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/usb/input.h>
32
33MODULE_AUTHOR("Edouard TISSERANT <edouard.tisserant@wanadoo.fr>");
34MODULE_DESCRIPTION("USB Acecad Flair tablet driver");
35MODULE_LICENSE("GPL");
36
37#define USB_VENDOR_ID_ACECAD 0x0460
38#define USB_DEVICE_ID_FLAIR 0x0004
39#define USB_DEVICE_ID_302 0x0008
40
41struct usb_acecad {
42 char name[128];
43 char phys[64];
44 struct usb_interface *intf;
45 struct input_dev *input;
46 struct urb *irq;
47
48 unsigned char *data;
49 dma_addr_t data_dma;
50};
51
52static void usb_acecad_irq(struct urb *urb)
53{
54 struct usb_acecad *acecad = urb->context;
55 unsigned char *data = acecad->data;
56 struct input_dev *dev = acecad->input;
57 struct usb_interface *intf = acecad->intf;
58 struct usb_device *udev = interface_to_usbdev(intf);
59 int prox, status;
60
61 switch (urb->status) {
62 case 0:
63 /* success */
64 break;
65 case -ECONNRESET:
66 case -ENOENT:
67 case -ESHUTDOWN:
68 /* this urb is terminated, clean up */
69 dev_dbg(&intf->dev, "%s - urb shutting down with status: %d\n",
70 __func__, urb->status);
71 return;
72 default:
73 dev_dbg(&intf->dev, "%s - nonzero urb status received: %d\n",
74 __func__, urb->status);
75 goto resubmit;
76 }
77
78 prox = (data[0] & 0x04) >> 2;
79 input_report_key(dev, BTN_TOOL_PEN, prox);
80
81 if (prox) {
82 int x = data[1] | (data[2] << 8);
83 int y = data[3] | (data[4] << 8);
84 /* Pressure should compute the same way for flair and 302 */
85 int pressure = data[5] | (data[6] << 8);
86 int touch = data[0] & 0x01;
87 int stylus = (data[0] & 0x10) >> 4;
88 int stylus2 = (data[0] & 0x20) >> 5;
89 input_report_abs(dev, ABS_X, x);
90 input_report_abs(dev, ABS_Y, y);
91 input_report_abs(dev, ABS_PRESSURE, pressure);
92 input_report_key(dev, BTN_TOUCH, touch);
93 input_report_key(dev, BTN_STYLUS, stylus);
94 input_report_key(dev, BTN_STYLUS2, stylus2);
95 }
96
97 /* event termination */
98 input_sync(dev);
99
100resubmit:
101 status = usb_submit_urb(urb, GFP_ATOMIC);
102 if (status)
103 dev_err(&intf->dev,
104 "can't resubmit intr, %s-%s/input0, status %d\n",
105 udev->bus->bus_name,
106 udev->devpath, status);
107}
108
109static int usb_acecad_open(struct input_dev *dev)
110{
111 struct usb_acecad *acecad = input_get_drvdata(dev);
112
113 acecad->irq->dev = interface_to_usbdev(acecad->intf);
114 if (usb_submit_urb(acecad->irq, GFP_KERNEL))
115 return -EIO;
116
117 return 0;
118}
119
120static void usb_acecad_close(struct input_dev *dev)
121{
122 struct usb_acecad *acecad = input_get_drvdata(dev);
123
124 usb_kill_urb(acecad->irq);
125}
126
127static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_id *id)
128{
129 struct usb_device *dev = interface_to_usbdev(intf);
130 struct usb_host_interface *interface = intf->cur_altsetting;
131 struct usb_endpoint_descriptor *endpoint;
132 struct usb_acecad *acecad;
133 struct input_dev *input_dev;
134 int pipe, maxp;
135 int err;
136
137 if (interface->desc.bNumEndpoints != 1)
138 return -ENODEV;
139
140 endpoint = &interface->endpoint[0].desc;
141
142 if (!usb_endpoint_is_int_in(endpoint))
143 return -ENODEV;
144
145 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
146 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
147
148 acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL);
149 input_dev = input_allocate_device();
150 if (!acecad || !input_dev) {
151 err = -ENOMEM;
152 goto fail1;
153 }
154
155 acecad->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &acecad->data_dma);
156 if (!acecad->data) {
157 err= -ENOMEM;
158 goto fail1;
159 }
160
161 acecad->irq = usb_alloc_urb(0, GFP_KERNEL);
162 if (!acecad->irq) {
163 err = -ENOMEM;
164 goto fail2;
165 }
166
167 acecad->intf = intf;
168 acecad->input = input_dev;
169
170 if (dev->manufacturer)
171 strlcpy(acecad->name, dev->manufacturer, sizeof(acecad->name));
172
173 if (dev->product) {
174 if (dev->manufacturer)
175 strlcat(acecad->name, " ", sizeof(acecad->name));
176 strlcat(acecad->name, dev->product, sizeof(acecad->name));
177 }
178
179 usb_make_path(dev, acecad->phys, sizeof(acecad->phys));
180 strlcat(acecad->phys, "/input0", sizeof(acecad->phys));
181
182 input_dev->name = acecad->name;
183 input_dev->phys = acecad->phys;
184 usb_to_input_id(dev, &input_dev->id);
185 input_dev->dev.parent = &intf->dev;
186
187 input_set_drvdata(input_dev, acecad);
188
189 input_dev->open = usb_acecad_open;
190 input_dev->close = usb_acecad_close;
191
192 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
193 input_dev->keybit[BIT_WORD(BTN_DIGI)] = BIT_MASK(BTN_TOOL_PEN) |
194 BIT_MASK(BTN_TOUCH) | BIT_MASK(BTN_STYLUS) |
195 BIT_MASK(BTN_STYLUS2);
196
197 switch (id->driver_info) {
198 case 0:
199 input_set_abs_params(input_dev, ABS_X, 0, 5000, 4, 0);
200 input_set_abs_params(input_dev, ABS_Y, 0, 3750, 4, 0);
201 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 512, 0, 0);
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
209 case 1:
210 input_set_abs_params(input_dev, ABS_X, 0, 53000, 4, 0);
211 input_set_abs_params(input_dev, ABS_Y, 0, 2250, 4, 0);
212 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 1024, 0, 0);
213 if (!strlen(acecad->name))
214 snprintf(acecad->name, sizeof(acecad->name),
215 "USB Acecad 302 Tablet %04x:%04x",
216 le16_to_cpu(dev->descriptor.idVendor),
217 le16_to_cpu(dev->descriptor.idProduct));
218 break;
219 }
220
221 usb_fill_int_urb(acecad->irq, dev, pipe,
222 acecad->data, maxp > 8 ? 8 : maxp,
223 usb_acecad_irq, acecad, endpoint->bInterval);
224 acecad->irq->transfer_dma = acecad->data_dma;
225 acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
226
227 err = input_register_device(acecad->input);
228 if (err)
229 goto fail3;
230
231 usb_set_intfdata(intf, acecad);
232
233 return 0;
234
235 fail3: usb_free_urb(acecad->irq);
236 fail2: usb_free_coherent(dev, 8, acecad->data, acecad->data_dma);
237 fail1: input_free_device(input_dev);
238 kfree(acecad);
239 return err;
240}
241
242static void usb_acecad_disconnect(struct usb_interface *intf)
243{
244 struct usb_acecad *acecad = usb_get_intfdata(intf);
245 struct usb_device *udev = interface_to_usbdev(intf);
246
247 usb_set_intfdata(intf, NULL);
248
249 input_unregister_device(acecad->input);
250 usb_free_urb(acecad->irq);
251 usb_free_coherent(udev, 8, acecad->data, acecad->data_dma);
252 kfree(acecad);
253}
254
255static const 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
261MODULE_DEVICE_TABLE(usb, usb_acecad_id_table);
262
263static 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
270module_usb_driver(usb_acecad_driver);
271