linux-kernel - [RESEND] ASoC: cs43130: Allow configuration of bit clock and frame inversion

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Date:   Fri, 24 Nov 2023 09:50:30 +0000
From:   Maciej Strozek <mstrozek@...nsource.cirrus.com>
To:     Mark Brown <broonie@...nel.org>
CC:     James Schulman <james.schulman@...rus.com>,
        David Rhodes <david.rhodes@...rus.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        <alsa-devel@...a-project.org>, <patches@...nsource.cirrus.com>,
        <linux-sound@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Maciej Strozek <mstrozek@...nsource.cirrus.com>
Subject: [RESEND] ASoC: cs43130: Allow configuration of bit clock and frame inversion

Signed-off-by: Maciej Strozek <mstrozek@...nsource.cirrus.com>
---
Resending patch which previously broke x86 allmodconfig [1], now rebased on
for-next branch

[1]: https://lore.kernel.org/all/ZVfLMIbCpShVAYBf@finisterre.sirena.org.uk/

 sound/soc/codecs/cs43130.c | 42 ++++++++++++++++++++++++++++++++++++--
 sound/soc/codecs/cs43130.h |  1 +
 2 files changed, 41 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/cs43130.c b/sound/soc/codecs/cs43130.c
index 4f16baf4eafb..0f3ead84665f 100644
--- a/sound/soc/codecs/cs43130.c
+++ b/sound/soc/codecs/cs43130.c
@@ -620,6 +620,27 @@ static int cs43130_set_sp_fmt(int dai_id, unsigned int bitwidth_sclk,
 		return -EINVAL;
 	}

+	switch (cs43130->dais[dai_id].dai_invert) {
+	case SND_SOC_DAIFMT_NB_NF:
+		sclk_edge = 1;
+		lrck_edge = 0;
+		break;
+	case SND_SOC_DAIFMT_IB_NF:
+		sclk_edge = 0;
+		lrck_edge = 0;
+		break;
+	case SND_SOC_DAIFMT_NB_IF:
+		sclk_edge = 1;
+		lrck_edge = 1;
+		break;
+	case SND_SOC_DAIFMT_IB_IF:
+		sclk_edge = 0;
+		lrck_edge = 1;
+		break;
+	default:
+		return -EINVAL;
+	}
+
 	switch (cs43130->dais[dai_id].dai_mode) {
 	case SND_SOC_DAIFMT_CBS_CFS:
 		dai_mode_val = 0;
@@ -632,8 +653,6 @@ static int cs43130_set_sp_fmt(int dai_id, unsigned int bitwidth_sclk,
 	}

 	frm_size = bitwidth_sclk * params_channels(params);
-	sclk_edge = 1;
-	lrck_edge = 0;
 	loc_ch1 = 0;
 	loc_ch2 = bitwidth_sclk * (params_channels(params) - 1);

@@ -1516,6 +1535,25 @@ static int cs43130_pcm_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
 		return -EINVAL;
 	}

+	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+	case SND_SOC_DAIFMT_NB_NF:
+		cs43130->dais[codec_dai->id].dai_invert = SND_SOC_DAIFMT_NB_NF;
+		break;
+	case SND_SOC_DAIFMT_IB_NF:
+		cs43130->dais[codec_dai->id].dai_invert = SND_SOC_DAIFMT_IB_NF;
+		break;
+	case SND_SOC_DAIFMT_NB_IF:
+		cs43130->dais[codec_dai->id].dai_invert = SND_SOC_DAIFMT_NB_IF;
+		break;
+	case SND_SOC_DAIFMT_IB_IF:
+		cs43130->dais[codec_dai->id].dai_invert = SND_SOC_DAIFMT_IB_IF;
+		break;
+	default:
+		dev_err(cs43130->dev, "Unsupported invert mode 0x%x\n",
+			fmt & SND_SOC_DAIFMT_INV_MASK);
+		return -EINVAL;
+	}
+
 	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 	case SND_SOC_DAIFMT_I2S:
 		cs43130->dais[codec_dai->id].dai_format = SND_SOC_DAIFMT_I2S;
diff --git a/sound/soc/codecs/cs43130.h b/sound/soc/codecs/cs43130.h
index 694286b78d03..dbdb5b262f1b 100644
--- a/sound/soc/codecs/cs43130.h
+++ b/sound/soc/codecs/cs43130.h
@@ -497,6 +497,7 @@ struct cs43130_dai {
 	unsigned int			sclk;
 	unsigned int			dai_format;
 	unsigned int			dai_mode;
+	unsigned int			dai_invert;
 };

 struct	cs43130_private {
--
2.34.1