report button clicks when tapping a trackpad
Tested on a PB3400c and an iBook G4
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macallan
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@ -1,4 +1,4 @@
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/* $NetBSD: ams.c,v 1.18 2005/12/11 12:18:03 christos Exp $ */
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/* $NetBSD: ams.c,v 1.19 2006/10/15 21:15:21 macallan Exp $ */
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/*
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* Copyright (C) 1998 Colin Wood
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@ -31,7 +31,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ams.c,v 1.18 2005/12/11 12:18:03 christos Exp $");
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__KERNEL_RCSID(0, "$NetBSD: ams.c,v 1.19 2006/10/15 21:15:21 macallan Exp $");
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#include <sys/param.h>
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#include <sys/device.h>
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@ -60,6 +60,7 @@ static int amsmatch __P((struct device *, struct cfdata *, void *));
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static void amsattach __P((struct device *, struct device *, void *));
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static void ems_init __P((struct ams_softc *));
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static void ms_processevent __P((adb_event_t *event, struct ams_softc *));
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static void init_trackpad(struct ams_softc *);
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/* Driver definition. */
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CFATTACH_DECL(ams, sizeof(struct ams_softc),
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@ -69,6 +70,14 @@ int ams_enable __P((void *));
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int ams_ioctl __P((void *, u_long, caddr_t, int, struct lwp *));
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void ams_disable __P((void *));
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/*
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* handle tapping the trackpad
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* different pads report different button counts and use slightly different
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* protocols
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*/
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static void ams_mangle_2(struct ams_softc *, int);
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static void ams_mangle_4(struct ams_softc *, int);
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const struct wsmouse_accessops ams_accessops = {
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ams_enable,
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ams_ioctl,
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@ -168,6 +177,7 @@ amsattach(parent, self, aux)
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break;
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case MSCLASS_TRACKPAD:
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printf("trackpad");
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init_trackpad(sc);
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break;
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default:
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printf("unknown device");
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@ -307,6 +317,11 @@ ems_init(sc)
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#endif
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} else if (buffer[0] == 8) {
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/* we have a true EMP device */
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#ifdef ADB_PRINT_EMP
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printf("EMP: %02x %02x %02x %02x %02x %02x %02x %02x\n",
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buffer[1], buffer[2], buffer[3], buffer[4],
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buffer[5], buffer[6], buffer[7], buffer[8]);
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#endif
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sc->sc_class = buffer[7];
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sc->sc_buttons = buffer[8];
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sc->sc_res = (int)*(short *)&buffer[5];
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@ -461,7 +476,7 @@ ms_processevent(event, sc)
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struct ams_softc *sc;
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{
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adb_event_t new_event;
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int i, button_bit, max_byte, mask, buttons;
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int i, button_bit, max_byte, mask, buttons, dx, dy;
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new_event = *event;
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buttons = 0;
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@ -488,7 +503,7 @@ ms_processevent(event, sc)
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else
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buttons = (event->bytes[0] & 0x80) ? 0 : 1;
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break;
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default:
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default:
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/* Classic Mouse Protocol (up to 2 buttons) */
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for (i = 0; i < 2; i++, button_bit <<= 1)
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/* 0 when button down */
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@ -506,15 +521,38 @@ ms_processevent(event, sc)
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buttons &= ~button_bit;
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mask = ((mask >> 4) & 0xf)
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| ((mask & 0xf) << 4);
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}
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}
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break;
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}
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new_event.u.m.buttons = sc->sc_mb | buttons;
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new_event.u.m.dx = ((signed int) (event->bytes[1] & 0x3f)) -
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dx = ((int)(event->bytes[1] & 0x3f)) -
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((event->bytes[1] & 0x40) ? 64 : 0);
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new_event.u.m.dy = ((signed int) (event->bytes[0] & 0x3f)) -
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dy = ((int) (event->bytes[0] & 0x3f)) -
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((event->bytes[0] & 0x40) ? 64 : 0);
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if (sc->sc_class == MSCLASS_TRACKPAD) {
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if (sc->sc_down) {
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/* finger is down - collect motion data */
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sc->sc_x += dx;
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sc->sc_y += dy;
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}
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switch (sc->sc_buttons) {
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case 2:
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ams_mangle_2(sc, buttons);
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break;
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case 4:
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ams_mangle_4(sc, buttons);
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break;
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}
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/* filter the pseudo-buttons out */
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buttons &= 1;
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}
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new_event.u.m.buttons = sc->sc_mb | buttons;
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new_event.u.m.dx = dx;
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new_event.u.m.dy = dy;
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if (sc->sc_wsmousedev)
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wsmouse_input(sc->sc_wsmousedev, new_event.u.m.buttons,
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new_event.u.m.dx, -new_event.u.m.dy, 0,
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@ -524,6 +562,70 @@ ms_processevent(event, sc)
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#endif
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}
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static void
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ams_mangle_2(struct ams_softc *sc, int buttons)
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{
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if (buttons & 4) {
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/* finger down on pad */
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if (sc->sc_down == 0) {
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sc->sc_down = 1;
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sc->sc_x = 0;
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sc->sc_y = 0;
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}
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}
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if (buttons & 8) {
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/* finger up */
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if (sc->sc_down) {
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if (((sc->sc_x * sc->sc_x +
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sc->sc_y * sc->sc_y) < 20) &&
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(sc->sc_wsmousedev)) {
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/*
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* if there wasn't much movement between
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* finger down and up again we assume
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* someone tapped the pad and we just
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* send a mouse button event
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*/
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wsmouse_input(sc->sc_wsmousedev,
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1, 0, 0, 0, WSMOUSE_INPUT_DELTA);
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}
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sc->sc_down = 0;
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}
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}
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}
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static void
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ams_mangle_4(struct ams_softc *sc, int buttons)
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{
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if (buttons & 0x20) {
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/* finger down on pad */
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if (sc->sc_down == 0) {
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sc->sc_down = 1;
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sc->sc_x = 0;
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sc->sc_y = 0;
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}
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}
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if ((buttons & 0x20) == 0) {
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/* finger up */
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if (sc->sc_down) {
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if (((sc->sc_x * sc->sc_x +
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sc->sc_y * sc->sc_y) < 20) &&
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(sc->sc_wsmousedev)) {
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/*
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* if there wasn't much movement between
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* finger down and up again we assume
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* someone tapped the pad and we just
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* send a mouse button event
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*/
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wsmouse_input(sc->sc_wsmousedev,
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1, 0, 0, 0, WSMOUSE_INPUT_DELTA);
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}
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sc->sc_down = 0;
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}
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}
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}
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int
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ams_enable(v)
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void *v;
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@ -547,3 +649,36 @@ ams_disable(v)
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void *v;
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{
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}
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static void
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init_trackpad(struct ams_softc *sc)
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{
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int cmd, res;
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u_char buffer[10] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
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u_char b2[10];
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u_char b3[9] = {8, 0x99, 0x94, 0x19, 0xff, 0xb2, 0x8a, 0x1b, 0x50};
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cmd = ADBTALK(sc->adbaddr, 1);
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res = adb_op_sync((Ptr)buffer, NULL, (Ptr)0, cmd);
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if (buffer[0] != 8)
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return;
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/* now whack the pad */
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cmd = ADBLISTEN(sc->adbaddr, 1);
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memcpy(b2, buffer, 10);
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b2[7] = 0x0d;
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adb_op_sync((Ptr)b2, NULL, (Ptr)0, cmd);
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cmd = ADBLISTEN(sc->adbaddr, 2);
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adb_op_sync((Ptr)b3, NULL, (Ptr)0, cmd);
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cmd = ADBLISTEN(sc->adbaddr, 1);
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b2[7] = 0x03;
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adb_op_sync((Ptr)b2, NULL, (Ptr)0, cmd);
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buffer[0] = 0;
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cmd = ADBFLUSH(sc->adbaddr);
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adb_op_sync((Ptr)buffer, NULL, (Ptr)0, cmd);
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}
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@ -1,4 +1,4 @@
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/* $NetBSD: amsvar.h,v 1.4 1999/06/17 06:59:05 tsubai Exp $ */
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/* $NetBSD: amsvar.h,v 1.5 2006/10/15 21:15:21 macallan Exp $ */
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/*
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* Copyright (C) 1998 Colin Wood
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@ -52,6 +52,16 @@ struct ams_softc {
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int sc_mb; /* current button state */
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struct device *sc_wsmousedev;
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/* helpers for trackpads */
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int sc_down;
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/*
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* trackpad protocol variant. Known so far:
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* 2 buttons - PowerBook 3400, single events on button 3 and 4 indicate
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* finger down and up
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* 4 buttons - iBook G4, button 6 indicates finger down, button 4 is
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* always down
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*/
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int sc_x, sc_y;
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};
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/* EMP device classes */
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