ALSA: hda: make a STAC_DELL_EQ option

Add support for explicitly enabling the EQ distortion hack for
systems without software biquad support.

Signed-off-by: Matthew Ranostay <mranostay@embeddedalley.com>
Cc: stable@kernel.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index df9b0bc..e608591 100644 (file)
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -69,6 +69,7 @@ enum {
 enum {
        STAC_92HD73XX_REF,
        STAC_DELL_M6,
+       STAC_DELL_EQ,
        STAC_92HD73XX_MODELS
 };
 
@@ -773,9 +774,7 @@ static struct hda_verb dell_eq_core_init[] = {
 };
 
 static struct hda_verb dell_m6_core_init[] = {
-       /* set master volume to max value without distortion
-        * and direct control */
-       { 0x1f, AC_VERB_SET_VOLUME_KNOB_CONTROL, 0xec},
+       { 0x1f, AC_VERB_SET_VOLUME_KNOB_CONTROL, 0xff},
        /* setup audio connections */
        { 0x0d, AC_VERB_SET_CONNECT_SEL, 0x00},
        { 0x0a, AC_VERB_SET_CONNECT_SEL, 0x01},
@@ -1600,11 +1599,13 @@ static unsigned int dell_m6_pin_configs[13] = {
 static unsigned int *stac92hd73xx_brd_tbl[STAC_92HD73XX_MODELS] = {
        [STAC_92HD73XX_REF]     = ref92hd73xx_pin_configs,
        [STAC_DELL_M6]  = dell_m6_pin_configs,
+       [STAC_DELL_EQ]  = dell_m6_pin_configs,
 };
 
 static const char *stac92hd73xx_models[STAC_92HD73XX_MODELS] = {
        [STAC_92HD73XX_REF] = "ref",
        [STAC_DELL_M6] = "dell-m6",
+       [STAC_DELL_EQ] = "dell-eq",
 };
 
 static struct snd_pci_quirk stac92hd73xx_cfg_tbl[] = {
@@ -4131,12 +4132,17 @@ again:
                        sizeof(stac92hd73xx_dmux));
 
        switch (spec->board_config) {
-       case STAC_DELL_M6:
+       case STAC_DELL_EQ:
                spec->init = dell_eq_core_init;
+               /* fallthru */
+       case STAC_DELL_M6:
                spec->num_smuxes = 0;
                spec->mixer = &stac92hd73xx_6ch_mixer[DELL_M6_MIXER];
                spec->amp_nids = &stac92hd73xx_amp_nids[DELL_M6_AMP];
                spec->num_amps = 1;
+
+               if (!spec->init)
+                       spec->init = dell_m6_core_init;
                switch (codec->subsystem_id) {
                case 0x1028025e: /* Analog Mics */
                case 0x1028025f:
@@ -4146,8 +4152,6 @@ again:
                        break;
                case 0x10280271: /* Digital Mics */
                case 0x10280272:
-                       spec->init = dell_m6_core_init;
-                       /* fall-through */
                case 0x10280254:
                case 0x10280255:
                        stac92xx_set_config_reg(codec, 0x13, 0x90A60160);