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| Current File : //sys/amd64/compile/hs32/modules/usr/src/sys/modules/usb/umodem/@/dev/adb/adb_mouse.c |
/*-
* Copyright (C) 2008 Nathan Whitehorn
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD: release/9.1.0/sys/dev/adb/adb_mouse.c 199888 2009-11-28 17:48:25Z nwhitehorn $
*/
#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/mouse.h>
#include <sys/poll.h>
#include <sys/condvar.h>
#include <sys/selinfo.h>
#include <sys/sysctl.h>
#include <sys/uio.h>
#include <sys/fcntl.h>
#include <sys/kernel.h>
#include <machine/bus.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include "adb.h"
#define CDEV_GET_SOFTC(x) (x)->si_drv1
static int adb_mouse_probe(device_t dev);
static int adb_mouse_attach(device_t dev);
static int adb_mouse_detach(device_t dev);
static void adb_init_trackpad(device_t dev);
static int adb_tapping_sysctl(SYSCTL_HANDLER_ARGS);
static d_open_t ams_open;
static d_close_t ams_close;
static d_read_t ams_read;
static d_ioctl_t ams_ioctl;
static d_poll_t ams_poll;
static u_int adb_mouse_receive_packet(device_t dev, u_char status,
u_char command, u_char reg, int len, u_char *data);
struct adb_mouse_softc {
device_t sc_dev;
struct mtx sc_mtx;
struct cv sc_cv;
int flags;
#define AMS_EXTENDED 0x1
#define AMS_TOUCHPAD 0x2
uint16_t dpi;
mousehw_t hw;
mousemode_t mode;
u_char id[4];
int buttons;
u_int sc_tapping;
int button_buf;
int last_buttons;
int xdelta, ydelta;
int8_t packet[8];
size_t packet_read_len;
struct cdev *cdev;
struct selinfo rsel;
};
static device_method_t adb_mouse_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, adb_mouse_probe),
DEVMETHOD(device_attach, adb_mouse_attach),
DEVMETHOD(device_detach, adb_mouse_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
/* ADB interface */
DEVMETHOD(adb_receive_packet, adb_mouse_receive_packet),
{ 0, 0 }
};
static driver_t adb_mouse_driver = {
"ams",
adb_mouse_methods,
sizeof(struct adb_mouse_softc),
};
static devclass_t adb_mouse_devclass;
DRIVER_MODULE(ams, adb, adb_mouse_driver, adb_mouse_devclass, 0, 0);
static struct cdevsw ams_cdevsw = {
.d_version = D_VERSION,
.d_flags = 0,
.d_open = ams_open,
.d_close = ams_close,
.d_read = ams_read,
.d_ioctl = ams_ioctl,
.d_poll = ams_poll,
.d_name = "ams",
};
static int
adb_mouse_probe(device_t dev)
{
uint8_t type;
type = adb_get_device_type(dev);
if (type != ADB_DEVICE_MOUSE)
return (ENXIO);
device_set_desc(dev,"ADB Mouse");
return (0);
}
static int
adb_mouse_attach(device_t dev)
{
struct adb_mouse_softc *sc;
char *description = "Unknown Pointing Device";
size_t r1_len;
u_char r1[8];
sc = device_get_softc(dev);
sc->sc_dev = dev;
mtx_init(&sc->sc_mtx,"ams",MTX_DEF,0);
cv_init(&sc->sc_cv,"ams");
sc->flags = 0;
sc->hw.buttons = 2;
sc->hw.iftype = MOUSE_IF_UNKNOWN;
sc->hw.type = MOUSE_UNKNOWN;
sc->hw.model = sc->hw.hwid = 0;
sc->mode.protocol = MOUSE_PROTO_SYSMOUSE;
sc->mode.rate = -1;
sc->mode.resolution = 100;
sc->mode.accelfactor = 0;
sc->mode.level = 0;
sc->mode.packetsize = 5;
sc->buttons = 0;
sc->sc_tapping = 0;
sc->button_buf = 0;
sc->last_buttons = 0;
sc->packet_read_len = 0;
/* Try to switch to extended protocol */
adb_set_device_handler(dev,4);
switch(adb_get_device_handler(dev)) {
case 1:
sc->mode.resolution = 100;
break;
case 2:
sc->mode.resolution = 200;
break;
case 4:
r1_len = adb_read_register(dev,1,r1);
if (r1_len < 8)
break;
sc->flags |= AMS_EXTENDED;
memcpy(&sc->hw.hwid,r1,4);
sc->mode.resolution = (r1[4] << 8) | r1[5];
switch (r1[6]) {
case 0:
sc->hw.type = MOUSE_PAD;
description = "Tablet";
break;
case 1:
sc->hw.type = MOUSE_MOUSE;
description = "Mouse";
break;
case 2:
sc->hw.type = MOUSE_TRACKBALL;
description = "Trackball";
break;
case 3:
sc->flags |= AMS_TOUCHPAD;
sc->hw.type = MOUSE_PAD;
adb_init_trackpad(dev);
description = "Touchpad";
break;
}
sc->hw.buttons = r1[7];
device_printf(dev,"%d-button %d-dpi %s\n",
sc->hw.buttons, sc->mode.resolution,description);
/*
* Check for one of MacAlly's non-compliant 2-button mice.
* These claim to speak the extended mouse protocol, but
* instead speak the standard protocol and only when their
* handler is set to 0x42.
*/
if (sc->hw.hwid == 0x4b4f4954) {
adb_set_device_handler(dev,0x42);
if (adb_get_device_handler(dev) == 0x42) {
device_printf(dev, "MacAlly 2-Button Mouse\n");
sc->flags &= ~AMS_EXTENDED;
}
}
break;
}
sc->cdev = make_dev(&ams_cdevsw, device_get_unit(dev),
UID_ROOT, GID_OPERATOR, 0644, "ams%d",
device_get_unit(dev));
sc->cdev->si_drv1 = sc;
adb_set_autopoll(dev,1);
return (0);
}
static int
adb_mouse_detach(device_t dev)
{
struct adb_mouse_softc *sc;
adb_set_autopoll(dev,0);
sc = device_get_softc(dev);
destroy_dev(sc->cdev);
mtx_destroy(&sc->sc_mtx);
cv_destroy(&sc->sc_cv);
return (0);
}
static void
adb_init_trackpad(device_t dev)
{
struct adb_mouse_softc *sc;
struct sysctl_ctx_list *ctx;
struct sysctl_oid *tree;
size_t r1_len;
u_char r1[8];
u_char r2[8];
sc = device_get_softc(dev);
r1_len = adb_read_register(dev, 1, r1);
/* An Extended Mouse register1 must return 8 bytes. */
if (r1_len != 8)
return;
if((r1[6] != 0x0d))
{
r1[6] = 0x0d;
adb_write_register(dev, 1, 8, r1);
r1_len = adb_read_register(dev, 1, r1);
if (r1[6] != 0x0d)
{
device_printf(dev, "ADB Mouse = 0x%x "
"(non-Extended Mode)\n", r1[6]);
return;
} else {
device_printf(dev, "ADB Mouse = 0x%x "
"(Extended Mode)\n", r1[6]);
/* Set ADB Extended Features to default values,
enabled. */
r2[0] = 0x19; /* Clicking: 0x19 disabled 0x99 enabled */
r2[1] = 0x94; /* Dragging: 0x14 disabled 0x94 enabled */
r2[2] = 0x19;
r2[3] = 0xff; /* DragLock: 0xff disabled 0xb2 enabled */
r2[4] = 0xb2;
r2[5] = 0x8a;
r2[6] = 0x1b;
r2[7] = 0x57; /* 0x57 bits 3:0 for W mode */
adb_write_register(dev, 2, 8, r2);
}
}
/*
* Set up sysctl
*/
ctx = device_get_sysctl_ctx(dev);
tree = device_get_sysctl_tree(dev);
SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "tapping",
CTLTYPE_INT | CTLFLAG_RW, sc, 0, adb_tapping_sysctl,
"I", "Tapping the pad causes button events");
return;
}
static u_int
adb_mouse_receive_packet(device_t dev, u_char status, u_char command,
u_char reg, int len, u_char *data)
{
struct adb_mouse_softc *sc;
int i = 0;
int xdelta, ydelta;
int buttons, tmp_buttons;
sc = device_get_softc(dev);
if (command != ADB_COMMAND_TALK || reg != 0 || len < 2)
return (0);
ydelta = data[0] & 0x7f;
xdelta = data[1] & 0x7f;
buttons = 0;
buttons |= !(data[0] & 0x80);
buttons |= !(data[1] & 0x80) << 1;
if (sc->flags & AMS_EXTENDED) {
for (i = 2; i < len && i < 5; i++) {
xdelta |= (data[i] & 0x07) << (3*i + 1);
ydelta |= (data[i] & 0x70) << (3*i - 3);
buttons |= !(data[i] & 0x08) << (2*i - 2);
buttons |= !(data[i] & 0x80) << (2*i - 1);
}
} else {
len = 2; /* Ignore extra data */
}
/* Do sign extension as necessary */
if (xdelta & (0x40 << 3*(len-2)))
xdelta |= 0xffffffc0 << 3*(len - 2);
if (ydelta & (0x40 << 3*(len-2)))
ydelta |= 0xffffffc0 << 3*(len - 2);
if ((sc->flags & AMS_TOUCHPAD) && (sc->sc_tapping == 1)) {
tmp_buttons = buttons;
if (buttons == 0x12) {
/* Map a double tap on button 3.
Keep the button state for the next sequence.
A double tap sequence is followed by a single tap
sequence.
*/
tmp_buttons = 0x3;
sc->button_buf = tmp_buttons;
} else if (buttons == 0x2) {
/* Map a single tap on button 2. But only if it is
not a successor from a double tap.
*/
if (sc->button_buf != 0x3)
tmp_buttons = 0x2;
else
tmp_buttons = 0;
sc->button_buf = 0;
}
buttons = tmp_buttons;
}
/*
* Some mice report high-numbered buttons on the wrong button number,
* so set the highest-numbered real button as pressed if there are
* mysterious high-numbered ones set.
*
* Don't do this for touchpads, because touchpads also trigger
* high button events when they are touched.
*/
if (buttons & ~((1 << sc->hw.buttons) - 1)
&& !(sc->flags & AMS_TOUCHPAD)) {
buttons |= 1 << (sc->hw.buttons - 1);
}
buttons &= (1 << sc->hw.buttons) - 1;
mtx_lock(&sc->sc_mtx);
/* Add in our new deltas, and take into account
Apple's opposite meaning for Y axis motion */
sc->xdelta += xdelta;
sc->ydelta -= ydelta;
sc->buttons = buttons;
mtx_unlock(&sc->sc_mtx);
cv_broadcast(&sc->sc_cv);
selwakeuppri(&sc->rsel, PZERO);
return (0);
}
static int
ams_open(struct cdev *dev, int flag, int fmt, struct thread *p)
{
struct adb_mouse_softc *sc;
sc = CDEV_GET_SOFTC(dev);
if (sc == NULL)
return (ENXIO);
mtx_lock(&sc->sc_mtx);
sc->packet_read_len = 0;
sc->xdelta = 0;
sc->ydelta = 0;
sc->buttons = 0;
mtx_unlock(&sc->sc_mtx);
return (0);
}
static int
ams_close(struct cdev *dev, int flag, int fmt, struct thread *p)
{
struct adb_mouse_softc *sc;
sc = CDEV_GET_SOFTC(dev);
cv_broadcast(&sc->sc_cv);
selwakeuppri(&sc->rsel, PZERO);
return (0);
}
static int
ams_poll(struct cdev *dev, int events, struct thread *p)
{
struct adb_mouse_softc *sc;
sc = CDEV_GET_SOFTC(dev);
if (sc == NULL)
return (EIO);
if (events & (POLLIN | POLLRDNORM)) {
mtx_lock(&sc->sc_mtx);
if (sc->xdelta == 0 && sc->ydelta == 0 &&
sc->buttons == sc->last_buttons) {
selrecord(p, &sc->rsel);
events = 0;
} else {
events &= (POLLIN | POLLRDNORM);
}
mtx_unlock(&sc->sc_mtx);
}
return events;
}
static int
ams_read(struct cdev *dev, struct uio *uio, int flag)
{
struct adb_mouse_softc *sc;
size_t len;
int8_t outpacket[8];
int error;
sc = CDEV_GET_SOFTC(dev);
if (sc == NULL)
return (EIO);
if (uio->uio_resid <= 0)
return (0);
mtx_lock(&sc->sc_mtx);
if (!sc->packet_read_len) {
if (sc->xdelta == 0 && sc->ydelta == 0 &&
sc->buttons == sc->last_buttons) {
if (flag & O_NONBLOCK) {
mtx_unlock(&sc->sc_mtx);
return EWOULDBLOCK;
}
/* Otherwise, block on new data */
error = cv_wait_sig(&sc->sc_cv, &sc->sc_mtx);
if (error) {
mtx_unlock(&sc->sc_mtx);
return (error);
}
}
sc->packet[0] = 1 << 7;
sc->packet[0] |= (!(sc->buttons & 1)) << 2;
sc->packet[0] |= (!(sc->buttons & 4)) << 1;
sc->packet[0] |= (!(sc->buttons & 2));
if (sc->xdelta > 127) {
sc->packet[1] = 127;
sc->packet[3] = sc->xdelta - 127;
} else if (sc->xdelta < -127) {
sc->packet[1] = -127;
sc->packet[3] = sc->xdelta + 127;
} else {
sc->packet[1] = sc->xdelta;
sc->packet[3] = 0;
}
if (sc->ydelta > 127) {
sc->packet[2] = 127;
sc->packet[4] = sc->ydelta - 127;
} else if (sc->ydelta < -127) {
sc->packet[2] = -127;
sc->packet[4] = sc->ydelta + 127;
} else {
sc->packet[2] = sc->ydelta;
sc->packet[4] = 0;
}
/* No Z movement */
sc->packet[5] = 0;
sc->packet[6] = 0;
sc->packet[7] = ~((uint8_t)(sc->buttons >> 3)) & 0x7f;
sc->last_buttons = sc->buttons;
sc->xdelta = 0;
sc->ydelta = 0;
sc->packet_read_len = sc->mode.packetsize;
}
len = (sc->packet_read_len > uio->uio_resid) ?
uio->uio_resid : sc->packet_read_len;
memcpy(outpacket,sc->packet +
(sc->mode.packetsize - sc->packet_read_len),len);
sc->packet_read_len -= len;
mtx_unlock(&sc->sc_mtx);
uiomove(outpacket,len,uio);
return (0);
}
static int
ams_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag,
struct thread *p)
{
struct adb_mouse_softc *sc;
mousemode_t mode;
sc = CDEV_GET_SOFTC(dev);
if (sc == NULL)
return (EIO);
switch (cmd) {
case MOUSE_GETHWINFO:
*(mousehw_t *)addr = sc->hw;
break;
case MOUSE_GETMODE:
*(mousemode_t *)addr = sc->mode;
break;
case MOUSE_SETMODE:
mode = *(mousemode_t *)addr;
addr = (caddr_t)&mode.level;
/* Fallthrough */
case MOUSE_SETLEVEL:
if (*(int *)addr == -1)
break;
else if (*(int *)addr == 1) {
sc->mode.level = 1;
sc->mode.packetsize = 8;
break;
} else if (*(int *)addr == 0) {
sc->mode.level = 0;
sc->mode.packetsize = 5;
break;
}
return EINVAL;
case MOUSE_GETLEVEL:
*(int *)addr = sc->mode.level;
break;
case MOUSE_GETSTATUS: {
mousestatus_t *status = (mousestatus_t *) addr;
mtx_lock(&sc->sc_mtx);
status->button = sc->buttons;
status->obutton = sc->last_buttons;
status->flags = status->button ^ status->obutton;
if (sc->xdelta != 0 || sc->ydelta)
status->flags |= MOUSE_POSCHANGED;
if (status->button != status->obutton)
status->flags |= MOUSE_BUTTONSCHANGED;
status->dx = sc->xdelta;
status->dy = sc->ydelta;
status->dz = 0;
sc->xdelta = 0;
sc->ydelta = 0;
sc->last_buttons = sc->buttons;
mtx_unlock(&sc->sc_mtx);
break; }
default:
return ENOTTY;
}
return (0);
}
static int
adb_tapping_sysctl(SYSCTL_HANDLER_ARGS)
{
struct adb_mouse_softc *sc = arg1;
device_t dev;
int error;
u_char r2[8];
u_int tapping;
dev = sc->sc_dev;
tapping = sc->sc_tapping;
error = sysctl_handle_int(oidp, &tapping, 0, req);
if (error || !req->newptr)
return (error);
if (tapping == 1) {
adb_read_register(dev, 2, r2);
r2[0] = 0x99; /* enable tapping. */
adb_write_register(dev, 2, 8, r2);
sc->sc_tapping = 1;
} else if (tapping == 0) {
adb_read_register(dev, 2, r2);
r2[0] = 0x19; /* disable tapping. */
adb_write_register(dev, 2, 8, r2);
sc->sc_tapping = 0;
}
else
return (EINVAL);
return (0);
}