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>