From: Hans Verkuil <hverkuil@xs4all.nl>
To: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Steve Longerbeam <slongerbeam@gmail.com>,
robh+dt@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org,
kernel@pengutronix.de, fabio.estevam@nxp.com,
linux@armlinux.org.uk, mchehab@kernel.org, nick@shmanahar.org,
markus.heiser@darmarIT.de,
laurent.pinchart+renesas@ideasonboard.com, bparrot@ti.com,
geert@linux-m68k.org, arnd@arndb.de, sudipm.mukherjee@gmail.com,
minghsiu.tsai@mediatek.com, tiffany.lin@mediatek.com,
jean-christophe.trotin@st.com, horms+renesas@verge.net.au,
niklas.soderlund+renesas@ragnatech.se, robert.jarzmik@free.fr,
songjun.wu@microchip.com, andrew-ct.chen@mediatek.com,
gregkh@linuxfoundation.org, shuah@kernel.org,
sakari.ailus@linux.intel.com, pavel@ucw.cz,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-media@vger.kernel.org, devel@driverdev.osuosl.org,
Steve Longerbeam <steve_longerbeam@mentor.com>
Subject: Re: [PATCH v7 00/34] i.MX Media Driver
Date: Mon, 29 May 2017 17:24:51 +0200 [thread overview]
Message-ID: <3de70e29-8429-1b56-8a01-84ca49f4fd89@xs4all.nl> (raw)
In-Reply-To: <58c82482-d7d0-93cb-1e12-9749233bc5f3@xs4all.nl>
On 05/29/2017 04:21 PM, Hans Verkuil wrote:
> On 05/29/2017 04:15 PM, Philipp Zabel wrote:
>> On Mon, 2017-05-29 at 15:46 +0200, Hans Verkuil wrote:
>>> Hi Steve,
>>>
>>> On 05/25/2017 02:29 AM, Steve Longerbeam wrote:
>>>> In version 7:
>>>>
>>>> - video-mux: switched to Philipp's latest video-mux driver and updated
>>>> bindings docs, that makes use of the mmio-mux framework.
>>>>
>>>> - mmio-mux: includes Philipp's temporary patch that adds mmio-mux support
>>>> to video-mux driver, until mux framework is merged.
>>>>
>>>> - mmio-mux: updates to device tree from Philipp that define the i.MX6 mux
>>>> devices and modifies the video-mux device to become a consumer of the
>>>> video mmio-mux.
>>>>
>>>> - minor updates to Documentation/media/v4l-drivers/imx.rst.
>>>>
>>>> - ov5640: do nothing if entity stream count is greater than 1 in
>>>> ov5640_s_stream().
>>>>
>>>> - Previous versions of this driver had not tested the ability to enable
>>>> multiple independent streams, for instance enabling multiple output
>>>> pads from the imx6-mipi-csi2 subdevice, or enabling both prpenc and
>>>> prpvf outputs. Marek Vasut tested this support and reported issues
>>>> with it.
>>>>
>>>> v4l2_pipeline_inherit_controls() used the media graph walk APIs, but
>>>> that walks both sink and source pads, so if there are multiple paths
>>>> enabled to video capture devices, controls would be added to the wrong
>>>> video capture device, and no controls added to the other enabled
>>>> capture devices.
>>>>
>>>> These issues have been fixed. Control inheritance works correctly now
>>>> even with multiple enabled capture paths, and (for example)
>>>> simultaneous capture from prpenc and prpvf works also, and each with
>>>> independent scaling, CSC, and controls. For example prpenc can be
>>>> capturing with a 90 degree rotation, while prpvf is capturing with
>>>> vertical flip.
>>>>
>>>> So the v4l2_pipeline_inherit_controls() patch has been dropped. The
>>>> new version of control inheritance could be made generically available,
>>>> but it would be more involved to incorporate it into v4l2-core.
>>>>
>>>> - A new function imx_media_fill_default_mbus_fields() is added to setup
>>>> colorimetry at sink pads, and these are propagated to source pads.
>>>>
>>>> - Ensure that the current sink and source rectangles meet alignment
>>>> restrictions before applying a new rotation control setting in
>>>> prp-enc/vf subdevices.
>>>>
>>>> - Chain the s_stream() subdev calls instead of implementing a custom
>>>> stream on/off function that attempts to call a fixed set of subdevices
>>>> in a pipeline in the correct order. This also simplifies imx6-mipi-csi2
>>>> subdevice, since the correct MIPI CSI-2 startup sequence can be
>>>> enforced completely in s_stream(), and s_power() is no longer
>>>> required. This also paves the way for more arbitrary OF graphs
>>>> external to the i.MX6.
>>>>
>>>> - Converted the v4l2_subdev and media_entity ops structures to const.
>>>
>>> What is the status as of v7?
>>>
>>> From what I can tell patch 2/34 needs an Ack from Rob Herring, patches
>>> 4-14 are out of scope for the media subsystem, patches 20-25 and 27-34
>>> are all staging (so fine to be merged from my point of view).
>>>
>>> I'm not sure if patch 26 (defconfig) should be applied while the imx
>>> driver is in staging. I would suggest that this patch is moved to the end
>>> of the series.
>>>
>>> That leaves patches 15-19. I replied to patch 15 with a comment, patches
>>> 16-18 look good to me, although patches 17 and 18 should be combined to one
>>> patch since patch 17 won't compile otherwise.
>>
>> Is this a problem? It won't break any builds as patch 17 depends on
>> CONFIG_MULTIPLEXER, which doesn't exist yet. I'm fine with merging the
>> two patches, though.
>
> You are right, but it is weird. I think I would prefer to have these two
> merged and the #ifdef CONFIG_MULTIPLEXER bits removed. Just a note in the
> commit log that this should be converted to the multiplexer when that gets
> merged would be enough.
>
> Dead code in drivers/media should be avoided because that's what this
> driver currently has.
Thanks for those updates! That really leaves just an Ack for patch 2/34.
Sooo close!
Regards,
Hans
next prev parent reply other threads:[~2017-05-29 15:25 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-25 0:29 [PATCH v7 00/34] i.MX Media Driver Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 01/34] dt-bindings: Add bindings for video-multiplexer device Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 02/34] [media] dt-bindings: Add bindings for i.MX media driver Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 03/34] [media] dt/bindings: Add bindings for OV5640 Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 04/34] ARM: dts: imx6qdl: add multiplexer controls Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 05/34] ARM: dts: imx6qdl: Add compatible, clocks, irqs to MIPI CSI-2 node Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 06/34] ARM: dts: imx6qdl: Add video multiplexers, mipi_csi, and their connections Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 07/34] ARM: dts: imx6qdl: add capture-subsystem device Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 08/34] ARM: dts: imx6qdl-sabrelite: remove erratum ERR006687 workaround Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 09/34] ARM: dts: imx6-sabrelite: add OV5642 and OV5640 camera sensors Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 10/34] ARM: dts: imx6-sabresd: " Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 11/34] ARM: dts: imx6-sabreauto: create i2cmux for i2c3 Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 12/34] ARM: dts: imx6-sabreauto: add reset-gpios property for max7310_b Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 13/34] ARM: dts: imx6-sabreauto: add pinctrl for gpt input capture Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 14/34] ARM: dts: imx6-sabreauto: add the ADV7180 video decoder Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 15/34] add mux and video interface bridge entity functions Steve Longerbeam
2017-05-29 13:37 ` Hans Verkuil
2017-05-29 13:51 ` Philipp Zabel
2017-05-29 13:52 ` Hans Verkuil
2017-05-25 0:29 ` [PATCH v7 16/34] [media] add Omnivision OV5640 sensor driver Steve Longerbeam
2017-05-29 13:39 ` Hans Verkuil
2017-05-29 15:55 ` Sakari Ailus
2017-05-29 21:50 ` Steve Longerbeam
2017-05-30 6:56 ` Sakari Ailus
2017-06-03 18:02 ` Steve Longerbeam
2017-06-04 18:00 ` Steve Longerbeam
2017-06-07 12:31 ` Sakari Ailus
2017-05-31 19:58 ` Pavel Machek
2017-06-01 8:26 ` Sakari Ailus
2017-06-01 8:43 ` exposure vs. exposure_absolute was " Pavel Machek
2017-06-03 19:38 ` Steve Longerbeam
2017-06-03 19:51 ` Pavel Machek
2017-06-03 21:57 ` Sakari Ailus
2017-06-03 22:17 ` Pavel Machek
2017-06-04 4:46 ` Steve Longerbeam
2017-06-07 12:31 ` Sakari Ailus
2017-05-25 0:29 ` [PATCH v7 17/34] platform: add video-multiplexer subdevice driver Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 18/34] platform: video-mux: include temporary mmio-mux support Steve Longerbeam
2017-05-25 7:51 ` [PATCH] platform: video-mux: fix ptr_ret.cocci warnings kbuild test robot
2017-05-25 7:51 ` [PATCH v7 18/34] platform: video-mux: include temporary mmio-mux support kbuild test robot
2017-05-25 0:29 ` [PATCH v7 19/34] media: Add userspace header file for i.MX Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 20/34] media: Add i.MX media core driver Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 21/34] media: imx: Add Capture Device Interface Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 22/34] media: imx: Add CSI subdev driver Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 23/34] media: imx: Add VDIC " Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 24/34] media: imx: Add IC subdev drivers Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 25/34] media: imx: Add MIPI CSI-2 Receiver subdev driver Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 26/34] ARM: imx_v6_v7_defconfig: Enable staging video4linux drivers Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 27/34] media: imx: csi: add support for bayer formats Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 28/34] media: imx: csi: increase burst size for YUV formats Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 29/34] media: imx: csi: add frame skipping support Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 30/34] media: imx: csi: add sink selection rectangles Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 31/34] media: imx: csi: add frame size/interval enumeration Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 32/34] media: imx: capture: add frame sizes/interval enumeration Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 33/34] media: imx: set and propagate default field, colorimetry Steve Longerbeam
2017-05-25 0:29 ` [PATCH v7 34/34] media: imx: Drop warning upon multiple S_STREAM disable calls Steve Longerbeam
2017-05-29 13:46 ` [PATCH v7 00/34] i.MX Media Driver Hans Verkuil
2017-05-29 14:15 ` Philipp Zabel
2017-05-29 14:21 ` Hans Verkuil
2017-05-29 15:24 ` Hans Verkuil [this message]
2017-05-29 15:36 ` Sakari Ailus
2017-05-29 16:29 ` Hans Verkuil
2017-05-29 18:12 ` Steve Longerbeam
2017-05-31 20:11 ` Pavel Machek
2017-05-29 17:23 ` Steve Longerbeam
2017-05-29 17:29 ` Hans Verkuil
2017-06-02 0:25 ` Tim Harvey
2017-06-02 0:43 ` Steve Longerbeam
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