summaryrefslogtreecommitdiff
path: root/drivers/usb/input/acecad.c
blob: a32558b4048e5a98b0c698e18dd12abac43500eb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
/*
 *  Copyright (c) 2001-2005 Edouard TISSERANT   <edouard.tisserant@wanadoo.fr>
 *  Copyright (c) 2004-2005 Stephane VOLTZ      <svoltz@numericable.fr>
 *
 *  USB Acecad "Acecad Flair" tablet support
 *
 *  Changelog:
 *      v3.2 - Added sysfs support
 */

/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/input.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/usb.h>
#include <linux/usb_input.h>

/*
 * Version Information
 */
#define DRIVER_VERSION "v3.2"
#define DRIVER_DESC    "USB Acecad Flair tablet driver"
#define DRIVER_LICENSE "GPL"
#define DRIVER_AUTHOR  "Edouard TISSERANT <edouard.tisserant@wanadoo.fr>"

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE(DRIVER_LICENSE);

#define USB_VENDOR_ID_ACECAD	0x0460
#define USB_DEVICE_ID_FLAIR	0x0004
#define USB_DEVICE_ID_302	0x0008

struct usb_acecad {
	char name[128];
	char phys[64];
	struct usb_device *usbdev;
	struct input_dev *input;
	struct urb *irq;

	signed char *data;
	dma_addr_t data_dma;
};

static void usb_acecad_irq(struct urb *urb, struct pt_regs *regs)
{
	struct usb_acecad *acecad = urb->context;
	unsigned char *data = acecad->data;
	struct input_dev *dev = acecad->input;
	int prox, status;

	switch (urb->status) {
		case 0:
			/* success */
			break;
		case -ECONNRESET:
		case -ENOENT:
		case -ESHUTDOWN:
			/* this urb is terminated, clean up */
			dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
			return;
		default:
			dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
			goto resubmit;
	}

	prox = (data[0] & 0x04) >> 2;
	input_report_key(dev, BTN_TOOL_PEN, prox);

	if (prox) {
		int x = data[1] | (data[2] << 8);
		int y = data[3] | (data[4] << 8);
		/* Pressure should compute the same way for flair and 302 */
		int pressure = data[5] | (data[6] << 8);
		int touch = data[0] & 0x01;
		int stylus = (data[0] & 0x10) >> 4;
		int stylus2 = (data[0] & 0x20) >> 5;
		input_report_abs(dev, ABS_X, x);
		input_report_abs(dev, ABS_Y, y);
		input_report_abs(dev, ABS_PRESSURE, pressure);
		input_report_key(dev, BTN_TOUCH, touch);
		input_report_key(dev, BTN_STYLUS, stylus);
		input_report_key(dev, BTN_STYLUS2, stylus2);
	}

	/* event termination */
	input_sync(dev);

resubmit:
	status = usb_submit_urb(urb, GFP_ATOMIC);
	if (status)
		err("can't resubmit intr, %s-%s/input0, status %d",
			acecad->usbdev->bus->bus_name, acecad->usbdev->devpath, status);
}

static int usb_acecad_open(struct input_dev *dev)
{
	struct usb_acecad *acecad = dev->private;

	acecad->irq->dev = acecad->usbdev;
	if (usb_submit_urb(acecad->irq, GFP_KERNEL))
		return -EIO;

	return 0;
}

static void usb_acecad_close(struct input_dev *dev)
{
	struct usb_acecad *acecad = dev->private;

	usb_kill_urb(acecad->irq);
}

static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
	struct usb_device *dev = interface_to_usbdev(intf);
	struct usb_host_interface *interface = intf->cur_altsetting;
	struct usb_endpoint_descriptor *endpoint;
	struct usb_acecad *acecad;
	struct input_dev *input_dev;
	int pipe, maxp;

	if (interface->desc.bNumEndpoints != 1)
		return -ENODEV;

	endpoint = &interface->endpoint[0].desc;

	if (!(endpoint->bEndpointAddress & 0x80))
		return -ENODEV;

	if ((endpoint->bmAttributes & 3) != 3)
		return -ENODEV;

	pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
	maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));

	acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL);
	input_dev = input_allocate_device();
	if (!acecad || !input_dev)
		goto fail1;

	acecad->data = usb_buffer_alloc(dev, 8, SLAB_KERNEL, &acecad->data_dma);
	if (!acecad->data)
		goto fail1;

	acecad->irq = usb_alloc_urb(0, GFP_KERNEL);
	if (!acecad->irq)
		goto fail2;

	acecad->usbdev = dev;
	acecad->input = input_dev;

	if (dev->manufacturer)
		strlcpy(acecad->name, dev->manufacturer, sizeof(acecad->name));

	if (dev->product) {
		if (dev->manufacturer)
			strlcat(acecad->name, " ", sizeof(acecad->name));
		strlcat(acecad->name, dev->product, sizeof(acecad->name));
	}

	usb_make_path(dev, acecad->phys, sizeof(acecad->phys));
	strlcat(acecad->phys, "/input0", sizeof(acecad->phys));

	input_dev->name = acecad->name;
	input_dev->phys = acecad->phys;
	usb_to_input_id(dev, &input_dev->id);
	input_dev->cdev.dev = &intf->dev;
	input_dev->private = acecad;

	input_dev->open = usb_acecad_open;
	input_dev->close = usb_acecad_close;

	input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
	input_dev->absbit[0] = BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE);
	input_dev->keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
	input_dev->keybit[LONG(BTN_DIGI)] = BIT(BTN_TOOL_PEN) |BIT(BTN_TOUCH) | BIT(BTN_STYLUS) | BIT(BTN_STYLUS2);

	switch (id->driver_info) {
		case 0:
			input_dev->absmax[ABS_X] = 5000;
			input_dev->absmax[ABS_Y] = 3750;
			input_dev->absmax[ABS_PRESSURE] = 512;
			if (!strlen(acecad->name))
				snprintf(acecad->name, sizeof(acecad->name),
					"USB Acecad Flair Tablet %04x:%04x",
					le16_to_cpu(dev->descriptor.idVendor),
					le16_to_cpu(dev->descriptor.idProduct));
			break;
		case 1:
			input_dev->absmax[ABS_X] = 3000;
			input_dev->absmax[ABS_Y] = 2250;
			input_dev->absmax[ABS_PRESSURE] = 1024;
			if (!strlen(acecad->name))
				snprintf(acecad->name, sizeof(acecad->name),
					"USB Acecad 302 Tablet %04x:%04x",
					le16_to_cpu(dev->descriptor.idVendor),
					le16_to_cpu(dev->descriptor.idProduct));
			break;
	}

	input_dev->absfuzz[ABS_X] = 4;
	input_dev->absfuzz[ABS_Y] = 4;

	usb_fill_int_urb(acecad->irq, dev, pipe,
			acecad->data, maxp > 8 ? 8 : maxp,
			usb_acecad_irq, acecad, endpoint->bInterval);
	acecad->irq->transfer_dma = acecad->data_dma;
	acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;

	input_register_device(acecad->input);

	usb_set_intfdata(intf, acecad);

	return 0;

 fail2:	usb_buffer_free(dev, 8, acecad->data, acecad->data_dma);
 fail1: input_free_device(input_dev);
	kfree(acecad);
	return -ENOMEM;
}

static void usb_acecad_disconnect(struct usb_interface *intf)
{
	struct usb_acecad *acecad = usb_get_intfdata(intf);

	usb_set_intfdata(intf, NULL);
	if (acecad) {
		usb_kill_urb(acecad->irq);
		input_unregister_device(acecad->input);
		usb_free_urb(acecad->irq);
		usb_buffer_free(interface_to_usbdev(intf), 10, acecad->data, acecad->data_dma);
		kfree(acecad);
	}
}

static struct usb_device_id usb_acecad_id_table [] = {
	{ USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_FLAIR), .driver_info = 0 },
	{ USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_302),	 .driver_info = 1 },
	{ }
};

MODULE_DEVICE_TABLE(usb, usb_acecad_id_table);

static struct usb_driver usb_acecad_driver = {
	.owner =	THIS_MODULE,
	.name =		"usb_acecad",
	.probe =	usb_acecad_probe,
	.disconnect =	usb_acecad_disconnect,
	.id_table =	usb_acecad_id_table,
};

static int __init usb_acecad_init(void)
{
	int result = usb_register(&usb_acecad_driver);
	if (result == 0)
		info(DRIVER_VERSION ":" DRIVER_DESC);
	return result;
}

static void __exit usb_acecad_exit(void)
{
	usb_deregister(&usb_acecad_driver);
}

module_init(usb_acecad_init);
module_exit(usb_acecad_exit);