Re: [PATCH v4 09/16] ASoC: mediatek: mt8365: Add PCM DAI support

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Il 26/04/24 19:22, Alexandre Mergnat ha scritto:
Add Pulse Code Modulation Device Audio Interface support for MT8365 SoC.

Signed-off-by: Alexandre Mergnat <amergnat@xxxxxxxxxxxx>
---
  sound/soc/mediatek/mt8365/mt8365-dai-pcm.c | 293 +++++++++++++++++++++++++++++
  1 file changed, 293 insertions(+)

diff --git a/sound/soc/mediatek/mt8365/mt8365-dai-pcm.c b/sound/soc/mediatek/mt8365/mt8365-dai-pcm.c
new file mode 100644
index 000000000000..a5de47c69620
--- /dev/null
+++ b/sound/soc/mediatek/mt8365/mt8365-dai-pcm.c
@@ -0,0 +1,293 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Mediatek 8365 ALSA SoC Audio DAI PCM Control
+ *
+ * Copyright (c) 2024 MediaTek Inc.
+ * Authors: Jia Zeng <jia.zeng@xxxxxxxxxxxx>
+ *          Alexandre Mergnat <amergnat@xxxxxxxxxxxx>
+ */
+
+#include <linux/bitops.h>
+#include <linux/regmap.h>
+#include <sound/pcm_params.h>
+#include "mt8365-afe-clk.h"
+#include "mt8365-afe-common.h"
+
+struct mt8365_pcm_intf_data {
+	bool slave_mode;
+	bool lrck_inv;
+	bool bck_inv;
+	unsigned int format;
+};
+
+/* DAI Drivers */
+
+static void mt8365_dai_enable_pcm1(struct mtk_base_afe *afe)
+{
+	regmap_update_bits(afe->regmap, PCM_INTF_CON1,
+			   PCM_INTF_CON1_EN, PCM_INTF_CON1_EN);
+}
+
+static void mt8365_dai_disable_pcm1(struct mtk_base_afe *afe)
+{
+	regmap_update_bits(afe->regmap, PCM_INTF_CON1,
+			   PCM_INTF_CON1_EN, 0x0);
+}
+
+static int mt8365_dai_configure_pcm1(struct snd_pcm_substream *substream,
+				     struct snd_soc_dai *dai)
+{
+	struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
+	struct mt8365_afe_private *afe_priv = afe->platform_priv;
+	struct mt8365_pcm_intf_data *pcm_priv = afe_priv->dai_priv[MT8365_AFE_IO_PCM1];
+	bool slave_mode = pcm_priv->slave_mode;
+	bool lrck_inv = pcm_priv->lrck_inv;
+	bool bck_inv = pcm_priv->bck_inv;
+	unsigned int fmt = pcm_priv->format;
+	unsigned int bit_width = dai->sample_bits;
+	unsigned int val = 0;
+
+	if (!slave_mode) {
+		val |= PCM_INTF_CON1_MASTER_MODE |
+		       PCM_INTF_CON1_BYPASS_ASRC;
+
+		if (lrck_inv)
+			val |= PCM_INTF_CON1_SYNC_OUT_INV;
+		if (bck_inv)
+			val |= PCM_INTF_CON1_BCLK_OUT_INV;
+	} else {
+		val |= PCM_INTF_CON1_SLAVE_MODE;
+
+		if (lrck_inv)
+			val |= PCM_INTF_CON1_SYNC_IN_INV;
+		if (bck_inv)
+			val |= PCM_INTF_CON1_BCLK_IN_INV;
+
+		// TODO: add asrc setting

/* TODO ... */

after which:

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>






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