Intel machine drivers are used by parent platform drivers based on closed-source firmware (Atom/SST and catpt) and SOF-based ones.
In some cases for ACPI-based platforms, the behavior of machine drivers needs to be modified depending on the parent type, typically for card names and power management.
An initial solution based on passing a boolean flag as a platform device parameter was tested earlier. Since it looked overkill, this patch suggests instead a simple string comparison to identify an SOF parent device/driver.
Suggested-by: Kai Vehmanen kai.vehmanen@linux.intel.com Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Reviewed-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com Reviewed-by: Rander Wang rander.wang@linux.intel.com Reviewed-by: Guennadi Liakhovetski guennadi.liakhovetski@linux.intel.com --- include/sound/soc-acpi.h | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/include/sound/soc-acpi.h b/include/sound/soc-acpi.h index b16a844d16ef..9a43c44dcbbb 100644 --- a/include/sound/soc-acpi.h +++ b/include/sound/soc-acpi.h @@ -171,4 +171,10 @@ struct snd_soc_acpi_codecs { u8 codecs[SND_SOC_ACPI_MAX_CODECS][ACPI_ID_LEN]; };
+static inline bool snd_soc_acpi_sof_parent(struct device *dev) +{ + return dev->parent && dev->parent->driver && dev->parent->driver->name && + !strcmp(dev->parent->driver->name, "sof-audio-acpi"); +} + #endif