Thread (11 messages) 11 messages, 2 authors, 2021-03-30

Re: [PATCH v6 0/9] soundwire: qcom: various improvements

From: Vinod Koul <vkoul@kernel.org>
Date: 2021-03-30 17:26:39
Also in: alsa-devel, lkml

On 30-03-21, 15:47, Srinivas Kandagatla wrote:
Thanks for reviewing v5 of this patchset!

During testing SoundWire controller on SM8250 MTP, we found
few issues like all the interrupts are not handled,
all transport parameters are not read from device tree.
Patch to add Auto Enumeration supported by the controller
is also part of this series.

Other major issue was register read/writes which was interrupt based
was an overhead and puts lot of limitation on context it can be used from.

With previous approach number of interrupts generated
after enumeration are around 130:
$ cat /proc/interrupts  | grep soundwire
21: 130 0 0 0 0 0 0 0 GICv3 234 Edge      soundwire
    
after this patch they are just 3 interrupts
$ cat /proc/interrupts  | grep soundwire
21: 3 0 0 0 0 0 0 0 GICv3 234 Edge      soundwire

So this patchset add various improvements to the existing driver
to address above issues.

Tested it on SM8250 MTP with 2x WSA881x speakers, HeadPhones on
WCD938x via lpass-rx-macro and Analog MICs via lpass-tx-macro.
Also tested on DragonBoard DB845c with 2xWSA881x speakers.
Applied, thanks

-- 
~Vinod
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