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>

diff --git a/include/sound/hda_codec.h b/include/sound/hda_codec.h
index 5e3cbcc..f74abc1 100644 (file)
--- a/include/sound/hda_codec.h
+++ b/include/sound/hda_codec.h
@@ -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

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index b7ac3a1..f0c74d3 100644 (file)
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -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);

diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h
index 8621f57..4c52dfb 100644 (file)
--- a/sound/pci/hda/hda_local.h
+++ b/sound/pci/hda/hda_local.h
@@ -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);
 

diff --git a/sound/soc/codecs/hdac_hda.c b/sound/soc/codecs/hdac_hda.c
index de5955d..667f3df 100644 (file)
--- a/sound/soc/codecs/hdac_hda.c
+++ b/sound/soc/codecs/hdac_hda.c
@@ -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;