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提交 db61a912 编写于 作者: D Dmitry Torokhov
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Input: remove old USB touchscreen drivers 

itmtoch, mtouchusb and touchkitusb have been replaced with
composite usbtouchscreen driver and can be removed now.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
上级 21298f71
隐藏空白更改
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drivers/usb/input/Makefile
浏览文件 @ db61a912
......@@ -38,9 +38,6 @@ obj-$(CONFIG_USB_KBD) += usbkbd.o
obj-$(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
......
drivers/usb/input/itmtouch.c 已删除 100644 → 0
浏览文件 @ 21298f71
/******************************************************************************
* 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);
drivers/usb/input/mtouchusb.c 已删除 100644 → 0
浏览文件 @ 21298f71
/******************************************************************************
* 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");
drivers/usb/input/touchkitusb.c 已删除 100644 → 0
浏览文件 @ 21298f71
/******************************************************************************
* 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");
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