drivers/usb/input/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/input.h>
  31 #include <linux/module.h>
  32 #include <linux/init.h>
  33 #include <linux/usb.h>
  34 #include <linux/usb_input.h>
  35
  36 /*
  37  * Version Information
  38  */
  39 #define DRIVER_VERSION "v3.2"
  40 #define DRIVER_DESC    "USB Acecad Flair tablet driver"
  41 #define DRIVER_LICENSE "GPL"
  42 #define DRIVER_AUTHOR  "Edouard TISSERANT <edouard.tisserant@wanadoo.fr>"
  43
  44 MODULE_AUTHOR(DRIVER_AUTHOR);
  45 MODULE_DESCRIPTION(DRIVER_DESC);
  46 MODULE_LICENSE(DRIVER_LICENSE);
  47
  48 #define USB_VENDOR_ID_ACECAD    0x0460
  49 #define USB_DEVICE_ID_FLAIR     0x0004
  50 #define USB_DEVICE_ID_302       0x0008
  51
  52 struct usb_acecad {
  53         char name[128];
  54         char phys[64];
  55         struct usb_device *usbdev;
  56         struct input_dev *input;
  57         struct urb *irq;
  58
  59         signed char *data;
  60         dma_addr_t data_dma;
  61 };
  62
  63 static void usb_acecad_irq(struct urb *urb, struct pt_regs *regs)
  64 {
  65         struct usb_acecad *acecad = urb->context;
  66         unsigned char *data = acecad->data;
  67         struct input_dev *dev = acecad->input;
  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                         dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
  79                         return;
  80                 default:
  81                         dbg("%s - nonzero urb status received: %d", __FUNCTION__, 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                 err("can't resubmit intr, %s-%s/input0, status %d",
 111                         acecad->usbdev->bus->bus_name, acecad->usbdev->devpath, status);
 112 }
 113
 114 static int usb_acecad_open(struct input_dev *dev)
 115 {
 116         struct usb_acecad *acecad = dev->private;
 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 = dev->private;
 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
 141         if (interface->desc.bNumEndpoints != 1)
 142                 return -ENODEV;
 143
 144         endpoint = &interface->endpoint[0].desc;
 145
 146         if (!(endpoint->bEndpointAddress & 0x80))
 147                 return -ENODEV;
 148
 149         if ((endpoint->bmAttributes & 3) != 3)
 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                 goto fail1;
 159
 160         acecad->data = usb_buffer_alloc(dev, 8, SLAB_KERNEL, &acecad->data_dma);
 161         if (!acecad->data)
 162                 goto fail1;
 163
 164         acecad->irq = usb_alloc_urb(0, GFP_KERNEL);
 165         if (!acecad->irq)
 166                 goto fail2;
 167
 168         acecad->usbdev = dev;
 169         acecad->input = input_dev;
 170
 171         if (dev->manufacturer)
 172                 strlcpy(acecad->name, dev->manufacturer, sizeof(acecad->name));
 173
 174         if (dev->product) {
 175                 if (dev->manufacturer)
 176                         strlcat(acecad->name, " ", sizeof(acecad->name));
 177                 strlcat(acecad->name, dev->product, sizeof(acecad->name));
 178         }
 179
 180         usb_make_path(dev, acecad->phys, sizeof(acecad->phys));
 181         strlcat(acecad->phys, "/input0", sizeof(acecad->phys));
 182
 183         input_dev->name = acecad->name;
 184         input_dev->phys = acecad->phys;
 185         usb_to_input_id(dev, &input_dev->id);
 186         input_dev->cdev.dev = &intf->dev;
 187         input_dev->private = acecad;
 188
 189         input_dev->open = usb_acecad_open;
 190         input_dev->close = usb_acecad_close;
 191
 192         input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
 193         input_dev->absbit[0] = BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE);
 194         input_dev->keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
 195         input_dev->keybit[LONG(BTN_DIGI)] = BIT(BTN_TOOL_PEN) |BIT(BTN_TOUCH) | BIT(BTN_STYLUS) | BIT(BTN_STYLUS2);
 196
 197         switch (id->driver_info) {
 198                 case 0:
 199                         input_dev->absmax[ABS_X] = 5000;
 200                         input_dev->absmax[ABS_Y] = 3750;
 201                         input_dev->absmax[ABS_PRESSURE] = 512;
 202                         if (!strlen(acecad->name))
 203                                 snprintf(acecad->name, sizeof(acecad->name),
 204                                         "USB Acecad Flair Tablet %04x:%04x",
 205                                         le16_to_cpu(dev->descriptor.idVendor),
 206                                         le16_to_cpu(dev->descriptor.idProduct));
 207                         break;
 208                 case 1:
 209                         input_dev->absmax[ABS_X] = 3000;
 210                         input_dev->absmax[ABS_Y] = 2250;
 211                         input_dev->absmax[ABS_PRESSURE] = 1024;
 212                         if (!strlen(acecad->name))
 213                                 snprintf(acecad->name, sizeof(acecad->name),
 214                                         "USB Acecad 302 Tablet %04x:%04x",
 215                                         le16_to_cpu(dev->descriptor.idVendor),
 216                                         le16_to_cpu(dev->descriptor.idProduct));
 217                         break;
 218         }
 219
 220         input_dev->absfuzz[ABS_X] = 4;
 221         input_dev->absfuzz[ABS_Y] = 4;
 222
 223         usb_fill_int_urb(acecad->irq, dev, pipe,
 224                         acecad->data, maxp > 8 ? 8 : maxp,
 225                         usb_acecad_irq, acecad, endpoint->bInterval);
 226         acecad->irq->transfer_dma = acecad->data_dma;
 227         acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 228
 229         input_register_device(acecad->input);
 230
 231         usb_set_intfdata(intf, acecad);
 232
 233         return 0;
 234
 235  fail2: usb_buffer_free(dev, 8, acecad->data, acecad->data_dma);
 236  fail1: input_free_device(input_dev);
 237         kfree(acecad);
 238         return -ENOMEM;
 239 }
 240
 241 static void usb_acecad_disconnect(struct usb_interface *intf)
 242 {
 243         struct usb_acecad *acecad = usb_get_intfdata(intf);
 244
 245         usb_set_intfdata(intf, NULL);
 246         if (acecad) {
 247                 usb_kill_urb(acecad->irq);
 248                 input_unregister_device(acecad->input);
 249                 usb_free_urb(acecad->irq);
 250                 usb_buffer_free(interface_to_usbdev(intf), 10, acecad->data, acecad->data_dma);
 251                 kfree(acecad);
 252         }
 253 }
 254
 255 static struct usb_device_id usb_acecad_id_table [] = {
 256         { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_FLAIR), .driver_info = 0 },
 257         { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_302),   .driver_info = 1 },
 258         { }
 259 };
 260
 261 MODULE_DEVICE_TABLE(usb, usb_acecad_id_table);
 262
 263 static struct usb_driver usb_acecad_driver = {
 264         .name =         "usb_acecad",
 265         .probe =        usb_acecad_probe,
 266         .disconnect =   usb_acecad_disconnect,
 267         .id_table =     usb_acecad_id_table,
 268 };
 269
 270 static int __init usb_acecad_init(void)
 271 {
 272         int result = usb_register(&usb_acecad_driver);
 273         if (result == 0)
 274                 info(DRIVER_VERSION ":" DRIVER_DESC);
 275         return result;
 276 }
 277
 278 static void __exit usb_acecad_exit(void)
 279 {
 280         usb_deregister(&usb_acecad_driver);
 281 }
 282
 283 module_init(usb_acecad_init);
 284 module_exit(usb_acecad_exit);