| // SPDX-License-Identifier: GPL-2.0-or-later |
| /****************************************************************************** |
| * usbtouchscreen.c |
| * Driver for USB Touchscreens, supporting those devices: |
| * - eGalax Touchkit |
| * includes eTurboTouch CT-410/510/700 |
| * - 3M/Microtouch EX II series |
| * - ITM |
| * - PanJit TouchSet |
| * - eTurboTouch |
| * - Gunze AHL61 |
| * - DMC TSC-10/25 |
| * - IRTOUCHSYSTEMS/UNITOP |
| * - IdealTEK URTC1000 |
| * - General Touch |
| * - GoTop Super_Q2/GogoPen/PenPower tablets |
| * - JASTEC USB touch controller/DigiTech DTR-02U |
| * - Zytronic capacitive touchscreen |
| * - NEXIO/iNexio |
| * - Elo TouchSystems 2700 IntelliTouch |
| * - EasyTouch USB Dual/Multi touch controller from Data Modul |
| * |
| * Copyright (C) 2004-2007 by Daniel Ritz <daniel.ritz@gmx.ch> |
| * Copyright (C) by Todd E. Johnson (mtouchusb.c) |
| * |
| * Driver is based on touchkitusb.c |
| * - ITM parts are from itmtouch.c |
| * - 3M parts are from mtouchusb.c |
| * - PanJit parts are from an unmerged driver by Lanslott Gish |
| * - DMC TSC 10/25 are from Holger Schurig, with ideas from an unmerged |
| * driver from Marius Vollmer |
| * |
| *****************************************************************************/ |
| |
| //#define DEBUG |
| |
| #include <linux/kernel.h> |
| #include <linux/slab.h> |
| #include <linux/input.h> |
| #include <linux/module.h> |
| #include <linux/usb.h> |
| #include <linux/usb/input.h> |
| #include <linux/hid.h> |
| #include <linux/mutex.h> |
| |
| static bool swap_xy; |
| module_param(swap_xy, bool, 0644); |
| MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped."); |
| |
| static bool hwcalib_xy; |
| module_param(hwcalib_xy, bool, 0644); |
| MODULE_PARM_DESC(hwcalib_xy, "If set hw-calibrated X/Y are used if available"); |
| |
| /* device specifc data/functions */ |
| struct usbtouch_usb; |
| struct usbtouch_device_info { |
| int min_xc, max_xc; |
| int min_yc, max_yc; |
| int min_press, max_press; |
| int rept_size; |
| |
| /* |
| * Always service the USB devices irq not just when the input device is |
| * open. This is useful when devices have a watchdog which prevents us |
| * from periodically polling the device. Leave this unset unless your |
| * touchscreen device requires it, as it does consume more of the USB |
| * bandwidth. |
| */ |
| bool irq_always; |
| |
| void (*process_pkt) (struct usbtouch_usb *usbtouch, unsigned char *pkt, int len); |
| |
| /* |
| * used to get the packet len. possible return values: |
| * > 0: packet len |
| * = 0: skip one byte |
| * < 0: -return value more bytes needed |
| */ |
| int (*get_pkt_len) (unsigned char *pkt, int len); |
| |
| int (*read_data) (struct usbtouch_usb *usbtouch, unsigned char *pkt); |
| int (*alloc) (struct usbtouch_usb *usbtouch); |
| int (*init) (struct usbtouch_usb *usbtouch); |
| void (*exit) (struct usbtouch_usb *usbtouch); |
| }; |
| |
| /* a usbtouch device */ |
| struct usbtouch_usb { |
| unsigned char *data; |
| dma_addr_t data_dma; |
| int data_size; |
| unsigned char *buffer; |
| int buf_len; |
| struct urb *irq; |
| struct usb_interface *interface; |
| struct input_dev *input; |
| struct usbtouch_device_info *type; |
| struct mutex pm_mutex; /* serialize access to open/suspend */ |
| bool is_open; |
| char name[128]; |
| char phys[64]; |
| void *priv; |
| |
| int x, y; |
| int touch, press; |
| }; |
| |
| |
| /* device types */ |
| enum { |
| DEVTYPE_IGNORE = -1, |
| DEVTYPE_EGALAX, |
| DEVTYPE_PANJIT, |
| DEVTYPE_3M, |
| DEVTYPE_ITM, |
| DEVTYPE_ETURBO, |
| DEVTYPE_GUNZE, |
| DEVTYPE_DMC_TSC10, |
| DEVTYPE_IRTOUCH, |
| DEVTYPE_IRTOUCH_HIRES, |
| DEVTYPE_IDEALTEK, |
| DEVTYPE_GENERAL_TOUCH, |
| DEVTYPE_GOTOP, |
| DEVTYPE_JASTEC, |
| DEVTYPE_E2I, |
| DEVTYPE_ZYTRONIC, |
| DEVTYPE_TC45USB, |
| DEVTYPE_NEXIO, |
| DEVTYPE_ELO, |
| DEVTYPE_ETOUCH, |
| }; |
| |
| #define USB_DEVICE_HID_CLASS(vend, prod) \ |
| .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS \ |
| | USB_DEVICE_ID_MATCH_DEVICE, \ |
| .idVendor = (vend), \ |
| .idProduct = (prod), \ |
| .bInterfaceClass = USB_INTERFACE_CLASS_HID |
| |
| static const struct usb_device_id usbtouch_devices[] = { |
| #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX |
| /* ignore the HID capable devices, handled by usbhid */ |
| {USB_DEVICE_HID_CLASS(0x0eef, 0x0001), .driver_info = DEVTYPE_IGNORE}, |
| {USB_DEVICE_HID_CLASS(0x0eef, 0x0002), .driver_info = DEVTYPE_IGNORE}, |
| |
| /* normal device IDs */ |
| {USB_DEVICE(0x3823, 0x0001), .driver_info = DEVTYPE_EGALAX}, |
| {USB_DEVICE(0x3823, 0x0002), .driver_info = DEVTYPE_EGALAX}, |
| {USB_DEVICE(0x0123, 0x0001), .driver_info = DEVTYPE_EGALAX}, |
| {USB_DEVICE(0x0eef, 0x0001), .driver_info = DEVTYPE_EGALAX}, |
| {USB_DEVICE(0x0eef, 0x0002), .driver_info = DEVTYPE_EGALAX}, |
| {USB_DEVICE(0x1234, 0x0001), .driver_info = DEVTYPE_EGALAX}, |
| {USB_DEVICE(0x1234, 0x0002), .driver_info = DEVTYPE_EGALAX}, |
| #endif |
| |
| #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT |
| {USB_DEVICE(0x134c, 0x0001), .driver_info = DEVTYPE_PANJIT}, |
| {USB_DEVICE(0x134c, 0x0002), .driver_info = DEVTYPE_PANJIT}, |
| {USB_DEVICE(0x134c, 0x0003), .driver_info = DEVTYPE_PANJIT}, |
| {USB_DEVICE(0x134c, 0x0004), .driver_info = DEVTYPE_PANJIT}, |
| #endif |
| |
| #ifdef CONFIG_TOUCHSCREEN_USB_3M |
| {USB_DEVICE(0x0596, 0x0001), .driver_info = DEVTYPE_3M}, |
| #endif |
| |
| #ifdef CONFIG_TOUCHSCREEN_USB_ITM |
| {USB_DEVICE(0x0403, 0xf9e9), .driver_info = DEVTYPE_ITM}, |
| {USB_DEVICE(0x16e3, 0xf9e9), .driver_info = DEVTYPE_ITM}, |
| #endif |
| |
| #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO |
| {USB_DEVICE(0x1234, 0x5678), .driver_info = DEVTYPE_ETURBO}, |
| #endif |
| |
| #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE |
| {USB_DEVICE(0x0637, 0x0001), .driver_info = DEVTYPE_GUNZE}, |
| #endif |
| |
| #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10 |
| {USB_DEVICE(0x0afa, 0x03e8), .driver_info = DEVTYPE_DMC_TSC10}, |
| #endif |
| |
| #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH |
| {USB_DEVICE(0x255e, 0x0001), .driver_info = DEVTYPE_IRTOUCH}, |
| {USB_DEVICE(0x595a, 0x0001), .driver_info = DEVTYPE_IRTOUCH}, |
| {USB_DEVICE(0x6615, 0x0001), .driver_info = DEVTYPE_IRTOUCH}, |
| {USB_DEVICE(0x6615, 0x0012), .driver_info = DEVTYPE_IRTOUCH_HIRES}, |
| #endif |
| |
| #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK |
| {USB_DEVICE(0x1391, 0x1000), .driver_info = DEVTYPE_IDEALTEK}, |
| #endif |
| |
| #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH |
| {USB_DEVICE(0x0dfc, 0x0001), .driver_info = DEVTYPE_GENERAL_TOUCH}, |
| #endif |
| |
| #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP |
| {USB_DEVICE(0x08f2, 0x007f), .driver_info = DEVTYPE_GOTOP}, |
| {USB_DEVICE(0x08f2, 0x00ce), .driver_info = DEVTYPE_GOTOP}, |
| {USB_DEVICE(0x08f2, 0x00f4), .driver_info = DEVTYPE_GOTOP}, |
| #endif |
| |
| #ifdef CONFIG_TOUCHSCREEN_USB_JASTEC |
| {USB_DEVICE(0x0f92, 0x0001), .driver_info = DEVTYPE_JASTEC}, |
| #endif |
| |
| #ifdef CONFIG_TOUCHSCREEN_USB_E2I |
| {USB_DEVICE(0x1ac7, 0x0001), .driver_info = DEVTYPE_E2I}, |
| #endif |
| |
| #ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC |
| {USB_DEVICE(0x14c8, 0x0003), .driver_info = DEVTYPE_ZYTRONIC}, |
| #endif |
| |
| #ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB |
| /* TC5UH */ |
| {USB_DEVICE(0x0664, 0x0309), .driver_info = DEVTYPE_TC45USB}, |
| /* TC4UM */ |
| {USB_DEVICE(0x0664, 0x0306), .driver_info = DEVTYPE_TC45USB}, |
| #endif |
| |
| #ifdef CONFIG_TOUCHSCREEN_USB_NEXIO |
| /* data interface only */ |
| {USB_DEVICE_AND_INTERFACE_INFO(0x10f0, 0x2002, 0x0a, 0x00, 0x00), |
| .driver_info = DEVTYPE_NEXIO}, |
| {USB_DEVICE_AND_INTERFACE_INFO(0x1870, 0x0001, 0x0a, 0x00, 0x00), |
| .driver_info = DEVTYPE_NEXIO}, |
| #endif |
| |
| #ifdef CONFIG_TOUCHSCREEN_USB_ELO |
| {USB_DEVICE(0x04e7, 0x0020), .driver_info = DEVTYPE_ELO}, |
| #endif |
| |
| #ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH |
| {USB_DEVICE(0x7374, 0x0001), .driver_info = DEVTYPE_ETOUCH}, |
| #endif |
| |
| {} |
| }; |
| |
| |
| /***************************************************************************** |
| * e2i Part |
| */ |
| |
| #ifdef CONFIG_TOUCHSCREEN_USB_E2I |
| static int e2i_init(struct usbtouch_usb *usbtouch) |
| { |
| int ret; |
| struct usb_device *udev = interface_to_usbdev(usbtouch->interface); |
| |
| ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), |
| 0x01, 0x02, 0x0000, 0x0081, |
| NULL, 0, USB_CTRL_SET_TIMEOUT); |
| |
| dev_dbg(&usbtouch->interface->dev, |
| "%s - usb_control_msg - E2I_RESET - bytes|err: %d\n", |
| __func__, ret); |
| return ret; |
| } |
| |
| static int e2i_read_data(struct usbtouch_usb *dev, unsigned char *pkt) |
| { |
| int tmp = (pkt[0] << 8) | pkt[1]; |
| dev->x = (pkt[2] << 8) | pkt[3]; |
| dev->y = (pkt[4] << 8) | pkt[5]; |
| |
| tmp = tmp - 0xA000; |
| dev->touch = (tmp > 0); |
| dev->press = (tmp > 0 ? tmp : 0); |
| |
| return 1; |
| } |
| #endif |
| |
| |
| /***************************************************************************** |
| * eGalax part |
| */ |
| |
| #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX |
| |
| #ifndef MULTI_PACKET |
| #define MULTI_PACKET |
| #endif |
| |
| #define EGALAX_PKT_TYPE_MASK 0xFE |
| #define EGALAX_PKT_TYPE_REPT 0x80 |
| #define EGALAX_PKT_TYPE_DIAG 0x0A |
| |
| static int egalax_init(struct usbtouch_usb *usbtouch) |
| { |
| int ret, i; |
| unsigned char *buf; |
| struct usb_device *udev = interface_to_usbdev(usbtouch->interface); |
| |
| /* |
| * An eGalax diagnostic packet kicks the device into using the right |
| * protocol. We send a "check active" packet. The response will be |
| * read later and ignored. |
| */ |
| |
| buf = kmalloc(3, GFP_KERNEL); |
| if (!buf) |
| return -ENOMEM; |
| |
| buf[0] = EGALAX_PKT_TYPE_DIAG; |
| buf[1] = 1; /* length */ |
| buf[2] = 'A'; /* command - check active */ |
| |
| for (i = 0; i < 3; i++) { |
| ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), |
| 0, |
| USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 0, 0, buf, 3, |
| USB_CTRL_SET_TIMEOUT); |
| if (ret >= 0) { |
| ret = 0; |
| break; |
| } |
| if (ret != -EPIPE) |
| break; |
| } |
| |
| kfree(buf); |
| |
| return ret; |
| } |
| |
| static int egalax_read_data(struct usbtouch_usb *dev, unsigned char *pkt) |
| { |
| if ((pkt[0] & EGALAX_PKT_TYPE_MASK) != EGALAX_PKT_TYPE_REPT) |
| return 0; |
| |
| dev->x = ((pkt[3] & 0x0F) << 7) | (pkt[4] & 0x7F); |
| dev->y = ((pkt[1] & 0x0F) << 7) | (pkt[2] & 0x7F); |
| dev->touch = pkt[0] & 0x01; |
| |
| return 1; |
| } |
| |
| static int egalax_get_pkt_len(unsigned char *buf, int len) |
| { |
| switch (buf[0] & EGALAX_PKT_TYPE_MASK) { |
| case EGALAX_PKT_TYPE_REPT: |
| return 5; |
| |
| case EGALAX_PKT_TYPE_DIAG: |
| if (len < 2) |
| return -1; |
| |
| return buf[1] + 2; |
| } |
| |
| return 0; |
| } |
| #endif |
| |
| /***************************************************************************** |
| * EasyTouch part |
| */ |
| |
| #ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH |
| |
| #ifndef MULTI_PACKET |
| #define MULTI_PACKET |
| #endif |
| |
| #define ETOUCH_PKT_TYPE_MASK 0xFE |
| #define ETOUCH_PKT_TYPE_REPT 0x80 |
| #define ETOUCH_PKT_TYPE_REPT2 0xB0 |
| #define ETOUCH_PKT_TYPE_DIAG 0x0A |
| |
| static int etouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt) |
| { |
| if ((pkt[0] & ETOUCH_PKT_TYPE_MASK) != ETOUCH_PKT_TYPE_REPT && |
| (pkt[0] & ETOUCH_PKT_TYPE_MASK) != ETOUCH_PKT_TYPE_REPT2) |
| return 0; |
| |
| dev->x = ((pkt[1] & 0x1F) << 7) | (pkt[2] & 0x7F); |
| dev->y = ((pkt[3] & 0x1F) << 7) | (pkt[4] & 0x7F); |
| dev->touch = pkt[0] & 0x01; |
| |
| return 1; |
| } |
| |
| static int etouch_get_pkt_len(unsigned char *buf, int len) |
| { |
| switch (buf[0] & ETOUCH_PKT_TYPE_MASK) { |
| case ETOUCH_PKT_TYPE_REPT: |
| case ETOUCH_PKT_TYPE_REPT2: |
| return 5; |
| |
| case ETOUCH_PKT_TYPE_DIAG: |
| if (len < 2) |
| return -1; |
| |
| return buf[1] + 2; |
| } |
| |
| return 0; |
| } |
| #endif |
| |
| /***************************************************************************** |
| * PanJit Part |
| */ |
| #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT |
| static int panjit_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 |
| |
| |
| /***************************************************************************** |
| * 3M/Microtouch Part |
| */ |
| #ifdef CONFIG_TOUCHSCREEN_USB_3M |
| |
| #define MTOUCHUSB_ASYNC_REPORT 1 |
| #define MTOUCHUSB_RESET 7 |
| #define MTOUCHUSB_REQ_CTRLLR_ID 10 |
| |
| #define MTOUCHUSB_REQ_CTRLLR_ID_LEN 16 |
| |
| static int mtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt) |
| { |
| if (hwcalib_xy) { |
| dev->x = (pkt[4] << 8) | pkt[3]; |
| dev->y = 0xffff - ((pkt[6] << 8) | pkt[5]); |
| } else { |
| dev->x = (pkt[8] << 8) | pkt[7]; |
| dev->y = (pkt[10] << 8) | pkt[9]; |
| } |
| dev->touch = (pkt[2] & 0x40) ? 1 : 0; |
| |
| return 1; |
| } |
| |
| struct mtouch_priv { |
| u8 fw_rev_major; |
| u8 fw_rev_minor; |
| }; |
| |
| static ssize_t mtouch_firmware_rev_show(struct device *dev, |
| struct device_attribute *attr, char *output) |
| { |
| struct usb_interface *intf = to_usb_interface(dev); |
| struct usbtouch_usb *usbtouch = usb_get_intfdata(intf); |
| struct mtouch_priv *priv = usbtouch->priv; |
| |
| return scnprintf(output, PAGE_SIZE, "%1x.%1x\n", |
| priv->fw_rev_major, priv->fw_rev_minor); |
| } |
| static DEVICE_ATTR(firmware_rev, 0444, mtouch_firmware_rev_show, NULL); |
| |
| static struct attribute *mtouch_attrs[] = { |
| &dev_attr_firmware_rev.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group mtouch_attr_group = { |
| .attrs = mtouch_attrs, |
| }; |
| |
| static int mtouch_get_fw_revision(struct usbtouch_usb *usbtouch) |
| { |
| struct usb_device *udev = interface_to_usbdev(usbtouch->interface); |
| struct mtouch_priv *priv = usbtouch->priv; |
| u8 *buf; |
| int ret; |
| |
| buf = kzalloc(MTOUCHUSB_REQ_CTRLLR_ID_LEN, GFP_NOIO); |
| if (!buf) |
| 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_sndctrlpipe(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_sndctrlpipe(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_sndctrlpipe(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"); |