Hi Greg and Sasha,
On Mon, Dec 04, 2023 at 12:47:34PM +0000, srinivas.kandagatla@linaro.org wrote:
From: Srinivas Kandagatla srinivas.kandagatla@linaro.org
Limit the speaker digital gains to 0dB so that the users will not damage them. Currently there is a limit in UCM, but this does not stop the user form changing the digital gains from command line. So limit this in driver which makes the speakers more safer without active speaker protection in place.
Apart from this there is also a range check fix in snd_soc_limit_volume to allow setting this limit correctly.
Tested on Lenovo X13s.
Srinivas Kandagatla (2): ASoC: ops: add correct range check for limiting volume ASoC: qcom: sc8280xp: Limit speaker digital volumes
These were unfortunately not marked for stable, but could you pick them up for 6.6?
The upstream commits are:
fb9ad2448508 ("ASoC: ops: add correct range check for limiting volume") 716d4e5373e9 ("ASoC: qcom: sc8280xp: Limit speaker digital volumes")
sound/soc/qcom/sc8280xp.c | 17 +++++++++++++++++ sound/soc/soc-ops.c | 2 +- 2 files changed, 18 insertions(+), 1 deletion(-)
Johan