From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Dave Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>,
David Airlie <airlied@linux.ie>,
dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
Andreas Heider <andreas@meetr.de>
Subject: Re: [RFC PATCH 7/7] drm/pci: Defer initialization of secondary graphics devices until switcheroo is ready
Date: Mon, 20 Aug 2012 17:28:28 +0100 [thread overview]
Message-ID: <20120820162827.GA31270@srcf.ucam.org> (raw)
In-Reply-To: <20120820162444.GG11013@thinkpad-t410>
On Mon, Aug 20, 2012 at 11:24:44AM -0500, Seth Forshee wrote:
> I'm not sure how we support both of these cases without doing something
> more like what I originally proposed, i.e. registering the LVDS
> connector even if it doesn't look like a panel is attached. I still
> honestly favor that approach, although it does come with its own set of
> challenges.
>
> The only other option I can come up with is to reprobe LVDS after
> switcheroo and add the connector at that time. I haven't investigated
> this option in detail, but at first glance it looks like there are at
> least some places where DRM isn't prepared to cope with adding
> connectors after initialization.
Well, one option is to identify whether the hardware is switcheroo
capable without the use of the switcheroo driver. It looks like we can
do that in the majority of cases - Apple is the only special case I can
see, and that one's a fairly easy workaround.
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2012-08-20 16:28 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-03 16:02 [RFC PATCH 0/5] i915 changes for hybrid graphics support on Macbooks Seth Forshee
2012-08-03 16:02 ` [RFC PATCH 1/5] drm/i915: Add support for vga_switcheroo reprobe Seth Forshee
2012-08-03 16:02 ` [RFC PATCH 2/5] drm/i915: separate out code to get EDID from LVDS panel Seth Forshee
2012-08-03 16:02 ` [RFC PATCH 3/5] drm/i915: register LVDS connector even if we can't get a panel mode Seth Forshee
2012-08-03 16:14 ` Matthew Garrett
2012-08-03 16:24 ` Seth Forshee
2012-08-03 16:27 ` Matthew Garrett
2012-08-04 16:57 ` Seth Forshee
2012-08-05 21:14 ` Daniel Vetter
2012-08-05 21:18 ` Matthew Garrett
2012-08-05 21:40 ` Daniel Vetter
2012-08-05 21:44 ` Dave Airlie
2012-08-05 23:20 ` Alex Deucher
2012-08-06 4:51 ` Seth Forshee
2012-08-20 15:30 ` Seth Forshee
2012-08-20 15:30 ` [RFC PATCH 1/7] vga_switcheroo: Add support for switching only the DDC Seth Forshee
2012-08-20 15:30 ` [RFC PATCH 2/7] vga_switcheroo: Add helper function to get the active client Seth Forshee
2012-08-20 15:31 ` [RFC PATCH 3/7] vga_switcheroo: Add notifier call chain for switcheroo events Seth Forshee
2012-08-20 15:31 ` [RFC PATCH 4/7] apple-gmux: Add switch_ddc support Seth Forshee
2012-08-20 15:31 ` [RFC PATCH 5/7] drm/edid: Switch DDC when reading the EDID Seth Forshee
2012-08-20 15:31 ` [RFC PATCH 6/7] drm/pci: Add drm_put_pci_dev() Seth Forshee
2012-08-20 15:31 ` [RFC PATCH 7/7] drm/pci: Defer initialization of secondary graphics devices until switcheroo is ready Seth Forshee
2012-08-20 15:36 ` Matthew Garrett
2012-08-20 15:56 ` Seth Forshee
2012-08-20 15:57 ` Matthew Garrett
2012-08-20 16:24 ` Seth Forshee
2012-08-20 16:28 ` Matthew Garrett [this message]
2012-08-10 22:19 ` [RFC PATCH 3/5] drm/i915: register LVDS connector even if we can't get a panel mode Seth Forshee
2012-08-06 12:23 ` Matthew Garrett
2012-08-06 20:16 ` Seth Forshee
2012-08-03 16:02 ` [RFC PATCH 4/5] drm/i915: make intel_lvds_get_edid() more robust Seth Forshee
2012-08-03 16:02 ` [RFC PATCH 5/5] drm/i915: check LVDS for EDID on GPU switches Seth Forshee
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