示例#1
0
文件: hda_jack.c 项目: 3null/linux
/**
 * snd_hda_jack_detect_state - query pin Presence Detect status
 * @codec: the CODEC to sense
 * @nid: the pin NID to sense
 *
 * Query and return the pin's Presence Detect status, as either
 * HDA_JACK_NOT_PRESENT, HDA_JACK_PRESENT or HDA_JACK_PHANTOM.
 */
int snd_hda_jack_detect_state(struct hda_codec *codec, hda_nid_t nid)
{
	struct hda_jack_tbl *jack = snd_hda_jack_tbl_get(codec, nid);
	if (jack && jack->phantom_jack)
		return HDA_JACK_PHANTOM;
	else if (snd_hda_pin_sense(codec, nid) & AC_PINSENSE_PRESENCE)
		return HDA_JACK_PRESENT;
	else
		return HDA_JACK_NOT_PRESENT;
}
示例#2
0
static int hdmi_eld_valid(struct hda_codec *codec, hda_nid_t nid)
{
	int eldv;
	int present;

	present = snd_hda_pin_sense(codec, nid);
	eldv    = (present & AC_PINSENSE_ELDV);
	present = (present & AC_PINSENSE_PRESENCE);

#ifdef CONFIG_SND_DEBUG_VERBOSE
	printk(KERN_INFO "HDMI: sink_present = %d, eld_valid = %d\n",
			!!present, !!eldv);
#endif

	return eldv && present;
}
/**
 * snd_hda_jack_detect - query pin Presence Detect status
 * @codec: the CODEC to sense
 * @nid: the pin NID to sense
 *
 * Query and return the pin's Presence Detect status.
 */
int snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid)
{
	u32 sense = snd_hda_pin_sense(codec, nid);
	return get_jack_plug_state(sense);
}