[Intel-gfx] [PATCH 0/8] drm/i915: adjusted_mode.clock vs. port_clock v2

[ville.syrjala at linux.intel.com]

The main idea behind this series is to make adjusted_mode.clock always
be the pipe pixel clock. port_clock will then be the clock that the
encoder is churning out stuff: SDVO pixel multiplied clock, DP link
clock, or the 1.5x pixel clock on 12bpc HDMI. For other output types
the two clocks will be the same. As a bonus we get more pipe config sanity
checking for the clocks and pipe bpp.

This series includes all the patches from these two earlier series:
 [PATCH 0/2] drm/i915: adjusted_mode.clock vs. port_clock vs. pixel_multiplier
 [PATCH 0/3] drm/i915: Fuzzy clock check for port_clock

As those two series were incomplete, I had to add a bit more stuff
make it all turn out correctly. Daniel gets the credit for the idea to
eliminate get_clock() and do the DPLL clock extraction early. That made
the whole thing much simpler in the end.

I kept Jani's r-b tags even though I did a few minor changes to those
patches.