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

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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: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2009-03-02 14:38:35 +01:00
parent d78d7a90ad
commit 6565e4faca
1 changed files with 33 additions and 0 deletions
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33
sound/pci/hda/patch_sigmatel.c
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@ -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.