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ALSA: hda: Update and expose codec register procedures 

With few changes, snd_hda_codec_register() and its
unregister-counterpart can be re-used by ASoC drivers. While at it,
provide kernel doc for the exposed functions.

Due to ALSA-device vs ASoC-component organization differences, new
'snddev_managed' argument is specified allowing for better control over
codec registration process.

Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20220214101404.4074026-4-cezary.rojewski@intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Cezary Rojewski 2022-02-14 11:14:03 +01:00 committed by Takashi Iwai
parent 595511a3ab
commit 17e0c4cbb7
4 changed files with 31 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
include/sound/hda_codec.h
View File

@ -312,9 +312,12 @@ snd_hda_codec_device_init(struct hda_bus *bus, unsigned int codec_addr,
int snd_hda_codec_new(struct hda_bus *bus, struct snd_card *card,
unsigned int codec_addr, struct hda_codec **codecp);
int snd_hda_codec_device_new(struct hda_bus *bus, struct snd_card *card,
unsigned int codec_addr, struct hda_codec *codec);
unsigned int codec_addr, struct hda_codec *codec,
bool snddev_managed);
int snd_hda_codec_configure(struct hda_codec *codec);
int snd_hda_codec_update_widgets(struct hda_codec *codec);
void snd_hda_codec_register(struct hda_codec *codec);
void snd_hda_codec_unregister(struct hda_codec *codec);
/*
* low level functions

35
sound/pci/hda/hda_codec.c
View File

@ -813,7 +813,12 @@ void snd_hda_codec_display_power(struct hda_codec *codec, bool enable)
snd_hdac_display_power(&codec->bus->core, codec->addr, enable);
}
/* also called from hda_bind.c */
/**
* snd_hda_codec_register - Finalize codec initialization
* @codec: codec device to register
*
* Also called from hda_bind.c
*/
void snd_hda_codec_register(struct hda_codec *codec)
{
if (codec->registered)
@ -826,6 +831,7 @@ void snd_hda_codec_register(struct hda_codec *codec)
codec->registered = 1;
}
}
EXPORT_SYMBOL_GPL(snd_hda_codec_register);
static int snd_hda_codec_dev_register(struct snd_device *device)
{
@ -833,10 +839,12 @@ static int snd_hda_codec_dev_register(struct snd_device *device)
return 0;
}
static int snd_hda_codec_dev_free(struct snd_device *device)
/**
* snd_hda_codec_unregister - Unregister specified codec device
* @codec: codec device to unregister
*/
void snd_hda_codec_unregister(struct hda_codec *codec)
{
struct hda_codec *codec = device->device_data;
codec->in_freeing = 1;
/*
* snd_hda_codec_device_new() is used by legacy HDA and ASoC driver.
@ -853,7 +861,12 @@ static int snd_hda_codec_dev_free(struct snd_device *device)
*/
if (codec->core.type == HDA_DEV_LEGACY)
put_device(hda_codec_dev(codec));
}
EXPORT_SYMBOL_GPL(snd_hda_codec_unregister);
static int snd_hda_codec_dev_free(struct snd_device *device)
{
snd_hda_codec_unregister(device->device_data);
return 0;
}
@ -940,12 +953,13 @@ int snd_hda_codec_new(struct hda_bus *bus, struct snd_card *card,
return PTR_ERR(codec);
*codecp = codec;
return snd_hda_codec_device_new(bus, card, codec_addr, *codecp);
return snd_hda_codec_device_new(bus, card, codec_addr, *codecp, true);
}
EXPORT_SYMBOL_GPL(snd_hda_codec_new);
int snd_hda_codec_device_new(struct hda_bus *bus, struct snd_card *card,
unsigned int codec_addr, struct hda_codec *codec)
unsigned int codec_addr, struct hda_codec *codec,
bool snddev_managed)
{
char component[31];
hda_nid_t fg;
@ -1020,9 +1034,12 @@ int snd_hda_codec_device_new(struct hda_bus *bus, struct snd_card *card,
codec->core.subsystem_id, codec->core.revision_id);
snd_component_add(card, component);
err = snd_device_new(card, SNDRV_DEV_CODEC, codec, &dev_ops);
if (err < 0)
goto error;
if (snddev_managed) {
/* ASoC features component management instead */
err = snd_device_new(card, SNDRV_DEV_CODEC, codec, &dev_ops);
if (err < 0)
goto error;
}
/* PM runtime needs to be enabled later after binding codec */
pm_runtime_forbid(&codec->core.dev);

1
sound/pci/hda/hda_local.h
View File

@ -135,7 +135,6 @@ int __snd_hda_add_vmaster(struct hda_codec *codec, char *name,
#define snd_hda_add_vmaster(codec, name, tlv, followers, suffix, access) \
__snd_hda_add_vmaster(codec, name, tlv, followers, suffix, true, access, NULL)
int snd_hda_codec_reset(struct hda_codec *codec);
void snd_hda_codec_register(struct hda_codec *codec);
void snd_hda_codec_cleanup_for_unbind(struct hda_codec *codec);
void snd_hda_codec_disconnect_pcms(struct hda_codec *codec);

2
sound/soc/codecs/hdac_hda.c
View File

@ -413,7 +413,7 @@ static int hdac_hda_codec_probe(struct snd_soc_component *component)
HDA_CODEC_IDX_CONTROLLER, true);
ret = snd_hda_codec_device_new(hcodec->bus, component->card->snd_card,
hdev->addr, hcodec);
hdev->addr, hcodec, true);
if (ret < 0) {
dev_err(&hdev->dev, "failed to create hda codec %d\n", ret);
goto error_no_pm;