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synaptics.h

/*
 * Synaptics TouchPad PS/2 mouse driver
 *
 * 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 _SYNAPTICS_H
#define _SYNAPTICS_H

/* synaptics queries */
#define SYN_QUE_IDENTIFY            0x00
#define SYN_QUE_MODES               0x01
#define SYN_QUE_CAPABILITIES        0x02
#define SYN_QUE_MODEL               0x03
#define SYN_QUE_SERIAL_NUMBER_PREFIX      0x06
#define SYN_QUE_SERIAL_NUMBER_SUFFIX      0x07
#define SYN_QUE_RESOLUTION          0x08
#define SYN_QUE_EXT_CAPAB           0x09

/* synatics modes */
#define SYN_BIT_ABSOLUTE_MODE       (1 << 7)
#define SYN_BIT_HIGH_RATE           (1 << 6)
#define SYN_BIT_SLEEP_MODE          (1 << 3)
#define SYN_BIT_DISABLE_GESTURE           (1 << 2)
#define SYN_BIT_FOUR_BYTE_CLIENT    (1 << 1)
#define SYN_BIT_W_MODE              (1 << 0)

/* synaptics model ID bits */
#define SYN_MODEL_ROT180(m)         ((m) & (1 << 23))
#define SYN_MODEL_PORTRAIT(m)       ((m) & (1 << 22))
#define SYN_MODEL_SENSOR(m)         (((m) >> 16) & 0x3f)
#define SYN_MODEL_HARDWARE(m)       (((m) >> 9) & 0x7f)
#define SYN_MODEL_NEWABS(m)         ((m) & (1 << 7))
#define SYN_MODEL_PEN(m)            ((m) & (1 << 6))
#define SYN_MODEL_SIMPLIC(m)        ((m) & (1 << 5))
#define SYN_MODEL_GEOMETRY(m)       ((m) & 0x0f)

/* synaptics capability bits */
#define SYN_CAP_EXTENDED(c)         ((c) & (1 << 23))
#define SYN_CAP_MIDDLE_BUTTON(c)    ((c) & (1 << 18))
#define SYN_CAP_PASS_THROUGH(c)           ((c) & (1 << 7))
#define SYN_CAP_SLEEP(c)            ((c) & (1 << 4))
#define SYN_CAP_FOUR_BUTTON(c)            ((c) & (1 << 3))
#define SYN_CAP_MULTIFINGER(c)            ((c) & (1 << 1))
#define SYN_CAP_PALMDETECT(c)       ((c) & (1 << 0))
#define SYN_CAP_VALID(c)            ((((c) & 0x00ff00) >> 8) == 0x47)
#define SYN_EXT_CAP_REQUESTS(c)           (((c) & 0x700000) >> 20)
#define SYN_CAP_MULTI_BUTTON_NO(ec) (((ec) & 0x00f000) >> 12)

/* synaptics modes query bits */
#define SYN_MODE_ABSOLUTE(m)        ((m) & (1 << 7))
#define SYN_MODE_RATE(m)            ((m) & (1 << 6))
#define SYN_MODE_BAUD_SLEEP(m)            ((m) & (1 << 3))
#define SYN_MODE_DISABLE_GESTURE(m) ((m) & (1 << 2))
#define SYN_MODE_PACKSIZE(m)        ((m) & (1 << 1))
#define SYN_MODE_WMODE(m)           ((m) & (1 << 0))

/* synaptics identify query bits */
#define SYN_ID_MODEL(i)             (((i) >> 4) & 0x0f)
#define SYN_ID_MAJOR(i)             ((i) & 0x0f)
#define SYN_ID_MINOR(i)             (((i) >> 16) & 0xff)
#define SYN_ID_IS_SYNAPTICS(i)            ((((i) >> 8) & 0xff) == 0x47)

/* synaptics special commands */
#define SYN_PS_SET_MODE2            0x14
#define SYN_PS_CLIENT_CMD           0x28

/* synaptics packet types */
#define SYN_NEWABS                  0
#define SYN_NEWABS_STRICT           1
#define SYN_NEWABS_RELAXED          2
#define SYN_OLDABS                  3

/*
 * A structure to describe the state of the touchpad hardware (buttons and pad)
 */

struct synaptics_hw_state {
      int x;
      int y;
      int z;
      int w;
      unsigned int left:1;
      unsigned int right:1;
      unsigned int middle:1;
      unsigned int up:1;
      unsigned int down:1;
      unsigned char ext_buttons;
      signed char scroll;
};

struct synaptics_data {
      /* Data read from the touchpad */
      unsigned long int model_id;         /* Model-ID */
      unsigned long int capabilities;           /* Capabilities */
      unsigned long int ext_cap;          /* Extended Capabilities */
      unsigned long int identity;         /* Identification */

      unsigned char pkt_type;             /* packet type - old, new, etc */
      unsigned char mode;                 /* current mode byte */
      int scroll;
};

int synaptics_detect(struct psmouse *psmouse, int set_properties);
int synaptics_init(struct psmouse *psmouse);
void synaptics_reset(struct psmouse *psmouse);

#endif /* _SYNAPTICS_H */

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