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Diffstat (limited to 'sound/soc/codecs/hdac_hda.c')
-rw-r--r--sound/soc/codecs/hdac_hda.c677
1 files changed, 677 insertions, 0 deletions
diff --git a/sound/soc/codecs/hdac_hda.c b/sound/soc/codecs/hdac_hda.c
new file mode 100644
index 000000000000..680e341aa7f1
--- /dev/null
+++ b/sound/soc/codecs/hdac_hda.c
@@ -0,0 +1,677 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright(c) 2015-18 Intel Corporation.
+
+/*
+ * hdac_hda.c - ASoC extensions to reuse the legacy HDA codec drivers
+ * with ASoC platform drivers. These APIs are called by the legacy HDA
+ * codec drivers using hdac_ext_bus_ops ops.
+ */
+
+#include <linux/firmware.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/hdaudio_ext.h>
+#include <sound/hda_i915.h>
+#include <sound/hda_codec.h>
+#include <sound/hda_register.h>
+
+#include "hdac_hda.h"
+
+#define STUB_FORMATS (SNDRV_PCM_FMTBIT_S8 | \
+ SNDRV_PCM_FMTBIT_U8 | \
+ SNDRV_PCM_FMTBIT_S16_LE | \
+ SNDRV_PCM_FMTBIT_U16_LE | \
+ SNDRV_PCM_FMTBIT_S24_LE | \
+ SNDRV_PCM_FMTBIT_U24_LE | \
+ SNDRV_PCM_FMTBIT_S32_LE | \
+ SNDRV_PCM_FMTBIT_U32_LE | \
+ SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE)
+
+#define STUB_HDMI_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
+ SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
+ SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\
+ SNDRV_PCM_RATE_192000)
+
+#ifdef CONFIG_SND_HDA_PATCH_LOADER
+static char *loadable_patch[HDA_MAX_CODECS];
+
+module_param_array_named(patch, loadable_patch, charp, NULL, 0444);
+MODULE_PARM_DESC(patch, "Patch file array for Intel HD audio interface. The array index is the codec address.");
+#endif
+
+static int hdac_hda_dai_open(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai);
+static void hdac_hda_dai_close(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai);
+static int hdac_hda_dai_prepare(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai);
+static int hdac_hda_dai_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai);
+static int hdac_hda_dai_hw_free(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai);
+static int hdac_hda_dai_set_stream(struct snd_soc_dai *dai, void *stream,
+ int direction);
+static struct hda_pcm *snd_soc_find_pcm_from_dai(struct hdac_hda_priv *hda_pvt,
+ struct snd_soc_dai *dai);
+
+static const struct snd_soc_dai_ops hdac_hda_dai_ops = {
+ .startup = hdac_hda_dai_open,
+ .shutdown = hdac_hda_dai_close,
+ .prepare = hdac_hda_dai_prepare,
+ .hw_params = hdac_hda_dai_hw_params,
+ .hw_free = hdac_hda_dai_hw_free,
+ .set_stream = hdac_hda_dai_set_stream,
+};
+
+static struct snd_soc_dai_driver hdac_hda_dais[] = {
+{
+ .id = HDAC_ANALOG_DAI_ID,
+ .name = "Analog Codec DAI",
+ .ops = &hdac_hda_dai_ops,
+ .playback = {
+ .stream_name = "Analog Codec Playback",
+ .channels_min = 1,
+ .channels_max = 16,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = STUB_FORMATS,
+ .sig_bits = 24,
+ },
+ .capture = {
+ .stream_name = "Analog Codec Capture",
+ .channels_min = 1,
+ .channels_max = 16,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = STUB_FORMATS,
+ .sig_bits = 24,
+ },
+},
+{
+ .id = HDAC_DIGITAL_DAI_ID,
+ .name = "Digital Codec DAI",
+ .ops = &hdac_hda_dai_ops,
+ .playback = {
+ .stream_name = "Digital Codec Playback",
+ .channels_min = 1,
+ .channels_max = 16,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = STUB_FORMATS,
+ .sig_bits = 24,
+ },
+ .capture = {
+ .stream_name = "Digital Codec Capture",
+ .channels_min = 1,
+ .channels_max = 16,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = STUB_FORMATS,
+ .sig_bits = 24,
+ },
+},
+{
+ .id = HDAC_ALT_ANALOG_DAI_ID,
+ .name = "Alt Analog Codec DAI",
+ .ops = &hdac_hda_dai_ops,
+ .playback = {
+ .stream_name = "Alt Analog Codec Playback",
+ .channels_min = 1,
+ .channels_max = 16,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = STUB_FORMATS,
+ .sig_bits = 24,
+ },
+ .capture = {
+ .stream_name = "Alt Analog Codec Capture",
+ .channels_min = 1,
+ .channels_max = 16,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = STUB_FORMATS,
+ .sig_bits = 24,
+ },
+},
+};
+
+static struct snd_soc_dai_driver hdac_hda_hdmi_dais[] = {
+{
+ .id = HDAC_HDMI_0_DAI_ID,
+ .name = "intel-hdmi-hifi1",
+ .ops = &hdac_hda_dai_ops,
+ .playback = {
+ .stream_name = "hifi1",
+ .channels_min = 1,
+ .channels_max = 32,
+ .rates = STUB_HDMI_RATES,
+ .formats = STUB_FORMATS,
+ .sig_bits = 24,
+ },
+},
+{
+ .id = HDAC_HDMI_1_DAI_ID,
+ .name = "intel-hdmi-hifi2",
+ .ops = &hdac_hda_dai_ops,
+ .playback = {
+ .stream_name = "hifi2",
+ .channels_min = 1,
+ .channels_max = 32,
+ .rates = STUB_HDMI_RATES,
+ .formats = STUB_FORMATS,
+ .sig_bits = 24,
+ },
+},
+{
+ .id = HDAC_HDMI_2_DAI_ID,
+ .name = "intel-hdmi-hifi3",
+ .ops = &hdac_hda_dai_ops,
+ .playback = {
+ .stream_name = "hifi3",
+ .channels_min = 1,
+ .channels_max = 32,
+ .rates = STUB_HDMI_RATES,
+ .formats = STUB_FORMATS,
+ .sig_bits = 24,
+ },
+},
+{
+ .id = HDAC_HDMI_3_DAI_ID,
+ .name = "intel-hdmi-hifi4",
+ .ops = &hdac_hda_dai_ops,
+ .playback = {
+ .stream_name = "hifi4",
+ .channels_min = 1,
+ .channels_max = 32,
+ .rates = STUB_HDMI_RATES,
+ .formats = STUB_FORMATS,
+ .sig_bits = 24,
+ },
+},
+
+};
+
+static int hdac_hda_dai_set_stream(struct snd_soc_dai *dai,
+ void *stream, int direction)
+{
+ struct snd_soc_component *component = dai->component;
+ struct hdac_hda_priv *hda_pvt;
+ struct hdac_hda_pcm *pcm;
+ struct hdac_stream *hstream;
+
+ if (!stream)
+ return -EINVAL;
+
+ hda_pvt = snd_soc_component_get_drvdata(component);
+ pcm = &hda_pvt->pcm[dai->id];
+ hstream = (struct hdac_stream *)stream;
+
+ pcm->stream_tag[direction] = hstream->stream_tag;
+
+ return 0;
+}
+
+static int hdac_hda_dai_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct hdac_hda_priv *hda_pvt;
+ unsigned int format_val;
+ unsigned int maxbps;
+ unsigned int bits;
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ maxbps = dai->driver->playback.sig_bits;
+ else
+ maxbps = dai->driver->capture.sig_bits;
+ bits = snd_hdac_stream_format_bits(params_format(params), SNDRV_PCM_SUBFORMAT_STD, maxbps);
+
+ hda_pvt = snd_soc_component_get_drvdata(component);
+ format_val = snd_hdac_stream_format(params_channels(params), bits, params_rate(params));
+ if (!format_val) {
+ dev_err(dai->dev,
+ "%s: invalid format_val, rate=%d, ch=%d, format=%d, maxbps=%d\n",
+ __func__,
+ params_rate(params), params_channels(params),
+ params_format(params), maxbps);
+
+ return -EINVAL;
+ }
+
+ hda_pvt->pcm[dai->id].format_val[substream->stream] = format_val;
+ return 0;
+}
+
+static int hdac_hda_dai_hw_free(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct hdac_hda_priv *hda_pvt;
+ struct hda_pcm_stream *hda_stream;
+ struct hda_pcm *pcm;
+
+ hda_pvt = snd_soc_component_get_drvdata(component);
+ pcm = snd_soc_find_pcm_from_dai(hda_pvt, dai);
+ if (!pcm)
+ return -EINVAL;
+
+ hda_stream = &pcm->stream[substream->stream];
+ snd_hda_codec_cleanup(hda_pvt->codec, hda_stream, substream);
+
+ return 0;
+}
+
+static int hdac_hda_dai_prepare(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct hda_pcm_stream *hda_stream;
+ struct hdac_hda_priv *hda_pvt;
+ unsigned int format_val;
+ struct hda_pcm *pcm;
+ unsigned int stream;
+ int ret = 0;
+
+ hda_pvt = snd_soc_component_get_drvdata(component);
+ pcm = snd_soc_find_pcm_from_dai(hda_pvt, dai);
+ if (!pcm)
+ return -EINVAL;
+
+ hda_stream = &pcm->stream[substream->stream];
+
+ stream = hda_pvt->pcm[dai->id].stream_tag[substream->stream];
+ format_val = hda_pvt->pcm[dai->id].format_val[substream->stream];
+
+ ret = snd_hda_codec_prepare(hda_pvt->codec, hda_stream,
+ stream, format_val, substream);
+ if (ret < 0)
+ dev_err(dai->dev, "%s: failed %d\n", __func__, ret);
+
+ return ret;
+}
+
+static int hdac_hda_dai_open(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct hdac_hda_priv *hda_pvt;
+ struct hda_pcm_stream *hda_stream;
+ struct hda_pcm *pcm;
+ int ret;
+
+ hda_pvt = snd_soc_component_get_drvdata(component);
+ pcm = snd_soc_find_pcm_from_dai(hda_pvt, dai);
+ if (!pcm)
+ return -EINVAL;
+
+ snd_hda_codec_pcm_get(pcm);
+
+ hda_stream = &pcm->stream[substream->stream];
+
+ ret = hda_stream->ops.open(hda_stream, hda_pvt->codec, substream);
+ if (ret < 0)
+ dev_err(dai->dev, "%s: failed %d\n", __func__, ret);
+
+ return ret;
+}
+
+static void hdac_hda_dai_close(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct hdac_hda_priv *hda_pvt;
+ struct hda_pcm_stream *hda_stream;
+ struct hda_pcm *pcm;
+
+ hda_pvt = snd_soc_component_get_drvdata(component);
+ pcm = snd_soc_find_pcm_from_dai(hda_pvt, dai);
+ if (!pcm)
+ return;
+
+ hda_stream = &pcm->stream[substream->stream];
+
+ hda_stream->ops.close(hda_stream, hda_pvt->codec, substream);
+
+ snd_hda_codec_pcm_put(pcm);
+}
+
+static struct hda_pcm *snd_soc_find_pcm_from_dai(struct hdac_hda_priv *hda_pvt,
+ struct snd_soc_dai *dai)
+{
+ struct hda_codec *hcodec = hda_pvt->codec;
+ struct hda_pcm *cpcm;
+ const char *pcm_name;
+
+ /*
+ * map DAI ID to the closest matching PCM name, using the naming
+ * scheme used by hda-codec snd_hda_gen_build_pcms() and for
+ * HDMI in hda_codec patch_hdmi.c)
+ */
+
+ switch (dai->id) {
+ case HDAC_ANALOG_DAI_ID:
+ pcm_name = "Analog";
+ break;
+ case HDAC_DIGITAL_DAI_ID:
+ pcm_name = "Digital";
+ break;
+ case HDAC_ALT_ANALOG_DAI_ID:
+ pcm_name = "Alt Analog";
+ break;
+ case HDAC_HDMI_0_DAI_ID:
+ pcm_name = "HDMI 0";
+ break;
+ case HDAC_HDMI_1_DAI_ID:
+ pcm_name = "HDMI 1";
+ break;
+ case HDAC_HDMI_2_DAI_ID:
+ pcm_name = "HDMI 2";
+ break;
+ case HDAC_HDMI_3_DAI_ID:
+ pcm_name = "HDMI 3";
+ break;
+ default:
+ dev_err(dai->dev, "%s: invalid dai id %d\n", __func__, dai->id);
+ return NULL;
+ }
+
+ list_for_each_entry(cpcm, &hcodec->pcm_list_head, list) {
+ if (strstr(cpcm->name, pcm_name)) {
+ if (strcmp(pcm_name, "Analog") == 0) {
+ if (strstr(cpcm->name, "Alt Analog"))
+ continue;
+ }
+ return cpcm;
+ }
+ }
+
+ dev_err(dai->dev, "%s: didn't find PCM for DAI %s\n", __func__, dai->name);
+ return NULL;
+}
+
+static bool is_hdmi_codec(struct hda_codec *hcodec)
+{
+ struct hda_pcm *cpcm;
+
+ list_for_each_entry(cpcm, &hcodec->pcm_list_head, list) {
+ if (cpcm->pcm_type == HDA_PCM_TYPE_HDMI)
+ return true;
+ }
+
+ return false;
+}
+
+static int hdac_hda_codec_probe(struct snd_soc_component *component)
+{
+ struct hdac_hda_priv *hda_pvt =
+ snd_soc_component_get_drvdata(component);
+ struct hdac_device *hdev = &hda_pvt->codec->core;
+ struct hda_codec *hcodec = hda_pvt->codec;
+ struct hda_codec_driver *driver = hda_codec_to_driver(hcodec);
+ struct hdac_ext_link *hlink;
+ int ret;
+
+ hlink = snd_hdac_ext_bus_get_hlink_by_name(hdev->bus, dev_name(&hdev->dev));
+ if (!hlink) {
+ dev_err(&hdev->dev, "%s: hdac link not found\n", __func__);
+ return -EIO;
+ }
+
+ snd_hdac_ext_bus_link_get(hdev->bus, hlink);
+
+ /*
+ * Ensure any HDA display is powered at codec probe.
+ * After snd_hda_codec_device_new(), display power is
+ * managed by runtime PM.
+ */
+ if (hda_pvt->need_display_power)
+ snd_hdac_display_power(hdev->bus,
+ HDA_CODEC_IDX_CONTROLLER, true);
+
+ ret = snd_hda_codec_device_new(hcodec->bus, component->card->snd_card,
+ hdev->addr, hcodec, true);
+ if (ret < 0) {
+ dev_err(&hdev->dev, "%s: failed to create hda codec %d\n", __func__, ret);
+ goto error_no_pm;
+ }
+
+#ifdef CONFIG_SND_HDA_PATCH_LOADER
+ if (loadable_patch[hda_pvt->dev_index] && *loadable_patch[hda_pvt->dev_index]) {
+ const struct firmware *fw;
+
+ dev_info(&hdev->dev, "Applying patch firmware '%s'\n",
+ loadable_patch[hda_pvt->dev_index]);
+ ret = request_firmware(&fw, loadable_patch[hda_pvt->dev_index],
+ &hdev->dev);
+ if (ret < 0)
+ goto error_no_pm;
+ if (fw) {
+ ret = snd_hda_load_patch(hcodec->bus, fw->size, fw->data);
+ if (ret < 0) {
+ dev_err(&hdev->dev, "%s: failed to load hda patch %d\n", __func__, ret);
+ goto error_no_pm;
+ }
+ release_firmware(fw);
+ }
+ }
+#endif
+ /*
+ * Overwrite type to HDA_DEV_ASOC since it is a ASoC driver
+ * hda_codec.c will check this flag to determine if unregister
+ * device is needed.
+ */
+ hdev->type = HDA_DEV_ASOC;
+
+ /*
+ * snd_hda_codec_device_new decrements the usage count so call get pm
+ * else the device will be powered off
+ */
+ pm_runtime_get_noresume(&hdev->dev);
+
+ hcodec->bus->card = component->card->snd_card;
+
+ ret = snd_hda_codec_set_name(hcodec, hcodec->preset->name);
+ if (ret < 0) {
+ dev_err(&hdev->dev, "%s: name failed %s\n", __func__, hcodec->preset->name);
+ goto error_pm;
+ }
+
+ ret = snd_hdac_regmap_init(&hcodec->core);
+ if (ret < 0) {
+ dev_err(&hdev->dev, "%s: regmap init failed\n", __func__);
+ goto error_pm;
+ }
+
+ if (WARN_ON(!(driver->ops && driver->ops->probe))) {
+ ret = -EINVAL;
+ goto error_regmap;
+ }
+
+ ret = driver->ops->probe(hcodec, hcodec->preset);
+ if (ret < 0) {
+ dev_err(&hdev->dev, "%s: probe failed %d\n", __func__, ret);
+ goto error_regmap;
+ }
+
+ ret = snd_hda_codec_parse_pcms(hcodec);
+ if (ret < 0) {
+ dev_err(&hdev->dev, "%s: unable to map pcms to dai %d\n", __func__, ret);
+ goto error_patch;
+ }
+
+ /* HDMI controls need to be created in machine drivers */
+ if (!is_hdmi_codec(hcodec)) {
+ ret = snd_hda_codec_build_controls(hcodec);
+ if (ret < 0) {
+ dev_err(&hdev->dev, "%s: unable to create controls %d\n",
+ __func__, ret);
+ goto error_patch;
+ }
+ }
+
+ hcodec->core.lazy_cache = true;
+
+ if (hda_pvt->need_display_power)
+ snd_hdac_display_power(hdev->bus,
+ HDA_CODEC_IDX_CONTROLLER, false);
+
+ /* match for forbid call in snd_hda_codec_device_new() */
+ pm_runtime_allow(&hdev->dev);
+
+ /*
+ * hdac_device core already sets the state to active and calls
+ * get_noresume. So enable runtime and set the device to suspend.
+ * pm_runtime_enable is also called during codec registeration
+ */
+ pm_runtime_put(&hdev->dev);
+ pm_runtime_suspend(&hdev->dev);
+
+ return 0;
+
+error_patch:
+ if (driver->ops->remove)
+ driver->ops->remove(hcodec);
+error_regmap:
+ snd_hdac_regmap_exit(hdev);
+error_pm:
+ pm_runtime_put(&hdev->dev);
+error_no_pm:
+ snd_hdac_ext_bus_link_put(hdev->bus, hlink);
+ return ret;
+}
+
+static void hdac_hda_codec_remove(struct snd_soc_component *component)
+{
+ struct hdac_hda_priv *hda_pvt =
+ snd_soc_component_get_drvdata(component);
+ struct hdac_device *hdev = &hda_pvt->codec->core;
+ struct hda_codec *codec = hda_pvt->codec;
+ struct hda_codec_driver *driver = hda_codec_to_driver(codec);
+ struct hdac_ext_link *hlink = NULL;
+
+ hlink = snd_hdac_ext_bus_get_hlink_by_name(hdev->bus, dev_name(&hdev->dev));
+ if (!hlink) {
+ dev_err(&hdev->dev, "%s: hdac link not found\n", __func__);
+ return;
+ }
+
+ pm_runtime_disable(&hdev->dev);
+ snd_hdac_ext_bus_link_put(hdev->bus, hlink);
+
+ if (driver->ops->remove)
+ driver->ops->remove(codec);
+
+ snd_hda_codec_cleanup_for_unbind(codec);
+}
+
+static const struct snd_soc_dapm_route hdac_hda_dapm_routes[] = {
+ {"AIF1TX", NULL, "Codec Input Pin1"},
+ {"AIF2TX", NULL, "Codec Input Pin2"},
+ {"AIF3TX", NULL, "Codec Input Pin3"},
+
+ {"Codec Output Pin1", NULL, "AIF1RX"},
+ {"Codec Output Pin2", NULL, "AIF2RX"},
+ {"Codec Output Pin3", NULL, "AIF3RX"},
+};
+
+static const struct snd_soc_dapm_widget hdac_hda_dapm_widgets[] = {
+ /* Audio Interface */
+ SND_SOC_DAPM_AIF_IN("AIF1RX", "Analog Codec Playback", 0,
+ SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_AIF_IN("AIF2RX", "Digital Codec Playback", 0,
+ SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_AIF_IN("AIF3RX", "Alt Analog Codec Playback", 0,
+ SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_AIF_OUT("AIF1TX", "Analog Codec Capture", 0,
+ SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_AIF_OUT("AIF2TX", "Digital Codec Capture", 0,
+ SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_AIF_OUT("AIF3TX", "Alt Analog Codec Capture", 0,
+ SND_SOC_NOPM, 0, 0),
+
+ /* Input Pins */
+ SND_SOC_DAPM_INPUT("Codec Input Pin1"),
+ SND_SOC_DAPM_INPUT("Codec Input Pin2"),
+ SND_SOC_DAPM_INPUT("Codec Input Pin3"),
+
+ /* Output Pins */
+ SND_SOC_DAPM_OUTPUT("Codec Output Pin1"),
+ SND_SOC_DAPM_OUTPUT("Codec Output Pin2"),
+ SND_SOC_DAPM_OUTPUT("Codec Output Pin3"),
+};
+
+static const struct snd_soc_component_driver hdac_hda_codec = {
+ .probe = hdac_hda_codec_probe,
+ .remove = hdac_hda_codec_remove,
+ .dapm_widgets = hdac_hda_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(hdac_hda_dapm_widgets),
+ .dapm_routes = hdac_hda_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(hdac_hda_dapm_routes),
+ .idle_bias_on = false,
+ .endianness = 1,
+};
+
+static const struct snd_soc_component_driver hdac_hda_hdmi_codec = {
+ .probe = hdac_hda_codec_probe,
+ .remove = hdac_hda_codec_remove,
+ .idle_bias_on = false,
+ .endianness = 1,
+};
+
+static int hdac_hda_dev_probe(struct hdac_device *hdev)
+{
+ struct hdac_hda_priv *hda_pvt = dev_get_drvdata(&hdev->dev);
+ struct hdac_ext_link *hlink;
+ int ret;
+
+ /* hold the ref while we probe */
+ hlink = snd_hdac_ext_bus_get_hlink_by_name(hdev->bus, dev_name(&hdev->dev));
+ if (!hlink) {
+ dev_err(&hdev->dev, "%s: hdac link not found\n", __func__);
+ return -EIO;
+ }
+ snd_hdac_ext_bus_link_get(hdev->bus, hlink);
+
+ /* ASoC specific initialization */
+ if (hda_pvt->need_display_power)
+ ret = devm_snd_soc_register_component(&hdev->dev,
+ &hdac_hda_hdmi_codec, hdac_hda_hdmi_dais,
+ ARRAY_SIZE(hdac_hda_hdmi_dais));
+ else
+ ret = devm_snd_soc_register_component(&hdev->dev,
+ &hdac_hda_codec, hdac_hda_dais,
+ ARRAY_SIZE(hdac_hda_dais));
+
+ if (ret < 0) {
+ dev_err(&hdev->dev, "%s: failed to register HDA codec %d\n", __func__, ret);
+ return ret;
+ }
+
+ snd_hdac_ext_bus_link_put(hdev->bus, hlink);
+
+ return ret;
+}
+
+static int hdac_hda_dev_remove(struct hdac_device *hdev)
+{
+ /*
+ * Resources are freed in hdac_hda_codec_remove(). This
+ * function is kept to keep hda_codec_driver_remove() happy.
+ */
+ return 0;
+}
+
+static struct hdac_ext_bus_ops hdac_ops = {
+ .hdev_attach = hdac_hda_dev_probe,
+ .hdev_detach = hdac_hda_dev_remove,
+};
+
+struct hdac_ext_bus_ops *snd_soc_hdac_hda_get_ops(void)
+{
+ return &hdac_ops;
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_hda_get_ops);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("ASoC Extensions for legacy HDA Drivers");
+MODULE_AUTHOR("Rakesh Ughreja<rakesh.a.ughreja@intel.com>");
generated by cgit (git 2.34.1) at 2025-12-25 19:02:13 +0000