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// SPDX-License-Identifier: GPL-2.0-only
//
// Copyright(c) 2019 Intel Corporation
#include <linux/module.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/hda_codec.h>
#include <sound/hda_i915.h>
#include "../../codecs/hdac_hda.h"
#include "hda_dsp_common.h"
#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
/*
* Search card topology and return PCM device number
* matching Nth HDMI device (zero-based index).
*/
static struct snd_pcm *hda_dsp_hdmi_pcm_handle(struct snd_soc_card *card,
int hdmi_idx)
{
struct snd_soc_pcm_runtime *rtd;
struct snd_pcm *spcm;
int i = 0;
for_each_card_rtds(card, rtd) {
spcm = rtd->pcm ?
rtd->pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].pcm : NULL;
if (spcm && strstr(spcm->id, "HDMI")) {
if (i == hdmi_idx)
return rtd->pcm;
++i;
}
}
return NULL;
}
/*
* Search card topology and register HDMI PCM related controls
* to codec driver.
*/
int hda_dsp_hdmi_build_controls(struct snd_soc_card *card,
struct snd_soc_component *comp)
{
struct hdac_hda_priv *hda_pvt;
struct hda_codec *hcodec;
struct snd_pcm *spcm;
struct hda_pcm *hpcm;
int err = 0, i = 0;
if (!comp)
return -EINVAL;
hda_pvt = snd_soc_component_get_drvdata(comp);
hcodec = hda_pvt->codec;
list_for_each_entry(hpcm, &hcodec->pcm_list_head, list) {
spcm = hda_dsp_hdmi_pcm_handle(card, i);
if (spcm) {
hpcm->pcm = spcm;
hpcm->device = spcm->device;
dev_dbg(card->dev,
"mapping HDMI converter %d to PCM %d (%p)\n",
i, hpcm->device, spcm);
} else {
hpcm->pcm = NULL;
hpcm->device = SNDRV_PCM_INVALID_DEVICE;
dev_warn(card->dev,
"%s: no PCM in topology for HDMI converter %d\n",
__func__, i);
}
i++;
}
snd_hdac_display_power(hcodec->core.bus,
HDA_CODEC_IDX_CONTROLLER, true);
err = snd_hda_codec_build_controls(hcodec);
if (err < 0)
dev_err(card->dev, "unable to create controls %d\n", err);
snd_hdac_display_power(hcodec->core.bus,
HDA_CODEC_IDX_CONTROLLER, false);
return err;
}
EXPORT_SYMBOL_NS(hda_dsp_hdmi_build_controls, "SND_SOC_INTEL_HDA_DSP_COMMON");
#endif
MODULE_DESCRIPTION("ASoC Intel HDMI helpers");
MODULE_LICENSE("GPL");
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