コード例 #1
0
ファイル: patch_analog.c プロジェクト: ReneNyffenegger/linux
static int ad1988_auto_smux_enum_put(struct snd_kcontrol *kcontrol,
				     struct snd_ctl_elem_value *ucontrol)
{
	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
	struct ad198x_spec *spec = codec->spec;
	unsigned int val = ucontrol->value.enumerated.item[0];
	struct nid_path *path;
	int num_conns = snd_hda_get_num_conns(codec, 0x0b) + 1;

	if (val >= num_conns)
		return -EINVAL;
	if (spec->cur_smux == val)
		return 0;

	mutex_lock(&codec->control_mutex);
	path = snd_hda_get_path_from_idx(codec,
					 spec->smux_paths[spec->cur_smux]);
	if (path)
		snd_hda_activate_path(codec, path, false, true);
	path = snd_hda_get_path_from_idx(codec, spec->smux_paths[val]);
	if (path)
		snd_hda_activate_path(codec, path, true, true);
	spec->cur_smux = val;
	mutex_unlock(&codec->control_mutex);
	return 1;
}
コード例 #2
0
static void olpc_xo_update_mic_pins(struct hda_codec *codec)
{
	struct conexant_spec *spec = codec->spec;
	int cur_input, val;
	struct nid_path *path;

	cur_input = spec->gen.input_paths[0][spec->gen.cur_mux[0]];

	/* Set up mic pins for port-B, C and F dynamically as the recording
	 * LED is turned on/off by these pin controls
	 */
	if (!spec->dc_enable) {
		/* disable DC bias path and pin for port F */
		update_mic_pin(codec, 0x1e, 0);
		snd_hda_activate_path(codec, spec->dc_mode_path, false, false);

		/* update port B (ext mic) and C (int mic) */
		/* OLPC defers mic widget control until when capture is
		 * started because the microphone LED comes on as soon as
		 * these settings are put in place. if we did this before
		 * recording, it would give the false indication that
		 * recording is happening when it is not.
		 */
		update_mic_pin(codec, 0x1a, spec->recording ?
			       snd_hda_codec_get_pin_target(codec, 0x1a) : 0);
		update_mic_pin(codec, 0x1b, spec->recording ?
			       snd_hda_codec_get_pin_target(codec, 0x1b) : 0);
		/* enable normal mic path */
		path = snd_hda_get_path_from_idx(codec, cur_input);
		if (path)
			snd_hda_activate_path(codec, path, true, false);
	} else {
		/* disable normal mic path */
		path = snd_hda_get_path_from_idx(codec, cur_input);
		if (path)
			snd_hda_activate_path(codec, path, false, false);

		/* Even though port F is the DC input, the bias is controlled
		 * on port B.  We also leave that port as an active input (but
		 * unselected) in DC mode just in case that is necessary to
		 * make the bias setting take effect.
		 */
		if (spec->recording)
			val = olpc_xo_dc_bias.items[spec->dc_input_bias].index;
		else
			val = 0;
		update_mic_pin(codec, 0x1a, val);
		update_mic_pin(codec, 0x1b, 0);
		/* enable DC bias path and pin */
		update_mic_pin(codec, 0x1e, spec->recording ? PIN_IN : 0);
		snd_hda_activate_path(codec, spec->dc_mode_path, true, false);
	}
}
コード例 #3
0
ファイル: patch_analog.c プロジェクト: ReneNyffenegger/linux
static int ad1988_auto_init(struct hda_codec *codec)
{
	struct ad198x_spec *spec = codec->spec;
	int i, err;

	err = snd_hda_gen_init(codec);
	if (err < 0)
		return err;
	if (!spec->gen.autocfg.dig_outs)
		return 0;

	for (i = 0; i < 4; i++) {
		struct nid_path *path;
		path = snd_hda_get_path_from_idx(codec, spec->smux_paths[i]);
		if (path)
			snd_hda_activate_path(codec, path, path->active, false);
	}

	return 0;
}