Re: [PATCH 6/9] drm/i915: Fix PCH SSC reference clock settings

On Mon, 26 Sep 2011 23:11:43 -0700, Keith Packard keithp@keithp.com wrote:

The PCH refclk settings are global, so we need to look at all of the encoders, not just the current encoder when deciding how to configure it. Also, handle systems with more than one panel (any combination of PCH/non-PCH eDP and LVDS).

As I read it, this sets the refclk not on the active configuration, but on all the hardware detected for the system whether enabled or not.

There are two basic changes here, the cleanup and improvement to the logic based on what type of output is connected and the second change to determine which outputs are active. -Chris