commit 80b8d5d6bc0000c6e499260883cfc95e645f49d1
author Paul Mackerras <paulus@samba.org> Tue Oct 31 15:24:45 2006 +0100
committer Jaroslav Kysela <perex@suse.cz> Tue Nov 28 13:46:34 2006 +0100
tree b3248f158a74179b039bc29455a35c5c0fe4fc1e
parent ac5d1a7d253f3c02d1e5c93edfa26e81466ec71e

[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>

sound/aoa/codecs/snd-aoa-codec-tas.c

diff --git a/sound/aoa/codecs/snd-aoa-codec-tas.c b/sound/aoa/codecs/snd-aoa-codec-tas.c
index 2ef55a1..9de8485b 100644
--- a/sound/aoa/codecs/snd-aoa-codec-tas.c
+++ b/sound/aoa/codecs/snd-aoa-codec-tas.c
@@ -514,9 +514,15 @@
 	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 @@
 	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;