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Enable DP2.1 alpm

From:  Animesh Manna <animesh.manna-AT-intel.com>
To:  intel-gfx-AT-lists.freedesktop.org, intel-xe-AT-lists.freedesktop.org, dri-devel-AT-lists.freedesktop.org
Subject:  [PATCH v2 00/10] Enable DP2.1 alpm
Date:  Tue, 04 Nov 2025 03:39:47 +0530
Message-ID:  <20251103220957.1229608-1-animesh.manna@intel.com>
Cc:  jani.nikula-AT-intel.com, Animesh Manna <animesh.manna-AT-intel.com>, Jouni Högander <jouni.hogander-AT-intel.com>
Archive-link:  Article

ALPM support added on DP2.1 and xe3p will support DP2.1 alpm.
This patch series extending alpm supoort for DP2.1.

Cc: Jouni Högander <jouni.hogander@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>

Animesh Manna (10):
  drm/i915/alpm: Add dpcd definition for DP2.1 alpm capability
  drm/i915/alpm: alpm_init() for DP2.1
  drm/i915/alpm: Enable debugfs for DP2.1
  drm/i915/alpm: Refactor Auxless wake time calculation
  drm/i915/alpm: Auxless wake time calculation for Xe3p
  drm/i915/alpm: Half LFPS cycle calculation
  drm/i915/alpm: Program lttpr count for DP 2.1 alpm
  drm/i915/alpm: Enable MAC Transmitting LFPS for LT phy
  drm/i915/alpm: Replace is_edp() with alpm_is_possible()
  drm/i915/alpm: Introduce has_alpm to decouple from pr/psr2/lobf

 drivers/gpu/drm/i915/display/intel_alpm.c     | 148 ++++++++++++++----
 drivers/gpu/drm/i915/display/intel_alpm.h     |   1 +
 drivers/gpu/drm/i915/display/intel_ddi.c      |   5 +-
 .../drm/i915/display/intel_display_types.h    |   2 +
 drivers/gpu/drm/i915/display/intel_dp.c       |  11 +-
 .../drm/i915/display/intel_dp_link_training.c |  12 ++
 drivers/gpu/drm/i915/display/intel_lt_phy.c   |  35 +++++
 drivers/gpu/drm/i915/display/intel_lt_phy.h   |   2 +
 .../gpu/drm/i915/display/intel_lt_phy_regs.h  |   3 +
 drivers/gpu/drm/i915/display/intel_psr.c      |  23 ++-
 drivers/gpu/drm/i915/display/intel_psr.h      |   1 -
 include/drm/display/drm_dp.h                  |   4 +-
 12 files changed, 197 insertions(+), 50 deletions(-)

-- 
2.29.0



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