Input: ALPS - move v7 packet info to Documentation and v6 packet info
This patch move all packet info from driver source code to documentation and adds info about v6 packet format (from driver source code). Signed-off-by: Pali Rohár <pali.rohar@gmail.com> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Pali Rohár
Dmitry Torokhov
parent
626b9da0b5
commit
ef47fa5280
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@ -3,8 +3,8 @@ ALPS Touchpad Protocol
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Introduction
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------------
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Currently the ALPS touchpad driver supports five protocol versions in use by
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ALPS touchpads, called versions 1, 2, 3, 4 and 5.
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Currently the ALPS touchpad driver supports seven protocol versions in use by
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ALPS touchpads, called versions 1, 2, 3, 4, 5, 6 and 7.
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Since roughly mid-2010 several new ALPS touchpads have been released and
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integrated into a variety of laptops and netbooks. These new touchpads
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@ -240,3 +240,67 @@ For mt, the format is:
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byte 3: 0 x23 x22 x21 x20 x19 x18 x17
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byte 4: 0 x9 x8 x7 x6 x5 x4 x3
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byte 5: 0 x16 x15 x14 x13 x12 x11 x10
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ALPS Absolute Mode - Protocol Version 6
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---------------------------------------
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For trackstick packet, the format is:
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byte 0: 1 1 1 1 1 1 1 1
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byte 1: 0 X6 X5 X4 X3 X2 X1 X0
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byte 2: 0 Y6 Y5 Y4 Y3 Y2 Y1 Y0
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byte 3: ? Y7 X7 ? ? M R L
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byte 4: Z7 Z6 Z5 Z4 Z3 Z2 Z1 Z0
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byte 5: 0 1 1 1 1 1 1 1
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For touchpad packet, the format is:
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byte 0: 1 1 1 1 1 1 1 1
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byte 1: 0 0 0 0 x3 x2 x1 x0
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byte 2: 0 0 0 0 y3 y2 y1 y0
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byte 3: ? x7 x6 x5 x4 ? r l
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byte 4: ? y7 y6 y5 y4 ? ? ?
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byte 5: z7 z6 z5 z4 z3 z2 z1 z0
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(v6 touchpad does not have middle button)
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ALPS Absolute Mode - Protocol Version 7
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---------------------------------------
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For trackstick packet, the format is:
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byte 0: 0 1 0 0 1 0 0 0
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byte 1: 1 1 * * 1 M R L
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byte 2: X7 1 X5 X4 X3 X2 X1 X0
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byte 3: Z6 1 Y6 X6 1 Y2 Y1 Y0
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byte 4: Y7 0 Y5 Y4 Y3 1 1 0
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byte 5: T&P 0 Z5 Z4 Z3 Z2 Z1 Z0
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For touchpad packet, the format is:
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packet-fmt b7 b6 b5 b4 b3 b2 b1 b0
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byte 0: TWO & MULTI L 1 R M 1 Y0-2 Y0-1 Y0-0
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byte 0: NEW L 1 X1-5 1 1 Y0-2 Y0-1 Y0-0
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byte 1: Y0-10 Y0-9 Y0-8 Y0-7 Y0-6 Y0-5 Y0-4 Y0-3
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byte 2: X0-11 1 X0-10 X0-9 X0-8 X0-7 X0-6 X0-5
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byte 3: X1-11 1 X0-4 X0-3 1 X0-2 X0-1 X0-0
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byte 4: TWO X1-10 TWO X1-9 X1-8 X1-7 X1-6 X1-5 X1-4
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byte 4: MULTI X1-10 TWO X1-9 X1-8 X1-7 X1-6 Y1-5 1
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byte 4: NEW X1-10 TWO X1-9 X1-8 X1-7 X1-6 0 0
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byte 5: TWO & NEW Y1-10 0 Y1-9 Y1-8 Y1-7 Y1-6 Y1-5 Y1-4
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byte 5: MULTI Y1-10 0 Y1-9 Y1-8 Y1-7 Y1-6 F-1 F-0
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L: Left button
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R / M: Non-clickpads: Right / Middle button
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Clickpads: When > 2 fingers are down, and some fingers
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are in the button area, then the 2 coordinates reported
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are for fingers outside the button area and these report
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extra fingers being present in the right / left button
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area. Note these fingers are not added to the F field!
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so if a TWO packet is received and R = 1 then there are
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3 fingers down, etc.
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TWO: 1: Two touches present, byte 0/4/5 are in TWO fmt
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0: If byte 4 bit 0 is 1, then byte 0/4/5 are in MULTI fmt
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otherwise byte 0 bit 4 must be set and byte 0/4/5 are
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in NEW fmt
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F: Number of fingers - 3, 0 means 3 fingers, 1 means 4 ...
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@ -909,34 +909,6 @@ static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt,
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unsigned char *pkt,
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unsigned char pkt_id)
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{
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/*
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* packet-fmt b7 b6 b5 b4 b3 b2 b1 b0
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* Byte0 TWO & MULTI L 1 R M 1 Y0-2 Y0-1 Y0-0
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* Byte0 NEW L 1 X1-5 1 1 Y0-2 Y0-1 Y0-0
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* Byte1 Y0-10 Y0-9 Y0-8 Y0-7 Y0-6 Y0-5 Y0-4 Y0-3
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* Byte2 X0-11 1 X0-10 X0-9 X0-8 X0-7 X0-6 X0-5
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* Byte3 X1-11 1 X0-4 X0-3 1 X0-2 X0-1 X0-0
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* Byte4 TWO X1-10 TWO X1-9 X1-8 X1-7 X1-6 X1-5 X1-4
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* Byte4 MULTI X1-10 TWO X1-9 X1-8 X1-7 X1-6 Y1-5 1
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* Byte4 NEW X1-10 TWO X1-9 X1-8 X1-7 X1-6 0 0
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* Byte5 TWO & NEW Y1-10 0 Y1-9 Y1-8 Y1-7 Y1-6 Y1-5 Y1-4
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* Byte5 MULTI Y1-10 0 Y1-9 Y1-8 Y1-7 Y1-6 F-1 F-0
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* L: Left button
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* R / M: Non-clickpads: Right / Middle button
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* Clickpads: When > 2 fingers are down, and some fingers
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* are in the button area, then the 2 coordinates reported
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* are for fingers outside the button area and these report
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* extra fingers being present in the right / left button
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* area. Note these fingers are not added to the F field!
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* so if a TWO packet is received and R = 1 then there are
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* 3 fingers down, etc.
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* TWO: 1: Two touches present, byte 0/4/5 are in TWO fmt
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* 0: If byte 4 bit 0 is 1, then byte 0/4/5 are in MULTI fmt
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* otherwise byte 0 bit 4 must be set and byte 0/4/5 are
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* in NEW fmt
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* F: Number of fingers - 3, 0 means 3 fingers, 1 means 4 ...
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*/
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mt[0].x = ((pkt[2] & 0x80) << 4);
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mt[0].x |= ((pkt[2] & 0x3F) << 5);
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mt[0].x |= ((pkt[3] & 0x30) >> 1);
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@ -1061,17 +1033,6 @@ static void alps_process_trackstick_packet_v7(struct psmouse *psmouse)
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return;
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}
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/*
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* b7 b6 b5 b4 b3 b2 b1 b0
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* Byte0 0 1 0 0 1 0 0 0
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* Byte1 1 1 * * 1 M R L
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* Byte2 X7 1 X5 X4 X3 X2 X1 X0
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* Byte3 Z6 1 Y6 X6 1 Y2 Y1 Y0
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* Byte4 Y7 0 Y5 Y4 Y3 1 1 0
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* Byte5 T&P 0 Z5 Z4 Z3 Z2 Z1 Z0
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* M / R / L: Middle / Right / Left button
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*/
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x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2);
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y = (packet[3] & 0x07) | (packet[4] & 0xb8) |
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((packet[3] & 0x20) << 1);
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