drm/i915: Perform a central cdclk state sanity check
authorVille Syrjälä <ville.syrjala@linux.intel.com>
Tue, 24 Oct 2017 09:52:16 +0000 (12:52 +0300)
committerVille Syrjälä <ville.syrjala@linux.intel.com>
Wed, 25 Oct 2017 10:47:14 +0000 (13:47 +0300)
commitcfddadc98abc85f478c92187c944e0ee963f741b
treed97caecb435d10be98196c2bd71d59aa126fe3b8
parent0c9f353f014e6d88a5af8b305503a5396fe63ff8
drm/i915: Perform a central cdclk state sanity check

WARN if the cdclk state doesn't match what we expect after programming.
And let's remove the WARN from bdw_set_cdclk() that's trying to achieve
the same thing in a more limite fashion.

Also take the opportunity to refactor the code to use a common function
for dumping out a cdclk state.

Cc: Mika Kahola <mika.kahola@intel.com>
Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171024095216.1638-11-ville.syrjala@linux.intel.com
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
drivers/gpu/drm/i915/intel_cdclk.c
drivers/gpu/drm/i915/intel_display.c
drivers/gpu/drm/i915/intel_drv.h