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drm/i915/mso: using joiner is not possible with eDP MSO

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It's not possible to use the joiner at the same time with eDP MSO. When
a panel needs MSO, it's not optional, so MSO trumps joiner.

v3: Only change intel_dp_has_joiner(), leave debugfs alone (Ville)

Fixes: bc71194e88 ("drm/i915/edp: enable eDP MSO during link training")
Cc: <stable@vger.kernel.org> # v5.13+
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/1668
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240614142311.589089-1-jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
(cherry picked from commit 8b5a92ca24)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Jani Nikula 2024-06-14 17:23:11 +03:00
parent 6ba59ff422
commit 49cc17967b
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/i915/display/intel_dp.c
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@ -442,6 +442,10 @@ bool intel_dp_has_bigjoiner(struct intel_dp *intel_dp)
struct intel_encoder *encoder = &intel_dig_port->base;
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
/* eDP MSO is not compatible with joiner */
if (intel_dp->mso_link_count)
return false;
return DISPLAY_VER(dev_priv) >= 12 ||
(DISPLAY_VER(dev_priv) == 11 &&
encoder->port != PORT_A);