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ASoC: simple-card-utils: add asoc_simple_card_convert_fixup()

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Current simple/audio scu card drivers are supporting same
convert-rate/convert-channels on DT, but doesn't use same function
for it.
Encapsulation is one of simple card util's purpose.
Let's add asoc_simple_card_parse_convert/asoc_simple_card_convert_fixup

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kuninori Morimoto 2017-06-15 00:24:09 +00:00 committed by Mark Brown
parent 616c3b15f5
commit 13bb1cc0ad
2 changed files with 50 additions and 0 deletions
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10
include/sound/simple_card_utils.h
View File

@ -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 */

40
sound/soc/generic/simple-card-utils.c
View File

@ -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,