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-rw-r--r--drivers/input/touchscreen/Kconfig41
-rw-r--r--drivers/input/touchscreen/Makefile3
-rw-r--r--drivers/input/touchscreen/ar1021_i2c.c2
-rw-r--r--drivers/input/touchscreen/atmel_mxt_ts.c391
-rw-r--r--drivers/input/touchscreen/bcm_iproc_tsc.c522
-rw-r--r--drivers/input/touchscreen/chipone_icn8318.c316
-rw-r--r--drivers/input/touchscreen/edt-ft5x06.c6
-rw-r--r--drivers/input/touchscreen/elants_i2c.c14
-rw-r--r--drivers/input/touchscreen/goodix.c36
-rw-r--r--drivers/input/touchscreen/of_touchscreen.c62
-rw-r--r--drivers/input/touchscreen/sun4i-ts.c46
-rw-r--r--drivers/input/touchscreen/sx8654.c286
-rw-r--r--drivers/input/touchscreen/tsc2007.c11
-rw-r--r--drivers/input/touchscreen/usbtouchscreen.c11
14 files changed, 1658 insertions, 89 deletions
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 6261fd6d7c3c..547f67d65372 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -140,6 +140,19 @@ config TOUCHSCREEN_BU21013
 	  To compile this driver as a module, choose M here: the
 	  module will be called bu21013_ts.
 
+config TOUCHSCREEN_CHIPONE_ICN8318
+	tristate "chipone icn8318 touchscreen controller"
+	depends on GPIOLIB
+	depends on I2C
+	depends on OF
+	help
+	  Say Y here if you have a ChipOne icn8318 based I2C touchscreen.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called chipone_icn8318.
+
 config TOUCHSCREEN_CY8CTMG110
 	tristate "cy8ctmg110 touchscreen"
 	depends on I2C
@@ -297,11 +310,12 @@ config TOUCHSCREEN_FUJITSU
 
 config TOUCHSCREEN_GOODIX
 	tristate "Goodix I2C touchscreen"
-	depends on I2C && ACPI
+	depends on I2C
 	help
 	  Say Y here if you have the Goodix touchscreen (such as one
 	  installed in Onda v975w tablets) connected to your
-	  system.
+	  system. It also supports 5-finger chip models, which can be
+	  found on ARM tablets, like Wexler TAB7200 and MSI Primo73.
 
 	  If unsure, say N.
 
@@ -323,6 +337,18 @@ config TOUCHSCREEN_ILI210X
 	  To compile this driver as a module, choose M here: the
 	  module will be called ili210x.
 
+config TOUCHSCREEN_IPROC
+	tristate "IPROC touch panel driver support"
+	depends on ARCH_BCM_IPROC || COMPILE_TEST
+	help
+	  Say Y here if you want to add support for the IPROC touch
+	  controller to your system.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called bcm_iproc_tsc.
+
 config TOUCHSCREEN_S3C2410
 	tristate "Samsung S3C2410/generic touchscreen input driver"
 	depends on ARCH_S3C24XX || SAMSUNG_DEV_TS
@@ -962,6 +988,17 @@ config TOUCHSCREEN_SUR40
 	  To compile this driver as a module, choose M here: the
 	  module will be called sur40.
 
+config TOUCHSCREEN_SX8654
+	tristate "Semtech SX8654 touchscreen"
+	depends on I2C
+	help
+	  Say Y here if you have a Semtech SX8654 touchscreen controller.
+
+	  If unsure, say N
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called sx8654.
+
 config TOUCHSCREEN_TPS6507X
 	tristate "TPS6507x based touchscreens"
 	depends on I2C
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index 0242fea2102a..44deea743d02 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -17,6 +17,7 @@ obj-$(CONFIG_TOUCHSCREEN_AR1021_I2C)	+= ar1021_i2c.o
 obj-$(CONFIG_TOUCHSCREEN_ATMEL_MXT)	+= atmel_mxt_ts.o
 obj-$(CONFIG_TOUCHSCREEN_AUO_PIXCIR)	+= auo-pixcir-ts.o
 obj-$(CONFIG_TOUCHSCREEN_BU21013)	+= bu21013_ts.o
+obj-$(CONFIG_TOUCHSCREEN_CHIPONE_ICN8318)	+= chipone_icn8318.o
 obj-$(CONFIG_TOUCHSCREEN_CY8CTMG110)	+= cy8ctmg110_ts.o
 obj-$(CONFIG_TOUCHSCREEN_CYTTSP_CORE)	+= cyttsp_core.o
 obj-$(CONFIG_TOUCHSCREEN_CYTTSP_I2C)	+= cyttsp_i2c.o cyttsp_i2c_common.o
@@ -39,6 +40,7 @@ obj-$(CONFIG_TOUCHSCREEN_GOODIX)	+= goodix.o
 obj-$(CONFIG_TOUCHSCREEN_ILI210X)	+= ili210x.o
 obj-$(CONFIG_TOUCHSCREEN_INEXIO)	+= inexio.o
 obj-$(CONFIG_TOUCHSCREEN_INTEL_MID)	+= intel-mid-touch.o
+obj-$(CONFIG_TOUCHSCREEN_IPROC)		+= bcm_iproc_tsc.o
 obj-$(CONFIG_TOUCHSCREEN_LPC32XX)	+= lpc32xx_ts.o
 obj-$(CONFIG_TOUCHSCREEN_MAX11801)	+= max11801_ts.o
 obj-$(CONFIG_TOUCHSCREEN_MC13783)	+= mc13783_ts.o
@@ -79,5 +81,6 @@ obj-$(CONFIG_TOUCHSCREEN_WM97XX_ATMEL)	+= atmel-wm97xx.o
 obj-$(CONFIG_TOUCHSCREEN_WM97XX_MAINSTONE)	+= mainstone-wm97xx.o
 obj-$(CONFIG_TOUCHSCREEN_WM97XX_ZYLONITE)	+= zylonite-wm97xx.o
 obj-$(CONFIG_TOUCHSCREEN_W90X900)	+= w90p910_ts.o
+obj-$(CONFIG_TOUCHSCREEN_SX8654)	+= sx8654.o
 obj-$(CONFIG_TOUCHSCREEN_TPS6507X)	+= tps6507x-ts.o
 obj-$(CONFIG_TOUCHSCREEN_ZFORCE)	+= zforce_ts.o
diff --git a/drivers/input/touchscreen/ar1021_i2c.c b/drivers/input/touchscreen/ar1021_i2c.c
index ba30578e296e..f0b954d46a25 100644
--- a/drivers/input/touchscreen/ar1021_i2c.c
+++ b/drivers/input/touchscreen/ar1021_i2c.c
@@ -157,7 +157,7 @@ static const struct i2c_device_id ar1021_i2c_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, ar1021_i2c_id);
 
-static struct of_device_id ar1021_i2c_of_match[] = {
+static const struct of_device_id ar1021_i2c_of_match[] = {
 	{ .compatible = "microchip,ar1021-i2c", },
 	{ }
 };
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index 95ee92a91bd2..2875ddf37289 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -25,6 +25,7 @@
 #include <linux/interrupt.h>
 #include <linux/of.h>
 #include <linux/slab.h>
+#include <asm/unaligned.h>
 
 /* Version */
 #define MXT_VER_20		20
@@ -79,6 +80,7 @@
 #define MXT_SPT_DIGITIZER_T43		43
 #define MXT_SPT_MESSAGECOUNT_T44	44
 #define MXT_SPT_CTECONFIG_T46		46
+#define MXT_TOUCH_MULTITOUCHSCREEN_T100 100
 
 /* MXT_GEN_MESSAGE_T5 object */
 #define MXT_RPTID_NOMSG		0xff
@@ -185,6 +187,36 @@ struct t9_range {
 #define MXT_RESET_VALUE		0x01
 #define MXT_BACKUP_VALUE	0x55
 
+/* T100 Multiple Touch Touchscreen */
+#define MXT_T100_CTRL		0
+#define MXT_T100_CFG1		1
+#define MXT_T100_TCHAUX		3
+#define MXT_T100_XRANGE		13
+#define MXT_T100_YRANGE		24
+
+#define MXT_T100_CFG_SWITCHXY	BIT(5)
+
+#define MXT_T100_TCHAUX_VECT	BIT(0)
+#define MXT_T100_TCHAUX_AMPL	BIT(1)
+#define MXT_T100_TCHAUX_AREA	BIT(2)
+
+#define MXT_T100_DETECT		BIT(7)
+#define MXT_T100_TYPE_MASK	0x70
+
+enum t100_type {
+	MXT_T100_TYPE_FINGER		= 1,
+	MXT_T100_TYPE_PASSIVE_STYLUS	= 2,
+	MXT_T100_TYPE_HOVERING_FINGER	= 4,
+	MXT_T100_TYPE_GLOVE		= 5,
+	MXT_T100_TYPE_LARGE_TOUCH	= 6,
+};
+
+#define MXT_DISTANCE_ACTIVE_TOUCH	0
+#define MXT_DISTANCE_HOVERING		1
+
+#define MXT_TOUCH_MAJOR_DEFAULT		1
+#define MXT_PRESSURE_DEFAULT		1
+
 /* Delay times */
 #define MXT_BACKUP_TIME		50	/* msec */
 #define MXT_RESET_TIME		200	/* msec */
@@ -244,6 +276,9 @@ struct mxt_data {
 	unsigned int max_y;
 	bool in_bootloader;
 	u16 mem_size;
+	u8 t100_aux_ampl;
+	u8 t100_aux_area;
+	u8 t100_aux_vect;
 	u8 max_reportid;
 	u32 config_crc;
 	u32 info_crc;
@@ -253,6 +288,7 @@ struct mxt_data {
 	bool update_input;
 	u8 last_message_count;
 	u8 num_touchids;
+	u8 multitouch;
 
 	/* Cached parameters from object table */
 	u16 T5_address;
@@ -264,6 +300,8 @@ struct mxt_data {
 	u8 T9_reportid_max;
 	u8 T19_reportid;
 	u16 T44_address;
+	u8 T100_reportid_min;
+	u8 T100_reportid_max;
 
 	/* for fw update in bootloader */
 	struct completion bl_completion;
@@ -771,6 +809,114 @@ static void mxt_proc_t9_message(struct mxt_data *data, u8 *message)
 	data->update_input = true;
 }
 
+static void mxt_proc_t100_message(struct mxt_data *data, u8 *message)
+{
+	struct device *dev = &data->client->dev;
+	struct input_dev *input_dev = data->input_dev;
+	int id;
+	u8 status;
+	u8 type = 0;
+	u16 x;
+	u16 y;
+	int distance = 0;
+	int tool = 0;
+	u8 major = 0;
+	u8 pressure = 0;
+	u8 orientation = 0;
+
+	id = message[0] - data->T100_reportid_min - 2;
+
+	/* ignore SCRSTATUS events */
+	if (id < 0)
+		return;
+
+	status = message[1];
+	x = get_unaligned_le16(&message[2]);
+	y = get_unaligned_le16(&message[4]);
+
+	if (status & MXT_T100_DETECT) {
+		type = (status & MXT_T100_TYPE_MASK) >> 4;
+
+		switch (type) {
+		case MXT_T100_TYPE_HOVERING_FINGER:
+			tool = MT_TOOL_FINGER;
+			distance = MXT_DISTANCE_HOVERING;
+
+			if (data->t100_aux_vect)
+				orientation = message[data->t100_aux_vect];
+
+			break;
+
+		case MXT_T100_TYPE_FINGER:
+		case MXT_T100_TYPE_GLOVE:
+			tool = MT_TOOL_FINGER;
+			distance = MXT_DISTANCE_ACTIVE_TOUCH;
+
+			if (data->t100_aux_area)
+				major = message[data->t100_aux_area];
+
+			if (data->t100_aux_ampl)
+				pressure = message[data->t100_aux_ampl];
+
+			if (data->t100_aux_vect)
+				orientation = message[data->t100_aux_vect];
+
+			break;
+
+		case MXT_T100_TYPE_PASSIVE_STYLUS:
+			tool = MT_TOOL_PEN;
+
+			/*
+			 * Passive stylus is reported with size zero so
+			 * hardcode.
+			 */
+			major = MXT_TOUCH_MAJOR_DEFAULT;
+
+			if (data->t100_aux_ampl)
+				pressure = message[data->t100_aux_ampl];
+
+			break;
+
+		case MXT_T100_TYPE_LARGE_TOUCH:
+			/* Ignore suppressed touch */
+			break;
+
+		default:
+			dev_dbg(dev, "Unexpected T100 type\n");
+			return;
+		}
+	}
+
+	/*
+	 * Values reported should be non-zero if tool is touching the
+	 * device
+	 */
+	if (!pressure && type != MXT_T100_TYPE_HOVERING_FINGER)
+		pressure = MXT_PRESSURE_DEFAULT;
+
+	input_mt_slot(input_dev, id);
+
+	if (status & MXT_T100_DETECT) {
+		dev_dbg(dev, "[%u] type:%u x:%u y:%u a:%02X p:%02X v:%02X\n",
+			id, type, x, y, major, pressure, orientation);
+
+		input_mt_report_slot_state(input_dev, tool, 1);
+		input_report_abs(input_dev, ABS_MT_POSITION_X, x);
+		input_report_abs(input_dev, ABS_MT_POSITION_Y, y);
+		input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, major);
+		input_report_abs(input_dev, ABS_MT_PRESSURE, pressure);
+		input_report_abs(input_dev, ABS_MT_DISTANCE, distance);
+		input_report_abs(input_dev, ABS_MT_ORIENTATION, orientation);
+	} else {
+		dev_dbg(dev, "[%u] release\n", id);
+
+		/* close out slot */
+		input_mt_report_slot_state(input_dev, 0, 0);
+	}
+
+	data->update_input = true;
+}
+
 static int mxt_proc_message(struct mxt_data *data, u8 *message)
 {
 	u8 report_id = message[0];
@@ -786,9 +932,12 @@ static int mxt_proc_message(struct mxt_data *data, u8 *message)
 		 * is not yet registered.
 		 */
 		mxt_dump_message(data, message);
-	} else if (report_id >= data->T9_reportid_min
-	    && report_id <= data->T9_reportid_max) {
+	} else if (report_id >= data->T9_reportid_min &&
+		   report_id <= data->T9_reportid_max) {
 		mxt_proc_t9_message(data, message);
+	} else if (report_id >= data->T100_reportid_min &&
+		   report_id <= data->T100_reportid_max) {
+		mxt_proc_t100_message(data, message);
 	} else if (report_id == data->T19_reportid) {
 		mxt_input_button(data, message);
 		data->update_input = true;
@@ -1411,6 +1560,8 @@ static void mxt_free_object_table(struct mxt_data *data)
 	data->T9_reportid_max = 0;
 	data->T19_reportid = 0;
 	data->T44_address = 0;
+	data->T100_reportid_min = 0;
+	data->T100_reportid_max = 0;
 	data->max_reportid = 0;
 }
 
@@ -1487,6 +1638,7 @@ static int mxt_get_object_table(struct mxt_data *data)
 			data->T7_address = object->start_address;
 			break;
 		case MXT_TOUCH_MULTI_T9:
+			data->multitouch = MXT_TOUCH_MULTI_T9;
 			data->T9_reportid_min = min_id;
 			data->T9_reportid_max = max_id;
 			data->num_touchids = object->num_report_ids
@@ -1498,6 +1650,13 @@ static int mxt_get_object_table(struct mxt_data *data)
 		case MXT_SPT_GPIOPWM_T19:
 			data->T19_reportid = min_id;
 			break;
+		case MXT_TOUCH_MULTITOUCHSCREEN_T100:
+			data->multitouch = MXT_TOUCH_MULTITOUCHSCREEN_T100;
+			data->T100_reportid_min = min_id;
+			data->T100_reportid_max = max_id;
+			/* first two report IDs reserved */
+			data->num_touchids = object->num_report_ids - 2;
+			break;
 		}
 
 		end_address = object->start_address
@@ -1582,22 +1741,138 @@ static int mxt_read_t9_resolution(struct mxt_data *data)
 	return 0;
 }
 
+static int mxt_read_t100_config(struct mxt_data *data)
+{
+	struct i2c_client *client = data->client;
+	int error;
+	struct mxt_object *object;
+	u16 range_x, range_y;
+	u8 cfg, tchaux;
+	u8 aux;
+
+	object = mxt_get_object(data, MXT_TOUCH_MULTITOUCHSCREEN_T100);
+	if (!object)
+		return -EINVAL;
+
+	error = __mxt_read_reg(client,
+			       object->start_address + MXT_T100_XRANGE,
+			       sizeof(range_x), &range_x);
+	if (error)
+		return error;
+
+	le16_to_cpus(&range_x);
+
+	error = __mxt_read_reg(client,
+			       object->start_address + MXT_T100_YRANGE,
+			       sizeof(range_y), &range_y);
+	if (error)
+		return error;
+
+	le16_to_cpus(&range_y);
+
+	error =  __mxt_read_reg(client,
+				object->start_address + MXT_T100_CFG1,
+				1, &cfg);
+	if (error)
+		return error;
+
+	error =  __mxt_read_reg(client,
+				object->start_address + MXT_T100_TCHAUX,
+				1, &tchaux);
+	if (error)
+		return error;
+
+	/* Handle default values */
+	if (range_x == 0)
+		range_x = 1023;
+
+	if (range_y == 0)
+		range_y = 1023;
+
+	if (cfg & MXT_T100_CFG_SWITCHXY) {
+		data->max_x = range_y;
+		data->max_y = range_x;
+	} else {
+		data->max_x = range_x;
+		data->max_y = range_y;
+	}
+
+	/* allocate aux bytes */
+	aux = 6;
+
+	if (tchaux & MXT_T100_TCHAUX_VECT)
+		data->t100_aux_vect = aux++;
+
+	if (tchaux & MXT_T100_TCHAUX_AMPL)
+		data->t100_aux_ampl = aux++;
+
+	if (tchaux & MXT_T100_TCHAUX_AREA)
+		data->t100_aux_area = aux++;
+
+	dev_dbg(&client->dev,
+		"T100 aux mappings vect:%u ampl:%u area:%u\n",
+		data->t100_aux_vect, data->t100_aux_ampl, data->t100_aux_area);
+
+	dev_info(&client->dev,
+		 "T100 Touchscreen size X%uY%u\n", data->max_x, data->max_y);
+
+	return 0;
+}
+
 static int mxt_input_open(struct input_dev *dev);
 static void mxt_input_close(struct input_dev *dev);
 
-static int mxt_initialize_t9_input_device(struct mxt_data *data)
+static void mxt_set_up_as_touchpad(struct input_dev *input_dev,
+				   struct mxt_data *data)
 {
-	struct device *dev = &data->client->dev;
 	const struct mxt_platform_data *pdata = data->pdata;
+	int i;
+
+	input_dev->name = "Atmel maXTouch Touchpad";
+
+	__set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit);
+
+	input_abs_set_res(input_dev, ABS_X, MXT_PIXELS_PER_MM);
+	input_abs_set_res(input_dev, ABS_Y, MXT_PIXELS_PER_MM);
+	input_abs_set_res(input_dev, ABS_MT_POSITION_X,
+			  MXT_PIXELS_PER_MM);
+	input_abs_set_res(input_dev, ABS_MT_POSITION_Y,
+			  MXT_PIXELS_PER_MM);
+
+	for (i = 0; i < pdata->t19_num_keys; i++)
+		if (pdata->t19_keymap[i] != KEY_RESERVED)
+			input_set_capability(input_dev, EV_KEY,
+					     pdata->t19_keymap[i]);
+}
+
+static int mxt_initialize_input_device(struct mxt_data *data)
+{
+	const struct mxt_platform_data *pdata = data->pdata;
+	struct device *dev = &data->client->dev;
 	struct input_dev *input_dev;
 	int error;
 	unsigned int num_mt_slots;
 	unsigned int mt_flags = 0;
-	int i;
 
-	error = mxt_read_t9_resolution(data);
-	if (error)
-		dev_warn(dev, "Failed to initialize T9 resolution\n");
+	switch (data->multitouch) {
+	case MXT_TOUCH_MULTI_T9:
+		num_mt_slots = data->T9_reportid_max - data->T9_reportid_min + 1;
+		error = mxt_read_t9_resolution(data);
+		if (error)
+			dev_warn(dev, "Failed to initialize T9 resolution\n");
+		break;
+
+	case MXT_TOUCH_MULTITOUCHSCREEN_T100:
+		num_mt_slots = data->num_touchids;
+		error = mxt_read_t100_config(data);
+		if (error)
+			dev_warn(dev, "Failed to read T100 config\n");
+		break;
+
+	default:
+		dev_err(dev, "Invalid multitouch object\n");
+		return -EINVAL;
+	}
 
 	input_dev = input_allocate_device();
 	if (!input_dev) {
@@ -1612,54 +1887,76 @@ static int mxt_initialize_t9_input_device(struct mxt_data *data)
 	input_dev->open = mxt_input_open;
 	input_dev->close = mxt_input_close;
 
-	__set_bit(EV_ABS, input_dev->evbit);
-	__set_bit(EV_KEY, input_dev->evbit);
-	__set_bit(BTN_TOUCH, input_dev->keybit);
+	input_set_capability(input_dev, EV_KEY, BTN_TOUCH);
 
-	if (pdata->t19_num_keys) {
-		__set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit);
+	/* For single touch */
+	input_set_abs_params(input_dev, ABS_X, 0, data->max_x, 0, 0);
+	input_set_abs_params(input_dev, ABS_Y, 0, data->max_y, 0, 0);
 
-		for (i = 0; i < pdata->t19_num_keys; i++)
-			if (pdata->t19_keymap[i] != KEY_RESERVED)
-				input_set_capability(input_dev, EV_KEY,
-						     pdata->t19_keymap[i]);
+	if (data->multitouch == MXT_TOUCH_MULTI_T9 ||
+	    (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 &&
+	     data->t100_aux_ampl)) {
+		input_set_abs_params(input_dev, ABS_PRESSURE, 0, 255, 0, 0);
+	}
 
+	/* If device has buttons we assume it is a touchpad */
+	if (pdata->t19_num_keys) {
+		mxt_set_up_as_touchpad(input_dev, data);
 		mt_flags |= INPUT_MT_POINTER;
-
-		input_abs_set_res(input_dev, ABS_X, MXT_PIXELS_PER_MM);
-		input_abs_set_res(input_dev, ABS_Y, MXT_PIXELS_PER_MM);
-		input_abs_set_res(input_dev, ABS_MT_POSITION_X,
-				  MXT_PIXELS_PER_MM);
-		input_abs_set_res(input_dev, ABS_MT_POSITION_Y,
-				  MXT_PIXELS_PER_MM);
-
-		input_dev->name = "Atmel maXTouch Touchpad";
 	}
 
-	/* For single touch */
-	input_set_abs_params(input_dev, ABS_X,
-			     0, data->max_x, 0, 0);
-	input_set_abs_params(input_dev, ABS_Y,
-			     0, data->max_y, 0, 0);
-	input_set_abs_params(input_dev, ABS_PRESSURE,
-			     0, 255, 0, 0);
-
 	/* For multi touch */
-	num_mt_slots = data->T9_reportid_max - data->T9_reportid_min + 1;
 	error = input_mt_init_slots(input_dev, num_mt_slots, mt_flags);
 	if (error) {
 		dev_err(dev, "Error %d initialising slots\n", error);
 		goto err_free_mem;
 	}
 
-	input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR,
-			     0, MXT_MAX_AREA, 0, 0);
+	if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100) {
+		input_set_abs_params(input_dev, ABS_MT_TOOL_TYPE,
+				     0, MT_TOOL_MAX, 0, 0);
+		input_set_abs_params(input_dev, ABS_MT_DISTANCE,
+				     MXT_DISTANCE_ACTIVE_TOUCH,
+				     MXT_DISTANCE_HOVERING,
+				     0, 0);
+	}
+
 	input_set_abs_params(input_dev, ABS_MT_POSITION_X,
 			     0, data->max_x, 0, 0);
 	input_set_abs_params(input_dev, ABS_MT_POSITION_Y,
 			     0, data->max_y, 0, 0);
-	input_set_abs_params(input_dev, ABS_MT_PRESSURE,
-			     0, 255, 0, 0);
+
+	if (data->multitouch == MXT_TOUCH_MULTI_T9 ||
+	    (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 &&
+	     data->t100_aux_area)) {
+		input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR,
+				     0, MXT_MAX_AREA, 0, 0);
+	}
+
+	if (data->multitouch == MXT_TOUCH_MULTI_T9 ||
+	    (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 &&
+	     data->t100_aux_ampl)) {
+		input_set_abs_params(input_dev, ABS_MT_PRESSURE,
+				     0, 255, 0, 0);
+	}
+
+	if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 &&
+	    data->t100_aux_vect) {
+		input_set_abs_params(input_dev, ABS_MT_ORIENTATION,
+				     0, 255, 0, 0);
+	}
+
+	if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 &&
+	    data->t100_aux_ampl) {
+		input_set_abs_params(input_dev, ABS_MT_PRESSURE,
+				     0, 255, 0, 0);
+	}
+
+	if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 &&
+	    data->t100_aux_vect) {
+		input_set_abs_params(input_dev, ABS_MT_ORIENTATION,
+				     0, 255, 0, 0);
+	}
 
 	input_set_drvdata(input_dev, data);
 
@@ -1765,9 +2062,13 @@ static int mxt_configure_objects(struct mxt_data *data,
 			dev_warn(dev, "Error %d updating config\n", error);
 	}
 
-	error = mxt_initialize_t9_input_device(data);
-	if (error)
-		return error;
+	if (data->multitouch) {
+		error = mxt_initialize_input_device(data);
+		if (error)
+			return error;
+	} else {
+		dev_warn(dev, "No touch object detected\n");
+	}
 
 	dev_info(dev,
 		 "Family: %u Variant: %u Firmware V%u.%u.%02X Objects: %u\n",
@@ -2044,15 +2345,13 @@ static const struct attribute_group mxt_attr_group = {
 static void mxt_start(struct mxt_data *data)
 {
 	/* Touch enable */
-	mxt_write_object(data,
-			MXT_TOUCH_MULTI_T9, MXT_TOUCH_CTRL, 0x83);
+	mxt_write_object(data, data->multitouch, MXT_TOUCH_CTRL, 0x83);
 }
 
 static void mxt_stop(struct mxt_data *data)
 {
 	/* Touch disable */
-	mxt_write_object(data,
-			MXT_TOUCH_MULTI_T9, MXT_TOUCH_CTRL, 0);
+	mxt_write_object(data, data->multitouch, MXT_TOUCH_CTRL, 0);
 }
 
 static int mxt_input_open(struct input_dev *dev)
diff --git a/drivers/input/touchscreen/bcm_iproc_tsc.c b/drivers/input/touchscreen/bcm_iproc_tsc.c
new file mode 100644
index 000000000000..ae460a5c93d5
--- /dev/null
+++ b/drivers/input/touchscreen/bcm_iproc_tsc.c
@@ -0,0 +1,522 @@
+/*
+* Copyright (C) 2015 Broadcom Corporation
+*
+* 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 version 2.
+*
+* This program is distributed "as is" WITHOUT ANY WARRANTY of any
+* kind, whether express or implied; without even the implied warranty
+* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU General Public License for more details.
+*/
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/keyboard.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <asm/irq.h>
+#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/serio.h>
+
+#define IPROC_TS_NAME "iproc-ts"
+
+#define PEN_DOWN_STATUS     1
+#define PEN_UP_STATUS       0
+
+#define X_MIN               0
+#define Y_MIN               0
+#define X_MAX               0xFFF
+#define Y_MAX               0xFFF
+
+/* Value given by controller for invalid coordinate. */
+#define INVALID_COORD       0xFFFFFFFF
+
+/* Register offsets */
+#define REGCTL1             0x00
+#define REGCTL2             0x04
+#define INTERRUPT_THRES     0x08
+#define INTERRUPT_MASK      0x0c
+
+#define INTERRUPT_STATUS    0x10
+#define CONTROLLER_STATUS   0x14
+#define FIFO_DATA           0x18
+#define FIFO_DATA_X_Y_MASK  0xFFFF
+#define ANALOG_CONTROL      0x1c
+
+#define AUX_DATA            0x20
+#define DEBOUNCE_CNTR_STAT  0x24
+#define SCAN_CNTR_STAT      0x28
+#define REM_CNTR_STAT       0x2c
+
+#define SETTLING_TIMER_STAT 0x30
+#define SPARE_REG           0x34
+#define SOFT_BYPASS_CONTROL 0x38
+#define SOFT_BYPASS_DATA    0x3c
+
+
+/* Bit values for INTERRUPT_MASK and INTERRUPT_STATUS regs */
+#define TS_PEN_INTR_MASK        BIT(0)
+#define TS_FIFO_INTR_MASK       BIT(2)
+
+/* Bit values for CONTROLLER_STATUS reg1 */
+#define TS_PEN_DOWN             BIT(0)
+
+/* Shift values for control reg1 */
+#define SCANNING_PERIOD_SHIFT   24
+#define DEBOUNCE_TIMEOUT_SHIFT  16
+#define SETTLING_TIMEOUT_SHIFT  8
+#define TOUCH_TIMEOUT_SHIFT     0
+
+/* Shift values for coordinates from fifo */
+#define X_COORD_SHIFT  0
+#define Y_COORD_SHIFT  16
+
+/* Bit values for REGCTL2 */
+#define TS_CONTROLLER_EN_BIT    BIT(16)
+#define TS_CONTROLLER_AVGDATA_SHIFT 8
+#define TS_CONTROLLER_AVGDATA_MASK (0x7 << TS_CONTROLLER_AVGDATA_SHIFT)
+#define TS_CONTROLLER_PWR_LDO   BIT(5)
+#define TS_CONTROLLER_PWR_ADC   BIT(4)
+#define TS_CONTROLLER_PWR_BGP   BIT(3)
+#define TS_CONTROLLER_PWR_TS    BIT(2)
+#define TS_WIRE_MODE_BIT        BIT(1)
+
+#define dbg_reg(dev, priv, reg) \
+	dev_dbg(dev, "%20s= 0x%08x\n", #reg, readl((priv)->regs + reg))
+
+struct tsc_param {
+	/* Each step is 1024 us.  Valid 1-256 */
+	u32 scanning_period;
+
+	/*  Each step is 512 us.  Valid 0-255 */
+	u32 debounce_timeout;
+
+	/*
+	 * The settling duration (in ms) is the amount of time the tsc
+	 * waits to allow the voltage to settle after turning on the
+	 * drivers in detection mode. Valid values: 0-11
+	 *   0 =  0.008 ms
+	 *   1 =  0.01 ms
+	 *   2 =  0.02 ms
+	 *   3 =  0.04 ms
+	 *   4 =  0.08 ms
+	 *   5 =  0.16 ms
+	 *   6 =  0.32 ms
+	 *   7 =  0.64 ms
+	 *   8 =  1.28 ms
+	 *   9 =  2.56 ms
+	 *   10 = 5.12 ms
+	 *   11 = 10.24 ms
+	 */
+	u32 settling_timeout;
+
+	/* touch timeout in sample counts */
+	u32 touch_timeout;
+
+	/*
+	 * Number of data samples which are averaged before a final data point
+	 * is placed into the FIFO
+	 */
+	u32 average_data;
+
+	/* FIFO threshold */
+	u32 fifo_threshold;
+
+	/* Optional standard touchscreen properties. */
+	u32 max_x;
+	u32 max_y;
+	u32 fuzz_x;
+	u32 fuzz_y;
+	bool invert_x;
+	bool invert_y;
+};
+
+struct iproc_ts_priv {
+	struct platform_device *pdev;
+	struct input_dev *idev;
+
+	void __iomem *regs;
+	struct clk *tsc_clk;
+
+	int  pen_status;
+	struct tsc_param cfg_params;
+};
+
+/*
+ * Set default values the same as hardware reset values
+ * except for fifo_threshold with is set to 1.
+ */
+static const struct tsc_param iproc_default_config = {
+	.scanning_period  = 0x5,  /* 1 to 256 */
+	.debounce_timeout = 0x28, /* 0 to 255 */
+	.settling_timeout = 0x7,  /* 0 to 11 */
+	.touch_timeout    = 0xa,  /* 0 to 255 */
+	.average_data     = 5,    /* entry 5 = 32 pts */
+	.fifo_threshold   = 1,    /* 0 to 31 */
+	.max_x            = X_MAX,
+	.max_y            = Y_MAX,
+};
+
+static void ts_reg_dump(struct iproc_ts_priv *priv)
+{
+	struct device *dev = &priv->pdev->dev;
+
+	dbg_reg(dev, priv, REGCTL1);
+	dbg_reg(dev, priv, REGCTL2);
+	dbg_reg(dev, priv, INTERRUPT_THRES);
+	dbg_reg(dev, priv, INTERRUPT_MASK);
+	dbg_reg(dev, priv, INTERRUPT_STATUS);
+	dbg_reg(dev, priv, CONTROLLER_STATUS);
+	dbg_reg(dev, priv, FIFO_DATA);
+	dbg_reg(dev, priv, ANALOG_CONTROL);
+	dbg_reg(dev, priv, AUX_DATA);
+	dbg_reg(dev, priv, DEBOUNCE_CNTR_STAT);
+	dbg_reg(dev, priv, SCAN_CNTR_STAT);
+	dbg_reg(dev, priv, REM_CNTR_STAT);
+	dbg_reg(dev, priv, SETTLING_TIMER_STAT);
+	dbg_reg(dev, priv, SPARE_REG);
+	dbg_reg(dev, priv, SOFT_BYPASS_CONTROL);
+	dbg_reg(dev, priv, SOFT_BYPASS_DATA);
+}
+
+static irqreturn_t iproc_touchscreen_interrupt(int irq, void *data)
+{
+	struct platform_device *pdev = data;
+	struct iproc_ts_priv *priv = platform_get_drvdata(pdev);
+	u32 intr_status;
+	u32 raw_coordinate;
+	u16 x;
+	u16 y;
+	int i;
+	bool needs_sync = false;
+
+	intr_status = readl(priv->regs + INTERRUPT_STATUS);
+	intr_status &= TS_PEN_INTR_MASK | TS_FIFO_INTR_MASK;
+	if (intr_status == 0)
+		return IRQ_NONE;
+
+	/* Clear all interrupt status bits, write-1-clear */
+	writel(intr_status, priv->regs + INTERRUPT_STATUS);
+
+	/* Pen up/down */
+	if (intr_status & TS_PEN_INTR_MASK) {
+		if (readl(priv->regs + CONTROLLER_STATUS) & TS_PEN_DOWN)
+			priv->pen_status = PEN_DOWN_STATUS;
+		else
+			priv->pen_status = PEN_UP_STATUS;
+
+		input_report_key(priv->idev, BTN_TOUCH, priv->pen_status);
+		needs_sync = true;
+
+		dev_dbg(&priv->pdev->dev,
+			"pen up-down (%d)\n", priv->pen_status);
+	}
+
+	/* coordinates in FIFO exceed the theshold */
+	if (intr_status & TS_FIFO_INTR_MASK) {
+		for (i = 0; i < priv->cfg_params.fifo_threshold; i++) {
+			raw_coordinate = readl(priv->regs + FIFO_DATA);
+			if (raw_coordinate == INVALID_COORD)
+				continue;
+
+			/*
+			 * The x and y coordinate are 16 bits each
+			 * with the x in the lower 16 bits and y in the
+			 * upper 16 bits.
+			 */
+			x = (raw_coordinate >> X_COORD_SHIFT) &
+				FIFO_DATA_X_Y_MASK;
+			y = (raw_coordinate >> Y_COORD_SHIFT) &
+				FIFO_DATA_X_Y_MASK;
+
+			/* We only want to retain the 12 msb of the 16 */
+			x = (x >> 4) & 0x0FFF;
+			y = (y >> 4) & 0x0FFF;
+
+			/* adjust x y according to lcd tsc mount angle */
+			if (priv->cfg_params.invert_x)
+				x = priv->cfg_params.max_x - x;
+
+			if (priv->cfg_params.invert_y)
+				y = priv->cfg_params.max_y - y;
+
+			input_report_abs(priv->idev, ABS_X, x);
+			input_report_abs(priv->idev, ABS_Y, y);
+			needs_sync = true;
+
+			dev_dbg(&priv->pdev->dev, "xy (0x%x 0x%x)\n", x, y);
+		}
+	}
+
+	if (needs_sync)
+		input_sync(priv->idev);
+
+	return IRQ_HANDLED;
+}
+
+static int iproc_ts_start(struct input_dev *idev)
+{
+	struct iproc_ts_priv *priv = input_get_drvdata(idev);
+	u32 val;
+	int error;
+
+	/* Enable clock */
+	error = clk_prepare_enable(priv->tsc_clk);
+	if (error) {
+		dev_err(&priv->pdev->dev, "%s clk_prepare_enable failed %d\n",
+			__func__, error);
+		return error;
+	}
+
+	/*
+	 * Interrupt is generated when:
+	 *  FIFO reaches the int_th value, and pen event(up/down)
+	 */
+	val = TS_PEN_INTR_MASK | TS_FIFO_INTR_MASK;
+	writel(val, priv->regs + INTERRUPT_MASK);
+
+	writel(priv->cfg_params.fifo_threshold, priv->regs + INTERRUPT_THRES);
+
+	/* Initialize control reg1 */
+	val = 0;
+	val |= priv->cfg_params.scanning_period << SCANNING_PERIOD_SHIFT;
+	val |= priv->cfg_params.debounce_timeout << DEBOUNCE_TIMEOUT_SHIFT;
+	val |= priv->cfg_params.settling_timeout << SETTLING_TIMEOUT_SHIFT;
+	val |= priv->cfg_params.touch_timeout << TOUCH_TIMEOUT_SHIFT;
+	writel(val, priv->regs + REGCTL1);
+
+	/* Try to clear all interrupt status */
+	val = readl(priv->regs + INTERRUPT_STATUS);
+	val |= TS_FIFO_INTR_MASK | TS_PEN_INTR_MASK;
+	writel(val, priv->regs + INTERRUPT_STATUS);
+
+	/* Initialize control reg2 */
+	val = readl(priv->regs + REGCTL2);
+	val |= TS_CONTROLLER_EN_BIT | TS_WIRE_MODE_BIT;
+
+	val &= ~TS_CONTROLLER_AVGDATA_MASK;
+	val |= priv->cfg_params.average_data << TS_CONTROLLER_AVGDATA_SHIFT;
+
+	val &= ~(TS_CONTROLLER_PWR_LDO |	/* PWR up LDO */
+		   TS_CONTROLLER_PWR_ADC |	/* PWR up ADC */
+		   TS_CONTROLLER_PWR_BGP |	/* PWR up BGP */
+		   TS_CONTROLLER_PWR_TS);	/* PWR up TS */
+
+	writel(val, priv->regs + REGCTL2);
+
+	ts_reg_dump(priv);
+
+	return 0;
+}
+
+static void iproc_ts_stop(struct input_dev *dev)
+{
+	u32 val;
+	struct iproc_ts_priv *priv = input_get_drvdata(dev);
+
+	writel(0, priv->regs + INTERRUPT_MASK); /* Disable all interrupts */
+
+	/* Only power down touch screen controller */
+	val = readl(priv->regs + REGCTL2);
+	val |= TS_CONTROLLER_PWR_TS;
+	writel(val, priv->regs + REGCTL2);
+
+	clk_disable(priv->tsc_clk);
+}
+
+static int iproc_get_tsc_config(struct device *dev, struct iproc_ts_priv *priv)
+{
+	struct device_node *np = dev->of_node;
+	u32 val;
+
+	priv->cfg_params = iproc_default_config;
+
+	if (!np)
+		return 0;
+
+	if (of_property_read_u32(np, "scanning_period", &val) >= 0) {
+		if (val < 1 || val > 256) {
+			dev_err(dev, "scanning_period (%u) must be [1-256]\n",
+				val);
+			return -EINVAL;
+		}
+		priv->cfg_params.scanning_period = val;
+	}
+
+	if (of_property_read_u32(np, "debounce_timeout", &val) >= 0) {
+		if (val > 255) {
+			dev_err(dev, "debounce_timeout (%u) must be [0-255]\n",
+				val);
+			return -EINVAL;
+		}
+		priv->cfg_params.debounce_timeout = val;
+	}
+
+	if (of_property_read_u32(np, "settling_timeout", &val) >= 0) {
+		if (val > 11) {
+			dev_err(dev, "settling_timeout (%u) must be [0-11]\n",
+				val);
+			return -EINVAL;
+		}
+		priv->cfg_params.settling_timeout = val;
+	}
+
+	if (of_property_read_u32(np, "touch_timeout", &val) >= 0) {
+		if (val > 255) {
+			dev_err(dev, "touch_timeout (%u) must be [0-255]\n",
+				val);
+			return -EINVAL;
+		}
+		priv->cfg_params.touch_timeout = val;
+	}
+
+	if (of_property_read_u32(np, "average_data", &val) >= 0) {
+		if (val > 8) {
+			dev_err(dev, "average_data (%u) must be [0-8]\n", val);
+			return -EINVAL;
+		}
+		priv->cfg_params.average_data = val;
+	}
+
+	if (of_property_read_u32(np, "fifo_threshold", &val) >= 0) {
+		if (val > 31) {
+			dev_err(dev, "fifo_threshold (%u)) must be [0-31]\n",
+				val);
+			return -EINVAL;
+		}
+		priv->cfg_params.fifo_threshold = val;
+	}
+
+	/* Parse optional properties. */
+	of_property_read_u32(np, "touchscreen-size-x", &priv->cfg_params.max_x);
+	of_property_read_u32(np, "touchscreen-size-y", &priv->cfg_params.max_y);
+
+	of_property_read_u32(np, "touchscreen-fuzz-x",
+			     &priv->cfg_params.fuzz_x);
+	of_property_read_u32(np, "touchscreen-fuzz-y",
+			     &priv->cfg_params.fuzz_y);
+
+	priv->cfg_params.invert_x =
+		of_property_read_bool(np, "touchscreen-inverted-x");
+	priv->cfg_params.invert_y =
+		of_property_read_bool(np, "touchscreen-inverted-y");
+
+	return 0;
+}
+
+static int iproc_ts_probe(struct platform_device *pdev)
+{
+	struct iproc_ts_priv *priv;
+	struct input_dev *idev;
+	struct resource *res;
+	int irq;
+	int error;
+
+	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	/* touchscreen controller memory mapped regs */
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	priv->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(priv->regs)) {
+		error = PTR_ERR(priv->regs);
+		dev_err(&pdev->dev, "unable to map I/O memory: %d\n", error);
+		return error;
+	}
+
+	priv->tsc_clk = devm_clk_get(&pdev->dev, "tsc_clk");
+	if (IS_ERR(priv->tsc_clk)) {
+		error = PTR_ERR(priv->tsc_clk);
+		dev_err(&pdev->dev,
+			"failed getting clock tsc_clk: %d\n", error);
+		return error;
+	}
+
+	priv->pdev = pdev;
+	error = iproc_get_tsc_config(&pdev->dev, priv);
+	if (error) {
+		dev_err(&pdev->dev, "get_tsc_config failed: %d\n", error);
+		return error;
+	}
+
+	idev = devm_input_allocate_device(&pdev->dev);
+	if (!idev) {
+		dev_err(&pdev->dev, "failed to allocate input device\n");
+		return -ENOMEM;
+	}
+
+	priv->idev = idev;
+	priv->pen_status = PEN_UP_STATUS;
+
+	/* Set input device info  */
+	idev->name = IPROC_TS_NAME;
+	idev->dev.parent = &pdev->dev;
+
+	idev->id.bustype = BUS_HOST;
+	idev->id.vendor = SERIO_UNKNOWN;
+	idev->id.product = 0;
+	idev->id.version = 0;
+
+	idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
+	__set_bit(BTN_TOUCH, idev->keybit);
+
+	input_set_abs_params(idev, ABS_X, X_MIN, priv->cfg_params.max_x,
+			     priv->cfg_params.fuzz_x, 0);
+	input_set_abs_params(idev, ABS_Y, Y_MIN, priv->cfg_params.max_y,
+			     priv->cfg_params.fuzz_y, 0);
+
+	idev->open = iproc_ts_start;
+	idev->close = iproc_ts_stop;
+
+	input_set_drvdata(idev, priv);
+	platform_set_drvdata(pdev, priv);
+
+	/* get interrupt */
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0) {
+		dev_err(&pdev->dev, "platform_get_irq failed: %d\n", irq);
+		return irq;
+	}
+
+	error = devm_request_irq(&pdev->dev, irq,
+				 iproc_touchscreen_interrupt,
+				 IRQF_SHARED, IPROC_TS_NAME, pdev);
+	if (error)
+		return error;
+
+	error = input_register_device(priv->idev);
+	if (error) {
+		dev_err(&pdev->dev,
+			"failed to register input device: %d\n", error);
+		return error;
+	}
+
+	return 0;
+}
+
+static const struct of_device_id iproc_ts_of_match[] = {
+	{.compatible = "brcm,iproc-touchscreen", },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, iproc_ts_of_match);
+
+static struct platform_driver iproc_ts_driver = {
+	.probe = iproc_ts_probe,
+	.driver = {
+		.name	= IPROC_TS_NAME,
+		.of_match_table = of_match_ptr(iproc_ts_of_match),
+	},
+};
+
+module_platform_driver(iproc_ts_driver);
+
+MODULE_DESCRIPTION("IPROC Touchscreen driver");
+MODULE_AUTHOR("Broadcom");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/input/touchscreen/chipone_icn8318.c b/drivers/input/touchscreen/chipone_icn8318.c
new file mode 100644
index 000000000000..32e9db0e04bf
--- /dev/null
+++ b/drivers/input/touchscreen/chipone_icn8318.c
@@ -0,0 +1,316 @@
+/*
+ * Driver for ChipOne icn8318 i2c touchscreen controller
+ *
+ * Copyright (c) 2015 Red Hat 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 the License, or
+ * (at your option) any later version.
+ *
+ * Red Hat authors:
+ * Hans de Goede <hdegoede@redhat.com>
+ */
+
+#include <linux/gpio/consumer.h>
+#include <linux/interrupt.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/input/mt.h>
+#include <linux/module.h>
+#include <linux/of.h>
+
+#define ICN8318_REG_POWER		4
+#define ICN8318_REG_TOUCHDATA		16
+
+#define ICN8318_POWER_ACTIVE		0
+#define ICN8318_POWER_MONITOR		1
+#define ICN8318_POWER_HIBERNATE		2
+
+#define ICN8318_MAX_TOUCHES		5
+
+struct icn8318_touch {
+	__u8 slot;
+	__be16 x;
+	__be16 y;
+	__u8 pressure;	/* Seems more like finger width then pressure really */
+	__u8 event;
+/* The difference between 2 and 3 is unclear */
+#define ICN8318_EVENT_NO_DATA	1 /* No finger seen yet since wakeup */
+#define ICN8318_EVENT_UPDATE1	2 /* New or updated coordinates */
+#define ICN8318_EVENT_UPDATE2	3 /* New or updated coordinates */
+#define ICN8318_EVENT_END	4 /* Finger lifted */
+} __packed;
+
+struct icn8318_touch_data {
+	__u8 softbutton;
+	__u8 touch_count;
+	struct icn8318_touch touches[ICN8318_MAX_TOUCHES];
+} __packed;
+
+struct icn8318_data {
+	struct i2c_client *client;
+	struct input_dev *input;
+	struct gpio_desc *wake_gpio;
+	u32 max_x;
+	u32 max_y;
+	bool invert_x;
+	bool invert_y;
+	bool swap_x_y;
+};
+
+static int icn8318_read_touch_data(struct i2c_client *client,
+				   struct icn8318_touch_data *touch_data)
+{
+	u8 reg = ICN8318_REG_TOUCHDATA;
+	struct i2c_msg msg[2] = {
+		{
+			.addr = client->addr,
+			.len = 1,
+			.buf = &reg
+		},
+		{
+			.addr = client->addr,
+			.flags = I2C_M_RD,
+			.len = sizeof(struct icn8318_touch_data),
+			.buf = (u8 *)touch_data
+		}
+	};
+
+	return i2c_transfer(client->adapter, msg, 2);
+}
+
+static inline bool icn8318_touch_active(u8 event)
+{
+	return (event == ICN8318_EVENT_UPDATE1) ||
+	       (event == ICN8318_EVENT_UPDATE2);
+}
+
+static irqreturn_t icn8318_irq(int irq, void *dev_id)
+{
+	struct icn8318_data *data = dev_id;
+	struct device *dev = &data->client->dev;
+	struct icn8318_touch_data touch_data;
+	int i, ret, x, y;
+
+	ret = icn8318_read_touch_data(data->client, &touch_data);
+	if (ret < 0) {
+		dev_err(dev, "Error reading touch data: %d\n", ret);
+		return IRQ_HANDLED;
+	}
+
+	if (touch_data.softbutton) {
+		/*
+		 * Other data is invalid when a softbutton is pressed.
+		 * This needs some extra devicetree bindings to map the icn8318
+		 * softbutton codes to evdev codes. Currently no known devices
+		 * use this.
+		 */
+		return IRQ_HANDLED;
+	}
+
+	if (touch_data.touch_count > ICN8318_MAX_TOUCHES) {
+		dev_warn(dev, "Too much touches %d > %d\n",
+			 touch_data.touch_count, ICN8318_MAX_TOUCHES);
+		touch_data.touch_count = ICN8318_MAX_TOUCHES;
+	}
+
+	for (i = 0; i < touch_data.touch_count; i++) {
+		struct icn8318_touch *touch = &touch_data.touches[i];
+		bool act = icn8318_touch_active(touch->event);
+
+		input_mt_slot(data->input, touch->slot);
+		input_mt_report_slot_state(data->input, MT_TOOL_FINGER, act);
+		if (!act)
+			continue;
+
+		x = be16_to_cpu(touch->x);
+		y = be16_to_cpu(touch->y);
+
+		if (data->invert_x)
+			x = data->max_x - x;
+
+		if (data->invert_y)
+			y = data->max_y - y;
+
+		if (!data->swap_x_y) {
+			input_event(data->input, EV_ABS, ABS_MT_POSITION_X, x);
+			input_event(data->input, EV_ABS, ABS_MT_POSITION_Y, y);
+		} else {
+			input_event(data->input, EV_ABS, ABS_MT_POSITION_X, y);
+			input_event(data->input, EV_ABS, ABS_MT_POSITION_Y, x);
+		}
+	}
+
+	input_mt_sync_frame(data->input);
+	input_sync(data->input);
+
+	return IRQ_HANDLED;
+}
+
+static int icn8318_start(struct input_dev *dev)
+{
+	struct icn8318_data *data = input_get_drvdata(dev);
+
+	enable_irq(data->client->irq);
+	gpiod_set_value_cansleep(data->wake_gpio, 1);
+
+	return 0;
+}
+
+static void icn8318_stop(struct input_dev *dev)
+{
+	struct icn8318_data *data = input_get_drvdata(dev);
+
+	disable_irq(data->client->irq);
+	i2c_smbus_write_byte_data(data->client, ICN8318_REG_POWER,
+				  ICN8318_POWER_HIBERNATE);
+	gpiod_set_value_cansleep(data->wake_gpio, 0);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int icn8318_suspend(struct device *dev)
+{
+	struct icn8318_data *data = i2c_get_clientdata(to_i2c_client(dev));
+
+	mutex_lock(&data->input->mutex);
+	if (data->input->users)
+		icn8318_stop(data->input);
+	mutex_unlock(&data->input->mutex);
+
+	return 0;
+}
+
+static int icn8318_resume(struct device *dev)
+{
+	struct icn8318_data *data = i2c_get_clientdata(to_i2c_client(dev));
+
+	mutex_lock(&data->input->mutex);
+	if (data->input->users)
+		icn8318_start(data->input);
+	mutex_unlock(&data->input->mutex);
+
+	return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(icn8318_pm_ops, icn8318_suspend, icn8318_resume);
+
+static int icn8318_probe(struct i2c_client *client,
+			 const struct i2c_device_id *id)
+{
+	struct device *dev = &client->dev;
+	struct device_node *np = dev->of_node;
+	struct icn8318_data *data;
+	struct input_dev *input;
+	u32 fuzz_x = 0, fuzz_y = 0;
+	int error;
+
+	if (!client->irq) {
+		dev_err(dev, "Error no irq specified\n");
+		return -EINVAL;
+	}
+
+	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	data->wake_gpio = devm_gpiod_get(dev, "wake", GPIOD_OUT_LOW);
+	if (IS_ERR(data->wake_gpio)) {
+		error = PTR_ERR(data->wake_gpio);
+		if (error != -EPROBE_DEFER)
+			dev_err(dev, "Error getting wake gpio: %d\n", error);
+		return error;
+	}
+
+	if (of_property_read_u32(np, "touchscreen-size-x", &data->max_x) ||
+	    of_property_read_u32(np, "touchscreen-size-y", &data->max_y)) {
+		dev_err(dev, "Error touchscreen-size-x and/or -y missing\n");
+		return -EINVAL;
+	}
+
+	/* Optional */
+	of_property_read_u32(np, "touchscreen-fuzz-x", &fuzz_x);
+	of_property_read_u32(np, "touchscreen-fuzz-y", &fuzz_y);
+	data->invert_x = of_property_read_bool(np, "touchscreen-inverted-x");
+	data->invert_y = of_property_read_bool(np, "touchscreen-inverted-y");
+	data->swap_x_y = of_property_read_bool(np, "touchscreen-swapped-x-y");
+
+	input = devm_input_allocate_device(dev);
+	if (!input)
+		return -ENOMEM;
+
+	input->name = client->name;
+	input->id.bustype = BUS_I2C;
+	input->open = icn8318_start;
+	input->close = icn8318_stop;
+	input->dev.parent = dev;
+
+	if (!data->swap_x_y) {
+		input_set_abs_params(input, ABS_MT_POSITION_X, 0,
+				     data->max_x, fuzz_x, 0);
+		input_set_abs_params(input, ABS_MT_POSITION_Y, 0,
+				     data->max_y, fuzz_y, 0);
+	} else {
+		input_set_abs_params(input, ABS_MT_POSITION_X, 0,
+				     data->max_y, fuzz_y, 0);
+		input_set_abs_params(input, ABS_MT_POSITION_Y, 0,
+				     data->max_x, fuzz_x, 0);
+	}
+
+	error = input_mt_init_slots(input, ICN8318_MAX_TOUCHES,
+				    INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
+	if (error)
+		return error;
+
+	data->client = client;
+	data->input = input;
+	input_set_drvdata(input, data);
+
+	error = devm_request_threaded_irq(dev, client->irq, NULL, icn8318_irq,
+					  IRQF_ONESHOT, client->name, data);
+	if (error) {
+		dev_err(dev, "Error requesting irq: %d\n", error);
+		return error;
+	}
+
+	/* Stop device till opened */
+	icn8318_stop(data->input);
+
+	error = input_register_device(input);
+	if (error)
+		return error;
+
+	i2c_set_clientdata(client, data);
+
+	return 0;
+}
+
+static const struct of_device_id icn8318_of_match[] = {
+	{ .compatible = "chipone,icn8318" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, icn8318_of_match);
+
+/* This is useless for OF-enabled devices, but it is needed by I2C subsystem */
+static const struct i2c_device_id icn8318_i2c_id[] = {
+	{ },
+};
+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,
+	},
+	.probe = icn8318_probe,
+	.id_table = icn8318_i2c_id,
+};
+
+module_i2c_driver(icn8318_driver);
+
+MODULE_DESCRIPTION("ChipOne icn8318 I2C Touchscreen Driver");
+MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c
index d4c24fb7704f..e6aef3e48bd9 100644
--- a/drivers/input/touchscreen/edt-ft5x06.c
+++ b/drivers/input/touchscreen/edt-ft5x06.c
@@ -37,6 +37,7 @@
 #include <linux/gpio.h>
 #include <linux/of_gpio.h>
 #include <linux/input/mt.h>
+#include <linux/input/touchscreen.h>
 #include <linux/input/edt-ft5x06.h>
 
 #define MAX_SUPPORT_POINTS		5
@@ -1034,7 +1035,6 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client,
 	input->id.bustype = BUS_I2C;
 	input->dev.parent = &client->dev;
 
-	__set_bit(EV_SYN, input->evbit);
 	__set_bit(EV_KEY, input->evbit);
 	__set_bit(EV_ABS, input->evbit);
 	__set_bit(BTN_TOUCH, input->keybit);
@@ -1044,6 +1044,10 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client,
 			     0, tsdata->num_x * 64 - 1, 0, 0);
 	input_set_abs_params(input, ABS_MT_POSITION_Y,
 			     0, tsdata->num_y * 64 - 1, 0, 0);
+
+	if (!pdata)
+		touchscreen_parse_of_params(input);
+
 	error = input_mt_init_slots(input, MAX_SUPPORT_POINTS, 0);
 	if (error) {
 		dev_err(&client->dev, "Unable to init MT slots.\n");
diff --git a/drivers/input/touchscreen/elants_i2c.c b/drivers/input/touchscreen/elants_i2c.c
index 926c58e540c0..43b3c9c2d788 100644
--- a/drivers/input/touchscreen/elants_i2c.c
+++ b/drivers/input/touchscreen/elants_i2c.c
@@ -98,7 +98,6 @@
 #define MAX_FW_UPDATE_RETRIES	30
 
 #define ELAN_FW_PAGESIZE	132
-#define ELAN_FW_FILENAME	"elants_i2c.bin"
 
 /* calibration timeout definition */
 #define ELAN_CALI_TIMEOUT_MSEC	10000
@@ -697,12 +696,19 @@ static int elants_i2c_fw_update(struct elants_data *ts)
 {
 	struct i2c_client *client = ts->client;
 	const struct firmware *fw;
+	char *fw_name;
 	int error;
 
-	error = request_firmware(&fw, ELAN_FW_FILENAME, &client->dev);
+	fw_name = kasprintf(GFP_KERNEL, "elants_i2c_%4x.bin", ts->hw_version);
+	if (!fw_name)
+		return -ENOMEM;
+
+	dev_info(&client->dev, "requesting fw name = %s\n", fw_name);
+	error = request_firmware(&fw, fw_name, &client->dev);
+	kfree(fw_name);
 	if (error) {
-		dev_err(&client->dev, "failed to request firmware %s: %d\n",
-			ELAN_FW_FILENAME, error);
+		dev_err(&client->dev, "failed to request firmware: %d\n",
+			error);
 		return error;
 	}
 
diff --git a/drivers/input/touchscreen/goodix.c b/drivers/input/touchscreen/goodix.c
index ca196689f025..3af16984d57c 100644
--- a/drivers/input/touchscreen/goodix.c
+++ b/drivers/input/touchscreen/goodix.c
@@ -23,6 +23,8 @@
 #include <linux/irq.h>
 #include <linux/interrupt.h>
 #include <linux/slab.h>
+#include <linux/acpi.h>
+#include <linux/of.h>
 #include <asm/unaligned.h>
 
 struct goodix_ts_data {
@@ -48,6 +50,7 @@ struct goodix_ts_data {
 #define GOODIX_REG_VERSION		0x8140
 
 #define RESOLUTION_LOC		1
+#define MAX_CONTACTS_LOC	5
 #define TRIGGER_LOC		6
 
 static const unsigned long goodix_irq_flags[] = {
@@ -99,7 +102,7 @@ static int goodix_ts_read_input_report(struct goodix_ts_data *ts, u8 *data)
 	}
 
 	touch_num = data[0] & 0x0f;
-	if (touch_num > GOODIX_MAX_CONTACTS)
+	if (touch_num > ts->max_touch_num)
 		return -EPROTO;
 
 	if (touch_num > 1) {
@@ -141,7 +144,7 @@ static void goodix_ts_report_touch(struct goodix_ts_data *ts, u8 *coor_data)
  */
 static void goodix_process_events(struct goodix_ts_data *ts)
 {
-	u8  point_data[1 + GOODIX_CONTACT_SIZE * GOODIX_MAX_CONTACTS];
+	u8  point_data[1 + GOODIX_CONTACT_SIZE * ts->max_touch_num];
 	int touch_num;
 	int i;
 
@@ -202,21 +205,23 @@ static void goodix_read_config(struct goodix_ts_data *ts)
 		ts->abs_x_max = GOODIX_MAX_WIDTH;
 		ts->abs_y_max = GOODIX_MAX_HEIGHT;
 		ts->int_trigger_type = GOODIX_INT_TRIGGER;
+		ts->max_touch_num = GOODIX_MAX_CONTACTS;
 		return;
 	}
 
 	ts->abs_x_max = get_unaligned_le16(&config[RESOLUTION_LOC]);
 	ts->abs_y_max = get_unaligned_le16(&config[RESOLUTION_LOC + 2]);
-	ts->int_trigger_type = (config[TRIGGER_LOC]) & 0x03;
-	if (!ts->abs_x_max || !ts->abs_y_max) {
+	ts->int_trigger_type = config[TRIGGER_LOC] & 0x03;
+	ts->max_touch_num = config[MAX_CONTACTS_LOC] & 0x0f;
+	if (!ts->abs_x_max || !ts->abs_y_max || !ts->max_touch_num) {
 		dev_err(&ts->client->dev,
 			"Invalid config, using defaults\n");
 		ts->abs_x_max = GOODIX_MAX_WIDTH;
 		ts->abs_y_max = GOODIX_MAX_HEIGHT;
+		ts->max_touch_num = GOODIX_MAX_CONTACTS;
 	}
 }
 
-
 /**
  * goodix_read_version - Read goodix touchscreen version
  *
@@ -295,7 +300,7 @@ static int goodix_request_input_dev(struct goodix_ts_data *ts)
 	input_set_abs_params(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0, 255, 0, 0);
 	input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);
 
-	input_mt_init_slots(ts->input_dev, GOODIX_MAX_CONTACTS,
+	input_mt_init_slots(ts->input_dev, ts->max_touch_num,
 			    INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
 
 	ts->input_dev->name = "Goodix Capacitive TouchScreen";
@@ -372,11 +377,27 @@ static const struct i2c_device_id goodix_ts_id[] = {
 	{ }
 };
 
+#ifdef CONFIG_ACPI
 static const struct acpi_device_id goodix_acpi_match[] = {
 	{ "GDIX1001", 0 },
 	{ }
 };
 MODULE_DEVICE_TABLE(acpi, goodix_acpi_match);
+#endif
+
+#ifdef CONFIG_OF
+static const struct of_device_id goodix_of_match[] = {
+	{ .compatible = "goodix,gt911" },
+	{ .compatible = "goodix,gt9110" },
+	{ .compatible = "goodix,gt912" },
+	{ .compatible = "goodix,gt927" },
+	{ .compatible = "goodix,gt9271" },
+	{ .compatible = "goodix,gt928" },
+	{ .compatible = "goodix,gt967" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, goodix_of_match);
+#endif
 
 static struct i2c_driver goodix_ts_driver = {
 	.probe = goodix_ts_probe,
@@ -384,7 +405,8 @@ static struct i2c_driver goodix_ts_driver = {
 	.driver = {
 		.name = "Goodix-TS",
 		.owner = THIS_MODULE,
-		.acpi_match_table = goodix_acpi_match,
+		.acpi_match_table = ACPI_PTR(goodix_acpi_match),
+		.of_match_table = of_match_ptr(goodix_of_match),
 	},
 };
 module_i2c_driver(goodix_ts_driver);
diff --git a/drivers/input/touchscreen/of_touchscreen.c b/drivers/input/touchscreen/of_touchscreen.c
index f8f9b84230b1..b82b5207c78b 100644
--- a/drivers/input/touchscreen/of_touchscreen.c
+++ b/drivers/input/touchscreen/of_touchscreen.c
@@ -11,8 +11,41 @@
 
 #include <linux/of.h>
 #include <linux/input.h>
+#include <linux/input/mt.h>
 #include <linux/input/touchscreen.h>
 
+static u32 of_get_optional_u32(struct device_node *np,
+			       const char *property)
+{
+	u32 val = 0;
+
+	of_property_read_u32(np, property, &val);
+
+	return val;
+}
+
+static void touchscreen_set_params(struct input_dev *dev,
+				   unsigned long axis,
+				   int max, int fuzz)
+{
+	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");
+		return;
+	}
+
+	absinfo = &dev->absinfo[axis];
+	absinfo->maximum = max;
+	absinfo->fuzz = fuzz;
+}
+
 /**
  * touchscreen_parse_of_params - parse common touchscreen DT properties
  * @dev: device that should be parsed
@@ -24,22 +57,31 @@
 void touchscreen_parse_of_params(struct input_dev *dev)
 {
 	struct device_node *np = dev->dev.parent->of_node;
-	struct input_absinfo *absinfo;
+	u32 maximum, fuzz;
 
 	input_alloc_absinfo(dev);
 	if (!dev->absinfo)
 		return;
 
-	absinfo = &dev->absinfo[ABS_X];
-	of_property_read_u32(np, "touchscreen-size-x", &absinfo->maximum);
-	of_property_read_u32(np, "touchscreen-fuzz-x", &absinfo->fuzz);
+	maximum = of_get_optional_u32(np, "touchscreen-size-x");
+	fuzz = of_get_optional_u32(np, "touchscreen-fuzz-x");
+	if (maximum || fuzz) {
+		touchscreen_set_params(dev, ABS_X, maximum, fuzz);
+		touchscreen_set_params(dev, ABS_MT_POSITION_X, maximum, fuzz);
+	}
 
-	absinfo = &dev->absinfo[ABS_Y];
-	of_property_read_u32(np, "touchscreen-size-y", &absinfo->maximum);
-	of_property_read_u32(np, "touchscreen-fuzz-y", &absinfo->fuzz);
+	maximum = of_get_optional_u32(np, "touchscreen-size-y");
+	fuzz = of_get_optional_u32(np, "touchscreen-fuzz-y");
+	if (maximum || fuzz) {
+		touchscreen_set_params(dev, ABS_Y, maximum, fuzz);
+		touchscreen_set_params(dev, ABS_MT_POSITION_Y, maximum, fuzz);
+	}
 
-	absinfo = &dev->absinfo[ABS_PRESSURE];
-	of_property_read_u32(np, "touchscreen-max-pressure", &absinfo->maximum);
-	of_property_read_u32(np, "touchscreen-fuzz-pressure", &absinfo->fuzz);
+	maximum = of_get_optional_u32(np, "touchscreen-max-pressure");
+	fuzz = of_get_optional_u32(np, "touchscreen-fuzz-pressure");
+	if (maximum || fuzz) {
+		touchscreen_set_params(dev, ABS_PRESSURE, maximum, fuzz);
+		touchscreen_set_params(dev, ABS_MT_PRESSURE, maximum, fuzz);
+	}
 }
 EXPORT_SYMBOL(touchscreen_parse_of_params);
diff --git a/drivers/input/touchscreen/sun4i-ts.c b/drivers/input/touchscreen/sun4i-ts.c
index b93a28b955fd..c0116994067d 100644
--- a/drivers/input/touchscreen/sun4i-ts.c
+++ b/drivers/input/touchscreen/sun4i-ts.c
@@ -30,6 +30,10 @@
  * These kinds of heuristics are just asking for trouble (and don't belong
  * in the kernel). So this driver offers straight forward, reliable single
  * touch functionality only.
+ *
+ * s.a. A20 User Manual "1.15 TP" (Documentation/arm/sunxi/README)
+ * (looks like the description in the A20 User Manual v1.3 is better
+ * than the one in the A10 User Manual v.1.5)
  */
 
 #include <linux/err.h>
@@ -193,7 +197,7 @@ static int sun4i_get_temp(const struct sun4i_ts_data *ts, long *temp)
 	if (ts->temp_data == -1)
 		return -EAGAIN;
 
-	*temp = (ts->temp_data - ts->temp_offset) * ts->temp_step;
+	*temp = ts->temp_data * ts->temp_step - ts->temp_offset;
 
 	return 0;
 }
@@ -246,6 +250,8 @@ static int sun4i_ts_probe(struct platform_device *pdev)
 	int error;
 	u32 reg;
 	bool ts_attached;
+	u32 tp_sensitive_adjust = 15;
+	u32 filter_type = 1;
 
 	ts = devm_kzalloc(dev, sizeof(struct sun4i_ts_data), GFP_KERNEL);
 	if (!ts)
@@ -255,22 +261,31 @@ static int sun4i_ts_probe(struct platform_device *pdev)
 	ts->ignore_fifo_data = true;
 	ts->temp_data = -1;
 	if (of_device_is_compatible(np, "allwinner,sun6i-a31-ts")) {
-		/* Allwinner SDK has temperature = -271 + (value / 6) (C) */
-		ts->temp_offset = 1626;
+		/* Allwinner SDK has temperature (C) = (value / 6) - 271 */
+		ts->temp_offset = 271000;
 		ts->temp_step = 167;
+	} else if (of_device_is_compatible(np, "allwinner,sun4i-a10-ts")) {
+		/*
+		 * The A10 temperature sensor has quite a wide spread, these
+		 * parameters are based on the averaging of the calibration
+		 * results of 4 completely different boards, with a spread of
+		 * temp_step from 0.096 - 0.170 and temp_offset from 176 - 331.
+		 */
+		ts->temp_offset = 257000;
+		ts->temp_step = 133;
 	} else {
 		/*
 		 * The user manuals do not contain the formula for calculating
 		 * the temperature. The formula used here is from the AXP209,
 		 * which is designed by X-Powers, an affiliate of Allwinner:
 		 *
-		 *     temperature = -144.7 + (value * 0.1)
+		 *     temperature (C) = (value * 0.1) - 144.7
 		 *
 		 * Allwinner does not have any documentation whatsoever for
 		 * this hardware. Moreover, it is claimed that the sensor
 		 * is inaccurate and cannot work properly.
 		 */
-		ts->temp_offset = 1447;
+		ts->temp_offset = 144700;
 		ts->temp_step = 100;
 	}
 
@@ -313,14 +328,20 @@ static int sun4i_ts_probe(struct platform_device *pdev)
 	       ts->base + TP_CTRL0);
 
 	/*
-	 * sensitive_adjust = 15 : max, which is not all that sensitive,
+	 * tp_sensitive_adjust is an optional property
 	 * tp_mode = 0 : only x and y coordinates, as we don't use dual touch
 	 */
-	writel(TP_SENSITIVE_ADJUST(15) | TP_MODE_SELECT(0),
+	of_property_read_u32(np, "allwinner,tp-sensitive-adjust",
+			     &tp_sensitive_adjust);
+	writel(TP_SENSITIVE_ADJUST(tp_sensitive_adjust) | TP_MODE_SELECT(0),
 	       ts->base + TP_CTRL2);
 
-	/* Enable median filter, type 1 : 5/3 */
-	writel(FILTER_EN(1) | FILTER_TYPE(1), ts->base + TP_CTRL3);
+	/*
+	 * Enable median and averaging filter, optional property for
+	 * filter type.
+	 */
+	of_property_read_u32(np, "allwinner,filter-type", &filter_type);
+	writel(FILTER_EN(1) | FILTER_TYPE(filter_type), ts->base + TP_CTRL3);
 
 	/* Enable temperature measurement, period 1953 (2 seconds) */
 	writel(TEMP_ENABLE(1) | TEMP_PERIOD(1953), ts->base + TP_TPR);
@@ -330,10 +351,10 @@ static int sun4i_ts_probe(struct platform_device *pdev)
 	 * finally enable tp mode.
 	 */
 	reg = STYLUS_UP_DEBOUN(5) | STYLUS_UP_DEBOUN_EN(1);
-	if (of_device_is_compatible(np, "allwinner,sun4i-a10-ts"))
-		reg |= TP_MODE_EN(1);
-	else
+	if (of_device_is_compatible(np, "allwinner,sun6i-a31-ts"))
 		reg |= SUN6I_TP_MODE_EN(1);
+	else
+		reg |= TP_MODE_EN(1);
 	writel(reg, ts->base + TP_CTRL1);
 
 	/*
@@ -383,6 +404,7 @@ static int sun4i_ts_remove(struct platform_device *pdev)
 
 static const struct of_device_id sun4i_ts_of_match[] = {
 	{ .compatible = "allwinner,sun4i-a10-ts", },
+	{ .compatible = "allwinner,sun5i-a13-ts", },
 	{ .compatible = "allwinner,sun6i-a31-ts", },
 	{ /* sentinel */ }
 };
diff --git a/drivers/input/touchscreen/sx8654.c b/drivers/input/touchscreen/sx8654.c
new file mode 100644
index 000000000000..aecb9ad2e701
--- /dev/null
+++ b/drivers/input/touchscreen/sx8654.c
@@ -0,0 +1,286 @@
+/*
+ * Driver for Semtech SX8654 I2C touchscreen controller.
+ *
+ * Copyright (c) 2015 Armadeus Systems
+ *	Sébastien Szymanski <sebastien.szymanski@armadeus.com>
+ *
+ * Using code from:
+ *  - sx865x.c
+ *	Copyright (c) 2013 U-MoBo Srl
+ *	Pierluigi Passaro <p.passaro@u-mobo.com>
+ *  - sx8650.c
+ *      Copyright (c) 2009 Wayne Roberts
+ *  - tsc2007.c
+ *      Copyright (c) 2008 Kwangwoo Lee
+ *  - ads7846.c
+ *      Copyright (c) 2005 David Brownell
+ *      Copyright (c) 2006 Nokia Corporation
+ *  - corgi_ts.c
+ *      Copyright (C) 2004-2005 Richard Purdie
+ *  - omap_ts.[hc], ads7846.h, ts_osk.c
+ *      Copyright (C) 2002 MontaVista Software
+ *      Copyright (C) 2004 Texas Instruments
+ *      Copyright (C) 2005 Dirk Behme
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ */
+
+#include <linux/input.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+
+/* register addresses */
+#define I2C_REG_TOUCH0			0x00
+#define I2C_REG_TOUCH1			0x01
+#define I2C_REG_CHANMASK		0x04
+#define I2C_REG_IRQMASK			0x22
+#define I2C_REG_IRQSRC			0x23
+#define I2C_REG_SOFTRESET		0x3f
+
+/* commands */
+#define CMD_READ_REGISTER		0x40
+#define CMD_MANUAL			0xc0
+#define CMD_PENTRG			0xe0
+
+/* value for I2C_REG_SOFTRESET */
+#define SOFTRESET_VALUE			0xde
+
+/* bits for I2C_REG_IRQSRC */
+#define IRQ_PENTOUCH_TOUCHCONVDONE	0x08
+#define IRQ_PENRELEASE			0x04
+
+/* bits for RegTouch1 */
+#define CONDIRQ				0x20
+#define FILT_7SA			0x03
+
+/* bits for I2C_REG_CHANMASK */
+#define CONV_X				0x80
+#define CONV_Y				0x40
+
+/* coordinates rate: higher nibble of CTRL0 register */
+#define RATE_MANUAL			0x00
+#define RATE_5000CPS			0xf0
+
+/* power delay: lower nibble of CTRL0 register */
+#define POWDLY_1_1MS			0x0b
+
+#define MAX_12BIT			((1 << 12) - 1)
+
+struct sx8654 {
+	struct input_dev *input;
+	struct i2c_client *client;
+};
+
+static irqreturn_t sx8654_irq(int irq, void *handle)
+{
+	struct sx8654 *sx8654 = handle;
+	int irqsrc;
+	u8 data[4];
+	unsigned int x, y;
+	int retval;
+
+	irqsrc = i2c_smbus_read_byte_data(sx8654->client,
+					  CMD_READ_REGISTER | I2C_REG_IRQSRC);
+	dev_dbg(&sx8654->client->dev, "irqsrc = 0x%x", irqsrc);
+
+	if (irqsrc < 0)
+		goto out;
+
+	if (irqsrc & IRQ_PENRELEASE) {
+		dev_dbg(&sx8654->client->dev, "pen release interrupt");
+
+		input_report_key(sx8654->input, BTN_TOUCH, 0);
+		input_sync(sx8654->input);
+	}
+
+	if (irqsrc & IRQ_PENTOUCH_TOUCHCONVDONE) {
+		dev_dbg(&sx8654->client->dev, "pen touch interrupt");
+
+		retval = i2c_master_recv(sx8654->client, data, sizeof(data));
+		if (retval != sizeof(data))
+			goto out;
+
+		/* invalid data */
+		if (unlikely(data[0] & 0x80 || data[2] & 0x80))
+			goto out;
+
+		x = ((data[0] & 0xf) << 8) | (data[1]);
+		y = ((data[2] & 0xf) << 8) | (data[3]);
+
+		input_report_abs(sx8654->input, ABS_X, x);
+		input_report_abs(sx8654->input, ABS_Y, y);
+		input_report_key(sx8654->input, BTN_TOUCH, 1);
+		input_sync(sx8654->input);
+
+		dev_dbg(&sx8654->client->dev, "point(%4d,%4d)\n", x, y);
+	}
+
+out:
+	return IRQ_HANDLED;
+}
+
+static int sx8654_open(struct input_dev *dev)
+{
+	struct sx8654 *sx8654 = input_get_drvdata(dev);
+	struct i2c_client *client = sx8654->client;
+	int error;
+
+	/* enable pen trigger mode */
+	error = i2c_smbus_write_byte_data(client, I2C_REG_TOUCH0,
+					  RATE_5000CPS | POWDLY_1_1MS);
+	if (error) {
+		dev_err(&client->dev, "writing to I2C_REG_TOUCH0 failed");
+		return error;
+	}
+
+	error = i2c_smbus_write_byte(client, CMD_PENTRG);
+	if (error) {
+		dev_err(&client->dev, "writing command CMD_PENTRG failed");
+		return error;
+	}
+
+	enable_irq(client->irq);
+
+	return 0;
+}
+
+static void sx8654_close(struct input_dev *dev)
+{
+	struct sx8654 *sx8654 = input_get_drvdata(dev);
+	struct i2c_client *client = sx8654->client;
+	int error;
+
+	disable_irq(client->irq);
+
+	/* enable manual mode mode */
+	error = i2c_smbus_write_byte(client, CMD_MANUAL);
+	if (error) {
+		dev_err(&client->dev, "writing command CMD_MANUAL failed");
+		return;
+	}
+
+	error = i2c_smbus_write_byte_data(client, I2C_REG_TOUCH0, 0);
+	if (error) {
+		dev_err(&client->dev, "writing to I2C_REG_TOUCH0 failed");
+		return;
+	}
+}
+
+static int sx8654_probe(struct i2c_client *client,
+			const struct i2c_device_id *id)
+{
+	struct sx8654 *sx8654;
+	struct input_dev *input;
+	int error;
+
+	if (!i2c_check_functionality(client->adapter,
+				     I2C_FUNC_SMBUS_READ_WORD_DATA))
+		return -ENXIO;
+
+	sx8654 = devm_kzalloc(&client->dev, sizeof(*sx8654), GFP_KERNEL);
+	if (!sx8654)
+		return -ENOMEM;
+
+	input = devm_input_allocate_device(&client->dev);
+	if (!sx8654)
+		return -ENOMEM;
+
+	input->name = "SX8654 I2C Touchscreen";
+	input->id.bustype = BUS_I2C;
+	input->dev.parent = &client->dev;
+	input->open = sx8654_open;
+	input->close = sx8654_close;
+
+	__set_bit(INPUT_PROP_DIRECT, input->propbit);
+	input_set_capability(input, EV_KEY, BTN_TOUCH);
+	input_set_abs_params(input, ABS_X, 0, MAX_12BIT, 0, 0);
+	input_set_abs_params(input, ABS_Y, 0, MAX_12BIT, 0, 0);
+
+	sx8654->client = client;
+	sx8654->input = input;
+
+	input_set_drvdata(sx8654->input, sx8654);
+
+	error = i2c_smbus_write_byte_data(client, I2C_REG_SOFTRESET,
+					  SOFTRESET_VALUE);
+	if (error) {
+		dev_err(&client->dev, "writing softreset value failed");
+		return error;
+	}
+
+	error = i2c_smbus_write_byte_data(client, I2C_REG_CHANMASK,
+					  CONV_X | CONV_Y);
+	if (error) {
+		dev_err(&client->dev, "writing to I2C_REG_CHANMASK failed");
+		return error;
+	}
+
+	error = i2c_smbus_write_byte_data(client, I2C_REG_IRQMASK,
+					  IRQ_PENTOUCH_TOUCHCONVDONE |
+						IRQ_PENRELEASE);
+	if (error) {
+		dev_err(&client->dev, "writing to I2C_REG_IRQMASK failed");
+		return error;
+	}
+
+	error = i2c_smbus_write_byte_data(client, I2C_REG_TOUCH1,
+					  CONDIRQ | FILT_7SA);
+	if (error) {
+		dev_err(&client->dev, "writing to I2C_REG_TOUCH1 failed");
+		return error;
+	}
+
+	error = devm_request_threaded_irq(&client->dev, client->irq,
+					  NULL, sx8654_irq,
+					  IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+					  client->name, sx8654);
+	if (error) {
+		dev_err(&client->dev,
+			"Failed to enable IRQ %d, error: %d\n",
+			client->irq, error);
+		return error;
+	}
+
+	/* Disable the IRQ, we'll enable it in sx8654_open() */
+	disable_irq(client->irq);
+
+	error = input_register_device(sx8654->input);
+	if (error)
+		return error;
+
+	i2c_set_clientdata(client, sx8654);
+	return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id sx8654_of_match[] = {
+	{ .compatible = "semtech,sx8654", },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, sx8654_of_match);
+#endif
+
+static const struct i2c_device_id sx8654_id_table[] = {
+	{ "semtech_sx8654", 0 },
+	{ },
+};
+MODULE_DEVICE_TABLE(i2c, sx8654_id_table);
+
+static struct i2c_driver sx8654_driver = {
+	.driver = {
+		.name = "sx8654",
+		.of_match_table = of_match_ptr(sx8654_of_match),
+	},
+	.id_table = sx8654_id_table,
+	.probe = sx8654_probe,
+};
+module_i2c_driver(sx8654_driver);
+
+MODULE_AUTHOR("Sébastien Szymanski <sebastien.szymanski@armadeus.com>");
+MODULE_DESCRIPTION("Semtech SX8654 I2C Touchscreen Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/touchscreen/tsc2007.c b/drivers/input/touchscreen/tsc2007.c
index 1bf9906b5a3f..ccc8aa615709 100644
--- a/drivers/input/touchscreen/tsc2007.c
+++ b/drivers/input/touchscreen/tsc2007.c
@@ -75,7 +75,7 @@ struct tsc2007 {
 	u16			model;
 	u16			x_plate_ohms;
 	u16			max_rt;
-	unsigned long		poll_period;
+	unsigned long		poll_period; /* in jiffies */
 	int			fuzzx;
 	int			fuzzy;
 	int			fuzzz;
@@ -214,8 +214,7 @@ static irqreturn_t tsc2007_soft_irq(int irq, void *handle)
 			dev_dbg(&ts->client->dev, "ignored pressure %d\n", rt);
 		}
 
-		wait_event_timeout(ts->wait, ts->stopped,
-				   msecs_to_jiffies(ts->poll_period));
+		wait_event_timeout(ts->wait, ts->stopped, ts->poll_period);
 	}
 
 	dev_dbg(&ts->client->dev, "UP\n");
@@ -314,9 +313,9 @@ static int tsc2007_probe_dt(struct i2c_client *client, struct tsc2007 *ts)
 		ts->fuzzz = val32;
 
 	if (!of_property_read_u64(np, "ti,poll-period", &val64))
-		ts->poll_period = val64;
+		ts->poll_period = msecs_to_jiffies(val64);
 	else
-		ts->poll_period = 1;
+		ts->poll_period = msecs_to_jiffies(1);
 
 	if (!of_property_read_u32(np, "ti,x-plate-ohms", &val32)) {
 		ts->x_plate_ohms = val32;
@@ -350,7 +349,7 @@ static int tsc2007_probe_pdev(struct i2c_client *client, struct tsc2007 *ts,
 	ts->model             = pdata->model;
 	ts->x_plate_ohms      = pdata->x_plate_ohms;
 	ts->max_rt            = pdata->max_rt ? : MAX_12BIT;
-	ts->poll_period       = pdata->poll_period ? : 1;
+	ts->poll_period       = msecs_to_jiffies(pdata->poll_period ? : 1);
 	ts->get_pendown_state = pdata->get_pendown_state;
 	ts->clear_penirq      = pdata->clear_penirq;
 	ts->fuzzx             = pdata->fuzzx;
diff --git a/drivers/input/touchscreen/usbtouchscreen.c b/drivers/input/touchscreen/usbtouchscreen.c
index a0966331a89b..f2c6c352c55a 100644
--- a/drivers/input/touchscreen/usbtouchscreen.c
+++ b/drivers/input/touchscreen/usbtouchscreen.c
@@ -132,6 +132,7 @@ enum {
 	DEVTYPE_GUNZE,
 	DEVTYPE_DMC_TSC10,
 	DEVTYPE_IRTOUCH,
+	DEVTYPE_IRTOUCH_HIRES,
 	DEVTYPE_IDEALTEK,
 	DEVTYPE_GENERAL_TOUCH,
 	DEVTYPE_GOTOP,
@@ -198,6 +199,7 @@ static const struct usb_device_id usbtouch_devices[] = {
 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
 	{USB_DEVICE(0x595a, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
 	{USB_DEVICE(0x6615, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
+	{USB_DEVICE(0x6615, 0x0012), .driver_info = DEVTYPE_IRTOUCH_HIRES},
 #endif
 
 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
@@ -1177,6 +1179,15 @@ static struct usbtouch_device_info usbtouch_dev_info[] = {
 		.rept_size	= 8,
 		.read_data	= irtouch_read_data,
 	},
+
+	[DEVTYPE_IRTOUCH_HIRES] = {
+		.min_xc		= 0x0,
+		.max_xc		= 0x7fff,
+		.min_yc		= 0x0,
+		.max_yc		= 0x7fff,
+		.rept_size	= 8,
+		.read_data	= irtouch_read_data,
+	},
 #endif
 
 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-10-07 15:21:05 +0000