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Commit 160ea0dc authored by Richard Fish's avatar Richard Fish Committed by Jaroslav Kysela
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[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: default avatarRichard Fish <bigfish@asmallpond.org>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarJaroslav Kysela <perex@suse.cz>
parent 0b593972

sound/pci/hda/patch_sigmatel.c

+63 −0
Original line number Diff line number Diff line
@@ -1223,6 +1223,66 @@ static int stac9200_auto_create_hp_ctls(struct hda_codec *codec, 
	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 @@ static int stac9200_parse_auto_config(struct hda_codec *codec) 
	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)