1859 lines
45 KiB
C
1859 lines
45 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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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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* includes eTurboTouch CT-410/510/700
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* - 3M/Microtouch EX II series
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* - ITM
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* - PanJit TouchSet
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* - eTurboTouch
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* - Gunze AHL61
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* - DMC TSC-10/25
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* - IRTOUCHSYSTEMS/UNITOP
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* - IdealTEK URTC1000
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* - General Touch
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* - GoTop Super_Q2/GogoPen/PenPower tablets
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* - JASTEC USB touch controller/DigiTech DTR-02U
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* - Zytronic capacitive touchscreen
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* - NEXIO/iNexio
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* - Elo TouchSystems 2700 IntelliTouch
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* - EasyTouch USB Dual/Multi touch controller from Data Modul
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*
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* Copyright (C) 2004-2007 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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* 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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* - DMC TSC 10/25 are from Holger Schurig, with ideas from an unmerged
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* driver from Marius Vollmer
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*
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*****************************************************************************/
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//#define DEBUG
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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/usb.h>
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#include <linux/usb/input.h>
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#include <linux/hid.h>
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#include <linux/mutex.h>
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static bool 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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static bool hwcalib_xy;
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module_param(hwcalib_xy, bool, 0644);
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MODULE_PARM_DESC(hwcalib_xy, "If set hw-calibrated X/Y are used if available");
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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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/*
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* Always service the USB devices irq not just when the input device is
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* open. This is useful when devices have a watchdog which prevents us
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* from periodically polling the device. Leave this unset unless your
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* touchscreen device requires it, as it does consume more of the USB
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* bandwidth.
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*/
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bool irq_always;
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void (*process_pkt) (struct usbtouch_usb *usbtouch, unsigned char *pkt, int len);
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/*
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* used to get the packet len. possible return values:
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* > 0: packet len
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* = 0: skip one byte
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* < 0: -return value more bytes needed
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*/
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int (*get_pkt_len) (unsigned char *pkt, int len);
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int (*read_data) (struct usbtouch_usb *usbtouch, unsigned char *pkt);
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int (*alloc) (struct usbtouch_usb *usbtouch);
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int (*init) (struct usbtouch_usb *usbtouch);
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void (*exit) (struct usbtouch_usb *usbtouch);
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};
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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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int data_size;
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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_interface *interface;
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struct input_dev *input;
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struct usbtouch_device_info *type;
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struct mutex pm_mutex; /* serialize access to open/suspend */
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bool is_open;
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char name[128];
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char phys[64];
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void *priv;
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int x, y;
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int touch, press;
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};
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/* device types */
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enum {
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DEVTYPE_IGNORE = -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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DEVTYPE_ETURBO,
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DEVTYPE_GUNZE,
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DEVTYPE_DMC_TSC10,
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DEVTYPE_IRTOUCH,
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DEVTYPE_IRTOUCH_HIRES,
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DEVTYPE_IDEALTEK,
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DEVTYPE_GENERAL_TOUCH,
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DEVTYPE_GOTOP,
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DEVTYPE_JASTEC,
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DEVTYPE_E2I,
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DEVTYPE_ZYTRONIC,
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DEVTYPE_TC45USB,
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DEVTYPE_NEXIO,
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DEVTYPE_ELO,
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DEVTYPE_ETOUCH,
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};
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#define USB_DEVICE_HID_CLASS(vend, prod) \
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.match_flags = USB_DEVICE_ID_MATCH_INT_CLASS \
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| USB_DEVICE_ID_MATCH_DEVICE, \
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.idVendor = (vend), \
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.idProduct = (prod), \
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.bInterfaceClass = USB_INTERFACE_CLASS_HID
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static const struct usb_device_id usbtouch_devices[] = {
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#ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
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/* ignore the HID capable devices, handled by usbhid */
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{USB_DEVICE_HID_CLASS(0x0eef, 0x0001), .driver_info = DEVTYPE_IGNORE},
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{USB_DEVICE_HID_CLASS(0x0eef, 0x0002), .driver_info = DEVTYPE_IGNORE},
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/* normal device IDs */
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{USB_DEVICE(0x3823, 0x0001), .driver_info = DEVTYPE_EGALAX},
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{USB_DEVICE(0x3823, 0x0002), .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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{USB_DEVICE(0x1234, 0x0001), .driver_info = DEVTYPE_EGALAX},
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{USB_DEVICE(0x1234, 0x0002), .driver_info = DEVTYPE_EGALAX},
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#endif
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#ifdef CONFIG_TOUCHSCREEN_USB_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_TOUCHSCREEN_USB_3M
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{USB_DEVICE(0x0596, 0x0001), .driver_info = DEVTYPE_3M},
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#endif
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#ifdef CONFIG_TOUCHSCREEN_USB_ITM
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{USB_DEVICE(0x0403, 0xf9e9), .driver_info = DEVTYPE_ITM},
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{USB_DEVICE(0x16e3, 0xf9e9), .driver_info = DEVTYPE_ITM},
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#endif
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#ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
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{USB_DEVICE(0x1234, 0x5678), .driver_info = DEVTYPE_ETURBO},
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#endif
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#ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
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{USB_DEVICE(0x0637, 0x0001), .driver_info = DEVTYPE_GUNZE},
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#endif
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#ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
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{USB_DEVICE(0x0afa, 0x03e8), .driver_info = DEVTYPE_DMC_TSC10},
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#endif
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#ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
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{USB_DEVICE(0x595a, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
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{USB_DEVICE(0x6615, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
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{USB_DEVICE(0x6615, 0x0012), .driver_info = DEVTYPE_IRTOUCH_HIRES},
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#endif
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#ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
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{USB_DEVICE(0x1391, 0x1000), .driver_info = DEVTYPE_IDEALTEK},
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#endif
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#ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
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{USB_DEVICE(0x0dfc, 0x0001), .driver_info = DEVTYPE_GENERAL_TOUCH},
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#endif
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#ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
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{USB_DEVICE(0x08f2, 0x007f), .driver_info = DEVTYPE_GOTOP},
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{USB_DEVICE(0x08f2, 0x00ce), .driver_info = DEVTYPE_GOTOP},
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{USB_DEVICE(0x08f2, 0x00f4), .driver_info = DEVTYPE_GOTOP},
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#endif
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#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
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{USB_DEVICE(0x0f92, 0x0001), .driver_info = DEVTYPE_JASTEC},
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#endif
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#ifdef CONFIG_TOUCHSCREEN_USB_E2I
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{USB_DEVICE(0x1ac7, 0x0001), .driver_info = DEVTYPE_E2I},
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#endif
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#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
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{USB_DEVICE(0x14c8, 0x0003), .driver_info = DEVTYPE_ZYTRONIC},
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#endif
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#ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
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/* TC5UH */
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{USB_DEVICE(0x0664, 0x0309), .driver_info = DEVTYPE_TC45USB},
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/* TC4UM */
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{USB_DEVICE(0x0664, 0x0306), .driver_info = DEVTYPE_TC45USB},
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#endif
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#ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
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/* data interface only */
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{USB_DEVICE_AND_INTERFACE_INFO(0x10f0, 0x2002, 0x0a, 0x00, 0x00),
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.driver_info = DEVTYPE_NEXIO},
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{USB_DEVICE_AND_INTERFACE_INFO(0x1870, 0x0001, 0x0a, 0x00, 0x00),
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.driver_info = DEVTYPE_NEXIO},
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#endif
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#ifdef CONFIG_TOUCHSCREEN_USB_ELO
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{USB_DEVICE(0x04e7, 0x0020), .driver_info = DEVTYPE_ELO},
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#endif
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#ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
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{USB_DEVICE(0x7374, 0x0001), .driver_info = DEVTYPE_ETOUCH},
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#endif
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{}
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};
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/*****************************************************************************
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* e2i Part
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*/
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#ifdef CONFIG_TOUCHSCREEN_USB_E2I
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static int e2i_init(struct usbtouch_usb *usbtouch)
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{
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int ret;
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struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
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ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
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0x01, 0x02, 0x0000, 0x0081,
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NULL, 0, USB_CTRL_SET_TIMEOUT);
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dev_dbg(&usbtouch->interface->dev,
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"%s - usb_control_msg - E2I_RESET - bytes|err: %d\n",
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__func__, ret);
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return ret;
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}
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static int e2i_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
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{
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int tmp = (pkt[0] << 8) | pkt[1];
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dev->x = (pkt[2] << 8) | pkt[3];
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dev->y = (pkt[4] << 8) | pkt[5];
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tmp = tmp - 0xA000;
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dev->touch = (tmp > 0);
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dev->press = (tmp > 0 ? tmp : 0);
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return 1;
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}
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#endif
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/*****************************************************************************
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* eGalax part
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*/
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#ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
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#ifndef MULTI_PACKET
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#define MULTI_PACKET
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#endif
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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_init(struct usbtouch_usb *usbtouch)
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{
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int ret, i;
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unsigned char *buf;
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struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
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/*
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* An eGalax diagnostic packet kicks the device into using the right
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* protocol. We send a "check active" packet. The response will be
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* read later and ignored.
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*/
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buf = kmalloc(3, GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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buf[0] = EGALAX_PKT_TYPE_DIAG;
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buf[1] = 1; /* length */
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buf[2] = 'A'; /* command - check active */
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for (i = 0; i < 3; i++) {
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ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
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0,
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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0, 0, buf, 3,
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USB_CTRL_SET_TIMEOUT);
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if (ret >= 0) {
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ret = 0;
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break;
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}
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if (ret != -EPIPE)
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break;
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}
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kfree(buf);
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return ret;
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}
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static int egalax_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
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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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dev->x = ((pkt[3] & 0x0F) << 7) | (pkt[4] & 0x7F);
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dev->y = ((pkt[1] & 0x0F) << 7) | (pkt[2] & 0x7F);
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dev->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, int len)
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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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if (len < 2)
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return -1;
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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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#endif
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/*****************************************************************************
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* EasyTouch part
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*/
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#ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
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#ifndef MULTI_PACKET
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#define MULTI_PACKET
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#endif
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#define ETOUCH_PKT_TYPE_MASK 0xFE
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#define ETOUCH_PKT_TYPE_REPT 0x80
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#define ETOUCH_PKT_TYPE_REPT2 0xB0
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#define ETOUCH_PKT_TYPE_DIAG 0x0A
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static int etouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
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{
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if ((pkt[0] & ETOUCH_PKT_TYPE_MASK) != ETOUCH_PKT_TYPE_REPT &&
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(pkt[0] & ETOUCH_PKT_TYPE_MASK) != ETOUCH_PKT_TYPE_REPT2)
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return 0;
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dev->x = ((pkt[1] & 0x1F) << 7) | (pkt[2] & 0x7F);
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dev->y = ((pkt[3] & 0x1F) << 7) | (pkt[4] & 0x7F);
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dev->touch = pkt[0] & 0x01;
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return 1;
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}
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static int etouch_get_pkt_len(unsigned char *buf, int len)
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{
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switch (buf[0] & ETOUCH_PKT_TYPE_MASK) {
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case ETOUCH_PKT_TYPE_REPT:
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case ETOUCH_PKT_TYPE_REPT2:
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return 5;
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case ETOUCH_PKT_TYPE_DIAG:
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if (len < 2)
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return -1;
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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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#endif
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/*****************************************************************************
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* PanJit Part
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*/
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#ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
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static int panjit_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
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{
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dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1];
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dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3];
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dev->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_TOUCHSCREEN_USB_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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#define MTOUCHUSB_REQ_CTRLLR_ID_LEN 16
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static int mtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
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{
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if (hwcalib_xy) {
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dev->x = (pkt[4] << 8) | pkt[3];
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dev->y = 0xffff - ((pkt[6] << 8) | pkt[5]);
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} else {
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dev->x = (pkt[8] << 8) | pkt[7];
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dev->y = (pkt[10] << 8) | pkt[9];
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}
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dev->touch = (pkt[2] & 0x40) ? 1 : 0;
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return 1;
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}
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struct mtouch_priv {
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u8 fw_rev_major;
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u8 fw_rev_minor;
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};
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static ssize_t mtouch_firmware_rev_show(struct device *dev,
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struct device_attribute *attr, char *output)
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{
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struct usb_interface *intf = to_usb_interface(dev);
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struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
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struct mtouch_priv *priv = usbtouch->priv;
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return scnprintf(output, PAGE_SIZE, "%1x.%1x\n",
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priv->fw_rev_major, priv->fw_rev_minor);
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}
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static DEVICE_ATTR(firmware_rev, 0444, mtouch_firmware_rev_show, NULL);
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static struct attribute *mtouch_attrs[] = {
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&dev_attr_firmware_rev.attr,
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NULL
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};
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static const struct attribute_group mtouch_attr_group = {
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.attrs = mtouch_attrs,
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};
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static int mtouch_get_fw_revision(struct usbtouch_usb *usbtouch)
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{
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struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
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struct mtouch_priv *priv = usbtouch->priv;
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u8 *buf;
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int ret;
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buf = kzalloc(MTOUCHUSB_REQ_CTRLLR_ID_LEN, GFP_NOIO);
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if (!buf)
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return -ENOMEM;
|
|
|
|
ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
|
|
MTOUCHUSB_REQ_CTRLLR_ID,
|
|
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
|
0, 0, buf, MTOUCHUSB_REQ_CTRLLR_ID_LEN,
|
|
USB_CTRL_SET_TIMEOUT);
|
|
if (ret != MTOUCHUSB_REQ_CTRLLR_ID_LEN) {
|
|
dev_warn(&usbtouch->interface->dev,
|
|
"Failed to read FW rev: %d\n", ret);
|
|
ret = ret < 0 ? ret : -EIO;
|
|
goto free;
|
|
}
|
|
|
|
priv->fw_rev_major = buf[3];
|
|
priv->fw_rev_minor = buf[4];
|
|
|
|
ret = 0;
|
|
|
|
free:
|
|
kfree(buf);
|
|
return ret;
|
|
}
|
|
|
|
static int mtouch_alloc(struct usbtouch_usb *usbtouch)
|
|
{
|
|
int ret;
|
|
|
|
usbtouch->priv = kmalloc(sizeof(struct mtouch_priv), GFP_KERNEL);
|
|
if (!usbtouch->priv)
|
|
return -ENOMEM;
|
|
|
|
ret = sysfs_create_group(&usbtouch->interface->dev.kobj,
|
|
&mtouch_attr_group);
|
|
if (ret) {
|
|
kfree(usbtouch->priv);
|
|
usbtouch->priv = NULL;
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mtouch_init(struct usbtouch_usb *usbtouch)
|
|
{
|
|
int ret, i;
|
|
struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
|
|
|
|
ret = mtouch_get_fw_revision(usbtouch);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
|
|
MTOUCHUSB_RESET,
|
|
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
|
1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
|
|
dev_dbg(&usbtouch->interface->dev,
|
|
"%s - usb_control_msg - MTOUCHUSB_RESET - bytes|err: %d\n",
|
|
__func__, ret);
|
|
if (ret < 0)
|
|
return ret;
|
|
msleep(150);
|
|
|
|
for (i = 0; i < 3; i++) {
|
|
ret = usb_control_msg(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);
|
|
dev_dbg(&usbtouch->interface->dev,
|
|
"%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d\n",
|
|
__func__, ret);
|
|
if (ret >= 0)
|
|
break;
|
|
if (ret != -EPIPE)
|
|
return ret;
|
|
}
|
|
|
|
/* Default min/max xy are the raw values, override if using hw-calib */
|
|
if (hwcalib_xy) {
|
|
input_set_abs_params(usbtouch->input, ABS_X, 0, 0xffff, 0, 0);
|
|
input_set_abs_params(usbtouch->input, ABS_Y, 0, 0xffff, 0, 0);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void mtouch_exit(struct usbtouch_usb *usbtouch)
|
|
{
|
|
struct mtouch_priv *priv = usbtouch->priv;
|
|
|
|
sysfs_remove_group(&usbtouch->interface->dev.kobj, &mtouch_attr_group);
|
|
kfree(priv);
|
|
}
|
|
#endif
|
|
|
|
|
|
/*****************************************************************************
|
|
* ITM Part
|
|
*/
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_ITM
|
|
static int itm_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
|
|
{
|
|
int touch;
|
|
/*
|
|
* ITM devices report invalid x/y data if not touched.
|
|
* if the screen was touched before but is not touched any more
|
|
* report touch as 0 with the last valid x/y data once. then stop
|
|
* reporting data until touched again.
|
|
*/
|
|
dev->press = ((pkt[2] & 0x01) << 7) | (pkt[5] & 0x7F);
|
|
|
|
touch = ~pkt[7] & 0x20;
|
|
if (!touch) {
|
|
if (dev->touch) {
|
|
dev->touch = 0;
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[3] & 0x7F);
|
|
dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[4] & 0x7F);
|
|
dev->touch = touch;
|
|
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
|
|
/*****************************************************************************
|
|
* eTurboTouch part
|
|
*/
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
|
|
#ifndef MULTI_PACKET
|
|
#define MULTI_PACKET
|
|
#endif
|
|
static int eturbo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
|
|
{
|
|
unsigned int shift;
|
|
|
|
/* packets should start with sync */
|
|
if (!(pkt[0] & 0x80))
|
|
return 0;
|
|
|
|
shift = (6 - (pkt[0] & 0x03));
|
|
dev->x = ((pkt[3] << 7) | pkt[4]) >> shift;
|
|
dev->y = ((pkt[1] << 7) | pkt[2]) >> shift;
|
|
dev->touch = (pkt[0] & 0x10) ? 1 : 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int eturbo_get_pkt_len(unsigned char *buf, int len)
|
|
{
|
|
if (buf[0] & 0x80)
|
|
return 5;
|
|
if (buf[0] == 0x01)
|
|
return 3;
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
|
|
/*****************************************************************************
|
|
* Gunze part
|
|
*/
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
|
|
static int gunze_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
|
|
{
|
|
if (!(pkt[0] & 0x80) || ((pkt[1] | pkt[2] | pkt[3]) & 0x80))
|
|
return 0;
|
|
|
|
dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[2] & 0x7F);
|
|
dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[3] & 0x7F);
|
|
dev->touch = pkt[0] & 0x20;
|
|
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
/*****************************************************************************
|
|
* DMC TSC-10/25 Part
|
|
*
|
|
* Documentation about the controller and it's protocol can be found at
|
|
* http://www.dmccoltd.com/files/controler/tsc10usb_pi_e.pdf
|
|
* http://www.dmccoltd.com/files/controler/tsc25_usb_e.pdf
|
|
*/
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
|
|
|
|
/* supported data rates. currently using 130 */
|
|
#define TSC10_RATE_POINT 0x50
|
|
#define TSC10_RATE_30 0x40
|
|
#define TSC10_RATE_50 0x41
|
|
#define TSC10_RATE_80 0x42
|
|
#define TSC10_RATE_100 0x43
|
|
#define TSC10_RATE_130 0x44
|
|
#define TSC10_RATE_150 0x45
|
|
|
|
/* commands */
|
|
#define TSC10_CMD_RESET 0x55
|
|
#define TSC10_CMD_RATE 0x05
|
|
#define TSC10_CMD_DATA1 0x01
|
|
|
|
static int dmc_tsc10_init(struct usbtouch_usb *usbtouch)
|
|
{
|
|
struct usb_device *dev = interface_to_usbdev(usbtouch->interface);
|
|
int ret = -ENOMEM;
|
|
unsigned char *buf;
|
|
|
|
buf = kmalloc(2, GFP_NOIO);
|
|
if (!buf)
|
|
goto err_nobuf;
|
|
/* reset */
|
|
buf[0] = buf[1] = 0xFF;
|
|
ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
|
|
TSC10_CMD_RESET,
|
|
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
|
0, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
|
|
if (ret < 0)
|
|
goto err_out;
|
|
if (buf[0] != 0x06) {
|
|
ret = -ENODEV;
|
|
goto err_out;
|
|
}
|
|
|
|
/* TSC-25 data sheet specifies a delay after the RESET command */
|
|
msleep(150);
|
|
|
|
/* set coordinate output rate */
|
|
buf[0] = buf[1] = 0xFF;
|
|
ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
|
|
TSC10_CMD_RATE,
|
|
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
|
TSC10_RATE_150, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
|
|
if (ret < 0)
|
|
goto err_out;
|
|
if ((buf[0] != 0x06) && (buf[0] != 0x15 || buf[1] != 0x01)) {
|
|
ret = -ENODEV;
|
|
goto err_out;
|
|
}
|
|
|
|
/* start sending data */
|
|
ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
|
|
TSC10_CMD_DATA1,
|
|
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
|
0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
|
|
err_out:
|
|
kfree(buf);
|
|
err_nobuf:
|
|
return ret;
|
|
}
|
|
|
|
|
|
static int dmc_tsc10_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
|
|
{
|
|
dev->x = ((pkt[2] & 0x03) << 8) | pkt[1];
|
|
dev->y = ((pkt[4] & 0x03) << 8) | pkt[3];
|
|
dev->touch = pkt[0] & 0x01;
|
|
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
|
|
/*****************************************************************************
|
|
* IRTOUCH Part
|
|
*/
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
|
|
static int irtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
|
|
{
|
|
dev->x = (pkt[3] << 8) | pkt[2];
|
|
dev->y = (pkt[5] << 8) | pkt[4];
|
|
dev->touch = (pkt[1] & 0x03) ? 1 : 0;
|
|
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
/*****************************************************************************
|
|
* ET&T TC5UH/TC4UM part
|
|
*/
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
|
|
static int tc45usb_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
|
|
{
|
|
dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1];
|
|
dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3];
|
|
dev->touch = pkt[0] & 0x01;
|
|
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
/*****************************************************************************
|
|
* IdealTEK URTC1000 Part
|
|
*/
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
|
|
#ifndef MULTI_PACKET
|
|
#define MULTI_PACKET
|
|
#endif
|
|
static int idealtek_get_pkt_len(unsigned char *buf, int len)
|
|
{
|
|
if (buf[0] & 0x80)
|
|
return 5;
|
|
if (buf[0] == 0x01)
|
|
return len;
|
|
return 0;
|
|
}
|
|
|
|
static int idealtek_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
|
|
{
|
|
switch (pkt[0] & 0x98) {
|
|
case 0x88:
|
|
/* touch data in IdealTEK mode */
|
|
dev->x = (pkt[1] << 5) | (pkt[2] >> 2);
|
|
dev->y = (pkt[3] << 5) | (pkt[4] >> 2);
|
|
dev->touch = (pkt[0] & 0x40) ? 1 : 0;
|
|
return 1;
|
|
|
|
case 0x98:
|
|
/* touch data in MT emulation mode */
|
|
dev->x = (pkt[2] << 5) | (pkt[1] >> 2);
|
|
dev->y = (pkt[4] << 5) | (pkt[3] >> 2);
|
|
dev->touch = (pkt[0] & 0x40) ? 1 : 0;
|
|
return 1;
|
|
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/*****************************************************************************
|
|
* General Touch Part
|
|
*/
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
|
|
static int general_touch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
|
|
{
|
|
dev->x = (pkt[2] << 8) | pkt[1];
|
|
dev->y = (pkt[4] << 8) | pkt[3];
|
|
dev->press = pkt[5] & 0xff;
|
|
dev->touch = pkt[0] & 0x01;
|
|
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
/*****************************************************************************
|
|
* GoTop Part
|
|
*/
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
|
|
static int gotop_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
|
|
{
|
|
dev->x = ((pkt[1] & 0x38) << 4) | pkt[2];
|
|
dev->y = ((pkt[1] & 0x07) << 7) | pkt[3];
|
|
dev->touch = pkt[0] & 0x01;
|
|
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
/*****************************************************************************
|
|
* JASTEC Part
|
|
*/
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
|
|
static int jastec_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
|
|
{
|
|
dev->x = ((pkt[0] & 0x3f) << 6) | (pkt[2] & 0x3f);
|
|
dev->y = ((pkt[1] & 0x3f) << 6) | (pkt[3] & 0x3f);
|
|
dev->touch = (pkt[0] & 0x40) >> 6;
|
|
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
/*****************************************************************************
|
|
* Zytronic Part
|
|
*/
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
|
|
static int zytronic_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
|
|
{
|
|
struct usb_interface *intf = dev->interface;
|
|
|
|
switch (pkt[0]) {
|
|
case 0x3A: /* command response */
|
|
dev_dbg(&intf->dev, "%s: Command response %d\n", __func__, pkt[1]);
|
|
break;
|
|
|
|
case 0xC0: /* down */
|
|
dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7);
|
|
dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7);
|
|
dev->touch = 1;
|
|
dev_dbg(&intf->dev, "%s: down %d,%d\n", __func__, dev->x, dev->y);
|
|
return 1;
|
|
|
|
case 0x80: /* up */
|
|
dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7);
|
|
dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7);
|
|
dev->touch = 0;
|
|
dev_dbg(&intf->dev, "%s: up %d,%d\n", __func__, dev->x, dev->y);
|
|
return 1;
|
|
|
|
default:
|
|
dev_dbg(&intf->dev, "%s: Unknown return %d\n", __func__, pkt[0]);
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/*****************************************************************************
|
|
* NEXIO Part
|
|
*/
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
|
|
|
|
#define NEXIO_TIMEOUT 5000
|
|
#define NEXIO_BUFSIZE 1024
|
|
#define NEXIO_THRESHOLD 50
|
|
|
|
struct nexio_priv {
|
|
struct urb *ack;
|
|
unsigned char *ack_buf;
|
|
};
|
|
|
|
struct nexio_touch_packet {
|
|
u8 flags; /* 0xe1 = touch, 0xe1 = release */
|
|
__be16 data_len; /* total bytes of touch data */
|
|
__be16 x_len; /* bytes for X axis */
|
|
__be16 y_len; /* bytes for Y axis */
|
|
u8 data[];
|
|
} __attribute__ ((packed));
|
|
|
|
static unsigned char nexio_ack_pkt[2] = { 0xaa, 0x02 };
|
|
static unsigned char nexio_init_pkt[4] = { 0x82, 0x04, 0x0a, 0x0f };
|
|
|
|
static void nexio_ack_complete(struct urb *urb)
|
|
{
|
|
}
|
|
|
|
static int nexio_alloc(struct usbtouch_usb *usbtouch)
|
|
{
|
|
struct nexio_priv *priv;
|
|
int ret = -ENOMEM;
|
|
|
|
usbtouch->priv = kmalloc(sizeof(struct nexio_priv), GFP_KERNEL);
|
|
if (!usbtouch->priv)
|
|
goto out_buf;
|
|
|
|
priv = usbtouch->priv;
|
|
|
|
priv->ack_buf = kmemdup(nexio_ack_pkt, sizeof(nexio_ack_pkt),
|
|
GFP_KERNEL);
|
|
if (!priv->ack_buf)
|
|
goto err_priv;
|
|
|
|
priv->ack = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!priv->ack) {
|
|
dev_dbg(&usbtouch->interface->dev,
|
|
"%s - usb_alloc_urb failed: usbtouch->ack\n", __func__);
|
|
goto err_ack_buf;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_ack_buf:
|
|
kfree(priv->ack_buf);
|
|
err_priv:
|
|
kfree(priv);
|
|
out_buf:
|
|
return ret;
|
|
}
|
|
|
|
static int nexio_init(struct usbtouch_usb *usbtouch)
|
|
{
|
|
struct usb_device *dev = interface_to_usbdev(usbtouch->interface);
|
|
struct usb_host_interface *interface = usbtouch->interface->cur_altsetting;
|
|
struct nexio_priv *priv = usbtouch->priv;
|
|
int ret = -ENOMEM;
|
|
int actual_len, i;
|
|
unsigned char *buf;
|
|
char *firmware_ver = NULL, *device_name = NULL;
|
|
int input_ep = 0, output_ep = 0;
|
|
|
|
/* find first input and output endpoint */
|
|
for (i = 0; i < interface->desc.bNumEndpoints; i++) {
|
|
if (!input_ep &&
|
|
usb_endpoint_dir_in(&interface->endpoint[i].desc))
|
|
input_ep = interface->endpoint[i].desc.bEndpointAddress;
|
|
if (!output_ep &&
|
|
usb_endpoint_dir_out(&interface->endpoint[i].desc))
|
|
output_ep = interface->endpoint[i].desc.bEndpointAddress;
|
|
}
|
|
if (!input_ep || !output_ep)
|
|
return -ENXIO;
|
|
|
|
buf = kmalloc(NEXIO_BUFSIZE, GFP_NOIO);
|
|
if (!buf)
|
|
goto out_buf;
|
|
|
|
/* two empty reads */
|
|
for (i = 0; i < 2; i++) {
|
|
ret = usb_bulk_msg(dev, usb_rcvbulkpipe(dev, input_ep),
|
|
buf, NEXIO_BUFSIZE, &actual_len,
|
|
NEXIO_TIMEOUT);
|
|
if (ret < 0)
|
|
goto out_buf;
|
|
}
|
|
|
|
/* send init command */
|
|
memcpy(buf, nexio_init_pkt, sizeof(nexio_init_pkt));
|
|
ret = usb_bulk_msg(dev, usb_sndbulkpipe(dev, output_ep),
|
|
buf, sizeof(nexio_init_pkt), &actual_len,
|
|
NEXIO_TIMEOUT);
|
|
if (ret < 0)
|
|
goto out_buf;
|
|
|
|
/* read replies */
|
|
for (i = 0; i < 3; i++) {
|
|
memset(buf, 0, NEXIO_BUFSIZE);
|
|
ret = usb_bulk_msg(dev, usb_rcvbulkpipe(dev, input_ep),
|
|
buf, NEXIO_BUFSIZE, &actual_len,
|
|
NEXIO_TIMEOUT);
|
|
if (ret < 0 || actual_len < 1 || buf[1] != actual_len)
|
|
continue;
|
|
switch (buf[0]) {
|
|
case 0x83: /* firmware version */
|
|
if (!firmware_ver)
|
|
firmware_ver = kstrdup(&buf[2], GFP_NOIO);
|
|
break;
|
|
case 0x84: /* device name */
|
|
if (!device_name)
|
|
device_name = kstrdup(&buf[2], GFP_NOIO);
|
|
break;
|
|
}
|
|
}
|
|
|
|
printk(KERN_INFO "Nexio device: %s, firmware version: %s\n",
|
|
device_name, firmware_ver);
|
|
|
|
kfree(firmware_ver);
|
|
kfree(device_name);
|
|
|
|
usb_fill_bulk_urb(priv->ack, dev, usb_sndbulkpipe(dev, output_ep),
|
|
priv->ack_buf, sizeof(nexio_ack_pkt),
|
|
nexio_ack_complete, usbtouch);
|
|
ret = 0;
|
|
|
|
out_buf:
|
|
kfree(buf);
|
|
return ret;
|
|
}
|
|
|
|
static void nexio_exit(struct usbtouch_usb *usbtouch)
|
|
{
|
|
struct nexio_priv *priv = usbtouch->priv;
|
|
|
|
usb_kill_urb(priv->ack);
|
|
usb_free_urb(priv->ack);
|
|
kfree(priv->ack_buf);
|
|
kfree(priv);
|
|
}
|
|
|
|
static int nexio_read_data(struct usbtouch_usb *usbtouch, unsigned char *pkt)
|
|
{
|
|
struct nexio_touch_packet *packet = (void *) pkt;
|
|
struct nexio_priv *priv = usbtouch->priv;
|
|
unsigned int data_len = be16_to_cpu(packet->data_len);
|
|
unsigned int x_len = be16_to_cpu(packet->x_len);
|
|
unsigned int y_len = be16_to_cpu(packet->y_len);
|
|
int x, y, begin_x, begin_y, end_x, end_y, w, h, ret;
|
|
|
|
/* got touch data? */
|
|
if ((pkt[0] & 0xe0) != 0xe0)
|
|
return 0;
|
|
|
|
if (data_len > 0xff)
|
|
data_len -= 0x100;
|
|
if (x_len > 0xff)
|
|
x_len -= 0x80;
|
|
|
|
/* send ACK */
|
|
ret = usb_submit_urb(priv->ack, GFP_ATOMIC);
|
|
|
|
if (!usbtouch->type->max_xc) {
|
|
usbtouch->type->max_xc = 2 * x_len;
|
|
input_set_abs_params(usbtouch->input, ABS_X,
|
|
0, usbtouch->type->max_xc, 0, 0);
|
|
usbtouch->type->max_yc = 2 * y_len;
|
|
input_set_abs_params(usbtouch->input, ABS_Y,
|
|
0, usbtouch->type->max_yc, 0, 0);
|
|
}
|
|
/*
|
|
* The device reports state of IR sensors on X and Y axes.
|
|
* Each byte represents "darkness" percentage (0-100) of one element.
|
|
* 17" touchscreen reports only 64 x 52 bytes so the resolution is low.
|
|
* This also means that there's a limited multi-touch capability but
|
|
* it's disabled (and untested) here as there's no X driver for that.
|
|
*/
|
|
begin_x = end_x = begin_y = end_y = -1;
|
|
for (x = 0; x < x_len; x++) {
|
|
if (begin_x == -1 && packet->data[x] > NEXIO_THRESHOLD) {
|
|
begin_x = x;
|
|
continue;
|
|
}
|
|
if (end_x == -1 && begin_x != -1 && packet->data[x] < NEXIO_THRESHOLD) {
|
|
end_x = x - 1;
|
|
for (y = x_len; y < data_len; y++) {
|
|
if (begin_y == -1 && packet->data[y] > NEXIO_THRESHOLD) {
|
|
begin_y = y - x_len;
|
|
continue;
|
|
}
|
|
if (end_y == -1 &&
|
|
begin_y != -1 && packet->data[y] < NEXIO_THRESHOLD) {
|
|
end_y = y - 1 - x_len;
|
|
w = end_x - begin_x;
|
|
h = end_y - begin_y;
|
|
#if 0
|
|
/* multi-touch */
|
|
input_report_abs(usbtouch->input,
|
|
ABS_MT_TOUCH_MAJOR, max(w,h));
|
|
input_report_abs(usbtouch->input,
|
|
ABS_MT_TOUCH_MINOR, min(x,h));
|
|
input_report_abs(usbtouch->input,
|
|
ABS_MT_POSITION_X, 2*begin_x+w);
|
|
input_report_abs(usbtouch->input,
|
|
ABS_MT_POSITION_Y, 2*begin_y+h);
|
|
input_report_abs(usbtouch->input,
|
|
ABS_MT_ORIENTATION, w > h);
|
|
input_mt_sync(usbtouch->input);
|
|
#endif
|
|
/* single touch */
|
|
usbtouch->x = 2 * begin_x + w;
|
|
usbtouch->y = 2 * begin_y + h;
|
|
usbtouch->touch = packet->flags & 0x01;
|
|
begin_y = end_y = -1;
|
|
return 1;
|
|
}
|
|
}
|
|
begin_x = end_x = -1;
|
|
}
|
|
|
|
}
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
|
|
/*****************************************************************************
|
|
* ELO part
|
|
*/
|
|
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_ELO
|
|
|
|
static int elo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
|
|
{
|
|
dev->x = (pkt[3] << 8) | pkt[2];
|
|
dev->y = (pkt[5] << 8) | pkt[4];
|
|
dev->touch = pkt[6] > 0;
|
|
dev->press = pkt[6];
|
|
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
|
|
/*****************************************************************************
|
|
* the different device descriptors
|
|
*/
|
|
#ifdef MULTI_PACKET
|
|
static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
|
|
unsigned char *pkt, int len);
|
|
#endif
|
|
|
|
static struct usbtouch_device_info usbtouch_dev_info[] = {
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_ELO
|
|
[DEVTYPE_ELO] = {
|
|
.min_xc = 0x0,
|
|
.max_xc = 0x0fff,
|
|
.min_yc = 0x0,
|
|
.max_yc = 0x0fff,
|
|
.max_press = 0xff,
|
|
.rept_size = 8,
|
|
.read_data = elo_read_data,
|
|
},
|
|
#endif
|
|
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
|
|
[DEVTYPE_EGALAX] = {
|
|
.min_xc = 0x0,
|
|
.max_xc = 0x07ff,
|
|
.min_yc = 0x0,
|
|
.max_yc = 0x07ff,
|
|
.rept_size = 16,
|
|
.process_pkt = usbtouch_process_multi,
|
|
.get_pkt_len = egalax_get_pkt_len,
|
|
.read_data = egalax_read_data,
|
|
.init = egalax_init,
|
|
},
|
|
#endif
|
|
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
|
|
[DEVTYPE_PANJIT] = {
|
|
.min_xc = 0x0,
|
|
.max_xc = 0x0fff,
|
|
.min_yc = 0x0,
|
|
.max_yc = 0x0fff,
|
|
.rept_size = 8,
|
|
.read_data = panjit_read_data,
|
|
},
|
|
#endif
|
|
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_3M
|
|
[DEVTYPE_3M] = {
|
|
.min_xc = 0x0,
|
|
.max_xc = 0x4000,
|
|
.min_yc = 0x0,
|
|
.max_yc = 0x4000,
|
|
.rept_size = 11,
|
|
.read_data = mtouch_read_data,
|
|
.alloc = mtouch_alloc,
|
|
.init = mtouch_init,
|
|
.exit = mtouch_exit,
|
|
},
|
|
#endif
|
|
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_ITM
|
|
[DEVTYPE_ITM] = {
|
|
.min_xc = 0x0,
|
|
.max_xc = 0x0fff,
|
|
.min_yc = 0x0,
|
|
.max_yc = 0x0fff,
|
|
.max_press = 0xff,
|
|
.rept_size = 8,
|
|
.read_data = itm_read_data,
|
|
},
|
|
#endif
|
|
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
|
|
[DEVTYPE_ETURBO] = {
|
|
.min_xc = 0x0,
|
|
.max_xc = 0x07ff,
|
|
.min_yc = 0x0,
|
|
.max_yc = 0x07ff,
|
|
.rept_size = 8,
|
|
.process_pkt = usbtouch_process_multi,
|
|
.get_pkt_len = eturbo_get_pkt_len,
|
|
.read_data = eturbo_read_data,
|
|
},
|
|
#endif
|
|
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
|
|
[DEVTYPE_GUNZE] = {
|
|
.min_xc = 0x0,
|
|
.max_xc = 0x0fff,
|
|
.min_yc = 0x0,
|
|
.max_yc = 0x0fff,
|
|
.rept_size = 4,
|
|
.read_data = gunze_read_data,
|
|
},
|
|
#endif
|
|
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
|
|
[DEVTYPE_DMC_TSC10] = {
|
|
.min_xc = 0x0,
|
|
.max_xc = 0x03ff,
|
|
.min_yc = 0x0,
|
|
.max_yc = 0x03ff,
|
|
.rept_size = 5,
|
|
.init = dmc_tsc10_init,
|
|
.read_data = dmc_tsc10_read_data,
|
|
},
|
|
#endif
|
|
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
|
|
[DEVTYPE_IRTOUCH] = {
|
|
.min_xc = 0x0,
|
|
.max_xc = 0x0fff,
|
|
.min_yc = 0x0,
|
|
.max_yc = 0x0fff,
|
|
.rept_size = 8,
|
|
.read_data = irtouch_read_data,
|
|
},
|
|
|
|
[DEVTYPE_IRTOUCH_HIRES] = {
|
|
.min_xc = 0x0,
|
|
.max_xc = 0x7fff,
|
|
.min_yc = 0x0,
|
|
.max_yc = 0x7fff,
|
|
.rept_size = 8,
|
|
.read_data = irtouch_read_data,
|
|
},
|
|
#endif
|
|
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
|
|
[DEVTYPE_IDEALTEK] = {
|
|
.min_xc = 0x0,
|
|
.max_xc = 0x0fff,
|
|
.min_yc = 0x0,
|
|
.max_yc = 0x0fff,
|
|
.rept_size = 8,
|
|
.process_pkt = usbtouch_process_multi,
|
|
.get_pkt_len = idealtek_get_pkt_len,
|
|
.read_data = idealtek_read_data,
|
|
},
|
|
#endif
|
|
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
|
|
[DEVTYPE_GENERAL_TOUCH] = {
|
|
.min_xc = 0x0,
|
|
.max_xc = 0x7fff,
|
|
.min_yc = 0x0,
|
|
.max_yc = 0x7fff,
|
|
.rept_size = 7,
|
|
.read_data = general_touch_read_data,
|
|
},
|
|
#endif
|
|
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
|
|
[DEVTYPE_GOTOP] = {
|
|
.min_xc = 0x0,
|
|
.max_xc = 0x03ff,
|
|
.min_yc = 0x0,
|
|
.max_yc = 0x03ff,
|
|
.rept_size = 4,
|
|
.read_data = gotop_read_data,
|
|
},
|
|
#endif
|
|
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
|
|
[DEVTYPE_JASTEC] = {
|
|
.min_xc = 0x0,
|
|
.max_xc = 0x0fff,
|
|
.min_yc = 0x0,
|
|
.max_yc = 0x0fff,
|
|
.rept_size = 4,
|
|
.read_data = jastec_read_data,
|
|
},
|
|
#endif
|
|
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_E2I
|
|
[DEVTYPE_E2I] = {
|
|
.min_xc = 0x0,
|
|
.max_xc = 0x7fff,
|
|
.min_yc = 0x0,
|
|
.max_yc = 0x7fff,
|
|
.rept_size = 6,
|
|
.init = e2i_init,
|
|
.read_data = e2i_read_data,
|
|
},
|
|
#endif
|
|
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
|
|
[DEVTYPE_ZYTRONIC] = {
|
|
.min_xc = 0x0,
|
|
.max_xc = 0x03ff,
|
|
.min_yc = 0x0,
|
|
.max_yc = 0x03ff,
|
|
.rept_size = 5,
|
|
.read_data = zytronic_read_data,
|
|
.irq_always = true,
|
|
},
|
|
#endif
|
|
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
|
|
[DEVTYPE_TC45USB] = {
|
|
.min_xc = 0x0,
|
|
.max_xc = 0x0fff,
|
|
.min_yc = 0x0,
|
|
.max_yc = 0x0fff,
|
|
.rept_size = 5,
|
|
.read_data = tc45usb_read_data,
|
|
},
|
|
#endif
|
|
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
|
|
[DEVTYPE_NEXIO] = {
|
|
.rept_size = 1024,
|
|
.irq_always = true,
|
|
.read_data = nexio_read_data,
|
|
.alloc = nexio_alloc,
|
|
.init = nexio_init,
|
|
.exit = nexio_exit,
|
|
},
|
|
#endif
|
|
#ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
|
|
[DEVTYPE_ETOUCH] = {
|
|
.min_xc = 0x0,
|
|
.max_xc = 0x07ff,
|
|
.min_yc = 0x0,
|
|
.max_yc = 0x07ff,
|
|
.rept_size = 16,
|
|
.process_pkt = usbtouch_process_multi,
|
|
.get_pkt_len = etouch_get_pkt_len,
|
|
.read_data = etouch_read_data,
|
|
},
|
|
#endif
|
|
};
|
|
|
|
|
|
/*****************************************************************************
|
|
* Generic Part
|
|
*/
|
|
static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch,
|
|
unsigned char *pkt, int len)
|
|
{
|
|
struct usbtouch_device_info *type = usbtouch->type;
|
|
|
|
if (!type->read_data(usbtouch, pkt))
|
|
return;
|
|
|
|
input_report_key(usbtouch->input, BTN_TOUCH, usbtouch->touch);
|
|
|
|
if (swap_xy) {
|
|
input_report_abs(usbtouch->input, ABS_X, usbtouch->y);
|
|
input_report_abs(usbtouch->input, ABS_Y, usbtouch->x);
|
|
} else {
|
|
input_report_abs(usbtouch->input, ABS_X, usbtouch->x);
|
|
input_report_abs(usbtouch->input, ABS_Y, usbtouch->y);
|
|
}
|
|
if (type->max_press)
|
|
input_report_abs(usbtouch->input, ABS_PRESSURE, usbtouch->press);
|
|
input_sync(usbtouch->input);
|
|
}
|
|
|
|
|
|
#ifdef MULTI_PACKET
|
|
static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
|
|
unsigned char *pkt, int len)
|
|
{
|
|
unsigned char *buffer;
|
|
int pkt_len, pos, buf_len, tmp;
|
|
|
|
/* process buffer */
|
|
if (unlikely(usbtouch->buf_len)) {
|
|
/* try to get size */
|
|
pkt_len = usbtouch->type->get_pkt_len(
|
|
usbtouch->buffer, usbtouch->buf_len);
|
|
|
|
/* drop? */
|
|
if (unlikely(!pkt_len))
|
|
goto out_flush_buf;
|
|
|
|
/* need to append -pkt_len bytes before able to get size */
|
|
if (unlikely(pkt_len < 0)) {
|
|
int append = -pkt_len;
|
|
if (unlikely(append > len))
|
|
append = len;
|
|
if (usbtouch->buf_len + append >= usbtouch->type->rept_size)
|
|
goto out_flush_buf;
|
|
memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, append);
|
|
usbtouch->buf_len += append;
|
|
|
|
pkt_len = usbtouch->type->get_pkt_len(
|
|
usbtouch->buffer, usbtouch->buf_len);
|
|
if (pkt_len < 0)
|
|
return;
|
|
}
|
|
|
|
/* append */
|
|
tmp = pkt_len - usbtouch->buf_len;
|
|
if (usbtouch->buf_len + tmp >= usbtouch->type->rept_size)
|
|
goto out_flush_buf;
|
|
memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, tmp);
|
|
usbtouch_process_pkt(usbtouch, usbtouch->buffer, pkt_len);
|
|
|
|
buffer = pkt + tmp;
|
|
buf_len = len - tmp;
|
|
} else {
|
|
buffer = pkt;
|
|
buf_len = len;
|
|
}
|
|
|
|
/* loop over the received packet, process */
|
|
pos = 0;
|
|
while (pos < buf_len) {
|
|
/* get packet len */
|
|
pkt_len = usbtouch->type->get_pkt_len(buffer + pos,
|
|
buf_len - pos);
|
|
|
|
/* unknown packet: skip one byte */
|
|
if (unlikely(!pkt_len)) {
|
|
pos++;
|
|
continue;
|
|
}
|
|
|
|
/* full packet: process */
|
|
if (likely((pkt_len > 0) && (pkt_len <= buf_len - pos))) {
|
|
usbtouch_process_pkt(usbtouch, buffer + pos, pkt_len);
|
|
} else {
|
|
/* incomplete packet: save in buffer */
|
|
memcpy(usbtouch->buffer, buffer + pos, buf_len - pos);
|
|
usbtouch->buf_len = buf_len - pos;
|
|
return;
|
|
}
|
|
pos += pkt_len;
|
|
}
|
|
|
|
out_flush_buf:
|
|
usbtouch->buf_len = 0;
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
|
|
static void usbtouch_irq(struct urb *urb)
|
|
{
|
|
struct usbtouch_usb *usbtouch = urb->context;
|
|
struct device *dev = &usbtouch->interface->dev;
|
|
int retval;
|
|
|
|
switch (urb->status) {
|
|
case 0:
|
|
/* success */
|
|
break;
|
|
case -ETIME:
|
|
/* this urb is timing out */
|
|
dev_dbg(dev,
|
|
"%s - urb timed out - was the device unplugged?\n",
|
|
__func__);
|
|
return;
|
|
case -ECONNRESET:
|
|
case -ENOENT:
|
|
case -ESHUTDOWN:
|
|
case -EPIPE:
|
|
/* this urb is terminated, clean up */
|
|
dev_dbg(dev, "%s - urb shutting down with status: %d\n",
|
|
__func__, urb->status);
|
|
return;
|
|
default:
|
|
dev_dbg(dev, "%s - nonzero urb status received: %d\n",
|
|
__func__, urb->status);
|
|
goto exit;
|
|
}
|
|
|
|
usbtouch->type->process_pkt(usbtouch, usbtouch->data, urb->actual_length);
|
|
|
|
exit:
|
|
usb_mark_last_busy(interface_to_usbdev(usbtouch->interface));
|
|
retval = usb_submit_urb(urb, GFP_ATOMIC);
|
|
if (retval)
|
|
dev_err(dev, "%s - usb_submit_urb failed with result: %d\n",
|
|
__func__, retval);
|
|
}
|
|
|
|
static int usbtouch_open(struct input_dev *input)
|
|
{
|
|
struct usbtouch_usb *usbtouch = input_get_drvdata(input);
|
|
int r;
|
|
|
|
usbtouch->irq->dev = interface_to_usbdev(usbtouch->interface);
|
|
|
|
r = usb_autopm_get_interface(usbtouch->interface) ? -EIO : 0;
|
|
if (r < 0)
|
|
goto out;
|
|
|
|
mutex_lock(&usbtouch->pm_mutex);
|
|
if (!usbtouch->type->irq_always) {
|
|
if (usb_submit_urb(usbtouch->irq, GFP_KERNEL)) {
|
|
r = -EIO;
|
|
goto out_put;
|
|
}
|
|
}
|
|
|
|
usbtouch->interface->needs_remote_wakeup = 1;
|
|
usbtouch->is_open = true;
|
|
out_put:
|
|
mutex_unlock(&usbtouch->pm_mutex);
|
|
usb_autopm_put_interface(usbtouch->interface);
|
|
out:
|
|
return r;
|
|
}
|
|
|
|
static void usbtouch_close(struct input_dev *input)
|
|
{
|
|
struct usbtouch_usb *usbtouch = input_get_drvdata(input);
|
|
int r;
|
|
|
|
mutex_lock(&usbtouch->pm_mutex);
|
|
if (!usbtouch->type->irq_always)
|
|
usb_kill_urb(usbtouch->irq);
|
|
usbtouch->is_open = false;
|
|
mutex_unlock(&usbtouch->pm_mutex);
|
|
|
|
r = usb_autopm_get_interface(usbtouch->interface);
|
|
usbtouch->interface->needs_remote_wakeup = 0;
|
|
if (!r)
|
|
usb_autopm_put_interface(usbtouch->interface);
|
|
}
|
|
|
|
static int usbtouch_suspend
|
|
(struct usb_interface *intf, pm_message_t message)
|
|
{
|
|
struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
|
|
|
|
usb_kill_urb(usbtouch->irq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int usbtouch_resume(struct usb_interface *intf)
|
|
{
|
|
struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
|
|
int result = 0;
|
|
|
|
mutex_lock(&usbtouch->pm_mutex);
|
|
if (usbtouch->is_open || usbtouch->type->irq_always)
|
|
result = usb_submit_urb(usbtouch->irq, GFP_NOIO);
|
|
mutex_unlock(&usbtouch->pm_mutex);
|
|
|
|
return result;
|
|
}
|
|
|
|
static int usbtouch_reset_resume(struct usb_interface *intf)
|
|
{
|
|
struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
|
|
int err = 0;
|
|
|
|
/* reinit the device */
|
|
if (usbtouch->type->init) {
|
|
err = usbtouch->type->init(usbtouch);
|
|
if (err) {
|
|
dev_dbg(&intf->dev,
|
|
"%s - type->init() failed, err: %d\n",
|
|
__func__, err);
|
|
return err;
|
|
}
|
|
}
|
|
|
|
/* restart IO if needed */
|
|
mutex_lock(&usbtouch->pm_mutex);
|
|
if (usbtouch->is_open)
|
|
err = usb_submit_urb(usbtouch->irq, GFP_NOIO);
|
|
mutex_unlock(&usbtouch->pm_mutex);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void usbtouch_free_buffers(struct usb_device *udev,
|
|
struct usbtouch_usb *usbtouch)
|
|
{
|
|
usb_free_coherent(udev, usbtouch->data_size,
|
|
usbtouch->data, usbtouch->data_dma);
|
|
kfree(usbtouch->buffer);
|
|
}
|
|
|
|
static struct usb_endpoint_descriptor *
|
|
usbtouch_get_input_endpoint(struct usb_host_interface *interface)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < interface->desc.bNumEndpoints; i++)
|
|
if (usb_endpoint_dir_in(&interface->endpoint[i].desc))
|
|
return &interface->endpoint[i].desc;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
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_endpoint_descriptor *endpoint;
|
|
struct usb_device *udev = interface_to_usbdev(intf);
|
|
struct usbtouch_device_info *type;
|
|
int err = -ENOMEM;
|
|
|
|
/* some devices are ignored */
|
|
if (id->driver_info == DEVTYPE_IGNORE)
|
|
return -ENODEV;
|
|
|
|
endpoint = usbtouch_get_input_endpoint(intf->cur_altsetting);
|
|
if (!endpoint)
|
|
return -ENXIO;
|
|
|
|
usbtouch = kzalloc(sizeof(struct usbtouch_usb), GFP_KERNEL);
|
|
input_dev = input_allocate_device();
|
|
if (!usbtouch || !input_dev)
|
|
goto out_free;
|
|
|
|
mutex_init(&usbtouch->pm_mutex);
|
|
|
|
type = &usbtouch_dev_info[id->driver_info];
|
|
usbtouch->type = type;
|
|
if (!type->process_pkt)
|
|
type->process_pkt = usbtouch_process_pkt;
|
|
|
|
usbtouch->data_size = type->rept_size;
|
|
if (type->get_pkt_len) {
|
|
/*
|
|
* When dealing with variable-length packets we should
|
|
* not request more than wMaxPacketSize bytes at once
|
|
* as we do not know if there is more data coming or
|
|
* we filled exactly wMaxPacketSize bytes and there is
|
|
* nothing else.
|
|
*/
|
|
usbtouch->data_size = min(usbtouch->data_size,
|
|
usb_endpoint_maxp(endpoint));
|
|
}
|
|
|
|
usbtouch->data = usb_alloc_coherent(udev, usbtouch->data_size,
|
|
GFP_KERNEL, &usbtouch->data_dma);
|
|
if (!usbtouch->data)
|
|
goto out_free;
|
|
|
|
if (type->get_pkt_len) {
|
|
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) {
|
|
dev_dbg(&intf->dev,
|
|
"%s - usb_alloc_urb failed: usbtouch->irq\n", __func__);
|
|
goto out_free_buffers;
|
|
}
|
|
|
|
usbtouch->interface = intf;
|
|
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));
|
|
strlcat(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->dev.parent = &intf->dev;
|
|
|
|
input_set_drvdata(input_dev, usbtouch);
|
|
|
|
input_dev->open = usbtouch_open;
|
|
input_dev->close = usbtouch_close;
|
|
|
|
input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
|
|
input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(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);
|
|
|
|
if (usb_endpoint_type(endpoint) == USB_ENDPOINT_XFER_INT)
|
|
usb_fill_int_urb(usbtouch->irq, udev,
|
|
usb_rcvintpipe(udev, endpoint->bEndpointAddress),
|
|
usbtouch->data, usbtouch->data_size,
|
|
usbtouch_irq, usbtouch, endpoint->bInterval);
|
|
else
|
|
usb_fill_bulk_urb(usbtouch->irq, udev,
|
|
usb_rcvbulkpipe(udev, endpoint->bEndpointAddress),
|
|
usbtouch->data, usbtouch->data_size,
|
|
usbtouch_irq, usbtouch);
|
|
|
|
usbtouch->irq->dev = udev;
|
|
usbtouch->irq->transfer_dma = usbtouch->data_dma;
|
|
usbtouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
|
|
|
|
/* device specific allocations */
|
|
if (type->alloc) {
|
|
err = type->alloc(usbtouch);
|
|
if (err) {
|
|
dev_dbg(&intf->dev,
|
|
"%s - type->alloc() failed, err: %d\n",
|
|
__func__, err);
|
|
goto out_free_urb;
|
|
}
|
|
}
|
|
|
|
/* device specific initialisation*/
|
|
if (type->init) {
|
|
err = type->init(usbtouch);
|
|
if (err) {
|
|
dev_dbg(&intf->dev,
|
|
"%s - type->init() failed, err: %d\n",
|
|
__func__, err);
|
|
goto out_do_exit;
|
|
}
|
|
}
|
|
|
|
err = input_register_device(usbtouch->input);
|
|
if (err) {
|
|
dev_dbg(&intf->dev,
|
|
"%s - input_register_device failed, err: %d\n",
|
|
__func__, err);
|
|
goto out_do_exit;
|
|
}
|
|
|
|
usb_set_intfdata(intf, usbtouch);
|
|
|
|
if (usbtouch->type->irq_always) {
|
|
/* this can't fail */
|
|
usb_autopm_get_interface(intf);
|
|
err = usb_submit_urb(usbtouch->irq, GFP_KERNEL);
|
|
if (err) {
|
|
usb_autopm_put_interface(intf);
|
|
dev_err(&intf->dev,
|
|
"%s - usb_submit_urb failed with result: %d\n",
|
|
__func__, err);
|
|
goto out_unregister_input;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
out_unregister_input:
|
|
input_unregister_device(input_dev);
|
|
input_dev = NULL;
|
|
out_do_exit:
|
|
if (type->exit)
|
|
type->exit(usbtouch);
|
|
out_free_urb:
|
|
usb_free_urb(usbtouch->irq);
|
|
out_free_buffers:
|
|
usbtouch_free_buffers(udev, usbtouch);
|
|
out_free:
|
|
input_free_device(input_dev);
|
|
kfree(usbtouch);
|
|
return err;
|
|
}
|
|
|
|
static void usbtouch_disconnect(struct usb_interface *intf)
|
|
{
|
|
struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
|
|
|
|
if (!usbtouch)
|
|
return;
|
|
|
|
dev_dbg(&intf->dev,
|
|
"%s - usbtouch is initialized, cleaning up\n", __func__);
|
|
|
|
usb_set_intfdata(intf, NULL);
|
|
/* this will stop IO via close */
|
|
input_unregister_device(usbtouch->input);
|
|
usb_free_urb(usbtouch->irq);
|
|
if (usbtouch->type->exit)
|
|
usbtouch->type->exit(usbtouch);
|
|
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,
|
|
.suspend = usbtouch_suspend,
|
|
.resume = usbtouch_resume,
|
|
.reset_resume = usbtouch_reset_resume,
|
|
.id_table = usbtouch_devices,
|
|
.supports_autosuspend = 1,
|
|
};
|
|
|
|
module_usb_driver(usbtouch_driver);
|
|
|
|
MODULE_AUTHOR("Daniel Ritz <daniel.ritz@gmx.ch>");
|
|
MODULE_DESCRIPTION("USB Touchscreen Driver");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
MODULE_ALIAS("touchkitusb");
|
|
MODULE_ALIAS("itmtouch");
|
|
MODULE_ALIAS("mtouchusb");
|