drm/i915/psr: Consider SCL lines when validating vblank for wake latency

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Panel Replay and PSR2 selective update require sufficient vblank duration
to accommodate wake latencies. However, the current
wake_lines_fit_into_vblank() logic does not account for the minimum
Set Context Latency (SCL) lines.

Separate out _intel_psr_min_set_context_latency() to compute the minimum
SCL requirement based on platform and feature usage.

The alpm_config_valid() helper is updated to pass the necessary context for
determining whether Panel Replay or PSR2 selective update is enabled.

v2: While calling alpm_config_valid() for selective_update use false flag
    instead of has_panel_replay. (Jouni)
v3: Correct ordering of the panel_replay, sel_update flags. (Jouni)

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Cc: Animesh Manna <animesh.manna@intel.com>
Cc: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
Link: https://lore.kernel.org/r/20251016055415.2101347-6-ankit.k.nautiyal@intel.com

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Ankit Nautiyal 2025-10-16 11:24:09 +05:30

parent ca4edafa14

commit e00eb31a5a

1 changed files with 61 additions and 41 deletions

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

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