예제 #1
0
static int ak4642_dai_startup(struct snd_pcm_substream *substream,
			      struct snd_soc_dai *dai)
{
	int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
	struct snd_soc_codec *codec = dai->codec;

	if (is_play) {
		/*
		 * start headphone output
		 *
		 * PLL, Master Mode
		 * Audio I/F Format :MSB justified (ADC & DAC)
		 * Bass Boost Level : Middle
		 *
		 * This operation came from example code of
		 * "ASAHI KASEI AK4642" (japanese) manual p97.
		 */
		snd_soc_update_bits(codec, MD_CTL4, DACH, DACH);
		snd_soc_update_bits(codec, MD_CTL3, BST1, BST1);
		ak4642_write(codec, L_IVC, 0x91); /* volume */
		ak4642_write(codec, R_IVC, 0x91); /* volume */
		snd_soc_update_bits(codec, PW_MGMT1, PMVCM | PMMIN | PMDAC,
						     PMVCM | PMMIN | PMDAC);
		snd_soc_update_bits(codec, PW_MGMT2, PMHP_MASK,	PMHP);
		snd_soc_update_bits(codec, PW_MGMT2, HPMTN,	HPMTN);
	} else {
		/*
		 * start stereo input
		 *
		 * PLL Master Mode
		 * Audio I/F Format:MSB justified (ADC & DAC)
		 * Pre MIC AMP:+20dB
		 * MIC Power On
		 * ALC setting:Refer to Table 35
		 * ALC bit=“1”
		 *
		 * This operation came from example code of
		 * "ASAHI KASEI AK4642" (japanese) manual p94.
		 */
		ak4642_write(codec, SG_SL1, PMMP | MGAIN0);
		ak4642_write(codec, TIMER, ZTM(0x3) | WTM(0x3));
		ak4642_write(codec, ALC_CTL1, ALC | LMTH0);
		snd_soc_update_bits(codec, PW_MGMT1, PMVCM | PMADL,
						     PMVCM | PMADL);
		snd_soc_update_bits(codec, PW_MGMT3, PMADR, PMADR);
	}

	return 0;
}
예제 #2
0
static int ak4642_dai_startup(struct snd_pcm_substream *substream,
			      struct snd_soc_dai *dai)
{
	int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
	struct snd_soc_codec *codec = dai->codec;

	if (is_play) {
		snd_soc_write(codec, L_IVC, 0x91); 
		snd_soc_write(codec, R_IVC, 0x91); 
	} else {
		snd_soc_write(codec, SG_SL1, PMMP | MGAIN0);
		snd_soc_write(codec, TIMER, ZTM(0x3) | WTM(0x3));
		snd_soc_write(codec, ALC_CTL1, ALC | LMTH0);
		snd_soc_update_bits(codec, PW_MGMT1, PMADL, PMADL);
		snd_soc_update_bits(codec, PW_MGMT3, PMADR, PMADR);
	}

	return 0;
}