Quelle  mt8183-dai-hostless.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0
//
// MediaTek ALSA SoC Audio DAI Hostless Control
//
// Copyright (c) 2018 MediaTek Inc.
// Author: KaiChieh Chuang <kaichieh.chuang@mediatek.com>

#include "mt8183-afe-common.h"

/* dai component */
static const struct snd_soc_dapm_route mtk_dai_hostless_routes[] = {
 /* Hostless ADDA Loopback */
 {"ADDA_DL_CH1", "ADDA_UL_CH1", "Hostless LPBK DL"},
 {"ADDA_DL_CH1", "ADDA_UL_CH2", "Hostless LPBK DL"},
 {"ADDA_DL_CH2", "ADDA_UL_CH1", "Hostless LPBK DL"},
 {"ADDA_DL_CH2", "ADDA_UL_CH2", "Hostless LPBK DL"},
 {"Hostless LPBK UL", NULL, "ADDA Capture"},

 /* Hostless Speech */
 {"ADDA_DL_CH1", "PCM_1_CAP_CH1", "Hostless Speech DL"},
 {"ADDA_DL_CH2", "PCM_1_CAP_CH1", "Hostless Speech DL"},
 {"ADDA_DL_CH2", "PCM_1_CAP_CH2", "Hostless Speech DL"},
 {"ADDA_DL_CH1", "PCM_2_CAP_CH1", "Hostless Speech DL"},
 {"ADDA_DL_CH2", "PCM_2_CAP_CH1", "Hostless Speech DL"},
 {"ADDA_DL_CH2", "PCM_2_CAP_CH2", "Hostless Speech DL"},
 {"PCM_1_PB_CH1", "ADDA_UL_CH1", "Hostless Speech DL"},
 {"PCM_1_PB_CH2", "ADDA_UL_CH2", "Hostless Speech DL"},
 {"PCM_2_PB_CH1", "ADDA_UL_CH1", "Hostless Speech DL"},
 {"PCM_2_PB_CH2", "ADDA_UL_CH2", "Hostless Speech DL"},

 {"Hostless Speech UL", NULL, "PCM 1 Capture"},
 {"Hostless Speech UL", NULL, "PCM 2 Capture"},
 {"Hostless Speech UL", NULL, "ADDA Capture"},
};

/* 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);

 return snd_soc_set_runtime_hwparams(substream, afe->mtk_afe_hardware);
}

static const struct snd_soc_dai_ops mtk_dai_hostless_ops = {
 .startup = mtk_dai_hostless_startup,
};

/* dai driver */
#define MTK_HOSTLESS_RATES (SNDRV_PCM_RATE_8000_48000 |\
      SNDRV_PCM_RATE_88200 |\
      SNDRV_PCM_RATE_96000 |\
      SNDRV_PCM_RATE_176400 |\
      SNDRV_PCM_RATE_192000)

#define MTK_HOSTLESS_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
        SNDRV_PCM_FMTBIT_S24_LE |\
        SNDRV_PCM_FMTBIT_S32_LE)

static struct snd_soc_dai_driver mtk_dai_hostless_driver[] = {
 {
  .name = "Hostless LPBK DAI",
  .id = MT8183_DAI_HOSTLESS_LPBK,
  .playback = {
   .stream_name = "Hostless LPBK DL",
   .channels_min = 1,
   .channels_max = 2,
   .rates = MTK_HOSTLESS_RATES,
   .formats = MTK_HOSTLESS_FORMATS,
  },
  .capture = {
   .stream_name = "Hostless LPBK UL",
   .channels_min = 1,
   .channels_max = 2,
   .rates = MTK_HOSTLESS_RATES,
   .formats = MTK_HOSTLESS_FORMATS,
  },
  .ops = &mtk_dai_hostless_ops,
 },
 {
  .name = "Hostless Speech DAI",
  .id = MT8183_DAI_HOSTLESS_SPEECH,
  .playback = {
   .stream_name = "Hostless Speech DL",
   .channels_min = 1,
   .channels_max = 2,
   .rates = MTK_HOSTLESS_RATES,
   .formats = MTK_HOSTLESS_FORMATS,
  },
  .capture = {
   .stream_name = "Hostless Speech UL",
   .channels_min = 1,
   .channels_max = 2,
   .rates = MTK_HOSTLESS_RATES,
   .formats = MTK_HOSTLESS_FORMATS,
  },
  .ops = &mtk_dai_hostless_ops,
 },
};

int mt8183_dai_hostless_register(struct mtk_base_afe *afe)
{
 struct mtk_base_afe_dai *dai;

 dai = devm_kzalloc(afe->dev, sizeof(*dai), GFP_KERNEL);
 if (!dai)
  return -ENOMEM;

 list_add(&dai->list, &afe->sub_dais);

 dai->dai_drivers = mtk_dai_hostless_driver;
 dai->num_dai_drivers = ARRAY_SIZE(mtk_dai_hostless_driver);

 dai->dapm_routes = mtk_dai_hostless_routes;
 dai->num_dapm_routes = ARRAY_SIZE(mtk_dai_hostless_routes);

 return 0;
}