This is a preparation for making hotplug useable on ICL TypeC ports. On ICL we need a stricter control on when either kind of AUX power domain (TBT-alt or DP-alt) is enabled. That control becomes unfeasible if the reference can be held for arbitratry periods due to locking dependencies. OTOH it makes sense to restrict holding the reference only for the duration when it's actually needed. One result of that would be the unnecessary on-off-on power togglings when the reference is dropped and reacquired quickly. This patchset adds support for dropping display power domain references asynchronously with a delay to avoid the unecessary power togglings, and restricts holding the AUX power domain reference to the sequence where it's required during detection and HPD pulse handling. Cc: Ville Syrjala <ville.syrjala@xxxxxxxxxxxxxxx> Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx> Cc: José Roberto de Souza <jose.souza@xxxxxxxxx> Imre Deak (10): drm/i915: Add support for tracking wakerefs w/o power-on guarantee drm/i915: Verify power domains state during suspend in all cases drm/i915: Add support for asynchronous display power disabling drm/i915: Disable power asynchronously during DP AUX transfers drm/i915: WARN for eDP encoders in intel_dp_detect_dpcd() drm/i915: Remove the unneeded AUX power ref from intel_dp_detect() drm/i915: Remove the unneeded AUX power ref from intel_dp_hpd_pulse() drm/i915: Replace use of PLLS power domain with DISPLAY_CORE domain drm/i915: Avoid taking the PPS lock for non-eDP/VLV/CHV drm/i915: Assert that TypeC ports are not used for eDP drivers/gpu/drm/i915/i915_drv.h | 6 + drivers/gpu/drm/i915/intel_display.c | 2 +- drivers/gpu/drm/i915/intel_display.h | 2 +- drivers/gpu/drm/i915/intel_dp.c | 76 ++-- drivers/gpu/drm/i915/intel_dpll_mgr.c | 36 +- drivers/gpu/drm/i915/intel_psr.c | 6 + drivers/gpu/drm/i915/intel_runtime_pm.c | 443 ++++++++++++++++++++++-- drivers/gpu/drm/i915/intel_runtime_pm.h | 4 + 8 files changed, 491 insertions(+), 84 deletions(-) -- 2.17.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
