diff options
Diffstat (limited to 'drivers/usb/input/itmtouch.c')
| -rw-r--r-- | drivers/usb/input/itmtouch.c | 271 |
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 aac968aab86..00000000000 --- 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); |