ASoC: SOF: Intel: hda-mlink: add helper to get SoundWire hlink

Same functionality as for DMIC/SSP with different ID.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com
Reviewed-by: Rander Wang <rander.wang@intel.com
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com
Link: https://lore.kernel.org/r/20230512174611.84372-3-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org

diff --git a/include/sound/hda-mlink.h b/include/sound/hda-mlink.h
index dbc47af081357ca4ec5c57e6285dbb0aaa69930c..5bfa8ae940e413b35afb5da43ee16c8018052f67 100644 (file)
--- a/include/sound/hda-mlink.h
+++ b/include/sound/hda-mlink.h
@@ -51,6 +51,7 @@ 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);
+struct hdac_ext_link *hdac_bus_eml_sdw_get_hlink(struct hdac_bus *bus);
 
 struct mutex *hdac_bus_eml_get_mutex(struct hdac_bus *bus, bool alt, int elid);
 
@@ -155,6 +156,9 @@ 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; }
 
+static inline struct hdac_ext_link *
+hdac_bus_eml_sdw_get_hlink(struct hdac_bus *bus) { return NULL; }
+
 static inline struct mutex *
 hdac_bus_eml_get_mutex(struct hdac_bus *bus, bool alt, int elid) { return NULL; }
 

diff --git a/sound/soc/sof/intel/hda-mlink.c b/sound/soc/sof/intel/hda-mlink.c
index 6d0145c30afe449483002e8072ecddca9d0647af..cfa43d93cbd07758e40a0914dbd7b864704559eb 100644 (file)
--- a/sound/soc/sof/intel/hda-mlink.c
+++ b/sound/soc/sof/intel/hda-mlink.c
@@ -850,6 +850,18 @@ struct hdac_ext_link *hdac_bus_eml_dmic_get_hlink(struct hdac_bus *bus)
 }
 EXPORT_SYMBOL_NS(hdac_bus_eml_dmic_get_hlink, SND_SOC_SOF_HDA_MLINK);
 
+struct hdac_ext_link *hdac_bus_eml_sdw_get_hlink(struct hdac_bus *bus)
+{
+       struct hdac_ext2_link *h2link;
+
+       h2link = find_ext2_link(bus, true, AZX_REG_ML_LEPTR_ID_SDW);
+       if (!h2link)
+               return NULL;
+
+       return &h2link->hext_link;
+}
+EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_get_hlink, SND_SOC_SOF_HDA_MLINK);
+
 int hdac_bus_eml_enable_offload(struct hdac_bus *bus, bool alt, int elid, bool enable)
 {
        struct hdac_ext2_link *h2link;