[GitHub/mt8127/android_kernel_alcatel_ttab.git] / 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_VERSION_QUERY		0x01
#define ETP_CAPABILITIES_QUERY		0x02

/*
 * Command values for register reading or writing
 */
#define ETP_REGISTER_READ		0x10
#define ETP_REGISTER_WRITE		0x11

/*
 * 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)

/*
 * It seems the resolution for hardware version 2 doubled.
 * Hence the X and Y ranges are doubled too.
 * The bezel around the pad also appears to be smaller
 */
#define ETP_EDGE_FUZZ_V2		8

#define ETP_XMIN_V2			(   0 + ETP_EDGE_FUZZ_V2)
#define ETP_XMAX_V2			(1152 - ETP_EDGE_FUZZ_V2)
#define ETP_YMIN_V2			(   0 + ETP_EDGE_FUZZ_V2)
#define ETP_YMAX_V2			( 768 - ETP_EDGE_FUZZ_V2)

#define ETP_PMIN_V2			0
#define ETP_PMAX_V2			255
#define ETP_WMIN_V2			0
#define ETP_WMAX_V2			15

struct elantech_data {
	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];
	bool paritycheck;
	bool jumpy_cursor;
	bool reports_pressure;
	unsigned char hw_version;
	unsigned int fw_version;
	unsigned int single_finger_reports;
	unsigned int y_max;
	unsigned char parity[256];
};

#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;
}
static inline int elantech_init(struct psmouse *psmouse)
{
	return -ENOSYS;
}
#endif /* CONFIG_MOUSE_PS2_ELANTECH */

#endif
Commit	Line	Data
2a0bd75e	1	/*
3f8c0df4	2	* Elantech Touchpad driver (v6)
2a0bd75e	3	*
3f8c0df4	4	* Copyright (C) 2007-2009 Arjan Opmeer <arjan@opmeer.net>
2a0bd75e AO	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms of the GNU General Public License version 2 as published
	8	* by the Free Software Foundation.
	9	*
	10	* Trademarks are the property of their respective owners.
	11	*/
	12
	13	#ifndef _ELANTECH_H
	14	#define _ELANTECH_H
	15
	16	/*
	17	* Command values for Synaptics style queries
	18	*/
	19	#define ETP_FW_VERSION_QUERY 0x01
	20	#define ETP_CAPABILITIES_QUERY 0x02
	21
	22	/*
	23	* Command values for register reading or writing
	24	*/
	25	#define ETP_REGISTER_READ 0x10
	26	#define ETP_REGISTER_WRITE 0x11
	27
	28	/*
	29	* Hardware version 2 custom PS/2 command value
	30	*/
	31	#define ETP_PS2_CUSTOM_COMMAND 0xf8
	32
	33	/*
	34	* Times to retry a ps2_command and millisecond delay between tries
	35	*/
	36	#define ETP_PS2_COMMAND_TRIES 3
	37	#define ETP_PS2_COMMAND_DELAY 500
	38
	39	/*
	40	* Times to try to read back a register and millisecond delay between tries
	41	*/
	42	#define ETP_READ_BACK_TRIES 5
	43	#define ETP_READ_BACK_DELAY 2000
	44
	45	/*
	46	* Register bitmasks for hardware version 1
	47	*/
	48	#define ETP_R10_ABSOLUTE_MODE 0x04
	49	#define ETP_R11_4_BYTE_MODE 0x02
	50
	51	/*
	52	* Capability bitmasks
	53	*/
	54	#define ETP_CAP_HAS_ROCKER 0x04
	55
	56	/*
	57	* One hard to find application note states that X axis range is 0 to 576
	58	* and Y axis range is 0 to 384 for harware version 1.
	59	* Edge fuzz might be necessary because of bezel around the touchpad
	60	*/
	61	#define ETP_EDGE_FUZZ_V1 32
	62
	63	#define ETP_XMIN_V1 ( 0 + ETP_EDGE_FUZZ_V1)
	64	#define ETP_XMAX_V1 (576 - ETP_EDGE_FUZZ_V1)
	65	#define ETP_YMIN_V1 ( 0 + ETP_EDGE_FUZZ_V1)
	66	#define ETP_YMAX_V1 (384 - ETP_EDGE_FUZZ_V1)
	67
	68	/*
69	* It seems the resolution for hardware version 2 doubled.
70	* Hence the X and Y ranges are doubled too.
71	* The bezel around the pad also appears to be smaller
72	*/
73	#define ETP_EDGE_FUZZ_V2 8
74
75	#define ETP_XMIN_V2 ( 0 + ETP_EDGE_FUZZ_V2)
76	#define ETP_XMAX_V2 (1152 - ETP_EDGE_FUZZ_V2)
77	#define ETP_YMIN_V2 ( 0 + ETP_EDGE_FUZZ_V2)
78	#define ETP_YMAX_V2 ( 768 - ETP_EDGE_FUZZ_V2)
79
f941c705 ÉP	80	#define ETP_PMIN_V2 0
	81	#define ETP_PMAX_V2 255
	82	#define ETP_WMIN_V2 0
	83	#define ETP_WMAX_V2 15
	84
2a0bd75e AO	85	struct elantech_data {
	86	unsigned char reg_10;
	87	unsigned char reg_11;
	88	unsigned char reg_20;
	89	unsigned char reg_21;
	90	unsigned char reg_22;
	91	unsigned char reg_23;
	92	unsigned char reg_24;
	93	unsigned char reg_25;
	94	unsigned char reg_26;
	95	unsigned char debug;
230282a7	96	unsigned char capabilities[3];
7f29f17b ÉP	97	bool paritycheck;
7f29f17b ÉP	98	bool jumpy_cursor;
f941c705	99	bool reports_pressure;
504e8bee	100	unsigned char hw_version;
7f29f17b ÉP	101	unsigned int fw_version;
7f29f17b ÉP	102	unsigned int single_finger_reports;
230282a7	103	unsigned int y_max;
2a0bd75e AO	104	unsigned char parity[256];
	105	};
	106
	107	#ifdef CONFIG_MOUSE_PS2_ELANTECH
b7802c5c	108	int elantech_detect(struct psmouse *psmouse, bool set_properties);
2a0bd75e AO	109	int elantech_init(struct psmouse *psmouse);
2a0bd75e AO	110	#else
b7802c5c	111	static inline int elantech_detect(struct psmouse *psmouse, bool set_properties)
2a0bd75e AO	112	{
	113	return -ENOSYS;
	114	}
	115	static inline int elantech_init(struct psmouse *psmouse)
	116	{
	117	return -ENOSYS;
	118	}
	119	#endif /* CONFIG_MOUSE_PS2_ELANTECH */
	120
	121	#endif