diff --git a/Documentation/devicetree/bindings/input/touchscreen/silead_gsl1680.txt b/Documentation/devicetree/bindings/input/touchscreen/silead_gsl1680.txt
new file mode 100644
index 0000000..1112e0d
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/touchscreen/silead_gsl1680.txt
@@ -0,0 +1,36 @@
+* GSL 1680 touchscreen controller
+
+Required properties:
+- compatible		  : "silead,gsl1680"
+- reg			  : I2C slave address of the chip (0x40)
+- interrupt-parent	  : a phandle pointing to the interrupt controller
+			    serving the interrupt for this chip
+- interrupts		  : interrupt specification for the gsl1680 interrupt
+- power-gpios		  : Specification for the pin connected to the gsl1680's
+			    shutdown input. This needs to be driven high to take the
+			    gsl1680 out of its low power state
+- touchscreen-size-x	  : See touchscreen.txt
+- touchscreen-size-y	  : See touchscreen.txt
+
+Optional properties:
+- touchscreen-inverted-x  : See touchscreen.txt
+- touchscreen-inverted-y  : See touchscreen.txt
+- touchscreen-swapped-x-y : See touchscreen.txt
+- silead,max-fingers	  : maximum number of fingers the touchscreen can detect
+
+Example:
+
+i2c@00000000 {
+	gsl1680: touchscreen@40 {
+		compatible = "silead,gsl1680";
+		reg = <0x40>;
+		interrupt-parent = <&pio>;
+		interrupts = <6 11 IRQ_TYPE_EDGE_FALLING>;
+		power-gpios = <&pio 1 3 GPIO_ACTIVE_HIGH>;
+		touchscreen-size-x = <480>;
+		touchscreen-size-y = <800>;
+		touchscreen-inverted-x;
+		touchscreen-swapped-x-y;
+		silead,max-fingers = <5>;
+	};
+};
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index ee02dc7..64e7501 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -1181,4 +1181,17 @@ config TOUCHSCREEN_ROHM_BU21023
 	  To compile this driver as a module, choose M here: the
 	  module will be called bu21023_ts.
 
+config TOUCHSCREEN_SILEAD
+	tristate "Silead I2C touchscreen"
+	depends on I2C
+	help
+	  Say Y here if you have the Silead touchscreen connected to
+	  your system.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called silead.
+
+
 endif
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index 3315882..4166747 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -97,3 +97,4 @@ obj-$(CONFIG_TOUCHSCREEN_TPS6507X)	+= tps6507x-ts.o
 obj-$(CONFIG_TOUCHSCREEN_ZFORCE)	+= zforce_ts.o
 obj-$(CONFIG_TOUCHSCREEN_COLIBRI_VF50)	+= colibri-vf50-ts.o
 obj-$(CONFIG_TOUCHSCREEN_ROHM_BU21023)	+= rohm_bu21023.o
+obj-$(CONFIG_TOUCHSCREEN_SILEAD)	+= silead.o
diff --git a/drivers/input/touchscreen/silead.c b/drivers/input/touchscreen/silead.c
new file mode 100644
index 0000000..52379e1
--- /dev/null
+++ b/drivers/input/touchscreen/silead.c
@@ -0,0 +1,572 @@
+/* -------------------------------------------------------------------------
+ * Copyright (C) 2014-2015, Intel Corporation
+ *
+ * Derived from:
+ *  gslX68X.c
+ *  Copyright (C) 2010-2015, Shanghai Sileadinc Co.Ltd
+ *
+ *  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.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ * -------------------------------------------------------------------------
+ */
+
+#include <asm/unaligned.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/acpi.h>
+#include <linux/interrupt.h>
+#include <linux/gpio/consumer.h>
+#include <linux/delay.h>
+#include <linux/firmware.h>
+#include <linux/input.h>
+#include <linux/input/mt.h>
+#include <linux/input/touchscreen.h>
+#include <linux/pm.h>
+#include <linux/irq.h>
+
+#define SILEAD_TS_NAME "silead_ts"
+
+#define SILEAD_REG_RESET	0xE0
+#define SILEAD_REG_DATA		0x80
+#define SILEAD_REG_TOUCH_NR	0x80
+#define SILEAD_REG_POWER	0xBC
+#define SILEAD_REG_CLOCK	0xE4
+#define SILEAD_REG_STATUS	0xB0
+#define SILEAD_REG_ID		0xFC
+#define SILEAD_REG_MEM_CHECK	0xB0
+
+#define SILEAD_STATUS_OK	0x5A5A5A5A
+#define SILEAD_TS_DATA_LEN	44
+#define SILEAD_CLOCK		0x04
+
+#define SILEAD_CMD_RESET	0x88
+#define SILEAD_CMD_START	0x00
+
+#define SILEAD_POINT_DATA_LEN	0x04
+#define SILEAD_POINT_Y_OFF      0x00
+#define SILEAD_POINT_Y_MSB_OFF	0x01
+#define SILEAD_POINT_X_OFF	0x02
+#define SILEAD_POINT_X_MSB_OFF	0x03
+#define SILEAD_TOUCH_ID_MASK	0xF0
+
+#define SILEAD_CMD_SLEEP_MIN	10000
+#define SILEAD_CMD_SLEEP_MAX	20000
+#define SILEAD_POWER_SLEEP	20
+#define SILEAD_STARTUP_SLEEP	30
+
+#define SILEAD_MAX_FINGERS	10
+
+enum silead_ts_power {
+	SILEAD_POWER_ON  = 1,
+	SILEAD_POWER_OFF = 0
+};
+
+struct silead_ts_data {
+	struct i2c_client *client;
+	struct gpio_desc *gpio_power;
+	struct input_dev *input;
+	char fw_name[64];
+	struct touchscreen_properties prop;
+	u32 max_fingers;
+	u32 chip_id;
+	struct input_mt_pos pos[SILEAD_MAX_FINGERS];
+	int slots[SILEAD_MAX_FINGERS];
+	int id[SILEAD_MAX_FINGERS];
+};
+
+struct silead_fw_data {
+	u32 offset;
+	u32 val;
+};
+
+static int silead_ts_request_input_dev(struct silead_ts_data *data)
+{
+	struct device *dev = &data->client->dev;
+	int error;
+
+	data->input = devm_input_allocate_device(dev);
+	if (!data->input) {
+		dev_err(dev,
+			"Failed to allocate input device\n");
+		return -ENOMEM;
+	}
+
+	input_set_abs_params(data->input, ABS_MT_POSITION_X, 0, 4095, 0, 0);
+	input_set_abs_params(data->input, ABS_MT_POSITION_Y, 0, 4095, 0, 0);
+	touchscreen_parse_properties(data->input, true, &data->prop);
+
+	input_mt_init_slots(data->input, data->max_fingers,
+			    INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED |
+			    INPUT_MT_TRACK);
+
+	data->input->name = SILEAD_TS_NAME;
+	data->input->phys = "input/ts";
+	data->input->id.bustype = BUS_I2C;
+
+	error = input_register_device(data->input);
+	if (error) {
+		dev_err(dev, "Failed to register input device: %d\n", error);
+		return error;
+	}
+
+	return 0;
+}
+
+static void silead_ts_set_power(struct i2c_client *client,
+				enum silead_ts_power state)
+{
+	struct silead_ts_data *data = i2c_get_clientdata(client);
+
+	if (data->gpio_power) {
+		gpiod_set_value_cansleep(data->gpio_power, state);
+		msleep(SILEAD_POWER_SLEEP);
+	}
+}
+
+static void silead_ts_read_data(struct i2c_client *client)
+{
+	struct silead_ts_data *data = i2c_get_clientdata(client);
+	struct input_dev *input = data->input;
+	struct device *dev = &client->dev;
+	u8 *bufp, buf[SILEAD_TS_DATA_LEN];
+	int touch_nr, error, i;
+
+	error = i2c_smbus_read_i2c_block_data(client, SILEAD_REG_DATA,
+					      SILEAD_TS_DATA_LEN, buf);
+	if (error < 0) {
+		dev_err(dev, "Data read error %d\n", error);
+		return;
+	}
+
+	touch_nr = buf[0];
+	if (touch_nr < 0)
+		return;
+
+	if (touch_nr > data->max_fingers) {
+		dev_warn(dev, "More touches reported then supported %d > %d\n",
+			 touch_nr, data->max_fingers);
+		touch_nr = data->max_fingers;
+	}
+
+	bufp = buf + SILEAD_POINT_DATA_LEN;
+	for (i = 0; i < touch_nr; i++, bufp += SILEAD_POINT_DATA_LEN) {
+		/* Bits 4-7 are the touch id */
+		data->id[i] = (bufp[SILEAD_POINT_X_MSB_OFF] &
+			       SILEAD_TOUCH_ID_MASK) >> 4;
+		touchscreen_set_mt_pos(&data->pos[i], &data->prop,
+			get_unaligned_le16(&bufp[SILEAD_POINT_X_OFF]) & 0xfff,
+			get_unaligned_le16(&bufp[SILEAD_POINT_Y_OFF]) & 0xfff);
+	}
+
+	input_mt_assign_slots(input, data->slots, data->pos, touch_nr, 0);
+
+	for (i = 0; i < touch_nr; i++) {
+		input_mt_slot(input, data->slots[i]);
+		input_mt_report_slot_state(input, MT_TOOL_FINGER, true);
+		input_report_abs(input, ABS_MT_POSITION_X, data->pos[i].x);
+		input_report_abs(input, ABS_MT_POSITION_Y, data->pos[i].y);
+
+		dev_dbg(dev, "x=%d y=%d hw_id=%d sw_id=%d\n", data->pos[i].x,
+			data->pos[i].y, data->id[i], data->slots[i]);
+	}
+
+	input_mt_sync_frame(input);
+	input_sync(input);
+}
+
+static int silead_ts_init(struct i2c_client *client)
+{
+	struct silead_ts_data *data = i2c_get_clientdata(client);
+	int error;
+
+	error = i2c_smbus_write_byte_data(client, SILEAD_REG_RESET,
+					SILEAD_CMD_RESET);
+	if (error)
+		goto i2c_write_err;
+	usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX);
+
+	error = i2c_smbus_write_byte_data(client, SILEAD_REG_TOUCH_NR,
+					data->max_fingers);
+	if (error)
+		goto i2c_write_err;
+	usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX);
+
+	error = i2c_smbus_write_byte_data(client, SILEAD_REG_CLOCK,
+					  SILEAD_CLOCK);
+	if (error)
+		goto i2c_write_err;
+	usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX);
+
+	error = i2c_smbus_write_byte_data(client, SILEAD_REG_RESET,
+					SILEAD_CMD_START);
+	if (error)
+		goto i2c_write_err;
+	usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX);
+
+	return 0;
+
+i2c_write_err:
+	dev_err(&client->dev, "Registers clear error %d\n", error);
+	return error;
+}
+
+static int silead_ts_reset(struct i2c_client *client)
+{
+	int error;
+
+	error = i2c_smbus_write_byte_data(client, SILEAD_REG_RESET,
+					SILEAD_CMD_RESET);
+	if (error)
+		goto i2c_write_err;
+	usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX);
+
+	error = i2c_smbus_write_byte_data(client, SILEAD_REG_CLOCK,
+					  SILEAD_CLOCK);
+	if (error)
+		goto i2c_write_err;
+	usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX);
+
+	error = i2c_smbus_write_byte_data(client, SILEAD_REG_POWER,
+					SILEAD_CMD_START);
+	if (error)
+		goto i2c_write_err;
+	usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX);
+
+	return 0;
+
+i2c_write_err:
+	dev_err(&client->dev, "Chip reset error %d\n", error);
+	return error;
+}
+
+static int silead_ts_startup(struct i2c_client *client)
+{
+	int error;
+
+	error = i2c_smbus_write_byte_data(client, SILEAD_REG_RESET, 0x00);
+	if (error) {
+		dev_err(&client->dev, "Startup error %d\n", error);
+		return error;
+	}
+	msleep(SILEAD_STARTUP_SLEEP);
+
+	return 0;
+}
+
+static int silead_ts_load_fw(struct i2c_client *client)
+{
+	struct device *dev = &client->dev;
+	struct silead_ts_data *data = i2c_get_clientdata(client);
+	unsigned int fw_size, i;
+	const struct firmware *fw;
+	struct silead_fw_data *fw_data;
+	int error;
+
+	dev_dbg(dev, "Firmware file name: %s", data->fw_name);
+
+	error = request_firmware(&fw, data->fw_name, dev);
+	if (error) {
+		dev_err(dev, "Firmware request error %d\n", error);
+		return error;
+	}
+
+	fw_size = fw->size / sizeof(*fw_data);
+	fw_data = (struct silead_fw_data *)fw->data;
+
+	for (i = 0; i < fw_size; i++) {
+		error = i2c_smbus_write_i2c_block_data(client,
+						       fw_data[i].offset,
+						       4,
+						       (u8 *)&fw_data[i].val);
+		if (error) {
+			dev_err(dev, "Firmware load error %d\n", error);
+			goto release_fw_err;
+		}
+	}
+
+	release_firmware(fw);
+	return 0;
+
+release_fw_err:
+	release_firmware(fw);
+	return error;
+}
+
+static u32 silead_ts_get_status(struct i2c_client *client)
+{
+	int error;
+	u32 status;
+
+	error = i2c_smbus_read_i2c_block_data(client, SILEAD_REG_STATUS, 4,
+					    (u8 *)&status);
+	if (error < 0) {
+		dev_err(&client->dev, "Status read error %d\n", error);
+		return error;
+	}
+
+	return le32_to_cpu(status);
+}
+
+static int silead_ts_get_id(struct i2c_client *client)
+{
+	struct silead_ts_data *data = i2c_get_clientdata(client);
+	int error;
+
+	error = i2c_smbus_read_i2c_block_data(client, SILEAD_REG_ID, 4,
+					    (u8 *)&data->chip_id);
+
+	data->chip_id = le32_to_cpu(data->chip_id);
+
+	if (error < 0) {
+		dev_err(&client->dev, "Chip ID read error %d\n", error);
+		return error;
+	}
+
+	return 0;
+}
+
+static int silead_ts_setup(struct i2c_client *client)
+{
+	struct silead_ts_data *data = i2c_get_clientdata(client);
+	struct device *dev = &client->dev;
+	int error;
+	u32 status;
+
+	silead_ts_set_power(client, SILEAD_POWER_OFF);
+	silead_ts_set_power(client, SILEAD_POWER_ON);
+
+	error = silead_ts_get_id(client);
+	if (error)
+		return error;
+	dev_info(dev, "Silead chip ID: 0x%8X", data->chip_id);
+
+	error = silead_ts_init(client);
+	if (error)
+		return error;
+
+	error = silead_ts_reset(client);
+	if (error)
+		return error;
+
+	error = silead_ts_load_fw(client);
+	if (error)
+		return error;
+
+	error = silead_ts_startup(client);
+	if (error)
+		return error;
+
+	status = silead_ts_get_status(client);
+	if (status != SILEAD_STATUS_OK) {
+		dev_err(dev, "Initialization error, status: 0x%X\n", status);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static irqreturn_t silead_ts_threaded_irq_handler(int irq, void *id)
+{
+	struct silead_ts_data *data = id;
+	struct i2c_client *client = data->client;
+
+	silead_ts_read_data(client);
+
+	return IRQ_HANDLED;
+}
+
+static void silead_ts_read_props(struct i2c_client *client)
+{
+	struct silead_ts_data *data = i2c_get_clientdata(client);
+	struct device *dev = &client->dev;
+	const char *str;
+	int error;
+
+	error = device_property_read_u32(dev, "silead,max-fingers",
+					 &data->max_fingers);
+	if (error) {
+		dev_dbg(dev, "Max fingers read error %d\n", error);
+		data->max_fingers = 5; /* Most devices handle up-to 5 fingers */
+	}
+
+	error = device_property_read_string(dev, "touchscreen-fw-name", &str);
+	if (!error)
+		snprintf(data->fw_name, sizeof(data->fw_name), "%s", str);
+	else
+		dev_dbg(dev, "Firmware file name read error. Using default.");
+}
+
+#ifdef CONFIG_ACPI
+static int silead_ts_set_default_fw_name(struct silead_ts_data *data,
+					 const struct i2c_device_id *id)
+{
+	const struct acpi_device_id *acpi_id;
+	struct device *dev = &data->client->dev;
+	int i;
+
+	if (ACPI_HANDLE(dev)) {
+		acpi_id = acpi_match_device(dev->driver->acpi_match_table, dev);
+		if (!acpi_id)
+			return -ENODEV;
+
+		snprintf(data->fw_name, sizeof(data->fw_name), "%s.fw",
+			acpi_id->id);
+
+		for (i = 0; i < strlen(data->fw_name); i++)
+			data->fw_name[i] = tolower(data->fw_name[i]);
+	} else {
+		snprintf(data->fw_name, sizeof(data->fw_name), "%s.fw",
+			id->name);
+	}
+
+	return 0;
+}
+#else
+static int silead_ts_set_default_fw_name(struct silead_ts_data *data,
+					 const struct i2c_device_id *id)
+{
+	snprintf(data->fw_name, sizeof(data->fw_name), "%s.fw", id->name);
+	return 0;
+}
+#endif
+
+static int silead_ts_probe(struct i2c_client *client,
+			   const struct i2c_device_id *id)
+{
+	struct silead_ts_data *data;
+	struct device *dev = &client->dev;
+	int error;
+
+	if (!i2c_check_functionality(client->adapter,
+				     I2C_FUNC_I2C |
+				     I2C_FUNC_SMBUS_READ_I2C_BLOCK |
+				     I2C_FUNC_SMBUS_WRITE_I2C_BLOCK)) {
+		dev_err(dev, "I2C functionality check failed\n");
+		return -ENXIO;
+	}
+
+	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	i2c_set_clientdata(client, data);
+	data->client = client;
+
+	error = silead_ts_set_default_fw_name(data, id);
+	if (error)
+		return error;
+
+	silead_ts_read_props(client);
+
+	/* We must have the IRQ provided by DT or ACPI subsytem */
+	if (client->irq <= 0)
+		return -ENODEV;
+
+	/* Power GPIO pin */
+	data->gpio_power = gpiod_get_optional(dev, "power", GPIOD_OUT_LOW);
+	if (IS_ERR(data->gpio_power)) {
+		if (PTR_ERR(data->gpio_power) != -EPROBE_DEFER)
+			dev_err(dev, "Shutdown GPIO request failed\n");
+		return PTR_ERR(data->gpio_power);
+	}
+
+	error = silead_ts_setup(client);
+	if (error)
+		return error;
+
+	error = silead_ts_request_input_dev(data);
+	if (error)
+		return error;
+
+	error = devm_request_threaded_irq(dev, client->irq, NULL,
+			silead_ts_threaded_irq_handler, IRQF_ONESHOT,
+			client->name, data);
+	if (error) {
+		if (error != -EPROBE_DEFER)
+			dev_err(dev, "IRQ request failed %d\n", error);
+		return error;
+	}
+
+	return 0;
+}
+
+static int __maybe_unused silead_ts_suspend(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+
+	silead_ts_set_power(client, SILEAD_POWER_OFF);
+	return 0;
+}
+
+static int __maybe_unused silead_ts_resume(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	int error, status;
+
+	silead_ts_set_power(client, SILEAD_POWER_ON);
+
+	error = silead_ts_reset(client);
+	if (error)
+		return error;
+
+	error = silead_ts_startup(client);
+	if (error)
+		return error;
+
+	status = silead_ts_get_status(client);
+	if (status != SILEAD_STATUS_OK) {
+		dev_err(dev, "Resume error, status: 0x%02x\n", status);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(silead_ts_pm, silead_ts_suspend, silead_ts_resume);
+
+static const struct i2c_device_id silead_ts_id[] = {
+	{ "gsl1680", 0 },
+	{ "gsl1688", 0 },
+	{ "gsl3670", 0 },
+	{ "gsl3675", 0 },
+	{ "gsl3692", 0 },
+	{ "mssl1680", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, silead_ts_id);
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id silead_ts_acpi_match[] = {
+	{ "GSL1680", 0 },
+	{ "GSL1688", 0 },
+	{ "GSL3670", 0 },
+	{ "GSL3675", 0 },
+	{ "GSL3692", 0 },
+	{ "MSSL1680", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, silead_ts_acpi_match);
+#endif
+
+static struct i2c_driver silead_ts_driver = {
+	.probe = silead_ts_probe,
+	.id_table = silead_ts_id,
+	.driver = {
+		.name = SILEAD_TS_NAME,
+		.owner = THIS_MODULE,
+		.acpi_match_table = ACPI_PTR(silead_ts_acpi_match),
+		.pm = &silead_ts_pm,
+	},
+};
+module_i2c_driver(silead_ts_driver);
+
+MODULE_AUTHOR("Robert Dolca <robert.dolca@intel.com>");
+MODULE_DESCRIPTION("Silead I2C touchscreen driver");
+MODULE_LICENSE("GPL");
