From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: linux-media@vger.kernel.org, linux-omap@vger.kernel.org,
linux-kernel@vger.kernel.org, lrg@slimlogic.co.uk,
sakari.ailus@maxwell.research.nokia.com, lennart@poettering.net
Subject: Re: [RFC/PATCH v6 09/12] media: Entity locking and pipeline management
Date: Thu, 25 Nov 2010 16:47:44 +0100 [thread overview]
Message-ID: <201011251647.45488.laurent.pinchart@ideasonboard.com> (raw)
In-Reply-To: <20101125135351.GD24208@opensource.wolfsonmicro.com>
Hi Mark,
On Thursday 25 November 2010 14:53:51 Mark Brown wrote:
> On Thu, Nov 25, 2010 at 03:28:16AM +0100, Laurent Pinchart wrote:
> > Link states must not be modified while streaming is in progress on a
> > graph they belong or connect to. The entity locking API helps drivers
> > enforcing that requirement.
>
> This is not desirable for embedded audio - for example, it is very
> common to wish to switch from headphone to speaker and back mid
> playback, or to move between headset, speakerphone and handset modes on
> a phone. This is normally implemented by reconfiguring the output paths
> at runtime without interrupting applications.
Agreed. The locking should be made optional. I'll work on that.
--
Regards,
Laurent Pinchart
next prev parent reply other threads:[~2010-11-25 15:47 UTC|newest]
Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-25 2:28 [RFC/PATCH v6 00/12] Media controller (core and V4L2) Laurent Pinchart
2010-11-25 2:28 ` [RFC/PATCH v6 01/12] media: Media device node support Laurent Pinchart
2010-11-25 2:28 ` [RFC/PATCH v6 02/12] media: Media device Laurent Pinchart
2010-11-25 9:33 ` Clemens Ladisch
2010-11-25 14:42 ` Laurent Pinchart
2010-11-25 2:28 ` [RFC/PATCH v6 03/12] media: Entities, pads and links Laurent Pinchart
2010-11-25 9:38 ` [RFC/PATCH v6 03/12] [alsa-devel] " Clemens Ladisch
2010-11-25 9:38 ` [RFC/PATCH v6 03/12] " Clemens Ladisch
2010-11-25 13:41 ` [RFC/PATCH v6 03/12] [alsa-devel] " Mark Brown
2010-11-25 13:41 ` [RFC/PATCH v6 03/12] " Mark Brown
2010-11-25 15:29 ` [RFC/PATCH v6 03/12] [alsa-devel] " Laurent Pinchart
2010-11-25 15:35 ` Mark Brown
2010-11-25 15:35 ` [RFC/PATCH v6 03/12] " Mark Brown
2010-11-25 15:21 ` [RFC/PATCH v6 03/12] [alsa-devel] " Laurent Pinchart
2010-11-25 15:28 ` Mark Brown
2010-11-25 15:28 ` [RFC/PATCH v6 03/12] " Mark Brown
2010-11-26 9:10 ` [RFC/PATCH v6 03/12] [alsa-devel] " Clemens Ladisch
2010-11-26 9:10 ` [RFC/PATCH v6 03/12] " Clemens Ladisch
2010-12-13 16:10 ` [alsa-devel] " Clemens Ladisch
2010-12-13 16:10 ` Clemens Ladisch
2010-12-14 12:00 ` [alsa-devel] " Laurent Pinchart
2010-12-14 12:40 ` Hans Verkuil
2010-12-14 12:53 ` Laurent Pinchart
2010-12-14 12:53 ` Laurent Pinchart
2010-12-14 13:49 ` [alsa-devel] " Clemens Ladisch
2010-12-14 13:49 ` Clemens Ladisch
2010-12-14 23:50 ` [alsa-devel] " Laurent Pinchart
2010-12-14 23:50 ` Laurent Pinchart
2010-12-21 16:49 ` [alsa-devel] " Hans Verkuil
2010-12-14 13:31 ` Clemens Ladisch
2010-12-14 13:31 ` Clemens Ladisch
2010-12-14 13:54 ` [alsa-devel] " Takashi Iwai
2010-12-14 13:54 ` Takashi Iwai
2010-12-14 14:25 ` [alsa-devel] " Laurent Pinchart
2010-12-14 14:25 ` Laurent Pinchart
2010-12-14 15:30 ` [alsa-devel] " Clemens Ladisch
2010-12-14 15:30 ` Clemens Ladisch
2010-12-14 23:30 ` Raymond Yau
2010-12-14 14:51 ` [alsa-devel] " Hans Verkuil
2010-12-14 14:57 ` Laurent Pinchart
2010-12-14 14:57 ` Laurent Pinchart
2010-12-14 14:49 ` [alsa-devel] " Sakari Ailus
2010-11-25 13:36 ` Mark Brown
2010-11-25 15:40 ` Laurent Pinchart
2010-11-25 15:49 ` Mark Brown
2010-11-26 14:13 ` Laurent Pinchart
2010-11-26 14:14 ` Mark Brown
2010-11-28 12:34 ` Laurent Pinchart
2010-11-28 15:57 ` Hans Verkuil
2010-11-25 2:28 ` [RFC/PATCH v6 04/12] media: Entity graph traversal Laurent Pinchart
2010-11-25 2:28 ` [RFC/PATCH v6 05/12] media: Reference count and power handling Laurent Pinchart
2010-11-25 13:49 ` Mark Brown
2010-11-25 15:43 ` Laurent Pinchart
2010-11-25 17:49 ` Sakari Ailus
2010-11-25 21:47 ` Mark Brown
2010-11-28 12:33 ` Laurent Pinchart
2010-11-28 18:25 ` Mark Brown
2010-11-25 2:28 ` [RFC/PATCH v6 06/12] media: Media device information query Laurent Pinchart
2010-11-25 2:28 ` [RFC/PATCH v6 07/12] media: Entities, pads and links enumeration Laurent Pinchart
2010-11-25 2:28 ` [RFC/PATCH v6 08/12] media: Links setup Laurent Pinchart
2010-11-25 2:28 ` [RFC/PATCH v6 09/12] media: Entity locking and pipeline management Laurent Pinchart
2010-11-25 13:53 ` Mark Brown
2010-11-25 15:47 ` Laurent Pinchart [this message]
2010-11-25 2:28 ` [RFC/PATCH v6 10/12] v4l: Add a media_device pointer to the v4l2_device structure Laurent Pinchart
2010-11-25 2:28 ` [RFC/PATCH v6 11/12] v4l: Make video_device inherit from media_entity Laurent Pinchart
2010-11-25 11:38 ` Hans Verkuil
2010-11-25 14:37 ` Laurent Pinchart
2010-11-25 2:28 ` [RFC/PATCH v6 12/12] v4l: Make v4l2_subdev " Laurent Pinchart
2010-11-25 14:28 ` [RFC/PATCH v6 00/12] Media controller (core and V4L2) Mark Brown
2010-11-26 14:07 ` Laurent Pinchart
[not found] ` <201012031119.36771.laurent.pinchart@ideasonboard.com>
[not found] ` <201012031306.18520.hverkuil@xs4all.nl>
2010-12-03 13:50 ` [RFC/PATCH v6 03/12] media: Entities, pads and links Laurent Pinchart
2010-12-03 14:54 ` Mark Brown
2010-12-07 17:13 ` Hans Verkuil
2010-12-07 17:55 ` Mark Brown
2010-12-07 18:11 ` Hans Verkuil
2010-12-07 19:03 ` Mark Brown
2010-12-09 12:53 ` Laurent Pinchart
2010-12-10 16:35 ` Sakari Ailus
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