1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /******************************************************************************
4 * Driver for USB Touchscreens, supporting those devices:
6 * includes eTurboTouch CT-410/510/700
7 * - 3M/Microtouch EX II series
13 * - IRTOUCHSYSTEMS/UNITOP
16 * - GoTop Super_Q2/GogoPen/PenPower tablets
17 * - JASTEC USB touch controller/DigiTech DTR-02U
18 * - Zytronic capacitive touchscreen
20 * - Elo TouchSystems 2700 IntelliTouch
21 * - EasyTouch USB Dual/Multi touch controller from Data Modul
23 * Copyright (C) 2004-2007 by Daniel Ritz <daniel.ritz@gmx.ch>
24 * Copyright (C) by Todd E. Johnson (mtouchusb.c)
26 * Driver is based on touchkitusb.c
27 * - ITM parts are from itmtouch.c
28 * - 3M parts are from mtouchusb.c
29 * - PanJit parts are from an unmerged driver by Lanslott Gish
30 * - DMC TSC 10/25 are from Holger Schurig, with ideas from an unmerged
31 * driver from Marius Vollmer
33 *****************************************************************************/
37 #include <linux/kernel.h>
38 #include <linux/slab.h>
39 #include <linux/input.h>
40 #include <linux/module.h>
41 #include <linux/usb.h>
42 #include <linux/usb/input.h>
43 #include <linux/hid.h>
44 #include <linux/mutex.h>
47 module_param(swap_xy, bool, 0644);
48 MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped.");
50 static bool hwcalib_xy;
51 module_param(hwcalib_xy, bool, 0644);
52 MODULE_PARM_DESC(hwcalib_xy, "If set hw-calibrated X/Y are used if available");
54 /* device specifc data/functions */
56 struct usbtouch_device_info {
59 int min_press, max_press;
63 * Always service the USB devices irq not just when the input device is
64 * open. This is useful when devices have a watchdog which prevents us
65 * from periodically polling the device. Leave this unset unless your
66 * touchscreen device requires it, as it does consume more of the USB
71 void (*process_pkt) (struct usbtouch_usb *usbtouch, unsigned char *pkt, int len);
74 * used to get the packet len. possible return values:
77 * < 0: -return value more bytes needed
79 int (*get_pkt_len) (unsigned char *pkt, int len);
81 int (*read_data) (struct usbtouch_usb *usbtouch, unsigned char *pkt);
82 int (*alloc) (struct usbtouch_usb *usbtouch);
83 int (*init) (struct usbtouch_usb *usbtouch);
84 void (*exit) (struct usbtouch_usb *usbtouch);
87 /* a usbtouch device */
92 unsigned char *buffer;
95 struct usb_interface *interface;
96 struct input_dev *input;
97 struct usbtouch_device_info *type;
98 struct mutex pm_mutex; /* serialize access to open/suspend */
120 DEVTYPE_IRTOUCH_HIRES,
122 DEVTYPE_GENERAL_TOUCH,
133 #define USB_DEVICE_HID_CLASS(vend, prod) \
134 .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS \
135 | USB_DEVICE_ID_MATCH_DEVICE, \
136 .idVendor = (vend), \
137 .idProduct = (prod), \
138 .bInterfaceClass = USB_INTERFACE_CLASS_HID
140 static const struct usb_device_id usbtouch_devices[] = {
141 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
142 /* ignore the HID capable devices, handled by usbhid */
143 {USB_DEVICE_HID_CLASS(0x0eef, 0x0001), .driver_info = DEVTYPE_IGNORE},
144 {USB_DEVICE_HID_CLASS(0x0eef, 0x0002), .driver_info = DEVTYPE_IGNORE},
146 /* normal device IDs */
147 {USB_DEVICE(0x3823, 0x0001), .driver_info = DEVTYPE_EGALAX},
148 {USB_DEVICE(0x3823, 0x0002), .driver_info = DEVTYPE_EGALAX},
149 {USB_DEVICE(0x0123, 0x0001), .driver_info = DEVTYPE_EGALAX},
150 {USB_DEVICE(0x0eef, 0x0001), .driver_info = DEVTYPE_EGALAX},
151 {USB_DEVICE(0x0eef, 0x0002), .driver_info = DEVTYPE_EGALAX},
152 {USB_DEVICE(0x1234, 0x0001), .driver_info = DEVTYPE_EGALAX},
153 {USB_DEVICE(0x1234, 0x0002), .driver_info = DEVTYPE_EGALAX},
156 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
157 {USB_DEVICE(0x134c, 0x0001), .driver_info = DEVTYPE_PANJIT},
158 {USB_DEVICE(0x134c, 0x0002), .driver_info = DEVTYPE_PANJIT},
159 {USB_DEVICE(0x134c, 0x0003), .driver_info = DEVTYPE_PANJIT},
160 {USB_DEVICE(0x134c, 0x0004), .driver_info = DEVTYPE_PANJIT},
163 #ifdef CONFIG_TOUCHSCREEN_USB_3M
164 {USB_DEVICE(0x0596, 0x0001), .driver_info = DEVTYPE_3M},
167 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
168 {USB_DEVICE(0x0403, 0xf9e9), .driver_info = DEVTYPE_ITM},
169 {USB_DEVICE(0x16e3, 0xf9e9), .driver_info = DEVTYPE_ITM},
172 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
173 {USB_DEVICE(0x1234, 0x5678), .driver_info = DEVTYPE_ETURBO},
176 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
177 {USB_DEVICE(0x0637, 0x0001), .driver_info = DEVTYPE_GUNZE},
180 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
181 {USB_DEVICE(0x0afa, 0x03e8), .driver_info = DEVTYPE_DMC_TSC10},
184 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
185 {USB_DEVICE(0x255e, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
186 {USB_DEVICE(0x595a, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
187 {USB_DEVICE(0x6615, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
188 {USB_DEVICE(0x6615, 0x0012), .driver_info = DEVTYPE_IRTOUCH_HIRES},
191 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
192 {USB_DEVICE(0x1391, 0x1000), .driver_info = DEVTYPE_IDEALTEK},
195 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
196 {USB_DEVICE(0x0dfc, 0x0001), .driver_info = DEVTYPE_GENERAL_TOUCH},
199 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
200 {USB_DEVICE(0x08f2, 0x007f), .driver_info = DEVTYPE_GOTOP},
201 {USB_DEVICE(0x08f2, 0x00ce), .driver_info = DEVTYPE_GOTOP},
202 {USB_DEVICE(0x08f2, 0x00f4), .driver_info = DEVTYPE_GOTOP},
205 #ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
206 {USB_DEVICE(0x0f92, 0x0001), .driver_info = DEVTYPE_JASTEC},
209 #ifdef CONFIG_TOUCHSCREEN_USB_E2I
210 {USB_DEVICE(0x1ac7, 0x0001), .driver_info = DEVTYPE_E2I},
213 #ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
214 {USB_DEVICE(0x14c8, 0x0003), .driver_info = DEVTYPE_ZYTRONIC},
217 #ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
219 {USB_DEVICE(0x0664, 0x0309), .driver_info = DEVTYPE_TC45USB},
221 {USB_DEVICE(0x0664, 0x0306), .driver_info = DEVTYPE_TC45USB},
224 #ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
225 /* data interface only */
226 {USB_DEVICE_AND_INTERFACE_INFO(0x10f0, 0x2002, 0x0a, 0x00, 0x00),
227 .driver_info = DEVTYPE_NEXIO},
228 {USB_DEVICE_AND_INTERFACE_INFO(0x1870, 0x0001, 0x0a, 0x00, 0x00),
229 .driver_info = DEVTYPE_NEXIO},
232 #ifdef CONFIG_TOUCHSCREEN_USB_ELO
233 {USB_DEVICE(0x04e7, 0x0020), .driver_info = DEVTYPE_ELO},
236 #ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
237 {USB_DEVICE(0x7374, 0x0001), .driver_info = DEVTYPE_ETOUCH},
244 /*****************************************************************************
248 #ifdef CONFIG_TOUCHSCREEN_USB_E2I
249 static int e2i_init(struct usbtouch_usb *usbtouch)
252 struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
254 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
255 0x01, 0x02, 0x0000, 0x0081,
256 NULL, 0, USB_CTRL_SET_TIMEOUT);
258 dev_dbg(&usbtouch->interface->dev,
259 "%s - usb_control_msg - E2I_RESET - bytes|err: %d\n",
264 static int e2i_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
266 int tmp = (pkt[0] << 8) | pkt[1];
267 dev->x = (pkt[2] << 8) | pkt[3];
268 dev->y = (pkt[4] << 8) | pkt[5];
271 dev->touch = (tmp > 0);
272 dev->press = (tmp > 0 ? tmp : 0);
279 /*****************************************************************************
283 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
289 #define EGALAX_PKT_TYPE_MASK 0xFE
290 #define EGALAX_PKT_TYPE_REPT 0x80
291 #define EGALAX_PKT_TYPE_DIAG 0x0A
293 static int egalax_init(struct usbtouch_usb *usbtouch)
297 struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
300 * An eGalax diagnostic packet kicks the device into using the right
301 * protocol. We send a "check active" packet. The response will be
302 * read later and ignored.
305 buf = kmalloc(3, GFP_KERNEL);
309 buf[0] = EGALAX_PKT_TYPE_DIAG;
310 buf[1] = 1; /* length */
311 buf[2] = 'A'; /* command - check active */
313 for (i = 0; i < 3; i++) {
314 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
316 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
318 USB_CTRL_SET_TIMEOUT);
332 static int egalax_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
334 if ((pkt[0] & EGALAX_PKT_TYPE_MASK) != EGALAX_PKT_TYPE_REPT)
337 dev->x = ((pkt[3] & 0x0F) << 7) | (pkt[4] & 0x7F);
338 dev->y = ((pkt[1] & 0x0F) << 7) | (pkt[2] & 0x7F);
339 dev->touch = pkt[0] & 0x01;
344 static int egalax_get_pkt_len(unsigned char *buf, int len)
346 switch (buf[0] & EGALAX_PKT_TYPE_MASK) {
347 case EGALAX_PKT_TYPE_REPT:
350 case EGALAX_PKT_TYPE_DIAG:
361 /*****************************************************************************
365 #ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
371 #define ETOUCH_PKT_TYPE_MASK 0xFE
372 #define ETOUCH_PKT_TYPE_REPT 0x80
373 #define ETOUCH_PKT_TYPE_REPT2 0xB0
374 #define ETOUCH_PKT_TYPE_DIAG 0x0A
376 static int etouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
378 if ((pkt[0] & ETOUCH_PKT_TYPE_MASK) != ETOUCH_PKT_TYPE_REPT &&
379 (pkt[0] & ETOUCH_PKT_TYPE_MASK) != ETOUCH_PKT_TYPE_REPT2)
382 dev->x = ((pkt[1] & 0x1F) << 7) | (pkt[2] & 0x7F);
383 dev->y = ((pkt[3] & 0x1F) << 7) | (pkt[4] & 0x7F);
384 dev->touch = pkt[0] & 0x01;
389 static int etouch_get_pkt_len(unsigned char *buf, int len)
391 switch (buf[0] & ETOUCH_PKT_TYPE_MASK) {
392 case ETOUCH_PKT_TYPE_REPT:
393 case ETOUCH_PKT_TYPE_REPT2:
396 case ETOUCH_PKT_TYPE_DIAG:
407 /*****************************************************************************
410 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
411 static int panjit_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
413 dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1];
414 dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3];
415 dev->touch = pkt[0] & 0x01;
422 /*****************************************************************************
425 #ifdef CONFIG_TOUCHSCREEN_USB_3M
427 #define MTOUCHUSB_ASYNC_REPORT 1
428 #define MTOUCHUSB_RESET 7
429 #define MTOUCHUSB_REQ_CTRLLR_ID 10
431 #define MTOUCHUSB_REQ_CTRLLR_ID_LEN 16
433 static int mtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
436 dev->x = (pkt[4] << 8) | pkt[3];
437 dev->y = 0xffff - ((pkt[6] << 8) | pkt[5]);
439 dev->x = (pkt[8] << 8) | pkt[7];
440 dev->y = (pkt[10] << 8) | pkt[9];
442 dev->touch = (pkt[2] & 0x40) ? 1 : 0;
452 static ssize_t mtouch_firmware_rev_show(struct device *dev,
453 struct device_attribute *attr, char *output)
455 struct usb_interface *intf = to_usb_interface(dev);
456 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
457 struct mtouch_priv *priv = usbtouch->priv;
459 return scnprintf(output, PAGE_SIZE, "%1x.%1x\n",
460 priv->fw_rev_major, priv->fw_rev_minor);
462 static DEVICE_ATTR(firmware_rev, 0444, mtouch_firmware_rev_show, NULL);
464 static struct attribute *mtouch_attrs[] = {
465 &dev_attr_firmware_rev.attr,
469 static const struct attribute_group mtouch_attr_group = {
470 .attrs = mtouch_attrs,
473 static int mtouch_get_fw_revision(struct usbtouch_usb *usbtouch)
475 struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
476 struct mtouch_priv *priv = usbtouch->priv;
480 buf = kzalloc(MTOUCHUSB_REQ_CTRLLR_ID_LEN, GFP_NOIO);
484 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
485 MTOUCHUSB_REQ_CTRLLR_ID,
486 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
487 0, 0, buf, MTOUCHUSB_REQ_CTRLLR_ID_LEN,
488 USB_CTRL_SET_TIMEOUT);
489 if (ret != MTOUCHUSB_REQ_CTRLLR_ID_LEN) {
490 dev_warn(&usbtouch->interface->dev,
491 "Failed to read FW rev: %d\n", ret);
492 ret = ret < 0 ? ret : -EIO;
496 priv->fw_rev_major = buf[3];
497 priv->fw_rev_minor = buf[4];
506 static int mtouch_alloc(struct usbtouch_usb *usbtouch)
510 usbtouch->priv = kmalloc(sizeof(struct mtouch_priv), GFP_KERNEL);
514 ret = sysfs_create_group(&usbtouch->interface->dev.kobj,
517 kfree(usbtouch->priv);
518 usbtouch->priv = NULL;
525 static int mtouch_init(struct usbtouch_usb *usbtouch)
528 struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
530 ret = mtouch_get_fw_revision(usbtouch);
534 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
536 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
537 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
538 dev_dbg(&usbtouch->interface->dev,
539 "%s - usb_control_msg - MTOUCHUSB_RESET - bytes|err: %d\n",
545 for (i = 0; i < 3; i++) {
546 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
547 MTOUCHUSB_ASYNC_REPORT,
548 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
549 1, 1, NULL, 0, USB_CTRL_SET_TIMEOUT);
550 dev_dbg(&usbtouch->interface->dev,
551 "%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d\n",
559 /* Default min/max xy are the raw values, override if using hw-calib */
561 input_set_abs_params(usbtouch->input, ABS_X, 0, 0xffff, 0, 0);
562 input_set_abs_params(usbtouch->input, ABS_Y, 0, 0xffff, 0, 0);
568 static void mtouch_exit(struct usbtouch_usb *usbtouch)
570 struct mtouch_priv *priv = usbtouch->priv;
572 sysfs_remove_group(&usbtouch->interface->dev.kobj, &mtouch_attr_group);
578 /*****************************************************************************
581 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
582 static int itm_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
586 * ITM devices report invalid x/y data if not touched.
587 * if the screen was touched before but is not touched any more
588 * report touch as 0 with the last valid x/y data once. then stop
589 * reporting data until touched again.
591 dev->press = ((pkt[2] & 0x01) << 7) | (pkt[5] & 0x7F);
593 touch = ~pkt[7] & 0x20;
603 dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[3] & 0x7F);
604 dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[4] & 0x7F);
612 /*****************************************************************************
615 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
619 static int eturbo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
623 /* packets should start with sync */
624 if (!(pkt[0] & 0x80))
627 shift = (6 - (pkt[0] & 0x03));
628 dev->x = ((pkt[3] << 7) | pkt[4]) >> shift;
629 dev->y = ((pkt[1] << 7) | pkt[2]) >> shift;
630 dev->touch = (pkt[0] & 0x10) ? 1 : 0;
635 static int eturbo_get_pkt_len(unsigned char *buf, int len)
646 /*****************************************************************************
649 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
650 static int gunze_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
652 if (!(pkt[0] & 0x80) || ((pkt[1] | pkt[2] | pkt[3]) & 0x80))
655 dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[2] & 0x7F);
656 dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[3] & 0x7F);
657 dev->touch = pkt[0] & 0x20;
663 /*****************************************************************************
666 * Documentation about the controller and it's protocol can be found at
667 * http://www.dmccoltd.com/files/controler/tsc10usb_pi_e.pdf
668 * http://www.dmccoltd.com/files/controler/tsc25_usb_e.pdf
670 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
672 /* supported data rates. currently using 130 */
673 #define TSC10_RATE_POINT 0x50
674 #define TSC10_RATE_30 0x40
675 #define TSC10_RATE_50 0x41
676 #define TSC10_RATE_80 0x42
677 #define TSC10_RATE_100 0x43
678 #define TSC10_RATE_130 0x44
679 #define TSC10_RATE_150 0x45
682 #define TSC10_CMD_RESET 0x55
683 #define TSC10_CMD_RATE 0x05
684 #define TSC10_CMD_DATA1 0x01
686 static int dmc_tsc10_init(struct usbtouch_usb *usbtouch)
688 struct usb_device *dev = interface_to_usbdev(usbtouch->interface);
692 buf = kmalloc(2, GFP_NOIO);
696 buf[0] = buf[1] = 0xFF;
697 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
699 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
700 0, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
703 if (buf[0] != 0x06) {
708 /* TSC-25 data sheet specifies a delay after the RESET command */
711 /* set coordinate output rate */
712 buf[0] = buf[1] = 0xFF;
713 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
715 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
716 TSC10_RATE_150, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
719 if ((buf[0] != 0x06) && (buf[0] != 0x15 || buf[1] != 0x01)) {
724 /* start sending data */
725 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
727 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
728 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
736 static int dmc_tsc10_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
738 dev->x = ((pkt[2] & 0x03) << 8) | pkt[1];
739 dev->y = ((pkt[4] & 0x03) << 8) | pkt[3];
740 dev->touch = pkt[0] & 0x01;
747 /*****************************************************************************
750 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
751 static int irtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
753 dev->x = (pkt[3] << 8) | pkt[2];
754 dev->y = (pkt[5] << 8) | pkt[4];
755 dev->touch = (pkt[1] & 0x03) ? 1 : 0;
761 /*****************************************************************************
762 * ET&T TC5UH/TC4UM part
764 #ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
765 static int tc45usb_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
767 dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1];
768 dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3];
769 dev->touch = pkt[0] & 0x01;
775 /*****************************************************************************
776 * IdealTEK URTC1000 Part
778 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
782 static int idealtek_get_pkt_len(unsigned char *buf, int len)
791 static int idealtek_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
793 switch (pkt[0] & 0x98) {
795 /* touch data in IdealTEK mode */
796 dev->x = (pkt[1] << 5) | (pkt[2] >> 2);
797 dev->y = (pkt[3] << 5) | (pkt[4] >> 2);
798 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
802 /* touch data in MT emulation mode */
803 dev->x = (pkt[2] << 5) | (pkt[1] >> 2);
804 dev->y = (pkt[4] << 5) | (pkt[3] >> 2);
805 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
814 /*****************************************************************************
817 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
818 static int general_touch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
820 dev->x = (pkt[2] << 8) | pkt[1];
821 dev->y = (pkt[4] << 8) | pkt[3];
822 dev->press = pkt[5] & 0xff;
823 dev->touch = pkt[0] & 0x01;
829 /*****************************************************************************
832 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
833 static int gotop_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
835 dev->x = ((pkt[1] & 0x38) << 4) | pkt[2];
836 dev->y = ((pkt[1] & 0x07) << 7) | pkt[3];
837 dev->touch = pkt[0] & 0x01;
843 /*****************************************************************************
846 #ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
847 static int jastec_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
849 dev->x = ((pkt[0] & 0x3f) << 6) | (pkt[2] & 0x3f);
850 dev->y = ((pkt[1] & 0x3f) << 6) | (pkt[3] & 0x3f);
851 dev->touch = (pkt[0] & 0x40) >> 6;
857 /*****************************************************************************
860 #ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
861 static int zytronic_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
863 struct usb_interface *intf = dev->interface;
866 case 0x3A: /* command response */
867 dev_dbg(&intf->dev, "%s: Command response %d\n", __func__, pkt[1]);
870 case 0xC0: /* down */
871 dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7);
872 dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7);
874 dev_dbg(&intf->dev, "%s: down %d,%d\n", __func__, dev->x, dev->y);
878 dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7);
879 dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7);
881 dev_dbg(&intf->dev, "%s: up %d,%d\n", __func__, dev->x, dev->y);
885 dev_dbg(&intf->dev, "%s: Unknown return %d\n", __func__, pkt[0]);
893 /*****************************************************************************
896 #ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
898 #define NEXIO_TIMEOUT 5000
899 #define NEXIO_BUFSIZE 1024
900 #define NEXIO_THRESHOLD 50
904 unsigned char *ack_buf;
907 struct nexio_touch_packet {
908 u8 flags; /* 0xe1 = touch, 0xe1 = release */
909 __be16 data_len; /* total bytes of touch data */
910 __be16 x_len; /* bytes for X axis */
911 __be16 y_len; /* bytes for Y axis */
913 } __attribute__ ((packed));
915 static unsigned char nexio_ack_pkt[2] = { 0xaa, 0x02 };
916 static unsigned char nexio_init_pkt[4] = { 0x82, 0x04, 0x0a, 0x0f };
918 static void nexio_ack_complete(struct urb *urb)
922 static int nexio_alloc(struct usbtouch_usb *usbtouch)
924 struct nexio_priv *priv;
927 usbtouch->priv = kmalloc(sizeof(struct nexio_priv), GFP_KERNEL);
931 priv = usbtouch->priv;
933 priv->ack_buf = kmemdup(nexio_ack_pkt, sizeof(nexio_ack_pkt),
938 priv->ack = usb_alloc_urb(0, GFP_KERNEL);
940 dev_dbg(&usbtouch->interface->dev,
941 "%s - usb_alloc_urb failed: usbtouch->ack\n", __func__);
948 kfree(priv->ack_buf);
955 static int nexio_init(struct usbtouch_usb *usbtouch)
957 struct usb_device *dev = interface_to_usbdev(usbtouch->interface);
958 struct usb_host_interface *interface = usbtouch->interface->cur_altsetting;
959 struct nexio_priv *priv = usbtouch->priv;
963 char *firmware_ver = NULL, *device_name = NULL;
964 int input_ep = 0, output_ep = 0;
966 /* find first input and output endpoint */
967 for (i = 0; i < interface->desc.bNumEndpoints; i++) {
969 usb_endpoint_dir_in(&interface->endpoint[i].desc))
970 input_ep = interface->endpoint[i].desc.bEndpointAddress;
972 usb_endpoint_dir_out(&interface->endpoint[i].desc))
973 output_ep = interface->endpoint[i].desc.bEndpointAddress;
975 if (!input_ep || !output_ep)
978 buf = kmalloc(NEXIO_BUFSIZE, GFP_NOIO);
982 /* two empty reads */
983 for (i = 0; i < 2; i++) {
984 ret = usb_bulk_msg(dev, usb_rcvbulkpipe(dev, input_ep),
985 buf, NEXIO_BUFSIZE, &actual_len,
991 /* send init command */
992 memcpy(buf, nexio_init_pkt, sizeof(nexio_init_pkt));
993 ret = usb_bulk_msg(dev, usb_sndbulkpipe(dev, output_ep),
994 buf, sizeof(nexio_init_pkt), &actual_len,
1000 for (i = 0; i < 3; i++) {
1001 memset(buf, 0, NEXIO_BUFSIZE);
1002 ret = usb_bulk_msg(dev, usb_rcvbulkpipe(dev, input_ep),
1003 buf, NEXIO_BUFSIZE, &actual_len,
1005 if (ret < 0 || actual_len < 1 || buf[1] != actual_len)
1008 case 0x83: /* firmware version */
1010 firmware_ver = kstrdup(&buf[2], GFP_NOIO);
1012 case 0x84: /* device name */
1014 device_name = kstrdup(&buf[2], GFP_NOIO);
1019 printk(KERN_INFO "Nexio device: %s, firmware version: %s\n",
1020 device_name, firmware_ver);
1022 kfree(firmware_ver);
1025 usb_fill_bulk_urb(priv->ack, dev, usb_sndbulkpipe(dev, output_ep),
1026 priv->ack_buf, sizeof(nexio_ack_pkt),
1027 nexio_ack_complete, usbtouch);
1035 static void nexio_exit(struct usbtouch_usb *usbtouch)
1037 struct nexio_priv *priv = usbtouch->priv;
1039 usb_kill_urb(priv->ack);
1040 usb_free_urb(priv->ack);
1041 kfree(priv->ack_buf);
1045 static int nexio_read_data(struct usbtouch_usb *usbtouch, unsigned char *pkt)
1047 struct device *dev = &usbtouch->interface->dev;
1048 struct nexio_touch_packet *packet = (void *) pkt;
1049 struct nexio_priv *priv = usbtouch->priv;
1050 unsigned int data_len = be16_to_cpu(packet->data_len);
1051 unsigned int x_len = be16_to_cpu(packet->x_len);
1052 unsigned int y_len = be16_to_cpu(packet->y_len);
1053 int x, y, begin_x, begin_y, end_x, end_y, w, h, ret;
1055 /* got touch data? */
1056 if ((pkt[0] & 0xe0) != 0xe0)
1059 if (data_len > 0xff)
1065 ret = usb_submit_urb(priv->ack, GFP_ATOMIC);
1067 dev_warn(dev, "Failed to submit ACK URB: %d\n", ret);
1069 if (!usbtouch->type->max_xc) {
1070 usbtouch->type->max_xc = 2 * x_len;
1071 input_set_abs_params(usbtouch->input, ABS_X,
1072 0, usbtouch->type->max_xc, 0, 0);
1073 usbtouch->type->max_yc = 2 * y_len;
1074 input_set_abs_params(usbtouch->input, ABS_Y,
1075 0, usbtouch->type->max_yc, 0, 0);
1078 * The device reports state of IR sensors on X and Y axes.
1079 * Each byte represents "darkness" percentage (0-100) of one element.
1080 * 17" touchscreen reports only 64 x 52 bytes so the resolution is low.
1081 * This also means that there's a limited multi-touch capability but
1082 * it's disabled (and untested) here as there's no X driver for that.
1084 begin_x = end_x = begin_y = end_y = -1;
1085 for (x = 0; x < x_len; x++) {
1086 if (begin_x == -1 && packet->data[x] > NEXIO_THRESHOLD) {
1090 if (end_x == -1 && begin_x != -1 && packet->data[x] < NEXIO_THRESHOLD) {
1092 for (y = x_len; y < data_len; y++) {
1093 if (begin_y == -1 && packet->data[y] > NEXIO_THRESHOLD) {
1094 begin_y = y - x_len;
1098 begin_y != -1 && packet->data[y] < NEXIO_THRESHOLD) {
1099 end_y = y - 1 - x_len;
1100 w = end_x - begin_x;
1101 h = end_y - begin_y;
1104 input_report_abs(usbtouch->input,
1105 ABS_MT_TOUCH_MAJOR, max(w,h));
1106 input_report_abs(usbtouch->input,
1107 ABS_MT_TOUCH_MINOR, min(x,h));
1108 input_report_abs(usbtouch->input,
1109 ABS_MT_POSITION_X, 2*begin_x+w);
1110 input_report_abs(usbtouch->input,
1111 ABS_MT_POSITION_Y, 2*begin_y+h);
1112 input_report_abs(usbtouch->input,
1113 ABS_MT_ORIENTATION, w > h);
1114 input_mt_sync(usbtouch->input);
1117 usbtouch->x = 2 * begin_x + w;
1118 usbtouch->y = 2 * begin_y + h;
1119 usbtouch->touch = packet->flags & 0x01;
1120 begin_y = end_y = -1;
1124 begin_x = end_x = -1;
1133 /*****************************************************************************
1137 #ifdef CONFIG_TOUCHSCREEN_USB_ELO
1139 static int elo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
1141 dev->x = (pkt[3] << 8) | pkt[2];
1142 dev->y = (pkt[5] << 8) | pkt[4];
1143 dev->touch = pkt[6] > 0;
1144 dev->press = pkt[6];
1151 /*****************************************************************************
1152 * the different device descriptors
1155 static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
1156 unsigned char *pkt, int len);
1159 static struct usbtouch_device_info usbtouch_dev_info[] = {
1160 #ifdef CONFIG_TOUCHSCREEN_USB_ELO
1168 .read_data = elo_read_data,
1172 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
1173 [DEVTYPE_EGALAX] = {
1179 .process_pkt = usbtouch_process_multi,
1180 .get_pkt_len = egalax_get_pkt_len,
1181 .read_data = egalax_read_data,
1182 .init = egalax_init,
1186 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
1187 [DEVTYPE_PANJIT] = {
1193 .read_data = panjit_read_data,
1197 #ifdef CONFIG_TOUCHSCREEN_USB_3M
1204 .read_data = mtouch_read_data,
1205 .alloc = mtouch_alloc,
1206 .init = mtouch_init,
1207 .exit = mtouch_exit,
1211 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
1219 .read_data = itm_read_data,
1223 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
1224 [DEVTYPE_ETURBO] = {
1230 .process_pkt = usbtouch_process_multi,
1231 .get_pkt_len = eturbo_get_pkt_len,
1232 .read_data = eturbo_read_data,
1236 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
1243 .read_data = gunze_read_data,
1247 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
1248 [DEVTYPE_DMC_TSC10] = {
1254 .init = dmc_tsc10_init,
1255 .read_data = dmc_tsc10_read_data,
1259 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
1260 [DEVTYPE_IRTOUCH] = {
1266 .read_data = irtouch_read_data,
1269 [DEVTYPE_IRTOUCH_HIRES] = {
1275 .read_data = irtouch_read_data,
1279 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
1280 [DEVTYPE_IDEALTEK] = {
1286 .process_pkt = usbtouch_process_multi,
1287 .get_pkt_len = idealtek_get_pkt_len,
1288 .read_data = idealtek_read_data,
1292 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
1293 [DEVTYPE_GENERAL_TOUCH] = {
1299 .read_data = general_touch_read_data,
1303 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
1310 .read_data = gotop_read_data,
1314 #ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
1315 [DEVTYPE_JASTEC] = {
1321 .read_data = jastec_read_data,
1325 #ifdef CONFIG_TOUCHSCREEN_USB_E2I
1333 .read_data = e2i_read_data,
1337 #ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
1338 [DEVTYPE_ZYTRONIC] = {
1344 .read_data = zytronic_read_data,
1349 #ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
1350 [DEVTYPE_TC45USB] = {
1356 .read_data = tc45usb_read_data,
1360 #ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
1364 .read_data = nexio_read_data,
1365 .alloc = nexio_alloc,
1370 #ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
1371 [DEVTYPE_ETOUCH] = {
1377 .process_pkt = usbtouch_process_multi,
1378 .get_pkt_len = etouch_get_pkt_len,
1379 .read_data = etouch_read_data,
1385 /*****************************************************************************
1388 static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch,
1389 unsigned char *pkt, int len)
1391 struct usbtouch_device_info *type = usbtouch->type;
1393 if (!type->read_data(usbtouch, pkt))
1396 input_report_key(usbtouch->input, BTN_TOUCH, usbtouch->touch);
1399 input_report_abs(usbtouch->input, ABS_X, usbtouch->y);
1400 input_report_abs(usbtouch->input, ABS_Y, usbtouch->x);
1402 input_report_abs(usbtouch->input, ABS_X, usbtouch->x);
1403 input_report_abs(usbtouch->input, ABS_Y, usbtouch->y);
1405 if (type->max_press)
1406 input_report_abs(usbtouch->input, ABS_PRESSURE, usbtouch->press);
1407 input_sync(usbtouch->input);
1412 static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
1413 unsigned char *pkt, int len)
1415 unsigned char *buffer;
1416 int pkt_len, pos, buf_len, tmp;
1418 /* process buffer */
1419 if (unlikely(usbtouch->buf_len)) {
1420 /* try to get size */
1421 pkt_len = usbtouch->type->get_pkt_len(
1422 usbtouch->buffer, usbtouch->buf_len);
1425 if (unlikely(!pkt_len))
1428 /* need to append -pkt_len bytes before able to get size */
1429 if (unlikely(pkt_len < 0)) {
1430 int append = -pkt_len;
1431 if (unlikely(append > len))
1433 if (usbtouch->buf_len + append >= usbtouch->type->rept_size)
1435 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, append);
1436 usbtouch->buf_len += append;
1438 pkt_len = usbtouch->type->get_pkt_len(
1439 usbtouch->buffer, usbtouch->buf_len);
1445 tmp = pkt_len - usbtouch->buf_len;
1446 if (usbtouch->buf_len + tmp >= usbtouch->type->rept_size)
1448 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, tmp);
1449 usbtouch_process_pkt(usbtouch, usbtouch->buffer, pkt_len);
1452 buf_len = len - tmp;
1458 /* loop over the received packet, process */
1460 while (pos < buf_len) {
1461 /* get packet len */
1462 pkt_len = usbtouch->type->get_pkt_len(buffer + pos,
1465 /* unknown packet: skip one byte */
1466 if (unlikely(!pkt_len)) {
1471 /* full packet: process */
1472 if (likely((pkt_len > 0) && (pkt_len <= buf_len - pos))) {
1473 usbtouch_process_pkt(usbtouch, buffer + pos, pkt_len);
1475 /* incomplete packet: save in buffer */
1476 memcpy(usbtouch->buffer, buffer + pos, buf_len - pos);
1477 usbtouch->buf_len = buf_len - pos;
1484 usbtouch->buf_len = 0;
1490 static void usbtouch_irq(struct urb *urb)
1492 struct usbtouch_usb *usbtouch = urb->context;
1493 struct device *dev = &usbtouch->interface->dev;
1496 switch (urb->status) {
1501 /* this urb is timing out */
1503 "%s - urb timed out - was the device unplugged?\n",
1510 /* this urb is terminated, clean up */
1511 dev_dbg(dev, "%s - urb shutting down with status: %d\n",
1512 __func__, urb->status);
1515 dev_dbg(dev, "%s - nonzero urb status received: %d\n",
1516 __func__, urb->status);
1520 usbtouch->type->process_pkt(usbtouch, usbtouch->data, urb->actual_length);
1523 usb_mark_last_busy(interface_to_usbdev(usbtouch->interface));
1524 retval = usb_submit_urb(urb, GFP_ATOMIC);
1526 dev_err(dev, "%s - usb_submit_urb failed with result: %d\n",
1530 static int usbtouch_open(struct input_dev *input)
1532 struct usbtouch_usb *usbtouch = input_get_drvdata(input);
1535 usbtouch->irq->dev = interface_to_usbdev(usbtouch->interface);
1537 r = usb_autopm_get_interface(usbtouch->interface) ? -EIO : 0;
1541 mutex_lock(&usbtouch->pm_mutex);
1542 if (!usbtouch->type->irq_always) {
1543 if (usb_submit_urb(usbtouch->irq, GFP_KERNEL)) {
1549 usbtouch->interface->needs_remote_wakeup = 1;
1550 usbtouch->is_open = true;
1552 mutex_unlock(&usbtouch->pm_mutex);
1553 usb_autopm_put_interface(usbtouch->interface);
1558 static void usbtouch_close(struct input_dev *input)
1560 struct usbtouch_usb *usbtouch = input_get_drvdata(input);
1563 mutex_lock(&usbtouch->pm_mutex);
1564 if (!usbtouch->type->irq_always)
1565 usb_kill_urb(usbtouch->irq);
1566 usbtouch->is_open = false;
1567 mutex_unlock(&usbtouch->pm_mutex);
1569 r = usb_autopm_get_interface(usbtouch->interface);
1570 usbtouch->interface->needs_remote_wakeup = 0;
1572 usb_autopm_put_interface(usbtouch->interface);
1575 static int usbtouch_suspend
1576 (struct usb_interface *intf, pm_message_t message)
1578 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1580 usb_kill_urb(usbtouch->irq);
1585 static int usbtouch_resume(struct usb_interface *intf)
1587 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1590 mutex_lock(&usbtouch->pm_mutex);
1591 if (usbtouch->is_open || usbtouch->type->irq_always)
1592 result = usb_submit_urb(usbtouch->irq, GFP_NOIO);
1593 mutex_unlock(&usbtouch->pm_mutex);
1598 static int usbtouch_reset_resume(struct usb_interface *intf)
1600 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1603 /* reinit the device */
1604 if (usbtouch->type->init) {
1605 err = usbtouch->type->init(usbtouch);
1608 "%s - type->init() failed, err: %d\n",
1614 /* restart IO if needed */
1615 mutex_lock(&usbtouch->pm_mutex);
1616 if (usbtouch->is_open)
1617 err = usb_submit_urb(usbtouch->irq, GFP_NOIO);
1618 mutex_unlock(&usbtouch->pm_mutex);
1623 static void usbtouch_free_buffers(struct usb_device *udev,
1624 struct usbtouch_usb *usbtouch)
1626 usb_free_coherent(udev, usbtouch->data_size,
1627 usbtouch->data, usbtouch->data_dma);
1628 kfree(usbtouch->buffer);
1631 static struct usb_endpoint_descriptor *
1632 usbtouch_get_input_endpoint(struct usb_host_interface *interface)
1636 for (i = 0; i < interface->desc.bNumEndpoints; i++)
1637 if (usb_endpoint_dir_in(&interface->endpoint[i].desc))
1638 return &interface->endpoint[i].desc;
1643 static int usbtouch_probe(struct usb_interface *intf,
1644 const struct usb_device_id *id)
1646 struct usbtouch_usb *usbtouch;
1647 struct input_dev *input_dev;
1648 struct usb_endpoint_descriptor *endpoint;
1649 struct usb_device *udev = interface_to_usbdev(intf);
1650 struct usbtouch_device_info *type;
1653 /* some devices are ignored */
1654 if (id->driver_info == DEVTYPE_IGNORE)
1657 endpoint = usbtouch_get_input_endpoint(intf->cur_altsetting);
1661 usbtouch = kzalloc(sizeof(struct usbtouch_usb), GFP_KERNEL);
1662 input_dev = input_allocate_device();
1663 if (!usbtouch || !input_dev)
1666 mutex_init(&usbtouch->pm_mutex);
1668 type = &usbtouch_dev_info[id->driver_info];
1669 usbtouch->type = type;
1670 if (!type->process_pkt)
1671 type->process_pkt = usbtouch_process_pkt;
1673 usbtouch->data_size = type->rept_size;
1674 if (type->get_pkt_len) {
1676 * When dealing with variable-length packets we should
1677 * not request more than wMaxPacketSize bytes at once
1678 * as we do not know if there is more data coming or
1679 * we filled exactly wMaxPacketSize bytes and there is
1682 usbtouch->data_size = min(usbtouch->data_size,
1683 usb_endpoint_maxp(endpoint));
1686 usbtouch->data = usb_alloc_coherent(udev, usbtouch->data_size,
1687 GFP_KERNEL, &usbtouch->data_dma);
1688 if (!usbtouch->data)
1691 if (type->get_pkt_len) {
1692 usbtouch->buffer = kmalloc(type->rept_size, GFP_KERNEL);
1693 if (!usbtouch->buffer)
1694 goto out_free_buffers;
1697 usbtouch->irq = usb_alloc_urb(0, GFP_KERNEL);
1698 if (!usbtouch->irq) {
1700 "%s - usb_alloc_urb failed: usbtouch->irq\n", __func__);
1701 goto out_free_buffers;
1704 usbtouch->interface = intf;
1705 usbtouch->input = input_dev;
1707 if (udev->manufacturer)
1708 strlcpy(usbtouch->name, udev->manufacturer, sizeof(usbtouch->name));
1710 if (udev->product) {
1711 if (udev->manufacturer)
1712 strlcat(usbtouch->name, " ", sizeof(usbtouch->name));
1713 strlcat(usbtouch->name, udev->product, sizeof(usbtouch->name));
1716 if (!strlen(usbtouch->name))
1717 snprintf(usbtouch->name, sizeof(usbtouch->name),
1718 "USB Touchscreen %04x:%04x",
1719 le16_to_cpu(udev->descriptor.idVendor),
1720 le16_to_cpu(udev->descriptor.idProduct));
1722 usb_make_path(udev, usbtouch->phys, sizeof(usbtouch->phys));
1723 strlcat(usbtouch->phys, "/input0", sizeof(usbtouch->phys));
1725 input_dev->name = usbtouch->name;
1726 input_dev->phys = usbtouch->phys;
1727 usb_to_input_id(udev, &input_dev->id);
1728 input_dev->dev.parent = &intf->dev;
1730 input_set_drvdata(input_dev, usbtouch);
1732 input_dev->open = usbtouch_open;
1733 input_dev->close = usbtouch_close;
1735 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
1736 input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
1737 input_set_abs_params(input_dev, ABS_X, type->min_xc, type->max_xc, 0, 0);
1738 input_set_abs_params(input_dev, ABS_Y, type->min_yc, type->max_yc, 0, 0);
1739 if (type->max_press)
1740 input_set_abs_params(input_dev, ABS_PRESSURE, type->min_press,
1741 type->max_press, 0, 0);
1743 if (usb_endpoint_type(endpoint) == USB_ENDPOINT_XFER_INT)
1744 usb_fill_int_urb(usbtouch->irq, udev,
1745 usb_rcvintpipe(udev, endpoint->bEndpointAddress),
1746 usbtouch->data, usbtouch->data_size,
1747 usbtouch_irq, usbtouch, endpoint->bInterval);
1749 usb_fill_bulk_urb(usbtouch->irq, udev,
1750 usb_rcvbulkpipe(udev, endpoint->bEndpointAddress),
1751 usbtouch->data, usbtouch->data_size,
1752 usbtouch_irq, usbtouch);
1754 usbtouch->irq->dev = udev;
1755 usbtouch->irq->transfer_dma = usbtouch->data_dma;
1756 usbtouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1758 /* device specific allocations */
1760 err = type->alloc(usbtouch);
1763 "%s - type->alloc() failed, err: %d\n",
1769 /* device specific initialisation*/
1771 err = type->init(usbtouch);
1774 "%s - type->init() failed, err: %d\n",
1780 err = input_register_device(usbtouch->input);
1783 "%s - input_register_device failed, err: %d\n",
1788 usb_set_intfdata(intf, usbtouch);
1790 if (usbtouch->type->irq_always) {
1791 /* this can't fail */
1792 usb_autopm_get_interface(intf);
1793 err = usb_submit_urb(usbtouch->irq, GFP_KERNEL);
1795 usb_autopm_put_interface(intf);
1797 "%s - usb_submit_urb failed with result: %d\n",
1799 goto out_unregister_input;
1805 out_unregister_input:
1806 input_unregister_device(input_dev);
1810 type->exit(usbtouch);
1812 usb_free_urb(usbtouch->irq);
1814 usbtouch_free_buffers(udev, usbtouch);
1816 input_free_device(input_dev);
1821 static void usbtouch_disconnect(struct usb_interface *intf)
1823 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1829 "%s - usbtouch is initialized, cleaning up\n", __func__);
1831 usb_set_intfdata(intf, NULL);
1832 /* this will stop IO via close */
1833 input_unregister_device(usbtouch->input);
1834 usb_free_urb(usbtouch->irq);
1835 if (usbtouch->type->exit)
1836 usbtouch->type->exit(usbtouch);
1837 usbtouch_free_buffers(interface_to_usbdev(intf), usbtouch);
1841 MODULE_DEVICE_TABLE(usb, usbtouch_devices);
1843 static struct usb_driver usbtouch_driver = {
1844 .name = "usbtouchscreen",
1845 .probe = usbtouch_probe,
1846 .disconnect = usbtouch_disconnect,
1847 .suspend = usbtouch_suspend,
1848 .resume = usbtouch_resume,
1849 .reset_resume = usbtouch_reset_resume,
1850 .id_table = usbtouch_devices,
1851 .supports_autosuspend = 1,
1854 module_usb_driver(usbtouch_driver);
1856 MODULE_AUTHOR("Daniel Ritz <daniel.ritz@gmx.ch>");
1857 MODULE_DESCRIPTION("USB Touchscreen Driver");
1858 MODULE_LICENSE("GPL");
1860 MODULE_ALIAS("touchkitusb");
1861 MODULE_ALIAS("itmtouch");
1862 MODULE_ALIAS("mtouchusb");