ASoC: topology: Add FE DAIs dynamically

Topology will create FE DAIs dynamically from the PCM objects,
and register them to the component.

A PCM topoplogy object describes a FE DAI and DAI link. Later
patch will add FE DAI links as well.

Change tplg load ops for DAI:
- Only process a DAI.
- Pass the DAI driver pointer to the component driver for
  extra initialization.

Signed-off-by: Mengdong Lin <mengdong.lin@linux.intel.com>
Acked-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

3 files changed, 92 insertions, 54 deletions

diff --git a/include/sound/soc-topology.h b/include/sound/soc-topology.h
index 5b68e3f5aa85..78813adca2a1 100644
--- a/include/sound/soc-topology.h
+++ b/include/sound/soc-topology.h
@@ -56,12 +56,6 @@ struct snd_soc_dobj_widget {
         unsigned int kcontrol_enum:1;   /* this widget is an enum kcontrol */
 };
 
-/* dynamic PCM DAI object */
-struct snd_soc_dobj_pcm_dai {
-        struct snd_soc_tplg_pcm_dai *pd;
-        unsigned int count;
-};
-
 /* generic dynamic object - all dynamic objects belong to this struct */
 struct snd_soc_dobj {
         enum snd_soc_dobj_type type;
@@ -71,7 +65,6 @@ struct snd_soc_dobj {
         union {
                 struct snd_soc_dobj_control control;
                 struct snd_soc_dobj_widget widget;
-                struct snd_soc_dobj_pcm_dai pcm_dai;
         };
         void *private; /* core does not touch this */
 };
@@ -126,10 +119,10 @@ struct snd_soc_tplg_ops {
         int (*widget_unload)(struct snd_soc_component *,
                 struct snd_soc_dobj *);
 
-        /* FE - used for any driver specific init */
-        int (*pcm_dai_load)(struct snd_soc_component *,
-                struct snd_soc_tplg_pcm_dai *pcm_dai, int num_fe);
-        int (*pcm_dai_unload)(struct snd_soc_component *,
+        /* FE DAI - used for any driver specific init */
+        int (*dai_load)(struct snd_soc_component *,
+                struct snd_soc_dai_driver *dai_drv);
+        int (*dai_unload)(struct snd_soc_component *,
                 struct snd_soc_dobj *);
 
         /* callback to handle vendor bespoke data */
diff --git a/include/sound/soc.h b/include/sound/soc.h
index 7afb72ceac56..02b4a215fd75 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -27,7 +27,6 @@
 #include <sound/compress_driver.h>
 #include <sound/control.h>
 #include <sound/ac97_codec.h>
-#include <sound/soc-topology.h>
 
 /*
  * Convenience kcontrol builders
@@ -404,6 +403,7 @@ struct snd_soc_jack_zone;
 struct snd_soc_jack_pin;
 #include <sound/soc-dapm.h>
 #include <sound/soc-dpcm.h>
+#include <sound/soc-topology.h>
 
 struct snd_soc_jack_gpio;
 
diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c
index 6963ba20991c..446ac9a93aef 100644
--- a/sound/soc/soc-topology.c
+++ b/sound/soc/soc-topology.c
@@ -330,12 +330,12 @@ static int soc_tplg_widget_load(struct soc_tplg *tplg,
         return 0;
 }
 
-/* pass dynamic FEs configurations to component driver */
-static int soc_tplg_pcm_dai_load(struct soc_tplg *tplg,
-        struct snd_soc_tplg_pcm_dai *pcm_dai, int num_pcm_dai)
+/* pass DAI configurations to component driver for extra intialization */
+static int soc_tplg_dai_load(struct soc_tplg *tplg,
+        struct snd_soc_dai_driver *dai_drv)
 {
-        if (tplg->comp && tplg->ops && tplg->ops->pcm_dai_load)
-                return tplg->ops->pcm_dai_load(tplg->comp, pcm_dai, num_pcm_dai);
+        if (tplg->comp && tplg->ops && tplg->ops->dai_load)
+                return tplg->ops->dai_load(tplg->comp, dai_drv);
 
         return 0;
 }
@@ -495,18 +495,21 @@ static void remove_widget(struct snd_soc_component *comp,
         /* widget w is freed by soc-dapm.c */
 }
 
-/* remove PCM DAI configurations */
-static void remove_pcm_dai(struct snd_soc_component *comp,
+/* remove DAI configurations */
+static void remove_dai(struct snd_soc_component *comp,
         struct snd_soc_dobj *dobj, int pass)
 {
+        struct snd_soc_dai_driver *dai_drv =
+                container_of(dobj, struct snd_soc_dai_driver, dobj);
+
         if (pass != SOC_TPLG_PASS_PCM_DAI)
                 return;
 
-        if (dobj->ops && dobj->ops->pcm_dai_unload)
-                dobj->ops->pcm_dai_unload(comp, dobj);
+        if (dobj->ops && dobj->ops->dai_unload)
+                dobj->ops->dai_unload(comp, dobj);
 
         list_del(&dobj->list);
-        kfree(dobj);
+        kfree(dai_drv);
 }
 
 /* bind a kcontrol to it's IO handlers */
@@ -1544,18 +1547,79 @@ static int soc_tplg_dapm_complete(struct soc_tplg *tplg)
         return 0;
 }
 
-static int soc_tplg_pcm_dai_elems_load(struct soc_tplg *tplg,
+static int soc_tplg_dai_create(struct soc_tplg *tplg,
+        struct snd_soc_tplg_pcm *pcm)
+{
+        struct snd_soc_dai_driver *dai_drv;
+        struct snd_soc_pcm_stream *stream;
+        struct snd_soc_tplg_stream_caps *caps;
+        int ret;
+
+        dai_drv = kzalloc(sizeof(struct snd_soc_dai_driver), GFP_KERNEL);
+        if (dai_drv == NULL)
+                return -ENOMEM;
+
+        dai_drv->name = pcm->dai_name;
+        dai_drv->id = pcm->dai_id;
+
+        if (pcm->playback) {
+                stream = &dai_drv->playback;
+                caps = &pcm->caps[SND_SOC_TPLG_STREAM_PLAYBACK];
+
+                stream->stream_name = kstrdup(caps->name, GFP_KERNEL);
+                stream->channels_min = caps->channels_min;
+                stream->channels_max = caps->channels_max;
+                stream->rates = snd_pcm_rate_range_to_bits(caps->rate_min,
+                                                        caps->rate_max);
+                stream->formats = caps->formats;
+        }
+
+        if (pcm->capture) {
+                stream = &dai_drv->capture;
+                caps = &pcm->caps[SND_SOC_TPLG_STREAM_CAPTURE];
+
+                stream->stream_name = kstrdup(caps->name, GFP_KERNEL);
+                stream->channels_min = caps->channels_min;
+                stream->channels_max = caps->channels_max;
+                stream->rates = snd_pcm_rate_range_to_bits(caps->rate_min,
+                                                        caps->rate_max);
+                stream->formats = caps->formats;
+        }
+
+        /* pass control to component driver for optional further init */
+        ret = soc_tplg_dai_load(tplg, dai_drv);
+        if (ret < 0) {
+                dev_err(tplg->comp->dev, "ASoC: DAI loading failed\n");
+                kfree(dai_drv);
+                return ret;
+        }
+
+        dai_drv->dobj.index = tplg->index;
+        dai_drv->dobj.ops = tplg->ops;
+        dai_drv->dobj.type = SND_SOC_DOBJ_PCM;
+        list_add(&dai_drv->dobj.list, &tplg->comp->dobj_list);
+
+        /* register the DAI to the component */
+        return snd_soc_register_dai(tplg->comp, dai_drv);
+}
+
+static int soc_tplg_pcm_create(struct soc_tplg *tplg,
+        struct snd_soc_tplg_pcm *pcm)
+{
+        return soc_tplg_dai_create(tplg, pcm);
+}
+
+static int soc_tplg_pcm_elems_load(struct soc_tplg *tplg,
         struct snd_soc_tplg_hdr *hdr)
 {
-        struct snd_soc_tplg_pcm_dai *pcm_dai;
-        struct snd_soc_dobj *dobj;
+        struct snd_soc_tplg_pcm *pcm;
         int count = hdr->count;
-        int ret;
+        int i;
 
         if (tplg->pass != SOC_TPLG_PASS_PCM_DAI)
                 return 0;
 
-        pcm_dai = (struct snd_soc_tplg_pcm_dai *)tplg->pos;
+        pcm = (struct snd_soc_tplg_pcm *)tplg->pos;
 
         if (soc_tplg_check_elem_count(tplg,
                 sizeof(struct snd_soc_tplg_pcm), count,
@@ -1565,31 +1629,16 @@ static int soc_tplg_pcm_dai_elems_load(struct soc_tplg *tplg,
                 return -EINVAL;
         }
 
+        /* create the FE DAIs and DAI links */
+        for (i = 0; i < count; i++) {
+                soc_tplg_pcm_create(tplg, pcm);
+                pcm++;
+        }
+
         dev_dbg(tplg->dev, "ASoC: adding %d PCM DAIs\n", count);
         tplg->pos += sizeof(struct snd_soc_tplg_pcm) * count;
 
-        dobj = kzalloc(sizeof(struct snd_soc_dobj), GFP_KERNEL);
-        if (dobj == NULL)
-                return -ENOMEM;
-
-        /* Call the platform driver call back to register the dais */
-        ret = soc_tplg_pcm_dai_load(tplg, pcm_dai, count);
-        if (ret < 0) {
-                dev_err(tplg->comp->dev, "ASoC: PCM DAI loading failed\n");
-                goto err;
-        }
-
-        dobj->type = get_dobj_type(hdr, NULL);
-        dobj->pcm_dai.count = count;
-        dobj->pcm_dai.pd = pcm_dai;
-        dobj->ops = tplg->ops;
-        dobj->index = tplg->index;
-        list_add(&dobj->list, &tplg->comp->dobj_list);
         return 0;
-
-err:
-        kfree(dobj);
-        return ret;
 }
 
 static int soc_tplg_manifest_load(struct soc_tplg *tplg,
@@ -1681,9 +1730,7 @@ static int soc_tplg_load_header(struct soc_tplg *tplg,
         case SND_SOC_TPLG_TYPE_DAPM_WIDGET:
                 return soc_tplg_dapm_widget_elems_load(tplg, hdr);
         case SND_SOC_TPLG_TYPE_PCM:
-        case SND_SOC_TPLG_TYPE_DAI_LINK:
-        case SND_SOC_TPLG_TYPE_CODEC_LINK:
-                return soc_tplg_pcm_dai_elems_load(tplg, hdr);
+                return soc_tplg_pcm_elems_load(tplg, hdr);
         case SND_SOC_TPLG_TYPE_MANIFEST:
                 return soc_tplg_manifest_load(tplg, hdr);
         default:
@@ -1841,9 +1888,7 @@ int snd_soc_tplg_component_remove(struct snd_soc_component *comp, u32 index)
                                 remove_widget(comp, dobj, pass);
                                 break;
                         case SND_SOC_DOBJ_PCM:
-                        case SND_SOC_DOBJ_DAI_LINK:
-                        case SND_SOC_DOBJ_CODEC_LINK:
-                                remove_pcm_dai(comp, dobj, pass);
+                                remove_dai(comp, dobj, pass);
                                 break;
                         default:
                                 dev_err(comp->dev, "ASoC: invalid component type %d for removal\n",