lkml.org 
[lkml]   [2007]   [Oct]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH] vc bell config

It is already possible to deactivate the vc bell on a per-tty basis,
by using echo -en "\e[11;0]", but this is reset on reset(1).

This adds a sysfs parameter to globally control the vc bell, as well
as sysfs parameters for default pitch and duration.

Signed-off-by: Jan Engelhardt <jengelh@gmx.de>

---
drivers/char/vt.c | 18 +++++++++++-------
1 file changed, 11 insertions(+), 7 deletions(-)

Index: linux-2.6.23/drivers/char/vt.c
===================================================================
--- linux-2.6.23.orig/drivers/char/vt.c
+++ linux-2.6.23/drivers/char/vt.c
@@ -134,8 +134,12 @@ const struct consw *conswitchp;
/*
* Here is the default bell parameters: 750HZ, 1/8th of a second
*/
-#define DEFAULT_BELL_PITCH 750
-#define DEFAULT_BELL_DURATION (HZ/8)
+static unsigned int default_bell_pitch = 750;
+static unsigned int default_bell_duration = HZ / 8;
+static unsigned int vc_bell_enabled = true;
+module_param_named(bell_pitch, default_bell_pitch, uint, S_IRUGO | S_IWUSR);
+module_param_named(bell_duration, default_bell_duration, uint, S_IRUGO | S_IWUSR);
+module_param_named(bell_enabled, vc_bell_enabled, uint, S_IRUGO | S_IWUSR);

struct vc vc_cons [MAX_NR_CONSOLES];

@@ -1401,14 +1405,14 @@ static void setterm_command(struct vc_da
if (vc->vc_npar >= 1)
vc->vc_bell_pitch = vc->vc_par[1];
else
- vc->vc_bell_pitch = DEFAULT_BELL_PITCH;
+ vc->vc_bell_pitch = default_bell_pitch;
break;
case 11: /* set bell duration in msec */
if (vc->vc_npar >= 1)
vc->vc_bell_duration = (vc->vc_par[1] < 2000) ?
vc->vc_par[1] * HZ / 1000 : 0;
else
- vc->vc_bell_duration = DEFAULT_BELL_DURATION;
+ vc->vc_bell_duration = default_bell_duration;
break;
case 12: /* bring specified console to the front */
if (vc->vc_par[1] >= 1 && vc_cons_allocated(vc->vc_par[1] - 1))
@@ -1554,8 +1558,8 @@ static void reset_terminal(struct vc_dat
vc->vc_tab_stop[3] =
vc->vc_tab_stop[4] = 0x01010101;

- vc->vc_bell_pitch = DEFAULT_BELL_PITCH;
- vc->vc_bell_duration = DEFAULT_BELL_DURATION;
+ vc->vc_bell_pitch = default_bell_pitch;
+ vc->vc_bell_duration = default_bell_duration;

gotoxy(vc, 0, 0);
save_cur(vc);
@@ -1574,7 +1578,7 @@ static void do_con_trol(struct tty_struc
case 0:
return;
case 7:
- if (vc->vc_bell_duration)
+ if (vc_bell_enabled && vc->vc_bell_duration)
kd_mksound(vc->vc_bell_pitch, vc->vc_bell_duration);
return;
case 8:
-
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/

\
 
 \ /
  Last update: 2007-10-05 13:59    [W:0.084 / U:0.264 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site