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Release 4.11 drivers/input/mouse/elantech.h

/*
 * Elantech Touchpad driver (v6)
 *
 * Copyright (C) 2007-2009 Arjan Opmeer <arjan@opmeer.net>
 *
 * 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.
 *
 * Trademarks are the property of their respective owners.
 */

#ifndef _ELANTECH_H

#define _ELANTECH_H

/*
 * Command values for Synaptics style queries
 */

#define ETP_FW_ID_QUERY			0x00

#define ETP_FW_VERSION_QUERY		0x01

#define ETP_CAPABILITIES_QUERY		0x02

#define ETP_SAMPLE_QUERY		0x03

#define ETP_RESOLUTION_QUERY		0x04

/*
 * Command values for register reading or writing
 */

#define ETP_REGISTER_READ		0x10

#define ETP_REGISTER_WRITE		0x11

#define ETP_REGISTER_READWRITE		0x00

/*
 * Hardware version 2 custom PS/2 command value
 */

#define ETP_PS2_CUSTOM_COMMAND		0xf8

/*
 * Times to retry a ps2_command and millisecond delay between tries
 */

#define ETP_PS2_COMMAND_TRIES		3

#define ETP_PS2_COMMAND_DELAY		500

/*
 * Times to try to read back a register and millisecond delay between tries
 */

#define ETP_READ_BACK_TRIES		5

#define ETP_READ_BACK_DELAY		2000

/*
 * Register bitmasks for hardware version 1
 */

#define ETP_R10_ABSOLUTE_MODE		0x04

#define ETP_R11_4_BYTE_MODE		0x02

/*
 * Capability bitmasks
 */

#define ETP_CAP_HAS_ROCKER		0x04

/*
 * One hard to find application note states that X axis range is 0 to 576
 * and Y axis range is 0 to 384 for harware version 1.
 * Edge fuzz might be necessary because of bezel around the touchpad
 */

#define ETP_EDGE_FUZZ_V1		32


#define ETP_XMIN_V1			(  0 + ETP_EDGE_FUZZ_V1)

#define ETP_XMAX_V1			(576 - ETP_EDGE_FUZZ_V1)

#define ETP_YMIN_V1			(  0 + ETP_EDGE_FUZZ_V1)

#define ETP_YMAX_V1			(384 - ETP_EDGE_FUZZ_V1)

/*
 * The resolution for older v2 hardware doubled.
 * (newer v2's firmware provides command so we can query)
 */

#define ETP_XMIN_V2			0

#define ETP_XMAX_V2			1152

#define ETP_YMIN_V2			0

#define ETP_YMAX_V2			768


#define ETP_PMIN_V2			0

#define ETP_PMAX_V2			255

#define ETP_WMIN_V2			0

#define ETP_WMAX_V2			15

/*
 * v3 hardware has 2 kinds of packet types,
 * v4 hardware has 3.
 */

#define PACKET_UNKNOWN			0x01

#define PACKET_DEBOUNCE			0x02

#define PACKET_V3_HEAD			0x03

#define PACKET_V3_TAIL			0x04

#define PACKET_V4_HEAD			0x05

#define PACKET_V4_MOTION		0x06

#define PACKET_V4_STATUS		0x07

#define PACKET_TRACKPOINT		0x08

/*
 * track up to 5 fingers for v4 hardware
 */

#define ETP_MAX_FINGERS			5

/*
 * weight value for v4 hardware
 */

#define ETP_WEIGHT_VALUE		5

/*
 * The base position for one finger, v4 hardware
 */

struct finger_pos {
	
unsigned int x;
	
unsigned int y;
};


struct elantech_data {
	
struct input_dev *tp_dev;	/* Relative device for trackpoint */
	
char tp_phys[32];
	
unsigned char reg_07;
	
unsigned char reg_10;
	
unsigned char reg_11;
	
unsigned char reg_20;
	
unsigned char reg_21;
	
unsigned char reg_22;
	
unsigned char reg_23;
	
unsigned char reg_24;
	
unsigned char reg_25;
	
unsigned char reg_26;
	
unsigned char debug;
	
unsigned char capabilities[3];
	
unsigned char samples[3];
	
bool paritycheck;
	
bool jumpy_cursor;
	
bool reports_pressure;
	
bool crc_enabled;
	
bool set_hw_resolution;
	
unsigned char hw_version;
	
unsigned int fw_version;
	
unsigned int single_finger_reports;
	
unsigned int y_max;
	
unsigned int width;
	
struct finger_pos mt[ETP_MAX_FINGERS];
	
unsigned char parity[256];
	
int (*send_cmd)(struct psmouse *psmouse, unsigned char c, unsigned char *param);
	
void (*original_set_rate)(struct psmouse *psmouse, unsigned int rate);
};

#ifdef CONFIG_MOUSE_PS2_ELANTECH
int elantech_detect(struct psmouse *psmouse, bool set_properties);
int elantech_init(struct psmouse *psmouse);
#else

static inline int elantech_detect(struct psmouse *psmouse, bool set_properties) { return -ENOSYS; }

Contributors

PersonTokensPropCommitsCommitProp
Arjan Opmeer1894.74%150.00%
Dmitry Torokhov15.26%150.00%
Total19100.00%2100.00%


static inline int elantech_init(struct psmouse *psmouse) { return -ENOSYS; }

Contributors

PersonTokensPropCommitsCommitProp
Arjan Opmeer16100.00%1100.00%
Total16100.00%1100.00%

#endif /* CONFIG_MOUSE_PS2_ELANTECH */ #endif

Overall Contributors

PersonTokensPropCommitsCommitProp
Arjan Opmeer22353.61%211.11%
JJ Ding11728.12%738.89%
Ulrik De Bie327.69%211.11%
Éric Piel256.01%211.11%
Duson Lin71.68%15.56%
Dmitry Torokhov61.44%211.11%
Matteo Delfino30.72%15.56%
Hans de Goede30.72%15.56%
Total416100.00%18100.00%
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