Ok, after some arguments about whether it is good behaviour to send a pat=
ch as=20
attachment to the list. Here it is again as attachment.
> > > > > > Here is now an improved version of the patch. It's against
> > > > > > 2.4.21.
> > > > >
> > > > > it is line-break-broken.
> > > >
> > > > Here it is as attachment
> > >
> > > Thank you. I didn't see lkml in the recipients, assume you post the
> > > patch there separately?
> >
> > Documentation/SubmittingPatches states:
> >
> > 6) No MIME, no links, no compression, no attachments. Just plain tex=
t.
>
> it is more guidline than a rule.
--------------Boundary-00=_SO6ZHE36939NHPUWFWOY
Content-Type: text/x-diff;
charset="iso-8859-1";
name="ps2-trackpad-2.4.21.patch"
Content-Transfer-Encoding: quoted-printable
Content-Disposition: attachment; filename="ps2-trackpad-2.4.21.patch"
diff -Naur -X dontdiff linux-2.4.21-orig/Documentation/Configure.help lin=
ux-2.4.21/Documentation/Configure.help
--- linux-2.4.21-orig/Documentation/Configure.help=092003-06-22 15:45:55.=
000000000 +0000
+++ linux-2.4.21/Documentation/Configure.help=092003-06-22 14:10:39.00000=
0000 +0000
@@ -17964,6 +17964,21 @@
<ftp://gnu.systemy.it/pub/gpm/>) solves this problem, or you can get
the "mconv2" utility from <ftp://ibiblio.org/pub/Linux/system/mouse/>.
=20
+Disable trackpad while typing
+CONFIG_DISABLE_TRACKPAD_WHILE_TYPING
+ For people with a notebook that have a build in trackpad.
+
+ It prevents unintended mouse moves and mouse taps while typing on
+ the notebook keyboard.
+
+ The majority of notebooks on the market have a PS/2 trackpad.=20
+ So you will probably say "Y" if you have a notebook with a trackpad.
+
+ Also note that you can control the behaviour of the trackpad via the=20
+ /proc/tty/ps2-trackpad file.
+
+ See Documentation/ps2-trackpad.txt for detailed information.
+
C&T 82C710 mouse port support (as on TI Travelmate)
CONFIG_82C710_MOUSE
This is a certain kind of PS/2 mouse used on the TI Travelmate. If
diff -Naur -X dontdiff linux-2.4.21-orig/Documentation/ps2-trackpad.txt l=
inux-2.4.21/Documentation/ps2-trackpad.txt
--- linux-2.4.21-orig/Documentation/ps2-trackpad.txt=091970-01-01 00:00:0=
0.000000000 +0000
+++ linux-2.4.21/Documentation/ps2-trackpad.txt=092003-06-22 15:13:45.000=
000000 +0000
@@ -0,0 +1,50 @@
+For people with a notebook that have a build in trackpad.
+
+The "Disable trackpad while typing" feature prevents unintended mouse
+moves and mouse taps while typing on the notebook keyboard.
+
+The majority of notebooks on the market have a PS/2 trackpad.=20
+So you will probably say "Y" if you have a notebook with a trackpad.
+
+Also note that you can control the behaviour of the trackpad via the=20
+/proc/tty/ps2-trackpad file, e.g.
+
+Set the delay time to 2 Secs (default is 10 =3D=3D> 1 Sec)
+
+=09echo "delay 20" > /proc/tty/ps2-trackpad
+
+
+Completely disable the trackpad (default 0). Useful if you plug in an
+external mouse.
+
+=09echo "disable 1" > /proc/tty/ps2-trackpad
+
+To completely disable this feature use
+
+=09echo "delay 0" > /proc/tty/ps2-trackpad
+
+
+Escape the keyboard keycode for the key. After these keycodes mouse
+events are passed without a delay. (defaults are the keycodes for
+CTRL, SHIFT, ALT and MS-Windows (both left and right) and Menu
+(Windows Taskbar) keys).=20
+
+This is useful for some applications ( like xterm ) which are using
+keydown-click events.
+
+You can use showkey -k to find out the keycodes of your own keys.=20
+Apply "escape ???" twice to unescape a keycode.
+
+Example: define an escape for HOME-KeyPress=20
+
+=09echo "escape 102" > /proc/tty/ps2-trackpad
+
+If you want to escape KeyRelease events add 0x100 (256) to the actual
+keycode value.
+
+=09echo "escape 358" > /proc/tty/ps2-trackpad
+
+enables mouse events immediately after releasing HOME key.
+
+I can't imagine a situation where mouse events are needed immediately
+after key release events but it's implemented for completeness.
diff -Naur -X dontdiff linux-2.4.21-orig/drivers/char/Config.in linux-2.4=
=2E21/drivers/char/Config.in
--- linux-2.4.21-orig/drivers/char/Config.in=092003-06-22 15:45:58.000000=
000 +0000
+++ linux-2.4.21/drivers/char/Config.in=092003-06-22 08:50:04.000000000 +=
0000
@@ -179,6 +179,13 @@
tristate 'Mouse Support (not serial and bus mice)' CONFIG_MOUSE
if [ "$CONFIG_MOUSE" !=3D "n" ]; then
bool ' PS/2 mouse (aka "auxiliary device") support' CONFIG_PSMOUSE
+
+ if [ "$CONFIG_PSMOUSE" =3D "y" ]
+ then
+ bool ' Disable Trackpad while typing on Notebooks' CONFIG_DISABL=
E_TRACKPAD_WHILE_TYPING
+ fi
+
+
tristate ' C&T 82C710 mouse port support (as on TI Travelmate)' CONF=
IG_82C710_MOUSE
tristate ' PC110 digitizer pad support' CONFIG_PC110_PAD
tristate ' MK712 touch screen support' CONFIG_MK712_MOUSE
diff -Naur -X dontdiff linux-2.4.21-orig/drivers/char/pc_keyb.c linux-2.4=
=2E21/drivers/char/pc_keyb.c
--- linux-2.4.21-orig/drivers/char/pc_keyb.c=092002-11-28 23:53:12.000000=
000 +0000
+++ linux-2.4.21/drivers/char/pc_keyb.c=092003-06-22 15:39:21.000000000 +=
0000
@@ -13,6 +13,14 @@
* Code fixes to handle mouse ACKs properly.
* C. Scott Ananian <cananian@alumni.princeton.edu> 1999-01-29.
*
+ * Implemented the "disable trackpad while typing" feature. This prevent=
s
+ * unintended mouse moves and mouse taps while typing on the keyboard on
+ * notebooks with a PS/2 trackpad.
+ * Hans-Georg Thien <1682-600@onlinehome.de> 2003-04-30.
+ *
+ * Improvements to the "disable trackpad while typing" feature.
+ * Torsten F=F6rtsch <torsten.foertsch@gmx.net> 2003-06-20.
+ *
*/
=20
#include <linux/config.h>
@@ -35,7 +43,7 @@
#include <linux/smp_lock.h>
#include <linux/kd.h>
#include <linux/pm.h>
-
+#include <linux/proc_fs.h>
#include <asm/keyboard.h>
#include <asm/bitops.h>
#include <asm/uaccess.h>
@@ -102,6 +110,133 @@
#define MAX_RETRIES=0960=09=09/* some aux operations take long time*/
#endif /* CONFIG_PSMOUSE */
=20
+#ifdef CONFIG_DISABLE_TRACKPAD_WHILE_TYPING
+
+static int trackpad_skipped_events =3D 0;
+static int last_kbd_event =3D 0; /* timestamp of last kbd event */
+static int last_kbd_scancode =3D 0;=20
+static int last_kbd_scancode_state =3D 0;=20
+static int trackpad_disable =3D 0;
+static int trackpad_delay =3D HZ; /* default delay is 1Sec */
+
+static unsigned char trackpad_escape[0x200/8]; /* 2*256-Bit vector of ke=
yboard scancodes to ignore */
+
+
+static int trackpad_write_proc(struct file *file,
+ const char *buf,
+ unsigned long len,
+ void *data)
+{
+
+/*
+ * handle write requests to /proc/tty/ps2-trackpad
+ */
+ char lbuf[32];
+ int tmp;
+ int success =3D 0;
+=20
+ if (len > sizeof(lbuf)-1) return -EINVAL;
+
+ if (copy_from_user(lbuf, buf, len)) return -EFAULT;
+
+ lbuf[len] =3D '\0';
+
+ if (sscanf(lbuf, "delay %d", &tmp)) {
+ trackpad_delay =3D (tmp * HZ) / 10; /* convert 1/10Sec t=
o jiffies */
+ success=3D1;=20
+ }
+
+ if (sscanf(lbuf, "disable %d", &tmp)) {
+ trackpad_disable =3D tmp ? 1 : 0;
+ success=3D1;=20
+ }
+
+ if (sscanf(lbuf, "escape %i", &tmp)) {
+ if ((tmp < 0) || (tmp >=3D0x200)) return -EINVAL;
+ change_bit(tmp, trackpad_escape);
+ success=3D1;=20
+ }
+
+ if (!success) return -EINVAL;
+
+ return len;
+}
+
+static int trackpad_read_proc(char *buf, char **start, off_t ofs,
+ int count, int *eof, void *data)
+{ =20
+
+/*=20
+ * handle read requests to /proc/tty/ps2-trackpad=20
+ */
+
+ int len =3D 0;
+ int i;
+
+ len +=3D sprintf(buf+len, "delay %d\n",=20
+ (trackpad_delay * 10) / HZ); /* convert =
jiffies to 1/10Sec */
+ len +=3D sprintf(buf+len, "disable %d\n", trackpad_disable);
+
+ for (i =3D 0; i < sizeof(trackpad_escape) * 8; i++) {
+ if (test_bit(i, trackpad_escape)) {
+ len +=3D sprintf(buf+len, "escape %d\n", i);
+ }
+ }
+
+ *eof =3D 1;
+ buf[len+1] =3D '\0';
+ return len;
+}
+
+static int trackpad_config_setup(void)
+{ =20
+
+/*=20
+ * create read-write entries in /proc/tty/ps2-trackpad and setup some=20
+ * defaults for the trackpad handling
+ */
+
+ struct proc_dir_entry *trackpad_proc_entry;
+
+ trackpad_proc_entry=3Dcreate_proc_entry("tty/ps2-trackpad", 0, N=
ULL);
+
+ if (trackpad_proc_entry =3D=3D NULL) return -1;
+
+ trackpad_proc_entry->mode |=3D S_IWUGO;
+ trackpad_proc_entry->read_proc =3D trackpad_read_proc;
+ trackpad_proc_entry->write_proc =3D trackpad_write_proc;
+
+ =20
+ /* set keyboard scancodes to ignore */
+ memset(trackpad_escape, 0, sizeof(trackpad_escape));
+ set_bit(0x1d, trackpad_escape); /* CTRL-L keydown */
+ set_bit(0x2a, trackpad_escape); /* SHIFT-L keydown */
+ set_bit(0x38, trackpad_escape); /* ALT-L keydown */
+
+ set_bit(0x61, trackpad_escape); /* CTRL-R keydown */
+ set_bit(0x36, trackpad_escape); /* SHIFT-R keydown */
+ set_bit(0x64, trackpad_escape); /* ALT-R keydown */
+
+ set_bit(0x7d, trackpad_escape); /* MS left WINDOWS keydown */
+ set_bit(0x7e, trackpad_escape); /* MS right WINDOWS keydown */
+ set_bit(0x7f, trackpad_escape); /* MS right MENU keydown */
+#if 0
+ set_bit(0x01, trackpad_escape); /* ESC keydown */
+ set_bit(0x66, trackpad_escape); /* HOME keydown */
+ set_bit(0x67, trackpad_escape); /* CURSORUP keydown */
+ set_bit(0x68, trackpad_escape); /* PAGEUP keydown */
+ set_bit(0x69, trackpad_escape); /* CURSOR-L keydown */
+ set_bit(0x6a, trackpad_escape); /* CURSOR-R keydown */
+ set_bit(0x6b, trackpad_escape); /* END keydown */
+ set_bit(0x6c, trackpad_escape); /* CURSORDOWN keydown */
+ set_bit(0x6d, trackpad_escape); /* PAGEDOWN keydown */
+#endif
+
+ return 0;
+}
+
+#endif /* CONFIG_DISABLE_TRACKPAD_WHILE_TYPING */
+
/*
* Wait for keyboard controller input buffer to drain.
*
@@ -449,6 +584,24 @@
=09=09return;
=09}
=20
+#ifdef CONFIG_DISABLE_TRACKPAD_WHILE_TYPING
+ if (trackpad_disable) return;
+
+ if (!test_bit(last_kbd_scancode, trackpad_escape)) {
+=09 /* do nothing if time since last kbd event is less then trackpad_de=
lay */
+=09 if (abs(jiffies - last_kbd_event) < trackpad_delay) {
+=09 trackpad_skipped_events++;
+=09 return;
+=09 }
+ }
+=09
+=09if (trackpad_skipped_events%12) {
+=09 trackpad_skipped_events++;
+=09 return;
+=09}
+=09trackpad_skipped_events=3D0;
+#endif
+
=09prev_code =3D scancode;
=09add_mouse_randomness(scancode);
=09if (aux_count) {
@@ -469,6 +622,45 @@
=20
static inline void handle_keyboard_event(unsigned char scancode)
{
+
+#ifdef CONFIG_DISABLE_TRACKPAD_WHILE_TYPING
+ /* this more or less resembles the pckbd_translate() algorithm */
+ if( scancode=3D=3D0xe0 && last_kbd_scancode_state=3D=3D0 ) { /* escape=
1b */
+ last_kbd_scancode_state =3D 0x100;
+ } else if( scancode=3D=3D0xe1 && last_kbd_scancode_state=3D=3D0 ) { /*=
escape 2b */
+ last_kbd_scancode_state =3D 0x200;
+ } else if(last_kbd_scancode_state=3D=3D0x100) {
+ /* E0 table lookup */
+ if( last_kbd_scancode =3D e0_keys[scancode&0x7f] ) {
+ if( scancode & 0x80 ) last_kbd_scancode|=3D0x100;
+ last_kbd_event =3D jiffies;
+ }
+ last_kbd_scancode_state=3D0;
+ } else if(last_kbd_scancode_state=3D=3D0x200) {
+ if( (scancode&0x7f)=3D=3D0x1d ) {
+ last_kbd_scancode_state++;
+ } else {
+ last_kbd_scancode_state=3D0; /* unknown e1 sequence */
+ }
+ } else if(last_kbd_scancode_state=3D=3D0x201) {
+ if( (scancode&0x7f)=3D=3D0x45 ) { /* PAUSE key */
+ last_kbd_scancode =3D E1_PAUSE;
+ if( scancode & 0x80 ) last_kbd_scancode|=3D0x100;
+ last_kbd_event =3D jiffies;
+ }
+ last_kbd_scancode_state=3D0;
+ } else {
+ last_kbd_scancode =3D (scancode&0x7f);
+ if( last_kbd_scancode >=3D SC_LIM )
+ last_kbd_scancode=3Dhigh_keys[last_kbd_scancode - SC_LIM];
+ if( last_kbd_scancode ) {
+ if( scancode & 0x80 ) last_kbd_scancode|=3D0x100;
+ last_kbd_event =3D jiffies;
+ }
+ last_kbd_scancode_state=3D0;
+ }
+#endif
+
#ifdef CONFIG_VT
=09kbd_exists =3D 1;
=09if (do_acknowledge(scancode))
@@ -1219,6 +1411,10 @@
=09kbd_write_command(KBD_CCMD_MOUSE_DISABLE); /* Disable aux device. */
=09kbd_write_cmd(AUX_INTS_OFF); /* Disable controller ints. */
=20
+#ifdef CONFIG_DISABLE_TRACKPAD_WHILE_TYPING
+ trackpad_config_setup();
+#endif
+
=09return 0;
}
=20
--------------Boundary-00=_SO6ZHE36939NHPUWFWOY--
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