usbtouchscreen.c (722232bcd8086b37cd3af7d9e94e7e10b231979e) usbtouchscreen.c (2330ed18b27a8f4f10e48e0a1c65ede56e03825c)
1/******************************************************************************
2 * usbtouchscreen.c
3 * Driver for USB Touchscreens, supporting those devices:
4 * - eGalax Touchkit
5 * includes eTurboTouch CT-410/510/700
6 * - 3M/Microtouch EX II series
7 * - ITM
8 * - PanJit TouchSet
9 * - eTurboTouch
10 * - Gunze AHL61
11 * - DMC TSC-10/25
12 * - IRTOUCHSYSTEMS/UNITOP
13 * - IdealTEK URTC1000
14 * - General Touch
15 * - GoTop Super_Q2/GogoPen/PenPower tablets
16 * - JASTEC USB touch controller/DigiTech DTR-02U
1/******************************************************************************
2 * usbtouchscreen.c
3 * Driver for USB Touchscreens, supporting those devices:
4 * - eGalax Touchkit
5 * includes eTurboTouch CT-410/510/700
6 * - 3M/Microtouch EX II series
7 * - ITM
8 * - PanJit TouchSet
9 * - eTurboTouch
10 * - Gunze AHL61
11 * - DMC TSC-10/25
12 * - IRTOUCHSYSTEMS/UNITOP
13 * - IdealTEK URTC1000
14 * - General Touch
15 * - GoTop Super_Q2/GogoPen/PenPower tablets
16 * - JASTEC USB touch controller/DigiTech DTR-02U
17 * - Zytronic capacitive touchscreen
17 *
18 * Copyright (C) 2004-2007 by Daniel Ritz <daniel.ritz@gmx.ch>
19 * Copyright (C) by Todd E. Johnson (mtouchusb.c)
20 *
21 * This program is free software; you can redistribute it and/or
22 * modify it under the terms of the GNU General Public License as
23 * published by the Free Software Foundation; either version 2 of the
24 * License, or (at your option) any later version.

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68/* device specifc data/functions */
69struct usbtouch_usb;
70struct usbtouch_device_info {
71 int min_xc, max_xc;
72 int min_yc, max_yc;
73 int min_press, max_press;
74 int rept_size;
75
18 *
19 * Copyright (C) 2004-2007 by Daniel Ritz <daniel.ritz@gmx.ch>
20 * Copyright (C) by Todd E. Johnson (mtouchusb.c)
21 *
22 * This program is free software; you can redistribute it and/or
23 * modify it under the terms of the GNU General Public License as
24 * published by the Free Software Foundation; either version 2 of the
25 * License, or (at your option) any later version.

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69/* device specifc data/functions */
70struct usbtouch_usb;
71struct usbtouch_device_info {
72 int min_xc, max_xc;
73 int min_yc, max_yc;
74 int min_press, max_press;
75 int rept_size;
76
77 /*
78 * Always service the USB devices irq not just when the input device is
79 * open. This is useful when devices have a watchdog which prevents us
80 * from periodically polling the device. Leave this unset unless your
81 * touchscreen device requires it, as it does consume more of the USB
82 * bandwidth.
83 */
84 bool irq_always;
85
76 void (*process_pkt) (struct usbtouch_usb *usbtouch, unsigned char *pkt, int len);
77
78 /*
79 * used to get the packet len. possible return values:
80 * > 0: packet len
81 * = 0: skip one byte
82 * < 0: -return value more bytes needed
83 */

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116 DEVTYPE_GUNZE,
117 DEVTYPE_DMC_TSC10,
118 DEVTYPE_IRTOUCH,
119 DEVTYPE_IDEALTEK,
120 DEVTYPE_GENERAL_TOUCH,
121 DEVTYPE_GOTOP,
122 DEVTYPE_JASTEC,
123 DEVTYPE_E2I,
86 void (*process_pkt) (struct usbtouch_usb *usbtouch, unsigned char *pkt, int len);
87
88 /*
89 * used to get the packet len. possible return values:
90 * > 0: packet len
91 * = 0: skip one byte
92 * < 0: -return value more bytes needed
93 */

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126 DEVTYPE_GUNZE,
127 DEVTYPE_DMC_TSC10,
128 DEVTYPE_IRTOUCH,
129 DEVTYPE_IDEALTEK,
130 DEVTYPE_GENERAL_TOUCH,
131 DEVTYPE_GOTOP,
132 DEVTYPE_JASTEC,
133 DEVTYPE_E2I,
134 DEVTYPE_ZYTRONIC,
124};
125
126#define USB_DEVICE_HID_CLASS(vend, prod) \
127 .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS \
128 | USB_DEVICE_ID_MATCH_INT_PROTOCOL \
129 | USB_DEVICE_ID_MATCH_DEVICE, \
130 .idVendor = (vend), \
131 .idProduct = (prod), \

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196
197#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
198 {USB_DEVICE(0x0f92, 0x0001), .driver_info = DEVTYPE_JASTEC},
199#endif
200
201#ifdef CONFIG_TOUCHSCREEN_USB_E2I
202 {USB_DEVICE(0x1ac7, 0x0001), .driver_info = DEVTYPE_E2I},
203#endif
135};
136
137#define USB_DEVICE_HID_CLASS(vend, prod) \
138 .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS \
139 | USB_DEVICE_ID_MATCH_INT_PROTOCOL \
140 | USB_DEVICE_ID_MATCH_DEVICE, \
141 .idVendor = (vend), \
142 .idProduct = (prod), \

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207
208#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
209 {USB_DEVICE(0x0f92, 0x0001), .driver_info = DEVTYPE_JASTEC},
210#endif
211
212#ifdef CONFIG_TOUCHSCREEN_USB_E2I
213 {USB_DEVICE(0x1ac7, 0x0001), .driver_info = DEVTYPE_E2I},
214#endif
215
216#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
217 {USB_DEVICE(0x14c8, 0x0003), .driver_info = DEVTYPE_ZYTRONIC},
218#endif
219
204 {}
205};
206
207
208/*****************************************************************************
209 * e2i Part
210 */
211

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616 dev->x = ((pkt[0] & 0x3f) << 6) | (pkt[2] & 0x3f);
617 dev->y = ((pkt[1] & 0x3f) << 6) | (pkt[3] & 0x3f);
618 dev->touch = (pkt[0] & 0x40) >> 6;
619
620 return 1;
621}
622#endif
623
220 {}
221};
222
223
224/*****************************************************************************
225 * e2i Part
226 */
227

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632 dev->x = ((pkt[0] & 0x3f) << 6) | (pkt[2] & 0x3f);
633 dev->y = ((pkt[1] & 0x3f) << 6) | (pkt[3] & 0x3f);
634 dev->touch = (pkt[0] & 0x40) >> 6;
635
636 return 1;
637}
638#endif
639
640/*****************************************************************************
641 * Zytronic Part
642 */
643#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
644static int zytronic_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
645{
646 switch (pkt[0]) {
647 case 0x3A: /* command response */
648 dbg("%s: Command response %d", __func__, pkt[1]);
649 break;
624
650
651 case 0xC0: /* down */
652 dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7);
653 dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7);
654 dev->touch = 1;
655 dbg("%s: down %d,%d", __func__, dev->x, dev->y);
656 return 1;
657
658 case 0x80: /* up */
659 dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7);
660 dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7);
661 dev->touch = 0;
662 dbg("%s: up %d,%d", __func__, dev->x, dev->y);
663 return 1;
664
665 default:
666 dbg("%s: Unknown return %d", __func__, pkt[0]);
667 break;
668 }
669
670 return 0;
671}
672#endif
673
625/*****************************************************************************
626 * the different device descriptors
627 */
628#ifdef MULTI_PACKET
629static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
630 unsigned char *pkt, int len);
631#endif
632

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778 .max_xc = 0x7fff,
779 .min_yc = 0x0,
780 .max_yc = 0x7fff,
781 .rept_size = 6,
782 .init = e2i_init,
783 .read_data = e2i_read_data,
784 },
785#endif
674/*****************************************************************************
675 * the different device descriptors
676 */
677#ifdef MULTI_PACKET
678static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
679 unsigned char *pkt, int len);
680#endif
681

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827 .max_xc = 0x7fff,
828 .min_yc = 0x0,
829 .max_yc = 0x7fff,
830 .rept_size = 6,
831 .init = e2i_init,
832 .read_data = e2i_read_data,
833 },
834#endif
835
836#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
837 [DEVTYPE_ZYTRONIC] = {
838 .min_xc = 0x0,
839 .max_xc = 0x03ff,
840 .min_yc = 0x0,
841 .max_yc = 0x03ff,
842 .rept_size = 5,
843 .read_data = zytronic_read_data,
844 .irq_always = true,
845 },
846#endif
786};
787
788
789/*****************************************************************************
790 * Generic Part
791 */
792static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch,
793 unsigned char *pkt, int len)

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928}
929
930static int usbtouch_open(struct input_dev *input)
931{
932 struct usbtouch_usb *usbtouch = input_get_drvdata(input);
933
934 usbtouch->irq->dev = usbtouch->udev;
935
847};
848
849
850/*****************************************************************************
851 * Generic Part
852 */
853static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch,
854 unsigned char *pkt, int len)

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989}
990
991static int usbtouch_open(struct input_dev *input)
992{
993 struct usbtouch_usb *usbtouch = input_get_drvdata(input);
994
995 usbtouch->irq->dev = usbtouch->udev;
996
936 if (usb_submit_urb(usbtouch->irq, GFP_KERNEL))
937 return -EIO;
997 if (!usbtouch->type->irq_always) {
998 if (usb_submit_urb(usbtouch->irq, GFP_KERNEL))
999 return -EIO;
1000 }
938
939 return 0;
940}
941
942static void usbtouch_close(struct input_dev *input)
943{
944 struct usbtouch_usb *usbtouch = input_get_drvdata(input);
945
1001
1002 return 0;
1003}
1004
1005static void usbtouch_close(struct input_dev *input)
1006{
1007 struct usbtouch_usb *usbtouch = input_get_drvdata(input);
1008
946 usb_kill_urb(usbtouch->irq);
1009 if (!usbtouch->type->irq_always)
1010 usb_kill_urb(usbtouch->irq);
947}
948
949
950static void usbtouch_free_buffers(struct usb_device *udev,
951 struct usbtouch_usb *usbtouch)
952{
953 usb_buffer_free(udev, usbtouch->type->rept_size,
954 usbtouch->data, usbtouch->data_dma);

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1061 err = input_register_device(usbtouch->input);
1062 if (err) {
1063 dbg("%s - input_register_device failed, err: %d", __func__, err);
1064 goto out_free_buffers;
1065 }
1066
1067 usb_set_intfdata(intf, usbtouch);
1068
1011}
1012
1013
1014static void usbtouch_free_buffers(struct usb_device *udev,
1015 struct usbtouch_usb *usbtouch)
1016{
1017 usb_buffer_free(udev, usbtouch->type->rept_size,
1018 usbtouch->data, usbtouch->data_dma);

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1125 err = input_register_device(usbtouch->input);
1126 if (err) {
1127 dbg("%s - input_register_device failed, err: %d", __func__, err);
1128 goto out_free_buffers;
1129 }
1130
1131 usb_set_intfdata(intf, usbtouch);
1132
1133 if (usbtouch->type->irq_always)
1134 usb_submit_urb(usbtouch->irq, GFP_KERNEL);
1135
1069 return 0;
1070
1071out_free_buffers:
1072 usbtouch_free_buffers(udev, usbtouch);
1073out_free:
1074 input_free_device(input_dev);
1075 kfree(usbtouch);
1076 return err;

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1137
1138out_free_buffers:
1139 usbtouch_free_buffers(udev, usbtouch);
1140out_free:
1141 input_free_device(input_dev);
1142 kfree(usbtouch);
1143 return err;

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