From: Bard liao yung-chuan.liao@linux.intel.com
soc_tplg_link_config() will find the physical dai link and call soc_tplg_dai_link_load() to load the BE dai link. Currently remove_link() is only used to remove the FE dai link which is created by the topology. The BE dai link cannot however be unloaded in snd_soc_tplg_component _remove(), which is problematic if anything needs to be released or reinitialized.
This patch aligns the definitions of dynamic types with the existing UAPI and adds a new remove_backend_link() routine to unload the the BE dai link when snd_soc_tplg_component_remove() is invoked.
Signed-off-by: Bard liao yung-chuan.liao@linux.intel.com Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com --- v2: reset the dobj.type to fix module load/unload issues
include/sound/soc-topology.h | 1 + sound/soc/soc-topology.c | 32 ++++++++++++++++++++++++++++++++ 2 files changed, 33 insertions(+)
diff --git a/include/sound/soc-topology.h b/include/sound/soc-topology.h index 8c43cfc240fa..5223896de26f 100644 --- a/include/sound/soc-topology.h +++ b/include/sound/soc-topology.h @@ -45,6 +45,7 @@ enum snd_soc_dobj_type { SND_SOC_DOBJ_DAI_LINK, SND_SOC_DOBJ_PCM, SND_SOC_DOBJ_CODEC_LINK, + SND_SOC_DOBJ_BACKEND_LINK, };
/* dynamic control object */ diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c index bb7e5422a419..c5638e15a2dd 100644 --- a/sound/soc/soc-topology.c +++ b/sound/soc/soc-topology.c @@ -562,6 +562,25 @@ static void remove_link(struct snd_soc_component *comp, kfree(link); }
+/* unload dai link */ +static void remove_backend_link(struct snd_soc_component *comp, + struct snd_soc_dobj *dobj, int pass) +{ + if (pass != SOC_TPLG_PASS_LINK) + return; + + if (dobj->ops && dobj->ops->link_unload) + dobj->ops->link_unload(comp, dobj); + + /* + * We don't free the link here as what remove_link() do since BE + * links are not allocated by topology. + * We however need to reset the dobj type to its initial values + */ + dobj->type = SND_SOC_DOBJ_NONE; + list_del(&dobj->list); +} + /* bind a kcontrol to it's IO handlers */ static int soc_tplg_kcontrol_bind_io(struct snd_soc_tplg_ctl_hdr *hdr, struct snd_kcontrol_new *k, @@ -2168,6 +2187,12 @@ static int soc_tplg_link_config(struct soc_tplg *tplg, return ret; }
+ /* for unloading it in snd_soc_tplg_component_remove */ + link->dobj.index = tplg->index; + link->dobj.ops = tplg->ops; + link->dobj.type = SND_SOC_DOBJ_BACKEND_LINK; + list_add(&link->dobj.list, &tplg->comp->dobj_list); + return 0; }
@@ -2654,6 +2679,13 @@ int snd_soc_tplg_component_remove(struct snd_soc_component *comp, u32 index) case SND_SOC_DOBJ_DAI_LINK: remove_link(comp, dobj, pass); break; + case SND_SOC_DOBJ_BACKEND_LINK: + /* + * call link_unload ops if extra + * deinitialization is needed. + */ + remove_backend_link(comp, dobj, pass); + break; default: dev_err(comp->dev, "ASoC: invalid component type %d for removal\n", dobj->type);