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ALSA: emu10k1 - Add dB range to Bass and Treble for SB Live!

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As the "Wave", "Wave Surround" or "Front" Playback Volume must be
changed to 70% (i.e. -12 dB) so that distortion won't occur when
increase Bass and Treble from 50% to 100%, so the maximum gain in
Bass and Treble are +12 dB.

Signed-off-by: Raymond Yau <superquad.vortex2@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Raymond Yau 2011-05-20 14:32:04 +08:00 committed by Takashi Iwai
parent df1fe13289
commit bfe9fc8aeb
1 changed files with 5 additions and 0 deletions
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5
sound/pci/emu10k1/emufx.c
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@ -303,6 +303,9 @@ static const u32 db_table[101] = {
static const DECLARE_TLV_DB_SCALE(snd_emu10k1_db_scale1, -4000, 40, 1);
static const DECLARE_TLV_DB_LINEAR(snd_emu10k1_db_linear, TLV_DB_GAIN_MUTE, 0);
/* EMU10K1 bass/treble db gain */
static const DECLARE_TLV_DB_SCALE(snd_emu10k1_bass_treble_db_scale, -1200, 60, 0);
static const u32 onoff_table[2] = {
0x00000000, 0x00000001
};
@ -2163,6 +2166,7 @@ static int __devinit _snd_emu10k1_init_efx(struct snd_emu10k1 *emu)
ctl->min = 0;
ctl->max = 40;
ctl->value[0] = ctl->value[1] = 20;
ctl->tlv = snd_emu10k1_bass_treble_db_scale;
ctl->translation = EMU10K1_GPR_TRANSLATION_BASS;
ctl = &controls[i + 1];
ctl->id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
@ -2172,6 +2176,7 @@ static int __devinit _snd_emu10k1_init_efx(struct snd_emu10k1 *emu)
ctl->min = 0;
ctl->max = 40;
ctl->value[0] = ctl->value[1] = 20;
ctl->tlv = snd_emu10k1_bass_treble_db_scale;
ctl->translation = EMU10K1_GPR_TRANSLATION_TREBLE;
#define BASS_GPR 0x8c