/* * ALPS touchpad PS/2 mouse driver * * Copyright (c) 2003 Peter Osterlund * Copyright (c) 2005 Vojtech Pavlik * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published by * the Free Software Foundation. */ #ifndef _ALPS_H #define _ALPS_H #include #define ALPS_PROTO_V1 1 #define ALPS_PROTO_V2 2 #define ALPS_PROTO_V3 3 #define ALPS_PROTO_V4 4 #define ALPS_PROTO_V5 5 #define ALPS_PROTO_V6 6 #define MAX_TOUCHES 2 #define DOLPHIN_COUNT_PER_ELECTRODE 64 #define DOLPHIN_PROFILE_XOFFSET 8 /* x-electrode offset */ #define DOLPHIN_PROFILE_YOFFSET 1 /* y-electrode offset */ /** * struct alps_model_info - touchpad ID table * @signature: E7 response string to match. * @command_mode_resp: For V3/V4 touchpads, the final byte of the EC response * (aka command mode response) identifies the firmware minor version. This * can be used to distinguish different hardware models which are not * uniquely identifiable through their E7 responses. * @proto_version: Indicates V1/V2/V3/... * @byte0: Helps figure out whether a position report packet matches the * known format for this model. The first byte of the report, ANDed with * mask0, should match byte0. * @mask0: The mask used to check the first byte of the report. * @flags: Additional device capabilities (passthrough port, trackstick, etc.). * * Many (but not all) ALPS touchpads can be identified by looking at the * values returned in the "E7 report" and/or the "EC report." This table * lists a number of such touchpads. */ struct alps_model_info { unsigned char signature[3]; unsigned char command_mode_resp; unsigned char proto_version; unsigned char byte0, mask0; int flags; }; /** * struct alps_nibble_commands - encodings for register accesses * @command: PS/2 command used for the nibble * @data: Data supplied as an argument to the PS/2 command, if applicable * * The ALPS protocol uses magic sequences to transmit binary data to the * touchpad, as it is generally not OK to send arbitrary bytes out the * PS/2 port. Each of the sequences in this table sends one nibble of the * register address or (write) data. Different versions of the ALPS protocol * use slightly different encodings. */ struct alps_nibble_commands { int command; unsigned char data; }; struct alps_bitmap_point { int start_bit; int num_bits; }; /** * struct alps_fields - decoded version of the report packet * @x_map: Bitmap of active X positions for MT. * @y_map: Bitmap of active Y positions for MT. * @fingers: Number of fingers for MT. * @pressure: Pressure. * @st: position for ST. * @mt: position for MT. * @first_mp: Packet is the first of a multi-packet report. * @is_mp: Packet is part of a multi-packet report. * @left: Left touchpad button is active. * @right: Right touchpad button is active. * @middle: Middle touchpad button is active. * @ts_left: Left trackstick button is active. * @ts_right: Right trackstick button is active. * @ts_middle: Middle trackstick button is active. */ struct alps_fields { unsigned int x_map; unsigned int y_map; unsigned int fingers; int pressure; struct input_mt_pos st; struct input_mt_pos mt[MAX_TOUCHES]; unsigned int first_mp:1; unsigned int is_mp:1; unsigned int left:1; unsigned int right:1; unsigned int middle:1; unsigned int ts_left:1; unsigned int ts_right:1; unsigned int ts_middle:1; }; /** * struct alps_data - private data structure for the ALPS driver * @dev2: "Relative" device used to report trackstick or mouse activity. * @phys: Physical path for the relative device. * @nibble_commands: Command mapping used for touchpad register accesses. * @addr_command: Command used to tell the touchpad that a register address * follows. * @proto_version: Indicates V1/V2/V3/... * @byte0: Helps figure out whether a position report packet matches the * known format for this model. The first byte of the report, ANDed with * mask0, should match byte0. * @mask0: The mask used to check the first byte of the report. * @flags: Additional device capabilities (passthrough port, trackstick, etc.). * @x_max: Largest possible X position value. * @y_max: Largest possible Y position value. * @x_bits: Number of X bits in the MT bitmap. * @y_bits: Number of Y bits in the MT bitmap. * @hw_init: Protocol-specific hardware init function. * @process_packet: Protocol-specific function to process a report packet. * @decode_fields: Protocol-specific function to read packet bitfields. * @set_abs_params: Protocol-specific function to configure the input_dev. * @prev_fin: Finger bit from previous packet. * @multi_packet: Multi-packet data in progress. * @multi_data: Saved multi-packet data. * @f: Decoded packet data fields. * @quirks: Bitmap of ALPS_QUIRK_*. * @timer: Timer for flushing out the final report packet in the stream. */ struct alps_data { struct input_dev *dev2; char phys[32]; /* these are autodetected when the device is identified */ const struct alps_nibble_commands *nibble_commands; int addr_command; unsigned char proto_version; unsigned char byte0, mask0; int flags; int x_max; int y_max; int x_bits; int y_bits; int (*hw_init)(struct psmouse *psmouse); void (*process_packet)(struct psmouse *psmouse); void (*decode_fields)(struct alps_fields *f, unsigned char *p, struct psmouse *psmouse); void (*set_abs_params)(struct alps_data *priv, struct input_dev *dev1); int prev_fin; int multi_packet; unsigned char multi_data[6]; struct alps_fields f; u8 quirks; struct timer_list timer; }; #define ALPS_QUIRK_TRACKSTICK_BUTTONS 1 /* trakcstick buttons in trackstick packet */ #ifdef CONFIG_MOUSE_PS2_ALPS int alps_detect(struct psmouse *psmouse, bool set_properties); int alps_init(struct psmouse *psmouse); #else inline int alps_detect(struct psmouse *psmouse, bool set_properties) { return -ENOSYS; } inline int alps_init(struct psmouse *psmouse) { return -ENOSYS; } #endif /* CONFIG_MOUSE_PS2_ALPS */ #endif