Merge tag 'drm-intel-fixes-2022-10-27-1' of git://anongit.freedesktop…

….org/drm/drm-intel into drm-fixes - Extend Wa_1607297627 to Alderlake-P (José Roberto de Souza) - Keep PCI autosuspend control 'on' by default on all dGPU (Anshuman Gupta) - Reset frl trained flag before restarting FRL training (Ankit Nautiyal) Signed-off-by: Dave Airlie <[email protected]> From: Tvrtko Ursulin <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/Y1o+teE2Z11pT1MN@tursulin-desk
niw · Oct 28, 2022 · 9520b1d · 9520b1d
2 parents 200ec44 + 63720a5
commit 9520b1d
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Showing 3 changed files with 13 additions and 4 deletions.
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -3957,6 +3957,8 @@ intel_dp_handle_hdmi_link_status_change(struct intel_dp *intel_dp)
 
 		drm_dp_pcon_hdmi_frl_link_error_count(&intel_dp->aux, &intel_dp->attached_connector->base);
 
+		intel_dp->frl.is_trained = false;
+
 		/* Restart FRL training or fall back to TMDS mode */
 		intel_dp_check_frl_training(intel_dp);
 	}

diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -2293,11 +2293,11 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal)
 	}
 
 	if (IS_DG1_GRAPHICS_STEP(i915, STEP_A0, STEP_B0) ||
-	    IS_ROCKETLAKE(i915) || IS_TIGERLAKE(i915)) {
+	    IS_ROCKETLAKE(i915) || IS_TIGERLAKE(i915) || IS_ALDERLAKE_P(i915)) {
 		/*
 		 * Wa_1607030317:tgl
 		 * Wa_1607186500:tgl
-		 * Wa_1607297627:tgl,rkl,dg1[a0]
+		 * Wa_1607297627:tgl,rkl,dg1[a0],adlp
 		 *
 		 * On TGL and RKL there are multiple entries for this WA in the
 		 * BSpec; some indicate this is an A0-only WA, others indicate

diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -591,8 +591,15 @@ void intel_runtime_pm_enable(struct intel_runtime_pm *rpm)
 		pm_runtime_use_autosuspend(kdev);
 	}
 
-	/* Enable by default */
-	pm_runtime_allow(kdev);
+	/*
+	 *  FIXME: Temp hammer to keep autosupend disable on lmem supported platforms.
+	 *  As per PCIe specs 5.3.1.4.1, all iomem read write request over a PCIe
+	 *  function will be unsupported in case PCIe endpoint function is in D3.
+	 *  Let's keep i915 autosuspend control 'on' till we fix all known issue
+	 *  with lmem access in D3.
+	 */
+	if (!IS_DGFX(i915))
+		pm_runtime_allow(kdev);
 
 	/*
 	 * The core calls the driver load handler with an RPM reference held.