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[2/6] ASoC: SOF: Intel: hda-mlink: add helper to get SoundWire hlink

Message ID 20230512174611.84372-3-pierre-louis.bossart@linux.intel.com
State Accepted
Commit dcb88fc47d0e79fd54a19a63a4c8a7594ba0838e
Headers show
Series ASoC: SOF: Intel: hda-mlink: fixes and extensions | expand

Commit Message

Pierre-Louis Bossart May 12, 2023, 5:46 p.m. UTC 
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>
---
 include/sound/hda-mlink.h       |  4 ++++
 sound/soc/sof/intel/hda-mlink.c | 12 ++++++++++++
 2 files changed, 16 insertions(+)
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Patch

diff --git a/include/sound/hda-mlink.h b/include/sound/hda-mlink.h
index dbc47af08135..5bfa8ae940e4 100644
--- 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 6d0145c30afe..cfa43d93cbd0 100644
--- 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;