ALSA: hda - Fix mute sound with STAC9227/9228 codecs

On FSC laptops, the sound gets muted gradually when the volume is chnaged.
This is due to the wrong volume-knob widget setup.  The delta bit (bit 7)
shouldn't be set for these devices.

This patch adds a new quirk to set the value 0x7f to the widget 0x24
instead of 0xff.

Reference: Novell bnc#546006
	http://bugzilla.novell.com/show_bug.cgi?id=546006

Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/Documentation/sound/alsa/HD-Audio-Models.txt b/Documentation/sound/alsa/HD-Audio-Models.txt
index a2643cf..4bf953b 100644 (file)
--- a/Documentation/sound/alsa/HD-Audio-Models.txt
+++ b/Documentation/sound/alsa/HD-Audio-Models.txt
@@ -359,6 +359,7 @@ STAC9227/9228/9229/927x
   5stack-no-fp D965 5stack without front panel
   dell-3stack  Dell Dimension E520
   dell-bios    Fixes with Dell BIOS setup
+  volknob      Fixes with volume-knob widget 0x24
   auto         BIOS setup (default)
 
 STAC92HD71B*

diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index a9b2682..7573682 100644 (file)
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -158,6 +158,7 @@ enum {
        STAC_D965_5ST_NO_FP,
        STAC_DELL_3ST,
        STAC_DELL_BIOS,
+       STAC_927X_VOLKNOB,
        STAC_927X_MODELS
 };
 
@@ -915,6 +916,14 @@ static struct hda_verb stac927x_core_init[] = {
        {}
 };
 
+static struct hda_verb stac927x_volknob_core_init[] = {
+       /* don't set delta bit */
+       {0x24, AC_VERB_SET_VOLUME_KNOB_CONTROL, 0x7f},
+       /* enable analog pc beep path */
+       {0x01, AC_VERB_SET_DIGI_CONVERT_2, 1 << 5},
+       {}
+};
+
 static struct hda_verb stac9205_core_init[] = {
        /* set master volume and direct control */      
        { 0x24, AC_VERB_SET_VOLUME_KNOB_CONTROL, 0xff},
@@ -1999,6 +2008,7 @@ static unsigned int *stac927x_brd_tbl[STAC_927X_MODELS] = {
        [STAC_D965_5ST_NO_FP]  = d965_5st_no_fp_pin_configs,
        [STAC_DELL_3ST]  = dell_3st_pin_configs,
        [STAC_DELL_BIOS] = NULL,
+       [STAC_927X_VOLKNOB] = NULL,
 };
 
 static const char *stac927x_models[STAC_927X_MODELS] = {
@@ -2010,6 +2020,7 @@ static const char *stac927x_models[STAC_927X_MODELS] = {
        [STAC_D965_5ST_NO_FP]   = "5stack-no-fp",
        [STAC_DELL_3ST]         = "dell-3stack",
        [STAC_DELL_BIOS]        = "dell-bios",
+       [STAC_927X_VOLKNOB]     = "volknob",
 };
 
 static struct snd_pci_quirk stac927x_cfg_tbl[] = {
@@ -2045,6 +2056,8 @@ static struct snd_pci_quirk stac927x_cfg_tbl[] = {
                           "Intel D965", STAC_D965_5ST),
        SND_PCI_QUIRK_MASK(PCI_VENDOR_ID_INTEL, 0xff00, 0x2500,
                           "Intel D965", STAC_D965_5ST),
+       /* volume-knob fixes */
+       SND_PCI_QUIRK_VENDOR(0x10cf, "FSC", STAC_927X_VOLKNOB),
        {} /* terminator */
 };
 
@@ -5616,6 +5629,10 @@ static int patch_stac927x(struct hda_codec *codec)
                spec->dmux_nids = stac927x_dmux_nids;
                spec->num_dmuxes = ARRAY_SIZE(stac927x_dmux_nids);
                break;
+       case STAC_927X_VOLKNOB:
+               spec->num_dmics = 0;
+               spec->init = stac927x_volknob_core_init;
+               break;
        default:
                spec->num_dmics = 0;
                spec->init = stac927x_core_init;