[ALSA] [snd-intel-hda] enable center/LFE speaker on some laptops
This patch adds LFE mixer controls for laptops with a stac9200 and a mono
speaker pin with amplifier.
Signed-off-by: Richard Fish <bigfish@asmallpond.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 8716903..bcbbe11 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -1223,6 +1223,66 @@
return 0;
}
+/* add playback controls for LFE output */
+static int stac9200_auto_create_lfe_ctls(struct hda_codec *codec,
+ struct auto_pin_cfg *cfg)
+{
+ struct sigmatel_spec *spec = codec->spec;
+ int err;
+ hda_nid_t lfe_pin = 0x0;
+ int i;
+
+ /*
+ * search speaker outs and line outs for a mono speaker pin
+ * with an amp. If one is found, add LFE controls
+ * for it.
+ */
+ for (i = 0; i < spec->autocfg.speaker_outs && lfe_pin == 0x0; i++) {
+ hda_nid_t pin = spec->autocfg.speaker_pins[i];
+ unsigned long wcaps = get_wcaps(codec, pin);
+ wcaps &= (AC_WCAP_STEREO | AC_WCAP_OUT_AMP);
+ if (wcaps == AC_WCAP_OUT_AMP)
+ /* found a mono speaker with an amp, must be lfe */
+ lfe_pin = pin;
+ }
+
+ /* if speaker_outs is 0, then speakers may be in line_outs */
+ if (lfe_pin == 0 && spec->autocfg.speaker_outs == 0) {
+ for (i = 0; i < spec->autocfg.line_outs && lfe_pin == 0x0; i++) {
+ hda_nid_t pin = spec->autocfg.line_out_pins[i];
+ unsigned long cfg;
+ cfg = snd_hda_codec_read(codec, pin, 0,
+ AC_VERB_GET_CONFIG_DEFAULT,
+ 0x00);
+ if (get_defcfg_device(cfg) == AC_JACK_SPEAKER) {
+ unsigned long wcaps = get_wcaps(codec, pin);
+ wcaps &= (AC_WCAP_STEREO | AC_WCAP_OUT_AMP);
+ if (wcaps == AC_WCAP_OUT_AMP)
+ /* found a mono speaker with an amp,
+ must be lfe */
+ lfe_pin = pin;
+ }
+ }
+ }
+
+ if (lfe_pin) {
+ err = stac92xx_add_control(spec, STAC_CTL_WIDGET_VOL,
+ "LFE Playback Volume",
+ HDA_COMPOSE_AMP_VAL(lfe_pin, 1, 0,
+ HDA_OUTPUT));
+ if (err < 0)
+ return err;
+ err = stac92xx_add_control(spec, STAC_CTL_WIDGET_MUTE,
+ "LFE Playback Switch",
+ HDA_COMPOSE_AMP_VAL(lfe_pin, 1, 0,
+ HDA_OUTPUT));
+ if (err < 0)
+ return err;
+ }
+
+ return 0;
+}
+
static int stac9200_parse_auto_config(struct hda_codec *codec)
{
struct sigmatel_spec *spec = codec->spec;
@@ -1237,6 +1297,9 @@
if ((err = stac9200_auto_create_hp_ctls(codec, &spec->autocfg)) < 0)
return err;
+ if ((err = stac9200_auto_create_lfe_ctls(codec, &spec->autocfg)) < 0)
+ return err;
+
if (spec->autocfg.dig_out_pin)
spec->multiout.dig_out_nid = 0x05;
if (spec->autocfg.dig_in_pin)
