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path: root/drivers/usb/input/itmtouch.c
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Diffstat (limited to 'drivers/usb/input/itmtouch.c')
-rw-r--r--drivers/usb/input/itmtouch.c271
1 files changed, 0 insertions, 271 deletions
diff --git a/drivers/usb/input/itmtouch.c b/drivers/usb/input/itmtouch.c
deleted file mode 100644
index aac968aab860..000000000000
--- a/drivers/usb/input/itmtouch.c
+++ /dev/null
@@ -1,271 +0,0 @@
1/******************************************************************************
2 * itmtouch.c -- Driver for ITM touchscreen panel
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of the
7 * License, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17 *
18 * Based upon original work by Chris Collins <xfire-itmtouch@xware.cx>.
19 *
20 * Kudos to ITM for providing me with the datasheet for the panel,
21 * even though it was a day later than I had finished writing this
22 * driver.
23 *
24 * It has meant that I've been able to correct my interpretation of the
25 * protocol packets however.
26 *
27 * CC -- 2003/9/29
28 *
29 * History
30 * 1.0 & 1.1 2003 (CC) vojtech@suse.cz
31 * Original version for 2.4.x kernels
32 *
33 * 1.2 02/03/2005 (HCE) hc@mivu.no
34 * Complete rewrite to support Linux 2.6.10, thanks to mtouchusb.c for hints.
35 * Unfortunately no calibration support at this time.
36 *
37 * 1.2.1 09/03/2005 (HCE) hc@mivu.no
38 * Code cleanup and adjusting syntax to start matching kernel standards
39 *
40 * 1.2.2 10/05/2006 (MJA) massad@gmail.com
41 * Flag for detecting if the screen was being touch was incorrectly
42 * inverted, so no touch events were being detected.
43 *
44 *****************************************************************************/
45
46#include <linux/kernel.h>
47#include <linux/slab.h>
48#include <linux/module.h>
49#include <linux/init.h>
50#include <linux/usb/input.h>
51
52/* only an 8 byte buffer necessary for a single packet */
53#define ITM_BUFSIZE 8
54#define PATH_SIZE 64
55
56#define USB_VENDOR_ID_ITMINC 0x0403
57#define USB_PRODUCT_ID_TOUCHPANEL 0xf9e9
58
59#define DRIVER_AUTHOR "Hans-Christian Egtvedt <hc@mivu.no>"
60#define DRIVER_VERSION "v1.2.2"
61#define DRIVER_DESC "USB ITM Inc Touch Panel Driver"
62#define DRIVER_LICENSE "GPL"
63
64MODULE_AUTHOR( DRIVER_AUTHOR );
65MODULE_DESCRIPTION( DRIVER_DESC );
66MODULE_LICENSE( DRIVER_LICENSE );
67
68struct itmtouch_dev {
69 struct usb_device *usbdev; /* usb device */
70 struct input_dev *inputdev; /* input device */
71 struct urb *readurb; /* urb */
72 char rbuf[ITM_BUFSIZE]; /* data */
73 int users;
74 char name[128];
75 char phys[64];
76};
77
78static struct usb_device_id itmtouch_ids [] = {
79 { USB_DEVICE(USB_VENDOR_ID_ITMINC, USB_PRODUCT_ID_TOUCHPANEL) },
80 { }
81};
82
83static void itmtouch_irq(struct urb *urb)
84{
85 struct itmtouch_dev *itmtouch = urb->context;
86 unsigned char *data = urb->transfer_buffer;
87 struct input_dev *dev = itmtouch->inputdev;
88 int retval;
89
90 switch (urb->status) {
91 case 0:
92 /* success */
93 break;
94 case -ETIME:
95 /* this urb is timing out */
96 dbg("%s - urb timed out - was the device unplugged?",
97 __FUNCTION__);
98 return;
99 case -ECONNRESET:
100 case -ENOENT:
101 case -ESHUTDOWN:
102 /* this urb is terminated, clean up */
103 dbg("%s - urb shutting down with status: %d",
104 __FUNCTION__, urb->status);
105 return;
106 default:
107 dbg("%s - nonzero urb status received: %d",
108 __FUNCTION__, urb->status);
109 goto exit;
110 }
111
112 /* if pressure has been released, then don't report X/Y */
113 if (!(data[7] & 0x20)) {
114 input_report_abs(dev, ABS_X, (data[0] & 0x1F) << 7 | (data[3] & 0x7F));
115 input_report_abs(dev, ABS_Y, (data[1] & 0x1F) << 7 | (data[4] & 0x7F));
116 }
117
118 input_report_abs(dev, ABS_PRESSURE, (data[2] & 1) << 7 | (data[5] & 0x7F));
119 input_report_key(dev, BTN_TOUCH, ~data[7] & 0x20);
120 input_sync(dev);
121
122exit:
123 retval = usb_submit_urb (urb, GFP_ATOMIC);
124 if (retval)
125 printk(KERN_ERR "%s - usb_submit_urb failed with result: %d",
126 __FUNCTION__, retval);
127}
128
129static int itmtouch_open(struct input_dev *input)
130{
131 struct itmtouch_dev *itmtouch = input->private;
132
133 itmtouch->readurb->dev = itmtouch->usbdev;
134
135 if (usb_submit_urb(itmtouch->readurb, GFP_KERNEL))
136 return -EIO;
137
138 return 0;
139}
140
141static void itmtouch_close(struct input_dev *input)
142{
143 struct itmtouch_dev *itmtouch = input->private;
144
145 usb_kill_urb(itmtouch->readurb);
146}
147
148static int itmtouch_probe(struct usb_interface *intf, const struct usb_device_id *id)
149{
150 struct itmtouch_dev *itmtouch;
151 struct input_dev *input_dev;
152 struct usb_host_interface *interface;
153 struct usb_endpoint_descriptor *endpoint;
154 struct usb_device *udev = interface_to_usbdev(intf);
155 unsigned int pipe;
156 unsigned int maxp;
157
158 interface = intf->cur_altsetting;
159 endpoint = &interface->endpoint[0].desc;
160
161 itmtouch = kzalloc(sizeof(struct itmtouch_dev), GFP_KERNEL);
162 input_dev = input_allocate_device();
163 if (!itmtouch || !input_dev) {
164 err("%s - Out of memory.", __FUNCTION__);
165 goto fail;
166 }
167
168 itmtouch->usbdev = udev;
169 itmtouch->inputdev = input_dev;
170
171 if (udev->manufacturer)
172 strlcpy(itmtouch->name, udev->manufacturer, sizeof(itmtouch->name));
173
174 if (udev->product) {
175 if (udev->manufacturer)
176 strlcat(itmtouch->name, " ", sizeof(itmtouch->name));
177 strlcat(itmtouch->name, udev->product, sizeof(itmtouch->name));
178 }
179
180 if (!strlen(itmtouch->name))
181 sprintf(itmtouch->name, "USB ITM touchscreen");
182
183 usb_make_path(udev, itmtouch->phys, sizeof(itmtouch->phys));
184 strlcpy(itmtouch->phys, "/input0", sizeof(itmtouch->phys));
185
186 input_dev->name = itmtouch->name;
187 input_dev->phys = itmtouch->phys;
188 usb_to_input_id(udev, &input_dev->id);
189 input_dev->cdev.dev = &intf->dev;
190 input_dev->private = itmtouch;
191
192 input_dev->open = itmtouch_open;
193 input_dev->close = itmtouch_close;
194
195 input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
196 input_dev->absbit[0] = BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE);
197 input_dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
198
199 /* device limits */
200 /* as specified by the ITM datasheet, X and Y are 12bit,
201 * Z (pressure) is 8 bit. However, the fields are defined up
202 * to 14 bits for future possible expansion.
203 */
204 input_set_abs_params(input_dev, ABS_X, 0, 0x0FFF, 2, 0);
205 input_set_abs_params(input_dev, ABS_Y, 0, 0x0FFF, 2, 0);
206 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 0xFF, 2, 0);
207
208 /* initialise the URB so we can read from the transport stream */
209 pipe = usb_rcvintpipe(itmtouch->usbdev, endpoint->bEndpointAddress);
210 maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
211
212 if (maxp > ITM_BUFSIZE)
213 maxp = ITM_BUFSIZE;
214
215 itmtouch->readurb = usb_alloc_urb(0, GFP_KERNEL);
216 if (!itmtouch->readurb) {
217 dbg("%s - usb_alloc_urb failed: itmtouch->readurb", __FUNCTION__);
218 goto fail;
219 }
220
221 usb_fill_int_urb(itmtouch->readurb, itmtouch->usbdev, pipe, itmtouch->rbuf,
222 maxp, itmtouch_irq, itmtouch, endpoint->bInterval);
223
224 input_register_device(itmtouch->inputdev);
225
226 usb_set_intfdata(intf, itmtouch);
227
228 return 0;
229
230 fail: input_free_device(input_dev);
231 kfree(itmtouch);
232 return -ENOMEM;
233}
234
235static void itmtouch_disconnect(struct usb_interface *intf)
236{
237 struct itmtouch_dev *itmtouch = usb_get_intfdata(intf);
238
239 usb_set_intfdata(intf, NULL);
240
241 if (itmtouch) {
242 input_unregister_device(itmtouch->inputdev);
243 usb_kill_urb(itmtouch->readurb);
244 usb_free_urb(itmtouch->readurb);
245 kfree(itmtouch);
246 }
247}
248
249MODULE_DEVICE_TABLE(usb, itmtouch_ids);
250
251static struct usb_driver itmtouch_driver = {
252 .name = "itmtouch",
253 .probe = itmtouch_probe,
254 .disconnect = itmtouch_disconnect,
255 .id_table = itmtouch_ids,
256};
257
258static int __init itmtouch_init(void)
259{
260 info(DRIVER_DESC " " DRIVER_VERSION);
261 info(DRIVER_AUTHOR);
262 return usb_register(&itmtouch_driver);
263}
264
265static void __exit itmtouch_exit(void)
266{
267 usb_deregister(&itmtouch_driver);
268}
269
270module_init(itmtouch_init);
271module_exit(itmtouch_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-10 00:41:16 -0500