[PATCH v2 16/18] ASoC: SOF: Intel: hda-mlink: add helpers to retrieve DMIC/SSP hlink

[Peter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>]

From: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>

Small helpers to make DAI ops simpler.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
Reviewed-by: Rander Wang <rander.wang@xxxxxxxxx>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@xxxxxxxxxxxxxxx>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>
---
 include/sound/hda-mlink.h       | 10 ++++++++++
 sound/soc/sof/intel/hda-mlink.c | 24 ++++++++++++++++++++++++
 2 files changed, 34 insertions(+)

diff --git a/include/sound/hda-mlink.h b/include/sound/hda-mlink.h
index d626ef964ea7..bfd2c77c184d 100644
--- a/include/sound/hda-mlink.h
+++ b/include/sound/hda-mlink.h
@@ -7,6 +7,7 @@
  */
 
 struct hdac_bus;
+struct hdac_ext_link;
 
 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_MLINK)
 
@@ -48,6 +49,9 @@ void hda_bus_ml_reset_losidv(struct hdac_bus *bus);
 int hda_bus_ml_resume(struct hdac_bus *bus);
 int hda_bus_ml_suspend(struct hdac_bus *bus);
 
+struct hdac_ext_link *hdac_bus_eml_ssp_get_hlink(struct hdac_bus *bus);
+struct hdac_ext_link *hdac_bus_eml_dmic_get_hlink(struct hdac_bus *bus);
+
 #else
 
 static inline int
@@ -141,4 +145,10 @@ static inline void hda_bus_ml_reset_losidv(struct hdac_bus *bus) { }
 static inline int hda_bus_ml_resume(struct hdac_bus *bus) { return 0; }
 static inline int hda_bus_ml_suspend(struct hdac_bus *bus) { return 0; }
 
+static inline struct hdac_ext_link *
+hdac_bus_eml_ssp_get_hlink(struct hdac_bus *bus) { return NULL; }
+
+static inline struct hdac_ext_link *
+hdac_bus_eml_dmic_get_hlink(struct hdac_bus *bus) { return NULL; }
+
 #endif /* CONFIG_SND_SOC_SOF_HDA */
diff --git a/sound/soc/sof/intel/hda-mlink.c b/sound/soc/sof/intel/hda-mlink.c
index 5810d6f8719c..06613c081410 100644
--- a/sound/soc/sof/intel/hda-mlink.c
+++ b/sound/soc/sof/intel/hda-mlink.c
@@ -788,6 +788,30 @@ int hda_bus_ml_suspend(struct hdac_bus *bus)
 }
 EXPORT_SYMBOL_NS(hda_bus_ml_suspend, SND_SOC_SOF_HDA_MLINK);
 
+struct hdac_ext_link *hdac_bus_eml_ssp_get_hlink(struct hdac_bus *bus)
+{
+	struct hdac_ext2_link *h2link;
+
+	h2link = find_ext2_link(bus, true, AZX_REG_ML_LEPTR_ID_INTEL_SSP);
+	if (!h2link)
+		return NULL;
+
+	return &h2link->hext_link;
+}
+EXPORT_SYMBOL_NS(hdac_bus_eml_ssp_get_hlink, SND_SOC_SOF_HDA_MLINK);
+
+struct hdac_ext_link *hdac_bus_eml_dmic_get_hlink(struct hdac_bus *bus)
+{
+	struct hdac_ext2_link *h2link;
+
+	h2link = find_ext2_link(bus, true, AZX_REG_ML_LEPTR_ID_INTEL_DMIC);
+	if (!h2link)
+		return NULL;
+
+	return &h2link->hext_link;
+}
+EXPORT_SYMBOL_NS(hdac_bus_eml_dmic_get_hlink, SND_SOC_SOF_HDA_MLINK);
+
 #endif
 
 MODULE_LICENSE("Dual BSD/GPL");
-- 
2.40.0