From: Mark Brown Date: Fri, 15 Jul 2022 17:21:09 +0000 (+0100) Subject: Read _SUB from ACPI to be able to identify firmware X-Git-Tag: v6.6.17~6759^2~6^2~53 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1c69bbc3c10821c9b3dbbfd35284addc2850371f;p=platform%2Fkernel%2Flinux-rpi.git Read _SUB from ACPI to be able to identify firmware Merge series from Stefan Binding : CS35L41 has a DSP which is able to run firmware, as well as a tuning file. Different systems may want to use different firmwares and tuning files, and some firmwares/tunings may not be compatible with other systems. To allow a system to select the correct fimware/tuning, we can read an _SUB from the ACPI. This _SUB can then be used to uniquely identify the system in the firmware/tuning file name. Add a helper function which reads the _SUB, so this can be used by other parts in the future. Add support inside the CS35L41 ASoC driver to read this _SUB, and save it appropriately. --- 1c69bbc3c10821c9b3dbbfd35284addc2850371f