5.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx> [ Upstream commit 644eebdbbf1154c995d6319c133d7d5b898c5ed2 ] 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@xxxxxxxxxxxxxxx> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@xxxxxxxxxxxxxxx> Reviewed-by: Rander Wang <rander.wang@xxxxxxxxxxxxxxx> Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@xxxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20201112223825.39765-5-pierre-louis.bossart@xxxxxxxxxxxxxxx Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> Stable-dep-of: 0cb3b7fd530b ("ASoC: Intel: Disable route checks for Skylake boards") Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- 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 b16a844d16ef9..9a43c44dcbbba 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 -- 2.43.0
