diff options
| author | Andres Salomon | 2008-11-06 16:47:05 -0500 |
|---|---|---|
| committer | Takashi Iwai | 2008-12-10 17:14:42 +0100 |
| commit | 1e2232bc70b32f90109d678d1faccf6f50ebba80 (patch) | |
| tree | 80ea678625eb4d041c90da63b3dbbcd2dee7b464 /sound/pci | |
| parent | b91254e75c3ec4f371ce1849672a95a929d99861 (diff) | |
ALSA: cs5535audio: decouple HPF from V_REFOUT in OLPC code
We shouldn't be touching V_REFOUT when we toggle HPF/analog input, so just
drop that code.
Signed-off-by: Andres Salomon <dilinger@debian.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
| -rw-r--r-- | sound/pci/cs5535audio/cs5535audio_olpc.c | 25 |
1 files changed, 4 insertions, 21 deletions
diff --git a/sound/pci/cs5535audio/cs5535audio_olpc.c b/sound/pci/cs5535audio/cs5535audio_olpc.c index 2bd6588b4353..f20e74182725 100644 --- a/sound/pci/cs5535audio/cs5535audio_olpc.c +++ b/sound/pci/cs5535audio/cs5535audio_olpc.c @@ -30,18 +30,11 @@ static int snd_cs5535audio_ctl_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct cs5535audio *cs5535au = snd_kcontrol_chip(kcontrol); - u16 reg1, reg2; + u8 val; - /* if either AD1888 VRef Bias and High Pass Filter are enabled - or the EC is not in analog mode then flag as not in analog mode. - No EC command to read current analog state so we cache that. */ - reg1 = snd_ac97_read(cs5535au->ac97, AC97_AD_MISC); - reg2 = snd_ac97_read(cs5535au->ac97, AC97_AD_TEST2); - - if ((reg1 & AD1888_VREFOUT_EN_BIT) && (reg2 & AD1888_HPF_EN_BIT)) - ucontrol->value.integer.value[0] = 1; - else - ucontrol->value.integer.value[0] = 0; + val = snd_ac97_read(cs5535au->ac97, AC97_AD_TEST2); + val >>= AC97_AD_HPFD_SHIFT; + ucontrol->value.integer.value[0] = val & 0x1; return 0; } @@ -57,16 +50,6 @@ static int snd_cs5535audio_ctl_put(struct snd_kcontrol *kcontrol, /* value is 1 if analog input is desired */ value = ucontrol->value.integer.value[0]; - /* sets High Z on VREF Bias if 1 */ - if (value) - err = snd_ac97_update_bits(ac97, AC97_AD_MISC, - AD1888_VREFOUT_EN_BIT, AD1888_VREFOUT_EN_BIT); - else - err = snd_ac97_update_bits(ac97, AC97_AD_MISC, - AD1888_VREFOUT_EN_BIT, 0); - if (err < 0) - snd_printk(KERN_ERR "Error updating AD_MISC %d\n", err); - /* turns off High Pass Filter if 1 */ if (value) err = snd_ac97_update_bits(ac97, AC97_AD_TEST2, |