev->manufacturer)
 185                         strlcat(acecad->name, " ", sizeof(acecad->name));
 186                 strlcat(acecad->name, dev->product, sizeof(acecad->name));
 187         }
 188
 189         usb_make_path(dev, acecad->phys, sizeof(acecad->phys));
 190         strlcat(acecad->phys, "/input0", sizeof(acecad->phys));
 191
 192         input_dev->name = acecad->name;
 193         input_dev->phys = acecad->phys;
 194         usb_to_input_id(dev, &input_dev->id);
 195         input_dev->dev.parent = &intf->dev;
 196
 197         input_set_drvdata(input_dev, acecad);
 198
 199         input_dev->open = usb_acecad_open;
 200         input_dev->close = usb_acecad_close;
 201
 202         input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
 203         input_dev->keybit[BIT_WORD(BTN_DIGI)] = BIT_MASK(BTN_TOOL_PEN) |
 204                 BIT_MASK(BTN_TOUCH) | BIT_MASK(BTN_STYLUS) |
 205                 BIT_MASK(BTN_STYLUS2);
 206
 207         switch (id->driver_info) {
 208         case 0:
 209                 input_set_abs_params(input_dev, ABS_X, 0, 5000, 4, 0);
 210                 input_set_abs_params(input_dev, ABS_Y, 0, 3750, 4, 0);
 211                 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 512, 0, 0);
 212                 if (!strlen(acecad->name))
 213                         snprintf(acecad->name, sizeof(acecad->name),
 214                                 "USB Acecad Flair Tablet %04x:%04x",
 215                                 le16_to_cpu(dev->descriptor.idVendor),
 216                                 le16_to_cpu(dev->descriptor.idProduct));
 217                 break;
 218
 219         case 1:
 220                 input_set_abs_params(input_dev, ABS_X, 0, 53000, 4, 0);
 221                 input_set_abs_params(input_dev, ABS_Y, 0, 2250, 4, 0);
 222                 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 1024, 0, 0);
 223                 if (!strlen(acecad->name))
 224                         snprintf(acecad->name, sizeof(acecad->name),
 225                                 "USB Acecad 302 Tablet %04x:%04x",
 226                                 le16_to_cpu(dev->descriptor.idVendor),
 227                                 le16_to_cpu(dev->descriptor.idProduct));
 228                 break;
 229         }
 230
 231         usb_fill_int_urb(acecad->irq, dev, pipe,
 232                         acecad->data, maxp > 8 ? 8 : maxp,
 233                         usb_acecad_irq, acecad, endpoint->bInterval);
 234         acecad->irq->transfer_dma = acecad->data_dma;
 235         acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 236
 237         err = input_register_device(acecad->input);
 238         if (err)
 239                 goto fail3;
 240
 241         usb_set_intfdata(intf, acecad);
 242
 243         return 0;
 244
 245  fail3: usb_free_urb(acecad->irq);
 246  fail2: usb_free_coherent(dev, 8, acecad->data, acecad->data_dma);
 247  fail1: input_free_device(input_dev);
 248         kfree(acecad);
 249         return err;
 250 }
 251
 252 static void usb_acecad_disconnect(struct usb_interface *intf)
 253 {
 254         struct usb_acecad *acecad = usb_get_intfdata(intf);
 255
 256         usb_set_intfdata(intf, NULL);
 257
 258         input_unregister_device(acecad->input);
 259         usb_free_urb(acecad->irq);
 260         usb_free_coherent(acecad->usbdev, 8, acecad->data, acecad->data_dma);
 261         kfree(acecad);
 262 }
 263
 264 static struct usb_device_id usb_acecad_id_table [] = {
 265         { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_FLAIR), .driver_info = 0 },
 266         { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_302),   .driver_info = 1 },
 267         { }
 268 };
 269
 270 MODULE_DEVICE_TABLE(usb, usb_acecad_id_table);
 271
 272 static struct usb_driver usb_acecad_driver = {
 273         .name =         "usb_acecad",
 274         .probe =        usb_acecad_probe,
 275         .disconnect =   usb_acecad_disconnect,
 276         .id_table =     usb_acecad_id_table,
 277 };
 278
 279 module_usb_driver(usb_acecad_driver);