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authorPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>2020-11-12 16:38:15 -0600
committerMark Brown <broonie@kernel.org>2020-11-19 18:24:36 +0000
commit644eebdbbf1154c995d6319c133d7d5b898c5ed2 (patch)
tree348565439959151d88cffe2b9347d0bff8cb9f53 /include/sound/soc-acpi.h
parentALSA: hda: intel-dsp-config: add helper for ACPI DSP driver selection (diff)
downloadlinux-dev-644eebdbbf1154c995d6319c133d7d5b898c5ed2.tar.xz
linux-dev-644eebdbbf1154c995d6319c133d7d5b898c5ed2.zip
ASoC: soc-acpi: add helper to identify parent driver.
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> Link: https://lore.kernel.org/r/20201112223825.39765-5-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/sound/soc-acpi.h')
-rw-r--r--include/sound/soc-acpi.h6
1 files changed, 6 insertions, 0 deletions
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