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;
}
static int ak4642_sync(struct snd_soc_codec *codec)
{
u16 *cache = codec->reg_cache;
int i, r = 0;
for (i = 0; i < AK4642_CACHEREGNUM; i++)
r |= ak4642_write(codec, i, cache[i]);
return r;
};
static void ak4642_dai_shutdown(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) {
/* stop headphone output */
ak4642_write(codec, 0x01, 0x3b);
ak4642_write(codec, 0x01, 0x0b);
ak4642_write(codec, 0x00, 0x40);
ak4642_write(codec, 0x0e, 0x11);
ak4642_write(codec, 0x0f, 0x08);
} else {
/* stop stereo input */
ak4642_write(codec, 0x00, 0x40);
ak4642_write(codec, 0x10, 0x00);
ak4642_write(codec, 0x07, 0x01);
}
}
/*
* initialise the AK4642 driver
* register the mixer and dsp interfaces with the kernel
*/
static int ak4642_init(struct ak4642_priv *ak4642)
{
struct snd_soc_codec *codec = &ak4642->codec;
int ret = 0;
if (ak4642_codec) {
dev_err(codec->dev, "Another ak4642 is registered\n");
return -EINVAL;
}
mutex_init(&codec->mutex);
INIT_LIST_HEAD(&codec->dapm_widgets);
INIT_LIST_HEAD(&codec->dapm_paths);
codec->private_data = ak4642;
codec->name = "AK4642";
codec->owner = THIS_MODULE;
codec->read = ak4642_read_reg_cache;
codec->write = ak4642_write;
codec->dai = &ak4642_dai;
codec->num_dai = 1;
codec->hw_write = (hw_write_t)i2c_master_send;
codec->reg_cache_size = ARRAY_SIZE(ak4642_reg);
codec->reg_cache = kmemdup(ak4642_reg,
sizeof(ak4642_reg), GFP_KERNEL);
if (!codec->reg_cache)
return -ENOMEM;
ak4642_dai.dev = codec->dev;
ak4642_codec = codec;
ret = snd_soc_register_codec(codec);
if (ret) {
dev_err(codec->dev, "Failed to register codec: %d\n", ret);
goto reg_cache_err;
}
ret = snd_soc_register_dai(&ak4642_dai);
if (ret) {
dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
snd_soc_unregister_codec(codec);
goto reg_cache_err;
}
/*
* clock setting
*
* Audio I/F Format: MSB justified (ADC & DAC)
* BICK frequency at Master Mode: 64fs
* Input Master Clock Select at PLL Mode: 11.2896MHz
* MCKO: Enable
* Sampling Frequency: 44.1kHz
*
* This operation came from example code of
* "ASAHI KASEI AK4642" (japanese) manual p89.
*
* please fix-me
*/
ak4642_write(codec, 0x01, 0x08);
ak4642_write(codec, 0x04, 0x4a);
ak4642_write(codec, 0x05, 0x27);
ak4642_write(codec, 0x00, 0x40);
ak4642_write(codec, 0x01, 0x0b);
return ret;
reg_cache_err:
kfree(codec->reg_cache);
codec->reg_cache = NULL;
return ret;
}
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)
* Sampling Frequency: 44.1kHz
* Digital Volume: −8dB
* Bass Boost Level : Middle
*
* This operation came from example code of
* "ASAHI KASEI AK4642" (japanese) manual p97.
*
* Example code use 0x39, 0x79 value for 0x01 address,
* But we need MCKO (0x02) bit now
*/
ak4642_write(codec, 0x05, 0x27);
ak4642_write(codec, 0x0f, 0x09);
ak4642_write(codec, 0x0e, 0x19);
ak4642_write(codec, 0x09, 0x91);
ak4642_write(codec, 0x0c, 0x91);
ak4642_write(codec, 0x0a, 0x28);
ak4642_write(codec, 0x0d, 0x28);
ak4642_write(codec, 0x00, 0x64);
ak4642_write(codec, 0x01, 0x3b); /* + MCKO bit */
ak4642_write(codec, 0x01, 0x7b); /* + MCKO bit */
} else {
/*
* start stereo input
*
* PLL Master Mode
* Audio I/F Format:MSB justified (ADC & DAC)
* Sampling Frequency:44.1kHz
* 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, 0x05, 0x27);
ak4642_write(codec, 0x02, 0x05);
ak4642_write(codec, 0x06, 0x3c);
ak4642_write(codec, 0x08, 0xe1);
ak4642_write(codec, 0x0b, 0x00);
ak4642_write(codec, 0x07, 0x21);
ak4642_write(codec, 0x00, 0x41);
ak4642_write(codec, 0x10, 0x01);
}
return 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.
*/
ak4642_write(codec, 0x0f, 0x09);
ak4642_write(codec, 0x0e, 0x19);
ak4642_write(codec, 0x09, 0x91);
ak4642_write(codec, 0x0c, 0x91);
ak4642_write(codec, 0x00, 0x64);
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, 0x02, 0x05);
ak4642_write(codec, 0x06, 0x3c);
ak4642_write(codec, 0x08, 0xe1);
ak4642_write(codec, 0x0b, 0x00);
ak4642_write(codec, 0x07, 0x21);
ak4642_write(codec, 0x00, 0x41);
ak4642_write(codec, 0x10, 0x01);
}
return 0;
}
