Merge branch 'next' into for-linus

Prepare first round of input updates for 4.3 merge window.

28 files changed, 1115 insertions, 469 deletions

diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index aa2b5f21b89b..059edeb7f04a 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -11,9 +11,9 @@ menuconfig INPUT_TOUCHSCREEN
 
 if INPUT_TOUCHSCREEN
 
-config OF_TOUCHSCREEN
+config TOUCHSCREEN_PROPERTIES
 	def_tristate INPUT
-	depends on INPUT && OF
+	depends on INPUT
 
 config TOUCHSCREEN_88PM860X
 	tristate "Marvell 88PM860x touchscreen"
@@ -118,7 +118,7 @@ config TOUCHSCREEN_ATMEL_MXT
 config TOUCHSCREEN_AUO_PIXCIR
 	tristate "AUO in-cell touchscreen using Pixcir ICs"
 	depends on I2C
-	depends on GPIOLIB
+	depends on GPIOLIB || COMPILE_TEST
 	help
 	  Say Y here if you have a AUO display with in-cell touchscreen
 	  using Pixcir ICs.
@@ -142,7 +142,7 @@ config TOUCHSCREEN_BU21013
 
 config TOUCHSCREEN_CHIPONE_ICN8318
 	tristate "chipone icn8318 touchscreen controller"
-	depends on GPIOLIB
+	depends on GPIOLIB || COMPILE_TEST
 	depends on I2C
 	depends on OF
 	help
@@ -156,7 +156,7 @@ config TOUCHSCREEN_CHIPONE_ICN8318
 config TOUCHSCREEN_CY8CTMG110
 	tristate "cy8ctmg110 touchscreen"
 	depends on I2C
-	depends on GPIOLIB
+	depends on GPIOLIB || COMPILE_TEST
 	help
 	  Say Y here if you have a cy8ctmg110 capacitive touchscreen on
 	  an AAVA device.
@@ -915,10 +915,11 @@ config TOUCHSCREEN_TSC_SERIO
 	  module will be called tsc40.
 
 config TOUCHSCREEN_TSC2005
-        tristate "TSC2005 based touchscreens"
-        depends on SPI_MASTER
-        help
-          Say Y here if you have a TSC2005 based touchscreen.
+	tristate "TSC2005 based touchscreens"
+	depends on SPI_MASTER
+	select REGMAP_SPI
+	help
+	  Say Y here if you have a TSC2005 based touchscreen.
 
 	  If unsure, say N.
 
@@ -992,8 +993,9 @@ config TOUCHSCREEN_SUN4I
 
 config TOUCHSCREEN_SUR40
 	tristate "Samsung SUR40 (Surface 2.0/PixelSense) touchscreen"
-	depends on USB
+	depends on USB && MEDIA_USB_SUPPORT && HAS_DMA
 	select INPUT_POLLDEV
+	select VIDEOBUF2_DMA_SG
 	help
 	  Say Y here if you want support for the Samsung SUR40 touchscreen
 	  (also known as Microsoft Surface 2.0 or Microsoft PixelSense).
@@ -1028,7 +1030,7 @@ config TOUCHSCREEN_TPS6507X
 config TOUCHSCREEN_ZFORCE
 	tristate "Neonode zForce infrared touchscreens"
 	depends on I2C
-	depends on GPIOLIB
+	depends on GPIOLIB || COMPILE_TEST
 	help
 	  Say Y here if you have a touchscreen using the zforce
 	  infraread technology from Neonode.
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index fa3d33bac7fc..c85aae23e7f8 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -6,7 +6,7 @@
 
 wm97xx-ts-y := wm97xx-core.o
 
-obj-$(CONFIG_OF_TOUCHSCREEN)		+= of_touchscreen.o
+obj-$(CONFIG_TOUCHSCREEN_PROPERTIES)	+= of_touchscreen.o
 obj-$(CONFIG_TOUCHSCREEN_88PM860X)	+= 88pm860x-ts.o
 obj-$(CONFIG_TOUCHSCREEN_AD7877)	+= ad7877.o
 obj-$(CONFIG_TOUCHSCREEN_AD7879)	+= ad7879.o
diff --git a/drivers/input/touchscreen/ad7879-i2c.c b/drivers/input/touchscreen/ad7879-i2c.c
index dcf390771549..d66962c5b1c2 100644
--- a/drivers/input/touchscreen/ad7879-i2c.c
+++ b/drivers/input/touchscreen/ad7879-i2c.c
@@ -94,7 +94,6 @@ MODULE_DEVICE_TABLE(i2c, ad7879_id);
 static struct i2c_driver ad7879_i2c_driver = {
 	.driver = {
 		.name	= "ad7879",
-		.owner	= THIS_MODULE,
 		.pm	= &ad7879_pm_ops,
 	},
 	.probe		= ad7879_i2c_probe,
diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
index e4eb8a6c658f..0f5f968592bd 100644
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -1234,7 +1234,8 @@ static const struct ads7846_platform_data *ads7846_probe_dt(struct device *dev)
 	of_property_read_u32(node, "ti,pendown-gpio-debounce",
 			     &pdata->gpio_pendown_debounce);
 
-	pdata->wakeup = of_property_read_bool(node, "linux,wakeup");
+	pdata->wakeup = of_property_read_bool(node, "wakeup-source") ||
+			of_property_read_bool(node, "linux,wakeup");
 
 	pdata->gpio_pendown = of_get_named_gpio(dev->of_node, "pendown-gpio", 0);
 
diff --git a/drivers/input/touchscreen/ar1021_i2c.c b/drivers/input/touchscreen/ar1021_i2c.c
index f0b954d46a25..71b5a634cf6d 100644
--- a/drivers/input/touchscreen/ar1021_i2c.c
+++ b/drivers/input/touchscreen/ar1021_i2c.c
@@ -166,7 +166,6 @@ MODULE_DEVICE_TABLE(of, ar1021_i2c_of_match);
 static struct i2c_driver ar1021_i2c_driver = {
 	.driver	= {
 		.name	= "ar1021_i2c",
-		.owner	= THIS_MODULE,
 		.pm	= &ar1021_i2c_pm,
 		.of_match_table = ar1021_i2c_of_match,
 	},
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index dfc7309e3d38..c5622058c22b 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -22,34 +22,20 @@
 #include <linux/delay.h>
 #include <linux/firmware.h>
 #include <linux/i2c.h>
-#include <linux/i2c/atmel_mxt_ts.h>
+#include <linux/platform_data/atmel_mxt_ts.h>
 #include <linux/input/mt.h>
 #include <linux/interrupt.h>
 #include <linux/of.h>
 #include <linux/slab.h>
 #include <asm/unaligned.h>
 
-/* Version */
-#define MXT_VER_20		20
-#define MXT_VER_21		21
-#define MXT_VER_22		22
-
 /* Firmware files */
 #define MXT_FW_NAME		"maxtouch.fw"
 #define MXT_CFG_NAME		"maxtouch.cfg"
 #define MXT_CFG_MAGIC		"OBP_RAW V1"
 
 /* Registers */
-#define MXT_INFO		0x00
-#define MXT_FAMILY_ID		0x00
-#define MXT_VARIANT_ID		0x01
-#define MXT_VERSION		0x02
-#define MXT_BUILD		0x03
-#define MXT_MATRIX_X_SIZE	0x04
-#define MXT_MATRIX_Y_SIZE	0x05
-#define MXT_OBJECT_NUM		0x06
 #define MXT_OBJECT_START	0x07
-
 #define MXT_OBJECT_SIZE		6
 #define MXT_INFO_CHECKSUM_SIZE	3
 #define MXT_MAX_BLOCK_WRITE	256
@@ -103,21 +89,16 @@
 #define MXT_T6_STATUS_COMSERR	(1 << 2)
 
 /* MXT_GEN_POWER_T7 field */
-#define MXT_POWER_IDLEACQINT	0
-#define MXT_POWER_ACTVACQINT	1
-#define MXT_POWER_ACTV2IDLETO	2
-
-/* MXT_GEN_ACQUIRE_T8 field */
-#define MXT_ACQUIRE_CHRGTIME	0
-#define MXT_ACQUIRE_TCHDRIFT	2
-#define MXT_ACQUIRE_DRIFTST	3
-#define MXT_ACQUIRE_TCHAUTOCAL	4
-#define MXT_ACQUIRE_SYNC	5
-#define MXT_ACQUIRE_ATCHCALST	6
-#define MXT_ACQUIRE_ATCHCALSTHR	7
+struct t7_config {
+	u8 idle;
+	u8 active;
+} __packed;
+
+#define MXT_POWER_CFG_RUN		0
+#define MXT_POWER_CFG_DEEPSLEEP		1
 
 /* MXT_TOUCH_MULTI_T9 field */
-#define MXT_TOUCH_CTRL		0
+#define MXT_T9_CTRL		0
 #define MXT_T9_ORIENT		9
 #define MXT_T9_RANGE		18
 
@@ -139,51 +120,10 @@ struct t9_range {
 /* MXT_TOUCH_MULTI_T9 orient */
 #define MXT_T9_ORIENT_SWITCH	(1 << 0)
 
-/* MXT_PROCI_GRIPFACE_T20 field */
-#define MXT_GRIPFACE_CTRL	0
-#define MXT_GRIPFACE_XLOGRIP	1
-#define MXT_GRIPFACE_XHIGRIP	2
-#define MXT_GRIPFACE_YLOGRIP	3
-#define MXT_GRIPFACE_YHIGRIP	4
-#define MXT_GRIPFACE_MAXTCHS	5
-#define MXT_GRIPFACE_SZTHR1	7
-#define MXT_GRIPFACE_SZTHR2	8
-#define MXT_GRIPFACE_SHPTHR1	9
-#define MXT_GRIPFACE_SHPTHR2	10
-#define MXT_GRIPFACE_SUPEXTTO	11
-
-/* MXT_PROCI_NOISE field */
-#define MXT_NOISE_CTRL		0
-#define MXT_NOISE_OUTFLEN	1
-#define MXT_NOISE_GCAFUL_LSB	3
-#define MXT_NOISE_GCAFUL_MSB	4
-#define MXT_NOISE_GCAFLL_LSB	5
-#define MXT_NOISE_GCAFLL_MSB	6
-#define MXT_NOISE_ACTVGCAFVALID	7
-#define MXT_NOISE_NOISETHR	8
-#define MXT_NOISE_FREQHOPSCALE	10
-#define MXT_NOISE_FREQ0		11
-#define MXT_NOISE_FREQ1		12
-#define MXT_NOISE_FREQ2		13
-#define MXT_NOISE_FREQ3		14
-#define MXT_NOISE_FREQ4		15
-#define MXT_NOISE_IDLEGCAFVALID	16
-
 /* MXT_SPT_COMMSCONFIG_T18 */
 #define MXT_COMMS_CTRL		0
 #define MXT_COMMS_CMD		1
 
-/* MXT_SPT_CTECONFIG_T28 field */
-#define MXT_CTE_CTRL		0
-#define MXT_CTE_CMD		1
-#define MXT_CTE_MODE		2
-#define MXT_CTE_IDLEGCAFDEPTH	3
-#define MXT_CTE_ACTVGCAFDEPTH	4
-#define MXT_CTE_VOLTAGE		5
-
-#define MXT_VOLTAGE_DEFAULT	2700000
-#define MXT_VOLTAGE_STEP	10000
-
 /* Define for MXT_GEN_COMMAND_T6 */
 #define MXT_BOOT_VALUE		0xa5
 #define MXT_RESET_VALUE		0x01
@@ -291,6 +231,7 @@ struct mxt_data {
 	u8 last_message_count;
 	u8 num_touchids;
 	u8 multitouch;
+	struct t7_config t7_cfg;
 
 	/* Cached parameters from object table */
 	u16 T5_address;
@@ -997,16 +938,15 @@ static irqreturn_t mxt_process_messages_t44(struct mxt_data *data)
 
 	count = data->msg_buf[0];
 
-	if (count == 0) {
-		/*
-		 * This condition is caused by the CHG line being configured
-		 * in Mode 0. It results in unnecessary I2C operations but it
-		 * is benign.
-		 */
-		dev_dbg(dev, "Interrupt triggered but zero messages\n");
+	/*
+	 * This condition may be caused by the CHG line being configured in
+	 * Mode 0. It results in unnecessary I2C operations but it is benign.
+	 */
+	if (count == 0)
 		return IRQ_NONE;
-	} else if (count > data->max_reportid) {
-		dev_err(dev, "T44 count %d exceeded max report id\n", count);
+
+	if (count > data->max_reportid) {
+		dev_warn(dev, "T44 count %d exceeded max report id\n", count);
 		count = data->max_reportid;
 	}
 
@@ -1157,7 +1097,9 @@ static int mxt_soft_reset(struct mxt_data *data)
 	struct device *dev = &data->client->dev;
 	int ret = 0;
 
-	dev_info(dev, "Resetting chip\n");
+	dev_info(dev, "Resetting device\n");
+
+	disable_irq(data->irq);
 
 	reinit_completion(&data->reset_completion);
 
@@ -1165,6 +1107,11 @@ static int mxt_soft_reset(struct mxt_data *data)
 	if (ret)
 		return ret;
 
+	/* Ignore CHG line for 100ms after reset */
+	msleep(100);
+
+	enable_irq(data->irq);
+
 	ret = mxt_wait_for_completion(data, &data->reset_completion,
 				      MXT_RESET_TIMEOUT);
 	if (ret)
@@ -1361,6 +1308,8 @@ static int mxt_upload_cfg_mem(struct mxt_data *data, unsigned int cfg_start,
 	return 0;
 }
 
+static int mxt_init_t7_power_cfg(struct mxt_data *data);
+
 /*
  * mxt_update_cfg - download configuration to chip
  *
@@ -1508,6 +1457,9 @@ static int mxt_update_cfg(struct mxt_data *data, const struct firmware *cfg)
 
 	dev_info(dev, "Config successfully updated\n");
 
+	/* T7 config may have changed */
+	mxt_init_t7_power_cfg(data);
+
 release_mem:
 	kfree(config_mem);
 	return ret;
@@ -1533,7 +1485,7 @@ static int mxt_get_info(struct mxt_data *data)
 	int error;
 
 	/* Read 7-byte info block starting at address 0 */
-	error = __mxt_read_reg(client, MXT_INFO, sizeof(*info), info);
+	error = __mxt_read_reg(client, 0, sizeof(*info), info);
 	if (error)
 		return error;
 
@@ -1905,6 +1857,8 @@ static int mxt_initialize_input_device(struct mxt_data *data)
 	if (pdata->t19_num_keys) {
 		mxt_set_up_as_touchpad(input_dev, data);
 		mt_flags |= INPUT_MT_POINTER;
+	} else {
+		mt_flags |= INPUT_MT_DIRECT;
 	}
 
 	/* For multi touch */
@@ -2051,6 +2005,60 @@ err_free_object_table:
 	return error;
 }
 
+static int mxt_set_t7_power_cfg(struct mxt_data *data, u8 sleep)
+{
+	struct device *dev = &data->client->dev;
+	int error;
+	struct t7_config *new_config;
+	struct t7_config deepsleep = { .active = 0, .idle = 0 };
+
+	if (sleep == MXT_POWER_CFG_DEEPSLEEP)
+		new_config = &deepsleep;
+	else
+		new_config = &data->t7_cfg;
+
+	error = __mxt_write_reg(data->client, data->T7_address,
+				sizeof(data->t7_cfg), new_config);
+	if (error)
+		return error;
+
+	dev_dbg(dev, "Set T7 ACTV:%d IDLE:%d\n",
+		new_config->active, new_config->idle);
+
+	return 0;
+}
+
+static int mxt_init_t7_power_cfg(struct mxt_data *data)
+{
+	struct device *dev = &data->client->dev;
+	int error;
+	bool retry = false;
+
+recheck:
+	error = __mxt_read_reg(data->client, data->T7_address,
+				sizeof(data->t7_cfg), &data->t7_cfg);
+	if (error)
+		return error;
+
+	if (data->t7_cfg.active == 0 || data->t7_cfg.idle == 0) {
+		if (!retry) {
+			dev_dbg(dev, "T7 cfg zero, resetting\n");
+			mxt_soft_reset(data);
+			retry = true;
+			goto recheck;
+		} else {
+			dev_dbg(dev, "T7 cfg zero after reset, overriding\n");
+			data->t7_cfg.active = 20;
+			data->t7_cfg.idle = 100;
+			return mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN);
+		}
+	}
+
+	dev_dbg(dev, "Initialized power cfg: ACTV %d, IDLE %d\n",
+		data->t7_cfg.active, data->t7_cfg.idle);
+	return 0;
+}
+
 static int mxt_configure_objects(struct mxt_data *data,
 				 const struct firmware *cfg)
 {
@@ -2058,6 +2066,12 @@ static int mxt_configure_objects(struct mxt_data *data,
 	struct mxt_info *info = &data->info;
 	int error;
 
+	error = mxt_init_t7_power_cfg(data);
+	if (error) {
+		dev_err(dev, "Failed to initialize power cfg\n");
+		return error;
+	}
+
 	if (cfg) {
 		error = mxt_update_cfg(data, cfg);
 		if (error)
@@ -2346,14 +2360,41 @@ static const struct attribute_group mxt_attr_group = {
 
 static void mxt_start(struct mxt_data *data)
 {
-	/* Touch enable */
-	mxt_write_object(data, data->multitouch, MXT_TOUCH_CTRL, 0x83);
+	switch (data->pdata->suspend_mode) {
+	case MXT_SUSPEND_T9_CTRL:
+		mxt_soft_reset(data);
+
+		/* Touch enable */
+		/* 0x83 = SCANEN | RPTEN | ENABLE */
+		mxt_write_object(data,
+				MXT_TOUCH_MULTI_T9, MXT_T9_CTRL, 0x83);
+		break;
+
+	case MXT_SUSPEND_DEEP_SLEEP:
+	default:
+		mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN);
+
+		/* Recalibrate since chip has been in deep sleep */
+		mxt_t6_command(data, MXT_COMMAND_CALIBRATE, 1, false);
+		break;
+	}
+
 }
 
 static void mxt_stop(struct mxt_data *data)
 {
-	/* Touch disable */
-	mxt_write_object(data, data->multitouch, MXT_TOUCH_CTRL, 0);
+	switch (data->pdata->suspend_mode) {
+	case MXT_SUSPEND_T9_CTRL:
+		/* Touch disable */
+		mxt_write_object(data,
+				MXT_TOUCH_MULTI_T9, MXT_T9_CTRL, 0);
+		break;
+
+	case MXT_SUSPEND_DEEP_SLEEP:
+	default:
+		mxt_set_t7_power_cfg(data, MXT_POWER_CFG_DEEPSLEEP);
+		break;
+	}
 }
 
 static int mxt_input_open(struct input_dev *dev)
@@ -2376,19 +2417,18 @@ static void mxt_input_close(struct input_dev *dev)
 static const struct mxt_platform_data *mxt_parse_dt(struct i2c_client *client)
 {
 	struct mxt_platform_data *pdata;
+	struct device_node *np = client->dev.of_node;
 	u32 *keymap;
-	u32 keycode;
-	int proplen, i, ret;
+	int proplen, ret;
 
-	if (!client->dev.of_node)
+	if (!np)
 		return ERR_PTR(-ENOENT);
 
 	pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
 	if (!pdata)
 		return ERR_PTR(-ENOMEM);
 
-	if (of_find_property(client->dev.of_node, "linux,gpio-keymap",
-			     &proplen)) {
+	if (of_find_property(np, "linux,gpio-keymap", &proplen)) {
 		pdata->t19_num_keys = proplen / sizeof(u32);
 
 		keymap = devm_kzalloc(&client->dev,
@@ -2397,18 +2437,17 @@ static const struct mxt_platform_data *mxt_parse_dt(struct i2c_client *client)
 		if (!keymap)
 			return ERR_PTR(-ENOMEM);
 
-		for (i = 0; i < pdata->t19_num_keys; i++) {
-			ret = of_property_read_u32_index(client->dev.of_node,
-					"linux,gpio-keymap", i, &keycode);
-			if (ret)
-				keycode = KEY_RESERVED;
-
-			keymap[i] = keycode;
-		}
+		ret = of_property_read_u32_array(np, "linux,gpio-keymap",
+						 keymap, pdata->t19_num_keys);
+		if (ret)
+			dev_warn(&client->dev,
+				 "Couldn't read linux,gpio-keymap: %d\n", ret);
 
 		pdata->t19_keymap = keymap;
 	}
 
+	pdata->suspend_mode = MXT_SUSPEND_DEEP_SLEEP;
+
 	return pdata;
 }
 #else
@@ -2609,6 +2648,9 @@ static int __maybe_unused mxt_suspend(struct device *dev)
 	struct mxt_data *data = i2c_get_clientdata(client);
 	struct input_dev *input_dev = data->input_dev;
 
+	if (!input_dev)
+		return 0;
+
 	mutex_lock(&input_dev->mutex);
 
 	if (input_dev->users)
@@ -2625,7 +2667,8 @@ static int __maybe_unused mxt_resume(struct device *dev)
 	struct mxt_data *data = i2c_get_clientdata(client);
 	struct input_dev *input_dev = data->input_dev;
 
-	mxt_soft_reset(data);
+	if (!input_dev)
+		return 0;
 
 	mutex_lock(&input_dev->mutex);
 
@@ -2666,7 +2709,6 @@ MODULE_DEVICE_TABLE(i2c, mxt_id);
 static struct i2c_driver mxt_driver = {
 	.driver = {
 		.name	= "atmel_mxt_ts",
-		.owner	= THIS_MODULE,
 		.of_match_table = of_match_ptr(mxt_of_match),
 		.acpi_match_table = ACPI_PTR(mxt_acpi_id),
 		.pm	= &mxt_pm_ops,
diff --git a/drivers/input/touchscreen/auo-pixcir-ts.c b/drivers/input/touchscreen/auo-pixcir-ts.c
index 40e02dd5b2f9..38c06f754acd 100644
--- a/drivers/input/touchscreen/auo-pixcir-ts.c
+++ b/drivers/input/touchscreen/auo-pixcir-ts.c
@@ -686,7 +686,6 @@ MODULE_DEVICE_TABLE(of, auo_pixcir_ts_dt_idtable);
 
 static struct i2c_driver auo_pixcir_driver = {
 	.driver = {
-		.owner	= THIS_MODULE,
 		.name	= "auo_pixcir_ts",
 		.pm	= &auo_pixcir_pm_ops,
 		.of_match_table	= of_match_ptr(auo_pixcir_ts_dt_idtable),
diff --git a/drivers/input/touchscreen/bu21013_ts.c b/drivers/input/touchscreen/bu21013_ts.c
index b9b5ddad6658..931417eb4f5a 100644
--- a/drivers/input/touchscreen/bu21013_ts.c
+++ b/drivers/input/touchscreen/bu21013_ts.c
@@ -716,7 +716,6 @@ MODULE_DEVICE_TABLE(i2c, bu21013_id);
 static struct i2c_driver bu21013_driver = {
 	.driver	= {
 		.name	=	DRIVER_TP,
-		.owner	=	THIS_MODULE,
 #ifdef CONFIG_PM
 		.pm	=	&bu21013_dev_pm_ops,
 #endif
diff --git a/drivers/input/touchscreen/chipone_icn8318.c b/drivers/input/touchscreen/chipone_icn8318.c
index 32e9db0e04bf..22a6fead8cfb 100644
--- a/drivers/input/touchscreen/chipone_icn8318.c
+++ b/drivers/input/touchscreen/chipone_icn8318.c
@@ -300,7 +300,6 @@ MODULE_DEVICE_TABLE(i2c, icn8318_i2c_id);
 
 static struct i2c_driver icn8318_driver = {
 	.driver = {
-		.owner	= THIS_MODULE,
 		.name	= "chipone_icn8318",
 		.pm	= &icn8318_pm_ops,
 		.of_match_table = icn8318_of_match,
diff --git a/drivers/input/touchscreen/cy8ctmg110_ts.c b/drivers/input/touchscreen/cy8ctmg110_ts.c
index f2119ee0e21b..cc1d1350074e 100644
--- a/drivers/input/touchscreen/cy8ctmg110_ts.c
+++ b/drivers/input/touchscreen/cy8ctmg110_ts.c
@@ -347,7 +347,6 @@ MODULE_DEVICE_TABLE(i2c, cy8ctmg110_idtable);
 
 static struct i2c_driver cy8ctmg110_driver = {
 	.driver		= {
-		.owner	= THIS_MODULE,
 		.name	= CY8CTMG110_DRIVER_NAME,
 		.pm	= &cy8ctmg110_pm,
 	},
diff --git a/drivers/input/touchscreen/cyttsp4_i2c.c b/drivers/input/touchscreen/cyttsp4_i2c.c
index 8e2012c79058..9a323dd915de 100644
--- a/drivers/input/touchscreen/cyttsp4_i2c.c
+++ b/drivers/input/touchscreen/cyttsp4_i2c.c
@@ -74,7 +74,6 @@ MODULE_DEVICE_TABLE(i2c, cyttsp4_i2c_id);
 static struct i2c_driver cyttsp4_i2c_driver = {
 	.driver = {
 		.name	= CYTTSP4_I2C_NAME,
-		.owner	= THIS_MODULE,
 		.pm	= &cyttsp4_pm_ops,
 	},
 	.probe		= cyttsp4_i2c_probe,
diff --git a/drivers/input/touchscreen/cyttsp_i2c.c b/drivers/input/touchscreen/cyttsp_i2c.c
index 63104a86a9bd..519e2de2f8df 100644
--- a/drivers/input/touchscreen/cyttsp_i2c.c
+++ b/drivers/input/touchscreen/cyttsp_i2c.c
@@ -74,7 +74,6 @@ MODULE_DEVICE_TABLE(i2c, cyttsp_i2c_id);
 static struct i2c_driver cyttsp_i2c_driver = {
 	.driver = {
 		.name	= CY_I2C_NAME,
-		.owner	= THIS_MODULE,
 		.pm	= &cyttsp_pm_ops,
 	},
 	.probe		= cyttsp_i2c_probe,
diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c
index 394b1de9a2a3..48de1e8b3c93 100644
--- a/drivers/input/touchscreen/edt-ft5x06.c
+++ b/drivers/input/touchscreen/edt-ft5x06.c
@@ -1041,7 +1041,7 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client,
 			     0, tsdata->num_y * 64 - 1, 0, 0);
 
 	if (!pdata)
-		touchscreen_parse_of_params(input, true);
+		touchscreen_parse_properties(input, true);
 
 	error = input_mt_init_slots(input, MAX_SUPPORT_POINTS, INPUT_MT_DIRECT);
 	if (error) {
@@ -1134,7 +1134,6 @@ MODULE_DEVICE_TABLE(of, edt_ft5x06_of_match);
 
 static struct i2c_driver edt_ft5x06_ts_driver = {
 	.driver = {
-		.owner = THIS_MODULE,
 		.name = "edt_ft5x06",
 		.of_match_table = of_match_ptr(edt_ft5x06_of_match),
 		.pm = &edt_ft5x06_ts_pm_ops,
diff --git a/drivers/input/touchscreen/egalax_ts.c b/drivers/input/touchscreen/egalax_ts.c
index 4c56299284ef..1afc08b08155 100644
--- a/drivers/input/touchscreen/egalax_ts.c
+++ b/drivers/input/touchscreen/egalax_ts.c
@@ -264,11 +264,11 @@ static const struct of_device_id egalax_ts_dt_ids[] = {
 	{ .compatible = "eeti,egalax_ts" },
 	{ /* sentinel */ }
 };
+MODULE_DEVICE_TABLE(of, egalax_ts_dt_ids);
 
 static struct i2c_driver egalax_ts_driver = {
 	.driver = {
 		.name	= "egalax_ts",
-		.owner	= THIS_MODULE,
 		.pm	= &egalax_ts_pm_ops,
 		.of_match_table	= egalax_ts_dt_ids,
 	},
diff --git a/drivers/input/touchscreen/elants_i2c.c b/drivers/input/touchscreen/elants_i2c.c
index 0efd766a545b..ddac134b25b1 100644
--- a/drivers/input/touchscreen/elants_i2c.c
+++ b/drivers/input/touchscreen/elants_i2c.c
@@ -38,6 +38,8 @@
 #include <linux/input/mt.h>
 #include <linux/acpi.h>
 #include <linux/of.h>
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>
 #include <asm/unaligned.h>
 
 /* Device, Driver information */
@@ -102,6 +104,9 @@
 /* calibration timeout definition */
 #define ELAN_CALI_TIMEOUT_MSEC	10000
 
+#define ELAN_POWERON_DELAY_USEC	500
+#define ELAN_RESET_DELAY_MSEC	20
+
 enum elants_state {
 	ELAN_STATE_NORMAL,
 	ELAN_WAIT_QUEUE_HEADER,
@@ -118,6 +123,10 @@ struct elants_data {
 	struct i2c_client *client;
 	struct input_dev *input;
 
+	struct regulator *vcc33;
+	struct regulator *vccio;
+	struct gpio_desc *reset_gpio;
+
 	u16 fw_version;
 	u8 test_version;
 	u8 solution_version;
@@ -141,6 +150,7 @@ struct elants_data {
 	u8 buf[MAX_PACKET_SIZE];
 
 	bool wake_irq_enabled;
+	bool keep_power_in_suspend;
 };
 
 static int elants_i2c_send(struct i2c_client *client,
@@ -605,6 +615,7 @@ static int elants_i2c_do_update_firmware(struct i2c_client *client,
 	const u8 enter_iap[] = { 0x45, 0x49, 0x41, 0x50 };
 	const u8 enter_iap2[] = { 0x54, 0x00, 0x12, 0x34 };
 	const u8 iap_ack[] = { 0x55, 0xaa, 0x33, 0xcc };
+	const u8 close_idle[] = {0x54, 0x2c, 0x01, 0x01};
 	u8 buf[HEADER_SIZE];
 	u16 send_id;
 	int page, n_fw_pages;
@@ -617,8 +628,13 @@ static int elants_i2c_do_update_firmware(struct i2c_client *client,
 	} else {
 		/* Start IAP Procedure */
 		dev_dbg(&client->dev, "Normal IAP procedure\n");
+		/* Close idle mode */
+		error = elants_i2c_send(client, close_idle, sizeof(close_idle));
+		if (error)
+			dev_err(&client->dev, "Failed close idle: %d\n", error);
+		msleep(60);
 		elants_i2c_sw_reset(client);
-
+		msleep(20);
 		error = elants_i2c_send(client, enter_iap, sizeof(enter_iap));
 	}
 
@@ -1052,6 +1068,67 @@ static void elants_i2c_remove_sysfs_group(void *_data)
 	sysfs_remove_group(&ts->client->dev.kobj, &elants_attribute_group);
 }
 
+static int elants_i2c_power_on(struct elants_data *ts)
+{
+	int error;
+
+	/*
+	 * If we do not have reset gpio assume platform firmware
+	 * controls regulators and does power them on for us.
+	 */
+	if (IS_ERR_OR_NULL(ts->reset_gpio))
+		return 0;
+
+	gpiod_set_value_cansleep(ts->reset_gpio, 1);
+
+	error = regulator_enable(ts->vcc33);
+	if (error) {
+		dev_err(&ts->client->dev,
+			"failed to enable vcc33 regulator: %d\n",
+			error);
+		goto release_reset_gpio;
+	}
+
+	error = regulator_enable(ts->vccio);
+	if (error) {
+		dev_err(&ts->client->dev,
+			"failed to enable vccio regulator: %d\n",
+			error);
+		regulator_disable(ts->vcc33);
+		goto release_reset_gpio;
+	}
+
+	/*
+	 * We need to wait a bit after powering on controller before
+	 * we are allowed to release reset GPIO.
+	 */
+	udelay(ELAN_POWERON_DELAY_USEC);
+
+release_reset_gpio:
+	gpiod_set_value_cansleep(ts->reset_gpio, 0);
+	if (error)
+		return error;
+
+	msleep(ELAN_RESET_DELAY_MSEC);
+
+	return 0;
+}
+
+static void elants_i2c_power_off(void *_data)
+{
+	struct elants_data *ts = _data;
+
+	if (!IS_ERR_OR_NULL(ts->reset_gpio)) {
+		/*
+		 * Activate reset gpio to prevent leakage through the
+		 * pin once we shut off power to the controller.
+		 */
+		gpiod_set_value_cansleep(ts->reset_gpio, 1);
+		regulator_disable(ts->vccio);
+		regulator_disable(ts->vcc33);
+	}
+}
+
 static int elants_i2c_probe(struct i2c_client *client,
 			    const struct i2c_device_id *id)
 {
@@ -1066,13 +1143,6 @@ static int elants_i2c_probe(struct i2c_client *client,
 		return -ENXIO;
 	}
 
-	/* Make sure there is something at this address */
-	if (i2c_smbus_xfer(client->adapter, client->addr, 0,
-			I2C_SMBUS_READ, 0, I2C_SMBUS_BYTE, &dummy) < 0) {
-		dev_err(&client->dev, "nothing at this address\n");
-		return -ENXIO;
-	}
-
 	ts = devm_kzalloc(&client->dev, sizeof(struct elants_data), GFP_KERNEL);
 	if (!ts)
 		return -ENOMEM;
@@ -1083,6 +1153,62 @@ static int elants_i2c_probe(struct i2c_client *client,
 	ts->client = client;
 	i2c_set_clientdata(client, ts);
 
+	ts->vcc33 = devm_regulator_get(&client->dev, "vcc33");
+	if (IS_ERR(ts->vcc33)) {
+		error = PTR_ERR(ts->vcc33);
+		if (error != -EPROBE_DEFER)
+			dev_err(&client->dev,
+				"Failed to get 'vcc33' regulator: %d\n",
+				error);
+		return error;
+	}
+
+	ts->vccio = devm_regulator_get(&client->dev, "vccio");
+	if (IS_ERR(ts->vccio)) {
+		error = PTR_ERR(ts->vccio);
+		if (error != -EPROBE_DEFER)
+			dev_err(&client->dev,
+				"Failed to get 'vccio' regulator: %d\n",
+				error);
+		return error;
+	}
+
+	ts->reset_gpio = devm_gpiod_get(&client->dev, "reset", GPIOD_OUT_LOW);
+	if (IS_ERR(ts->reset_gpio)) {
+		error = PTR_ERR(ts->reset_gpio);
+
+		if (error == -EPROBE_DEFER)
+			return error;
+
+		if (error != -ENOENT && error != -ENOSYS) {
+			dev_err(&client->dev,
+				"failed to get reset gpio: %d\n",
+				error);
+			return error;
+		}
+
+		ts->keep_power_in_suspend = true;
+	}
+
+	error = elants_i2c_power_on(ts);
+	if (error)
+		return error;
+
+	error = devm_add_action(&client->dev, elants_i2c_power_off, ts);
+	if (error) {
+		dev_err(&client->dev,
+			"failed to install power off action: %d\n", error);
+		elants_i2c_power_off(ts);
+		return error;
+	}
+
+	/* Make sure there is something at this address */
+	if (i2c_smbus_xfer(client->adapter, client->addr, 0,
+			   I2C_SMBUS_READ, 0, I2C_SMBUS_BYTE, &dummy) < 0) {
+		dev_err(&client->dev, "nothing at this address\n");
+		return -ENXIO;
+	}
+
 	error = elants_i2c_initialize(ts);
 	if (error) {
 		dev_err(&client->dev, "failed to initialize: %d\n", error);
@@ -1190,17 +1316,23 @@ static int __maybe_unused elants_i2c_suspend(struct device *dev)
 
 	disable_irq(client->irq);
 
-	for (retry_cnt = 0; retry_cnt < MAX_RETRIES; retry_cnt++) {
-		error = elants_i2c_send(client, set_sleep_cmd,
-					sizeof(set_sleep_cmd));
-		if (!error)
-			break;
+	if (device_may_wakeup(dev) || ts->keep_power_in_suspend) {
+		for (retry_cnt = 0; retry_cnt < MAX_RETRIES; retry_cnt++) {
+			error = elants_i2c_send(client, set_sleep_cmd,
+						sizeof(set_sleep_cmd));
+			if (!error)
+				break;
 
-		dev_err(&client->dev, "suspend command failed: %d\n", error);
-	}
+			dev_err(&client->dev,
+				"suspend command failed: %d\n", error);
+		}
 
-	if (device_may_wakeup(dev))
-		ts->wake_irq_enabled = (enable_irq_wake(client->irq) == 0);
+		if (device_may_wakeup(dev))
+			ts->wake_irq_enabled =
+					(enable_irq_wake(client->irq) == 0);
+	} else {
+		elants_i2c_power_off(ts);
+	}
 
 	return 0;
 }
@@ -1216,13 +1348,19 @@ static int __maybe_unused elants_i2c_resume(struct device *dev)
 	if (device_may_wakeup(dev) && ts->wake_irq_enabled)
 		disable_irq_wake(client->irq);
 
-	for (retry_cnt = 0; retry_cnt < MAX_RETRIES; retry_cnt++) {
-		error = elants_i2c_send(client, set_active_cmd,
-					sizeof(set_active_cmd));
-		if (!error)
-			break;
+	if (ts->keep_power_in_suspend) {
+		for (retry_cnt = 0; retry_cnt < MAX_RETRIES; retry_cnt++) {
+			error = elants_i2c_send(client, set_active_cmd,
+						sizeof(set_active_cmd));
+			if (!error)
+				break;
 
-		dev_err(&client->dev, "resume command failed: %d\n", error);
+			dev_err(&client->dev,
+				"resume command failed: %d\n", error);
+		}
+	} else {
+		elants_i2c_power_on(ts);
+		elants_i2c_initialize(ts);
 	}
 
 	ts->state = ELAN_STATE_NORMAL;
@@ -1261,10 +1399,10 @@ static struct i2c_driver elants_i2c_driver = {
 	.id_table = elants_i2c_id,
 	.driver = {
 		.name = DEVICE_NAME,
-		.owner = THIS_MODULE,
 		.pm = &elants_i2c_pm_ops,
 		.acpi_match_table = ACPI_PTR(elants_acpi_id),
 		.of_match_table = of_match_ptr(elants_of_match),
+		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
 	},
 };
 module_i2c_driver(elants_i2c_driver);
diff --git a/drivers/input/touchscreen/goodix.c b/drivers/input/touchscreen/goodix.c
index e36162b28c2a..4d113c9e4b77 100644
--- a/drivers/input/touchscreen/goodix.c
+++ b/drivers/input/touchscreen/goodix.c
@@ -420,6 +420,7 @@ static const struct i2c_device_id goodix_ts_id[] = {
 	{ "GDIX1001:00", 0 },
 	{ }
 };
+MODULE_DEVICE_TABLE(i2c, goodix_ts_id);
 
 #ifdef CONFIG_ACPI
 static const struct acpi_device_id goodix_acpi_match[] = {
@@ -448,7 +449,6 @@ static struct i2c_driver goodix_ts_driver = {
 	.id_table = goodix_ts_id,
 	.driver = {
 		.name = "Goodix-TS",
-		.owner = THIS_MODULE,
 		.acpi_match_table = ACPI_PTR(goodix_acpi_match),
 		.of_match_table = of_match_ptr(goodix_of_match),
 	},
diff --git a/drivers/input/touchscreen/ili210x.c b/drivers/input/touchscreen/ili210x.c
index da6dc819c846..cf0dc2f0b1be 100644
--- a/drivers/input/touchscreen/ili210x.c
+++ b/drivers/input/touchscreen/ili210x.c
@@ -343,7 +343,6 @@ MODULE_DEVICE_TABLE(i2c, ili210x_i2c_id);
 static struct i2c_driver ili210x_ts_driver = {
 	.driver = {
 		.name = "ili210x_i2c",
-		.owner = THIS_MODULE,
 		.pm = &ili210x_i2c_pm,
 	},
 	.id_table = ili210x_i2c_id,
diff --git a/drivers/input/touchscreen/max11801_ts.c b/drivers/input/touchscreen/max11801_ts.c
index a68ec142ee9a..82079cde849c 100644
--- a/drivers/input/touchscreen/max11801_ts.c
+++ b/drivers/input/touchscreen/max11801_ts.c
@@ -229,7 +229,6 @@ MODULE_DEVICE_TABLE(i2c, max11801_ts_id);
 static struct i2c_driver max11801_ts_driver = {
 	.driver = {
 		.name	= "max11801_ts",
-		.owner	= THIS_MODULE,
 	},
 	.id_table	= max11801_ts_id,
 	.probe		= max11801_ts_probe,
diff --git a/drivers/input/touchscreen/mms114.c b/drivers/input/touchscreen/mms114.c
index 67c0d31613d8..7cce87650fc8 100644
--- a/drivers/input/touchscreen/mms114.c
+++ b/drivers/input/touchscreen/mms114.c
@@ -572,12 +572,12 @@ static const struct of_device_id mms114_dt_match[] = {
 	{ .compatible = "melfas,mms114" },
 	{ }
 };
+MODULE_DEVICE_TABLE(of, mms114_dt_match);
 #endif
 
 static struct i2c_driver mms114_driver = {
 	.driver = {
 		.name	= "mms114",
-		.owner	= THIS_MODULE,
 		.pm	= &mms114_pm_ops,
 		.of_match_table = of_match_ptr(mms114_dt_match),
 	},
diff --git a/drivers/input/touchscreen/of_touchscreen.c b/drivers/input/touchscreen/of_touchscreen.c
index 806cd0ad160f..bb6f2fe14667 100644
--- a/drivers/input/touchscreen/of_touchscreen.c
+++ b/drivers/input/touchscreen/of_touchscreen.c
@@ -9,12 +9,12 @@
  *
  */
 
-#include <linux/of.h>
+#include <linux/property.h>
 #include <linux/input.h>
 #include <linux/input/mt.h>
 #include <linux/input/touchscreen.h>
 
-static bool touchscreen_get_prop_u32(struct device_node *np,
+static bool touchscreen_get_prop_u32(struct device *dev,
 				     const char *property,
 				     unsigned int default_value,
 				     unsigned int *value)
@@ -22,7 +22,7 @@ static bool touchscreen_get_prop_u32(struct device_node *np,
 	u32 val;
 	int error;
 
-	error = of_property_read_u32(np, property, &val);
+	error = device_property_read_u32(dev, property, &val);
 	if (error) {
 		*value = default_value;
 		return false;
@@ -39,13 +39,9 @@ static void touchscreen_set_params(struct input_dev *dev,
 	struct input_absinfo *absinfo;
 
 	if (!test_bit(axis, dev->absbit)) {
-		/*
-		 * Emit a warning only if the axis is not a multitouch
-		 * axis, which might not be set by the driver.
-		 */
-		if (!input_is_mt_axis(axis))
-			dev_warn(&dev->dev,
-				 "DT specifies parameters but the axis is not set up\n");
+		dev_warn(&dev->dev,
+			 "DT specifies parameters but the axis %lu is not set up\n",
+			 axis);
 		return;
 	}
 
@@ -55,52 +51,58 @@ static void touchscreen_set_params(struct input_dev *dev,
 }
 
 /**
- * touchscreen_parse_of_params - parse common touchscreen DT properties
- * @dev: device that should be parsed
+ * touchscreen_parse_properties - parse common touchscreen DT properties
+ * @input: input device that should be parsed
+ * @multitouch: specifies whether parsed properties should be applied to
+ *	single-touch or multi-touch axes
  *
  * This function parses common DT properties for touchscreens and setups the
- * input device accordingly. The function keeps previously setuped default
+ * input device accordingly. The function keeps previously set up default
  * values if no value is specified via DT.
  */
-void touchscreen_parse_of_params(struct input_dev *dev, bool multitouch)
+void touchscreen_parse_properties(struct input_dev *input, bool multitouch)
 {
-	struct device_node *np = dev->dev.parent->of_node;
+	struct device *dev = input->dev.parent;
 	unsigned int axis;
 	unsigned int maximum, fuzz;
 	bool data_present;
 
-	input_alloc_absinfo(dev);
-	if (!dev->absinfo)
+	input_alloc_absinfo(input);
+	if (!input->absinfo)
 		return;
 
 	axis = multitouch ? ABS_MT_POSITION_X : ABS_X;
-	data_present = touchscreen_get_prop_u32(np, "touchscreen-size-x",
-						input_abs_get_max(dev, axis),
+	data_present = touchscreen_get_prop_u32(dev, "touchscreen-size-x",
+						input_abs_get_max(input,
+								  axis) + 1,
 						&maximum) |
-		       touchscreen_get_prop_u32(np, "touchscreen-fuzz-x",
-						input_abs_get_fuzz(dev, axis),
+		       touchscreen_get_prop_u32(dev, "touchscreen-fuzz-x",
+						input_abs_get_fuzz(input, axis),
 						&fuzz);
 	if (data_present)
-		touchscreen_set_params(dev, axis, maximum, fuzz);
+		touchscreen_set_params(input, axis, maximum - 1, fuzz);
 
 	axis = multitouch ? ABS_MT_POSITION_Y : ABS_Y;
-	data_present = touchscreen_get_prop_u32(np, "touchscreen-size-y",
-						input_abs_get_max(dev, axis),
+	data_present = touchscreen_get_prop_u32(dev, "touchscreen-size-y",
+						input_abs_get_max(input,
+								  axis) + 1,
 						&maximum) |
-		       touchscreen_get_prop_u32(np, "touchscreen-fuzz-y",
-						input_abs_get_fuzz(dev, axis),
+		       touchscreen_get_prop_u32(dev, "touchscreen-fuzz-y",
+						input_abs_get_fuzz(input, axis),
 						&fuzz);
 	if (data_present)
-		touchscreen_set_params(dev, axis, maximum, fuzz);
+		touchscreen_set_params(input, axis, maximum - 1, fuzz);
 
 	axis = multitouch ? ABS_MT_PRESSURE : ABS_PRESSURE;
-	data_present = touchscreen_get_prop_u32(np, "touchscreen-max-pressure",
-						input_abs_get_max(dev, axis),
+	data_present = touchscreen_get_prop_u32(dev,
+						"touchscreen-max-pressure",
+						input_abs_get_max(input, axis),
 						&maximum) |
-		       touchscreen_get_prop_u32(np, "touchscreen-fuzz-pressure",
-						input_abs_get_fuzz(dev, axis),
+		       touchscreen_get_prop_u32(dev,
+						"touchscreen-fuzz-pressure",
+						input_abs_get_fuzz(input, axis),
 						&fuzz);
 	if (data_present)
-		touchscreen_set_params(dev, axis, maximum, fuzz);
+		touchscreen_set_params(input, axis, maximum, fuzz);
 }
-EXPORT_SYMBOL(touchscreen_parse_of_params);
+EXPORT_SYMBOL(touchscreen_parse_properties);
diff --git a/drivers/input/touchscreen/pixcir_i2c_ts.c b/drivers/input/touchscreen/pixcir_i2c_ts.c
index 8f3e243a62bf..91621725bfb5 100644
--- a/drivers/input/touchscreen/pixcir_i2c_ts.c
+++ b/drivers/input/touchscreen/pixcir_i2c_ts.c
@@ -24,20 +24,23 @@
 #include <linux/i2c.h>
 #include <linux/input.h>
 #include <linux/input/mt.h>
-#include <linux/input/pixcir_ts.h>
+#include <linux/input/touchscreen.h>
 #include <linux/gpio.h>
-#include <linux/of.h>
-#include <linux/of_gpio.h>
+#include <linux/gpio/consumer.h>
+/*#include <linux/of.h>*/
 #include <linux/of_device.h>
+#include <linux/platform_data/pixcir_i2c_ts.h>
 
 #define PIXCIR_MAX_SLOTS       5 /* Max fingers supported by driver */
 
 struct pixcir_i2c_ts_data {
 	struct i2c_client *client;
 	struct input_dev *input;
-	const struct pixcir_ts_platform_data *pdata;
-	bool running;
+	struct gpio_desc *gpio_attb;
+	struct gpio_desc *gpio_reset;
+	const struct pixcir_i2c_chip_data *chip;
 	int max_fingers;	/* Max fingers supported in this instance */
+	bool running;
 };
 
 struct pixcir_touch {
@@ -60,7 +63,7 @@ static void pixcir_ts_parse(struct pixcir_i2c_ts_data *tsdata,
 	u8 touch;
 	int ret, i;
 	int readsize;
-	const struct pixcir_i2c_chip_data *chip = &tsdata->pdata->chip;
+	const struct pixcir_i2c_chip_data *chip = tsdata->chip;
 
 	memset(report, 0, sizeof(struct pixcir_report_data));
 
@@ -113,13 +116,13 @@ static void pixcir_ts_report(struct pixcir_i2c_ts_data *ts,
 	struct pixcir_touch *touch;
 	int n, i, slot;
 	struct device *dev = &ts->client->dev;
-	const struct pixcir_i2c_chip_data *chip = &ts->pdata->chip;
+	const struct pixcir_i2c_chip_data *chip = ts->chip;
 
 	n = report->num_touches;
 	if (n > PIXCIR_MAX_SLOTS)
 		n = PIXCIR_MAX_SLOTS;
 
-	if (!chip->has_hw_ids) {
+	if (!ts->chip->has_hw_ids) {
 		for (i = 0; i < n; i++) {
 			touch = &report->touches[i];
 			pos[i].x = touch->x;
@@ -161,7 +164,6 @@ static void pixcir_ts_report(struct pixcir_i2c_ts_data *ts,
 static irqreturn_t pixcir_ts_isr(int irq, void *dev_id)
 {
 	struct pixcir_i2c_ts_data *tsdata = dev_id;
-	const struct pixcir_ts_platform_data *pdata = tsdata->pdata;
 	struct pixcir_report_data report;
 
 	while (tsdata->running) {
@@ -171,7 +173,7 @@ static irqreturn_t pixcir_ts_isr(int irq, void *dev_id)
 		/* report it */
 		pixcir_ts_report(tsdata, &report);
 
-		if (gpio_get_value(pdata->gpio_attb)) {
+		if (gpiod_get_value_cansleep(tsdata->gpio_attb)) {
 			if (report.num_touches) {
 				/*
 				 * Last report with no finger up?
@@ -189,6 +191,17 @@ static irqreturn_t pixcir_ts_isr(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
+static void pixcir_reset(struct pixcir_i2c_ts_data *tsdata)
+{
+	if (!IS_ERR_OR_NULL(tsdata->gpio_reset)) {
+		gpiod_set_value_cansleep(tsdata->gpio_reset, 1);
+		ndelay(100);	/* datasheet section 1.2.3 says 80ns min. */
+		gpiod_set_value_cansleep(tsdata->gpio_reset, 0);
+		/* wait for controller ready. 100ms guess. */
+		msleep(100);
+	}
+}
+
 static int pixcir_set_power_mode(struct pixcir_i2c_ts_data *ts,
 				 enum pixcir_power_mode mode)
 {
@@ -411,85 +424,59 @@ static SIMPLE_DEV_PM_OPS(pixcir_dev_pm_ops,
 #ifdef CONFIG_OF
 static const struct of_device_id pixcir_of_match[];
 
-static struct pixcir_ts_platform_data *pixcir_parse_dt(struct device *dev)
+static int pixcir_parse_dt(struct device *dev,
+			   struct pixcir_i2c_ts_data *tsdata)
 {
-	struct pixcir_ts_platform_data *pdata;
-	struct device_node *np = dev->of_node;
 	const struct of_device_id *match;
 
 	match = of_match_device(of_match_ptr(pixcir_of_match), dev);
 	if (!match)
-		return ERR_PTR(-EINVAL);
-
-	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
-	if (!pdata)
-		return ERR_PTR(-ENOMEM);
-
-	pdata->chip = *(const struct pixcir_i2c_chip_data *)match->data;
-
-	pdata->gpio_attb = of_get_named_gpio(np, "attb-gpio", 0);
-	/* gpio_attb validity is checked in probe */
-
-	if (of_property_read_u32(np, "touchscreen-size-x", &pdata->x_max)) {
-		dev_err(dev, "Failed to get touchscreen-size-x property\n");
-		return ERR_PTR(-EINVAL);
-	}
-	pdata->x_max -= 1;
-
-	if (of_property_read_u32(np, "touchscreen-size-y", &pdata->y_max)) {
-		dev_err(dev, "Failed to get touchscreen-size-y property\n");
-		return ERR_PTR(-EINVAL);
-	}
-	pdata->y_max -= 1;
+		return -EINVAL;
 
-	dev_dbg(dev, "%s: x %d, y %d, gpio %d\n", __func__,
-		pdata->x_max + 1, pdata->y_max + 1, pdata->gpio_attb);
+	tsdata->chip = (const struct pixcir_i2c_chip_data *)match->data;
+	if (!tsdata->chip)
+		return -EINVAL;
 
-	return pdata;
+	return 0;
 }
 #else
-static struct pixcir_ts_platform_data *pixcir_parse_dt(struct device *dev)
+static int pixcir_parse_dt(struct device *dev,
+			   struct pixcir_i2c_ts_data *tsdata)
 {
-	return ERR_PTR(-EINVAL);
+	return -EINVAL;
 }
 #endif
 
 static int pixcir_i2c_ts_probe(struct i2c_client *client,
-					 const struct i2c_device_id *id)
+			       const struct i2c_device_id *id)
 {
 	const struct pixcir_ts_platform_data *pdata =
 			dev_get_platdata(&client->dev);
 	struct device *dev = &client->dev;
-	struct device_node *np = dev->of_node;
 	struct pixcir_i2c_ts_data *tsdata;
 	struct input_dev *input;
 	int error;
 
-	if (np && !pdata) {
-		pdata = pixcir_parse_dt(dev);
-		if (IS_ERR(pdata))
-			return PTR_ERR(pdata);
-	}
+	tsdata = devm_kzalloc(dev, sizeof(*tsdata), GFP_KERNEL);
+	if (!tsdata)
+		return -ENOMEM;
 
-	if (!pdata) {
+	if (pdata) {
+		tsdata->chip = &pdata->chip;
+	} else if (dev->of_node) {
+		error = pixcir_parse_dt(dev, tsdata);
+		if (error)
+			return error;
+	} else {
 		dev_err(&client->dev, "platform data not defined\n");
 		return -EINVAL;
 	}
 
-	if (!gpio_is_valid(pdata->gpio_attb)) {
-		dev_err(dev, "Invalid gpio_attb in pdata\n");
+	if (!tsdata->chip->max_fingers) {
+		dev_err(dev, "Invalid max_fingers in chip data\n");
 		return -EINVAL;
 	}
 
-	if (!pdata->chip.max_fingers) {
-		dev_err(dev, "Invalid max_fingers in pdata\n");
-		return -EINVAL;
-	}
-
-	tsdata = devm_kzalloc(dev, sizeof(*tsdata), GFP_KERNEL);
-	if (!tsdata)
-		return -ENOMEM;
-
 	input = devm_input_allocate_device(dev);
 	if (!input) {
 		dev_err(dev, "Failed to allocate input device\n");
@@ -498,7 +485,6 @@ static int pixcir_i2c_ts_probe(struct i2c_client *client,
 
 	tsdata->client = client;
 	tsdata->input = input;
-	tsdata->pdata = pdata;
 
 	input->name = client->name;
 	input->id.bustype = BUS_I2C;
@@ -506,15 +492,21 @@ static int pixcir_i2c_ts_probe(struct i2c_client *client,
 	input->close = pixcir_input_close;
 	input->dev.parent = &client->dev;
 
-	__set_bit(EV_KEY, input->evbit);
-	__set_bit(EV_ABS, input->evbit);
-	__set_bit(BTN_TOUCH, input->keybit);
-	input_set_abs_params(input, ABS_X, 0, pdata->x_max, 0, 0);
-	input_set_abs_params(input, ABS_Y, 0, pdata->y_max, 0, 0);
-	input_set_abs_params(input, ABS_MT_POSITION_X, 0, pdata->x_max, 0, 0);
-	input_set_abs_params(input, ABS_MT_POSITION_Y, 0, pdata->y_max, 0, 0);
+	if (pdata) {
+		input_set_abs_params(input, ABS_MT_POSITION_X, 0, pdata->x_max, 0, 0);
+		input_set_abs_params(input, ABS_MT_POSITION_Y, 0, pdata->y_max, 0, 0);
+	} else {
+		input_set_capability(input, EV_ABS, ABS_MT_POSITION_X);
+		input_set_capability(input, EV_ABS, ABS_MT_POSITION_Y);
+		touchscreen_parse_properties(input, true);
+		if (!input_abs_get_max(input, ABS_MT_POSITION_X) ||
+		    !input_abs_get_max(input, ABS_MT_POSITION_Y)) {
+			dev_err(dev, "Touchscreen size is not specified\n");
+			return -EINVAL;
+		}
+	}
 
-	tsdata->max_fingers = tsdata->pdata->chip.max_fingers;
+	tsdata->max_fingers = tsdata->chip->max_fingers;
 	if (tsdata->max_fingers > PIXCIR_MAX_SLOTS) {
 		tsdata->max_fingers = PIXCIR_MAX_SLOTS;
 		dev_info(dev, "Limiting maximum fingers to %d\n",
@@ -530,10 +522,18 @@ static int pixcir_i2c_ts_probe(struct i2c_client *client,
 
 	input_set_drvdata(input, tsdata);
 
-	error = devm_gpio_request_one(dev, pdata->gpio_attb,
-				      GPIOF_DIR_IN, "pixcir_i2c_attb");
-	if (error) {
-		dev_err(dev, "Failed to request ATTB gpio\n");
+	tsdata->gpio_attb = devm_gpiod_get(dev, "attb", GPIOD_IN);
+	if (IS_ERR(tsdata->gpio_attb)) {
+		error = PTR_ERR(tsdata->gpio_attb);
+		dev_err(dev, "Failed to request ATTB gpio: %d\n", error);
+		return error;
+	}
+
+	tsdata->gpio_reset = devm_gpiod_get_optional(dev, "reset",
+						     GPIOD_OUT_LOW);
+	if (IS_ERR(tsdata->gpio_reset)) {
+		error = PTR_ERR(tsdata->gpio_reset);
+		dev_err(dev, "Failed to request RESET gpio: %d\n", error);
 		return error;
 	}
 
@@ -545,6 +545,8 @@ static int pixcir_i2c_ts_probe(struct i2c_client *client,
 		return error;
 	}
 
+	pixcir_reset(tsdata);
+
 	/* Always be in IDLE mode to save power, device supports auto wake */
 	error = pixcir_set_power_mode(tsdata, PIXCIR_POWER_IDLE);
 	if (error) {
@@ -602,7 +604,6 @@ MODULE_DEVICE_TABLE(of, pixcir_of_match);
 
 static struct i2c_driver pixcir_i2c_ts_driver = {
 	.driver = {
-		.owner	= THIS_MODULE,
 		.name	= "pixcir_ts",
 		.pm	= &pixcir_dev_pm_ops,
 		.of_match_table = of_match_ptr(pixcir_of_match),
diff --git a/drivers/input/touchscreen/st1232.c b/drivers/input/touchscreen/st1232.c
index 697e26e52d54..e943678ce54c 100644
--- a/drivers/input/touchscreen/st1232.c
+++ b/drivers/input/touchscreen/st1232.c
@@ -296,7 +296,6 @@ static struct i2c_driver st1232_ts_driver = {
 	.id_table	= st1232_ts_id,
 	.driver = {
 		.name	= ST1232_TS_NAME,
-		.owner	= THIS_MODULE,
 		.of_match_table = of_match_ptr(st1232_ts_dt_ids),
 		.pm	= &st1232_ts_pm_ops,
 	},
diff --git a/drivers/input/touchscreen/sur40.c b/drivers/input/touchscreen/sur40.c
index f1cb05148b46..3f117637e832 100644
--- a/drivers/input/touchscreen/sur40.c
+++ b/drivers/input/touchscreen/sur40.c
@@ -1,7 +1,7 @@
 /*
  * Surface2.0/SUR40/PixelSense input driver
  *
- * Copyright (c) 2013 by Florian 'floe' Echtler <floe@butterbrot.org>
+ * Copyright (c) 2014 by Florian 'floe' Echtler <floe@butterbrot.org>
  *
  * Derived from the USB Skeleton driver 1.1,
  * Copyright (c) 2003 Greg Kroah-Hartman (greg@kroah.com)
@@ -12,6 +12,9 @@
  * and from the generic hid-multitouch driver,
  * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
  *
+ * and from the v4l2-pci-skeleton driver,
+ * Copyright (c) Copyright 2014 Cisco Systems, Inc.
+ *
  * 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
@@ -31,6 +34,11 @@
 #include <linux/input-polldev.h>
 #include <linux/input/mt.h>
 #include <linux/usb/input.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-dev.h>
+#include <media/v4l2-ioctl.h>
+#include <media/videobuf2-dma-sg.h>
 
 /* read 512 bytes from endpoint 0x86 -> get header + blobs */
 struct sur40_header {
@@ -82,9 +90,19 @@ struct sur40_data {
 	struct sur40_blob   blobs[];
 } __packed;
 
+/* read 512 bytes from endpoint 0x82 -> get header below
+ * continue reading 16k blocks until header.size bytes read */
+struct sur40_image_header {
+	__le32 magic;     /* "SUBF" */
+	__le32 packet_id;
+	__le32 size;      /* always 0x0007e900 = 960x540 */
+	__le32 timestamp; /* milliseconds (increases by 16 or 17 each frame) */
+	__le32 unknown;   /* "epoch?" always 02/03 00 00 00 */
+} __packed;
 
 /* version information */
 #define DRIVER_SHORT   "sur40"
+#define DRIVER_LONG    "Samsung SUR40"
 #define DRIVER_AUTHOR  "Florian 'floe' Echtler <floe@butterbrot.org>"
 #define DRIVER_DESC    "Surface2.0/SUR40/PixelSense input driver"
 
@@ -99,8 +117,15 @@ struct sur40_data {
 /* touch data endpoint */
 #define TOUCH_ENDPOINT 0x86
 
+/* video data endpoint */
+#define VIDEO_ENDPOINT 0x82
+
+/* video header fields */
+#define VIDEO_HEADER_MAGIC 0x46425553
+#define VIDEO_PACKET_SIZE  16384
+
 /* polling interval (ms) */
-#define POLL_INTERVAL 10
+#define POLL_INTERVAL 4
 
 /* maximum number of contacts FIXME: this is a guess? */
 #define MAX_CONTACTS 64
@@ -113,21 +138,23 @@ struct sur40_data {
 #define SUR40_GET_STATE   0xc5 /*  4 bytes state (?) */
 #define SUR40_GET_SENSORS 0xb1 /*  8 bytes sensors   */
 
-/*
- * Note: an earlier, non-public version of this driver used USB_RECIP_ENDPOINT
- * here by mistake which is very likely to have corrupted the firmware EEPROM
- * on two separate SUR40 devices. Thanks to Alan Stern who spotted this bug.
- * Should you ever run into a similar problem, the background story to this
- * incident and instructions on how to fix the corrupted EEPROM are available
- * at https://floe.butterbrot.org/matrix/hacking/surface/brick.html
-*/
-
+/* master device state */
 struct sur40_state {
 
 	struct usb_device *usbdev;
 	struct device *dev;
 	struct input_polled_dev *input;
 
+	struct v4l2_device v4l2;
+	struct video_device vdev;
+	struct mutex lock;
+
+	struct vb2_queue queue;
+	struct vb2_alloc_ctx *alloc_ctx;
+	struct list_head buf_list;
+	spinlock_t qlock;
+	int sequence;
+
 	struct sur40_data *bulk_in_buffer;
 	size_t bulk_in_size;
 	u8 bulk_in_epaddr;
@@ -135,6 +162,27 @@ struct sur40_state {
 	char phys[64];
 };
 
+struct sur40_buffer {
+	struct vb2_buffer vb;
+	struct list_head list;
+};
+
+/* forward declarations */
+static const struct video_device sur40_video_device;
+static const struct v4l2_pix_format sur40_video_format;
+static const struct vb2_queue sur40_queue;
+static void sur40_process_video(struct sur40_state *sur40);
+
+/*
+ * Note: an earlier, non-public version of this driver used USB_RECIP_ENDPOINT
+ * here by mistake which is very likely to have corrupted the firmware EEPROM
+ * on two separate SUR40 devices. Thanks to Alan Stern who spotted this bug.
+ * Should you ever run into a similar problem, the background story to this
+ * incident and instructions on how to fix the corrupted EEPROM are available
+ * at https://floe.butterbrot.org/matrix/hacking/surface/brick.html
+*/
+
+/* command wrapper */
 static int sur40_command(struct sur40_state *dev,
 			 u8 command, u16 index, void *buffer, u16 size)
 {
@@ -247,7 +295,6 @@ static void sur40_report_blob(struct sur40_blob *blob, struct input_dev *input)
 /* core function: poll for new input data */
 static void sur40_poll(struct input_polled_dev *polldev)
 {
-
 	struct sur40_state *sur40 = polldev->private;
 	struct input_dev *input = polldev->input;
 	int result, bulk_read, need_blobs, packet_blobs, i;
@@ -295,7 +342,7 @@ static void sur40_poll(struct input_polled_dev *polldev)
 		 * instead of at the end.
 		 */
 		if (packet_id != header->packet_id)
-			dev_warn(sur40->dev, "packet ID mismatch\n");
+			dev_dbg(sur40->dev, "packet ID mismatch\n");
 
 		packet_blobs = result / sizeof(struct sur40_blob);
 		dev_dbg(sur40->dev, "received %d blobs\n", packet_blobs);
@@ -314,6 +361,97 @@ static void sur40_poll(struct input_polled_dev *polldev)
 
 	input_mt_sync_frame(input);
 	input_sync(input);
+
+	sur40_process_video(sur40);
+}
+
+/* deal with video data */
+static void sur40_process_video(struct sur40_state *sur40)
+{
+
+	struct sur40_image_header *img = (void *)(sur40->bulk_in_buffer);
+	struct sur40_buffer *new_buf;
+	struct usb_sg_request sgr;
+	struct sg_table *sgt;
+	int result, bulk_read;
+
+	if (!vb2_start_streaming_called(&sur40->queue))
+		return;
+
+	/* get a new buffer from the list */
+	spin_lock(&sur40->qlock);
+	if (list_empty(&sur40->buf_list)) {
+		dev_dbg(sur40->dev, "buffer queue empty\n");
+		spin_unlock(&sur40->qlock);
+		return;
+	}
+	new_buf = list_entry(sur40->buf_list.next, struct sur40_buffer, list);
+	list_del(&new_buf->list);
+	spin_unlock(&sur40->qlock);
+
+	dev_dbg(sur40->dev, "buffer acquired\n");
+
+	/* retrieve data via bulk read */
+	result = usb_bulk_msg(sur40->usbdev,
+			usb_rcvbulkpipe(sur40->usbdev, VIDEO_ENDPOINT),
+			sur40->bulk_in_buffer, sur40->bulk_in_size,
+			&bulk_read, 1000);
+
+	if (result < 0) {
+		dev_err(sur40->dev, "error in usb_bulk_read\n");
+		goto err_poll;
+	}
+
+	if (bulk_read != sizeof(struct sur40_image_header)) {
+		dev_err(sur40->dev, "received %d bytes (%zd expected)\n",
+			bulk_read, sizeof(struct sur40_image_header));
+		goto err_poll;
+	}
+
+	if (le32_to_cpu(img->magic) != VIDEO_HEADER_MAGIC) {
+		dev_err(sur40->dev, "image magic mismatch\n");
+		goto err_poll;
+	}
+
+	if (le32_to_cpu(img->size) != sur40_video_format.sizeimage) {
+		dev_err(sur40->dev, "image size mismatch\n");
+		goto err_poll;
+	}
+
+	dev_dbg(sur40->dev, "header acquired\n");
+
+	sgt = vb2_dma_sg_plane_desc(&new_buf->vb, 0);
+
+	result = usb_sg_init(&sgr, sur40->usbdev,
+		usb_rcvbulkpipe(sur40->usbdev, VIDEO_ENDPOINT), 0,
+		sgt->sgl, sgt->nents, sur40_video_format.sizeimage, 0);
+	if (result < 0) {
+		dev_err(sur40->dev, "error %d in usb_sg_init\n", result);
+		goto err_poll;
+	}
+
+	usb_sg_wait(&sgr);
+	if (sgr.status < 0) {
+		dev_err(sur40->dev, "error %d in usb_sg_wait\n", sgr.status);
+		goto err_poll;
+	}
+
+	dev_dbg(sur40->dev, "image acquired\n");
+
+	/* return error if streaming was stopped in the meantime */
+	if (sur40->sequence == -1)
+		goto err_poll;
+
+	/* mark as finished */
+	v4l2_get_timestamp(&new_buf->vb.v4l2_buf.timestamp);
+	new_buf->vb.v4l2_buf.sequence = sur40->sequence++;
+	new_buf->vb.v4l2_buf.field = V4L2_FIELD_NONE;
+	vb2_buffer_done(&new_buf->vb, VB2_BUF_STATE_DONE);
+	dev_dbg(sur40->dev, "buffer marked done\n");
+	return;
+
+err_poll:
+	vb2_buffer_done(&new_buf->vb, VB2_BUF_STATE_ERROR);
 }
 
 /* Initialize input device parameters. */
@@ -377,6 +515,11 @@ static int sur40_probe(struct usb_interface *interface,
 		goto err_free_dev;
 	}
 
+	/* initialize locks/lists */
+	INIT_LIST_HEAD(&sur40->buf_list);
+	spin_lock_init(&sur40->qlock);
+	mutex_init(&sur40->lock);
+
 	/* Set up polled input device control structure */
 	poll_dev->private = sur40;
 	poll_dev->poll_interval = POLL_INTERVAL;
@@ -387,7 +530,7 @@ static int sur40_probe(struct usb_interface *interface,
 	/* Set up regular input device structure */
 	sur40_input_setup(poll_dev->input);
 
-	poll_dev->input->name = "Samsung SUR40";
+	poll_dev->input->name = DRIVER_LONG;
 	usb_to_input_id(usbdev, &poll_dev->input->id);
 	usb_make_path(usbdev, sur40->phys, sizeof(sur40->phys));
 	strlcat(sur40->phys, "/input0", sizeof(sur40->phys));
@@ -408,6 +551,7 @@ static int sur40_probe(struct usb_interface *interface,
 		goto err_free_polldev;
 	}
 
+	/* register the polled input device */
 	error = input_register_polled_device(poll_dev);
 	if (error) {
 		dev_err(&interface->dev,
@@ -415,12 +559,55 @@ static int sur40_probe(struct usb_interface *interface,
 		goto err_free_buffer;
 	}
 
+	/* register the video master device */
+	snprintf(sur40->v4l2.name, sizeof(sur40->v4l2.name), "%s", DRIVER_LONG);
+	error = v4l2_device_register(sur40->dev, &sur40->v4l2);
+	if (error) {
+		dev_err(&interface->dev,
+			"Unable to register video master device.");
+		goto err_unreg_v4l2;
+	}
+
+	/* initialize the lock and subdevice */
+	sur40->queue = sur40_queue;
+	sur40->queue.drv_priv = sur40;
+	sur40->queue.lock = &sur40->lock;
+
+	/* initialize the queue */
+	error = vb2_queue_init(&sur40->queue);
+	if (error)
+		goto err_unreg_v4l2;
+
+	sur40->alloc_ctx = vb2_dma_sg_init_ctx(sur40->dev);
+	if (IS_ERR(sur40->alloc_ctx)) {
+		dev_err(sur40->dev, "Can't allocate buffer context");
+		error = PTR_ERR(sur40->alloc_ctx);
+		goto err_unreg_v4l2;
+	}
+
+	sur40->vdev = sur40_video_device;
+	sur40->vdev.v4l2_dev = &sur40->v4l2;
+	sur40->vdev.lock = &sur40->lock;
+	sur40->vdev.queue = &sur40->queue;
+	video_set_drvdata(&sur40->vdev, sur40);
+
+	error = video_register_device(&sur40->vdev, VFL_TYPE_GRABBER, -1);
+	if (error) {
+		dev_err(&interface->dev,
+			"Unable to register video subdevice.");
+		goto err_unreg_video;
+	}
+
 	/* we can register the device now, as it is ready */
 	usb_set_intfdata(interface, sur40);
 	dev_dbg(&interface->dev, "%s is now attached\n", DRIVER_DESC);
 
 	return 0;
 
+err_unreg_video:
+	video_unregister_device(&sur40->vdev);
+err_unreg_v4l2:
+	v4l2_device_unregister(&sur40->v4l2);
 err_free_buffer:
 	kfree(sur40->bulk_in_buffer);
 err_free_polldev:
@@ -436,6 +623,10 @@ static void sur40_disconnect(struct usb_interface *interface)
 {
 	struct sur40_state *sur40 = usb_get_intfdata(interface);
 
+	video_unregister_device(&sur40->vdev);
+	v4l2_device_unregister(&sur40->v4l2);
+	vb2_dma_sg_cleanup_ctx(sur40->alloc_ctx);
+
 	input_unregister_polled_device(sur40->input);
 	input_free_polled_device(sur40->input);
 	kfree(sur40->bulk_in_buffer);
@@ -445,12 +636,274 @@ static void sur40_disconnect(struct usb_interface *interface)
 	dev_dbg(&interface->dev, "%s is now disconnected\n", DRIVER_DESC);
 }
 
+/*
+ * Setup the constraints of the queue: besides setting the number of planes
+ * per buffer and the size and allocation context of each plane, it also
+ * checks if sufficient buffers have been allocated. Usually 3 is a good
+ * minimum number: many DMA engines need a minimum of 2 buffers in the
+ * queue and you need to have another available for userspace processing.
+ */
+static int sur40_queue_setup(struct vb2_queue *q, const struct v4l2_format *fmt,
+		       unsigned int *nbuffers, unsigned int *nplanes,
+		       unsigned int sizes[], void *alloc_ctxs[])
+{
+	struct sur40_state *sur40 = vb2_get_drv_priv(q);
+
+	if (q->num_buffers + *nbuffers < 3)
+		*nbuffers = 3 - q->num_buffers;
+
+	if (fmt && fmt->fmt.pix.sizeimage < sur40_video_format.sizeimage)
+		return -EINVAL;
+
+	*nplanes = 1;
+	sizes[0] = fmt ? fmt->fmt.pix.sizeimage : sur40_video_format.sizeimage;
+	alloc_ctxs[0] = sur40->alloc_ctx;
+
+	return 0;
+}
+
+/*
+ * Prepare the buffer for queueing to the DMA engine: check and set the
+ * payload size.
+ */
+static int sur40_buffer_prepare(struct vb2_buffer *vb)
+{
+	struct sur40_state *sur40 = vb2_get_drv_priv(vb->vb2_queue);
+	unsigned long size = sur40_video_format.sizeimage;
+
+	if (vb2_plane_size(vb, 0) < size) {
+		dev_err(&sur40->usbdev->dev, "buffer too small (%lu < %lu)\n",
+			 vb2_plane_size(vb, 0), size);
+		return -EINVAL;
+	}
+
+	vb2_set_plane_payload(vb, 0, size);
+	return 0;
+}
+
+/*
+ * Queue this buffer to the DMA engine.
+ */
+static void sur40_buffer_queue(struct vb2_buffer *vb)
+{
+	struct sur40_state *sur40 = vb2_get_drv_priv(vb->vb2_queue);
+	struct sur40_buffer *buf = (struct sur40_buffer *)vb;
+
+	spin_lock(&sur40->qlock);
+	list_add_tail(&buf->list, &sur40->buf_list);
+	spin_unlock(&sur40->qlock);
+}
+
+static void return_all_buffers(struct sur40_state *sur40,
+			       enum vb2_buffer_state state)
+{
+	struct sur40_buffer *buf, *node;
+
+	spin_lock(&sur40->qlock);
+	list_for_each_entry_safe(buf, node, &sur40->buf_list, list) {
+		vb2_buffer_done(&buf->vb, state);
+		list_del(&buf->list);
+	}
+	spin_unlock(&sur40->qlock);
+}
+
+/*
+ * Start streaming. First check if the minimum number of buffers have been
+ * queued. If not, then return -ENOBUFS and the vb2 framework will call
+ * this function again the next time a buffer has been queued until enough
+ * buffers are available to actually start the DMA engine.
+ */
+static int sur40_start_streaming(struct vb2_queue *vq, unsigned int count)
+{
+	struct sur40_state *sur40 = vb2_get_drv_priv(vq);
+
+	sur40->sequence = 0;
+	return 0;
+}
+
+/*
+ * Stop the DMA engine. Any remaining buffers in the DMA queue are dequeued
+ * and passed on to the vb2 framework marked as STATE_ERROR.
+ */
+static void sur40_stop_streaming(struct vb2_queue *vq)
+{
+	struct sur40_state *sur40 = vb2_get_drv_priv(vq);
+	sur40->sequence = -1;
+
+	/* Release all active buffers */
+	return_all_buffers(sur40, VB2_BUF_STATE_ERROR);
+}
+
+/* V4L ioctl */
+static int sur40_vidioc_querycap(struct file *file, void *priv,
+				 struct v4l2_capability *cap)
+{
+	struct sur40_state *sur40 = video_drvdata(file);
+
+	strlcpy(cap->driver, DRIVER_SHORT, sizeof(cap->driver));
+	strlcpy(cap->card, DRIVER_LONG, sizeof(cap->card));
+	usb_make_path(sur40->usbdev, cap->bus_info, sizeof(cap->bus_info));
+	cap->device_caps = V4L2_CAP_VIDEO_CAPTURE |
+		V4L2_CAP_READWRITE |
+		V4L2_CAP_STREAMING;
+	cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
+	return 0;
+}
+
+static int sur40_vidioc_enum_input(struct file *file, void *priv,
+				   struct v4l2_input *i)
+{
+	if (i->index != 0)
+		return -EINVAL;
+	i->type = V4L2_INPUT_TYPE_CAMERA;
+	i->std = V4L2_STD_UNKNOWN;
+	strlcpy(i->name, "In-Cell Sensor", sizeof(i->name));
+	i->capabilities = 0;
+	return 0;
+}
+
+static int sur40_vidioc_s_input(struct file *file, void *priv, unsigned int i)
+{
+	return (i == 0) ? 0 : -EINVAL;
+}
+
+static int sur40_vidioc_g_input(struct file *file, void *priv, unsigned int *i)
+{
+	*i = 0;
+	return 0;
+}
+
+static int sur40_vidioc_fmt(struct file *file, void *priv,
+			    struct v4l2_format *f)
+{
+	f->fmt.pix = sur40_video_format;
+	return 0;
+}
+
+static int sur40_vidioc_enum_fmt(struct file *file, void *priv,
+				 struct v4l2_fmtdesc *f)
+{
+	if (f->index != 0)
+		return -EINVAL;
+	strlcpy(f->description, "8-bit greyscale", sizeof(f->description));
+	f->pixelformat = V4L2_PIX_FMT_GREY;
+	f->flags = 0;
+	return 0;
+}
+
+static int sur40_vidioc_enum_framesizes(struct file *file, void *priv,
+					struct v4l2_frmsizeenum *f)
+{
+	if ((f->index != 0) || (f->pixel_format != V4L2_PIX_FMT_GREY))
+		return -EINVAL;
+
+	f->type = V4L2_FRMSIZE_TYPE_DISCRETE;
+	f->discrete.width  = sur40_video_format.width;
+	f->discrete.height = sur40_video_format.height;
+	return 0;
+}
+
+static int sur40_vidioc_enum_frameintervals(struct file *file, void *priv,
+					    struct v4l2_frmivalenum *f)
+{
+	if ((f->index > 1) || (f->pixel_format != V4L2_PIX_FMT_GREY)
+		|| (f->width  != sur40_video_format.width)
+		|| (f->height != sur40_video_format.height))
+			return -EINVAL;
+
+	f->type = V4L2_FRMIVAL_TYPE_DISCRETE;
+	f->discrete.denominator  = 60/(f->index+1);
+	f->discrete.numerator = 1;
+	return 0;
+}
+
+
 static const struct usb_device_id sur40_table[] = {
 	{ USB_DEVICE(ID_MICROSOFT, ID_SUR40) },  /* Samsung SUR40 */
 	{ }                                      /* terminating null entry */
 };
 MODULE_DEVICE_TABLE(usb, sur40_table);
 
+/* V4L2 structures */
+static const struct vb2_ops sur40_queue_ops = {
+	.queue_setup		= sur40_queue_setup,
+	.buf_prepare		= sur40_buffer_prepare,
+	.buf_queue		= sur40_buffer_queue,
+	.start_streaming	= sur40_start_streaming,
+	.stop_streaming		= sur40_stop_streaming,
+	.wait_prepare		= vb2_ops_wait_prepare,
+	.wait_finish		= vb2_ops_wait_finish,
+};
+
+static const struct vb2_queue sur40_queue = {
+	.type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
+	/*
+	 * VB2_USERPTR in currently not enabled: passing a user pointer to
+	 * dma-sg will result in segment sizes that are not a multiple of
+	 * 512 bytes, which is required by the host controller.
+	*/
+	.io_modes = VB2_MMAP | VB2_READ | VB2_DMABUF,
+	.buf_struct_size = sizeof(struct sur40_buffer),
+	.ops = &sur40_queue_ops,
+	.mem_ops = &vb2_dma_sg_memops,
+	.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC,
+	.min_buffers_needed = 3,
+};
+
+static const struct v4l2_file_operations sur40_video_fops = {
+	.owner = THIS_MODULE,
+	.open = v4l2_fh_open,
+	.release = vb2_fop_release,
+	.unlocked_ioctl = video_ioctl2,
+	.read = vb2_fop_read,
+	.mmap = vb2_fop_mmap,
+	.poll = vb2_fop_poll,
+};
+
+static const struct v4l2_ioctl_ops sur40_video_ioctl_ops = {
+
+	.vidioc_querycap	= sur40_vidioc_querycap,
+
+	.vidioc_enum_fmt_vid_cap = sur40_vidioc_enum_fmt,
+	.vidioc_try_fmt_vid_cap	= sur40_vidioc_fmt,
+	.vidioc_s_fmt_vid_cap	= sur40_vidioc_fmt,
+	.vidioc_g_fmt_vid_cap	= sur40_vidioc_fmt,
+
+	.vidioc_enum_framesizes = sur40_vidioc_enum_framesizes,
+	.vidioc_enum_frameintervals = sur40_vidioc_enum_frameintervals,
+
+	.vidioc_enum_input	= sur40_vidioc_enum_input,
+	.vidioc_g_input		= sur40_vidioc_g_input,
+	.vidioc_s_input		= sur40_vidioc_s_input,
+
+	.vidioc_reqbufs		= vb2_ioctl_reqbufs,
+	.vidioc_create_bufs	= vb2_ioctl_create_bufs,
+	.vidioc_querybuf	= vb2_ioctl_querybuf,
+	.vidioc_qbuf		= vb2_ioctl_qbuf,
+	.vidioc_dqbuf		= vb2_ioctl_dqbuf,
+	.vidioc_expbuf		= vb2_ioctl_expbuf,
+
+	.vidioc_streamon	= vb2_ioctl_streamon,
+	.vidioc_streamoff	= vb2_ioctl_streamoff,
+};
+
+static const struct video_device sur40_video_device = {
+	.name = DRIVER_LONG,
+	.fops = &sur40_video_fops,
+	.ioctl_ops = &sur40_video_ioctl_ops,
+	.release = video_device_release_empty,
+};
+
+static const struct v4l2_pix_format sur40_video_format = {
+	.pixelformat = V4L2_PIX_FMT_GREY,
+	.width  = SENSOR_RES_X / 2,
+	.height = SENSOR_RES_Y / 2,
+	.field = V4L2_FIELD_NONE,
+	.colorspace = V4L2_COLORSPACE_SRGB,
+	.bytesperline = SENSOR_RES_X / 2,
+	.sizeimage = (SENSOR_RES_X/2) * (SENSOR_RES_Y/2),
+};
+
 /* USB-specific object needed to register this driver with the USB subsystem. */
 static struct usb_driver sur40_driver = {
 	.name = DRIVER_SHORT,
diff --git a/drivers/input/touchscreen/tsc2005.c b/drivers/input/touchscreen/tsc2005.c
index d8c025b0f88c..0f65d02eeb26 100644
--- a/drivers/input/touchscreen/tsc2005.c
+++ b/drivers/input/touchscreen/tsc2005.c
@@ -30,10 +30,11 @@
 #include <linux/delay.h>
 #include <linux/pm.h>
 #include <linux/of.h>
-#include <linux/of_gpio.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/tsc2005.h>
 #include <linux/regulator/consumer.h>
+#include <linux/regmap.h>
+#include <linux/gpio/consumer.h>
 
 /*
  * The touchscreen interface operates as follows:
@@ -61,16 +62,24 @@
 #define TSC2005_CMD_12BIT		0x04
 
 /* control byte 0 */
-#define TSC2005_REG_READ		0x0001
-#define TSC2005_REG_PND0		0x0002
-#define TSC2005_REG_X			0x0000
-#define TSC2005_REG_Y			0x0008
-#define TSC2005_REG_Z1			0x0010
-#define TSC2005_REG_Z2			0x0018
-#define TSC2005_REG_TEMP_HIGH		0x0050
-#define TSC2005_REG_CFR0		0x0060
-#define TSC2005_REG_CFR1		0x0068
-#define TSC2005_REG_CFR2		0x0070
+#define TSC2005_REG_READ		0x01 /* R/W access */
+#define TSC2005_REG_PND0		0x02 /* Power Not Down Control */
+#define TSC2005_REG_X			(0x0 << 3)
+#define TSC2005_REG_Y			(0x1 << 3)
+#define TSC2005_REG_Z1			(0x2 << 3)
+#define TSC2005_REG_Z2			(0x3 << 3)
+#define TSC2005_REG_AUX			(0x4 << 3)
+#define TSC2005_REG_TEMP1		(0x5 << 3)
+#define TSC2005_REG_TEMP2		(0x6 << 3)
+#define TSC2005_REG_STATUS		(0x7 << 3)
+#define TSC2005_REG_AUX_HIGH		(0x8 << 3)
+#define TSC2005_REG_AUX_LOW		(0x9 << 3)
+#define TSC2005_REG_TEMP_HIGH		(0xA << 3)
+#define TSC2005_REG_TEMP_LOW		(0xB << 3)
+#define TSC2005_REG_CFR0		(0xC << 3)
+#define TSC2005_REG_CFR1		(0xD << 3)
+#define TSC2005_REG_CFR2		(0xE << 3)
+#define TSC2005_REG_CONV_FUNC		(0xF << 3)
 
 /* configuration register 0 */
 #define TSC2005_CFR0_PRECHARGE_276US	0x0040
@@ -112,20 +121,37 @@
 #define TSC2005_SPI_MAX_SPEED_HZ	10000000
 #define TSC2005_PENUP_TIME_MS		40
 
-struct tsc2005_spi_rd {
-	struct spi_transfer	spi_xfer;
-	u32			spi_tx;
-	u32			spi_rx;
+static const struct regmap_range tsc2005_writable_ranges[] = {
+	regmap_reg_range(TSC2005_REG_AUX_HIGH, TSC2005_REG_CFR2),
 };
 
+static const struct regmap_access_table tsc2005_writable_table = {
+	.yes_ranges = tsc2005_writable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(tsc2005_writable_ranges),
+};
+
+static struct regmap_config tsc2005_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 16,
+	.reg_stride = 0x08,
+	.max_register = 0x78,
+	.read_flag_mask = TSC2005_REG_READ,
+	.write_flag_mask = TSC2005_REG_PND0,
+	.wr_table = &tsc2005_writable_table,
+	.use_single_rw = true,
+};
+
+struct tsc2005_data {
+	u16 x;
+	u16 y;
+	u16 z1;
+	u16 z2;
+} __packed;
+#define TSC2005_DATA_REGS 4
+
 struct tsc2005 {
 	struct spi_device	*spi;
-
-	struct spi_message      spi_read_msg;
-	struct tsc2005_spi_rd	spi_x;
-	struct tsc2005_spi_rd	spi_y;
-	struct tsc2005_spi_rd	spi_z1;
-	struct tsc2005_spi_rd	spi_z2;
+	struct regmap		*regmap;
 
 	struct input_dev	*idev;
 	char			phys[32];
@@ -154,7 +180,7 @@ struct tsc2005 {
 
 	struct regulator	*vio;
 
-	int			reset_gpio;
+	struct gpio_desc	*reset_gpio;
 	void			(*set_reset)(bool enable);
 };
 
@@ -182,62 +208,6 @@ static int tsc2005_cmd(struct tsc2005 *ts, u8 cmd)
 	return 0;
 }
 
-static int tsc2005_write(struct tsc2005 *ts, u8 reg, u16 value)
-{
-	u32 tx = ((reg | TSC2005_REG_PND0) << 16) | value;
-	struct spi_transfer xfer = {
-		.tx_buf		= &tx,
-		.len		= 4,
-		.bits_per_word	= 24,
-	};
-	struct spi_message msg;
-	int error;
-
-	spi_message_init(&msg);
-	spi_message_add_tail(&xfer, &msg);
-
-	error = spi_sync(ts->spi, &msg);
-	if (error) {
-		dev_err(&ts->spi->dev,
-			"%s: failed, register: %x, value: %x, error: %d\n",
-			__func__, reg, value, error);
-		return error;
-	}
-
-	return 0;
-}
-
-static void tsc2005_setup_read(struct tsc2005_spi_rd *rd, u8 reg, bool last)
-{
-	memset(rd, 0, sizeof(*rd));
-
-	rd->spi_tx		   = (reg | TSC2005_REG_READ) << 16;
-	rd->spi_xfer.tx_buf	   = &rd->spi_tx;
-	rd->spi_xfer.rx_buf	   = &rd->spi_rx;
-	rd->spi_xfer.len	   = 4;
-	rd->spi_xfer.bits_per_word = 24;
-	rd->spi_xfer.cs_change	   = !last;
-}
-
-static int tsc2005_read(struct tsc2005 *ts, u8 reg, u16 *value)
-{
-	struct tsc2005_spi_rd spi_rd;
-	struct spi_message msg;
-	int error;
-
-	tsc2005_setup_read(&spi_rd, reg, true);
-
-	spi_message_init(&msg);
-	spi_message_add_tail(&spi_rd.spi_xfer, &msg);
-
-	error = spi_sync(ts->spi, &msg);
-	if (error)
-		return error;
-
-	*value = spi_rd.spi_rx;
-	return 0;
-}
-
 static void tsc2005_update_pen_state(struct tsc2005 *ts,
 				     int x, int y, int pressure)
 {
@@ -266,26 +236,23 @@ static irqreturn_t tsc2005_irq_thread(int irq, void *_ts)
 	struct tsc2005 *ts = _ts;
 	unsigned long flags;
 	unsigned int pressure;
-	u32 x, y;
-	u32 z1, z2;
+	struct tsc2005_data tsdata;
 	int error;
 
 	/* read the coordinates */
-	error = spi_sync(ts->spi, &ts->spi_read_msg);
+	error = regmap_bulk_read(ts->regmap, TSC2005_REG_X, &tsdata,
+				 TSC2005_DATA_REGS);
 	if (unlikely(error))
 		goto out;
 
-	x = ts->spi_x.spi_rx;
-	y = ts->spi_y.spi_rx;
-	z1 = ts->spi_z1.spi_rx;
-	z2 = ts->spi_z2.spi_rx;
-
 	/* validate position */
-	if (unlikely(x > MAX_12BIT || y > MAX_12BIT))
+	if (unlikely(tsdata.x > MAX_12BIT || tsdata.y > MAX_12BIT))
 		goto out;
 
 	/* Skip reading if the pressure components are out of range */
-	if (unlikely(z1 == 0 || z2 > MAX_12BIT || z1 >= z2))
+	if (unlikely(tsdata.z1 == 0 || tsdata.z2 > MAX_12BIT))
+		goto out;
+	if (unlikely(tsdata.z1 >= tsdata.z2))
 		goto out;
 
        /*
@@ -293,8 +260,8 @@ static irqreturn_t tsc2005_irq_thread(int irq, void *_ts)
 	* the value before pen-up - that implies SPI fed us stale data
 	*/
 	if (!ts->pen_down &&
-	    ts->in_x == x && ts->in_y == y &&
-	    ts->in_z1 == z1 && ts->in_z2 == z2) {
+	    ts->in_x == tsdata.x && ts->in_y == tsdata.y &&
+	    ts->in_z1 == tsdata.z1 && ts->in_z2 == tsdata.z2) {
 		goto out;
 	}
 
@@ -302,20 +269,20 @@ static irqreturn_t tsc2005_irq_thread(int irq, void *_ts)
 	 * At this point we are happy we have a valid and useful reading.
 	 * Remember it for later comparisons. We may now begin downsampling.
 	 */
-	ts->in_x = x;
-	ts->in_y = y;
-	ts->in_z1 = z1;
-	ts->in_z2 = z2;
+	ts->in_x = tsdata.x;
+	ts->in_y = tsdata.y;
+	ts->in_z1 = tsdata.z1;
+	ts->in_z2 = tsdata.z2;
 
 	/* Compute touch pressure resistance using equation #1 */
-	pressure = x * (z2 - z1) / z1;
+	pressure = tsdata.x * (tsdata.z2 - tsdata.z1) / tsdata.z1;
 	pressure = pressure * ts->x_plate_ohm / 4096;
 	if (unlikely(pressure > MAX_12BIT))
 		goto out;
 
 	spin_lock_irqsave(&ts->lock, flags);
 
-	tsc2005_update_pen_state(ts, x, y, pressure);
+	tsc2005_update_pen_state(ts, tsdata.x, tsdata.y, pressure);
 	mod_timer(&ts->penup_timer,
 		  jiffies + msecs_to_jiffies(TSC2005_PENUP_TIME_MS));
 
@@ -338,9 +305,9 @@ static void tsc2005_penup_timer(unsigned long data)
 
 static void tsc2005_start_scan(struct tsc2005 *ts)
 {
-	tsc2005_write(ts, TSC2005_REG_CFR0, TSC2005_CFR0_INITVALUE);
-	tsc2005_write(ts, TSC2005_REG_CFR1, TSC2005_CFR1_INITVALUE);
-	tsc2005_write(ts, TSC2005_REG_CFR2, TSC2005_CFR2_INITVALUE);
+	regmap_write(ts->regmap, TSC2005_REG_CFR0, TSC2005_CFR0_INITVALUE);
+	regmap_write(ts->regmap, TSC2005_REG_CFR1, TSC2005_CFR1_INITVALUE);
+	regmap_write(ts->regmap, TSC2005_REG_CFR2, TSC2005_CFR2_INITVALUE);
 	tsc2005_cmd(ts, TSC2005_CMD_NORMAL);
 }
 
@@ -351,8 +318,8 @@ static void tsc2005_stop_scan(struct tsc2005 *ts)
 
 static void tsc2005_set_reset(struct tsc2005 *ts, bool enable)
 {
-	if (ts->reset_gpio >= 0)
-		gpio_set_value(ts->reset_gpio, enable);
+	if (ts->reset_gpio)
+		gpiod_set_value_cansleep(ts->reset_gpio, enable);
 	else if (ts->set_reset)
 		ts->set_reset(enable);
 }
@@ -388,11 +355,10 @@ static ssize_t tsc2005_selftest_show(struct device *dev,
 				     struct device_attribute *attr,
 				     char *buf)
 {
-	struct spi_device *spi = to_spi_device(dev);
-	struct tsc2005 *ts = spi_get_drvdata(spi);
-	u16 temp_high;
-	u16 temp_high_orig;
-	u16 temp_high_test;
+	struct tsc2005 *ts = dev_get_drvdata(dev);
+	unsigned int temp_high;
+	unsigned int temp_high_orig;
+	unsigned int temp_high_test;
 	bool success = true;
 	int error;
 
@@ -403,7 +369,7 @@ static ssize_t tsc2005_selftest_show(struct device *dev,
 	 */
 	__tsc2005_disable(ts);
 
-	error = tsc2005_read(ts, TSC2005_REG_TEMP_HIGH, &temp_high_orig);
+	error = regmap_read(ts->regmap, TSC2005_REG_TEMP_HIGH, &temp_high_orig);
 	if (error) {
 		dev_warn(dev, "selftest failed: read error %d\n", error);
 		success = false;
@@ -412,14 +378,14 @@ static ssize_t tsc2005_selftest_show(struct device *dev,
 
 	temp_high_test = (temp_high_orig - 1) & MAX_12BIT;
 
-	error = tsc2005_write(ts, TSC2005_REG_TEMP_HIGH, temp_high_test);
+	error = regmap_write(ts->regmap, TSC2005_REG_TEMP_HIGH, temp_high_test);
 	if (error) {
 		dev_warn(dev, "selftest failed: write error %d\n", error);
 		success = false;
 		goto out;
 	}
 
-	error = tsc2005_read(ts, TSC2005_REG_TEMP_HIGH, &temp_high);
+	error = regmap_read(ts->regmap, TSC2005_REG_TEMP_HIGH, &temp_high);
 	if (error) {
 		dev_warn(dev, "selftest failed: read error %d after write\n",
 			 error);
@@ -442,7 +408,7 @@ static ssize_t tsc2005_selftest_show(struct device *dev,
 		goto out;
 
 	/* test that the reset really happened */
-	error = tsc2005_read(ts, TSC2005_REG_TEMP_HIGH, &temp_high);
+	error = regmap_read(ts->regmap, TSC2005_REG_TEMP_HIGH, &temp_high);
 	if (error) {
 		dev_warn(dev, "selftest failed: read error %d after reset\n",
 			 error);
@@ -474,8 +440,7 @@ static umode_t tsc2005_attr_is_visible(struct kobject *kobj,
 				      struct attribute *attr, int n)
 {
 	struct device *dev = container_of(kobj, struct device, kobj);
-	struct spi_device *spi = to_spi_device(dev);
-	struct tsc2005 *ts = spi_get_drvdata(spi);
+	struct tsc2005 *ts = dev_get_drvdata(dev);
 	umode_t mode = attr->mode;
 
 	if (attr == &dev_attr_selftest.attr) {
@@ -495,7 +460,7 @@ static void tsc2005_esd_work(struct work_struct *work)
 {
 	struct tsc2005 *ts = container_of(work, struct tsc2005, esd_work.work);
 	int error;
-	u16 r;
+	unsigned int r;
 
 	if (!mutex_trylock(&ts->mutex)) {
 		/*
@@ -511,7 +476,7 @@ static void tsc2005_esd_work(struct work_struct *work)
 		goto out;
 
 	/* We should be able to read register without disabling interrupts. */
-	error = tsc2005_read(ts, TSC2005_REG_CFR0, &r);
+	error = regmap_read(ts->regmap, TSC2005_REG_CFR0, &r);
 	if (!error &&
 	    !((r ^ TSC2005_CFR0_INITVALUE) & TSC2005_CFR0_RW_MASK)) {
 		goto out;
@@ -575,20 +540,6 @@ static void tsc2005_close(struct input_dev *input)
 	mutex_unlock(&ts->mutex);
 }
 
-static void tsc2005_setup_spi_xfer(struct tsc2005 *ts)
-{
-	tsc2005_setup_read(&ts->spi_x, TSC2005_REG_X, false);
-	tsc2005_setup_read(&ts->spi_y, TSC2005_REG_Y, false);
-	tsc2005_setup_read(&ts->spi_z1, TSC2005_REG_Z1, false);
-	tsc2005_setup_read(&ts->spi_z2, TSC2005_REG_Z2, true);
-
-	spi_message_init(&ts->spi_read_msg);
-	spi_message_add_tail(&ts->spi_x.spi_xfer, &ts->spi_read_msg);
-	spi_message_add_tail(&ts->spi_y.spi_xfer, &ts->spi_read_msg);
-	spi_message_add_tail(&ts->spi_z1.spi_xfer, &ts->spi_read_msg);
-	spi_message_add_tail(&ts->spi_z2.spi_xfer, &ts->spi_read_msg);
-}
-
 static int tsc2005_probe(struct spi_device *spi)
 {
 	const struct tsc2005_platform_data *pdata = dev_get_platdata(&spi->dev);
@@ -653,37 +604,30 @@ static int tsc2005_probe(struct spi_device *spi)
 	ts->spi = spi;
 	ts->idev = input_dev;
 
+	ts->regmap = devm_regmap_init_spi(spi, &tsc2005_regmap_config);
+	if (IS_ERR(ts->regmap))
+		return PTR_ERR(ts->regmap);
+
 	ts->x_plate_ohm = x_plate_ohm;
 	ts->esd_timeout = esd_timeout;
 
-	if (np) {
-		ts->reset_gpio = of_get_named_gpio(np, "reset-gpios", 0);
-		if (ts->reset_gpio == -EPROBE_DEFER)
-			return ts->reset_gpio;
-		if (ts->reset_gpio < 0) {
-			dev_err(&spi->dev, "error acquiring reset gpio: %d\n",
-				ts->reset_gpio);
-			return ts->reset_gpio;
-		}
+	ts->reset_gpio = devm_gpiod_get_optional(&spi->dev, "reset",
+						 GPIOD_OUT_HIGH);
+	if (IS_ERR(ts->reset_gpio)) {
+		error = PTR_ERR(ts->reset_gpio);
+		dev_err(&spi->dev, "error acquiring reset gpio: %d\n", error);
+		return error;
+	}
 
-		error = devm_gpio_request_one(&spi->dev, ts->reset_gpio, 0,
-					      "reset-gpios");
-		if (error) {
-			dev_err(&spi->dev, "error requesting reset gpio: %d\n",
-				error);
-			return error;
-		}
+	ts->vio = devm_regulator_get_optional(&spi->dev, "vio");
+	if (IS_ERR(ts->vio)) {
+		error = PTR_ERR(ts->vio);
+		dev_err(&spi->dev, "vio regulator missing (%d)", error);
+		return error;
+	}
 
-		ts->vio = devm_regulator_get(&spi->dev, "vio");
-		if (IS_ERR(ts->vio)) {
-			error = PTR_ERR(ts->vio);
-			dev_err(&spi->dev, "vio regulator missing (%d)", error);
-			return error;
-		}
-	} else {
-		ts->reset_gpio = -1;
+	if (!ts->reset_gpio && pdata)
 		ts->set_reset = pdata->set_reset;
-	}
 
 	mutex_init(&ts->mutex);
 
@@ -692,8 +636,6 @@ static int tsc2005_probe(struct spi_device *spi)
 
 	INIT_DELAYED_WORK(&ts->esd_work, tsc2005_esd_work);
 
-	tsc2005_setup_spi_xfer(ts);
-
 	snprintf(ts->phys, sizeof(ts->phys),
 		 "%s/input-ts", dev_name(&spi->dev));
 
@@ -709,7 +651,7 @@ static int tsc2005_probe(struct spi_device *spi)
 	input_set_abs_params(input_dev, ABS_PRESSURE, 0, max_p, fudge_p, 0);
 
 	if (np)
-		touchscreen_parse_of_params(input_dev, false);
+		touchscreen_parse_properties(input_dev, false);
 
 	input_dev->open = tsc2005_open;
 	input_dev->close = tsc2005_close;
@@ -735,7 +677,7 @@ static int tsc2005_probe(struct spi_device *spi)
 			return error;
 	}
 
-	spi_set_drvdata(spi, ts);
+	dev_set_drvdata(&spi->dev, ts);
 	error = sysfs_create_group(&spi->dev.kobj, &tsc2005_attr_group);
 	if (error) {
 		dev_err(&spi->dev,
@@ -763,7 +705,7 @@ disable_regulator:
 
 static int tsc2005_remove(struct spi_device *spi)
 {
-	struct tsc2005 *ts = spi_get_drvdata(spi);
+	struct tsc2005 *ts = dev_get_drvdata(&spi->dev);
 
 	sysfs_remove_group(&spi->dev.kobj, &tsc2005_attr_group);
 
@@ -775,8 +717,7 @@ static int tsc2005_remove(struct spi_device *spi)
 
 static int __maybe_unused tsc2005_suspend(struct device *dev)
 {
-	struct spi_device *spi = to_spi_device(dev);
-	struct tsc2005 *ts = spi_get_drvdata(spi);
+	struct tsc2005 *ts = dev_get_drvdata(dev);
 
 	mutex_lock(&ts->mutex);
 
@@ -792,8 +733,7 @@ static int __maybe_unused tsc2005_suspend(struct device *dev)
 
 static int __maybe_unused tsc2005_resume(struct device *dev)
 {
-	struct spi_device *spi = to_spi_device(dev);
-	struct tsc2005 *ts = spi_get_drvdata(spi);
+	struct tsc2005 *ts = dev_get_drvdata(dev);
 
 	mutex_lock(&ts->mutex);
 
diff --git a/drivers/input/touchscreen/tsc2007.c b/drivers/input/touchscreen/tsc2007.c
index ccc8aa615709..5d0cd51c6f41 100644
--- a/drivers/input/touchscreen/tsc2007.c
+++ b/drivers/input/touchscreen/tsc2007.c
@@ -482,7 +482,6 @@ MODULE_DEVICE_TABLE(of, tsc2007_of_match);
 
 static struct i2c_driver tsc2007_driver = {
 	.driver = {
-		.owner	= THIS_MODULE,
 		.name	= "tsc2007",
 		.of_match_table = of_match_ptr(tsc2007_of_match),
 	},
diff --git a/drivers/input/touchscreen/wacom_i2c.c b/drivers/input/touchscreen/wacom_i2c.c
index 32f8ac003936..8d7a2852caef 100644
--- a/drivers/input/touchscreen/wacom_i2c.c
+++ b/drivers/input/touchscreen/wacom_i2c.c
@@ -271,7 +271,6 @@ MODULE_DEVICE_TABLE(i2c, wacom_i2c_id);
 static struct i2c_driver wacom_i2c_driver = {
 	.driver	= {
 		.name	= "wacom_i2c",
-		.owner	= THIS_MODULE,
 		.pm	= &wacom_i2c_pm,
 	},
 
diff --git a/drivers/input/touchscreen/wdt87xx_i2c.c b/drivers/input/touchscreen/wdt87xx_i2c.c
index fb92ae1c5fae..515c20a6e10f 100644
--- a/drivers/input/touchscreen/wdt87xx_i2c.c
+++ b/drivers/input/touchscreen/wdt87xx_i2c.c
@@ -23,7 +23,7 @@
 #include <asm/unaligned.h>
 
 #define WDT87XX_NAME		"wdt87xx_i2c"
-#define WDT87XX_DRV_VER		"0.9.6"
+#define WDT87XX_DRV_VER		"0.9.7"
 #define WDT87XX_FW_NAME		"wdt87xx_fw.bin"
 #define WDT87XX_CFG_NAME	"wdt87xx_cfg.bin"
 
@@ -85,6 +85,11 @@
 #define CTL_PARAM_OFFSET_PHY_H		24
 #define CTL_PARAM_OFFSET_FACTOR		32
 
+/* The definition of the device descriptor */
+#define WDT_GD_DEVICE			1
+#define DEV_DESC_OFFSET_VID		8
+#define DEV_DESC_OFFSET_PID		10
+
 /* Communication commands */
 #define PACKET_SIZE			56
 #define VND_REQ_READ			0x06
@@ -152,6 +157,7 @@
 /* Controller requires minimum 300us between commands */
 #define WDT_COMMAND_DELAY_MS		2
 #define WDT_FLASH_WRITE_DELAY_MS	4
+#define WDT_FW_RESET_TIME		2500
 
 struct wdt87xx_sys_param {
 	u16	fw_id;
@@ -165,6 +171,8 @@ struct wdt87xx_sys_param {
 	u16	scaling_factor;
 	u32	max_x;
 	u32	max_y;
+	u16	vendor_id;
+	u16	product_id;
 };
 
 struct wdt87xx_data {
@@ -208,6 +216,32 @@ static int wdt87xx_i2c_xfer(struct i2c_client *client,
 	return 0;
 }
 
+static int wdt87xx_get_desc(struct i2c_client *client, u8 desc_idx,
+			    u8 *buf, size_t len)
+{
+	u8 tx_buf[] = { 0x22, 0x00, 0x10, 0x0E, 0x23, 0x00 };
+	int error;
+
+	tx_buf[2] |= desc_idx & 0xF;
+
+	error = wdt87xx_i2c_xfer(client, tx_buf, sizeof(tx_buf),
+				 buf, len);
+	if (error) {
+		dev_err(&client->dev, "get desc failed: %d\n", error);
+		return error;
+	}
+
+	if (buf[0] != len) {
+		dev_err(&client->dev, "unexpected response to get desc: %d\n",
+			buf[0]);
+		return -EINVAL;
+	}
+
+	mdelay(WDT_COMMAND_DELAY_MS);
+
+	return 0;
+}
+
 static int wdt87xx_get_string(struct i2c_client *client, u8 str_idx,
 			      u8 *buf, size_t len)
 {
@@ -373,7 +407,7 @@ static int wdt87xx_sw_reset(struct i2c_client *client)
 	}
 
 	/* Wait the device to be ready */
-	msleep(200);
+	msleep(WDT_FW_RESET_TIME);
 
 	return 0;
 }
@@ -403,6 +437,15 @@ static int wdt87xx_get_sysparam(struct i2c_client *client,
 	u8 buf[PKT_READ_SIZE];
 	int error;
 
+	error = wdt87xx_get_desc(client, WDT_GD_DEVICE, buf, 18);
+	if (error) {
+		dev_err(&client->dev, "failed to get device desc\n");
+		return error;
+	}
+
+	param->vendor_id = get_unaligned_le16(buf + DEV_DESC_OFFSET_VID);
+	param->product_id = get_unaligned_le16(buf + DEV_DESC_OFFSET_PID);
+
 	error = wdt87xx_get_string(client, STRIDX_PARAMETERS, buf, 34);
 	if (error) {
 		dev_err(&client->dev, "failed to get parameters\n");
@@ -994,6 +1037,8 @@ static int wdt87xx_ts_create_input_device(struct wdt87xx_data *wdt)
 
 	input->name = "WDT87xx Touchscreen";
 	input->id.bustype = BUS_I2C;
+	input->id.vendor = wdt->param.vendor_id;
+	input->id.product = wdt->param.product_id;
 	input->phys = wdt->phys;
 
 	input_set_abs_params(input, ABS_MT_POSITION_X, 0,
diff --git a/drivers/input/touchscreen/zforce_ts.c b/drivers/input/touchscreen/zforce_ts.c
index f58a196521a9..781d0f83050a 100644
--- a/drivers/input/touchscreen/zforce_ts.c
+++ b/drivers/input/touchscreen/zforce_ts.c
@@ -24,14 +24,13 @@
 #include <linux/interrupt.h>
 #include <linux/i2c.h>
 #include <linux/delay.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/device.h>
 #include <linux/sysfs.h>
 #include <linux/input/mt.h>
 #include <linux/platform_data/zforce_ts.h>
 #include <linux/regulator/consumer.h>
 #include <linux/of.h>
-#include <linux/of_gpio.h>
 
 #define WAIT_TIMEOUT		msecs_to_jiffies(1000)
 
@@ -120,6 +119,9 @@ struct zforce_ts {
 
 	struct regulator	*reg_vdd;
 
+	struct gpio_desc	*gpio_int;
+	struct gpio_desc	*gpio_rst;
+
 	bool			suspending;
 	bool			suspended;
 	bool			boot_complete;
@@ -161,6 +163,16 @@ static int zforce_command(struct zforce_ts *ts, u8 cmd)
 	return 0;
 }
 
+static void zforce_reset_assert(struct zforce_ts *ts)
+{
+	gpiod_set_value_cansleep(ts->gpio_rst, 1);
+}
+
+static void zforce_reset_deassert(struct zforce_ts *ts)
+{
+	gpiod_set_value_cansleep(ts->gpio_rst, 0);
+}
+
 static int zforce_send_wait(struct zforce_ts *ts, const char *buf, int len)
 {
 	struct i2c_client *client = ts->client;
@@ -479,7 +491,6 @@ static irqreturn_t zforce_irq_thread(int irq, void *dev_id)
 {
 	struct zforce_ts *ts = dev_id;
 	struct i2c_client *client = ts->client;
-	const struct zforce_ts_platdata *pdata = ts->pdata;
 	int ret;
 	u8 payload_buffer[FRAME_MAXSIZE];
 	u8 *payload;
@@ -499,7 +510,16 @@ static irqreturn_t zforce_irq_thread(int irq, void *dev_id)
 	if (!ts->suspending && device_may_wakeup(&client->dev))
 		pm_stay_awake(&client->dev);
 
-	while (!gpio_get_value(pdata->gpio_int)) {
+	/*
+	 * Run at least once and exit the loop if
+	 * - the optional interrupt GPIO isn't specified
+	 *   (there is only one packet read per ISR invocation, then)
+	 * or
+	 * - the GPIO isn't active any more
+	 *   (packet read until the level GPIO indicates that there is
+	 *    no IRQ any more)
+	 */
+	do {
 		ret = zforce_read_packet(ts, payload_buffer);
 		if (ret < 0) {
 			dev_err(&client->dev,
@@ -566,7 +586,7 @@ static irqreturn_t zforce_irq_thread(int irq, void *dev_id)
 				payload[RESPONSE_ID]);
 			break;
 		}
-	}
+	} while (gpiod_get_value_cansleep(ts->gpio_int));
 
 	if (!ts->suspending && device_may_wakeup(&client->dev))
 		pm_relax(&client->dev);
@@ -690,7 +710,7 @@ static void zforce_reset(void *data)
 {
 	struct zforce_ts *ts = data;
 
-	gpio_set_value(ts->pdata->gpio_rst, 0);
+	zforce_reset_assert(ts);
 
 	udelay(10);
 
@@ -712,18 +732,6 @@ static struct zforce_ts_platdata *zforce_parse_dt(struct device *dev)
 		return ERR_PTR(-ENOMEM);
 	}
 
-	pdata->gpio_int = of_get_gpio(np, 0);
-	if (!gpio_is_valid(pdata->gpio_int)) {
-		dev_err(dev, "failed to get interrupt gpio\n");
-		return ERR_PTR(-EINVAL);
-	}
-
-	pdata->gpio_rst = of_get_gpio(np, 1);
-	if (!gpio_is_valid(pdata->gpio_rst)) {
-		dev_err(dev, "failed to get reset gpio\n");
-		return ERR_PTR(-EINVAL);
-	}
-
 	if (of_property_read_u32(np, "x-size", &pdata->x_max)) {
 		dev_err(dev, "failed to get x-size property\n");
 		return ERR_PTR(-EINVAL);
@@ -755,20 +763,49 @@ static int zforce_probe(struct i2c_client *client,
 	if (!ts)
 		return -ENOMEM;
 
-	ret = devm_gpio_request_one(&client->dev, pdata->gpio_int, GPIOF_IN,
-				    "zforce_ts_int");
-	if (ret) {
-		dev_err(&client->dev, "request of gpio %d failed, %d\n",
-			pdata->gpio_int, ret);
+	ts->gpio_rst = devm_gpiod_get_optional(&client->dev, "reset",
+					       GPIOD_OUT_HIGH);
+	if (IS_ERR(ts->gpio_rst)) {
+		ret = PTR_ERR(ts->gpio_rst);
+		dev_err(&client->dev,
+			"failed to request reset GPIO: %d\n", ret);
 		return ret;
 	}
 
-	ret = devm_gpio_request_one(&client->dev, pdata->gpio_rst,
-				    GPIOF_OUT_INIT_LOW, "zforce_ts_rst");
-	if (ret) {
-		dev_err(&client->dev, "request of gpio %d failed, %d\n",
-			pdata->gpio_rst, ret);
-		return ret;
+	if (ts->gpio_rst) {
+		ts->gpio_int = devm_gpiod_get_optional(&client->dev, "irq",
+						       GPIOD_IN);
+		if (IS_ERR(ts->gpio_int)) {
+			ret = PTR_ERR(ts->gpio_int);
+			dev_err(&client->dev,
+				"failed to request interrupt GPIO: %d\n", ret);
+			return ret;
+		}
+	} else {
+		/*
+		 * Deprecated GPIO handling for compatibility
+		 * with legacy binding.
+		 */
+
+		/* INT GPIO */
+		ts->gpio_int = devm_gpiod_get_index(&client->dev, NULL, 0,
+						    GPIOD_IN);
+		if (IS_ERR(ts->gpio_int)) {
+			ret = PTR_ERR(ts->gpio_int);
+			dev_err(&client->dev,
+				"failed to request interrupt GPIO: %d\n", ret);
+			return ret;
+		}
+
+		/* RST GPIO */
+		ts->gpio_rst = devm_gpiod_get_index(&client->dev, NULL, 1,
+					    GPIOD_OUT_HIGH);
+		if (IS_ERR(ts->gpio_rst)) {
+			ret = PTR_ERR(ts->gpio_rst);
+			dev_err(&client->dev,
+				"failed to request reset GPIO: %d\n", ret);
+			return ret;
+		}
 	}
 
 	ts->reg_vdd = devm_regulator_get_optional(&client->dev, "vdd");
@@ -863,7 +900,7 @@ static int zforce_probe(struct i2c_client *client,
 	i2c_set_clientdata(client, ts);
 
 	/* let the controller boot */
-	gpio_set_value(pdata->gpio_rst, 1);
+	zforce_reset_deassert(ts);
 
 	ts->command_waiting = NOTIFICATION_BOOTCOMPLETE;
 	if (wait_for_completion_timeout(&ts->command_done, WAIT_TIMEOUT) == 0)
@@ -917,7 +954,6 @@ MODULE_DEVICE_TABLE(of, zforce_dt_idtable);
 
 static struct i2c_driver zforce_driver = {
 	.driver = {
-		.owner	= THIS_MODULE,
 		.name	= "zforce-ts",
 		.pm	= &zforce_pm_ops,
 		.of_match_table	= of_match_ptr(zforce_dt_idtable),