Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid

Pull HID updates from Jiri Kosina:

 - support for Pro Pen slim, from Jason Gerecke

 - power management improvements to Intel-ISH driver, from Song Hongyan

 - UCLogic driver revamp in order to be able to support wider range of
   Huion tablets, from Nikolai Kondrashov

 - Asus Transbook support, from NOGUCHI Hiroshi

 - other assorted small bugfixes / cleanups and device ID additions

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: (46 commits)
  HID: Remove Waltop tablets from hid_have_special_driver
  HID: Remove KYE tablets from hid_have_special_driver
  HID: Remove hid-uclogic entries from hid_have_special_driver
  HID: uclogic: Do not initialize non-USB devices
  HID: uclogic: Add support for Ugee G5
  HID: uclogic: Support Gray-coded rotary encoders
  HID: uclogic: Support faking Wacom pad device ID
  HID: uclogic: Add support for XP-Pen Deco 01
  HID: uclogic: Add support for XP-Pen Star G640
  HID: uclogic: Add support for XP-Pen Star G540
  HID: uclogic: Add support for Ugee EX07S frame controls
  HID: uclogic: Add support for Ugee M540
  HID: uclogic: Add support for Ugee 2150
  HID: uclogic: Support v2 protocol
  HID: uclogic: Support fragmented high-res reports
  HID: uclogic: Support in-range reporting emulation
  HID: uclogic: Designate current protocol v1
  HID: uclogic: Re-initialize tablets on resume
  HID: uclogic: Extract tablet parameter discovery into a module
  HID: uclogic: Extract report descriptors to a module
  ...

drivers/hid/Kconfig

@@ -412,6 +412,12 @@ config HID_WALTOP
 	---help---
 	Support for Waltop tablets.
 
+config HID_VIEWSONIC
+	tristate "ViewSonic/Signotec"
+	depends on HID
+	help
+	  Support for ViewSonic/Signotec PD1011 signature pad.
+
 config HID_GYRATION
 	tristate "Gyration remote control"
 	depends on HID
@@ -590,6 +596,13 @@ config HID_MAGICMOUSE
 	Say Y here if you want support for the multi-touch features of the
 	Apple Wireless "Magic" Mouse and the Apple Wireless "Magic" Trackpad.
 
+config HID_MALTRON
+	tristate "Maltron L90 keyboard"
+	depends on HID
+	---help---
+	Adds support for the volume up, volume down, mute, and play/pause buttons
+	of the Maltron L90 keyboard.
+
 config HID_MAYFLASH
 	tristate "Mayflash game controller adapter force feedback"
 	depends on HID

drivers/hid/Makefile

@@ -66,6 +66,7 @@ obj-$(CONFIG_HID_LOGITECH)	+= hid-logitech.o
 obj-$(CONFIG_HID_LOGITECH_DJ)	+= hid-logitech-dj.o
 obj-$(CONFIG_HID_LOGITECH_HIDPP)	+= hid-logitech-hidpp.o
 obj-$(CONFIG_HID_MAGICMOUSE)	+= hid-magicmouse.o
+obj-$(CONFIG_HID_MALTRON)	+= hid-maltron.o
 obj-$(CONFIG_HID_MAYFLASH)	+= hid-mf.o
 obj-$(CONFIG_HID_MICROSOFT)	+= hid-microsoft.o
 obj-$(CONFIG_HID_MONTEREY)	+= hid-monterey.o
@@ -108,12 +109,16 @@ obj-$(CONFIG_HID_THRUSTMASTER)	+= hid-tmff.o
 obj-$(CONFIG_HID_TIVO)		+= hid-tivo.o
 obj-$(CONFIG_HID_TOPSEED)	+= hid-topseed.o
 obj-$(CONFIG_HID_TWINHAN)	+= hid-twinhan.o
+hid-uclogic-objs		:= hid-uclogic-core.o \
+				   hid-uclogic-rdesc.o \
+				   hid-uclogic-params.o
 obj-$(CONFIG_HID_UCLOGIC)	+= hid-uclogic.o
 obj-$(CONFIG_HID_UDRAW_PS3)	+= hid-udraw-ps3.o
 obj-$(CONFIG_HID_LED)		+= hid-led.o
 obj-$(CONFIG_HID_XINMO)		+= hid-xinmo.o
 obj-$(CONFIG_HID_ZEROPLUS)	+= hid-zpff.o
 obj-$(CONFIG_HID_ZYDACRON)	+= hid-zydacron.o
+obj-$(CONFIG_HID_VIEWSONIC)	+= hid-viewsonic.o
 
 wacom-objs			:= wacom_wac.o wacom_sys.o
 obj-$(CONFIG_HID_WACOM)		+= wacom.o

drivers/hid/hid-asus.c

@@ -32,6 +32,7 @@
 #include <linux/platform_data/x86/asus-wmi.h>
 #include <linux/input/mt.h>
 #include <linux/usb.h> /* For to_usb_interface for T100 touchpad intf check */
+#include <linux/power_supply.h>
 
 #include "hid-ids.h"
 
@@ -61,6 +62,13 @@ MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");
 #define CONTACT_TOUCH_MAJOR_MASK 0x07
 #define CONTACT_PRESSURE_MASK 0x7f
 
+#define	BATTERY_REPORT_ID	(0x03)
+#define	BATTERY_REPORT_SIZE	(1 + 8)
+#define	BATTERY_LEVEL_MAX	((u8)255)
+#define	BATTERY_STAT_DISCONNECT	(0)
+#define	BATTERY_STAT_CHARGING	(1)
+#define	BATTERY_STAT_FULL	(2)
+
 #define QUIRK_FIX_NOTEBOOK_REPORT	BIT(0)
 #define QUIRK_NO_INIT_REPORTS		BIT(1)
 #define QUIRK_SKIP_INPUT_MAPPING	BIT(2)
@@ -71,6 +79,7 @@ MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");
 #define QUIRK_T100CHI			BIT(7)
 #define QUIRK_G752_KEYBOARD		BIT(8)
 #define QUIRK_T101HA_DOCK		BIT(9)
+#define QUIRK_T90CHI			BIT(10)
 
 #define I2C_KEYBOARD_QUIRKS			(QUIRK_FIX_NOTEBOOK_REPORT | \
 						 QUIRK_NO_INIT_REPORTS | \
@@ -100,12 +109,21 @@ struct asus_touchpad_info {
 
 struct asus_drvdata {
 	unsigned long quirks;
+	struct hid_device *hdev;
 	struct input_dev *input;
 	struct asus_kbd_leds *kbd_backlight;
 	const struct asus_touchpad_info *tp;
 	bool enable_backlight;
+	struct power_supply *battery;
+	struct power_supply_desc battery_desc;
+	int battery_capacity;
+	int battery_stat;
+	bool battery_in_query;
+	unsigned long battery_next_query;
 };
 
+static int asus_report_battery(struct asus_drvdata *, u8 *, int);
+
 static const struct asus_touchpad_info asus_i2c_tp = {
 	.max_x = 2794,
 	.max_y = 1758,
@@ -259,6 +277,9 @@ static int asus_raw_event(struct hid_device *hdev,
 {
 	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 
+	if (drvdata->battery && data[0] == BATTERY_REPORT_ID)
+		return asus_report_battery(drvdata, data, size);
+
 	if (drvdata->tp && data[0] == INPUT_REPORT_ID)
 		return asus_report_input(drvdata, data, size);
 
@@ -428,6 +449,164 @@ static int asus_kbd_register_leds(struct hid_device *hdev)
 	return ret;
 }
 
+/*
+ * [0]       REPORT_ID (same value defined in report descriptor)
+ * [1]	     rest battery level. range [0..255]
+ * [2]..[7]  Bluetooth hardware address (MAC address)
+ * [8]       charging status
+ *            = 0 : AC offline / discharging
+ *            = 1 : AC online  / charging
+ *            = 2 : AC online  / fully charged
+ */
+static int asus_parse_battery(struct asus_drvdata *drvdata, u8 *data, int size)
+{
+	u8 sts;
+	u8 lvl;
+	int val;
+
+	lvl = data[1];
+	sts = data[8];
+
+	drvdata->battery_capacity = ((int)lvl * 100) / (int)BATTERY_LEVEL_MAX;
+
+	switch (sts) {
+	case BATTERY_STAT_CHARGING:
+		val = POWER_SUPPLY_STATUS_CHARGING;
+		break;
+	case BATTERY_STAT_FULL:
+		val = POWER_SUPPLY_STATUS_FULL;
+		break;
+	case BATTERY_STAT_DISCONNECT:
+	default:
+		val = POWER_SUPPLY_STATUS_DISCHARGING;
+		break;
+	}
+	drvdata->battery_stat = val;
+
+	return 0;
+}
+
+static int asus_report_battery(struct asus_drvdata *drvdata, u8 *data, int size)
+{
+	/* notify only the autonomous event by device */
+	if ((drvdata->battery_in_query == false) &&
+			 (size == BATTERY_REPORT_SIZE))
+		power_supply_changed(drvdata->battery);
+
+	return 0;
+}
+
+static int asus_battery_query(struct asus_drvdata *drvdata)
+{
+	u8 *buf;
+	int ret = 0;
+
+	buf = kmalloc(BATTERY_REPORT_SIZE, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
+	drvdata->battery_in_query = true;
+	ret = hid_hw_raw_request(drvdata->hdev, BATTERY_REPORT_ID,
+				buf, BATTERY_REPORT_SIZE,
+				HID_INPUT_REPORT, HID_REQ_GET_REPORT);
+	drvdata->battery_in_query = false;
+	if (ret == BATTERY_REPORT_SIZE)
+		ret = asus_parse_battery(drvdata, buf, BATTERY_REPORT_SIZE);
+	else
+		ret = -ENODATA;
+
+	kfree(buf);
+
+	return ret;
+}
+
+static enum power_supply_property asus_battery_props[] = {
+	POWER_SUPPLY_PROP_STATUS,
+	POWER_SUPPLY_PROP_PRESENT,
+	POWER_SUPPLY_PROP_CAPACITY,
+	POWER_SUPPLY_PROP_SCOPE,
+	POWER_SUPPLY_PROP_MODEL_NAME,
+};
+
+#define	QUERY_MIN_INTERVAL	(60 * HZ)	/* 60[sec] */
+
+static int asus_battery_get_property(struct power_supply *psy,
+				enum power_supply_property psp,
+				union power_supply_propval *val)
+{
+	struct asus_drvdata *drvdata = power_supply_get_drvdata(psy);
+	int ret = 0;
+
+	switch (psp) {
+	case POWER_SUPPLY_PROP_STATUS:
+	case POWER_SUPPLY_PROP_CAPACITY:
+		if (time_before(drvdata->battery_next_query, jiffies)) {
+			drvdata->battery_next_query =
+					 jiffies + QUERY_MIN_INTERVAL;
+			ret = asus_battery_query(drvdata);
+			if (ret)
+				return ret;
+		}
+		if (psp == POWER_SUPPLY_PROP_STATUS)
+			val->intval = drvdata->battery_stat;
+		else
+			val->intval = drvdata->battery_capacity;
+		break;
+	case POWER_SUPPLY_PROP_PRESENT:
+		val->intval = 1;
+		break;
+	case POWER_SUPPLY_PROP_SCOPE:
+		val->intval = POWER_SUPPLY_SCOPE_DEVICE;
+		break;
+	case POWER_SUPPLY_PROP_MODEL_NAME:
+		val->strval = drvdata->hdev->name;
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	return ret;
+}
+
+static int asus_battery_probe(struct hid_device *hdev)
+{
+	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
+	struct power_supply_config pscfg = { .drv_data = drvdata };
+	int ret = 0;
+
+	drvdata->battery_capacity = 0;
+	drvdata->battery_stat = POWER_SUPPLY_STATUS_UNKNOWN;
+	drvdata->battery_in_query = false;
+
+	drvdata->battery_desc.properties = asus_battery_props;
+	drvdata->battery_desc.num_properties = ARRAY_SIZE(asus_battery_props);
+	drvdata->battery_desc.get_property = asus_battery_get_property;
+	drvdata->battery_desc.type = POWER_SUPPLY_TYPE_BATTERY;
+	drvdata->battery_desc.use_for_apm = 0;
+	drvdata->battery_desc.name = devm_kasprintf(&hdev->dev, GFP_KERNEL,
+					"asus-keyboard-%s-battery",
+					strlen(hdev->uniq) ?
+					hdev->uniq : dev_name(&hdev->dev));
+	if (!drvdata->battery_desc.name)
+		return -ENOMEM;
+
+	drvdata->battery_next_query = jiffies;
+
+	drvdata->battery = devm_power_supply_register(&hdev->dev,
+				&(drvdata->battery_desc), &pscfg);
+	if (IS_ERR(drvdata->battery)) {
+		ret = PTR_ERR(drvdata->battery);
+		drvdata->battery = NULL;
+		hid_err(hdev, "Unable to register battery device\n");
+		return ret;
+	}
+
+	power_supply_powers(drvdata->battery, &hdev->dev);
+
+	return ret;
+}
+
 static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi)
 {
 	struct input_dev *input = hi->input;
@@ -500,7 +679,7 @@ static int asus_input_mapping(struct hid_device *hdev,
 	 * This avoids a bunch of non-functional hid_input devices getting
 	 * created because of the T100CHI using HID_QUIRK_MULTI_INPUT.
 	 */
-	if (drvdata->quirks & QUIRK_T100CHI) {
+	if (drvdata->quirks & (QUIRK_T100CHI | QUIRK_T90CHI)) {
 		if (field->application == (HID_UP_GENDESK | 0x0080) ||
 		    usage->hid == (HID_UP_GENDEVCTRLS | 0x0024) ||
 		    usage->hid == (HID_UP_GENDEVCTRLS | 0x0025) ||
@@ -660,6 +839,15 @@ static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id)
 
 	drvdata->quirks = id->driver_data;
 
+	/*
+	 * T90CHI's keyboard dock returns same ID values as T100CHI's dock.
+	 * Thus, identify T90CHI dock with product name string.
+	 */
+	if (strstr(hdev->name, "T90CHI")) {
+		drvdata->quirks &= ~QUIRK_T100CHI;
+		drvdata->quirks |= QUIRK_T90CHI;
+	}
+
 	if (drvdata->quirks & QUIRK_IS_MULTITOUCH)
 		drvdata->tp = &asus_i2c_tp;
 
@@ -694,6 +882,17 @@ static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id)
 	if (drvdata->quirks & QUIRK_NO_INIT_REPORTS)
 		hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
 
+	drvdata->hdev = hdev;
+
+	if (drvdata->quirks & (QUIRK_T100CHI | QUIRK_T90CHI)) {
+		ret = asus_battery_probe(hdev);
+		if (ret) {
+			hid_err(hdev,
+			    "Asus hid battery_probe failed: %d\n", ret);
+			return ret;
+		}
+	}
+
 	ret = hid_parse(hdev);
 	if (ret) {
 		hid_err(hdev, "Asus hid parse failed: %d\n", ret);
@@ -769,28 +968,44 @@ static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 		hid_info(hdev, "Fixing up Asus T100 keyb report descriptor\n");
 		rdesc[74] &= ~HID_MAIN_ITEM_CONSTANT;
 	}
-	/* For the T100CHI keyboard dock */
-	if (drvdata->quirks & QUIRK_T100CHI &&
-		 *rsize == 403 && rdesc[388] == 0x09 && rdesc[389] == 0x76) {
+	/* For the T100CHI/T90CHI keyboard dock */
+	if (drvdata->quirks & (QUIRK_T100CHI | QUIRK_T90CHI)) {
+		int rsize_orig;
+		int offs;
+
+		if (drvdata->quirks & QUIRK_T100CHI) {
+			rsize_orig = 403;
+			offs = 388;
+		} else {
+			rsize_orig = 306;
+			offs = 291;
+		}
+
 		/*
 		 * Change Usage (76h) to Usage Minimum (00h), Usage Maximum
 		 * (FFh) and clear the flags in the Input() byte.
 		 * Note the descriptor has a bogus 0 byte at the end so we
 		 * only need 1 extra byte.
 		 */
-		*rsize = 404;
-		rdesc = kmemdup(rdesc, *rsize, GFP_KERNEL);
-		if (!rdesc)
-			return NULL;
-
-		hid_info(hdev, "Fixing up T100CHI keyb report descriptor\n");
-		memmove(rdesc + 392, rdesc + 390, 12);
-		rdesc[388] = 0x19;
-		rdesc[389] = 0x00;
-		rdesc[390] = 0x29;
-		rdesc[391] = 0xff;
-		rdesc[402] = 0x00;
+		if (*rsize == rsize_orig &&
+			rdesc[offs] == 0x09 && rdesc[offs + 1] == 0x76) {
+			*rsize = rsize_orig + 1;
+			rdesc = kmemdup(rdesc, *rsize, GFP_KERNEL);
+			if (!rdesc)
+				return NULL;
+
+			hid_info(hdev, "Fixing up %s keyb report descriptor\n",
+				drvdata->quirks & QUIRK_T100CHI ?
+				"T100CHI" : "T90CHI");
+			memmove(rdesc + offs + 4, rdesc + offs + 2, 12);
+			rdesc[offs] = 0x19;
+			rdesc[offs + 1] = 0x00;
+			rdesc[offs + 2] = 0x29;
+			rdesc[offs + 3] = 0xff;
+			rdesc[offs + 14] = 0x00;
+		}
 	}
+
 	if (drvdata->quirks & QUIRK_G752_KEYBOARD &&
 		 *rsize == 75 && rdesc[61] == 0x15 && rdesc[62] == 0x00) {
 		/* report is missing usage mninum and maximum */

drivers/hid/hid-elan.c

@@ -393,7 +393,7 @@ static int elan_start_multitouch(struct hid_device *hdev)
 	 * This byte sequence will enable multitouch mode and disable
 	 * mouse emulation
 	 */
-	const unsigned char buf[] = { 0x0D, 0x00, 0x03, 0x21, 0x00 };
+	static const unsigned char buf[] = { 0x0D, 0x00, 0x03, 0x21, 0x00 };
 	unsigned char *dmabuf = kmemdup(buf, sizeof(buf), GFP_KERNEL);
 
 	if (!dmabuf)

drivers/hid/hid-ids.h

@@ -72,6 +72,7 @@
 
 #define USB_VENDOR_ID_ALCOR		0x058f
 #define USB_DEVICE_ID_ALCOR_USBRS232	0x9720
+#define USB_DEVICE_ID_ALCOR_MALTRON_KB 0x9410
 
 #define USB_VENDOR_ID_ALPS		0x0433
 #define USB_DEVICE_ID_IBM_GAMEPAD	0x1101
@@ -273,6 +274,7 @@
 #define USB_DEVICE_ID_CHICONY_PIXART_USB_OPTICAL_MOUSE	0x1053
 #define USB_DEVICE_ID_CHICONY_WIRELESS2	0x1123
 #define USB_DEVICE_ID_ASUS_AK1D		0x1125
+#define USB_DEVICE_ID_CHICONY_TOSHIBA_WT10A	0x1408
 #define USB_DEVICE_ID_CHICONY_ACER_SWITCH12	0x1421
 
 #define USB_VENDOR_ID_CHUNGHWAT		0x2247
@@ -661,6 +663,7 @@
 #define USB_DEVICE_ID_KYE_MOUSEPEN_I608X_V2	0x501a
 #define USB_DEVICE_ID_KYE_EASYPEN_M610X	0x5013
 #define USB_DEVICE_ID_KYE_PENSKETCH_M912	0x5015
+#define USB_DEVICE_ID_KYE_EASYPEN_M406XE	0x5019
 
 #define USB_VENDOR_ID_LABTEC		0x1020
 #define USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD	0x0006
@@ -714,6 +717,7 @@
 #define USB_DEVICE_ID_LENOVO_TPPRODOCK	0x6067
 #define USB_DEVICE_ID_LENOVO_X1_COVER	0x6085
 #define USB_DEVICE_ID_LENOVO_X1_TAB	0x60a3
+#define USB_DEVICE_ID_LENOVO_X1_TAB3	0x60b5
 
 #define USB_VENDOR_ID_LG		0x1fd2
 #define USB_DEVICE_ID_LG_MULTITOUCH	0x0064
@@ -744,6 +748,7 @@
 #define USB_DEVICE_ID_LOGITECH_WINGMAN_F3D	0xc283
 #define USB_DEVICE_ID_LOGITECH_FORCE3D_PRO	0xc286
 #define USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940	0xc287
+#define USB_DEVICE_ID_LOGITECH_WINGMAN_FG	0xc20e
 #define USB_DEVICE_ID_LOGITECH_WINGMAN_FFG	0xc293
 #define USB_DEVICE_ID_LOGITECH_WHEEL	0xc294
 #define USB_DEVICE_ID_LOGITECH_MOMO_WHEEL	0xc295
@@ -1134,11 +1139,16 @@
 #define USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850	0x0522
 #define USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60	0x0781
 #define USB_DEVICE_ID_UCLOGIC_DRAWIMAGE_G3	0x3031
-#define USB_DEVICE_ID_UGEE_TABLET_81		0x0081
-#define USB_DEVICE_ID_UGEE_TABLET_45		0x0045
+#define USB_DEVICE_ID_UCLOGIC_UGEE_TABLET_81	0x0081
+#define USB_DEVICE_ID_UCLOGIC_UGEE_TABLET_45	0x0045
+#define USB_DEVICE_ID_UCLOGIC_UGEE_TABLET_47	0x0047
 #define USB_DEVICE_ID_YIYNOVA_TABLET		0x004d
 
 #define USB_VENDOR_ID_UGEE		0x28bd
+#define USB_DEVICE_ID_UGEE_XPPEN_TABLET_G540	0x0075
+#define USB_DEVICE_ID_UGEE_XPPEN_TABLET_G640	0x0094
+#define USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO01	0x0042
+#define USB_DEVICE_ID_UGEE_TABLET_G5		0x0074
 #define USB_DEVICE_ID_UGEE_TABLET_EX07S		0x0071
 
 #define USB_VENDOR_ID_UNITEC	0x227d
@@ -1240,4 +1250,10 @@
 #define USB_VENDOR_ID_UGTIZER			0x2179
 #define USB_DEVICE_ID_UGTIZER_TABLET_GP0610	0x0053
 
+#define USB_VENDOR_ID_VIEWSONIC			0x0543
+#define USB_DEVICE_ID_VIEWSONIC_PD1011		0xe621
+
+#define USB_VENDOR_ID_SIGNOTEC			0x2133
+#define USB_DEVICE_ID_SIGNOTEC_VIEWSONIC_PD1011	0x0018
+
 #endif

drivers/hid/hid-input.c

@@ -328,6 +328,9 @@ static const struct hid_device_id hid_battery_quirks[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_SYMBOL,
 		USB_DEVICE_ID_SYMBOL_SCANNER_3),
 	  HID_BATTERY_QUIRK_IGNORE },
+	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK,
+		USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD),
+	  HID_BATTERY_QUIRK_IGNORE },
 	{}
 };
 

drivers/hid/hid-kye.c

@@ -483,6 +483,80 @@ static __u8 pensketch_m912_rdesc_fixed[] = {
 	0xC0                          /*  End Collection                  */
 };
 
+/* Original EasyPen M406XE report descriptor size */
+#define EASYPEN_M406XE_RDESC_ORIG_SIZE	476
+
+/* Fixed EasyPen M406XE  report descriptor */
+static __u8 easypen_m406xe_rdesc_fixed[] = {
+	0x05, 0x01,         /*  Usage Page (Desktop),               */
+	0x09, 0x01,         /*  Usage (01h),                        */
+	0xA1, 0x01,         /*  Collection (Application),           */
+	0x85, 0x05,         /*      Report ID (5),                  */
+	0x09, 0x01,         /*      Usage (01h),                    */
+	0x15, 0x80,         /*      Logical Minimum (-128),         */
+	0x25, 0x7F,         /*      Logical Maximum (127),          */
+	0x75, 0x08,         /*      Report Size (8),                */
+	0x95, 0x07,         /*      Report Count (7),               */
+	0xB1, 0x02,         /*      Feature (Variable),             */
+	0xC0,               /*  End Collection,                     */
+	0x05, 0x0D,         /*  Usage Page (Digitizer),             */
+	0x09, 0x02,         /*  Usage (Pen),                        */
+	0xA1, 0x01,         /*  Collection (Application),           */
+	0x85, 0x10,         /*      Report ID (16),                 */
+	0x09, 0x20,         /*      Usage (Stylus),                 */
+	0xA0,               /*      Collection (Physical),          */
+	0x14,               /*          Logical Minimum (0),        */
+	0x25, 0x01,         /*          Logical Maximum (1),        */
+	0x75, 0x01,         /*          Report Size (1),            */
+	0x09, 0x42,         /*          Usage (Tip Switch),         */
+	0x09, 0x44,         /*          Usage (Barrel Switch),      */
+	0x09, 0x46,         /*          Usage (Tablet Pick),        */
+	0x95, 0x03,         /*          Report Count (3),           */
+	0x81, 0x02,         /*          Input (Variable),           */
+	0x95, 0x04,         /*          Report Count (4),           */
+	0x81, 0x03,         /*          Input (Constant, Variable), */
+	0x09, 0x32,         /*          Usage (In Range),           */
+	0x95, 0x01,         /*          Report Count (1),           */
+	0x81, 0x02,         /*          Input (Variable),           */
+	0x75, 0x10,         /*          Report Size (16),           */
+	0x95, 0x01,         /*          Report Count (1),           */
+	0xA4,               /*          Push,                       */
+	0x05, 0x01,         /*          Usage Page (Desktop),       */
+	0x55, 0xFD,         /*          Unit Exponent (-3),         */
+	0x65, 0x13,         /*          Unit (Inch),                */
+	0x34,               /*          Physical Minimum (0),       */
+	0x09, 0x30,         /*          Usage (X),                  */
+	0x46, 0x70, 0x17,   /*          Physical Maximum (6000),    */
+	0x26, 0x00, 0x3C,   /*          Logical Maximum (15360),    */
+	0x81, 0x02,         /*          Input (Variable),           */
+	0x09, 0x31,         /*          Usage (Y),                  */
+	0x46, 0xA0, 0x0F,   /*          Physical Maximum (4000),    */
+	0x26, 0x00, 0x28,   /*          Logical Maximum (10240),    */
+	0x81, 0x02,         /*          Input (Variable),           */
+	0xB4,               /*          Pop,                        */
+	0x09, 0x30,         /*          Usage (Tip Pressure),       */
+	0x26, 0xFF, 0x03,   /*          Logical Maximum (1023),     */
+	0x81, 0x02,         /*          Input (Variable),           */
+	0xC0,               /*      End Collection,                 */
+	0xC0,               /*  End Collection                      */
+	0x05, 0x0C,         /*  Usage Page (Consumer),              */
+	0x09, 0x01,         /*  Usage (Consumer Control),           */
+	0xA1, 0x01,         /*  Collection (Application),           */
+	0x85, 0x12,         /*      Report ID (18),                 */
+	0x14,               /*      Logical Minimum (0),            */
+	0x25, 0x01,         /*      Logical Maximum (1),            */
+	0x75, 0x01,         /*      Report Size (1),                */
+	0x95, 0x04,         /*      Report Count (4),               */
+	0x0A, 0x79, 0x02,   /*      Usage (AC Redo Or Repeat),      */
+	0x0A, 0x1A, 0x02,   /*      Usage (AC Undo),                */
+	0x0A, 0x2D, 0x02,   /*      Usage (AC Zoom In),             */
+	0x0A, 0x2E, 0x02,   /*      Usage (AC Zoom Out),            */
+	0x81, 0x02,         /*      Input (Variable),               */
+	0x95, 0x34,         /*      Report Count (52),              */
+	0x81, 0x03,         /*      Input (Constant, Variable),     */
+	0xC0                /*  End Collection                      */
+};
+
 static __u8 *kye_consumer_control_fixup(struct hid_device *hdev, __u8 *rdesc,
 		unsigned int *rsize, int offset, const char *device_name) {
 	/*
@@ -555,6 +629,12 @@ static __u8 *kye_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 			*rsize = sizeof(easypen_m610x_rdesc_fixed);
 		}
 		break;
+	case USB_DEVICE_ID_KYE_EASYPEN_M406XE:
+		if (*rsize == EASYPEN_M406XE_RDESC_ORIG_SIZE) {
+			rdesc = easypen_m406xe_rdesc_fixed;
+			*rsize = sizeof(easypen_m406xe_rdesc_fixed);
+		}
+		break;
 	case USB_DEVICE_ID_KYE_PENSKETCH_M912:
 		if (*rsize == PENSKETCH_M912_RDESC_ORIG_SIZE) {
 			rdesc = pensketch_m912_rdesc_fixed;
@@ -644,6 +724,7 @@ static int kye_probe(struct hid_device *hdev, const struct hid_device_id *id)
 	case USB_DEVICE_ID_KYE_MOUSEPEN_I608X:
 	case USB_DEVICE_ID_KYE_MOUSEPEN_I608X_V2:
 	case USB_DEVICE_ID_KYE_EASYPEN_M610X:
+	case USB_DEVICE_ID_KYE_EASYPEN_M406XE:
 	case USB_DEVICE_ID_KYE_PENSKETCH_M912:
 		ret = kye_tablet_enable(hdev);
 		if (ret) {
@@ -678,6 +759,8 @@ static const struct hid_device_id kye_devices[] = {
 				USB_DEVICE_ID_KYE_MOUSEPEN_I608X_V2) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE,
 				USB_DEVICE_ID_KYE_EASYPEN_M610X) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE,
+				USB_DEVICE_ID_KYE_EASYPEN_M406XE) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE,
 				USB_DEVICE_ID_GENIUS_GILA_GAMING_MOUSE) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE,

drivers/hid/hid-lg.c

@@ -50,6 +50,7 @@
 #define MOMO_RDESC_ORIG_SIZE	87
 #define MOMO2_RDESC_ORIG_SIZE	87
 #define FFG_RDESC_ORIG_SIZE	85
+#define FG_RDESC_ORIG_SIZE	82
 
 /* Fixed report descriptors for Logitech Driving Force (and Pro)
  * wheel controllers
@@ -381,6 +382,49 @@ static __u8 ffg_rdesc_fixed[] = {
 0xC0                /*  End Collection                      */
 };
 
+static __u8 fg_rdesc_fixed[] = {
+0x05, 0x01,         /*  Usage Page (Desktop),               */
+0x09, 0x04,         /*  Usage (Joystik),                    */
+0xA1, 0x01,         /*  Collection (Application),           */
+0xA1, 0x02,         /*      Collection (Logical),           */
+0x15, 0x00,         /*          Logical Minimum (0),        */
+0x26, 0xFF, 0x00,   /*          Logical Maximum (255),      */
+0x35, 0x00,         /*          Physical Minimum (0),       */
+0x46, 0xFF, 0x00,   /*          Physical Maximum (255),     */
+0x75, 0x08,         /*          Report Size (8),            */
+0x95, 0x01,         /*          Report Count (1),           */
+0x09, 0x30,         /*          Usage (X),                  */
+0x81, 0x02,         /*          Input (Variable),           */
+0xA4,               /*  Push,                               */
+0x25, 0x01,         /*          Logical Maximum (1),        */
+0x45, 0x01,         /*          Physical Maximum (1),       */
+0x75, 0x01,         /*          Report Size (1),            */
+0x95, 0x02,         /*          Report Count (2),           */
+0x81, 0x01,         /*          Input (Constant),           */
+0x95, 0x06,         /*          Report Count (6),           */
+0x05, 0x09,         /*          Usage Page (Button),        */
+0x19, 0x01,         /*          Usage Minimum (01h),        */
+0x29, 0x06,         /*          Usage Maximum (06h),        */
+0x81, 0x02,         /*          Input (Variable),           */
+0x05, 0x01,         /*          Usage Page (Desktop),       */
+0xB4,               /*  Pop,                                */
+0x81, 0x02,         /*          Input (Constant),           */
+0x09, 0x31,         /*          Usage (Y),                  */
+0x81, 0x02,         /*          Input (Variable),           */
+0x09, 0x32,         /*          Usage (Z),                  */
+0x81, 0x02,         /*          Input (Variable),           */
+0xC0,               /*      End Collection,                 */
+0xA1, 0x02,         /*      Collection (Logical),           */
+0x26, 0xFF, 0x00,   /*          Logical Maximum (255),      */
+0x46, 0xFF, 0x00,   /*          Physical Maximum (255),     */
+0x75, 0x08,         /*          Report Size (8),            */
+0x95, 0x04,         /*          Report Count (4),           */
+0x09, 0x02,         /*          Usage (02h),                */
+0xB1, 0x02,         /*          Feature (Variable),         */
+0xC0,               /*      End Collection,                 */
+0xC0                /*  End Collection,                     */
+};
+
 /*
  * Certain Logitech keyboards send in report #3 keys which are far
  * above the logical maximum described in descriptor. This extends
@@ -408,6 +452,19 @@ static __u8 *lg_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 
 	switch (hdev->product) {
 
+	case USB_DEVICE_ID_LOGITECH_WINGMAN_FG:
+		if (*rsize == FG_RDESC_ORIG_SIZE) {
+			hid_info(hdev,
+				"fixing up Logitech Wingman Formula GP report descriptor\n");
+			rdesc = fg_rdesc_fixed;
+			*rsize = sizeof(fg_rdesc_fixed);
+		} else {
+			hid_info(hdev,
+				"rdesc size test failed for formula gp\n");
+		}
+		break;
+
+
 	case USB_DEVICE_ID_LOGITECH_WINGMAN_FFG:
 		if (*rsize == FFG_RDESC_ORIG_SIZE) {
 			hid_info(hdev,
@@ -664,6 +721,7 @@ static int lg_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 			usage->code == ABS_RZ)) {
 		switch (hdev->product) {
 		case USB_DEVICE_ID_LOGITECH_G29_WHEEL:
+		case USB_DEVICE_ID_LOGITECH_WINGMAN_FG:
 		case USB_DEVICE_ID_LOGITECH_WINGMAN_FFG:
 		case USB_DEVICE_ID_LOGITECH_WHEEL:
 		case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL:
@@ -871,6 +929,8 @@ static const struct hid_device_id lg_devices[] = {
 		.driver_data = LG_NOGET | LG_FF4 },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WII_WHEEL),
 		.driver_data = LG_FF4 },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FG),
+		.driver_data = LG_NOGET },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG),
 		.driver_data = LG_NOGET | LG_FF4 },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2),

drivers/hid/hid-lg4ff.c

@@ -103,6 +103,10 @@ static const signed short lg4ff_wheel_effects[] = {
 	-1
 };
 
+static const signed short no_wheel_effects[] = {
+	-1
+};
+
 struct lg4ff_wheel {
 	const u32 product_id;
 	const signed short *ff_effects;
@@ -137,6 +141,7 @@ struct lg4ff_alternate_mode {
 };
 
 static const struct lg4ff_wheel lg4ff_devices[] = {
+	{USB_DEVICE_ID_LOGITECH_WINGMAN_FG,  no_wheel_effects,    40, 180, NULL},
 	{USB_DEVICE_ID_LOGITECH_WINGMAN_FFG, lg4ff_wheel_effects, 40, 180, NULL},
 	{USB_DEVICE_ID_LOGITECH_WHEEL,       lg4ff_wheel_effects, 40, 270, NULL},
 	{USB_DEVICE_ID_LOGITECH_MOMO_WHEEL,  lg4ff_wheel_effects, 40, 270, NULL},
@@ -346,6 +351,7 @@ int lg4ff_raw_event(struct hid_device *hdev, struct hid_report *report,
 			rd[5] = rd[3];
 			rd[6] = 0x7F;
 			return 1;
+		case USB_DEVICE_ID_LOGITECH_WINGMAN_FG:
 		case USB_DEVICE_ID_LOGITECH_WINGMAN_FFG:
 		case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL:
 		case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2:

drivers/hid/hid-maltron.c

+// SPDX-License-Identifier: GPL-2.0
+/*
+ * HID driver for Maltron L90
+ *
+ * Copyright (c) 1999 Andreas Gal
+ * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
+ * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
+ * Copyright (c) 2008 Jiri Slaby
+ * Copyright (c) 2012 David Dillow <dave@thedillows.org>
+ * Copyright (c) 2006-2013 Jiri Kosina
+ * Copyright (c) 2013 Colin Leitner <colin.leitner@gmail.com>
+ * Copyright (c) 2014-2016 Frank Praznik <frank.praznik@gmail.com>
+ * Copyright (c) 2010 Richard Nauber <Richard.Nauber@gmail.com>
+ * Copyright (c) 2016 Yuxuan Shui <yshuiv7@gmail.com>
+ * Copyright (c) 2018 William Whistler <wtbw@wtbw.co.uk>
+ */
+
+#include <linux/device.h>
+#include <linux/hid.h>
+#include <linux/module.h>
+
+#include "hid-ids.h"
+
+/* The original buggy USB descriptor */
+static u8 maltron_rdesc_o[] = {
+	0x05, 0x01,        /* Usage Page (Generic Desktop Ctrls) */
+	0x09, 0x80,        /* Usage (Sys Control)                */
+	0xA1, 0x01,        /* Collection (Application)           */
+	0x85, 0x02,        /*   Report ID (2)                    */
+	0x75, 0x01,        /*   Report Size (1)                  */
+	0x95, 0x01,        /*   Report Count (1)                 */
+	0x15, 0x00,        /*   Logical Minimum (0)              */
+	0x25, 0x01,        /*   Logical Maximum (1)              */
+	0x09, 0x82,        /*   Usage (Sys Sleep)                */
+	0x81, 0x06,        /*   Input (Data,Var,Rel)             */
+	0x09, 0x82,        /*   Usage (Sys Sleep)                */
+	0x81, 0x06,        /*   Input (Data,Var,Rel)             */
+	0x09, 0x83,        /*   Usage (Sys Wake Up)              */
+	0x81, 0x06,        /*   Input (Data,Var,Rel)             */
+	0x75, 0x05,        /*   Report Size (5)                  */
+	0x81, 0x01,        /*   Input (Const,Array,Abs)          */
+	0xC0,              /* End Collection                     */
+	0x05, 0x0C,        /* Usage Page (Consumer)              */
+	0x09, 0x01,        /* Usage (Consumer Control)           */
+	0xA1, 0x01,        /* Collection (Application)           */
+	0x85, 0x03,        /*   Report ID (3)                    */
+	0x95, 0x01,        /*   Report Count (1)                 */
+	0x75, 0x10,        /*   Report Size (16)                 */
+	0x19, 0x00,        /*   Usage Minimum (Unassigned)       */
+	0x2A, 0xFF, 0x7F,  /*   Usage Maximum (0x7FFF)           */
+	0x81, 0x00,        /*   Input (Data,Array,Abs)           */
+	0xC0,              /* End Collection                     */
+	0x06, 0x7F, 0xFF,  /* Usage Page (Vendor Defined 0xFF7F) */
+	0x09, 0x01,        /* Usage (0x01)                       */
+	0xA1, 0x01,        /* Collection (Application)           */
+	0x85, 0x04,        /*   Report ID (4)                    */
+	0x95, 0x01,        /*   Report Count (1)                 */
+	0x75, 0x10,        /*   Report Size (16)                 */
+	0x19, 0x00,        /*   Usage Minimum (0x00)             */
+	0x2A, 0xFF, 0x7F,  /*   Usage Maximum (0x7FFF)           */
+	0x81, 0x00,        /*   Input (Data,Array,Abs)           */
+	0x75, 0x02,        /*   Report Size (2)                  */
+	0x25, 0x02,        /*   Logical Maximum (2)              */
+	0x09, 0x90,        /*   Usage (0x90)                     */
+	0xB1, 0x02,        /*   Feature (Data,Var,Abs)           */
+	0x75, 0x06,        /*   Report Size (6)                  */
+	0xB1, 0x01,        /*   Feature (Const,Array,Abs)        */
+	0x75, 0x01,        /*   Report Size (1)                  */
+	0x25, 0x01,        /*   Logical Maximum (1)              */
+	0x05, 0x08,        /*   Usage Page (LEDs)                */
+	0x09, 0x2A,        /*   Usage (On-Line)                  */
+	0x91, 0x02,        /*   Output (Data,Var,Abs)            */
+	0x09, 0x4B,        /*   Usage (Generic Indicator)        */
+	0x91, 0x02,        /*   Output (Data,Var,Abs)            */
+	0x75, 0x06,        /*   Report Size (6)                  */
+	0x95, 0x01,        /*   Report Count (1)                 */
+	0x91, 0x01,        /*   Output (Const,Array,Abs)         */
+	0xC0               /* End Collection                     */
+};
+
+/* The patched descriptor, allowing media key events to be accepted as valid */
+static u8 maltron_rdesc[] = {
+	0x05, 0x01,        /* Usage Page (Generic Desktop Ctrls) */
+	0x09, 0x80,        /* Usage (Sys Control)                */
+	0xA1, 0x01,        /* Collection (Application)           */
+	0x85, 0x02,        /*   Report ID (2)                    */
+	0x75, 0x01,        /*   Report Size (1)                  */
+	0x95, 0x01,        /*   Report Count (1)                 */
+	0x15, 0x00,        /*   Logical Minimum (0)              */
+	0x25, 0x01,        /*   Logical Maximum (1)              */
+	0x09, 0x82,        /*   Usage (Sys Sleep)                */
+	0x81, 0x06,        /*   Input (Data,Var,Rel)             */
+	0x09, 0x82,        /*   Usage (Sys Sleep)                */
+	0x81, 0x06,        /*   Input (Data,Var,Rel)             */
+	0x09, 0x83,        /*   Usage (Sys Wake Up)              */
+	0x81, 0x06,        /*   Input (Data,Var,Rel)             */
+	0x75, 0x05,        /*   Report Size (5)                  */
+	0x81, 0x01,        /*   Input (Const,Array,Abs)          */
+	0xC0,              /* End Collection                     */
+	0x05, 0x0C,        /* Usage Page (Consumer)              */
+	0x09, 0x01,        /* Usage (Consumer Control)           */
+	0xA1, 0x01,        /* Collection (Application)           */
+	0x85, 0x03,        /*   Report ID (3)                    */
+	0x15, 0x00,        /*   Logical Minimum (0)              - changed */
+	0x26, 0xFF, 0x7F,  /*   Logical Maximum (32767)          - changed */
+	0x95, 0x01,        /*   Report Count (1)                 */
+	0x75, 0x10,        /*   Report Size (16)                 */
+	0x19, 0x00,        /*   Usage Minimum (Unassigned)       */
+	0x2A, 0xFF, 0x7F,  /*   Usage Maximum (0x7FFF)           */
+	0x81, 0x00,        /*   Input (Data,Array,Abs)           */
+	0xC0,              /* End Collection                     */
+	0x06, 0x7F, 0xFF,  /* Usage Page (Vendor Defined 0xFF7F) */
+	0x09, 0x01,        /* Usage (0x01)                       */
+	0xA1, 0x01,        /* Collection (Application)           */
+	0x85, 0x04,        /*   Report ID (4)                    */
+	0x95, 0x01,        /*   Report Count (1)                 */
+	0x75, 0x10,        /*   Report Size (16)                 */
+	0x19, 0x00,        /*   Usage Minimum (0x00)             */
+	0x2A, 0xFF, 0x7F,  /*   Usage Maximum (0x7FFF)           */
+	0x81, 0x00,        /*   Input (Data,Array,Abs)           */
+	0x75, 0x02,        /*   Report Size (2)                  */
+	0x25, 0x02,        /*   Logical Maximum (2)              */
+	0x09, 0x90,        /*   Usage (0x90)                     */
+	0xB1, 0x02,        /*   Feature (Data,Var,Abs)           */
+	0x75, 0x06,        /*   Report Size (6)                  */
+	0xB1, 0x01,        /*   Feature (Const,Array,Abs)        */
+	0x75, 0x01,        /*   Report Size (1)                  */
+	0x25, 0x01,        /*   Logical Maximum (1)              */
+	0x05, 0x08,        /*   Usage Page (LEDs)                */
+	0x09, 0x2A,        /*   Usage (On-Line)                  */
+	0x91, 0x02,        /*   Output (Data,Var,Abs)            */
+	0x09, 0x4B,        /*   Usage (Generic Indicator)        */
+	0x91, 0x02,        /*   Output (Data,Var,Abs)            */
+	0x75, 0x06,        /*   Report Size (6)                  */
+	0x95, 0x01,        /*   Report Count (1)                 */
+	0x91, 0x01,        /*   Output (Const,Array,Abs)         */
+	0xC0               /* End Collection                     */
+};
+
+static __u8 *maltron_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+				  unsigned int *rsize)
+{
+	if (*rsize == sizeof(maltron_rdesc_o) &&
+	    !memcmp(maltron_rdesc_o, rdesc, sizeof(maltron_rdesc_o))) {
+		hid_info(hdev, "Replacing Maltron L90 keyboard report descriptor\n");
+		*rsize = sizeof(maltron_rdesc);
+		return maltron_rdesc;
+	}
+	return rdesc;
+}
+
+static const struct hid_device_id maltron_devices[] = {
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_MALTRON_KB)},
+	{ }
+};
+MODULE_DEVICE_TABLE(hid, maltron_devices);
+
+static struct hid_driver maltron_driver = {
+	.name = "maltron",
+	.id_table = maltron_devices,
+	.report_fixup = maltron_report_fixup
+};
+module_hid_driver(maltron_driver);
+
+MODULE_LICENSE("GPL");

drivers/hid/hid-multitouch.c

@@ -1780,6 +1780,12 @@ static const struct hid_device_id mt_devices[] = {
 			   USB_VENDOR_ID_LENOVO,
 			   USB_DEVICE_ID_LENOVO_X1_TAB) },
 
+	/* Lenovo X1 TAB Gen 3 */
+	{ .driver_data = MT_CLS_WIN_8_DUAL,
+		HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
+			   USB_VENDOR_ID_LENOVO,
+			   USB_DEVICE_ID_LENOVO_X1_TAB3) },
+
 	/* Anton devices */
 	{ .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
 		MT_USB_DEVICE(USB_VENDOR_ID_ANTON,

drivers/hid/hid-quirks.c

@@ -99,6 +99,7 @@ static const struct hid_device_id hid_quirks[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X), HID_QUIRK_MULTI_INPUT },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X_V2), HID_QUIRK_MULTI_INPUT },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_PENSKETCH_M912), HID_QUIRK_MULTI_INPUT },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M406XE), HID_QUIRK_MULTI_INPUT },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_PIXART_USB_OPTICAL_MOUSE_ID2), HID_QUIRK_ALWAYS_POLL },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_C007), HID_QUIRK_ALWAYS_POLL },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_C077), HID_QUIRK_ALWAYS_POLL },
@@ -411,11 +412,6 @@ static const struct hid_device_id hid_have_special_driver[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_MANTICORE) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GX_IMPERATOR) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_I405X) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X_V2) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_PENSKETCH_M912) },
 #endif
 #if IS_ENABLED(CONFIG_HID_LCPOWER)
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000) },
@@ -451,6 +447,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G29_WHEEL) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FG) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
@@ -673,35 +670,9 @@ static const struct hid_device_id hid_have_special_driver[] = {
 #if IS_ENABLED(CONFIG_HID_TWINHAN)
 	{ HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
 #endif
-#if IS_ENABLED(CONFIG_HID_UCLOGIC)
-	{ HID_USB_DEVICE(USB_VENDOR_ID_HUION, USB_DEVICE_ID_HUION_TABLET) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_HUION_TABLET) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_YIYNOVA_TABLET) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UGEE_TABLET_81) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UGEE_TABLET_45) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_DRAWIMAGE_G3) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_TABLET_EX07S) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_UGTIZER, USB_DEVICE_ID_UGTIZER_TABLET_GP0610) },
-#endif
 #if IS_ENABLED(CONFIG_HID_UDRAW_PS3)
 	{ HID_USB_DEVICE(USB_VENDOR_ID_THQ, USB_DEVICE_ID_THQ_PS3_UDRAW) },
 #endif
-#if IS_ENABLED(CONFIG_HID_WALTOP)
-	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_Q_PAD) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_PID_0038) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET) },
-#endif
 #if IS_ENABLED(CONFIG_HID_XINMO)
 	{ HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_XIN_MO_DUAL_ARCADE) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_THT_2P_ARCADE) },

drivers/hid/hid-roccat-kone.c

@@ -783,6 +783,7 @@ static void kone_keep_values_up_to_date(struct kone_device *kone,
 	case kone_mouse_event_switch_profile:
 		kone->actual_dpi = kone->profiles[event->value - 1].
 				startup_dpi;
+		/* fall through */
 	case kone_mouse_event_osd_profile:
 		kone->actual_profile = event->value;
 		break;

drivers/hid/hid-sony.c

@@ -58,6 +58,7 @@
 #define FUTUREMAX_DANCE_MAT       BIT(13)
 #define NSG_MR5U_REMOTE_BT        BIT(14)
 #define NSG_MR7U_REMOTE_BT        BIT(15)
+#define SHANWAN_GAMEPAD           BIT(16)
 
 #define SIXAXIS_CONTROLLER (SIXAXIS_CONTROLLER_USB | SIXAXIS_CONTROLLER_BT)
 #define MOTION_CONTROLLER (MOTION_CONTROLLER_USB | MOTION_CONTROLLER_BT)
@@ -1490,6 +1491,7 @@ static int sony_register_sensors(struct sony_sc *sc)
  */
 static int sixaxis_set_operational_usb(struct hid_device *hdev)
 {
+	struct sony_sc *sc = hid_get_drvdata(hdev);
 	const int buf_size =
 		max(SIXAXIS_REPORT_0xF2_SIZE, SIXAXIS_REPORT_0xF5_SIZE);
 	u8 *buf;
@@ -1519,14 +1521,15 @@ static int sixaxis_set_operational_usb(struct hid_device *hdev)
 
 	/*
 	 * But the USB interrupt would cause SHANWAN controllers to
-	 * start rumbling non-stop.
+	 * start rumbling non-stop, so skip step 3 for these controllers.
 	 */
-	if (strcmp(hdev->name, "SHANWAN PS3 GamePad")) {
-		ret = hid_hw_output_report(hdev, buf, 1);
-		if (ret < 0) {
-			hid_info(hdev, "can't set operational mode: step 3, ignoring\n");
-			ret = 0;
-		}
+	if (sc->quirks & SHANWAN_GAMEPAD)
+		goto out;
+
+	ret = hid_hw_output_report(hdev, buf, 1);
+	if (ret < 0) {
+		hid_info(hdev, "can't set operational mode: step 3, ignoring\n");
+		ret = 0;
 	}
 
 out:
@@ -2097,9 +2100,14 @@ static void sixaxis_send_output_report(struct sony_sc *sc)
 		}
 	}
 
-	hid_hw_raw_request(sc->hdev, report->report_id, (u8 *)report,
-			sizeof(struct sixaxis_output_report),
-			HID_OUTPUT_REPORT, HID_REQ_SET_REPORT);
+	/* SHANWAN controllers require output reports via intr channel */
+	if (sc->quirks & SHANWAN_GAMEPAD)
+		hid_hw_output_report(sc->hdev, (u8 *)report,
+				sizeof(struct sixaxis_output_report));
+	else
+		hid_hw_raw_request(sc->hdev, report->report_id, (u8 *)report,
+				sizeof(struct sixaxis_output_report),
+				HID_OUTPUT_REPORT, HID_REQ_SET_REPORT);
 }
 
 static void dualshock4_send_output_report(struct sony_sc *sc)
@@ -2811,6 +2819,9 @@ static int sony_probe(struct hid_device *hdev, const struct hid_device_id *id)
 	if (!strcmp(hdev->name, "FutureMax Dance Mat"))
 		quirks |= FUTUREMAX_DANCE_MAT;
 
+	if (!strcmp(hdev->name, "SHANWAN PS3 GamePad"))
+		quirks |= SHANWAN_GAMEPAD;
+
 	sc = devm_kzalloc(&hdev->dev, sizeof(*sc), GFP_KERNEL);
 	if (sc == NULL) {
 		hid_err(hdev, "can't alloc sony descriptor\n");

drivers/hid/hid-steam.c

@@ -283,11 +283,6 @@ static void steam_set_lizard_mode(struct steam_device *steam, bool enable)
 static int steam_input_open(struct input_dev *dev)
 {
 	struct steam_device *steam = input_get_drvdata(dev);
-	int ret;
-
-	ret = hid_hw_open(steam->hdev);
-	if (ret)
-		return ret;
 
 	mutex_lock(&steam->mutex);
 	if (!steam->client_opened && lizard_mode)
@@ -304,8 +299,6 @@ static void steam_input_close(struct input_dev *dev)
 	if (!steam->client_opened && lizard_mode)
 		steam_set_lizard_mode(steam, true);
 	mutex_unlock(&steam->mutex);
-
-	hid_hw_close(steam->hdev);
 }
 
 static enum power_supply_property steam_battery_props[] = {
@@ -623,11 +616,6 @@ static void steam_client_ll_stop(struct hid_device *hdev)
 static int steam_client_ll_open(struct hid_device *hdev)
 {
 	struct steam_device *steam = hdev->driver_data;
-	int ret;
-
-	ret = hid_hw_open(steam->hdev);
-	if (ret)
-		return ret;
 
 	mutex_lock(&steam->mutex);
 	steam->client_opened = true;
@@ -635,7 +623,7 @@ static int steam_client_ll_open(struct hid_device *hdev)
 
 	steam_input_unregister(steam);
 
-	return ret;
+	return 0;
 }
 
 static void steam_client_ll_close(struct hid_device *hdev)
@@ -646,7 +634,6 @@ static void steam_client_ll_close(struct hid_device *hdev)
 	steam->client_opened = false;
 	mutex_unlock(&steam->mutex);
 
-	hid_hw_close(steam->hdev);
 	if (steam->connected) {
 		steam_set_lizard_mode(steam, lizard_mode);
 		steam_input_register(steam);
@@ -759,14 +746,15 @@ static int steam_probe(struct hid_device *hdev,
 	if (ret)
 		goto client_hdev_add_fail;
 
+	ret = hid_hw_open(hdev);
+	if (ret) {
+		hid_err(hdev,
+			"%s:hid_hw_open\n",
+			__func__);
+		goto hid_hw_open_fail;
+	}
+
 	if (steam->quirks & STEAM_QUIRK_WIRELESS) {
-		ret = hid_hw_open(hdev);
-		if (ret) {
-			hid_err(hdev,
-				"%s:hid_hw_open for wireless\n",
-				__func__);
-			goto hid_hw_open_fail;
-		}
 		hid_info(hdev, "Steam wireless receiver connected");
 		steam_request_conn_status(steam);
 	} else {
@@ -781,8 +769,8 @@ static int steam_probe(struct hid_device *hdev,
 
 	return 0;
 
-hid_hw_open_fail:
 input_register_fail:
+hid_hw_open_fail:
 client_hdev_add_fail:
 	hid_hw_stop(hdev);
 hid_hw_start_fail:
@@ -809,8 +797,8 @@ static void steam_remove(struct hid_device *hdev)
 	cancel_work_sync(&steam->work_connect);
 	if (steam->quirks & STEAM_QUIRK_WIRELESS) {
 		hid_info(hdev, "Steam wireless receiver disconnected");
-		hid_hw_close(hdev);
 	}
+	hid_hw_close(hdev);
 	hid_hw_stop(hdev);
 	steam_unregister(steam);
 }

drivers/hid/hid-topseed.c

@@ -34,7 +34,9 @@ static int ts_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 		return 0;
 
 	switch (usage->hid & HID_USAGE) {
+	case 0x00c: ts_map_key_clear(KEY_WLAN);		break;
 	case 0x00d: ts_map_key_clear(KEY_MEDIA);	break;
+	case 0x010: ts_map_key_clear(KEY_ZOOM);		break;
 	case 0x024: ts_map_key_clear(KEY_MENU);		break;
 	case 0x025: ts_map_key_clear(KEY_TV);		break;
 	case 0x027: ts_map_key_clear(KEY_MODE);		break;
@@ -67,6 +69,7 @@ static const struct hid_device_id ts_devices[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
+	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TOSHIBA_WT10A) },
 	{ }
 };
 MODULE_DEVICE_TABLE(hid, ts_devices);

drivers/hid/hid-uclogic-params.h

+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ *  HID driver for UC-Logic devices not fully compliant with HID standard
+ *  - tablet initialization and parameter retrieval
+ *
+ *  Copyright (c) 2018 Nikolai Kondrashov
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+#ifndef _HID_UCLOGIC_PARAMS_H
+#define _HID_UCLOGIC_PARAMS_H
+
+#include <linux/usb.h>
+#include <linux/hid.h>
+
+/* Types of pen in-range reporting */
+enum uclogic_params_pen_inrange {
+	/* Normal reports: zero - out of proximity, one - in proximity */
+	UCLOGIC_PARAMS_PEN_INRANGE_NORMAL = 0,
+	/* Inverted reports: zero - in proximity, one - out of proximity */
+	UCLOGIC_PARAMS_PEN_INRANGE_INVERTED,
+	/* No reports */
+	UCLOGIC_PARAMS_PEN_INRANGE_NONE,
+};
+
+/* Convert a pen in-range reporting type to a string */
+extern const char *uclogic_params_pen_inrange_to_str(
+			enum uclogic_params_pen_inrange inrange);
+
+/*
+ * Tablet interface's pen input parameters.
+ *
+ * Must use declarative (descriptive) language, not imperative, to simplify
+ * understanding and maintain consistency.
+ *
+ * Noop (preserving functionality) when filled with zeroes.
+ */
+struct uclogic_params_pen {
+	/*
+	 * Pointer to report descriptor describing the inputs.
+	 * Allocated with kmalloc.
+	 */
+	__u8 *desc_ptr;
+	/*
+	 * Size of the report descriptor.
+	 * Only valid, if "desc_ptr" is not NULL.
+	 */
+	unsigned int desc_size;
+	/* Report ID, if reports should be tweaked, zero if not */
+	unsigned int id;
+	/* Type of in-range reporting, only valid if "id" is not zero */
+	enum uclogic_params_pen_inrange inrange;
+	/*
+	 * True, if reports include fragmented high resolution coords, with
+	 * high-order X and then Y bytes following the pressure field.
+	 * Only valid if "id" is not zero.
+	 */
+	bool fragmented_hires;
+};
+
+/*
+ * Parameters of frame control inputs of a tablet interface.
+ *
+ * Must use declarative (descriptive) language, not imperative, to simplify
+ * understanding and maintain consistency.
+ *
+ * Noop (preserving functionality) when filled with zeroes.
+ */
+struct uclogic_params_frame {
+	/*
+	 * Pointer to report descriptor describing the inputs.
+	 * Allocated with kmalloc.
+	 */
+	__u8 *desc_ptr;
+	/*
+	 * Size of the report descriptor.
+	 * Only valid, if "desc_ptr" is not NULL.
+	 */
+	unsigned int desc_size;
+	/*
+	 * Report ID, if reports should be tweaked, zero if not.
+	 */
+	unsigned int id;
+	/*
+	 * Number of the least-significant bit of the 2-bit state of a rotary
+	 * encoder, in the report. Cannot point to a 2-bit field crossing a
+	 * byte boundary. Zero if not present. Only valid if "id" is not zero.
+	 */
+	unsigned int re_lsb;
+	/*
+	 * Offset of the Wacom-style device ID byte in the report, to be set
+	 * to pad device ID (0xf), for compatibility with Wacom drivers. Zero
+	 * if no changes to the report should be made. Only valid if "id" is
+	 * not zero.
+	 */
+	unsigned int dev_id_byte;
+};
+
+/*
+ * Tablet interface report parameters.
+ *
+ * Must use declarative (descriptive) language, not imperative, to simplify
+ * understanding and maintain consistency.
+ *
+ * When filled with zeros represents a "noop" configuration - passes all
+ * reports unchanged and lets the generic HID driver handle everything.
+ *
+ * The resulting device report descriptor is assembled from all the report
+ * descriptor parts referenced by the structure. No order of assembly should
+ * be assumed. The structure represents original device report descriptor if
+ * all the parts are NULL.
+ */
+struct uclogic_params {
+	/*
+	 * True if the whole interface is invalid, false otherwise.
+	 */
+	bool invalid;
+	/*
+	 * Pointer to the common part of the replacement report descriptor,
+	 * allocated with kmalloc. NULL if no common part is needed.
+	 * Only valid, if "invalid" is false.
+	 */
+	__u8 *desc_ptr;
+	/*
+	 * Size of the common part of the replacement report descriptor.
+	 * Only valid, if "desc_ptr" is not NULL.
+	 */
+	unsigned int desc_size;
+	/*
+	 * True, if pen usage in report descriptor is invalid, when present.
+	 * Only valid, if "invalid" is false.
+	 */
+	bool pen_unused;
+	/*
+	 * Pen parameters and optional report descriptor part.
+	 * Only valid if "pen_unused" is valid and false.
+	 */
+	struct uclogic_params_pen pen;
+	/*
+	 * Frame control parameters and optional report descriptor part.
+	 * Only valid, if "invalid" is false.
+	 */
+	struct uclogic_params_frame frame;
+	/*
+	 * Bitmask matching frame controls "sub-report" flag in the second
+	 * byte of the pen report, or zero if it's not expected.
+	 * Only valid if both "pen" and "frame" are valid, and "frame.id" is
+	 * not zero.
+	 */
+	__u8 pen_frame_flag;
+};
+
+/* Initialize a tablet interface and discover its parameters */
+extern int uclogic_params_init(struct uclogic_params *params,
+				struct hid_device *hdev);
+
+/* Tablet interface parameters *printf format string */
+#define UCLOGIC_PARAMS_FMT_STR \
+		".invalid = %s\n"                   \
+		".desc_ptr = %p\n"                  \
+		".desc_size = %u\n"                 \
+		".pen_unused = %s\n"                \
+		".pen.desc_ptr = %p\n"              \
+		".pen.desc_size = %u\n"             \
+		".pen.id = %u\n"                    \
+		".pen.inrange = %s\n"               \
+		".pen.fragmented_hires = %s\n"      \
+		".frame.desc_ptr = %p\n"            \
+		".frame.desc_size = %u\n"           \
+		".frame.id = %u\n"                  \
+		".frame.re_lsb = %u\n"              \
+		".frame.dev_id_byte = %u\n"         \
+		".pen_frame_flag = 0x%02x\n"
+
+/* Tablet interface parameters *printf format arguments */
+#define UCLOGIC_PARAMS_FMT_ARGS(_params) \
+		((_params)->invalid ? "true" : "false"),                    \
+		(_params)->desc_ptr,                                        \
+		(_params)->desc_size,                                       \
+		((_params)->pen_unused ? "true" : "false"),                 \
+		(_params)->pen.desc_ptr,                                    \
+		(_params)->pen.desc_size,                                   \
+		(_params)->pen.id,                                          \
+		uclogic_params_pen_inrange_to_str((_params)->pen.inrange),  \
+		((_params)->pen.fragmented_hires ? "true" : "false"),       \
+		(_params)->frame.desc_ptr,                                  \
+		(_params)->frame.desc_size,                                 \
+		(_params)->frame.id,                                        \
+		(_params)->frame.re_lsb,                                    \
+		(_params)->frame.dev_id_byte,                               \
+		(_params)->pen_frame_flag
+
+/* Get a replacement report descriptor for a tablet's interface. */
+extern int uclogic_params_get_desc(const struct uclogic_params *params,
+					__u8 **pdesc,
+					unsigned int *psize);
+
+/* Free resources used by tablet interface's parameters */
+extern void uclogic_params_cleanup(struct uclogic_params *params);
+
+#endif /* _HID_UCLOGIC_PARAMS_H */

drivers/hid/hid-uclogic-rdesc.h

+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ *  HID driver for UC-Logic devices not fully compliant with HID standard
+ *  - original and fixed report descriptors
+ *
+ *  Copyright (c) 2010-2018 Nikolai Kondrashov
+ *  Copyright (c) 2013 Martin Rusko
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+#ifndef _HID_UCLOGIC_RDESC_H
+#define _HID_UCLOGIC_RDESC_H
+
+#include <linux/usb.h>
+
+/* Size of the original descriptor of WPXXXXU tablets */
+#define UCLOGIC_RDESC_WPXXXXU_ORIG_SIZE		212
+
+/* Fixed WP4030U report descriptor */
+extern __u8 uclogic_rdesc_wp4030u_fixed_arr[];
+extern const size_t uclogic_rdesc_wp4030u_fixed_size;
+
+/* Fixed WP5540U report descriptor */
+extern __u8 uclogic_rdesc_wp5540u_fixed_arr[];
+extern const size_t uclogic_rdesc_wp5540u_fixed_size;
+
+/* Fixed WP8060U report descriptor */
+extern __u8 uclogic_rdesc_wp8060u_fixed_arr[];
+extern const size_t uclogic_rdesc_wp8060u_fixed_size;
+
+/* Size of the original descriptor of the new WP5540U tablet */
+#define UCLOGIC_RDESC_WP5540U_V2_ORIG_SIZE	232
+
+/* Size of the original descriptor of WP1062 tablet */
+#define UCLOGIC_RDESC_WP1062_ORIG_SIZE		254
+
+/* Fixed WP1062 report descriptor */
+extern __u8 uclogic_rdesc_wp1062_fixed_arr[];
+extern const size_t uclogic_rdesc_wp1062_fixed_size;
+
+/* Size of the original descriptor of PF1209 tablet */
+#define UCLOGIC_RDESC_PF1209_ORIG_SIZE		234
+
+/* Fixed PF1209 report descriptor */
+extern __u8 uclogic_rdesc_pf1209_fixed_arr[];
+extern const size_t uclogic_rdesc_pf1209_fixed_size;
+
+/* Size of the original descriptors of TWHL850 tablet */
+#define UCLOGIC_RDESC_TWHL850_ORIG0_SIZE	182
+#define UCLOGIC_RDESC_TWHL850_ORIG1_SIZE	161
+#define UCLOGIC_RDESC_TWHL850_ORIG2_SIZE	92
+
+/* Fixed PID 0522 tablet report descriptor, interface 0 (stylus) */
+extern __u8 uclogic_rdesc_twhl850_fixed0_arr[];
+extern const size_t uclogic_rdesc_twhl850_fixed0_size;
+
+/* Fixed PID 0522 tablet report descriptor, interface 1 (mouse) */
+extern __u8 uclogic_rdesc_twhl850_fixed1_arr[];
+extern const size_t uclogic_rdesc_twhl850_fixed1_size;
+
+/* Fixed PID 0522 tablet report descriptor, interface 2 (frame buttons) */
+extern __u8 uclogic_rdesc_twhl850_fixed2_arr[];
+extern const size_t uclogic_rdesc_twhl850_fixed2_size;
+
+/* Size of the original descriptors of TWHA60 tablet */
+#define UCLOGIC_RDESC_TWHA60_ORIG0_SIZE		254
+#define UCLOGIC_RDESC_TWHA60_ORIG1_SIZE		139
+
+/* Fixed TWHA60 report descriptor, interface 0 (stylus) */
+extern __u8 uclogic_rdesc_twha60_fixed0_arr[];
+extern const size_t uclogic_rdesc_twha60_fixed0_size;
+
+/* Fixed TWHA60 report descriptor, interface 1 (frame buttons) */
+extern __u8 uclogic_rdesc_twha60_fixed1_arr[];
+extern const size_t uclogic_rdesc_twha60_fixed1_size;
+
+/* Report descriptor template placeholder head */
+#define UCLOGIC_RDESC_PH_HEAD	0xFE, 0xED, 0x1D
+
+/* Apply report descriptor parameters to a report descriptor template */
+extern __u8 *uclogic_rdesc_template_apply(const __u8 *template_ptr,
+					  size_t template_size,
+					  const s32 *param_list,
+					  size_t param_num);
+
+/* Pen report descriptor template placeholder IDs */
+enum uclogic_rdesc_pen_ph_id {
+	UCLOGIC_RDESC_PEN_PH_ID_X_LM,
+	UCLOGIC_RDESC_PEN_PH_ID_X_PM,
+	UCLOGIC_RDESC_PEN_PH_ID_Y_LM,
+	UCLOGIC_RDESC_PEN_PH_ID_Y_PM,
+	UCLOGIC_RDESC_PEN_PH_ID_PRESSURE_LM,
+	UCLOGIC_RDESC_PEN_PH_ID_NUM
+};
+
+/* Report descriptor pen template placeholder */
+#define UCLOGIC_RDESC_PEN_PH(_ID) \
+	UCLOGIC_RDESC_PH_HEAD, UCLOGIC_RDESC_PEN_PH_ID_##_ID
+
+/* Report ID for v1 pen reports */
+#define UCLOGIC_RDESC_PEN_V1_ID	0x07
+
+/* Fixed report descriptor template for (tweaked) v1 pen reports */
+extern const __u8 uclogic_rdesc_pen_v1_template_arr[];
+extern const size_t uclogic_rdesc_pen_v1_template_size;
+
+/* Report ID for v2 pen reports */
+#define UCLOGIC_RDESC_PEN_V2_ID	0x08
+
+/* Fixed report descriptor template for (tweaked) v2 pen reports */
+extern const __u8 uclogic_rdesc_pen_v2_template_arr[];
+extern const size_t uclogic_rdesc_pen_v2_template_size;
+
+/* Fixed report descriptor for (tweaked) v1 buttonpad reports */
+extern const __u8 uclogic_rdesc_buttonpad_v1_arr[];
+extern const size_t uclogic_rdesc_buttonpad_v1_size;
+
+/* Report ID for tweaked v1 buttonpad reports */
+#define UCLOGIC_RDESC_BUTTONPAD_V1_ID 0xf7
+
+/* Fixed report descriptor for (tweaked) v2 buttonpad reports */
+extern const __u8 uclogic_rdesc_buttonpad_v2_arr[];
+extern const size_t uclogic_rdesc_buttonpad_v2_size;
+
+/* Report ID for tweaked v2 buttonpad reports */
+#define UCLOGIC_RDESC_BUTTONPAD_V2_ID 0xf7
+
+/* Fixed report descriptor for Ugee EX07 buttonpad */
+extern const __u8 uclogic_rdesc_ugee_ex07_buttonpad_arr[];
+extern const size_t uclogic_rdesc_ugee_ex07_buttonpad_size;
+
+/* Fixed report descriptor for XP-Pen Deco 01 frame controls */
+extern const __u8 uclogic_rdesc_xppen_deco01_frame_arr[];
+extern const size_t uclogic_rdesc_xppen_deco01_frame_size;
+
+/* Fixed report descriptor for Ugee G5 frame controls */
+extern const __u8 uclogic_rdesc_ugee_g5_frame_arr[];
+extern const size_t uclogic_rdesc_ugee_g5_frame_size;
+
+/* Report ID of Ugee G5 frame control reports */
+#define UCLOGIC_RDESC_UGEE_G5_FRAME_ID 0x06
+
+/* Device ID byte offset in Ugee G5 frame report */
+#define UCLOGIC_RDESC_UGEE_G5_FRAME_DEV_ID_BYTE	0x2
+
+/* Least-significant bit of Ugee G5 frame rotary encoder state */
+#define UCLOGIC_RDESC_UGEE_G5_FRAME_RE_LSB 38
+
+#endif /* _HID_UCLOGIC_RDESC_H */

drivers/hid/hid-viewsonic.c

+// SPDX-License-Identifier: GPL-2.0+
+/*
+ *  HID driver for ViewSonic devices not fully compliant with HID standard
+ *
+ *  Copyright (c) 2017 Nikolai Kondrashov
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+#include <linux/device.h>
+#include <linux/hid.h>
+#include <linux/module.h>
+
+#include "hid-ids.h"
+
+/* Size of the original descriptor of PD1011 signature pad */
+#define PD1011_RDESC_ORIG_SIZE	408
+
+/* Fixed report descriptor of PD1011 signature pad */
+static __u8 pd1011_rdesc_fixed[] = {
+	0x05, 0x0D,             /*  Usage Page (Digitizer),             */
+	0x09, 0x02,             /*  Usage (Pen),                        */
+	0xA1, 0x01,             /*  Collection (Application),           */
+	0x85, 0x02,             /*      Report ID (2),                  */
+	0x09, 0x20,             /*      Usage (Stylus),                 */
+	0xA0,                   /*      Collection (Physical),          */
+	0x75, 0x10,             /*          Report Size (16),           */
+	0x95, 0x01,             /*          Report Count (1),           */
+	0xA4,                   /*          Push,                       */
+	0x05, 0x01,             /*          Usage Page (Desktop),       */
+	0x65, 0x13,             /*          Unit (Inch),                */
+	0x55, 0xFD,             /*          Unit Exponent (-3),         */
+	0x34,                   /*          Physical Minimum (0),       */
+	0x09, 0x30,             /*          Usage (X),                  */
+	0x46, 0x5D, 0x21,       /*          Physical Maximum (8541),    */
+	0x27, 0x80, 0xA9,
+		0x00, 0x00,     /*          Logical Maximum (43392),    */
+	0x81, 0x02,             /*          Input (Variable),           */
+	0x09, 0x31,             /*          Usage (Y),                  */
+	0x46, 0xDA, 0x14,       /*          Physical Maximum (5338),    */
+	0x26, 0xF0, 0x69,       /*          Logical Maximum (27120),    */
+	0x81, 0x02,             /*          Input (Variable),           */
+	0xB4,                   /*          Pop,                        */
+	0x14,                   /*          Logical Minimum (0),        */
+	0x25, 0x01,             /*          Logical Maximum (1),        */
+	0x75, 0x01,             /*          Report Size (1),            */
+	0x95, 0x01,             /*          Report Count (1),           */
+	0x81, 0x03,             /*          Input (Constant, Variable), */
+	0x09, 0x32,             /*          Usage (In Range),           */
+	0x09, 0x42,             /*          Usage (Tip Switch),         */
+	0x95, 0x02,             /*          Report Count (2),           */
+	0x81, 0x02,             /*          Input (Variable),           */
+	0x95, 0x05,             /*          Report Count (5),           */
+	0x81, 0x03,             /*          Input (Constant, Variable), */
+	0x75, 0x10,             /*          Report Size (16),           */
+	0x95, 0x01,             /*          Report Count (1),           */
+	0x09, 0x30,             /*          Usage (Tip Pressure),       */
+	0x15, 0x05,             /*          Logical Minimum (5),        */
+	0x26, 0xFF, 0x07,       /*          Logical Maximum (2047),     */
+	0x81, 0x02,             /*          Input (Variable),           */
+	0x75, 0x10,             /*          Report Size (16),           */
+	0x95, 0x01,             /*          Report Count (1),           */
+	0x81, 0x03,             /*          Input (Constant, Variable), */
+	0xC0,                   /*      End Collection,                 */
+	0xC0                    /*  End Collection                      */
+};
+
+static __u8 *viewsonic_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+				    unsigned int *rsize)
+{
+	switch (hdev->product) {
+	case USB_DEVICE_ID_VIEWSONIC_PD1011:
+	case USB_DEVICE_ID_SIGNOTEC_VIEWSONIC_PD1011:
+		if (*rsize == PD1011_RDESC_ORIG_SIZE) {
+			rdesc = pd1011_rdesc_fixed;
+			*rsize = sizeof(pd1011_rdesc_fixed);
+		}
+		break;
+	}
+
+	return rdesc;
+}
+
+static const struct hid_device_id viewsonic_devices[] = {
+	{ HID_USB_DEVICE(USB_VENDOR_ID_VIEWSONIC,
+				USB_DEVICE_ID_VIEWSONIC_PD1011) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_SIGNOTEC,
+				USB_DEVICE_ID_SIGNOTEC_VIEWSONIC_PD1011) },
+	{ }
+};
+MODULE_DEVICE_TABLE(hid, viewsonic_devices);
+
+static struct hid_driver viewsonic_driver = {
+	.name = "viewsonic",
+	.id_table = viewsonic_devices,
+	.report_fixup = viewsonic_report_fixup,
+};
+module_hid_driver(viewsonic_driver);
+
+MODULE_LICENSE("GPL");

drivers/hid/i2c-hid/i2c-hid-core.c

@@ -50,6 +50,7 @@
 #define I2C_HID_QUIRK_NO_IRQ_AFTER_RESET	BIT(1)
 #define I2C_HID_QUIRK_NO_RUNTIME_PM		BIT(2)
 #define I2C_HID_QUIRK_DELAY_AFTER_SLEEP		BIT(3)
+#define I2C_HID_QUIRK_BOGUS_IRQ			BIT(4)
 
 /* flags */
 #define I2C_HID_STARTED		0
@@ -181,6 +182,8 @@ static const struct i2c_hid_quirks {
 		I2C_HID_QUIRK_NO_RUNTIME_PM },
 	{ I2C_VENDOR_ID_GOODIX, I2C_DEVICE_ID_GOODIX_01F0,
 		I2C_HID_QUIRK_NO_RUNTIME_PM },
+	{ USB_VENDOR_ID_ELAN, HID_ANY_ID,
+		 I2C_HID_QUIRK_BOGUS_IRQ },
 	{ 0, 0 }
 };
 
@@ -505,6 +508,12 @@ static void i2c_hid_get_input(struct i2c_hid *ihid)
 		return;
 	}
 
+	if (ihid->quirks & I2C_HID_QUIRK_BOGUS_IRQ && ret_size == 0xffff) {
+		dev_warn_once(&ihid->client->dev, "%s: IRQ triggered but "
+			      "there's no data\n", __func__);
+		return;
+	}
+
 	if ((ret_size > size) || (ret_size < 2)) {
 		dev_err(&ihid->client->dev, "%s: incomplete report (%d/%d)\n",
 			__func__, size, ret_size);

drivers/hid/intel-ish-hid/ipc/ipc.c

@@ -91,7 +91,10 @@ static bool check_generated_interrupt(struct ishtp_device *dev)
 			IPC_INT_FROM_ISH_TO_HOST_CHV_AB(pisr_val);
 	} else {
 		pisr_val = ish_reg_read(dev, IPC_REG_PISR_BXT);
-		interrupt_generated = IPC_INT_FROM_ISH_TO_HOST_BXT(pisr_val);
+		interrupt_generated = !!pisr_val;
+		/* only busy-clear bit is RW, others are RO */
+		if (pisr_val)
+			ish_reg_write(dev, IPC_REG_PISR_BXT, pisr_val);
 	}
 
 	return interrupt_generated;
@@ -256,33 +259,22 @@ static int write_ipc_from_queue(struct ishtp_device *dev)
 	int	i;
 	void	(*ipc_send_compl)(void *);
 	void	*ipc_send_compl_prm;
-	static int	out_ipc_locked;
-	unsigned long	out_ipc_flags;
 
 	if (dev->dev_state == ISHTP_DEV_DISABLED)
-		return	-EINVAL;
+		return -EINVAL;
 
-	spin_lock_irqsave(&dev->out_ipc_spinlock, out_ipc_flags);
-	if (out_ipc_locked) {
-		spin_unlock_irqrestore(&dev->out_ipc_spinlock, out_ipc_flags);
-		return -EBUSY;
-	}
-	out_ipc_locked = 1;
+	spin_lock_irqsave(&dev->wr_processing_spinlock, flags);
 	if (!ish_is_input_ready(dev)) {
-		out_ipc_locked = 0;
-		spin_unlock_irqrestore(&dev->out_ipc_spinlock, out_ipc_flags);
+		spin_unlock_irqrestore(&dev->wr_processing_spinlock, flags);
 		return -EBUSY;
 	}
-	spin_unlock_irqrestore(&dev->out_ipc_spinlock, out_ipc_flags);
 
-	spin_lock_irqsave(&dev->wr_processing_spinlock, flags);
 	/*
 	 * if tx send list is empty - return 0;
 	 * may happen, as RX_COMPLETE handler doesn't check list emptiness.
 	 */
 	if (list_empty(&dev->wr_processing_list)) {
 		spin_unlock_irqrestore(&dev->wr_processing_spinlock, flags);
-		out_ipc_locked = 0;
 		return	0;
 	}
 
@@ -325,6 +317,8 @@ static int write_ipc_from_queue(struct ishtp_device *dev)
 		memcpy(&reg, &r_buf[length >> 2], rem);
 		ish_reg_write(dev, reg_addr, reg);
 	}
+	ish_reg_write(dev, IPC_REG_HOST2ISH_DRBL, doorbell_val);
+
 	/* Flush writes to msg registers and doorbell */
 	ish_reg_read(dev, IPC_REG_ISH_HOST_FWSTS);
 
@@ -332,9 +326,6 @@ static int write_ipc_from_queue(struct ishtp_device *dev)
 	++dev->ipc_tx_cnt;
 	dev->ipc_tx_bytes_cnt += IPC_HEADER_GET_LENGTH(doorbell_val);
 
-	ish_reg_write(dev, IPC_REG_HOST2ISH_DRBL, doorbell_val);
-	out_ipc_locked = 0;
-
 	ipc_send_compl = ipc_link->ipc_send_compl;
 	ipc_send_compl_prm = ipc_link->ipc_send_compl_prm;
 	list_del_init(&ipc_link->link);
@@ -839,11 +830,11 @@ int ish_hw_start(struct ishtp_device *dev)
 {
 	ish_set_host_rdy(dev);
 
+	set_host_ready(dev);
+
 	/* After that we can enable ISH DMA operation and wakeup ISHFW */
 	ish_wakeup(dev);
 
-	set_host_ready(dev);
-
 	/* wait for FW-initiated reset flow */
 	if (!dev->recvd_hw_ready)
 		wait_event_interruptible_timeout(dev->wait_hw_ready,
@@ -914,7 +905,6 @@ struct ishtp_device *ish_dev_init(struct pci_dev *pdev)
 	init_waitqueue_head(&dev->wait_hw_ready);
 
 	spin_lock_init(&dev->wr_processing_spinlock);
-	spin_lock_init(&dev->out_ipc_spinlock);
 
 	/* Init IPC processing and free lists */
 	INIT_LIST_HEAD(&dev->wr_processing_list);

drivers/hid/intel-ish-hid/ishtp-hid-client.c

@@ -788,8 +788,8 @@ static int hid_ishtp_cl_probe(struct ishtp_cl_device *cl_device)
 	if (!cl_device)
 		return	-ENODEV;
 
-	if (uuid_le_cmp(hid_ishtp_guid,
-			cl_device->fw_client->props.protocol_name) != 0)
+	if (!guid_equal(&hid_ishtp_guid,
+			&cl_device->fw_client->props.protocol_name))
 		return	-ENODEV;
 
 	client_data = devm_kzalloc(&cl_device->dev, sizeof(*client_data),

drivers/hid/intel-ish-hid/ishtp-hid.c

@@ -206,8 +206,8 @@ int ishtp_hid_probe(unsigned int cur_hid_dev,
 	hid->bus = BUS_INTEL_ISHTP;
 	hid->dev.parent = &client_data->cl_device->dev;
 	hid->version = le16_to_cpu(ISH_HID_VERSION);
-	hid->vendor = le16_to_cpu(ISH_HID_VENDOR);
-	hid->product = le16_to_cpu(ISH_HID_PRODUCT);
+	hid->vendor = le16_to_cpu(client_data->hid_devices[cur_hid_dev].vid);
+	hid->product = le16_to_cpu(client_data->hid_devices[cur_hid_dev].pid);
 	snprintf(hid->name, sizeof(hid->name), "%s %04X:%04X", "hid-ishtp",
 		hid->vendor, hid->product);
 

drivers/hid/intel-ish-hid/ishtp-hid.h

@@ -29,9 +29,9 @@
 		client->cl_device->ishtp_dev, __VA_ARGS__)
 
 /* ISH Transport protocol (ISHTP in short) GUID */
-static const uuid_le hid_ishtp_guid = UUID_LE(0x33AECD58, 0xB679, 0x4E54,
-					      0x9B, 0xD9, 0xA0, 0x4D, 0x34,
-					      0xF0, 0xC2, 0x26);
+static const guid_t hid_ishtp_guid =
+	GUID_INIT(0x33AECD58, 0xB679, 0x4E54,
+		  0x9B, 0xD9, 0xA0, 0x4D, 0x34, 0xF0, 0xC2, 0x26);
 
 /* ISH HID message structure */
 struct hostif_msg_hdr {

drivers/hid/intel-ish-hid/ishtp/bus.c

@@ -119,7 +119,7 @@ int ishtp_send_msg(struct ishtp_device *dev, struct ishtp_msg_hdr *hdr,
  * Return: This returns IPC send message status.
  */
 int ishtp_write_message(struct ishtp_device *dev, struct ishtp_msg_hdr *hdr,
-			unsigned char *buf)
+			void *buf)
 {
 	return ishtp_send_msg(dev, hdr, buf, NULL, NULL);
 }
@@ -133,18 +133,15 @@ int ishtp_write_message(struct ishtp_device *dev, struct ishtp_msg_hdr *hdr,
  *
  * Return: fw client index or -ENOENT if not found
  */
-int ishtp_fw_cl_by_uuid(struct ishtp_device *dev, const uuid_le *uuid)
+int ishtp_fw_cl_by_uuid(struct ishtp_device *dev, const guid_t *uuid)
 {
-	int i, res = -ENOENT;
+	unsigned int i;
 
 	for (i = 0; i < dev->fw_clients_num; ++i) {
-		if (uuid_le_cmp(*uuid, dev->fw_clients[i].props.protocol_name)
-				== 0) {
-			res = i;
-			break;
-		}
+		if (guid_equal(uuid, &dev->fw_clients[i].props.protocol_name))
+			return i;
 	}
-	return res;
+	return -ENOENT;
 }
 EXPORT_SYMBOL(ishtp_fw_cl_by_uuid);
 
@@ -158,7 +155,7 @@ EXPORT_SYMBOL(ishtp_fw_cl_by_uuid);
  * Return: pointer of client information on success, NULL on failure.
  */
 struct ishtp_fw_client *ishtp_fw_cl_get_client(struct ishtp_device *dev,
-						const uuid_le *uuid)
+					       const guid_t *uuid)
 {
 	int i;
 	unsigned long flags;
@@ -401,7 +398,7 @@ static const struct device_type ishtp_cl_device_type = {
  * Return: ishtp_cl_device pointer or NULL on failure
  */
 static struct ishtp_cl_device *ishtp_bus_add_device(struct ishtp_device *dev,
-						    uuid_le uuid, char *name)
+						    guid_t uuid, char *name)
 {
 	struct ishtp_cl_device *device;
 	int status;
@@ -629,7 +626,7 @@ int ishtp_bus_new_client(struct ishtp_device *dev)
 	int	i;
 	char	*dev_name;
 	struct ishtp_cl_device	*cl_device;
-	uuid_le	device_uuid;
+	guid_t	device_uuid;
 
 	/*
 	 * For all reported clients, create an unconnected client and add its
@@ -639,7 +636,7 @@ int ishtp_bus_new_client(struct ishtp_device *dev)
 	 */
 	i = dev->fw_client_presentation_num - 1;
 	device_uuid = dev->fw_clients[i].props.protocol_name;
-	dev_name = kasprintf(GFP_KERNEL, "{%pUL}", device_uuid.b);
+	dev_name = kasprintf(GFP_KERNEL, "{%pUL}", &device_uuid);
 	if (!dev_name)
 		return	-ENOMEM;
 
@@ -675,7 +672,8 @@ int ishtp_cl_device_bind(struct ishtp_cl *cl)
 	spin_lock_irqsave(&cl->dev->device_list_lock, flags);
 	list_for_each_entry(cl_device, &cl->dev->device_list,
 			device_link) {
-		if (cl_device->fw_client->client_id == cl->fw_client_id) {
+		if (cl_device->fw_client &&
+		    cl_device->fw_client->client_id == cl->fw_client_id) {
 			cl->device = cl_device;
 			rv = 0;
 			break;
@@ -735,6 +733,7 @@ void ishtp_bus_remove_all_clients(struct ishtp_device *ishtp_dev,
 	spin_lock_irqsave(&ishtp_dev->device_list_lock, flags);
 	list_for_each_entry_safe(cl_device, n, &ishtp_dev->device_list,
 				 device_link) {
+		cl_device->fw_client = NULL;
 		if (warm_reset && cl_device->reference_count)
 			continue;
 

drivers/hid/intel-ish-hid/ishtp/bus.h

@@ -85,7 +85,7 @@ int	ishtp_send_msg(struct ishtp_device *dev,
 /* Write a single-fragment message */
 int	ishtp_write_message(struct ishtp_device *dev,
 			    struct ishtp_msg_hdr *hdr,
-			    unsigned char *buf);
+			    void *buf);
 
 /* Use DMA to send/receive messages */
 int ishtp_use_dma_transfer(void);
@@ -112,8 +112,8 @@ void	ishtp_cl_driver_unregister(struct ishtp_cl_driver *driver);
 
 int	ishtp_register_event_cb(struct ishtp_cl_device *device,
 				void (*read_cb)(struct ishtp_cl_device *));
-int	ishtp_fw_cl_by_uuid(struct ishtp_device *dev, const uuid_le *cuuid);
+int	ishtp_fw_cl_by_uuid(struct ishtp_device *dev, const guid_t *cuuid);
 struct	ishtp_fw_client *ishtp_fw_cl_get_client(struct ishtp_device *dev,
-						const uuid_le *uuid);
+						const guid_t *uuid);
 
 #endif /* _LINUX_ISHTP_CL_BUS_H */

drivers/hid/intel-ish-hid/ishtp/client.h

@@ -126,7 +126,7 @@ struct ishtp_cl {
 };
 
 /* Client connection managenment internal functions */
-int ishtp_can_client_connect(struct ishtp_device *ishtp_dev, uuid_le *uuid);
+int ishtp_can_client_connect(struct ishtp_device *ishtp_dev, guid_t *uuid);
 int ishtp_fw_cl_by_id(struct ishtp_device *dev, uint8_t client_id);
 void ishtp_cl_send_msg(struct ishtp_device *dev, struct ishtp_cl *cl);
 void recv_ishtp_cl_msg(struct ishtp_device *dev,

drivers/hid/intel-ish-hid/ishtp/hbm.c

@@ -136,19 +136,14 @@ int ishtp_hbm_start_wait(struct ishtp_device *dev)
 int ishtp_hbm_start_req(struct ishtp_device *dev)
 {
 	struct ishtp_msg_hdr hdr;
-	unsigned char data[128];
-	struct ishtp_msg_hdr *ishtp_hdr = &hdr;
-	struct hbm_host_version_request *start_req;
-	const size_t len = sizeof(struct hbm_host_version_request);
+	struct hbm_host_version_request start_req = { 0 };
 
-	ishtp_hbm_hdr(ishtp_hdr, len);
+	ishtp_hbm_hdr(&hdr, sizeof(start_req));
 
 	/* host start message */
-	start_req = (struct hbm_host_version_request *)data;
-	memset(start_req, 0, len);
-	start_req->hbm_cmd = HOST_START_REQ_CMD;
-	start_req->host_version.major_version = HBM_MAJOR_VERSION;
-	start_req->host_version.minor_version = HBM_MINOR_VERSION;
+	start_req.hbm_cmd = HOST_START_REQ_CMD;
+	start_req.host_version.major_version = HBM_MAJOR_VERSION;
+	start_req.host_version.minor_version = HBM_MINOR_VERSION;
 
 	/*
 	 * (!) Response to HBM start may be so quick that this thread would get
@@ -156,7 +151,7 @@ int ishtp_hbm_start_req(struct ishtp_device *dev)
 	 * So set it at first, change back to ISHTP_HBM_IDLE upon failure
 	 */
 	dev->hbm_state = ISHTP_HBM_START;
-	if (ishtp_write_message(dev, ishtp_hdr, data)) {
+	if (ishtp_write_message(dev, &hdr, &start_req)) {
 		dev_err(dev->devc, "version message send failed\n");
 		dev->dev_state = ISHTP_DEV_RESETTING;
 		dev->hbm_state = ISHTP_HBM_IDLE;
@@ -178,19 +173,13 @@ int ishtp_hbm_start_req(struct ishtp_device *dev)
 void ishtp_hbm_enum_clients_req(struct ishtp_device *dev)
 {
 	struct ishtp_msg_hdr hdr;
-	unsigned char data[128];
-	struct ishtp_msg_hdr *ishtp_hdr = &hdr;
-	struct hbm_host_enum_request *enum_req;
-	const size_t len = sizeof(struct hbm_host_enum_request);
+	struct hbm_host_enum_request enum_req = { 0 };
 
 	/* enumerate clients */
-	ishtp_hbm_hdr(ishtp_hdr, len);
+	ishtp_hbm_hdr(&hdr, sizeof(enum_req));
+	enum_req.hbm_cmd = HOST_ENUM_REQ_CMD;
 
-	enum_req = (struct hbm_host_enum_request *)data;
-	memset(enum_req, 0, len);
-	enum_req->hbm_cmd = HOST_ENUM_REQ_CMD;
-
-	if (ishtp_write_message(dev, ishtp_hdr, data)) {
+	if (ishtp_write_message(dev, &hdr, &enum_req)) {
 		dev->dev_state = ISHTP_DEV_RESETTING;
 		dev_err(dev->devc, "enumeration request send failed\n");
 		ish_hw_reset(dev);
@@ -208,12 +197,8 @@ void ishtp_hbm_enum_clients_req(struct ishtp_device *dev)
  */
 static int ishtp_hbm_prop_req(struct ishtp_device *dev)
 {
-
 	struct ishtp_msg_hdr hdr;
-	unsigned char data[128];
-	struct ishtp_msg_hdr *ishtp_hdr = &hdr;
-	struct hbm_props_request *prop_req;
-	const size_t len = sizeof(struct hbm_props_request);
+	struct hbm_props_request prop_req = { 0 };
 	unsigned long next_client_index;
 	uint8_t client_num;
 
@@ -237,15 +222,12 @@ static int ishtp_hbm_prop_req(struct ishtp_device *dev)
 
 	dev->fw_clients[client_num].client_id = next_client_index;
 
-	ishtp_hbm_hdr(ishtp_hdr, len);
-	prop_req = (struct hbm_props_request *)data;
+	ishtp_hbm_hdr(&hdr, sizeof(prop_req));
 
-	memset(prop_req, 0, sizeof(struct hbm_props_request));
+	prop_req.hbm_cmd = HOST_CLIENT_PROPERTIES_REQ_CMD;
+	prop_req.address = next_client_index;
 
-	prop_req->hbm_cmd = HOST_CLIENT_PROPERTIES_REQ_CMD;
-	prop_req->address = next_client_index;
-
-	if (ishtp_write_message(dev, ishtp_hdr, data)) {
+	if (ishtp_write_message(dev, &hdr, &prop_req)) {
 		dev->dev_state = ISHTP_DEV_RESETTING;
 		dev_err(dev->devc, "properties request send failed\n");
 		ish_hw_reset(dev);
@@ -266,19 +248,14 @@ static int ishtp_hbm_prop_req(struct ishtp_device *dev)
 static void ishtp_hbm_stop_req(struct ishtp_device *dev)
 {
 	struct ishtp_msg_hdr hdr;
-	unsigned char data[128];
-	struct ishtp_msg_hdr *ishtp_hdr = &hdr;
-	struct hbm_host_stop_request *req;
-	const size_t len = sizeof(struct hbm_host_stop_request);
+	struct hbm_host_stop_request stop_req = { 0 } ;
 
-	ishtp_hbm_hdr(ishtp_hdr, len);
-	req = (struct hbm_host_stop_request *)data;
+	ishtp_hbm_hdr(&hdr, sizeof(stop_req));
 
-	memset(req, 0, sizeof(struct hbm_host_stop_request));
-	req->hbm_cmd = HOST_STOP_REQ_CMD;
-	req->reason = DRIVER_STOP_REQUEST;
+	stop_req.hbm_cmd = HOST_STOP_REQ_CMD;
+	stop_req.reason = DRIVER_STOP_REQUEST;
 
-	ishtp_write_message(dev, ishtp_hdr, data);
+	ishtp_write_message(dev, &hdr, &stop_req);
 }
 
 /**
@@ -294,15 +271,15 @@ int ishtp_hbm_cl_flow_control_req(struct ishtp_device *dev,
 				  struct ishtp_cl *cl)
 {
 	struct ishtp_msg_hdr hdr;
-	unsigned char data[128];
-	struct ishtp_msg_hdr *ishtp_hdr = &hdr;
-	const size_t len = sizeof(struct hbm_flow_control);
+	struct hbm_flow_control flow_ctrl;
+	const size_t len = sizeof(flow_ctrl);
 	int	rv;
 	unsigned long	flags;
 
 	spin_lock_irqsave(&cl->fc_spinlock, flags);
-	ishtp_hbm_hdr(ishtp_hdr, len);
-	ishtp_hbm_cl_hdr(cl, ISHTP_FLOW_CONTROL_CMD, data, len);
+
+	ishtp_hbm_hdr(&hdr, len);
+	ishtp_hbm_cl_hdr(cl, ISHTP_FLOW_CONTROL_CMD, &flow_ctrl, len);
 
 	/*
 	 * Sync possible race when RB recycle and packet receive paths
@@ -315,7 +292,7 @@ int ishtp_hbm_cl_flow_control_req(struct ishtp_device *dev,
 
 	cl->recv_msg_num_frags = 0;
 
-	rv = ishtp_write_message(dev, ishtp_hdr, data);
+	rv = ishtp_write_message(dev, &hdr, &flow_ctrl);
 	if (!rv) {
 		++cl->out_flow_ctrl_creds;
 		++cl->out_flow_ctrl_cnt;
@@ -345,14 +322,13 @@ int ishtp_hbm_cl_flow_control_req(struct ishtp_device *dev,
 int ishtp_hbm_cl_disconnect_req(struct ishtp_device *dev, struct ishtp_cl *cl)
 {
 	struct ishtp_msg_hdr hdr;
-	unsigned char data[128];
-	struct ishtp_msg_hdr *ishtp_hdr = &hdr;
-	const size_t len = sizeof(struct hbm_client_connect_request);
+	struct hbm_client_connect_request disconn_req;
+	const size_t len = sizeof(disconn_req);
 
-	ishtp_hbm_hdr(ishtp_hdr, len);
-	ishtp_hbm_cl_hdr(cl, CLIENT_DISCONNECT_REQ_CMD, data, len);
+	ishtp_hbm_hdr(&hdr, len);
+	ishtp_hbm_cl_hdr(cl, CLIENT_DISCONNECT_REQ_CMD, &disconn_req, len);
 
-	return ishtp_write_message(dev, ishtp_hdr, data);
+	return ishtp_write_message(dev, &hdr, &disconn_req);
 }
 
 /**
@@ -391,14 +367,13 @@ static void ishtp_hbm_cl_disconnect_res(struct ishtp_device *dev,
 int ishtp_hbm_cl_connect_req(struct ishtp_device *dev, struct ishtp_cl *cl)
 {
 	struct ishtp_msg_hdr hdr;
-	unsigned char data[128];
-	struct ishtp_msg_hdr *ishtp_hdr = &hdr;
-	const size_t len = sizeof(struct hbm_client_connect_request);
+	struct hbm_client_connect_request conn_req;
+	const size_t len = sizeof(conn_req);
 
-	ishtp_hbm_hdr(ishtp_hdr, len);
-	ishtp_hbm_cl_hdr(cl, CLIENT_CONNECT_REQ_CMD, data, len);
+	ishtp_hbm_hdr(&hdr, len);
+	ishtp_hbm_cl_hdr(cl, CLIENT_CONNECT_REQ_CMD, &conn_req, len);
 
-	return ishtp_write_message(dev, ishtp_hdr, data);
+	return ishtp_write_message(dev, &hdr, &conn_req);
 }
 
 /**

drivers/hid/intel-ish-hid/ishtp/hbm.h

@@ -149,7 +149,7 @@ struct hbm_host_enum_response {
 } __packed;
 
 struct ishtp_client_properties {
-	uuid_le protocol_name;
+	guid_t protocol_name;
 	uint8_t protocol_version;
 	uint8_t max_number_of_connections;
 	uint8_t fixed_address;

drivers/hid/intel-ish-hid/ishtp/ishtp-dev.h

@@ -211,8 +211,6 @@ struct ishtp_device {
 	/* For both processing list  and free list */
 	spinlock_t wr_processing_spinlock;
 
-	spinlock_t out_ipc_spinlock;
-
 	struct ishtp_fw_client *fw_clients; /*Note:memory has to be allocated*/
 	DECLARE_BITMAP(fw_clients_map, ISHTP_CLIENTS_MAX);
 	DECLARE_BITMAP(host_clients_map, ISHTP_CLIENTS_MAX);

drivers/hid/wacom_sys.c

@@ -252,6 +252,38 @@ static void wacom_hid_usage_quirk(struct hid_device *hdev,
 		}
 	}
 
+	/*
+	 * Wacom's AES devices use different vendor-defined usages to
+	 * report serial number information compared to their branded
+	 * hardware. The usages are also sometimes ill-defined and do
+	 * not have the correct logical min/max values set. Lets patch
+	 * the descriptor to use the branded usage convention and fix
+	 * the errors.
+	 */
+	if (usage->hid == WACOM_HID_WT_SERIALNUMBER &&
+	    field->report_size == 16 &&
+	    field->index + 2 < field->report->maxfield) {
+		struct hid_field *a = field->report->field[field->index + 1];
+		struct hid_field *b = field->report->field[field->index + 2];
+
+		if (a->maxusage > 0 &&
+		    a->usage[0].hid == HID_DG_TOOLSERIALNUMBER &&
+		    a->report_size == 32 &&
+		    b->maxusage > 0 &&
+		    b->usage[0].hid == 0xFF000000 &&
+		    b->report_size == 8) {
+			features->quirks |= WACOM_QUIRK_AESPEN;
+			usage->hid = WACOM_HID_WD_TOOLTYPE;
+			field->logical_minimum = S16_MIN;
+			field->logical_maximum = S16_MAX;
+			a->logical_minimum = S32_MIN;
+			a->logical_maximum = S32_MAX;
+			b->usage[0].hid = WACOM_HID_WD_SERIALHI;
+			b->logical_minimum = 0;
+			b->logical_maximum = U8_MAX;
+		}
+	}
+
 	/* 2nd-generation Intuos Pro Large has incorrect Y maximum */
 	if (hdev->vendor == USB_VENDOR_ID_WACOM &&
 	    hdev->product == 0x0358 &&

drivers/hid/wacom_wac.c

@@ -626,6 +626,7 @@ static int wacom_intuos_get_tool_type(int tool_id)
 	case 0x8e2: /* IntuosHT2 pen */
 	case 0x022:
 	case 0x10804: /* Intuos4/5 13HD/24HD Art Pen */
+	case 0x10842: /* MobileStudio Pro Pro Pen slim */
 	case 0x14802: /* Intuos4/5 13HD/24HD Classic Pen */
 	case 0x16802: /* Cintiq 13HD Pro Pen */
 	case 0x18802: /* DTH2242 Pen */
@@ -667,6 +668,7 @@ static int wacom_intuos_get_tool_type(int tool_id)
 	case 0x1480a: /* Intuos4/5 13HD/24HD Classic Pen Eraser */
 	case 0x1090a: /* Intuos4/5 13HD/24HD Airbrush Eraser */
 	case 0x1080c: /* Intuos4/5 13HD/24HD Art Pen Eraser */
+	case 0x1084a: /* MobileStudio Pro Pro Pen slim Eraser */
 	case 0x1680a: /* Cintiq 13HD Pro Pen Eraser */
 	case 0x1880a: /* DTH2242 Eraser */
 	case 0x1080a: /* Intuos4/5 13HD/24HD General Pen Eraser */
@@ -2159,27 +2161,6 @@ static void wacom_wac_pen_usage_mapping(struct hid_device *hdev,
 	case HID_DG_TOOLSERIALNUMBER:
 		features->quirks |= WACOM_QUIRK_TOOLSERIAL;
 		wacom_map_usage(input, usage, field, EV_MSC, MSC_SERIAL, 0);
-
-		/* Adjust AES usages to match modern convention */
-		if (usage->hid == WACOM_HID_WT_SERIALNUMBER && field->report_size == 16) {
-			if (field->index + 2 < field->report->maxfield) {
-				struct hid_field *a = field->report->field[field->index + 1];
-				struct hid_field *b = field->report->field[field->index + 2];
-
-				if (a->maxusage > 0 && a->usage[0].hid == HID_DG_TOOLSERIALNUMBER && a->report_size == 32 &&
-				    b->maxusage > 0 && b->usage[0].hid == 0xFF000000 && b->report_size == 8) {
-					features->quirks |= WACOM_QUIRK_AESPEN;
-					usage->hid = WACOM_HID_WD_TOOLTYPE;
-					field->logical_minimum = S16_MIN;
-					field->logical_maximum = S16_MAX;
-					a->logical_minimum = S32_MIN;
-					a->logical_maximum = S32_MAX;
-					b->usage[0].hid = WACOM_HID_WD_SERIALHI;
-					b->logical_minimum = 0;
-					b->logical_maximum = U8_MAX;
-				}
-			}
-		}
 		break;
 	case WACOM_HID_WD_SENSE:
 		features->quirks |= WACOM_QUIRK_SENSE;
@@ -3525,6 +3506,7 @@ int wacom_setup_pen_input_capabilities(struct input_dev *input_dev,
 	switch (features->type) {
 	case GRAPHIRE_BT:
 		__clear_bit(ABS_MISC, input_dev->absbit);
+		/* fall through */
 
 	case WACOM_MO:
 	case WACOM_G4: