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f7097161e9
Add core code to support factory calibration. This can be used by both the ASoC and HDA drivers. This code consists of implementations of debugfs handlers for three debugfs files used to start factory calibration and read the results. This is not a full implementation of debugfs files. There are some requirements to synchronize with the rest of the amp driver, and the way this is done is significantly different between ASoC and HDA. Therefore cs35l56-shared.c provides the main part of the file handlers, but the files themselves are defined in the ASoC and HDA drivers with suitable handling before calling into this shared code. The cal_data file allows the calibration to be read and also for a previous calibration to be written (for systems where the storage is not something directly accessible to drivers, such as on filesystems). Code outside the kernel should treat the content of cal_data as an opaque blob, so the struct definition is not exported as a user API. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Reviewed-by: Takashi Iwai <tiwai@suse.de> Link: https://patch.msgid.link/20251021105022.1013685-4-rf@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org> |
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| linux | ||
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