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ALSA: hda_intel: Digital PC Beep - change behaviour for input layer

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Original implementation was keeping registered input device for SND_BEEP
and SND_TONE events all time. This patch changes this behaviour:
If digital PC Beep is turned off using universal control switch,
the input device is unregistered.

Explanation: The kd_mksound() send SND_BEEP and SND_TONE only to last
registered device acceping those events. It means that the HDA Intel
audio driver blocks also the internal PC Speaker device (pcspkr.c
driver) even if the HDA Beep is muted. The user can easy disable
all beeps using 'setterm -blength 0' or 'xset b off' command.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Jaroslav Kysela
2009-10-21 14:48:23 +02:00
committed by Takashi Iwai
parent fe705ab152
commit 123c07aedd
7 changed files with 111 additions and 28 deletions
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12
sound/pci/hda/hda_codec.c
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@@ -30,6 +30,7 @@
#include <sound/tlv.h>
#include <sound/initval.h>
#include "hda_local.h"
#include "hda_beep.h"
#include <sound/hda_hwdep.h>
/*
@@ -1734,6 +1735,17 @@ int snd_hda_mixer_amp_switch_put(struct snd_kcontrol *kcontrol,
}
EXPORT_SYMBOL_HDA(snd_hda_mixer_amp_switch_put);
int snd_hda_mixer_amp_switch_put_beep(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
long *valp = ucontrol->value.integer.value;
snd_hda_enable_beep_device(codec, *valp);
return snd_hda_mixer_amp_switch_put(kcontrol, ucontrol);
}
EXPORT_SYMBOL_HDA(snd_hda_mixer_amp_switch_put_beep);
/*
* bound volume controls
*