02d04254a5
This is a preparation patch for switching the DIY mt handling to using input_mt_assign_slots && input_mt_sync_frame. struct alps_fields is quite large, so while making changes to almost all uses of it lets put it in our priv data instead of on the stack. Having it in our priv data also allows using it directly for storing values which need to be cached, rather then having separate x, y, z, fingers, etc. copies in our priv data. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
189 lines
6.0 KiB
C
189 lines
6.0 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 1
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#define ALPS_PROTO_V2 2
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#define ALPS_PROTO_V3 3
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#define ALPS_PROTO_V4 4
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#define ALPS_PROTO_V5 5
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#define ALPS_PROTO_V6 6
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#define MAX_TOUCHES 2
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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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* 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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* @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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* @flags: Additional device capabilities (passthrough port, trackstick, etc.).
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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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unsigned char signature[3];
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unsigned char command_mode_resp;
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unsigned char proto_version;
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unsigned char byte0, mask0;
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int flags;
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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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* @dev2: "Relative" device used to report trackstick or mouse activity.
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* @phys: Physical path for the relative device.
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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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* @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 input_dev *dev2;
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char phys[32];
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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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unsigned char proto_version;
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unsigned char byte0, mask0;
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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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int (*hw_init)(struct psmouse *psmouse);
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void (*process_packet)(struct psmouse *psmouse);
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void (*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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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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