--- /dev/null
+// 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/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].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);
+ dl[i].codecs->dai_name = pcm->name;
+ dl[i].num_codecs = 1;
+ dl[i].num_cpus = 1;
+ }
+
+ *links = dl;
+ return 0;
+}
+
+static int avs_create_dapm_routes(struct device *dev, struct hda_codec *codec, int pcm_count,
+ struct snd_soc_dapm_route **routes, int *num_routes)
+{
+ struct snd_soc_dapm_route *dr;
+ struct hda_pcm *pcm;
+ const char *cname = dev_name(&codec->core.dev);
+ int i, n = 0;
+
+ /* at max twice the number of pcms */
+ dr = devm_kcalloc(dev, pcm_count * 2, sizeof(*dr), GFP_KERNEL);
+ if (!dr)
+ return -ENOMEM;
+
+ 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)) {
+ struct hda_pcm_stream *stream;
+ int dir;
+
+ dir = SNDRV_PCM_STREAM_PLAYBACK;
+ stream = &pcm->stream[dir];
+ if (!stream->substreams)
+ goto capture_routes;
+
+ dr[n].sink = devm_kasprintf(dev, GFP_KERNEL, "%s %s", pcm->name,
+ snd_pcm_direction_name(dir));
+ dr[n].source = devm_kasprintf(dev, GFP_KERNEL, "%s-cpu%d Tx", cname, i);
+ if (!dr[n].sink || !dr[n].source)
+ return -ENOMEM;
+ n++;
+
+capture_routes:
+ dir = SNDRV_PCM_STREAM_CAPTURE;
+ stream = &pcm->stream[dir];
+ if (!stream->substreams)
+ continue;
+
+ dr[n].sink = devm_kasprintf(dev, GFP_KERNEL, "%s-cpu%d Rx", cname, i);
+ dr[n].source = devm_kasprintf(dev, GFP_KERNEL, "%s %s", pcm->name,
+ snd_pcm_direction_name(dir));
+ if (!dr[n].sink || !dr[n].source)
+ return -ENOMEM;
+ n++;
+ }
+
+ *routes = dr;
+ *num_routes = n;
+ 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_dapm_route *routes;
+ 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, n, 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;
+ }
+
+ for (n = 0; n < pcm_count; n++) {
+ ret = snd_soc_add_pcm_runtime(card, &links[n]);
+ if (ret < 0) {
+ dev_err(card->dev, "add links failed: %d\n", ret);
+ return ret;
+ }
+ }
+
+ ret = avs_create_dapm_routes(card->dev, codec, pcm_count, &routes, &n);
+ if (ret < 0) {
+ dev_err(card->dev, "create routes failed: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_dapm_add_routes(&card->dapm, routes, n);
+ if (ret < 0) {
+ dev_err(card->dev, "add routes 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");
git.samba.org / sfrench / cifs-2.6.git / blobdiff