Merge tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linuxgrafted

Pull I3C updates from Alexandre Belloni:
 "A new driver this cycle, for the AMD AXI I3C controller.

  There are also new features such as IBI wakeup support, SETAASA device
  discovery and ACPI support for the the DAA methods, meaning we can now
  communicate with the SPD devices on DDR5 modules.

  New driver:
   - AMD AXI I3C master controller

  Subsystem:
   - I3C Common Command Code (CCC) handling improvements, especially
     around GET CCCs
   - SETAASA device discovery support
   - ACPI support for all existing DAA methods like SETDASA, SETNEWDA as
     well as I2C devices on I3C bus
   - IBI-based wakeup support

  Drivers:
   - dw: SETAASA support
   - mipi-i3c-hci: advertise IBI wakeup capability, AMD_PT I3C
     controller support, PIO queue management support for HCI v1.2
   - renesas: improve suspend to RAM support, add runtime PM support"

* tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (70 commits)
  i3c: dw: reduce do_daa time if there's no client
  i3c: mipi-i3c-hci: Add support for AMD_PT I3C controller
  i3c: mipi-i3c-hci: Add PIO queue management support for HCI v1.2
  i3c: mipi-i3c-hci: Fix missing STAT_IBI_STATUS_THLD in PIO mode
  i3c: dw: rename "pclk" to "apb" to match dt-binding
  i3c: dw: make struct dw_i3c_cmd smaller
  i3c: dw: use COMMAND_PORT_TRANSFER_ARG instead of hardcoding
  i3c: renesas: Don't register devices when ENTDAA times out
  i3c: master: dw-i3c-master: fix OD timing for first broadcast
  i3c: mipi-i3c-hci: Advertise IBI wakeup capability
  i3c: mipi-i3c-hci: Factor out i3c_hci_sysdev()
  i3c: mipi-i3c-hci-pci: Propagate I3C wakeup requirements to PCI
  i3c: master: Reject IBI requests from non-IBI-capable devices
  i3c: master: Add helper to query bus wakeup requirements
  i3c: master: Report wakeup events for IBIs
  i3c: master: Support IBI-based wakeup capability
  i3c: master: Fix potential UAF in i3c_device_match()
  i3c: master: Fix potential UAF in i3c_device_uevent()
  i3c: Make dev->desc locking assumptions explicit
  i3c: master: Fix use-after-free of master->this
  ...

1 files changed, 756 insertions, 0 deletions

diff --git a/drivers/input/touchscreen/mms114.c b/drivers/input/touchscreen/mms114.c
new file mode 100644
index 000000000..27911a9f4
--- /dev/null
+++ b/drivers/input/touchscreen/mms114.c
@@ -0,0 +1,756 @@
+// SPDX-License-Identifier: GPL-2.0
+// Melfas MMS114/MMS136/MMS152 touchscreen device driver
+//
+// Copyright (c) 2012 Samsung Electronics Co., Ltd.
+// Author: Joonyoung Shim <jy0922.shim@samsung.com>
+
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/of.h>
+#include <linux/i2c.h>
+#include <linux/input/mt.h>
+#include <linux/input/touchscreen.h>
+#include <linux/interrupt.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+
+/* Write only registers */
+#define MMS114_MODE_CONTROL		0x01
+#define MMS114_OPERATION_MODE_MASK	0xE
+#define MMS114_ACTIVE			BIT(1)
+
+#define MMS114_XY_RESOLUTION_H		0x02
+#define MMS114_X_RESOLUTION		0x03
+#define MMS114_Y_RESOLUTION		0x04
+#define MMS114_CONTACT_THRESHOLD	0x05
+#define MMS114_MOVING_THRESHOLD		0x06
+
+/* Read only registers */
+#define MMS114_PACKET_SIZE		0x0F
+#define MMS114_INFORMATION		0x10
+#define MMS114_TSP_REV			0xF0
+
+#define MMS152_FW_REV			0xE1
+#define MMS152_COMPAT_GROUP		0xF2
+
+/* Minimum delay time is 50us between stop and start signal of i2c */
+#define MMS114_I2C_DELAY		50
+
+/* 200ms needs after power on */
+#define MMS114_POWERON_DELAY		200
+
+/* Touchscreen absolute values */
+#define MMS114_MAX_AREA			0xff
+
+#define MMS114_MAX_TOUCHKEYS		15
+#define MMS114_MAX_TOUCH		10
+#define MMS114_EVENT_SIZE		8
+#define MMS136_EVENT_SIZE		6
+
+/* Touch type */
+#define MMS114_TYPE_NONE		0
+#define MMS114_TYPE_TOUCHSCREEN		1
+#define MMS114_TYPE_TOUCHKEY		2
+
+struct mms114_data {
+	const struct mms_chip	*chip;
+	struct i2c_client	*client;
+	struct input_dev	*input_dev;
+	struct regulator	*core_reg;
+	struct regulator	*io_reg;
+	struct touchscreen_properties props;
+	unsigned int		contact_threshold;
+	unsigned int		moving_threshold;
+
+	u32 keycodes[MMS114_MAX_TOUCHKEYS];
+	int num_keycodes;
+
+	/* Use cache data for mode control register(write only) */
+	u8			cache_mode_control;
+};
+
+struct mms_chip {
+	const char *name;
+	int event_size;
+	bool has_config_regs;
+	int (*get_version)(struct mms114_data *data);
+};
+
+#define MMS114_FLAGS_ID_MASK		GENMASK(3, 0)
+#define MMS114_FLAGS_TYPE_MASK		GENMASK(6, 5)
+#define MMS114_FLAGS_PRESSED_MASK	BIT(7)
+
+#define MMS114_XY_HI_X_MASK		GENMASK(3, 0)
+#define MMS114_XY_HI_Y_MASK		GENMASK(7, 4)
+
+struct mms114_touch {
+	u8 flags;
+	u8 xy_hi;
+	u8 x_lo;
+	u8 y_lo;
+	u8 width;
+	u8 strength;
+	u8 reserved[2];
+} __packed;
+
+static int __mms114_read_reg(struct mms114_data *data, u8 reg,
+			     unsigned int len, void *val)
+{
+	struct i2c_client *client = data->client;
+	struct i2c_msg xfer[2];
+	u8 buf = reg;
+	int error;
+
+	if (WARN_ON(reg <= MMS114_MODE_CONTROL && reg + len > MMS114_MODE_CONTROL))
+		return -EINVAL;
+
+	/* Write register */
+	xfer[0].addr = client->addr;
+	xfer[0].flags = client->flags & I2C_M_TEN;
+	xfer[0].len = 1;
+	xfer[0].buf = &buf;
+
+	/* Read data */
+	xfer[1].addr = client->addr;
+	xfer[1].flags = (client->flags & I2C_M_TEN) | I2C_M_RD;
+	xfer[1].len = len;
+	xfer[1].buf = val;
+
+	error = i2c_transfer(client->adapter, xfer, 2);
+	if (error != 2) {
+		dev_err(&client->dev,
+			"%s: i2c transfer failed (%d)\n", __func__, error);
+		return error < 0 ? error : -EIO;
+	}
+	usleep_range(MMS114_I2C_DELAY, MMS114_I2C_DELAY + 50);
+
+	return 0;
+}
+
+static int mms114_read_reg(struct mms114_data *data, u8 reg)
+{
+	u8 val;
+	int error;
+
+	if (reg == MMS114_MODE_CONTROL)
+		return data->cache_mode_control;
+
+	error = __mms114_read_reg(data, reg, 1, &val);
+	return error < 0 ? error : val;
+}
+
+static int mms114_write_reg(struct mms114_data *data, u8 reg, u8 val)
+{
+	struct i2c_client *client = data->client;
+	u8 buf[2];
+	int error;
+
+	buf[0] = reg;
+	buf[1] = val;
+
+	error = i2c_master_send(client, buf, 2);
+	if (error != 2) {
+		dev_err(&client->dev,
+			"%s: i2c send failed (%d)\n", __func__, error);
+		return error < 0 ? error : -EIO;
+	}
+	usleep_range(MMS114_I2C_DELAY, MMS114_I2C_DELAY + 50);
+
+	if (reg == MMS114_MODE_CONTROL)
+		data->cache_mode_control = val;
+
+	return 0;
+}
+
+static int mms114_get_version(struct mms114_data *data)
+{
+	struct device *dev = &data->client->dev;
+	u8 buf[6];
+	int error;
+
+	error = __mms114_read_reg(data, MMS114_TSP_REV, 6, buf);
+	if (error)
+		return error;
+
+	dev_info(dev, "TSP Rev: 0x%x, HW Rev: 0x%x, Firmware Ver: 0x%x\n",
+		 buf[0], buf[1], buf[3]);
+	return 0;
+}
+
+static int mms152_get_version(struct mms114_data *data)
+{
+	struct device *dev = &data->client->dev;
+	u8 buf[3];
+	int group;
+	int error;
+
+	error = __mms114_read_reg(data, MMS152_FW_REV, 3, buf);
+	if (error)
+		return error;
+
+	group = i2c_smbus_read_byte_data(data->client, MMS152_COMPAT_GROUP);
+	if (group < 0)
+		return group;
+
+	dev_info(dev, "TSP FW Rev: bootloader 0x%x / core 0x%x / config 0x%x, Compat group: %c\n",
+		 buf[0], buf[1], buf[2], group);
+	return 0;
+}
+
+static int mms345l_get_version(struct mms114_data *data)
+{
+	struct device *dev = &data->client->dev;
+	u8 buf[3];
+	int error;
+
+	error = __mms114_read_reg(data, MMS152_FW_REV, 3, buf);
+	if (error)
+		return error;
+
+	dev_info(dev, "TSP FW Rev: bootloader 0x%x / core 0x%x / config 0x%x\n",
+		 buf[0], buf[1], buf[2]);
+	return 0;
+}
+
+static const struct mms_chip mms114_descriptor = {
+	.name = "MMS114",
+	.event_size = MMS114_EVENT_SIZE,
+	.has_config_regs = true,
+	.get_version = mms114_get_version,
+};
+
+static const struct mms_chip mms134s_descriptor = {
+	.name = "MMS134S",
+	.event_size = MMS136_EVENT_SIZE,
+	.has_config_regs = true,
+	.get_version = mms114_get_version,
+};
+
+static const struct mms_chip mms136_descriptor = {
+	.name = "MMS136",
+	.event_size = MMS136_EVENT_SIZE,
+	.has_config_regs = true,
+	.get_version = mms114_get_version,
+};
+
+static const struct mms_chip mms152_descriptor = {
+	.name = "MMS152",
+	.event_size = MMS114_EVENT_SIZE,
+	.has_config_regs = false,
+	.get_version = mms152_get_version,
+};
+
+static const struct mms_chip mms345l_descriptor = {
+	.name = "MMS345L",
+	.event_size = MMS114_EVENT_SIZE,
+	.has_config_regs = false,
+	.get_version = mms345l_get_version,
+};
+
+static void mms114_process_mt(struct mms114_data *data, struct mms114_touch *touch)
+{
+	struct i2c_client *client = data->client;
+	struct input_dev *input_dev = data->input_dev;
+	unsigned int id = FIELD_GET(MMS114_FLAGS_ID_MASK, touch->flags);
+	unsigned int type = FIELD_GET(MMS114_FLAGS_TYPE_MASK, touch->flags);
+	bool pressed = FIELD_GET(MMS114_FLAGS_PRESSED_MASK, touch->flags);
+	unsigned int x;
+	unsigned int y;
+
+	if (id == 0 || id > MMS114_MAX_TOUCH) {
+		dev_err(&client->dev, "Wrong touch id (%d)\n", id);
+		return;
+	}
+
+	id--;
+	x = touch->x_lo | FIELD_GET(MMS114_XY_HI_X_MASK, touch->xy_hi) << 8;
+	y = touch->y_lo | FIELD_GET(MMS114_XY_HI_Y_MASK, touch->xy_hi) << 8;
+
+	dev_dbg(&client->dev,
+		"id: %d, type: %d, pressed: %d, x: %d, y: %d, width: %d, strength: %d\n",
+		id, type, pressed,
+		x, y, touch->width, touch->strength);
+
+	input_mt_slot(input_dev, id);
+	input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, pressed);
+
+	if (pressed) {
+		touchscreen_report_pos(input_dev, &data->props, x, y, true);
+		input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, touch->width);
+		input_report_abs(input_dev, ABS_MT_PRESSURE, touch->strength);
+	}
+}
+
+static void mms114_process_touchkey(struct mms114_data *data,
+				    struct mms114_touch *touch)
+{
+	struct i2c_client *client = data->client;
+	struct input_dev *input_dev = data->input_dev;
+	unsigned int keycode_id;
+	unsigned int id = FIELD_GET(MMS114_FLAGS_ID_MASK, touch->flags);
+	bool pressed = FIELD_GET(MMS114_FLAGS_PRESSED_MASK, touch->flags);
+
+	if (id == 0)
+		return;
+
+	if (id > data->num_keycodes) {
+		dev_err(&client->dev, "Wrong touch id for touchkey (%d)\n",
+			id);
+		return;
+	}
+
+	keycode_id = id - 1;
+	dev_dbg(&client->dev, "keycode id: %d, pressed: %d\n", keycode_id,
+		pressed);
+
+	input_report_key(input_dev, data->keycodes[keycode_id], pressed);
+}
+
+static irqreturn_t mms114_interrupt(int irq, void *dev_id)
+{
+	struct mms114_data *data = dev_id;
+	struct i2c_client *client = data->client;
+	struct mms114_touch touch[MMS114_MAX_TOUCH];
+	struct mms114_touch *t;
+	int event_size = data->chip->event_size;
+	int packet_size;
+	int touch_size;
+	int index;
+	int error;
+
+	packet_size = mms114_read_reg(data, MMS114_PACKET_SIZE);
+	if (packet_size <= 0)
+		goto out;
+
+	if (packet_size > sizeof(touch)) {
+		dev_err(&client->dev, "Invalid packet size %d (max %zu)\n",
+			packet_size, sizeof(touch));
+		goto out;
+	}
+
+	touch_size = packet_size / event_size;
+
+	error = __mms114_read_reg(data, MMS114_INFORMATION, packet_size, touch);
+	if (error)
+		goto out;
+
+	for (index = 0; index < touch_size; index++) {
+		t = (struct mms114_touch *)((u8 *)touch + index * event_size);
+		unsigned int type = FIELD_GET(MMS114_FLAGS_TYPE_MASK, t->flags);
+
+		switch (type) {
+		case MMS114_TYPE_TOUCHSCREEN:
+			mms114_process_mt(data, t);
+			break;
+
+		case MMS114_TYPE_TOUCHKEY:
+			mms114_process_touchkey(data, t);
+			break;
+
+		default:
+			dev_err(&client->dev, "Wrong touch type (%d)\n",
+				type);
+			break;
+		}
+	}
+
+	input_mt_report_pointer_emulation(data->input_dev, true);
+	input_sync(data->input_dev);
+
+out:
+	return IRQ_HANDLED;
+}
+
+static int mms114_set_active(struct mms114_data *data, bool active)
+{
+	int val;
+
+	val = mms114_read_reg(data, MMS114_MODE_CONTROL);
+	if (val < 0)
+		return val;
+
+	val &= ~MMS114_OPERATION_MODE_MASK;
+
+	/* If active is false, sleep mode */
+	if (active)
+		val |= MMS114_ACTIVE;
+
+	return mms114_write_reg(data, MMS114_MODE_CONTROL, val);
+}
+
+static int mms114_setup_regs(struct mms114_data *data)
+{
+	const struct touchscreen_properties *props = &data->props;
+	int val;
+	int error;
+
+	error = data->chip->get_version(data);
+	if (error)
+		return error;
+
+	if (!data->chip->has_config_regs)
+		return 0;
+
+	error = mms114_set_active(data, true);
+	if (error < 0)
+		return error;
+
+	val = (props->max_x >> 8) & 0xf;
+	val |= ((props->max_y >> 8) & 0xf) << 4;
+	error = mms114_write_reg(data, MMS114_XY_RESOLUTION_H, val);
+	if (error < 0)
+		return error;
+
+	val = props->max_x & 0xff;
+	error = mms114_write_reg(data, MMS114_X_RESOLUTION, val);
+	if (error < 0)
+		return error;
+
+	val = props->max_y & 0xff;
+	error = mms114_write_reg(data, MMS114_Y_RESOLUTION, val);
+	if (error < 0)
+		return error;
+
+	if (data->contact_threshold) {
+		error = mms114_write_reg(data, MMS114_CONTACT_THRESHOLD,
+					 data->contact_threshold);
+		if (error < 0)
+			return error;
+	}
+
+	if (data->moving_threshold) {
+		error = mms114_write_reg(data, MMS114_MOVING_THRESHOLD,
+					 data->moving_threshold);
+		if (error < 0)
+			return error;
+	}
+
+	return 0;
+}
+
+static int mms114_start(struct mms114_data *data)
+{
+	struct i2c_client *client = data->client;
+	int error;
+
+	error = regulator_enable(data->core_reg);
+	if (error) {
+		dev_err(&client->dev, "Failed to enable avdd: %d\n", error);
+		return error;
+	}
+
+	error = regulator_enable(data->io_reg);
+	if (error) {
+		dev_err(&client->dev, "Failed to enable vdd: %d\n", error);
+		regulator_disable(data->core_reg);
+		return error;
+	}
+
+	msleep(MMS114_POWERON_DELAY);
+
+	error = mms114_setup_regs(data);
+	if (error < 0) {
+		regulator_disable(data->io_reg);
+		regulator_disable(data->core_reg);
+		return error;
+	}
+
+	enable_irq(client->irq);
+
+	return 0;
+}
+
+static void mms114_stop(struct mms114_data *data)
+{
+	struct i2c_client *client = data->client;
+	int error;
+
+	disable_irq(client->irq);
+
+	error = regulator_disable(data->io_reg);
+	if (error)
+		dev_warn(&client->dev, "Failed to disable vdd: %d\n", error);
+
+	error = regulator_disable(data->core_reg);
+	if (error)
+		dev_warn(&client->dev, "Failed to disable avdd: %d\n", error);
+}
+
+static int mms114_input_open(struct input_dev *dev)
+{
+	struct mms114_data *data = input_get_drvdata(dev);
+
+	return mms114_start(data);
+}
+
+static void mms114_input_close(struct input_dev *dev)
+{
+	struct mms114_data *data = input_get_drvdata(dev);
+
+	mms114_stop(data);
+}
+
+static int mms114_parse_legacy_bindings(struct mms114_data *data)
+{
+	struct device *dev = &data->client->dev;
+	struct touchscreen_properties *props = &data->props;
+
+	if (device_property_read_u32(dev, "x-size", &props->max_x)) {
+		dev_dbg(dev, "failed to get legacy x-size property\n");
+		return -EINVAL;
+	}
+
+	if (device_property_read_u32(dev, "y-size", &props->max_y)) {
+		dev_dbg(dev, "failed to get legacy y-size property\n");
+		return -EINVAL;
+	}
+
+	device_property_read_u32(dev, "contact-threshold",
+				 &data->contact_threshold);
+	device_property_read_u32(dev, "moving-threshold",
+				 &data->moving_threshold);
+
+	if (device_property_read_bool(dev, "x-invert"))
+		props->invert_x = true;
+	if (device_property_read_bool(dev, "y-invert"))
+		props->invert_y = true;
+
+	props->swap_x_y = false;
+
+	return 0;
+}
+
+static int mms114_probe(struct i2c_client *client)
+{
+	struct mms114_data *data;
+	struct input_dev *input_dev;
+	int error;
+	int i;
+
+	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
+		dev_err(&client->dev, "Not supported I2C adapter\n");
+		return -ENODEV;
+	}
+
+	data = devm_kzalloc(&client->dev, sizeof(struct mms114_data),
+			    GFP_KERNEL);
+	input_dev = devm_input_allocate_device(&client->dev);
+	if (!data || !input_dev) {
+		dev_err(&client->dev, "Failed to allocate memory\n");
+		return -ENOMEM;
+	}
+
+	data->client = client;
+	data->input_dev = input_dev;
+
+	data->chip = i2c_get_match_data(client);
+	if (!data->chip)
+		return -EINVAL;
+
+	data->num_keycodes = device_property_count_u32(&client->dev,
+						       "linux,keycodes");
+	if (data->num_keycodes == -EINVAL) {
+		data->num_keycodes = 0;
+	} else if (data->num_keycodes < 0) {
+		dev_err(&client->dev,
+			"Unable to parse linux,keycodes property: %d\n",
+			data->num_keycodes);
+		return data->num_keycodes;
+	} else if (data->num_keycodes > MMS114_MAX_TOUCHKEYS) {
+		dev_warn(&client->dev,
+			 "Found %d linux,keycodes but max is %d, ignoring the rest\n",
+			 data->num_keycodes, MMS114_MAX_TOUCHKEYS);
+		data->num_keycodes = MMS114_MAX_TOUCHKEYS;
+	}
+
+	if (data->num_keycodes > 0) {
+		error = device_property_read_u32_array(&client->dev,
+						       "linux,keycodes",
+						       data->keycodes,
+						       data->num_keycodes);
+		if (error) {
+			dev_err(&client->dev,
+				"Unable to read linux,keycodes values: %d\n",
+				error);
+			return error;
+		}
+
+		input_dev->keycode = data->keycodes;
+		input_dev->keycodemax = data->num_keycodes;
+		input_dev->keycodesize = sizeof(data->keycodes[0]);
+		for (i = 0; i < data->num_keycodes; i++)
+			input_set_capability(input_dev,
+					     EV_KEY, data->keycodes[i]);
+	}
+
+	input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_X);
+	input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_Y);
+	input_set_abs_params(input_dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
+	input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR,
+			     0, MMS114_MAX_AREA, 0, 0);
+
+	touchscreen_parse_properties(input_dev, true, &data->props);
+	if (!data->props.max_x || !data->props.max_y) {
+		dev_dbg(&client->dev,
+			"missing X/Y size properties, trying legacy bindings\n");
+		error = mms114_parse_legacy_bindings(data);
+		if (error)
+			return error;
+
+		input_set_abs_params(input_dev, ABS_MT_POSITION_X,
+				     0, data->props.max_x, 0, 0);
+		input_set_abs_params(input_dev, ABS_MT_POSITION_Y,
+				     0, data->props.max_y, 0, 0);
+	}
+
+	if (data->chip->has_config_regs) {
+		/*
+		 * The firmware handles movement and pressure fuzz, so
+		 * don't duplicate that in software.
+		 */
+		data->moving_threshold = input_abs_get_fuzz(input_dev,
+							    ABS_MT_POSITION_X);
+		data->contact_threshold = input_abs_get_fuzz(input_dev,
+							     ABS_MT_PRESSURE);
+		input_abs_set_fuzz(input_dev, ABS_MT_POSITION_X, 0);
+		input_abs_set_fuzz(input_dev, ABS_MT_POSITION_Y, 0);
+		input_abs_set_fuzz(input_dev, ABS_MT_PRESSURE, 0);
+	}
+
+	input_dev->name = devm_kasprintf(&client->dev, GFP_KERNEL,
+					 "MELFAS %s Touchscreen",
+					 data->chip->name);
+	if (!input_dev->name)
+		return -ENOMEM;
+
+	input_dev->id.bustype = BUS_I2C;
+	input_dev->dev.parent = &client->dev;
+	input_dev->open = mms114_input_open;
+	input_dev->close = mms114_input_close;
+
+	error = input_mt_init_slots(input_dev, MMS114_MAX_TOUCH,
+				    INPUT_MT_DIRECT);
+	if (error)
+		return error;
+
+	input_set_drvdata(input_dev, data);
+	i2c_set_clientdata(client, data);
+
+	data->core_reg = devm_regulator_get(&client->dev, "avdd");
+	if (IS_ERR(data->core_reg)) {
+		error = PTR_ERR(data->core_reg);
+		dev_err(&client->dev,
+			"Unable to get the Core regulator (%d)\n", error);
+		return error;
+	}
+
+	data->io_reg = devm_regulator_get(&client->dev, "vdd");
+	if (IS_ERR(data->io_reg)) {
+		error = PTR_ERR(data->io_reg);
+		dev_err(&client->dev,
+			"Unable to get the IO regulator (%d)\n", error);
+		return error;
+	}
+
+	error = devm_request_threaded_irq(&client->dev, client->irq,
+					  NULL, mms114_interrupt,
+					  IRQF_ONESHOT | IRQF_NO_AUTOEN,
+					  dev_name(&client->dev), data);
+	if (error) {
+		dev_err(&client->dev, "Failed to register interrupt\n");
+		return error;
+	}
+
+	error = input_register_device(data->input_dev);
+	if (error) {
+		dev_err(&client->dev, "Failed to register input device\n");
+		return error;
+	}
+
+	return 0;
+}
+
+static int mms114_suspend(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct mms114_data *data = i2c_get_clientdata(client);
+	struct input_dev *input_dev = data->input_dev;
+	int id;
+
+	/* Release all touch */
+	for (id = 0; id < MMS114_MAX_TOUCH; id++) {
+		input_mt_slot(input_dev, id);
+		input_mt_report_slot_inactive(input_dev);
+	}
+
+	input_mt_report_pointer_emulation(input_dev, true);
+	input_sync(input_dev);
+
+	guard(mutex)(&input_dev->mutex);
+
+	if (input_device_enabled(input_dev))
+		mms114_stop(data);
+
+	return 0;
+}
+
+static int mms114_resume(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct mms114_data *data = i2c_get_clientdata(client);
+	struct input_dev *input_dev = data->input_dev;
+	int error;
+
+	guard(mutex)(&input_dev->mutex);
+
+	if (input_device_enabled(input_dev)) {
+		error = mms114_start(data);
+		if (error)
+			return error;
+	}
+
+	return 0;
+}
+
+static DEFINE_SIMPLE_DEV_PM_OPS(mms114_pm_ops, mms114_suspend, mms114_resume);
+
+static const struct i2c_device_id mms114_id[] = {
+	{ .name = "mms114", .driver_data = (kernel_ulong_t)&mms114_descriptor },
+	{ .name = "mms134s", .driver_data = (kernel_ulong_t)&mms134s_descriptor },
+	{ .name = "mms136", .driver_data = (kernel_ulong_t)&mms136_descriptor },
+	{ .name = "mms152", .driver_data = (kernel_ulong_t)&mms152_descriptor },
+	{ .name = "mms345l", .driver_data = (kernel_ulong_t)&mms345l_descriptor },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, mms114_id);
+
+#ifdef CONFIG_OF
+static const struct of_device_id mms114_dt_match[] = {
+	{ .compatible = "melfas,mms114", .data = &mms114_descriptor },
+	{ .compatible = "melfas,mms134s", .data = &mms134s_descriptor },
+	{ .compatible = "melfas,mms136", .data = &mms136_descriptor },
+	{ .compatible = "melfas,mms152", .data = &mms152_descriptor },
+	{ .compatible = "melfas,mms345l", .data = &mms345l_descriptor },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, mms114_dt_match);
+#endif
+
+static struct i2c_driver mms114_driver = {
+	.driver = {
+		.name	= "mms114",
+		.pm	= pm_sleep_ptr(&mms114_pm_ops),
+		.of_match_table = of_match_ptr(mms114_dt_match),
+	},
+	.probe		= mms114_probe,
+	.id_table	= mms114_id,
+};
+
+module_i2c_driver(mms114_driver);
+
+/* Module information */
+MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
+MODULE_DESCRIPTION("MELFAS mms114 Touchscreen driver");
+MODULE_LICENSE("GPL");