diff options
| -rw-r--r-- | include/sound/simple_card_utils.h | 10 | ||||
| -rw-r--r-- | sound/soc/generic/simple-card-utils.c | 40 |
2 files changed, 50 insertions, 0 deletions
diff --git a/include/sound/simple_card_utils.h b/include/sound/simple_card_utils.h index 2679312228b3..cc318ccd6a2d 100644 --- a/include/sound/simple_card_utils.h +++ b/include/sound/simple_card_utils.h @@ -22,6 +22,11 @@ struct asoc_simple_dai { struct clk *clk; }; +struct asoc_simple_card_data { + u32 convert_rate; + u32 convert_channels; +}; + int asoc_simple_card_parse_daifmt(struct device *dev, struct device_node *node, struct device_node *codec, @@ -90,4 +95,9 @@ void asoc_simple_card_canonicalize_cpu(struct snd_soc_dai_link *dai_link, int asoc_simple_card_clean_reference(struct snd_soc_card *card); +void asoc_simple_card_convert_fixup(struct asoc_simple_card_data *data, + struct snd_pcm_hw_params *params); +void asoc_simple_card_parse_convert(struct device *dev, char *prefix, + struct asoc_simple_card_data *data); + #endif /* __SIMPLE_CARD_UTILS_H */ diff --git a/sound/soc/generic/simple-card-utils.c b/sound/soc/generic/simple-card-utils.c index 2ad7633292bf..948a18842e64 100644 --- a/sound/soc/generic/simple-card-utils.c +++ b/sound/soc/generic/simple-card-utils.c @@ -13,6 +13,46 @@ #include <linux/of_graph.h> #include <sound/simple_card_utils.h> +void asoc_simple_card_convert_fixup(struct asoc_simple_card_data *data, + struct snd_pcm_hw_params *params) +{ + struct snd_interval *rate = hw_param_interval(params, + SNDRV_PCM_HW_PARAM_RATE); + struct snd_interval *channels = hw_param_interval(params, + SNDRV_PCM_HW_PARAM_CHANNELS); + + if (data->convert_rate) + rate->min = + rate->max = data->convert_rate; + + if (data->convert_channels) + channels->min = + channels->max = data->convert_channels; +} +EXPORT_SYMBOL_GPL(asoc_simple_card_convert_fixup); + +void asoc_simple_card_parse_convert(struct device *dev, char *prefix, + struct asoc_simple_card_data *data) +{ + struct device_node *np = dev->of_node; + char prop[128]; + + if (!prefix) + prefix = ""; + + /* sampling rate convert */ + snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-rate"); + of_property_read_u32(np, prop, &data->convert_rate); + + /* channels transfer */ + snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-channels"); + of_property_read_u32(np, prop, &data->convert_channels); + + dev_dbg(dev, "convert_rate %d\n", data->convert_rate); + dev_dbg(dev, "convert_channels %d\n", data->convert_channels); +} +EXPORT_SYMBOL_GPL(asoc_simple_card_parse_convert); + int asoc_simple_card_parse_daifmt(struct device *dev, struct device_node *node, struct device_node *codec, |