[Intel-gfx] [PATCH] Poll for HDMI disconnects.

[Stuart Abercrombie]

> I've tried to be slightly lazy than in my previous mail and quickly
> tested this on my snb here: Bit 23 in SDEISR (0xc4000) is set when the
> cable is plugged in, and cleared when nothing is plugged in. Afaict it
> works as advertised. Note tha the SDE irq definitions nicely
> differentiates between "active high pulse" type interrupts and "active
> high level" interrupts. The hpd irq sources are all of the level type.

OK, so this is more complicated than I realized.  For whatever reason
this bit does not work with all monitor configurations.  Thanks for
clarifying the expected behavior.

Stuart