*/
static int find_free_channel(struct snd_soc_codec *sn95031_codec)
{
- int ret = 0, i, value;
+ int i, value;
/* check whether ADC is enabled */
value = snd_soc_read(sn95031_codec, SN95031_ADC1CNTL1);
for (i = 0; i < SN95031_ADC_CHANLS_MAX; i++) {
value = snd_soc_read(sn95031_codec,
SN95031_ADC_CHNL_START_ADDR + i);
- if (value & SN95031_STOPBIT_MASK) {
- ret = i;
+ if (value & SN95031_STOPBIT_MASK)
break;
- }
}
- return (ret > SN95031_ADC_LOOP_MAX) ? (-EINVAL) : ret;
+ return (i == SN95031_ADC_CHANLS_MAX) ? (-EINVAL) : i;
}
/* Initialize the ADC for reading micbias values. Can sleep. */
{
int base_addr, chnl_addr;
int value;
- static int channel_index;
+ int channel_index;
/* Index of the first channel in which the stop bit is set */
channel_index = find_free_channel(sn95031_codec);
pr_debug("mic bias = %dmV\n", mic_bias);
return mic_bias;
}
-EXPORT_SYMBOL_GPL(sn95031_get_mic_bias);
/*end - adc helper functions */
static inline unsigned int sn95031_read(struct snd_soc_codec *codec,
return 0;
}
-int sn95031_pcm_hw_params(struct snd_pcm_substream *substream,
+static int sn95031_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
{
unsigned int format, rate;
.hw_params = sn95031_pcm_hw_params,
};
-struct snd_soc_dai_driver sn95031_dais[] = {
+static struct snd_soc_dai_driver sn95031_dais[] = {
{
.name = "SN95031 Headset",
.playback = {
/* codec registration */
static int sn95031_codec_probe(struct snd_soc_codec *codec)
{
- int ret;
-
pr_debug("codec_probe called\n");
- codec->dapm.bias_level = SND_SOC_BIAS_OFF;
codec->dapm.idle_bias_off = 1;
/* PCM interface config
snd_soc_add_controls(codec, sn95031_snd_controls,
ARRAY_SIZE(sn95031_snd_controls));
- ret = snd_soc_dapm_new_controls(&codec->dapm, sn95031_dapm_widgets,
- ARRAY_SIZE(sn95031_dapm_widgets));
- if (ret)
- pr_err("soc_dapm_new_control failed %d", ret);
- ret = snd_soc_dapm_add_routes(&codec->dapm, sn95031_audio_map,
- ARRAY_SIZE(sn95031_audio_map));
- if (ret)
- pr_err("soc_dapm_add_routes failed %d", ret);
-
- return ret;
+ return 0;
}
static int sn95031_codec_remove(struct snd_soc_codec *codec)
.read = sn95031_read,
.write = sn95031_write,
.set_bias_level = sn95031_set_vaud_bias,
+ .dapm_widgets = sn95031_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(sn95031_dapm_widgets),
+ .dapm_routes = sn95031_audio_map,
+ .num_dapm_routes = ARRAY_SIZE(sn95031_audio_map),
};
static int __devinit sn95031_device_probe(struct platform_device *pdev)