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+Multimedia-chat-meeting-2018-04-19
+
+10:24 < pinchartl> anyway, let's get started
+10:24 < pinchartl> Topic 1. Status Check for the Multimedia Tasks
+10:24 < pinchartl> * Jacopo
+10:24 < pinchartl> Since last meeting:
+10:24 < pinchartl> - V3M Eagle display enablement
+10:24 < pinchartl> Patches have been posted as "[PATCH v2 0/4] V3M-Eagle HDMI output enablement".
+10:24 < pinchartl> - LVDS decoder support
+10:24 < pinchartl> Patches have been posted as "[PATCH v9 0/2] drm: Add Thine THC63LVD1024 LVDS decoder bridge". Not yet but almost ready features includes
+10:24 < pinchartl>   - Add static image format support to DRM bridges
+10:24 < pinchartl>   - Make du_lvds use DRM bridge image format
+10:24 < pinchartl> - Patch review
+10:24 < pinchartl> Until next meeting:
+10:24 < pinchartl> - VIN enablement on D3 Draak
+10:24 < pinchartl> - soc_camera removal
+10:24 < pinchartl> Issues and Blockers: None
+10:24 < pinchartl> jmondi: any comment ?
+10:25 < jmondi> pinchartl: not really
+10:25 < jmondi> apart from DRM people being a bit unresponsive
+10:25 < pinchartl> please ping them
+10:25 < jmondi> and that I'm holding the DRM bridge format series beacause of that
+10:25 < jmondi> I setn v9 yesterday iirc
+10:25 < jmondi> I'll wait a few days maybe
+10:26 < pinchartl> ok
+10:26 < pinchartl> do you think it's ready to be merged ?
+10:27 < jmondi> I guess so, I have collected 3 or 4 reviewed-bys
+10:27 < jmondi> rob's one on bindings
+10:27 < jmondi> yours and Andrzej's one on driver
+10:27 < pinchartl> you can ping Archit
+10:27 < pinchartl> architt on IRC
+10:27 < jmondi> it should be good I guess
+10:27 < jmondi> I will
+10:28 < pinchartl> thank you
+10:28 < pinchartl> * Laurent
+10:28 < pinchartl> Since last meeting:
+10:28 < pinchartl> - Patch review
+10:28 < pinchartl> - Additional tasks preparation
+10:28 < pinchartl> - LVDS OF overlay fixes
+10:28 < pinchartl> Until next meeting:
+10:28 < pinchartl> - Get the GMSL patches posted to public mailing lists
+10:28 < pinchartl> - Upstream pending VSP patches
+10:28 < pinchartl> - Trip to Japan (29/04 to 17/05)
+10:28 < pinchartl> Issues and blockers: None
+10:28 < pinchartl> any question ?
+10:29 < dammsan> will you post GMSL before going to Japan? =)
+10:29 < pinchartl> I want to
+10:29 < morimoto> you came to Japan from 29/04 ?
+10:29 < pinchartl> yes, and I will be in Tokyo from 14/04 to 17/04
+10:30 < geertu>  /05?
+10:30 < pinchartl> sorry, 14/05 to 17/05
+10:30 < morimoto> for 1 month !?
+10:30 < jmondi> 2019?
+10:30  * jmondi hides
+10:31 < pinchartl> landing in Haneda on 14/05 at 14:55 and leaving from Narita on 17/05 at 09:50
+10:31 < morimoto> And came again in Jun ?
+10:31 < pinchartl> two weeks and a half :-)
+10:31 < pinchartl> yes, then coming back in June
+10:31 < morimoto> sound nice
+10:32 < pinchartl> I hope it will be :-)
+10:32 < pinchartl> it will be my first Golden Week in Japan
+10:33 < pinchartl> * Magnus:
+10:33 < pinchartl> Since last meeting: None
+10:33 < pinchartl> Until next meeting: None
+10:33 < pinchartl> Issues and blockers: None
+10:33 < morimoto> :)
+10:33 < pinchartl> dammsan: any comment ? :-)
+10:34 < pinchartl> * Morimoto-san
+10:34 < pinchartl> Since last meeting:
+10:34 < pinchartl> - Wash up random request from BSP team
+10:34 < pinchartl> As far as understood, almost all BSP team requests are already solved. The only exception is "[PATCH] media: rcar-vin: Fix image alignment for setting pre clipping".
+10:34 < pinchartl> Until next meeting: None
+10:34 < pinchartl> Issues and Blockers: None
+10:34 < pinchartl> morimoto: any comment ?
+10:34 < dammsan> no comment from me
+10:34 < morimoto> no comment
+10:34 < pinchartl> * Niklas
+10:34 < pinchartl> Since last meeting:
+10:34 < pinchartl> - [PATCH v14 00/33] rcar-vin: Add Gen3 with media controller
+10:34 < pinchartl> Hans has sent a pull-request for VIN Gen3 patches \o/
+10:34 < pinchartl> - Found issue on v4.17-rc1 related to V4L2 and ADV748x, see blockers
+10:34 < pinchartl> - Addressed all review comments on the CSI-2 driver, will repost after syncing with Laurent
+10:34 < pinchartl> - Implemented Morimoto-sans request of extending media bus format support for VIN and CSI-2
+10:34 < pinchartl> - [PATCH] media: entity: fix spelling for media_entity_get_fwnode_pad()
+10:34 < pinchartl> Until next meeting:
+10:34 < pinchartl> - VIN and CSI-2 enhancements and upport
+10:34 < pinchartl> Once VIN Gen3 and/or CSI-2 driver is in media-tree start posting up-port patches and patches held back for VIN due to dependency on Gen3 patches.
+10:34 < pinchartl> - Start M3-N VIN integration
+10:34 < pinchartl> Issues and blockers:
+10:34 < pinchartl> - CMA problems on v4.17-rc1
+10:34 < pinchartl> v4.17-rc1 brings in bad8c6c0b1144694 ("mm/cma: manage the memory of the CMA area by using the ZONE_MOVABLE"). This issue brings a issue we are already aware of into a critical problem.
+10:34 < pinchartl> The patch in question plays with CMA, The technical analysis is currently missing, but the result however is very noticeable. If the format configured in the media graph don't match reality more data then is allocated in the capture buffer can be written to the buffer. This was known before but this change appears to place the capture closer to other data which now easily crashes the whole system.
+10:34 < pinchartl> To make matters worse there seems to be no way to set the video standard (PAL/NTSC/..) on a subdevice that is part of a media graph. This currently makes CVBS capture dangerous to to use with anything but a NTSC source as that is the adv748x drivers default standard. Niklas has developed a patch for the kernel subdevice implementation that allows for QUERYSTD, G_STD and S_STD to be controlled as for a 
+10:34 < pinchartl> video device, similar work have already been done for EDID and other similar IOCTLS.
+10:34 < pinchartl> Before posting the patch Niklas wanted to discuss the solution with the multimedia team. As extending the IOCTLS that are allowed for a subdev might be useful the core of the problem is still the same. If the user selects NTSC and feed it a PAL source things will crash which is not really good. One idea is to have the get_fmt/set_fmt of the AFE in the adv748x detect the current standard and return 
+10:34 < pinchartl> format based on that, but we tried that in the past and it was rejected.
+10:35 < dammsan> pinchartl: i want to ask you about ipmmu support at some point
+10:35 < pinchartl> dammsan: sure, let's discuss that after the status update
+10:35 < pinchartl> neg: any comment on done/todo ?
+10:36 < pinchartl> have we lost Niklas ?
+10:37 < pinchartl> seems so
+10:37 < dammsan> pinchartl: just fyi there is a measels outbreak in okinawa now
+10:37 < pinchartl> I'll reply to his issue by e-mail then
+10:37 < pinchartl> dammsan: lovely...
+10:38 < dammsan> you might want to get a vaccine if you are not covered already
+10:38 < pinchartl> I think I got vaccinated when I was a kid
+10:38 < dammsan> our generation of japanese are not fully vaccinated unfortunately
+10:38 < dammsan> so it seems to be a bit of a mess
+10:39 < dammsan> so i would enjoy seeing you _before_ your okinawa trip
+10:39 < geertu> pinchartl: As a Belgian, you should have gotten either the disease, or the vaccine.
+10:40 < jmondi> I got vaccinated when I was a kid, but they gave me another shot before I left for thailand
+10:40 < pinchartl> dammsan: I'm afraid that would be difficult :-/
+10:41 < dammsan> might be good to be careful
+10:41 < jmondi> pinchartl: you may want to ask, they told me the new raccomandation is to have 4 shots not just 3 as it used to
+10:41 < dammsan> pinchartl: yeah
+10:41 < pinchartl> as I'll land on the 30th in the morning in Narita and leave from Haneda on the same day in the afternoon
+10:41 < jmondi> ofc you'll be autistic after that according to novax.info and other reliable sources
+10:42 < dammsan> pinchartl: maybe we can meet at haneda?
+10:42 < geertu> jmondi: Only 2 shots for my kids, according to their vaccination card.
+10:42 < dammsan> anyway lets discuss later
+10:42 < pinchartl> dammsan: :-)
+10:42 < pinchartl> so neg is absent
+10:42 < pinchartl> let's move on
+10:43 < pinchartl> Topic 2. BSP Team Requests
+10:43 < pinchartl> - kms-test-brxalloc.py failures
+10:43 < pinchartl> The test team noticed that kms-test-brxalloc.py failed. The problem has been reported to Laurent who only came back from holidays yesterday. It will be investigated this week.
+10:44 < pinchartl> morimoto: is that ok ?
+10:44 < morimoto> Not yet OK. Is this kernel .config settings ?
+10:44 < morimoto> Ahh.. sorry.
+10:45 < morimoto> OK, please report to me
+10:45 < pinchartl> sure :-)
+10:45 < pinchartl> that's all I have for questions from the BSP team, anything else ?
+10:45 < morimoto> Other questions are already solved. thank you for your help M/M member
+10:46 < pinchartl> you're welcome
+10:47 < pinchartl> Topic 3. Discussions
+10:47 < pinchartl> dammsan: you wanted to discuss IPMMU ?
+10:48 < dammsan> right, sorry for the delay
+10:48 < dammsan> i noticed a topic branch in latest renesas-drivers
+10:49 < pinchartl> yes ?
+10:50 < dammsan> drm-du-iommu-v1-20171115
+10:50 < dammsan> i was wondering if there is any special target date for this one?
+10:50 < dammsan> for upstream merge i mean
+10:51 < pinchartl> let me have a look
+10:51 < dammsan> thanks
+10:51 < dammsan> just wanted to ping you about it if you had forgotten =)
+10:51 < pinchartl> no there isn't. Daniel Vetter has pushed back on my proposal, I have to either convince him, or come up with a different implementation
+10:52 < pinchartl> it's part of the backlog I need to handle
+10:52 < dammsan> ok no stress
+10:52 < pinchartl> I've decided to focus on review first in order to avoid blocking other people's backlogs :-)
+10:52 < dammsan> slow and steady
+10:52 < dammsan> sounds good
+10:53 < dammsan> thanks
+10:53 < pinchartl> you're welcome
+10:53 < dammsan> and i wonder about vin for r-car gen3
+10:53 < dammsan> niklas is carrying a pretty heavy burden it seems to me
+10:54 < pinchartl> we should ask Niklas, but as far as I know it will be merged in v4.18-rc1
+10:54 < dammsan> that would be good
+10:55 < pinchartl> any other question ?
+10:55 < dammsan> it almost looks like the ipmmu will be free of errata before vin gets support upstream =)
+10:55 < pinchartl> :-D
+10:55 < dammsan> (obviously a joke)
+10:56 < dammsan> apart from that nothing special from my side
+10:57 < pinchartl> if there's no other question
+10:57 < pinchartl> Topic 4. Additional Tasks for 2018 Q2
+10:57 < pinchartl> dammsan: have all additional tasks for Q2/1 been submitted ?
+10:58 < dammsan> yes and no
+10:58 < pinchartl> I like the yes part of that answer
+10:58 < dammsan> paper work for jacopo has one final step that will happen tomorrow
+10:58 < dammsan> and i have not seen any signed document from your side either =)
+10:59 < dammsan> but apart from that we're good
+10:59 < pinchartl> but no blocker ?
+10:59 < dammsan> no blocker
+10:59 < pinchartl> I was on holidays, hence the lack of signature :-)
+10:59 < pinchartl> for Q2/2
+10:59 < dammsan> i was waiting for papers myself too
+10:59 < pinchartl> we have the following candidates
+10:59 < pinchartl> - Jacopo: VIN scaler (UDS)
+10:59 < pinchartl> - Kieran: DMA virtualization
+10:59 < pinchartl> - Laurent: Display virtualization performance improvements
+10:59 < pinchartl> - Niklas: VIN and CSI-2 power management
+10:59 < pinchartl> - Ulrich: DU LVDS dual-link mode, DU LVDS PLL and DU DPLL fixes
+10:59 < pinchartl> we need to estimate the effort
+11:00 < dammsan> from my side
+11:00 < pinchartl> but it's already known that VIN scaler would take more than 5 days, which is the budget available for Q2/2 for Jacopo
+11:00 < dammsan> i think the virtualization bits are important
+11:00 < pinchartl> that's why I've included them :-)
+11:00 < dammsan> but the rest smells like best effort base task activity in my mind
+11:00 < pinchartl> what's the different between base and additional from that point of view ?
+11:01 < pinchartl> I mean, any work could be done under either umbrella
+11:01 < dammsan> i don't want to order more VIN stuff when things are not in upstream yet
+11:01 < dammsan> to give you time     to focus on getting that sorted
+11:01 < dammsan> only paper work is teh difference
+11:02 < pinchartl> that at least matches my understanding :-)
+11:02 < pinchartl> regarding VIN
+11:02 < pinchartl> a pull request has been submitted to Mauro
+11:02 < pinchartl> so Gen3 support will be in v4.18-rc1
+11:03 < dammsan> sounds good
+11:03 < dammsan> i guess batch 1 additional adds on top of that perhaps
+11:03 < pinchartl> https://www.spinics.net/lists/linux-media/msg132192.html
+11:03 < pinchartl> it was sent on Monday
+11:03 < pinchartl> I expect it to be merged in the very near future
+11:04 < pinchartl> so I don't think it would block VIN development for Q2/2
+11:05 < dammsan> well, i think we've been carrying VIN for quite a few kernel versions
+11:05 < pinchartl> yes, and now it's going upstream :-)
+11:05 < dammsan> i'm currently in the "i believe it when i see it" mode
+11:06 < pinchartl> that's why I pasted
+11:06 < pinchartl> https://www.spinics.net/lists/linux-media/msg132192.html
+11:06 < dammsan> excellent - looking forward to that!
+11:06 < pinchartl> :-)
+11:07 < dammsan> that's good
+11:07 < dammsan> so at this point i'm inclined to move forward with the virtualization tasks for you and kieran
+11:07 < dammsan> i am hoping that ulrich can do some early memory autodetection hacking
+11:08 < dammsan> but i'm yet to hear back from him
+11:08 < pinchartl> early memory autodetection ?
+11:08 < dammsan> that would take care of all members with larger additional task pools
+11:08 < dammsan> yeah some packages for R-Car Gen3 come with more memory mounted
+11:08 < dammsan> BSP team is busy
+11:09 < dammsan> shooting themselves in the foot by duplicating DTS
+11:09 < dammsan> lets see how much time he needs for the memory stuff
+11:09 < pinchartl> detection in U-Boot with automatic .dtb updates ?
+11:09 < dammsan> yeah something like that
+11:10 < dammsan> maybe board/package specific ATF
+11:10 < dammsan> and read-only memory controller configuration
+11:10 < dammsan> and some magic in u-boot to populate the memory nodes during runtime
+11:10 < pinchartl> ok, if it's in U-Boot it sounds good to me
+11:10 < dammsan> first a prototype for ulrich
+11:10 < dammsan> and if it works out well then we will involve marek and perhaps otehrs
+11:12 < geertu> dammsan: U-Boot already does the /memory population magic
+11:12 < pinchartl> ok, so I'll put the DU tasks on hold
+11:12 < dammsan> geertu: that's good - i guess we just need to learn how to detect
+11:13 < geertu> dammsan: Indeed
+11:13 < dammsan> geertu: and perhaps strip away some nodes from upstream DTS at some point later on if needed
+11:13 < pinchartl> last topic
+11:13 < pinchartl> Topic 5. Next Meeting
+11:13 < pinchartl> The next meeting will be held three weeks from now, on Wednesday 2018-05-09 at 
+11:13 < pinchartl> 09:00 BST / 10:00 CEST / 11:00 EEST / 17:00 JST as a combined meeting with the 
+11:13 < pinchartl> Core and I/O groups.
+11:13 < pinchartl> Please note that this it the time of the multimedia portion of the meeting, 
+11:13 < pinchartl> the I/O and core portions will start an hour earlier:
+11:13 < pinchartl> I/O:    08:00 BST / 09:00 CEST / 10:00 EEST / 16:00 JST
+11:13 < pinchartl> Core:   08:30 BST / 09:30 CEST / 10:30 EEST / 16:30 JST
+11:13 < pinchartl> MM:     09:00 BST / 10:00 CEST / 11:00 EEST / 17:00 JST
+11:13 < pinchartl> I will very likely not be able to join the meeting, in which case I will appoint a deputy.
+11:13 < geertu> dammsan: Nah, Xen has already learned to ignore duplicate memory blocks ;-)
+11:14 < dammsan> sounds good
+11:14 < dammsan> geertu: yum
+11:15 < pinchartl> that's all I have for today
+11:15 < pinchartl> any other question ?
+11:15 < dammsan> don't eat too much goya shampure in okinawa =)
+11:16 < pinchartl> what is that ?
+11:17 < dammsan> guya is the bitter cucumber thing
+11:17 < shimoda> maybe Goya Chample?
+11:17 < dammsan> shampure is like pad thai
+11:17 < shimoda> ゴーヤチャンプル
+11:17 < pinchartl> ah that :-)
+11:18 < dammsan> anyway, enjoy your time off!
+11:18 < pinchartl> I will
+11:18 < pinchartl> thank you all for attending the meeting today