From: Robert Jarzmik <robert.jarzmik@free.fr>
To: Hans Verkuil <hverkuil@xs4all.nl>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>,
Guennadi Liakhovetski <g.liakhovetski@gmx.de>,
Jiri Kosina <trivial@kernel.org>,
linux-kernel@vger.kernel.org, linux-media@vger.kernel.org
Subject: Re: [PATCH v3 09/14] media: platform: pxa_camera: add buffer sequencing
Date: Mon, 15 Aug 2016 16:42:38 +0200 [thread overview]
Message-ID: <87inv2qejl.fsf@belgarion.home> (raw)
In-Reply-To: <9883272f-cffd-e550-f784-32977bace0c0@xs4all.nl> (Hans Verkuil's message of "Mon, 15 Aug 2016 15:31:14 +0200")
Hans Verkuil <hverkuil@xs4all.nl> writes:
> On 08/15/2016 03:26 PM, Robert Jarzmik wrote:
>> Robert Jarzmik <robert.jarzmik@free.fr> writes:
>> I've seen no documentation on the rules applicable to this sequence number:
>> - should it be reset if a "start streaming" operation occurs ?
>
> start_streaming is the recommended place for setting the counter to 0. It's what
> v4l2-compliance expects.
>
> It is not documented since 1) not every driver does this and 2) there may
> be cases where this behavior is not desired.
>
> That said, I have yet to see a driver where zeroing this in start_streaming
> is not appropriate.
Thanks for the information Hans, I'll modify this patch accordingly.
Cheers.
--
Robert
next prev parent reply other threads:[~2016-08-15 14:42 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-08 19:30 [PATCH v3 00/14] pxa_camera transition to v4l2 standalone device Robert Jarzmik
2016-08-08 19:30 ` [PATCH v3 01/14] media: mt9m111: make a standalone v4l2 subdevice Robert Jarzmik
2016-08-08 19:30 ` [PATCH v3 02/14] media: mt9m111: prevent module removal while in use Robert Jarzmik
2016-08-13 18:40 ` Hans Verkuil
2016-08-14 19:31 ` Robert Jarzmik
2016-08-08 19:30 ` [PATCH v3 03/14] media: mt9m111: use only the SRGB colorspace Robert Jarzmik
2016-08-08 19:30 ` [PATCH v3 04/14] media: mt9m111: move mt9m111 out of soc_camera Robert Jarzmik
2016-08-08 19:30 ` [PATCH v3 05/14] media: platform: pxa_camera: convert to vb2 Robert Jarzmik
2016-08-13 9:25 ` Robert Jarzmik
2016-08-13 9:29 ` Hans Verkuil
2016-08-13 11:15 ` Robert Jarzmik
2016-08-08 19:30 ` [PATCH v3 06/14] media: platform: pxa_camera: trivial move of functions Robert Jarzmik
2016-08-08 19:30 ` [PATCH v3 07/14] media: platform: pxa_camera: introduce sensor_call Robert Jarzmik
2016-08-08 19:30 ` [PATCH v3 08/14] media: platform: pxa_camera: make printk consistent Robert Jarzmik
2016-08-08 19:30 ` [PATCH v3 09/14] media: platform: pxa_camera: add buffer sequencing Robert Jarzmik
2016-08-15 13:26 ` Robert Jarzmik
2016-08-15 13:31 ` Hans Verkuil
2016-08-15 14:42 ` Robert Jarzmik [this message]
2016-08-08 19:30 ` [PATCH v3 10/14] media: platform: pxa_camera: remove set_crop Robert Jarzmik
2016-08-13 18:50 ` Hans Verkuil
2016-08-14 19:29 ` Robert Jarzmik
2016-08-08 19:30 ` [PATCH v3 11/14] media: platform: pxa_camera: make a standalone v4l2 device Robert Jarzmik
2016-08-13 18:58 ` Hans Verkuil
2016-08-14 19:30 ` Robert Jarzmik
2016-08-08 19:30 ` [PATCH v3 12/14] media: platform: pxa_camera: add debug register access Robert Jarzmik
2016-08-13 18:46 ` Hans Verkuil
2016-08-14 19:30 ` Robert Jarzmik
2016-08-08 19:30 ` [PATCH v3 13/14] media: platform: pxa_camera: change stop_streaming semantics Robert Jarzmik
2016-08-08 19:30 ` [PATCH v3 14/14] media: platform: pxa_camera: move pxa_camera out of soc_camera Robert Jarzmik
2016-08-15 10:04 ` Robert Jarzmik
2016-08-08 20:16 ` [PATCH v3 00/14] pxa_camera transition to v4l2 standalone device Hans Verkuil
2016-08-13 19:02 ` Hans Verkuil
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