5 files changed, 22 insertions, 5 deletions

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 2e8fb51282ef..5dfe14763871 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -4831,7 +4831,8 @@ void
 drm_hdmi_avi_infoframe_quant_range(struct hdmi_avi_infoframe *frame,
                                    const struct drm_display_mode *mode,
                                    enum hdmi_quantization_range rgb_quant_range,
-                                   bool rgb_quant_range_selectable)
+                                   bool rgb_quant_range_selectable,
+                                   bool is_hdmi2_sink)
 {
         /*
          * CEA-861:
@@ -4855,8 +4856,15 @@ drm_hdmi_avi_infoframe_quant_range(struct hdmi_avi_infoframe *frame,
          *  YQ-field to match the RGB Quantization Range being transmitted
          *  (e.g., when Limited Range RGB, set YQ=0 or when Full Range RGB,
          *  set YQ=1) and the Sink shall ignore the YQ-field."
+         *
+         * Unfortunate certain sinks (eg. VIZ Model 67/E261VA) get confused
+         * by non-zero YQ when receiving RGB. There doesn't seem to be any
+         * good way to tell which version of CEA-861 the sink supports, so
+         * we limit non-zero YQ to HDMI 2.0 sinks only as HDMI 2.0 is based
+         * on on CEA-861-F.
          */
-        if (rgb_quant_range == HDMI_QUANTIZATION_RANGE_LIMITED)
+        if (!is_hdmi2_sink ||
+            rgb_quant_range == HDMI_QUANTIZATION_RANGE_LIMITED)
                 frame->ycc_quantization_range =
                         HDMI_YCC_QUANTIZATION_RANGE_LIMITED;
         else
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 5132dc814788..4dea833f9d1b 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -487,7 +487,8 @@ static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder,
                                            crtc_state->limited_color_range ?
                                            HDMI_QUANTIZATION_RANGE_LIMITED :
                                            HDMI_QUANTIZATION_RANGE_FULL,
-                                           intel_hdmi->rgb_quant_range_selectable);
+                                           intel_hdmi->rgb_quant_range_selectable,
+                                           is_hdmi2_sink);
 
         /* TODO: handle pixel repetition for YCBCR420 outputs */
         intel_write_infoframe(encoder, crtc_state, &frame);
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index fa37a1c07cf6..0b2088264039 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -424,7 +424,8 @@ static void vc4_hdmi_set_avi_infoframe(struct drm_encoder *encoder)
                                            vc4_encoder->limited_rgb_range ?
                                            HDMI_QUANTIZATION_RANGE_LIMITED :
                                            HDMI_QUANTIZATION_RANGE_FULL,
-                                           vc4_encoder->rgb_range_selectable);
+                                           vc4_encoder->rgb_range_selectable,
+                                           false);
 
         vc4_hdmi_write_infoframe(encoder, &frame);
 }
diff --git a/drivers/gpu/drm/vc4/vc4_irq.c b/drivers/gpu/drm/vc4/vc4_irq.c
index 7d7af3a93d94..61b2e5377993 100644
--- a/drivers/gpu/drm/vc4/vc4_irq.c
+++ b/drivers/gpu/drm/vc4/vc4_irq.c
@@ -208,6 +208,9 @@ vc4_irq_postinstall(struct drm_device *dev)
 {
         struct vc4_dev *vc4 = to_vc4_dev(dev);
 
+        /* Undo the effects of a previous vc4_irq_uninstall. */
+        enable_irq(dev->irq);
+
         /* Enable both the render done and out of memory interrupts. */
         V3D_WRITE(V3D_INTENA, V3D_DRIVER_IRQS);
 
@@ -225,6 +228,9 @@ vc4_irq_uninstall(struct drm_device *dev)
         /* Clear any pending interrupts we might have left. */
         V3D_WRITE(V3D_INTCTL, V3D_DRIVER_IRQS);
 
+        /* Finish any interrupt handler still in flight. */
+        disable_irq(dev->irq);
+
         cancel_work_sync(&vc4->overflow_mem_work);
 }
 
diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h
index 6f35909b8add..2ec41d032e56 100644
--- a/include/drm/drm_edid.h
+++ b/include/drm/drm_edid.h
@@ -362,7 +362,8 @@ void
 drm_hdmi_avi_infoframe_quant_range(struct hdmi_avi_infoframe *frame,
                                    const struct drm_display_mode *mode,
                                    enum hdmi_quantization_range rgb_quant_range,
-                                   bool rgb_quant_range_selectable);
+                                   bool rgb_quant_range_selectable,
+                                   bool is_hdmi2_sink);
 
 /**
  * drm_eld_mnl - Get ELD monitor name length in bytes.