// SPDX-License-Identifier: GPL-2.0
//
// Copyright(c) 2021-2022 Intel Corporation
//
// Author: Cezary Rojewski <[email protected]>
//
#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);
goto out;
}
/* 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);
out:
/* Complement pm_runtime_get_sync(bus) in probe */
pm_runtime_mark_last_busy(bus->dev);
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 hdac_device *hdev = &codec->core;
struct hdac_bus *bus = hdev->bus;
struct hdac_ext_link *hlink;
hda_codec_patch_t patch;
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;
}
patch = (hda_codec_patch_t)codec->preset->driver_data;
if (!patch) {
dev_err(&hdev->dev, "no patch specified\n");
ret = -EINVAL;
goto err;
}
ret = patch(codec);
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 (codec->patch_ops.free)
codec->patch_ops.free(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_mark_last_busy(bus->dev);
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 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 (codec->patch_ops.free)
codec->patch_ops.free(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_mark_last_busy(bus->dev);
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 <[email protected]>");
MODULE_LICENSE("GPL");