obj-$(CONFIG_USB_KBTAB) += kbtab.o
obj-$(CONFIG_USB_KEYSPAN_REMOTE) += keyspan_remote.o
obj-$(CONFIG_USB_MOUSE) += usbmouse.o
-obj-$(CONFIG_USB_MTOUCH) += mtouchusb.o
-obj-$(CONFIG_USB_ITMTOUCH) += itmtouch.o
-obj-$(CONFIG_USB_EGALAX) += touchkitusb.o
obj-$(CONFIG_USB_TOUCHSCREEN) += usbtouchscreen.o
obj-$(CONFIG_USB_POWERMATE) += powermate.o
obj-$(CONFIG_USB_WACOM) += wacom.o
+++ /dev/null
-/******************************************************************************
- * 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);
+++ /dev/null
-/******************************************************************************
- * mtouchusb.c -- Driver for Microtouch (Now 3M) USB Touchscreens
- *
- * 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 Radoslaw Garbacz (usb-support@ite.pl)
- * (http://freshmeat.net/projects/3mtouchscreendriver)
- *
- * History
- *
- * 0.3 & 0.4 2002 (TEJ) tejohnson@yahoo.com
- * Updated to 2.4.18, then 2.4.19
- * Old version still relied on stealing a minor
- *
- * 0.5 02/26/2004 (TEJ) tejohnson@yahoo.com
- * Complete rewrite using Linux Input in 2.6.3
- * Unfortunately no calibration support at this time
- *
- * 1.4 04/25/2004 (TEJ) tejohnson@yahoo.com
- * Changed reset from standard USB dev reset to vendor reset
- * Changed data sent to host from compensated to raw coordinates
- * Eliminated vendor/product module params
- * Performed multiple successful tests with an EXII-5010UC
- *
- * 1.5 02/27/2005 ddstreet@ieee.org
- * Added module parameter to select raw or hw-calibrated coordinate reporting
- *
- *****************************************************************************/
-
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/usb/input.h>
-
-#define MTOUCHUSB_MIN_XC 0x0
-#define MTOUCHUSB_MAX_RAW_XC 0x4000
-#define MTOUCHUSB_MAX_CALIB_XC 0xffff
-#define MTOUCHUSB_XC_FUZZ 0x0
-#define MTOUCHUSB_XC_FLAT 0x0
-#define MTOUCHUSB_MIN_YC 0x0
-#define MTOUCHUSB_MAX_RAW_YC 0x4000
-#define MTOUCHUSB_MAX_CALIB_YC 0xffff
-#define MTOUCHUSB_YC_FUZZ 0x0
-#define MTOUCHUSB_YC_FLAT 0x0
-
-#define MTOUCHUSB_ASYNC_REPORT 1
-#define MTOUCHUSB_RESET 7
-#define MTOUCHUSB_REPORT_DATA_SIZE 11
-#define MTOUCHUSB_REQ_CTRLLR_ID 10
-
-#define MTOUCHUSB_GET_RAW_XC(data) (data[8]<<8 | data[7])
-#define MTOUCHUSB_GET_CALIB_XC(data) (data[4]<<8 | data[3])
-#define MTOUCHUSB_GET_RAW_YC(data) (data[10]<<8 | data[9])
-#define MTOUCHUSB_GET_CALIB_YC(data) (data[6]<<8 | data[5])
-#define MTOUCHUSB_GET_XC(data) (raw_coordinates ? \
- MTOUCHUSB_GET_RAW_XC(data) : \
- MTOUCHUSB_GET_CALIB_XC(data))
-#define MTOUCHUSB_GET_YC(data) (raw_coordinates ? \
- MTOUCHUSB_GET_RAW_YC(data) : \
- MTOUCHUSB_GET_CALIB_YC(data))
-#define MTOUCHUSB_GET_TOUCHED(data) ((data[2] & 0x40) ? 1:0)
-
-#define DRIVER_VERSION "v1.5"
-#define DRIVER_AUTHOR "Todd E. Johnson, tejohnson@yahoo.com"
-#define DRIVER_DESC "3M USB Touchscreen Driver"
-#define DRIVER_LICENSE "GPL"
-
-static int raw_coordinates = 1;
-
-module_param(raw_coordinates, bool, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(raw_coordinates, "report raw coordinate values (y, default) or hardware-calibrated coordinate values (n)");
-
-struct mtouch_usb {
- unsigned char *data;
- dma_addr_t data_dma;
- struct urb *irq;
- struct usb_device *udev;
- struct input_dev *input;
- char name[128];
- char phys[64];
-};
-
-static struct usb_device_id mtouchusb_devices[] = {
- { USB_DEVICE(0x0596, 0x0001) },
- { }
-};
-
-static void mtouchusb_irq(struct urb *urb)
-{
- struct mtouch_usb *mtouch = urb->context;
- 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;
- }
-
- input_report_key(mtouch->input, BTN_TOUCH,
- MTOUCHUSB_GET_TOUCHED(mtouch->data));
- input_report_abs(mtouch->input, ABS_X, MTOUCHUSB_GET_XC(mtouch->data));
- input_report_abs(mtouch->input, ABS_Y,
- (raw_coordinates ? MTOUCHUSB_MAX_RAW_YC : MTOUCHUSB_MAX_CALIB_YC)
- - MTOUCHUSB_GET_YC(mtouch->data));
- input_sync(mtouch->input);
-
-exit:
- retval = usb_submit_urb(urb, GFP_ATOMIC);
- if (retval)
- err("%s - usb_submit_urb failed with result: %d",
- __FUNCTION__, retval);
-}
-
-static int mtouchusb_open(struct input_dev *input)
-{
- struct mtouch_usb *mtouch = input->private;
-
- mtouch->irq->dev = mtouch->udev;
-
- if (usb_submit_urb(mtouch->irq, GFP_ATOMIC))
- return -EIO;
-
- return 0;
-}
-
-static void mtouchusb_close(struct input_dev *input)
-{
- struct mtouch_usb *mtouch = input->private;
-
- usb_kill_urb(mtouch->irq);
-}
-
-static int mtouchusb_alloc_buffers(struct usb_device *udev, struct mtouch_usb *mtouch)
-{
- dbg("%s - called", __FUNCTION__);
-
- mtouch->data = usb_buffer_alloc(udev, MTOUCHUSB_REPORT_DATA_SIZE,
- GFP_ATOMIC, &mtouch->data_dma);
-
- if (!mtouch->data)
- return -1;
-
- return 0;
-}
-
-static void mtouchusb_free_buffers(struct usb_device *udev, struct mtouch_usb *mtouch)
-{
- dbg("%s - called", __FUNCTION__);
-
- if (mtouch->data)
- usb_buffer_free(udev, MTOUCHUSB_REPORT_DATA_SIZE,
- mtouch->data, mtouch->data_dma);
-}
-
-static int mtouchusb_probe(struct usb_interface *intf, const struct usb_device_id *id)
-{
- struct mtouch_usb *mtouch;
- struct input_dev *input_dev;
- struct usb_host_interface *interface;
- struct usb_endpoint_descriptor *endpoint;
- struct usb_device *udev = interface_to_usbdev(intf);
- int nRet;
-
- dbg("%s - called", __FUNCTION__);
-
- dbg("%s - setting interface", __FUNCTION__);
- interface = intf->cur_altsetting;
-
- dbg("%s - setting endpoint", __FUNCTION__);
- endpoint = &interface->endpoint[0].desc;
-
- mtouch = kzalloc(sizeof(struct mtouch_usb), GFP_KERNEL);
- input_dev = input_allocate_device();
- if (!mtouch || !input_dev) {
- err("%s - Out of memory.", __FUNCTION__);
- goto fail1;
- }
-
- dbg("%s - allocating buffers", __FUNCTION__);
- if (mtouchusb_alloc_buffers(udev, mtouch))
- goto fail2;
-
- mtouch->udev = udev;
- mtouch->input = input_dev;
-
- if (udev->manufacturer)
- strlcpy(mtouch->name, udev->manufacturer, sizeof(mtouch->name));
-
- if (udev->product) {
- if (udev->manufacturer)
- strlcat(mtouch->name, " ", sizeof(mtouch->name));
- strlcat(mtouch->name, udev->product, sizeof(mtouch->name));
- }
-
- if (!strlen(mtouch->name))
- snprintf(mtouch->name, sizeof(mtouch->name),
- "USB Touchscreen %04x:%04x",
- le16_to_cpu(udev->descriptor.idVendor),
- le16_to_cpu(udev->descriptor.idProduct));
-
- usb_make_path(udev, mtouch->phys, sizeof(mtouch->phys));
- strlcpy(mtouch->phys, "/input0", sizeof(mtouch->phys));
-
- input_dev->name = mtouch->name;
- input_dev->phys = mtouch->phys;
- usb_to_input_id(udev, &input_dev->id);
- input_dev->cdev.dev = &intf->dev;
- input_dev->private = mtouch;
-
- input_dev->open = mtouchusb_open;
- input_dev->close = mtouchusb_close;
-
- input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
- input_dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
- input_set_abs_params(input_dev, ABS_X, MTOUCHUSB_MIN_XC,
- raw_coordinates ? MTOUCHUSB_MAX_RAW_XC : MTOUCHUSB_MAX_CALIB_XC,
- MTOUCHUSB_XC_FUZZ, MTOUCHUSB_XC_FLAT);
- input_set_abs_params(input_dev, ABS_Y, MTOUCHUSB_MIN_YC,
- raw_coordinates ? MTOUCHUSB_MAX_RAW_YC : MTOUCHUSB_MAX_CALIB_YC,
- MTOUCHUSB_YC_FUZZ, MTOUCHUSB_YC_FLAT);
-
- nRet = usb_control_msg(mtouch->udev, usb_rcvctrlpipe(udev, 0),
- MTOUCHUSB_RESET,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
- dbg("%s - usb_control_msg - MTOUCHUSB_RESET - bytes|err: %d",
- __FUNCTION__, nRet);
-
- dbg("%s - usb_alloc_urb: mtouch->irq", __FUNCTION__);
- mtouch->irq = usb_alloc_urb(0, GFP_KERNEL);
- if (!mtouch->irq) {
- dbg("%s - usb_alloc_urb failed: mtouch->irq", __FUNCTION__);
- goto fail2;
- }
-
- dbg("%s - usb_fill_int_urb", __FUNCTION__);
- usb_fill_int_urb(mtouch->irq, mtouch->udev,
- usb_rcvintpipe(mtouch->udev, 0x81),
- mtouch->data, MTOUCHUSB_REPORT_DATA_SIZE,
- mtouchusb_irq, mtouch, endpoint->bInterval);
-
- dbg("%s - input_register_device", __FUNCTION__);
- input_register_device(mtouch->input);
-
- nRet = usb_control_msg(mtouch->udev, usb_rcvctrlpipe(udev, 0),
- MTOUCHUSB_ASYNC_REPORT,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- 1, 1, NULL, 0, USB_CTRL_SET_TIMEOUT);
- dbg("%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d",
- __FUNCTION__, nRet);
-
- usb_set_intfdata(intf, mtouch);
- return 0;
-
-fail2: mtouchusb_free_buffers(udev, mtouch);
-fail1: input_free_device(input_dev);
- kfree(mtouch);
- return -ENOMEM;
-}
-
-static void mtouchusb_disconnect(struct usb_interface *intf)
-{
- struct mtouch_usb *mtouch = usb_get_intfdata(intf);
-
- dbg("%s - called", __FUNCTION__);
- usb_set_intfdata(intf, NULL);
- if (mtouch) {
- dbg("%s - mtouch is initialized, cleaning up", __FUNCTION__);
- usb_kill_urb(mtouch->irq);
- input_unregister_device(mtouch->input);
- usb_free_urb(mtouch->irq);
- mtouchusb_free_buffers(interface_to_usbdev(intf), mtouch);
- kfree(mtouch);
- }
-}
-
-MODULE_DEVICE_TABLE(usb, mtouchusb_devices);
-
-static struct usb_driver mtouchusb_driver = {
- .name = "mtouchusb",
- .probe = mtouchusb_probe,
- .disconnect = mtouchusb_disconnect,
- .id_table = mtouchusb_devices,
-};
-
-static int __init mtouchusb_init(void)
-{
- dbg("%s - called", __FUNCTION__);
- return usb_register(&mtouchusb_driver);
-}
-
-static void __exit mtouchusb_cleanup(void)
-{
- dbg("%s - called", __FUNCTION__);
- usb_deregister(&mtouchusb_driver);
-}
-
-module_init(mtouchusb_init);
-module_exit(mtouchusb_cleanup);
-
-MODULE_AUTHOR(DRIVER_AUTHOR);
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_LICENSE("GPL");
+++ /dev/null
-/******************************************************************************
- * touchkitusb.c -- Driver for eGalax TouchKit USB Touchscreens
- *
- * Copyright (C) 2004-2005 by Daniel Ritz <daniel.ritz@gmx.ch>
- * Copyright (C) by Todd E. Johnson (mtouchusb.c)
- *
- * 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 mtouchusb.c
- *
- *****************************************************************************/
-
-//#define DEBUG
-
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/usb/input.h>
-
-#define TOUCHKIT_MIN_XC 0x0
-#define TOUCHKIT_MAX_XC 0x07ff
-#define TOUCHKIT_XC_FUZZ 0x0
-#define TOUCHKIT_XC_FLAT 0x0
-#define TOUCHKIT_MIN_YC 0x0
-#define TOUCHKIT_MAX_YC 0x07ff
-#define TOUCHKIT_YC_FUZZ 0x0
-#define TOUCHKIT_YC_FLAT 0x0
-#define TOUCHKIT_REPORT_DATA_SIZE 16
-
-#define TOUCHKIT_DOWN 0x01
-
-#define TOUCHKIT_PKT_TYPE_MASK 0xFE
-#define TOUCHKIT_PKT_TYPE_REPT 0x80
-#define TOUCHKIT_PKT_TYPE_DIAG 0x0A
-
-#define DRIVER_VERSION "v0.1"
-#define DRIVER_AUTHOR "Daniel Ritz <daniel.ritz@gmx.ch>"
-#define DRIVER_DESC "eGalax TouchKit USB HID Touchscreen Driver"
-
-static int swap_xy;
-module_param(swap_xy, bool, 0644);
-MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped.");
-
-struct touchkit_usb {
- unsigned char *data;
- dma_addr_t data_dma;
- char buffer[TOUCHKIT_REPORT_DATA_SIZE];
- int buf_len;
- struct urb *irq;
- struct usb_device *udev;
- struct input_dev *input;
- char name[128];
- char phys[64];
-};
-
-static struct usb_device_id touchkit_devices[] = {
- {USB_DEVICE(0x3823, 0x0001)},
- {USB_DEVICE(0x0123, 0x0001)},
- {USB_DEVICE(0x0eef, 0x0001)},
- {USB_DEVICE(0x0eef, 0x0002)},
- {}
-};
-
-/* helpers to read the data */
-static inline int touchkit_get_touched(char *data)
-{
- return (data[0] & TOUCHKIT_DOWN) ? 1 : 0;
-}
-
-static inline int touchkit_get_x(char *data)
-{
- return ((data[3] & 0x0F) << 7) | (data[4] & 0x7F);
-}
-
-static inline int touchkit_get_y(char *data)
-{
- return ((data[1] & 0x0F) << 7) | (data[2] & 0x7F);
-}
-
-
-/* processes one input packet. */
-static void touchkit_process_pkt(struct touchkit_usb *touchkit, char *pkt)
-{
- int x, y;
-
- /* only process report packets */
- if ((pkt[0] & TOUCHKIT_PKT_TYPE_MASK) != TOUCHKIT_PKT_TYPE_REPT)
- return;
-
- if (swap_xy) {
- y = touchkit_get_x(pkt);
- x = touchkit_get_y(pkt);
- } else {
- x = touchkit_get_x(pkt);
- y = touchkit_get_y(pkt);
- }
-
- input_report_key(touchkit->input, BTN_TOUCH, touchkit_get_touched(pkt));
- input_report_abs(touchkit->input, ABS_X, x);
- input_report_abs(touchkit->input, ABS_Y, y);
- input_sync(touchkit->input);
-}
-
-
-static int touchkit_get_pkt_len(char *buf)
-{
- switch (buf[0] & TOUCHKIT_PKT_TYPE_MASK) {
- case TOUCHKIT_PKT_TYPE_REPT:
- return 5;
-
- case TOUCHKIT_PKT_TYPE_DIAG:
- return buf[1] + 2;
- }
-
- return 0;
-}
-
-static void touchkit_process(struct touchkit_usb *touchkit, int len)
-{
- char *buffer;
- int pkt_len, buf_len, pos;
-
- /* if the buffer contains data, append */
- if (unlikely(touchkit->buf_len)) {
- int tmp;
-
- /* if only 1 byte in buffer, add another one to get length */
- if (touchkit->buf_len == 1)
- touchkit->buffer[1] = touchkit->data[0];
-
- pkt_len = touchkit_get_pkt_len(touchkit->buffer);
-
- /* unknown packet: drop everything */
- if (!pkt_len)
- return;
-
- /* append, process */
- tmp = pkt_len - touchkit->buf_len;
- memcpy(touchkit->buffer + touchkit->buf_len, touchkit->data, tmp);
- touchkit_process_pkt(touchkit, touchkit->buffer);
-
- buffer = touchkit->data + tmp;
- buf_len = len - tmp;
- } else {
- buffer = touchkit->data;
- buf_len = len;
- }
-
- /* only one byte left in buffer */
- if (unlikely(buf_len == 1)) {
- touchkit->buffer[0] = buffer[0];
- touchkit->buf_len = 1;
- return;
- }
-
- /* loop over the buffer */
- pos = 0;
- while (pos < buf_len) {
- /* get packet len */
- pkt_len = touchkit_get_pkt_len(buffer + pos);
-
- /* unknown packet: drop everything */
- if (unlikely(!pkt_len))
- return;
-
- /* full packet: process */
- if (likely(pkt_len <= buf_len)) {
- touchkit_process_pkt(touchkit, buffer + pos);
- } else {
- /* incomplete packet: save in buffer */
- memcpy(touchkit->buffer, buffer + pos, buf_len - pos);
- touchkit->buf_len = buf_len - pos;
- }
- pos += pkt_len;
- }
-}
-
-
-static void touchkit_irq(struct urb *urb)
-{
- struct touchkit_usb *touchkit = urb->context;
- 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;
- }
-
- touchkit_process(touchkit, urb->actual_length);
-
-exit:
- retval = usb_submit_urb(urb, GFP_ATOMIC);
- if (retval)
- err("%s - usb_submit_urb failed with result: %d",
- __FUNCTION__, retval);
-}
-
-static int touchkit_open(struct input_dev *input)
-{
- struct touchkit_usb *touchkit = input->private;
-
- touchkit->irq->dev = touchkit->udev;
-
- if (usb_submit_urb(touchkit->irq, GFP_ATOMIC))
- return -EIO;
-
- return 0;
-}
-
-static void touchkit_close(struct input_dev *input)
-{
- struct touchkit_usb *touchkit = input->private;
-
- usb_kill_urb(touchkit->irq);
-}
-
-static int touchkit_alloc_buffers(struct usb_device *udev,
- struct touchkit_usb *touchkit)
-{
- touchkit->data = usb_buffer_alloc(udev, TOUCHKIT_REPORT_DATA_SIZE,
- GFP_ATOMIC, &touchkit->data_dma);
-
- if (!touchkit->data)
- return -1;
-
- return 0;
-}
-
-static void touchkit_free_buffers(struct usb_device *udev,
- struct touchkit_usb *touchkit)
-{
- if (touchkit->data)
- usb_buffer_free(udev, TOUCHKIT_REPORT_DATA_SIZE,
- touchkit->data, touchkit->data_dma);
-}
-
-static int touchkit_probe(struct usb_interface *intf,
- const struct usb_device_id *id)
-{
- struct touchkit_usb *touchkit;
- struct input_dev *input_dev;
- struct usb_host_interface *interface;
- struct usb_endpoint_descriptor *endpoint;
- struct usb_device *udev = interface_to_usbdev(intf);
-
- interface = intf->cur_altsetting;
- endpoint = &interface->endpoint[0].desc;
-
- touchkit = kzalloc(sizeof(struct touchkit_usb), GFP_KERNEL);
- input_dev = input_allocate_device();
- if (!touchkit || !input_dev)
- goto out_free;
-
- if (touchkit_alloc_buffers(udev, touchkit))
- goto out_free;
-
- touchkit->irq = usb_alloc_urb(0, GFP_KERNEL);
- if (!touchkit->irq) {
- dbg("%s - usb_alloc_urb failed: touchkit->irq", __FUNCTION__);
- goto out_free_buffers;
- }
-
- touchkit->udev = udev;
- touchkit->input = input_dev;
-
- if (udev->manufacturer)
- strlcpy(touchkit->name, udev->manufacturer, sizeof(touchkit->name));
-
- if (udev->product) {
- if (udev->manufacturer)
- strlcat(touchkit->name, " ", sizeof(touchkit->name));
- strlcat(touchkit->name, udev->product, sizeof(touchkit->name));
- }
-
- if (!strlen(touchkit->name))
- snprintf(touchkit->name, sizeof(touchkit->name),
- "USB Touchscreen %04x:%04x",
- le16_to_cpu(udev->descriptor.idVendor),
- le16_to_cpu(udev->descriptor.idProduct));
-
- usb_make_path(udev, touchkit->phys, sizeof(touchkit->phys));
- strlcpy(touchkit->phys, "/input0", sizeof(touchkit->phys));
-
- input_dev->name = touchkit->name;
- input_dev->phys = touchkit->phys;
- usb_to_input_id(udev, &input_dev->id);
- input_dev->cdev.dev = &intf->dev;
- input_dev->private = touchkit;
- input_dev->open = touchkit_open;
- input_dev->close = touchkit_close;
-
- input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
- input_dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
- input_set_abs_params(input_dev, ABS_X, TOUCHKIT_MIN_XC, TOUCHKIT_MAX_XC,
- TOUCHKIT_XC_FUZZ, TOUCHKIT_XC_FLAT);
- input_set_abs_params(input_dev, ABS_Y, TOUCHKIT_MIN_YC, TOUCHKIT_MAX_YC,
- TOUCHKIT_YC_FUZZ, TOUCHKIT_YC_FLAT);
-
- usb_fill_int_urb(touchkit->irq, touchkit->udev,
- usb_rcvintpipe(touchkit->udev, 0x81),
- touchkit->data, TOUCHKIT_REPORT_DATA_SIZE,
- touchkit_irq, touchkit, endpoint->bInterval);
-
- touchkit->irq->transfer_dma = touchkit->data_dma;
- touchkit->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
-
- input_register_device(touchkit->input);
-
- usb_set_intfdata(intf, touchkit);
- return 0;
-
-out_free_buffers:
- touchkit_free_buffers(udev, touchkit);
-out_free:
- input_free_device(input_dev);
- kfree(touchkit);
- return -ENOMEM;
-}
-
-static void touchkit_disconnect(struct usb_interface *intf)
-{
- struct touchkit_usb *touchkit = usb_get_intfdata(intf);
-
- dbg("%s - called", __FUNCTION__);
-
- if (!touchkit)
- return;
-
- dbg("%s - touchkit is initialized, cleaning up", __FUNCTION__);
- usb_set_intfdata(intf, NULL);
- usb_kill_urb(touchkit->irq);
- input_unregister_device(touchkit->input);
- usb_free_urb(touchkit->irq);
- touchkit_free_buffers(interface_to_usbdev(intf), touchkit);
- kfree(touchkit);
-}
-
-MODULE_DEVICE_TABLE(usb, touchkit_devices);
-
-static struct usb_driver touchkit_driver = {
- .name = "touchkitusb",
- .probe = touchkit_probe,
- .disconnect = touchkit_disconnect,
- .id_table = touchkit_devices,
-};
-
-static int __init touchkit_init(void)
-{
- return usb_register(&touchkit_driver);
-}
-
-static void __exit touchkit_cleanup(void)
-{
- usb_deregister(&touchkit_driver);
-}
-
-module_init(touchkit_init);
-module_exit(touchkit_cleanup);
-
-MODULE_AUTHOR(DRIVER_AUTHOR);
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_LICENSE("GPL");
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff