[ALSA] Enable stereo line input for TAS codec

Despite what the data sheet says in one place, to get stereo input
from input A (line in), we have to clear the 'input B monaural' bit in
the ACR.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 9 insertions, 4 deletions

diff --git a/sound/aoa/codecs/snd-aoa-codec-tas.c b/sound/aoa/codecs/snd-aoa-codec-tas.c
index 2ef55a17917c..9de8485ba3f5 100644
--- a/sound/aoa/codecs/snd-aoa-codec-tas.c
+++ b/sound/aoa/codecs/snd-aoa-codec-tas.c
@@ -514,9 +514,15 @@ static int tas_snd_capture_source_put(struct snd_kcontrol *kcontrol,
         mutex_lock(&tas->mtx);
         oldacr = tas->acr;
 
-        tas->acr &= ~TAS_ACR_INPUT_B;
+        /*
+         * Despite what the data sheet says in one place, the
+         * TAS_ACR_B_MONAUREAL bit forces mono output even when
+         * input A (line in) is selected.
+         */
+        tas->acr &= ~(TAS_ACR_INPUT_B | TAS_ACR_B_MONAUREAL);
         if (ucontrol->value.enumerated.item[0])
-                tas->acr |= TAS_ACR_INPUT_B;
+                tas->acr |= TAS_ACR_INPUT_B | TAS_ACR_B_MONAUREAL |
+                      TAS_ACR_B_MON_SEL_RIGHT;
         if (oldacr == tas->acr) {
                 mutex_unlock(&tas->mtx);
                 return 0;
@@ -686,8 +692,7 @@ static int tas_reset_init(struct tas *tas)
         if (tas_write_reg(tas, TAS_REG_MCS, 1, &tmp))
                 goto outerr;
 
-        tas->acr |= TAS_ACR_ANALOG_PDOWN | TAS_ACR_B_MONAUREAL |
-                TAS_ACR_B_MON_SEL_RIGHT;
+        tas->acr |= TAS_ACR_ANALOG_PDOWN;
         if (tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr))
                 goto outerr;