linux/sound/soc/codecs/hdac_hda.c

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// 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/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_codec.h>
#include <sound/hda_register.h>
#include "hdac_hda.h"
#define HDAC_ANALOG_DAI_ID 0
#define HDAC_DIGITAL_DAI_ID 1
#define HDAC_ALT_ANALOG_DAI_ID 2
#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)
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_tdm_slot(struct snd_soc_dai *dai,
unsigned int tx_mask, unsigned int rx_mask,
int slots, int slot_width);
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_tdm_slot = hdac_hda_dai_set_tdm_slot,
};
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 int hdac_hda_dai_set_tdm_slot(struct snd_soc_dai *dai,
unsigned int tx_mask, unsigned int rx_mask,
int slots, int slot_width)
{
struct snd_soc_component *component = dai->component;
struct hdac_hda_priv *hda_pvt;
struct hdac_hda_pcm *pcm;
hda_pvt = snd_soc_component_get_drvdata(component);
pcm = &hda_pvt->pcm[dai->id];
if (tx_mask)
pcm[dai->id].stream_tag[SNDRV_PCM_STREAM_PLAYBACK] = tx_mask;
else
pcm[dai->id].stream_tag[SNDRV_PCM_STREAM_CAPTURE] = rx_mask;
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;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
maxbps = dai->driver->playback.sig_bits;
else
maxbps = dai->driver->capture.sig_bits;
hda_pvt = snd_soc_component_get_drvdata(component);
format_val = snd_hdac_calc_stream_format(params_rate(params),
params_channels(params),
params_format(params),
maxbps,
0);
if (!format_val) {
dev_err(dai->dev,
"invalid format_val, rate=%d, ch=%d, format=%d, maxbps=%d\n",
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;
struct hdac_device *hdev;
unsigned int format_val;
struct hda_pcm *pcm;
unsigned int stream;
int ret = 0;
hda_pvt = snd_soc_component_get_drvdata(component);
hdev = &hda_pvt->codec.core;
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(&hdev->dev, "codec prepare failed %d\n", 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)
snd_hda_codec_pcm_put(pcm);
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;
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;
default:
dev_err(&hcodec->core.dev, "invalid dai id %d\n", dai->id);
return NULL;
}
list_for_each_entry(cpcm, &hcodec->pcm_list_head, list) {
if (strpbrk(cpcm->name, pcm_name))
return cpcm;
}
dev_err(&hcodec->core.dev, "didn't find PCM for DAI %s\n", dai->name);
return NULL;
}
static int hdac_hda_codec_probe(struct snd_soc_component *component)
{
struct hdac_hda_priv *hda_pvt =
snd_soc_component_get_drvdata(component);
struct snd_soc_dapm_context *dapm =
snd_soc_component_get_dapm(component);
struct hdac_device *hdev = &hda_pvt->codec.core;
struct hda_codec *hcodec = &hda_pvt->codec;
struct hdac_ext_link *hlink;
hda_codec_patch_t patch;
int ret;
hlink = snd_hdac_ext_bus_get_link(hdev->bus, dev_name(&hdev->dev));
if (!hlink) {
dev_err(&hdev->dev, "hdac link not found\n");
return -EIO;
}
snd_hdac_ext_bus_link_get(hdev->bus, hlink);
ret = snd_hda_codec_device_new(hcodec->bus, component->card->snd_card,
hdev->addr, hcodec);
if (ret < 0) {
dev_err(&hdev->dev, "failed to create hda codec %d\n", ret);
goto error_no_pm;
}
/*
* 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 = dapm->card->snd_card;
ret = snd_hda_codec_set_name(hcodec, hcodec->preset->name);
if (ret < 0) {
dev_err(&hdev->dev, "name failed %s\n", hcodec->preset->name);
goto error;
}
ret = snd_hdac_regmap_init(&hcodec->core);
if (ret < 0) {
dev_err(&hdev->dev, "regmap init failed\n");
goto error;
}
patch = (hda_codec_patch_t)hcodec->preset->driver_data;
if (patch) {
ret = patch(hcodec);
if (ret < 0) {
dev_err(&hdev->dev, "patch failed %d\n", ret);
goto error;
}
} else {
dev_dbg(&hdev->dev, "no patch file found\n");
}
ret = snd_hda_codec_parse_pcms(hcodec);
if (ret < 0) {
dev_err(&hdev->dev, "unable to map pcms to dai %d\n", ret);
goto error;
}
ret = snd_hda_codec_build_controls(hcodec);
if (ret < 0) {
dev_err(&hdev->dev, "unable to create controls %d\n", ret);
goto error;
}
hcodec->core.lazy_cache = true;
/*
* 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:
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 hdac_ext_link *hlink = NULL;
hlink = snd_hdac_ext_bus_get_link(hdev->bus, dev_name(&hdev->dev));
if (!hlink) {
dev_err(&hdev->dev, "hdac link not found\n");
return;
}
snd_hdac_ext_bus_link_put(hdev->bus, hlink);
pm_runtime_disable(&hdev->dev);
}
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,
.idle_bias_on = false,
.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),
};
static int hdac_hda_dev_probe(struct hdac_device *hdev)
{
struct hdac_ext_link *hlink;
struct hdac_hda_priv *hda_pvt;
int ret;
/* hold the ref while we probe */
hlink = snd_hdac_ext_bus_get_link(hdev->bus, dev_name(&hdev->dev));
if (!hlink) {
dev_err(&hdev->dev, "hdac link not found\n");
return -EIO;
}
snd_hdac_ext_bus_link_get(hdev->bus, hlink);
hda_pvt = hdac_to_hda_priv(hdev);
if (!hda_pvt)
return -ENOMEM;
/* ASoC specific initialization */
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, "failed to register HDA codec %d\n", ret);
return ret;
}
dev_set_drvdata(&hdev->dev, hda_pvt);
snd_hdac_ext_bus_link_put(hdev->bus, hlink);
return ret;
}
static int hdac_hda_dev_remove(struct hdac_device *hdev)
{
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>");