kernel/linux
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ synced 2026-11-10 20:48:12 +00:00
Code Issues Releases Packages Activity

ASoC: qcom: qdsp6: add push/pull module support

Browse source 
Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com> says:

This patchset adds support for Push/Pull mode modules.
Push-pull mode uses dedicated shared-memory modules that allow the DSP
to access the PCM circular buffer directly. In addition to reducing
fragment queueing and ACK handling in the host driver,
This mode exposes a DSP-maintained position buffer that provides
fine-grained hardware pointer updates. Unlike the Read/Write Shared
Memory endpoitn modules, which are period based, where the reported
pointer advances only at period boundaries, where as push-pull mode
allows .pointer() to reflect sub-period progress, improving pointer
accuracy.
Also the driver now can queue buffers which are less than period size,
which makes tests like alsa_conformance_test happy.

Now the pointer update visibility is around 1ms, compared to min of
10ms with read/write shared memory endpoints.

Along with the circular buffer support, this patchset also adds
watermark event support to provide a period level event from dsp to
notify about period progress.

Tested this on T14s, Arduino VENTUNO-Q platforms.

Tplg related changes are available at:
https://github.com/Srinivas-Kandagatla/audioreach-topology/tree/push/pull

Link: https://patch.msgid.link/20260528185806.6316-1-srinivas.kandagatla@oss.qualcomm.com
This commit is contained in:
Mark Brown 2026-06-01 17:19:17 +01:00
commit 3ef902c960
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
5 changed files with 465 additions and 89 deletions
Download patch file Download diff file Expand all files Collapse all files