Hi,
On 08/10/2017 12:03 PM, ajmalmalib4u wrote:
Hi,
I need to do sound sharing in RCar H3.
Great that there is some interest in the work we do
I'm just curious, what is the nature of your interest?
Are you going to just use that sound solution or may want
to contribute as well (development/design/testing)?
I am currently using Xen 4.8.0. Itried to patch the guest kernel(v
4.6.0) using the patch series [[RESEND1,01/12] ALSA: vsnd: Introduce
Xen para-virtualized sound frontend driver] to add the support for Xen
para-virtualized sound frontend driver which was made available a few
days ago.
I got some errors which I guess were due to the old kernel version.
the series is based on [1] which is 4.13, this is why
So I downloaded the current stable Linux 4.12.5 from kernel.org
<http://kernel.org> and tried to add the patches to it. But the patch
failed due to missing fields in snd_pcm_ops in pcm.h. As such, I had
to patch the kernel with a different patch series[[v2,02/27] ALSA:
pcm: Introduce copy_user, copy_kernel and fill_silence ops],[ALSA:
sound/isa: constify snd_kcontrol_new structures][ALSA: gus: remove
unused local flag] to add the new fields to pcm.h. Also, I had to copy
an SoC specific firmware file[r8a779x_usb3_v2.dlmem] to the
firmware directory of the kernel directory. Finally after applying all
these patches to v4.12.5 and building the kernel, I got the
snd-xen-front.ko file in sound/drivers/.
How can I test whether the sound frontend is working? Is the backend
for sound available for sndif.h?
You also need to run a user-space backend [2] in Dom0 and configure Xen
store values
(not implemented yet)
Regards,
Ajmal
Thank you,
Oleksandr
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[1]
https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git/log/?h=for-next
[2] https://github.com/xen-troops/snd_be/tree/vgpu-dev
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