update drm to linux 5.7

adds kernel support for
amdgpu:		vega20, raven2, renoir, navi10, navi14
inteldrm:	icelake, tigerlake

Thanks to the OpenBSD Foundation for sponsoring this work, kettenis@ for
helping, patrick@ for helping adapt rockchip drm and many developers for
testing.

1 files changed, 10 insertions, 12 deletions

diff --git a/sys/dev/pci/drm/drm_encoder.c b/sys/dev/pci/drm/drm_encoder.c
index 273e1c59c54..e555281f43d 100644
--- a/sys/dev/pci/drm/drm_encoder.c
+++ b/sys/dev/pci/drm/drm_encoder.c
@@ -21,7 +21,10 @@
  */
 
 #include <linux/export.h>
-#include <drm/drmP.h>
+
+#include <drm/drm_bridge.h>
+#include <drm/drm_device.h>
+#include <drm/drm_drv.h>
 #include <drm/drm_encoder.h>
 
 #include "drm_crtc_internal.h"
@@ -137,6 +140,7 @@ int drm_encoder_init(struct drm_device *dev,
 		goto out_put;
 	}
 
+	INIT_LIST_HEAD(&encoder->bridge_chain);
 	list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
 	encoder->index = dev->mode_config.num_encoder++;
 
@@ -157,22 +161,16 @@ EXPORT_SYMBOL(drm_encoder_init);
 void drm_encoder_cleanup(struct drm_encoder *encoder)
 {
 	struct drm_device *dev = encoder->dev;
+	struct drm_bridge *bridge, *next;
 
 	/* Note that the encoder_list is considered to be static; should we
 	 * remove the drm_encoder at runtime we would have to decrement all
 	 * the indices on the drm_encoder after us in the encoder_list.
 	 */
 
-	if (encoder->bridge) {
-		struct drm_bridge *bridge = encoder->bridge;
-		struct drm_bridge *next;
-
-		while (bridge) {
-			next = bridge->next;
-			drm_bridge_detach(bridge);
-			bridge = next;
-		}
-	}
+	list_for_each_entry_safe(bridge, next, &encoder->bridge_chain,
+				 chain_node)
+		drm_bridge_detach(bridge);
 
 	drm_mode_object_unregister(dev, &encoder->base);
 	kfree(encoder->name);
@@ -222,7 +220,7 @@ int drm_mode_getencoder(struct drm_device *dev, void *data,
 	struct drm_crtc *crtc;
 
 	if (!drm_core_check_feature(dev, DRIVER_MODESET))
-		return -EINVAL;
+		return -EOPNOTSUPP;
 
 	encoder = drm_encoder_find(dev, file_priv, enc_resp->encoder_id);
 	if (!encoder)