Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq
[linux-2.6] / 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 dev;
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->dev;
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         int pipe, maxp;
139         char path[64];
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 = kcalloc(1, sizeof(struct usb_acecad), GFP_KERNEL);
156         if (!acecad)
157                 return -ENOMEM;
158
159         acecad->data = usb_buffer_alloc(dev, 8, SLAB_KERNEL, &acecad->data_dma);
160         if (!acecad->data)
161                 goto fail1;
162
163         acecad->irq = usb_alloc_urb(0, GFP_KERNEL);
164         if (!acecad->irq)
165                 goto fail2;
166
167         if (dev->manufacturer)
168                 strlcpy(acecad->name, dev->manufacturer, sizeof(acecad->name));
169
170         if (dev->product) {
171                 if (dev->manufacturer)
172                         strlcat(acecad->name, " ", sizeof(acecad->name));
173                 strlcat(acecad->name, dev->product, sizeof(acecad->name));
174         }
175
176         usb_make_path(dev, path, sizeof(path));
177         snprintf(acecad->phys, sizeof(acecad->phys), "%s/input0", path);
178
179         acecad->usbdev = dev;
180
181         acecad->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
182         acecad->dev.absbit[0] = BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE);
183         acecad->dev.keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
184         acecad->dev.keybit[LONG(BTN_DIGI)] = BIT(BTN_TOOL_PEN) |BIT(BTN_TOUCH) | BIT(BTN_STYLUS) | BIT(BTN_STYLUS2);
185
186         switch (id->driver_info) {
187                 case 0:
188                         acecad->dev.absmax[ABS_X] = 5000;
189                         acecad->dev.absmax[ABS_Y] = 3750;
190                         acecad->dev.absmax[ABS_PRESSURE] = 512;
191                         if (!strlen(acecad->name))
192                                 snprintf(acecad->name, sizeof(acecad->name),
193                                         "USB Acecad Flair Tablet %04x:%04x",
194                                         dev->descriptor.idVendor, dev->descriptor.idProduct);
195                         break;
196                 case 1:
197                         acecad->dev.absmax[ABS_X] = 3000;
198                         acecad->dev.absmax[ABS_Y] = 2250;
199                         acecad->dev.absmax[ABS_PRESSURE] = 1024;
200                         if (!strlen(acecad->name))
201                                 snprintf(acecad->name, sizeof(acecad->name),
202                                         "USB Acecad 302 Tablet %04x:%04x",
203                                         dev->descriptor.idVendor, dev->descriptor.idProduct);
204                         break;
205         }
206
207         acecad->dev.absfuzz[ABS_X] = 4;
208         acecad->dev.absfuzz[ABS_Y] = 4;
209
210         acecad->dev.private = acecad;
211         acecad->dev.open = usb_acecad_open;
212         acecad->dev.close = usb_acecad_close;
213
214         acecad->dev.name = acecad->name;
215         acecad->dev.phys = acecad->phys;
216         usb_to_input_id(dev, &acecad->dev.id);
217         acecad->dev.dev = &intf->dev;
218
219         usb_fill_int_urb(acecad->irq, dev, pipe,
220                         acecad->data, maxp > 8 ? 8 : maxp,
221                         usb_acecad_irq, acecad, endpoint->bInterval);
222         acecad->irq->transfer_dma = acecad->data_dma;
223         acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
224
225         input_register_device(&acecad->dev);
226
227         printk(KERN_INFO "input: %s with packet size %d on %s\n",
228                 acecad->name, maxp, path);
229
230         usb_set_intfdata(intf, acecad);
231
232         return 0;
233
234  fail2: usb_buffer_free(dev, 8, acecad->data, acecad->data_dma);
235  fail1: kfree(acecad);
236         return -ENOMEM;
237 }
238
239 static void usb_acecad_disconnect(struct usb_interface *intf)
240 {
241         struct usb_acecad *acecad = usb_get_intfdata(intf);
242
243         usb_set_intfdata(intf, NULL);
244         if (acecad) {
245                 usb_kill_urb(acecad->irq);
246                 input_unregister_device(&acecad->dev);
247                 usb_free_urb(acecad->irq);
248                 usb_buffer_free(interface_to_usbdev(intf), 10, acecad->data, acecad->data_dma);
249                 kfree(acecad);
250         }
251 }
252
253 static struct usb_device_id usb_acecad_id_table [] = {
254         { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_FLAIR), .driver_info = 0 },
255         { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_302),   .driver_info = 1 },
256         { }
257 };
258
259 MODULE_DEVICE_TABLE(usb, usb_acecad_id_table);
260
261 static struct usb_driver usb_acecad_driver = {
262         .owner =        THIS_MODULE,
263         .name =         "usb_acecad",
264         .probe =        usb_acecad_probe,
265         .disconnect =   usb_acecad_disconnect,
266         .id_table =     usb_acecad_id_table,
267 };
268
269 static int __init usb_acecad_init(void)
270 {
271         int result = usb_register(&usb_acecad_driver);
272         if (result == 0)
273                 info(DRIVER_VERSION ":" DRIVER_DESC);
274         return result;
275 }
276
277 static void __exit usb_acecad_exit(void)
278 {
279         usb_deregister(&usb_acecad_driver);
280 }
281
282 module_init(usb_acecad_init);
283 module_exit(usb_acecad_exit);