drm/i915: Sanitize the shared DPLL find/reference interface
Pass the PLL HW state to the PLL find/reference functions making it clearer what is their input. Also pass to these the atomic state and the CRTC object instead of the CRTC state, since they don't require the latter. Move setting the PLL in the crtc_state to the get_dpll() hook, which is the more logical place for this, where the related PLL HW state was also set. This refactoring is also a preparation for a follow-up patch that will have to find/reference multiple PLLs. No functional changes. Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Signed-off-by: NImre Deak <imre.deak@intel.com> Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190628143635.22066-18-imre.deak@intel.com
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