Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
[linux-2.6.git] / 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 fail2;
233
234         usb_set_intfdata(intf, acecad);
235
236         return 0;
237
238  fail2: usb_free_coherent(dev, 8, acecad->data, acecad->data_dma);
239  fail1: input_free_device(input_dev);
240         kfree(acecad);
241         return err;
242 }
243
244 static void usb_acecad_disconnect(struct usb_interface *intf)
245 {
246         struct usb_acecad *acecad = usb_get_intfdata(intf);
247
248         usb_set_intfdata(intf, NULL);
249
250         input_unregister_device(acecad->input);
251         usb_free_urb(acecad->irq);
252         usb_free_coherent(acecad->usbdev, 8, acecad->data, acecad->data_dma);
253         kfree(acecad);
254 }
255
256 static struct usb_device_id usb_acecad_id_table [] = {
257         { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_FLAIR), .driver_info = 0 },
258         { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_302),   .driver_info = 1 },
259         { }
260 };
261
262 MODULE_DEVICE_TABLE(usb, usb_acecad_id_table);
263
264 static struct usb_driver usb_acecad_driver = {
265         .name =         "usb_acecad",
266         .probe =        usb_acecad_probe,
267         .disconnect =   usb_acecad_disconnect,
268         .id_table =     usb_acecad_id_table,
269 };
270
271 static int __init usb_acecad_init(void)
272 {
273         int result = usb_register(&usb_acecad_driver);
274         if (result == 0)
275                 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
276                        DRIVER_DESC "\n");
277         return result;
278 }
279
280 static void __exit usb_acecad_exit(void)
281 {
282         usb_deregister(&usb_acecad_driver);
283 }
284
285 module_init(usb_acecad_init);
286 module_exit(usb_acecad_exit);