LXR linux/sound/soc/intel/boards/sof_sdw

   1// SPDX-License-Identifier: GPL-2.0-only
   2// Copyright (c) 2020 Intel Corporation
   3
   4/*
   5 *  sof_sdw_hdmi - Helpers to handle HDMI from generic machine driver
   6 */
   7
   8#include <linux/device.h>
   9#include <linux/errno.h>
  10#include <linux/kernel.h>
  11#include <linux/list.h>
  12#include <sound/soc.h>
  13#include <sound/soc-acpi.h>
  14#include <sound/jack.h>
  15#include "sof_sdw_common.h"
  16#include "hda_dsp_common.h"
  17
  18struct hdmi_pcm {
  19        struct list_head head;
  20        struct snd_soc_dai *codec_dai;
  21        int device;
  22};
  23
  24int sof_sdw_hdmi_init(struct snd_soc_pcm_runtime *rtd)
  25{
  26        struct mc_private *ctx = snd_soc_card_get_drvdata(rtd->card);
  27        struct snd_soc_dai *dai = asoc_rtd_to_codec(rtd, 0);
  28        struct hdmi_pcm *pcm;
  29
  30        pcm = devm_kzalloc(rtd->card->dev, sizeof(*pcm), GFP_KERNEL);
  31        if (!pcm)
  32                return -ENOMEM;
  33
  34        /* dai_link id is 1:1 mapped to the PCM device */
  35        pcm->device = rtd->dai_link->id;
  36        pcm->codec_dai = dai;
  37
  38        list_add_tail(&pcm->head, &ctx->hdmi_pcm_list);
  39
  40        return 0;
  41}
  42
  43#define NAME_SIZE       32
  44int sof_sdw_hdmi_card_late_probe(struct snd_soc_card *card)
  45{
  46        struct mc_private *ctx = snd_soc_card_get_drvdata(card);
  47        struct hdmi_pcm *pcm;
  48        struct snd_soc_component *component = NULL;
  49
  50        if (!ctx->idisp_codec)
  51                return 0;
  52
  53        if (list_empty(&ctx->hdmi_pcm_list))
  54                return -EINVAL;
  55
  56        pcm = list_first_entry(&ctx->hdmi_pcm_list, struct hdmi_pcm,
  57                               head);
  58        component = pcm->codec_dai->component;
  59
  60        return hda_dsp_hdmi_build_controls(card, component);
  61}
  62