drm/i915/fdi: Recompute state for affected CRTCs on FDI links

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Recompute the state of all CRTCs on an FDI link during a modeset that
may be affected by the modeset of other CRTCs on the same link. This
ensures that each CRTC on the link maximizes its BW use (after another
CRTC is disabled).

In practice this means recomputing pipe B's config on IVB if pipe C gets
disabled.

v2:
- Add the change recomputing affected CRTC states in a separate patch.
  (Ville)
v3: (Ville)
- Constify old and new crtc states.
- Check for fused off pipe C.
- Fix new vs. old crtc state mixup.
- Drop check for pipe C's enabled state.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230921195159.2646027-12-imre.deak@intel.com

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This commit is contained in:

Imre Deak 2023-09-21 22:51:59 +03:00

parent 998d2cd361

commit f67ff36f21

3 changed files with 52 additions and 0 deletions

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4

drivers/gpu/drm/i915/display/intel_display.c

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47

drivers/gpu/drm/i915/display/intel_fdi.c

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1

drivers/gpu/drm/i915/display/intel_fdi.h

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