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ALSA: hda: intel-nhlt: add intel_nhlt_ssp_device_type() function 

Add a helper function intel_nhlt_ssp_device_type() to detect the type
of specific SSP port. The result is nhlt_device_type enum type which
could be NHLT_DEVICE_BT or NHLT_DEVICE_I2S.

Signed-off-by: Brent Lu <brent.lu@intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Message-ID: <20231127120657.19764-2-peter.ujfalusi@linux.intel.com>
This commit is contained in:
Brent Lu 2023-11-27 14:06:56 +02:00 committed by Takashi Iwai
parent 9f2347842b
commit 02545bc575
2 changed files with 36 additions and 0 deletions
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10
include/sound/intel-nhlt.h
View File

@ -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

26
sound/hda/intel-nhlt.c
View File

@ -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);