Attachment #174447 for bug #205690




#include <sys/sysctl.h>
#include <sys/time.h>
#include <sys/uio.h>
#include <sys/libkern.h>

#include <sys/limits.h>
#include <sys/mouse.h>

#define	PSM_PACKETQUEUE	128
#endif

enum {
	SYNAPTICS_SYSCTL_MIN_PRESSURE,
	SYNAPTICS_SYSCTL_MAX_PRESSURE,
	SYNAPTICS_SYSCTL_MAX_WIDTH,
	SYNAPTICS_SYSCTL_MARGIN_TOP,
	SYNAPTICS_SYSCTL_MARGIN_RIGHT,
	SYNAPTICS_SYSCTL_MARGIN_BOTTOM,
	SYNAPTICS_SYSCTL_MARGIN_LEFT,
	SYNAPTICS_SYSCTL_NA_TOP,
	SYNAPTICS_SYSCTL_NA_RIGHT,
	SYNAPTICS_SYSCTL_NA_BOTTOM,
	SYNAPTICS_SYSCTL_NA_LEFT,
	SYNAPTICS_SYSCTL_WINDOW_MIN,
	SYNAPTICS_SYSCTL_WINDOW_MAX,
	SYNAPTICS_SYSCTL_MULTIPLICATOR,
	SYNAPTICS_SYSCTL_WEIGHT_CURRENT,
	SYNAPTICS_SYSCTL_WEIGHT_PREVIOUS,
	SYNAPTICS_SYSCTL_WEIGHT_PREVIOUS_NA,
	SYNAPTICS_SYSCTL_WEIGHT_LEN_SQUARED,
	SYNAPTICS_SYSCTL_DIV_MIN,
	SYNAPTICS_SYSCTL_DIV_MAX,
	SYNAPTICS_SYSCTL_DIV_MAX_NA,
	SYNAPTICS_SYSCTL_DIV_LEN,
	SYNAPTICS_SYSCTL_TAP_MAX_DELTA,
	SYNAPTICS_SYSCTL_TAP_MIN_QUEUE,
	SYNAPTICS_SYSCTL_TAPHOLD_TIMEOUT,
	SYNAPTICS_SYSCTL_VSCROLL_HOR_AREA,
	SYNAPTICS_SYSCTL_VSCROLL_VER_AREA,
	SYNAPTICS_SYSCTL_VSCROLL_MIN_DELTA,
	SYNAPTICS_SYSCTL_VSCROLL_DIV_MIN,
	SYNAPTICS_SYSCTL_VSCROLL_DIV_MAX,
	SYNAPTICS_SYSCTL_TOUCHPAD_OFF
};

typedef struct synapticsinfo {
	struct sysctl_ctx_list	 sysctl_ctx;
	struct sysctl_oid	*sysctl_tree;

	int			 vscroll_div_min;
	int			 vscroll_div_max;
	int			 touchpad_off;
	int			 softbuttons_y;
	int			 softbutton2_x;
	int			 softbutton3_x;
	int			 max_x;
	int			 max_y;
} synapticsinfo_t;

typedef struct synapticspacket {

    ((synhw).infoMajor > (major) ||					\
     ((synhw).infoMajor == (major) && (synhw).infoMinor >= (minor)))

typedef struct smoother {
	synapticspacket_t	queue[SYNAPTICS_PACKETQUEUE];
	int			queue_len;
	int			queue_cursor;
	int			window_min;
	int			start_x;
	int			start_y;
	int			avg_dx;
	int			avg_dy;
	int			squelch_x;
	int			squelch_y;
	int			is_fuzzy;
	int			active;
} smoother_t;

typedef struct gesture {
	int			window_min;
	int			fingers_nb;
	int			tap_button;
	int			in_taphold;
	int			in_vscroll;
	int			zmax;		/* maximum pressure value */
	struct timeval		taptimeout;	/* tap timeout for touchpads */
} gesture_t;

enum {
	TRACKPOINT_SYSCTL_SENSITIVITY,

	int	skipback;
} trackpointinfo_t;

typedef struct finger {
	int			x;
	int			y;
	int			p;
	int			w;
	int			flags;
} finger_t;
#define	PSM_FINGERS		2	/* # of processed fingers */
#define	PSM_FINGER_IS_PEN	(1<<0)
#define	PSM_FINGER_FUZZY	(1<<1)
#define	PSM_FINGER_DEFAULT_P	tap_threshold
#define	PSM_FINGER_DEFAULT_W	1
#define	PSM_FINGER_IS_SET(f) ((f).x != -1 && (f).y != -1 && (f).p != 0)
#define	PSM_FINGER_RESET(f) do \
	(f) = (finger_t) { .x = -1, .y = -1, .p = 0, .w = 0, .flags = 0 }; \
while (0)

typedef struct elantechhw {
	int			hwversion;
	int			fwversion;
	int			sizex;
	int			sizey;
	int			dpmmx;
	int			dpmmy;
	int			ntracesx;
	int			ntracesy;
	int			issemimt;
	int			isclickpad;
	int			hascrc;
	int			hastrackpad;
	int			haspressure;
} elantechhw_t;

/* minimum versions supported by this driver */
#define	ELANTECH_HW_IS_V1(fwver) ((fwver) < 0x020030 || (fwver) == 0x020600)

#define	ELANTECH_MAGIC(magic)				\
	((magic)[0] == 0x3c && (magic)[1] == 0x03 &&	\
	((magic)[2] == 0xc8 || (magic)[2] == 0x00))

#define	ELANTECH_FW_ID		0x00
#define	ELANTECH_FW_VERSION	0x01
#define	ELANTECH_CAPABILITIES	0x02
#define	ELANTECH_SAMPLE		0x03
#define	ELANTECH_RESOLUTION	0x04
#define	ELANTECH_REG_READ	0x10
#define	ELANTECH_REG_WRITE	0x11
#define	ELANTECH_REG_RDWR	0x00
#define	ELANTECH_CUSTOM_CMD	0xf8

#define	ELANTECH_MAX_FINGERS	PSM_FINGERS

#define	ELANTECH_FINGER_SET_XYP(pb) (finger_t) {			\
    .x = (((pb)->ipacket[1] & 0x0f) << 8) | (pb)->ipacket[2],		\
    .y = (((pb)->ipacket[4] & 0x0f) << 8) | (pb)->ipacket[5],		\
    .p = ((pb)->ipacket[1] & 0xf0) | (((pb)->ipacket[4] >> 4) & 0x0f),	\
    .w = PSM_FINGER_DEFAULT_W,						\
    .flags = 0								\
}

enum {
	ELANTECH_PKT_NOP,
	ELANTECH_PKT_TRACKPOINT,
	ELANTECH_PKT_V2_COMMON,
	ELANTECH_PKT_V2_2FINGER,
	ELANTECH_PKT_V3,
	ELANTECH_PKT_V4_STATUS,
	ELANTECH_PKT_V4_HEAD,
	ELANTECH_PKT_V4_MOTION
};

#define	ELANTECH_PKT_IS_TRACKPOINT(pb) (((pb)->ipacket[3] & 0x0f) == 0x06)
#define	ELANTECH_PKT_IS_DEBOUNCE(pb, hwversion) ((hwversion) == 4 ? 0 :	\
    (pb)->ipacket[0] == ((hwversion) == 2 ? 0x84 : 0xc4) &&		\
    (pb)->ipacket[1] == 0xff && (pb)->ipacket[2] == 0xff &&		\
    (pb)->ipacket[3] == 0x02 && (pb)->ipacket[4] == 0xff &&		\
    (pb)->ipacket[5] == 0xff)
#define	ELANTECH_PKT_IS_V2(pb) 						\
    (((pb)->ipacket[0] & 0x0c) == 0x04 && ((pb)->ipacket[3] & 0x0f) == 0x02)
#define	ELANTECH_PKT_IS_V3_HEAD(pb, hascrc) ((hascrc) ? 		\
    ((pb)->ipacket[3] & 0x09) == 0x08 : 				\
    ((pb)->ipacket[0] & 0x0c) == 0x04 && ((pb)->ipacket[3] & 0xcf) == 0x02)
#define	ELANTECH_PKT_IS_V3_TAIL(pb, hascrc) ((hascrc) ? 		\
    ((pb)->ipacket[3] & 0x09) == 0x09 : 				\
    ((pb)->ipacket[0] & 0x0c) == 0x0c && ((pb)->ipacket[3] & 0xce) == 0x0c)
#define	ELANTECH_PKT_IS_V4(pb, hascrc) ((hascrc) ? 			\
    ((pb)->ipacket[3] & 0x08) == 0x00 :					\
    ((pb)->ipacket[0] & 0x0c) == 0x04 && ((pb)->ipacket[3] & 0x1c) == 0x10)

typedef struct elantechaction {
	finger_t		fingers[ELANTECH_MAX_FINGERS];
	int			mask;
} elantechaction_t;

/* driver control block */
struct psm_softc {		/* Driver status information */
	int		unit;

	mousehw_t	hw;		/* hardware information */
	synapticshw_t	synhw;		/* Synaptics hardware information */
	synapticsinfo_t	syninfo;	/* Synaptics configuration */
	smoother_t	smoother[PSM_FINGERS];	/* Motion smoothing */
	gesture_t	gesture;	/* Gesture context */
	elantechhw_t	elanhw;		/* Elantech hardware information */
	elantechaction_t elanaction;	/* Elantech action context */
	int		tphw;		/* TrackPoint hardware information */
	trackpointinfo_t tpinfo;	/* TrackPoint configuration */
	mousemode_t	mode;		/* operation mode */

	int		xaverage;	/* average X position */
	int		yaverage;	/* average Y position */
	int		squelch; /* level to filter movement at low speed */
	int		zmax;	/* maximum pressure value for touchpads */
	int		syncerrors; /* # of bytes discarded to synchronize */
	int		pkterrors;  /* # of packets failed during quaranteen. */
	struct timeval	inputtimeout;
	struct timeval	lastsoftintr;	/* time of last soft interrupt */
	struct timeval	lastinputerr;	/* time last sync error happened */
	struct timeval	idletimeout;
	packetbuf_t	idlepacket;	/* packet to send after idle timeout */
	int		watchdog;	/* watchdog timer flag */
	struct callout	callout;	/* watchdog timer call out */
	struct callout	softcallout; /* buffer timer call out */

static int trackpoint_support = 0;
TUNABLE_INT("hw.psm.trackpoint_support", &trackpoint_support);

static int elantech_support = 0;
TUNABLE_INT("hw.psm.elantech_support", &elantech_support);

static int verbose = PSM_DEBUG;
TUNABLE_INT("debug.psm.loglevel", &verbose);


	int	accelfactor;
} old_mousemode_t;

#define SYN_OFFSET(field) offsetof(struct psm_softc, syninfo.field)
enum {
	SYNAPTICS_SYSCTL_MIN_PRESSURE =		SYN_OFFSET(min_pressure),
	SYNAPTICS_SYSCTL_MAX_PRESSURE =		SYN_OFFSET(max_pressure),
	SYNAPTICS_SYSCTL_MAX_WIDTH =		SYN_OFFSET(max_width),
	SYNAPTICS_SYSCTL_MARGIN_TOP =		SYN_OFFSET(margin_top),
	SYNAPTICS_SYSCTL_MARGIN_RIGHT =		SYN_OFFSET(margin_right),
	SYNAPTICS_SYSCTL_MARGIN_BOTTOM =	SYN_OFFSET(margin_bottom),
	SYNAPTICS_SYSCTL_MARGIN_LEFT =		SYN_OFFSET(margin_left),
	SYNAPTICS_SYSCTL_NA_TOP =		SYN_OFFSET(na_top),
	SYNAPTICS_SYSCTL_NA_RIGHT =		SYN_OFFSET(na_right),
	SYNAPTICS_SYSCTL_NA_BOTTOM =		SYN_OFFSET(na_bottom),
	SYNAPTICS_SYSCTL_NA_LEFT = 		SYN_OFFSET(na_left),
	SYNAPTICS_SYSCTL_WINDOW_MIN =		SYN_OFFSET(window_min),
	SYNAPTICS_SYSCTL_WINDOW_MAX =		SYN_OFFSET(window_max),
	SYNAPTICS_SYSCTL_MULTIPLICATOR =	SYN_OFFSET(multiplicator),
	SYNAPTICS_SYSCTL_WEIGHT_CURRENT =	SYN_OFFSET(weight_current),
	SYNAPTICS_SYSCTL_WEIGHT_PREVIOUS =	SYN_OFFSET(weight_previous),
	SYNAPTICS_SYSCTL_WEIGHT_PREVIOUS_NA =	SYN_OFFSET(weight_previous_na),
	SYNAPTICS_SYSCTL_WEIGHT_LEN_SQUARED =	SYN_OFFSET(weight_len_squared),
	SYNAPTICS_SYSCTL_DIV_MIN =		SYN_OFFSET(div_min),
	SYNAPTICS_SYSCTL_DIV_MAX =		SYN_OFFSET(div_max),
	SYNAPTICS_SYSCTL_DIV_MAX_NA =		SYN_OFFSET(div_max_na),
	SYNAPTICS_SYSCTL_DIV_LEN =		SYN_OFFSET(div_len),
	SYNAPTICS_SYSCTL_TAP_MAX_DELTA =	SYN_OFFSET(tap_max_delta),
	SYNAPTICS_SYSCTL_TAP_MIN_QUEUE =	SYN_OFFSET(tap_min_queue),
	SYNAPTICS_SYSCTL_TAPHOLD_TIMEOUT =	SYN_OFFSET(taphold_timeout),
	SYNAPTICS_SYSCTL_VSCROLL_HOR_AREA =	SYN_OFFSET(vscroll_hor_area),
	SYNAPTICS_SYSCTL_VSCROLL_VER_AREA =	SYN_OFFSET(vscroll_ver_area),
	SYNAPTICS_SYSCTL_VSCROLL_MIN_DELTA =	SYN_OFFSET(vscroll_min_delta),
	SYNAPTICS_SYSCTL_VSCROLL_DIV_MIN =	SYN_OFFSET(vscroll_div_min),
	SYNAPTICS_SYSCTL_VSCROLL_DIV_MAX =	SYN_OFFSET(vscroll_div_max),
	SYNAPTICS_SYSCTL_TOUCHPAD_OFF =		SYN_OFFSET(touchpad_off),
	SYNAPTICS_SYSCTL_SOFTBUTTONS_Y =	SYN_OFFSET(softbuttons_y),
	SYNAPTICS_SYSCTL_SOFTBUTTON2_X =	SYN_OFFSET(softbutton2_x),
	SYNAPTICS_SYSCTL_SOFTBUTTON3_X =	SYN_OFFSET(softbutton3_x),
};

/* packet formatting function */
typedef int	packetfunc_t(struct psm_softc *, u_char *, int *, int,
    mousestatus_t *);

static int	reinitialize(struct psm_softc *, int);
static char	*model_name(int);
static void	psmsoftintr(void *);
static void	psmsoftintridle(void *);
static void	psmintr(void *);
static void	psmtimeout(void *);
static int	timeelapsed(const struct timeval *, int, int,

		    mousestatus_t *, int *, int *, int *);
static void	proc_versapad(struct psm_softc *, packetbuf_t *,
		    mousestatus_t *, int *, int *, int *);
static int	proc_elantech(struct psm_softc *, packetbuf_t *,
		    mousestatus_t *, int *, int *, int *);
static int	psmpalmdetect(struct psm_softc *, finger_t *, int);
static void	psmgestures(struct psm_softc *, finger_t *, int,
		    mousestatus_t *);
static void	psmsmoother(struct psm_softc *, finger_t *, int,
		    mousestatus_t *, int *, int *);
static int	tame_mouse(struct psm_softc *, packetbuf_t *, mousestatus_t *,
		    u_char *);


static probefunc_t	enable_synaptics;
static probefunc_t	enable_trackpoint;
static probefunc_t	enable_versapad;
static probefunc_t	enable_elantech;

static void set_trackpoint_parameters(struct psm_softc *sc);
static void synaptics_passthrough_on(struct psm_softc *sc);

	  0xc8, MOUSE_4DPLUS_PACKETSIZE, enable_4dplus },
	{ MOUSE_MODEL_SYNAPTICS,	/* Synaptics Touchpad */
	  0xc0, MOUSE_SYNAPTICS_PACKETSIZE, enable_synaptics },
	{ MOUSE_MODEL_ELANTECH,		/* Elantech Touchpad */
	  0x04, MOUSE_ELANTECH_PACKETSIZE, enable_elantech },
	{ MOUSE_MODEL_INTELLI,		/* Microsoft IntelliMouse */
	  0x08, MOUSE_PS2INTELLI_PACKETSIZE, enable_msintelli },
	{ MOUSE_MODEL_GLIDEPOINT,	/* ALPS GlidePoint */

		{ MOUSE_MODEL_4DPLUS,		"4D+ Mouse" },
		{ MOUSE_MODEL_SYNAPTICS,	"Synaptics Touchpad" },
		{ MOUSE_MODEL_TRACKPOINT,	"IBM/Lenovo TrackPoint" },
		{ MOUSE_MODEL_ELANTECH,		"Elantech Touchpad" },
		{ MOUSE_MODEL_GENERIC,		"Generic PS/2 mouse" },
		{ MOUSE_MODEL_UNKNOWN,		"Unknown" },
	};

	case MOUSE_MODEL_SYNAPTICS:
	case MOUSE_MODEL_GLIDEPOINT:
	case MOUSE_MODEL_VERSAPAD:
	case MOUSE_MODEL_ELANTECH:
		sc->config |= PSM_CONFIG_INITAFTERSUSPEND;
		break;
	default:

		break;
	}

	/* Elantech trackpad`s sync bit differs from touchpad`s one */
	if (sc->hw.model == MOUSE_MODEL_ELANTECH &&
	    (sc->elanhw.hascrc || sc->elanhw.hastrackpad))
		sc->config |= PSM_CONFIG_NOCHECKSYNC;

	if (!verbose)
		printf("psm%d: model %s, device ID %d\n",
		    unit, model_name(sc->hw.model), sc->hw.hwid & 0x00ff);

		    (*(int *)addr > PSM_LEVEL_MAX))
			return (EINVAL);
		sc->mode.level = *(int *)addr;

		if (sc->hw.model == MOUSE_MODEL_SYNAPTICS) {
			/*
			 * If we are entering PSM_LEVEL_NATIVE, we want to
			 * enable sending of "extended W mode" packets to
			 * userland. Reset the mode of the touchpad so that the
			 * change in the level is picked up.
			 */
			error = block_mouse_data(sc, &command_byte);
			if (error)
				return (error);
			synaptics_set_mode(sc, synaptics_preferred_mode(sc));
			unblock_mouse_data(sc, command_byte);
		}
		break;

	case MOUSE_GETSTATUS:

{
	static int touchpad_buttons;
	static int guest_buttons;
	static finger_t f[PSM_FINGERS];
	int w, id, nfingers, ewcode;

	/* TouchPad PS/2 absolute mode message format with capFourButtons:
	 *

		return (-1);

	*x = *y = 0;
	ms->button = ms->obutton;

	/*
	 * Pressure value.

		w = 4;
	}

	switch (w) {
	case 3:
		/*
		 * Handle packets from the guest device. See:
		 * Synaptics PS/2 TouchPad Interfacing Guide, Section 5.1
		 */
		if (sc->synhw.capPassthrough) {
			*x = ((pb->ipacket[1] & 0x10) ?
			    pb->ipacket[4] - 256 : pb->ipacket[4]);
			*y = ((pb->ipacket[1] & 0x20) ?
			    pb->ipacket[5] - 256 : pb->ipacket[5]);
			*z = 0;

			guest_buttons = 0;
			if (pb->ipacket[1] & 0x01)
				guest_buttons |= MOUSE_BUTTON1DOWN;
			if (pb->ipacket[1] & 0x04)
				guest_buttons |= MOUSE_BUTTON2DOWN;
				if (pb->ipacket[1] & 0x02)
				guest_buttons |= MOUSE_BUTTON3DOWN;

			ms->button = touchpad_buttons | guest_buttons;
		}
		goto SYNAPTICS_END;

	case 2:
		/* Handle Extended W mode packets */
		ewcode = (pb->ipacket[5] & 0xf0) >> 4;
#if PSM_FINGERS > 1
		switch (ewcode) {
		case 1:
			/* Secondary finger */
			if (sc->synhw.capAdvancedGestures)
				f[1] = (finger_t) {
					.x = (((pb->ipacket[4] & 0x0f) << 8) |
					    pb->ipacket[1]) << 1,
					.y = (((pb->ipacket[4] & 0xf0) << 4) |
					    pb->ipacket[2]) << 1,
					.p = ((pb->ipacket[3] & 0x30) |
					    (pb->ipacket[5] & 0x0f)) << 1,
					.w = PSM_FINGER_DEFAULT_W,
					.flags = PSM_FINGER_FUZZY,
				};
			else if (sc->synhw.capReportsV)
				f[1] = (finger_t) {
					.x = (((pb->ipacket[4] & 0x0f) << 8) |
					    (pb->ipacket[1] & 0xfe)) << 1,
					.y = (((pb->ipacket[4] & 0xf0) << 4) |
					    (pb->ipacket[2] & 0xfe)) << 1,
					.p = ((pb->ipacket[3] & 0x30) |
					    (pb->ipacket[5] & 0x0e)) << 1,
					.w = (((pb->ipacket[5] & 0x01) << 2) |
					    ((pb->ipacket[2] & 0x01) << 1) |
					    (pb->ipacket[1] & 0x01)) + 8,
					.flags = PSM_FINGER_FUZZY,
				};
		default:
			break;
		}
#endif
		goto SYNAPTICS_END;

	case 1:
	case 0:
		nfingers = w + 2;
		break;

	default:
		nfingers = 1;
	}

	if (sc->syninfo.touchpad_off)
		*x = *y = *z = 0;
		ms->button = ms->obutton;
		goto SYNAPTICS_END;
	}

	/* Button presses */
	touchpad_buttons = 0;

		/* Middle Button */
		if ((pb->ipacket[0] ^ pb->ipacket[3]) & 0x01)
			touchpad_buttons |= MOUSE_BUTTON2DOWN;
	} else if (sc->synhw.capExtended && sc->synhw.capClickPad) {
		/* ClickPad Button */
		if ((pb->ipacket[0] ^ pb->ipacket[3]) & 0x01)
			touchpad_buttons = MOUSE_BUTTON1DOWN;
	} else if (sc->synhw.capExtended && (sc->synhw.nExtendedButtons > 0)) {
		/* Extended Buttons */
		if ((pb->ipacket[0] ^ pb->ipacket[3]) & 0x02) {

			pb->ipacket[4] &= ~(mask);
			pb->ipacket[5] &= ~(mask);
		} else	if (!sc->syninfo.directional_scrolls &&
		    !sc->gesture.in_vscroll) {
			/*
			 * Keep reporting MOUSE DOWN until we get a new packet
			 * indicating otherwise.

			touchpad_buttons |= sc->extended_buttons;
		}
	}

	if (sc->synhw.capReportsV && nfingers > 1)
		f[0] = (finger_t) {
			.x = ((pb->ipacket[3] & 0x10) << 8) |
			    ((pb->ipacket[1] & 0x0f) << 8) |
			    (pb->ipacket[4] & 0xfd),
			.y = ((pb->ipacket[3] & 0x20) << 7) |
			    ((pb->ipacket[1] & 0xf0) << 4) |
			    (pb->ipacket[5] & 0xfd),
			.p = *z & 0xfe,
			.w = (((pb->ipacket[2] & 0x01) << 2) |
			    (pb->ipacket[5] & 0x02) |
			    ((pb->ipacket[4] & 0x02) >> 1)) + 8,
			.flags = PSM_FINGER_FUZZY,
		};
	else
		f[0] = (finger_t) {
			.x = ((pb->ipacket[3] & 0x10) << 8) |
			    ((pb->ipacket[1] & 0x0f) << 8) |
			    pb->ipacket[4],
			.y = ((pb->ipacket[3] & 0x20) << 7) |
			    ((pb->ipacket[1] & 0xf0) << 4) |
			    pb->ipacket[5],
			.p = *z,
			.w = w,
			.flags = nfingers > 1 ? PSM_FINGER_FUZZY : 0,
		};

	/* Ignore hovering and unmeasurable touches */
	if (f[0].p < sc->syninfo.min_pressure || f[0].x < 2)
		nfingers = 0;

	for (id = 0; id < PSM_FINGERS; id++)
		if (id >= nfingers)
			PSM_FINGER_RESET(f[id]);

	ms->button = touchpad_buttons | guest_buttons;

	/* Palm detection doesn't terminate the current action. */
	if (!psmpalmdetect(sc, &f[0], nfingers)) {
		psmgestures(sc, &f[0], nfingers, ms);
		for (id = 0; id < PSM_FINGERS; id++)
			psmsmoother(sc, &f[id], id, ms, x, y);
	} else {
		VLOG(2, (LOG_DEBUG, "synaptics: palm detected! (%d)\n", f[0].w));
	}

SYNAPTICS_END:
	/*
	 * Use the extra buttons as a scrollwheel
	 *
	 * XXX X.Org uses the Z axis for vertical wheel only,
	 * whereas moused(8) understands special values to differ
	 * vertical and horizontal wheels.
	 *
	 * xf86-input-mouse needs therefore a small patch to
	 * understand these special values. Without it, the
	 * horizontal wheel acts as a vertical wheel in X.Org.
	 *
	 * That's why the horizontal wheel is disabled by
	 * default for now.
	 */
	if (ms->button & MOUSE_BUTTON4DOWN)
		*z = -1;
	else if (ms->button & MOUSE_BUTTON5DOWN)
		*z = 1;
	else if (ms->button & MOUSE_BUTTON6DOWN)
		*z = -2;
	else if (ms->button & MOUSE_BUTTON7DOWN)
		*z = 2;
	else
		*z = 0;
	ms->button &= ~(MOUSE_BUTTON4DOWN | MOUSE_BUTTON5DOWN |
	    MOUSE_BUTTON6DOWN | MOUSE_BUTTON7DOWN);

	return (0);
}

static int
psmpalmdetect(struct psm_softc *sc, finger_t *f, int nfingers)
{
	if (!(
	    ((sc->synhw.capMultiFinger ||
	      sc->synhw.capAdvancedGestures) && nfingers > 1) ||
	    (sc->synhw.capPalmDetect && f->w <= sc->syninfo.max_width) ||
	    (!sc->synhw.capPalmDetect && f->p <= sc->syninfo.max_pressure) ||
	    (sc->synhw.capPen && f->flags & PSM_FINGER_IS_PEN))) {
		/*
		 * We consider the packet irrelevant for the current
		 * action when:
		 *  - the width isn't comprised in:
		 *    [1; max_width]
		 *  - the pressure isn't comprised in:
		 *    [min_pressure; max_pressure]
		 *  - pen aren't supported but PSM_FINGER_IS_PEN is set
		 */
		return (1);
	}
	return (0);
}

static void
psmgestures(struct psm_softc *sc, finger_t *fingers, int nfingers,
    mousestatus_t *ms)
{
	smoother_t *smoother;
	gesture_t *gest;
	finger_t *f;
	int y_ok, center_button, center_x, right_button, right_x, i;

	f = &fingers[0];
	smoother = &sc->smoother[0];
	gest = &sc->gesture;

	/* Find first active finger. */
	if (nfingers > 0) {
		for (i = 0; i < PSM_FINGERS; i++) {
			if (PSM_FINGER_IS_SET(fingers[i])) {
				f = &fingers[i];
				smoother = &sc->smoother[i];
				break;
			}
		}
	}

	/*
	 * Check pressure to detect a real wanted action on the
	 * touchpad.
	 */
	if (f->p >= sc->syninfo.min_pressure) {
		int x0, y0;
		int dxp, dyp;
		int dx, dy, dxp, dyp;
		int max_width, max_pressure;
		int margin_top, margin_right, margin_bottom, margin_left;
		int na_top, na_right, na_bottom, na_left;
		int window_min, window_max;
		int multiplicator;
		int weight_current, weight_previous, weight_len_squared;
		int div_min, div_max, div_len;
		int vscroll_hor_area, vscroll_ver_area;
		int two_finger_scroll;
		int max_x, max_y;
		int div_max_x, div_max_y, div_x, div_y;
		int exiting_scroll;

		/* Read sysctl. */
		/* XXX Verify values? */
		max_width = sc->syninfo.max_width;
		max_pressure = sc->syninfo.max_pressure;
		margin_top = sc->syninfo.margin_top;
		margin_right = sc->syninfo.margin_right;
		margin_bottom = sc->syninfo.margin_bottom;
		margin_left = sc->syninfo.margin_left;
		na_top = sc->syninfo.na_top;
		na_right = sc->syninfo.na_right;
		na_bottom = sc->syninfo.na_bottom;
		na_left = sc->syninfo.na_left;
		window_min = sc->syninfo.window_min;
		window_max = sc->syninfo.window_max;
		multiplicator = sc->syninfo.multiplicator;
		weight_current = sc->syninfo.weight_current;
		weight_previous = sc->syninfo.weight_previous;
		weight_len_squared = sc->syninfo.weight_len_squared;
		div_min = sc->syninfo.div_min;
		div_max = sc->syninfo.div_max;
		div_len = sc->syninfo.div_len;
		vscroll_hor_area = sc->syninfo.vscroll_hor_area;
		vscroll_ver_area = sc->syninfo.vscroll_ver_area;
		two_finger_scroll = sc->syninfo.two_finger_scroll;
		max_x = sc->syninfo.max_x;
		max_y = sc->syninfo.max_y;

		/* Palm detection. */
		if (!(
		    ((sc->synhw.capMultiFinger ||
		      sc->synhw.capAdvancedGestures) && (w == 0 || w == 1)) ||
		    (sc->synhw.capPalmDetect && w >= 4 && w <= max_width) ||
		    (!sc->synhw.capPalmDetect && *z <= max_pressure) ||
		    (sc->synhw.capPen && w == 2))) {
			/*
			 * We consider the packet irrelevant for the current
			 * action when:
			 *  - the width isn't comprised in:
			 *    [4; max_width]
			 *  - the pressure isn't comprised in:
			 *    [min_pressure; max_pressure]
			 *  - pen aren't supported but w is 2
			 *
			 *  Note that this doesn't terminate the current action.
			 */
			VLOG(2, (LOG_DEBUG,
			    "synaptics: palm detected! (%d)\n", w));
			goto SYNAPTICS_END;
		}

		/* Read current absolute position. */
		x0 = f->x;
		y0 = f->y;

		/*
		 * Limit the coordinates to the specified margins because
		 * this area isn't very reliable.
		 */
		if (x0 <= margin_left)
			x0 = margin_left;
		else if (x0 >= max_x - margin_right)
			x0 = max_x - margin_right;
		if (y0 <= margin_bottom)
			y0 = margin_bottom;
		else if (y0 >= max_y - margin_top)
			y0 = max_y - margin_top;

		VLOG(3, (LOG_DEBUG, "synaptics: ipacket: [%d, %d], %d, %d\n",
		    x0, y0, f->p, f->w));

		/*
		 * If the action is just beginning, init the structure and

		if (!(sc->flags & PSM_FLAGS_FINGERDOWN)) {
			VLOG(3, (LOG_DEBUG, "synaptics: ----\n"));

			/* Store the first point of this action. */
			synaction->start_x = x0;
			synaction->start_y = y0;
			dx = dy = 0;

			/* Initialize queue. */
			gest->window_min = window_min;
			synaction->queue_len = 0;
			synaction->window_min = window_min;

			/* Reset average. */
			synaction->avg_dx = 0;
			synaction->avg_dy = 0;

			/* Reset squelch. */
			synaction->squelch_x = 0;
			synaction->squelch_y = 0;

			/* Reset pressure peak. */
			gest->zmax = 0;

			/* Reset fingers count. */
			gest->fingers_nb = 0;

			/* Reset virtual scrolling state. */
			gest->in_vscroll = 0;

			/* Compute tap timeout. */
			gest->taptimeout.tv_sec  = tap_timeout / 1000000;
			gest->taptimeout.tv_usec = tap_timeout % 1000000;
			timevaladd(&gest->taptimeout, &sc->lastsoftintr);

			sc->flags |= PSM_FLAGS_FINGERDOWN;
		} else {
			/* Calculate the current delta. */
			cursor = synaction->queue_cursor;
			dx = x0 - synaction->queue[cursor].x;
			dy = y0 - synaction->queue[cursor].y;
		}

		/* If in tap-hold, add the recorded button. */
		if (synaction->in_taphold)
			ms->button |= synaction->tap_button;

		/* Process ClickPad softbuttons */
		if (sc->synhw.capClickPad && ms->button & MOUSE_BUTTON1DOWN) {
			y_ok = sc->syninfo.softbuttons_y >= 0 ?
			    f->y < sc->syninfo.softbuttons_y :
			    f->y > max_y - sc->syninfo.softbuttons_y;

			center_button = MOUSE_BUTTON2DOWN;
			center_x = sc->syninfo.softbutton2_x;
			right_button = MOUSE_BUTTON3DOWN;
			right_x = sc->syninfo.softbutton3_x;
		if (x0 <= margin_left)
			x0 = margin_left;
		else if (x0 >= 6143 - margin_right)
			x0 = 6143 - margin_right;
		if (y0 <= margin_bottom)
			y0 = margin_bottom;
		else if (y0 >= 6143 - margin_top)
			y0 = 6143 - margin_top;

			if (center_x > 0 && right_x > 0 && center_x > right_x) {
				center_button = MOUSE_BUTTON3DOWN;
				center_x = sc->syninfo.softbutton3_x;
				right_button = MOUSE_BUTTON2DOWN;
				right_x = sc->syninfo.softbutton2_x;
			}

			if (right_x > 0 && smoother->start_x > right_x && y_ok)
				ms->button = (ms->button &
				    ~MOUSE_BUTTON1DOWN) | right_button;
			else if (center_x > 0 &&
				 smoother->start_x > center_x && y_ok)
				ms->button = (ms->button &
				    ~MOUSE_BUTTON1DOWN) | center_button;
		}

		/* If in tap-hold, add the recorded button. */
		if (gest->in_taphold)
			ms->button |= gest->tap_button;

		/*
		 * For tap, we keep the maximum number of fingers and the
		 * pressure peak. Also with multiple fingers, we increase
		 * the minimum window.
		 */
		if (nfingers > 1)
			gest->window_min = window_max;
		gest->fingers_nb = imax(nfingers, gest->fingers_nb);
		gest->zmax = imax(f->p, gest->zmax);
			break;
		case 0: /* Two fingers. */
			synaction->fingers_nb = imax(2, synaction->fingers_nb);
			synaction->window_min = window_max;
			break;
		default: /* One finger or undetectable. */
			synaction->fingers_nb = imax(1, synaction->fingers_nb);
		}
		sc->zmax = imax(*z, sc->zmax);

		/* Do we have enough packets to consider this a gesture? */
		if (smoother->queue_len + 1 < gest->window_min)
			return;

		/* Is a scrolling action occurring? */
		if (!gest->in_taphold && !ms->button &&
		    (!gest->in_vscroll || two_finger_scroll)) {
			/*
			 * A scrolling action must not conflict with a tap
			 * action. Here are the conditions to consider a

			 *       first should be above a configurable minimum
			 *     . tap timed out
			 */
			dxp = abs(x0 - smoother->start_x);
			dyp = abs(y0 - smoother->start_y);
			dyp = abs(synaction->queue[synaction->queue_cursor].y -
			    synaction->start_y);

			if (timevalcmp(&sc->lastsoftintr, &gest->taptimeout, >) ||
			    dxp >= sc->syninfo.vscroll_min_delta ||
			    dyp >= sc->syninfo.vscroll_min_delta) {
				/*

				 * as that keeps the maximum number of fingers.
				 */
				if (two_finger_scroll) {
					if (nfingers == 2) {
						gest->in_vscroll +=
						    dyp ? 2 : 0;
						gest->in_vscroll +=
						    dxp ? 1 : 0;
					}
				} else {
					/* Check for horizontal scrolling. */
					if ((vscroll_hor_area > 0 &&
					    smoother->start_y <=
					        vscroll_hor_area) ||
					    (vscroll_hor_area < 0 &&
					     smoother->start_y >=
					     max_y + vscroll_hor_area))
						gest->in_vscroll += 2;

					/* Check for vertical scrolling. */
					if ((vscroll_ver_area > 0 &&
					    smoother->start_x <=
						vscroll_ver_area) ||
					    (vscroll_ver_area < 0 &&
					     smoother->start_x >=
					     max_x + vscroll_ver_area))
						gest->in_vscroll += 1;
				}

				/* Avoid conflicts if area overlaps. */
				if (gest->in_vscroll >= 3)
					gest->in_vscroll =
					    (dxp > dyp) ? 2 : 1;
			}
		}
		/*
		 * Reset two finger scrolling when the number of fingers
		 * is different from two or any button is pressed.
		 */
		if (two_finger_scroll && gest->in_vscroll != 0 &&
		    (nfingers != 2 || ms->button))
			gest->in_vscroll = 0;
		}

		VLOG(5, (LOG_DEBUG,
			"synaptics: virtual scrolling: %s "
			"(direction=%d, dxp=%d, dyp=%d, fingers=%d)\n",
			gest->in_vscroll ? "YES" : "NO",
			gest->in_vscroll, dxp, dyp,
			gest->fingers_nb));

		weight_prev_x = weight_prev_y = weight_previous;
		div_max_x = div_max_y = div_max;

		if (synaction->in_vscroll) {
			/* Dividers are different with virtual scrolling. */
			div_min = sc->syninfo.vscroll_div_min;
			div_max_x = div_max_y = sc->syninfo.vscroll_div_max;
		} else {
			/*
			 * There's a lot of noise in coordinates when
			 * the finger is on the touchpad's borders. When
			 * using this area, we apply a special weight and
			 * div.
			 */
			if (x0 <= na_left || x0 >= 6143 - na_right) {
				weight_prev_x = sc->syninfo.weight_previous_na;
				div_max_x = sc->syninfo.div_max_na;
			}

			if (y0 <= na_bottom || y0 >= 6143 - na_top) {
				weight_prev_y = sc->syninfo.weight_previous_na;
				div_max_y = sc->syninfo.div_max_na;
			}
		}

		/*
		 * Calculate weights for the average operands and
		 * the divisor. Both depend on the distance between
		 * the current packet and a previous one (based on the
		 * window width).
		 */
		window = imin(synaction->queue_len, window_max);
		peer = SYNAPTICS_QUEUE_CURSOR(cursor + window - 1);
		dxp = abs(x0 - synaction->queue[peer].x) + 1;
		dyp = abs(y0 - synaction->queue[peer].y) + 1;
		len = (dxp * dxp) + (dyp * dyp);
		weight_prev_x = imin(weight_prev_x,
		    weight_len_squared * weight_prev_x / len);
		weight_prev_y = imin(weight_prev_y,
		    weight_len_squared * weight_prev_y / len);

		len = (dxp + dyp) / 2;
		div_x = div_len * div_max_x / len;
		div_x = imin(div_max_x, div_x);
		div_x = imax(div_min, div_x);
		div_y = div_len * div_max_y / len;
		div_y = imin(div_max_y, div_y);
		div_y = imax(div_min, div_y);

		VLOG(3, (LOG_DEBUG,
		    "synaptics: peer=%d, len=%d, weight=%d/%d, div=%d/%d\n",
		    peer, len, weight_prev_x, weight_prev_y, div_x, div_y));

		/* Compute averages. */
		synaction->avg_dx =
		    (weight_current * dx * multiplicator +
		     weight_prev_x * synaction->avg_dx) /
		    (weight_current + weight_prev_x);

		synaction->avg_dy =
		    (weight_current * dy * multiplicator +
		     weight_prev_y * synaction->avg_dy) /
		    (weight_current + weight_prev_y);

		VLOG(5, (LOG_DEBUG,
		    "synaptics: avg_dx~=%d, avg_dy~=%d\n",
		    synaction->avg_dx / multiplicator,
		    synaction->avg_dy / multiplicator));

		/* Use these averages to calculate x & y. */
		synaction->squelch_x += synaction->avg_dx;
		*x = synaction->squelch_x / (div_x * multiplicator);
		synaction->squelch_x = synaction->squelch_x %
		    (div_x * multiplicator);

		synaction->squelch_y += synaction->avg_dy;
		*y = synaction->squelch_y / (div_y * multiplicator);
		synaction->squelch_y = synaction->squelch_y %
		    (div_y * multiplicator);

		if (synaction->in_vscroll) {
			switch(synaction->in_vscroll) {
			case 1: /* Vertical scrolling. */
				if (*y != 0)
					ms->button |= (*y > 0) ?
					    MOUSE_BUTTON4DOWN :
					    MOUSE_BUTTON5DOWN;
				break;
			case 2: /* Horizontal scrolling. */
				if (*x != 0)
					ms->button |= (*x > 0) ?
					    MOUSE_BUTTON7DOWN :
					    MOUSE_BUTTON6DOWN;
				break;
			}

			/* The pointer is not moved. */
			*x = *y = 0;
		} else {
			/* On exit the x/y pos may jump, ignore this */
			if (exiting_scroll)
				*x = *y = 0;

			VLOG(3, (LOG_DEBUG, "synaptics: [%d, %d] -> [%d, %d]\n",
			    dx, dy, *x, *y));
		}
	} else if (sc->flags & PSM_FLAGS_FINGERDOWN) {
		/*
		 * An action is currently taking place but the pressure
		 * dropped under the minimum, putting an end to it.
		 */
		synapticsaction_t *synaction;
		int taphold_timeout, dx, dy, tap_max_delta;

		dx = abs(smoother->queue[smoother->queue_cursor].x -
		    smoother->start_x);
		dy = abs(smoother->queue[smoother->queue_cursor].y -
		    smoother->start_y);
		    synaction->start_y);

		/* Max delta is disabled for multi-fingers tap. */
		if (gest->fingers_nb > 1)
			tap_max_delta = imax(dx, dy);
		else
			tap_max_delta = sc->syninfo.tap_max_delta;

		VLOG(3, (LOG_DEBUG,
		    "synaptics: zmax=%d, dx=%d, dy=%d, "
		    "delta=%d, fingers=%d, queue=%d\n",
		    gest->zmax, dx, dy, tap_max_delta, gest->fingers_nb,
		    smoother->queue_len));
		if (!gest->in_vscroll && gest->zmax >= tap_threshold &&
		    timevalcmp(&sc->lastsoftintr, &gest->taptimeout, <=) &&
		    dx <= tap_max_delta && dy <= tap_max_delta &&
		    smoother->queue_len >= sc->syninfo.tap_min_queue) {
			/*
			 * We have a tap if:
			 *   - the maximum pressure went over tap_threshold

			 * To handle tap-hold, we must delay any button push to
			 * the next action.
			 */
			if (gest->in_taphold) {
				/*
				 * This is the second and last tap of a
				 * double tap action, not a tap-hold.
				 */
				gest->in_taphold = 0;

				/*
				 * For double-tap to work:

				 */
				VLOG(2, (LOG_DEBUG,
				    "synaptics: button RELEASE: %d\n",
				    gest->tap_button));
				sc->flags |= PSM_FLAGS_FINGERDOWN;

				/* Schedule button press on next interrupt */
				sc->idletimeout.tv_sec  = psmhz > 1 ?
				    0 : 1;
				sc->idletimeout.tv_usec = psmhz > 1 ?
				    1000000 / psmhz : 0;
			} else {
				/*
				 * This is the first tap: we set the
				 * tap-hold state and notify the button
				 * down event.
				 */
				gest->in_taphold = 1;
				taphold_timeout = sc->syninfo.taphold_timeout;
				gest->taptimeout.tv_sec  = taphold_timeout /
				    1000000;
				gest->taptimeout.tv_usec = taphold_timeout %
				    1000000;
				sc->idletimeout = gest->taptimeout;
				timevaladd(&gest->taptimeout,
				    &sc->lastsoftintr);

				switch (gest->fingers_nb) {
				case 3:
					gest->tap_button =
					    MOUSE_BUTTON2DOWN;
					break;
				case 2:
					gest->tap_button =
					    MOUSE_BUTTON3DOWN;
					break;
				default:
					gest->tap_button =
					    MOUSE_BUTTON1DOWN;
				}
				VLOG(2, (LOG_DEBUG,
				    "synaptics: button PRESS: %d\n",
				    gest->tap_button));
				ms->button |= gest->tap_button;
			}
		} else {
			/*
			 * Not enough pressure or timeout: reset
			 * tap-hold state.
			 */
			if (gest->in_taphold) {
				VLOG(2, (LOG_DEBUG,
				    "synaptics: button RELEASE: %d\n",
				    gest->tap_button));
				gest->in_taphold = 0;
			} else {
				VLOG(2, (LOG_DEBUG,
				    "synaptics: not a tap-hold\n"));
			}
		}
	} else if (!(sc->flags & PSM_FLAGS_FINGERDOWN) && gest->in_taphold) {
	    sc->synaction.in_taphold) {
		/*
		 * For a tap-hold to work, the button must remain down at
		 * least until timeout (where the in_taphold flags will be
		 * cleared) or during the next action.
		 */
		if (timevalcmp(&sc->lastsoftintr, &gest->taptimeout, <=)) {
			ms->button |= gest->tap_button;
		} else {
			VLOG(2, (LOG_DEBUG, "synaptics: button RELEASE: %d\n",
			    gest->tap_button));
			gest->in_taphold = 0;
			sc->synaction.in_taphold = 0;
		}
	}

	return;
}

static void
psmsmoother(struct psm_softc *sc, finger_t *f, int smoother_id,
    mousestatus_t *ms, int *x, int *y)
{
	smoother_t *smoother = &sc->smoother[smoother_id];
	gesture_t *gest = &(sc->gesture);

	/*
	 * Check pressure to detect a real wanted action on the
	 * touchpad.
	 * XXX X.Org uses the Z axis for vertical wheel only,
	 * whereas moused(8) understands special values to differ
	 * vertical and horizontal wheels.
	 *
	 * xf86-input-mouse needs therefore a small patch to
	 * understand these special values. Without it, the
	 * horizontal wheel acts as a vertical wheel in X.Org.
	 *
	 * That's why the horizontal wheel is disabled by
	 * default for now.
	 */
	if (f->p >= sc->syninfo.min_pressure) {
		int x0, y0;
		int cursor, peer, window;
		int dx, dy, dxp, dyp;
		int max_width, max_pressure;
		int margin_top, margin_right, margin_bottom, margin_left;
		int na_top, na_right, na_bottom, na_left;
		int window_min, window_max;
		int multiplicator;
		int weight_current, weight_previous, weight_len_squared;
		int div_min, div_max, div_len;
		int vscroll_hor_area, vscroll_ver_area;
		int two_finger_scroll;
		int max_x, max_y;
		int len, weight_prev_x, weight_prev_y;
		int div_max_x, div_max_y, div_x, div_y;
		int is_fuzzy;

		/* Read sysctl. */
		/* XXX Verify values? */
		max_width = sc->syninfo.max_width;
		max_pressure = sc->syninfo.max_pressure;
		margin_top = sc->syninfo.margin_top;
		margin_right = sc->syninfo.margin_right;
		margin_bottom = sc->syninfo.margin_bottom;
		margin_left = sc->syninfo.margin_left;
		na_top = sc->syninfo.na_top;
		na_right = sc->syninfo.na_right;
		na_bottom = sc->syninfo.na_bottom;
		na_left = sc->syninfo.na_left;
		window_min = sc->syninfo.window_min;
		window_max = sc->syninfo.window_max;
		multiplicator = sc->syninfo.multiplicator;
		weight_current = sc->syninfo.weight_current;
		weight_previous = sc->syninfo.weight_previous;
		weight_len_squared = sc->syninfo.weight_len_squared;
		div_min = sc->syninfo.div_min;
		div_max = sc->syninfo.div_max;
		div_len = sc->syninfo.div_len;
		vscroll_hor_area = sc->syninfo.vscroll_hor_area;
		vscroll_ver_area = sc->syninfo.vscroll_ver_area;
		two_finger_scroll = sc->syninfo.two_finger_scroll;
		max_x = sc->syninfo.max_x;
		max_y = sc->syninfo.max_y;

		is_fuzzy = (f->flags & PSM_FINGER_FUZZY) != 0;

		/* Read current absolute position. */
		x0 = f->x;
		y0 = f->y;

		/*
		 * Limit the coordinates to the specified margins because
		 * this area isn't very reliable.
		 */
		if (x0 <= margin_left)
			x0 = margin_left;
		else if (x0 >= max_x - margin_right)
			x0 = max_x - margin_right;
		if (y0 <= margin_bottom)
			y0 = margin_bottom;
		else if (y0 >= max_y - margin_top)
			y0 = max_y - margin_top;

		/* If the action is just beginning, init the structure. */
		if (smoother->active == 0) {
			VLOG(3, (LOG_DEBUG, "smoother%d: ---\n", smoother_id));

			/* Store the first point of this action. */
			smoother->start_x = x0;
			smoother->start_y = y0;
			dx = dy = 0;

			/* Initialize queue. */
			smoother->queue_cursor = SYNAPTICS_PACKETQUEUE;
			smoother->queue_len = 0;

			/* Reset average. */
			smoother->avg_dx = 0;
			smoother->avg_dy = 0;

			/* Reset squelch. */
			smoother->squelch_x = 0;
			smoother->squelch_y = 0;

			/* Activate queue */
			smoother->active = 1;
		} else {
			/* Calculate the current delta. */
			cursor = smoother->queue_cursor;
			dx = x0 - smoother->queue[cursor].x;
			dy = y0 - smoother->queue[cursor].y;
		}

		VLOG(3, (LOG_DEBUG, "smoother%d: ipacket: [%d, %d], %d, %d\n",
		    smoother_id, x0, y0, f->p, f->w));

		/* Queue this new packet. */
		cursor = SYNAPTICS_QUEUE_CURSOR(smoother->queue_cursor - 1);
		smoother->queue[cursor].x = x0;
		smoother->queue[cursor].y = y0;
		smoother->queue_cursor = cursor;
		if (smoother->queue_len < SYNAPTICS_PACKETQUEUE)
			smoother->queue_len++;
		VLOG(5, (LOG_DEBUG,
		    "smoother%d: cursor[%d]: x=%d, y=%d, dx=%d, dy=%d\n",
		    smoother_id, cursor, x0, y0, dx, dy));

		/* Do we have enough packets to consider this a movement? */
		if (smoother->queue_len < gest->window_min)
			return;

		weight_prev_x = weight_prev_y = weight_previous;
		div_max_x = div_max_y = div_max;

		if (gest->in_vscroll) {
			/* Dividers are different with virtual scrolling. */
			div_min = sc->syninfo.vscroll_div_min;
			div_max_x = div_max_y = sc->syninfo.vscroll_div_max;
		} else {
			/*
			 * There's a lot of noise in coordinates when
			 * the finger is on the touchpad's borders. When
			 * using this area, we apply a special weight and
			 * div.
			 */
			if (x0 <= na_left || x0 >= max_x - na_right) {
				weight_prev_x = sc->syninfo.weight_previous_na;
				div_max_x = sc->syninfo.div_max_na;
			}

			if (y0 <= na_bottom || y0 >= max_y - na_top) {
				weight_prev_y = sc->syninfo.weight_previous_na;
				div_max_y = sc->syninfo.div_max_na;
			}
		}

		/*
		 * Calculate weights for the average operands and
		 * the divisor. Both depend on the distance between
		 * the current packet and a previous one (based on the
		 * window width).
		 */
		window = imin(smoother->queue_len, window_max);
		peer = SYNAPTICS_QUEUE_CURSOR(cursor + window - 1);
		dxp = abs(x0 - smoother->queue[peer].x) + 1;
		dyp = abs(y0 - smoother->queue[peer].y) + 1;
		len = (dxp * dxp) + (dyp * dyp);
		weight_prev_x = imin(weight_prev_x,
		    weight_len_squared * weight_prev_x / len);
		weight_prev_y = imin(weight_prev_y,
		    weight_len_squared * weight_prev_y / len);

		len = (dxp + dyp) / 2;
		div_x = div_len * div_max_x / len;
		div_x = imin(div_max_x, div_x);
		div_x = imax(div_min, div_x);
		div_y = div_len * div_max_y / len;
		div_y = imin(div_max_y, div_y);
		div_y = imax(div_min, div_y);

		VLOG(3, (LOG_DEBUG,
		    "smoother%d: peer=%d, len=%d, weight=%d/%d, div=%d/%d\n",
		    smoother_id, peer, len, weight_prev_x, weight_prev_y,
		    div_x, div_y));

		/* Compute averages. */
		smoother->avg_dx =
		    (weight_current * dx * multiplicator +
		     weight_prev_x * smoother->avg_dx) /
		    (weight_current + weight_prev_x);

		smoother->avg_dy =
		    (weight_current * dy * multiplicator +
		     weight_prev_y * smoother->avg_dy) /
		    (weight_current + weight_prev_y);

		VLOG(5, (LOG_DEBUG,
		    "smoother%d: avg_dx~=%d, avg_dy~=%d\n", smoother_id,
		    smoother->avg_dx / multiplicator,
		    smoother->avg_dy / multiplicator));

		/* Use these averages to calculate x & y. */
		smoother->squelch_x += smoother->avg_dx;
		dxp = smoother->squelch_x / (div_x * multiplicator);
		smoother->squelch_x = smoother->squelch_x %
		    (div_x * multiplicator);

		smoother->squelch_y += smoother->avg_dy;
		dyp = smoother->squelch_y / (div_y * multiplicator);
		smoother->squelch_y = smoother->squelch_y %
		    (div_y * multiplicator);

		switch(gest->in_vscroll) {
		case 0: /* Pointer movement. */
			/* On real<->fuzzy finger switch the x/y pos jumps */
			if (is_fuzzy == smoother->is_fuzzy) {
				*x += dxp;
				*y += dyp;
			}

			VLOG(3, (LOG_DEBUG, "smoother%d: [%d, %d] -> [%d, %d]\n",
			    smoother_id, dx, dy, dxp, dyp));
			break;
		case 1: /* Vertical scrolling. */
			if (dyp != 0)
				ms->button |= (dyp > 0) ?
				    MOUSE_BUTTON4DOWN : MOUSE_BUTTON5DOWN;
			break;
		case 2: /* Horizontal scrolling. */
			if (dxp != 0)
				ms->button |= (dxp > 0) ?
				    MOUSE_BUTTON7DOWN : MOUSE_BUTTON6DOWN;
			break;
		}

		smoother->is_fuzzy = is_fuzzy;

	} else {
		/*
		 * Deactivate queue. Note: We can not just reset queue here
		 * as these values are still used by gesture processor.
		 * So postpone reset till next touch.
		 */
		smoother->active = 0;
	}
}

static int
proc_elantech(struct psm_softc *sc, packetbuf_t *pb, mousestatus_t *ms,
    int *x, int *y, int *z)
{
	static int touchpad_button, trackpoint_button;
	finger_t fn, f[ELANTECH_MAX_FINGERS];
	int pkt, id, scale, i, nfingers, mask;

	if (!elantech_support)
		return (0);

	/* Determine packet format and do a sanity check for out of sync packets. */
	if (ELANTECH_PKT_IS_DEBOUNCE(pb, sc->elanhw.hwversion))
		pkt = ELANTECH_PKT_NOP;
	else if (ELANTECH_PKT_IS_TRACKPOINT(pb))
		pkt = ELANTECH_PKT_TRACKPOINT;
	else
	switch (sc->elanhw.hwversion) {
	case 2:
		if (!ELANTECH_PKT_IS_V2(pb))
			return (-1);

		pkt = (pb->ipacket[0] & 0xc0) == 0x80 ?
		    ELANTECH_PKT_V2_2FINGER : ELANTECH_PKT_V2_COMMON;
		break;
	case 3:
		if (!ELANTECH_PKT_IS_V3_HEAD(pb, sc->elanhw.hascrc) &&
		    !ELANTECH_PKT_IS_V3_TAIL(pb, sc->elanhw.hascrc))
			return (-1);

		pkt = ELANTECH_PKT_V3;
		break;
	case 4:
		if (!ELANTECH_PKT_IS_V4(pb, sc->elanhw.hascrc))
			return (-1);

		switch (pb->ipacket[3] & 0x03) {
		case 0x00:
			pkt = ELANTECH_PKT_V4_STATUS;
			break;
		case 0x01:
			pkt = ELANTECH_PKT_V4_HEAD;
			break;
		case 0x02:
			pkt = ELANTECH_PKT_V4_MOTION;
			break;
		default:
			return (-1);
		}
		break;
	default:
		return (-1);
	}

	VLOG(5, (LOG_DEBUG, "elantech: ipacket format: %d\n", pkt));

	for (id = 0; id < ELANTECH_MAX_FINGERS; id++)
		PSM_FINGER_RESET(f[id]);

	*x = *y = *z = 0;
	ms->button = ms->obutton;

	if (sc->syninfo.touchpad_off)
		return (0);

	/* Common legend
	 * L: Left mouse button pressed
	 * R: Right mouse button pressed
	 * N: number of fingers on touchpad
	 * X: absolute x value (horizontal)
	 * Y: absolute y value (vertical)
	 * W; width of the finger touch
	 * P: pressure
	 */
	switch (pkt) {
	case ELANTECH_PKT_V2_COMMON:	/* HW V2. One/Three finger touch */
		/*               7   6   5   4   3   2   1   0 (LSB)
		 * -------------------------------------------
		 * ipacket[0]:  N1  N0  W3  W2   .   .   R   L
		 * ipacket[1]:  P7  P6  P5  P4 X11 X10  X9  X8
		 * ipacket[2]:  X7  X6  X5  X4  X3  X2  X1  X0
		 * ipacket[3]:  N4  VF  W1  W0   .   .   .  B2
		 * ipacket[4]:  P3  P1  P2  P0 Y11 Y10  Y9  Y8
		 * ipacket[5]:  Y7  Y6  Y5  Y4  Y3  Y2  Y1  Y0
		 * -------------------------------------------
		 * N4: set if more than 3 fingers (only in 3 fingers mode)
		 * VF: a kind of flag? (only on EF123, 0 when finger
		 *     is over one of the buttons, 1 otherwise)
		 * B2: (on EF113 only, 0 otherwise), one button pressed
		 * P & W is not reported on EF113 touchpads
		 */
		nfingers = (pb->ipacket[0] & 0xc0) >> 6;
		if (nfingers == 3 && (pb->ipacket[3] & 0x80))
			nfingers = 4;
		mask = (1 << nfingers) - 1;

		fn = ELANTECH_FINGER_SET_XYP(pb);
		if (sc->elanhw.haspressure) {
			fn.w = ((pb->ipacket[0] & 0x30) >> 2) |
			    ((pb->ipacket[3] & 0x30) >> 4);
		} else {
			fn.p = PSM_FINGER_DEFAULT_P;
			fn.w = PSM_FINGER_DEFAULT_W;
		}

		/*
		 * HW v2 dont report exact finger positions when 3 or more
		 * fingers are on touchpad. Use reported value as fingers
		 * position as it is required for tap detection
		 */
		if (nfingers > 2)
			fn.flags = PSM_FINGER_FUZZY;

		for (id = 0; id < imin(nfingers, ELANTECH_MAX_FINGERS); id++)
			f[id] = fn;
		break;

	case ELANTECH_PKT_V2_2FINGER:	/*HW V2. Two finger touch */
		/*               7   6   5   4   3   2   1   0 (LSB)
		 * -------------------------------------------
		 * ipacket[0]:  N1  N0 AY8 AX8   .   .   R   L
		 * ipacket[1]: AX7 AX6 AX5 AX4 AX3 AX2 AX1 AX0
		 * ipacket[2]: AY7 AY6 AY5 AY4 AY3 AY2 AY1 AY0
		 * ipacket[3]:   .   . BY8 BX8   .   .   .   .
		 * ipacket[4]: BX7 BX6 BX5 BX4 BX3 BX2 BX1 BX0
		 * ipacket[5]: BY7 BY6 BY5 BY4 BY3 BY2 BY1 BY0
		 * -------------------------------------------
		 * AX: lower-left finger absolute x value
		 * AY: lower-left finger absolute y value
		 * BX: upper-right finger absolute x value
		 * BY: upper-right finger absolute y value
		 */
		nfingers = 2;
		mask = (1 << nfingers) - 1;

		for (id = 0; id < imin(2, ELANTECH_MAX_FINGERS); id ++)
			f[id] = (finger_t) {
				.x = (((pb->ipacket[id * 3] & 0x10) << 4) |
				    pb->ipacket[id * 3 + 1]) << 2,
				.y = (((pb->ipacket[id * 3] & 0x20) << 3) |
				    pb->ipacket[id * 3 + 2]) << 2,
				.p = PSM_FINGER_DEFAULT_P,
				.w = PSM_FINGER_DEFAULT_W,
				/* HW ver.2 sends bounding box */
				.flags = PSM_FINGER_FUZZY
			};
		break;

	case ELANTECH_PKT_V3:	/* HW Version 3 */
		/*               7   6   5   4   3   2   1   0 (LSB)
		 * -------------------------------------------
		 * ipacket[0]:  N1  N0  W3  W2   0   1   R   L
		 * ipacket[1]:  P7  P6  P5  P4 X11 X10  X9  X8
		 * ipacket[2]:  X7  X6  X5  X4  X3  X2  X1  X0
		 * ipacket[3]:   0   0  W1  W0   0   0   1   0
		 * ipacket[4]:  P3  P1  P2  P0 Y11 Y10  Y9  Y8
		 * ipacket[5]:  Y7  Y6  Y5  Y4  Y3  Y2  Y1  Y0
		 * -------------------------------------------
		 */
		nfingers = (pb->ipacket[0] & 0xc0) >> 6;
		mask = (1 << nfingers) - 1;
		id = nfingers - 1;

		fn = ELANTECH_FINGER_SET_XYP(pb);
		fn.w = ((pb->ipacket[0] & 0x30) >> 2) |
		    ((pb->ipacket[3] & 0x30) >> 4);

		/*
		 * HW v3 dont report exact finger positions when 3 or more
		 * fingers are on touchpad. Use reported value as fingers
		 * position as it is required for tap detection
		 */
		if (nfingers > 1)
			fn.flags = PSM_FINGER_FUZZY;

		for (id = 0; id < imin(nfingers, ELANTECH_MAX_FINGERS); id++)
			f[id] = fn;

		if (nfingers == 2) {
			if (ELANTECH_PKT_IS_V3_HEAD(pb, sc->elanhw.hascrc)) {
				sc->elanaction.fingers[0] = fn;
				return (0);
			} else
				f[0] = sc->elanaction.fingers[0];
		}
		break;

	case ELANTECH_PKT_V4_STATUS:	/* HW Version 4. Status packet */
		/*               7   6   5   4   3   2   1   0 (LSB)
		 * -------------------------------------------
		 * ipacket[0]:   .   .   .   .   0   1   R   L
		 * ipacket[1]:   .   .   .  F4  F3  F2  F1  F0
		 * ipacket[2]:   .   .   .   .   .   .   .   .
		 * ipacket[3]:   .   .   .   1   0   0   0   0
		 * ipacket[4]:  PL   .   .   .   .   .   .   .
		 * ipacket[5]:   .   .   .   .   .   .   .   .
		 * -------------------------------------------
		 * Fn: finger n is on touchpad
		 * PL: palm
		 * HV ver4 sends a status packet to indicate that the numbers
		 * or identities of the fingers has been changed
		 */

		mask = pb->ipacket[1] & 0x1f;
		nfingers = bitcount(mask);

		/* Skip "new finger is on touchpad" packets */
		if ((sc->elanaction.mask & mask) == sc->elanaction.mask &&
		    (mask & ~sc->elanaction.mask)) {
			sc->elanaction.mask = mask;
			return (0);
		}

		break;

	case ELANTECH_PKT_V4_HEAD:	/* HW Version 4. Head packet */
		/*               7   6   5   4   3   2   1   0 (LSB)
		 * -------------------------------------------
		 * ipacket[0]:  W3  W2  W1  W0   0   1   R   L
		 * ipacket[1]:  P7  P6  P5  P4 X11 X10  X9  X8
		 * ipacket[2]:  X7  X6  X5  X4  X3  X2  X1  X0
		 * ipacket[3]: ID2 ID1 ID0   1   0   0   0   1
		 * ipacket[4]:  P3  P1  P2  P0 Y11 Y10  Y9  Y8
		 * ipacket[5]:  Y7  Y6  Y5  Y4  Y3  Y2  Y1  Y0
		 * -------------------------------------------
		 * ID: finger id
		 * HW ver 4 sends head packets in two cases:
		 * 1. One finger touch and movement.
		 * 2. Next after status packet to tell new finger positions.
		 */
		mask = sc->elanaction.mask;
		nfingers = bitcount(mask);
		id = ((pb->ipacket[3] & 0xe0) >> 5) - 1;

		if (id >= 0 && id < ELANTECH_MAX_FINGERS) {
			f[id] = ELANTECH_FINGER_SET_XYP(pb);
			f[id].w = (pb->ipacket[0] & 0xf0) >> 4;
		}
		break;

	case ELANTECH_PKT_V4_MOTION:	/* HW Version 4. Motion packet */
		/*               7   6   5   4   3   2   1   0 (LSB)
		 * -------------------------------------------
		 * ipacket[0]: ID2 ID1 ID0  OF   0   1   R   L
		 * ipacket[1]: DX7 DX6 DX5 DX4 DX3 DX2 DX1 DX0
		 * ipacket[2]: DY7 DY6 DY5 DY4 DY3 DY2 DY1 DY0
		 * ipacket[3]: ID2 ID1 ID0   1   0   0   1   0
		 * ipacket[4]: DX7 DX6 DX5 DX4 DX3 DX2 DX1 DX0
		 * ipacket[5]: DY7 DY6 DY5 DY4 DY3 DY2 DY1 DY0
		 * -------------------------------------------
		 * OF: delta overflows (> 127 or < -128), in this case
		 *     firmware sends us (delta x / 5) and (delta y / 5)
		 * ID: finger id
		 * DX: delta x (two's complement)
		 * XY: delta y (two's complement)
		 * byte 0 ~ 2 for one finger
		 * byte 3 ~ 5 for another finger
		 */
		mask = sc->elanaction.mask;
		nfingers = bitcount(mask);

		scale = (pb->ipacket[0] & 0x10) ? 5 : 1;
		for (i = 0; i <= 3; i += 3) {
			id = ((pb->ipacket[i] & 0xe0) >> 5) - 1;
			if (id < 0 || id >= ELANTECH_MAX_FINGERS)
				continue;

			if (PSM_FINGER_IS_SET(sc->elanaction.fingers[id])) {
				f[id] = sc->elanaction.fingers[id];
				f[id].x += imax(-f[id].x,
				    (signed char)pb->ipacket[i+1] * scale);
				f[id].y += imax(-f[id].y,
				    (signed char)pb->ipacket[i+2] * scale);
			} else {
				VLOG(3, (LOG_DEBUG, "elantech: "
				    "HW v4 motion packet skipped\n"));
			}
		}

		break;

	case ELANTECH_PKT_TRACKPOINT:
		/*               7   6   5   4   3   2   1   0 (LSB)
		 * -------------------------------------------
		 * ipacket[0]:   0   0  SX  SY   0   M   R   L
		 * ipacket[1]: ~SX   0   0   0   0   0   0   0
		 * ipacket[2]: ~SY   0   0   0   0   0   0   0
		 * ipacket[3]:   0   0 ~SY ~SX   0   1   1   0
		 * ipacket[4]:  X7  X6  X5  X4  X3  X2  X1  X0
		 * ipacket[5]:  Y7  Y6  Y5  Y4  Y3  Y2  Y1  Y0
		 * -------------------------------------------
		 * X and Y are written in two's complement spread
		 * over 9 bits with SX/SY the relative top bit and
		 * X7..X0 and Y7..Y0 the lower bits.
		 */
		*x = (pb->ipacket[0] & 0x20) ?
		    pb->ipacket[4] - 256 : pb->ipacket[4];
		*y = (pb->ipacket[0] & 0x10) ?
		    pb->ipacket[5] - 256 : pb->ipacket[5];

		trackpoint_button =
		    ((pb->ipacket[0] & 0x01) ? MOUSE_BUTTON1DOWN : 0) |
		    ((pb->ipacket[0] & 0x02) ? MOUSE_BUTTON3DOWN : 0) |
		    ((pb->ipacket[0] & 0x04) ? MOUSE_BUTTON2DOWN : 0);

		ms->button = touchpad_button | trackpoint_button;
		return (0);

	case ELANTECH_PKT_NOP:
		return (0);

	default:
		return (-1);
	}

	for (id = 0; id < ELANTECH_MAX_FINGERS; id++)
		if (PSM_FINGER_IS_SET(f[id]))
			VLOG(2, (LOG_DEBUG, "elantech: "
			    "finger %d: down [%d, %d], %d, %d, %d\n", id + 1,
			    f[id].x, f[id].y, f[id].p, f[id].w, f[id].flags));

	/* Touchpad button presses */
	if (sc->elanhw.isclickpad) {
		touchpad_button =
		    ((pb->ipacket[0] & 0x03) ? MOUSE_BUTTON1DOWN : 0);
	} else {
		touchpad_button =
		    ((pb->ipacket[0] & 0x01) ? MOUSE_BUTTON1DOWN : 0) |
		    ((pb->ipacket[0] & 0x02) ? MOUSE_BUTTON3DOWN : 0);
	}

	ms->button = touchpad_button | trackpoint_button;

	/* Palm detection doesn't terminate the current action. */
	if (!psmpalmdetect(sc, &f[0], nfingers)) {
		/* Send finger 1 position to gesture processor */
		if (PSM_FINGER_IS_SET(f[0]) || PSM_FINGER_IS_SET(f[1]) ||
		    nfingers == 0)
			psmgestures(sc, &f[0], imin(nfingers, 3), ms);
		/* Send fingers positions to movement smoothers */
		for (id = 0; id < PSM_FINGERS; id++)
			if (PSM_FINGER_IS_SET(f[id]) || !(mask & (1 << id)))
				psmsmoother(sc, &f[id], id, ms, x, y);
	} else {
		VLOG(2, (LOG_DEBUG, "elantech: palm detected! (%d)\n",
		    f[0].w));
	}

	/* Store current finger positions in action context */
	for (id = 0; id < ELANTECH_MAX_FINGERS; id++) {
		if (PSM_FINGER_IS_SET(f[id]))
			sc->elanaction.fingers[id] = f[id];
		if ((sc->elanaction.mask & (1 << id)) && !(mask & (1 << id)))
			PSM_FINGER_RESET(sc->elanaction.fingers[id]);
	}
	sc->elanaction.mask = mask;

	/* Use the extra buttons as a scrollwheel */
	if (ms->button & MOUSE_BUTTON4DOWN)
		*z = -1;
	else if (ms->button & MOUSE_BUTTON5DOWN)
		*z = 1;
	else if (ms->button & MOUSE_BUTTON6DOWN)
	} else if (ms->button & MOUSE_BUTTON6DOWN) {
		*z = -2;
	else if (ms->button & MOUSE_BUTTON7DOWN)
	} else if (ms->button & MOUSE_BUTTON7DOWN) {
		*z = 2;
	else
	} else
		*z = 0;
	ms->button &= ~(MOUSE_BUTTON4DOWN | MOUSE_BUTTON5DOWN |
	    MOUSE_BUTTON6DOWN | MOUSE_BUTTON7DOWN);

	return (0);
}

}

static void
psmsoftintridle(void *arg)
{
	struct psm_softc *sc = arg;
	packetbuf_t *pb;

	/* Invoke soft handler only when pqueue is empty. Otherwise it will be
	 * invoked from psmintr soon with pqueue filled with real data */
	if (sc->pqueue_start == sc->pqueue_end &&
	    sc->idlepacket.inputbytes > 0) {
		/* Grow circular queue backwards to avoid race with psmintr */
		if (--sc->pqueue_start < 0)
			sc->pqueue_start = PSM_PACKETQUEUE - 1;

		pb = &sc->pqueue[sc->pqueue_start];
		memcpy(pb, &sc->idlepacket, sizeof(packetbuf_t));
		VLOG(4, (LOG_DEBUG,
		    "psmsoftintridle: %02x %02x %02x %02x %02x %02x\n",
		    pb->ipacket[0], pb->ipacket[1], pb->ipacket[2],
		    pb->ipacket[3], pb->ipacket[4], pb->ipacket[5]));

		psmsoftintr(arg);
	}
}

static void
psmsoftintr(void *arg)
{
	/*

		if (sc->config & PSM_CONFIG_FORCETAP)
			ms.button |= ((c & MOUSE_PS2_TAP)) ?
			    0 : MOUSE_BUTTON4DOWN;
		timevalclear(&sc->idletimeout);
		sc->idlepacket.inputbytes = 0;

		switch (sc->hw.model) {


				goto next;
			break;

		case MOUSE_MODEL_ELANTECH:
			if (proc_elantech(sc, pb, &ms, &x, &y, &z) != 0)
				goto next;
			break;

		case MOUSE_MODEL_TRACKPOINT:
		case MOUSE_MODEL_GENERIC:
		default:

		}
	}

	/* Store last packet for reinjection if it has not been set already */
	if (timevalisset(&sc->idletimeout) && sc->idlepacket.inputbytes == 0)
		sc->idlepacket = *pb;

	ms.dx = x;
	ms.dy = y;
	ms.dz = z;

		pgsigio(&sc->async, SIGIO, 0);
	}
	sc->state &= ~PSM_SOFTARMED;

	/* schedule injection of predefined packet after idletimeout
	 * if no data packets have been received from psmintr */
	if (timevalisset(&sc->idletimeout)) {
		sc->state |= PSM_SOFTARMED;
		callout_reset(&sc->softcallout, tvtohz(&sc->idletimeout),
		    psmsoftintridle, sc);
		VLOG(2, (LOG_DEBUG, "softintr: callout set: %d ticks\n",
		    tvtohz(&sc->idletimeout)));
	}
	splx(s);
}


static int
synaptics_sysctl(SYSCTL_HANDLER_ARGS)
{
	struct psm_softc *sc;
	int error, arg;

	if (oidp->oid_arg1 == NULL || oidp->oid_arg2 < 0 ||
	    oidp->oid_arg2 > SYNAPTICS_SYSCTL_SOFTBUTTON3_X)
		return (EINVAL);

	sc = oidp->oid_arg1;

	/* Read the current value. */
	arg = *(int *)((char *)sc + oidp->oid_arg2);
	error = sysctl_handle_int(oidp, &arg, 0, req);

	/* Sanity check. */

			return (EINVAL);
		break;
	case SYNAPTICS_SYSCTL_MARGIN_TOP:
	case SYNAPTICS_SYSCTL_MARGIN_RIGHT:
	case SYNAPTICS_SYSCTL_MARGIN_BOTTOM:
	case SYNAPTICS_SYSCTL_MARGIN_LEFT:
	case SYNAPTICS_SYSCTL_NA_TOP:
	case SYNAPTICS_SYSCTL_NA_RIGHT:
	case SYNAPTICS_SYSCTL_NA_BOTTOM:
		if (arg < 0 || arg > sc->synhw.maximumYCoord)
			return (EINVAL);
		break;
	case SYNAPTICS_SYSCTL_SOFTBUTTON2_X:
	case SYNAPTICS_SYSCTL_SOFTBUTTON3_X:
		/* Softbuttons is clickpad only feature */
		if (!sc->synhw.capClickPad && arg != 0)
			return (EINVAL);
		/* FALLTHROUGH */
	case SYNAPTICS_SYSCTL_MARGIN_RIGHT:
	case SYNAPTICS_SYSCTL_MARGIN_LEFT:
	case SYNAPTICS_SYSCTL_NA_RIGHT:
	case SYNAPTICS_SYSCTL_NA_LEFT:
		if (arg < 0 || arg > sc->synhw.maximumXCoord)
			return (EINVAL);
		break;
	case SYNAPTICS_SYSCTL_WINDOW_MIN:

			return (EINVAL);
		break;
	case SYNAPTICS_SYSCTL_VSCROLL_HOR_AREA:
		if (arg < -sc->synhw.maximumXCoord ||
		    arg > sc->synhw.maximumXCoord)
			return (EINVAL);
		break;
	case SYNAPTICS_SYSCTL_SOFTBUTTONS_Y:
		/* Softbuttons is clickpad only feature */
		if (!sc->synhw.capClickPad && arg != 0)
			return (EINVAL);
		/* FALLTHROUGH */
	case SYNAPTICS_SYSCTL_VSCROLL_VER_AREA:
		if (arg < -sc->synhw.maximumYCoord ||
		    arg > sc->synhw.maximumYCoord)
			return (EINVAL);
		break;
        case SYNAPTICS_SYSCTL_TOUCHPAD_OFF:

	}

	/* Update. */
	*(int *)((char *)sc + oidp->oid_arg2) = arg;

	return (error);
}

static void
synaptics_sysctl_create_softbuttons_tree(struct psm_softc *sc)
{
	/*
	 * Set predefined sizes for softbuttons.
	 * Values are taken to match HP Pavilion dv6 clickpad drawings
	 * with thin middle softbutton placed on separator
	 */

	/* hw.psm.synaptics.softbuttons_y */
	sc->syninfo.softbuttons_y = 1700;
	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "softbuttons_y", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_SOFTBUTTONS_Y,
	    synaptics_sysctl, "I",
	    "Vertical size of softbuttons area");

	/* hw.psm.synaptics.softbutton2_x */
	sc->syninfo.softbutton2_x = 3100;
	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "softbutton2_x", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_SOFTBUTTON2_X,
	    synaptics_sysctl, "I",
	    "Horisontal position of 2-nd softbutton left edge (0-disable)");

	/* hw.psm.synaptics.softbutton3_x */
	sc->syninfo.softbutton3_x = 3900;
	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "softbutton3_x", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_SOFTBUTTON3_X,
	    synaptics_sysctl, "I",
	    "Horisontal position of 3-rd softbutton left edge (0-disable)");
}

static void
synaptics_sysctl_create_tree(struct psm_softc *sc, const char *name,
    const char *descr)
{

	if (sc->syninfo.sysctl_tree != NULL)

	/* Attach extra synaptics sysctl nodes under hw.psm.synaptics */
	sysctl_ctx_init(&sc->syninfo.sysctl_ctx);
	sc->syninfo.sysctl_tree = SYSCTL_ADD_NODE(&sc->syninfo.sysctl_ctx,
	    SYSCTL_STATIC_CHILDREN(_hw_psm), OID_AUTO, name, CTLFLAG_RD,
	    0, descr);

	/* hw.psm.synaptics.directional_scrolls. */
	sc->syninfo.directional_scrolls = 0;

	    "Enable hardware scrolling pad (if non-zero) or register it as "
	    "extended buttons (if 0)");

	/* hw.psm.synaptics.max_x. */
	sc->syninfo.max_x = 6143;
	SYSCTL_ADD_INT(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "max_x", CTLFLAG_RD|CTLFLAG_ANYBODY,
	    &sc->syninfo.max_x, 0,
	    "Horizontal reporting range");

	/* hw.psm.synaptics.max_y. */
	sc->syninfo.max_y = 6143;
	SYSCTL_ADD_INT(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "max_y", CTLFLAG_RD|CTLFLAG_ANYBODY,
	    &sc->syninfo.max_y, 0,
	    "Vertical reporting range");

	/*
	 * Turn off two finger scroll if we have a
	 * physical area reserved for scrolling or when

	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "min_pressure", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_MIN_PRESSURE,
	    synaptics_sysctl, "I",
	    "Minimum pressure required to start an action");


	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "max_pressure", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_MAX_PRESSURE,
	    synaptics_sysctl, "I",
	    "Maximum pressure to detect palm");


	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "max_width", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_MAX_WIDTH,
	    synaptics_sysctl, "I",
	    "Maximum finger width to detect palm");


	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "margin_top", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_MARGIN_TOP,
	    synaptics_sysctl, "I",
	    "Top margin");


	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "margin_right", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_MARGIN_RIGHT,
	    synaptics_sysctl, "I",
	    "Right margin");


	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "margin_bottom", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_MARGIN_BOTTOM,
	    synaptics_sysctl, "I",
	    "Bottom margin");


	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "margin_left", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_MARGIN_LEFT,
	    synaptics_sysctl, "I",
	    "Left margin");


	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "na_top", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_NA_TOP,
	    synaptics_sysctl, "I",
	    "Top noisy area, where weight_previous_na is used instead "
	    "of weight_previous");

	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "na_right", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_NA_RIGHT,
	    synaptics_sysctl, "I",
	    "Right noisy area, where weight_previous_na is used instead "
	    "of weight_previous");

	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "na_bottom", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_NA_BOTTOM,
	    synaptics_sysctl, "I",
	    "Bottom noisy area, where weight_previous_na is used instead "
	    "of weight_previous");

	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "na_left", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_NA_LEFT,
	    synaptics_sysctl, "I",
	    "Left noisy area, where weight_previous_na is used instead "
	    "of weight_previous");

	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "window_min", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_WINDOW_MIN,
	    synaptics_sysctl, "I",
	    "Minimum window size to start an action");


	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "window_max", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_WINDOW_MAX,
	    synaptics_sysctl, "I",
	    "Maximum window size");


	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "multiplicator", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_MULTIPLICATOR,
	    synaptics_sysctl, "I",
	    "Multiplicator to increase precision in averages and divisions");


	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "weight_current", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_WEIGHT_CURRENT,
	    synaptics_sysctl, "I",
	    "Weight of the current movement in the new average");


	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "weight_previous", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_WEIGHT_PREVIOUS,
	    synaptics_sysctl, "I",
	    "Weight of the previous average");


	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "weight_previous_na", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_WEIGHT_PREVIOUS_NA,
	    SYNAPTICS_SYSCTL_WEIGHT_PREVIOUS_NA,
	    synaptics_sysctl, "I",
	    "Weight of the previous average (inside the noisy area)");


	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "weight_len_squared", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_WEIGHT_LEN_SQUARED,
	    SYNAPTICS_SYSCTL_WEIGHT_LEN_SQUARED,
	    synaptics_sysctl, "I",
	    "Length (squared) of segments where weight_previous "
	    "starts to decrease");

	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "div_min", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_DIV_MIN,
	    synaptics_sysctl, "I",
	    "Divisor for fast movements");


	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "div_max", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_DIV_MAX,
	    synaptics_sysctl, "I",
	    "Divisor for slow movements");


	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "div_max_na", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_DIV_MAX_NA,
	    synaptics_sysctl, "I",
	    "Divisor with slow movements (inside the noisy area)");


	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "div_len", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_DIV_LEN,
	    synaptics_sysctl, "I",
	    "Length of segments where div_max starts to decrease");


	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "tap_max_delta", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_TAP_MAX_DELTA,
	    synaptics_sysctl, "I",
	    "Length of segments above which a tap is ignored");


	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "tap_min_queue", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_TAP_MIN_QUEUE,
	    synaptics_sysctl, "I",
	    "Number of packets required to consider a tap");

	/* hw.psm.synaptics.taphold_timeout. */
	sc->gesture.in_taphold = 0;
	sc->syninfo.taphold_timeout = tap_timeout;
	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "taphold_timeout", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_TAPHOLD_TIMEOUT,
	    synaptics_sysctl, "I",
	    "Maximum elapsed time between two taps to consider a tap-hold "
	    "action");

	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "vscroll_hor_area", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_VSCROLL_HOR_AREA,
	    synaptics_sysctl, "I",
	    "Area reserved for horizontal virtual scrolling");

	/* hw.psm.synaptics.vscroll_ver_area. */
	sc->syninfo.vscroll_ver_area = -400 - sc->syninfo.margin_right;
	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "vscroll_ver_area", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_VSCROLL_VER_AREA,
	    synaptics_sysctl, "I",
	    "Area reserved for vertical virtual scrolling");


	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "vscroll_min_delta", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_VSCROLL_MIN_DELTA,
	    SYNAPTICS_SYSCTL_VSCROLL_MIN_DELTA,
	    synaptics_sysctl, "I",
	    "Minimum movement to consider virtual scrolling");


	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "vscroll_div_min", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_VSCROLL_DIV_MIN,
	    synaptics_sysctl, "I",
	    "Divisor for fast scrolling");


	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "vscroll_div_max", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_VSCROLL_DIV_MAX,
	    synaptics_sysctl, "I",
	    "Divisor for slow scrolling");


	SYSCTL_ADD_PROC(&sc->syninfo.sysctl_ctx,
	    SYSCTL_CHILDREN(sc->syninfo.sysctl_tree), OID_AUTO,
	    "touchpad_off", CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_ANYBODY,
	    sc, SYNAPTICS_SYSCTL_TOUCHPAD_OFF,
	    synaptics_sysctl, "I",
	    "Turn off touchpad");

	sc->syninfo.softbuttons_y = 0;
	sc->syninfo.softbutton2_x = 0;
	sc->syninfo.softbutton3_x = 0;

	/* skip softbuttons sysctl on not clickpads */
	if (sc->synhw.capClickPad)
		synaptics_sysctl_create_softbuttons_tree(sc);
}

static int
synaptics_preferred_mode(struct psm_softc *sc) {
	int mode_byte;

	mode_byte = 0xc4;

	/* request wmode where available */
	if (sc->synhw.capExtended)
		mode_byte |= 1;

	/*
	 * Disable gesture processing when native packets are requested. This
	 * enables sending of encapsulated "extended W mode" packets.
	 */
	if (sc->mode.level == PSM_LEVEL_NATIVE)
		mode_byte |= (1 << 2);

	return mode_byte;
}


	 * Enable advanced gestures mode if supported and we are not entering
	 * passthrough mode.
	 */
	if ((sc->synhw.capAdvancedGestures || sc->synhw.capReportsV) &&
	    !(mode_byte & (1 << 5))) {
		mouse_ext_command(sc->kbdc, 3);
		set_mouse_sampling_rate(sc->kbdc, 0xc8);
	}

						     ((status[1] & 0x0f) << 1);
				synhw.maximumYCoord = (status[2] << 5) |
						     ((status[1] & 0xf0) >> 3);
			} else {
				/*
				 * Typical bezel limits. Taken from 'Synaptics
				 * PS/2 * TouchPad Interfacing Guide' p.3.2.3.
				 */
				synhw.maximumXCoord = 5472;
				synhw.maximumYCoord = 4448;
			}

			if (synhw.capReportsMin) {
				if (!set_mouse_scaling(kbdc, 1))
					return (FALSE);

						     ((status[1] & 0x0f) << 1);
				synhw.minimumYCoord = (status[2] << 5) |
						     ((status[1] & 0xf0) >> 3);
			} else {
				/*
				 * Typical bezel limits. Taken from 'Synaptics
				 * PS/2 * TouchPad Interfacing Guide' p.3.2.3.
				 */
				synhw.minimumXCoord = 1472;
				synhw.minimumYCoord = 1408;
			}

			if (verbose >= 2) {


	if (arg == PROBE) {
		/* Create sysctl tree. */
		synaptics_sysctl_create_tree(sc, "synaptics",
		    "Synaptics TouchPad");
		sc->hw.buttons = buttons;
	}


	return (TRUE);				/* PS/2 absolute mode */
}

/* Elantech Touchpad */
static int
elantech_read_1(KBDC kbdc, int hwversion, int reg, int *val)
{
	int res, readcmd, retidx;
	int resp[3];

	readcmd = hwversion == 2 ? ELANTECH_REG_READ : ELANTECH_REG_RDWR;
	retidx = hwversion == 4 ? 1 : 0;

	res = send_aux_command(kbdc, ELANTECH_CUSTOM_CMD) != PSM_ACK;
	res |= send_aux_command(kbdc, readcmd) != PSM_ACK;
	res |= send_aux_command(kbdc, ELANTECH_CUSTOM_CMD) != PSM_ACK;
	res |= send_aux_command(kbdc, reg) != PSM_ACK;
	res |= get_mouse_status(kbdc, resp, 0, 3) != 3;

	if (res == 0)
		*val = resp[retidx];

	return (res);
}

static int
elantech_write_1(KBDC kbdc, int hwversion, int reg, int val)
{
	int res, writecmd;

	writecmd = hwversion == 2 ? ELANTECH_REG_WRITE : ELANTECH_REG_RDWR;

	res = send_aux_command(kbdc, ELANTECH_CUSTOM_CMD) != PSM_ACK;
	res |= send_aux_command(kbdc, writecmd) != PSM_ACK;
	res |= send_aux_command(kbdc, ELANTECH_CUSTOM_CMD) != PSM_ACK;
	res |= send_aux_command(kbdc, reg) != PSM_ACK;
	if (hwversion == 4) {
		res |= send_aux_command(kbdc, ELANTECH_CUSTOM_CMD) != PSM_ACK;
		res |= send_aux_command(kbdc, writecmd) != PSM_ACK;
	}
	res |= send_aux_command(kbdc, ELANTECH_CUSTOM_CMD) != PSM_ACK;
	res |= send_aux_command(kbdc, val) != PSM_ACK;
	res |= set_mouse_scaling(kbdc, 1) == 0;

	return (res);
}

static int
elantech_cmd(KBDC kbdc, int hwversion, int cmd, int *resp)
{
	int res;

	if (hwversion == 2) {
		res = set_mouse_scaling(kbdc, 1) == 0;
		res |= mouse_ext_command(kbdc, cmd) == 0;
	} else {
		res = send_aux_command(kbdc, ELANTECH_CUSTOM_CMD) != PSM_ACK;
		res |= send_aux_command(kbdc, cmd) != PSM_ACK;
	}
	res |= get_mouse_status(kbdc, resp, 0, 3) != 3;

	return (res);
}

static int
elantech_init(KBDC kbdc, elantechhw_t *elanhw)
{
	int i, val, res, hwversion, reg10;

	/* set absolute mode */
	hwversion = elanhw->hwversion;
	reg10 = -1;
	switch (hwversion) {
	case 2:
		reg10 = elanhw->fwversion == 0x020030 ? 0x54 : 0xc4;
		res = elantech_write_1(kbdc, hwversion, 0x10, reg10);
		if (res)
			break;
		res = elantech_write_1(kbdc, hwversion, 0x11, 0x8A);
		break;
	case 3:
		reg10 = 0x0b;
		res = elantech_write_1(kbdc, hwversion, 0x10, reg10);
		break;
	case 4:
		res = elantech_write_1(kbdc, hwversion, 0x07, 0x01);
		break;
	default:
		res = 1;
	}

	/* Read back reg 0x10 to ensure hardware is ready. */
	if (res == 0 && reg10 >= 0) {
		for (i = 0; i < 5; i++) {
			if (elantech_read_1(kbdc, hwversion, 0x10, &val) == 0)
				break;
			DELAY(2000);
		}
		if (i == 5)
			res = 1;
	}

	if (res)
		printf("couldn't set absolute mode\n");

	return (res);
}

static void
elantech_init_synaptics(struct psm_softc *sc)
{

	/* Set capabilites required by movement smother */
	sc->synhw.infoMajor = sc->elanhw.hwversion;
	sc->synhw.infoMinor = sc->elanhw.fwversion;
	sc->synhw.infoXupmm = sc->elanhw.dpmmx;
	sc->synhw.infoYupmm = sc->elanhw.dpmmy;
	sc->synhw.verticalScroll = 0;
	sc->synhw.nExtendedQueries = 4;
	sc->synhw.capExtended = 1;
	sc->synhw.capPassthrough = sc->elanhw.hastrackpad;
	sc->synhw.capClickPad = sc->elanhw.isclickpad;
	sc->synhw.capMultiFinger = 1;
	sc->synhw.capAdvancedGestures = 1;
	sc->synhw.capPalmDetect = 1;
	sc->synhw.capPen = 0;
	sc->synhw.capReportsMax = 1;
	sc->synhw.maximumXCoord = sc->elanhw.sizex;
	sc->synhw.maximumYCoord = sc->elanhw.sizey;
	sc->synhw.capReportsMin = 1;
	sc->synhw.minimumXCoord = 0;
	sc->synhw.minimumYCoord = 0;

	if (sc->syninfo.sysctl_tree == NULL) {
		synaptics_sysctl_create_tree(sc, "elantech",
		    "Elantech Touchpad");

		/*
		 * Adjust synaptic smoother tunables
		 * 1. Disable finger detection pressure threshold. Unlike
		 *    synaptics we assume the finger is acting when packet with
		 *    its X&Y arrives not when pressure exceedes some threshold
		 * 2. Disable unrelated features like margins and noisy areas
		 * 3. Disable virtual scroll areas as 2nd finger is preferable
		 * 4. For clickpads set bottom quarter as 42% - 16% - 42% sized
		 *    softbuttons
		 * 5. Scale down divisors and movement lengths by a factor of 3
		 *    where 3 is Synaptics to Elantech (~2200/800) dpi ratio
		 */

		/* Set reporting range to be equal touchpad size */
		sc->syninfo.max_x = sc->elanhw.sizex;
		sc->syninfo.max_y = sc->elanhw.sizey;

		/* Disable finger detection pressure threshold */
		sc->syninfo.min_pressure = 1;

		/* Use full area of touchpad */
		sc->syninfo.margin_top = 0;
		sc->syninfo.margin_right = 0;
		sc->syninfo.margin_bottom = 0;
		sc->syninfo.margin_left = 0;

		/* Disable noisy area */
		sc->syninfo.na_top = 0;
		sc->syninfo.na_right = 0;
		sc->syninfo.na_bottom = 0;
		sc->syninfo.na_left = 0;

		/* Tune divisors and movement lengths */
		sc->syninfo.weight_len_squared = 200;
		sc->syninfo.div_min = 3;
		sc->syninfo.div_max = 6;
		sc->syninfo.div_max_na = 10;
		sc->syninfo.div_len = 30;
		sc->syninfo.tap_max_delta = 25;

		/* Disable virtual scrolling areas and tune its divisors */
		sc->syninfo.vscroll_hor_area = 0;
		sc->syninfo.vscroll_ver_area = 0;
		sc->syninfo.vscroll_min_delta = 15;
		sc->syninfo.vscroll_div_min = 30;
		sc->syninfo.vscroll_div_max = 50;

		/* Set bottom quarter as 42% - 16% - 42% sized softbuttons */
		if (sc->elanhw.isclickpad) {
			sc->syninfo.softbuttons_y = sc->elanhw.sizey / 4;
			sc->syninfo.softbutton2_x = sc->elanhw.sizex * 11 / 25;
			sc->syninfo.softbutton3_x = sc->elanhw.sizex * 14 / 25;
		}
	}

	return;
}

static int
enable_elantech(struct psm_softc *sc, enum probearg arg)
{
	static const int ic2hw[] =
	/*IC: 0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f */
	    { 0, 0, 2, 0, 2, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0 };
	elantechhw_t elanhw;
	int icversion, hwversion, dptracex, dptracey, id, resp[3], dpix, dpiy;
	KBDC kbdc = sc->kbdc;

	VLOG(3, (LOG_DEBUG, "elantech: BEGIN init\n"));

	set_mouse_scaling(kbdc, 1);
	set_mouse_scaling(kbdc, 1);
	set_mouse_scaling(kbdc, 1);
	if (get_mouse_status(kbdc, resp, 0, 3) != 3)
		return (FALSE);

	if (!ELANTECH_MAGIC(resp))
		return (FALSE);

	/* Identify the Touchpad version. */
	if (elantech_cmd(kbdc, 2, ELANTECH_FW_VERSION, resp))
		return (FALSE);

	bzero(&elanhw, sizeof(elanhw));

	elanhw.fwversion = (resp[0] << 16) | (resp[1] << 8) | resp[2];
	icversion = resp[0] & 0x0f;
	hwversion = ic2hw[icversion];

	if (verbose >= 2)
		printf("Elantech touchpad hardware v.%d firmware v.0x%06x\n",
		    hwversion, elanhw.fwversion);

	if (ELANTECH_HW_IS_V1(elanhw.fwversion)) {
		printf ("  Unsupported touchpad hardware (v1)\n");
		return (FALSE);
	}
	if (hwversion == 0) {
		printf ("  Unknown touchpad hardware (firmware v.0x%06x)\n",
		    elanhw.fwversion);
		return (FALSE);
	}

	/* Get the Touchpad model information. */
	elanhw.hwversion = hwversion;
	elanhw.issemimt = hwversion == 2;
	elanhw.isclickpad = (resp[1] & 0x10) != 0;
	elanhw.hascrc = (resp[1] & 0x40) != 0;
	elanhw.haspressure = elanhw.fwversion >= 0x020800;

	/* Read the capability bits. */
	if (elantech_cmd(kbdc, hwversion, ELANTECH_CAPABILITIES, resp) != 0) {
		printf("  Failed to read capability bits\n");
		return (FALSE);
	}

	elanhw.ntracesx = resp[1] - 1;
	elanhw.ntracesy = resp[2] - 1;
	elanhw.hastrackpad = (resp[0] & 0x80) != 0;

	/* Get the touchpad resolution */
	switch (hwversion) {
	case 4:
		if (elantech_cmd(kbdc, hwversion, ELANTECH_RESOLUTION, resp)
		    == 0) {
			dpix = (resp[1] & 0x0f) * 10 + 790;
			dpiy = ((resp[1] & 0xf0) >> 4) * 10 + 790;
			elanhw.dpmmx = (dpix * 10 + 5) / 254;
			elanhw.dpmmy = (dpiy * 10 + 5) / 254;
			break;
		}
		/* FALLTHROUGH */
	case 2:
	case 3:
		elanhw.dpmmx = elanhw.dpmmy = 32; /* 800 dpi */
		break;
	}

	if (!elantech_support)
		return (FALSE);

	if (elantech_init(kbdc, &elanhw)) {
		printf("couldn't initialize elantech touchpad\n");
		return (FALSE);
	}

	/*
	 * Get the touchpad reporting range.
	 * On HW v.3 touchpads it should be done after switching hardware
	 * to real resolution mode (by setting bit 3 of reg10)
	 */
	if (elantech_cmd(kbdc, hwversion, ELANTECH_FW_ID, resp) != 0) {
		printf("  Failed to read touchpad size\n");
		elanhw.sizex = 10000; /* Arbitrary high values to     */
		elanhw.sizey = 10000; /* prevent clipping in smoother */
	} else if (hwversion == 2) {
		dptracex = dptracey = 64;
		if ((elanhw.fwversion >> 16) == 0x14 && (resp[1] & 0x10) &&
		    !elantech_cmd(kbdc, hwversion, ELANTECH_SAMPLE, resp)) {
			dptracex = resp[1] / 2;
			dptracey = resp[2] / 2;
		}
		elanhw.sizex = (elanhw.ntracesx - 1) * dptracex;
		elanhw.sizey = (elanhw.ntracesy - 1) * dptracey;
	} else {
		elanhw.sizex = (resp[0] & 0x0f) << 8 | resp[1];
		elanhw.sizey = (resp[0] & 0xf0) << 4 | resp[2];
	}

	if (verbose >= 2) {
		printf("  Model information:\n");
		printf("   MaxX:     %d\n", elanhw.sizex);
		printf("   MaxY:     %d\n", elanhw.sizey);
		printf("   DpmmX:    %d\n", elanhw.dpmmx);
		printf("   DpmmY:    %d\n", elanhw.dpmmy);
		printf("   TracesX:  %d\n", elanhw.ntracesx);
		printf("   TracesY:  %d\n", elanhw.ntracesy);
		printf("   SemiMT:   %d\n", elanhw.issemimt);
		printf("   Clickpad: %d\n", elanhw.isclickpad);
		printf("   Trackpad: %d\n", elanhw.hastrackpad);
		printf("   CRC:      %d\n", elanhw.hascrc);
		printf("   Pressure: %d\n", elanhw.haspressure);
	}

	VLOG(3, (LOG_DEBUG, "elantech: END init\n"));

	if (arg == PROBE) {
		sc->elanhw = elanhw;
		sc->hw.buttons = 3;

		/* Initialize synaptics movement smoother */
		elantech_init_synaptics(sc);

		for (id = 0; id < ELANTECH_MAX_FINGERS; id++)
			PSM_FINGER_RESET(sc->elanaction.fingers[id]);
	}

	return (TRUE);
}

/*
 * Return true if 'now' is earlier than (start + (secs.usecs)).
 * Now may be NULL and the function will fetch the current time from

Lines 170-175 typedef struct synapticshw { Link Here

(-)b/sys/sys/mouse.h (+4 lines)
170	#define MOUSE_MODEL_4DPLUS 12	170	#define MOUSE_MODEL_4DPLUS 12
171	#define MOUSE_MODEL_SYNAPTICS 13	171	#define MOUSE_MODEL_SYNAPTICS 13
172	#define MOUSE_MODEL_TRACKPOINT 14	172	#define MOUSE_MODEL_TRACKPOINT 14
		173	#define MOUSE_MODEL_ELANTECH 15
173		174
174	typedef struct mousemode {	175	typedef struct mousemode {
175	int protocol; /* MOUSE_PROTO_XXX */	176	int protocol; /* MOUSE_PROTO_XXX */
Lines 240-245 typedef struct mousevar { Link Here
240	/* Synaptics Touchpad */	241	/* Synaptics Touchpad */
241	#define MOUSE_SYNAPTICS_PACKETSIZE 6 /* '3' works better */	242	#define MOUSE_SYNAPTICS_PACKETSIZE 6 /* '3' works better */
242		243
		244	/* Elantech Touchpad */
		245	#define MOUSE_ELANTECH_PACKETSIZE 6
		246
243	/* Microsoft Serial mouse data packet */	247	/* Microsoft Serial mouse data packet */
244	#define MOUSE_MSS_PACKETSIZE 3	248	#define MOUSE_MSS_PACKETSIZE 3
245	#define MOUSE_MSS_SYNCMASK 0x40	249	#define MOUSE_MSS_SYNCMASK 0x40

Lines 246-251 static symtab_t rmodels[] = { Link Here

(-)b/usr.sbin/moused/moused.c (+1 lines)
246	{ "4D+ Mouse", MOUSE_MODEL_4DPLUS, 0 },	246	{ "4D+ Mouse", MOUSE_MODEL_4DPLUS, 0 },
247	{ "Synaptics Touchpad", MOUSE_MODEL_SYNAPTICS, 0 },	247	{ "Synaptics Touchpad", MOUSE_MODEL_SYNAPTICS, 0 },
248	{ "TrackPoint", MOUSE_MODEL_TRACKPOINT, 0 },	248	{ "TrackPoint", MOUSE_MODEL_TRACKPOINT, 0 },
		249	{ "Elantech Touchpad", MOUSE_MODEL_ELANTECH, 0 },
249	{ "generic", MOUSE_MODEL_GENERIC, 0 },	250	{ "generic", MOUSE_MODEL_GENERIC, 0 },
250	{ NULL, MOUSE_MODEL_UNKNOWN, 0 },	251	{ NULL, MOUSE_MODEL_UNKNOWN, 0 },
251	};	252	};

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