static void amp_path_control(int mode)
{
int amp_path;
/* SPK <- HP */
if((mode & 0xf) == MM_AUDIO_OUT_SPK)
{
amp_path = AK4671_AMP_PATH_SPK;
}
/* SPK -> HP */
if((mode & 0xf) == MM_AUDIO_OUT_HP)
{
amp_path = AK4671_AMP_PATH_HP;
}
/* SPK & HP */
if(((mode & 0xf) == MM_AUDIO_OUT_SPK_HP) || ((mode & 0xf) == MM_AUDIO_OUT_RING_SPK_HP))
{
amp_path = AK4671_AMP_PATH_SPK_HP;
}
if((mode & 0xf0) == MM_AUDIO_VOICEMEMO)
{
if((mode & 0xf) == MM_AUDIO_OUT_HP)
amp_path = AK4671_AMP_PATH_HP;
else
amp_path = AK4671_AMP_PATH_SPK;
}
if (ak4671_amp_path != amp_path && ak4671_path != mode)
{
amp_set_path(amp_path);
ak4671_amp_path = amp_path;
}
}
static int ak4671_probe(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct ak4671_setup_data *setup;
struct snd_soc_codec *codec;
struct ak4671_priv *ak4671;
int ret = 0;
printk(KERN_INFO "AK4671 Audio Codec %s", AK4671_VERSION);
/* Board Specific function */
audio_init();
if (amp_init() < 0)
printk("amp init failed.\n");
audio_power(1);
ak4671_power = 1;
amp_set_path(AK4671_AMP_PATH_SPK);
mic_set_path(AK4671_MIC_PATH_MAIN);
ret = device_create_file(&pdev->dev, &dev_attr_ak4671_control);
setup = socdev->codec_data;
codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
if (codec == NULL)
return -ENOMEM;
ak4671 = kzalloc(sizeof(struct ak4671_priv), GFP_KERNEL);
if (ak4671 == NULL) {
kfree(codec);
return -ENOMEM;
}
codec->private_data = ak4671;
socdev->codec = codec;
mutex_init(&codec->mutex);
INIT_LIST_HEAD(&codec->dapm_widgets);
INIT_LIST_HEAD(&codec->dapm_paths);
ak4671_socdev = socdev;
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
if (setup->i2c_address) {
normal_i2c[0] = setup->i2c_address;
codec->hw_write = (hw_write_t)i2c_master_send;
codec->hw_read = (hw_read_t)i2c_master_recv;
ret = i2c_add_driver(&ak4671_i2c_driver);
if (ret != 0)
printk(KERN_ERR "can't add i2c driver");
}
#else
/* Add other interfaces here */
#endif
if (ret != 0) {
kfree(codec->private_data);
kfree(codec);
}
return ret;
}
int path_change(struct snd_soc_codec *codec, int to_mode, int from_mode)
{
int ret = 1;
/* Set Bias */
set_bias(codec, to_mode);
switch (to_mode) {
case MM_AUDIO_PLAYBACK_SPK :
case MM_AUDIO_PLAYBACK_HP :
switch (from_mode) {
case MM_AUDIO_VOICEMEMO_MAIN :
case MM_AUDIO_VOICEMEMO_SUB :
case MM_AUDIO_VOICEMEMO_EAR :
P("VOICEMEMO->PLAYBACK");
set_codec_gain(codec, to_mode);
if (to_mode == MM_AUDIO_PLAYBACK_SPK)
amp_set_path(AK4671_AMP_PATH_SPK);
else
amp_set_path(AK4671_AMP_PATH_HP);
codec->write(codec, 0x00, 0xC1); // DAC Enable, ADC Disable, MicAMP Disable
break;
default :
ret = -1;
break;
}
break;
case MM_AUDIO_PLAYBACK_RCV :
case MM_AUDIO_PLAYBACK_SPK_HP :
case MM_AUDIO_PLAYBACK_RING_SPK_HP :
case MM_AUDIO_PLAYBACK_BT :
case MM_AUDIO_VOICECALL_RCV :
case MM_AUDIO_VOICECALL_SPK :
case MM_AUDIO_VOICECALL_HP :
case MM_AUDIO_VOICECALL_BT :
ret = -1;
break;
case MM_AUDIO_VOICEMEMO_MAIN :
switch (from_mode) {
case MM_AUDIO_PLAYBACK_SPK :
P("PLAYBACK_SPK->VOICEMEMO_MAIN");
mic_set_path(AK4671_MIC_PATH_MAIN);
set_codec_gain(codec, to_mode);
codec->write(codec, 0x04, 0x14); // => MIC-AMP Lch=IN1+/-
codec->write(codec, 0x00, 0xD5); // D/A power-up
break;
case MM_AUDIO_VOICEMEMO_EAR :
P("VOICEMEMO_EAR->VOICEMEMO_MAIN");
mic_set_path(AK4671_MIC_PATH_MAIN);
set_codec_gain(codec, to_mode);
codec->write(codec, 0x04, 0x14); // => MIC-AMP Lch=IN1+/-
amp_set_path(AK4671_AMP_PATH_SPK);
break;
default :
ret = -1;
break;
}
break;
case MM_AUDIO_VOICEMEMO_SUB :
switch (from_mode) {
case MM_AUDIO_PLAYBACK_SPK :
P("PLAYBACK_SPK->VOICEMEMO_SUB");
mic_set_path(AK4671_MIC_PATH_MAIN);
set_codec_gain(codec, to_mode);
codec->write(codec, 0x04, 0x14); // => MIC-AMP Lch=IN1+/-
codec->write(codec, 0x00, 0xD5); // D/A power-up
break;
case MM_AUDIO_VOICEMEMO_EAR :
P("VOICEMEMO_EAR->VOICEMEMO_MAIN");
mic_set_path(AK4671_MIC_PATH_MAIN);
set_codec_gain(codec, to_mode);
codec->write(codec, 0x04, 0x14); // => MIC-AMP Lch=IN1+/-
amp_set_path(AK4671_AMP_PATH_SPK);
break;
default :
ret = -1;
break;
}
break;
case MM_AUDIO_VOICEMEMO_EAR :
switch (from_mode) {
case MM_AUDIO_PLAYBACK_HP :
case MM_AUDIO_VOICEMEMO_MAIN :
case MM_AUDIO_VOICEMEMO_SUB :
P("VOICEMEMO_MAIN&SUB&PLAYBACK_HP->VOICEMEMO_EAR");
if (from_mode != MM_AUDIO_PLAYBACK_HP)
amp_set_path(AK4671_AMP_PATH_HP);
if (get_headset_status())
{
P("VOICEMEMO_4POLE_EAR");
set_codec_gain(codec, to_mode);
codec->write(codec, 0x04, 0x42); // => MIC-AMP Lch=IN3+/-
codec->write(codec, 0x00, 0xD5); // D/A power-up
}
else
{
P("VOICEMEMO_3POLE_EAR");
mic_set_path(AK4671_MIC_PATH_MAIN);
to_mode = MM_AUDIO_VOICEMEMO_MAIN;
set_codec_gain(codec, to_mode);
codec->write(codec, 0x04, 0x14); // => MIC-AMP Lch=IN1+/-
codec->write(codec, 0x00, 0xD5); // D/A power-up
}
break;
default :
ret = -1;
break;
}
break;
default :
ret = -1;
break;
}
return ret;
}
