linux-kernel - [PATCH 2/2] ASoC: simple-card-utils: Fixup DAI sample format

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Date:   Wed, 27 Jul 2022 19:56:23 +0530
From:   Sameer Pujar <spujar@...dia.com>
To:     <broonie@...nel.org>, <lgirdwood@...il.com>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <perex@...ex.cz>,
        <tiwai@...e.com>, <kuninori.morimoto.gx@...esas.com>
CC:     <alsa-devel@...a-project.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Sameer Pujar <spujar@...dia.com>
Subject: [PATCH 2/2] ASoC: simple-card-utils: Fixup DAI sample format

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@...dia.com>
Cc: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
---
 include/sound/simple_card_utils.h     |  1 +
 sound/soc/generic/simple-card-utils.c | 12 ++++++++++++
 2 files changed, 13 insertions(+)

diff --git a/include/sound/simple_card_utils.h b/include/sound/simple_card_utils.h
index ab55f40..39ea57d 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;
+	int 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..6ce5102 100644
--- a/sound/soc/generic/simple-card-utils.c
+++ b/sound/soc/generic/simple-card-utils.c
@@ -22,6 +22,8 @@ void asoc_simple_convert_fixup(struct asoc_simple_data *data,
 						SNDRV_PCM_HW_PARAM_RATE);
 	struct snd_interval *channels = hw_param_interval(params,
 						SNDRV_PCM_HW_PARAM_CHANNELS);
+	struct snd_mask *mask = hw_param_mask(params,
+						SNDRV_PCM_HW_PARAM_FORMAT);
 
 	if (data->convert_rate)
 		rate->min =
@@ -30,6 +32,11 @@ 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 >= 0) {
+		snd_mask_none(mask);
+		snd_mask_set(mask, data->convert_sample_format);
+	}
 }
 EXPORT_SYMBOL_GPL(asoc_simple_convert_fixup);
 
@@ -49,6 +56,11 @@ 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 */
+	data->convert_sample_format = -EINVAL;
+	snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-sample-format");
+	of_property_read_u32(np, prop, &data->convert_sample_format);
 }
 EXPORT_SYMBOL_GPL(asoc_simple_parse_convert);
 
-- 
2.7.4