On 08/07/2017 02:28 PM, Takashi Sakamoto wrote:

On Aug 7 2017 16:43, Oleksandr Andrushchenko wrote:
From: Oleksandr Andrushchenko <oleksandr_andrushche...@epam.com>

This patch series adds support for Xen [1] para-virtualized
sound frontend driver. It implements the protocol from
include/xen/interface/io/sndif.h with the following limitations:
- mute/unmute is not supported
- get/set volume is not supported
Volume control is not supported for the reason that most of the
use-cases (at the moment) are based on scenarious where
unprivileged OS (e.g. Android, AGL etc) use software mixers.

Both capture and playback are supported.

Thank you,

[1] https://xenproject.org/

Oleksandr Andrushchenko (11):
   ALSA: vsnd: Implement driver's probe/remove
   ALSA: vsnd: Implement Xen bus state handling
   ALSA: vsnd: Read sound driver configuration from Xen store
   ALSA: vsnd: Implement Xen event channel handling
   ALSA: vsnd: Implement handling of shared buffers
   ALSA: vsnd: Introduce ALSA virtual sound driver
   ALSA: vsnd: Initialize virtul sound card
   ALSA: vsnd: Add timer for period interrupt emulation
   ALSA: vsnd: Implement ALSA PCM operations
   ALSA: vsnd: Implement communication with backend
   ALSA: vsnd: Introduce Kconfig option to enable Xen PV sound

  sound/drivers/Kconfig     |   12 +
  sound/drivers/Makefile    |    2 +
sound/drivers/xen-front.c | 2029 +++++++++++++++++++++++++++++++++++++++++++++
  3 files changed, 2043 insertions(+)

As a quick glance of your first patch, it's apparently based on your local working branch.
sorry about that, I based the changes on v4.13-rc3 kernel sources
I'd like you to post patchset again, which were rebased on current upstream[1], so that code reviewers can do their work.
sure, will do that now

[1] 'for-next' branch in Iwai-san's tree


Takashi Sakamoto

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