drm: Drop drm_helper_probe_single_connector_modes_nomerge()

Now that the mode type bit merge logic is fixed to only merge
between new probed modes, hopefully we can eliminat the special
case for qxl and virtio. That is make the merge the mode type
bits from all matching new probed modes, just like every other
driver.

qxl and virtio got excluded from the merging in
commit 3fbd6439e463 ("drm: copy mode type in drm_mode_connector_list_update()")
commit abce1ec9b08a ("Revert "drm: copy mode type in drm_mode_connector_list_update()"")
commit b87577b7c768 ("drm: try harder to avoid regression when merging mode bits")

Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Adam Jackson <ajax@redhat.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
[danvet: Resolve conflicts with doc updates.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/drm_modes.c

@@ -1172,7 +1172,6 @@ EXPORT_SYMBOL(drm_mode_sort);
 /**
  * drm_mode_connector_list_update - update the mode list for the connector
  * @connector: the connector to update
- * @merge_type_bits: whether to merge or overwrite type bits
  *
  * This moves the modes from the @connector probed_modes list
  * to the actual mode list. It compares the probed mode against the current
@@ -1181,8 +1180,7 @@ EXPORT_SYMBOL(drm_mode_sort);
  * This is just a helper functions doesn't validate any modes itself and also
  * doesn't prune any invalid modes. Callers need to do that themselves.
  */
-void drm_mode_connector_list_update(struct drm_connector *connector,
-				    bool merge_type_bits)
+void drm_mode_connector_list_update(struct drm_connector *connector)
 {
 	struct drm_display_mode *pmode, *pt;
 
@@ -1215,14 +1213,10 @@ void drm_mode_connector_list_update(struct drm_connector *connector,
 				drm_mode_copy(mode, pmode);
 			} else if ((mode->type & DRM_MODE_TYPE_PREFERRED) == 0 &&
 				   (pmode->type & DRM_MODE_TYPE_PREFERRED) != 0) {
-				if (merge_type_bits)
-					pmode->type |= mode->type;
+				pmode->type |= mode->type;
 				drm_mode_copy(mode, pmode);
 			} else {
-				if (merge_type_bits)
-					mode->type |= pmode->type;
-				else
-					mode->type = pmode->type;
+				mode->type |= pmode->type;
 			}
 
 			list_del(&pmode->head);

drivers/gpu/drm/drm_probe_helper.c

@@ -129,9 +129,39 @@ void drm_kms_helper_poll_enable_locked(struct drm_device *dev)
 }
 EXPORT_SYMBOL(drm_kms_helper_poll_enable_locked);
 
-
-static int drm_helper_probe_single_connector_modes_merge_bits(struct drm_connector *connector,
-							      uint32_t maxX, uint32_t maxY, bool merge_type_bits)
+/**
+ * drm_helper_probe_single_connector_modes - get complete set of display modes
+ * @connector: connector to probe
+ * @maxX: max width for modes
+ * @maxY: max height for modes
+ *
+ * Based on the helper callbacks implemented by @connector in struct
+ * &drm_connector_helper_funcs try to detect all valid modes.  Modes will first
+ * be added to the connector's probed_modes list, then culled (based on validity
+ * and the @maxX, @maxY parameters) and put into the normal modes list.
+ *
+ * Intended to be used as a generic implementation of the ->fill_modes()
+ * @connector vfunc for drivers that use the CRTC helpers for output mode
+ * filtering and detection.
+ *
+ * If the helper operation returns no mode, and if the connector status is
+ * connector_status_connected, standard VESA DMT modes up to 1024x768 are
+ * automatically added to the modes list by a call to
+ * drm_add_modes_noedid().
+ *
+ * The function then filters out modes larger than @maxX and maxY if specified.
+ * It finally calls the optional connector ->mode_valid() helper operation for each
+ * mode in the probed list to check whether the mode is valid for the connector.
+ *
+ * Compared to drm_helper_probe_single_connector_modes_nomerge() this function
+ * merged the mode bits for the preferred mode, as a hack to work around some
+ * quirky issues on funky hardware.
+ *
+ * Returns:
+ * The number of modes found on @connector.
+ */
+int drm_helper_probe_single_connector_modes(struct drm_connector *connector,
+					    uint32_t maxX, uint32_t maxY)
 {
 	struct drm_device *dev = connector->dev;
 	struct drm_display_mode *mode;
@@ -223,7 +253,7 @@ static int drm_helper_probe_single_connector_modes_merge_bits(struct drm_connect
 	if (count == 0)
 		goto prune;
 
-	drm_mode_connector_list_update(connector, merge_type_bits);
+	drm_mode_connector_list_update(connector);
 
 	if (connector->interlace_allowed)
 		mode_flags |= DRM_MODE_FLAG_INTERLACE;
@@ -267,64 +297,8 @@ prune:
 
 	return count;
 }
-
-/**
- * drm_helper_probe_single_connector_modes - get complete set of display modes
- * @connector: connector to probe
- * @maxX: max width for modes
- * @maxY: max height for modes
- *
- * Based on the helper callbacks implemented by @connector in struct
- * &drm_connector_helper_funcs try to detect all valid modes.  Modes will first
- * be added to the connector's probed_modes list, then culled (based on validity
- * and the @maxX, @maxY parameters) and put into the normal modes list.
- *
- * Intended to be used as a generic implementation of the ->fill_modes()
- * @connector vfunc for drivers that use the CRTC helpers for output mode
- * filtering and detection.
- *
- * If the helper operation returns no mode, and if the connector status is
- * connector_status_connected, standard VESA DMT modes up to 1024x768 are
- * automatically added to the modes list by a call to
- * drm_add_modes_noedid().
- *
- * The function then filters out modes larger than @maxX and maxY if specified.
- * It finally calls the optional connector ->mode_valid() helper operation for each
- * mode in the probed list to check whether the mode is valid for the connector.
- *
- * Compared to drm_helper_probe_single_connector_modes_nomerge() this function
- * merged the mode bits for the preferred mode, as a hack to work around some
- * quirky issues on funky hardware.
- *
- * Returns:
- * The number of modes found on @connector.
- */
-int drm_helper_probe_single_connector_modes(struct drm_connector *connector,
-					    uint32_t maxX, uint32_t maxY)
-{
-	return drm_helper_probe_single_connector_modes_merge_bits(connector, maxX, maxY, true);
-}
 EXPORT_SYMBOL(drm_helper_probe_single_connector_modes);
 
-/**
- * drm_helper_probe_single_connector_modes_nomerge - get complete set of display modes
- * @connector: connector to probe
- * @maxX: max width for modes
- * @maxY: max height for modes
- *
- * This operates like drm_hehlper_probe_single_connector_modes() except it
- * replaces the mode bits instead of merging them for preferred modes.
- *
- * Returns:
- * The number of modes found on @connector.
- */
-int drm_helper_probe_single_connector_modes_nomerge(struct drm_connector *connector,
-					    uint32_t maxX, uint32_t maxY)
-{
-	return drm_helper_probe_single_connector_modes_merge_bits(connector, maxX, maxY, false);
-}
-EXPORT_SYMBOL(drm_helper_probe_single_connector_modes_nomerge);
-
 /**
  * drm_kms_helper_hotplug_event - fire off KMS hotplug events
  * @dev: drm_device whose connector state changed

drivers/gpu/drm/qxl/qxl_display.c

@@ -923,7 +923,7 @@ static void qxl_conn_destroy(struct drm_connector *connector)
 static const struct drm_connector_funcs qxl_connector_funcs = {
 	.dpms = drm_helper_connector_dpms,
 	.detect = qxl_conn_detect,
-	.fill_modes = drm_helper_probe_single_connector_modes_nomerge,
+	.fill_modes = drm_helper_probe_single_connector_modes,
 	.set_property = qxl_conn_set_property,
 	.destroy = qxl_conn_destroy,
 };

drivers/gpu/drm/virtio/virtgpu_display.c

@@ -400,7 +400,7 @@ static void virtio_gpu_conn_destroy(struct drm_connector *connector)
 static const struct drm_connector_funcs virtio_gpu_connector_funcs = {
 	.dpms = drm_atomic_helper_connector_dpms,
 	.detect = virtio_gpu_conn_detect,
-	.fill_modes = drm_helper_probe_single_connector_modes_nomerge,
+	.fill_modes = drm_helper_probe_single_connector_modes,
 	.destroy = virtio_gpu_conn_destroy,
 	.reset = drm_atomic_helper_connector_reset,
 	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,

drivers/gpu/drm/vmwgfx/vmwgfx_kms.c

@@ -1538,7 +1538,7 @@ int vmw_du_connector_fill_modes(struct drm_connector *connector,
 		drm_mode_probed_add(connector, mode);
 	}
 
-	drm_mode_connector_list_update(connector, true);
+	drm_mode_connector_list_update(connector);
 	/* Move the prefered mode first, help apps pick the right mode. */
 	drm_mode_sort(&connector->modes);
 

include/drm/drm_crtc_helper.h

@@ -70,10 +70,6 @@ int drm_helper_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
 extern int drm_helper_probe_single_connector_modes(struct drm_connector
 						   *connector, uint32_t maxX,
 						   uint32_t maxY);
-extern int drm_helper_probe_single_connector_modes_nomerge(struct drm_connector
-							   *connector,
-							   uint32_t maxX,
-							   uint32_t maxY);
 extern void drm_kms_helper_poll_init(struct drm_device *dev);
 extern void drm_kms_helper_poll_fini(struct drm_device *dev);
 extern bool drm_helper_hpd_irq_event(struct drm_device *dev);

include/drm/drm_modes.h

@@ -483,7 +483,7 @@ enum drm_mode_status drm_mode_validate_size(const struct drm_display_mode *mode,
 void drm_mode_prune_invalid(struct drm_device *dev,
 			    struct list_head *mode_list, bool verbose);
 void drm_mode_sort(struct list_head *mode_list);
-void drm_mode_connector_list_update(struct drm_connector *connector, bool merge_type_bits);
+void drm_mode_connector_list_update(struct drm_connector *connector);
 
 /* parsing cmdline modes */
 bool