Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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diff --git a/Documentation/input/devices/sentelic.rst b/Documentation/input/devices/sentelic.rst
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+.. include:: <isonum.txt>
+
+=================
+Sentelic Touchpad
+=================
+
+
+:Copyright: |copy| 2002-2011 Sentelic Corporation.
+
+:Last update: Dec-07-2011
+
+Finger Sensing Pad Intellimouse Mode (scrolling wheel, 4th and 5th buttons)
+============================================================================
+
+A) MSID 4: Scrolling wheel mode plus Forward page(4th button) and Backward
+   page (5th button)
+
+1. Set sample rate to 200;
+2. Set sample rate to 200;
+3. Set sample rate to 80;
+4. Issuing the "Get device ID" command (0xF2) and waits for the response;
+5. FSP will respond 0x04.
+
+::
+
+    Packet 1
+    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
+    BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
+      1   |Y|X|y|x|1|M|R|L|  2  |X|X|X|X|X|X|X|X|  3 |Y|Y|Y|Y|Y|Y|Y|Y|  4 | | |B|F|W|W|W|W|
+	  |---------------|     |---------------|    |---------------|    |---------------|
+
+    Byte 1: Bit7 => Y overflow
+	    Bit6 => X overflow
+	    Bit5 => Y sign bit
+	    Bit4 => X sign bit
+	    Bit3 => 1
+	    Bit2 => Middle Button, 1 is pressed, 0 is not pressed.
+	    Bit1 => Right Button, 1 is pressed, 0 is not pressed.
+	    Bit0 => Left Button, 1 is pressed, 0 is not pressed.
+    Byte 2: X Movement(9-bit 2's complement integers)
+    Byte 3: Y Movement(9-bit 2's complement integers)
+    Byte 4: Bit3~Bit0 => the scrolling wheel's movement since the last data report.
+			valid values, -8 ~ +7
+	    Bit4 => 1 = 4th mouse button is pressed, Forward one page.
+		    0 = 4th mouse button is not pressed.
+	    Bit5 => 1 = 5th mouse button is pressed, Backward one page.
+		    0 = 5th mouse button is not pressed.
+
+B) MSID 6: Horizontal and Vertical scrolling
+
+- Set bit 1 in register 0x40 to 1
+
+FSP replaces scrolling wheel's movement as 4 bits to show horizontal and
+vertical scrolling.
+
+::
+
+    Packet 1
+    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
+    BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
+      1   |Y|X|y|x|1|M|R|L|  2  |X|X|X|X|X|X|X|X|  3 |Y|Y|Y|Y|Y|Y|Y|Y|  4 | | |B|F|r|l|u|d|
+	  |---------------|     |---------------|    |---------------|    |---------------|
+
+    Byte 1: Bit7 => Y overflow
+	    Bit6 => X overflow
+	    Bit5 => Y sign bit
+	    Bit4 => X sign bit
+	    Bit3 => 1
+	    Bit2 => Middle Button, 1 is pressed, 0 is not pressed.
+	    Bit1 => Right Button, 1 is pressed, 0 is not pressed.
+	    Bit0 => Left Button, 1 is pressed, 0 is not pressed.
+    Byte 2: X Movement(9-bit 2's complement integers)
+    Byte 3: Y Movement(9-bit 2's complement integers)
+    Byte 4: Bit0 => the Vertical scrolling movement downward.
+	    Bit1 => the Vertical scrolling movement upward.
+	    Bit2 => the Horizontal scrolling movement leftward.
+	    Bit3 => the Horizontal scrolling movement rightward.
+	    Bit4 => 1 = 4th mouse button is pressed, Forward one page.
+		    0 = 4th mouse button is not pressed.
+	    Bit5 => 1 = 5th mouse button is pressed, Backward one page.
+		    0 = 5th mouse button is not pressed.
+
+C) MSID 7
+
+FSP uses 2 packets (8 Bytes) to represent Absolute Position.
+so we have PACKET NUMBER to identify packets.
+
+  If PACKET NUMBER is 0, the packet is Packet 1.
+  If PACKET NUMBER is 1, the packet is Packet 2.
+  Please count this number in program.
+
+MSID6 special packet will be enable at the same time when enable MSID 7.
+
+Absolute position for STL3886-G0
+================================
+
+1. Set bit 2 or 3 in register 0x40 to 1
+2. Set bit 6 in register 0x40 to 1
+
+::
+
+    Packet 1 (ABSOLUTE POSITION)
+    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
+    BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
+      1   |0|1|V|1|1|M|R|L|  2  |X|X|X|X|X|X|X|X|  3 |Y|Y|Y|Y|Y|Y|Y|Y|  4 |r|l|d|u|X|X|Y|Y|
+	  |---------------|     |---------------|    |---------------|    |---------------|
+
+    Byte 1: Bit7~Bit6 => 00, Normal data packet
+		    => 01, Absolute coordination packet
+		    => 10, Notify packet
+	    Bit5 => valid bit
+	    Bit4 => 1
+	    Bit3 => 1
+	    Bit2 => Middle Button, 1 is pressed, 0 is not pressed.
+	    Bit1 => Right Button, 1 is pressed, 0 is not pressed.
+	    Bit0 => Left Button, 1 is pressed, 0 is not pressed.
+    Byte 2: X coordinate (xpos[9:2])
+    Byte 3: Y coordinate (ypos[9:2])
+    Byte 4: Bit1~Bit0 => Y coordinate (xpos[1:0])
+	    Bit3~Bit2 => X coordinate (ypos[1:0])
+	    Bit4 => scroll up
+	    Bit5 => scroll down
+	    Bit6 => scroll left
+	    Bit7 => scroll right
+
+    Notify Packet for G0
+    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
+    BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
+      1   |1|0|0|1|1|M|R|L|  2  |C|C|C|C|C|C|C|C|  3 |M|M|M|M|M|M|M|M|  4 |0|0|0|0|0|0|0|0|
+	  |---------------|     |---------------|    |---------------|    |---------------|
+
+    Byte 1: Bit7~Bit6 => 00, Normal data packet
+		    => 01, Absolute coordination packet
+		    => 10, Notify packet
+	    Bit5 => 0
+	    Bit4 => 1
+	    Bit3 => 1
+	    Bit2 => Middle Button, 1 is pressed, 0 is not pressed.
+	    Bit1 => Right Button, 1 is pressed, 0 is not pressed.
+	    Bit0 => Left Button, 1 is pressed, 0 is not pressed.
+    Byte 2: Message Type => 0x5A (Enable/Disable status packet)
+	    Mode Type => 0xA5 (Normal/Icon mode status)
+    Byte 3: Message Type => 0x00 (Disabled)
+			=> 0x01 (Enabled)
+	    Mode Type    => 0x00 (Normal)
+			=> 0x01 (Icon)
+    Byte 4: Bit7~Bit0 => Don't Care
+
+Absolute position for STL3888-Ax
+================================
+
+::
+
+    Packet 1 (ABSOLUTE POSITION)
+    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
+    BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
+      1   |0|1|V|A|1|L|0|1|  2  |X|X|X|X|X|X|X|X|  3 |Y|Y|Y|Y|Y|Y|Y|Y|  4 |x|x|y|y|X|X|Y|Y|
+	  |---------------|     |---------------|    |---------------|    |---------------|
+
+    Byte 1: Bit7~Bit6 => 00, Normal data packet
+		    => 01, Absolute coordination packet
+		    => 10, Notify packet
+		    => 11, Normal data packet with on-pad click
+	    Bit5 => Valid bit, 0 means that the coordinate is invalid or finger up.
+		    When both fingers are up, the last two reports have zero valid
+		    bit.
+	    Bit4 => arc
+	    Bit3 => 1
+	    Bit2 => Left Button, 1 is pressed, 0 is released.
+	    Bit1 => 0
+	    Bit0 => 1
+    Byte 2: X coordinate (xpos[9:2])
+    Byte 3: Y coordinate (ypos[9:2])
+    Byte 4: Bit1~Bit0 => Y coordinate (xpos[1:0])
+	    Bit3~Bit2 => X coordinate (ypos[1:0])
+	    Bit5~Bit4 => y1_g
+	    Bit7~Bit6 => x1_g
+
+    Packet 2 (ABSOLUTE POSITION)
+    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
+    BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
+      1   |0|1|V|A|1|R|1|0|  2  |X|X|X|X|X|X|X|X|  3 |Y|Y|Y|Y|Y|Y|Y|Y|  4 |x|x|y|y|X|X|Y|Y|
+	  |---------------|     |---------------|    |---------------|    |---------------|
+
+    Byte 1: Bit7~Bit6 => 00, Normal data packet
+		    => 01, Absolute coordinates packet
+		    => 10, Notify packet
+		    => 11, Normal data packet with on-pad click
+	    Bit5 => Valid bit, 0 means that the coordinate is invalid or finger up.
+		    When both fingers are up, the last two reports have zero valid
+		    bit.
+	    Bit4 => arc
+	    Bit3 => 1
+	    Bit2 => Right Button, 1 is pressed, 0 is released.
+	    Bit1 => 1
+	    Bit0 => 0
+    Byte 2: X coordinate (xpos[9:2])
+    Byte 3: Y coordinate (ypos[9:2])
+    Byte 4: Bit1~Bit0 => Y coordinate (xpos[1:0])
+	    Bit3~Bit2 => X coordinate (ypos[1:0])
+	    Bit5~Bit4 => y2_g
+	    Bit7~Bit6 => x2_g
+
+    Notify Packet for STL3888-Ax
+    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
+    BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
+      1   |1|0|1|P|1|M|R|L|  2  |C|C|C|C|C|C|C|C|  3 |0|0|F|F|0|0|0|i|  4 |r|l|d|u|0|0|0|0|
+	  |---------------|     |---------------|    |---------------|    |---------------|
+
+    Byte 1: Bit7~Bit6 => 00, Normal data packet
+		    => 01, Absolute coordinates packet
+		    => 10, Notify packet
+		    => 11, Normal data packet with on-pad click
+	    Bit5 => 1
+	    Bit4 => when in absolute coordinates mode (valid when EN_PKT_GO is 1):
+		    0: left button is generated by the on-pad command
+		    1: left button is generated by the external button
+	    Bit3 => 1
+	    Bit2 => Middle Button, 1 is pressed, 0 is not pressed.
+	    Bit1 => Right Button, 1 is pressed, 0 is not pressed.
+	    Bit0 => Left Button, 1 is pressed, 0 is not pressed.
+    Byte 2: Message Type => 0xB7 (Multi Finger, Multi Coordinate mode)
+    Byte 3: Bit7~Bit6 => Don't care
+	    Bit5~Bit4 => Number of fingers
+	    Bit3~Bit1 => Reserved
+	    Bit0 => 1: enter gesture mode; 0: leaving gesture mode
+    Byte 4: Bit7 => scroll right button
+	    Bit6 => scroll left button
+	    Bit5 => scroll down button
+	    Bit4 => scroll up button
+		* Note that if gesture and additional button (Bit4~Bit7)
+		happen at the same time, the button information will not
+		be sent.
+	    Bit3~Bit0 => Reserved
+
+Sample sequence of Multi-finger, Multi-coordinate mode:
+
+	notify packet (valid bit == 1), abs pkt 1, abs pkt 2, abs pkt 1,
+	abs pkt 2, ..., notify packet (valid bit == 0)
+
+Absolute position for STL3888-B0
+================================
+
+::
+
+    Packet 1(ABSOLUTE POSITION)
+    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
+    BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
+      1   |0|1|V|F|1|0|R|L|  2  |X|X|X|X|X|X|X|X|  3 |Y|Y|Y|Y|Y|Y|Y|Y|  4 |r|l|u|d|X|X|Y|Y|
+	  |---------------|     |---------------|    |---------------|    |---------------|
+
+    Byte 1: Bit7~Bit6 => 00, Normal data packet
+		    => 01, Absolute coordinates packet
+		    => 10, Notify packet
+		    => 11, Normal data packet with on-pad click
+	    Bit5 => Valid bit, 0 means that the coordinate is invalid or finger up.
+		    When both fingers are up, the last two reports have zero valid
+		    bit.
+	    Bit4 => finger up/down information. 1: finger down, 0: finger up.
+	    Bit3 => 1
+	    Bit2 => finger index, 0 is the first finger, 1 is the second finger.
+	    Bit1 => Right Button, 1 is pressed, 0 is not pressed.
+	    Bit0 => Left Button, 1 is pressed, 0 is not pressed.
+    Byte 2: X coordinate (xpos[9:2])
+    Byte 3: Y coordinate (ypos[9:2])
+    Byte 4: Bit1~Bit0 => Y coordinate (xpos[1:0])
+	    Bit3~Bit2 => X coordinate (ypos[1:0])
+	    Bit4 => scroll down button
+	    Bit5 => scroll up button
+	    Bit6 => scroll left button
+	    Bit7 => scroll right button
+
+    Packet 2 (ABSOLUTE POSITION)
+    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
+    BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
+      1   |0|1|V|F|1|1|R|L|  2  |X|X|X|X|X|X|X|X|  3 |Y|Y|Y|Y|Y|Y|Y|Y|  4 |r|l|u|d|X|X|Y|Y|
+	  |---------------|     |---------------|    |---------------|    |---------------|
+
+    Byte 1: Bit7~Bit6 => 00, Normal data packet
+		    => 01, Absolute coordination packet
+		    => 10, Notify packet
+		    => 11, Normal data packet with on-pad click
+	    Bit5 => Valid bit, 0 means that the coordinate is invalid or finger up.
+		    When both fingers are up, the last two reports have zero valid
+		    bit.
+	    Bit4 => finger up/down information. 1: finger down, 0: finger up.
+	    Bit3 => 1
+	    Bit2 => finger index, 0 is the first finger, 1 is the second finger.
+	    Bit1 => Right Button, 1 is pressed, 0 is not pressed.
+	    Bit0 => Left Button, 1 is pressed, 0 is not pressed.
+    Byte 2: X coordinate (xpos[9:2])
+    Byte 3: Y coordinate (ypos[9:2])
+    Byte 4: Bit1~Bit0 => Y coordinate (xpos[1:0])
+	    Bit3~Bit2 => X coordinate (ypos[1:0])
+	    Bit4 => scroll down button
+	    Bit5 => scroll up button
+	    Bit6 => scroll left button
+	    Bit7 => scroll right button
+
+Notify Packet for STL3888-B0::
+
+    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
+    BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
+      1   |1|0|1|P|1|M|R|L|  2  |C|C|C|C|C|C|C|C|  3 |0|0|F|F|0|0|0|i|  4 |r|l|u|d|0|0|0|0|
+	  |---------------|     |---------------|    |---------------|    |---------------|
+
+    Byte 1: Bit7~Bit6 => 00, Normal data packet
+		    => 01, Absolute coordination packet
+		    => 10, Notify packet
+		    => 11, Normal data packet with on-pad click
+	    Bit5 => 1
+	    Bit4 => when in absolute coordinates mode (valid when EN_PKT_GO is 1):
+		    0: left button is generated by the on-pad command
+		    1: left button is generated by the external button
+	    Bit3 => 1
+	    Bit2 => Middle Button, 1 is pressed, 0 is not pressed.
+	    Bit1 => Right Button, 1 is pressed, 0 is not pressed.
+	    Bit0 => Left Button, 1 is pressed, 0 is not pressed.
+    Byte 2: Message Type => 0xB7 (Multi Finger, Multi Coordinate mode)
+    Byte 3: Bit7~Bit6 => Don't care
+	    Bit5~Bit4 => Number of fingers
+	    Bit3~Bit1 => Reserved
+	    Bit0 => 1: enter gesture mode; 0: leaving gesture mode
+    Byte 4: Bit7 => scroll right button
+	    Bit6 => scroll left button
+	    Bit5 => scroll up button
+	    Bit4 => scroll down button
+		* Note that if gesture and additional button(Bit4~Bit7)
+		happen at the same time, the button information will not
+		be sent.
+	    Bit3~Bit0 => Reserved
+
+Sample sequence of Multi-finger, Multi-coordinate mode:
+
+	notify packet (valid bit == 1), abs pkt 1, abs pkt 2, abs pkt 1,
+	abs pkt 2, ..., notify packet (valid bit == 0)
+
+Absolute position for STL3888-Cx and STL3888-Dx
+===============================================
+
+::
+
+    Single Finger, Absolute Coordinate Mode (SFAC)
+    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
+    BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
+      1   |0|1|0|P|1|M|R|L|  2  |X|X|X|X|X|X|X|X|  3 |Y|Y|Y|Y|Y|Y|Y|Y|  4 |r|l|B|F|X|X|Y|Y|
+	  |---------------|     |---------------|    |---------------|    |---------------|
+
+    Byte 1: Bit7~Bit6 => 00, Normal data packet
+		    => 01, Absolute coordinates packet
+		    => 10, Notify packet
+	    Bit5 => Coordinate mode(always 0 in SFAC mode):
+		    0: single-finger absolute coordinates (SFAC) mode
+		    1: multi-finger, multiple coordinates (MFMC) mode
+	    Bit4 => 0: The LEFT button is generated by on-pad command (OPC)
+		    1: The LEFT button is generated by external button
+		    Default is 1 even if the LEFT button is not pressed.
+	    Bit3 => Always 1, as specified by PS/2 protocol.
+	    Bit2 => Middle Button, 1 is pressed, 0 is not pressed.
+	    Bit1 => Right Button, 1 is pressed, 0 is not pressed.
+	    Bit0 => Left Button, 1 is pressed, 0 is not pressed.
+    Byte 2: X coordinate (xpos[9:2])
+    Byte 3: Y coordinate (ypos[9:2])
+    Byte 4: Bit1~Bit0 => Y coordinate (xpos[1:0])
+	    Bit3~Bit2 => X coordinate (ypos[1:0])
+	    Bit4 => 4th mouse button(forward one page)
+	    Bit5 => 5th mouse button(backward one page)
+	    Bit6 => scroll left button
+	    Bit7 => scroll right button
+
+    Multi Finger, Multiple Coordinates Mode (MFMC):
+    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
+    BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
+      1   |0|1|1|P|1|F|R|L|  2  |X|X|X|X|X|X|X|X|  3 |Y|Y|Y|Y|Y|Y|Y|Y|  4 |r|l|B|F|X|X|Y|Y|
+	  |---------------|     |---------------|    |---------------|    |---------------|
+
+    Byte 1: Bit7~Bit6 => 00, Normal data packet
+		    => 01, Absolute coordination packet
+		    => 10, Notify packet
+	    Bit5 => Coordinate mode (always 1 in MFMC mode):
+		    0: single-finger absolute coordinates (SFAC) mode
+		    1: multi-finger, multiple coordinates (MFMC) mode
+	    Bit4 => 0: The LEFT button is generated by on-pad command (OPC)
+		    1: The LEFT button is generated by external button
+		    Default is 1 even if the LEFT button is not pressed.
+	    Bit3 => Always 1, as specified by PS/2 protocol.
+	    Bit2 => Finger index, 0 is the first finger, 1 is the second finger.
+		    If bit 1 and 0 are all 1 and bit 4 is 0, the middle external
+		    button is pressed.
+	    Bit1 => Right Button, 1 is pressed, 0 is not pressed.
+	    Bit0 => Left Button, 1 is pressed, 0 is not pressed.
+    Byte 2: X coordinate (xpos[9:2])
+    Byte 3: Y coordinate (ypos[9:2])
+    Byte 4: Bit1~Bit0 => Y coordinate (xpos[1:0])
+	    Bit3~Bit2 => X coordinate (ypos[1:0])
+	    Bit4 => 4th mouse button(forward one page)
+	    Bit5 => 5th mouse button(backward one page)
+	    Bit6 => scroll left button
+	    Bit7 => scroll right button
+
+When one of the two fingers is up, the device will output four consecutive
+MFMC#0 report packets with zero X and Y to represent 1st finger is up or
+four consecutive MFMC#1 report packets with zero X and Y to represent that
+the 2nd finger is up.  On the other hand, if both fingers are up, the device
+will output four consecutive single-finger, absolute coordinate(SFAC) packets
+with zero X and Y.
+
+Notify Packet for STL3888-Cx/Dx::
+
+    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
+    BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
+      1   |1|0|0|P|1|M|R|L|  2  |C|C|C|C|C|C|C|C|  3 |0|0|F|F|0|0|0|i|  4 |r|l|u|d|0|0|0|0|
+	  |---------------|     |---------------|    |---------------|    |---------------|
+
+    Byte 1: Bit7~Bit6 => 00, Normal data packet
+		    => 01, Absolute coordinates packet
+		    => 10, Notify packet
+	    Bit5 => Always 0
+	    Bit4 => 0: The LEFT button is generated by on-pad command(OPC)
+		    1: The LEFT button is generated by external button
+		    Default is 1 even if the LEFT button is not pressed.
+	    Bit3 => 1
+	    Bit2 => Middle Button, 1 is pressed, 0 is not pressed.
+	    Bit1 => Right Button, 1 is pressed, 0 is not pressed.
+	    Bit0 => Left Button, 1 is pressed, 0 is not pressed.
+    Byte 2: Message type:
+	    0xba => gesture information
+	    0xc0 => one finger hold-rotating gesture
+    Byte 3: The first parameter for the received message:
+	    0xba => gesture ID (refer to the 'Gesture ID' section)
+	    0xc0 => region ID
+    Byte 4: The second parameter for the received message:
+	    0xba => N/A
+	    0xc0 => finger up/down information
+
+Sample sequence of Multi-finger, Multi-coordinates mode:
+
+	notify packet (valid bit == 1), MFMC packet 1 (byte 1, bit 2 == 0),
+	MFMC packet 2 (byte 1, bit 2 == 1), MFMC packet 1, MFMC packet 2,
+	..., notify packet (valid bit == 0)
+
+	That is, when the device is in MFMC mode, the host will receive
+	interleaved absolute coordinate packets for each finger.
+
+FSP Enable/Disable packet
+=========================
+
+::
+
+    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
+    BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
+      1   |Y|X|0|0|1|M|R|L|  2  |0|1|0|1|1|0|1|E|  3 | | | | | | | | |  4 | | | | | | | | |
+	  |---------------|     |---------------|    |---------------|    |---------------|
+
+    FSP will send out enable/disable packet when FSP receive PS/2 enable/disable
+    command. Host will receive the packet which Middle, Right, Left button will
+    be set. The packet only use byte 0 and byte 1 as a pattern of original packet.
+    Ignore the other bytes of the packet.
+
+    Byte 1: Bit7 => 0, Y overflow
+	    Bit6 => 0, X overflow
+	    Bit5 => 0, Y sign bit
+	    Bit4 => 0, X sign bit
+	    Bit3 => 1
+	    Bit2 => 1, Middle Button
+	    Bit1 => 1, Right Button
+	    Bit0 => 1, Left Button
+    Byte 2: Bit7~1 => (0101101b)
+	    Bit0 => 1 = Enable
+		    0 = Disable
+    Byte 3: Don't care
+    Byte 4: Don't care (MOUSE ID 3, 4)
+    Byte 5~8: Don't care (Absolute packet)
+
+PS/2 Command Set
+================
+
+FSP supports basic PS/2 commanding set and modes, refer to following URL for
+details about PS/2 commands:
+
+http://www.computer-engineering.org/ps2mouse/
+
+Programming Sequence for Determining Packet Parsing Flow
+========================================================
+
+1. Identify FSP by reading device ID(0x00) and version(0x01) register
+
+2. For FSP version < STL3888 Cx, determine number of buttons by reading
+   the 'test mode status' (0x20) register::
+
+	buttons = reg[0x20] & 0x30
+
+	if buttons == 0x30 or buttons == 0x20:
+		# two/four buttons
+		Refer to 'Finger Sensing Pad PS/2 Mouse Intellimouse'
+		section A for packet parsing detail(ignore byte 4, bit ~ 7)
+	elif buttons == 0x10:
+		# 6 buttons
+		Refer to 'Finger Sensing Pad PS/2 Mouse Intellimouse'
+		section B for packet parsing detail
+	elif buttons == 0x00:
+		# 6 buttons
+		Refer to 'Finger Sensing Pad PS/2 Mouse Intellimouse'
+		section A for packet parsing detail
+
+3. For FSP version >= STL3888 Cx:
+	Refer to 'Finger Sensing Pad PS/2 Mouse Intellimouse'
+	section A for packet parsing detail (ignore byte 4, bit ~ 7)
+
+Programming Sequence for Register Reading/Writing
+=================================================
+
+Register inversion requirement:
+
+Following values needed to be inverted(the '~' operator in C) before being
+sent to FSP::
+
+	0xe8, 0xe9, 0xee, 0xf2, 0xf3 and 0xff.
+
+Register swapping requirement:
+
+Following values needed to have their higher 4 bits and lower 4 bits being
+swapped before being sent to FSP::
+
+	10, 20, 40, 60, 80, 100 and 200.
+
+Register reading sequence:
+
+	1. send 0xf3 PS/2 command to FSP;
+
+	2. send 0x66 PS/2 command to FSP;
+
+	3. send 0x88 PS/2 command to FSP;
+
+	4. send 0xf3 PS/2 command to FSP;
+
+	5. if the register address being to read is not required to be
+	inverted(refer to the 'Register inversion requirement' section),
+	goto step 6
+
+	  a. send 0x68 PS/2 command to FSP;
+
+	  b. send the inverted register address to FSP and goto step 8;
+
+	6. if the register address being to read is not required to be
+	swapped(refer to the 'Register swapping requirement' section),
+	goto step 7
+
+	  a. send 0xcc PS/2 command to FSP;
+
+	  b. send the swapped register address to FSP and goto step 8;
+
+	7. send 0x66 PS/2 command to FSP;
+
+	  a. send the original register address to FSP and goto step 8;
+
+	8. send 0xe9(status request) PS/2 command to FSP;
+
+	9. the 4th byte of the response read from FSP should be the
+	requested register value(?? indicates don't care byte)::
+
+		host: 0xe9
+		3888: 0xfa (??) (??) (val)
+
+	* Note that since the Cx release, the hardware will return 1's
+	  complement of the register value at the 3rd byte of status request
+	  result::
+
+		host: 0xe9
+		3888: 0xfa (??) (~val) (val)
+
+Register writing sequence:
+
+	1. send 0xf3 PS/2 command to FSP;
+
+	2. if the register address being to write is not required to be
+	inverted(refer to the 'Register inversion requirement' section),
+	goto step 3
+
+	  a. send 0x74 PS/2 command to FSP;
+
+	  b. send the inverted register address to FSP and goto step 5;
+
+	3. if the register address being to write is not required to be
+	swapped(refer to the 'Register swapping requirement' section),
+	goto step 4
+
+	  a. send 0x77 PS/2 command to FSP;
+
+	  b. send the swapped register address to FSP and goto step 5;
+
+	4. send 0x55 PS/2 command to FSP;
+
+	  a. send the register address to FSP and goto step 5;
+
+	5. send 0xf3 PS/2 command to FSP;
+
+	6. if the register value being to write is not required to be
+	inverted(refer to the 'Register inversion requirement' section),
+	goto step 7
+
+	  a. send 0x47 PS/2 command to FSP;
+
+	  b. send the inverted register value to FSP and goto step 9;
+
+	7. if the register value being to write is not required to be
+	swapped(refer to the 'Register swapping requirement' section),
+	goto step 8
+
+	  a. send 0x44 PS/2 command to FSP;
+
+	  b. send the swapped register value to FSP and goto step 9;
+
+	8. send 0x33 PS/2 command to FSP;
+
+	  a. send the register value to FSP;
+
+	9. the register writing sequence is completed.
+
+	* Since the Cx release, the hardware will return 1's
+	  complement of the register value at the 3rd byte of status request
+	  result. Host can optionally send another 0xe9 (status request) PS/2
+	  command to FSP at the end of register writing to verify that the
+	  register writing operation is successful (?? indicates don't care
+	  byte)::
+
+		host: 0xe9
+		3888: 0xfa (??) (~val) (val)
+
+Programming Sequence for Page Register Reading/Writing
+======================================================
+
+In order to overcome the limitation of maximum number of registers
+supported, the hardware separates register into different groups called
+'pages.' Each page is able to include up to 255 registers.
+
+The default page after power up is 0x82; therefore, if one has to get
+access to register 0x8301, one has to use following sequence to switch
+to page 0x83, then start reading/writing from/to offset 0x01 by using
+the register read/write sequence described in previous section.
+
+Page register reading sequence:
+
+	1. send 0xf3 PS/2 command to FSP;
+
+	2. send 0x66 PS/2 command to FSP;
+
+	3. send 0x88 PS/2 command to FSP;
+
+	4. send 0xf3 PS/2 command to FSP;
+
+	5. send 0x83 PS/2 command to FSP;
+
+	6. send 0x88 PS/2 command to FSP;
+
+	7. send 0xe9(status request) PS/2 command to FSP;
+
+	8. the response read from FSP should be the requested page value.
+
+
+Page register writing sequence:
+
+	1. send 0xf3 PS/2 command to FSP;
+
+	2. send 0x38 PS/2 command to FSP;
+
+	3. send 0x88 PS/2 command to FSP;
+
+	4. send 0xf3 PS/2 command to FSP;
+
+	5. if the page address being written is not required to be
+	inverted(refer to the 'Register inversion requirement' section),
+	goto step 6
+
+	  a. send 0x47 PS/2 command to FSP;
+
+	  b. send the inverted page address to FSP and goto step 9;
+
+	6. if the page address being written is not required to be
+	swapped(refer to the 'Register swapping requirement' section),
+	goto step 7
+
+	  a. send 0x44 PS/2 command to FSP;
+
+	  b. send the swapped page address to FSP and goto step 9;
+
+	7. send 0x33 PS/2 command to FSP;
+
+	8. send the page address to FSP;
+
+	9. the page register writing sequence is completed.
+
+Gesture ID
+==========
+
+Unlike other devices which sends multiple fingers' coordinates to host,
+FSP processes multiple fingers' coordinates internally and convert them
+into a 8 bits integer, namely 'Gesture ID.'  Following is a list of
+supported gesture IDs:
+
+	======= ==================================
+	ID	Description
+	======= ==================================
+	0x86	2 finger straight up
+	0x82	2 finger straight down
+	0x80	2 finger straight right
+	0x84	2 finger straight left
+	0x8f	2 finger zoom in
+	0x8b	2 finger zoom out
+	0xc0	2 finger curve, counter clockwise
+	0xc4	2 finger curve, clockwise
+	0x2e	3 finger straight up
+	0x2a	3 finger straight down
+	0x28	3 finger straight right
+	0x2c	3 finger straight left
+	0x38	palm
+	======= ==================================
+
+Register Listing
+================
+
+Registers are represented in 16 bits values. The higher 8 bits represent
+the page address and the lower 8 bits represent the relative offset within
+that particular page.  Refer to the 'Programming Sequence for Page Register
+Reading/Writing' section for instructions on how to change current page
+address::
+
+ offset	width		default	r/w	name
+ 0x8200	bit7~bit0	0x01	RO	device ID
+
+ 0x8201	bit7~bit0		RW	version ID
+					0xc1: STL3888 Ax
+					0xd0 ~ 0xd2: STL3888 Bx
+					0xe0 ~ 0xe1: STL3888 Cx
+					0xe2 ~ 0xe3: STL3888 Dx
+
+ 0x8202	bit7~bit0	0x01	RO	vendor ID
+
+ 0x8203	bit7~bit0	0x01	RO	product ID
+
+ 0x8204	bit3~bit0	0x01	RW	revision ID
+
+ 0x820b					test mode status 1
+	bit3		1	RO	0: rotate 180 degree
+					1: no rotation
+					*only supported by H/W prior to Cx
+
+ 0x820f					register file page control
+	bit2		0	RW	1: rotate 180 degree
+					0: no rotation
+					*supported since Cx
+
+	bit0		0	RW	1 to enable page 1 register files
+					*only supported by H/W prior to Cx
+
+ 0x8210				RW	system control 1
+	bit0		1	RW	Reserved, must be 1
+	bit1		0	RW	Reserved, must be 0
+	bit4		0	RW	Reserved, must be 0
+	bit5		1	RW	register clock gating enable
+					0: read only, 1: read/write enable
+	(Note that following registers does not require clock gating being
+	enabled prior to write: 05 06 07 08 09 0c 0f 10 11 12 16 17 18 23 2e
+	40 41 42 43.  In addition to that, this bit must be 1 when gesture
+	mode is enabled)
+
+ 0x8220					test mode status
+	bit5~bit4		RO	number of buttons
+					11 => 2, lbtn/rbtn
+					10 => 4, lbtn/rbtn/scru/scrd
+					01 => 6, lbtn/rbtn/scru/scrd/scrl/scrr
+					00 => 6, lbtn/rbtn/scru/scrd/fbtn/bbtn
+					*only supported by H/W prior to Cx
+
+ 0x8231				RW	on-pad command detection
+	bit7		0	RW	on-pad command left button down tag
+					enable
+					0: disable, 1: enable
+					*only supported by H/W prior to Cx
+
+ 0x8234				RW	on-pad command control 5
+	bit4~bit0	0x05	RW	XLO in 0s/4/1, so 03h = 0010.1b = 2.5
+	(Note that position unit is in 0.5 scanline)
+					*only supported by H/W prior to Cx
+
+	bit7		0	RW	on-pad tap zone enable
+					0: disable, 1: enable
+					*only supported by H/W prior to Cx
+
+ 0x8235				RW	on-pad command control 6
+	bit4~bit0	0x1d	RW	XHI in 0s/4/1, so 19h = 1100.1b = 12.5
+	(Note that position unit is in 0.5 scanline)
+					*only supported by H/W prior to Cx
+
+ 0x8236				RW	on-pad command control 7
+	bit4~bit0	0x04	RW	YLO in 0s/4/1, so 03h = 0010.1b = 2.5
+	(Note that position unit is in 0.5 scanline)
+					*only supported by H/W prior to Cx
+
+ 0x8237				RW	on-pad command control 8
+	bit4~bit0	0x13	RW	YHI in 0s/4/1, so 11h = 1000.1b = 8.5
+	(Note that position unit is in 0.5 scanline)
+					*only supported by H/W prior to Cx
+
+ 0x8240				RW	system control 5
+	bit1		0	RW	FSP Intellimouse mode enable
+					0: disable, 1: enable
+					*only supported by H/W prior to Cx
+
+	bit2		0	RW	movement + abs. coordinate mode enable
+					0: disable, 1: enable
+	(Note that this function has the functionality of bit 1 even when
+	bit 1 is not set. However, the format is different from that of bit 1.
+	In addition, when bit 1 and bit 2 are set at the same time, bit 2 will
+	override bit 1.)
+					*only supported by H/W prior to Cx
+
+	bit3		0	RW	abs. coordinate only mode enable
+					0: disable, 1: enable
+	(Note that this function has the functionality of bit 1 even when
+	bit 1 is not set. However, the format is different from that of bit 1.
+	In addition, when bit 1, bit 2 and bit 3 are set at the same time,
+	bit 3 will override bit 1 and 2.)
+					*only supported by H/W prior to Cx
+
+	bit5		0	RW	auto switch enable
+					0: disable, 1: enable
+					*only supported by H/W prior to Cx
+
+	bit6		0	RW	G0 abs. + notify packet format enable
+					0: disable, 1: enable
+	(Note that the absolute/relative coordinate output still depends on
+	bit 2 and 3.  That is, if any of those bit is 1, host will receive
+	absolute coordinates; otherwise, host only receives packets with
+	relative coordinate.)
+					*only supported by H/W prior to Cx
+
+	bit7		0	RW	EN_PS2_F2: PS/2 gesture mode 2nd
+					finger packet enable
+					0: disable, 1: enable
+					*only supported by H/W prior to Cx
+
+ 0x8243				RW	on-pad control
+	bit0		0	RW	on-pad control enable
+					0: disable, 1: enable
+	(Note that if this bit is cleared, bit 3/5 will be ineffective)
+					*only supported by H/W prior to Cx
+
+	bit3		0	RW	on-pad fix vertical scrolling enable
+					0: disable, 1: enable
+					*only supported by H/W prior to Cx
+
+	bit5		0	RW	on-pad fix horizontal scrolling enable
+					0: disable, 1: enable
+					*only supported by H/W prior to Cx
+
+ 0x8290				RW	software control register 1
+	bit0		0	RW	absolute coordination mode
+					0: disable, 1: enable
+					*supported since Cx
+
+	bit1		0	RW	gesture ID output
+					0: disable, 1: enable
+					*supported since Cx
+
+	bit2		0	RW	two fingers' coordinates output
+					0: disable, 1: enable
+					*supported since Cx
+
+	bit3		0	RW	finger up one packet output
+					0: disable, 1: enable
+					*supported since Cx
+
+	bit4		0	RW	absolute coordination continuous mode
+					0: disable, 1: enable
+					*supported since Cx
+
+	bit6~bit5	00	RW	gesture group selection
+					00: basic
+					01: suite
+					10: suite pro
+					11: advanced
+					*supported since Cx
+
+	bit7		0	RW	Bx packet output compatible mode
+					0: disable, 1: enable
+					*supported since Cx
+					*supported since Cx
+
+
+ 0x833d				RW	on-pad command control 1
+	bit7		1	RW	on-pad command detection enable
+					0: disable, 1: enable
+					*supported since Cx
+
+ 0x833e				RW	on-pad command detection
+	bit7		0	RW	on-pad command left button down tag
+					enable. Works only in H/W based PS/2
+					data packet mode.
+					0: disable, 1: enable
+					*supported since Cx