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

Pull HID updates from Jiri Kosina:

 - high resolution mode for Dell canvas support, from Benjamin Tissoires

 - pen handling fixes for the Wacom driver, from Jason Gerecke

 - i2c-hid: Apollo-Lake based laptops improvements, from Hans de Goede

 - Input/Core: eraser tool support, from Ping Cheng

 - new ALPS touchpad (T4, found currently on HP EliteBook 1000, Zbook
   Stduio and HP Elite book x360) supportm from Masaki Ota

 - other smaller assorted fixes

* 'for-linus' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (33 commits)
  HID: cp2112: fix broken gpio_direction_input callback
  HID: cp2112: fix interface specification URL
  HID: Wacom: switch Dell canvas into highres mode
  HID: wacom: generic: Send BTN_STYLUS3 when both barrel switches are set
  HID: sony: Fix SHANWAN pad rumbling on USB
  HID: i2c-hid: Add no-irq-after-reset quirk for 0911:5288 device
  HID: add backlight level quirk for Asus ROG laptops
  HID: cp2112: add HIDRAW dependency
  HID: Add ID 044f:b605 ThrustMaster, Inc. force feedback Racing Wheel
  HID: hid-logitech: remove redundant assignment to pointer value
  HID: wacom: generic: Recognize WACOM_HID_WD_PEN as a type of pen collection
  HID: rmi: Check that a device is a RMI device before calling RMI functions
  HID: add multi-input quirk for GamepadBlock
  HID: alps: add new U1 device ID
  HID: alps: add support for Alps T4 Touchpad device
  HID: alps: remove variables local to u1_init() from the device struct
  HID: alps: properly handle max_fingers and minimum on X and Y axis
  HID: alps: Separate U1 device code
  HID: alps: delete unnecessary struct u1_dev devInfo
  HID: usbhid: Convert timers to use timer_setup()
  ...

22 files changed, 608 insertions, 149 deletions

diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 374301fcbc86..779c5ae47f36 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -230,7 +230,7 @@ config HID_CMEDIA
 
 config HID_CP2112
 	tristate "Silicon Labs CP2112 HID USB-to-SMBus Bridge support"
-	depends on USB_HID && I2C && GPIOLIB
+	depends on USB_HID && HIDRAW && I2C && GPIOLIB
 	select GPIOLIB_IRQCHIP
 	---help---
 	Support for Silicon Labs CP2112 HID USB to SMBus Master Bridge.
@@ -750,11 +750,10 @@ config HID_PRIMAX
 	HID standard.
 
 config HID_RETRODE
-	tristate "Retrode"
+	tristate "Retrode 2 USB adapter for vintage video games"
 	depends on USB_HID
 	---help---
 	Support for
-
 	  * Retrode 2 cartridge and controller adapter
 
 config HID_ROCCAT
diff --git a/drivers/hid/hid-alps.c b/drivers/hid/hid-alps.c
index ed9c0ea5b026..b1eeb4839bfc 100644
--- a/drivers/hid/hid-alps.c
+++ b/drivers/hid/hid-alps.c
@@ -52,8 +52,30 @@
 #define ADDRESS_U1_PAD_BTN		0x00800052
 #define ADDRESS_U1_SP_BTN		0x0080009F
 
+#define T4_INPUT_REPORT_LEN			sizeof(struct t4_input_report)
+#define T4_FEATURE_REPORT_LEN		T4_INPUT_REPORT_LEN
+#define T4_FEATURE_REPORT_ID		7
+#define T4_CMD_REGISTER_READ			0x08
+#define T4_CMD_REGISTER_WRITE			0x07
+
+#define T4_ADDRESS_BASE				0xC2C0
+#define PRM_SYS_CONFIG_1			(T4_ADDRESS_BASE + 0x0002)
+#define T4_PRM_FEED_CONFIG_1		(T4_ADDRESS_BASE + 0x0004)
+#define T4_PRM_FEED_CONFIG_4		(T4_ADDRESS_BASE + 0x001A)
+#define T4_PRM_ID_CONFIG_3			(T4_ADDRESS_BASE + 0x00B0)
+
+
+#define T4_FEEDCFG4_ADVANCED_ABS_ENABLE			0x01
+#define T4_I2C_ABS	0x78
+
+#define T4_COUNT_PER_ELECTRODE		256
 #define MAX_TOUCHES	5
 
+enum dev_num {
+	U1,
+	T4,
+	UNKNOWN,
+};
 /**
  * struct u1_data
  *
@@ -61,43 +83,173 @@
  * @input2: pointer to the kernel input2 device
  * @hdev: pointer to the struct hid_device
  *
- * @dev_ctrl: device control parameter
  * @dev_type: device type
- * @sen_line_num_x: number of sensor line of X
- * @sen_line_num_y: number of sensor line of Y
- * @pitch_x: sensor pitch of X
- * @pitch_y: sensor pitch of Y
- * @resolution: resolution
- * @btn_info: button information
+ * @max_fingers: total number of fingers
+ * @has_sp: boolean of sp existense
+ * @sp_btn_info: button information
  * @x_active_len_mm: active area length of X (mm)
  * @y_active_len_mm: active area length of Y (mm)
  * @x_max: maximum x coordinate value
  * @y_max: maximum y coordinate value
+ * @x_min: minimum x coordinate value
+ * @y_min: minimum y coordinate value
  * @btn_cnt: number of buttons
  * @sp_btn_cnt: number of stick buttons
  */
-struct u1_dev {
+struct alps_dev {
 	struct input_dev *input;
 	struct input_dev *input2;
 	struct hid_device *hdev;
 
-	u8	dev_ctrl;
-	u8	dev_type;
-	u8	sen_line_num_x;
-	u8	sen_line_num_y;
-	u8	pitch_x;
-	u8	pitch_y;
-	u8	resolution;
-	u8	btn_info;
+	enum dev_num dev_type;
+	u8  max_fingers;
+	u8  has_sp;
 	u8	sp_btn_info;
 	u32	x_active_len_mm;
 	u32	y_active_len_mm;
 	u32	x_max;
 	u32	y_max;
+	u32	x_min;
+	u32	y_min;
 	u32	btn_cnt;
 	u32	sp_btn_cnt;
 };
 
+struct t4_contact_data {
+	u8  palm;
+	u8	x_lo;
+	u8	x_hi;
+	u8	y_lo;
+	u8	y_hi;
+};
+
+struct t4_input_report {
+	u8  reportID;
+	u8  numContacts;
+	struct t4_contact_data contact[5];
+	u8  button;
+	u8  track[5];
+	u8  zx[5], zy[5];
+	u8  palmTime[5];
+	u8  kilroy;
+	u16 timeStamp;
+};
+
+static u16 t4_calc_check_sum(u8 *buffer,
+		unsigned long offset, unsigned long length)
+{
+	u16 sum1 = 0xFF, sum2 = 0xFF;
+	unsigned long i = 0;
+
+	if (offset + length >= 50)
+		return 0;
+
+	while (length > 0) {
+		u32 tlen = length > 20 ? 20 : length;
+
+		length -= tlen;
+
+		do {
+			sum1 += buffer[offset + i];
+			sum2 += sum1;
+			i++;
+		} while (--tlen > 0);
+
+		sum1 = (sum1 & 0xFF) + (sum1 >> 8);
+		sum2 = (sum2 & 0xFF) + (sum2 >> 8);
+	}
+
+	sum1 = (sum1 & 0xFF) + (sum1 >> 8);
+	sum2 = (sum2 & 0xFF) + (sum2 >> 8);
+
+	return(sum2 << 8 | sum1);
+}
+
+static int t4_read_write_register(struct hid_device *hdev, u32 address,
+	u8 *read_val, u8 write_val, bool read_flag)
+{
+	int ret;
+	u16 check_sum;
+	u8 *input;
+	u8 *readbuf;
+
+	input = kzalloc(T4_FEATURE_REPORT_LEN, GFP_KERNEL);
+	if (!input)
+		return -ENOMEM;
+
+	input[0] = T4_FEATURE_REPORT_ID;
+	if (read_flag) {
+		input[1] = T4_CMD_REGISTER_READ;
+		input[8] = 0x00;
+	} else {
+		input[1] = T4_CMD_REGISTER_WRITE;
+		input[8] = write_val;
+	}
+	put_unaligned_le32(address, input + 2);
+	input[6] = 1;
+	input[7] = 0;
+
+	/* Calculate the checksum */
+	check_sum = t4_calc_check_sum(input, 1, 8);
+	input[9] = (u8)check_sum;
+	input[10] = (u8)(check_sum >> 8);
+	input[11] = 0;
+
+	ret = hid_hw_raw_request(hdev, T4_FEATURE_REPORT_ID, input,
+			T4_FEATURE_REPORT_LEN,
+			HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
+
+	if (ret < 0) {
+		dev_err(&hdev->dev, "failed to read command (%d)\n", ret);
+		goto exit;
+	}
+
+	readbuf = kzalloc(T4_FEATURE_REPORT_LEN, GFP_KERNEL);
+	if (read_flag) {
+		if (!readbuf) {
+			ret = -ENOMEM;
+			goto exit;
+		}
+
+		ret = hid_hw_raw_request(hdev, T4_FEATURE_REPORT_ID, readbuf,
+				T4_FEATURE_REPORT_LEN,
+				HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
+		if (ret < 0) {
+			dev_err(&hdev->dev, "failed read register (%d)\n", ret);
+			goto exit_readbuf;
+		}
+
+		if (*(u32 *)&readbuf[6] != address) {
+			dev_err(&hdev->dev, "read register address error (%x,%x)\n",
+			*(u32 *)&readbuf[6], address);
+			goto exit_readbuf;
+		}
+
+		if (*(u16 *)&readbuf[10] != 1) {
+			dev_err(&hdev->dev, "read register size error (%x)\n",
+			*(u16 *)&readbuf[10]);
+			goto exit_readbuf;
+		}
+
+		check_sum = t4_calc_check_sum(readbuf, 6, 7);
+		if (*(u16 *)&readbuf[13] != check_sum) {
+			dev_err(&hdev->dev, "read register checksum error (%x,%x)\n",
+			*(u16 *)&readbuf[13], check_sum);
+			goto exit_readbuf;
+		}
+
+		*read_val = readbuf[12];
+	}
+
+	ret = 0;
+
+exit_readbuf:
+	kfree(readbuf);
+exit:
+	kfree(input);
+	return ret;
+}
+
 static int u1_read_write_register(struct hid_device *hdev, u32 address,
 	u8 *read_val, u8 write_val, bool read_flag)
 {
@@ -165,21 +317,60 @@ exit:
 	return ret;
 }
 
-static int alps_raw_event(struct hid_device *hdev,
-		struct hid_report *report, u8 *data, int size)
+static int t4_raw_event(struct alps_dev *hdata, u8 *data, int size)
+{
+	unsigned int x, y, z;
+	int i;
+	struct t4_input_report *p_report = (struct t4_input_report *)data;
+
+	if (!data)
+		return 0;
+	for (i = 0; i < hdata->max_fingers; i++) {
+		x = p_report->contact[i].x_hi << 8 | p_report->contact[i].x_lo;
+		y = p_report->contact[i].y_hi << 8 | p_report->contact[i].y_lo;
+		y = hdata->y_max - y + hdata->y_min;
+		z = (p_report->contact[i].palm < 0x80 &&
+			p_report->contact[i].palm > 0) * 62;
+		if (x == 0xffff) {
+			x = 0;
+			y = 0;
+			z = 0;
+		}
+		input_mt_slot(hdata->input, i);
+
+		input_mt_report_slot_state(hdata->input,
+			MT_TOOL_FINGER, z != 0);
+
+		if (!z)
+			continue;
+
+		input_report_abs(hdata->input, ABS_MT_POSITION_X, x);
+		input_report_abs(hdata->input, ABS_MT_POSITION_Y, y);
+		input_report_abs(hdata->input, ABS_MT_PRESSURE, z);
+	}
+	input_mt_sync_frame(hdata->input);
+
+	input_report_key(hdata->input, BTN_LEFT, p_report->button);
+
+	input_sync(hdata->input);
+	return 1;
+}
+
+static int u1_raw_event(struct alps_dev *hdata, u8 *data, int size)
 {
 	unsigned int x, y, z;
 	int i;
 	short sp_x, sp_y;
-	struct u1_dev *hdata = hid_get_drvdata(hdev);
 
+	if (!data)
+		return 0;
 	switch (data[0]) {
 	case U1_MOUSE_REPORT_ID:
 		break;
 	case U1_FEATURE_REPORT_ID:
 		break;
 	case U1_ABSOLUTE_REPORT_ID:
-		for (i = 0; i < MAX_TOUCHES; i++) {
+		for (i = 0; i < hdata->max_fingers; i++) {
 			u8 *contact = &data[i * 5];
 
 			x = get_unaligned_le16(contact + 3);
@@ -241,122 +432,253 @@ static int alps_raw_event(struct hid_device *hdev,
 	return 0;
 }
 
-#ifdef CONFIG_PM
-static int alps_post_reset(struct hid_device *hdev)
+static int alps_raw_event(struct hid_device *hdev,
+		struct hid_report *report, u8 *data, int size)
 {
-	return u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
-				NULL, U1_TP_ABS_MODE | U1_SP_ABS_MODE, false);
+	int ret = 0;
+	struct alps_dev *hdata = hid_get_drvdata(hdev);
+
+	switch (hdev->product) {
+	case HID_PRODUCT_ID_T4_BTNLESS:
+		ret = t4_raw_event(hdata, data, size);
+		break;
+	default:
+		ret = u1_raw_event(hdata, data, size);
+		break;
+	}
+	return ret;
 }
 
-static int alps_post_resume(struct hid_device *hdev)
+static int __maybe_unused alps_post_reset(struct hid_device *hdev)
 {
-	return u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
-				NULL, U1_TP_ABS_MODE | U1_SP_ABS_MODE, false);
+	int ret = -1;
+	struct alps_dev *data = hid_get_drvdata(hdev);
+
+	switch (data->dev_type) {
+	case T4:
+		ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_1,
+			NULL, T4_I2C_ABS, false);
+		ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_4,
+			NULL, T4_FEEDCFG4_ADVANCED_ABS_ENABLE, false);
+		break;
+	case U1:
+		ret = u1_read_write_register(hdev,
+			ADDRESS_U1_DEV_CTRL_1, NULL,
+			U1_TP_ABS_MODE | U1_SP_ABS_MODE, false);
+		break;
+	default:
+		break;
+	}
+	return ret;
 }
-#endif /* CONFIG_PM */
 
-static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi)
+static int __maybe_unused alps_post_resume(struct hid_device *hdev)
 {
-	struct u1_dev *data = hid_get_drvdata(hdev);
-	struct input_dev *input = hi->input, *input2;
-	struct u1_dev devInfo;
-	int ret;
-	int res_x, res_y, i;
-
-	data->input = input;
-
-	hid_dbg(hdev, "Opening low level driver\n");
-	ret = hid_hw_open(hdev);
-	if (ret)
-		return ret;
+	return alps_post_reset(hdev);
+}
 
-	/* Allow incoming hid reports */
-	hid_device_io_start(hdev);
+static int u1_init(struct hid_device *hdev, struct alps_dev *pri_data)
+{
+	int ret;
+	u8 tmp, dev_ctrl, sen_line_num_x, sen_line_num_y;
+	u8 pitch_x, pitch_y, resolution;
 
 	/* Device initialization */
 	ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
-			&devInfo.dev_ctrl, 0, true);
+			&dev_ctrl, 0, true);
 	if (ret < 0) {
 		dev_err(&hdev->dev, "failed U1_DEV_CTRL_1 (%d)\n", ret);
 		goto exit;
 	}
 
-	devInfo.dev_ctrl &= ~U1_DISABLE_DEV;
-	devInfo.dev_ctrl |= U1_TP_ABS_MODE;
+	dev_ctrl &= ~U1_DISABLE_DEV;
+	dev_ctrl |= U1_TP_ABS_MODE;
 	ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
-			NULL, devInfo.dev_ctrl, false);
+			NULL, dev_ctrl, false);
 	if (ret < 0) {
 		dev_err(&hdev->dev, "failed to change TP mode (%d)\n", ret);
 		goto exit;
 	}
 
 	ret = u1_read_write_register(hdev, ADDRESS_U1_NUM_SENS_X,
-			&devInfo.sen_line_num_x, 0, true);
+			&sen_line_num_x, 0, true);
 	if (ret < 0) {
 		dev_err(&hdev->dev, "failed U1_NUM_SENS_X (%d)\n", ret);
 		goto exit;
 	}
 
 	ret = u1_read_write_register(hdev, ADDRESS_U1_NUM_SENS_Y,
-			&devInfo.sen_line_num_y, 0, true);
+			&sen_line_num_y, 0, true);
 		if (ret < 0) {
 		dev_err(&hdev->dev, "failed U1_NUM_SENS_Y (%d)\n", ret);
 		goto exit;
 	}
 
 	ret = u1_read_write_register(hdev, ADDRESS_U1_PITCH_SENS_X,
-			&devInfo.pitch_x, 0, true);
+			&pitch_x, 0, true);
 	if (ret < 0) {
 		dev_err(&hdev->dev, "failed U1_PITCH_SENS_X (%d)\n", ret);
 		goto exit;
 	}
 
 	ret = u1_read_write_register(hdev, ADDRESS_U1_PITCH_SENS_Y,
-			&devInfo.pitch_y, 0, true);
+			&pitch_y, 0, true);
 	if (ret < 0) {
 		dev_err(&hdev->dev, "failed U1_PITCH_SENS_Y (%d)\n", ret);
 		goto exit;
 	}
 
 	ret = u1_read_write_register(hdev, ADDRESS_U1_RESO_DWN_ABS,
-		&devInfo.resolution, 0, true);
+		&resolution, 0, true);
 	if (ret < 0) {
 		dev_err(&hdev->dev, "failed U1_RESO_DWN_ABS (%d)\n", ret);
 		goto exit;
 	}
+	pri_data->x_active_len_mm =
+		(pitch_x * (sen_line_num_x - 1)) / 10;
+	pri_data->y_active_len_mm =
+		(pitch_y * (sen_line_num_y - 1)) / 10;
+
+	pri_data->x_max =
+		(resolution << 2) * (sen_line_num_x - 1);
+	pri_data->x_min = 1;
+	pri_data->y_max =
+		(resolution << 2) * (sen_line_num_y - 1);
+	pri_data->y_min = 1;
 
 	ret = u1_read_write_register(hdev, ADDRESS_U1_PAD_BTN,
-			&devInfo.btn_info, 0, true);
+			&tmp, 0, true);
 	if (ret < 0) {
 		dev_err(&hdev->dev, "failed U1_PAD_BTN (%d)\n", ret);
 		goto exit;
 	}
+	if ((tmp & 0x0F) == (tmp & 0xF0) >> 4) {
+		pri_data->btn_cnt = (tmp & 0x0F);
+	} else {
+		/* Button pad */
+		pri_data->btn_cnt = 1;
+	}
 
+	pri_data->has_sp = 0;
 	/* Check StickPointer device */
 	ret = u1_read_write_register(hdev, ADDRESS_U1_DEVICE_TYP,
-			&devInfo.dev_type, 0, true);
+			&tmp, 0, true);
 	if (ret < 0) {
 		dev_err(&hdev->dev, "failed U1_DEVICE_TYP (%d)\n", ret);
 		goto exit;
 	}
+	if (tmp & U1_DEVTYPE_SP_SUPPORT) {
+		dev_ctrl |= U1_SP_ABS_MODE;
+		ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
+			NULL, dev_ctrl, false);
+		if (ret < 0) {
+			dev_err(&hdev->dev, "failed SP mode (%d)\n", ret);
+			goto exit;
+		}
 
-	devInfo.x_active_len_mm =
-		(devInfo.pitch_x * (devInfo.sen_line_num_x - 1)) / 10;
-	devInfo.y_active_len_mm =
-		(devInfo.pitch_y * (devInfo.sen_line_num_y - 1)) / 10;
+		ret = u1_read_write_register(hdev, ADDRESS_U1_SP_BTN,
+			&pri_data->sp_btn_info, 0, true);
+		if (ret < 0) {
+			dev_err(&hdev->dev, "failed U1_SP_BTN (%d)\n", ret);
+			goto exit;
+		}
+		pri_data->has_sp = 1;
+	}
+	pri_data->max_fingers = 5;
+exit:
+	return ret;
+}
 
-	devInfo.x_max =
-		(devInfo.resolution << 2) * (devInfo.sen_line_num_x - 1);
-	devInfo.y_max =
-		(devInfo.resolution << 2) * (devInfo.sen_line_num_y - 1);
+static int T4_init(struct hid_device *hdev, struct alps_dev *pri_data)
+{
+	int ret;
+	u8 tmp, sen_line_num_x, sen_line_num_y;
+
+	ret = t4_read_write_register(hdev, T4_PRM_ID_CONFIG_3, &tmp, 0, true);
+	if (ret < 0) {
+		dev_err(&hdev->dev, "failed T4_PRM_ID_CONFIG_3 (%d)\n", ret);
+		goto exit;
+	}
+	sen_line_num_x = 16 + ((tmp & 0x0F)  | (tmp & 0x08 ? 0xF0 : 0));
+	sen_line_num_y = 12 + (((tmp & 0xF0) >> 4)  | (tmp & 0x80 ? 0xF0 : 0));
+
+	pri_data->x_max = sen_line_num_x * T4_COUNT_PER_ELECTRODE;
+	pri_data->x_min = T4_COUNT_PER_ELECTRODE;
+	pri_data->y_max = sen_line_num_y * T4_COUNT_PER_ELECTRODE;
+	pri_data->y_min = T4_COUNT_PER_ELECTRODE;
+	pri_data->x_active_len_mm = pri_data->y_active_len_mm = 0;
+	pri_data->btn_cnt = 1;
+
+	ret = t4_read_write_register(hdev, PRM_SYS_CONFIG_1, &tmp, 0, true);
+	if (ret < 0) {
+		dev_err(&hdev->dev, "failed PRM_SYS_CONFIG_1 (%d)\n", ret);
+		goto exit;
+	}
+	tmp |= 0x02;
+	ret = t4_read_write_register(hdev, PRM_SYS_CONFIG_1, NULL, tmp, false);
+	if (ret < 0) {
+		dev_err(&hdev->dev, "failed PRM_SYS_CONFIG_1 (%d)\n", ret);
+		goto exit;
+	}
+
+	ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_1,
+					NULL, T4_I2C_ABS, false);
+	if (ret < 0) {
+		dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_1 (%d)\n", ret);
+		goto exit;
+	}
+
+	ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_4, NULL,
+				T4_FEEDCFG4_ADVANCED_ABS_ENABLE, false);
+	if (ret < 0) {
+		dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_4 (%d)\n", ret);
+		goto exit;
+	}
+	pri_data->max_fingers = 5;
+	pri_data->has_sp = 0;
+exit:
+	return ret;
+}
+
+static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi)
+{
+	struct alps_dev *data = hid_get_drvdata(hdev);
+	struct input_dev *input = hi->input, *input2;
+	int ret;
+	int res_x, res_y, i;
+
+	data->input = input;
+
+	hid_dbg(hdev, "Opening low level driver\n");
+	ret = hid_hw_open(hdev);
+	if (ret)
+		return ret;
+
+	/* Allow incoming hid reports */
+	hid_device_io_start(hdev);
+	switch (data->dev_type) {
+	case T4:
+		ret = T4_init(hdev, data);
+		break;
+	case U1:
+		ret = u1_init(hdev, data);
+		break;
+	default:
+		break;
+	}
+
+	if (ret)
+		goto exit;
 
 	__set_bit(EV_ABS, input->evbit);
-	input_set_abs_params(input, ABS_MT_POSITION_X, 1, devInfo.x_max, 0, 0);
-	input_set_abs_params(input, ABS_MT_POSITION_Y, 1, devInfo.y_max, 0, 0);
+	input_set_abs_params(input, ABS_MT_POSITION_X,
+						data->x_min, data->x_max, 0, 0);
+	input_set_abs_params(input, ABS_MT_POSITION_Y,
+						data->y_min, data->y_max, 0, 0);
 
-	if (devInfo.x_active_len_mm && devInfo.y_active_len_mm) {
-		res_x = (devInfo.x_max - 1) / devInfo.x_active_len_mm;
-		res_y = (devInfo.y_max - 1) / devInfo.y_active_len_mm;
+	if (data->x_active_len_mm && data->y_active_len_mm) {
+		res_x = (data->x_max - 1) / data->x_active_len_mm;
+		res_y = (data->y_max - 1) / data->y_active_len_mm;
 
 		input_abs_set_res(input, ABS_MT_POSITION_X, res_x);
 		input_abs_set_res(input, ABS_MT_POSITION_Y, res_y);
@@ -364,49 +686,25 @@ static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi)
 
 	input_set_abs_params(input, ABS_MT_PRESSURE, 0, 64, 0, 0);
 
-	input_mt_init_slots(input, MAX_TOUCHES, INPUT_MT_POINTER);
+	input_mt_init_slots(input, data->max_fingers, INPUT_MT_POINTER);
 
 	__set_bit(EV_KEY, input->evbit);
-	if ((devInfo.btn_info & 0x0F) == (devInfo.btn_info & 0xF0) >> 4) {
-		devInfo.btn_cnt = (devInfo.btn_info & 0x0F);
-	} else {
-		/* Button pad */
-		devInfo.btn_cnt = 1;
+
+	if (data->btn_cnt == 1)
 		__set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
-	}
 
-	for (i = 0; i < devInfo.btn_cnt; i++)
+	for (i = 0; i < data->btn_cnt; i++)
 		__set_bit(BTN_LEFT + i, input->keybit);
 
-
 	/* Stick device initialization */
-	if (devInfo.dev_type & U1_DEVTYPE_SP_SUPPORT) {
-
+	if (data->has_sp) {
 		input2 = input_allocate_device();
 		if (!input2) {
-			ret = -ENOMEM;
-			goto exit;
-		}
-
-		data->input2 = input2;
-
-		devInfo.dev_ctrl |= U1_SP_ABS_MODE;
-		ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
-			NULL, devInfo.dev_ctrl, false);
-		if (ret < 0) {
-			dev_err(&hdev->dev, "failed SP mode (%d)\n", ret);
-			input_free_device(input2);
-			goto exit;
-		}
-
-		ret = u1_read_write_register(hdev, ADDRESS_U1_SP_BTN,
-			&devInfo.sp_btn_info, 0, true);
-		if (ret < 0) {
-			dev_err(&hdev->dev, "failed U1_SP_BTN (%d)\n", ret);
 			input_free_device(input2);
 			goto exit;
 		}
 
+		data->input2 = input2;
 		input2->phys = input->phys;
 		input2->name = "DualPoint Stick";
 		input2->id.bustype = BUS_I2C;
@@ -416,8 +714,8 @@ static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi)
 		input2->dev.parent = input->dev.parent;
 
 		__set_bit(EV_KEY, input2->evbit);
-		devInfo.sp_btn_cnt = (devInfo.sp_btn_info & 0x0F);
-		for (i = 0; i < devInfo.sp_btn_cnt; i++)
+		data->sp_btn_cnt = (data->sp_btn_info & 0x0F);
+		for (i = 0; i < data->sp_btn_cnt; i++)
 			__set_bit(BTN_LEFT + i, input2->keybit);
 
 		__set_bit(EV_REL, input2->evbit);
@@ -426,8 +724,7 @@ static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi)
 		__set_bit(INPUT_PROP_POINTER, input2->propbit);
 		__set_bit(INPUT_PROP_POINTING_STICK, input2->propbit);
 
-		ret = input_register_device(data->input2);
-		if (ret) {
+		if (input_register_device(data->input2)) {
 			input_free_device(input2);
 			goto exit;
 		}
@@ -448,10 +745,9 @@ static int alps_input_mapping(struct hid_device *hdev,
 
 static int alps_probe(struct hid_device *hdev, const struct hid_device_id *id)
 {
-	struct u1_dev *data = NULL;
+	struct alps_dev *data = NULL;
 	int ret;
-
-	data = devm_kzalloc(&hdev->dev, sizeof(struct u1_dev), GFP_KERNEL);
+	data = devm_kzalloc(&hdev->dev, sizeof(struct alps_dev), GFP_KERNEL);
 	if (!data)
 		return -ENOMEM;
 
@@ -466,6 +762,18 @@ static int alps_probe(struct hid_device *hdev, const struct hid_device_id *id)
 		return ret;
 	}
 
+	switch (hdev->product) {
+	case HID_DEVICE_ID_ALPS_T4_BTNLESS:
+		data->dev_type = T4;
+		break;
+	case HID_DEVICE_ID_ALPS_U1_DUAL:
+	case HID_DEVICE_ID_ALPS_U1:
+		data->dev_type = U1;
+		break;
+	default:
+		data->dev_type = UNKNOWN;
+	}
+
 	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 	if (ret) {
 		hid_err(hdev, "hw start failed\n");
@@ -483,6 +791,10 @@ static void alps_remove(struct hid_device *hdev)
 static const struct hid_device_id alps_id[] = {
 	{ HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY,
 		USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1_DUAL) },
+	{ HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY,
+		USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1) },
+	{ HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY,
+		USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_T4_BTNLESS) },
 	{ }
 };
 MODULE_DEVICE_TABLE(hid, alps_id);
diff --git a/drivers/hid/hid-asus.c b/drivers/hid/hid-asus.c
index 50c294be8324..1bb7b63b3150 100644
--- a/drivers/hid/hid-asus.c
+++ b/drivers/hid/hid-asus.c
@@ -67,6 +67,7 @@ MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");
 #define QUIRK_USE_KBD_BACKLIGHT		BIT(5)
 #define QUIRK_T100_KEYBOARD		BIT(6)
 #define QUIRK_T100CHI			BIT(7)
+#define QUIRK_G752_KEYBOARD		BIT(8)
 
 #define I2C_KEYBOARD_QUIRKS			(QUIRK_FIX_NOTEBOOK_REPORT | \
 						 QUIRK_NO_INIT_REPORTS | \
@@ -670,6 +671,11 @@ static void asus_remove(struct hid_device *hdev)
 	hid_hw_stop(hdev);
 }
 
+static const __u8 asus_g752_fixed_rdesc[] = {
+        0x19, 0x00,			/*   Usage Minimum (0x00)       */
+        0x2A, 0xFF, 0x00,		/*   Usage Maximum (0xFF)       */
+};
+
 static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 		unsigned int *rsize)
 {
@@ -708,6 +714,27 @@ static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 		rdesc[391] = 0xff;
 		rdesc[402] = 0x00;
 	}
+	if (drvdata->quirks & QUIRK_G752_KEYBOARD &&
+		 *rsize == 75 && rdesc[61] == 0x15 && rdesc[62] == 0x00) {
+		/* report is missing usage mninum and maximum */
+		__u8 *new_rdesc;
+		size_t new_size = *rsize + sizeof(asus_g752_fixed_rdesc);
+
+		new_rdesc = devm_kzalloc(&hdev->dev, new_size, GFP_KERNEL);
+		if (new_rdesc == NULL)
+			return rdesc;
+
+		hid_info(hdev, "Fixing up Asus G752 keyb report descriptor\n");
+		/* copy the valid part */
+		memcpy(new_rdesc, rdesc, 61);
+		/* insert missing part */
+		memcpy(new_rdesc + 61, asus_g752_fixed_rdesc, sizeof(asus_g752_fixed_rdesc));
+		/* copy remaining data */
+		memcpy(new_rdesc + 61 + sizeof(asus_g752_fixed_rdesc), rdesc + 61, *rsize - 61);
+
+		*rsize = new_size;
+		rdesc = new_rdesc;
+	}
 
 	return rdesc;
 }
@@ -718,10 +745,12 @@ static const struct hid_device_id asus_devices[] = {
 	{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
 		USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD), I2C_TOUCHPAD_QUIRKS },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
-		USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1) },
+		USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1), QUIRK_USE_KBD_BACKLIGHT },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
 		USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2), QUIRK_USE_KBD_BACKLIGHT },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
+		USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD3), QUIRK_G752_KEYBOARD },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
 		USB_DEVICE_ID_ASUSTEK_T100_KEYBOARD),
 	  QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_ASUS_AK1D) },
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 330ca983828b..f3fcb836a1f9 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1662,7 +1662,7 @@ static struct bin_attribute dev_bin_attr_report_desc = {
 	.size = HID_MAX_DESCRIPTOR_SIZE,
 };
 
-static struct device_attribute dev_attr_country = {
+static const struct device_attribute dev_attr_country = {
 	.attr = { .name = "country", .mode = 0444 },
 	.show = show_country,
 };
@@ -1889,6 +1889,9 @@ static const struct hid_device_id hid_have_special_driver[] = {
 #endif
 #if IS_ENABLED(CONFIG_HID_ALPS)
 	{ HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1_DUAL) },
+	{ HID_I2C_DEVICE(USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1_DUAL) },
+	{ HID_I2C_DEVICE(USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1) },
+	{ HID_I2C_DEVICE(USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_T4_BTNLESS) },
 #endif
 #if IS_ENABLED(CONFIG_HID_APPLE)
 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
@@ -1979,6 +1982,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
 	{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD3) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_T100_KEYBOARD) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_ASUS_MD_5112) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_ASUS_MD_5110) },
@@ -2329,6 +2333,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb605) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
@@ -3121,4 +3126,3 @@ MODULE_AUTHOR("Andreas Gal");
 MODULE_AUTHOR("Vojtech Pavlik");
 MODULE_AUTHOR("Jiri Kosina");
 MODULE_LICENSE("GPL");
-
diff --git a/drivers/hid/hid-cp2112.c b/drivers/hid/hid-cp2112.c
index 078026f63b6f..68cdc962265b 100644
--- a/drivers/hid/hid-cp2112.c
+++ b/drivers/hid/hid-cp2112.c
@@ -21,7 +21,7 @@
  * Data Sheet:
  *   http://www.silabs.com/Support%20Documents/TechnicalDocs/CP2112.pdf
  * Programming Interface Specification:
- *   http://www.silabs.com/Support%20Documents/TechnicalDocs/AN495.pdf
+ *   https://www.silabs.com/documents/public/application-notes/an495-cp2112-interface-specification.pdf
  */
 
 #include <linux/gpio.h>
@@ -196,6 +196,8 @@ static int cp2112_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
 				 HID_REQ_GET_REPORT);
 	if (ret != CP2112_GPIO_CONFIG_LENGTH) {
 		hid_err(hdev, "error requesting GPIO config: %d\n", ret);
+		if (ret >= 0)
+			ret = -EIO;
 		goto exit;
 	}
 
@@ -205,8 +207,10 @@ static int cp2112_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
 	ret = hid_hw_raw_request(hdev, CP2112_GPIO_CONFIG, buf,
 				 CP2112_GPIO_CONFIG_LENGTH, HID_FEATURE_REPORT,
 				 HID_REQ_SET_REPORT);
-	if (ret < 0) {
+	if (ret != CP2112_GPIO_CONFIG_LENGTH) {
 		hid_err(hdev, "error setting GPIO config: %d\n", ret);
+		if (ret >= 0)
+			ret = -EIO;
 		goto exit;
 	}
 
@@ -214,7 +218,7 @@ static int cp2112_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
 
 exit:
 	mutex_unlock(&dev->lock);
-	return ret < 0 ? ret : -EIO;
+	return ret;
 }
 
 static void cp2112_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
diff --git a/drivers/hid/hid-hyperv.c b/drivers/hid/hid-hyperv.c
index 6039f071fab1..3aa2bb9f0f81 100644
--- a/drivers/hid/hid-hyperv.c
+++ b/drivers/hid/hid-hyperv.c
@@ -313,7 +313,7 @@ static void mousevsc_on_receive(struct hv_device *device,
 
 		break;
 	default:
-		pr_err("unsupported hid msg type - type %d len %d",
+		pr_err("unsupported hid msg type - type %d len %d\n",
 		       hid_msg->header.type, hid_msg->header.size);
 		break;
 	}
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index be2e005c3c51..5da3d6256d25 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -77,6 +77,9 @@
 #define HID_DEVICE_ID_ALPS_U1_DUAL	0x120B
 #define HID_DEVICE_ID_ALPS_U1_DUAL_PTP	0x121F
 #define HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP	0x1220
+#define HID_DEVICE_ID_ALPS_U1		0x1215
+#define HID_DEVICE_ID_ALPS_T4_BTNLESS	0x120C
+
 
 #define USB_VENDOR_ID_AMI		0x046b
 #define USB_DEVICE_ID_AMI_VIRT_KEYBOARD_AND_MOUSE	0xff10
@@ -182,6 +185,7 @@
 #define USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD	0x0101
 #define USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1 0x1854
 #define USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2 0x1837
+#define USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD3 0x1822
 
 #define USB_VENDOR_ID_ATEN		0x0557
 #define USB_DEVICE_ID_ATEN_UC100KM	0x2004
@@ -509,6 +513,9 @@
 #define USB_DEVICE_ID_GYRATION_REMOTE_2 0x0003
 #define USB_DEVICE_ID_GYRATION_REMOTE_3 0x0008
 
+#define I2C_VENDOR_ID_HANTICK		0x0911
+#define I2C_PRODUCT_ID_HANTICK_5288	0x5288
+
 #define USB_VENDOR_ID_HANWANG		0x0b57
 #define USB_DEVICE_ID_HANWANG_TABLET_FIRST	0x5000
 #define USB_DEVICE_ID_HANWANG_TABLET_LAST	0x8fff
@@ -729,6 +736,9 @@
 #define USB_DEVICE_ID_MCC_PMD1024LS	0x0076
 #define USB_DEVICE_ID_MCC_PMD1208LS	0x007a
 
+#define USB_VENDOR_ID_MCS		0x16d0
+#define USB_DEVICE_ID_MCS_GAMEPADBLOCK	0x0bcc
+
 #define USB_VENDOR_ID_MGE		0x0463
 #define USB_DEVICE_ID_MGE_UPS		0xffff
 #define USB_DEVICE_ID_MGE_UPS1		0x0001
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 199f6a01fc62..04d01b57d94c 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -797,6 +797,15 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
 			map_key_clear(BTN_STYLUS);
 			break;
 
+		case 0x45: /* ERASER */
+			/*
+			 * This event is reported when eraser tip touches the surface.
+			 * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when
+			 * tool gets in proximity.
+			 */
+			map_key_clear(BTN_TOUCH);
+			break;
+
 		case 0x46: /* TabletPick */
 		case 0x5a: /* SecondaryBarrelSwitch */
 			map_key_clear(BTN_STYLUS2);
diff --git a/drivers/hid/hid-lg.c b/drivers/hid/hid-lg.c
index 52026dc94d5c..596227ddb6e0 100644
--- a/drivers/hid/hid-lg.c
+++ b/drivers/hid/hid-lg.c
@@ -756,7 +756,9 @@ static int lg_probe(struct hid_device *hdev, const struct hid_device_id *id)
 
 	/* Setup wireless link with Logitech Wii wheel */
 	if (hdev->product == USB_DEVICE_ID_LOGITECH_WII_WHEEL) {
-		const unsigned char cbuf[] = { 0x00, 0xAF,  0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+		static const unsigned char cbuf[] = {
+			0x00, 0xAF,  0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+		};
 		u8 *buf = kmemdup(cbuf, sizeof(cbuf), GFP_KERNEL);
 
 		if (!buf) {
diff --git a/drivers/hid/hid-lg4ff.c b/drivers/hid/hid-lg4ff.c
index 1fc12e357035..512d67e1aae3 100644
--- a/drivers/hid/hid-lg4ff.c
+++ b/drivers/hid/hid-lg4ff.c
@@ -474,9 +474,7 @@ static int lg4ff_play(struct input_dev *dev, void *data, struct ff_effect *effec
 static void lg4ff_set_autocenter_default(struct input_dev *dev, u16 magnitude)
 {
 	struct hid_device *hid = input_get_drvdata(dev);
-	struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
-	struct hid_report *report = list_entry(report_list->next, struct hid_report, list);
-	s32 *value = report->field[0]->value;
+	s32 *value;
 	u32 expand_a, expand_b;
 	struct lg4ff_device_entry *entry;
 	struct lg_drv_data *drv_data;
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 9e8c4d2ba11d..65ea23be9677 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -43,6 +43,7 @@
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/input/mt.h>
+#include <linux/jiffies.h>
 #include <linux/string.h>
 #include <linux/timer.h>
 
@@ -112,6 +113,7 @@ struct mt_device {
 	struct mt_slot curdata;	/* placeholder of incoming data */
 	struct mt_class mtclass;	/* our mt device class */
 	struct timer_list release_timer;	/* to release sticky fingers */
+	struct hid_device *hdev;	/* hid_device we're attached to */
 	struct mt_fields *fields;	/* temporary placeholder for storing the
 					   multitouch fields */
 	unsigned long mt_io_flags;	/* mt flags (MT_IO_FLAGS_*) */
@@ -136,6 +138,9 @@ struct mt_device {
 	bool serial_maybe;	/* need to check for serial protocol */
 	bool curvalid;		/* is the current contact valid? */
 	unsigned mt_flags;	/* flags to pass to input-mt */
+	__s32 dev_time;		/* the scan time provided by the device */
+	unsigned long jiffies;	/* the frame's jiffies */
+	int timestamp;		/* the timestamp to be sent */
 };
 
 static void mt_post_parse_default_settings(struct mt_device *td);
@@ -177,6 +182,12 @@ static void mt_post_parse(struct mt_device *td);
 #define MT_DEFAULT_MAXCONTACT	10
 #define MT_MAX_MAXCONTACT	250
 
+/*
+ * Resync device and local timestamps after that many microseconds without
+ * receiving data.
+ */
+#define MAX_TIMESTAMP_INTERVAL	1000000
+
 #define MT_USB_DEVICE(v, p)	HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
 #define MT_BT_DEVICE(v, p)	HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
 
@@ -583,6 +594,12 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 				cls->sn_pressure);
 			mt_store_field(usage, td, hi);
 			return 1;
+		case HID_DG_SCANTIME:
+			hid_map_usage(hi, usage, bit, max,
+				EV_MSC, MSC_TIMESTAMP);
+			input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP);
+			mt_store_field(usage, td, hi);
+			return 1;
 		case HID_DG_CONTACTCOUNT:
 			/* Ignore if indexes are out of bounds. */
 			if (field->index >= field->report->maxfield ||
@@ -718,6 +735,7 @@ static void mt_complete_slot(struct mt_device *td, struct input_dev *input)
 static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
 {
 	input_mt_sync_frame(input);
+	input_event(input, EV_MSC, MSC_TIMESTAMP, td->timestamp);
 	input_sync(input);
 	td->num_received = 0;
 	if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags))
@@ -727,6 +745,28 @@ static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
 	clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
 }
 
+static int mt_compute_timestamp(struct mt_device *td, struct hid_field *field,
+		__s32 value)
+{
+	long delta = value - td->dev_time;
+	unsigned long jdelta = jiffies_to_usecs(jiffies - td->jiffies);
+
+	td->jiffies = jiffies;
+	td->dev_time = value;
+
+	if (delta < 0)
+		delta += field->logical_maximum;
+
+	/* HID_DG_SCANTIME is expressed in 100us, we want it in us. */
+	delta *= 100;
+
+	if (jdelta > MAX_TIMESTAMP_INTERVAL)
+		/* No data received for a while, resync the timestamp. */
+		return 0;
+	else
+		return td->timestamp + delta;
+}
+
 static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
 				struct hid_usage *usage, __s32 value)
 {
@@ -787,6 +827,9 @@ static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field,
 		case HID_DG_HEIGHT:
 			td->curdata.h = value;
 			break;
+		case HID_DG_SCANTIME:
+			td->timestamp = mt_compute_timestamp(td, field, value);
+			break;
 		case HID_DG_CONTACTCOUNT:
 			break;
 		case HID_DG_TOUCH:
@@ -1246,10 +1289,10 @@ static void mt_release_contacts(struct hid_device *hid)
 	td->num_received = 0;
 }
 
-static void mt_expired_timeout(unsigned long arg)
+static void mt_expired_timeout(struct timer_list *t)
 {
-	struct hid_device *hdev = (void *)arg;
-	struct mt_device *td = hid_get_drvdata(hdev);
+	struct mt_device *td = from_timer(td, t, release_timer);
+	struct hid_device *hdev = td->hdev;
 
 	/*
 	 * An input report came in just before we release the sticky fingers,
@@ -1280,6 +1323,7 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
 		dev_err(&hdev->dev, "cannot allocate multitouch data\n");
 		return -ENOMEM;
 	}
+	td->hdev = hdev;
 	td->mtclass = *mtclass;
 	td->inputmode = -1;
 	td->maxcontact_report_id = -1;
@@ -1331,7 +1375,7 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
 	 */
 	hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
 
-	setup_timer(&td->release_timer, mt_expired_timeout, (long)hdev);
+	timer_setup(&td->release_timer, mt_expired_timeout, 0);
 
 	ret = hid_parse(hdev);
 	if (ret != 0)
diff --git a/drivers/hid/hid-rmi.c b/drivers/hid/hid-rmi.c
index ef241d66562e..0f43c4292685 100644
--- a/drivers/hid/hid-rmi.c
+++ b/drivers/hid/hid-rmi.c
@@ -368,6 +368,11 @@ static int rmi_check_sanity(struct hid_device *hdev, u8 *data, int size)
 static int rmi_raw_event(struct hid_device *hdev,
 		struct hid_report *report, u8 *data, int size)
 {
+	struct rmi_data *hdata = hid_get_drvdata(hdev);
+
+	if (!(hdata->device_flags & RMI_DEVICE))
+		return 0;
+
 	size = rmi_check_sanity(hdev, data, size);
 	if (size < 2)
 		return 0;
@@ -713,9 +718,11 @@ static void rmi_remove(struct hid_device *hdev)
 {
 	struct rmi_data *hdata = hid_get_drvdata(hdev);
 
-	clear_bit(RMI_STARTED, &hdata->flags);
-	cancel_work_sync(&hdata->reset_work);
-	rmi_unregister_transport_device(&hdata->xport);
+	if (hdata->device_flags & RMI_DEVICE) {
+		clear_bit(RMI_STARTED, &hdata->flags);
+		cancel_work_sync(&hdata->reset_work);
+		rmi_unregister_transport_device(&hdata->xport);
+	}
 
 	hid_hw_stop(hdev);
 }
diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c
index d03203a82e8f..b9dc3ac4d4aa 100644
--- a/drivers/hid/hid-sony.c
+++ b/drivers/hid/hid-sony.c
@@ -1439,10 +1439,16 @@ static int sixaxis_set_operational_usb(struct hid_device *hdev)
 		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;
+	/*
+	 * But the USB interrupt would cause SHANWAN controllers to
+	 * start rumbling non-stop.
+	 */
+	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;
+		}
 	}
 
 out:
diff --git a/drivers/hid/hid-tmff.c b/drivers/hid/hid-tmff.c
index b83376077d72..bea8def64f43 100644
--- a/drivers/hid/hid-tmff.c
+++ b/drivers/hid/hid-tmff.c
@@ -242,6 +242,8 @@ static const struct hid_device_id tm_devices[] = {
 		.driver_data = (unsigned long)ff_rumble },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324),   /* Dual Trigger 3-in-1 (PS3 Mode) */
 		.driver_data = (unsigned long)ff_rumble },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb605),   /* NASCAR PRO FF2 Wheel */
+		.driver_data = (unsigned long)ff_joystick },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651),	/* FGT Rumble Force Wheel */
 		.driver_data = (unsigned long)ff_rumble },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653),	/* RGT Force Feedback CLUTCH Raging Wheel */
diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c
index 9145c2129a96..e054ee43c1e2 100644
--- a/drivers/hid/i2c-hid/i2c-hid.c
+++ b/drivers/hid/i2c-hid/i2c-hid.c
@@ -46,6 +46,7 @@
 
 /* quirks to control the device */
 #define I2C_HID_QUIRK_SET_PWR_WAKEUP_DEV	BIT(0)
+#define I2C_HID_QUIRK_NO_IRQ_AFTER_RESET	BIT(1)
 
 /* flags */
 #define I2C_HID_STARTED		0
@@ -168,6 +169,8 @@ static const struct i2c_hid_quirks {
 		I2C_HID_QUIRK_SET_PWR_WAKEUP_DEV },
 	{ USB_VENDOR_ID_WEIDA, USB_DEVICE_ID_WEIDA_8755,
 		I2C_HID_QUIRK_SET_PWR_WAKEUP_DEV },
+	{ I2C_VENDOR_ID_HANTICK, I2C_PRODUCT_ID_HANTICK_5288,
+		I2C_HID_QUIRK_NO_IRQ_AFTER_RESET },
 	{ 0, 0 }
 };
 
@@ -252,7 +255,9 @@ static int __i2c_hid_command(struct i2c_client *client,
 
 	ret = 0;
 
-	if (wait) {
+	if (wait && (ihid->quirks & I2C_HID_QUIRK_NO_IRQ_AFTER_RESET)) {
+		msleep(100);
+	} else if (wait) {
 		i2c_hid_dbg(ihid, "%s: waiting...\n", __func__);
 		if (!wait_event_timeout(ihid->wait,
 				!test_bit(I2C_HID_RESET_PENDING, &ihid->flags),
diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index 045b5da9b992..640dfb937c69 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -101,10 +101,10 @@ static int hid_start_in(struct hid_device *hid)
 }
 
 /* I/O retry timer routine */
-static void hid_retry_timeout(unsigned long _hid)
+static void hid_retry_timeout(struct timer_list *t)
 {
-	struct hid_device *hid = (struct hid_device *) _hid;
-	struct usbhid_device *usbhid = hid->driver_data;
+	struct usbhid_device *usbhid = from_timer(usbhid, t, io_retry);
+	struct hid_device *hid = usbhid->hid;
 
 	dev_dbg(&usbhid->intf->dev, "retrying intr urb\n");
 	if (hid_start_in(hid))
@@ -1373,7 +1373,7 @@ static int usbhid_probe(struct usb_interface *intf, const struct usb_device_id *
 
 	init_waitqueue_head(&usbhid->wait);
 	INIT_WORK(&usbhid->reset_work, hid_reset);
-	setup_timer(&usbhid->io_retry, hid_retry_timeout, (unsigned long) hid);
+	timer_setup(&usbhid->io_retry, hid_retry_timeout, 0);
 	spin_lock_init(&usbhid->lock);
 
 	ret = hid_add_device(hid);
diff --git a/drivers/hid/usbhid/hid-quirks.c b/drivers/hid/usbhid/hid-quirks.c
index f489a5cfcb48..331f7f34ec14 100644
--- a/drivers/hid/usbhid/hid-quirks.c
+++ b/drivers/hid/usbhid/hid-quirks.c
@@ -170,6 +170,7 @@ static const struct hid_blacklist {
 	{ USB_VENDOR_ID_DRACAL_RAPHNET, USB_DEVICE_ID_RAPHNET_2NES2SNES, HID_QUIRK_MULTI_INPUT },
 	{ USB_VENDOR_ID_DRACAL_RAPHNET, USB_DEVICE_ID_RAPHNET_4NES4SNES, HID_QUIRK_MULTI_INPUT },
 	{ USB_VENDOR_ID_INNOMEDIA, USB_DEVICE_ID_INNEX_GENESIS_ATARI, HID_QUIRK_MULTI_INPUT },
+	{ USB_VENDOR_ID_MCS, USB_DEVICE_ID_MCS_GAMEPADBLOCK, HID_QUIRK_MULTI_INPUT },
 
 	{ 0, 0 }
 };
diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c
index 906e654fb0ba..ee71ad9b6cc1 100644
--- a/drivers/hid/wacom_sys.c
+++ b/drivers/hid/wacom_sys.c
@@ -196,6 +196,13 @@ static void wacom_feature_mapping(struct hid_device *hdev,
 		kfree(data);
 		break;
 	}
+
+	if (hdev->vendor == USB_VENDOR_ID_WACOM &&
+	    hdev->product == 0x4200 /* Dell Canvas 27 */ &&
+	    field->application == HID_UP_MSVENDOR) {
+		wacom->wacom_wac.mode_report = field->report->id;
+		wacom->wacom_wac.mode_value = 2;
+	}
 }
 
 /*
diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c
index aa692e28b2cd..16af6886e828 100644
--- a/drivers/hid/wacom_wac.c
+++ b/drivers/hid/wacom_wac.c
@@ -2140,6 +2140,12 @@ static void wacom_wac_pen_event(struct hid_device *hdev, struct hid_field *field
 	case HID_DG_TIPSWITCH:
 		wacom_wac->hid_data.tipswitch |= value;
 		return;
+	case HID_DG_BARRELSWITCH:
+		wacom_wac->hid_data.barrelswitch = value;
+		return;
+	case HID_DG_BARRELSWITCH2:
+		wacom_wac->hid_data.barrelswitch2 = value;
+		return;
 	case HID_DG_TOOLSERIALNUMBER:
 		if (value) {
 			wacom_wac->serial[0] = (wacom_wac->serial[0] & ~0xFFFFFFFFULL);
@@ -2217,11 +2223,11 @@ static void wacom_wac_pen_event(struct hid_device *hdev, struct hid_field *field
 	if (!usage->type || delay_pen_events(wacom_wac))
 		return;
 
-	/* send pen events only when the pen is in/entering/leaving proximity */
-	if (!wacom_wac->hid_data.inrange_state && !wacom_wac->tool[0])
-		return;
-
-	input_event(input, usage->type, usage->code, value);
+	/* send pen events only when the pen is in range */
+	if (wacom_wac->hid_data.inrange_state)
+		input_event(input, usage->type, usage->code, value);
+	else if (wacom_wac->shared->stylus_in_proximity && !wacom_wac->hid_data.sense_state)
+		input_event(input, usage->type, usage->code, 0);
 }
 
 static void wacom_wac_pen_pre_report(struct hid_device *hdev,
@@ -2236,11 +2242,11 @@ static void wacom_wac_pen_report(struct hid_device *hdev,
 	struct wacom *wacom = hid_get_drvdata(hdev);
 	struct wacom_wac *wacom_wac = &wacom->wacom_wac;
 	struct input_dev *input = wacom_wac->pen_input;
-	bool prox = wacom_wac->hid_data.inrange_state;
-	bool range = wacom_wac->hid_data.sense_state;
+	bool range = wacom_wac->hid_data.inrange_state;
+	bool sense = wacom_wac->hid_data.sense_state;
 
-	if (!wacom_wac->tool[0] && prox) { /* first in prox */
-		/* Going into proximity select tool */
+	if (!wacom_wac->tool[0] && range) { /* first in range */
+		/* Going into range select tool */
 		if (wacom_wac->hid_data.invert_state)
 			wacom_wac->tool[0] = BTN_TOOL_RUBBER;
 		else if (wacom_wac->id[0])
@@ -2250,10 +2256,16 @@ static void wacom_wac_pen_report(struct hid_device *hdev,
 	}
 
 	/* keep pen state for touch events */
-	wacom_wac->shared->stylus_in_proximity = range;
+	wacom_wac->shared->stylus_in_proximity = sense;
 
 	if (!delay_pen_events(wacom_wac) && wacom_wac->tool[0]) {
 		int id = wacom_wac->id[0];
+		int sw_state = wacom_wac->hid_data.barrelswitch |
+			       (wacom_wac->hid_data.barrelswitch2 << 1);
+
+		input_report_key(input, BTN_STYLUS, sw_state == 1);
+		input_report_key(input, BTN_STYLUS2, sw_state == 2);
+		input_report_key(input, BTN_STYLUS3, sw_state == 3);
 
 		/*
 		 * Non-USI EMR tools should have their IDs mangled to
@@ -2269,10 +2281,10 @@ static void wacom_wac_pen_report(struct hid_device *hdev,
 		 */
 		input_report_key(input, BTN_TOUCH,
 				wacom_wac->hid_data.tipswitch);
-		input_report_key(input, wacom_wac->tool[0], prox);
+		input_report_key(input, wacom_wac->tool[0], sense);
 		if (wacom_wac->serial[0]) {
 			input_event(input, EV_MSC, MSC_SERIAL, wacom_wac->serial[0]);
-			input_report_abs(input, ABS_MISC, prox ? id : 0);
+			input_report_abs(input, ABS_MISC, sense ? id : 0);
 		}
 
 		wacom_wac->hid_data.tipswitch = false;
@@ -2280,7 +2292,7 @@ static void wacom_wac_pen_report(struct hid_device *hdev,
 		input_sync(input);
 	}
 
-	if (!prox) {
+	if (!sense) {
 		wacom_wac->tool[0] = 0;
 		wacom_wac->id[0] = 0;
 		wacom_wac->serial[0] = 0;
@@ -3300,9 +3312,11 @@ int wacom_setup_pen_input_capabilities(struct input_dev *input_dev,
 	else
 		__set_bit(INPUT_PROP_POINTER, input_dev->propbit);
 
-	if (features->type == HID_GENERIC)
-		/* setup has already been done */
+	if (features->type == HID_GENERIC) {
+		/* setup has already been done; apply otherwise-undetectible quirks */
+		input_set_capability(input_dev, EV_KEY, BTN_STYLUS3);
 		return 0;
+	}
 
 	__set_bit(BTN_TOUCH, input_dev->keybit);
 	__set_bit(ABS_MISC, input_dev->absbit);
diff --git a/drivers/hid/wacom_wac.h b/drivers/hid/wacom_wac.h
index 8a03654048bf..64d8f014602e 100644
--- a/drivers/hid/wacom_wac.h
+++ b/drivers/hid/wacom_wac.h
@@ -166,6 +166,7 @@
 				 ((f)->physical == HID_DG_PEN) || \
 				 ((f)->application == HID_DG_PEN) || \
 				 ((f)->application == HID_DG_DIGITIZER) || \
+				 ((f)->application == WACOM_HID_WD_PEN) || \
 				 ((f)->application == WACOM_HID_WD_DIGITIZER) || \
 				 ((f)->application == WACOM_HID_G9_PEN) || \
 				 ((f)->application == WACOM_HID_G11_PEN))
@@ -291,6 +292,8 @@ struct hid_data {
 	bool inrange_state;
 	bool invert_state;
 	bool tipswitch;
+	bool barrelswitch;
+	bool barrelswitch2;
 	int x;
 	int y;
 	int pressure;
diff --git a/include/linux/hid.h b/include/linux/hid.h
index ab05a86269dc..d491027a7c22 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -289,6 +289,7 @@ struct hid_item {
 #define HID_DG_DEVICEINDEX	0x000d0053
 #define HID_DG_CONTACTCOUNT	0x000d0054
 #define HID_DG_CONTACTMAX	0x000d0055
+#define HID_DG_SCANTIME		0x000d0056
 #define HID_DG_BUTTONTYPE	0x000d0059
 #define HID_DG_BARRELSWITCH2	0x000d005a
 #define HID_DG_TOOLSERIALNUMBER	0x000d005b
@@ -753,6 +754,7 @@ struct hid_driver {
  * @stop: called on remove
  * @open: called by input layer on open
  * @close: called by input layer on close
+ * @power: request underlying hardware to enter requested power mode
  * @parse: this method is called only once to parse the device data,
  *	   shouldn't allocate anything to not leak memory
  * @request: send report request to device (e.g. feature report)
diff --git a/include/uapi/linux/input-event-codes.h b/include/uapi/linux/input-event-codes.h
index f4058bd4c373..061fa62958a2 100644
--- a/include/uapi/linux/input-event-codes.h
+++ b/include/uapi/linux/input-event-codes.h
@@ -407,6 +407,7 @@
 #define BTN_TOOL_MOUSE		0x146
 #define BTN_TOOL_LENS		0x147
 #define BTN_TOOL_QUINTTAP	0x148	/* Five fingers on trackpad */
+#define BTN_STYLUS3		0x149
 #define BTN_TOUCH		0x14a
 #define BTN_STYLUS		0x14b
 #define BTN_STYLUS2		0x14c