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hw/audio/es1370: reset current sample counter
authorVolker Rümelin <vr_qemu@t-online.de>
Sun, 17 Sep 2023 06:58:06 +0000 (08:58 +0200)
committerPatchew Applier <no-reply@patchew.org>
Tue, 10 Oct 2023 12:31:05 +0000 (12:31 +0000)
commit00e3b29d065f3b88bb3726afbd5c73f8b2bff1b4
tree564996ba978719bd26011ceffdea2ffa54da6a05
parentcea3ea670fe265421131aad90c36fbb87bc4d206
hw/audio/es1370: reset current sample counter

Reset the current sample counter when writing the Channel Sample
Count Register. The Linux ens1370 driver and the AROS sb128
driver expect the current sample counter counts down from sample
count to 0 after a write to the Channel Sample Count Register.
Currently the current sample counter starts from 0 after a reset
or the last count when the counter was stopped.

The current sample counter is used to raise an interrupt whenever
a complete buffer was transferred. When the counter starts with a
value lower than the reload value, the interrupt triggeres before
the buffer was completly transferred. This may lead to corrupted
audio streams.

Tested-by: Rene Engel <ReneEngel80@emailn.de>
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Tested-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-Id: <20230917065813.6692-1-vr_qemu@t-online.de>
hw/audio/es1370.c