Merge branch 'next' into for-linus

Conflicts:
	include/linux/input.h

63 files changed, 3201 insertions, 753 deletions

diff --git a/Documentation/DocBook/device-drivers.tmpl b/Documentation/DocBook/device-drivers.tmpl
index 22edcbb9ddaf..35447e081736 100644
--- a/Documentation/DocBook/device-drivers.tmpl
+++ b/Documentation/DocBook/device-drivers.tmpl
@@ -304,6 +304,10 @@ X!Idrivers/video/console/fonts.c
 !Edrivers/input/ff-core.c
 !Edrivers/input/ff-memless.c
      </sect1>
+     <sect1><title>Multitouch Library</title>
+!Iinclude/linux/input/mt.h
+!Edrivers/input/input-mt.c
+     </sect1>
      <sect1><title>Polled input devices</title>
 !Iinclude/linux/input-polldev.h
 !Edrivers/input/input-polldev.c
diff --git a/Documentation/input/cma3000_d0x.txt b/Documentation/input/cma3000_d0x.txt
new file mode 100644
index 000000000000..29d088db4afd
--- /dev/null
+++ b/Documentation/input/cma3000_d0x.txt
@@ -0,0 +1,115 @@
+Kernel driver for CMA3000-D0x
+============================
+
+Supported chips:
+* VTI CMA3000-D0x
+Datasheet:
+  CMA3000-D0X Product Family Specification 8281000A.02.pdf
+  <http://www.vti.fi/en/>
+
+Author: Hemanth V <hemanthv@ti.com>
+
+
+Description
+-----------
+CMA3000 Tri-axis accelerometer supports Motion detect, Measurement and
+Free fall modes.
+
+Motion Detect Mode: Its the low power mode where interrupts are generated only
+when motion exceeds the defined thresholds.
+
+Measurement Mode: This mode is used to read the acceleration data on X,Y,Z
+axis and supports 400, 100, 40 Hz sample frequency.
+
+Free fall Mode: This mode is intended to save system resources.
+
+Threshold values: Chip supports defining threshold values for above modes
+which includes time and g value. Refer product specifications for more details.
+
+CMA3000 chip supports mutually exclusive I2C and SPI interfaces for
+communication, currently the driver supports I2C based communication only.
+Initial configuration for bus mode is set in non volatile memory and can later
+be modified through bus interface command.
+
+Driver reports acceleration data through input subsystem. It generates ABS_MISC
+event with value 1 when free fall is detected.
+
+Platform data need to be configured for initial default values.
+
+Platform Data
+-------------
+fuzz_x: Noise on X Axis
+
+fuzz_y: Noise on Y Axis
+
+fuzz_z: Noise on Z Axis
+
+g_range: G range in milli g i.e 2000 or 8000
+
+mode: Default Operating mode
+
+mdthr: Motion detect g range threshold value
+
+mdfftmr: Motion detect and free fall time threshold value
+
+ffthr: Free fall g range threshold value
+
+Input Interface
+--------------
+Input driver version is 1.0.0
+Input device ID: bus 0x18 vendor 0x0 product 0x0 version 0x0
+Input device name: "cma3000-accelerometer"
+Supported events:
+  Event type 0 (Sync)
+  Event type 3 (Absolute)
+    Event code 0 (X)
+      Value     47
+      Min    -8000
+      Max     8000
+      Fuzz     200
+    Event code 1 (Y)
+      Value    -28
+      Min    -8000
+      Max     8000
+      Fuzz     200
+    Event code 2 (Z)
+      Value    905
+      Min    -8000
+      Max     8000
+      Fuzz     200
+    Event code 40 (Misc)
+      Value      0
+      Min        0
+      Max        1
+  Event type 4 (Misc)
+
+
+Register/Platform parameters Description
+----------------------------------------
+
+mode:
+	0: power down mode
+	1: 100 Hz Measurement mode
+	2: 400 Hz Measurement mode
+	3: 40 Hz Measurement mode
+	4: Motion Detect mode (default)
+	5: 100 Hz Free fall mode
+	6: 40 Hz Free fall mode
+	7: Power off mode
+
+grange:
+	2000: 2000 mg or 2G Range
+	8000: 8000 mg or 8G Range
+
+mdthr:
+	X: X * 71mg (8G Range)
+	X: X * 18mg (2G Range)
+
+mdfftmr:
+	X: (X & 0x70) * 100 ms (MDTMR)
+	   (X & 0x0F) * 2.5 ms (FFTMR 400 Hz)
+	   (X & 0x0F) * 10 ms  (FFTMR 100 Hz)
+
+ffthr:
+       X: (X >> 2) * 18mg (2G Range)
+       X: (X & 0x0F) * 71 mg (8G Range)
diff --git a/Documentation/input/multi-touch-protocol.txt b/Documentation/input/multi-touch-protocol.txt
index bdcba154b83e..71536e78406f 100644
--- a/Documentation/input/multi-touch-protocol.txt
+++ b/Documentation/input/multi-touch-protocol.txt
@@ -1,6 +1,6 @@
 Multi-touch (MT) Protocol
 -------------------------
-	Copyright (C) 2009	Henrik Rydberg <rydberg@euromail.se>
+	Copyright (C) 2009-2010	Henrik Rydberg <rydberg@euromail.se>
 
 
 Introduction
@@ -161,19 +161,24 @@ against the glass. The inner region will increase, and in general, the
 ratio ABS_MT_TOUCH_MAJOR / ABS_MT_WIDTH_MAJOR, which is always smaller than
 unity, is related to the contact pressure. For pressure-based devices,
 ABS_MT_PRESSURE may be used to provide the pressure on the contact area
-instead.
+instead. Devices capable of contact hovering can use ABS_MT_DISTANCE to
+indicate the distance between the contact and the surface.
 
 In addition to the MAJOR parameters, the oval shape of the contact can be
 described by adding the MINOR parameters, such that MAJOR and MINOR are the
 major and minor axis of an ellipse. Finally, the orientation of the oval
 shape can be describe with the ORIENTATION parameter.
 
+For type A devices, further specification of the touch shape is possible
+via ABS_MT_BLOB_ID.
+
 The ABS_MT_TOOL_TYPE may be used to specify whether the touching tool is a
-contact or a pen or something else.  Devices with more granular information
-may specify general shapes as blobs, i.e., as a sequence of rectangular
-shapes grouped together by an ABS_MT_BLOB_ID. Finally, for the few devices
-that currently support it, the ABS_MT_TRACKING_ID event may be used to
-report contact tracking from hardware [5].
+finger or a pen or something else. Finally, the ABS_MT_TRACKING_ID event
+may be used to track identified contacts over time [5].
+
+In the type B protocol, ABS_MT_TOOL_TYPE and ABS_MT_TRACKING_ID are
+implicitly handled by input core; drivers should instead call
+input_mt_report_slot_state().
 
 
 Event Semantics
@@ -213,6 +218,12 @@ The pressure, in arbitrary units, on the contact area. May be used instead
 of TOUCH and WIDTH for pressure-based devices or any device with a spatial
 signal intensity distribution.
 
+ABS_MT_DISTANCE
+
+The distance, in surface units, between the contact and the surface. Zero
+distance means the contact is touching the surface. A positive number means
+the contact is hovering above the surface.
+
 ABS_MT_ORIENTATION
 
 The orientation of the ellipse. The value should describe a signed quarter
@@ -240,21 +251,24 @@ ABS_MT_TOOL_TYPE
 The type of approaching tool. A lot of kernel drivers cannot distinguish
 between different tool types, such as a finger or a pen. In such cases, the
 event should be omitted. The protocol currently supports MT_TOOL_FINGER and
-MT_TOOL_PEN [2].
+MT_TOOL_PEN [2]. For type B devices, this event is handled by input core;
+drivers should instead use input_mt_report_slot_state().
 
 ABS_MT_BLOB_ID
 
 The BLOB_ID groups several packets together into one arbitrarily shaped
-contact. This is a low-level anonymous grouping for type A devices, and
+contact. The sequence of points forms a polygon which defines the shape of
+the contact. This is a low-level anonymous grouping for type A devices, and
 should not be confused with the high-level trackingID [5]. Most type A
 devices do not have blob capability, so drivers can safely omit this event.
 
 ABS_MT_TRACKING_ID
 
 The TRACKING_ID identifies an initiated contact throughout its life cycle
-[5]. This event is mandatory for type B devices. The value range of the
-TRACKING_ID should be large enough to ensure unique identification of a
-contact maintained over an extended period of time.
+[5]. The value range of the TRACKING_ID should be large enough to ensure
+unique identification of a contact maintained over an extended period of
+time. For type B devices, this event is handled by input core; drivers
+should instead use input_mt_report_slot_state().
 
 
 Event Computation
@@ -301,18 +315,19 @@ and with ORIENTATION, one can detect twisting of fingers.
 Notes
 -----
 
-In order to stay compatible with existing applications, the data
-reported in a finger packet must not be recognized as single-touch
-events. In addition, all finger data must bypass input filtering,
-since subsequent events of the same type refer to different fingers.
+In order to stay compatible with existing applications, the data reported
+in a finger packet must not be recognized as single-touch events.
+
+For type A devices, all finger data bypasses input filtering, since
+subsequent events of the same type refer to different fingers.
 
-The first kernel driver to utilize the MT protocol is the bcm5974 driver,
-where examples can be found.
+For example usage of the type A protocol, see the bcm5974 driver. For
+example usage of the type B protocol, see the hid-egalax driver.
 
 [1] With the extension ABS_MT_APPROACH_X and ABS_MT_APPROACH_Y, the
 difference between the contact position and the approaching tool position
 could be used to derive tilt.
 [2] The list can of course be extended.
-[3] Multitouch X driver project: http://bitmath.org/code/multitouch/.
+[3] The mtdev project: http://bitmath.org/code/mtdev/.
 [4] See the section on event computation.
 [5] See the section on finger tracking.
diff --git a/MAINTAINERS b/MAINTAINERS
index 0094224ca79b..a9d3a1343698 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3020,8 +3020,10 @@ F:	drivers/input/
 INPUT MULTITOUCH (MT) PROTOCOL
 M:	Henrik Rydberg <rydberg@euromail.se>
 L:	linux-input@vger.kernel.org
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/rydberg/input-mt.git
 S:	Maintained
 F:	Documentation/input/multi-touch-protocol.txt
+F:	drivers/input/input-mt.c
 K:	\b(ABS|SYN)_MT_
 
 INTEL IDLE DRIVER
diff --git a/arch/arm/plat-spear/include/plat/keyboard.h b/arch/arm/plat-spear/include/plat/keyboard.h
new file mode 100644
index 000000000000..68b5394fc583
--- /dev/null
+++ b/arch/arm/plat-spear/include/plat/keyboard.h
@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2010 ST Microelectronics
+ * Rajeev Kumar<rajeev-dlh.kumar@st.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#ifndef __PLAT_KEYBOARD_H
+#define __PLAT_KEYBOARD_H
+
+#include <linux/bitops.h>
+#include <linux/input.h>
+#include <linux/input/matrix_keypad.h>
+#include <linux/types.h>
+
+#define DECLARE_KEYMAP(_name) \
+int _name[] = { \
+	KEY(0, 0, KEY_ESC), \
+	KEY(0, 1, KEY_1), \
+	KEY(0, 2, KEY_2), \
+	KEY(0, 3, KEY_3), \
+	KEY(0, 4, KEY_4), \
+	KEY(0, 5, KEY_5), \
+	KEY(0, 6, KEY_6), \
+	KEY(0, 7, KEY_7), \
+	KEY(0, 8, KEY_8), \
+	KEY(1, 0, KEY_9), \
+	KEY(1, 1, KEY_MINUS), \
+	KEY(1, 2, KEY_EQUAL), \
+	KEY(1, 3, KEY_BACKSPACE), \
+	KEY(1, 4, KEY_TAB), \
+	KEY(1, 5, KEY_Q), \
+	KEY(1, 6, KEY_W), \
+	KEY(1, 7, KEY_E), \
+	KEY(1, 8, KEY_R), \
+	KEY(2, 0, KEY_T), \
+	KEY(2, 1, KEY_Y), \
+	KEY(2, 2, KEY_U), \
+	KEY(2, 3, KEY_I), \
+	KEY(2, 4, KEY_O), \
+	KEY(2, 5, KEY_P), \
+	KEY(2, 6, KEY_LEFTBRACE), \
+	KEY(2, 7, KEY_RIGHTBRACE), \
+	KEY(2, 8, KEY_ENTER), \
+	KEY(3, 0, KEY_LEFTCTRL), \
+	KEY(3, 1, KEY_A), \
+	KEY(3, 2, KEY_S), \
+	KEY(3, 3, KEY_D), \
+	KEY(3, 4, KEY_F), \
+	KEY(3, 5, KEY_G), \
+	KEY(3, 6, KEY_H), \
+	KEY(3, 7, KEY_J), \
+	KEY(3, 8, KEY_K), \
+	KEY(4, 0, KEY_L), \
+	KEY(4, 1, KEY_SEMICOLON), \
+	KEY(4, 2, KEY_APOSTROPHE), \
+	KEY(4, 3, KEY_GRAVE), \
+	KEY(4, 4, KEY_LEFTSHIFT), \
+	KEY(4, 5, KEY_BACKSLASH), \
+	KEY(4, 6, KEY_Z), \
+	KEY(4, 7, KEY_X), \
+	KEY(4, 8, KEY_C), \
+	KEY(4, 0, KEY_L), \
+	KEY(4, 1, KEY_SEMICOLON), \
+	KEY(4, 2, KEY_APOSTROPHE), \
+	KEY(4, 3, KEY_GRAVE), \
+	KEY(4, 4, KEY_LEFTSHIFT), \
+	KEY(4, 5, KEY_BACKSLASH), \
+	KEY(4, 6, KEY_Z), \
+	KEY(4, 7, KEY_X), \
+	KEY(4, 8, KEY_C), \
+	KEY(4, 0, KEY_L), \
+	KEY(4, 1, KEY_SEMICOLON), \
+	KEY(4, 2, KEY_APOSTROPHE), \
+	KEY(4, 3, KEY_GRAVE), \
+	KEY(4, 4, KEY_LEFTSHIFT), \
+	KEY(4, 5, KEY_BACKSLASH), \
+	KEY(4, 6, KEY_Z), \
+	KEY(4, 7, KEY_X), \
+	KEY(4, 8, KEY_C), \
+	KEY(5, 0, KEY_V), \
+	KEY(5, 1, KEY_B), \
+	KEY(5, 2, KEY_N), \
+	KEY(5, 3, KEY_M), \
+	KEY(5, 4, KEY_COMMA), \
+	KEY(5, 5, KEY_DOT), \
+	KEY(5, 6, KEY_SLASH), \
+	KEY(5, 7, KEY_RIGHTSHIFT), \
+	KEY(5, 8, KEY_KPASTERISK), \
+	KEY(6, 0, KEY_LEFTALT), \
+	KEY(6, 1, KEY_SPACE), \
+	KEY(6, 2, KEY_CAPSLOCK), \
+	KEY(6, 3, KEY_F1), \
+	KEY(6, 4, KEY_F2), \
+	KEY(6, 5, KEY_F3), \
+	KEY(6, 6, KEY_F4), \
+	KEY(6, 7, KEY_F5), \
+	KEY(6, 8, KEY_F6), \
+	KEY(7, 0, KEY_F7), \
+	KEY(7, 1, KEY_F8), \
+	KEY(7, 2, KEY_F9), \
+	KEY(7, 3, KEY_F10), \
+	KEY(7, 4, KEY_NUMLOCK), \
+	KEY(7, 5, KEY_SCROLLLOCK), \
+	KEY(7, 6, KEY_KP7), \
+	KEY(7, 7, KEY_KP8), \
+	KEY(7, 8, KEY_KP9), \
+	KEY(8, 0, KEY_KPMINUS), \
+	KEY(8, 1, KEY_KP4), \
+	KEY(8, 2, KEY_KP5), \
+	KEY(8, 3, KEY_KP6), \
+	KEY(8, 4, KEY_KPPLUS), \
+	KEY(8, 5, KEY_KP1), \
+	KEY(8, 6, KEY_KP2), \
+	KEY(8, 7, KEY_KP3), \
+	KEY(8, 8, KEY_KP0), \
+}
+
+/**
+ * struct kbd_platform_data - spear keyboard platform data
+ * keymap: pointer to keymap data (table and size)
+ * rep: enables key autorepeat
+ *
+ * This structure is supposed to be used by platform code to supply
+ * keymaps to drivers that implement keyboards.
+ */
+struct kbd_platform_data {
+	const struct matrix_keymap_data *keymap;
+	bool rep;
+};
+
+/* This function is used to set platform data field of pdev->dev */
+static inline void
+kbd_set_plat_data(struct platform_device *pdev, struct kbd_platform_data *data)
+{
+	pdev->dev.platform_data = data;
+}
+
+#endif /* __PLAT_KEYBOARD_H */
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 3052e2969ad0..401acecc7f32 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -154,7 +154,8 @@ config HID_EGALAX
 	tristate "eGalax multi-touch panel"
 	depends on USB_HID
 	---help---
-	Support for the eGalax dual-touch panel.
+	Support for the eGalax dual-touch panels, including the
+	Joojoo and Wetab tablets.
 
 config HID_ELECOM
 	tristate "ELECOM BM084 bluetooth mouse"
diff --git a/drivers/hid/hid-3m-pct.c b/drivers/hid/hid-3m-pct.c
index 02d8cd3b1b1b..4fb7c7528d16 100644
--- a/drivers/hid/hid-3m-pct.c
+++ b/drivers/hid/hid-3m-pct.c
@@ -19,6 +19,7 @@
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/usb.h>
+#include <linux/input/mt.h>
 
 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
 MODULE_DESCRIPTION("3M PCT multitouch panels");
@@ -27,8 +28,6 @@ MODULE_LICENSE("GPL");
 #include "hid-ids.h"
 
 #define MAX_SLOTS		60
-#define MAX_TRKID		USHRT_MAX
-#define MAX_EVENTS		360
 
 /* estimated signal-to-noise ratios */
 #define SN_MOVE			2048
@@ -36,14 +35,11 @@ MODULE_LICENSE("GPL");
 
 struct mmm_finger {
 	__s32 x, y, w, h;
-	__u16 id;
-	bool prev_touch;
 	bool touch, valid;
 };
 
 struct mmm_data {
 	struct mmm_finger f[MAX_SLOTS];
-	__u16 id;
 	__u8 curid;
 	__u8 nexp, nreal;
 	bool touch, valid;
@@ -117,14 +113,7 @@ static int mmm_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 					0, 1, 0, 0);
 			return 1;
 		case HID_DG_CONTACTID:
-			field->logical_maximum = MAX_TRKID;
-			hid_map_usage(hi, usage, bit, max,
-					EV_ABS, ABS_MT_TRACKING_ID);
-			input_set_abs_params(hi->input, ABS_MT_TRACKING_ID,
-					     0, MAX_TRKID, 0, 0);
-			if (!hi->input->mt)
-				input_mt_create_slots(hi->input, MAX_SLOTS);
-			input_set_events_per_packet(hi->input, MAX_EVENTS);
+			input_mt_init_slots(hi->input, MAX_SLOTS);
 			return 1;
 		}
 		/* let hid-input decide for the others */
@@ -154,7 +143,6 @@ static int mmm_input_mapped(struct hid_device *hdev, struct hid_input *hi,
  */
 static void mmm_filter_event(struct mmm_data *md, struct input_dev *input)
 {
-	struct mmm_finger *oldest = 0;
 	int i;
 	for (i = 0; i < MAX_SLOTS; ++i) {
 		struct mmm_finger *f = &md->f[i];
@@ -163,6 +151,7 @@ static void mmm_filter_event(struct mmm_data *md, struct input_dev *input)
 			continue;
 		}
 		input_mt_slot(input, i);
+		input_mt_report_slot_state(input, MT_TOOL_FINGER, f->touch);
 		if (f->touch) {
 			/* this finger is on the screen */
 			int wide = (f->w > f->h);
@@ -170,33 +159,16 @@ static void mmm_filter_event(struct mmm_data *md, struct input_dev *input)
 			int major = max(f->w, f->h) >> 1;
 			int minor = min(f->w, f->h) >> 1;
 
-			if (!f->prev_touch)
-				f->id = md->id++;
-			input_event(input, EV_ABS, ABS_MT_TRACKING_ID, f->id);
 			input_event(input, EV_ABS, ABS_MT_POSITION_X, f->x);
 			input_event(input, EV_ABS, ABS_MT_POSITION_Y, f->y);
 			input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
 			input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
 			input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
-			/* touchscreen emulation: pick the oldest contact */
-			if (!oldest || ((f->id - oldest->id) & (SHRT_MAX + 1)))
-				oldest = f;
-		} else {
-			/* this finger took off the screen */
-			input_event(input, EV_ABS, ABS_MT_TRACKING_ID, -1);
 		}
-		f->prev_touch = f->touch;
 		f->valid = 0;
 	}
 
-	/* touchscreen emulation */
-	if (oldest) {
-		input_event(input, EV_KEY, BTN_TOUCH, 1);
-		input_event(input, EV_ABS, ABS_X, oldest->x);
-		input_event(input, EV_ABS, ABS_Y, oldest->y);
-	} else {
-		input_event(input, EV_KEY, BTN_TOUCH, 0);
-	}
+	input_mt_report_pointer_emulation(input, true);
 	input_sync(input);
 }
 
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 515345b11ac9..88668ae96945 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1300,6 +1300,9 @@ static const struct hid_device_id hid_blacklist[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH2) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH3) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH4) },
 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
diff --git a/drivers/hid/hid-egalax.c b/drivers/hid/hid-egalax.c
index 54b017ad258d..16566fcc08a3 100644
--- a/drivers/hid/hid-egalax.c
+++ b/drivers/hid/hid-egalax.c
@@ -2,6 +2,8 @@
  *  HID driver for eGalax dual-touch panels
  *
  *  Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
+ *  Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
+ *  Copyright (c) 2010 Canonical, Ltd.
  *
  */
 
@@ -16,6 +18,7 @@
 #include <linux/hid.h>
 #include <linux/module.h>
 #include <linux/usb.h>
+#include <linux/input/mt.h>
 #include <linux/slab.h>
 #include "usbhid/usbhid.h"
 
@@ -25,38 +28,53 @@ MODULE_LICENSE("GPL");
 
 #include "hid-ids.h"
 
+#define MAX_SLOTS		2
+
+/* estimated signal-to-noise ratios */
+#define SN_MOVE			4096
+#define SN_PRESSURE		32
+
 struct egalax_data {
-	__u16 x, y, z;
-	__u8 id;
-	bool first;		/* is this the first finger in the frame? */
-	bool valid;		/* valid finger data, or just placeholder? */
-	bool activity;		/* at least one active finger previously? */
-	__u16 lastx, lasty, lastz;	/* latest valid (x, y, z) in the frame */
+	int valid;
+	int slot;
+	int touch;
+	int x, y, z;
 };
 
+static void set_abs(struct input_dev *input, unsigned int code,