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2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc 
 kernel/drivers/hid/hid-multitouch.c
....@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  *  HID driver for multitouch panels
34  *
....@@ -17,14 +18,9 @@
1718  *  Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
1819  *  Copyright (c) 2010      Henrik Rydberg <rydberg@euromail.se>
1920  *  Copyright (c) 2010      Canonical, Ltd.
20
- *
2121  */
2222 
2323 /*
24
- * This program is free software; you can redistribute it and/or modify it
25
- * under the terms of the GNU General Public License as published by the Free
26
- * Software Foundation; either version 2 of the License, or (at your option)
27
- * any later version.
2824  */
2925 
3026 /*
....@@ -72,6 +68,8 @@
7268 #define MT_QUIRK_STICKY_FINGERS		BIT(16)
7369 #define MT_QUIRK_ASUS_CUSTOM_UP		BIT(17)
7470 #define MT_QUIRK_WIN8_PTP_BUTTONS	BIT(18)
71
+#define MT_QUIRK_SEPARATE_APP_REPORT	BIT(19)
72
+#define MT_QUIRK_FORCE_MULTI_INPUT	BIT(20)
7573 
7674 #define MT_INPUTMODE_TOUCHSCREEN	0x02
7775 #define MT_INPUTMODE_TOUCHPAD		0x03
....@@ -107,6 +105,7 @@
107105 struct mt_application {
108106 	struct list_head list;
109107 	unsigned int application;
108
+	unsigned int report_id;
110109 	struct list_head mt_usages;	/* mt usages list */
111110 
112111 	__s32 quirks;
....@@ -190,7 +189,8 @@
190189 /* reserved					0x0011 */
191190 #define MT_CLS_WIN_8				0x0012
192191 #define MT_CLS_EXPORT_ALL_INPUTS		0x0013
193
-#define MT_CLS_WIN_8_DUAL			0x0014
192
+/* reserved					0x0014 */
193
+#define MT_CLS_WIN_8_FORCE_MULTI_INPUT		0x0015
194194 
195195 /* vendor specific classes */
196196 #define MT_CLS_3M				0x0101
....@@ -207,6 +207,7 @@
207207 #define MT_CLS_VTL				0x0110
208208 #define MT_CLS_GOOGLE				0x0111
209209 #define MT_CLS_RAZER_BLADE_STEALTH		0x0112
210
+#define MT_CLS_SMART_TECH			0x0113
210211 
211212 #define MT_DEFAULT_MAXCONTACT	10
212213 #define MT_MAX_MAXCONTACT	250
....@@ -267,17 +268,20 @@
267268 			MT_QUIRK_HOVERING |
268269 			MT_QUIRK_CONTACT_CNT_ACCURATE |
269270 			MT_QUIRK_STICKY_FINGERS |
270
-			MT_QUIRK_WIN8_PTP_BUTTONS },
271
+			MT_QUIRK_WIN8_PTP_BUTTONS,
272
+		.export_all_inputs = true },
271273 	{ .name = MT_CLS_EXPORT_ALL_INPUTS,
272274 		.quirks = MT_QUIRK_ALWAYS_VALID |
273275 			MT_QUIRK_CONTACT_CNT_ACCURATE,
274276 		.export_all_inputs = true },
275
-	{ .name = MT_CLS_WIN_8_DUAL,
277
+	{ .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
276278 		.quirks = MT_QUIRK_ALWAYS_VALID |
277279 			MT_QUIRK_IGNORE_DUPLICATES |
278280 			MT_QUIRK_HOVERING |
279281 			MT_QUIRK_CONTACT_CNT_ACCURATE |
280
-			MT_QUIRK_WIN8_PTP_BUTTONS,
282
+			MT_QUIRK_STICKY_FINGERS |
283
+			MT_QUIRK_WIN8_PTP_BUTTONS |
284
+			MT_QUIRK_FORCE_MULTI_INPUT,
281285 		.export_all_inputs = true },
282286 
283287 	/*
....@@ -356,6 +360,12 @@
356360 			MT_QUIRK_HOVERING |
357361 			MT_QUIRK_CONTACT_CNT_ACCURATE |
358362 			MT_QUIRK_WIN8_PTP_BUTTONS,
363
+	},
364
+	{ .name = MT_CLS_SMART_TECH,
365
+		.quirks = MT_QUIRK_ALWAYS_VALID |
366
+			MT_QUIRK_IGNORE_DUPLICATES |
367
+			MT_QUIRK_CONTACT_CNT_ACCURATE |
368
+			MT_QUIRK_SEPARATE_APP_REPORT,
359369 	},
360370 	{ }
361371 };
....@@ -513,8 +523,9 @@
513523 }
514524 
515525 static struct mt_application *mt_allocate_application(struct mt_device *td,
516
-						      unsigned int application)
526
+						      struct hid_report *report)
517527 {
528
+	unsigned int application = report->application;
518529 	struct mt_application *mt_application;
519530 
520531 	mt_application = devm_kzalloc(&td->hdev->dev, sizeof(*mt_application),
....@@ -539,6 +550,7 @@
539550 	mt_application->scantime = DEFAULT_ZERO;
540551 	mt_application->raw_cc = DEFAULT_ZERO;
541552 	mt_application->quirks = td->mtclass.quirks;
553
+	mt_application->report_id = report->id;
542554 
543555 	list_add_tail(&mt_application->list, &td->applications);
544556 
....@@ -546,19 +558,23 @@
546558 }
547559 
548560 static struct mt_application *mt_find_application(struct mt_device *td,
549
-						  unsigned int application)
561
+						  struct hid_report *report)
550562 {
563
+	unsigned int application = report->application;
551564 	struct mt_application *tmp, *mt_application = NULL;
552565 
553566 	list_for_each_entry(tmp, &td->applications, list) {
554567 		if (application == tmp->application) {
555
-			mt_application = tmp;
556
-			break;
568
+			if (!(td->mtclass.quirks & MT_QUIRK_SEPARATE_APP_REPORT) ||
569
+			    tmp->report_id == report->id) {
570
+				mt_application = tmp;
571
+				break;
572
+			}
557573 		}
558574 	}
559575 
560576 	if (!mt_application)
561
-		mt_application = mt_allocate_application(td, application);
577
+		mt_application = mt_allocate_application(td, report);
562578 
563579 	return mt_application;
564580 }
....@@ -575,7 +591,7 @@
575591 		return NULL;
576592 
577593 	rdata->report = report;
578
-	rdata->application = mt_find_application(td, report->application);
594
+	rdata->application = mt_find_application(td, report);
579595 
580596 	if (!rdata->application) {
581597 		devm_kfree(&td->hdev->dev, rdata);
....@@ -747,7 +763,7 @@
747763 			return 1;
748764 		case HID_DG_CONFIDENCE:
749765 			if ((cls->name == MT_CLS_WIN_8 ||
750
-				cls->name == MT_CLS_WIN_8_DUAL) &&
766
+			     cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT) &&
751767 				(field->application == HID_DG_TOUCHPAD ||
752768 				 field->application == HID_DG_TOUCHSCREEN))
753769 				app->quirks |= MT_QUIRK_CONFIDENCE;
....@@ -890,7 +906,7 @@
890906 		clear_bit(slotnum, app->pending_palm_slots);
891907 
892908 		input_mt_slot(input, slotnum);
893
-		input_mt_report_slot_state(input, MT_TOOL_PALM, false);
909
+		input_mt_report_slot_inactive(input);
894910 
895911 		need_sync = true;
896912 	}
....@@ -1139,7 +1155,7 @@
11391155 	int contact_count = -1;
11401156 
11411157 	/* sticky fingers release in progress, abort */
1142
-	if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1158
+	if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
11431159 		return;
11441160 
11451161 	scantime = *app->scantime;
....@@ -1220,7 +1236,7 @@
12201236 			del_timer(&td->release_timer);
12211237 	}
12221238 
1223
-	clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1239
+	clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
12241240 }
12251241 
12261242 static int mt_touch_input_configured(struct hid_device *hdev,
....@@ -1331,6 +1347,13 @@
13311347 	if (rdata->is_mt_collection)
13321348 		return mt_touch_input_mapping(hdev, hi, field, usage, bit, max,
13331349 					      application);
1350
+
1351
+	/*
1352
+	 * some egalax touchscreens have "application == DG_TOUCHSCREEN"
1353
+	 * for the stylus. Overwrite the hid_input application
1354
+	 */
1355
+	if (field->physical == HID_DG_STYLUS)
1356
+		hi->application = HID_DG_STYLUS;
13341357 
13351358 	/* let hid-core decide for the others */
13361359 	return 0;
....@@ -1518,16 +1541,13 @@
15181541 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
15191542 {
15201543 	struct mt_device *td = hid_get_drvdata(hdev);
1521
-	char *name;
15221544 	const char *suffix = NULL;
1523
-	unsigned int application = 0;
15241545 	struct mt_report_data *rdata;
15251546 	struct mt_application *mt_application = NULL;
15261547 	struct hid_report *report;
15271548 	int ret;
15281549 
15291550 	list_for_each_entry(report, &hi->reports, hidinput_list) {
1530
-		application = report->application;
15311551 		rdata = mt_find_report_data(td, report);
15321552 		if (!rdata) {
15331553 			hid_err(hdev, "failed to allocate data for report\n");
....@@ -1542,57 +1562,41 @@
15421562 			if (ret)
15431563 				return ret;
15441564 		}
1545
-
1546
-		/*
1547
-		 * some egalax touchscreens have "application == DG_TOUCHSCREEN"
1548
-		 * for the stylus. Check this first, and then rely on
1549
-		 * the application field.
1550
-		 */
1551
-		if (report->field[0]->physical == HID_DG_STYLUS) {
1552
-			suffix = "Pen";
1553
-			/* force BTN_STYLUS to allow tablet matching in udev */
1554
-			__set_bit(BTN_STYLUS, hi->input->keybit);
1555
-		}
15561565 	}
15571566 
1558
-	if (!suffix) {
1559
-		switch (application) {
1560
-		case HID_GD_KEYBOARD:
1561
-		case HID_GD_KEYPAD:
1562
-		case HID_GD_MOUSE:
1563
-		case HID_DG_TOUCHPAD:
1564
-		case HID_GD_SYSTEM_CONTROL:
1565
-		case HID_CP_CONSUMER_CONTROL:
1566
-		case HID_GD_WIRELESS_RADIO_CTLS:
1567
-		case HID_GD_SYSTEM_MULTIAXIS:
1568
-			/* already handled by hid core */
1569
-			break;
1570
-		case HID_DG_TOUCHSCREEN:
1571
-			/* we do not set suffix = "Touchscreen" */
1572
-			hi->input->name = hdev->name;
1573
-			break;
1574
-		case HID_DG_STYLUS:
1575
-			/* force BTN_STYLUS to allow tablet matching in udev */
1576
-			__set_bit(BTN_STYLUS, hi->input->keybit);
1577
-			break;
1578
-		case HID_VD_ASUS_CUSTOM_MEDIA_KEYS:
1579
-			suffix = "Custom Media Keys";
1580
-			break;
1581
-		default:
1582
-			suffix = "UNKNOWN";
1583
-			break;
1584
-		}
1567
+	switch (hi->application) {
1568
+	case HID_GD_KEYBOARD:
1569
+	case HID_GD_KEYPAD:
1570
+	case HID_GD_MOUSE:
1571
+	case HID_DG_TOUCHPAD:
1572
+	case HID_GD_SYSTEM_CONTROL:
1573
+	case HID_CP_CONSUMER_CONTROL:
1574
+	case HID_GD_WIRELESS_RADIO_CTLS:
1575
+	case HID_GD_SYSTEM_MULTIAXIS:
1576
+		/* already handled by hid core */
1577
+		break;
1578
+	case HID_DG_TOUCHSCREEN:
1579
+		/* we do not set suffix = "Touchscreen" */
1580
+		hi->input->name = hdev->name;
1581
+		break;
1582
+	case HID_VD_ASUS_CUSTOM_MEDIA_KEYS:
1583
+		suffix = "Custom Media Keys";
1584
+		break;
1585
+	case HID_DG_STYLUS:
1586
+		/* force BTN_STYLUS to allow tablet matching in udev */
1587
+		__set_bit(BTN_STYLUS, hi->input->keybit);
1588
+		fallthrough;
1589
+	case HID_DG_PEN:
1590
+		suffix = "Stylus";
1591
+		break;
1592
+	default:
1593
+		suffix = "UNKNOWN";
1594
+		break;
15851595 	}
15861596 
1587
-	if (suffix) {
1588
-		name = devm_kzalloc(&hi->input->dev,
1589
-				    strlen(hdev->name) + strlen(suffix) + 2,
1590
-				    GFP_KERNEL);
1591
-		if (name) {
1592
-			sprintf(name, "%s %s", hdev->name, suffix);
1593
-			hi->input->name = name;
1594
-		}
1595
-	}
1597
+	if (suffix)
1598
+		hi->input->name = devm_kasprintf(&hdev->dev, GFP_KERNEL,
1599
+						 "%s %s", hdev->name, suffix);
15961600 
15971601 	return 0;
15981602 }
....@@ -1639,9 +1643,7 @@
16391643 		if (mt) {
16401644 			for (i = 0; i < mt->num_slots; i++) {
16411645 				input_mt_slot(input_dev, i);
1642
-				input_mt_report_slot_state(input_dev,
1643
-							   MT_TOOL_FINGER,
1644
-							   false);
1646
+				input_mt_report_slot_inactive(input_dev);
16451647 			}
16461648 			input_mt_sync_frame(input_dev);
16471649 			input_sync(input_dev);
....@@ -1662,11 +1664,11 @@
16621664 	 * An input report came in just before we release the sticky fingers,
16631665 	 * it will take care of the sticky fingers.
16641666 	 */
1665
-	if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1667
+	if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
16661668 		return;
16671669 	if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
16681670 		mt_release_contacts(hdev);
1669
-	clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1671
+	clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
16701672 }
16711673 
16721674 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
....@@ -1712,6 +1714,11 @@
17121714 
17131715 	if (id->group != HID_GROUP_MULTITOUCH_WIN_8)
17141716 		hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1717
+
1718
+	if (mtclass->quirks & MT_QUIRK_FORCE_MULTI_INPUT) {
1719
+		hdev->quirks &= ~HID_QUIRK_INPUT_PER_APP;
1720
+		hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1721
+	}
17151722 
17161723 	timer_setup(&td->release_timer, mt_expired_timeout, 0);
17171724 
....@@ -1785,26 +1792,6 @@
17851792 		MT_USB_DEVICE(USB_VENDOR_ID_3M,
17861793 			USB_DEVICE_ID_3M3266) },
17871794 
1788
-	/* Alps devices */
1789
-	{ .driver_data = MT_CLS_WIN_8_DUAL,
1790
-		HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1791
-			USB_VENDOR_ID_ALPS_JP,
1792
-			HID_DEVICE_ID_ALPS_U1_DUAL_PTP) },
1793
-	{ .driver_data = MT_CLS_WIN_8_DUAL,
1794
-		HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1795
-			USB_VENDOR_ID_ALPS_JP,
1796
-			HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP) },
1797
-	{ .driver_data = MT_CLS_WIN_8_DUAL,
1798
-		HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1799
-			USB_VENDOR_ID_ALPS_JP,
1800
-			HID_DEVICE_ID_ALPS_1222) },
1801
-
1802
-	/* Lenovo X1 TAB Gen 2 */
1803
-	{ .driver_data = MT_CLS_WIN_8_DUAL,
1804
-		HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1805
-			   USB_VENDOR_ID_LENOVO,
1806
-			   USB_DEVICE_ID_LENOVO_X1_TAB) },
1807
-
18081795 	/* Anton devices */
18091796 	{ .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
18101797 		MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
....@@ -1838,12 +1825,6 @@
18381825 	{  .driver_data = MT_CLS_NSMU,
18391826 		MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
18401827 			USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1841
-
1842
-	/* Cirque devices */
1843
-	{ .driver_data = MT_CLS_WIN_8_DUAL,
1844
-		HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1845
-			I2C_VENDOR_ID_CIRQUE,
1846
-			I2C_PRODUCT_ID_CIRQUE_121F) },
18471828 
18481829 	/* CJTouch panels */
18491830 	{ .driver_data = MT_CLS_NSMU,
....@@ -1919,6 +1900,15 @@
19191900 		MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
19201901 			USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002) },
19211902 
1903
+	/* Elan devices */
1904
+	{ .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
1905
+		HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1906
+			USB_VENDOR_ID_ELAN, 0x313a) },
1907
+
1908
+	{ .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
1909
+		HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1910
+			USB_VENDOR_ID_ELAN, 0x3148) },
1911
+
19221912 	/* Elitegroup panel */
19231913 	{ .driver_data = MT_CLS_SERIAL,
19241914 		MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
....@@ -1985,6 +1975,24 @@
19851975 		HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC,
19861976 			USB_VENDOR_ID_LG, I2C_DEVICE_ID_LG_7010) },
19871977 
1978
+	/* Lenovo X1 TAB Gen 2 */
1979
+	{ .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
1980
+		HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1981
+			   USB_VENDOR_ID_LENOVO,
1982
+			   USB_DEVICE_ID_LENOVO_X1_TAB) },
1983
+
1984
+	/* Lenovo X1 TAB Gen 3 */
1985
+	{ .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
1986
+		HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1987
+			   USB_VENDOR_ID_LENOVO,
1988
+			   USB_DEVICE_ID_LENOVO_X1_TAB3) },
1989
+
1990
+	/* Lenovo X12 TAB Gen 1 */
1991
+	{ .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
1992
+		HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1993
+			   USB_VENDOR_ID_LENOVO,
1994
+			   USB_DEVICE_ID_LENOVO_X12_TAB) },
1995
+
19881996 	/* MosArt panels */
19891997 	{ .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
19901998 		MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
....@@ -2040,10 +2048,23 @@
20402048 		HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
20412049 			USB_VENDOR_ID_SYNAPTICS, 0x8323) },
20422050 
2051
+	/* Smart Tech panels */
2052
+	{ .driver_data = MT_CLS_SMART_TECH,
2053
+		MT_USB_DEVICE(0x0b8c, 0x0092)},
2054
+
20432055 	/* Stantum panels */
20442056 	{ .driver_data = MT_CLS_CONFIDENCE,
20452057 		MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
20462058 			USB_DEVICE_ID_MTP_STM)},
2059
+
2060
+	/* Synaptics devices */
2061
+	{ .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2062
+		HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2063
+			USB_VENDOR_ID_SYNAPTICS, 0xce08) },
2064
+
2065
+	{ .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2066
+		HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2067
+			USB_VENDOR_ID_SYNAPTICS, 0xce09) },
20472068 
20482069 	/* TopSeed panels */
20492070 	{ .driver_data = MT_CLS_TOPSEED,
....@@ -2111,6 +2132,9 @@
21112132 	{ .driver_data = MT_CLS_GOOGLE,
21122133 		HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE,
21132134 			USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) },
2135
+	{ .driver_data = MT_CLS_GOOGLE,
2136
+		HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, USB_VENDOR_ID_GOOGLE,
2137
+			USB_DEVICE_ID_GOOGLE_WHISKERS) },
21142138 
21152139 	/* Generic MT device */
21162140 	{ HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },