Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264134AbTE0Uc3 (ORCPT ); Tue, 27 May 2003 16:32:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264157AbTE0Uc2 (ORCPT ); Tue, 27 May 2003 16:32:28 -0400 Received: from moutng.kundenserver.de ([212.227.126.184]:39149 "EHLO moutng.kundenserver.de") by vger.kernel.org with ESMTP id S264134AbTE0UbA (ORCPT ); Tue, 27 May 2003 16:31:00 -0400 Message-ID: <3ED3CECA.9020706@onlinehome.de> Date: Tue, 27 May 2003 22:47:06 +0200 From: Hans-Georg Thien <1682-600@onlinehome.de> User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.3) Gecko/20030312 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Kernel Mailing List CC: Khalid Aziz , subscript@free.fr Subject: Re: [RFC][PATCH] "Disable Trackpad while typing" on Notebooks withh aPS/2 Trackpad References: <3EB19625.6040904@onlinehome.de> <3EBAAC12.F4EA298D@hp.com> In-Reply-To: <3EBAAC12.F4EA298D@hp.com> Content-Type: multipart/mixed; boundary="------------070303040705070404020104" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 10193 Lines: 314 This is a multi-part message in MIME format. --------------070303040705070404020104 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Hans-Georg Thien wrote: > The short story > --------------- > Apple MacIntosh iBook Notebooks computers have a nice feature that > prevents unintended trackpad input while typing on the keyboard. There > are no mouse-moves or mouse-taps for a short period of time after each > keystroke. I wanted to have this feature on my i386 notebook ... It it is now possible to adjust some settings via echo ???? > /proc/tty/ps2-trackpad (1) Set the delay time to 2 Secs (default is 10 ==> 1 Sec) echo "delay 20" > /proc/tty/ps2-trackpad (2) Completely disable the trackpad (default 0). Useful if you plug in an external mouse. echo "disable 1" > /proc/tty/ps2-trackpad (3) Escape the keyboard scancode for a key. These scancodes are passed without a delay. (defaults are the scancodes for CTRL and SHIFT keys). This is useful for some applications ( like xterm ) which are using keydown events in combination with mouseclick events. You can use showkey -s to find out the scancodes of your own keys. To unescape a scancode you must apply that scancode twice! For keys with multiple scancodes you must use the *last* generated scancode. Example: define an escape for HOME-KeyDown echo "escape 0x047" > /proc/tty/ps2-trackpad --------------070303040705070404020104 Content-Type: text/plain; name="trackpad-2.4.20.diff" Content-Transfer-Encoding: 7bit Content-Disposition: inline; filename="trackpad-2.4.20.diff" --- /usr/src/linux-2.4.20/Documentation/Configure.help Fri Nov 29 00:53:08 2002 +++ /usr/src/linux/Documentation/Configure.help Wed May 28 00:04:44 2003 @@ -17752,6 +17752,44 @@ ) solves this problem, or you can get the "mconv2" utility from . +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. + 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 + /proc/tty/ps2-trackpad file, e.g. + + Set the delay time to 2 Secs (default is 10 ==> 1 Sec) + + echo "delay 20" > /proc/tty/ps2-trackpad + + + Completely disable the trackpad (default 0). Useful if you plug in an + external mouse. + + echo "disable 1" > /proc/tty/ps2-trackpad + + + Escape the keyboard scancode for the key. These scancodes are passed + without a delay. (defaults are the scancodes for CTRL and SHIFT keys). + + This is useful for some applications ( like xterm ) which are using + keydown-click events. + + You can use showkey -s to find out the scancodes of your own keys. + Apply "escape 0x0??" twice to unescape a scancode. For keys with + multiple scancodes you must use the *last* generated scancode. + + Example: define an escape for HOME-KeyDown + + echo "escape 0x047" > /proc/tty/ps2-trackpad + 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 --- /usr/src/linux-2.4.20/drivers/char/Config.in Fri Nov 29 00:53:12 2002 +++ /usr/src/linux/drivers/char/Config.in Thu May 1 02:30:45 2003 @@ -170,6 +170,13 @@ tristate 'Mouse Support (not serial and bus mice)' CONFIG_MOUSE if [ "$CONFIG_MOUSE" != "n" ]; then bool ' PS/2 mouse (aka "auxiliary device") support' CONFIG_PSMOUSE + + if [ "$CONFIG_PSMOUSE" = "y" ] + then + bool ' Disable Trackpad while typing on Notebooks' CONFIG_DISABLE_TRACKPAD_WHILE_TYPING + fi + + tristate ' C&T 82C710 mouse port support (as on TI Travelmate)' CONFIG_82C710_MOUSE tristate ' PC110 digitizer pad support' CONFIG_PC110_PAD tristate ' MK712 touch screen support' CONFIG_MK712_MOUSE --- /usr/src/linux-2.4.20/drivers/char/pc_keyb.c Fri Nov 29 00:53:12 2002 +++ /usr/src/linux/drivers/char/pc_keyb.c Tue May 27 23:08:46 2003 @@ -13,6 +13,11 @@ * Code fixes to handle mouse ACKs properly. * C. Scott Ananian 1999-01-29. * + * Implemented the "disable trackpad while typing" feature. This prevents + * 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. + * */ #include @@ -35,7 +40,7 @@ #include #include #include - +#include #include #include #include @@ -102,6 +107,125 @@ #define MAX_RETRIES 60 /* some aux operations take long time*/ #endif /* CONFIG_PSMOUSE */ +#ifdef CONFIG_DISABLE_TRACKPAD_WHILE_TYPING + +static int last_kbd_event = 0; /* timestamp of last kbd event */ +static int last_kbd_scancode = 0; +static int trackpad_disable = 0; +static int trackpad_delay = HZ; /* default delay is 1Sec */ + +static unsigned char trackpad_escape[256/8]; /* 256-Bit vector of keyboard 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 = 0; + + if (len > sizeof(lbuf)-1) return -EINVAL; + + if (copy_from_user(lbuf, buf, len)) return -EFAULT; + + lbuf[len] = '\0'; + + if (sscanf(lbuf, "delay %d", &tmp)) { + trackpad_delay = (tmp * HZ) / 10; /* convert 1/10Sec to jiffies */ + success=1; + } + + if (sscanf(lbuf, "disable %d", &tmp)) { + trackpad_disable = tmp ? 1 : 0; + success=1; + } + + if (sscanf(lbuf, "escape 0x%x", &tmp)) { + if ((tmp < 0) || (tmp > 255)) return -EINVAL; + change_bit(tmp, trackpad_escape); + success=1; + } + + if (!success) return -EINVAL; + + return len; +} + +static int trackpad_read_proc(char *buf, char **start, off_t ofs, + int count, int *eof, void *data) +{ + +/* + * handle read requests to /proc/tty/ps2-trackpad + */ + + int len = 0; + int i; + + len += sprintf(buf+len, "delay %d\n", + (trackpad_delay * 10) / HZ); /* convert jiffies to 1/10Sec */ + len += sprintf(buf+len, "disable %d\n", trackpad_disable); + + for (i = 0; i < sizeof(trackpad_escape) * 8; i++) { + if (test_bit(i, trackpad_escape)) { + len += sprintf(buf+len, "escape 0x0%x\n", i); + } + } + + *eof = 1; + buf[len+1] = '\0'; + return len; +} + +static int trackpad_config_setup(void) +{ + +/* + * create read-write entries in /proc/tty/ps2-trackpad and setup some + * defaults for the trackpad handling + */ + + struct proc_dir_entry *trackpad_proc_entry; + + trackpad_proc_entry=create_proc_entry("tty/ps2-trackpad", 0, NULL); + + if (trackpad_proc_entry == NULL) return -1; + + trackpad_proc_entry->mode |= S_IWUGO; + trackpad_proc_entry->read_proc = trackpad_read_proc; + trackpad_proc_entry->write_proc = trackpad_write_proc; + + + /* set keyboard scancodes to ignore */ + memset(trackpad_escape, 0, sizeof(trackpad_escape)); + set_bit(0x1d, trackpad_escape); /* CTRL-L/CTRL-R keydown */ + set_bit(0x2a, trackpad_escape); /* SHIFT-L keydown */ + set_bit(0x36, trackpad_escape); /* SHIFT-R keydown */ +#if 0 + set_bit(0x38, trackpad_escape); /* ALT-L/ALT-R keydown */ + set_bit(0x01, trackpad_escape); /* ESC keydown */ + set_bit(0x47, trackpad_escape); /* HOME keydown */ + set_bit(0x48, trackpad_escape); /* CURSORUP keydown */ + set_bit(0x49, trackpad_escape); /* PAGEUP keydown */ + set_bit(0x4b, trackpad_escape); /* CURSOR-L keydown */ + set_bit(0x4d, trackpad_escape); /* CURSOR-R keydown */ + set_bit(0x4f, trackpad_escape); /* END keydown */ + set_bit(0x50, trackpad_escape); /* CURSORDOWN keydown */ + set_bit(0x51, trackpad_escape); /* PAGEDOWN keydown */ + set_bit(0x5d, trackpad_escape); /* MENU keydown */ +#endif + + return 0; +} + +#endif /* CONFIG_DISABLE_TRACKPAD_WHILE_TYPING */ + /* * Wait for keyboard controller input buffer to drain. * @@ -449,6 +573,15 @@ return; } +#ifdef CONFIG_DISABLE_TRACKPAD_WHILE_TYPING + if (trackpad_disable) return; + + if (!test_bit(last_kbd_scancode, trackpad_escape)) { + /* do nothing if time since last kbd event is less then trackpad_delay */ + if (abs(jiffies - last_kbd_event) < trackpad_delay) return; + } +#endif + prev_code = scancode; add_mouse_randomness(scancode); if (aux_count) { @@ -469,6 +602,12 @@ static inline void handle_keyboard_event(unsigned char scancode) { + +#ifdef CONFIG_DISABLE_TRACKPAD_WHILE_TYPING + last_kbd_event = jiffies; + last_kbd_scancode = scancode; +#endif + #ifdef CONFIG_VT kbd_exists = 1; if (do_acknowledge(scancode)) @@ -1219,6 +1358,10 @@ kbd_write_command(KBD_CCMD_MOUSE_DISABLE); /* Disable aux device. */ kbd_write_cmd(AUX_INTS_OFF); /* Disable controller ints. */ +#ifdef CONFIG_DISABLE_TRACKPAD_WHILE_TYPING + trackpad_config_setup(); +#endif + return 0; } --------------070303040705070404020104-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/