305 lines
9.4 KiB
C
305 lines
9.4 KiB
C
/*
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* ALPS touchpad PS/2 mouse driver
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*
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* Copyright (c) 2003 Peter Osterlund <petero2@telia.com>
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* Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*/
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#ifndef _ALPS_H
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#define _ALPS_H
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#include <linux/input/mt.h>
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#define ALPS_PROTO_V1 0x100
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#define ALPS_PROTO_V2 0x200
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#define ALPS_PROTO_V3 0x300
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#define ALPS_PROTO_V3_RUSHMORE 0x310
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#define ALPS_PROTO_V4 0x400
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#define ALPS_PROTO_V5 0x500
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#define ALPS_PROTO_V6 0x600
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#define ALPS_PROTO_V7 0x700 /* t3btl t4s */
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#define ALPS_PROTO_V8 0x800 /* SS4btl SS4s */
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#define MAX_TOUCHES 4
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#define DOLPHIN_COUNT_PER_ELECTRODE 64
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#define DOLPHIN_PROFILE_XOFFSET 8 /* x-electrode offset */
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#define DOLPHIN_PROFILE_YOFFSET 1 /* y-electrode offset */
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/*
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* enum SS4_PACKET_ID - defines the packet type for V8
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* SS4_PACKET_ID_IDLE: There's no finger and no button activity.
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* SS4_PACKET_ID_ONE: There's one finger on touchpad
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* or there's button activities.
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* SS4_PACKET_ID_TWO: There's two or more fingers on touchpad
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* SS4_PACKET_ID_MULTI: There's three or more fingers on touchpad
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*/
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enum SS4_PACKET_ID {
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SS4_PACKET_ID_IDLE = 0,
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SS4_PACKET_ID_ONE,
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SS4_PACKET_ID_TWO,
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SS4_PACKET_ID_MULTI,
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};
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#define SS4_COUNT_PER_ELECTRODE 256
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#define SS4_NUMSENSOR_XOFFSET 7
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#define SS4_NUMSENSOR_YOFFSET 7
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#define SS4_MIN_PITCH_MM 50
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#define SS4_MASK_NORMAL_BUTTONS 0x07
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#define SS4_1F_X_V2(_b) ((_b[0] & 0x0007) | \
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((_b[1] << 3) & 0x0078) | \
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((_b[1] << 2) & 0x0380) | \
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((_b[2] << 5) & 0x1C00) \
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)
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#define SS4_1F_Y_V2(_b) (((_b[2]) & 0x000F) | \
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((_b[3] >> 2) & 0x0030) | \
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((_b[4] << 6) & 0x03C0) | \
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((_b[4] << 5) & 0x0C00) \
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)
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#define SS4_1F_Z_V2(_b) (((_b[5]) & 0x0F) | \
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((_b[5] >> 1) & 0x70) | \
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((_b[4]) & 0x80) \
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)
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#define SS4_1F_LFB_V2(_b) (((_b[2] >> 4) & 0x01) == 0x01)
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#define SS4_MF_LF_V2(_b, _i) ((_b[1 + (_i) * 3] & 0x0004) == 0x0004)
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#define SS4_BTN_V2(_b) ((_b[0] >> 5) & SS4_MASK_NORMAL_BUTTONS)
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#define SS4_STD_MF_X_V2(_b, _i) (((_b[0 + (_i) * 3] << 5) & 0x00E0) | \
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((_b[1 + _i * 3] << 5) & 0x1F00) \
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)
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#define SS4_STD_MF_Y_V2(_b, _i) (((_b[1 + (_i) * 3] << 3) & 0x0010) | \
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((_b[2 + (_i) * 3] << 5) & 0x01E0) | \
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((_b[2 + (_i) * 3] << 4) & 0x0E00) \
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)
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#define SS4_BTL_MF_X_V2(_b, _i) (SS4_STD_MF_X_V2(_b, _i) | \
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((_b[0 + (_i) * 3] >> 3) & 0x0010) \
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)
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#define SS4_BTL_MF_Y_V2(_b, _i) (SS4_STD_MF_Y_V2(_b, _i) | \
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((_b[0 + (_i) * 3] >> 3) & 0x0008) \
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)
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#define SS4_MF_Z_V2(_b, _i) (((_b[1 + (_i) * 3]) & 0x0001) | \
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((_b[1 + (_i) * 3] >> 1) & 0x0002) \
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)
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#define SS4_IS_MF_CONTINUE(_b) ((_b[2] & 0x10) == 0x10)
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#define SS4_IS_5F_DETECTED(_b) ((_b[2] & 0x10) == 0x10)
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#define SS4_MFPACKET_NO_AX 8160 /* X-Coordinate value */
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#define SS4_MFPACKET_NO_AY 4080 /* Y-Coordinate value */
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#define SS4_MFPACKET_NO_AX_BL 8176 /* Buttonless X-Coordinate value */
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#define SS4_MFPACKET_NO_AY_BL 4088 /* Buttonless Y-Coordinate value */
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/*
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* enum V7_PACKET_ID - defines the packet type for V7
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* V7_PACKET_ID_IDLE: There's no finger and no button activity.
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* V7_PACKET_ID_TWO: There's one or two non-resting fingers on touchpad
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* or there's button activities.
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* V7_PACKET_ID_MULTI: There are at least three non-resting fingers.
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* V7_PACKET_ID_NEW: The finger position in slot is not continues from
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* previous packet.
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*/
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enum V7_PACKET_ID {
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V7_PACKET_ID_IDLE,
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V7_PACKET_ID_TWO,
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V7_PACKET_ID_MULTI,
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V7_PACKET_ID_NEW,
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V7_PACKET_ID_UNKNOWN,
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};
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/**
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* struct alps_protocol_info - information about protocol used by a device
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* @version: Indicates V1/V2/V3/...
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* @byte0: Helps figure out whether a position report packet matches the
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* known format for this model. The first byte of the report, ANDed with
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* mask0, should match byte0.
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* @mask0: The mask used to check the first byte of the report.
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* @flags: Additional device capabilities (passthrough port, trackstick, etc.).
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*/
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struct alps_protocol_info {
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u16 version;
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u8 byte0, mask0;
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unsigned int flags;
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};
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/**
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* struct alps_model_info - touchpad ID table
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* @signature: E7 response string to match.
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* @command_mode_resp: For V3/V4 touchpads, the final byte of the EC response
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* (aka command mode response) identifies the firmware minor version. This
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* can be used to distinguish different hardware models which are not
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* uniquely identifiable through their E7 responses.
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* @protocol_info: information about protcol used by the device.
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*
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* Many (but not all) ALPS touchpads can be identified by looking at the
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* values returned in the "E7 report" and/or the "EC report." This table
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* lists a number of such touchpads.
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*/
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struct alps_model_info {
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u8 signature[3];
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u8 command_mode_resp;
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struct alps_protocol_info protocol_info;
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};
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/**
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* struct alps_nibble_commands - encodings for register accesses
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* @command: PS/2 command used for the nibble
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* @data: Data supplied as an argument to the PS/2 command, if applicable
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*
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* The ALPS protocol uses magic sequences to transmit binary data to the
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* touchpad, as it is generally not OK to send arbitrary bytes out the
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* PS/2 port. Each of the sequences in this table sends one nibble of the
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* register address or (write) data. Different versions of the ALPS protocol
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* use slightly different encodings.
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*/
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struct alps_nibble_commands {
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int command;
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unsigned char data;
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};
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struct alps_bitmap_point {
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int start_bit;
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int num_bits;
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};
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/**
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* struct alps_fields - decoded version of the report packet
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* @x_map: Bitmap of active X positions for MT.
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* @y_map: Bitmap of active Y positions for MT.
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* @fingers: Number of fingers for MT.
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* @pressure: Pressure.
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* @st: position for ST.
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* @mt: position for MT.
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* @first_mp: Packet is the first of a multi-packet report.
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* @is_mp: Packet is part of a multi-packet report.
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* @left: Left touchpad button is active.
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* @right: Right touchpad button is active.
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* @middle: Middle touchpad button is active.
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* @ts_left: Left trackstick button is active.
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* @ts_right: Right trackstick button is active.
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* @ts_middle: Middle trackstick button is active.
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*/
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struct alps_fields {
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unsigned int x_map;
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unsigned int y_map;
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unsigned int fingers;
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int pressure;
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struct input_mt_pos st;
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struct input_mt_pos mt[MAX_TOUCHES];
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unsigned int first_mp:1;
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unsigned int is_mp:1;
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unsigned int left:1;
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unsigned int right:1;
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unsigned int middle:1;
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unsigned int ts_left:1;
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unsigned int ts_right:1;
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unsigned int ts_middle:1;
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};
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/**
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* struct alps_data - private data structure for the ALPS driver
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* @psmouse: Pointer to parent psmouse device
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* @dev2: Trackstick device (can be NULL).
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* @dev3: Generic PS/2 mouse (can be NULL, delayed registering).
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* @phys2: Physical path for the trackstick device.
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* @phys3: Physical path for the generic PS/2 mouse.
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* @dev3_register_work: Delayed work for registering PS/2 mouse.
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* @nibble_commands: Command mapping used for touchpad register accesses.
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* @addr_command: Command used to tell the touchpad that a register address
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* follows.
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* @proto_version: Indicates V1/V2/V3/...
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* @byte0: Helps figure out whether a position report packet matches the
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* known format for this model. The first byte of the report, ANDed with
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* mask0, should match byte0.
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* @mask0: The mask used to check the first byte of the report.
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* @fw_ver: cached copy of firmware version (EC report)
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* @flags: Additional device capabilities (passthrough port, trackstick, etc.).
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* @x_max: Largest possible X position value.
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* @y_max: Largest possible Y position value.
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* @x_bits: Number of X bits in the MT bitmap.
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* @y_bits: Number of Y bits in the MT bitmap.
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* @hw_init: Protocol-specific hardware init function.
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* @process_packet: Protocol-specific function to process a report packet.
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* @decode_fields: Protocol-specific function to read packet bitfields.
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* @set_abs_params: Protocol-specific function to configure the input_dev.
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* @prev_fin: Finger bit from previous packet.
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* @multi_packet: Multi-packet data in progress.
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* @multi_data: Saved multi-packet data.
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* @f: Decoded packet data fields.
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* @quirks: Bitmap of ALPS_QUIRK_*.
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* @timer: Timer for flushing out the final report packet in the stream.
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*/
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struct alps_data {
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struct psmouse *psmouse;
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struct input_dev *dev2;
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struct input_dev *dev3;
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char phys2[32];
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char phys3[32];
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struct delayed_work dev3_register_work;
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/* these are autodetected when the device is identified */
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const struct alps_nibble_commands *nibble_commands;
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int addr_command;
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u16 proto_version;
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u8 byte0, mask0;
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u8 fw_ver[3];
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int flags;
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int x_max;
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int y_max;
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int x_bits;
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int y_bits;
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unsigned int x_res;
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unsigned int y_res;
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int (*hw_init)(struct psmouse *psmouse);
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void (*process_packet)(struct psmouse *psmouse);
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int (*decode_fields)(struct alps_fields *f, unsigned char *p,
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struct psmouse *psmouse);
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void (*set_abs_params)(struct alps_data *priv, struct input_dev *dev1);
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int prev_fin;
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int multi_packet;
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int second_touch;
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unsigned char multi_data[6];
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struct alps_fields f;
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u8 quirks;
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struct timer_list timer;
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};
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#define ALPS_QUIRK_TRACKSTICK_BUTTONS 1 /* trakcstick buttons in trackstick packet */
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#ifdef CONFIG_MOUSE_PS2_ALPS
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int alps_detect(struct psmouse *psmouse, bool set_properties);
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int alps_init(struct psmouse *psmouse);
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#else
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inline int alps_detect(struct psmouse *psmouse, bool set_properties)
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{
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return -ENOSYS;
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}
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inline int alps_init(struct psmouse *psmouse)
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{
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return -ENOSYS;
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}
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#endif /* CONFIG_MOUSE_PS2_ALPS */
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#endif
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