static int pcm3008_soc_remove(struct snd_soc_codec *codec)
{
struct pcm3008_setup_data *setup = codec->dev->platform_data;
pcm3008_gpio_free(setup);
return 0;
}
static int pcm3008_soc_probe(struct snd_soc_codec *codec)
{
struct pcm3008_setup_data *setup = codec->dev->platform_data;
int ret = 0;
#ifdef CONFIG_DEBUG_PRINTK
printk(KERN_INFO "PCM3008 SoC Audio Codec %s\n", PCM3008_VERSION);
#else
;
#endif
/* DEM1 DEM0 DE-EMPHASIS_MODE
* Low Low De-emphasis 44.1 kHz ON
* Low High De-emphasis OFF
* High Low De-emphasis 48 kHz ON
* High High De-emphasis 32 kHz ON
*/
/* Configure DEM0 GPIO (turning OFF DAC De-emphasis). */
ret = gpio_request(setup->dem0_pin, "codec_dem0");
if (ret == 0)
ret = gpio_direction_output(setup->dem0_pin, 1);
if (ret != 0)
goto gpio_err;
/* Configure DEM1 GPIO (turning OFF DAC De-emphasis). */
ret = gpio_request(setup->dem1_pin, "codec_dem1");
if (ret == 0)
ret = gpio_direction_output(setup->dem1_pin, 0);
if (ret != 0)
goto gpio_err;
/* Configure PDAD GPIO. */
ret = gpio_request(setup->pdad_pin, "codec_pdad");
if (ret == 0)
ret = gpio_direction_output(setup->pdad_pin, 1);
if (ret != 0)
goto gpio_err;
/* Configure PDDA GPIO. */
ret = gpio_request(setup->pdda_pin, "codec_pdda");
if (ret == 0)
ret = gpio_direction_output(setup->pdda_pin, 1);
if (ret != 0)
goto gpio_err;
return ret;
gpio_err:
pcm3008_gpio_free(setup);
return ret;
}
static int pcm3008_soc_remove(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec = socdev->card->codec;
struct pcm3008_setup_data *setup = socdev->codec_data;
if (!codec)
return 0;
pcm3008_gpio_free(setup);
snd_soc_free_pcms(socdev);
kfree(socdev->card->codec);
return 0;
}
static int pcm3008_soc_probe(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec;
struct pcm3008_setup_data *setup = socdev->codec_data;
int ret = 0;
printk(KERN_INFO "PCM3008 SoC Audio Codec %s\n", PCM3008_VERSION);
socdev->card->codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
if (!socdev->card->codec)
return -ENOMEM;
codec = socdev->card->codec;
mutex_init(&codec->mutex);
codec->name = "PCM3008";
codec->owner = THIS_MODULE;
codec->dai = &pcm3008_dai;
codec->num_dai = 1;
codec->write = NULL;
codec->read = NULL;
INIT_LIST_HEAD(&codec->dapm_widgets);
INIT_LIST_HEAD(&codec->dapm_paths);
/* Register PCMs. */
ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
if (ret < 0) {
printk(KERN_ERR "pcm3008: failed to create pcms\n");
goto pcm_err;
}
/* Register Card. */
ret = snd_soc_init_card(socdev);
if (ret < 0) {
printk(KERN_ERR "pcm3008: failed to register card\n");
goto card_err;
}
/* DEM1 DEM0 DE-EMPHASIS_MODE
* Low Low De-emphasis 44.1 kHz ON
* Low High De-emphasis OFF
* High Low De-emphasis 48 kHz ON
* High High De-emphasis 32 kHz ON
*/
/* Configure DEM0 GPIO (turning OFF DAC De-emphasis). */
ret = gpio_request(setup->dem0_pin, "codec_dem0");
if (ret == 0)
ret = gpio_direction_output(setup->dem0_pin, 1);
if (ret != 0)
goto gpio_err;
/* Configure DEM1 GPIO (turning OFF DAC De-emphasis). */
ret = gpio_request(setup->dem1_pin, "codec_dem1");
if (ret == 0)
ret = gpio_direction_output(setup->dem1_pin, 0);
if (ret != 0)
goto gpio_err;
/* Configure PDAD GPIO. */
ret = gpio_request(setup->pdad_pin, "codec_pdad");
if (ret == 0)
ret = gpio_direction_output(setup->pdad_pin, 1);
if (ret != 0)
goto gpio_err;
/* Configure PDDA GPIO. */
ret = gpio_request(setup->pdda_pin, "codec_pdda");
if (ret == 0)
ret = gpio_direction_output(setup->pdda_pin, 1);
if (ret != 0)
goto gpio_err;
return ret;
gpio_err:
pcm3008_gpio_free(setup);
card_err:
snd_soc_free_pcms(socdev);
pcm_err:
kfree(socdev->card->codec);
return ret;
}
