[PATCH] USB: usbtouchscreen: unified USB touchscreen driver
A new single driver for various USB touchscreen devices. It currently supports: - eGalax TouchKit - PanJit TouchSet - 3M/Microtouch - ITM Touchscreens Support for the diffent devices can be enabled/disable when CONFIG_EMBEDDED is set. Sizes for comparision: text data bss dec hex filename 2942 724 4 3670 e56 touchkitusb.ko 2647 660 0 3307 ceb mtouchusb.ko 2448 628 0 3076 c04 itmtouch.ko 4145 1012 12 5169 1431 usbtouchscreen.ko Signed-off-by: Daniel Ritz <daniel.ritz@gmx.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Daniel Ritz
Greg Kroah-Hartman
parent
62a13db346
commit
1d3e20236d
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@ -200,9 +200,45 @@ config USB_POWERMATE
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To compile this driver as a module, choose M here: the
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module will be called powermate.
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config USB_TOUCHSCREEN
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tristate "USB Touchscreen Driver"
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depends on USB && INPUT
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---help---
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USB Touchscreen driver for:
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- eGalax Touchkit USB
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- PanJit TouchSet USB
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- 3M MicroTouch USB
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- ITM
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Have a look at <http://linux.chapter7.ch/touchkit/> for
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a usage description and the required user-space stuff.
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To compile this driver as a module, choose M here: the
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module will be called usbtouchscreen.
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config USB_TOUCHSCREEN_EGALAX
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default y
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bool "eGalax device support" if EMBEDDED
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depends on USB_TOUCHSCREEN
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config USB_TOUCHSCREEN_PANJIT
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default y
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bool "PanJit device support" if EMBEDDED
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depends on USB_TOUCHSCREEN
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config USB_TOUCHSCREEN_3M
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default y
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bool "3M/Microtouch device support" if EMBEDDED
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depends on USB_TOUCHSCREEN
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config USB_TOUCHSCREEN_ITM
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default y
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bool "ITM device support" if EMBEDDED
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depends on USB_TOUCHSCREEN
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config USB_MTOUCH
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tristate "MicroTouch USB Touchscreen Driver"
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depends on USB && INPUT
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depends on USB && INPUT && !USB_TOUCHSCREEN_3M
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---help---
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Say Y here if you want to use a MicroTouch (Now 3M) USB
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Touchscreen controller.
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@ -214,7 +250,7 @@ config USB_MTOUCH
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config USB_ITMTOUCH
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tristate "ITM Touch USB Touchscreen Driver"
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depends on USB && INPUT
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depends on USB && INPUT && !USB_TOUCHSCREEN_ITM
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---help---
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Say Y here if you want to use a ITM Touch USB
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Touchscreen controller.
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@ -226,7 +262,7 @@ config USB_ITMTOUCH
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config USB_EGALAX
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tristate "eGalax TouchKit USB Touchscreen Driver"
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depends on USB && INPUT
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depends on USB && INPUT && !USB_TOUCHSCREEN_EGALAX
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---help---
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Say Y here if you want to use a eGalax TouchKit USB
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Touchscreen controller.
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@ -37,6 +37,7 @@ obj-$(CONFIG_USB_MOUSE) += usbmouse.o
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obj-$(CONFIG_USB_MTOUCH) += mtouchusb.o
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obj-$(CONFIG_USB_ITMTOUCH) += itmtouch.o
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obj-$(CONFIG_USB_EGALAX) += touchkitusb.o
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obj-$(CONFIG_USB_TOUCHSCREEN) += usbtouchscreen.o
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obj-$(CONFIG_USB_POWERMATE) += powermate.o
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obj-$(CONFIG_USB_WACOM) += wacom.o
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obj-$(CONFIG_USB_ACECAD) += acecad.o
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@ -1372,6 +1372,8 @@ void hid_close(struct hid_device *hid)
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usb_kill_urb(hid->urbin);
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}
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#define USB_VENDOR_ID_PANJIT 0x134c
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/*
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* Initialize all reports
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*/
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@ -1701,6 +1703,11 @@ static const struct hid_blacklist {
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{ USB_VENDOR_ID_APPLE, 0x030A, HID_QUIRK_POWERBOOK_HAS_FN },
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{ USB_VENDOR_ID_APPLE, 0x030B, HID_QUIRK_POWERBOOK_HAS_FN },
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{ USB_VENDOR_ID_PANJIT, 0x0001, HID_QUIRK_IGNORE },
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{ USB_VENDOR_ID_PANJIT, 0x0002, HID_QUIRK_IGNORE },
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{ USB_VENDOR_ID_PANJIT, 0x0003, HID_QUIRK_IGNORE },
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{ USB_VENDOR_ID_PANJIT, 0x0004, HID_QUIRK_IGNORE },
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{ 0, 0 }
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};
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@ -0,0 +1,605 @@
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/******************************************************************************
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* usbtouchscreen.c
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* Driver for USB Touchscreens, supporting those devices:
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* - eGalax Touchkit
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* - 3M/Microtouch
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* - ITM
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* - PanJit TouchSet
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*
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* Copyright (C) 2004-2006 by Daniel Ritz <daniel.ritz@gmx.ch>
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* Copyright (C) by Todd E. Johnson (mtouchusb.c)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Driver is based on touchkitusb.c
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* - ITM parts are from itmtouch.c
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* - 3M parts are from mtouchusb.c
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* - PanJit parts are from an unmerged driver by Lanslott Gish
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*
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*****************************************************************************/
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//#define DEBUG
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#include <linux/config.h>
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/input.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/usb.h>
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#include <linux/usb_input.h>
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#define DRIVER_VERSION "v0.3"
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#define DRIVER_AUTHOR "Daniel Ritz <daniel.ritz@gmx.ch>"
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#define DRIVER_DESC "USB Touchscreen Driver"
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static int swap_xy;
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module_param(swap_xy, bool, 0644);
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MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped.");
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/* device specifc data/functions */
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struct usbtouch_usb;
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struct usbtouch_device_info {
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int min_xc, max_xc;
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int min_yc, max_yc;
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int min_press, max_press;
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int rept_size;
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int flags;
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void (*process_pkt) (struct usbtouch_usb *usbtouch, struct pt_regs *regs, unsigned char *pkt, int len);
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int (*read_data) (unsigned char *pkt, int *x, int *y, int *touch, int *press);
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int (*init) (struct usbtouch_usb *usbtouch);
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};
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#define USBTOUCH_FLG_BUFFER 0x01
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/* a usbtouch device */
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struct usbtouch_usb {
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unsigned char *data;
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dma_addr_t data_dma;
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unsigned char *buffer;
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int buf_len;
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struct urb *irq;
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struct usb_device *udev;
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struct input_dev *input;
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struct usbtouch_device_info *type;
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char name[128];
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char phys[64];
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};
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static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch,
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struct pt_regs *regs, unsigned char *pkt, int len);
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/* device types */
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enum {
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DEVTPYE_DUMMY = -1,
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DEVTYPE_EGALAX,
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DEVTYPE_PANJIT,
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DEVTYPE_3M,
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DEVTYPE_ITM,
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};
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static struct usb_device_id usbtouch_devices[] = {
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#ifdef CONFIG_USB_TOUCHSCREEN_EGALAX
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{USB_DEVICE(0x3823, 0x0001), .driver_info = DEVTYPE_EGALAX},
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{USB_DEVICE(0x0123, 0x0001), .driver_info = DEVTYPE_EGALAX},
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{USB_DEVICE(0x0eef, 0x0001), .driver_info = DEVTYPE_EGALAX},
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{USB_DEVICE(0x0eef, 0x0002), .driver_info = DEVTYPE_EGALAX},
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#endif
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#ifdef CONFIG_USB_TOUCHSCREEN_PANJIT
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{USB_DEVICE(0x134c, 0x0001), .driver_info = DEVTYPE_PANJIT},
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{USB_DEVICE(0x134c, 0x0002), .driver_info = DEVTYPE_PANJIT},
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{USB_DEVICE(0x134c, 0x0003), .driver_info = DEVTYPE_PANJIT},
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{USB_DEVICE(0x134c, 0x0004), .driver_info = DEVTYPE_PANJIT},
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#endif
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#ifdef CONFIG_USB_TOUCHSCREEN_3M
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{USB_DEVICE(0x0596, 0x0001), .driver_info = DEVTYPE_3M},
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#endif
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#ifdef CONFIG_USB_TOUCHSCREEN_ITM
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{USB_DEVICE(0x0403, 0xf9e9), .driver_info = DEVTYPE_ITM},
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#endif
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{}
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};
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/*****************************************************************************
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* eGalax part
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*/
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#ifdef CONFIG_USB_TOUCHSCREEN_EGALAX
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#define EGALAX_PKT_TYPE_MASK 0xFE
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#define EGALAX_PKT_TYPE_REPT 0x80
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#define EGALAX_PKT_TYPE_DIAG 0x0A
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static int egalax_read_data(unsigned char *pkt, int *x, int *y, int *touch, int *press)
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{
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if ((pkt[0] & EGALAX_PKT_TYPE_MASK) != EGALAX_PKT_TYPE_REPT)
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return 0;
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*x = ((pkt[3] & 0x0F) << 7) | (pkt[4] & 0x7F);
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*y = ((pkt[1] & 0x0F) << 7) | (pkt[2] & 0x7F);
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*touch = pkt[0] & 0x01;
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return 1;
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}
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static int egalax_get_pkt_len(unsigned char *buf)
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{
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switch (buf[0] & EGALAX_PKT_TYPE_MASK) {
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case EGALAX_PKT_TYPE_REPT:
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return 5;
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case EGALAX_PKT_TYPE_DIAG:
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return buf[1] + 2;
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}
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return 0;
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}
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static void egalax_process(struct usbtouch_usb *usbtouch, struct pt_regs *regs,
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unsigned char *pkt, int len)
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{
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unsigned char *buffer;
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int pkt_len, buf_len, pos;
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/* if the buffer contains data, append */
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if (unlikely(usbtouch->buf_len)) {
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int tmp;
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/* if only 1 byte in buffer, add another one to get length */
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if (usbtouch->buf_len == 1)
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usbtouch->buffer[1] = pkt[0];
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pkt_len = egalax_get_pkt_len(usbtouch->buffer);
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/* unknown packet: drop everything */
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if (!pkt_len)
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return;
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/* append, process */
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tmp = pkt_len - usbtouch->buf_len;
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memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, tmp);
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usbtouch_process_pkt(usbtouch, regs, usbtouch->buffer, pkt_len);
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buffer = pkt + tmp;
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buf_len = len - tmp;
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} else {
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buffer = pkt;
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buf_len = len;
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}
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/* only one byte left in buffer */
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if (unlikely(buf_len == 1)) {
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usbtouch->buffer[0] = buffer[0];
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usbtouch->buf_len = 1;
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return;
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}
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/* loop over the buffer */
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pos = 0;
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while (pos < buf_len) {
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/* get packet len */
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pkt_len = egalax_get_pkt_len(buffer + pos);
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/* unknown packet: drop everything */
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if (unlikely(!pkt_len))
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return;
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/* full packet: process */
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if (likely(pkt_len <= buf_len)) {
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usbtouch_process_pkt(usbtouch, regs, buffer + pos, pkt_len);
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} else {
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/* incomplete packet: save in buffer */
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memcpy(usbtouch->buffer, buffer + pos, buf_len - pos);
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usbtouch->buf_len = buf_len - pos;
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}
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pos += pkt_len;
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}
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}
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#endif
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/*****************************************************************************
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* PanJit Part
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*/
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#ifdef CONFIG_USB_TOUCHSCREEN_PANJIT
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static int panjit_read_data(unsigned char *pkt, int *x, int *y, int *touch, int *press)
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{
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*x = ((pkt[2] & 0x0F) << 8) | pkt[1];
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*y = ((pkt[4] & 0x0F) << 8) | pkt[3];
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*touch = pkt[0] & 0x01;
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return 1;
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}
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#endif
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/*****************************************************************************
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* 3M/Microtouch Part
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*/
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#ifdef CONFIG_USB_TOUCHSCREEN_3M
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#define MTOUCHUSB_ASYNC_REPORT 1
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#define MTOUCHUSB_RESET 7
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#define MTOUCHUSB_REQ_CTRLLR_ID 10
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static int mtouch_read_data(unsigned char *pkt, int *x, int *y, int *touch, int *press)
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{
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*x = (pkt[8] << 8) | pkt[7];
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*y = (pkt[10] << 8) | pkt[9];
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*touch = (pkt[2] & 0x40) ? 1 : 0;
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return 1;
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}
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static int mtouch_init(struct usbtouch_usb *usbtouch)
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{
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int ret;
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ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0),
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MTOUCHUSB_RESET,
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
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dbg("%s - usb_control_msg - MTOUCHUSB_RESET - bytes|err: %d",
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__FUNCTION__, ret);
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if (ret < 0)
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return ret;
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ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0),
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MTOUCHUSB_ASYNC_REPORT,
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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1, 1, NULL, 0, USB_CTRL_SET_TIMEOUT);
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dbg("%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d",
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__FUNCTION__, ret);
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if (ret < 0)
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return ret;
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return 0;
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}
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#endif
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/*****************************************************************************
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* ITM Part
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*/
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#ifdef CONFIG_USB_TOUCHSCREEN_ITM
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static int itm_read_data(unsigned char *pkt, int *x, int *y, int *touch, int *press)
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{
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*x = ((pkt[0] & 0x1F) << 7) | (pkt[3] & 0x7F);
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*x = ((pkt[1] & 0x1F) << 7) | (pkt[4] & 0x7F);
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*press = ((pkt[2] & 0x1F) << 7) | (pkt[5] & 0x7F);
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*touch = ~pkt[7] & 0x20;
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return 1;
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}
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#endif
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/*****************************************************************************
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* the different device descriptors
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*/
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static struct usbtouch_device_info usbtouch_dev_info[] = {
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#ifdef CONFIG_USB_TOUCHSCREEN_EGALAX
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[DEVTYPE_EGALAX] = {
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.min_xc = 0x0,
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.max_xc = 0x07ff,
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.min_yc = 0x0,
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.max_yc = 0x07ff,
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.rept_size = 16,
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.flags = USBTOUCH_FLG_BUFFER,
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.process_pkt = egalax_process,
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.read_data = egalax_read_data,
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},
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#endif
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#ifdef CONFIG_USB_TOUCHSCREEN_PANJIT
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[DEVTYPE_PANJIT] = {
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.min_xc = 0x0,
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.max_xc = 0x0fff,
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.min_yc = 0x0,
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.max_yc = 0x0fff,
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.rept_size = 8,
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.read_data = panjit_read_data,
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},
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#endif
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#ifdef CONFIG_USB_TOUCHSCREEN_3M
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[DEVTYPE_3M] = {
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.min_xc = 0x0,
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.max_xc = 0x4000,
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.min_yc = 0x0,
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.max_yc = 0x4000,
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.rept_size = 11,
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.read_data = mtouch_read_data,
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.init = mtouch_init,
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},
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#endif
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#ifdef CONFIG_USB_TOUCHSCREEN_ITM
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[DEVTYPE_ITM] = {
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.min_xc = 0x0,
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.max_xc = 0x0fff,
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.min_yc = 0x0,
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.max_yc = 0x0fff,
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.max_press = 0xff,
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.rept_size = 8,
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.read_data = itm_read_data,
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},
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#endif
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};
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/*****************************************************************************
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* Generic Part
|
||||
*/
|
||||
static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch,
|
||||
struct pt_regs *regs, unsigned char *pkt, int len)
|
||||
{
|
||||
int x, y, touch, press;
|
||||
struct usbtouch_device_info *type = usbtouch->type;
|
||||
|
||||
if (!type->read_data(pkt, &x, &y, &touch, &press))
|
||||
return;
|
||||
|
||||
input_regs(usbtouch->input, regs);
|
||||
input_report_key(usbtouch->input, BTN_TOUCH, touch);
|
||||
|
||||
if (swap_xy) {
|
||||
input_report_abs(usbtouch->input, ABS_X, y);
|
||||
input_report_abs(usbtouch->input, ABS_Y, x);
|
||||
} else {
|
||||
input_report_abs(usbtouch->input, ABS_X, x);
|
||||
input_report_abs(usbtouch->input, ABS_Y, y);
|
||||
}
|
||||
if (type->max_press)
|
||||
input_report_abs(usbtouch->input, ABS_PRESSURE, press);
|
||||
input_sync(usbtouch->input);
|
||||
}
|
||||
|
||||
|
||||
static void usbtouch_irq(struct urb *urb, struct pt_regs *regs)
|
||||
{
|
||||
struct usbtouch_usb *usbtouch = urb->context;
|
||||
int retval;
|
||||
|
||||
switch (urb->status) {
|
||||
case 0:
|
||||
/* success */
|
||||
break;
|
||||
case -ETIMEDOUT:
|
||||
/* 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;
|
||||
}
|
||||
|
||||
usbtouch->type->process_pkt(usbtouch, regs, usbtouch->data, 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 usbtouch_open(struct input_dev *input)
|
||||
{
|
||||
struct usbtouch_usb *usbtouch = input->private;
|
||||
|
||||
usbtouch->irq->dev = usbtouch->udev;
|
||||
|
||||
if (usb_submit_urb(usbtouch->irq, GFP_KERNEL))
|
||||
return -EIO;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void usbtouch_close(struct input_dev *input)
|
||||
{
|
||||
struct usbtouch_usb *usbtouch = input->private;
|
||||
|
||||
usb_kill_urb(usbtouch->irq);
|
||||
}
|
||||
|
||||
|
||||
static void usbtouch_free_buffers(struct usb_device *udev,
|
||||
struct usbtouch_usb *usbtouch)
|
||||
{
|
||||
if (usbtouch->data)
|
||||
usb_buffer_free(udev, usbtouch->type->rept_size,
|
||||
usbtouch->data, usbtouch->data_dma);
|
||||
kfree(usbtouch->buffer);
|
||||
}
|
||||
|
||||
|
||||
static int usbtouch_probe(struct usb_interface *intf,
|
||||
const struct usb_device_id *id)
|
||||
{
|
||||
struct usbtouch_usb *usbtouch;
|
||||
struct input_dev *input_dev;
|
||||
struct usb_host_interface *interface;
|
||||
struct usb_endpoint_descriptor *endpoint;
|
||||
struct usb_device *udev = interface_to_usbdev(intf);
|
||||
struct usbtouch_device_info *type;
|
||||
int err;
|
||||
|
||||
interface = intf->cur_altsetting;
|
||||
endpoint = &interface->endpoint[0].desc;
|
||||
|
||||
usbtouch = kzalloc(sizeof(struct usbtouch_usb), GFP_KERNEL);
|
||||
input_dev = input_allocate_device();
|
||||
if (!usbtouch || !input_dev)
|
||||
goto out_free;
|
||||
|
||||
type = &usbtouch_dev_info[id->driver_info];
|
||||
usbtouch->type = type;
|
||||
if (!type->process_pkt)
|
||||
type->process_pkt = usbtouch_process_pkt;
|
||||
|
||||
usbtouch->data = usb_buffer_alloc(udev, type->rept_size,
|
||||
SLAB_KERNEL, &usbtouch->data_dma);
|
||||
if (!usbtouch->data)
|
||||
goto out_free;
|
||||
|
||||
if (type->flags & USBTOUCH_FLG_BUFFER) {
|
||||
usbtouch->buffer = kmalloc(type->rept_size, GFP_KERNEL);
|
||||
if (!usbtouch->buffer)
|
||||
goto out_free_buffers;
|
||||
}
|
||||
|
||||
usbtouch->irq = usb_alloc_urb(0, GFP_KERNEL);
|
||||
if (!usbtouch->irq) {
|
||||
dbg("%s - usb_alloc_urb failed: usbtouch->irq", __FUNCTION__);
|
||||
goto out_free_buffers;
|
||||
}
|
||||
|
||||
usbtouch->udev = udev;
|
||||
usbtouch->input = input_dev;
|
||||
|
||||
if (udev->manufacturer)
|
||||
strlcpy(usbtouch->name, udev->manufacturer, sizeof(usbtouch->name));
|
||||
|
||||
if (udev->product) {
|
||||
if (udev->manufacturer)
|
||||
strlcat(usbtouch->name, " ", sizeof(usbtouch->name));
|
||||
strlcat(usbtouch->name, udev->product, sizeof(usbtouch->name));
|
||||
}
|
||||
|
||||
if (!strlen(usbtouch->name))
|
||||
snprintf(usbtouch->name, sizeof(usbtouch->name),
|
||||
"USB Touchscreen %04x:%04x",
|
||||
le16_to_cpu(udev->descriptor.idVendor),
|
||||
le16_to_cpu(udev->descriptor.idProduct));
|
||||
|
||||
usb_make_path(udev, usbtouch->phys, sizeof(usbtouch->phys));
|
||||
strlcpy(usbtouch->phys, "/input0", sizeof(usbtouch->phys));
|
||||
|
||||
input_dev->name = usbtouch->name;
|
||||
input_dev->phys = usbtouch->phys;
|
||||
usb_to_input_id(udev, &input_dev->id);
|
||||
input_dev->cdev.dev = &intf->dev;
|
||||
input_dev->private = usbtouch;
|
||||
input_dev->open = usbtouch_open;
|
||||
input_dev->close = usbtouch_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, type->min_xc, type->max_xc, 0, 0);
|
||||
input_set_abs_params(input_dev, ABS_Y, type->min_yc, type->max_yc, 0, 0);
|
||||
if (type->max_press)
|
||||
input_set_abs_params(input_dev, ABS_PRESSURE, type->min_press,
|
||||
type->max_press, 0, 0);
|
||||
|
||||
usb_fill_int_urb(usbtouch->irq, usbtouch->udev,
|
||||
usb_rcvintpipe(usbtouch->udev, 0x81),
|
||||
usbtouch->data, type->rept_size,
|
||||
usbtouch_irq, usbtouch, endpoint->bInterval);
|
||||
|
||||
usbtouch->irq->transfer_dma = usbtouch->data_dma;
|
||||
usbtouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
|
||||
|
||||
/* device specific init */
|
||||
if (type->init) {
|
||||
err = type->init(usbtouch);
|
||||
if (err) {
|
||||
dbg("%s - type->init() failed, err: %d", __FUNCTION__, err);
|
||||
goto out_free_buffers;
|
||||
}
|
||||
}
|
||||
|
||||
err = input_register_device(usbtouch->input);
|
||||
if (err) {
|
||||
dbg("%s - input_register_device failed, err: %d", __FUNCTION__, err);
|
||||
goto out_free_buffers;
|
||||
}
|
||||
|
||||
usb_set_intfdata(intf, usbtouch);
|
||||
|
||||
return 0;
|
||||
|
||||
out_free_buffers:
|
||||
usbtouch_free_buffers(udev, usbtouch);
|
||||
out_free:
|
||||
input_free_device(input_dev);
|
||||
kfree(usbtouch);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
static void usbtouch_disconnect(struct usb_interface *intf)
|
||||
{
|
||||
struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
|
||||
|
||||
dbg("%s - called", __FUNCTION__);
|
||||
|
||||
if (!usbtouch)
|
||||
return;
|
||||
|
||||
dbg("%s - usbtouch is initialized, cleaning up", __FUNCTION__);
|
||||
usb_set_intfdata(intf, NULL);
|
||||
usb_kill_urb(usbtouch->irq);
|
||||
input_unregister_device(usbtouch->input);
|
||||
usb_free_urb(usbtouch->irq);
|
||||
usbtouch_free_buffers(interface_to_usbdev(intf), usbtouch);
|
||||
kfree(usbtouch);
|
||||
}
|
||||
|
||||
MODULE_DEVICE_TABLE(usb, usbtouch_devices);
|
||||
|
||||
static struct usb_driver usbtouch_driver = {
|
||||
.name = "usbtouchscreen",
|
||||
.probe = usbtouch_probe,
|
||||
.disconnect = usbtouch_disconnect,
|
||||
.id_table = usbtouch_devices,
|
||||
};
|
||||
|
||||
static int __init usbtouch_init(void)
|
||||
{
|
||||
return usb_register(&usbtouch_driver);
|
||||
}
|
||||
|
||||
static void __exit usbtouch_cleanup(void)
|
||||
{
|
||||
usb_deregister(&usbtouch_driver);
|
||||
}
|
||||
|
||||
module_init(usbtouch_init);
|
||||
module_exit(usbtouch_cleanup);
|
||||
|
||||
MODULE_AUTHOR(DRIVER_AUTHOR);
|
||||
MODULE_DESCRIPTION(DRIVER_DESC);
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
MODULE_ALIAS("touchkitusb");
|
||||
MODULE_ALIAS("itmtouch");
|
||||
MODULE_ALIAS("mtouchusb");
|
||||
Loading…
Reference in New Issue