[PATCH 0/5] drm/i915/intel_panel: Reduce redundant intel_panel_fixed_mode() calls

[Ankit Nautiyal <ankit.k.nautiyal@intel.com>]

This series addresses feedback from Jani Nikula to reduce
intel_panel_fixed_mode() calls in encoder code [1].

Currently, encoder code calls intel_panel_fixed_mode() directly to check
for or get fixed mode state, then calls intel_panel_mode_valid() or
intel_panel_compute_config(), which repeat the lookup internally.

This series avoids those redundant calls by:
 - Extending intel_panel_mode_valid() to return the effective target clock
   via out parameter
 - Dropping direct intel_panel_fixed_mode() calls from encoder mode_valid
   paths
 - Dropping redundant fixed mode checks from compute_config paths

Note: intel_sdvo.c retains two intel_panel_fixed_mode() calls in
intel_sdvo_create_preferred_input_timing() and intel_sdvo_pre_enable()
as they seem to indeed need the fixed modes.
It might need a bit more work to get rid of them.

[1] https://lore.kernel.org/intel-gfx/0fb737c2484e116721b944befff146d9069ecee3@intel.com/

Ankit Nautiyal (5):
  drm/i915/intel_sdvo: Check fixed_mode->clock against max_dotclock in
    mode_valid
  drm/i915/intel_panel: Avoid calls to intel_panel_fixed_mode() in
    mode_valid
  drm/i915/intel_dvo: Drop call to intel_panel_fixed_mode() from
    compute_config
  drm/i915/intel_sdvo: Drop call to intel_panel_fixed_mode() from
    compute_config
  drm/i915/dp: Drop call to intel_panel_fixed_mode() from compute_config

 drivers/gpu/drm/i915/display/intel_dp.c    | 12 +++------
 drivers/gpu/drm/i915/display/intel_dsi.c   |  7 +++---
 drivers/gpu/drm/i915/display/intel_dvo.c   | 29 ++++++----------------
 drivers/gpu/drm/i915/display/intel_lvds.c  |  7 +++---
 drivers/gpu/drm/i915/display/intel_panel.c |  9 ++++++-
 drivers/gpu/drm/i915/display/intel_panel.h |  3 ++-
 drivers/gpu/drm/i915/display/intel_sdvo.c  | 11 +++++---
 7 files changed, 34 insertions(+), 44 deletions(-)

-- 
2.45.2