ASoC: cs35l56: Support for restoring calibration on ChromeOS

[PATCH 0/2] ASoC: cs35l56: Support for restoring calibration on ChromeOS

Posted by Richard Fitzgerald 2 months, 4 weeks ago

These two patches add ALSA controls to support restoring factory calibration
during OS boot on ChromeOS.

ChromeOS applies calibration during boot using a process that has restricted
access permissions. This process needs ALSA controls for all settings that
it must restore.

Richard Fitzgerald (2):
  ASoC: cs35l56: Add control to read CAL_SET_STATUS
  ASoC: cs35l56: Allow restoring factory calibration through ALSA
    control

 include/sound/cs35l56.h           | 11 ++++
 sound/soc/codecs/Kconfig          | 14 ++++++
 sound/soc/codecs/cs35l56-shared.c | 53 +++++++++++++++++++-
 sound/soc/codecs/cs35l56.c        | 83 +++++++++++++++++++++++++++++++
 4 files changed, 159 insertions(+), 2 deletions(-)

-- 
2.47.3

Re: [PATCH 0/2] ASoC: cs35l56: Support for restoring calibration on ChromeOS

Posted by Mark Brown 2 months, 3 weeks ago

On Tue, 11 Nov 2025 13:08:48 +0000, Richard Fitzgerald wrote:
> These two patches add ALSA controls to support restoring factory calibration
> during OS boot on ChromeOS.
> 
> ChromeOS applies calibration during boot using a process that has restricted
> access permissions. This process needs ALSA controls for all settings that
> it must restore.
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[1/2] ASoC: cs35l56: Add control to read CAL_SET_STATUS
      commit: 69f3474a01e9867dd99fc4b703fa834ea1835c7d
[2/2] ASoC: cs35l56: Allow restoring factory calibration through ALSA control
      commit: 32172cf3cb543a04c41a1677c97a38e60cad05b6

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark