Merge branch 'next' into for-linus

Prepare first round of input updates for 3.17.

12 files changed, 1442 insertions, 791 deletions

diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index e5987d393b44..6bb9a7dd23b6 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -471,6 +471,18 @@ config TOUCHSCREEN_HP7XX
 	  To compile this driver as a module, choose M here: the
 	  module will be called jornada720_ts.
 
+config TOUCHSCREEN_IPAQ_MICRO
+	tristate "HP iPAQ Atmel Micro ASIC touchscreen"
+	depends on MFD_IPAQ_MICRO
+	help
+	  Say Y here to enable support for the touchscreen attached to
+	  the Atmel Micro peripheral controller on iPAQ h3100/h3600/h3700
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ipaq-micro-ts.
+
 config TOUCHSCREEN_HTCPEN
 	tristate "HTC Shift X9500 touchscreen"
 	depends on ISA
@@ -555,18 +567,6 @@ config TOUCHSCREEN_TI_AM335X_TSC
 	  To compile this driver as a module, choose M here: the
 	  module will be called ti_am335x_tsc.
 
-config TOUCHSCREEN_ATMEL_TSADCC
-	tristate "Atmel Touchscreen Interface"
-	depends on ARCH_AT91
-	help
-	  Say Y here if you have a 4-wire touchscreen connected to the
-          ADC Controller on your Atmel SoC.
-
-	  If unsure, say N.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called atmel_tsadcc.
-
 config TOUCHSCREEN_UCB1400
 	tristate "Philips UCB1400 touchscreen"
 	depends on AC97_BUS
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index 4d479fb0a768..4be94fce41af 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -14,7 +14,6 @@ obj-$(CONFIG_TOUCHSCREEN_AD7879_I2C)	+= ad7879-i2c.o
 obj-$(CONFIG_TOUCHSCREEN_AD7879_SPI)	+= ad7879-spi.o
 obj-$(CONFIG_TOUCHSCREEN_ADS7846)	+= ads7846.o
 obj-$(CONFIG_TOUCHSCREEN_ATMEL_MXT)	+= atmel_mxt_ts.o
-obj-$(CONFIG_TOUCHSCREEN_ATMEL_TSADCC)	+= atmel_tsadcc.o
 obj-$(CONFIG_TOUCHSCREEN_AUO_PIXCIR)	+= auo-pixcir-ts.o
 obj-$(CONFIG_TOUCHSCREEN_BU21013)	+= bu21013_ts.o
 obj-$(CONFIG_TOUCHSCREEN_CY8CTMG110)	+= cy8ctmg110_ts.o
@@ -47,6 +46,7 @@ obj-$(CONFIG_TOUCHSCREEN_MTOUCH)	+= mtouch.o
 obj-$(CONFIG_TOUCHSCREEN_MK712)		+= mk712.o
 obj-$(CONFIG_TOUCHSCREEN_HP600)		+= hp680_ts_input.o
 obj-$(CONFIG_TOUCHSCREEN_HP7XX)		+= jornada720_ts.o
+obj-$(CONFIG_TOUCHSCREEN_IPAQ_MICRO)	+= ipaq-micro-ts.o
 obj-$(CONFIG_TOUCHSCREEN_HTCPEN)	+= htcpen.o
 obj-$(CONFIG_TOUCHSCREEN_USB_COMPOSITE)	+= usbtouchscreen.o
 obj-$(CONFIG_TOUCHSCREEN_PCAP)		+= pcap_ts.o
diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
index da201b8e37dc..e57ba52bf484 100644
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -1302,8 +1302,10 @@ static int ads7846_probe(struct spi_device *spi)
 	pdata = dev_get_platdata(&spi->dev);
 	if (!pdata) {
 		pdata = ads7846_probe_dt(&spi->dev);
-		if (IS_ERR(pdata))
-			return PTR_ERR(pdata);
+		if (IS_ERR(pdata)) {
+			err = PTR_ERR(pdata);
+			goto err_free_mem;
+		}
 	}
 
 	ts->model = pdata->model ? : 7846;
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index 6e0b4a2120d3..03b85711cb70 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -2,6 +2,7 @@
  * Atmel maXTouch Touchscreen driver
  *
  * Copyright (C) 2010 Samsung Electronics Co.Ltd
+ * Copyright (C) 2011-2014 Atmel Corporation
  * Copyright (C) 2012 Google, Inc.
  *
  * Author: Joonyoung Shim <jy0922.shim@samsung.com>
@@ -22,6 +23,7 @@
 #include <linux/i2c/atmel_mxt_ts.h>
 #include <linux/input/mt.h>
 #include <linux/interrupt.h>
+#include <linux/of.h>
 #include <linux/slab.h>
 
 /* Version */
@@ -29,8 +31,10 @@
 #define MXT_VER_21		21
 #define MXT_VER_22		22
 
-/* Firmware */
+/* 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
@@ -44,6 +48,8 @@
 #define MXT_OBJECT_START	0x07
 
 #define MXT_OBJECT_SIZE		6
+#define MXT_INFO_CHECKSUM_SIZE	3
+#define MXT_MAX_BLOCK_WRITE	256
 
 /* Object types */
 #define MXT_DEBUG_DIAGNOSTIC_T37	37
@@ -74,6 +80,9 @@
 #define MXT_SPT_MESSAGECOUNT_T44	44
 #define MXT_SPT_CTECONFIG_T46		46
 
+/* MXT_GEN_MESSAGE_T5 object */
+#define MXT_RPTID_NOMSG		0xff
+
 /* MXT_GEN_COMMAND_T6 field */
 #define MXT_COMMAND_RESET	0
 #define MXT_COMMAND_BACKUPNV	1
@@ -83,11 +92,20 @@
 
 /* Define for T6 status byte */
 #define MXT_T6_STATUS_RESET	(1 << 7)
+#define MXT_T6_STATUS_OFL	(1 << 6)
+#define MXT_T6_STATUS_SIGERR	(1 << 5)
+#define MXT_T6_STATUS_CAL	(1 << 4)
+#define MXT_T6_STATUS_CFGERR	(1 << 3)
+#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
+struct t7_config {
+	u8 idle;
+	u8 active;
+} __packed;
+
+#define MXT_POWER_CFG_RUN		0
+#define MXT_POWER_CFG_DEEPSLEEP		1
 
 /* MXT_GEN_ACQUIRE_T8 field */
 #define MXT_ACQUIRE_CHRGTIME	0
@@ -99,7 +117,6 @@
 #define MXT_ACQUIRE_ATCHCALSTHR	7
 
 /* MXT_TOUCH_MULTI_T9 field */
-#define MXT_TOUCH_CTRL		0
 #define MXT_T9_ORIENT		9
 #define MXT_T9_RANGE		18
 
@@ -217,11 +234,6 @@ struct mxt_object {
 	u8 num_report_ids;
 } __packed;
 
-struct mxt_message {
-	u8 reportid;
-	u8 message[7];
-};
-
 /* Each client has this additional data */
 struct mxt_data {
 	struct i2c_client *client;
@@ -234,15 +246,28 @@ struct mxt_data {
 	unsigned int max_x;
 	unsigned int max_y;
 	bool in_bootloader;
+	u16 mem_size;
+	u8 max_reportid;
 	u32 config_crc;
+	u32 info_crc;
 	u8 bootloader_addr;
+	u8 *msg_buf;
+	u8 t6_status;
+	bool update_input;
+	u8 last_message_count;
+	u8 num_touchids;
+	struct t7_config t7_cfg;
 
 	/* Cached parameters from object table */
+	u16 T5_address;
+	u8 T5_msg_size;
 	u8 T6_reportid;
 	u16 T6_address;
+	u16 T7_address;
 	u8 T9_reportid_min;
 	u8 T9_reportid_max;
 	u8 T19_reportid;
+	u16 T44_address;
 
 	/* for fw update in bootloader */
 	struct completion bl_completion;
@@ -297,42 +322,10 @@ static bool mxt_object_readable(unsigned int type)
 	}
 }
 
-static bool mxt_object_writable(unsigned int type)
-{
-	switch (type) {
-	case MXT_GEN_COMMAND_T6:
-	case MXT_GEN_POWER_T7:
-	case MXT_GEN_ACQUIRE_T8:
-	case MXT_TOUCH_MULTI_T9:
-	case MXT_TOUCH_KEYARRAY_T15:
-	case MXT_TOUCH_PROXIMITY_T23:
-	case MXT_TOUCH_PROXKEY_T52:
-	case MXT_PROCI_GRIPFACE_T20:
-	case MXT_PROCG_NOISE_T22:
-	case MXT_PROCI_ONETOUCH_T24:
-	case MXT_PROCI_TWOTOUCH_T27:
-	case MXT_PROCI_GRIP_T40:
-	case MXT_PROCI_PALM_T41:
-	case MXT_PROCI_TOUCHSUPPRESSION_T42:
-	case MXT_PROCI_STYLUS_T47:
-	case MXT_PROCG_NOISESUPPRESSION_T48:
-	case MXT_SPT_COMMSCONFIG_T18:
-	case MXT_SPT_GPIOPWM_T19:
-	case MXT_SPT_SELFTEST_T25:
-	case MXT_SPT_CTECONFIG_T28:
-	case MXT_SPT_DIGITIZER_T43:
-	case MXT_SPT_CTECONFIG_T46:
-		return true;
-	default:
-		return false;
-	}
-}
-
-static void mxt_dump_message(struct device *dev,
-			     struct mxt_message *message)
+static void mxt_dump_message(struct mxt_data *data, u8 *message)
 {
-	dev_dbg(dev, "reportid: %u\tmessage: %*ph\n",
-		message->reportid, 7, message->message);
+	dev_dbg(&data->client->dev, "message: %*ph\n",
+		data->T5_msg_size, message);
 }
 
 static int mxt_wait_for_completion(struct mxt_data *data,
@@ -401,7 +394,7 @@ static int mxt_bootloader_write(struct mxt_data *data,
 	return ret;
 }
 
-static int mxt_lookup_bootloader_address(struct mxt_data *data)
+static int mxt_lookup_bootloader_address(struct mxt_data *data, bool retry)
 {
 	u8 appmode = data->client->addr;
 	u8 bootloader;
@@ -409,6 +402,12 @@ static int mxt_lookup_bootloader_address(struct mxt_data *data)
 	switch (appmode) {
 	case 0x4a:
 	case 0x4b:
+		/* Chips after 1664S use different scheme */
+		if (retry || data->info.family_id >= 0xa2) {
+			bootloader = appmode - 0x24;
+			break;
+		}
+		/* Fall through for normal case */
 	case 0x4c:
 	case 0x4d:
 	case 0x5a:
@@ -426,6 +425,30 @@ static int mxt_lookup_bootloader_address(struct mxt_data *data)
 	return 0;
 }
 
+static int mxt_probe_bootloader(struct mxt_data *data, bool retry)
+{
+	struct device *dev = &data->client->dev;
+	int ret;
+	u8 val;
+	bool crc_failure;
+
+	ret = mxt_lookup_bootloader_address(data, retry);
+	if (ret)
+		return ret;
+
+	ret = mxt_bootloader_read(data, &val, 1);
+	if (ret)
+		return ret;
+
+	/* Check app crc fail mode */
+	crc_failure = (val & ~MXT_BOOT_STATUS_MASK) == MXT_APP_CRC_FAIL;
+
+	dev_err(dev, "Detected bootloader, status:%02X%s\n",
+			val, crc_failure ? ", APP_CRC_FAIL" : "");
+
+	return 0;
+}
+
 static u8 mxt_get_bootloader_version(struct mxt_data *data, u8 val)
 {
 	struct device *dev = &data->client->dev;
@@ -447,14 +470,15 @@ static u8 mxt_get_bootloader_version(struct mxt_data *data, u8 val)
 	}
 }
 
-static int mxt_check_bootloader(struct mxt_data *data, unsigned int state)
+static int mxt_check_bootloader(struct mxt_data *data, unsigned int state,
+				bool wait)
 {
 	struct device *dev = &data->client->dev;
 	u8 val;
 	int ret;
 
 recheck:
-	if (state != MXT_WAITING_BOOTLOAD_CMD) {
+	if (wait) {
 		/*
 		 * In application update mode, the interrupt
 		 * line signals state transitions. We must wait for the
@@ -485,6 +509,7 @@ recheck:
 	switch (state) {
 	case MXT_WAITING_BOOTLOAD_CMD:
 	case MXT_WAITING_FRAME_DATA:
+	case MXT_APP_CRC_FAIL:
 		val &= ~MXT_BOOT_STATUS_MASK;
 		break;
 	case MXT_FRAME_CRC_PASS:
@@ -508,13 +533,18 @@ recheck:
 	return 0;
 }
 
-static int mxt_unlock_bootloader(struct mxt_data *data)
+static int mxt_send_bootloader_cmd(struct mxt_data *data, bool unlock)
 {
 	int ret;
 	u8 buf[2];
 
-	buf[0] = MXT_UNLOCK_CMD_LSB;
-	buf[1] = MXT_UNLOCK_CMD_MSB;
+	if (unlock) {
+		buf[0] = MXT_UNLOCK_CMD_LSB;
+		buf[1] = MXT_UNLOCK_CMD_MSB;
+	} else {
+		buf[0] = 0x01;
+		buf[1] = 0x01;
+	}
 
 	ret = mxt_bootloader_write(data, buf, 2);
 	if (ret)
@@ -605,40 +635,44 @@ mxt_get_object(struct mxt_data *data, u8 type)
 			return object;
 	}
 
-	dev_err(&data->client->dev, "Invalid object type T%u\n", type);
+	dev_warn(&data->client->dev, "Invalid object type T%u\n", type);
 	return NULL;
 }
 
-static int mxt_read_message(struct mxt_data *data,
-				 struct mxt_message *message)
+static void mxt_proc_t6_messages(struct mxt_data *data, u8 *msg)
 {
-	struct mxt_object *object;
-	u16 reg;
-
-	object = mxt_get_object(data, MXT_GEN_MESSAGE_T5);
-	if (!object)
-		return -EINVAL;
-
-	reg = object->start_address;
-	return __mxt_read_reg(data->client, reg,
-			sizeof(struct mxt_message), message);
-}
+	struct device *dev = &data->client->dev;
+	u8 status = msg[1];
+	u32 crc = msg[2] | (msg[3] << 8) | (msg[4] << 16);
 
-static int mxt_write_object(struct mxt_data *data,
-				 u8 type, u8 offset, u8 val)
-{
-	struct mxt_object *object;
-	u16 reg;
+	complete(&data->crc_completion);
 
-	object = mxt_get_object(data, type);
-	if (!object || offset >= mxt_obj_size(object))
-		return -EINVAL;
+	if (crc != data->config_crc) {
+		data->config_crc = crc;
+		dev_dbg(dev, "T6 Config Checksum: 0x%06X\n", crc);
+	}
 
-	reg = object->start_address;
-	return mxt_write_reg(data->client, reg + offset, val);
+	/* Detect reset */
+	if (status & MXT_T6_STATUS_RESET)
+		complete(&data->reset_completion);
+
+	/* Output debug if status has changed */
+	if (status != data->t6_status)
+		dev_dbg(dev, "T6 Status 0x%02X%s%s%s%s%s%s%s\n",
+			status,
+			status == 0 ? " OK" : "",
+			status & MXT_T6_STATUS_RESET ? " RESET" : "",
+			status & MXT_T6_STATUS_OFL ? " OFL" : "",
+			status & MXT_T6_STATUS_SIGERR ? " SIGERR" : "",
+			status & MXT_T6_STATUS_CAL ? " CAL" : "",
+			status & MXT_T6_STATUS_CFGERR ? " CFGERR" : "",
+			status & MXT_T6_STATUS_COMSERR ? " COMSERR" : "");
+
+	/* Save current status */
+	data->t6_status = status;
 }
 
-static void mxt_input_button(struct mxt_data *data, struct mxt_message *message)
+static void mxt_input_button(struct mxt_data *data, u8 *message)
 {
 	struct input_dev *input = data->input_dev;
 	const struct mxt_platform_data *pdata = data->pdata;
@@ -649,30 +683,33 @@ static void mxt_input_button(struct mxt_data *data, struct mxt_message *message)
 	for (i = 0; i < pdata->t19_num_keys; i++) {
 		if (pdata->t19_keymap[i] == KEY_RESERVED)
 			continue;
-		button = !(message->message[0] & (1 << i));
+		button = !(message[1] & (1 << i));
 		input_report_key(input, pdata->t19_keymap[i], button);
 	}
 }
 
-static void mxt_input_sync(struct input_dev *input_dev)
+static void mxt_input_sync(struct mxt_data *data)
 {
-	input_mt_report_pointer_emulation(input_dev, false);
-	input_sync(input_dev);
+	input_mt_report_pointer_emulation(data->input_dev,
+					  data->pdata->t19_num_keys);
+	input_sync(data->input_dev);
 }
 
-static void mxt_input_touchevent(struct mxt_data *data,
-				      struct mxt_message *message, int id)
+static void mxt_proc_t9_message(struct mxt_data *data, u8 *message)
 {
 	struct device *dev = &data->client->dev;
-	u8 status = message->message[0];
 	struct input_dev *input_dev = data->input_dev;
+	int id;
+	u8 status;
 	int x;
 	int y;
 	int area;
 	int amplitude;
 
-	x = (message->message[1] << 4) | ((message->message[3] >> 4) & 0xf);
-	y = (message->message[2] << 4) | ((message->message[3] & 0xf));
+	id = message[0] - data->T9_reportid_min;
+	status = message[1];
+	x = (message[2] << 4) | ((message[4] >> 4) & 0xf);
+	y = (message[3] << 4) | ((message[4] & 0xf));
 
 	/* Handle 10/12 bit switching */
 	if (data->max_x < 1024)
@@ -680,8 +717,8 @@ static void mxt_input_touchevent(struct mxt_data *data,
 	if (data->max_y < 1024)
 		y >>= 2;
 
-	area = message->message[4];
-	amplitude = message->message[5];
+	area = message[5];
+	amplitude = message[6];
 
 	dev_dbg(dev,
 		"[%u] %c%c%c%c%c%c%c%c x: %5u y: %5u area: %3u amp: %3u\n",
@@ -707,7 +744,7 @@ static void mxt_input_touchevent(struct mxt_data *data,
 		if (status & MXT_T9_RELEASE) {
 			input_mt_report_slot_state(input_dev,
 						   MT_TOOL_FINGER, 0);
-			mxt_input_sync(input_dev);
+			mxt_input_sync(data);
 		}
 
 		/* Touch active */
@@ -720,64 +757,179 @@ static void mxt_input_touchevent(struct mxt_data *data,
 		/* Touch no longer active, close out slot */
 		input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 0);
 	}
+
+	data->update_input = true;
+}
+
+static int mxt_proc_message(struct mxt_data *data, u8 *message)
+{
+	u8 report_id = message[0];
+
+	if (report_id == MXT_RPTID_NOMSG)
+		return 0;
+
+	if (report_id == data->T6_reportid) {
+		mxt_proc_t6_messages(data, message);
+	} else if (!data->input_dev) {
+		/*
+		 * Do not report events if input device
+		 * is not yet registered.
+		 */
+		mxt_dump_message(data, message);
+	} 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->T19_reportid) {
+		mxt_input_button(data, message);
+		data->update_input = true;
+	} else {
+		mxt_dump_message(data, message);
+	}
+
+	return 1;
 }
 
-static u16 mxt_extract_T6_csum(const u8 *csum)
+static int mxt_read_and_process_messages(struct mxt_data *data, u8 count)
 {
-	return csum[0] | (csum[1] << 8) | (csum[2] << 16);
+	struct device *dev = &data->client->dev;
+	int ret;
+	int i;
+	u8 num_valid = 0;
+
+	/* Safety check for msg_buf */
+	if (count > data->max_reportid)
+		return -EINVAL;
+
+	/* Process remaining messages if necessary */
+	ret = __mxt_read_reg(data->client, data->T5_address,
+				data->T5_msg_size * count, data->msg_buf);
+	if (ret) {
+		dev_err(dev, "Failed to read %u messages (%d)\n", count, ret);
+		return ret;
+	}
+
+	for (i = 0;  i < count; i++) {
+		ret = mxt_proc_message(data,
+			data->msg_buf + data->T5_msg_size * i);
+
+		if (ret == 1)
+			num_valid++;
+	}
+
+	/* return number of messages read */
+	return num_valid;
 }
 
-static bool mxt_is_T9_message(struct mxt_data *data, struct mxt_message *msg)
+static irqreturn_t mxt_process_messages_t44(struct mxt_data *data)
 {
-	u8 id = msg->reportid;
-	return (id >= data->T9_reportid_min && id <= data->T9_reportid_max);
+	struct device *dev = &data->client->dev;
+	int ret;
+	u8 count, num_left;
+
+	/* Read T44 and T5 together */
+	ret = __mxt_read_reg(data->client, data->T44_address,
+		data->T5_msg_size + 1, data->msg_buf);
+	if (ret) {
+		dev_err(dev, "Failed to read T44 and T5 (%d)\n", ret);
+		return IRQ_NONE;
+	}
+
+	count = data->msg_buf[0];
+
+	if (count == 0) {
+		dev_warn(dev, "Interrupt triggered but zero messages\n");
+		return IRQ_NONE;
+	} else if (count > data->max_reportid) {
+		dev_err(dev, "T44 count %d exceeded max report id\n", count);
+		count = data->max_reportid;
+	}
+
+	/* Process first message */
+	ret = mxt_proc_message(data, data->msg_buf + 1);
+	if (ret < 0) {
+		dev_warn(dev, "Unexpected invalid message\n");
+		return IRQ_NONE;
+	}
+
+	num_left = count - 1;
+
+	/* Process remaining messages if necessary */
+	if (num_left) {
+		ret = mxt_read_and_process_messages(data, num_left);
+		if (ret < 0)
+			goto end;
+		else if (ret != num_left)
+			dev_warn(dev, "Unexpected invalid message\n");
+	}
+
+end:
+	if (data->update_input) {
+		mxt_input_sync(data);
+		data->update_input = false;
+	}
+
+	return IRQ_HANDLED;
 }
 
-static irqreturn_t mxt_process_messages_until_invalid(struct mxt_data *data)
+static int mxt_process_messages_until_invalid(struct mxt_data *data)
 {
-	struct mxt_message message;
-	const u8 *payload = &message.message[0];
 	struct device *dev = &data->client->dev;
-	u8 reportid;
-	bool update_input = false;
-	u32 crc;
+	int count, read;
+	u8 tries = 2;
 
+	count = data->max_reportid;
+
+	/* Read messages until we force an invalid */
 	do {
-		if (mxt_read_message(data, &message)) {
-			dev_err(dev, "Failed to read message\n");
-			return IRQ_NONE;
-		}
+		read = mxt_read_and_process_messages(data, count);
+		if (read < count)
+			return 0;
+	} while (--tries);
 
-		reportid = message.reportid;
+	if (data->update_input) {
+		mxt_input_sync(data);
+		data->update_input = false;
+	}
 
-		if (reportid == data->T6_reportid) {
-			u8 status = payload[0];
+	dev_err(dev, "CHG pin isn't cleared\n");
+	return -EBUSY;
+}
 
-			crc = mxt_extract_T6_csum(&payload[1]);
-			if (crc != data->config_crc) {
-				data->config_crc = crc;
-				complete(&data->crc_completion);
-			}
+static irqreturn_t mxt_process_messages(struct mxt_data *data)
+{
+	int total_handled, num_handled;
+	u8 count = data->last_message_count;
 
-			dev_dbg(dev, "Status: %02x Config Checksum: %06x\n",
-				status, data->config_crc);
-
-			if (status & MXT_T6_STATUS_RESET)
-				complete(&data->reset_completion);
-		} else if (mxt_is_T9_message(data, &message)) {
-			int id = reportid - data->T9_reportid_min;
-			mxt_input_touchevent(data, &message, id);
-			update_input = true;
-		} else if (message.reportid == data->T19_reportid) {
-			mxt_input_button(data, &message);
-			update_input = true;
-		} else {
-			mxt_dump_message(dev, &message);
-		}
-	} while (reportid != 0xff);
+	if (count < 1 || count > data->max_reportid)
+		count = 1;
 
-	if (update_input)
-		mxt_input_sync(data->input_dev);
+	/* include final invalid message */
+	total_handled = mxt_read_and_process_messages(data, count + 1);
+	if (total_handled < 0)
+		return IRQ_NONE;
+	/* if there were invalid messages, then we are done */
+	else if (total_handled <= count)
+		goto update_count;
+
+	/* keep reading two msgs until one is invalid or reportid limit */
+	do {
+		num_handled = mxt_read_and_process_messages(data, 2);
+		if (num_handled < 0)
+			return IRQ_NONE;
+
+		total_handled += num_handled;
+
+		if (num_handled < 2)
+			break;
+	} while (total_handled < data->num_touchids);
+
+update_count:
+	data->last_message_count = total_handled;
+
+	if (data->update_input) {
+		mxt_input_sync(data);
+		data->update_input = false;
+	}
 
 	return IRQ_HANDLED;
 }
@@ -792,7 +944,14 @@ static irqreturn_t mxt_interrupt(int irq, void *dev_id)
 		return IRQ_HANDLED;
 	}
 
-	return mxt_process_messages_until_invalid(data);
+	if (!data->object_table)
+		return IRQ_HANDLED;
+
+	if (data->T44_address) {
+		return mxt_process_messages_t44(data);
+	} else {
+		return mxt_process_messages(data);
+	}
 }
 
 static int mxt_t6_command(struct mxt_data *data, u16 cmd_offset,
@@ -866,78 +1025,314 @@ static void mxt_update_crc(struct mxt_data *data, u8 cmd, u8 value)
 	mxt_wait_for_completion(data, &data->crc_completion, MXT_CRC_TIMEOUT);
 }
 
-static int mxt_check_reg_init(struct mxt_data *data)
+static void mxt_calc_crc24(u32 *crc, u8 firstbyte, u8 secondbyte)
+{
+	static const unsigned int crcpoly = 0x80001B;
+	u32 result;
+	u32 data_word;
+
+	data_word = (secondbyte << 8) | firstbyte;
+	result = ((*crc << 1) ^ data_word);
+
+	if (result & 0x1000000)
+		result ^= crcpoly;
+
+	*crc = result;
+}
+
+static u32 mxt_calculate_crc(u8 *base, off_t start_off, off_t end_off)
+{
+	u32 crc = 0;
+	u8 *ptr = base + start_off;
+	u8 *last_val = base + end_off - 1;
+
+	if (end_off < start_off)
+		return -EINVAL;
+
+	while (ptr < last_val) {
+		mxt_calc_crc24(&crc, *ptr, *(ptr + 1));
+		ptr += 2;
+	}
+
+	/* if len is odd, fill the last byte with 0 */
+	if (ptr == last_val)
+		mxt_calc_crc24(&crc, *ptr, 0);
+
+	/* Mask to 24-bit */
+	crc &= 0x00FFFFFF;
+
+	return crc;
+}
+
+/*
+ * mxt_update_cfg - download configuration to chip
+ *
+ * Atmel Raw Config File Format
+ *
+ * The first four lines of the raw config file contain:
+ *  1) Version
+ *  2) Chip ID Information (first 7 bytes of device memory)
+ *  3) Chip Information Block 24-bit CRC Checksum
+ *  4) Chip Configuration 24-bit CRC Checksum
+ *
+ * The rest of the file consists of one line per object instance:
+ *   <TYPE> <INSTANCE> <SIZE> <CONTENTS>
+ *
+ *   <TYPE> - 2-byte object type as hex
+ *   <INSTANCE> - 2-byte object instance number as hex
+ *   <SIZE> - 2-byte object size as hex
+ *   <CONTENTS> - array of <SIZE> 1-byte hex values
+ */
+static int mxt_update_cfg(struct mxt_data *data, const struct firmware *cfg)
 {
-	const struct mxt_platform_data *pdata = data->pdata;
-	struct mxt_object *object;
 	struct device *dev = &data->client->dev;
-	int index = 0;
-	int i, size;
+	struct mxt_info cfg_info;
+	struct mxt_object *object;
 	int ret;
+	int offset;
+	int data_pos;
+	int byte_offset;
+	int i;
+	int cfg_start_ofs;
+	u32 info_crc, config_crc, calculated_crc;
+	u8 *config_mem;
+	size_t config_mem_size;
+	unsigned int type, instance, size;
+	u8 val;
+	u16 reg;
 
-	if (!pdata->config) {
-		dev_dbg(dev, "No cfg data defined, skipping reg init\n");
-		return 0;
+	mxt_update_crc(data, MXT_COMMAND_REPORTALL, 1);
+
+	if (strncmp(cfg->data, MXT_CFG_MAGIC, strlen(MXT_CFG_MAGIC))) {
+		dev_err(dev, "Unrecognised config file\n");
+		ret = -EINVAL;
+		goto release;
 	}
 
-	mxt_update_crc(data, MXT_COMMAND_REPORTALL, 1);
+	data_pos = strlen(MXT_CFG_MAGIC);
+
+	/* Load information block and check */
+	for (i = 0; i < sizeof(struct mxt_info); i++) {
+		ret = sscanf(cfg->data + data_pos, "%hhx%n",
+			     (unsigned char *)&cfg_info + i,
+			     &offset);
+		if (ret != 1) {
+			dev_err(dev, "Bad format\n");
+			ret = -EINVAL;
+			goto release;
+		}
 
-	if (data->config_crc == pdata->config_crc) {
-		dev_info(dev, "Config CRC 0x%06X: OK\n", data->config_crc);
-		return 0;
+		data_pos += offset;
 	}
 
-	dev_info(dev, "Config CRC 0x%06X: does not match 0x%06X\n",
-		 data->config_crc, pdata->config_crc);
+	if (cfg_info.family_id != data->info.family_id) {
+		dev_err(dev, "Family ID mismatch!\n");
+		ret = -EINVAL;
+		goto release;
+	}
 
-	for (i = 0; i < data->info.object_num; i++) {
-		object = data->object_table + i;
+	if (cfg_info.variant_id != data->info.variant_id) {
+		dev_err(dev, "Variant ID mismatch!\n");
+		ret = -EINVAL;
+		goto release;
+	}
+
+	/* Read CRCs */
+	ret = sscanf(cfg->data + data_pos, "%x%n", &info_crc, &offset);
+	if (ret != 1) {
+		dev_err(dev, "Bad format: failed to parse Info CRC\n");
+		ret = -EINVAL;
+		goto release;
+	}
+	data_pos += offset;
 
-		if (!mxt_object_writable(object->type))
+	ret = sscanf(cfg->data + data_pos, "%x%n", &config_crc, &offset);
+	if (ret != 1) {
+		dev_err(dev, "Bad format: failed to parse Config CRC\n");
+		ret = -EINVAL;
+		goto release;
+	}
+	data_pos += offset;
+
+	/*
+	 * The Info Block CRC is calculated over mxt_info and the object
+	 * table. If it does not match then we are trying to load the
+	 * configuration from a different chip or firmware version, so
+	 * the configuration CRC is invalid anyway.
+	 */
+	if (info_crc == data->info_crc) {
+		if (config_crc == 0 || data->config_crc == 0) {
+			dev_info(dev, "CRC zero, attempting to apply config\n");
+		} else if (config_crc == data->config_crc) {
+			dev_dbg(dev, "Config CRC 0x%06X: OK\n",
+				 data->config_crc);
+			ret = 0;
+			goto release;
+		} else {
+			dev_info(dev, "Config CRC 0x%06X: does not match file 0x%06X\n",
+				 data->config_crc, config_crc);
+		}
+	} else {
+		dev_warn(dev,
+			 "Warning: Info CRC error - device=0x%06X file=0x%06X\n",
+			 data->info_crc, info_crc);
+	}
+
+	/* Malloc memory to store configuration */
+	cfg_start_ofs = MXT_OBJECT_START +
+			data->info.object_num * sizeof(struct mxt_object) +
+			MXT_INFO_CHECKSUM_SIZE;
+	config_mem_size = data->mem_size - cfg_start_ofs;
+	config_mem = kzalloc(config_mem_size, GFP_KERNEL);
+	if (!config_mem) {
+		dev_err(dev, "Failed to allocate memory\n");
+		ret = -ENOMEM;
+		goto release;
+	}
+
+	while (data_pos < cfg->size) {
+		/* Read type, instance, length */
+		ret = sscanf(cfg->data + data_pos, "%x %x %x%n",
+			     &type, &instance, &size, &offset);
+		if (ret == 0) {
+			/* EOF */
+			break;
+		} else if (ret != 3) {
+			dev_err(dev, "Bad format: failed to parse object\n");
+			ret = -EINVAL;
+			goto release_mem;
+		}
+		data_pos += offset;
+
+		object = mxt_get_object(data, type);
+		if (!object) {
+			/* Skip object */
+			for (i = 0; i < size; i++) {
+				ret = sscanf(cfg->data + data_pos, "%hhx%n",
+					     &val,
+					     &offset);
+				data_pos += offset;
+			}
 			continue;
+		}
 
-		size = mxt_obj_size(object) * mxt_obj_instances(object);
-		if (index + size > pdata->config_length) {
-			dev_err(dev, "Not enough config data!\n");
-			return -EINVAL;
+		if (size > mxt_obj_size(object)) {
+			/*
+			 * Either we are in fallback mode due to wrong
+			 * config or config from a later fw version,
+			 * or the file is corrupt or hand-edited.
+			 */
+			dev_warn(dev, "Discarding %zu byte(s) in T%u\n",
+				 size - mxt_obj_size(object), type);
+		} else if (mxt_obj_size(object) > size) {
+			/*
+			 * If firmware is upgraded, new bytes may be added to
+			 * end of objects. It is generally forward compatible
+			 * to zero these bytes - previous behaviour will be
+			 * retained. However this does invalidate the CRC and
+			 * will force fallback mode until the configuration is
+			 * updated. We warn here but do nothing else - the
+			 * malloc has zeroed the entire configuration.
+			 */
+			dev_warn(dev, "Zeroing %zu byte(s) in T%d\n",
+				 mxt_obj_size(object) - size, type);
 		}
 
-		ret = __mxt_write_reg(data->client, object->start_address,
-				size, &pdata->config[index]);
-		if (ret)
-			return ret;
-		index += size;
+		if (instance >= mxt_obj_instances(object)) {
+			dev_err(dev, "Object instances exceeded!\n");
+			ret = -EINVAL;
+			goto release_mem;
+		}
+
+		reg = object->start_address + mxt_obj_size(object) * instance;
+
+		for (i = 0; i < size; i++) {
+			ret = sscanf(cfg->data + data_pos, "%hhx%n",
+				     &val,
+				     &offset);
+			if (ret != 1) {
+				dev_err(dev, "Bad format in T%d\n", type);
+				ret = -EINVAL;
+				goto release_mem;
+			}
+			data_pos += offset;
+
+			if (i > mxt_obj_size(object))
+				continue;
+
+			byte_offset = reg + i - cfg_start_ofs;
+
+			if ((byte_offset >= 0)
+			    && (byte_offset <= config_mem_size)) {
+				*(config_mem + byte_offset) = val;
+			} else {
+				dev_err(dev, "Bad object: reg:%d, T%d, ofs=%d\n",
+					reg, object->type, byte_offset);
+				ret = -EINVAL;
+				goto release_mem;
+			}
+		}
+	}
+
+	/* Calculate crc of the received configs (not the raw config file) */
+	if (data->T7_address < cfg_start_ofs) {
+		dev_err(dev, "Bad T7 address, T7addr = %x, config offset %x\n",
+			data->T7_address, cfg_start_ofs);
+		ret = 0;
+		goto release_mem;
+	}
+
+	calculated_crc = mxt_calculate_crc(config_mem,
+					   data->T7_address - cfg_start_ofs,
+					   config_mem_size);
+
+	if (config_crc > 0 && (config_crc != calculated_crc))
+		dev_warn(dev, "Config CRC error, calculated=%06X, file=%06X\n",
+			 calculated_crc, config_crc);
+
+	/* Write configuration as blocks */
+	byte_offset = 0;
+	while (byte_offset < config_mem_size) {
+		size = config_mem_size - byte_offset;
+
+		if (size > MXT_MAX_BLOCK_WRITE)
+			size = MXT_MAX_BLOCK_WRITE;
+
+		ret = __mxt_write_reg(data->client,
+				      cfg_start_ofs + byte_offset,
+				      size, config_mem + byte_offset);
+		if (ret != 0) {
+			dev_err(dev, "Config write error, ret=%d\n", ret);
+			goto release_mem;
+		}
+
+		byte_offset += size;
 	}
 
 	mxt_update_crc(data, MXT_COMMAND_BACKUPNV, MXT_BACKUP_VALUE);
 
 	ret = mxt_soft_reset(data);
 	if (ret)
-		return ret;
+		goto release_mem;
 
 	dev_info(dev, "Config successfully updated\n");
 
-	return 0;
+release_mem:
+	kfree(config_mem);
+release:
+	release_firmware(cfg);
+	return ret;
 }
 
-static int mxt_make_highchg(struct mxt_data *data)
+static int mxt_acquire_irq(struct mxt_data *data)
 {
-	struct device *dev = &data->client->dev;
-	struct mxt_message message;
-	int count = 10;
 	int error;
 
-	/* Read dummy message to make high CHG pin */
-	do {
-		error = mxt_read_message(data, &message);
-		if (error)
-			return error;
-	} while (message.reportid != 0xff && --count);
+	enable_irq(data->irq);
 
-	if (!count) {
-		dev_err(dev, "CHG pin isn't cleared\n");
-		return -EBUSY;
-	}
+	error = mxt_process_messages_until_invalid(data);
+	if (error)
+		return error;
 
 	return 0;
 }
@@ -956,24 +1351,55 @@ static int mxt_get_info(struct mxt_data *data)
 	return 0;
 }
 
+static void mxt_free_object_table(struct mxt_data *data)
+{
+	input_unregister_device(data->input_dev);
+	data->input_dev = NULL;
+
+	kfree(data->object_table);
+	data->object_table = NULL;
+	kfree(data->msg_buf);
+	data->msg_buf = NULL;
+	data->T5_address = 0;
+	data->T5_msg_size = 0;
+	data->T6_reportid = 0;
+	data->T7_address = 0;
+	data->T9_reportid_min = 0;
+	data->T9_reportid_max = 0;
+	data->T19_reportid = 0;
+	data->T44_address = 0;
+	data->max_reportid = 0;
+}
+
 static int mxt_get_object_table(struct mxt_data *data)
 {
 	struct i2c_client *client = data->client;
 	size_t table_size;
+	struct mxt_object *object_table;
 	int error;
 	int i;
 	u8 reportid;
+	u16 end_address;
 
 	table_size = data->info.object_num * sizeof(struct mxt_object);
+	object_table = kzalloc(table_size, GFP_KERNEL);
+	if (!object_table) {
+		dev_err(&data->client->dev, "Failed to allocate memory\n");
+		return -ENOMEM;
+	}
+
 	error = __mxt_read_reg(client, MXT_OBJECT_START, table_size,
-			data->object_table);
-	if (error)
+			object_table);
+	if (error) {
+		kfree(object_table);
 		return error;
+	}
 
 	/* Valid Report IDs start counting from 1 */
 	reportid = 1;
+	data->mem_size = 0;
 	for (i = 0; i < data->info.object_num; i++) {
-		struct mxt_object *object = data->object_table + i;
+		struct mxt_object *object = object_table + i;
 		u8 min_id, max_id;
 
 		le16_to_cpus(&object->start_address);
@@ -995,31 +1421,71 @@ static int mxt_get_object_table(struct mxt_data *data)
 			min_id, max_id);
 
 		switch (object->type) {
+		case MXT_GEN_MESSAGE_T5:
+			if (data->info.family_id == 0x80) {
+				/*
+				 * On mXT224 read and discard unused CRC byte
+				 * otherwise DMA reads are misaligned
+				 */
+				data->T5_msg_size = mxt_obj_size(object);
+			} else {
+				/* CRC not enabled, so skip last byte */
+				data->T5_msg_size = mxt_obj_size(object) - 1;
+			}
+			data->T5_address = object->start_address;
 		case MXT_GEN_COMMAND_T6:
 			data->T6_reportid = min_id;
 			data->T6_address = object->start_address;
 			break;
+		case MXT_GEN_POWER_T7:
+			data->T7_address = object->start_address;
+			break;
 		case MXT_TOUCH_MULTI_T9:
 			data->T9_reportid_min = min_id;
 			data->T9_reportid_max = max_id;
+			data->num_touchids = object->num_report_ids
+						* mxt_obj_instances(object);
+			break;
+		case MXT_SPT_MESSAGECOUNT_T44:
+			data->T44_address = object->start_address;
 			break;
 		case MXT_SPT_GPIOPWM_T19:
 			data->T19_reportid = min_id;
 			break;
 		}
+
+		end_address = object->start_address
+			+ mxt_obj_size(object) * mxt_obj_instances(object) - 1;
+
+		if (end_address >= data->mem_size)
+			data->mem_size = end_address + 1;
+	}
+
+	/* Store maximum reportid */
+	data->max_reportid = reportid;
+
+	/* If T44 exists, T5 position has to be directly after */
+	if (data->T44_address && (data->T5_address != data->T44_address + 1)) {
+		dev_err(&client->dev, "Invalid T44 position\n");
+		error = -EINVAL;
+		goto free_object_table;
+	}
+
+	data->msg_buf = kcalloc(data->max_reportid,
+				data->T5_msg_size, GFP_KERNEL);
+	if (!data->msg_buf) {
+		dev_err(&client->dev, "Failed to allocate message buffer\n");
+		error = -ENOMEM;
+		goto free_object_table;
 	}
 
+	data->object_table = object_table;
+
 	return 0;
-}
 
-static void mxt_free_object_table(struct mxt_data *data)
-{
-	kfree(data->object_table);
-	data->object_table = NULL;
-	data->T6_reportid = 0;
-	data->T9_reportid_min = 0;
-	data->T9_reportid_max = 0;
-	data->T19_reportid = 0;
+free_object_table:
+	mxt_free_object_table(data);
+	return error;
 }
 
 static int mxt_read_t9_resolution(struct mxt_data *data)
@@ -1070,55 +1536,255 @@ static int mxt_read_t9_resolution(struct mxt_data *data)
 	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)
+{
+	struct device *dev = &data->client->dev;
+	const struct mxt_platform_data *pdata = data->pdata;
+	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");
+
+	input_dev = input_allocate_device();
+	if (!input_dev) {
+		dev_err(dev, "Failed to allocate memory\n");
+		return -ENOMEM;
+	}
+
+	input_dev->name = "Atmel maXTouch Touchscreen";
+	input_dev->phys = data->phys;
+	input_dev->id.bustype = BUS_I2C;
+	input_dev->dev.parent = dev;
+	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);
+
+	if (pdata->t19_num_keys) {
+		__set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit);
+
+		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]);
+
+		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);
+	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);
+
+	input_set_drvdata(input_dev, data);
+
+	error = input_register_device(input_dev);
+	if (error) {
+		dev_err(dev, "Error %d registering input device\n", error);
+		goto err_free_mem;
+	}
+
+	data->input_dev = input_dev;
+
+	return 0;
+
+err_free_mem:
+	input_free_device(input_dev);
+	return error;
+}
+
+static int mxt_configure_objects(struct mxt_data *data,
+				 const struct firmware *cfg);
+
+static void mxt_config_cb(const struct firmware *cfg, void *ctx)
+{
+	mxt_configure_objects(ctx, cfg);
+}
+
 static int mxt_initialize(struct mxt_data *data)
 {
 	struct i2c_client *client = data->client;
-	struct mxt_info *info = &data->info;
 	int error;
+	bool alt_bootloader_addr = false;
+	bool retry = false;
 
+retry_info:
 	error = mxt_get_info(data);
-	if (error)
-		return error;
+	if (error) {
+retry_bootloader:
+		error = mxt_probe_bootloader(data, alt_bootloader_addr);
+		if (error) {
+			if (alt_bootloader_addr) {
+				/* Chip is not in appmode or bootloader mode */
+				return error;
+			}
 
-	data->object_table = kcalloc(info->object_num,
-				     sizeof(struct mxt_object),
-				     GFP_KERNEL);
-	if (!data->object_table) {
-		dev_err(&client->dev, "Failed to allocate memory\n");
-		return -ENOMEM;
+			dev_info(&client->dev, "Trying alternate bootloader address\n");
+			alt_bootloader_addr = true;
+			goto retry_bootloader;
+		} else {
+			if (retry) {
+				dev_err(&client->dev, "Could not recover from bootloader mode\n");
+				/*
+				 * We can reflash from this state, so do not
+				 * abort init
+				 */
+				data->in_bootloader = true;
+				return 0;
+			}
+
+			/* Attempt to exit bootloader into app mode */
+			mxt_send_bootloader_cmd(data, false);
+			msleep(MXT_FW_RESET_TIME);
+			retry = true;
+			goto retry_info;
+		}
 	}
 
 	/* Get object table information */
 	error = mxt_get_object_table(data);
 	if (error) {
 		dev_err(&client->dev, "Error %d reading object table\n", error);
-		goto err_free_object_table;
+		return error;
 	}
 
-	/* Check register init values */
-	error = mxt_check_reg_init(data);
-	if (error) {
-		dev_err(&client->dev, "Error %d initializing configuration\n",
-			error);
+	mxt_acquire_irq(data);
+	if (error)
 		goto err_free_object_table;
+
+	request_firmware_nowait(THIS_MODULE, true, MXT_CFG_NAME,
+				&data->client->dev, GFP_KERNEL, data,
+				mxt_config_cb);
+
+	return 0;
+
+err_free_object_table:
+	mxt_free_object_table(data);
+	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);
+		}
 	}
 
-	error = mxt_read_t9_resolution(data);
+	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)
+{
+	struct device *dev = &data->client->dev;
+	struct mxt_info *info = &data->info;
+	int error;
+
+	if (cfg) {
+		error = mxt_update_cfg(data, cfg);
+		if (error)
+			dev_warn(dev, "Error %d updating config\n", error);
+	}
+
+	error = mxt_init_t7_power_cfg(data);
 	if (error) {
-		dev_err(&client->dev, "Failed to initialize T9 resolution\n");
-		goto err_free_object_table;
+		dev_err(dev, "Failed to initialize power cfg\n");
+		return error;
 	}
 
-	dev_info(&client->dev,
+	error = mxt_initialize_t9_input_device(data);
+	if (error)
+		return error;
+
+	dev_info(dev,
 		 "Family: %u Variant: %u Firmware V%u.%u.%02X Objects: %u\n",
 		 info->family_id, info->variant_id, info->version >> 4,
 		 info->version & 0xf, info->build, info->object_num);
 
 	return 0;
-
-err_free_object_table:
-	mxt_free_object_table(data);
-	return error;
 }
 
 /* Firmware Version is returned as Major.Minor.Build */
@@ -1246,30 +1912,45 @@ static int mxt_load_fw(struct device *dev, const char *fn)
 	if (ret)
 		goto release_firmware;
 
-	ret = mxt_lookup_bootloader_address(data);
-	if (ret)
-		goto release_firmware;
+	if (!data->in_bootloader) {
+		/* Change to the bootloader mode */
+		data->in_bootloader = true;
 
-	/* Change to the bootloader mode */
-	data->in_bootloader = true;
+		ret = mxt_t6_command(data, MXT_COMMAND_RESET,
+				     MXT_BOOT_VALUE, false);
+		if (ret)
+			goto release_firmware;
 
-	ret = mxt_t6_command(data, MXT_COMMAND_RESET, MXT_BOOT_VALUE, false);
-	if (ret)
-		goto release_firmware;
+		msleep(MXT_RESET_TIME);
 
-	msleep(MXT_RESET_TIME);
+		/* Do not need to scan since we know family ID */
+		ret = mxt_lookup_bootloader_address(data, 0);
+		if (ret)
+			goto release_firmware;
+	} else {
+		enable_irq(data->irq);
+	}
 
+	mxt_free_object_table(data);
 	reinit_completion(&data->bl_completion);
 
-	ret = mxt_check_bootloader(data, MXT_WAITING_BOOTLOAD_CMD);
-	if (ret)
-		goto disable_irq;
+	ret = mxt_check_bootloader(data, MXT_WAITING_BOOTLOAD_CMD, false);
+	if (ret) {
+		/* Bootloader may still be unlocked from previous attempt */
+		ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA, false);
+		if (ret)
+			goto disable_irq;
+	} else {
+		dev_info(dev, "Unlocking bootloader\n");
 
-	/* Unlock bootloader */
-	mxt_unlock_bootloader(data);
+		/* Unlock bootloader */
+		ret = mxt_send_bootloader_cmd(data, true);
+		if (ret)
+			goto disable_irq;
+	}
 
 	while (pos < fw->size) {
-		ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA);
+		ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA, true);
 		if (ret)
 			goto disable_irq;
 
@@ -1283,7 +1964,7 @@ static int mxt_load_fw(struct device *dev, const char *fn)
 		if (ret)
 			goto disable_irq;
 
-		ret = mxt_check_bootloader(data, MXT_FRAME_CRC_PASS);
+		ret = mxt_check_bootloader(data, MXT_FRAME_CRC_PASS, true);
 		if (ret) {
 			retry++;
 
@@ -1343,13 +2024,7 @@ static ssize_t mxt_update_fw_store(struct device *dev,
 	} else {
 		dev_info(dev, "The firmware update succeeded\n");
 
-		mxt_free_object_table(data);
-
-		mxt_initialize(data);
-
-		enable_irq(data->irq);
-
-		error = mxt_make_highchg(data);
+		error = mxt_initialize(data);
 		if (error)
 			return error;
 	}
@@ -1376,16 +2051,15 @@ 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_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);
 }
 
 static void mxt_stop(struct mxt_data *data)
 {
-	/* Touch disable */
-	mxt_write_object(data,
-			MXT_TOUCH_MULTI_T9, MXT_TOUCH_CTRL, 0);
+	mxt_set_t7_power_cfg(data, MXT_POWER_CFG_DEEPSLEEP);
 }
 
 static int mxt_input_open(struct input_dev *dev)
@@ -1404,138 +2078,112 @@ static void mxt_input_close(struct input_dev *dev)
 	mxt_stop(data);
 }
 
-static int mxt_probe(struct i2c_client *client,
-		const struct i2c_device_id *id)
+#ifdef CONFIG_OF
+static struct mxt_platform_data *mxt_parse_dt(struct i2c_client *client)
+{
+	struct mxt_platform_data *pdata;
+	u32 *keymap;
+	u32 keycode;
+	int proplen, i, ret;
+
+	if (!client->dev.of_node)
+		return ERR_PTR(-ENODEV);
+
+	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)) {
+		pdata->t19_num_keys = proplen / sizeof(u32);
+
+		keymap = devm_kzalloc(&client->dev,
+				pdata->t19_num_keys * sizeof(keymap[0]),
+				GFP_KERNEL);
+		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;
+		}
+
+		pdata->t19_keymap = keymap;
+	}
+
+	return pdata;
+}
+#else
+static struct mxt_platform_data *mxt_parse_dt(struct i2c_client *client)
+{
+	dev_dbg(&client->dev, "No platform data specified\n");
+	return ERR_PTR(-EINVAL);
+}
+#endif
+
+static int mxt_probe(struct i2c_client *client, const struct i2c_device_id *id)
 {
-	const struct mxt_platform_data *pdata = dev_get_platdata(&client->dev);
 	struct mxt_data *data;
-	struct input_dev *input_dev;
+	const struct mxt_platform_data *pdata;
 	int error;
-	unsigned int num_mt_slots;
-	unsigned int mt_flags = 0;
-	int i;
 
-	if (!pdata)
-		return -EINVAL;
+	pdata = dev_get_platdata(&client->dev);
+	if (!pdata) {
+		pdata = mxt_parse_dt(client);
+		if (IS_ERR(pdata))
+			return PTR_ERR(pdata);
+	}
 
 	data = kzalloc(sizeof(struct mxt_data), GFP_KERNEL);
-	input_dev = input_allocate_device();
-	if (!data || !input_dev) {
+	if (!data) {
 		dev_err(&client->dev, "Failed to allocate memory\n");
-		error = -ENOMEM;
-		goto err_free_mem;
+		return -ENOMEM;
 	}
 
-	input_dev->name = "Atmel maXTouch Touchscreen";
 	snprintf(data->phys, sizeof(data->phys), "i2c-%u-%04x/input0",
 		 client->adapter->nr, client->addr);
 
-	input_dev->phys = data->phys;
-
-	input_dev->id.bustype = BUS_I2C;
-	input_dev->dev.parent = &client->dev;
-	input_dev->open = mxt_input_open;
-	input_dev->close = mxt_input_close;
-
 	data->client = client;
-	data->input_dev = input_dev;
 	data->pdata = pdata;
 	data->irq = client->irq;
+	i2c_set_clientdata(client, data);
 
 	init_completion(&data->bl_completion);
 	init_completion(&data->reset_completion);
 	init_completion(&data->crc_completion);
 
-	error = mxt_initialize(data);
-	if (error)
-		goto err_free_mem;
-
-	__set_bit(EV_ABS, input_dev->evbit);
-	__set_bit(EV_KEY, input_dev->evbit);
-	__set_bit(BTN_TOUCH, input_dev->keybit);
-
-	if (pdata->t19_num_keys) {
-		__set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit);
-
-		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]);
-
-		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)
-		goto err_free_object;
-	input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR,
-			     0, MXT_MAX_AREA, 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);
-
-	input_set_drvdata(input_dev, data);
-	i2c_set_clientdata(client, data);
-
 	error = request_threaded_irq(client->irq, NULL, mxt_interrupt,
 				     pdata->irqflags | IRQF_ONESHOT,
 				     client->name, data);
 	if (error) {
 		dev_err(&client->dev, "Failed to register interrupt\n");
-		goto err_free_object;
+		goto err_free_mem;
 	}
 
-	error = mxt_make_highchg(data);
-	if (error)
-		goto err_free_irq;
+	disable_irq(client->irq);
 
-	error = input_register_device(input_dev);
-	if (error) {
-		dev_err(&client->dev, "Error %d registering input device\n",
-			error);
+	error = mxt_initialize(data);
+	if (error)
 		goto err_free_irq;
-	}
 
 	error = sysfs_create_group(&client->dev.kobj, &mxt_attr_group);
 	if (error) {
 		dev_err(&client->dev, "Failure %d creating sysfs group\n",
 			error);
-		goto err_unregister_device;
+		goto err_free_object;
 	}
 
 	return 0;
 
-err_unregister_device:
-	input_unregister_device(input_dev);
-	input_dev = NULL;
+err_free_object:
+	mxt_free_object_table(data);
 err_free_irq:
 	free_irq(client->irq, data);
-err_free_object:
-	kfree(data->object_table);
 err_free_mem:
-	input_free_device(input_dev);
 	kfree(data);
 	return error;
 }
@@ -1547,7 +2195,7 @@ static int mxt_remove(struct i2c_client *client)
 	sysfs_remove_group(&client->dev.kobj, &mxt_attr_group);
 	free_irq(data->irq, data);
 	input_unregister_device(data->input_dev);
-	kfree(data->object_table);
+	mxt_free_object_table(data);
 	kfree(data);
 
 	return 0;
@@ -1576,8 +2224,6 @@ static int 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);
-
 	mutex_lock(&input_dev->mutex);
 
 	if (input_dev->users)
@@ -1591,6 +2237,12 @@ static int mxt_resume(struct device *dev)
 
 static SIMPLE_DEV_PM_OPS(mxt_pm_ops, mxt_suspend, mxt_resume);
 
+static const struct of_device_id mxt_of_match[] = {
+	{ .compatible = "atmel,maxtouch", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, mxt_of_match);
+
 static const struct i2c_device_id mxt_id[] = {
 	{ "qt602240_ts", 0 },
 	{ "atmel_mxt_ts", 0 },
@@ -1604,6 +2256,7 @@ static struct i2c_driver mxt_driver = {
 	.driver = {
 		.name	= "atmel_mxt_ts",
 		.owner	= THIS_MODULE,
+		.of_match_table = of_match_ptr(mxt_of_match),
 		.pm	= &mxt_pm_ops,
 	},
 	.probe		= mxt_probe,
diff --git a/drivers/input/touchscreen/atmel_tsadcc.c b/drivers/input/touchscreen/atmel_tsadcc.c
deleted file mode 100644
index a7c9d6967d1e..000000000000
--- a/drivers/input/touchscreen/atmel_tsadcc.c
+++ /dev/null
@@ -1,358 +0,0 @@
-/*
- *  Atmel Touch Screen Driver
- *
- *  Copyright (c) 2008 ATMEL
- *  Copyright (c) 2008 Dan Liang
- *  Copyright (c) 2008 TimeSys Corporation
- *  Copyright (c) 2008 Justin Waters
- *
- *  Based on touchscreen code from Atmel Corporation.
- *
- *  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/err.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/input.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/clk.h>
-#include <linux/platform_device.h>
-#include <linux/io.h>
-#include <linux/platform_data/atmel.h>
-#include <mach/cpu.h>
-
-/* Register definitions based on AT91SAM9RL64 preliminary draft datasheet */
-
-#define ATMEL_TSADCC_CR		0x00	/* Control register */
-#define   ATMEL_TSADCC_SWRST	(1 << 0)	/* Software Reset*/
-#define	  ATMEL_TSADCC_START	(1 << 1)	/* Start conversion */
-
-#define ATMEL_TSADCC_MR		0x04	/* Mode register */
-#define	  ATMEL_TSADCC_TSAMOD	(3    <<  0)	/* ADC mode */
-#define	    ATMEL_TSADCC_TSAMOD_ADC_ONLY_MODE	(0x0)	/* ADC Mode */
-#define	    ATMEL_TSADCC_TSAMOD_TS_ONLY_MODE	(0x1)	/* Touch Screen Only Mode */
-#define	  ATMEL_TSADCC_LOWRES	(1    <<  4)	/* Resolution selection */
-#define	  ATMEL_TSADCC_SLEEP	(1    <<  5)	/* Sleep mode */
-#define	  ATMEL_TSADCC_PENDET	(1    <<  6)	/* Pen Detect selection */
-#define	  ATMEL_TSADCC_PRES	(1    <<  7)	/* Pressure Measurement Selection */
-#define	  ATMEL_TSADCC_PRESCAL	(0x3f <<  8)	/* Prescalar Rate Selection */
-#define	  ATMEL_TSADCC_EPRESCAL	(0xff <<  8)	/* Prescalar Rate Selection (Extended) */
-#define	  ATMEL_TSADCC_STARTUP	(0x7f << 16)	/* Start Up time */
-#define	  ATMEL_TSADCC_SHTIM	(0xf  << 24)	/* Sample & Hold time */
-#define	  ATMEL_TSADCC_PENDBC	(0xf  << 28)	/* Pen Detect debouncing time */
-
-#define ATMEL_TSADCC_TRGR	0x08	/* Trigger register */
-#define	  ATMEL_TSADCC_TRGMOD	(7      <<  0)	/* Trigger mode */
-#define	    ATMEL_TSADCC_TRGMOD_NONE		(0 << 0)
-#define     ATMEL_TSADCC_TRGMOD_EXT_RISING	(1 << 0)
-#define     ATMEL_TSADCC_TRGMOD_EXT_FALLING	(2 << 0)
-#define     ATMEL_TSADCC_TRGMOD_EXT_ANY		(3 << 0)
-#define     ATMEL_TSADCC_TRGMOD_PENDET		(4 << 0)
-#define     ATMEL_TSADCC_TRGMOD_PERIOD		(5 << 0)
-#define     ATMEL_TSADCC_TRGMOD_CONTINUOUS	(6 << 0)
-#define   ATMEL_TSADCC_TRGPER	(0xffff << 16)	/* Trigger period */
-
-#define ATMEL_TSADCC_TSR	0x0C	/* Touch Screen register */
-#define	  ATMEL_TSADCC_TSFREQ	(0xf <<  0)	/* TS Frequency in Interleaved mode */
-#define	  ATMEL_TSADCC_TSSHTIM	(0xf << 24)	/* Sample & Hold time */
-
-#define ATMEL_TSADCC_CHER	0x10	/* Channel Enable register */
-#define ATMEL_TSADCC_CHDR	0x14	/* Channel Disable register */
-#define ATMEL_TSADCC_CHSR	0x18	/* Channel Status register */
-#define	  ATMEL_TSADCC_CH(n)	(1 << (n))	/* Channel number */
-
-#define ATMEL_TSADCC_SR		0x1C	/* Status register */
-#define	  ATMEL_TSADCC_EOC(n)	(1 << ((n)+0))	/* End of conversion for channel N */
-#define	  ATMEL_TSADCC_OVRE(n)	(1 << ((n)+8))	/* Overrun error for channel N */
-#define	  ATMEL_TSADCC_DRDY	(1 << 16)	/* Data Ready */
-#define	  ATMEL_TSADCC_GOVRE	(1 << 17)	/* General Overrun Error */
-#define	  ATMEL_TSADCC_ENDRX	(1 << 18)	/* End of RX Buffer */
-#define	  ATMEL_TSADCC_RXBUFF	(1 << 19)	/* TX Buffer full */
-#define	  ATMEL_TSADCC_PENCNT	(1 << 20)	/* Pen contact */
-#define	  ATMEL_TSADCC_NOCNT	(1 << 21)	/* No contact */
-
-#define ATMEL_TSADCC_LCDR	0x20	/* Last Converted Data register */
-#define	  ATMEL_TSADCC_DATA	(0x3ff << 0)	/* Channel data */
-
-#define ATMEL_TSADCC_IER	0x24	/* Interrupt Enable register */
-#define ATMEL_TSADCC_IDR	0x28	/* Interrupt Disable register */
-#define ATMEL_TSADCC_IMR	0x2C	/* Interrupt Mask register */
-#define ATMEL_TSADCC_CDR0	0x30	/* Channel Data 0 */
-#define ATMEL_TSADCC_CDR1	0x34	/* Channel Data 1 */
-#define ATMEL_TSADCC_CDR2	0x38	/* Channel Data 2 */
-#define ATMEL_TSADCC_CDR3	0x3C	/* Channel Data 3 */
-#define ATMEL_TSADCC_CDR4	0x40	/* Channel Data 4 */
-#define ATMEL_TSADCC_CDR5	0x44	/* Channel Data 5 */
-
-#define ATMEL_TSADCC_XPOS	0x50
-#define ATMEL_TSADCC_Z1DAT	0x54
-#define ATMEL_TSADCC_Z2DAT	0x58
-
-#define PRESCALER_VAL(x)	((x) >> 8)
-
-#define ADC_DEFAULT_CLOCK	100000
-
-struct atmel_tsadcc {
-	struct input_dev	*input;
-	char			phys[32];
-	struct clk		*clk;
-	int			irq;
-	unsigned int		prev_absx;
-	unsigned int		prev_absy;
-	unsigned char		bufferedmeasure;
-};
-
-static void __iomem		*tsc_base;
-
-#define atmel_tsadcc_read(reg)		__raw_readl(tsc_base + (reg))
-#define atmel_tsadcc_write(reg, val)	__raw_writel((val), tsc_base + (reg))
-
-static irqreturn_t atmel_tsadcc_interrupt(int irq, void *dev)
-{
-	struct atmel_tsadcc	*ts_dev = (struct atmel_tsadcc *)dev;
-	struct input_dev	*input_dev = ts_dev->input;
-
-	unsigned int status;
-	unsigned int reg;
-
-	status = atmel_tsadcc_read(ATMEL_TSADCC_SR);
-	status &= atmel_tsadcc_read(ATMEL_TSADCC_IMR);
-
-	if (status & ATMEL_TSADCC_NOCNT) {
-		/* Contact lost */
-		reg = atmel_tsadcc_read(ATMEL_TSADCC_MR) | ATMEL_TSADCC_PENDBC;
-
-		atmel_tsadcc_write(ATMEL_TSADCC_MR, reg);
-		atmel_tsadcc_write(ATMEL_TSADCC_TRGR, ATMEL_TSADCC_TRGMOD_NONE);
-		atmel_tsadcc_write(ATMEL_TSADCC_IDR,
-				   ATMEL_TSADCC_EOC(3) | ATMEL_TSADCC_NOCNT);
-		atmel_tsadcc_write(ATMEL_TSADCC_IER, ATMEL_TSADCC_PENCNT);
-
-		input_report_key(input_dev, BTN_TOUCH, 0);
-		ts_dev->bufferedmeasure = 0;
-		input_sync(input_dev);
-
-	} else if (status & ATMEL_TSADCC_PENCNT) {
-		/* Pen detected */
-		reg = atmel_tsadcc_read(ATMEL_TSADCC_MR);
-		reg &= ~ATMEL_TSADCC_PENDBC;
-
-		atmel_tsadcc_write(ATMEL_TSADCC_IDR, ATMEL_TSADCC_PENCNT);
-		atmel_tsadcc_write(ATMEL_TSADCC_MR, reg);
-		atmel_tsadcc_write(ATMEL_TSADCC_IER,
-				   ATMEL_TSADCC_EOC(3) | ATMEL_TSADCC_NOCNT);
-		atmel_tsadcc_write(ATMEL_TSADCC_TRGR,
-				   ATMEL_TSADCC_TRGMOD_PERIOD | (0x0FFF << 16));
-
-	} else if (status & ATMEL_TSADCC_EOC(3)) {
-		/* Conversion finished */
-
-		if (ts_dev->bufferedmeasure) {
-			/* Last measurement is always discarded, since it can
-			 * be erroneous.
-			 * Always report previous measurement */
-			input_report_abs(input_dev, ABS_X, ts_dev->prev_absx);
-			input_report_abs(input_dev, ABS_Y, ts_dev->prev_absy);
-			input_report_key(input_dev, BTN_TOUCH, 1);
-			input_sync(input_dev);
-		} else
-			ts_dev->bufferedmeasure = 1;
-
-		/* Now make new measurement */
-		ts_dev->prev_absx = atmel_tsadcc_read(ATMEL_TSADCC_CDR3) << 10;
-		ts_dev->prev_absx /= atmel_tsadcc_read(ATMEL_TSADCC_CDR2);
-
-		ts_dev->prev_absy = atmel_tsadcc_read(ATMEL_TSADCC_CDR1) << 10;
-		ts_dev->prev_absy /= atmel_tsadcc_read(ATMEL_TSADCC_CDR0);
-	}
-
-	return IRQ_HANDLED;
-}
-
-/*
- * The functions for inserting/removing us as a module.
- */
-
-static int atmel_tsadcc_probe(struct platform_device *pdev)
-{
-	struct atmel_tsadcc	*ts_dev;
-	struct input_dev	*input_dev;
-	struct resource		*res;
-	struct at91_tsadcc_data *pdata = dev_get_platdata(&pdev->dev);
-	int		err;
-	unsigned int	prsc;
-	unsigned int	reg;
-
-	if (!pdata)
-		return -EINVAL;
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(&pdev->dev, "no mmio resource defined.\n");
-		return -ENXIO;
-	}
-
-	/* Allocate memory for device */
-	ts_dev = kzalloc(sizeof(struct atmel_tsadcc), GFP_KERNEL);
-	if (!ts_dev) {
-		dev_err(&pdev->dev, "failed to allocate memory.\n");
-		return -ENOMEM;
-	}
-	platform_set_drvdata(pdev, ts_dev);
-
-	input_dev = input_allocate_device();
-	if (!input_dev) {
-		dev_err(&pdev->dev, "failed to allocate input device.\n");
-		err = -EBUSY;
-		goto err_free_mem;
-	}
-
-	ts_dev->irq = platform_get_irq(pdev, 0);
-	if (ts_dev->irq < 0) {
-		dev_err(&pdev->dev, "no irq ID is designated.\n");
-		err = -ENODEV;
-		goto err_free_dev;
-	}
-
-	if (!request_mem_region(res->start, resource_size(res),
-				"atmel tsadcc regs")) {
-		dev_err(&pdev->dev, "resources is unavailable.\n");
-		err = -EBUSY;
-		goto err_free_dev;
-	}
-
-	tsc_base = ioremap(res->start, resource_size(res));
-	if (!tsc_base) {
-		dev_err(&pdev->dev, "failed to map registers.\n");
-		err = -ENOMEM;
-		goto err_release_mem;
-	}
-
-	err = request_irq(ts_dev->irq, atmel_tsadcc_interrupt, 0,
-			pdev->dev.driver->name, ts_dev);
-	if (err) {
-		dev_err(&pdev->dev, "failed to allocate irq.\n");
-		goto err_unmap_regs;
-	}
-
-	ts_dev->clk = clk_get(&pdev->dev, "tsc_clk");
-	if (IS_ERR(ts_dev->clk)) {
-		dev_err(&pdev->dev, "failed to get ts_clk\n");
-		err = PTR_ERR(ts_dev->clk);
-		goto err_free_irq;
-	}
-
-	ts_dev->input = input_dev;
-	ts_dev->bufferedmeasure = 0;
-
-	snprintf(ts_dev->phys, sizeof(ts_dev->phys),
-		 "%s/input0", dev_name(&pdev->dev));
-
-	input_dev->name = "atmel touch screen controller";
-	input_dev->phys = ts_dev->phys;
-	input_dev->dev.parent = &pdev->dev;
-
-	__set_bit(EV_ABS, input_dev->evbit);
-	input_set_abs_params(input_dev, ABS_X, 0, 0x3FF, 0, 0);
-	input_set_abs_params(input_dev, ABS_Y, 0, 0x3FF, 0, 0);
-
-	input_set_capability(input_dev, EV_KEY, BTN_TOUCH);
-
-	/* clk_enable() always returns 0, no need to check it */
-	clk_enable(ts_dev->clk);
-
-	prsc = clk_get_rate(ts_dev->clk);
-	dev_info(&pdev->dev, "Master clock is set at: %d Hz\n", prsc);
-
-	if (!pdata->adc_clock)
-		pdata->adc_clock = ADC_DEFAULT_CLOCK;
-
-	prsc = (prsc / (2 * pdata->adc_clock)) - 1;
-
-	/* saturate if this value is too high */
-	if (cpu_is_at91sam9rl()) {
-		if (prsc > PRESCALER_VAL(ATMEL_TSADCC_PRESCAL))
-			prsc = PRESCALER_VAL(ATMEL_TSADCC_PRESCAL);
-	} else {
-		if (prsc > PRESCALER_VAL(ATMEL_TSADCC_EPRESCAL))
-			prsc = PRESCALER_VAL(ATMEL_TSADCC_EPRESCAL);
-	}
-
-	dev_info(&pdev->dev, "Prescaler is set at: %d\n", prsc);
-
-	reg = ATMEL_TSADCC_TSAMOD_TS_ONLY_MODE		|
-		((0x00 << 5) & ATMEL_TSADCC_SLEEP)	|	/* Normal Mode */
-		((0x01 << 6) & ATMEL_TSADCC_PENDET)	|	/* Enable Pen Detect */
-		(prsc << 8)				|
-		((0x26 << 16) & ATMEL_TSADCC_STARTUP)	|
-		((pdata->pendet_debounce << 28) & ATMEL_TSADCC_PENDBC);
-
-	atmel_tsadcc_write(ATMEL_TSADCC_CR, ATMEL_TSADCC_SWRST);
-	atmel_tsadcc_write(ATMEL_TSADCC_MR, reg);
-	atmel_tsadcc_write(ATMEL_TSADCC_TRGR, ATMEL_TSADCC_TRGMOD_NONE);
-	atmel_tsadcc_write(ATMEL_TSADCC_TSR,
-		(pdata->ts_sample_hold_time << 24) & ATMEL_TSADCC_TSSHTIM);
-
-	atmel_tsadcc_read(ATMEL_TSADCC_SR);
-	atmel_tsadcc_write(ATMEL_TSADCC_IER, ATMEL_TSADCC_PENCNT);
-
-	/* All went ok, so register to the input system */
-	err = input_register_device(input_dev);
-	if (err)
-		goto err_fail;
-
-	return 0;
-
-err_fail:
-	clk_disable(ts_dev->clk);
-	clk_put(ts_dev->clk);
-err_free_irq:
-	free_irq(ts_dev->irq, ts_dev);
-err_unmap_regs:
-	iounmap(tsc_base);
-err_release_mem:
-	release_mem_region(res->start, resource_size(res));
-err_free_dev:
-	input_free_device(input_dev);
-err_free_mem:
-	kfree(ts_dev);
-	return err;
-}
-
-static int atmel_tsadcc_remove(struct platform_device *pdev)
-{
-	struct atmel_tsadcc *ts_dev = platform_get_drvdata(pdev);
-	struct resource *res;
-
-	free_irq(ts_dev->irq, ts_dev);
-
-	input_unregister_device(ts_dev->input);
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	iounmap(tsc_base);
-	release_mem_region(res->start, resource_size(res));
-
-	clk_disable(ts_dev->clk);
-	clk_put(ts_dev->clk);
-
-	kfree(ts_dev);
-
-	return 0;
-}
-
-static struct platform_driver atmel_tsadcc_driver = {
-	.probe		= atmel_tsadcc_probe,
-	.remove		= atmel_tsadcc_remove,
-	.driver		= {
-		.name	= "atmel_tsadcc",
-	},
-};
-module_platform_driver(atmel_tsadcc_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Atmel TouchScreen Driver");
-MODULE_AUTHOR("Dan Liang <dan.liang@atmel.com>");
-
diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c
index d4f33992ad8c..5a6d50c004d7 100644
--- a/drivers/input/touchscreen/edt-ft5x06.c
+++ b/drivers/input/touchscreen/edt-ft5x06.c
@@ -733,8 +733,7 @@ edt_ft5x06_ts_prepare_debugfs(struct edt_ft5x06_ts_data *tsdata,
 static void
 edt_ft5x06_ts_teardown_debugfs(struct edt_ft5x06_ts_data *tsdata)
 {
-	if (tsdata->debug_dir)
-		debugfs_remove_recursive(tsdata->debug_dir);
+	debugfs_remove_recursive(tsdata->debug_dir);
 	kfree(tsdata->raw_buffer);
 }
 
diff --git a/drivers/input/touchscreen/ipaq-micro-ts.c b/drivers/input/touchscreen/ipaq-micro-ts.c
new file mode 100644
index 000000000000..62c8976e616f
--- /dev/null
+++ b/drivers/input/touchscreen/ipaq-micro-ts.c
@@ -0,0 +1,166 @@
+/*
+ * 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.
+ *
+ * h3600 atmel micro companion support, touchscreen subdevice
+ * Author : Alessandro Gardich <gremlin@gremlin.it>
+ * Author : Dmitry Artamonow <mad_soft@inbox.ru>
+ * Author : Linus Walleij <linus.walleij@linaro.org>
+ *
+ */
+
+#include <asm/byteorder.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/pm.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/input.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/mfd/ipaq-micro.h>
+
+struct touchscreen_data {
+	struct input_dev *input;
+	struct ipaq_micro *micro;
+};
+
+static void micro_ts_receive(void *data, int len, unsigned char *msg)
+{
+	struct touchscreen_data *ts = data;
+
+	if (len == 4) {
+		input_report_abs(ts->input, ABS_X,
+				 be16_to_cpup((__be16 *) &msg[2]));
+		input_report_abs(ts->input, ABS_Y,
+				 be16_to_cpup((__be16 *) &msg[0]));
+		input_report_key(ts->input, BTN_TOUCH, 1);
+		input_sync(ts->input);
+	} else if (len == 0) {
+		input_report_abs(ts->input, ABS_X, 0);
+		input_report_abs(ts->input, ABS_Y, 0);
+		input_report_key(ts->input, BTN_TOUCH, 0);
+		input_sync(ts->input);
+	}
+}
+
+static void micro_ts_toggle_receive(struct touchscreen_data *ts, bool enable)
+{
+	struct ipaq_micro *micro = ts->micro;
+
+	spin_lock_irq(&micro->lock);
+
+	if (enable) {
+		micro->ts = micro_ts_receive;
+		micro->ts_data = ts;
+	} else {
+		micro->ts = NULL;
+		micro->ts_data = NULL;
+	}
+
+	spin_unlock_irq(&ts->micro->lock);
+}
+
+static int micro_ts_open(struct input_dev *input)
+{
+	struct touchscreen_data *ts = input_get_drvdata(input);
+
+	micro_ts_toggle_receive(ts, true);
+
+	return 0;
+}
+
+static void micro_ts_close(struct input_dev *input)
+{
+	struct touchscreen_data *ts = input_get_drvdata(input);
+
+	micro_ts_toggle_receive(ts, false);
+}
+
+static int micro_ts_probe(struct platform_device *pdev)
+{
+	struct ipaq_micro *micro = dev_get_drvdata(pdev->dev.parent);
+	struct touchscreen_data *ts;
+	int error;
+
+	ts = devm_kzalloc(&pdev->dev, sizeof(*ts), GFP_KERNEL);
+	if (!ts)
+		return -ENOMEM;
+
+	ts->micro = micro;
+
+	ts->input = devm_input_allocate_device(&pdev->dev);
+	if (!ts->input) {
+		dev_err(&pdev->dev, "failed to allocate input device\n");
+		return -ENOMEM;
+	}
+
+	ts->input->name = "ipaq micro ts";
+	ts->input->open = micro_ts_open;
+	ts->input->close = micro_ts_close;
+
+	input_set_drvdata(ts->input, ts);
+
+	input_set_capability(ts->input, EV_KEY, BTN_TOUCH);
+	input_set_capability(ts->input, EV_ABS, ABS_X);
+	input_set_capability(ts->input, EV_ABS, ABS_Y);
+	input_set_abs_params(ts->input, ABS_X, 0, 1023, 0, 0);
+	input_set_abs_params(ts->input, ABS_Y, 0, 1023, 0, 0);
+
+	error = input_register_device(ts->input);
+	if (error) {
+		dev_err(&pdev->dev, "error registering touch input\n");
+		return error;
+	}
+
+	platform_set_drvdata(pdev, ts);
+
+	dev_info(&pdev->dev, "iPAQ micro touchscreen\n");
+
+	return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int micro_ts_suspend(struct device *dev)
+{
+	struct touchscreen_data *ts = dev_get_drvdata(dev);
+
+	micro_ts_toggle_receive(ts, false);
+
+	return 0;
+}
+
+static int micro_ts_resume(struct device *dev)
+{
+	struct touchscreen_data *ts = dev_get_drvdata(dev);
+	struct input_dev *input = ts->input;
+
+	mutex_lock(&input->mutex);
+
+	if (input->users)
+		micro_ts_toggle_receive(ts, true);
+
+	mutex_unlock(&input->mutex);
+
+	return 0;
+}
+#endif
+
+static const struct dev_pm_ops micro_ts_dev_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(micro_ts_suspend, micro_ts_resume)
+};
+
+static struct platform_driver micro_ts_device_driver = {
+	.driver	= {
+		.name	= "ipaq-micro-ts",
+		.pm	= &micro_ts_dev_pm_ops,
+	},
+	.probe	= micro_ts_probe,
+};
+module_platform_driver(micro_ts_device_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("driver for iPAQ Atmel micro touchscreen");
+MODULE_ALIAS("platform:ipaq-micro-ts");
diff --git a/drivers/input/touchscreen/jornada720_ts.c b/drivers/input/touchscreen/jornada720_ts.c
index 7324c5c0fb86..651ec71a5c68 100644
--- a/drivers/input/touchscreen/jornada720_ts.c
+++ b/drivers/input/touchscreen/jornada720_ts.c
@@ -36,22 +36,21 @@ struct jornada_ts {
 
 static void jornada720_ts_collect_data(struct jornada_ts *jornada_ts)
 {
+	/* 3 low word X samples */
+	jornada_ts->x_data[0] = jornada_ssp_byte(TXDUMMY);
+	jornada_ts->x_data[1] = jornada_ssp_byte(TXDUMMY);
+	jornada_ts->x_data[2] = jornada_ssp_byte(TXDUMMY);
 
-    /* 3 low word X samples */
-    jornada_ts->x_data[0] = jornada_ssp_byte(TXDUMMY);
-    jornada_ts->x_data[1] = jornada_ssp_byte(TXDUMMY);
-    jornada_ts->x_data[2] = jornada_ssp_byte(TXDUMMY);
+	/* 3 low word Y samples */
+	jornada_ts->y_data[0] = jornada_ssp_byte(TXDUMMY);
+	jornada_ts->y_data[1] = jornada_ssp_byte(TXDUMMY);
+	jornada_ts->y_data[2] = jornada_ssp_byte(TXDUMMY);
 
-    /* 3 low word Y samples */
-    jornada_ts->y_data[0] = jornada_ssp_byte(TXDUMMY);
-    jornada_ts->y_data[1] = jornada_ssp_byte(TXDUMMY);
-    jornada_ts->y_data[2] = jornada_ssp_byte(TXDUMMY);
+	/* combined x samples bits */
+	jornada_ts->x_data[3] = jornada_ssp_byte(TXDUMMY);
 
-    /* combined x samples bits */
-    jornada_ts->x_data[3] = jornada_ssp_byte(TXDUMMY);
-
-    /* combined y samples bits */
-    jornada_ts->y_data[3] = jornada_ssp_byte(TXDUMMY);
+	/* combined y samples bits */
+	jornada_ts->y_data[3] = jornada_ssp_byte(TXDUMMY);
 }
 
 static int jornada720_ts_average(int coords[4])
@@ -104,13 +103,13 @@ static int jornada720_ts_probe(struct platform_device *pdev)
 	struct input_dev *input_dev;
 	int error;
 
-	jornada_ts = kzalloc(sizeof(struct jornada_ts), GFP_KERNEL);
-	input_dev = input_allocate_device();
+	jornada_ts = devm_kzalloc(&pdev->dev, sizeof(*jornada_ts), GFP_KERNEL);
+	if (!jornada_ts)
+		return -ENOMEM;
 
-	if (!jornada_ts || !input_dev) {
-		error = -ENOMEM;
-		goto fail1;
-	}
+	input_dev = devm_input_allocate_device(&pdev->dev);
+	if (!input_dev)
+		return -ENOMEM;
 
 	platform_set_drvdata(pdev, jornada_ts);
 
@@ -126,36 +125,18 @@ static int jornada720_ts_probe(struct platform_device *pdev)
 	input_set_abs_params(input_dev, ABS_X, 270, 3900, 0, 0);
 	input_set_abs_params(input_dev, ABS_Y, 180, 3700, 0, 0);
 
-	error = request_irq(IRQ_GPIO9,
-			jornada720_ts_interrupt,
-			IRQF_TRIGGER_RISING,
-			"HP7XX Touchscreen driver", pdev);
+	error = devm_request_irq(&pdev->dev, IRQ_GPIO9,
+				 jornada720_ts_interrupt,
+				 IRQF_TRIGGER_RISING,
+				 "HP7XX Touchscreen driver", pdev);
 	if (error) {
-		printk(KERN_INFO "HP7XX TS : Unable to acquire irq!\n");
-		goto fail1;
+		dev_err(&pdev->dev, "HP7XX TS : Unable to acquire irq!\n");
+		return error;
 	}
 
 	error = input_register_device(jornada_ts->dev);
 	if (error)
-		goto fail2;
-
-	return 0;
-
- fail2:
-	free_irq(IRQ_GPIO9, pdev);
- fail1:
-	input_free_device(input_dev);
-	kfree(jornada_ts);
-	return error;
-}
-
-static int jornada720_ts_remove(struct platform_device *pdev)
-{
-	struct jornada_ts *jornada_ts = platform_get_drvdata(pdev);
-
-	free_irq(IRQ_GPIO9, pdev);
-	input_unregister_device(jornada_ts->dev);
-	kfree(jornada_ts);
+		return error;
 
 	return 0;
 }
@@ -165,7 +146,6 @@ MODULE_ALIAS("platform:jornada_ts");
 
 static struct platform_driver jornada720_ts_driver = {
 	.probe		= jornada720_ts_probe,
-	.remove		= jornada720_ts_remove,
 	.driver		= {
 		.name	= "jornada_ts",
 		.owner	= THIS_MODULE,
diff --git a/drivers/input/touchscreen/mcs5000_ts.c b/drivers/input/touchscreen/mcs5000_ts.c
index 00510a9836b3..8b47e1fecb25 100644
--- a/drivers/input/touchscreen/mcs5000_ts.c
+++ b/drivers/input/touchscreen/mcs5000_ts.c
@@ -248,8 +248,7 @@ static int mcs5000_ts_probe(struct i2c_client *client,
 	return 0;
 }
 
-#ifdef CONFIG_PM
-static int mcs5000_ts_suspend(struct device *dev)
+static int __maybe_unused mcs5000_ts_suspend(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 
@@ -259,7 +258,7 @@ static int mcs5000_ts_suspend(struct device *dev)
 	return 0;
 }
 
-static int mcs5000_ts_resume(struct device *dev)
+static int __maybe_unused mcs5000_ts_resume(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct mcs5000_ts_data *data = i2c_get_clientdata(client);
@@ -269,7 +268,6 @@ static int mcs5000_ts_resume(struct device *dev)
 
 	return 0;
 }
-#endif
 
 static SIMPLE_DEV_PM_OPS(mcs5000_ts_pm, mcs5000_ts_suspend, mcs5000_ts_resume);
 
diff --git a/drivers/input/touchscreen/pixcir_i2c_ts.c b/drivers/input/touchscreen/pixcir_i2c_ts.c
index 19c6c0fdc94b..fc49c75317d1 100644
--- a/drivers/input/touchscreen/pixcir_i2c_ts.c
+++ b/drivers/input/touchscreen/pixcir_i2c_ts.c
@@ -23,22 +23,51 @@
 #include <linux/slab.h>
 #include <linux/i2c.h>
 #include <linux/input.h>
+#include <linux/input/mt.h>
 #include <linux/input/pixcir_ts.h>
 #include <linux/gpio.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/of_device.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 *chip;
+	const struct pixcir_ts_platform_data *pdata;
 	bool running;
+	int max_fingers;	/* Max fingers supported in this instance */
+};
+
+struct pixcir_touch {
+	int x;
+	int y;
+	int id;
+};
+
+struct pixcir_report_data {
+	int num_touches;
+	struct pixcir_touch touches[PIXCIR_MAX_SLOTS];
 };
 
-static void pixcir_ts_poscheck(struct pixcir_i2c_ts_data *data)
+static void pixcir_ts_parse(struct pixcir_i2c_ts_data *tsdata,
+			    struct pixcir_report_data *report)
 {
-	struct pixcir_i2c_ts_data *tsdata = data;
-	u8 rdbuf[10], wrbuf[1] = { 0 };
+	u8 rdbuf[2 + PIXCIR_MAX_SLOTS * 5];
+	u8 wrbuf[1] = { 0 };
+	u8 *bufptr;
 	u8 touch;
-	int ret;
+	int ret, i;
+	int readsize;
+	const struct pixcir_i2c_chip_data *chip = &tsdata->pdata->chip;
+
+	memset(report, 0, sizeof(struct pixcir_report_data));
+
+	i = chip->has_hw_ids ? 1 : 0;
+	readsize = 2 + tsdata->max_fingers * (4 + i);
+	if (readsize > sizeof(rdbuf))
+		readsize = sizeof(rdbuf);
 
 	ret = i2c_master_send(tsdata->client, wrbuf, sizeof(wrbuf));
 	if (ret != sizeof(wrbuf)) {
@@ -48,7 +77,7 @@ static void pixcir_ts_poscheck(struct pixcir_i2c_ts_data *data)
 		return;
 	}
 
-	ret = i2c_master_recv(tsdata->client, rdbuf, sizeof(rdbuf));
+	ret = i2c_master_recv(tsdata->client, rdbuf, readsize);
 	if (ret != sizeof(rdbuf)) {
 		dev_err(&tsdata->client->dev,
 			"%s: i2c_master_recv failed(), ret=%d\n",
@@ -56,45 +85,103 @@ static void pixcir_ts_poscheck(struct pixcir_i2c_ts_data *data)
 		return;
 	}
 
-	touch = rdbuf[0];
-	if (touch) {
-		u16 posx1 = (rdbuf[3] << 8) | rdbuf[2];
-		u16 posy1 = (rdbuf[5] << 8) | rdbuf[4];
-		u16 posx2 = (rdbuf[7] << 8) | rdbuf[6];
-		u16 posy2 = (rdbuf[9] << 8) | rdbuf[8];
-
-		input_report_key(tsdata->input, BTN_TOUCH, 1);
-		input_report_abs(tsdata->input, ABS_X, posx1);
-		input_report_abs(tsdata->input, ABS_Y, posy1);
-
-		input_report_abs(tsdata->input, ABS_MT_POSITION_X, posx1);
-		input_report_abs(tsdata->input, ABS_MT_POSITION_Y, posy1);
-		input_mt_sync(tsdata->input);
-
-		if (touch == 2) {
-			input_report_abs(tsdata->input,
-					 ABS_MT_POSITION_X, posx2);
-			input_report_abs(tsdata->input,
-					 ABS_MT_POSITION_Y, posy2);
-			input_mt_sync(tsdata->input);
+	touch = rdbuf[0] & 0x7;
+	if (touch > tsdata->max_fingers)
+		touch = tsdata->max_fingers;
+
+	report->num_touches = touch;
+	bufptr = &rdbuf[2];
+
+	for (i = 0; i < touch; i++) {
+		report->touches[i].x = (bufptr[1] << 8) | bufptr[0];
+		report->touches[i].y = (bufptr[3] << 8) | bufptr[2];
+
+		if (chip->has_hw_ids) {
+			report->touches[i].id = bufptr[4];
+			bufptr = bufptr + 5;
+		} else {
+			bufptr = bufptr + 4;
+		}
+	}
+}
+
+static void pixcir_ts_report(struct pixcir_i2c_ts_data *ts,
+			     struct pixcir_report_data *report)
+{
+	struct input_mt_pos pos[PIXCIR_MAX_SLOTS];
+	int slots[PIXCIR_MAX_SLOTS];
+	struct pixcir_touch *touch;
+	int n, i, slot;
+	struct device *dev = &ts->client->dev;
+	const struct pixcir_i2c_chip_data *chip = &ts->pdata->chip;
+
+	n = report->num_touches;
+	if (n > PIXCIR_MAX_SLOTS)
+		n = PIXCIR_MAX_SLOTS;
+
+	if (!chip->has_hw_ids) {
+		for (i = 0; i < n; i++) {
+			touch = &report->touches[i];
+			pos[i].x = touch->x;
+			pos[i].y = touch->y;
+		}
+
+		input_mt_assign_slots(ts->input, slots, pos, n);
+	}
+
+	for (i = 0; i < n; i++) {
+		touch = &report->touches[i];
+
+		if (chip->has_hw_ids) {
+			slot = input_mt_get_slot_by_key(ts->input, touch->id);
+			if (slot < 0) {
+				dev_dbg(dev, "no free slot for id 0x%x\n",
+					touch->id);
+				continue;
+			}
+		} else {
+			slot = slots[i];
 		}
-	} else {
-		input_report_key(tsdata->input, BTN_TOUCH, 0);
+
+		input_mt_slot(ts->input, slot);
+		input_mt_report_slot_state(ts->input,
+					   MT_TOOL_FINGER, true);
+
+		input_event(ts->input, EV_ABS, ABS_MT_POSITION_X, touch->x);
+		input_event(ts->input, EV_ABS, ABS_MT_POSITION_Y, touch->y);
+
+		dev_dbg(dev, "%d: slot %d, x %d, y %d\n",
+			i, slot, touch->x, touch->y);
 	}
 
-	input_sync(tsdata->input);
+	input_mt_sync_frame(ts->input);
+	input_sync(ts->input);
 }
 
 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->chip;
+	const struct pixcir_ts_platform_data *pdata = tsdata->pdata;
+	struct pixcir_report_data report;
 
 	while (tsdata->running) {
-		pixcir_ts_poscheck(tsdata);
-
-		if (gpio_get_value(pdata->gpio_attb))
+		/* parse packet */
+		pixcir_ts_parse(tsdata, &report);
+
+		/* report it */
+		pixcir_ts_report(tsdata, &report);
+
+		if (gpio_get_value(pdata->gpio_attb)) {
+			if (report.num_touches) {
+				/*
+				 * Last report with no finger up?
+				 * Do it now then.
+				 */
+				input_mt_sync_frame(tsdata->input);
+				input_sync(tsdata->input);
+			}
 			break;
+		}
 
 		msleep(20);
 	}
@@ -323,16 +410,69 @@ unlock:
 static SIMPLE_DEV_PM_OPS(pixcir_dev_pm_ops,
 			 pixcir_i2c_ts_suspend, pixcir_i2c_ts_resume);
 
+#ifdef CONFIG_OF
+static const struct of_device_id pixcir_of_match[];
+
+static struct pixcir_ts_platform_data *pixcir_parse_dt(struct device *dev)
+{
+	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;
+
+	dev_dbg(dev, "%s: x %d, y %d, gpio %d\n", __func__,
+		pdata->x_max + 1, pdata->y_max + 1, pdata->gpio_attb);
+
+	return pdata;
+}
+#else
+static struct pixcir_ts_platform_data *pixcir_parse_dt(struct device *dev)
+{
+	return ERR_PTR(-EINVAL);
+}
+#endif
+
 static int pixcir_i2c_ts_probe(struct i2c_client *client,
 					 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);
+	}
+
 	if (!pdata) {
 		dev_err(&client->dev, "platform data not defined\n");
 		return -EINVAL;
@@ -343,6 +483,11 @@ static int pixcir_i2c_ts_probe(struct i2c_client *client,
 		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;
@@ -355,7 +500,7 @@ static int pixcir_i2c_ts_probe(struct i2c_client *client,
 
 	tsdata->client = client;
 	tsdata->input = input;
-	tsdata->chip = pdata;
+	tsdata->pdata = pdata;
 
 	input->name = client->name;
 	input->id.bustype = BUS_I2C;
@@ -371,6 +516,20 @@ static int pixcir_i2c_ts_probe(struct i2c_client *client,
 	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);
 
+	tsdata->max_fingers = tsdata->pdata->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",
+			 tsdata->max_fingers);
+	}
+
+	error = input_mt_init_slots(input, tsdata->max_fingers,
+				    INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
+	if (error) {
+		dev_err(dev, "Error initializing Multi-Touch slots\n");
+		return error;
+	}
+
 	input_set_drvdata(input, tsdata);
 
 	error = devm_gpio_request_one(dev, pdata->gpio_attb,
@@ -419,15 +578,36 @@ static int pixcir_i2c_ts_remove(struct i2c_client *client)
 
 static const struct i2c_device_id pixcir_i2c_ts_id[] = {
 	{ "pixcir_ts", 0 },
+	{ "pixcir_tangoc", 0 },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, pixcir_i2c_ts_id);
 
+#ifdef CONFIG_OF
+static const struct pixcir_i2c_chip_data pixcir_ts_data = {
+	.max_fingers = 2,
+	/* no hw id support */
+};
+
+static const struct pixcir_i2c_chip_data pixcir_tangoc_data = {
+	.max_fingers = 5,
+	.has_hw_ids = true,
+};
+
+static const struct of_device_id pixcir_of_match[] = {
+	{ .compatible = "pixcir,pixcir_ts", .data = &pixcir_ts_data },
+	{ .compatible = "pixcir,pixcir_tangoc", .data = &pixcir_tangoc_data },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, pixcir_of_match);
+#endif
+
 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),
 	},
 	.probe		= pixcir_i2c_ts_probe,
 	.remove		= pixcir_i2c_ts_remove,
diff --git a/drivers/input/touchscreen/s3c2410_ts.c b/drivers/input/touchscreen/s3c2410_ts.c
index 19cb247dbb86..5a69ded9b53c 100644
--- a/drivers/input/touchscreen/s3c2410_ts.c
+++ b/drivers/input/touchscreen/s3c2410_ts.c
@@ -264,7 +264,7 @@ static int s3c2410ts_probe(struct platform_device *pdev)
 		return -ENOENT;
 	}
 
-	clk_enable(ts.clock);
+	clk_prepare_enable(ts.clock);
 	dev_dbg(dev, "got and enabled clocks\n");
 
 	ts.irq_tc = ret = platform_get_irq(pdev, 0);
@@ -369,7 +369,7 @@ static int s3c2410ts_remove(struct platform_device *pdev)
 	free_irq(ts.irq_tc, ts.input);
 	del_timer_sync(&touch_timer);
 
-	clk_disable(ts.clock);
+	clk_disable_unprepare(ts.clock);
 	clk_put(ts.clock);
 
 	input_unregister_device(ts.input);
diff --git a/drivers/input/touchscreen/zforce_ts.c b/drivers/input/touchscreen/zforce_ts.c
index feea85b52fa8..8ba48f5eff7b 100644
--- a/drivers/input/touchscreen/zforce_ts.c
+++ b/drivers/input/touchscreen/zforce_ts.c
@@ -29,6 +29,8 @@
 #include <linux/sysfs.h>
 #include <linux/input/mt.h>
 #include <linux/platform_data/zforce_ts.h>
+#include <linux/regulator/consumer.h>
+#include <linux/delay.h>
 #include <linux/of.h>
 #include <linux/of_gpio.h>
 
@@ -117,6 +119,8 @@ struct zforce_ts {
 	const struct zforce_ts_platdata *pdata;
 	char			phys[32];
 
+	struct regulator	*reg_vdd;
+
 	bool			suspending;
 	bool			suspended;
 	bool			boot_complete;
@@ -690,6 +694,11 @@ static void zforce_reset(void *data)
 	struct zforce_ts *ts = data;
 
 	gpio_set_value(ts->pdata->gpio_rst, 0);
+
+	udelay(10);
+
+	if (!IS_ERR(ts->reg_vdd))
+		regulator_disable(ts->reg_vdd);
 }
 
 static struct zforce_ts_platdata *zforce_parse_dt(struct device *dev)
@@ -765,10 +774,32 @@ static int zforce_probe(struct i2c_client *client,
 		return ret;
 	}
 
+	ts->reg_vdd = devm_regulator_get_optional(&client->dev, "vdd");
+	if (IS_ERR(ts->reg_vdd)) {
+		ret = PTR_ERR(ts->reg_vdd);
+		if (ret == -EPROBE_DEFER)
+			return ret;
+	} else {
+		ret = regulator_enable(ts->reg_vdd);
+		if (ret)
+			return ret;
+
+		/*
+		 * according to datasheet add 100us grace time after regular
+		 * regulator enable delay.
+		 */
+		udelay(100);
+	}
+
 	ret = devm_add_action(&client->dev, zforce_reset, ts);
 	if (ret) {
 		dev_err(&client->dev, "failed to register reset action, %d\n",
 			ret);
+
+		/* hereafter the regulator will be disabled by the action */
+		if (!IS_ERR(ts->reg_vdd))
+			regulator_disable(ts->reg_vdd);
+
 		return ret;
 	}