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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 @@
-/******************************************************************************
- * itmtouch.c -- Driver for ITM touchscreen panel
- *
- * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Based upon original work by Chris Collins <xfire-itmtouch@xware.cx>.
- *
- * Kudos to ITM for providing me with the datasheet for the panel,
- * even though it was a day later than I had finished writing this
- * driver.
- *
- * It has meant that I've been able to correct my interpretation of the
- * protocol packets however.
- *
- * CC -- 2003/9/29
- *
- * History
- * 1.0 & 1.1 2003 (CC) vojtech@suse.cz
- * Original version for 2.4.x kernels
- *
- * 1.2 02/03/2005 (HCE) hc@mivu.no
- * Complete rewrite to support Linux 2.6.10, thanks to mtouchusb.c for hints.
- * Unfortunately no calibration support at this time.
- *
- * 1.2.1 09/03/2005 (HCE) hc@mivu.no
- * Code cleanup and adjusting syntax to start matching kernel standards
- *
- * 1.2.2 10/05/2006 (MJA) massad@gmail.com
- * Flag for detecting if the screen was being touch was incorrectly
- * inverted, so no touch events were being detected.
- *
- *****************************************************************************/
-
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/usb/input.h>
-
-/* only an 8 byte buffer necessary for a single packet */
-#define ITM_BUFSIZE 8
-#define PATH_SIZE 64
-
-#define USB_VENDOR_ID_ITMINC 0x0403
-#define USB_PRODUCT_ID_TOUCHPANEL 0xf9e9
-
-#define DRIVER_AUTHOR "Hans-Christian Egtvedt <hc@mivu.no>"
-#define DRIVER_VERSION "v1.2.2"
-#define DRIVER_DESC "USB ITM Inc Touch Panel Driver"
-#define DRIVER_LICENSE "GPL"
-
-MODULE_AUTHOR( DRIVER_AUTHOR );
-MODULE_DESCRIPTION( DRIVER_DESC );
-MODULE_LICENSE( DRIVER_LICENSE );
-
-struct itmtouch_dev {
- struct usb_device *usbdev; /* usb device */
- struct input_dev *inputdev; /* input device */
- struct urb *readurb; /* urb */
- char rbuf[ITM_BUFSIZE]; /* data */
- int users;
- char name[128];
- char phys[64];
-};
-
-static struct usb_device_id itmtouch_ids [] = {
- { USB_DEVICE(USB_VENDOR_ID_ITMINC, USB_PRODUCT_ID_TOUCHPANEL) },
- { }
-};
-
-static void itmtouch_irq(struct urb *urb)
-{
- struct itmtouch_dev *itmtouch = urb->context;
- unsigned char *data = urb->transfer_buffer;
- struct input_dev *dev = itmtouch->inputdev;
- int retval;
-
- switch (urb->status) {
- case 0:
- /* success */
- break;
- case -ETIME:
- /* this urb is timing out */
- dbg("%s - urb timed out - was the device unplugged?",
- __FUNCTION__);
- return;
- 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 exit;
- }
-
- /* if pressure has been released, then don't report X/Y */
- if (!(data[7] & 0x20)) {
- input_report_abs(dev, ABS_X, (data[0] & 0x1F) << 7 | (data[3] & 0x7F));
- input_report_abs(dev, ABS_Y, (data[1] & 0x1F) << 7 | (data[4] & 0x7F));
- }
-
- input_report_abs(dev, ABS_PRESSURE, (data[2] & 1) << 7 | (data[5] & 0x7F));
- input_report_key(dev, BTN_TOUCH, ~data[7] & 0x20);
- input_sync(dev);
-
-exit:
- retval = usb_submit_urb (urb, GFP_ATOMIC);
- if (retval)
- printk(KERN_ERR "%s - usb_submit_urb failed with result: %d",
- __FUNCTION__, retval);
-}
-
-static int itmtouch_open(struct input_dev *input)
-{
- struct itmtouch_dev *itmtouch = input->private;
-
- itmtouch->readurb->dev = itmtouch->usbdev;
-
- if (usb_submit_urb(itmtouch->readurb, GFP_KERNEL))
- return -EIO;
-
- return 0;
-}
-
-static void itmtouch_close(struct input_dev *input)
-{
- struct itmtouch_dev *itmtouch = input->private;
-
- usb_kill_urb(itmtouch->readurb);
-}
-
-static int itmtouch_probe(struct usb_interface *intf, const struct usb_device_id *id)
-{
- struct itmtouch_dev *itmtouch;
- struct input_dev *input_dev;
- struct usb_host_interface *interface;
- struct usb_endpoint_descriptor *endpoint;
- struct usb_device *udev = interface_to_usbdev(intf);
- unsigned int pipe;
- unsigned int maxp;
-
- interface = intf->cur_altsetting;
- endpoint = &interface->endpoint[0].desc;
-
- itmtouch = kzalloc(sizeof(struct itmtouch_dev), GFP_KERNEL);
- input_dev = input_allocate_device();
- if (!itmtouch || !input_dev) {
- err("%s - Out of memory.", __FUNCTION__);
- goto fail;
- }
-
- itmtouch->usbdev = udev;
- itmtouch->inputdev = input_dev;
-
- if (udev->manufacturer)
- strlcpy(itmtouch->name, udev->manufacturer, sizeof(itmtouch->name));
-
- if (udev->product) {
- if (udev->manufacturer)
- strlcat(itmtouch->name, " ", sizeof(itmtouch->name));
- strlcat(itmtouch->name, udev->product, sizeof(itmtouch->name));
- }
-
- if (!strlen(itmtouch->name))
- sprintf(itmtouch->name, "USB ITM touchscreen");
-
- usb_make_path(udev, itmtouch->phys, sizeof(itmtouch->phys));
- strlcpy(itmtouch->phys, "/input0", sizeof(itmtouch->phys));
-
- input_dev->name = itmtouch->name;
- input_dev->phys = itmtouch->phys;
- usb_to_input_id(udev, &input_dev->id);
- input_dev->cdev.dev = &intf->dev;
- input_dev->private = itmtouch;
-
- input_dev->open = itmtouch_open;
- input_dev->close = itmtouch_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_TOUCH)] = BIT(BTN_TOUCH);
-
- /* device limits */
- /* as specified by the ITM datasheet, X and Y are 12bit,
- * Z (pressure) is 8 bit. However, the fields are defined up
- * to 14 bits for future possible expansion.
- */
- input_set_abs_params(input_dev, ABS_X, 0, 0x0FFF, 2, 0);
- input_set_abs_params(input_dev, ABS_Y, 0, 0x0FFF, 2, 0);
- input_set_abs_params(input_dev, ABS_PRESSURE, 0, 0xFF, 2, 0);
-
- /* initialise the URB so we can read from the transport stream */
- pipe = usb_rcvintpipe(itmtouch->usbdev, endpoint->bEndpointAddress);
- maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
-
- if (maxp > ITM_BUFSIZE)
- maxp = ITM_BUFSIZE;
-
- itmtouch->readurb = usb_alloc_urb(0, GFP_KERNEL);
- if (!itmtouch->readurb) {
- dbg("%s - usb_alloc_urb failed: itmtouch->readurb", __FUNCTION__);
- goto fail;
- }
-
- usb_fill_int_urb(itmtouch->readurb, itmtouch->usbdev, pipe, itmtouch->rbuf,
- maxp, itmtouch_irq, itmtouch, endpoint->bInterval);
-
- input_register_device(itmtouch->inputdev);
-
- usb_set_intfdata(intf, itmtouch);
-
- return 0;
-
- fail: input_free_device(input_dev);
- kfree(itmtouch);
- return -ENOMEM;
-}
-
-static void itmtouch_disconnect(struct usb_interface *intf)
-{
- struct itmtouch_dev *itmtouch = usb_get_intfdata(intf);
-
- usb_set_intfdata(intf, NULL);
-
- if (itmtouch) {
- input_unregister_device(itmtouch->inputdev);
- usb_kill_urb(itmtouch->readurb);
- usb_free_urb(itmtouch->readurb);
- kfree(itmtouch);
- }
-}
-
-MODULE_DEVICE_TABLE(usb, itmtouch_ids);
-
-static struct usb_driver itmtouch_driver = {
- .name = "itmtouch",
- .probe = itmtouch_probe,
- .disconnect = itmtouch_disconnect,
- .id_table = itmtouch_ids,
-};
-
-static int __init itmtouch_init(void)
-{
- info(DRIVER_DESC " " DRIVER_VERSION);
- info(DRIVER_AUTHOR);
- return usb_register(&itmtouch_driver);
-}
-
-static void __exit itmtouch_exit(void)
-{
- usb_deregister(&itmtouch_driver);
-}
-
-module_init(itmtouch_init);
-module_exit(itmtouch_exit);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.