[Intel-gfx] [PATCH v2 0/5] Do not re-read dpll registers

[Lucas De Marchi]

v2 of https://patchwork.freedesktop.org/series/58382/

Instead of re-reading the registers we just read on the hw state
readout, use the values saved on intel_shared_dpll. Besides not doing
the MMIO, this helps on sharing code since we don't have to
differentiate e.g. ICL and CNL because they have different registers for
the same thing.

Lucas De Marchi (5):
  drm/i915/skl: use previous pll hw readout
  drm/i915/bxt: make bxt_calc_pll_link() similar to skl
  drm/i915/cnl: use previous pll hw readout
  drm/i915/icl: use previous pll hw readout
  drm/i915/icl: reduce pll_id scope and use enum type

 drivers/gpu/drm/i915/icl_dsi.c   |   5 +-
 drivers/gpu/drm/i915/intel_ddi.c | 160 +++++++++++++------------------
 drivers/gpu/drm/i915/intel_drv.h |   2 +-
 3 files changed, 70 insertions(+), 97 deletions(-)

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2.20.1