It's been reported that a number of laptops have a low volume level from the digital microphone compared to Windows.
AMD offers a register that can adjust the gain for PDM which is not configured at maximum gain by default.
To fix this change the default for all 3 drivers to raise the gain but also offer a module parameter. The module parameter can be used for debugging if the gain is too high on a given laptop.
This is intentionally split into multiple patches for default and parameter so that if the default really does behave better universally we can bring it back to stable too later.
v1->v2: * Add guards for parameter usage * More comments in commit messages
Mario Limonciello (6): ASoC: amd: yc: Adjust the gain for PDM DMIC ASoC: amd: yc: Add a module parameter to influence pdm_gain ASoC: amd: renoir: Adjust the gain for PDM DMIC ASoC: amd: renoir: Add a module parameter to influence pdm_gain ASoC: amd: ps: Adjust the gain for PDM DMIC ASoC: amd: ps: Add a module parameter to influence pdm_gain
sound/soc/amd/ps/acp63.h | 2 +- sound/soc/amd/ps/ps-pdm-dma.c | 10 +++++++++- sound/soc/amd/renoir/acp3x-pdm-dma.c | 10 +++++++++- sound/soc/amd/renoir/rn_acp3x.h | 2 +- sound/soc/amd/yc/acp6x-pdm-dma.c | 10 +++++++++- sound/soc/amd/yc/acp6x.h | 2 +- 6 files changed, 30 insertions(+), 6 deletions(-)