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Commit 6565e4fa authored by Takashi Iwai's avatar Takashi Iwai
Browse files

ALSA: hda - Add more hint options for IDT/Sigmatel codecs 



Allow more options to be set/reset via hwdep hint entry.
hp_detect, gpio_mask, gpio_dir, gpio_data, eapd_mask and eapd_switch
can be checked.

For example, to disable hp_detect on the fly,
	# echo "hp_detect=0" > /sys/class/sound/hwC0D0/hints

Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent d78d7a90

sound/pci/hda/patch_sigmatel.c

+33 −0
Original line number Diff line number Diff line
@@ -3949,6 +3949,36 @@ static void stac92xx_power_down(struct hda_codec *codec) 
static void stac_toggle_power_map(struct hda_codec *codec, hda_nid_t nid,

				  int enable);



/* override some hints from the hwdep entry */

static void stac_store_hints(struct hda_codec *codec)

{

	struct sigmatel_spec *spec = codec->spec;

	const char *p;

	int val;



	val = snd_hda_get_bool_hint(codec, "hp_detect");

	if (val >= 0)

		spec->hp_detect = val;

	p = snd_hda_get_hint(codec, "gpio_mask");

	if (p) {

		spec->gpio_mask = simple_strtoul(p, NULL, 0);

		spec->eapd_mask = spec->gpio_dir = spec->gpio_data =

			spec->gpio_mask;

	}

	p = snd_hda_get_hint(codec, "gpio_dir");

	if (p)

		spec->gpio_dir = simple_strtoul(p, NULL, 0) & spec->gpio_mask;

	p = snd_hda_get_hint(codec, "gpio_data");

	if (p)

		spec->gpio_data = simple_strtoul(p, NULL, 0) & spec->gpio_mask;

	p = snd_hda_get_hint(codec, "eapd_mask");

	if (p)

		spec->eapd_mask = simple_strtoul(p, NULL, 0) & spec->gpio_mask;

	val = snd_hda_get_bool_hint(codec, "eapd_switch");

	if (val >= 0)

		spec->eapd_switch = val;

}



static int stac92xx_init(struct hda_codec *codec)

{

	struct sigmatel_spec *spec = codec->spec;
@@ -3965,6 +3995,9 @@ static int stac92xx_init(struct hda_codec *codec) 
				spec->adc_nids[i], 0,

				AC_VERB_SET_POWER_STATE, AC_PWRST_D3);



	/* override some hints */

	stac_store_hints(codec);



	/* set up GPIO */

	gpio = spec->gpio_data;

	/* turn on EAPD statically when spec->eapd_switch isn't set.