Merge remote-tracking branch 'atmel-maxtouch/maxtouch-v3.10' into android-3.10-bringup

Change-Id: Iea94511ceb93f68a94a9e57d5651c1e01dfe6f71

4 files changed, 2729 insertions, 632 deletions

diff --git a/Documentation/devicetree/bindings/input/atmel,maxtouch.txt b/Documentation/devicetree/bindings/input/atmel,maxtouch.txt
new file mode 100644
index 00000000000..6319f07bfbc
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/atmel,maxtouch.txt
@@ -0,0 +1,25 @@
+Atmel maXTouch touchscreen/touchpad
+
+Required properties:
+- compatible:
+    atmel,maxtouch
+
+- reg: The I2C address of the device
+
+- interrupts: The sink for the touch controller CHG/IRQ output
+    See ../interrupt-controller/interrupts.txt
+
+Optional properties for maXTouch device:
+
+- linux,gpio-keymap: An array of up to 4 entries indicating the Linux
+    keycode generated by each GPIO. Linux keycodes are defined in
+    <dt-bindings/input/input.h>.
+
+Example:
+
+	touch@4b {
+		compatible = "atmel,maxtouch";
+		reg = <0x4b>;
+		interrupt-parent = <&gpio>;
+		interrupts = <TEGRA_GPIO(W, 3) IRQ_TYPE_LEVEL_LOW>;
+	};
diff --git a/arch/arm/mach-s5pv210/mach-goni.c b/arch/arm/mach-s5pv210/mach-goni.c
index 30b24ad84f4..8ebc41a7243 100644
--- a/arch/arm/mach-s5pv210/mach-goni.c
+++ b/arch/arm/mach-s5pv210/mach-goni.c
@@ -239,14 +239,6 @@ static void __init goni_radio_init(void)
 
 /* TSP */
 static struct mxt_platform_data qt602240_platform_data = {
-	.x_line		= 17,
-	.y_line		= 11,
-	.x_size		= 800,
-	.y_size		= 480,
-	.blen		= 0x21,
-	.threshold	= 0x28,
-	.voltage	= 2800000,              /* 2.8V */
-	.orient		= MXT_DIAGONAL,
 	.irqflags	= IRQF_TRIGGER_FALLING,
 };
 
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index 59aa24002c7..c4249f8b5ba 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -2,6 +2,9 @@
  * 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>
  *
  * This program is free software; you can redistribute  it and/or modify it
@@ -13,40 +16,31 @@
 
 #include <linux/module.h>
 #include <linux/init.h>
+#include <linux/completion.h>
 #include <linux/delay.h>
 #include <linux/firmware.h>
 #include <linux/i2c.h>
 #include <linux/i2c/atmel_mxt_ts.h>
 #include <linux/input/mt.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/of.h>
 #include <linux/slab.h>
+#include <linux/regulator/consumer.h>
+#include <linux/gpio.h>
 
-/* Version */
-#define MXT_VER_20		20
-#define MXT_VER_21		21
-#define MXT_VER_22		22
-
-/* Slave addresses */
-#define MXT_APP_LOW		0x4a
-#define MXT_APP_HIGH		0x4b
-#define MXT_BOOT_LOW		0x24
-#define MXT_BOOT_HIGH		0x25
+#ifdef CONFIG_OF
+#include <linux/of_gpio.h>
+#endif
 
-/* Firmware */
-#define MXT_FW_NAME		"maxtouch.fw"
+/* Configuration file */
+#define MXT_CFG_MAGIC		"OBP_RAW V1"
 
 /* Registers */
-#define MXT_INFO		0x00
-#define MXT_FAMILY_ID		0x00
-#define MXT_VARIANT_ID		0x01
-#define MXT_VERSION		0x02
-#define MXT_BUILD		0x03
-#define MXT_MATRIX_X_SIZE	0x04
-#define MXT_MATRIX_Y_SIZE	0x05
-#define MXT_OBJECT_NUM		0x06
 #define MXT_OBJECT_START	0x07
-
 #define MXT_OBJECT_SIZE		6
+#define MXT_INFO_CHECKSUM_SIZE	3
+#define MXT_MAX_BLOCK_WRITE	255
 
 /* Object types */
 #define MXT_DEBUG_DIAGNOSTIC_T37	37
@@ -76,6 +70,11 @@
 #define MXT_SPT_DIGITIZER_T43		43
 #define MXT_SPT_MESSAGECOUNT_T44	44
 #define MXT_SPT_CTECONFIG_T46		46
+#define MXT_PROCI_ACTIVE_STYLUS_T63	63
+#define MXT_TOUCH_MULTITOUCHSCREEN_T100 100
+
+/* MXT_GEN_MESSAGE_T5 object */
+#define MXT_RPTID_NOMSG		0xff
 
 /* MXT_GEN_COMMAND_T6 field */
 #define MXT_COMMAND_RESET	0
@@ -84,108 +83,102 @@
 #define MXT_COMMAND_REPORTALL	3
 #define MXT_COMMAND_DIAGNOSTIC	5
 
+/* 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;
 
-/* MXT_GEN_ACQUIRE_T8 field */
-#define MXT_ACQUIRE_CHRGTIME	0
-#define MXT_ACQUIRE_TCHDRIFT	2
-#define MXT_ACQUIRE_DRIFTST	3
-#define MXT_ACQUIRE_TCHAUTOCAL	4
-#define MXT_ACQUIRE_SYNC	5
-#define MXT_ACQUIRE_ATCHCALST	6
-#define MXT_ACQUIRE_ATCHCALSTHR	7
+#define MXT_POWER_CFG_RUN		0
+#define MXT_POWER_CFG_DEEPSLEEP		1
 
 /* MXT_TOUCH_MULTI_T9 field */
-#define MXT_TOUCH_CTRL		0
-#define MXT_TOUCH_XORIGIN	1
-#define MXT_TOUCH_YORIGIN	2
-#define MXT_TOUCH_XSIZE		3
-#define MXT_TOUCH_YSIZE		4
-#define MXT_TOUCH_BLEN		6
-#define MXT_TOUCH_TCHTHR	7
-#define MXT_TOUCH_TCHDI		8
-#define MXT_TOUCH_ORIENT	9
-#define MXT_TOUCH_MOVHYSTI	11
-#define MXT_TOUCH_MOVHYSTN	12
-#define MXT_TOUCH_NUMTOUCH	14
-#define MXT_TOUCH_MRGHYST	15
-#define MXT_TOUCH_MRGTHR	16
-#define MXT_TOUCH_AMPHYST	17
-#define MXT_TOUCH_XRANGE_LSB	18
-#define MXT_TOUCH_XRANGE_MSB	19
-#define MXT_TOUCH_YRANGE_LSB	20
-#define MXT_TOUCH_YRANGE_MSB	21
-#define MXT_TOUCH_XLOCLIP	22
-#define MXT_TOUCH_XHICLIP	23
-#define MXT_TOUCH_YLOCLIP	24
-#define MXT_TOUCH_YHICLIP	25
-#define MXT_TOUCH_XEDGECTRL	26
-#define MXT_TOUCH_XEDGEDIST	27
-#define MXT_TOUCH_YEDGECTRL	28
-#define MXT_TOUCH_YEDGEDIST	29
-#define MXT_TOUCH_JUMPLIMIT	30
+#define MXT_T9_ORIENT		9
+#define MXT_T9_RANGE		18
 
-/* MXT_PROCI_GRIPFACE_T20 field */
-#define MXT_GRIPFACE_CTRL	0
-#define MXT_GRIPFACE_XLOGRIP	1
-#define MXT_GRIPFACE_XHIGRIP	2
-#define MXT_GRIPFACE_YLOGRIP	3
-#define MXT_GRIPFACE_YHIGRIP	4
-#define MXT_GRIPFACE_MAXTCHS	5
-#define MXT_GRIPFACE_SZTHR1	7
-#define MXT_GRIPFACE_SZTHR2	8
-#define MXT_GRIPFACE_SHPTHR1	9
-#define MXT_GRIPFACE_SHPTHR2	10
-#define MXT_GRIPFACE_SUPEXTTO	11
+/* MXT_TOUCH_MULTI_T9 status */
+#define MXT_T9_UNGRIP		(1 << 0)
+#define MXT_T9_SUPPRESS		(1 << 1)
+#define MXT_T9_AMP		(1 << 2)
+#define MXT_T9_VECTOR		(1 << 3)
+#define MXT_T9_MOVE		(1 << 4)
+#define MXT_T9_RELEASE		(1 << 5)
+#define MXT_T9_PRESS		(1 << 6)
+#define MXT_T9_DETECT		(1 << 7)
 
-/* MXT_PROCI_NOISE field */
-#define MXT_NOISE_CTRL		0
-#define MXT_NOISE_OUTFLEN	1
-#define MXT_NOISE_GCAFUL_LSB	3
-#define MXT_NOISE_GCAFUL_MSB	4
-#define MXT_NOISE_GCAFLL_LSB	5
-#define MXT_NOISE_GCAFLL_MSB	6
-#define MXT_NOISE_ACTVGCAFVALID	7
-#define MXT_NOISE_NOISETHR	8
-#define MXT_NOISE_FREQHOPSCALE	10
-#define MXT_NOISE_FREQ0		11
-#define MXT_NOISE_FREQ1		12
-#define MXT_NOISE_FREQ2		13
-#define MXT_NOISE_FREQ3		14
-#define MXT_NOISE_FREQ4		15
-#define MXT_NOISE_IDLEGCAFVALID	16
+struct t9_range {
+	u16 x;
+	u16 y;
+} __packed;
+
+/* MXT_TOUCH_MULTI_T9 orient */
+#define MXT_T9_ORIENT_SWITCH	(1 << 0)
 
 /* MXT_SPT_COMMSCONFIG_T18 */
 #define MXT_COMMS_CTRL		0
 #define MXT_COMMS_CMD		1
-
-/* MXT_SPT_CTECONFIG_T28 field */
-#define MXT_CTE_CTRL		0
-#define MXT_CTE_CMD		1
-#define MXT_CTE_MODE		2
-#define MXT_CTE_IDLEGCAFDEPTH	3
-#define MXT_CTE_ACTVGCAFDEPTH	4
-#define MXT_CTE_VOLTAGE		5
-
-#define MXT_VOLTAGE_DEFAULT	2700000
-#define MXT_VOLTAGE_STEP	10000
+#define MXT_COMMS_RETRIGEN      (1 << 6)
 
 /* Define for MXT_GEN_COMMAND_T6 */
 #define MXT_BOOT_VALUE		0xa5
+#define MXT_RESET_VALUE		0x01
 #define MXT_BACKUP_VALUE	0x55
-#define MXT_BACKUP_TIME		50	/* msec */
-#define MXT_RESET_TIME		200	/* msec */
 
-#define MXT_FWRESET_TIME	175	/* msec */
+/* Define for MXT_PROCI_TOUCHSUPPRESSION_T42 */
+#define MXT_T42_MSG_TCHSUP	(1 << 0)
+
+/* T47 Stylus */
+#define MXT_TOUCH_MAJOR_T47_STYLUS	1
+
+/* T63 Stylus */
+#define MXT_T63_STYLUS_PRESS	(1 << 0)
+#define MXT_T63_STYLUS_RELEASE	(1 << 1)
+#define MXT_T63_STYLUS_MOVE		(1 << 2)
+#define MXT_T63_STYLUS_SUPPRESS	(1 << 3)
+
+#define MXT_T63_STYLUS_DETECT	(1 << 4)
+#define MXT_T63_STYLUS_TIP		(1 << 5)
+#define MXT_T63_STYLUS_ERASER	(1 << 6)
+#define MXT_T63_STYLUS_BARREL	(1 << 7)
+
+#define MXT_T63_STYLUS_PRESSURE_MASK	0x3F
+
+/* 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	(1 << 5)
 
-/* MXT_SPT_GPIOPWM_T19 field */
-#define MXT_GPIO0_MASK		0x04
-#define MXT_GPIO1_MASK		0x08
-#define MXT_GPIO2_MASK		0x10
-#define MXT_GPIO3_MASK		0x20
+#define MXT_T100_TCHAUX_VECT	(1 << 0)
+#define MXT_T100_TCHAUX_AMPL	(1 << 1)
+#define MXT_T100_TCHAUX_AREA	(1 << 2)
+
+#define MXT_T100_DETECT		(1 << 7)
+#define MXT_T100_TYPE_MASK	0x70
+#define MXT_T100_TYPE_STYLUS	0x20
+
+/* Delay times */
+#define MXT_BACKUP_TIME		50	/* msec */
+#define MXT_RESET_TIME		200	/* msec */
+#define MXT_RESET_TIMEOUT	3000	/* msec */
+#define MXT_CRC_TIMEOUT		1000	/* msec */
+#define MXT_FW_RESET_TIME	3000	/* msec */
+#define MXT_FW_CHG_TIMEOUT	300	/* msec */
+#define MXT_WAKEUP_TIME		25	/* msec */
+#define MXT_REGULATOR_DELAY	150	/* msec */
+#define MXT_CHG_DELAY	        100	/* msec */
+#define MXT_POWERON_DELAY	150	/* msec */
 
 /* Command to unlock bootloader */
 #define MXT_UNLOCK_CMD_MSB	0xaa
@@ -199,27 +192,16 @@
 #define MXT_FRAME_CRC_PASS	0x04
 #define MXT_APP_CRC_FAIL	0x40	/* valid 7 8 bit only */
 #define MXT_BOOT_STATUS_MASK	0x3f
-
-/* Touch status */
-#define MXT_UNGRIP		(1 << 0)
-#define MXT_SUPPRESS		(1 << 1)
-#define MXT_AMP			(1 << 2)
-#define MXT_VECTOR		(1 << 3)
-#define MXT_MOVE		(1 << 4)
-#define MXT_RELEASE		(1 << 5)
-#define MXT_PRESS		(1 << 6)
-#define MXT_DETECT		(1 << 7)
-
-/* Touch orient bits */
-#define MXT_XY_SWITCH		(1 << 0)
-#define MXT_X_INVERT		(1 << 1)
-#define MXT_Y_INVERT		(1 << 2)
+#define MXT_BOOT_EXTENDED_ID	(1 << 5)
+#define MXT_BOOT_ID_MASK	0x1f
 
 /* Touchscreen absolute values */
 #define MXT_MAX_AREA		0xff
 
 #define MXT_PIXELS_PER_MM	20
 
+#define DEBUG_MSG_MAX		200
+
 struct mxt_info {
 	u8 family_id;
 	u8 variant_id;
@@ -233,16 +215,11 @@ struct mxt_info {
 struct mxt_object {
 	u8 type;
 	u16 start_address;
-	u8 size;		/* Size of each instance - 1 */
-	u8 instances;		/* Number of instances - 1 */
+	u8 size_minus_one;
+	u8 instances_minus_one;
 	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;
@@ -250,20 +227,89 @@ struct mxt_data {
 	char phys[64];		/* device physical location */
 	const struct mxt_platform_data *pdata;
 	struct mxt_object *object_table;
-	struct mxt_info info;
-	bool is_tp;
-
+	struct mxt_info *info;
+	void *raw_info_block;
 	unsigned int irq;
 	unsigned int max_x;
 	unsigned int max_y;
+	bool in_bootloader;
+	u16 mem_size;
+	u8 t100_aux_ampl;
+	u8 t100_aux_area;
+	u8 t100_aux_vect;
+	struct bin_attribute mem_access_attr;
+	bool debug_enabled;
+	bool debug_v2_enabled;
+	u8 *debug_msg_data;
+	u16 debug_msg_count;
+	struct bin_attribute debug_msg_attr;
+	struct mutex debug_msg_lock;
+	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;
+	u8 num_stylusids;
+	unsigned long t15_keystatus;
+	bool use_retrigen_workaround;
+	bool use_regulator;
+	struct regulator *reg_vdd;
+	struct regulator *reg_avdd;
+	char *fw_name;
+	char *cfg_name;
 
 	/* 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 T15_reportid_min;
+	u8 T15_reportid_max;
+	u16 T18_address;
 	u8 T19_reportid;
+	u8 T42_reportid_min;
+	u8 T42_reportid_max;
+	u16 T44_address;
+	u8 T48_reportid;
+	u8 T63_reportid_min;
+	u8 T63_reportid_max;
+	u8 T100_reportid_min;
+	u8 T100_reportid_max;
+
+	/* for fw update in bootloader */
+	struct completion bl_completion;
+
+	/* for reset handling */
+	struct completion reset_completion;
+
+	/* for config update handling */
+	struct completion crc_completion;
+
+	/* Indicates whether device is in suspend */
+	bool suspended;
+
+	/* Indicates whether device is updating configuration */
+	bool updating_config;
 };
 
+static size_t mxt_obj_size(const struct mxt_object *obj)
+{
+	return obj->size_minus_one + 1;
+}
+
+static size_t mxt_obj_instances(const struct mxt_object *obj)
+{
+	return obj->instances_minus_one + 1;
+}
+
 static bool mxt_object_readable(unsigned int type)
 {
 	switch (type) {
@@ -297,98 +343,365 @@ static bool mxt_object_readable(unsigned int type)
 	}
 }
 
-static bool mxt_object_writable(unsigned int type)
+static void mxt_dump_message(struct mxt_data *data, u8 *message)
 {
-	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;
+	dev_dbg(&data->client->dev, "MXT MSG: %*ph\n",
+		       data->T5_msg_size, message);
+}
+
+static void mxt_debug_msg_enable(struct mxt_data *data)
+{
+	struct device *dev = &data->client->dev;
+
+	if (data->debug_v2_enabled)
+		return;
+
+	mutex_lock(&data->debug_msg_lock);
+
+	data->debug_msg_data = kcalloc(DEBUG_MSG_MAX,
+				data->T5_msg_size, GFP_KERNEL);
+	if (!data->debug_msg_data)
+		return;
+
+	data->debug_v2_enabled = true;
+	mutex_unlock(&data->debug_msg_lock);
+
+	dev_info(dev, "Enabled message output\n");
+}
+
+static void mxt_debug_msg_disable(struct mxt_data *data)
+{
+	struct device *dev = &data->client->dev;
+
+	if (!data->debug_v2_enabled)
+		return;
+
+	dev_info(dev, "disabling message output\n");
+	data->debug_v2_enabled = false;
+
+	mutex_lock(&data->debug_msg_lock);
+	kfree(data->debug_msg_data);
+	data->debug_msg_data = NULL;
+	data->debug_msg_count = 0;
+	mutex_unlock(&data->debug_msg_lock);
+	dev_info(dev, "Disabled message output\n");
+}
+
+static void mxt_debug_msg_add(struct mxt_data *data, u8 *msg)
+{
+	struct device *dev = &data->client->dev;
+
+	mutex_lock(&data->debug_msg_lock);
+
+	if (!data->debug_msg_data) {
+		dev_err(dev, "No buffer!\n");
+		return;
+	}
+
+	if (data->debug_msg_count < DEBUG_MSG_MAX) {
+		memcpy(data->debug_msg_data +
+		       data->debug_msg_count * data->T5_msg_size,
+		       msg,
+		       data->T5_msg_size);
+		data->debug_msg_count++;
+	} else {
+		dev_dbg(dev, "Discarding %u messages\n", data->debug_msg_count);
+		data->debug_msg_count = 0;
+	}
+
+	mutex_unlock(&data->debug_msg_lock);
+
+	sysfs_notify(&data->client->dev.kobj, NULL, "debug_notify");
+}
+
+static ssize_t mxt_debug_msg_write(struct file *filp, struct kobject *kobj,
+	struct bin_attribute *bin_attr, char *buf, loff_t off,
+	size_t count)
+{
+	return -EIO;
+}
+
+static ssize_t mxt_debug_msg_read(struct file *filp, struct kobject *kobj,
+	struct bin_attribute *bin_attr, char *buf, loff_t off, size_t bytes)
+{
+	struct device *dev = container_of(kobj, struct device, kobj);
+	struct mxt_data *data = dev_get_drvdata(dev);
+	int count;
+	size_t bytes_read;
+
+	if (!data->debug_msg_data) {
+		dev_err(dev, "No buffer!\n");
+		return 0;
+	}
+
+	count = bytes / data->T5_msg_size;
+
+	if (count > DEBUG_MSG_MAX)
+		count = DEBUG_MSG_MAX;
+
+	mutex_lock(&data->debug_msg_lock);
+
+	if (count > data->debug_msg_count)
+		count = data->debug_msg_count;
+
+	bytes_read = count * data->T5_msg_size;
+
+	memcpy(buf, data->debug_msg_data, bytes_read);
+	data->debug_msg_count = 0;
+
+	mutex_unlock(&data->debug_msg_lock);
+
+	return bytes_read;
+}
+
+static int mxt_debug_msg_init(struct mxt_data *data)
+{
+	sysfs_bin_attr_init(&data->debug_msg_attr);
+	data->debug_msg_attr.attr.name = "debug_msg";
+	data->debug_msg_attr.attr.mode = 0666;
+	data->debug_msg_attr.read = mxt_debug_msg_read;
+	data->debug_msg_attr.write = mxt_debug_msg_write;
+	data->debug_msg_attr.size = data->T5_msg_size * DEBUG_MSG_MAX;
+
+	if (sysfs_create_bin_file(&data->client->dev.kobj,
+				  &data->debug_msg_attr) < 0) {
+		dev_err(&data->client->dev, "Failed to create %s\n",
+			data->debug_msg_attr.attr.name);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static void mxt_debug_msg_remove(struct mxt_data *data)
+{
+	if (data->debug_msg_attr.attr.name)
+		sysfs_remove_bin_file(&data->client->dev.kobj,
+				      &data->debug_msg_attr);
+}
+
+static int mxt_wait_for_completion(struct mxt_data *data,
+				   struct completion *comp,
+				   unsigned int timeout_ms)
+{
+	struct device *dev = &data->client->dev;
+	unsigned long timeout = msecs_to_jiffies(timeout_ms);
+	long ret;
+
+	ret = wait_for_completion_interruptible_timeout(comp, timeout);
+	if (ret < 0) {
+		return ret;
+	} else if (ret == 0) {
+		dev_err(dev, "Wait for completion timed out.\n");
+		return -ETIMEDOUT;
+	}
+	return 0;
+}
+
+static int mxt_bootloader_read(struct mxt_data *data,
+			       u8 *val, unsigned int count)
+{
+	int ret;
+	struct i2c_msg msg;
+
+	msg.addr = data->bootloader_addr;
+	msg.flags = data->client->flags & I2C_M_TEN;
+	msg.flags |= I2C_M_RD;
+	msg.len = count;
+	msg.buf = val;
+
+	ret = i2c_transfer(data->client->adapter, &msg, 1);
+	if (ret == 1) {
+		ret = 0;
+	} else {
+		ret = ret < 0 ? ret : -EIO;
+		dev_err(&data->client->dev, "%s: i2c recv failed (%d)\n",
+			__func__, ret);
+	}
+
+	return ret;
+}
+
+static int mxt_bootloader_write(struct mxt_data *data,
+				const u8 * const val, unsigned int count)
+{
+	int ret;
+	struct i2c_msg msg;
+
+	msg.addr = data->bootloader_addr;
+	msg.flags = data->client->flags & I2C_M_TEN;
+	msg.len = count;
+	msg.buf = (u8 *)val;
+
+	ret = i2c_transfer(data->client->adapter, &msg, 1);
+	if (ret == 1) {
+		ret = 0;
+	} else {
+		ret = ret < 0 ? ret : -EIO;
+		dev_err(&data->client->dev, "%s: i2c send failed (%d)\n",
+			__func__, ret);
+	}
+
+	return ret;
+}
+
+static int mxt_lookup_bootloader_address(struct mxt_data *data, bool retry)
+{
+	u8 appmode = data->client->addr;
+	u8 bootloader;
+	u8 family_id = data->info ? data->info->family_id : 0;
+
+	switch (appmode) {
+	case 0x4a:
+	case 0x4b:
+		/* Chips after 1664S use different scheme */
+		if (retry || family_id >= 0xa2) {
+			bootloader = appmode - 0x24;
+			break;
+		}
+		/* Fall through for normal case */
+	case 0x4c:
+	case 0x4d:
+	case 0x5a:
+	case 0x5b:
+		bootloader = appmode - 0x26;
+		break;
+
 	default:
-		return false;
+		dev_err(&data->client->dev,
+			"Appmode i2c address 0x%02x not found\n",
+			appmode);
+		return -EINVAL;
 	}
+
+	data->bootloader_addr = bootloader;
+	return 0;
+}
+
+static int mxt_probe_bootloader(struct mxt_data *data, bool alt_address)
+{
+	struct device *dev = &data->client->dev;
+	int error;
+	u8 val;
+	bool crc_failure;
+
+	error = mxt_lookup_bootloader_address(data, alt_address);
+	if (error)
+		return error;
+
+	error = mxt_bootloader_read(data, &val, 1);
+	if (error)
+		return error;
+
+	/* 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 void mxt_dump_message(struct device *dev,
-			     struct mxt_message *message)
+static u8 mxt_get_bootloader_version(struct mxt_data *data, u8 val)
 {
-	dev_dbg(dev, "reportid: %u\tmessage: %*ph\n",
-		message->reportid, 7, message->message);
+	struct device *dev = &data->client->dev;
+	u8 buf[3];
+
+	if (val & MXT_BOOT_EXTENDED_ID) {
+		if (mxt_bootloader_read(data, &buf[0], 3) != 0) {
+			dev_err(dev, "%s: i2c failure\n", __func__);
+			return val;
+		}
+
+		dev_dbg(dev, "Bootloader ID:%d Version:%d\n", buf[1], buf[2]);
+
+		return buf[0];
+	} else {
+		dev_dbg(dev, "Bootloader ID:%d\n", val & MXT_BOOT_ID_MASK);
+
+		return val;
+	}
 }
 
-static int mxt_check_bootloader(struct i2c_client *client,
-				     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 (i2c_master_recv(client, &val, 1) != 1) {
-		dev_err(&client->dev, "%s: i2c recv failed\n", __func__);
-		return -EIO;
+	if (wait) {
+		/*
+		 * In application update mode, the interrupt
+		 * line signals state transitions. We must wait for the
+		 * CHG assertion before reading the status byte.
+		 * Once the status byte has been read, the line is deasserted.
+		 */
+		ret = mxt_wait_for_completion(data, &data->bl_completion,
+					      MXT_FW_CHG_TIMEOUT);
+		if (ret) {
+			/*
+			 * TODO: handle -ERESTARTSYS better by terminating
+			 * fw update process before returning to userspace
+			 * by writing length 0x000 to device (iff we are in
+			 * WAITING_FRAME_DATA state).
+			 */
+			dev_err(dev, "Update wait error %d\n", ret);
+			return ret;
+		}
 	}
 
+	ret = mxt_bootloader_read(data, &val, 1);
+	if (ret)
+		return ret;
+
+	if (state == MXT_WAITING_BOOTLOAD_CMD)
+		val = mxt_get_bootloader_version(data, val);
+
 	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:
-		if (val == MXT_FRAME_CRC_CHECK)
+		if (val == MXT_FRAME_CRC_CHECK) {
 			goto recheck;
+		} else if (val == MXT_FRAME_CRC_FAIL) {
+			dev_err(dev, "Bootloader CRC fail\n");
+			return -EINVAL;
+		}
 		break;
 	default:
 		return -EINVAL;
 	}
 
 	if (val != state) {
-		dev_err(&client->dev, "Unvalid bootloader mode state\n");
+		dev_err(dev, "Invalid bootloader state %02X != %02X\n",
+			val, state);
 		return -EINVAL;
 	}
 
 	return 0;
 }
 
-static int mxt_unlock_bootloader(struct i2c_client *client)
+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 (i2c_master_send(client, buf, 2) != 2) {
-		dev_err(&client->dev, "%s: i2c send failed\n", __func__);
-		return -EIO;
+	if (unlock) {
+		buf[0] = MXT_UNLOCK_CMD_LSB;
+		buf[1] = MXT_UNLOCK_CMD_MSB;
+	} else {
+		buf[0] = 0x01;
+		buf[1] = 0x01;
 	}
 
-	return 0;
-}
-
-static int mxt_fw_write(struct i2c_client *client,
-			     const u8 *data, unsigned int frame_size)
-{
-	if (i2c_master_send(client, data, frame_size) != frame_size) {
-		dev_err(&client->dev, "%s: i2c send failed\n", __func__);
-		return -EIO;
-	}
+	ret = mxt_bootloader_write(data, buf, 2);
+	if (ret)
+		return ret;
 
 	return 0;
 }
@@ -399,6 +712,7 @@ static int __mxt_read_reg(struct i2c_client *client,
 	struct i2c_msg xfer[2];
 	u8 buf[2];
 	int ret;
+	bool retry = false;
 
 	buf[0] = reg & 0xff;
 	buf[1] = (reg >> 8) & 0xff;
@@ -415,22 +729,22 @@ static int __mxt_read_reg(struct i2c_client *client,
 	xfer[1].len = len;
 	xfer[1].buf = val;
 
-	ret = i2c_transfer(client->adapter, xfer, 2);
-	if (ret == 2) {
-		ret = 0;
-	} else {
-		if (ret >= 0)
-			ret = -EIO;
-		dev_err(&client->dev, "%s: i2c transfer failed (%d)\n",
-			__func__, ret);
+retry_read:
+	ret = i2c_transfer(client->adapter, xfer, ARRAY_SIZE(xfer));
+	if (ret != ARRAY_SIZE(xfer)) {
+		if (!retry) {
+			dev_dbg(&client->dev, "%s: i2c retry\n", __func__);
+			msleep(MXT_WAKEUP_TIME);
+			retry = true;
+			goto retry_read;
+		} else {
+			dev_err(&client->dev, "%s: i2c transfer failed (%d)\n",
+				__func__, ret);
+			return -EIO;
+		}
 	}
 
-	return ret;
-}
-
-static int mxt_read_reg(struct i2c_client *client, u16 reg, u8 *val)
-{
-	return __mxt_read_reg(client, reg, 1, val);
+	return 0;
 }
 
 static int __mxt_write_reg(struct i2c_client *client, u16 reg, u16 len,
@@ -439,6 +753,7 @@ static int __mxt_write_reg(struct i2c_client *client, u16 reg, u16 len,
 	u8 *buf;
 	size_t count;
 	int ret;
+	bool retry = false;
 
 	count = len + 2;
 	buf = kmalloc(count, GFP_KERNEL);
@@ -449,14 +764,21 @@ static int __mxt_write_reg(struct i2c_client *client, u16 reg, u16 len,
 	buf[1] = (reg >> 8) & 0xff;
 	memcpy(&buf[2], val, len);
 
+retry_write:
 	ret = i2c_master_send(client, buf, count);
-	if (ret == count) {
-		ret = 0;
-	} else {
-		if (ret >= 0)
+	if (ret != count) {
+		if (!retry) {
+			dev_dbg(&client->dev, "%s: i2c retry\n", __func__);
+			msleep(MXT_WAKEUP_TIME);
+			retry = true;
+			goto retry_write;
+		} else {
+			dev_err(&client->dev, "%s: i2c send failed (%d)\n",
+				__func__, ret);
 			ret = -EIO;
-		dev_err(&client->dev, "%s: i2c send failed (%d)\n",
-			__func__, ret);
+		}
+	} else {
+		ret = 0;
 	}
 
 	kfree(buf);
@@ -474,298 +796,1050 @@ mxt_get_object(struct mxt_data *data, u8 type)
 	struct mxt_object *object;
 	int i;
 
-	for (i = 0; i < data->info.object_num; i++) {
+	for (i = 0; i < data->info->object_num; i++) {
 		object = data->object_table + i;
 		if (object->type == type)
 			return object;
 	}
 
-	dev_err(&data->client->dev, "Invalid object type\n");
+	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;
+	struct device *dev = &data->client->dev;
+	u8 status = msg[1];
+	u32 crc = msg[2] | (msg[3] << 8) | (msg[4] << 16);
 
-	object = mxt_get_object(data, MXT_GEN_MESSAGE_T5);
-	if (!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_read_reg(data->client, reg,
-			sizeof(struct mxt_message), message);
-}
+	complete(&data->crc_completion);
 
-static int mxt_write_object(struct mxt_data *data,
-				 u8 type, u8 offset, u8 val)
-{
-	struct mxt_object *object;
-	u16 reg;
+	/* Detect reset */
+	if (status & MXT_T6_STATUS_RESET)
+		complete(&data->reset_completion);
 
-	object = mxt_get_object(data, type);
-	if (!object || offset >= object->size + 1)
-		return -EINVAL;
+	/* 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" : "");
 
-	reg = object->start_address;
-	return mxt_write_reg(data->client, reg + offset, val);
+	/* 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;
 	bool button;
 	int i;
 
 	/* Active-low switch */
-	for (i = 0; i < MXT_NUM_GPIO; i++) {
-		if (data->pdata->key_map[i] == KEY_RESERVED)
+	for (i = 0; i < pdata->t19_num_keys; i++) {
+		if (pdata->t19_keymap[i] == KEY_RESERVED)
 			continue;
-		button = !(message->message[0] & MXT_GPIO0_MASK << i);
-		input_report_key(input, data->pdata->key_map[i], button);
+		button = !(message[1] & (1 << i));
+		input_report_key(input, pdata->t19_keymap[i], button);
+	}
+}
+
+static void mxt_input_sync(struct mxt_data *data)
+{
+	if (data->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 pressure;
+	int amplitude;
+	u8 vector;
+	int tool;
+
+	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));
 
-	x = (message->message[1] << 4) | ((message->message[3] >> 4) & 0xf);
-	y = (message->message[2] << 4) | ((message->message[3] & 0xf));
+	/* Handle 10/12 bit switching */
 	if (data->max_x < 1024)
-		x = x >> 2;
+		x >>= 2;
 	if (data->max_y < 1024)
-		y = y >> 2;
+		y >>= 2;
 
-	area = message->message[4];
-	pressure = message->message[5];
+	area = message[5];
+
+	amplitude = message[6];
+	vector = message[7];
 
 	dev_dbg(dev,
-		"[%u] %c%c%c%c%c%c%c%c x: %5u y: %5u area: %3u amp: %3u\n",
+		"[%u] %c%c%c%c%c%c%c%c x: %5u y: %5u area: %3u amp: %3u vector: %02X\n",
 		id,
-		(status & MXT_DETECT) ? 'D' : '.',
-		(status & MXT_PRESS) ? 'P' : '.',
-		(status & MXT_RELEASE) ? 'R' : '.',
-		(status & MXT_MOVE) ? 'M' : '.',
-		(status & MXT_VECTOR) ? 'V' : '.',
-		(status & MXT_AMP) ? 'A' : '.',
-		(status & MXT_SUPPRESS) ? 'S' : '.',
-		(status & MXT_UNGRIP) ? 'U' : '.',
-		x, y, area, pressure);
+		(status & MXT_T9_DETECT) ? 'D' : '.',
+		(status & MXT_T9_PRESS) ? 'P' : '.',
+		(status & MXT_T9_RELEASE) ? 'R' : '.',
+		(status & MXT_T9_MOVE) ? 'M' : '.',
+		(status & MXT_T9_VECTOR) ? 'V' : '.',
+		(status & MXT_T9_AMP) ? 'A' : '.',
+		(status & MXT_T9_SUPPRESS) ? 'S' : '.',
+		(status & MXT_T9_UNGRIP) ? 'U' : '.',
+		x, y, area, amplitude, vector);
 
 	input_mt_slot(input_dev, id);
-	input_mt_report_slot_state(input_dev, MT_TOOL_FINGER,
-				   status & MXT_DETECT);
 
-	if (status & MXT_DETECT) {
+	if (status & MXT_T9_DETECT) {
+		/*
+		 * Multiple bits may be set if the host is slow to read
+		 * the status messages, indicating all the events that
+		 * have happened.
+		 */
+		if (status & MXT_T9_RELEASE) {
+			input_mt_report_slot_state(input_dev,
+						   MT_TOOL_FINGER, 0);
+			mxt_input_sync(data);
+		}
+
+		/* A size of zero indicates touch is from a linked T47 Stylus */
+		if (area == 0) {
+			area = MXT_TOUCH_MAJOR_T47_STYLUS;
+			tool = MT_TOOL_PEN;
+		} else {
+			tool = MT_TOOL_FINGER;
+		}
+
+		/* Touch active */
+		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_PRESSURE, pressure);
+		input_report_abs(input_dev, ABS_MT_PRESSURE, amplitude);
 		input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, area);
+		input_report_abs(input_dev, ABS_MT_ORIENTATION, vector);
+	} else {
+		/* Touch no longer active, close out slot */
+		input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 0);
 	}
+
+	data->update_input = true;
 }
 
-static unsigned mxt_extract_T6_csum(const u8 *csum)
+static void mxt_proc_t100_message(struct mxt_data *data, u8 *message)
 {
-	return csum[0] | (csum[1] << 8) | (csum[2] << 16);
+	struct device *dev = &data->client->dev;
+	struct input_dev *input_dev = data->input_dev;
+	int id;
+	u8 status;
+	int x;
+	int y;
+	int tool;
+
+	id = message[0] - data->T100_reportid_min - 2;
+
+	/* ignore SCRSTATUS events */
+	if (id < 0)
+		return;
+
+	status = message[1];
+	x = (message[3] << 8) | message[2];
+	y = (message[5] << 8) | message[4];
+
+	dev_dbg(dev,
+		"[%u] status:%02X x:%u y:%u area:%02X amp:%02X vec:%02X\n",
+		id,
+		status,
+		x, y,
+		data->t100_aux_area ? message[data->t100_aux_area] : 0,
+		data->t100_aux_ampl ? message[data->t100_aux_ampl] : 0,
+		data->t100_aux_vect ? message[data->t100_aux_vect] : 0);
+
+	input_mt_slot(input_dev, id);
+
+	if (status & MXT_T100_DETECT) {
+		if ((status & MXT_T100_TYPE_MASK) == MXT_T100_TYPE_STYLUS)
+			tool = MT_TOOL_PEN;
+		else
+			tool = MT_TOOL_FINGER;
+
+		/* Touch active */
+		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);
+
+		if (data->t100_aux_ampl)
+			input_report_abs(input_dev, ABS_MT_PRESSURE,
+					 message[data->t100_aux_ampl]);
+
+		if (data->t100_aux_area) {
+			if (tool == MT_TOOL_PEN)
+				input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR,
+						 MXT_TOUCH_MAJOR_T47_STYLUS);
+			else
+				input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR,
+						 message[data->t100_aux_area]);
+		}
+
+		if (data->t100_aux_vect)
+			input_report_abs(input_dev, ABS_MT_ORIENTATION,
+					 message[data->t100_aux_vect]);
+	} else {
+		/* Touch no longer active, close out slot */
+		input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 0);
+	}
+
+	data->update_input = true;
 }
 
-static bool mxt_is_T9_message(struct mxt_data *data, struct mxt_message *msg)
+
+static void mxt_proc_t15_messages(struct mxt_data *data, u8 *msg)
 {
-	u8 id = msg->reportid;
-	return (id >= data->T9_reportid_min && id <= data->T9_reportid_max);
+	struct input_dev *input_dev = data->input_dev;
+	struct device *dev = &data->client->dev;
+	int key;
+	bool curr_state, new_state;
+	bool sync = false;
+	unsigned long keystates = le32_to_cpu(msg[2]);
+
+	for (key = 0; key < data->pdata->t15_num_keys; key++) {
+		curr_state = test_bit(key, &data->t15_keystatus);
+		new_state = test_bit(key, &keystates);
+
+		if (!curr_state && new_state) {
+			dev_dbg(dev, "T15 key press: %u\n", key);
+			__set_bit(key, &data->t15_keystatus);
+			input_event(input_dev, EV_KEY,
+				    data->pdata->t15_keymap[key], 1);
+			sync = true;
+		} else if (curr_state && !new_state) {
+			dev_dbg(dev, "T15 key release: %u\n", key);
+			__clear_bit(key, &data->t15_keystatus);
+			input_event(input_dev, EV_KEY,
+				    data->pdata->t15_keymap[key], 0);
+			sync = true;
+		}
+	}
+
+	if (sync)
+		input_sync(input_dev);
 }
 
-static irqreturn_t mxt_interrupt(int irq, void *dev_id)
+static void mxt_proc_t42_messages(struct mxt_data *data, u8 *msg)
 {
-	struct mxt_data *data = dev_id;
-	struct mxt_message message;
-	const u8 *payload = &message.message[0];
 	struct device *dev = &data->client->dev;
-	u8 reportid;
-	bool update_input = false;
+	u8 status = msg[1];
 
-	do {
-		if (mxt_read_message(data, &message)) {
-			dev_err(dev, "Failed to read message\n");
-			goto end;
-		}
+	if (status & MXT_T42_MSG_TCHSUP)
+		dev_info(dev, "T42 suppress\n");
+	else
+		dev_info(dev, "T42 normal\n");
+}
 
-		reportid = message.reportid;
+static int mxt_proc_t48_messages(struct mxt_data *data, u8 *msg)
+{
+	struct device *dev = &data->client->dev;
+	u8 status, state;
 
-		if (reportid == data->T6_reportid) {
-			u8 status = payload[0];
-			unsigned csum = mxt_extract_T6_csum(&payload[1]);
-			dev_dbg(dev, "Status: %02x Config Checksum: %06x\n",
-				status, csum);
-		} 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);
+	status = msg[1];
+	state  = msg[4];
 
-	if (update_input) {
-		input_mt_report_pointer_emulation(data->input_dev, false);
-		input_sync(data->input_dev);
+	dev_dbg(dev, "T48 state %d status %02X %s%s%s%s%s\n", state, status,
+		status & 0x01 ? "FREQCHG " : "",
+		status & 0x02 ? "APXCHG " : "",
+		status & 0x04 ? "ALGOERR " : "",
+		status & 0x10 ? "STATCHG " : "",
+		status & 0x20 ? "NLVLCHG " : "");
+
+	return 0;
+}
+
+static void mxt_proc_t63_messages(struct mxt_data *data, u8 *msg)
+{
+	struct device *dev = &data->client->dev;
+	struct input_dev *input_dev = data->input_dev;
+	u8 id;
+	u16 x, y;
+	u8 pressure;
+
+	/* stylus slots come after touch slots */
+	id = data->num_touchids + (msg[0] - data->T63_reportid_min);
+
+	if (id < 0 || id > (data->num_touchids + data->num_stylusids)) {
+		dev_err(dev, "invalid stylus id %d, max slot is %d\n",
+			id, data->num_stylusids);
+		return;
+	}
+
+	x = msg[3] | (msg[4] << 8);
+	y = msg[5] | (msg[6] << 8);
+	pressure = msg[7] & MXT_T63_STYLUS_PRESSURE_MASK;
+
+	dev_dbg(dev,
+		"[%d] %c%c%c%c x: %d y: %d pressure: %d stylus:%c%c%c%c\n",
+		id,
+		msg[1] & MXT_T63_STYLUS_SUPPRESS ? 'S' : '.',
+		msg[1] & MXT_T63_STYLUS_MOVE     ? 'M' : '.',
+		msg[1] & MXT_T63_STYLUS_RELEASE  ? 'R' : '.',
+		msg[1] & MXT_T63_STYLUS_PRESS    ? 'P' : '.',
+		x, y, pressure,
+		msg[2] & MXT_T63_STYLUS_BARREL   ? 'B' : '.',
+		msg[2] & MXT_T63_STYLUS_ERASER   ? 'E' : '.',
+		msg[2] & MXT_T63_STYLUS_TIP      ? 'T' : '.',
+		msg[2] & MXT_T63_STYLUS_DETECT   ? 'D' : '.');
+
+	input_mt_slot(input_dev, id);
+
+	if (msg[2] & MXT_T63_STYLUS_DETECT) {
+		input_mt_report_slot_state(input_dev, MT_TOOL_PEN, 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_PRESSURE, pressure);
+	} else {
+		input_mt_report_slot_state(input_dev, MT_TOOL_PEN, 0);
+	}
+
+	input_report_key(input_dev, BTN_STYLUS,
+			 (msg[2] & MXT_T63_STYLUS_ERASER));
+	input_report_key(input_dev, BTN_STYLUS2,
+			 (msg[2] & MXT_T63_STYLUS_BARREL));
+
+	mxt_input_sync(data);
+}
+
+static int mxt_proc_message(struct mxt_data *data, u8 *message)
+{
+	u8 report_id = message[0];
+	bool dump = data->debug_enabled;
+
+	if (report_id == MXT_RPTID_NOMSG)
+		return 0;
+
+	if (report_id == data->T6_reportid) {
+		mxt_proc_t6_messages(data, message);
+	} else if (report_id >= data->T42_reportid_min
+		   && report_id <= data->T42_reportid_max) {
+		mxt_proc_t42_messages(data, message);
+	} else if (report_id == data->T48_reportid) {
+		mxt_proc_t48_messages(data, message);
+	} else if (!data->input_dev || data->suspended) {
+		/*
+		 * Do not report events if input device is not
+		 * yet registered or returning from suspend
+		 */
+		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->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;
+	} else if (report_id >= data->T63_reportid_min
+		   && report_id <= data->T63_reportid_max) {
+		mxt_proc_t63_messages(data, message);
+	} else if (report_id >= data->T15_reportid_min
+		   && report_id <= data->T15_reportid_max) {
+		mxt_proc_t15_messages(data, message);
+	} else {
+		dump = true;
+	}
+
+	if (dump)
+		mxt_dump_message(data, message);
+
+	if (data->debug_v2_enabled)
+		mxt_debug_msg_add(data, message);
+
+	return 1;
+}
+
+static int mxt_read_and_process_messages(struct mxt_data *data, u8 count)
+{
+	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 irqreturn_t mxt_process_messages_t44(struct mxt_data *data)
+{
+	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) {
+		/*
+		 * This condition is caused by the CHG line being configured
+		 * in Mode 0. It results in unnecessary I2C operations but it
+		 * is benign.
+		 */
+		dev_dbg(dev, "Interrupt triggered but zero messages\n");
+		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 int mxt_check_reg_init(struct mxt_data *data)
+static int mxt_process_messages_until_invalid(struct mxt_data *data)
 {
-	const struct mxt_platform_data *pdata = data->pdata;
-	struct mxt_object *object;
 	struct device *dev = &data->client->dev;
-	int index = 0;
-	int i, size;
+	int count, read;
+	u8 tries = 2;
+
+	count = data->max_reportid;
+
+	/* Read messages until we force an invalid */
+	do {
+		read = mxt_read_and_process_messages(data, count);
+		if (read < count)
+			return 0;
+	} while (--tries);
+
+	if (data->update_input) {
+		mxt_input_sync(data);
+		data->update_input = false;
+	}
+
+	dev_err(dev, "CHG pin isn't cleared\n");
+	return -EBUSY;
+}
+
+static irqreturn_t mxt_process_messages(struct mxt_data *data)
+{
+	int total_handled, num_handled;
+	u8 count = data->last_message_count;
+
+	if (count < 1 || count > data->max_reportid)
+		count = 1;
+
+	/* 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;
+}
+
+static irqreturn_t mxt_interrupt(int irq, void *dev_id)
+{
+	struct mxt_data *data = dev_id;
+
+	if (data->in_bootloader) {
+		/* bootloader state transition completion */
+		complete(&data->bl_completion);
+		return IRQ_HANDLED;
+	}
+
+	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,
+			  u8 value, bool wait)
+{
+	u16 reg;
+	u8 command_register;
+	int timeout_counter = 0;
 	int ret;
 
-	if (!pdata->config) {
-		dev_dbg(dev, "No cfg data defined, skipping reg init\n");
+	reg = data->T6_address + cmd_offset;
+
+	ret = mxt_write_reg(data->client, reg, value);
+	if (ret)
+		return ret;
+
+	if (!wait)
 		return 0;
+
+	do {
+		msleep(20);
+		ret = __mxt_read_reg(data->client, reg, 1, &command_register);
+		if (ret)
+			return ret;
+	} while (command_register != 0 && timeout_counter++ <= 100);
+
+	if (timeout_counter > 100) {
+		dev_err(&data->client->dev, "Command failed!\n");
+		return -EIO;
 	}
 
-	for (i = 0; i < data->info.object_num; i++) {
-		object = data->object_table + i;
+	return 0;
+}
+
+static int mxt_soft_reset(struct mxt_data *data)
+{
+	struct device *dev = &data->client->dev;
+	int ret = 0;
+
+	dev_info(dev, "Resetting chip\n");
+
+	INIT_COMPLETION(data->reset_completion);
+
+	ret = mxt_t6_command(data, MXT_COMMAND_RESET, MXT_RESET_VALUE, false);
+	if (ret)
+		return ret;
+
+	ret = mxt_wait_for_completion(data, &data->reset_completion,
+				      MXT_RESET_TIMEOUT);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static void mxt_update_crc(struct mxt_data *data, u8 cmd, u8 value)
+{
+	/*
+	 * On failure, CRC is set to 0 and config will always be
+	 * downloaded.
+	 */
+	data->config_crc = 0;
+	INIT_COMPLETION(data->crc_completion);
+
+	mxt_t6_command(data, cmd, value, true);
+
+	/*
+	 * Wait for crc message. On failure, CRC is set to 0 and config will
+	 * always be downloaded.
+	 */
+	mxt_wait_for_completion(data, &data->crc_completion, MXT_CRC_TIMEOUT);
+}
+
+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;
+}
+
+static int mxt_check_retrigen(struct mxt_data *data)
+{
+	struct i2c_client *client = data->client;
+	struct irq_data *irqd;
+	int error;
+	int val;
+
+	irqd = irq_get_irq_data(data->irq);
+	if (irqd_get_trigger_type(irqd) & IRQF_TRIGGER_LOW)
+		return 0;
+
+	if (data->T18_address) {
+		error = __mxt_read_reg(client,
+				       data->T18_address + MXT_COMMS_CTRL,
+				       1, &val);
+		if (error)
+			return error;
+
+		if (val & MXT_COMMS_RETRIGEN)
+			return 0;
+	}
+
+	dev_warn(&client->dev, "Enabling RETRIGEN workaround\n");
+	data->use_retrigen_workaround = true;
+	return 0;
+}
 
-		if (!mxt_object_writable(object->type))
+static int mxt_prepare_cfg_mem(struct mxt_data *data,
+			       const struct firmware *cfg,
+			       unsigned int data_pos,
+			       unsigned int cfg_start_ofs,
+			       u8 *config_mem,
+			       size_t config_mem_size)
+{
+	struct device *dev = &data->client->dev;
+	struct mxt_object *object;
+	unsigned int type, instance, size, byte_offset;
+	int offset;
+	int ret;
+	int i;
+	u16 reg;
+	u8 val;
+
+	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");
+			return -EINVAL;
+		}
+		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);
+				if (ret != 1) {
+					dev_err(dev, "Bad format in T%d at %d\n",
+						type, i);
+					return -EINVAL;
+				}
+				data_pos += offset;
+			}
 			continue;
+		}
+
+		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);
+		}
 
-		size = (object->size + 1) * (object->instances + 1);
-		if (index + size > pdata->config_length) {
-			dev_err(dev, "Not enough config data!\n");
+		if (instance >= mxt_obj_instances(object)) {
+			dev_err(dev, "Object instances exceeded!\n");
 			return -EINVAL;
 		}
 
-		ret = __mxt_write_reg(data->client, object->start_address,
-				size, &pdata->config[index]);
-		if (ret)
-			return ret;
-		index += size;
+		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 at %d\n",
+					type, i);
+				return -EINVAL;
+			}
+			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);
+				return -EINVAL;
+			}
+		}
 	}
 
 	return 0;
 }
 
-static int mxt_make_highchg(struct mxt_data *data)
+static int mxt_upload_cfg_mem(struct mxt_data *data, unsigned int cfg_start,
+			      u8 *config_mem, size_t config_mem_size)
 {
-	struct device *dev = &data->client->dev;
-	struct mxt_message message;
-	int count = 10;
+	unsigned int byte_offset = 0;
 	int error;
 
-	/* Read dummy message to make high CHG pin */
-	do {
-		error = mxt_read_message(data, &message);
-		if (error)
+	/* Write configuration as blocks */
+	while (byte_offset < config_mem_size) {
+		unsigned int size = config_mem_size - byte_offset;
+
+		if (size > MXT_MAX_BLOCK_WRITE)
+			size = MXT_MAX_BLOCK_WRITE;
+
+		error = __mxt_write_reg(data->client,
+					cfg_start + byte_offset,
+					size, config_mem + byte_offset);
+		if (error) {
+			dev_err(&data->client->dev,
+				"Config write error, ret=%d\n", error);
 			return error;
-	} while (message.reportid != 0xff && --count);
+		}
 
-	if (!count) {
-		dev_err(dev, "CHG pin isn't cleared\n");
-		return -EBUSY;
+		byte_offset += size;
 	}
 
 	return 0;
 }
 
-static void mxt_handle_pdata(struct mxt_data *data)
+static int mxt_init_t7_power_cfg(struct mxt_data *data);
+
+/*
+ * 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;
-	u8 voltage;
+	struct device *dev = &data->client->dev;
+	struct mxt_info cfg_info;
+	int ret;
+	int offset;
+	int data_pos;
+	int i;
+	int cfg_start_ofs;
+	u32 info_crc, config_crc, calculated_crc;
+	u8 *config_mem;
+	size_t config_mem_size;
+
+	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");
+		return -EINVAL;
+	}
 
-	/* Set touchscreen lines */
-	mxt_write_object(data, MXT_TOUCH_MULTI_T9, MXT_TOUCH_XSIZE,
-			pdata->x_line);
-	mxt_write_object(data, MXT_TOUCH_MULTI_T9, MXT_TOUCH_YSIZE,
-			pdata->y_line);
+	data_pos = strlen(MXT_CFG_MAGIC);
 
-	/* Set touchscreen orient */
-	mxt_write_object(data, MXT_TOUCH_MULTI_T9, MXT_TOUCH_ORIENT,
-			pdata->orient);
+	/* 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");
+			return -EINVAL;
+		}
 
-	/* Set touchscreen burst length */
-	mxt_write_object(data, MXT_TOUCH_MULTI_T9,
-			MXT_TOUCH_BLEN, pdata->blen);
+		data_pos += offset;
+	}
+
+	if (cfg_info.family_id != data->info->family_id) {
+		dev_err(dev, "Family ID mismatch!\n");
+		return -EINVAL;
+	}
+
+	if (cfg_info.variant_id != data->info->variant_id) {
+		dev_err(dev, "Variant ID mismatch!\n");
+		return -EINVAL;
+	}
+
+	/* 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");
+		return -EINVAL;
+	}
+	data_pos += offset;
+
+	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");
+		return -EINVAL;
+	}
+	data_pos += offset;
 
-	/* Set touchscreen threshold */
-	mxt_write_object(data, MXT_TOUCH_MULTI_T9,
-			MXT_TOUCH_TCHTHR, pdata->threshold);
+	/*
+	 * 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);
+			return 0;
+		} 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);
+	}
 
-	/* Set touchscreen resolution */
-	mxt_write_object(data, MXT_TOUCH_MULTI_T9,
-			MXT_TOUCH_XRANGE_LSB, (pdata->x_size - 1) & 0xff);
-	mxt_write_object(data, MXT_TOUCH_MULTI_T9,
-			MXT_TOUCH_XRANGE_MSB, (pdata->x_size - 1) >> 8);
-	mxt_write_object(data, MXT_TOUCH_MULTI_T9,
-			MXT_TOUCH_YRANGE_LSB, (pdata->y_size - 1) & 0xff);
-	mxt_write_object(data, MXT_TOUCH_MULTI_T9,
-			MXT_TOUCH_YRANGE_MSB, (pdata->y_size - 1) >> 8);
+	/* 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");
+		return -ENOMEM;
+	}
 
-	/* Set touchscreen voltage */
-	if (pdata->voltage) {
-		if (pdata->voltage < MXT_VOLTAGE_DEFAULT) {
-			voltage = (MXT_VOLTAGE_DEFAULT - pdata->voltage) /
-				MXT_VOLTAGE_STEP;
-			voltage = 0xff - voltage + 1;
-		} else
-			voltage = (pdata->voltage - MXT_VOLTAGE_DEFAULT) /
-				MXT_VOLTAGE_STEP;
+	ret = mxt_prepare_cfg_mem(data, cfg, data_pos, cfg_start_ofs,
+				  config_mem, config_mem_size);
+	if (ret)
+		goto release_mem;
 
-		mxt_write_object(data, MXT_SPT_CTECONFIG_T28,
-				MXT_CTE_VOLTAGE, voltage);
+	/* 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);
+
+	ret = mxt_upload_cfg_mem(data, cfg_start_ofs,
+				 config_mem, config_mem_size);
+	if (ret)
+		goto release_mem;
+
+	mxt_update_crc(data, MXT_COMMAND_BACKUPNV, MXT_BACKUP_VALUE);
+
+	ret = mxt_check_retrigen(data);
+	if (ret)
+		goto release_mem;
+
+	ret = mxt_soft_reset(data);
+	if (ret)
+		goto release_mem;
+
+	dev_info(dev, "Config successfully updated\n");
+
+	/* T7 config may have changed */
+	mxt_init_t7_power_cfg(data);
+
+release_mem:
+	kfree(config_mem);
+	return ret;
 }
 
-static int mxt_get_info(struct mxt_data *data)
+static int mxt_acquire_irq(struct mxt_data *data)
 {
-	struct i2c_client *client = data->client;
-	struct mxt_info *info = &data->info;
 	int error;
 
-	/* Read 7-byte info block starting at address 0 */
-	error = __mxt_read_reg(client, MXT_INFO, sizeof(*info), info);
-	if (error)
-		return error;
+	enable_irq(data->irq);
+
+	if (data->use_retrigen_workaround) {
+		error = mxt_process_messages_until_invalid(data);
+		if (error)
+			return error;
+	}
 
 	return 0;
 }
 
-static int mxt_get_object_table(struct mxt_data *data)
+static void mxt_free_input_device(struct mxt_data *data)
+{
+	if (data->input_dev) {
+		input_unregister_device(data->input_dev);
+		data->input_dev = NULL;
+	}
+}
+
+static void mxt_free_object_table(struct mxt_data *data)
+{
+	mxt_debug_msg_remove(data);
+
+	data->object_table = NULL;
+	data->info = NULL;
+	kfree(data->raw_info_block);
+	data->raw_info_block = 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->T15_reportid_min = 0;
+	data->T15_reportid_max = 0;
+	data->T18_address = 0;
+	data->T19_reportid = 0;
+	data->T42_reportid_min = 0;
+	data->T42_reportid_max = 0;
+	data->T44_address = 0;
+	data->T48_reportid = 0;
+	data->T63_reportid_min = 0;
+	data->T63_reportid_max = 0;
+	data->T100_reportid_min = 0;
+	data->T100_reportid_max = 0;
+	data->max_reportid = 0;
+}
+
+static int mxt_parse_object_table(struct mxt_data *data,
+				  struct mxt_object *object_table)
 {
 	struct i2c_client *client = data->client;
-	size_t table_size;
-	int error;
 	int i;
 	u8 reportid;
-
-	table_size = data->info.object_num * sizeof(struct mxt_object);
-	error = __mxt_read_reg(client, MXT_OBJECT_START, table_size,
-			data->object_table);
-	if (error)
-		return error;
+	u16 end_address;
 
 	/* Valid Report IDs start counting from 1 */
 	reportid = 1;
-	for (i = 0; i < data->info.object_num; i++) {
-		struct mxt_object *object = data->object_table + i;
+	data->mem_size = 0;
+	for (i = 0; i < data->info->object_num; i++) {
+		struct mxt_object *object = object_table + i;
 		u8 min_id, max_id;
 
 		le16_to_cpus(&object->start_address);
@@ -773,7 +1847,7 @@ static int mxt_get_object_table(struct mxt_data *data)
 		if (object->num_report_ids) {
 			min_id = reportid;
 			reportid += object->num_report_ids *
-					(object->instances + 1);
+					mxt_obj_instances(object);
 			max_id = reportid - 1;
 		} else {
 			min_id = 0;
@@ -781,99 +1855,672 @@ static int mxt_get_object_table(struct mxt_data *data)
 		}
 
 		dev_dbg(&data->client->dev,
-			"Type %2d Start %3d Size %3d Instances %2d ReportIDs %3u : %3u\n",
-			object->type, object->start_address, object->size + 1,
-			object->instances + 1, min_id, max_id);
+			"T%u Start:%u Size:%zu Instances:%zu Report IDs:%u-%u\n",
+			object->type, object->start_address,
+			mxt_obj_size(object), mxt_obj_instances(object),
+			min_id, max_id);
 
 		switch (object->type) {
+		case MXT_GEN_MESSAGE_T5:
+			if (data->info->family_id == 0x80 &&
+			    data->info->version < 0x20) {
+				/*
+				 * On mXT224 firmware versions prior to V2.0
+				 * 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;
+			break;
 		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:
+			/* Only handle messages from first T9 instance */
 			data->T9_reportid_min = min_id;
-			data->T9_reportid_max = max_id;
+			data->T9_reportid_max = min_id +
+						object->num_report_ids - 1;
+			data->num_touchids = object->num_report_ids;
+			break;
+		case MXT_TOUCH_KEYARRAY_T15:
+			data->T15_reportid_min = min_id;
+			data->T15_reportid_max = max_id;
+			break;
+		case MXT_SPT_COMMSCONFIG_T18:
+			data->T18_address = object->start_address;
+			break;
+		case MXT_PROCI_TOUCHSUPPRESSION_T42:
+			data->T42_reportid_min = min_id;
+			data->T42_reportid_max = max_id;
+			break;
+		case MXT_SPT_MESSAGECOUNT_T44:
+			data->T44_address = object->start_address;
 			break;
 		case MXT_SPT_GPIOPWM_T19:
 			data->T19_reportid = min_id;
 			break;
+		case MXT_PROCG_NOISESUPPRESSION_T48:
+			data->T48_reportid = min_id;
+			break;
+		case MXT_PROCI_ACTIVE_STYLUS_T63:
+			/* Only handle messages from first T63 instance */
+			data->T63_reportid_min = min_id;
+			data->T63_reportid_max = min_id;
+			data->num_stylusids = 1;
+			break;
+		case 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
+			+ 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");
+		return -EINVAL;
+	}
+
+	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");
+		return -ENOMEM;
 	}
 
 	return 0;
 }
 
-static void mxt_free_object_table(struct mxt_data *data)
+static int mxt_read_info_block(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;
+	struct i2c_client *client = data->client;
+	int error;
+	size_t size;
+	void *id_buf, *buf;
+	uint8_t num_objects;
+	u32 calculated_crc;
+	u8 *crc_ptr;
+
+	/* If info block already allocated, free it */
+	if (data->raw_info_block != NULL)
+		mxt_free_object_table(data);
+
+	/* Read 7-byte ID information block starting at address 0 */
+	size = sizeof(struct mxt_info);
+	id_buf = kzalloc(size, GFP_KERNEL);
+	if (!id_buf) {
+		dev_err(&client->dev, "Failed to allocate memory\n");
+		return -ENOMEM;
+	}
+
+	error = __mxt_read_reg(client, 0, size, id_buf);
+	if (error) {
+		kfree(id_buf);
+		return error;
+	}
+
+	/* Resize buffer to give space for rest of info block */
+	num_objects = ((struct mxt_info *)id_buf)->object_num;
+	size += (num_objects * sizeof(struct mxt_object))
+		+ MXT_INFO_CHECKSUM_SIZE;
+
+	buf = krealloc(id_buf, size, GFP_KERNEL);
+	if (!buf) {
+		dev_err(&client->dev, "Failed to allocate memory\n");
+		error = -ENOMEM;
+		goto err_free_mem;
+	}
+
+	/* Read rest of info block */
+	error = __mxt_read_reg(client, MXT_OBJECT_START,
+			       size - MXT_OBJECT_START,
+			       buf + MXT_OBJECT_START);
+	if (error)
+		goto err_free_mem;
+
+	/* Extract & calculate checksum */
+	crc_ptr = buf + size - MXT_INFO_CHECKSUM_SIZE;
+	data->info_crc = crc_ptr[0] | (crc_ptr[1] << 8) | (crc_ptr[2] << 16);
+
+	calculated_crc = mxt_calculate_crc(buf, 0,
+					   size - MXT_INFO_CHECKSUM_SIZE);
+
+	/*
+	 * CRC mismatch can be caused by data corruption due to I2C comms
+	 * issue or else device is not using Object Based Protocol (eg i2c-hid)
+	 */
+	if ((data->info_crc == 0) || (data->info_crc != calculated_crc)) {
+		dev_err(&client->dev,
+			"Info Block CRC error calculated=0x%06X read=0x%06X\n",
+			calculated_crc, data->info_crc);
+		error = -EIO;
+		goto err_free_mem;
+	}
+
+	data->raw_info_block = buf;
+	data->info = (struct mxt_info *)buf;
+
+	dev_info(&client->dev,
+		 "Family: %u Variant: %u Firmware V%u.%u.%02X Objects: %u\n",
+		 data->info->family_id, data->info->variant_id,
+		 data->info->version >> 4, data->info->version & 0xf,
+		 data->info->build, data->info->object_num);
+
+	/* Parse object table information */
+	error = mxt_parse_object_table(data, buf + MXT_OBJECT_START);
+	if (error) {
+		dev_err(&client->dev, "Error %d parsing object table\n", error);
+		mxt_free_object_table(data);
+		return error;
+	}
+
+	data->object_table = (struct mxt_object *)(buf + MXT_OBJECT_START);
+
+	return 0;
+
+err_free_mem:
+	kfree(buf);
+	return error;
 }
 
-static int mxt_initialize(struct mxt_data *data)
+static void mxt_regulator_enable(struct mxt_data *data)
+{
+	int error;
+
+	gpio_set_value(data->pdata->gpio_reset, 0);
+
+	error = regulator_enable(data->reg_vdd);
+	if (error)
+		return;
+
+	error = regulator_enable(data->reg_avdd);
+	if (error)
+		return;
+
+	msleep(MXT_REGULATOR_DELAY);
+	gpio_set_value(data->pdata->gpio_reset, 1);
+	msleep(MXT_CHG_DELAY);
+
+retry_wait:
+	INIT_COMPLETION(data->bl_completion);
+	data->in_bootloader = true;
+	error = mxt_wait_for_completion(data, &data->bl_completion,
+					MXT_POWERON_DELAY);
+	if (error == -EINTR)
+		goto retry_wait;
+
+	data->in_bootloader = false;
+}
+
+static void mxt_regulator_disable(struct mxt_data *data)
+{
+	regulator_disable(data->reg_vdd);
+	regulator_disable(data->reg_avdd);
+}
+
+static void mxt_probe_regulators(struct mxt_data *data)
+{
+	struct device *dev = &data->client->dev;
+	int error;
+
+	/*
+	 * According to maXTouch power sequencing specification, RESET line
+	 * must be kept low until some time after regulators come up to
+	 * voltage
+	 */
+	if (!gpio_is_valid(data->pdata->gpio_reset)) {
+		dev_dbg(dev, "Must have reset GPIO to use regulator support\n");
+		goto fail;
+	}
+
+	data->reg_vdd = regulator_get(dev, "vdd");
+	if (IS_ERR(data->reg_vdd)) {
+		error = PTR_ERR(data->reg_vdd);
+		dev_err(dev, "Error %d getting vdd regulator\n", error);
+		goto fail;
+	}
+
+	data->reg_avdd = regulator_get(dev, "avdd");
+	if (IS_ERR(data->reg_avdd)) {
+		error = PTR_ERR(data->reg_avdd);
+		dev_err(dev, "Error %d getting avdd regulator\n", error);
+		goto fail_release;
+	}
+
+	data->use_regulator = true;
+	mxt_regulator_enable(data);
+
+	dev_dbg(dev, "Initialised regulators\n");
+	return;
+
+fail_release:
+	regulator_put(data->reg_vdd);
+fail:
+	data->reg_vdd = NULL;
+	data->reg_avdd = NULL;
+	data->use_regulator = false;
+}
+
+static int mxt_read_t9_resolution(struct mxt_data *data)
 {
 	struct i2c_client *client = data->client;
-	struct mxt_info *info = &data->info;
 	int error;
-	u8 val;
+	struct t9_range range;
+	unsigned char orient;
+	struct mxt_object *object;
 
-	error = mxt_get_info(data);
+	object = mxt_get_object(data, MXT_TOUCH_MULTI_T9);
+	if (!object)
+		return -EINVAL;
+
+	error = __mxt_read_reg(client,
+			       object->start_address + MXT_T9_RANGE,
+			       sizeof(range), &range);
 	if (error)
 		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");
+	le16_to_cpus(&range.x);
+	le16_to_cpus(&range.y);
+
+	error =  __mxt_read_reg(client,
+				object->start_address + MXT_T9_ORIENT,
+				1, &orient);
+	if (error)
+		return error;
+
+	/* Handle default values */
+	if (range.x == 0)
+		range.x = 1023;
+
+	if (range.y == 0)
+		range.y = 1023;
+
+	if (orient & MXT_T9_ORIENT_SWITCH) {
+		data->max_x = range.y;
+		data->max_y = range.x;
+	} else {
+		data->max_x = range.x;
+		data->max_y = range.y;
+	}
+
+	dev_dbg(&client->dev,
+		"Touchscreen size X%uY%u\n", data->max_x, data->max_y);
+
+	return 0;
+}
+
+static void mxt_start(struct mxt_data *data);
+static void mxt_stop(struct mxt_data *data);
+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;
 	}
 
-	/* Get object table information */
-	error = mxt_get_object_table(data);
+	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";
+	} else {
+		mt_flags |= INPUT_MT_DIRECT;
+	}
+
+	/* 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->num_touchids + data->num_stylusids;
+	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_abs_params(input_dev, ABS_MT_ORIENTATION,
+			     0, 255, 0, 0);
+
+	/* For T63 active stylus */
+	if (data->T63_reportid_min) {
+		input_set_capability(input_dev, EV_KEY, BTN_STYLUS);
+		input_set_capability(input_dev, EV_KEY, BTN_STYLUS2);
+		input_set_abs_params(input_dev, ABS_MT_TOOL_TYPE,
+			0, MT_TOOL_MAX, 0, 0);
+	}
+
+	/* For T15 key array */
+	if (data->T15_reportid_min) {
+		data->t15_keystatus = 0;
+
+		for (i = 0; i < data->pdata->t15_num_keys; i++)
+			input_set_capability(input_dev, EV_KEY,
+					     data->pdata->t15_keymap[i]);
+	}
+
+	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_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)
-		goto err_free_object_table;
+		return error;
 
-	/* Check register init values */
-	error = mxt_check_reg_init(data);
+	le16_to_cpus(&range_x);
+
+	error = __mxt_read_reg(client,
+			       object->start_address + MXT_T100_YRANGE,
+			       sizeof(range_y), &range_y);
 	if (error)
-		goto err_free_object_table;
+		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;
+
+	/* 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_info(&client->dev,
+		 "T100 Touchscreen size X%uY%u\n", data->max_x, data->max_y);
+
+	return 0;
+}
+
+static int mxt_initialize_t100_input_device(struct mxt_data *data)
+{
+	struct device *dev = &data->client->dev;
+	struct input_dev *input_dev;
+	int error;
+
+	error = mxt_read_t100_config(data);
+	if (error)
+		dev_warn(dev, "Failed to initialize T9 resolution\n");
+
+	input_dev = input_allocate_device();
+	if (!data || !input_dev) {
+		dev_err(dev, "Failed to allocate memory\n");
+		return -ENOMEM;
+	}
+
+	if (data->pdata->input_name)
+		input_dev->name = data->pdata->input_name;
+	else
+		input_dev->name = "atmel_mxt_ts T100 touchscreen";
+
+	input_dev->phys = data->phys;
+	input_dev->id.bustype = BUS_I2C;
+	input_dev->dev.parent = &data->client->dev;
+	input_dev->open = mxt_input_open;
+	input_dev->close = mxt_input_close;
+
+	set_bit(EV_ABS, input_dev->evbit);
+	input_set_capability(input_dev, EV_KEY, BTN_TOUCH);
+
+	/* 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);
+
+	if (data->t100_aux_ampl)
+		input_set_abs_params(input_dev, ABS_PRESSURE,
+				     0, 255, 0, 0);
 
-	mxt_handle_pdata(data);
+	/* For multi touch */
+	error = input_mt_init_slots(input_dev, data->num_touchids,
+				    INPUT_MT_DIRECT);
+	if (error) {
+		dev_err(dev, "Error %d initialising slots\n", error);
+		goto err_free_mem;
+	}
+
+	input_set_abs_params(input_dev, ABS_MT_TOOL_TYPE, 0, MT_TOOL_MAX, 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);
+
+	if (data->t100_aux_area)
+		input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR,
+				     0, MXT_MAX_AREA, 0, 0);
+
+	if (data->t100_aux_ampl)
+		input_set_abs_params(input_dev, ABS_MT_PRESSURE,
+				     0, 255, 0, 0);
+
+	if (data->t100_aux_vect)
+		input_set_abs_params(input_dev, ABS_MT_ORIENTATION,
+				     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);
+	release_firmware(cfg);
+}
+
+static int mxt_initialize(struct mxt_data *data)
+{
+	struct i2c_client *client = data->client;
+	int recovery_attempts = 0;
+	int error;
+
+	while (1) {
+		error = mxt_read_info_block(data);
+		if (!error)
+			break;
 
-	/* Backup to memory */
-	mxt_write_object(data, MXT_GEN_COMMAND_T6,
-			MXT_COMMAND_BACKUPNV,
-			MXT_BACKUP_VALUE);
-	msleep(MXT_BACKUP_TIME);
+		/* Check bootloader state */
+		error = mxt_probe_bootloader(data, false);
+		if (error) {
+			dev_info(&client->dev, "Trying alternate bootloader address\n");
+			error = mxt_probe_bootloader(data, true);
+			if (error) {
+				/* Chip is not in appmode or bootloader mode */
+				return error;
+			}
+		}
 
-	/* Soft reset */
-	mxt_write_object(data, MXT_GEN_COMMAND_T6,
-			MXT_COMMAND_RESET, 1);
-	msleep(MXT_RESET_TIME);
+		/* OK, we are in bootloader, see if we can recover */
+		if (++recovery_attempts > 1) {
+			dev_err(&client->dev, "Could not recover from bootloader mode\n");
+			/*
+			 * We can reflash from this state, so do not
+			 * abort initialization.
+			 */
+			data->in_bootloader = true;
+			return 0;
+		}
+
+		/* Attempt to exit bootloader into app mode */
+		mxt_send_bootloader_cmd(data, false);
+		msleep(MXT_FW_RESET_TIME);
+	}
 
-	/* Update matrix size at info struct */
-	error = mxt_read_reg(client, MXT_MATRIX_X_SIZE, &val);
+	error = mxt_check_retrigen(data);
 	if (error)
 		goto err_free_object_table;
-	info->matrix_xsize = val;
 
-	error = mxt_read_reg(client, MXT_MATRIX_Y_SIZE, &val);
+	error = mxt_acquire_irq(data);
 	if (error)
 		goto err_free_object_table;
-	info->matrix_ysize = val;
 
-	dev_info(&client->dev,
-			"Family ID: %u Variant ID: %u Major.Minor.Build: %u.%u.%02X\n",
-			info->family_id, info->variant_id, info->version >> 4,
-			info->version & 0xf, info->build);
+	error = mxt_debug_msg_init(data);
+	if (error)
+		goto err_free_object_table;
 
-	dev_info(&client->dev,
-			"Matrix X Size: %u Matrix Y Size: %u Object Num: %u\n",
-			info->matrix_xsize, info->matrix_ysize,
-			info->object_num);
+	if (data->cfg_name) {
+		error = request_firmware_nowait(THIS_MODULE, true,
+					data->cfg_name, &data->client->dev,
+					GFP_KERNEL, data, mxt_config_cb);
+		if (error) {
+			dev_err(&client->dev, "Failed to invoke firmware loader: %d\n",
+				error);
+			goto err_free_object_table;
+		}
+	} else {
+		error = mxt_configure_objects(data, NULL);
+		if (error)
+			goto err_free_object_table;
+	}
 
 	return 0;
 
@@ -882,18 +2529,104 @@ err_free_object_table:
 	return error;
 }
 
-static void mxt_calc_resolution(struct mxt_data *data)
+static int mxt_set_t7_power_cfg(struct mxt_data *data, u8 sleep)
+{
+	struct device *dev = &data->client->dev;
+	int error;
+	struct t7_config *new_config;
+	struct t7_config deepsleep = { .active = 0, .idle = 0 };
+
+	if (sleep == MXT_POWER_CFG_DEEPSLEEP)
+		new_config = &deepsleep;
+	else
+		new_config = &data->t7_cfg;
+
+	error = __mxt_write_reg(data->client, data->T7_address,
+				sizeof(data->t7_cfg), new_config);
+	if (error)
+		return error;
+
+	dev_dbg(dev, "Set T7 ACTV:%d IDLE:%d\n",
+		new_config->active, new_config->idle);
+
+	return 0;
+}
+
+static int mxt_init_t7_power_cfg(struct mxt_data *data)
+{
+	struct device *dev = &data->client->dev;
+	int error;
+	bool retry = false;
+
+recheck:
+	error = __mxt_read_reg(data->client, data->T7_address,
+				sizeof(data->t7_cfg), &data->t7_cfg);
+	if (error)
+		return error;
+
+	if (data->t7_cfg.active == 0 || data->t7_cfg.idle == 0) {
+		if (!retry) {
+			dev_dbg(dev, "T7 cfg zero, resetting\n");
+			mxt_soft_reset(data);
+			retry = true;
+			goto recheck;
+		} else {
+			dev_dbg(dev, "T7 cfg zero after reset, overriding\n");
+			data->t7_cfg.active = 20;
+			data->t7_cfg.idle = 100;
+			return mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN);
+		}
+	}
+
+	dev_dbg(dev, "Initialized power cfg: ACTV %d, IDLE %d\n",
+		data->t7_cfg.active, data->t7_cfg.idle);
+	return 0;
+}
+
+static int mxt_configure_objects(struct mxt_data *data,
+				 const struct firmware *cfg)
 {
-	unsigned int max_x = data->pdata->x_size - 1;
-	unsigned int max_y = data->pdata->y_size - 1;
+	struct device *dev = &data->client->dev;
+	int error;
+
+	error = mxt_init_t7_power_cfg(data);
+	if (error) {
+		dev_err(dev, "Failed to initialize power cfg\n");
+		goto err_free_object_table;
+	}
 
-	if (data->pdata->orient & MXT_XY_SWITCH) {
-		data->max_x = max_y;
-		data->max_y = max_x;
+	if (cfg) {
+		error = mxt_update_cfg(data, cfg);
+		if (error)
+			dev_warn(dev, "Error %d updating config\n", error);
+	}
+
+	if (data->T9_reportid_min) {
+		error = mxt_initialize_t9_input_device(data);
+		if (error)
+			goto err_free_object_table;
+	} else if (data->T100_reportid_min) {
+		error = mxt_initialize_t100_input_device(data);
+		if (error)
+			goto err_free_object_table;
 	} else {
-		data->max_x = max_x;
-		data->max_y = max_y;
+		dev_warn(dev, "No touch object detected\n");
 	}
+
+	return 0;
+
+err_free_object_table:
+	mxt_free_object_table(data);
+	return error;
+}
+
+/* Configuration crc check sum is returned as hex xxxxxx */
+static ssize_t mxt_config_csum_show(struct device *dev,
+		struct device_attribute *attr, char *buf)
+{
+	struct mxt_data *data = dev_get_drvdata(dev);
+
+	return scnprintf(buf, PAGE_SIZE, "%06x\n", data->config_crc);
 }
 
 /* Firmware Version is returned as Major.Minor.Build */
@@ -901,9 +2634,13 @@ static ssize_t mxt_fw_version_show(struct device *dev,
 				   struct device_attribute *attr, char *buf)
 {
 	struct mxt_data *data = dev_get_drvdata(dev);
-	struct mxt_info *info = &data->info;
+
+	if (!data->object_table)
+		return -EINVAL;
+
 	return scnprintf(buf, PAGE_SIZE, "%u.%u.%02X\n",
-			 info->version >> 4, info->version & 0xf, info->build);
+			 data->info->version >> 4, data->info->version & 0xf,
+			 data->info->build);
 }
 
 /* Hardware Version is returned as FamilyID.VariantID */
@@ -911,9 +2648,12 @@ static ssize_t mxt_hw_version_show(struct device *dev,
 				   struct device_attribute *attr, char *buf)
 {
 	struct mxt_data *data = dev_get_drvdata(dev);
-	struct mxt_info *info = &data->info;
+
+	if (!data->object_table)
+		return -EINVAL;
+
 	return scnprintf(buf, PAGE_SIZE, "%u.%u\n",
-			 info->family_id, info->variant_id);
+			data->info->family_id, data->info->variant_id);
 }
 
 static ssize_t mxt_show_instance(char *buf, int count,
@@ -922,11 +2662,11 @@ static ssize_t mxt_show_instance(char *buf, int count,
 {
 	int i;
 
-	if (object->instances > 0)
+	if (mxt_obj_instances(object) > 1)
 		count += scnprintf(buf + count, PAGE_SIZE - count,
 				   "Instance %u\n", instance);
 
-	for (i = 0; i < object->size + 1; i++)
+	for (i = 0; i < mxt_obj_size(object); i++)
 		count += scnprintf(buf + count, PAGE_SIZE - count,
 				"\t[%2u]: %02x (%d)\n", i, val[i], val[i]);
 	count += scnprintf(buf + count, PAGE_SIZE - count, "\n");
@@ -944,13 +2684,16 @@ static ssize_t mxt_object_show(struct device *dev,
 	int error;
 	u8 *obuf;
 
+	if (!data->object_table)
+		return -EINVAL;
+
 	/* Pre-allocate buffer large enough to hold max sized object. */
 	obuf = kmalloc(256, GFP_KERNEL);
 	if (!obuf)
 		return -ENOMEM;
 
 	error = 0;
-	for (i = 0; i < data->info.object_num; i++) {
+	for (i = 0; i < data->info->object_num; i++) {
 		object = data->object_table + i;
 
 		if (!mxt_object_readable(object->type))
@@ -959,8 +2702,8 @@ static ssize_t mxt_object_show(struct device *dev,
 		count += scnprintf(buf + count, PAGE_SIZE - count,
 				"T%u:\n", object->type);
 
-		for (j = 0; j < object->instances + 1; j++) {
-			u16 size = object->size + 1;
+		for (j = 0; j < mxt_obj_instances(object); j++) {
+			u16 size = mxt_obj_size(object);
 			u16 addr = object->start_address + j * size;
 
 			error = __mxt_read_reg(data->client, addr, size, obuf);
@@ -976,75 +2719,186 @@ done:
 	return error ?: count;
 }
 
-static int mxt_load_fw(struct device *dev, const char *fn)
+static int mxt_check_firmware_format(struct device *dev,
+				     const struct firmware *fw)
+{
+	unsigned int pos = 0;
+	char c;
+
+	while (pos < fw->size) {
+		c = *(fw->data + pos);
+
+		if (c < '0' || (c > '9' && c < 'A') || c > 'F')
+			return 0;
+
+		pos++;
+	}
+
+	/*
+	 * To convert file try:
+	 * xxd -r -p mXTXXX__APP_VX-X-XX.enc > maxtouch.fw
+	 */
+	dev_err(dev, "Aborting: firmware file must be in binary format\n");
+
+	return -EINVAL;
+}
+
+static int mxt_load_fw(struct device *dev)
 {
 	struct mxt_data *data = dev_get_drvdata(dev);
-	struct i2c_client *client = data->client;
 	const struct firmware *fw = NULL;
 	unsigned int frame_size;
 	unsigned int pos = 0;
+	unsigned int retry = 0;
+	unsigned int frame = 0;
 	int ret;
 
-	ret = request_firmware(&fw, fn, dev);
+	ret = request_firmware(&fw, data->fw_name, dev);
 	if (ret) {
-		dev_err(dev, "Unable to open firmware %s\n", fn);
+		dev_err(dev, "Unable to open firmware %s\n", data->fw_name);
 		return ret;
 	}
 
-	/* Change to the bootloader mode */
-	mxt_write_object(data, MXT_GEN_COMMAND_T6,
-			MXT_COMMAND_RESET, MXT_BOOT_VALUE);
-	msleep(MXT_RESET_TIME);
+	/* Check for incorrect enc file */
+	ret = mxt_check_firmware_format(dev, fw);
+	if (ret)
+		goto release_firmware;
 
-	/* Change to slave address of bootloader */
-	if (client->addr == MXT_APP_LOW)
-		client->addr = MXT_BOOT_LOW;
-	else
-		client->addr = MXT_BOOT_HIGH;
+	if (data->suspended) {
+		if (data->use_regulator)
+			mxt_regulator_enable(data);
 
-	ret = mxt_check_bootloader(client, MXT_WAITING_BOOTLOAD_CMD);
-	if (ret)
-		goto out;
+		enable_irq(data->irq);
+		data->suspended = false;
+	}
+
+	if (!data->in_bootloader) {
+		/* 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;
+
+		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;
 
-	/* Unlock bootloader */
-	mxt_unlock_bootloader(client);
+		mxt_free_input_device(data);
+		mxt_free_object_table(data);
+	} else {
+		enable_irq(data->irq);
+	}
+
+	INIT_COMPLETION(data->bl_completion);
+
+	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 */
+		ret = mxt_send_bootloader_cmd(data, true);
+		if (ret)
+			goto disable_irq;
+	}
 
 	while (pos < fw->size) {
-		ret = mxt_check_bootloader(client,
-						MXT_WAITING_FRAME_DATA);
+		ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA, true);
 		if (ret)
-			goto out;
+			goto disable_irq;
 
 		frame_size = ((*(fw->data + pos) << 8) | *(fw->data + pos + 1));
 
-		/* We should add 2 at frame size as the the firmware data is not
-		 * included the CRC bytes.
-		 */
+		/* Take account of CRC bytes */
 		frame_size += 2;
 
 		/* Write one frame to device */
-		mxt_fw_write(client, fw->data + pos, frame_size);
-
-		ret = mxt_check_bootloader(client,
-						MXT_FRAME_CRC_PASS);
+		ret = mxt_bootloader_write(data, fw->data + pos, frame_size);
 		if (ret)
-			goto out;
+			goto disable_irq;
 
-		pos += frame_size;
+		ret = mxt_check_bootloader(data, MXT_FRAME_CRC_PASS, true);
+		if (ret) {
+			retry++;
 
-		dev_dbg(dev, "Updated %d bytes / %zd bytes\n", pos, fw->size);
+			/* Back off by 20ms per retry */
+			msleep(retry * 20);
+
+			if (retry > 20) {
+				dev_err(dev, "Retry count exceeded\n");
+				goto disable_irq;
+			}
+		} else {
+			retry = 0;
+			pos += frame_size;
+			frame++;
+		}
+
+		if (frame % 50 == 0)
+			dev_dbg(dev, "Sent %d frames, %d/%zd bytes\n",
+				frame, pos, fw->size);
 	}
 
-out:
+	/* Wait for flash. */
+	ret = mxt_wait_for_completion(data, &data->bl_completion,
+				      MXT_FW_RESET_TIME);
+	if (ret)
+		goto disable_irq;
+
+	dev_dbg(dev, "Sent %d frames, %d bytes\n", frame, pos);
+
+	/*
+	 * Wait for device to reset. Some bootloader versions do not assert
+	 * the CHG line after bootloading has finished, so ignore potential
+	 * errors.
+	 */
+	mxt_wait_for_completion(data, &data->bl_completion, MXT_FW_RESET_TIME);
+
+	data->in_bootloader = false;
+
+disable_irq:
+	disable_irq(data->irq);
+release_firmware:
 	release_firmware(fw);
+	return ret;
+}
 
-	/* Change to slave address of application */
-	if (client->addr == MXT_BOOT_LOW)
-		client->addr = MXT_APP_LOW;
+static int mxt_update_file_name(struct device *dev, char **file_name,
+				const char *buf, size_t count)
+{
+	char *file_name_tmp;
+
+	/* Simple sanity check */
+	if (count > 64) {
+		dev_warn(dev, "File name too long\n");
+		return -EINVAL;
+	}
+
+	file_name_tmp = krealloc(*file_name, count + 1, GFP_KERNEL);
+	if (!file_name_tmp) {
+		dev_warn(dev, "no memory\n");
+		return -ENOMEM;
+	}
+
+	*file_name = file_name_tmp;
+	memcpy(*file_name, buf, count);
+
+	/* Echo into the sysfs entry may append newline at the end of buf */
+	if (buf[count - 1] == '\n')
+		(*file_name)[count - 1] = '\0';
 	else
-		client->addr = MXT_APP_HIGH;
+		(*file_name)[count] = '\0';
 
-	return ret;
+	return 0;
 }
 
 static ssize_t mxt_update_fw_store(struct device *dev,
@@ -1054,42 +2908,211 @@ static ssize_t mxt_update_fw_store(struct device *dev,
 	struct mxt_data *data = dev_get_drvdata(dev);
 	int error;
 
-	disable_irq(data->irq);
+	error = mxt_update_file_name(dev, &data->fw_name, buf, count);
+	if (error)
+		return error;
 
-	error = mxt_load_fw(dev, MXT_FW_NAME);
+	error = mxt_load_fw(dev);
 	if (error) {
 		dev_err(dev, "The firmware update failed(%d)\n", error);
 		count = error;
 	} else {
-		dev_dbg(dev, "The firmware update succeeded\n");
+		dev_info(dev, "The firmware update succeeded\n");
 
-		/* Wait for reset */
-		msleep(MXT_FWRESET_TIME);
+		data->suspended = false;
 
-		mxt_free_object_table(data);
+		error = mxt_initialize(data);
+		if (error)
+			return error;
+	}
 
-		mxt_initialize(data);
+	return count;
+}
+
+static ssize_t mxt_update_cfg_store(struct device *dev,
+		struct device_attribute *attr,
+		const char *buf, size_t count)
+{
+	struct mxt_data *data = dev_get_drvdata(dev);
+	const struct firmware *cfg;
+	int ret;
+
+	if (data->in_bootloader) {
+		dev_err(dev, "Not in appmode\n");
+		return -EINVAL;
 	}
 
-	enable_irq(data->irq);
+	ret = mxt_update_file_name(dev, &data->cfg_name, buf, count);
+	if (ret)
+		return ret;
 
-	error = mxt_make_highchg(data);
-	if (error)
-		return error;
+	ret = request_firmware(&cfg, data->cfg_name, dev);
+	if (ret < 0) {
+		dev_err(dev, "Failure to request config file %s\n",
+			data->cfg_name);
+		ret = -ENOENT;
+		goto out;
+	}
 
-	return count;
+	data->updating_config = true;
+
+	mxt_free_input_device(data);
+
+	if (data->suspended) {
+		if (data->use_regulator) {
+			enable_irq(data->irq);
+			mxt_regulator_enable(data);
+		} else {
+			mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN);
+			mxt_acquire_irq(data);
+		}
+
+		data->suspended = false;
+	}
+
+	ret = mxt_configure_objects(data, cfg);
+	if (ret)
+		goto release;
+
+	ret = count;
+
+release:
+	release_firmware(cfg);
+out:
+	data->updating_config = false;
+	return ret;
+}
+
+static ssize_t mxt_debug_enable_show(struct device *dev,
+	struct device_attribute *attr, char *buf)
+{
+	struct mxt_data *data = dev_get_drvdata(dev);
+	char c;
+
+	c = data->debug_enabled ? '1' : '0';
+	return scnprintf(buf, PAGE_SIZE, "%c\n", c);
+}
+
+static ssize_t mxt_debug_notify_show(struct device *dev,
+	struct device_attribute *attr, char *buf)
+{
+	return sprintf(buf, "0\n");
+}
+
+static ssize_t mxt_debug_v2_enable_store(struct device *dev,
+	struct device_attribute *attr, const char *buf, size_t count)
+{
+	struct mxt_data *data = dev_get_drvdata(dev);
+	u8 i;
+	ssize_t ret;
+
+	if (kstrtou8(buf, 0, &i) == 0 && i < 2) {
+		if (i == 1)
+			mxt_debug_msg_enable(data);
+		else
+			mxt_debug_msg_disable(data);
+
+		ret = count;
+	} else {
+		dev_dbg(dev, "debug_enabled write error\n");
+		ret = -EINVAL;
+	}
+
+	return ret;
+}
+
+static ssize_t mxt_debug_enable_store(struct device *dev,
+	struct device_attribute *attr, const char *buf, size_t count)
+{
+	struct mxt_data *data = dev_get_drvdata(dev);
+	u8 i;
+	ssize_t ret;
+
+	if (kstrtou8(buf, 0, &i) == 0 && i < 2) {
+		data->debug_enabled = (i == 1);
+
+		dev_dbg(dev, "%s\n", i ? "debug enabled" : "debug disabled");
+		ret = count;
+	} else {
+		dev_dbg(dev, "debug_enabled write error\n");
+		ret = -EINVAL;
+	}
+
+	return ret;
+}
+
+static int mxt_check_mem_access_params(struct mxt_data *data, loff_t off,
+				       size_t *count)
+{
+	if (off >= data->mem_size)
+		return -EIO;
+
+	if (off + *count > data->mem_size)
+		*count = data->mem_size - off;
+
+	if (*count > MXT_MAX_BLOCK_WRITE)
+		*count = MXT_MAX_BLOCK_WRITE;
+
+	return 0;
+}
+
+static ssize_t mxt_mem_access_read(struct file *filp, struct kobject *kobj,
+	struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count)
+{
+	struct device *dev = container_of(kobj, struct device, kobj);
+	struct mxt_data *data = dev_get_drvdata(dev);
+	int ret = 0;
+
+	ret = mxt_check_mem_access_params(data, off, &count);
+	if (ret < 0)
+		return ret;
+
+	if (count > 0)
+		ret = __mxt_read_reg(data->client, off, count, buf);
+
+	return ret == 0 ? count : ret;
+}
+
+static ssize_t mxt_mem_access_write(struct file *filp, struct kobject *kobj,
+	struct bin_attribute *bin_attr, char *buf, loff_t off,
+	size_t count)
+{
+	struct device *dev = container_of(kobj, struct device, kobj);
+	struct mxt_data *data = dev_get_drvdata(dev);
+	int ret = 0;
+
+	ret = mxt_check_mem_access_params(data, off, &count);
+	if (ret < 0)
+		return ret;
+
+	if (count > 0)
+		ret = __mxt_write_reg(data->client, off, count, buf);
+
+	return ret == 0 ? count : ret;
 }
 
 static DEVICE_ATTR(fw_version, S_IRUGO, mxt_fw_version_show, NULL);
 static DEVICE_ATTR(hw_version, S_IRUGO, mxt_hw_version_show, NULL);
 static DEVICE_ATTR(object, S_IRUGO, mxt_object_show, NULL);
 static DEVICE_ATTR(update_fw, S_IWUSR, NULL, mxt_update_fw_store);
+static DEVICE_ATTR(update_cfg, S_IWUSR, NULL, mxt_update_cfg_store);
+static DEVICE_ATTR(config_csum, S_IRUGO, mxt_config_csum_show, NULL);
+static DEVICE_ATTR(debug_enable, S_IWUSR | S_IRUSR, mxt_debug_enable_show,
+		   mxt_debug_enable_store);
+static DEVICE_ATTR(debug_v2_enable, S_IWUSR | S_IRUSR, NULL,
+		   mxt_debug_v2_enable_store);
+static DEVICE_ATTR(debug_notify, S_IRUGO, mxt_debug_notify_show, NULL);
 
 static struct attribute *mxt_attrs[] = {
 	&dev_attr_fw_version.attr,
 	&dev_attr_hw_version.attr,
 	&dev_attr_object.attr,
 	&dev_attr_update_fw.attr,
+	&dev_attr_update_cfg.attr,
+	&dev_attr_config_csum.attr,
+	&dev_attr_debug_enable.attr,
+	&dev_attr_debug_v2_enable.attr,
+	&dev_attr_debug_notify.attr,
 	NULL
 };
 
@@ -1097,18 +3120,66 @@ static const struct attribute_group mxt_attr_group = {
 	.attrs = mxt_attrs,
 };
 
+static void mxt_reset_slots(struct mxt_data *data)
+{
+	struct input_dev *input_dev = data->input_dev;
+	unsigned int num_mt_slots;
+	int id;
+
+	if (!input_dev)
+		return;
+
+	num_mt_slots = data->num_touchids + data->num_stylusids;
+
+	for (id = 0; id < num_mt_slots; id++) {
+		input_mt_slot(input_dev, id);
+		input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 0);
+	}
+
+	mxt_input_sync(data);
+}
+
 static void mxt_start(struct mxt_data *data)
 {
-	/* Touch enable */
-	mxt_write_object(data,
-			MXT_TOUCH_MULTI_T9, MXT_TOUCH_CTRL, 0x83);
+	if (!data->suspended || data->in_bootloader)
+		return;
+
+	if (data->use_regulator) {
+		enable_irq(data->irq);
+
+		mxt_regulator_enable(data);
+	} else {
+		/*
+		 * Discard any messages still in message buffer
+		 * from before chip went to sleep
+		 */
+		mxt_process_messages_until_invalid(data);
+
+		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);
+
+		mxt_acquire_irq(data);
+	}
+
+	data->suspended = false;
 }
 
 static void mxt_stop(struct mxt_data *data)
 {
-	/* Touch disable */
-	mxt_write_object(data,
-			MXT_TOUCH_MULTI_T9, MXT_TOUCH_CTRL, 0);
+	if (data->suspended || data->in_bootloader || data->updating_config)
+		return;
+
+	disable_irq(data->irq);
+
+	if (data->use_regulator)
+		mxt_regulator_disable(data);
+	else
+		mxt_set_t7_power_cfg(data, MXT_POWER_CFG_DEEPSLEEP);
+
+	mxt_reset_slots(data);
+	data->suspended = true;
 }
 
 static int mxt_input_open(struct input_dev *dev)
@@ -1127,134 +3198,155 @@ 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)
 {
-	const struct mxt_platform_data *pdata = client->dev.platform_data;
-	struct mxt_data *data;
-	struct input_dev *input_dev;
-	int error;
-	unsigned int num_mt_slots;
+	struct mxt_platform_data *pdata;
+	u32 *keymap;
+	int proplen, ret;
 
+	if (!client->dev.of_node)
+		return ERR_PTR(-ENODEV);
+
+	pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
 	if (!pdata)
-		return -EINVAL;
+		return ERR_PTR(-ENOMEM);
 
-	data = kzalloc(sizeof(struct mxt_data), GFP_KERNEL);
-	input_dev = input_allocate_device();
-	if (!data || !input_dev) {
-		dev_err(&client->dev, "Failed to allocate memory\n");
-		error = -ENOMEM;
-		goto err_free_mem;
-	}
+	/* reset gpio */
+	pdata->gpio_reset = of_get_named_gpio_flags(client->dev.of_node,
+		"atmel,reset-gpio", 0, NULL);
 
-	data->is_tp = pdata && pdata->is_tp;
+	of_property_read_string(client->dev.of_node, "atmel,cfg_name",
+				&pdata->cfg_name);
 
-	input_dev->name = (data->is_tp) ? "Atmel maXTouch Touchpad" :
-					  "Atmel maXTouch Touchscreen";
-	snprintf(data->phys, sizeof(data->phys), "i2c-%u-%04x/input0",
-		 client->adapter->nr, client->addr);
+	of_property_read_string(client->dev.of_node, "atmel,input_name",
+				&pdata->input_name);
 
-	input_dev->phys = data->phys;
+	if (of_find_property(client->dev.of_node, "linux,gpio-keymap",
+			     &proplen)) {
+		pdata->t19_num_keys = proplen / sizeof(u32);
 
-	input_dev->id.bustype = BUS_I2C;
-	input_dev->dev.parent = &client->dev;
-	input_dev->open = mxt_input_open;
-	input_dev->close = mxt_input_close;
+		keymap = devm_kzalloc(&client->dev,
+				pdata->t19_num_keys * sizeof(keymap[0]),
+				GFP_KERNEL);
+		if (!keymap)
+			return ERR_PTR(-ENOMEM);
 
-	data->client = client;
-	data->input_dev = input_dev;
-	data->pdata = pdata;
-	data->irq = client->irq;
+		ret = of_property_read_u32_array(client->dev.of_node,
+			"linux,gpio-keymap", keymap, pdata->t19_num_keys);
+		if (ret) {
+			dev_err(&client->dev,
+				"Unable to read device tree key codes: %d\n",
+				 ret);
+			return NULL;
+		}
 
-	mxt_calc_resolution(data);
+		pdata->t19_keymap = keymap;
+	}
 
-	error = mxt_initialize(data);
-	if (error)
-		goto err_free_mem;
+	return pdata;
+}
+#else
+static struct mxt_platform_data *mxt_parse_dt(struct i2c_client *client)
+{
+	struct mxt_platform_data *pdata;
 
-	__set_bit(EV_ABS, input_dev->evbit);
-	__set_bit(EV_KEY, input_dev->evbit);
-	__set_bit(BTN_TOUCH, input_dev->keybit);
+	pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
+	if (!pdata)
+		return ERR_PTR(-ENOMEM);
 
-	if (data->is_tp) {
-		int i;
-		__set_bit(INPUT_PROP_POINTER, input_dev->propbit);
-		__set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit);
+	/* Set default parameters */
+	pdata->irqflags = IRQF_TRIGGER_FALLING;
 
-		for (i = 0; i < MXT_NUM_GPIO; i++)
-			if (pdata->key_map[i] != KEY_RESERVED)
-				__set_bit(pdata->key_map[i], input_dev->keybit);
+	return pdata;
+}
+#endif
 
-		__set_bit(BTN_TOOL_FINGER, input_dev->keybit);
-		__set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit);
-		__set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit);
-		__set_bit(BTN_TOOL_QUADTAP, input_dev->keybit);
-		__set_bit(BTN_TOOL_QUINTTAP, input_dev->keybit);
+static int mxt_probe(struct i2c_client *client, const struct i2c_device_id *id)
+{
+	struct mxt_data *data;
+	const struct mxt_platform_data *pdata;
+	int error;
 
-		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);
+	pdata = dev_get_platdata(&client->dev);
+	if (!pdata) {
+		pdata = mxt_parse_dt(client);
+		if (IS_ERR(pdata))
+			return PTR_ERR(pdata);
 	}
 
-	/* 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);
+	data = kzalloc(sizeof(struct mxt_data), GFP_KERNEL);
+	if (!data) {
+		dev_err(&client->dev, "Failed to allocate memory\n");
+		return -ENOMEM;
+	}
 
-	/* 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, 0);
-	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);
+	snprintf(data->phys, sizeof(data->phys), "i2c-%u-%04x/input0",
+		 client->adapter->nr, client->addr);
 
-	input_set_drvdata(input_dev, data);
+	data->client = client;
+	data->pdata = pdata;
+	data->irq = client->irq;
 	i2c_set_clientdata(client, data);
 
+	if (data->pdata->cfg_name)
+		mxt_update_file_name(&data->client->dev,
+				     &data->cfg_name,
+				     data->pdata->cfg_name,
+				     strlen(data->pdata->cfg_name));
+
+	init_completion(&data->bl_completion);
+	init_completion(&data->reset_completion);
+	init_completion(&data->crc_completion);
+	mutex_init(&data->debug_msg_lock);
+
 	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;
+	mxt_probe_regulators(data);
 
-	error = input_register_device(input_dev);
-	if (error)
-		goto err_free_irq;
+	disable_irq(data->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_free_irq;
+	}
+
+	sysfs_bin_attr_init(&data->mem_access_attr);
+	data->mem_access_attr.attr.name = "mem_access";
+	data->mem_access_attr.attr.mode = S_IRUGO | S_IWUSR;
+	data->mem_access_attr.read = mxt_mem_access_read;
+	data->mem_access_attr.write = mxt_mem_access_write;
+	data->mem_access_attr.size = data->mem_size;
+
+	if (sysfs_create_bin_file(&client->dev.kobj,
+				  &data->mem_access_attr) < 0) {
+		dev_err(&client->dev, "Failed to create %s\n",
+			data->mem_access_attr.attr.name);
+		goto err_remove_sysfs_group;
+	}
+
+	error = mxt_initialize(data);
 	if (error)
-		goto err_unregister_device;
+		goto err_remove_mem_access;
 
 	return 0;
 
-err_unregister_device:
-	input_unregister_device(input_dev);
-	input_dev = NULL;
+err_remove_mem_access:
+	sysfs_remove_bin_file(&client->dev.kobj, &data->mem_access_attr);
+	data->mem_access_attr.attr.name = NULL;
+err_remove_sysfs_group:
+	sysfs_remove_group(&client->dev.kobj, &mxt_attr_group);
 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;
 }
@@ -1263,10 +3355,16 @@ static int mxt_remove(struct i2c_client *client)
 {
 	struct mxt_data *data = i2c_get_clientdata(client);
 
+	if (data->mem_access_attr.attr.name)
+		sysfs_remove_bin_file(&client->dev.kobj,
+				      &data->mem_access_attr);
+
 	sysfs_remove_group(&client->dev.kobj, &mxt_attr_group);
 	free_irq(data->irq, data);
-	input_unregister_device(data->input_dev);
-	kfree(data->object_table);
+	regulator_put(data->reg_avdd);
+	regulator_put(data->reg_vdd);
+	mxt_free_input_device(data);
+	mxt_free_object_table(data);
 	kfree(data);
 
 	return 0;
@@ -1295,12 +3393,6 @@ static int mxt_resume(struct device *dev)
 	struct mxt_data *data = i2c_get_clientdata(client);
 	struct input_dev *input_dev = data->input_dev;
 
-	/* Soft reset */
-	mxt_write_object(data, MXT_GEN_COMMAND_T6,
-			MXT_COMMAND_RESET, 1);
-
-	msleep(MXT_RESET_TIME);
-
 	mutex_lock(&input_dev->mutex);
 
 	if (input_dev->users)
@@ -1314,6 +3406,12 @@ 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 },
@@ -1327,6 +3425,7 @@ 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/include/linux/i2c/atmel_mxt_ts.h b/include/linux/i2c/atmel_mxt_ts.h
index 99e379b7439..bc74c3f4c86 100644
--- a/include/linux/i2c/atmel_mxt_ts.h
+++ b/include/linux/i2c/atmel_mxt_ts.h
@@ -15,35 +15,16 @@
 
 #include <linux/types.h>
 
-/* For key_map array */
-#define MXT_NUM_GPIO		4
-
-/* Orient */
-#define MXT_NORMAL		0x0
-#define MXT_DIAGONAL		0x1
-#define MXT_HORIZONTAL_FLIP	0x2
-#define MXT_ROTATED_90_COUNTER	0x3
-#define MXT_VERTICAL_FLIP	0x4
-#define MXT_ROTATED_90		0x5
-#define MXT_ROTATED_180		0x6
-#define MXT_DIAGONAL_COUNTER	0x7
-
 /* The platform data for the Atmel maXTouch touchscreen driver */
 struct mxt_platform_data {
-	const u8 *config;
-	size_t config_length;
-
-	unsigned int x_line;
-	unsigned int y_line;
-	unsigned int x_size;
-	unsigned int y_size;
-	unsigned int blen;
-	unsigned int threshold;
-	unsigned int voltage;
-	unsigned char orient;
 	unsigned long irqflags;
-	bool is_tp;
-	const unsigned int key_map[MXT_NUM_GPIO];
+	u8 t19_num_keys;
+	const unsigned int *t19_keymap;
+	int t15_num_keys;
+	const unsigned int *t15_keymap;
+	unsigned long gpio_reset;
+	const char *cfg_name;
+	const char *input_name;
 };
 
 #endif /* __LINUX_ATMEL_MXT_TS_H */