[Nouveau] [PATCH 1/5] Backlight: Add backlight type
Matthew Garrett
mjg59 at srcf.ucam.org
Mon Nov 22 05:40:04 PST 2010
On Mon, Nov 22, 2010 at 01:35:48PM +0000, Richard Purdie wrote:
> Its the reverse situation I worry about. Are there situations where
> there are multiple connectors on the PCI device and the ACPI interface
> just controls one of them but controls for the other connectors may
> exist?
Yes, that's certainly possible and it'd be desirable to fix this up, but
the same problem also applies to platform interfaces and it's typically
unfixable there. My userspace implementation looks at the connector type
to determine the best approach - if it's not LVDS or eDP it ignores the
firmware and platform interfaces, so you'll fall back to the raw
interface if it can provide support for your connector (presumably via
ddcci, although we don't have this implemented yet)
--
Matthew Garrett | mjg59 at srcf.ucam.org
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