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drm/i915/dp: Use check link state work in the HPD IRQ handler

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Simplify things by retraining a DP link if a bad link is detected in the
HPD IRQ handler from the encoder's check link state work, similarly to
how this is done after a modeset link training failure.

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240610164933.2947366-14-imre.deak@intel.com
This commit is contained in:
Imre Deak
2024-06-10 19:49:25 +03:00
parent ff68f68c0e
commit 34aca703d4
1 changed files with 7 additions and 4 deletions
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11
drivers/gpu/drm/i915/display/intel_dp.c
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@@ -4974,6 +4974,8 @@ static bool
intel_dp_check_mst_status(struct intel_dp *intel_dp)
{
struct drm_i915_private *i915 = dp_to_i915(intel_dp);
struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
struct intel_encoder *encoder = &dig_port->base;
bool link_ok = true;
bool reprobe_needed = false;
@@ -5019,7 +5021,10 @@ intel_dp_check_mst_status(struct intel_dp *intel_dp)
drm_dp_mst_hpd_irq_send_new_request(&intel_dp->mst_mgr);
}
return link_ok && !reprobe_needed;
if (!link_ok)
intel_encoder_link_check_queue_work(encoder, 0);
return !reprobe_needed;
}
static void
@@ -5495,9 +5500,7 @@ intel_dp_short_pulse(struct intel_dp *intel_dp)
/* Handle CEC interrupts, if any */
drm_dp_cec_irq(&intel_dp->aux);
/* defer to the hotplug work for link retraining if needed */
if (intel_dp_needs_link_retrain(intel_dp))
return false;
intel_dp_check_link_state(intel_dp);
intel_psr_short_pulse(intel_dp);