1 files changed, 78 insertions, 0 deletions

diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 82ebeb9544fe..93fa59cc60ef 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -5326,6 +5326,82 @@ again:
         return 0;
 }
 
+static int stac92hd83xxx_set_system_btl_amp(struct hda_codec *codec)
+{
+        if (codec->vendor_id != 0x111d7605 &&
+            codec->vendor_id != 0x111d76d1)
+                return 0;
+
+        switch (codec->subsystem_id) {
+        case 0x103c1618:
+        case 0x103c1619:
+        case 0x103c161a:
+        case 0x103c161b:
+        case 0x103c161c:
+        case 0x103c161d:
+        case 0x103c161e:
+        case 0x103c161f:
+        case 0x103c1620:
+        case 0x103c1621:
+        case 0x103c1622:
+        case 0x103c1623:
+
+        case 0x103c162a:
+        case 0x103c162b:
+
+        case 0x103c1630:
+        case 0x103c1631:
+
+        case 0x103c1633:
+
+        case 0x103c1635:
+
+        case 0x103c164f:
+
+        case 0x103c1676:
+        case 0x103c1677:
+        case 0x103c1678:
+        case 0x103c1679:
+        case 0x103c167a:
+        case 0x103c167b:
+        case 0x103c167c:
+        case 0x103c167d:
+        case 0x103c167e:
+        case 0x103c167f:
+        case 0x103c1680:
+        case 0x103c1681:
+        case 0x103c1682:
+        case 0x103c1683:
+        case 0x103c1684:
+        case 0x103c1685:
+        case 0x103c1686:
+        case 0x103c1687:
+        case 0x103c1688:
+        case 0x103c1689:
+        case 0x103c168a:
+        case 0x103c168b:
+        case 0x103c168c:
+        case 0x103c168d:
+        case 0x103c168e:
+        case 0x103c168f:
+        case 0x103c1690:
+        case 0x103c1691:
+        case 0x103c1692:
+
+        case 0x103c3587:
+        case 0x103c3588:
+        case 0x103c3589:
+        case 0x103c358a:
+
+        case 0x103c3667:
+        case 0x103c3668:
+                /* set BTL amp level to 13.43dB for louder speaker output */
+                return snd_hda_codec_write_cache(codec, codec->afg, 0,
+                                                 0x7F4, 0x14);
+        }
+        return 0;
+}
+
 static int patch_stac92hd83xxx(struct hda_codec *codec)
 {
         struct sigmatel_spec *spec;
@@ -5452,6 +5528,8 @@ again:
                         AC_VERB_SET_CONNECT_SEL, num_dacs);
         }
 
+        stac92hd83xxx_set_system_btl_amp(codec);
+
         codec->proc_widget_hook = stac92hd_proc_hook;
 
         return 0;