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Now that increases in the latency produce less undefined behavior on the SPI
busses, provide an interface for client drivers to inform the voicebus library
to not increase the latency if underruns are detected. This can speed up loads
of the driver since latency bumps do not trigger a restart of the driver
initialization. DAHDI-278.
git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@7518 a0bf4364-ded3-4de4-8d8a-66a801d63aff
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Previously, when the host system fails to service the interrupt in a timely
fashion, the transmit descriptor ring for the voicebus card would "go empty"
since the interface wouldn't have another descriptor to read in. The driver
only knows that it went empty, not how far behind it actually was. Therefore,
the driver could just increase the latency by a millisecond and keep going
waiting for another bump.
Additionally, when the transmit descriptor actually goes empty, there are some
cases where an in process SPI transaction to one of the modules is interrupted,
which may result in corrupted module register writes on rare occassions.
This now makes it possible for the voicebus drivers to coexist with some devices
that periodically lock interrupts for longer than 25ms. Before this patch, the
latency would constantly increase until either the modules received a corrupted
frame.
This patch preconfigures all the receive descriptors to send an "idle" packet
that will be transmitted to the onboard modules when the host doesn't service
the interrupt within (latency - 2)ms. There are now two kinds of underruns,
softunderuns where the driver can detect that these idlebuffers have made it to
the TX FIFO, and the normal hard underrun where the part signals a transmit
descriptor unavailable interrupt. DAHDI-278.
git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@7517 a0bf4364-ded3-4de4-8d8a-66a801d63aff
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git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@7516 a0bf4364-ded3-4de4-8d8a-66a801d63aff
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git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@7515 a0bf4364-ded3-4de4-8d8a-66a801d63aff
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This is only used during startup so we don't need to carry it around in the
structure at all times.
git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@7514 a0bf4364-ded3-4de4-8d8a-66a801d63aff
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Unnecessarily duplicates the dev_xxx macros. Also removes the need for the
board_name member from struct voicebus.
git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@7513 a0bf4364-ded3-4de4-8d8a-66a801d63aff
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Brings in the change from r7065 that was on the team/sruffell/dahdi-linux-vpm119
branch.
git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@7480 a0bf4364-ded3-4de4-8d8a-66a801d63aff
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git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@7309 a0bf4364-ded3-4de4-8d8a-66a801d63aff
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git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@7284 a0bf4364-ded3-4de4-8d8a-66a801d63aff
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On older kernels, it is possible to cause a kernel panic if the lenght of the
workqueue name is greater than 10. DAHDI-276.
git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@6776 a0bf4364-ded3-4de4-8d8a-66a801d63aff
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git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@6628 a0bf4364-ded3-4de4-8d8a-66a801d63aff
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I accidentally changed to print everytime. They should only be printed if
DEBUG_ECHOCAN is specified in the debug module parameter.
git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@6625 a0bf4364-ded3-4de4-8d8a-66a801d63aff
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Move the echo can channel parameters into a common location for both the
wcte12xp and wctdm24xxp drivers that use the voicebus module. This is intended
to make it clearer which differences are required between the clients.
Additionally, update the default parameters to the new recommended values.
VPMADT032-37
git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@6589 a0bf4364-ded3-4de4-8d8a-66a801d63aff
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Depending on the system latency, the deferred work for the vpmadt032 can take
up to 200ms. This change allows each vpmadt032 to use its own workqueue, and
not the global system workqueue. This prevents vpm operations from blocking
the main system workqueue for extended periods.
This restores the behavior to the way it was before the common vpmadt032 code
was moved out of the wctdm24xxp and wcte12xp drivers.
DAHDI-260
voicebus-squash: Adding the wq name.
git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@6572 a0bf4364-ded3-4de4-8d8a-66a801d63aff
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The 'suppression' default for the NLP provides better echo canceling
performance. Also ensures that the wctdm24xxp and wcte12xp driver use the
same default values.
git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@6568 a0bf4364-ded3-4de4-8d8a-66a801d63aff
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git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@6564 a0bf4364-ded3-4de4-8d8a-66a801d63aff
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level defaults when echo can is freed. (Previously they were zero'd out)
DAHDI-257
git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@6562 a0bf4364-ded3-4de4-8d8a-66a801d63aff
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DAHDI-253
git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@6553 a0bf4364-ded3-4de4-8d8a-66a801d63aff
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Echo cancelers are now able to report if they are able to automatically disable
their NLP portions in the presence of tones in the audio stream. Also, the
interface is changed to allow user space to just disable the NLP portion of the
echo canceler. These changes improve fax and modem handling in DAHDI.
This commit merges in the changes on
http://svn.digium.com/svn/dahdi/linux/team/kpfleming/echocan_work
Patch by: kpfleming
Also contains improvements to CED tone detection.
(closes issue #13286)
Reported by: viniciusfontes
git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@6529 a0bf4364-ded3-4de4-8d8a-66a801d63aff
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The voicebus library was previously linked into both the wcte12xp and wctdm24xxp
drivers. It is now broken out into it's own module and the common parts of the
vpmadt032 interface are now located in that module to reduce duplication between
the wcte12xp and wctdm24xxp drivers.
git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@6527 a0bf4364-ded3-4de4-8d8a-66a801d63aff
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