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    viafb: add interface for output device configuration · 2a918392
    Florian Tobias Schandinat 提交于
    This patch extends the proc entry to contain a possibility to view and
    change the output devices for each IGA. This is useful for debugging
    output problems as it provides a reliable way to query which low level
    devices are active after VIAs output device configuration nightmare
    happended. It's as well suitable for daily use as one can change the
    output configuration on the fly for example to connect a projector.
    At the moment it's still unstable. The reason is that we have to handle
    a bunch of undocumented output devices (those without a proper name) and
    that this patch is the first step to collect and verify the needed
    information. Basically the only configuration change that is expected to
    work at the moment is switching output devices between IGA1 and IGA2.
    Signed-off-by: NFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>
    Acked-by: NJonathan Corbet <corbet@lwn.net>
    Cc: Joseph Chan <JosephChan@via.com.tw>
    Cc: Andrew Morton <akpm@linux-foundation.org>
    2a918392
hw.c 72.2 KB
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