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From: Eric Anholt <eric@anholt.net>
To: Martin Peres <martin.peres@linux.intel.com>, xorg-devel@lists.x.org
Cc: Manasi Navare <manasi.d.navare@intel.com>,
	dri-devel@lists.freedesktop.org
Subject: Re: [RFC PATCH xserver] modesetting: re-set the crtc's mode when link-status goes BAD
Date: Thu, 30 Mar 2017 17:37:55 -0700	[thread overview]
Message-ID: <8737due0ws.fsf@eliezer.anholt.net> (raw)
In-Reply-To: <155d45ba-503f-786d-943d-6ebc13fb2d82@linux.intel.com>


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Martin Peres <martin.peres@linux.intel.com> writes:

> On 26/01/17 14:37, Martin Peres wrote:
>> Despite all the careful planing of the kernel, a link may become
>> insufficient to handle the currently-set mode. At this point, the
>> kernel should mark this particular configuration as being broken
>> and potentially prune the mode before setting the offending connector's
>> link-status to BAD and send the userspace a hotplug event. This may
>> happen right after a modeset or later on.
>>
>> When available, we should use the link-status information to reset
>> the wanted mode.
>>
>> Signed-off-by: Martin Peres <martin.peres@linux.intel.com>
>
> The relevant kernel patches have landed in drm-tip about a month ago.
>
> Eric, would you mind providing feedback on or merging this patch?

The later discussion has sounded like the kernel will (always) prune the
mode when we re-query, meaning that it doesn't make any sense to try to
re-set to the old mode.  Is this not the case?

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  reply	other threads:[~2017-03-31  0:37 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-01-26 12:37 [RFC PATCH xserver] modesetting: re-set the crtc's mode when link-status goes BAD Martin Peres
2017-01-26 17:21 ` Daniel Vetter
     [not found]   ` <20170126172120.iflf5b5l4m4wsuus-dv86pmgwkMBes7Z6vYuT8azUEOm+Xw19@public.gmane.org>
2017-01-31 17:08     ` Manasi Navare
2017-02-01 10:17       ` Jani Nikula
2017-01-31 20:13 ` Eric Anholt
2017-02-01 10:03   ` Jani Nikula
2017-02-01 19:58     ` Eric Anholt
2017-02-01 20:05       ` Manasi Navare
     [not found]         ` <20170201200512.GC21934-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-02-02 23:30           ` Martin Peres
     [not found]             ` <32b846ee-69c5-1dea-eed4-1bc41bb2958f-GANU6spQydw@public.gmane.org>
2017-02-03  0:30               ` Manasi Navare
2017-02-03  8:04             ` Daniel Vetter
     [not found]               ` <20170203080451.vrbmoaioqjyd3hhc-dv86pmgwkMBes7Z6vYuT8azUEOm+Xw19@public.gmane.org>
2017-02-06 15:50                 ` Martin Peres
     [not found]                   ` <4f8317ff-53e8-4c2d-effa-d074b11b15e6-GANU6spQydw@public.gmane.org>
2017-02-08 16:37                     ` Martin Peres
     [not found]                       ` <069473c6-d75e-48eb-e75d-4e65e201b4fb-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2017-02-13 21:05                         ` Eric Anholt
2017-02-13 23:14                           ` Manasi Navare
     [not found]                           ` <87k28tkdiq.fsf-omZaPlIz5HhaEpDpdNBo/KxOck334EZe@public.gmane.org>
2017-02-16  7:56                             ` Martin Peres
2017-02-24 20:09                           ` Manasi Navare
2017-02-26 19:42                             ` Daniel Vetter
2017-02-28  4:07                               ` Navare, Manasi D
2017-02-28  8:42                                 ` Daniel Vetter
2017-02-02  9:01       ` Daniel Vetter
2017-02-02 17:57         ` Eric Anholt
2017-02-28  8:43           ` Daniel Vetter
2017-02-01 19:55 ` Manasi Navare
     [not found] ` <20170126123728.5680-1-martin.peres-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2017-03-27 14:12   ` Martin Peres
2017-03-31  0:37     ` Eric Anholt [this message]
2017-03-31  0:50       ` Manasi Navare
2017-03-31 20:08         ` Eric Anholt
     [not found]           ` <87d1cxw6nq.fsf-omZaPlIz5HhaEpDpdNBo/KxOck334EZe@public.gmane.org>
2017-03-31 20:17             ` Manasi Navare
2017-04-01  0:22               ` Eric Anholt
2017-04-02 12:28                 ` Daniel Vetter
     [not found]                   ` <20170402122809.trh7oxzz25oao4bu-dv86pmgwkMBes7Z6vYuT8azUEOm+Xw19@public.gmane.org>
2017-04-03  2:21                     ` Eric Anholt
     [not found]                       ` <87efxamdt6.fsf-omZaPlIz5HhaEpDpdNBo/KxOck334EZe@public.gmane.org>
2017-04-03  6:25                         ` Manasi Navare
2017-04-03  7:19                           ` Daniel Vetter
2017-04-05 18:13                             ` Manasi Navare
2017-04-06 17:15                         ` Manasi Navare

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