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/*
 * 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


extern void synaptics_process_byte(struct psmouse *psmouse, struct pt_regs *regs);
extern int synaptics_init(struct psmouse *psmouse);
extern int synaptics_pt_init(struct psmouse *psmouse);
extern void synaptics_disconnect(struct psmouse *psmouse);

/* 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_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) == 1)
#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

/*
 * 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;
        int left;
        int right;
        int up;
        int down;
        int b0;
        int b1;
        int b2;
        int b3;
        int b4;
        int b5;
        int b6;
        int b7;
};

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 */

        /* Data for normal processing */
        unsigned int out_of_sync;               /* # of packets out of sync */
        int old_w;                              /* Previous w value */
       
        struct serio *ptport;                   /* pass-through port */
};

#endif /* _SYNAPTICS_H */