// SPDX-License-Identifier: GPL-2.0
//
// Copyright(c) 2021-2022 Intel Corporation
//
// Author: Cezary Rojewski <cezary.rojewski@intel.com>
//
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <sound/soc.h>
#include <sound/hdaudio_ext.h>
#include <sound/hda_i915.h>
#include <sound/hda_codec.h>
#include "hda.h"
static int hda_codec_create_dais(struct hda_codec *codec, int pcm_count,
struct snd_soc_dai_driver **drivers)
{
struct device *dev = &codec->core.dev;
struct snd_soc_dai_driver *drvs;
struct hda_pcm *pcm;
int i;
drvs = devm_kcalloc(dev, pcm_count, sizeof (*drvs), GFP_KERNEL);
if (!drvs)
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 snd_soc_pcm_stream *stream;
int dir;
dev_info(dev, "creating for %s %d\n" , pcm->name, i);
drvs[i].id = i;
drvs[i].name = pcm->name;
drvs[i].ops = &snd_soc_hda_codec_dai_ops;
dir = SNDRV_PCM_STREAM_PLAYBACK;
stream = &drvs[i].playback;
if (!pcm->stream[dir].substreams) {
dev_info(dev, "skipping playback dai for %s\n" , pcm->name);
goto capture_dais;
}
stream->stream_name =
devm_kasprintf(dev, GFP_KERNEL, "%s %s" , pcm->name,
snd_pcm_direction_name(dir));
if (!stream->stream_name)
return -ENOMEM;
stream->channels_min = pcm->stream[dir].channels_min;
stream->channels_max = pcm->stream[dir].channels_max;
stream->rates = pcm->stream[dir].rates;
stream->formats = pcm->stream[dir].formats;
stream->subformats = pcm->stream[dir].subformats;
stream->sig_bits = pcm->stream[dir].maxbps;
capture_dais:
dir = SNDRV_PCM_STREAM_CAPTURE;
stream = &drvs[i].capture;
if (!pcm->stream[dir].substreams) {
dev_info(dev, "skipping capture dai for %s\n" , pcm->name);
continue ;
}
stream->stream_name =
devm_kasprintf(dev, GFP_KERNEL, "%s %s" , pcm->name,
snd_pcm_direction_name(dir));
if (!stream->stream_name)
return -ENOMEM;
stream->channels_min = pcm->stream[dir].channels_min;
stream->channels_max = pcm->stream[dir].channels_max;
stream->rates = pcm->stream[dir].rates;
stream->formats = pcm->stream[dir].formats;
stream->subformats = pcm->stream[dir].subformats;
stream->sig_bits = pcm->stream[dir].maxbps;
}
*drivers = drvs;
return 0 ;
}
static int hda_codec_register_dais(struct hda_codec *codec, struct snd_soc_component *component)
{
struct snd_soc_dai_driver *drvs = NULL;
struct snd_soc_dapm_context *dapm;
struct hda_pcm *pcm;
int ret, pcm_count = 0 ;
if (list_empty(&codec->pcm_list_head))
return -EINVAL;
list_for_each_entry(pcm, &codec->pcm_list_head, list)
pcm_count++;
ret = hda_codec_create_dais(codec, pcm_count, &drvs);
if (ret < 0 )
return ret;
dapm = snd_soc_component_get_dapm(component);
list_for_each_entry(pcm, &codec->pcm_list_head, list) {
struct snd_soc_dai *dai;
dai = snd_soc_register_dai(component, drvs, false );
if (!dai) {
dev_err(component->dev, "register dai for %s failed\n" , pcm->name);
return -EINVAL;
}
ret = snd_soc_dapm_new_dai_widgets(dapm, dai);
if (ret < 0 ) {
dev_err(component->dev, "create widgets failed: %d\n" , ret);
snd_soc_unregister_dai(dai);
return ret;
}
snd_soc_dai_init_dma_data(dai, &pcm->stream[0 ], &pcm->stream[1 ]);
drvs++;
}
return 0 ;
}
static void hda_codec_unregister_dais(struct hda_codec *codec,
struct snd_soc_component *component)
{
struct snd_soc_dai *dai, *save;
struct hda_pcm *pcm;
for_each_component_dais_safe(component, dai, save) {
int stream;
list_for_each_entry(pcm, &codec->pcm_list_head, list) {
if (strcmp(dai->driver->name, pcm->name))
continue ;
for_each_pcm_streams(stream)
snd_soc_dapm_free_widget(snd_soc_dai_get_widget(dai, stream));
snd_soc_unregister_dai(dai);
break ;
}
}
}
int hda_codec_probe_complete(struct hda_codec *codec)
{
struct hdac_device *hdev = &codec->core;
struct hdac_bus *bus = hdev->bus;
int ret;
ret = snd_hda_codec_build_controls(codec);
if (ret < 0 ) {
dev_err(&hdev->dev, "unable to create controls %d\n" , ret);
return ret;
}
/* Bus suspended codecs as it does not manage their pm */
pm_runtime_set_active(&hdev->dev);
/* rpm was forbidden in snd_hda_codec_device_new() */
snd_hda_codec_set_power_save(codec, 2000 );
snd_hda_codec_register(codec);
/* Complement pm_runtime_get_sync(bus) in probe */
pm_runtime_put_autosuspend(bus->dev);
return ret;
}
EXPORT_SYMBOL_GPL(hda_codec_probe_complete);
/* Expects codec with usage_count=1 and status=suspended */
static int hda_codec_probe(struct snd_soc_component *component)
{
struct hda_codec *codec = dev_to_hda_codec(component->dev);
struct hda_codec_driver *driver = hda_codec_to_driver(codec);
struct hdac_device *hdev = &codec->core;
struct hdac_bus *bus = hdev->bus;
struct hdac_ext_link *hlink;
int ret;
#ifdef CONFIG_PM
WARN_ON(atomic_read(&hdev->dev.power.usage_count) != 1 ||
!pm_runtime_status_suspended(&hdev->dev));
#endif
hlink = snd_hdac_ext_bus_get_hlink_by_addr(bus, hdev->addr);
if (!hlink) {
dev_err(&hdev->dev, "hdac link not found\n" );
return -EIO;
}
pm_runtime_get_sync(bus->dev);
if (hda_codec_is_display(codec))
snd_hdac_display_power(bus, hdev->addr, true );
snd_hdac_ext_bus_link_get(bus, hlink);
ret = snd_hda_codec_device_new(codec->bus, component->card->snd_card, hdev->addr, codec,
false );
if (ret < 0 ) {
dev_err(&hdev->dev, "codec create failed: %d\n" , ret);
goto device_new_err;
}
ret = snd_hda_codec_set_name(codec, codec->preset->name);
if (ret < 0 ) {
dev_err(&hdev->dev, "set name: %s failed: %d\n" , codec->preset->name, ret);
goto err;
}
ret = snd_hdac_regmap_init(&codec->core);
if (ret < 0 ) {
dev_err(&hdev->dev, "regmap init failed: %d\n" , ret);
goto err;
}
if (WARN_ON(!(driver->ops && driver->ops->probe))) {
ret = -EINVAL;
goto err;
}
ret = driver->ops->probe(codec, codec->preset);
if (ret < 0 ) {
dev_err(&hdev->dev, "codec init failed: %d\n" , ret);
goto err;
}
ret = snd_hda_codec_parse_pcms(codec);
if (ret < 0 ) {
dev_err(&hdev->dev, "unable to map pcms to dai: %d\n" , ret);
goto parse_pcms_err;
}
ret = hda_codec_register_dais(codec, component);
if (ret < 0 ) {
dev_err(&hdev->dev, "update dais failed: %d\n" , ret);
goto parse_pcms_err;
}
if (!hda_codec_is_display(codec)) {
ret = hda_codec_probe_complete(codec);
if (ret < 0 )
goto complete_err;
}
codec->core.lazy_cache = true ;
return 0 ;
complete_err:
hda_codec_unregister_dais(codec, component);
parse_pcms_err:
if (driver->ops->remove)
driver->ops->remove(codec);
err:
snd_hda_codec_cleanup_for_unbind(codec);
device_new_err:
if (hda_codec_is_display(codec))
snd_hdac_display_power(bus, hdev->addr, false );
snd_hdac_ext_bus_link_put(bus, hlink);
pm_runtime_put_autosuspend(bus->dev);
return ret;
}
/* Leaves codec with usage_count=1 and status=suspended */
static void hda_codec_remove(struct snd_soc_component *component)
{
struct hda_codec *codec = dev_to_hda_codec(component->dev);
struct hda_codec_driver *driver = hda_codec_to_driver(codec);
struct hdac_device *hdev = &codec->core;
struct hdac_bus *bus = hdev->bus;
struct hdac_ext_link *hlink;
bool was_registered = codec->core.registered;
/* Don't allow any more runtime suspends */
pm_runtime_forbid(&hdev->dev);
hda_codec_unregister_dais(codec, component);
if (driver->ops->remove)
driver->ops->remove(codec);
snd_hda_codec_cleanup_for_unbind(codec);
pm_runtime_put_noidle(&hdev->dev);
/* snd_hdac_device_exit() is only called on bus remove */
pm_runtime_set_suspended(&hdev->dev);
if (hda_codec_is_display(codec))
snd_hdac_display_power(bus, hdev->addr, false );
hlink = snd_hdac_ext_bus_get_hlink_by_addr(bus, hdev->addr);
if (hlink)
snd_hdac_ext_bus_link_put(bus, hlink);
/*
* HDMI card ' s hda_codec_probe_complete ( ) ( see late_probe ( ) ) may
* not be called due to early error , leaving bus uc unbalanced
*/
if (!was_registered) {
pm_runtime_put_autosuspend(bus->dev);
}
#ifdef CONFIG_PM
WARN_ON(atomic_read(&hdev->dev.power.usage_count) != 1 ||
!pm_runtime_status_suspended(&hdev->dev));
#endif
}
static const struct snd_soc_dapm_route 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 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 struct snd_soc_dai_driver card_binder_dai = {
.id = -1 ,
.name = "codec-probing-DAI" ,
};
static int hda_hdev_attach(struct hdac_device *hdev)
{
struct hda_codec *codec = dev_to_hda_codec(&hdev->dev);
struct snd_soc_component_driver *comp_drv;
if (hda_codec_is_display(codec) && !hdev->bus->audio_component) {
dev_dbg(&hdev->dev, "no i915, skip registration for 0x%08x\n" , hdev->vendor_id);
return -ENODEV;
}
comp_drv = devm_kzalloc(&hdev->dev, sizeof (*comp_drv), GFP_KERNEL);
if (!comp_drv)
return -ENOMEM;
/*
* It ' s save to rely on dev_name ( ) rather than a copy as component
* driver ' s lifetime is directly tied to hda codec one
*/
comp_drv->name = dev_name(&hdev->dev);
comp_drv->probe = hda_codec_probe;
comp_drv->remove = hda_codec_remove;
comp_drv->idle_bias_on = false ;
if (!hda_codec_is_display(codec)) {
comp_drv->dapm_widgets = hda_dapm_widgets;
comp_drv->num_dapm_widgets = ARRAY_SIZE(hda_dapm_widgets);
comp_drv->dapm_routes = hda_dapm_routes;
comp_drv->num_dapm_routes = ARRAY_SIZE(hda_dapm_routes);
}
return snd_soc_register_component(&hdev->dev, comp_drv, &card_binder_dai, 1 );
}
static int hda_hdev_detach(struct hdac_device *hdev)
{
struct hda_codec *codec = dev_to_hda_codec(&hdev->dev);
if (codec->core.registered)
cancel_delayed_work_sync(&codec->jackpoll_work);
snd_soc_unregister_component(&hdev->dev);
return 0 ;
}
const struct hdac_ext_bus_ops soc_hda_ext_bus_ops = {
.hdev_attach = hda_hdev_attach,
.hdev_detach = hda_hdev_detach,
};
EXPORT_SYMBOL_GPL(soc_hda_ext_bus_ops);
MODULE_DESCRIPTION("HD-Audio codec driver" );
MODULE_AUTHOR("Cezary Rojewski <cezary.rojewski@intel.com>" );
MODULE_LICENSE("GPL" );
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