On 5/19/2016 1:05 AM, Mark Brown wrote:
On Mon, May 16, 2016 at 09:47:49AM +0800, John Hsu wrote:
There is another patch is made by this patch.
[PATCH 2/2] ASoC: nau8825: cross talk suppression measurement function
I'm confused about what's going on here... if you're sending multiple
patches that need to be grouped together you should always send them all
together. If you're not sending a group of patches then you shouldn't
use numbering in the subject line.
I understand. Thank you very much.
Besides, please help to review the following patch for the DC offset
issue. Thank you very much.
[PATCH] ASoC: nau8825: apply BIQ to reduce recording signal DC offset
This is hard to review since it's quite complex and doing things that
look like they might be using general purpose parts of the chip for
specialist purposes.
We find there is a DC offset issue when recording. For the issue, it
needs a HPF in ADC to reduce the offset, but no such hardware circuit.
Thus, the driver configures the biquard filter as HPF when headset
connected. It is a must setup for the codec. This patch sets the
coefficients A1, A2, B0, B1, and B3 in the biquad filter to make the
HPF funciton.
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