HDA streaming in DSP world means enlisting HDAudio links as BE
interfaces. Another difference when compared to its DMIC and I2S friends
is lack of NHLT blob usage - no additional hardware configuration is
needed.
Similarly to I2S component, HDA populates its DAIs dynamically, here by
the means of codec->pcm_list_head. Allows for cutting the number of soc
components required to support the interface.
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@xxxxxxxxxxxxxxx>
Signed-off-by: Cezary Rojewski <cezary.rojewski@xxxxxxxxx>
---
sound/soc/intel/avs/avs.h | 1 +
sound/soc/intel/avs/pcm.c | 349 ++++++++++++++++++++++++++++++++++++++
2 files changed, 350 insertions(+)
diff --git a/sound/soc/intel/avs/avs.h b/sound/soc/intel/avs/avs.h
index b4fd67fac17d..e628f78d1864 100644
--- a/sound/soc/intel/avs/avs.h
+++ b/sound/soc/intel/avs/avs.h
@@ -273,5 +273,6 @@ extern const struct snd_soc_dai_ops avs_dai_fe_ops;
int avs_dmic_platform_register(struct avs_dev *adev, const char *name);
int avs_i2s_platform_register(struct avs_dev *adev, const char *name, unsigned long port_mask,
unsigned long *tdms);
+int avs_hda_platform_register(struct avs_dev *adev, const char *name);
#endif /* __SOUND_SOC_INTEL_AVS_H */
diff --git a/sound/soc/intel/avs/pcm.c b/sound/soc/intel/avs/pcm.c
index 079fa19f7d7b..668f533578a6 100644
--- a/sound/soc/intel/avs/pcm.c
+++ b/sound/soc/intel/avs/pcm.c
@@ -245,6 +245,155 @@ static const struct snd_soc_dai_ops avs_dai_nonhda_be_ops = {
.trigger = avs_dai_nonhda_be_trigger,
};
+static int avs_dai_hda_be_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
+{
+ return avs_dai_startup(substream, dai, false);
+}
+
+static void avs_dai_hda_be_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
+{
+ return avs_dai_nonhda_be_shutdown(substream, dai);
+}
+
+static int avs_dai_hda_be_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params, struct snd_soc_dai *dai)
+{
+ struct avs_dma_data *data;
+ struct hdac_ext_stream *link_stream;
+
+ data = snd_soc_dai_get_dma_data(dai, substream);
+ if (data->path)
+ return 0;
+
+ link_stream = substream->runtime->private_data;
+
+ return avs_dai_be_hw_params(substream, hw_params, dai,
+ hdac_stream(link_stream)->stream_tag - 1);
+}
+
+static int avs_dai_hda_be_hw_free(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
+{
+ struct avs_dma_data *data;
+ struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream);
+ struct hdac_ext_stream *link_stream;
+ struct hdac_ext_link *link;
+ struct hda_codec *codec;
+
+ dev_dbg(dai->dev, "%s: %s\n", __func__, dai->name);
+
+ data = snd_soc_dai_get_dma_data(dai, substream);
+ if (!data->path)
+ return 0;
+
+ link_stream = substream->runtime->private_data;
+ link_stream->link_prepared = false;
+ avs_path_free(data->path);
+ data->path = NULL;
+
+ /* clear link <-> stream mapping */
+ codec = dev_to_hda_codec(asoc_rtd_to_codec(rtd, 0)->dev);
+ link = snd_hdac_ext_bus_link_at(&codec->bus->core, codec->core.addr);
+ if (!link)
+ return -EINVAL;
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ snd_hdac_ext_link_clear_stream_id(link, hdac_stream(link_stream)->stream_tag);
+
+ return 0;
+}
+
+static int avs_dai_hda_be_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
+{
+ struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream);
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct hdac_ext_stream *link_stream = runtime->private_data;
+ struct hdac_ext_link *link;
+ struct hda_codec *codec;
+ struct hdac_bus *bus;
+ unsigned int format_val;
+ int ret;
+
+ if (link_stream->link_prepared)
+ return 0;
+
+ codec = dev_to_hda_codec(asoc_rtd_to_codec(rtd, 0)->dev);
+ bus = &codec->bus->core;
+ format_val = snd_hdac_calc_stream_format(runtime->rate, runtime->channels, runtime->format,
+ runtime->sample_bits, 0);
+
+ snd_hdac_ext_stream_decouple(bus, link_stream, true);
+ snd_hdac_ext_link_stream_reset(link_stream);
+ snd_hdac_ext_link_stream_setup(link_stream, format_val);
+
+ link = snd_hdac_ext_bus_link_at(bus, codec->core.addr);
+ if (!link)
+ return -EINVAL;
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ snd_hdac_ext_link_set_stream_id(link, hdac_stream(link_stream)->stream_tag);
+
+ ret = avs_dai_prepare(to_avs_dev(dai->dev), substream, dai);
+ if (ret)
+ return ret;
+
+ link_stream->link_prepared = true;
+ return 0;
+}
+
+static int avs_dai_hda_be_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *dai)
+{
+ struct hdac_ext_stream *link_stream;
+ struct avs_dma_data *data;
+ int ret = 0;
+
+ dev_dbg(dai->dev, "entry %s cmd=%d\n", __func__, cmd);
+
+ data = snd_soc_dai_get_dma_data(dai, substream);
+ link_stream = substream->runtime->private_data;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ snd_hdac_ext_link_stream_start(link_stream);
+
+ ret = avs_path_run(data->path, AVS_TPLG_TRIGGER_AUTO);
+ if (ret < 0)
+ dev_err(dai->dev, "run BE path failed: %d\n", ret);
+ break;
+
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ case SNDRV_PCM_TRIGGER_STOP:
+ ret = avs_path_pause(data->path);
+ if (ret < 0)
+ dev_err(dai->dev, "pause BE path failed: %d\n", ret);
+
+ snd_hdac_ext_link_stream_clear(link_stream);
+
+ if (cmd == SNDRV_PCM_TRIGGER_STOP) {
+ ret = avs_path_reset(data->path);
+ if (ret < 0)
+ dev_err(dai->dev, "reset BE path failed: %d\n", ret);
+ }
+ break;
+
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static const struct snd_soc_dai_ops avs_dai_hda_be_ops = {
+ .startup = avs_dai_hda_be_startup,
+ .shutdown = avs_dai_hda_be_shutdown,
+ .hw_params = avs_dai_hda_be_hw_params,
+ .hw_free = avs_dai_hda_be_hw_free,
+ .prepare = avs_dai_hda_be_prepare,
+ .trigger = avs_dai_hda_be_trigger,
+};
+
static const unsigned int rates[] = {
8000, 11025, 12000, 16000,
22050, 24000, 32000, 44100,
@@ -831,3 +980,203 @@ int avs_i2s_platform_register(struct avs_dev *adev, const char *name, unsigned l
plat_register:
return avs_soc_component_register(adev->dev, name, &avs_component_driver, cpus, cpu_count);
}
+
+/* HD-Audio CPU DAI template */
+static const struct snd_soc_dai_driver hda_cpu_dai = {
+ .ops = &avs_dai_hda_be_ops,
+ .playback = {
+ .channels_min = 1,
+ .channels_max = 8,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_S24_LE |
+ SNDRV_PCM_FMTBIT_S32_LE,
+ },
+ .capture = {
+ .channels_min = 1,
+ .channels_max = 8,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_S24_LE |
+ SNDRV_PCM_FMTBIT_S32_LE,
+ },
+};
+
+static void avs_component_hda_unregister_dais(struct snd_soc_component *component)
+{
+ struct snd_soc_acpi_mach *mach;
+ struct snd_soc_dai *dai, *save;
+ struct hda_codec *codec;
+ char name[32];
+
+ mach = dev_get_platdata(component->card->dev);
+ codec = mach->pdata;
+ sprintf(name, "%s-cpu", dev_name(&codec->core.dev));
+
+ for_each_component_dais_safe(component, dai, save) {
+ if (!strstr(dai->driver->name, name))
+ continue;
+
+ if (dai->playback_widget)
+ snd_soc_dapm_free_widget(dai->playback_widget);
+ if (dai->capture_widget)
+ snd_soc_dapm_free_widget(dai->capture_widget);
+ snd_soc_unregister_dai(dai);
+ }
+}
+
+static int avs_component_hda_probe(struct snd_soc_component *component)
+{
+ struct snd_soc_dapm_context *dapm;
+ struct snd_soc_dai_driver *dais;
+ struct snd_soc_acpi_mach *mach;
+ struct hda_codec *codec;
+ struct hda_pcm *pcm;
+ const char *cname;
+ int pcm_count = 0, ret, i;
+
+ mach = dev_get_platdata(component->card->dev);
+ if (!mach)
+ return -EINVAL;
+
+ codec = mach->pdata;
+ if (list_empty(&codec->pcm_list_head))
+ return -EINVAL;
+ list_for_each_entry(pcm, &codec->pcm_list_head, list)
+ pcm_count++;
+
+ dais = devm_kcalloc(component->dev, pcm_count, sizeof(*dais),
+ GFP_KERNEL);
+ if (!dais)
+ return -ENOMEM;
+
+ cname = dev_name(&codec->core.dev);
+ dapm = snd_soc_component_get_dapm(component);
+ 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 snd_soc_dai *dai;
+
+ memcpy(&dais[i], &hda_cpu_dai, sizeof(*dais));
+ dais[i].id = i;
+ dais[i].name = devm_kasprintf(component->dev, GFP_KERNEL,
+ "%s-cpu%d", cname, i);
+ if (!dais[i].name) {
+ ret = -ENOMEM;
+ goto exit;
+ }
+
+ if (pcm->stream[0].substreams) {
+ dais[i].playback.stream_name =
+ devm_kasprintf(component->dev, GFP_KERNEL,
+ "%s-cpu%d Tx", cname, i);
+ if (!dais[i].playback.stream_name) {
+ ret = -ENOMEM;
+ goto exit;
+ }
+ }
+
+ if (pcm->stream[1].substreams) {
+ dais[i].capture.stream_name =
+ devm_kasprintf(component->dev, GFP_KERNEL,
+ "%s-cpu%d Rx", cname, i);
+ if (!dais[i].capture.stream_name) {
+ ret = -ENOMEM;
+ goto exit;
+ }
+ }
+
+ dai = snd_soc_register_dai(component, &dais[i], false);
+ if (!dai) {
+ dev_err(component->dev, "register dai for %s failed\n",
+ pcm->name);
+ ret = -EINVAL;
+ goto exit;
+ }
+
+ ret = snd_soc_dapm_new_dai_widgets(dapm, dai);
+ if (ret < 0) {
+ dev_err(component->dev, "create widgets failed: %d\n",
+ ret);
+ goto exit;
+ }
+ }
+
+ ret = avs_component_probe(component);
+exit:
+ if (ret)
+ avs_component_hda_unregister_dais(component);
+
+ return ret;
+}
+
+static void avs_component_hda_remove(struct snd_soc_component *component)
+{
+ avs_component_hda_unregister_dais(component);
+ avs_component_remove(component);
+}
+
+static int avs_component_hda_open(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream);
+ struct hdac_ext_stream *link_stream;
+ struct hda_codec *codec;
+
+ /* only BE DAI links are handled here */
+ if (!rtd->dai_link->no_pcm)
+ return avs_component_open(component, substream);
+
+ codec = dev_to_hda_codec(asoc_rtd_to_codec(rtd, 0)->dev);
+ link_stream = snd_hdac_ext_stream_assign(&codec->bus->core, substream,
+ HDAC_EXT_STREAM_TYPE_LINK);
+ if (!link_stream)
+ return -EBUSY;
+
+ substream->runtime->private_data = link_stream;
+ return 0;
+}
+
+static int avs_component_hda_close(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream);
+ struct hdac_ext_stream *link_stream;
+
+ /* only BE DAI links are handled here */
+ if (!rtd->dai_link->no_pcm)
+ return 0;
+
+ link_stream = substream->runtime->private_data;
+ snd_hdac_ext_stream_release(link_stream, HDAC_EXT_STREAM_TYPE_LINK);
+ substream->runtime->private_data = NULL;
+
+ return 0;
+}
+
+static const struct snd_soc_component_driver avs_hda_component_driver = {
+ .name = "avs-hda-pcm",
+ .probe = avs_component_hda_probe,
+ .remove = avs_component_hda_remove,
+ .open = avs_component_hda_open,
+ .close = avs_component_hda_close,
+ .pointer = avs_component_pointer,
+ .mmap = avs_component_mmap,
+ .pcm_construct = avs_component_construct,
+ /*
+ * hda platform component's probe() is dependent on
+ * codec->pcm_list_head, it needs to be initialized after codec
+ * component. remove_order is here for completeness sake
+ */
+ .probe_order = SND_SOC_COMP_ORDER_LATE,
+ .remove_order = SND_SOC_COMP_ORDER_EARLY,
+ .module_get_upon_open = 1,
+ .topology_name_prefix = "intel/avs",
+ .non_legacy_dai_naming = true,
+};
+
+int avs_hda_platform_register(struct avs_dev *adev, const char *name)
+{
+ return avs_soc_component_register(adev->dev, name,
+ &avs_hda_component_driver, NULL, 0);
+}
--
2.25.1
