2 files changed, 35 insertions, 14 deletions

diff --git a/include/sound/ac97_codec.h b/include/sound/ac97_codec.h
index 049edc5e6461..9c309daf492b 100644
--- a/include/sound/ac97_codec.h
+++ b/include/sound/ac97_codec.h
@@ -505,6 +505,7 @@ struct snd_ac97 {
                         unsigned short pcmreg[3];       // PCM registers
                         unsigned short codec_cfg[3];    // CODEC_CFG bits
                         unsigned char swap_mic_linein;  // AD1986/AD1986A only
+                        unsigned char lo_as_master;     /* LO as master */
                 } ad18xx;
                 unsigned int dev_flags;         /* device specific */
         } spec;
diff --git a/sound/pci/ac97/ac97_patch.c b/sound/pci/ac97/ac97_patch.c
index 2da89810ca10..1292dcee072d 100644
--- a/sound/pci/ac97/ac97_patch.c
+++ b/sound/pci/ac97/ac97_patch.c
@@ -1971,6 +1971,9 @@ static int snd_ac97_ad1888_lohpsel_get(struct snd_kcontrol *kcontrol, struct snd
 
         val = ac97->regs[AC97_AD_MISC];
         ucontrol->value.integer.value[0] = !(val & AC97_AD198X_LOSEL);
+        if (ac97->spec.ad18xx.lo_as_master)
+                ucontrol->value.integer.value[0] =
+                        !ucontrol->value.integer.value[0];
         return 0;
 }
 
@@ -1979,8 +1982,10 @@ static int snd_ac97_ad1888_lohpsel_put(struct snd_kcontrol *kcontrol, struct snd
         struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
         unsigned short val;
 
-        val = !ucontrol->value.integer.value[0]
-                ? (AC97_AD198X_LOSEL | AC97_AD198X_HPSEL) : 0;
+        val = !ucontrol->value.integer.value[0];
+        if (ac97->spec.ad18xx.lo_as_master)
+                val = !val;
+        val = val ? (AC97_AD198X_LOSEL | AC97_AD198X_HPSEL) : 0;
         return snd_ac97_update_bits(ac97, AC97_AD_MISC,
                                     AC97_AD198X_LOSEL | AC97_AD198X_HPSEL, val);
 }
@@ -2031,7 +2036,7 @@ static void ad1888_update_jacks(struct snd_ac97 *ac97)
 {
         unsigned short val = 0;
         /* clear LODIS if shared jack is to be used for Surround out */
-        if (is_shared_linein(ac97))
+        if (!ac97->spec.ad18xx.lo_as_master && is_shared_linein(ac97))
                 val |= (1 << 12);
         /* clear CLDIS if shared jack is to be used for C/LFE out */
         if (is_shared_micin(ac97))
@@ -2067,9 +2072,13 @@ static const struct snd_kcontrol_new snd_ac97_ad1888_controls[] = {
 
 static int patch_ad1888_specific(struct snd_ac97 *ac97)
 {
-        /* rename 0x04 as "Master" and 0x02 as "Master Surround" */
-        snd_ac97_rename_vol_ctl(ac97, "Master Playback", "Master Surround Playback");
-        snd_ac97_rename_vol_ctl(ac97, "Headphone Playback", "Master Playback");
+        if (!ac97->spec.ad18xx.lo_as_master) {
+                /* rename 0x04 as "Master" and 0x02 as "Master Surround" */
+                snd_ac97_rename_vol_ctl(ac97, "Master Playback",
+                                        "Master Surround Playback");
+                snd_ac97_rename_vol_ctl(ac97, "Headphone Playback",
+                                        "Master Playback");
+        }
         return patch_build_controls(ac97, snd_ac97_ad1888_controls, ARRAY_SIZE(snd_ac97_ad1888_controls));
 }
 
@@ -2088,16 +2097,27 @@ static int patch_ad1888(struct snd_ac97 * ac97)
         
         patch_ad1881(ac97);
         ac97->build_ops = &patch_ad1888_build_ops;
-        /* Switch FRONT/SURROUND LINE-OUT/HP-OUT default connection */
-        /* it seems that most vendors connect line-out connector to headphone out of AC'97 */
+
+        /*
+         * LO can be used as a real line-out on some devices,
+         * and we need to revert the front/surround mixer switches
+         */
+        if (ac97->subsystem_vendor == 0x1043 &&
+            ac97->subsystem_device == 0x1193) /* ASUS A9T laptop */
+                ac97->spec.ad18xx.lo_as_master = 1;
+
+        misc = snd_ac97_read(ac97, AC97_AD_MISC);
         /* AD-compatible mode */
         /* Stereo mutes enabled */
-        misc = snd_ac97_read(ac97, AC97_AD_MISC);
-        snd_ac97_write_cache(ac97, AC97_AD_MISC, misc |
-                             AC97_AD198X_LOSEL |
-                             AC97_AD198X_HPSEL |
-                             AC97_AD198X_MSPLT |
-                             AC97_AD198X_AC97NC);
+        misc |= AC97_AD198X_MSPLT | AC97_AD198X_AC97NC;
+        if (!ac97->spec.ad18xx.lo_as_master)
+                /* Switch FRONT/SURROUND LINE-OUT/HP-OUT default connection */
+                /* it seems that most vendors connect line-out connector to
+                 * headphone out of AC'97
+                 */
+                misc |= AC97_AD198X_LOSEL | AC97_AD198X_HPSEL;
+
+        snd_ac97_write_cache(ac97, AC97_AD_MISC, misc);
         ac97->flags |= AC97_STEREO_MUTES;
         return 0;
 }