diff options
| -rw-r--r-- | include/sound/intel-nhlt.h | 10 | ||||
| -rw-r--r-- | sound/hda/intel-nhlt.c | 26 |
2 files changed, 36 insertions, 0 deletions
diff --git a/include/sound/intel-nhlt.h b/include/sound/intel-nhlt.h index 53470d6a28d6..24dbe16684ae 100644 --- a/include/sound/intel-nhlt.h +++ b/include/sound/intel-nhlt.h @@ -143,6 +143,9 @@ intel_nhlt_get_endpoint_blob(struct device *dev, struct nhlt_acpi_table *nhlt, u32 bus_id, u8 link_type, u8 vbps, u8 bps, u8 num_ch, u32 rate, u8 dir, u8 dev_type); +int intel_nhlt_ssp_device_type(struct device *dev, struct nhlt_acpi_table *nhlt, + u8 virtual_bus_id); + #else static inline struct nhlt_acpi_table *intel_nhlt_init(struct device *dev) @@ -184,6 +187,13 @@ intel_nhlt_get_endpoint_blob(struct device *dev, struct nhlt_acpi_table *nhlt, return NULL; } +static inline int intel_nhlt_ssp_device_type(struct device *dev, + struct nhlt_acpi_table *nhlt, + u8 virtual_bus_id) +{ + return -EINVAL; +} + #endif #endif diff --git a/sound/hda/intel-nhlt.c b/sound/hda/intel-nhlt.c index 696a958d93e9..088cff799e0b 100644 --- a/sound/hda/intel-nhlt.c +++ b/sound/hda/intel-nhlt.c @@ -343,3 +343,29 @@ intel_nhlt_get_endpoint_blob(struct device *dev, struct nhlt_acpi_table *nhlt, return NULL; } EXPORT_SYMBOL(intel_nhlt_get_endpoint_blob); + +int intel_nhlt_ssp_device_type(struct device *dev, struct nhlt_acpi_table *nhlt, + u8 virtual_bus_id) +{ + struct nhlt_endpoint *epnt; + int i; + + if (!nhlt) + return -EINVAL; + + epnt = (struct nhlt_endpoint *)nhlt->desc; + for (i = 0; i < nhlt->endpoint_count; i++) { + /* for SSP link the virtual bus id is the SSP port number */ + if (epnt->linktype == NHLT_LINK_SSP && + epnt->virtual_bus_id == virtual_bus_id) { + dev_dbg(dev, "SSP%d: dev_type=%d\n", virtual_bus_id, + epnt->device_type); + return epnt->device_type; + } + + epnt = (struct nhlt_endpoint *)((u8 *)epnt + epnt->length); + } + + return -EINVAL; +} +EXPORT_SYMBOL(intel_nhlt_ssp_device_type); |