drm/i915/cnl: use previous pll hw readout

Browse source

By the time cnl_ddi_clock_get() is called we've just got the hw state
from the pll registers. We don't need to read them again: we can rather
reuse what was cached in the dpll_hw_state.

This also affects the code for ICL since it partially reuses the CNL
code. However the more intricate part on ICL is left for another patch.

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190322223751.22089-4-lucas.demarchi@intel.com
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

...

This commit is contained in:

Lucas De Marchi 2019-03-22 15:37:49 -07:00

parent 47c9877e9b

commit 5e65216d8d

3 changed files with 19 additions and 32 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

5

drivers/gpu/drm/i915/icl_dsi.c

View file

44

drivers/gpu/drm/i915/intel_ddi.c

View file

2

drivers/gpu/drm/i915/intel_drv.h

View file