drm/i915: Add intel_pipe_wm and prepare for watermark pre-compute

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Introduce a new struct intel_pipe_wm which contains all the
watermarks for a single pipe. Use it to unify the LP0 and LP1+
watermark computations so that we can just iterate through the
watermark levels neatly and call ilk_compute_wm_level() for each.

Also add another tool ilk_wm_merge() that merges the LP1+ watermarks
from all pipes. For that, embed one intel_pipe_wm inside intel_crtc that
contains the currently valid watermarks for each pipe.

This is mainly preparatory work for pre-computing the watermarks for
each pipe and merging them at a later time. For now the merging still
happens immediately.

v2: Add some comments about level 0 DDB split and intel_wm_config
    Add WARN_ON for level 0 being disabled
    s/lp_wm/merged

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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Ville Syrjälä 2013-10-09 19:17:55 +03:00 • committed by Daniel Vetter

parent 0301b3ac38

commit 0b2ae6d72e

2 changed files with 128 additions and 76 deletions

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12

drivers/gpu/drm/i915/intel_drv.h

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192

drivers/gpu/drm/i915/intel_pm.c

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