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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [input/] [tablet/] [acecad.c] - Blame information for rev 65

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Line No. Rev Author Line
1 62 marcus.erl
/*
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"
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#define DRIVER_LICENSE "GPL"
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#define DRIVER_AUTHOR  "Edouard TISSERANT <edouard.tisserant@wanadoo.fr>"
41
 
42
MODULE_AUTHOR(DRIVER_AUTHOR);
43
MODULE_DESCRIPTION(DRIVER_DESC);
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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;
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        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", __FUNCTION__, urb->status);
77
                        return;
78
                default:
79
                        dbg("%s - nonzero urb status received: %d", __FUNCTION__, 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 = -ENOMEM;
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_buffer_alloc(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->absbit[0] = BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) |
197
                BIT_MASK(ABS_PRESSURE);
198
        input_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
199
                BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE);
200
        input_dev->keybit[BIT_WORD(BTN_DIGI)] = BIT_MASK(BTN_TOOL_PEN) |
201
                BIT_MASK(BTN_TOUCH) | BIT_MASK(BTN_STYLUS) |
202
                BIT_MASK(BTN_STYLUS2);
203
 
204
        switch (id->driver_info) {
205
                case 0:
206
                        input_dev->absmax[ABS_X] = 5000;
207
                        input_dev->absmax[ABS_Y] = 3750;
208
                        input_dev->absmax[ABS_PRESSURE] = 512;
209
                        if (!strlen(acecad->name))
210
                                snprintf(acecad->name, sizeof(acecad->name),
211
                                        "USB Acecad Flair Tablet %04x:%04x",
212
                                        le16_to_cpu(dev->descriptor.idVendor),
213
                                        le16_to_cpu(dev->descriptor.idProduct));
214
                        break;
215
                case 1:
216
                        input_dev->absmax[ABS_X] = 3000;
217
                        input_dev->absmax[ABS_Y] = 2250;
218
                        input_dev->absmax[ABS_PRESSURE] = 1024;
219
                        if (!strlen(acecad->name))
220
                                snprintf(acecad->name, sizeof(acecad->name),
221
                                        "USB Acecad 302 Tablet %04x:%04x",
222
                                        le16_to_cpu(dev->descriptor.idVendor),
223
                                        le16_to_cpu(dev->descriptor.idProduct));
224
                        break;
225
        }
226
 
227
        input_dev->absfuzz[ABS_X] = 4;
228
        input_dev->absfuzz[ABS_Y] = 4;
229
 
230
        usb_fill_int_urb(acecad->irq, dev, pipe,
231
                        acecad->data, maxp > 8 ? 8 : maxp,
232
                        usb_acecad_irq, acecad, endpoint->bInterval);
233
        acecad->irq->transfer_dma = acecad->data_dma;
234
        acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
235
 
236
        err = input_register_device(acecad->input);
237
        if (err)
238
                goto fail2;
239
 
240
        usb_set_intfdata(intf, acecad);
241
 
242
        return 0;
243
 
244
 fail2: usb_buffer_free(dev, 8, acecad->data, acecad->data_dma);
245
 fail1: input_free_device(input_dev);
246
        kfree(acecad);
247
        return err;
248
}
249
 
250
static void usb_acecad_disconnect(struct usb_interface *intf)
251
{
252
        struct usb_acecad *acecad = usb_get_intfdata(intf);
253
 
254
        usb_set_intfdata(intf, NULL);
255
        if (acecad) {
256
                usb_kill_urb(acecad->irq);
257
                input_unregister_device(acecad->input);
258
                usb_free_urb(acecad->irq);
259
                usb_buffer_free(interface_to_usbdev(intf), 10, acecad->data, acecad->data_dma);
260
                kfree(acecad);
261
        }
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
static int __init usb_acecad_init(void)
280
{
281
        int result = usb_register(&usb_acecad_driver);
282
        if (result == 0)
283
                info(DRIVER_VERSION ":" DRIVER_DESC);
284
        return result;
285
}
286
 
287
static void __exit usb_acecad_exit(void)
288
{
289
        usb_deregister(&usb_acecad_driver);
290
}
291
 
292
module_init(usb_acecad_init);
293
module_exit(usb_acecad_exit);

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