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Subject[PATCH v2 3/3] ASoC: simple-card-utils: Fixup DAI sample format
Date
Parse "convert-sample-format" DT binding and fixup the sample format
as applicable. This is similar to the existing "convert-channels" and
"convert-rate" properties for channels and rate fixup respectively.

Signed-off-by: Sameer Pujar <spujar@nvidia.com>
Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
include/sound/simple_card_utils.h | 1 +
sound/soc/generic/simple-card-utils.c | 34 ++++++++++++++++++++++++++++++++++
2 files changed, 35 insertions(+)

diff --git a/include/sound/simple_card_utils.h b/include/sound/simple_card_utils.h
index ab55f40..a0b827f 100644
--- a/include/sound/simple_card_utils.h
+++ b/include/sound/simple_card_utils.h
@@ -39,6 +39,7 @@ struct asoc_simple_dai {
struct asoc_simple_data {
u32 convert_rate;
u32 convert_channels;
+ const char *convert_sample_format;
};

struct asoc_simple_jack {
diff --git a/sound/soc/generic/simple-card-utils.c b/sound/soc/generic/simple-card-utils.c
index 4a29e31..1b201dd 100644
--- a/sound/soc/generic/simple-card-utils.c
+++ b/sound/soc/generic/simple-card-utils.c
@@ -15,6 +15,33 @@
#include <sound/pcm_params.h>
#include <sound/simple_card_utils.h>

+static void asoc_simple_fixup_sample_fmt(struct asoc_simple_data *data,
+ struct snd_pcm_hw_params *params)
+{
+ int i;
+ struct snd_mask *mask = hw_param_mask(params,
+ SNDRV_PCM_HW_PARAM_FORMAT);
+ struct {
+ char *fmt;
+ u32 val;
+ } of_sample_fmt_table[] = {
+ { "s8", SNDRV_PCM_FORMAT_S8},
+ { "s16_le", SNDRV_PCM_FORMAT_S16_LE},
+ { "s24_le", SNDRV_PCM_FORMAT_S24_LE},
+ { "s24_3le", SNDRV_PCM_FORMAT_S24_3LE},
+ { "s32_le", SNDRV_PCM_FORMAT_S32_LE},
+ };
+
+ for (i = 0; i < ARRAY_SIZE(of_sample_fmt_table); i++) {
+ if (!strcmp(data->convert_sample_format,
+ of_sample_fmt_table[i].fmt)) {
+ snd_mask_none(mask);
+ snd_mask_set(mask, of_sample_fmt_table[i].val);
+ break;
+ }
+ }
+}
+
void asoc_simple_convert_fixup(struct asoc_simple_data *data,
struct snd_pcm_hw_params *params)
{
@@ -30,6 +57,9 @@ void asoc_simple_convert_fixup(struct asoc_simple_data *data,
if (data->convert_channels)
channels->min =
channels->max = data->convert_channels;
+
+ if (data->convert_sample_format)
+ asoc_simple_fixup_sample_fmt(data, params);
}
EXPORT_SYMBOL_GPL(asoc_simple_convert_fixup);

@@ -49,6 +79,10 @@ void asoc_simple_parse_convert(struct device_node *np,
/* channels transfer */
snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-channels");
of_property_read_u32(np, prop, &data->convert_channels);
+
+ /* convert sample format */
+ snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-sample-format");
+ of_property_read_string(np, prop, &data->convert_sample_format);
}
EXPORT_SYMBOL_GPL(asoc_simple_parse_convert);

--
2.7.4
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