diff options
Diffstat (limited to 'sound/soc/intel/avs/boards/hdaudio.c')
-rw-r--r-- | sound/soc/intel/avs/boards/hdaudio.c | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/sound/soc/intel/avs/boards/hdaudio.c b/sound/soc/intel/avs/boards/hdaudio.c new file mode 100644 index 0000000000..8876558f19 --- /dev/null +++ b/sound/soc/intel/avs/boards/hdaudio.c @@ -0,0 +1,234 @@ +// SPDX-License-Identifier: GPL-2.0-only +// +// Copyright(c) 2021-2022 Intel Corporation. All rights reserved. +// +// Authors: Cezary Rojewski <cezary.rojewski@intel.com> +// Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com> +// + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <sound/hda_codec.h> +#include <sound/hda_i915.h> +#include <sound/soc.h> +#include <sound/soc-acpi.h> +#include "../../../codecs/hda.h" + +static int avs_create_dai_links(struct device *dev, struct hda_codec *codec, int pcm_count, + const char *platform_name, struct snd_soc_dai_link **links) +{ + struct snd_soc_dai_link_component *platform; + struct snd_soc_dai_link *dl; + struct hda_pcm *pcm; + const char *cname = dev_name(&codec->core.dev); + int i; + + dl = devm_kcalloc(dev, pcm_count, sizeof(*dl), GFP_KERNEL); + platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL); + if (!dl || !platform) + return -ENOMEM; + + platform->name = platform_name; + pcm = list_first_entry(&codec->pcm_list_head, struct hda_pcm, list); + + for (i = 0; i < pcm_count; i++, pcm = list_next_entry(pcm, list)) { + dl[i].name = devm_kasprintf(dev, GFP_KERNEL, "%s link%d", cname, i); + if (!dl[i].name) + return -ENOMEM; + + dl[i].id = i; + dl[i].nonatomic = 1; + dl[i].no_pcm = 1; + dl[i].dpcm_playback = 1; + dl[i].dpcm_capture = 1; + dl[i].platforms = platform; + dl[i].num_platforms = 1; + dl[i].ignore_pmdown_time = 1; + + dl[i].codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL); + dl[i].cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL); + if (!dl[i].codecs || !dl[i].cpus) + return -ENOMEM; + + dl[i].cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "%s-cpu%d", cname, i); + if (!dl[i].cpus->dai_name) + return -ENOMEM; + + dl[i].codecs->name = devm_kstrdup(dev, cname, GFP_KERNEL); + if (!dl[i].codecs->name) + return -ENOMEM; + + dl[i].codecs->dai_name = pcm->name; + dl[i].num_codecs = 1; + dl[i].num_cpus = 1; + } + + *links = dl; + return 0; +} + +/* Should be aligned with SectionPCM's name from topology */ +#define FEDAI_NAME_PREFIX "HDMI" + +static struct snd_pcm * +avs_card_hdmi_pcm_at(struct snd_soc_card *card, int hdmi_idx) +{ + struct snd_soc_pcm_runtime *rtd; + int dir = SNDRV_PCM_STREAM_PLAYBACK; + + for_each_card_rtds(card, rtd) { + struct snd_pcm *spcm; + int ret, n; + + spcm = rtd->pcm ? rtd->pcm->streams[dir].pcm : NULL; + if (!spcm || !strstr(spcm->id, FEDAI_NAME_PREFIX)) + continue; + + ret = sscanf(spcm->id, FEDAI_NAME_PREFIX "%d", &n); + if (ret != 1) + continue; + if (n == hdmi_idx) + return rtd->pcm; + } + + return NULL; +} + +static int avs_card_late_probe(struct snd_soc_card *card) +{ + struct snd_soc_acpi_mach *mach = dev_get_platdata(card->dev); + struct hda_codec *codec = mach->pdata; + struct hda_pcm *hpcm; + /* Topology pcm indexing is 1-based */ + int i = 1; + + list_for_each_entry(hpcm, &codec->pcm_list_head, list) { + struct snd_pcm *spcm; + + spcm = avs_card_hdmi_pcm_at(card, i); + if (spcm) { + hpcm->pcm = spcm; + hpcm->device = spcm->device; + dev_info(card->dev, "%s: mapping HDMI converter %d to PCM %d (%p)\n", + __func__, 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++; + } + + return hda_codec_probe_complete(codec); +} + +static int avs_probing_link_init(struct snd_soc_pcm_runtime *rtm) +{ + struct snd_soc_acpi_mach *mach; + struct snd_soc_dai_link *links = NULL; + struct snd_soc_card *card = rtm->card; + struct hda_codec *codec; + struct hda_pcm *pcm; + int ret, pcm_count = 0; + + mach = dev_get_platdata(card->dev); + codec = mach->pdata; + + if (list_empty(&codec->pcm_list_head)) + return -EINVAL; + list_for_each_entry(pcm, &codec->pcm_list_head, list) + pcm_count++; + + ret = avs_create_dai_links(card->dev, codec, pcm_count, mach->mach_params.platform, &links); + if (ret < 0) { + dev_err(card->dev, "create links failed: %d\n", ret); + return ret; + } + + ret = snd_soc_add_pcm_runtimes(card, links, pcm_count); + if (ret < 0) { + dev_err(card->dev, "add links failed: %d\n", ret); + return ret; + } + + return 0; +} + +SND_SOC_DAILINK_DEF(dummy, DAILINK_COMP_ARRAY(COMP_DUMMY())); + +static struct snd_soc_dai_link probing_link = { + .name = "probing-LINK", + .id = -1, + .nonatomic = 1, + .no_pcm = 1, + .dpcm_playback = 1, + .dpcm_capture = 1, + .cpus = dummy, + .num_cpus = ARRAY_SIZE(dummy), + .init = avs_probing_link_init, +}; + +static int avs_hdaudio_probe(struct platform_device *pdev) +{ + struct snd_soc_dai_link *binder; + struct snd_soc_acpi_mach *mach; + struct snd_soc_card *card; + struct device *dev = &pdev->dev; + struct hda_codec *codec; + + mach = dev_get_platdata(dev); + codec = mach->pdata; + + /* codec may be unloaded before card's probe() fires */ + if (!device_is_registered(&codec->core.dev)) + return -ENODEV; + + binder = devm_kmemdup(dev, &probing_link, sizeof(probing_link), GFP_KERNEL); + if (!binder) + return -ENOMEM; + + binder->platforms = devm_kzalloc(dev, sizeof(*binder->platforms), GFP_KERNEL); + binder->codecs = devm_kzalloc(dev, sizeof(*binder->codecs), GFP_KERNEL); + if (!binder->platforms || !binder->codecs) + return -ENOMEM; + + binder->codecs->name = devm_kstrdup(dev, dev_name(&codec->core.dev), GFP_KERNEL); + if (!binder->codecs->name) + return -ENOMEM; + + binder->platforms->name = mach->mach_params.platform; + binder->num_platforms = 1; + binder->codecs->dai_name = "codec-probing-DAI"; + binder->num_codecs = 1; + + card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); + if (!card) + return -ENOMEM; + + card->name = binder->codecs->name; + card->dev = dev; + card->owner = THIS_MODULE; + card->dai_link = binder; + card->num_links = 1; + card->fully_routed = true; + if (hda_codec_is_display(codec)) + card->late_probe = avs_card_late_probe; + + return devm_snd_soc_register_card(dev, card); +} + +static struct platform_driver avs_hdaudio_driver = { + .probe = avs_hdaudio_probe, + .driver = { + .name = "avs_hdaudio", + .pm = &snd_soc_pm_ops, + }, +}; + +module_platform_driver(avs_hdaudio_driver) + +MODULE_DESCRIPTION("Intel HD-Audio machine driver"); +MODULE_AUTHOR("Cezary Rojewski <cezary.rojewski@intel.com>"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:avs_hdaudio"); |