diff options
Diffstat (limited to 'sound/soc/intel/boards/sof_sdw_hdmi.c')
-rw-r--r-- | sound/soc/intel/boards/sof_sdw_hdmi.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/sound/soc/intel/boards/sof_sdw_hdmi.c b/sound/soc/intel/boards/sof_sdw_hdmi.c new file mode 100644 index 0000000000..d47d8bf528 --- /dev/null +++ b/sound/soc/intel/boards/sof_sdw_hdmi.c @@ -0,0 +1,61 @@ +// SPDX-License-Identifier: GPL-2.0-only +// Copyright (c) 2020 Intel Corporation + +/* + * sof_sdw_hdmi - Helpers to handle HDMI from generic machine driver + */ + +#include <linux/device.h> +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/list.h> +#include <sound/soc.h> +#include <sound/soc-acpi.h> +#include <sound/jack.h> +#include "sof_sdw_common.h" +#include "hda_dsp_common.h" + +struct hdmi_pcm { + struct list_head head; + struct snd_soc_dai *codec_dai; + int device; +}; + +int sof_sdw_hdmi_init(struct snd_soc_pcm_runtime *rtd) +{ + struct mc_private *ctx = snd_soc_card_get_drvdata(rtd->card); + struct snd_soc_dai *dai = asoc_rtd_to_codec(rtd, 0); + struct hdmi_pcm *pcm; + + pcm = devm_kzalloc(rtd->card->dev, sizeof(*pcm), GFP_KERNEL); + if (!pcm) + return -ENOMEM; + + /* dai_link id is 1:1 mapped to the PCM device */ + pcm->device = rtd->dai_link->id; + pcm->codec_dai = dai; + + list_add_tail(&pcm->head, &ctx->hdmi_pcm_list); + + return 0; +} + +#define NAME_SIZE 32 +int sof_sdw_hdmi_card_late_probe(struct snd_soc_card *card) +{ + struct mc_private *ctx = snd_soc_card_get_drvdata(card); + struct hdmi_pcm *pcm; + struct snd_soc_component *component = NULL; + + if (!ctx->idisp_codec) + return 0; + + if (list_empty(&ctx->hdmi_pcm_list)) + return -EINVAL; + + pcm = list_first_entry(&ctx->hdmi_pcm_list, struct hdmi_pcm, + head); + component = pcm->codec_dai->component; + + return hda_dsp_hdmi_build_controls(card, component); +} |