linux-kernel - Re: [v2 04/17] ASoC: mediatek: mt8186: support hostless in platform driver

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Date:   Fri, 18 Feb 2022 15:54:12 +0100
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Jiaxin Yu <jiaxin.yu@...iatek.com>, broonie@...nel.org
Cc:     lgirdwood@...il.com, tiwai@...e.com, robh+dt@...nel.org,
        matthias.bgg@...il.com, perex@...ex.cz, p.zabel@...gutronix.de,
        geert+renesas@...der.be, trevor.wu@...iatek.com,
        tzungbi@...gle.com, aaronyu@...gle.com, zhangqilong3@...wei.com,
        alsa-devel@...a-project.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [v2 04/17] ASoC: mediatek: mt8186: support hostless in platform
 driver

Il 17/02/22 14:41, Jiaxin Yu ha scritto:
> This patch adds mt8186 hostless dai driver.
> 
> Signed-off-by: Jiaxin Yu <jiaxin.yu@...iatek.com>
> ---
>   .../soc/mediatek/mt8186/mt8186-dai-hostless.c | 295 ++++++++++++++++++
>   1 file changed, 295 insertions(+)
>   create mode 100644 sound/soc/mediatek/mt8186/mt8186-dai-hostless.c
> 
> diff --git a/sound/soc/mediatek/mt8186/mt8186-dai-hostless.c b/sound/soc/mediatek/mt8186/mt8186-dai-hostless.c
> new file mode 100644
> index 000000000000..37460a3acc93
> --- /dev/null
> +++ b/sound/soc/mediatek/mt8186/mt8186-dai-hostless.c
> @@ -0,0 +1,295 @@
> +// SPDX-License-Identifier: GPL-2.0
> +//
> +// MediaTek ALSA SoC Audio DAI Hostless Control
> +//
> +// Copyright (c) 2022 MediaTek Inc.
> +// Author: Jiaxin Yu <jiaxin.yu@...iatek.com>
> +
> +#include "mt8186-afe-common.h"
> +
> +static const struct snd_pcm_hardware mt8186_hostless_hardware = {
> +	.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
> +		 SNDRV_PCM_INFO_MMAP_VALID),
> +	.period_bytes_min = 256,
> +	.period_bytes_max = 4 * 48 * 1024,
> +	.periods_min = 2,
> +	.periods_max = 256,
> +	.buffer_bytes_max = 4 * 48 * 1024,
> +	.fifo_size = 0,
> +};
> +
> +/* dai component */
> +static const struct snd_soc_dapm_route mtk_dai_hostless_routes[] = {
> +	/* Hostless ADDA Loopback */
> +	{"ADDA_DL_CH1", "ADDA_UL_CH1 Switch", "Hostless LPBK DL"},
> +	{"ADDA_DL_CH1", "ADDA_UL_CH2 Switch", "Hostless LPBK DL"},
> +	{"ADDA_DL_CH2", "ADDA_UL_CH1 Switch", "Hostless LPBK DL"},
> +	{"ADDA_DL_CH2", "ADDA_UL_CH2 Switch", "Hostless LPBK DL"},
> +	{"I2S1_CH1", "ADDA_UL_CH1 Switch", "Hostless LPBK DL"},
> +	{"I2S1_CH2", "ADDA_UL_CH2 Switch", "Hostless LPBK DL"},
> +	{"I2S3_CH1", "ADDA_UL_CH1 Switch", "Hostless LPBK DL"},
> +	{"I2S3_CH1", "ADDA_UL_CH2 Switch", "Hostless LPBK DL"},
> +	{"I2S3_CH2", "ADDA_UL_CH1 Switch", "Hostless LPBK DL"},
> +	{"I2S3_CH2", "ADDA_UL_CH2 Switch", "Hostless LPBK DL"},
> +	{"Hostless LPBK UL", NULL, "ADDA_UL_Mux"},
> +
> +	/* Hostelss FM */
> +	/* connsys_i2s to hw gain 1*/
> +	{"Hostless FM UL", NULL, "Connsys I2S"},
> +
> +	{"HW_GAIN1_IN_CH1", "CONNSYS_I2S_CH1 Switch", "Hostless FM DL"},
> +	{"HW_GAIN1_IN_CH2", "CONNSYS_I2S_CH2 Switch", "Hostless FM DL"},
> +	/* hw gain to adda dl */
> +	{"Hostless FM UL", NULL, "HW Gain 1 Out"},
> +
> +	{"ADDA_DL_CH1", "GAIN1_OUT_CH1 Switch", "Hostless FM DL"},
> +	{"ADDA_DL_CH2", "GAIN1_OUT_CH2 Switch", "Hostless FM DL"},
> +	/* hw gain to i2s3 */
> +	{"I2S3_CH1", "GAIN1_OUT_CH1 Switch", "Hostless FM DL"},
> +	{"I2S3_CH2", "GAIN1_OUT_CH2 Switch", "Hostless FM DL"},
> +	/* hw gain to i2s1 */
> +	{"I2S1_CH1", "GAIN1_OUT_CH1 Switch", "Hostless FM DL"},
> +	{"I2S1_CH2", "GAIN1_OUT_CH2 Switch", "Hostless FM DL"},
> +
> +	/* Hostless_SRC */
> +	{"ADDA_DL_CH1", "SRC_1_OUT_CH1 Switch", "Hostless_SRC_1_DL"},
> +	{"ADDA_DL_CH2", "SRC_1_OUT_CH2 Switch", "Hostless_SRC_1_DL"},
> +	{"I2S1_CH1", "SRC_1_OUT_CH1 Switch", "Hostless_SRC_1_DL"},
> +	{"I2S1_CH2", "SRC_1_OUT_CH2 Switch", "Hostless_SRC_1_DL"},
> +	{"I2S3_CH1", "SRC_1_OUT_CH1 Switch", "Hostless_SRC_1_DL"},
> +	{"I2S3_CH2", "SRC_1_OUT_CH2 Switch", "Hostless_SRC_1_DL"},
> +	{"Hostless_SRC_1_UL", NULL, "HW_SRC_1_Out"},
> +
> +	/* Hostless_SRC_bargein */
> +	{"HW_SRC_1_IN_CH1", "I2S0_CH1 Switch", "Hostless_SRC_Bargein_DL"},
> +	{"HW_SRC_1_IN_CH2", "I2S0_CH2 Switch", "Hostless_SRC_Bargein_DL"},
> +	{"Hostless_SRC_Bargein_UL", NULL, "I2S0"},
> +
> +	/* Hostless AAudio */
> +	{"Hostless HW Gain AAudio In", NULL, "HW Gain 2 In"},
> +	{"Hostless SRC AAudio UL", NULL, "HW Gain 2 Out"},
> +	{"HW_SRC_2_IN_CH1", "HW_GAIN2_OUT_CH1 Switch", "Hostless SRC AAudio DL"},
> +	{"HW_SRC_2_IN_CH2", "HW_GAIN2_OUT_CH2 Switch", "Hostless SRC AAudio DL"},
> +};
> +
> +/* dai ops */
> +static int mtk_dai_hostless_startup(struct snd_pcm_substream *substream,
> +				    struct snd_soc_dai *dai)
> +{
> +	struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
> +	struct snd_pcm_runtime *runtime = substream->runtime;
> +	int ret;
> +
> +	snd_soc_set_runtime_hwparams(substream, &mt8186_hostless_hardware);
> +
> +	ret = snd_pcm_hw_constraint_integer(runtime,
> +					    SNDRV_PCM_HW_PARAM_PERIODS);
> +	if (ret < 0)
> +		dev_info(afe->dev, "snd_pcm_hw_constraint_integer failed\n");

	if (ret < 0) {
		dev_err(afe->dev, "setting constraints failed: %d\n", ret);
		return ret;
	}

	return 0;


Thanks,
Angelo