Merge tag 'drm-misc-next-2021-10-14' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 5.16:

UAPI Changes:

Cross-subsystem Changes:

Core Changes:
  - fbdev: Fix double-free, Remove unused scrolling acceleration
  - locking: improve logging for contented locks without backoff
  - dma-buf: Add dma_resv_for_each_fence iterator, and conversion of
    users

Driver Changes:
  - nouveau: Various code style improvements
  - bridge: HPD improvements for lt9611uxc, eDP aux-bus support for
    ps8640, lvds-codec data-mapping selection support
  - panels: Vivax TPC-9150, Innolux G070Y2-T02, LOGIC Technologies
    LTTD800480070-L2RT, Sharp LS060T1SX01,
Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20211014120452.2wicnt6hobu3kbwb@gilmour

Documentation/devicetree/bindings/display/bridge/lvds-codec.yaml

@@ -49,11 +49,26 @@ properties:
 
     properties:
       port@0:
-        $ref: /schemas/graph.yaml#/properties/port
+        $ref: /schemas/graph.yaml#/$defs/port-base
         description: |
           For LVDS encoders, port 0 is the parallel input
           For LVDS decoders, port 0 is the LVDS input
 
+        properties:
+          endpoint:
+            $ref: /schemas/media/video-interfaces.yaml#
+            unevaluatedProperties: false
+
+            properties:
+              data-mapping:
+                enum:
+                  - jeida-18
+                  - jeida-24
+                  - vesa-24
+                description: |
+                  The color signals mapping order. See details in
+                  Documentation/devicetree/bindings/display/panel/lvds.yaml
+
       port@1:
         $ref: /schemas/graph.yaml#/properties/port
         description: |
@@ -71,6 +86,22 @@ properties:
 
   power-supply: true
 
+if:
+  not:
+    properties:
+      compatible:
+        contains:
+          const: lvds-decoder
+then:
+  properties:
+    ports:
+      properties:
+        port@0:
+          properties:
+            endpoint:
+              properties:
+                data-mapping: false
+
 required:
   - compatible
   - ports

Documentation/devicetree/bindings/display/bridge/ps8640.yaml

@@ -40,6 +40,9 @@ properties:
   vdd33-supply:
     description: Regulator for 3.3V digital core power.
 
+  aux-bus:
+    $ref: /schemas/display/dp-aux-bus.yaml#
+
   ports:
     $ref: /schemas/graph.yaml#/properties/ports
 
@@ -98,7 +101,21 @@ examples:
                     reg = <1>;
                     ps8640_out: endpoint {
                         remote-endpoint = <&panel_in>;
-                   };
+                    };
+                };
+            };
+
+            aux-bus {
+                panel {
+                    compatible = "boe,nv133fhm-n62";
+                    power-supply = <&pp3300_dx_edp>;
+                    backlight = <&backlight>;
+
+                    port {
+                        panel_in: endpoint {
+                            remote-endpoint = <&ps8640_out>;
+                        };
+                    };
                 };
             };
         };

Documentation/devicetree/bindings/display/panel/panel-simple.yaml

@@ -166,6 +166,8 @@ properties:
       - innolux,at070tn92
         # Innolux G070Y2-L01 7" WVGA (800x480) TFT LCD panel
       - innolux,g070y2-l01
+        # Innolux G070Y2-T02 7" WVGA (800x480) TFT LCD TTL panel
+      - innolux,g070y2-t02
         # Innolux Corporation 10.1" G101ICE-L01 WXGA (1280x800) LVDS panel
       - innolux,g101ice-l01
         # Innolux Corporation 12.1" WXGA (1280x800) TFT LCD panel
@@ -309,6 +311,8 @@ properties:
       - urt,umsh-8596md-11t
       - urt,umsh-8596md-19t
       - urt,umsh-8596md-20t
+        # Vivax TPC-9150 tablet 9.0" WSVGA TFT LCD panel
+      - vivax,tpc9150-panel
         # VXT 800x480 color TFT LCD panel
       - vxt,vl050-8048nt-c01
         # Winstar Display Corporation 3.5" QVGA (320x240) TFT LCD panel
@@ -317,6 +321,7 @@ properties:
       - yes-optoelectronics,ytc700tlag-05-201c
 
   backlight: true
+  ddc-i2c-bus: true
   enable-gpios: true
   port: true
   power-supply: true

Documentation/devicetree/bindings/display/panel/sharp,ls060t1sx01.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/sharp,ls060t1sx01.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sharp Microelectronics 6.0" FullHD TFT LCD panel
+
+maintainers:
+  - Dmitry Baryskov <dmitry.baryshkov@linaro.org>
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    const: sharp,ls060t1sx01
+
+  reg: true
+  backlight: true
+  reset-gpios: true
+  port: true
+
+  avdd-supply:
+    description: handle of the regulator that provides the positive supply voltage
+  avee-supply:
+    description: handle of the regulator that provides the negative supply voltage
+  vddi-supply:
+    description: handle of the regulator that provides the I/O supply voltage
+  vddh-supply:
+    description: handle of the regulator that provides the analog supply voltage
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    dsi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        panel@0 {
+            compatible = "sharp,ls060t1sx01";
+            reg = <0>;
+            avdd-supply = <&pm8941_l22>;
+            backlight = <&backlight>;
+            reset-gpios = <&pm8916_gpios 25 GPIO_ACTIVE_LOW>;
+        };
+    };
+
+...

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -1264,6 +1264,8 @@ patternProperties:
     description: Vitesse Semiconductor Corporation
   "^vivante,.*":
     description: Vivante Corporation
+  "^vivax,.*":
+    description: Vivax brand by M SAN Grupa d.o.o.
   "^vocore,.*":
     description: VoCore Studio
   "^voipac,.*":

Documentation/gpu/todo.rst

@@ -314,16 +314,19 @@ Level: Advanced
 Garbage collect fbdev scrolling acceleration
 --------------------------------------------
 
-Scroll acceleration is disabled in fbcon by hard-wiring p->scrollmode =
-SCROLL_REDRAW. There's a ton of code this will allow us to remove:
+Scroll acceleration has been disabled in fbcon. Now it works as the old
+SCROLL_REDRAW mode. A ton of code was removed in fbcon.c and the hook bmove was
+removed from fbcon_ops.
+Remaining tasks:
 
-- lots of code in fbcon.c
-
-- a bunch of the hooks in fbcon_ops, maybe the remaining hooks could be called
+- a bunch of the hooks in fbcon_ops could be removed or simplified by calling
   directly instead of the function table (with a switch on p->rotate)
 
 - fb_copyarea is unused after this, and can be deleted from all drivers
 
+- after that, fb_copyarea can be deleted from fb_ops in include/linux/fb.h as
+  well as cfb_copyarea
+
 Note that not all acceleration code can be deleted, since clearing and cursor
 support is still accelerated, which might be good candidates for further
 deletion projects.

drivers/dma-buf/dma-buf.c

@@ -209,19 +209,14 @@ static void dma_buf_poll_cb(struct dma_fence *fence, struct dma_fence_cb *cb)
 	dma_fence_put(fence);
 }
 
-static bool dma_buf_poll_shared(struct dma_resv *resv,
+static bool dma_buf_poll_add_cb(struct dma_resv *resv, bool write,
 				struct dma_buf_poll_cb_t *dcb)
 {
-	struct dma_resv_list *fobj = dma_resv_shared_list(resv);
+	struct dma_resv_iter cursor;
 	struct dma_fence *fence;
-	int i, r;
-
-	if (!fobj)
-		return false;
+	int r;
 
-	for (i = 0; i < fobj->shared_count; ++i) {
-		fence = rcu_dereference_protected(fobj->shared[i],
-						  dma_resv_held(resv));
+	dma_resv_for_each_fence(&cursor, resv, write, fence) {
 		dma_fence_get(fence);
 		r = dma_fence_add_callback(fence, &dcb->cb, dma_buf_poll_cb);
 		if (!r)
@@ -232,24 +227,6 @@ static bool dma_buf_poll_shared(struct dma_resv *resv,
 	return false;
 }
 
-static bool dma_buf_poll_excl(struct dma_resv *resv,
-			      struct dma_buf_poll_cb_t *dcb)
-{
-	struct dma_fence *fence = dma_resv_excl_fence(resv);
-	int r;
-
-	if (!fence)
-		return false;
-
-	dma_fence_get(fence);
-	r = dma_fence_add_callback(fence, &dcb->cb, dma_buf_poll_cb);
-	if (!r)
-		return true;
-	dma_fence_put(fence);
-
-	return false;
-}
-
 static __poll_t dma_buf_poll(struct file *file, poll_table *poll)
 {
 	struct dma_buf *dmabuf;
@@ -282,8 +259,7 @@ static __poll_t dma_buf_poll(struct file *file, poll_table *poll)
 		spin_unlock_irq(&dmabuf->poll.lock);
 
 		if (events & EPOLLOUT) {
-			if (!dma_buf_poll_shared(resv, dcb) &&
-			    !dma_buf_poll_excl(resv, dcb))
+			if (!dma_buf_poll_add_cb(resv, true, dcb))
 				/* No callback queued, wake up any other waiters */
 				dma_buf_poll_cb(NULL, &dcb->cb);
 			else
@@ -303,7 +279,7 @@ static __poll_t dma_buf_poll(struct file *file, poll_table *poll)
 		spin_unlock_irq(&dmabuf->poll.lock);
 
 		if (events & EPOLLIN) {
-			if (!dma_buf_poll_excl(resv, dcb))
+			if (!dma_buf_poll_add_cb(resv, false, dcb))
 				/* No callback queued, wake up any other waiters */
 				dma_buf_poll_cb(NULL, &dcb->cb);
 			else
@@ -1356,10 +1332,9 @@ static int dma_buf_debug_show(struct seq_file *s, void *unused)
 {
 	struct dma_buf *buf_obj;
 	struct dma_buf_attachment *attach_obj;
-	struct dma_resv *robj;
-	struct dma_resv_list *fobj;
+	struct dma_resv_iter cursor;
 	struct dma_fence *fence;
-	int count = 0, attach_count, shared_count, i;
+	int count = 0, attach_count;
 	size_t size = 0;
 	int ret;
 
@@ -1386,21 +1361,10 @@ static int dma_buf_debug_show(struct seq_file *s, void *unused)
 				file_inode(buf_obj->file)->i_ino,
 				buf_obj->name ?: "");
 
-		robj = buf_obj->resv;
-		fence = dma_resv_excl_fence(robj);
-		if (fence)
-			seq_printf(s, "\tExclusive fence: %s %s %ssignalled\n",
-				   fence->ops->get_driver_name(fence),
-				   fence->ops->get_timeline_name(fence),
-				   dma_fence_is_signaled(fence) ? "" : "un");
-
-		fobj = rcu_dereference_protected(robj->fence,
-						 dma_resv_held(robj));
-		shared_count = fobj ? fobj->shared_count : 0;
-		for (i = 0; i < shared_count; i++) {
-			fence = rcu_dereference_protected(fobj->shared[i],
-							  dma_resv_held(robj));
-			seq_printf(s, "\tShared fence: %s %s %ssignalled\n",
+		dma_resv_for_each_fence(&cursor, buf_obj->resv, true, fence) {
+			seq_printf(s, "\t%s fence: %s %s %ssignalled\n",
+				   dma_resv_iter_is_exclusive(&cursor) ?
+					"Exclusive" : "Shared",
 				   fence->ops->get_driver_name(fence),
 				   fence->ops->get_timeline_name(fence),
 				   dma_fence_is_signaled(fence) ? "" : "un");

drivers/dma-buf/dma-resv.c

@@ -333,10 +333,14 @@ static void dma_resv_iter_restart_unlocked(struct dma_resv_iter *cursor)
 {
 	cursor->seq = read_seqcount_begin(&cursor->obj->seq);
 	cursor->index = -1;
-	if (cursor->all_fences)
+	cursor->shared_count = 0;
+	if (cursor->all_fences) {
 		cursor->fences = dma_resv_shared_list(cursor->obj);
-	else
+		if (cursor->fences)
+			cursor->shared_count = cursor->fences->shared_count;
+	} else {
 		cursor->fences = NULL;
+	}
 	cursor->is_restarted = true;
 }
 
@@ -363,7 +367,7 @@ static void dma_resv_iter_walk_unlocked(struct dma_resv_iter *cursor)
 				continue;
 
 		} else if (!cursor->fences ||
-			   cursor->index >= cursor->fences->shared_count) {
+			   cursor->index >= cursor->shared_count) {
 			cursor->fence = NULL;
 			break;
 
@@ -423,6 +427,57 @@ struct dma_fence *dma_resv_iter_next_unlocked(struct dma_resv_iter *cursor)
 }
 EXPORT_SYMBOL(dma_resv_iter_next_unlocked);
 
+/**
+ * dma_resv_iter_first - first fence from a locked dma_resv object
+ * @cursor: cursor to record the current position
+ *
+ * Return the first fence in the dma_resv object while holding the
+ * &dma_resv.lock.
+ */
+struct dma_fence *dma_resv_iter_first(struct dma_resv_iter *cursor)
+{
+	struct dma_fence *fence;
+
+	dma_resv_assert_held(cursor->obj);
+
+	cursor->index = 0;
+	if (cursor->all_fences)
+		cursor->fences = dma_resv_shared_list(cursor->obj);
+	else
+		cursor->fences = NULL;
+
+	fence = dma_resv_excl_fence(cursor->obj);
+	if (!fence)
+		fence = dma_resv_iter_next(cursor);
+
+	cursor->is_restarted = true;
+	return fence;
+}
+EXPORT_SYMBOL_GPL(dma_resv_iter_first);
+
+/**
+ * dma_resv_iter_next - next fence from a locked dma_resv object
+ * @cursor: cursor to record the current position
+ *
+ * Return the next fences from the dma_resv object while holding the
+ * &dma_resv.lock.
+ */
+struct dma_fence *dma_resv_iter_next(struct dma_resv_iter *cursor)
+{
+	unsigned int idx;
+
+	dma_resv_assert_held(cursor->obj);
+
+	cursor->is_restarted = false;
+	if (!cursor->fences || cursor->index >= cursor->fences->shared_count)
+		return NULL;
+
+	idx = cursor->index++;
+	return rcu_dereference_protected(cursor->fences->shared[idx],
+					 dma_resv_held(cursor->obj));
+}
+EXPORT_SYMBOL_GPL(dma_resv_iter_next);
+
 /**
  * dma_resv_copy_fences - Copy all fences from src to dst.
  * @dst: the destination reservation object
@@ -448,10 +503,8 @@ int dma_resv_copy_fences(struct dma_resv *dst, struct dma_resv *src)
 			dma_resv_list_free(list);
 			dma_fence_put(excl);
 
-			if (cursor.fences) {
-				unsigned int cnt = cursor.fences->shared_count;
-
-				list = dma_resv_list_alloc(cnt);
+			if (cursor.shared_count) {
+				list = dma_resv_list_alloc(cursor.shared_count);
 				if (!list) {
 					dma_resv_iter_end(&cursor);
 					return -ENOMEM;
@@ -522,7 +575,7 @@ int dma_resv_get_fences(struct dma_resv *obj, struct dma_fence **fence_excl,
 			if (fence_excl)
 				dma_fence_put(*fence_excl);
 
-			count = cursor.fences ? cursor.fences->shared_count : 0;
+			count = cursor.shared_count;
 			count += fence_excl ? 0 : 1;
 
 			/* Eventually re-allocate the array */

drivers/gpu/drm/Kconfig

@@ -100,6 +100,21 @@ config DRM_DEBUG_DP_MST_TOPOLOGY_REFS
           This has the potential to use a lot of memory and print some very
           large kernel messages. If in doubt, say "N".
 
+config DRM_DEBUG_MODESET_LOCK
+	bool "Enable backtrace history for lock contention"
+	depends on STACKTRACE_SUPPORT
+	depends on DEBUG_KERNEL
+	depends on EXPERT
+	select STACKDEPOT
+	default y if DEBUG_WW_MUTEX_SLOWPATH
+	help
+	  Enable debug tracing of failures to gracefully handle drm modeset lock
+	  contention. A history of each drm modeset lock path hitting -EDEADLK
+	  will be saved until gracefully handled, and the backtrace will be
+	  printed when attempting to lock a contended lock.
+
+	  If in doubt, say "N".
+
 config DRM_FBDEV_EMULATION
 	bool "Enable legacy fbdev support for your modesetting driver"
 	depends on DRM

drivers/gpu/drm/bridge/lontium-lt9611uxc.c

@@ -167,9 +167,10 @@ static void lt9611uxc_hpd_work(struct work_struct *work)
 	struct lt9611uxc *lt9611uxc = container_of(work, struct lt9611uxc, work);
 	bool connected;
 
-	if (lt9611uxc->connector.dev)
-		drm_kms_helper_hotplug_event(lt9611uxc->connector.dev);
-	else {
+	if (lt9611uxc->connector.dev) {
+		if (lt9611uxc->connector.dev->mode_config.funcs)
+			drm_kms_helper_hotplug_event(lt9611uxc->connector.dev);
+	} else {
 
 		mutex_lock(&lt9611uxc->ocm_lock);
 		connected = lt9611uxc->hdmi_connected;
@@ -339,6 +340,8 @@ static int lt9611uxc_connector_init(struct drm_bridge *bridge, struct lt9611uxc
 		return -ENODEV;
 	}
 
+	lt9611uxc->connector.polled = DRM_CONNECTOR_POLL_HPD;
+
 	drm_connector_helper_add(&lt9611uxc->connector,
 				 &lt9611uxc_bridge_connector_helper_funcs);
 	ret = drm_connector_init(bridge->dev, &lt9611uxc->connector,

drivers/gpu/drm/bridge/lvds-codec.c

@@ -12,6 +12,7 @@
 #include <linux/platform_device.h>
 #include <linux/regulator/consumer.h>
 
+#include <drm/drm_atomic_helper.h>
 #include <drm/drm_bridge.h>
 #include <drm/drm_panel.h>
 
@@ -22,6 +23,7 @@ struct lvds_codec {
 	struct regulator *vcc;
 	struct gpio_desc *powerdown_gpio;
 	u32 connector_type;
+	unsigned int bus_format;
 };
 
 static inline struct lvds_codec *to_lvds_codec(struct drm_bridge *bridge)
@@ -74,12 +76,50 @@ static const struct drm_bridge_funcs funcs = {
 	.disable = lvds_codec_disable,
 };
 
+#define MAX_INPUT_SEL_FORMATS 1
+static u32 *
+lvds_codec_atomic_get_input_bus_fmts(struct drm_bridge *bridge,
+				     struct drm_bridge_state *bridge_state,
+				     struct drm_crtc_state *crtc_state,
+				     struct drm_connector_state *conn_state,
+				     u32 output_fmt,
+				     unsigned int *num_input_fmts)
+{
+	struct lvds_codec *lvds_codec = to_lvds_codec(bridge);
+	u32 *input_fmts;
+
+	*num_input_fmts = 0;
+
+	input_fmts = kcalloc(MAX_INPUT_SEL_FORMATS, sizeof(*input_fmts),
+			     GFP_KERNEL);
+	if (!input_fmts)
+		return NULL;
+
+	input_fmts[0] = lvds_codec->bus_format;
+	*num_input_fmts = MAX_INPUT_SEL_FORMATS;
+
+	return input_fmts;
+}
+
+static const struct drm_bridge_funcs funcs_decoder = {
+	.attach = lvds_codec_attach,
+	.enable = lvds_codec_enable,
+	.disable = lvds_codec_disable,
+	.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
+	.atomic_reset = drm_atomic_helper_bridge_reset,
+	.atomic_get_input_bus_fmts = lvds_codec_atomic_get_input_bus_fmts,
+};
+
 static int lvds_codec_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct device_node *panel_node;
+	struct device_node *bus_node;
 	struct drm_panel *panel;
 	struct lvds_codec *lvds_codec;
+	const char *mapping;
+	int ret;
 
 	lvds_codec = devm_kzalloc(dev, sizeof(*lvds_codec), GFP_KERNEL);
 	if (!lvds_codec)
@@ -119,13 +159,47 @@ static int lvds_codec_probe(struct platform_device *pdev)
 	if (IS_ERR(lvds_codec->panel_bridge))
 		return PTR_ERR(lvds_codec->panel_bridge);
 
+	lvds_codec->bridge.funcs = &funcs;
+
+	/*
+	 * Decoder input LVDS format is a property of the decoder chip or even
+	 * its strapping. Handle data-mapping the same way lvds-panel does. In
+	 * case data-mapping is not present, do nothing, since there are still
+	 * legacy bindings which do not specify this property.
+	 */
+	if (lvds_codec->connector_type != DRM_MODE_CONNECTOR_LVDS) {
+		bus_node = of_graph_get_endpoint_by_regs(dev->of_node, 0, 0);
+		if (!bus_node) {
+			dev_dbg(dev, "bus DT node not found\n");
+			return -ENXIO;
+		}
+
+		ret = of_property_read_string(bus_node, "data-mapping",
+					      &mapping);
+		of_node_put(bus_node);
+		if (ret < 0) {
+			dev_warn(dev, "missing 'data-mapping' DT property\n");
+		} else {
+			if (!strcmp(mapping, "jeida-18")) {
+				lvds_codec->bus_format = MEDIA_BUS_FMT_RGB666_1X7X3_SPWG;
+			} else if (!strcmp(mapping, "jeida-24")) {
+				lvds_codec->bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA;
+			} else if (!strcmp(mapping, "vesa-24")) {
+				lvds_codec->bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG;
+			} else {
+				dev_err(dev, "invalid 'data-mapping' DT property\n");
+				return -EINVAL;
+			}
+			lvds_codec->bridge.funcs = &funcs_decoder;
+		}
+	}
+
 	/*
 	 * The panel_bridge bridge is attached to the panel's of_node,
 	 * but we need a bridge attached to our of_node for our user
 	 * to look up.
 	 */
 	lvds_codec->bridge.of_node = dev->of_node;
-	lvds_codec->bridge.funcs = &funcs;
 	drm_bridge_add(&lvds_codec->bridge);
 
 	platform_set_drvdata(pdev, lvds_codec);

drivers/gpu/drm/bridge/nwl-dsi.c

@@ -939,6 +939,40 @@ static void nwl_dsi_bridge_detach(struct drm_bridge *bridge)
 	drm_of_panel_bridge_remove(dsi->dev->of_node, 1, 0);
 }
 
+static u32 *nwl_bridge_atomic_get_input_bus_fmts(struct drm_bridge *bridge,
+						 struct drm_bridge_state *bridge_state,
+						 struct drm_crtc_state *crtc_state,
+						 struct drm_connector_state *conn_state,
+						 u32 output_fmt,
+						 unsigned int *num_input_fmts)
+{
+	u32 *input_fmts, input_fmt;
+
+	*num_input_fmts = 0;
+
+	switch (output_fmt) {
+	/* If MEDIA_BUS_FMT_FIXED is tested, return default bus format */
+	case MEDIA_BUS_FMT_FIXED:
+		input_fmt = MEDIA_BUS_FMT_RGB888_1X24;
+		break;
+	case MEDIA_BUS_FMT_RGB888_1X24:
+	case MEDIA_BUS_FMT_RGB666_1X18:
+	case MEDIA_BUS_FMT_RGB565_1X16:
+		input_fmt = output_fmt;
+		break;
+	default:
+		return NULL;
+	}
+
+	input_fmts = kcalloc(1, sizeof(*input_fmts), GFP_KERNEL);
+	if (!input_fmts)
+		return NULL;
+	input_fmts[0] = input_fmt;
+	*num_input_fmts = 1;
+
+	return input_fmts;
+}
+
 static const struct drm_bridge_funcs nwl_dsi_bridge_funcs = {
 	.atomic_duplicate_state	= drm_atomic_helper_bridge_duplicate_state,
 	.atomic_destroy_state	= drm_atomic_helper_bridge_destroy_state,
@@ -946,6 +980,7 @@ static const struct drm_bridge_funcs nwl_dsi_bridge_funcs = {
 	.atomic_check		= nwl_dsi_bridge_atomic_check,
 	.atomic_enable		= nwl_dsi_bridge_atomic_enable,
 	.atomic_disable		= nwl_dsi_bridge_atomic_disable,
+	.atomic_get_input_bus_fmts = nwl_bridge_atomic_get_input_bus_fmts,
 	.mode_set		= nwl_dsi_bridge_mode_set,
 	.mode_valid		= nwl_dsi_bridge_mode_valid,
 	.attach			= nwl_dsi_bridge_attach,

drivers/gpu/drm/bridge/ti-sn65dsi83.c

@@ -288,6 +288,19 @@ static int sn65dsi83_attach(struct drm_bridge *bridge,
 	return ret;
 }
 
+static void sn65dsi83_detach(struct drm_bridge *bridge)
+{
+	struct sn65dsi83 *ctx = bridge_to_sn65dsi83(bridge);
+
+	if (!ctx->dsi)
+		return;
+
+	mipi_dsi_detach(ctx->dsi);
+	mipi_dsi_device_unregister(ctx->dsi);
+	drm_bridge_remove(&ctx->bridge);
+	ctx->dsi = NULL;
+}
+
 static void sn65dsi83_atomic_pre_enable(struct drm_bridge *bridge,
 					struct drm_bridge_state *old_bridge_state)
 {
@@ -583,6 +596,7 @@ sn65dsi83_atomic_get_input_bus_fmts(struct drm_bridge *bridge,
 
 static const struct drm_bridge_funcs sn65dsi83_funcs = {
 	.attach			= sn65dsi83_attach,
+	.detach			= sn65dsi83_detach,
 	.atomic_pre_enable	= sn65dsi83_atomic_pre_enable,
 	.atomic_enable		= sn65dsi83_atomic_enable,
 	.atomic_disable		= sn65dsi83_atomic_disable,
@@ -697,9 +711,6 @@ static int sn65dsi83_remove(struct i2c_client *client)
 {
 	struct sn65dsi83 *ctx = i2c_get_clientdata(client);
 
-	mipi_dsi_detach(ctx->dsi);
-	mipi_dsi_device_unregister(ctx->dsi);
-	drm_bridge_remove(&ctx->bridge);
 	of_node_put(ctx->host_node);
 
 	return 0;

drivers/gpu/drm/drm_connector.c

@@ -625,6 +625,8 @@ int drm_connector_register_all(struct drm_device *dev)
  *
  * In contrast to the other drm_get_*_name functions this one here returns a
  * const pointer and hence is threadsafe.
+ *
+ * Returns: connector status string
  */
 const char *drm_get_connector_status_name(enum drm_connector_status status)
 {
@@ -707,7 +709,7 @@ __drm_connector_put_safe(struct drm_connector *conn)
  * drm_connector_list_iter_next - return next connector
  * @iter: connector_list iterator
  *
- * Returns the next connector for @iter, or NULL when the list walk has
+ * Returns: the next connector for @iter, or NULL when the list walk has
  * completed.
  */
 struct drm_connector *
@@ -780,6 +782,8 @@ static const struct drm_prop_enum_list drm_subpixel_enum_list[] = {
  *
  * Note you could abuse this and return something out of bounds, but that
  * would be a caller error.  No unscrubbed user data should make it here.
+ *
+ * Returns: string describing an enumerated subpixel property
  */
 const char *drm_get_subpixel_order_name(enum subpixel_order order)
 {
@@ -809,6 +813,9 @@ static const struct drm_prop_enum_list drm_link_status_enum_list[] = {
  * Store the supported bus formats in display info structure.
  * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
  * a full list of available formats.
+ *
+ * Returns:
+ * 0 on success or a negative error code on failure.
  */
 int drm_display_info_set_bus_formats(struct drm_display_info *info,
 				     const u32 *formats,
@@ -1326,6 +1333,8 @@ int drm_connector_create_standard_properties(struct drm_device *dev)
  * @dev: DRM device
  *
  * Called by a driver the first time a DVI-I connector is made.
+ *
+ * Returns: %0
  */
 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
 {
@@ -1397,6 +1406,8 @@ EXPORT_SYMBOL(drm_connector_attach_dp_subconnector_property);
  *	Game:
  *		Content type is game
  *
+ *	The meaning of each content type is defined in CTA-861-G table 15.
+ *
  *	Drivers can set up this property by calling
  *	drm_connector_attach_content_type_property(). Decoding to
  *	infoframe values is done through drm_hdmi_avi_infoframe_content_type().
@@ -1407,6 +1418,8 @@ EXPORT_SYMBOL(drm_connector_attach_dp_subconnector_property);
  * @connector: connector to attach content type property on.
  *
  * Called by a driver the first time a HDMI connector is made.
+ *
+ * Returns: %0
  */
 int drm_connector_attach_content_type_property(struct drm_connector *connector)
 {
@@ -1487,6 +1500,9 @@ EXPORT_SYMBOL(drm_connector_attach_tv_margin_properties);
  * creates the TV margin properties for a given device. No need to call this
  * function for an SDTV connector, it's already called from
  * drm_mode_create_tv_properties().
+ *
+ * Returns:
+ * 0 on success or a negative error code on failure.
  */
 int drm_mode_create_tv_margin_properties(struct drm_device *dev)
 {
@@ -1527,6 +1543,9 @@ EXPORT_SYMBOL(drm_mode_create_tv_margin_properties);
  * the TV specific connector properties for a given device.  Caller is
  * responsible for allocating a list of format names and passing them to
  * this routine.
+ *
+ * Returns:
+ * 0 on success or a negative error code on failure.
  */
 int drm_mode_create_tv_properties(struct drm_device *dev,
 				  unsigned int num_modes,
@@ -1622,6 +1641,8 @@ EXPORT_SYMBOL(drm_mode_create_tv_properties);
  * Atomic drivers should use drm_connector_attach_scaling_mode_property()
  * instead to correctly assign &drm_connector_state.scaling_mode
  * in the atomic state.
+ *
+ * Returns: %0
  */
 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
 {
@@ -1939,6 +1960,9 @@ EXPORT_SYMBOL(drm_mode_create_content_type_property);
  * @dev: DRM device
  *
  * Create the suggested x/y offset property for connectors.
+ *
+ * Returns:
+ * 0 on success or a negative error code on failure.
  */
 int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
 {
@@ -2312,8 +2336,8 @@ int drm_connector_set_panel_orientation(
 EXPORT_SYMBOL(drm_connector_set_panel_orientation);
 
 /**
- * drm_connector_set_panel_orientation_with_quirk -
- *	set the connector's panel_orientation after checking for quirks
+ * drm_connector_set_panel_orientation_with_quirk - set the
+ *	connector's panel_orientation after checking for quirks
  * @connector: connector for which to init the panel-orientation property.
  * @panel_orientation: drm_panel_orientation value to set
  * @width: width in pixels of the panel, used for panel quirk detection
@@ -2597,7 +2621,7 @@ struct drm_connector *drm_connector_find_by_fwnode(struct fwnode_handle *fwnode)
 
 /**
  * drm_connector_oob_hotplug_event - Report out-of-band hotplug event to connector
- * @connector: connector to report the event on
+ * @connector_fwnode: fwnode_handle to report the event on
  *
  * On some hardware a hotplug event notification may come from outside the display
  * driver / device. An example of this is some USB Type-C setups where the hardware

drivers/gpu/drm/drm_gem.c

@@ -1340,31 +1340,15 @@ int drm_gem_fence_array_add_implicit(struct xarray *fence_array,
 				     struct drm_gem_object *obj,
 				     bool write)
 {
-	int ret;
-	struct dma_fence **fences;
-	unsigned int i, fence_count;
-
-	if (!write) {
-		struct dma_fence *fence =
-			dma_resv_get_excl_unlocked(obj->resv);
-
-		return drm_gem_fence_array_add(fence_array, fence);
-	}
+	struct dma_resv_iter cursor;
+	struct dma_fence *fence;
+	int ret = 0;
 
-	ret = dma_resv_get_fences(obj->resv, NULL,
-						&fence_count, &fences);
-	if (ret || !fence_count)
-		return ret;
-
-	for (i = 0; i < fence_count; i++) {
-		ret = drm_gem_fence_array_add(fence_array, fences[i]);
+	dma_resv_for_each_fence(&cursor, obj->resv, write, fence) {
+		ret = drm_gem_fence_array_add(fence_array, fence);
 		if (ret)
 			break;
 	}
-
-	for (; i < fence_count; i++)
-		dma_fence_put(fences[i]);
-	kfree(fences);
 	return ret;
 }
 EXPORT_SYMBOL(drm_gem_fence_array_add_implicit);

drivers/gpu/drm/drm_modeset_lock.c

@@ -25,6 +25,7 @@
 #include <drm/drm_crtc.h>
 #include <drm/drm_device.h>
 #include <drm/drm_modeset_lock.h>
+#include <drm/drm_print.h>
 
 /**
  * DOC: kms locking
@@ -77,6 +78,45 @@
 
 static DEFINE_WW_CLASS(crtc_ww_class);
 
+#if IS_ENABLED(CONFIG_DRM_DEBUG_MODESET_LOCK)
+static noinline depot_stack_handle_t __stack_depot_save(void)
+{
+	unsigned long entries[8];
+	unsigned int n;
+
+	n = stack_trace_save(entries, ARRAY_SIZE(entries), 1);
+
+	return stack_depot_save(entries, n, GFP_NOWAIT | __GFP_NOWARN);
+}
+
+static void __stack_depot_print(depot_stack_handle_t stack_depot)
+{
+	struct drm_printer p = drm_debug_printer("drm_modeset_lock");
+	unsigned long *entries;
+	unsigned int nr_entries;
+	char *buf;
+
+	buf = kmalloc(PAGE_SIZE, GFP_NOWAIT | __GFP_NOWARN);
+	if (!buf)
+		return;
+
+	nr_entries = stack_depot_fetch(stack_depot, &entries);
+	stack_trace_snprint(buf, PAGE_SIZE, entries, nr_entries, 2);
+
+	drm_printf(&p, "attempting to lock a contended lock without backoff:\n%s", buf);
+
+	kfree(buf);
+}
+#else /* CONFIG_DRM_DEBUG_MODESET_LOCK */
+static depot_stack_handle_t __stack_depot_save(void)
+{
+	return 0;
+}
+static void __stack_depot_print(depot_stack_handle_t stack_depot)
+{
+}
+#endif /* CONFIG_DRM_DEBUG_MODESET_LOCK */
+
 /**
  * drm_modeset_lock_all - take all modeset locks
  * @dev: DRM device
@@ -225,7 +265,9 @@ EXPORT_SYMBOL(drm_modeset_acquire_fini);
  */
 void drm_modeset_drop_locks(struct drm_modeset_acquire_ctx *ctx)
 {
-	WARN_ON(ctx->contended);
+	if (WARN_ON(ctx->contended))
+		__stack_depot_print(ctx->stack_depot);
+
 	while (!list_empty(&ctx->locked)) {
 		struct drm_modeset_lock *lock;
 
@@ -243,7 +285,8 @@ static inline int modeset_lock(struct drm_modeset_lock *lock,
 {
 	int ret;
 
-	WARN_ON(ctx->contended);
+	if (WARN_ON(ctx->contended))
+		__stack_depot_print(ctx->stack_depot);
 
 	if (ctx->trylock_only) {
 		lockdep_assert_held(&ctx->ww_ctx);
@@ -274,6 +317,7 @@ static inline int modeset_lock(struct drm_modeset_lock *lock,
 		ret = 0;
 	} else if (ret == -EDEADLK) {
 		ctx->contended = lock;
+		ctx->stack_depot = __stack_depot_save();
 	}
 
 	return ret;
@@ -296,6 +340,7 @@ int drm_modeset_backoff(struct drm_modeset_acquire_ctx *ctx)
 	struct drm_modeset_lock *contended = ctx->contended;
 
 	ctx->contended = NULL;
+	ctx->stack_depot = 0;
 
 	if (WARN_ON(!contended))
 		return 0;

drivers/gpu/drm/drm_plane_helper.c

@@ -123,7 +123,6 @@ static int drm_plane_helper_check_update(struct drm_plane *plane,
 		.crtc_w = drm_rect_width(dst),
 		.crtc_h = drm_rect_height(dst),
 		.rotation = rotation,
-		.visible = *visible,
 	};
 	struct drm_crtc_state crtc_state = {
 		.crtc = crtc,

drivers/gpu/drm/i915/i915_request.c

@@ -1537,38 +1537,14 @@ i915_request_await_object(struct i915_request *to,
 			  struct drm_i915_gem_object *obj,
 			  bool write)
 {
-	struct dma_fence *excl;
+	struct dma_resv_iter cursor;
+	struct dma_fence *fence;
 	int ret = 0;
 
-	if (write) {
-		struct dma_fence **shared;
-		unsigned int count, i;
-
-		ret = dma_resv_get_fences(obj->base.resv, &excl, &count,
-					  &shared);
+	dma_resv_for_each_fence(&cursor, obj->base.resv, write, fence) {
+		ret = i915_request_await_dma_fence(to, fence);
 		if (ret)
-			return ret;
-
-		for (i = 0; i < count; i++) {
-			ret = i915_request_await_dma_fence(to, shared[i]);
-			if (ret)
-				break;
-
-			dma_fence_put(shared[i]);
-		}
-
-		for (; i < count; i++)
-			dma_fence_put(shared[i]);
-		kfree(shared);
-	} else {
-		excl = dma_resv_get_excl_unlocked(obj->base.resv);
-	}
-
-	if (excl) {
-		if (ret == 0)
-			ret = i915_request_await_dma_fence(to, excl);
-
-		dma_fence_put(excl);
+			break;
 	}
 
 	return ret;

drivers/gpu/drm/mxsfb/mxsfb_kms.c

@@ -88,7 +88,7 @@ static void mxsfb_set_formats(struct mxsfb_drm_private *mxsfb,
 		ctrl |= CTRL_BUS_WIDTH_24;
 		break;
 	default:
-		dev_err(drm->dev, "Unknown media bus format %d\n", bus_format);
+		dev_err(drm->dev, "Unknown media bus format 0x%x\n", bus_format);
 		break;
 	}
 
@@ -362,6 +362,12 @@ static void mxsfb_crtc_atomic_enable(struct drm_crtc *crtc,
 			drm_atomic_get_new_bridge_state(state,
 							mxsfb->bridge);
 		bus_format = bridge_state->input_bus_cfg.format;
+		if (bus_format == MEDIA_BUS_FMT_FIXED) {
+			dev_warn_once(drm->dev,
+				      "Bridge does not provide bus format, assuming MEDIA_BUS_FMT_RGB888_1X24.\n"
+				      "Please fix bridge driver by handling atomic_get_input_bus_fmts.\n");
+			bus_format = MEDIA_BUS_FMT_RGB888_1X24;
+		}
 	}
 
 	/* If there is no bridge, use bus format from connector */

drivers/gpu/drm/nouveau/nouveau_bo.c

@@ -1249,7 +1249,6 @@ nouveau_ttm_tt_populate(struct ttm_device *bdev,
 {
 	struct ttm_tt *ttm_dma = (void *)ttm;
 	struct nouveau_drm *drm;
-	struct device *dev;
 	bool slave = !!(ttm->page_flags & TTM_TT_FLAG_EXTERNAL);
 
 	if (ttm_tt_is_populated(ttm))
@@ -1262,7 +1261,6 @@ nouveau_ttm_tt_populate(struct ttm_device *bdev,
 	}
 
 	drm = nouveau_bdev(bdev);
-	dev = drm->dev->dev;
 
 	return ttm_pool_alloc(&drm->ttm.bdev.pool, ttm, ctx);
 }
@@ -1272,7 +1270,6 @@ nouveau_ttm_tt_unpopulate(struct ttm_device *bdev,
 			  struct ttm_tt *ttm)
 {
 	struct nouveau_drm *drm;
-	struct device *dev;
 	bool slave = !!(ttm->page_flags & TTM_TT_FLAG_EXTERNAL);
 
 	if (slave)
@@ -1281,7 +1278,6 @@ nouveau_ttm_tt_unpopulate(struct ttm_device *bdev,
 	nouveau_ttm_tt_unbind(bdev, ttm);
 
 	drm = nouveau_bdev(bdev);
-	dev = drm->dev->dev;
 
 	return ttm_pool_free(&drm->ttm.bdev.pool, ttm);
 }

drivers/gpu/drm/nouveau/nouveau_gem.c

@@ -337,7 +337,7 @@ nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 	struct ttm_buffer_object *bo = &nvbo->bo;
 	uint32_t domains = valid_domains & nvbo->valid_domains &
 		(write_domains ? write_domains : read_domains);
-	uint32_t pref_domains = 0;;
+	uint32_t pref_domains = 0;
 
 	if (!domains)
 		return -EINVAL;

drivers/gpu/drm/nouveau/nvkm/engine/nvenc/base.c

@@ -21,7 +21,6 @@
  */
 #include "priv.h"
 
-#include "priv.h"
 #include <core/firmware.h>
 
 static void *

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/uvmm.c

@@ -299,7 +299,7 @@ nvkm_uvmm_mthd_page(struct nvkm_uvmm *uvmm, void *argv, u32 argc)
 	page = uvmm->vmm->func->page;
 	for (nr = 0; page[nr].shift; nr++);
 
-	if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
+	if (!(nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
 		if ((index = args->v0.index) >= nr)
 			return -EINVAL;
 		type = page[index].type;

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgp100.c

@@ -488,7 +488,7 @@ gp100_vmm_fault_cancel(struct nvkm_vmm *vmm, void *argv, u32 argc)
 		struct gp100_vmm_fault_cancel_v0 v0;
 	} *args = argv;
 	int ret = -ENOSYS;
-	u32 inst, aper;
+	u32 aper;
 
 	if ((ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false)))
 		return ret;
@@ -502,7 +502,7 @@ gp100_vmm_fault_cancel(struct nvkm_vmm *vmm, void *argv, u32 argc)
 	args->v0.inst |= 0x80000000;
 
 	if (!WARN_ON(nvkm_gr_ctxsw_pause(device))) {
-		if ((inst = nvkm_gr_ctxsw_inst(device)) == args->v0.inst) {
+		if (nvkm_gr_ctxsw_inst(device) == args->v0.inst) {
 			gf100_vmm_invalidate(vmm, 0x0000001b
 					     /* CANCEL_TARGETED. */ |
 					     (args->v0.hub    << 20) |

drivers/gpu/drm/panel/Kconfig

@@ -520,6 +520,16 @@ config DRM_PANEL_SHARP_LS043T1LE01
 	  Say Y here if you want to enable support for Sharp LS043T1LE01 qHD
 	  (540x960) DSI panel as found on the Qualcomm APQ8074 Dragonboard
 
+config DRM_PANEL_SHARP_LS060T1SX01
+	tristate "Sharp LS060T1SX01 FullHD video mode panel"
+	depends on OF
+	depends on DRM_MIPI_DSI
+	depends on BACKLIGHT_CLASS_DEVICE
+	help
+	  Say Y here if you want to enable support for Sharp LS060T1SX01 6.0"
+	  FullHD (1080x1920) DSI panel as found in Dragonboard Display Adapter
+	  Bundle.
+
 config DRM_PANEL_SITRONIX_ST7701
 	tristate "Sitronix ST7701 panel driver"
 	depends on OF

drivers/gpu/drm/panel/Makefile

@@ -53,6 +53,7 @@ obj-$(CONFIG_DRM_PANEL_SEIKO_43WVF1G) += panel-seiko-43wvf1g.o
 obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o
 obj-$(CONFIG_DRM_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o
 obj-$(CONFIG_DRM_PANEL_SHARP_LS043T1LE01) += panel-sharp-ls043t1le01.o
+obj-$(CONFIG_DRM_PANEL_SHARP_LS060T1SX01) += panel-sharp-ls060t1sx01.o
 obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7701) += panel-sitronix-st7701.o
 obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7703) += panel-sitronix-st7703.o
 obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7789V) += panel-sitronix-st7789v.o

drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c

@@ -8,6 +8,7 @@
 #include <linux/backlight.h>
 #include <linux/delay.h>
 #include <linux/gpio/consumer.h>
+#include <linux/media-bus-format.h>
 #include <linux/module.h>
 #include <linux/of_device.h>
 #include <linux/regulator/consumer.h>
@@ -220,6 +221,10 @@ static const struct drm_display_mode default_mode_ys = {
 	.height_mm   = 130,
 };
 
+static const u32 mantix_bus_formats[] = {
+	MEDIA_BUS_FMT_RGB888_1X24,
+};
+
 static int mantix_get_modes(struct drm_panel *panel,
 			    struct drm_connector *connector)
 {
@@ -241,6 +246,10 @@ static int mantix_get_modes(struct drm_panel *panel,
 	connector->display_info.height_mm = mode->height_mm;
 	drm_mode_probed_add(connector, mode);
 
+	drm_display_info_set_bus_formats(&connector->display_info,
+					 mantix_bus_formats,
+					 ARRAY_SIZE(mantix_bus_formats));
+
 	return 1;
 }
 

drivers/gpu/drm/panel/panel-samsung-s6e63m0-dsi.c

@@ -116,7 +116,8 @@ static int s6e63m0_dsi_probe(struct mipi_dsi_device *dsi)
 static int s6e63m0_dsi_remove(struct mipi_dsi_device *dsi)
 {
 	mipi_dsi_detach(dsi);
-	return s6e63m0_remove(&dsi->dev);
+	s6e63m0_remove(&dsi->dev);
+	return 0;
 }
 
 static const struct of_device_id s6e63m0_dsi_of_match[] = {

drivers/gpu/drm/panel/panel-samsung-s6e63m0-spi.c

@@ -64,7 +64,8 @@ static int s6e63m0_spi_probe(struct spi_device *spi)
 
 static int s6e63m0_spi_remove(struct spi_device *spi)
 {
-	return s6e63m0_remove(&spi->dev);
+	s6e63m0_remove(&spi->dev);
+	return 0;
 }
 
 static const struct of_device_id s6e63m0_spi_of_match[] = {

drivers/gpu/drm/panel/panel-samsung-s6e63m0.c

@@ -749,13 +749,11 @@ int s6e63m0_probe(struct device *dev, void *trsp,
 }
 EXPORT_SYMBOL_GPL(s6e63m0_probe);
 
-int s6e63m0_remove(struct device *dev)
+void s6e63m0_remove(struct device *dev)
 {
 	struct s6e63m0 *ctx = dev_get_drvdata(dev);
 
 	drm_panel_remove(&ctx->panel);
-
-	return 0;
 }
 EXPORT_SYMBOL_GPL(s6e63m0_remove);
 

drivers/gpu/drm/panel/panel-samsung-s6e63m0.h

@@ -35,6 +35,6 @@ int s6e63m0_probe(struct device *dev, void *trsp,
 				   const u8 *data,
 				   size_t len),
 		  bool dsi_mode);
-int s6e63m0_remove(struct device *dev);
+void s6e63m0_remove(struct device *dev);
 
 #endif /* _PANEL_SAMSUNG_S6E63M0_H */

drivers/gpu/drm/panel/panel-sharp-ls060t1sx01.c

+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (c) 2021 Linaro Ltd.
+ * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree:
+ *   Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regulator/consumer.h>
+
+#include <video/mipi_display.h>
+
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+
+struct sharp_ls060 {
+	struct drm_panel panel;
+	struct mipi_dsi_device *dsi;
+	struct regulator *vddi_supply;
+	struct regulator *vddh_supply;
+	struct regulator *avdd_supply;
+	struct regulator *avee_supply;
+	struct gpio_desc *reset_gpio;
+	bool prepared;
+};
+
+static inline struct sharp_ls060 *to_sharp_ls060(struct drm_panel *panel)
+{
+	return container_of(panel, struct sharp_ls060, panel);
+}
+
+#define dsi_dcs_write_seq(dsi, seq...) ({				\
+		static const u8 d[] = { seq };				\
+									\
+		mipi_dsi_dcs_write_buffer(dsi, d, ARRAY_SIZE(d));	\
+	})
+
+static void sharp_ls060_reset(struct sharp_ls060 *ctx)
+{
+	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+	usleep_range(10000, 11000);
+	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+	usleep_range(10000, 11000);
+	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+	usleep_range(10000, 11000);
+}
+
+static int sharp_ls060_on(struct sharp_ls060 *ctx)
+{
+	struct mipi_dsi_device *dsi = ctx->dsi;
+	struct device *dev = &dsi->dev;
+	int ret;
+
+	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+	ret = dsi_dcs_write_seq(dsi, 0xbb, 0x13);
+	if (ret < 0) {
+		dev_err(dev, "Failed to send command: %d\n", ret);
+		return ret;
+	}
+
+	ret = dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_MEMORY_START);
+	if (ret < 0) {
+		dev_err(dev, "Failed to send command: %d\n", ret);
+		return ret;
+	}
+
+	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
+		return ret;
+	}
+	msleep(120);
+
+	ret = mipi_dsi_dcs_set_display_on(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to set display on: %d\n", ret);
+		return ret;
+	}
+	msleep(50);
+
+	return 0;
+}
+
+static int sharp_ls060_off(struct sharp_ls060 *ctx)
+{
+	struct mipi_dsi_device *dsi = ctx->dsi;
+	struct device *dev = &dsi->dev;
+	int ret;
+
+	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+	ret = mipi_dsi_dcs_set_display_off(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to set display off: %d\n", ret);
+		return ret;
+	}
+	usleep_range(2000, 3000);
+
+	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
+		return ret;
+	}
+	msleep(121);
+
+	return 0;
+}
+
+static int sharp_ls060_prepare(struct drm_panel *panel)
+{
+	struct sharp_ls060 *ctx = to_sharp_ls060(panel);
+	struct device *dev = &ctx->dsi->dev;
+	int ret;
+
+	if (ctx->prepared)
+		return 0;
+
+	ret = regulator_enable(ctx->vddi_supply);
+	if (ret < 0)
+		return ret;
+
+	ret = regulator_enable(ctx->avdd_supply);
+	if (ret < 0)
+		goto err_avdd;
+
+	usleep_range(1000, 2000);
+
+	ret = regulator_enable(ctx->avee_supply);
+	if (ret < 0)
+		goto err_avee;
+
+	usleep_range(10000, 11000);
+
+	ret = regulator_enable(ctx->vddh_supply);
+	if (ret < 0)
+		goto err_vddh;
+
+	usleep_range(10000, 11000);
+
+	sharp_ls060_reset(ctx);
+
+	ret = sharp_ls060_on(ctx);
+	if (ret < 0) {
+		dev_err(dev, "Failed to initialize panel: %d\n", ret);
+		goto err_on;
+	}
+
+	ctx->prepared = true;
+
+	return 0;
+
+err_on:
+	regulator_disable(ctx->vddh_supply);
+
+	usleep_range(10000, 11000);
+
+err_vddh:
+	regulator_disable(ctx->avee_supply);
+
+err_avee:
+	regulator_disable(ctx->avdd_supply);
+
+	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+
+err_avdd:
+	regulator_disable(ctx->vddi_supply);
+
+	return ret;
+}
+
+static int sharp_ls060_unprepare(struct drm_panel *panel)
+{
+	struct sharp_ls060 *ctx = to_sharp_ls060(panel);
+	struct device *dev = &ctx->dsi->dev;
+	int ret;
+
+	if (!ctx->prepared)
+		return 0;
+
+	ret = sharp_ls060_off(ctx);
+	if (ret < 0)
+		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
+
+	regulator_disable(ctx->vddh_supply);
+
+	usleep_range(10000, 11000);
+
+	regulator_disable(ctx->avee_supply);
+	regulator_disable(ctx->avdd_supply);
+
+	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+
+	regulator_disable(ctx->vddi_supply);
+
+	ctx->prepared = false;
+	return 0;
+}
+
+static const struct drm_display_mode sharp_ls060_mode = {
+	.clock = (1080 + 96 + 16 + 64) * (1920 + 4 + 1 + 16) * 60 / 1000,
+	.hdisplay = 1080,
+	.hsync_start = 1080 + 96,
+	.hsync_end = 1080 + 96 + 16,
+	.htotal = 1080 + 96 + 16 + 64,
+	.vdisplay = 1920,
+	.vsync_start = 1920 + 4,
+	.vsync_end = 1920 + 4 + 1,
+	.vtotal = 1920 + 4 + 1 + 16,
+	.width_mm = 75,
+	.height_mm = 132,
+};
+
+static int sharp_ls060_get_modes(struct drm_panel *panel,
+				 struct drm_connector *connector)
+{
+	struct drm_display_mode *mode;
+
+	mode = drm_mode_duplicate(connector->dev, &sharp_ls060_mode);
+	if (!mode)
+		return -ENOMEM;
+
+	drm_mode_set_name(mode);
+
+	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+	connector->display_info.width_mm = mode->width_mm;
+	connector->display_info.height_mm = mode->height_mm;
+	drm_mode_probed_add(connector, mode);
+
+	return 1;
+}
+
+static const struct drm_panel_funcs sharp_ls060_panel_funcs = {
+	.prepare = sharp_ls060_prepare,
+	.unprepare = sharp_ls060_unprepare,
+	.get_modes = sharp_ls060_get_modes,
+};
+
+static int sharp_ls060_probe(struct mipi_dsi_device *dsi)
+{
+	struct device *dev = &dsi->dev;
+	struct sharp_ls060 *ctx;
+	int ret;
+
+	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+	if (!ctx)
+		return -ENOMEM;
+
+	ctx->vddi_supply = devm_regulator_get(dev, "vddi");
+	if (IS_ERR(ctx->vddi_supply))
+		return PTR_ERR(ctx->vddi_supply);
+
+	ctx->vddh_supply = devm_regulator_get(dev, "vddh");
+	if (IS_ERR(ctx->vddh_supply))
+		return PTR_ERR(ctx->vddh_supply);
+
+	ctx->avdd_supply = devm_regulator_get(dev, "avdd");
+	if (IS_ERR(ctx->avdd_supply))
+		return PTR_ERR(ctx->avdd_supply);
+
+	ctx->avee_supply = devm_regulator_get(dev, "avee");
+	if (IS_ERR(ctx->avee_supply))
+		return PTR_ERR(ctx->avee_supply);
+
+	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(ctx->reset_gpio))
+		return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
+				     "Failed to get reset-gpios\n");
+
+	ctx->dsi = dsi;
+	mipi_dsi_set_drvdata(dsi, ctx);
+
+	dsi->lanes = 4;
+	dsi->format = MIPI_DSI_FMT_RGB888;
+	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
+			  MIPI_DSI_MODE_NO_EOT_PACKET |
+			  MIPI_DSI_CLOCK_NON_CONTINUOUS;
+
+	drm_panel_init(&ctx->panel, dev, &sharp_ls060_panel_funcs,
+		       DRM_MODE_CONNECTOR_DSI);
+
+	ret = drm_panel_of_backlight(&ctx->panel);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to get backlight\n");
+
+	drm_panel_add(&ctx->panel);
+
+	ret = mipi_dsi_attach(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
+		drm_panel_remove(&ctx->panel);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int sharp_ls060_remove(struct mipi_dsi_device *dsi)
+{
+	struct sharp_ls060 *ctx = mipi_dsi_get_drvdata(dsi);
+	int ret;
+
+	ret = mipi_dsi_detach(dsi);
+	if (ret < 0)
+		dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
+
+	drm_panel_remove(&ctx->panel);
+
+	return 0;
+}
+
+static const struct of_device_id sharp_ls060t1sx01_of_match[] = {
+	{ .compatible = "sharp,ls060t1sx01" },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, sharp_ls060t1sx01_of_match);
+
+static struct mipi_dsi_driver sharp_ls060_driver = {
+	.probe = sharp_ls060_probe,
+	.remove = sharp_ls060_remove,
+	.driver = {
+		.name = "panel-sharp-ls060t1sx01",
+		.of_match_table = sharp_ls060t1sx01_of_match,
+	},
+};
+module_mipi_dsi_driver(sharp_ls060_driver);
+
+MODULE_AUTHOR("Dmitry Baryshkov <dmitry.baryshkov@linaro.org>");
+MODULE_DESCRIPTION("DRM driver for Sharp LS060T1SX01 1080p video mode dsi panel");
+MODULE_LICENSE("GPL v2");

drivers/gpu/drm/panel/panel-simple.c

@@ -2370,6 +2370,38 @@ static const struct panel_desc logictechno_lt170410_2whc = {
 	.connector_type = DRM_MODE_CONNECTOR_LVDS,
 };
 
+static const struct drm_display_mode logictechno_lttd800480070_l2rt_mode = {
+	.clock = 33000,
+	.hdisplay = 800,
+	.hsync_start = 800 + 112,
+	.hsync_end = 800 + 112 + 3,
+	.htotal = 800 + 112 + 3 + 85,
+	.vdisplay = 480,
+	.vsync_start = 480 + 38,
+	.vsync_end = 480 + 38 + 3,
+	.vtotal = 480 + 38 + 3 + 29,
+	.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
+};
+
+static const struct panel_desc logictechno_lttd800480070_l2rt = {
+	.modes = &logictechno_lttd800480070_l2rt_mode,
+	.num_modes = 1,
+	.bpc = 8,
+	.size = {
+		.width = 154,
+		.height = 86,
+	},
+	.delay = {
+		.prepare = 45,
+		.enable = 100,
+		.disable = 100,
+		.unprepare = 45
+	},
+	.bus_format = MEDIA_BUS_FMT_RGB888_1X24,
+	.bus_flags = DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE,
+	.connector_type = DRM_MODE_CONNECTOR_DPI,
+};
+
 static const struct drm_display_mode logictechno_lttd800480070_l6wh_rt_mode = {
 	.clock = 33000,
 	.hdisplay = 800,
@@ -3750,6 +3782,9 @@ static const struct of_device_id platform_of_match[] = {
 	}, {
 		.compatible = "logictechno,lt170410-2whc",
 		.data = &logictechno_lt170410_2whc,
+	}, {
+		.compatible = "logictechno,lttd800480070-l2rt",
+		.data = &logictechno_lttd800480070_l2rt,
 	}, {
 		.compatible = "logictechno,lttd800480070-l6wh-rt",
 		.data = &logictechno_lttd800480070_l6wh_rt,

drivers/gpu/drm/panel/panel-sitronix-st7703.c

@@ -453,6 +453,10 @@ static int st7703_prepare(struct drm_panel *panel)
 	return ret;
 }
 
+static const u32 mantix_bus_formats[] = {
+	MEDIA_BUS_FMT_RGB888_1X24,
+};
+
 static int st7703_get_modes(struct drm_panel *panel,
 			    struct drm_connector *connector)
 {
@@ -474,6 +478,10 @@ static int st7703_get_modes(struct drm_panel *panel,
 	connector->display_info.height_mm = mode->height_mm;
 	drm_mode_probed_add(connector, mode);
 
+	drm_display_info_set_bus_formats(&connector->display_info,
+					 mantix_bus_formats,
+					 ARRAY_SIZE(mantix_bus_formats));
+
 	return 1;
 }
 

drivers/gpu/drm/scheduler/sched_main.c

@@ -699,30 +699,16 @@ int drm_sched_job_add_implicit_dependencies(struct drm_sched_job *job,
 					    struct drm_gem_object *obj,
 					    bool write)
 {
+	struct dma_resv_iter cursor;
+	struct dma_fence *fence;
 	int ret;
-	struct dma_fence **fences;
-	unsigned int i, fence_count;
-
-	if (!write) {
-		struct dma_fence *fence = dma_resv_get_excl_unlocked(obj->resv);
-
-		return drm_sched_job_add_dependency(job, fence);
-	}
-
-	ret = dma_resv_get_fences(obj->resv, NULL, &fence_count, &fences);
-	if (ret || !fence_count)
-		return ret;
 
-	for (i = 0; i < fence_count; i++) {
-		ret = drm_sched_job_add_dependency(job, fences[i]);
+	dma_resv_for_each_fence(&cursor, obj->resv, write, fence) {
+		ret = drm_sched_job_add_dependency(job, fence);
 		if (ret)
-			break;
+			return ret;
 	}
-
-	for (; i < fence_count; i++)
-		dma_fence_put(fences[i]);
-	kfree(fences);
-	return ret;
+	return 0;
 }
 EXPORT_SYMBOL(drm_sched_job_add_implicit_dependencies);
 

drivers/gpu/drm/ttm/ttm_bo.c

@@ -269,23 +269,15 @@ static int ttm_bo_individualize_resv(struct ttm_buffer_object *bo)
 static void ttm_bo_flush_all_fences(struct ttm_buffer_object *bo)
 {
 	struct dma_resv *resv = &bo->base._resv;
-	struct dma_resv_list *fobj;
+	struct dma_resv_iter cursor;
 	struct dma_fence *fence;
-	int i;
-
-	rcu_read_lock();
-	fobj = dma_resv_shared_list(resv);
-	fence = dma_resv_excl_fence(resv);
-	if (fence && !fence->ops->signaled)
-		dma_fence_enable_sw_signaling(fence);
-
-	for (i = 0; fobj && i < fobj->shared_count; ++i) {
-		fence = rcu_dereference(fobj->shared[i]);
 
+	dma_resv_iter_begin(&cursor, resv, true);
+	dma_resv_for_each_fence_unlocked(&cursor, fence) {
 		if (!fence->ops->signaled)
 			dma_fence_enable_sw_signaling(fence);
 	}
-	rcu_read_unlock();
+	dma_resv_iter_end(&cursor);
 }
 
 /**

drivers/gpu/drm/v3d/v3d_gem.c

@@ -487,8 +487,8 @@ v3d_job_init(struct v3d_dev *v3d, struct drm_file *file_priv,
 			for (i = 0; i < se->in_sync_count; i++) {
 				struct drm_v3d_sem in;
 
-				ret = copy_from_user(&in, handle++, sizeof(in));
-				if (ret) {
+				if (copy_from_user(&in, handle++, sizeof(in))) {
+					ret = -EFAULT;
 					DRM_DEBUG("Failed to copy wait dep handle.\n");
 					goto fail_deps;
 				}
@@ -609,8 +609,8 @@ v3d_get_multisync_post_deps(struct drm_file *file_priv,
 	for (i = 0; i < count; i++) {
 		struct drm_v3d_sem out;
 
-		ret = copy_from_user(&out, post_deps++, sizeof(out));
-		if (ret) {
+		if (copy_from_user(&out, post_deps++, sizeof(out))) {
+			ret = -EFAULT;
 			DRM_DEBUG("Failed to copy post dep handles\n");
 			goto fail;
 		}
@@ -646,9 +646,8 @@ v3d_get_multisync_submit_deps(struct drm_file *file_priv,
 	struct v3d_submit_ext *se = data;
 	int ret;
 
-	ret = copy_from_user(&multisync, ext, sizeof(multisync));
-	if (ret)
-		return ret;
+	if (copy_from_user(&multisync, ext, sizeof(multisync)))
+		return -EFAULT;
 
 	if (multisync.pad)
 		return -EINVAL;

drivers/gpu/drm/virtio/virtgpu_display.c

@@ -308,8 +308,10 @@ virtio_gpu_user_framebuffer_create(struct drm_device *dev,
 		return ERR_PTR(-EINVAL);
 
 	virtio_gpu_fb = kzalloc(sizeof(*virtio_gpu_fb), GFP_KERNEL);
-	if (virtio_gpu_fb == NULL)
+	if (virtio_gpu_fb == NULL) {
+		drm_gem_object_put(obj);
 		return ERR_PTR(-ENOMEM);
+	}
 
 	ret = virtio_gpu_framebuffer_init(dev, virtio_gpu_fb, mode_cmd, obj);
 	if (ret) {

drivers/video/fbdev/core/bitblit.c

@@ -43,21 +43,6 @@ static void update_attr(u8 *dst, u8 *src, int attribute,
 	}
 }
 
-static void bit_bmove(struct vc_data *vc, struct fb_info *info, int sy,
-		      int sx, int dy, int dx, int height, int width)
-{
-	struct fb_copyarea area;
-
-	area.sx = sx * vc->vc_font.width;
-	area.sy = sy * vc->vc_font.height;
-	area.dx = dx * vc->vc_font.width;
-	area.dy = dy * vc->vc_font.height;
-	area.height = height * vc->vc_font.height;
-	area.width = width * vc->vc_font.width;
-
-	info->fbops->fb_copyarea(info, &area);
-}
-
 static void bit_clear(struct vc_data *vc, struct fb_info *info, int sy,
 		      int sx, int height, int width)
 {
@@ -393,7 +378,6 @@ static int bit_update_start(struct fb_info *info)
 
 void fbcon_set_bitops(struct fbcon_ops *ops)
 {
-	ops->bmove = bit_bmove;
 	ops->clear = bit_clear;
 	ops->putcs = bit_putcs;
 	ops->clear_margins = bit_clear_margins;

drivers/video/fbdev/core/fbcon.h

@@ -29,7 +29,6 @@ struct fbcon_display {
     /* Filled in by the low-level console driver */
     const u_char *fontdata;
     int userfont;                   /* != 0 if fontdata kmalloc()ed */
-    u_short scrollmode;             /* Scroll Method */
     u_short inverse;                /* != 0 text black on white as default */
     short yscroll;                  /* Hardware scrolling */
     int vrows;                      /* number of virtual rows */
@@ -52,8 +51,6 @@ struct fbcon_display {
 };
 
 struct fbcon_ops {
-	void (*bmove)(struct vc_data *vc, struct fb_info *info, int sy,
-		      int sx, int dy, int dx, int height, int width);
 	void (*clear)(struct vc_data *vc, struct fb_info *info, int sy,
 		      int sx, int height, int width);
 	void (*putcs)(struct vc_data *vc, struct fb_info *info,
@@ -152,62 +149,6 @@ static inline int attr_col_ec(int shift, struct vc_data *vc,
 #define attr_bgcol_ec(bgshift, vc, info) attr_col_ec(bgshift, vc, info, 0)
 #define attr_fgcol_ec(fgshift, vc, info) attr_col_ec(fgshift, vc, info, 1)
 
-    /*
-     *  Scroll Method
-     */
-     
-/* There are several methods fbcon can use to move text around the screen:
- *
- *                     Operation   Pan    Wrap
- *---------------------------------------------
- * SCROLL_MOVE         copyarea    No     No
- * SCROLL_PAN_MOVE     copyarea    Yes    No
- * SCROLL_WRAP_MOVE    copyarea    No     Yes
- * SCROLL_REDRAW       imageblit   No     No
- * SCROLL_PAN_REDRAW   imageblit   Yes    No
- * SCROLL_WRAP_REDRAW  imageblit   No     Yes
- *
- * (SCROLL_WRAP_REDRAW is not implemented yet)
- *
- * In general, fbcon will choose the best scrolling
- * method based on the rule below:
- *
- * Pan/Wrap > accel imageblit > accel copyarea >
- * soft imageblit > (soft copyarea)
- *
- * Exception to the rule: Pan + accel copyarea is
- * preferred over Pan + accel imageblit.
- *
- * The above is typical for PCI/AGP cards. Unless
- * overridden, fbcon will never use soft copyarea.
- *
- * If you need to override the above rule, set the
- * appropriate flags in fb_info->flags.  For example,
- * to prefer copyarea over imageblit, set
- * FBINFO_READS_FAST.
- *
- * Other notes:
- * + use the hardware engine to move the text
- *    (hw-accelerated copyarea() and fillrect())
- * + use hardware-supported panning on a large virtual screen
- * + amifb can not only pan, but also wrap the display by N lines
- *    (i.e. visible line i = physical line (i+N) % yres).
- * + read what's already rendered on the screen and
- *     write it in a different place (this is cfb_copyarea())
- * + re-render the text to the screen
- *
- * Whether to use wrapping or panning can only be figured out at
- * runtime (when we know whether our font height is a multiple
- * of the pan/wrap step)
- *
- */
-
-#define SCROLL_MOVE	   0x001
-#define SCROLL_PAN_MOVE	   0x002
-#define SCROLL_WRAP_MOVE   0x003
-#define SCROLL_REDRAW	   0x004
-#define SCROLL_PAN_REDRAW  0x005
-
 #ifdef CONFIG_FB_TILEBLITTING
 extern void fbcon_set_tileops(struct vc_data *vc, struct fb_info *info);
 #endif

drivers/video/fbdev/core/fbcon_ccw.c

@@ -59,31 +59,12 @@ static void ccw_update_attr(u8 *dst, u8 *src, int attribute,
 	}
 }
 
-
-static void ccw_bmove(struct vc_data *vc, struct fb_info *info, int sy,
-		     int sx, int dy, int dx, int height, int width)
-{
-	struct fbcon_ops *ops = info->fbcon_par;
-	struct fb_copyarea area;
-	u32 vyres = GETVYRES(ops->p->scrollmode, info);
-
-	area.sx = sy * vc->vc_font.height;
-	area.sy = vyres - ((sx + width) * vc->vc_font.width);
-	area.dx = dy * vc->vc_font.height;
-	area.dy = vyres - ((dx + width) * vc->vc_font.width);
-	area.width = height * vc->vc_font.height;
-	area.height  = width * vc->vc_font.width;
-
-	info->fbops->fb_copyarea(info, &area);
-}
-
 static void ccw_clear(struct vc_data *vc, struct fb_info *info, int sy,
 		     int sx, int height, int width)
 {
-	struct fbcon_ops *ops = info->fbcon_par;
 	struct fb_fillrect region;
 	int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
-	u32 vyres = GETVYRES(ops->p->scrollmode, info);
+	u32 vyres = info->var.yres;
 
 	region.color = attr_bgcol_ec(bgshift,vc,info);
 	region.dx = sy * vc->vc_font.height;
@@ -140,7 +121,7 @@ static void ccw_putcs(struct vc_data *vc, struct fb_info *info,
 	u32 cnt, pitch, size;
 	u32 attribute = get_attribute(info, scr_readw(s));
 	u8 *dst, *buf = NULL;
-	u32 vyres = GETVYRES(ops->p->scrollmode, info);
+	u32 vyres = info->var.yres;
 
 	if (!ops->fontbuffer)
 		return;
@@ -229,7 +210,7 @@ static void ccw_cursor(struct vc_data *vc, struct fb_info *info, int mode,
 	int attribute, use_sw = vc->vc_cursor_type & CUR_SW;
 	int err = 1, dx, dy;
 	char *src;
-	u32 vyres = GETVYRES(ops->p->scrollmode, info);
+	u32 vyres = info->var.yres;
 
 	if (!ops->fontbuffer)
 		return;
@@ -387,7 +368,7 @@ static int ccw_update_start(struct fb_info *info)
 {
 	struct fbcon_ops *ops = info->fbcon_par;
 	u32 yoffset;
-	u32 vyres = GETVYRES(ops->p->scrollmode, info);
+	u32 vyres = info->var.yres;
 	int err;
 
 	yoffset = (vyres - info->var.yres) - ops->var.xoffset;
@@ -402,7 +383,6 @@ static int ccw_update_start(struct fb_info *info)
 
 void fbcon_rotate_ccw(struct fbcon_ops *ops)
 {
-	ops->bmove = ccw_bmove;
 	ops->clear = ccw_clear;
 	ops->putcs = ccw_putcs;
 	ops->clear_margins = ccw_clear_margins;

drivers/video/fbdev/core/fbcon_cw.c

@@ -44,31 +44,12 @@ static void cw_update_attr(u8 *dst, u8 *src, int attribute,
 	}
 }
 
-
-static void cw_bmove(struct vc_data *vc, struct fb_info *info, int sy,
-		     int sx, int dy, int dx, int height, int width)
-{
-	struct fbcon_ops *ops = info->fbcon_par;
-	struct fb_copyarea area;
-	u32 vxres = GETVXRES(ops->p->scrollmode, info);
-
-	area.sx = vxres - ((sy + height) * vc->vc_font.height);
-	area.sy = sx * vc->vc_font.width;
-	area.dx = vxres - ((dy + height) * vc->vc_font.height);
-	area.dy = dx * vc->vc_font.width;
-	area.width = height * vc->vc_font.height;
-	area.height  = width * vc->vc_font.width;
-
-	info->fbops->fb_copyarea(info, &area);
-}
-
 static void cw_clear(struct vc_data *vc, struct fb_info *info, int sy,
 		     int sx, int height, int width)
 {
-	struct fbcon_ops *ops = info->fbcon_par;
 	struct fb_fillrect region;
 	int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
-	u32 vxres = GETVXRES(ops->p->scrollmode, info);
+	u32 vxres = info->var.xres;
 
 	region.color = attr_bgcol_ec(bgshift,vc,info);
 	region.dx = vxres - ((sy + height) * vc->vc_font.height);
@@ -125,7 +106,7 @@ static void cw_putcs(struct vc_data *vc, struct fb_info *info,
 	u32 cnt, pitch, size;
 	u32 attribute = get_attribute(info, scr_readw(s));
 	u8 *dst, *buf = NULL;
-	u32 vxres = GETVXRES(ops->p->scrollmode, info);
+	u32 vxres = info->var.xres;
 
 	if (!ops->fontbuffer)
 		return;
@@ -212,7 +193,7 @@ static void cw_cursor(struct vc_data *vc, struct fb_info *info, int mode,
 	int attribute, use_sw = vc->vc_cursor_type & CUR_SW;
 	int err = 1, dx, dy;
 	char *src;
-	u32 vxres = GETVXRES(ops->p->scrollmode, info);
+	u32 vxres = info->var.xres;
 
 	if (!ops->fontbuffer)
 		return;
@@ -369,7 +350,7 @@ static void cw_cursor(struct vc_data *vc, struct fb_info *info, int mode,
 static int cw_update_start(struct fb_info *info)
 {
 	struct fbcon_ops *ops = info->fbcon_par;
-	u32 vxres = GETVXRES(ops->p->scrollmode, info);
+	u32 vxres = info->var.xres;
 	u32 xoffset;
 	int err;
 
@@ -385,7 +366,6 @@ static int cw_update_start(struct fb_info *info)
 
 void fbcon_rotate_cw(struct fbcon_ops *ops)
 {
-	ops->bmove = cw_bmove;
 	ops->clear = cw_clear;
 	ops->putcs = cw_putcs;
 	ops->clear_margins = cw_clear_margins;

drivers/video/fbdev/core/fbcon_rotate.h

@@ -11,15 +11,6 @@
 #ifndef _FBCON_ROTATE_H
 #define _FBCON_ROTATE_H
 
-#define GETVYRES(s,i) ({                           \
-        (s == SCROLL_REDRAW || s == SCROLL_MOVE) ? \
-        (i)->var.yres : (i)->var.yres_virtual; })
-
-#define GETVXRES(s,i) ({                           \
-        (s == SCROLL_REDRAW || s == SCROLL_MOVE || !(i)->fix.xpanstep) ? \
-        (i)->var.xres : (i)->var.xres_virtual; })
-
-
 static inline int pattern_test_bit(u32 x, u32 y, u32 pitch, const char *pat)
 {
 	u32 tmp = (y * pitch) + x, index = tmp / 8,  bit = tmp % 8;

drivers/video/fbdev/core/fbcon_ud.c

@@ -44,33 +44,13 @@ static void ud_update_attr(u8 *dst, u8 *src, int attribute,
 	}
 }
 
-
-static void ud_bmove(struct vc_data *vc, struct fb_info *info, int sy,
-		     int sx, int dy, int dx, int height, int width)
-{
-	struct fbcon_ops *ops = info->fbcon_par;
-	struct fb_copyarea area;
-	u32 vyres = GETVYRES(ops->p->scrollmode, info);
-	u32 vxres = GETVXRES(ops->p->scrollmode, info);
-
-	area.sy = vyres - ((sy + height) * vc->vc_font.height);
-	area.sx = vxres - ((sx + width) * vc->vc_font.width);
-	area.dy = vyres - ((dy + height) * vc->vc_font.height);
-	area.dx = vxres - ((dx + width) * vc->vc_font.width);
-	area.height = height * vc->vc_font.height;
-	area.width  = width * vc->vc_font.width;
-
-	info->fbops->fb_copyarea(info, &area);
-}
-
 static void ud_clear(struct vc_data *vc, struct fb_info *info, int sy,
 		     int sx, int height, int width)
 {
-	struct fbcon_ops *ops = info->fbcon_par;
 	struct fb_fillrect region;
 	int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
-	u32 vyres = GETVYRES(ops->p->scrollmode, info);
-	u32 vxres = GETVXRES(ops->p->scrollmode, info);
+	u32 vyres = info->var.yres;
+	u32 vxres = info->var.xres;
 
 	region.color = attr_bgcol_ec(bgshift,vc,info);
 	region.dy = vyres - ((sy + height) * vc->vc_font.height);
@@ -162,8 +142,8 @@ static void ud_putcs(struct vc_data *vc, struct fb_info *info,
 	u32 mod = vc->vc_font.width % 8, cnt, pitch, size;
 	u32 attribute = get_attribute(info, scr_readw(s));
 	u8 *dst, *buf = NULL;
-	u32 vyres = GETVYRES(ops->p->scrollmode, info);
-	u32 vxres = GETVXRES(ops->p->scrollmode, info);
+	u32 vyres = info->var.yres;
+	u32 vxres = info->var.xres;
 
 	if (!ops->fontbuffer)
 		return;
@@ -259,8 +239,8 @@ static void ud_cursor(struct vc_data *vc, struct fb_info *info, int mode,
 	int attribute, use_sw = vc->vc_cursor_type & CUR_SW;
 	int err = 1, dx, dy;
 	char *src;
-	u32 vyres = GETVYRES(ops->p->scrollmode, info);
-	u32 vxres = GETVXRES(ops->p->scrollmode, info);
+	u32 vyres = info->var.yres;
+	u32 vxres = info->var.xres;
 
 	if (!ops->fontbuffer)
 		return;
@@ -410,8 +390,8 @@ static int ud_update_start(struct fb_info *info)
 {
 	struct fbcon_ops *ops = info->fbcon_par;
 	int xoffset, yoffset;
-	u32 vyres = GETVYRES(ops->p->scrollmode, info);
-	u32 vxres = GETVXRES(ops->p->scrollmode, info);
+	u32 vyres = info->var.yres;
+	u32 vxres = info->var.xres;
 	int err;
 
 	xoffset = vxres - info->var.xres - ops->var.xoffset;
@@ -429,7 +409,6 @@ static int ud_update_start(struct fb_info *info)
 
 void fbcon_rotate_ud(struct fbcon_ops *ops)
 {
-	ops->bmove = ud_bmove;
 	ops->clear = ud_clear;
 	ops->putcs = ud_putcs;
 	ops->clear_margins = ud_clear_margins;

drivers/video/fbdev/core/fbmem.c

@@ -1702,8 +1702,11 @@ static void do_unregister_framebuffer(struct fb_info *fb_info)
 {
 	unlink_framebuffer(fb_info);
 	if (fb_info->pixmap.addr &&
-	    (fb_info->pixmap.flags & FB_PIXMAP_DEFAULT))
+	    (fb_info->pixmap.flags & FB_PIXMAP_DEFAULT)) {
 		kfree(fb_info->pixmap.addr);
+		fb_info->pixmap.addr = NULL;
+	}
+
 	fb_destroy_modelist(&fb_info->modelist);
 	registered_fb[fb_info->node] = NULL;
 	num_registered_fb--;

drivers/video/fbdev/core/tileblit.c

@@ -16,21 +16,6 @@
 #include <asm/types.h>
 #include "fbcon.h"
 
-static void tile_bmove(struct vc_data *vc, struct fb_info *info, int sy,
-		       int sx, int dy, int dx, int height, int width)
-{
-	struct fb_tilearea area;
-
-	area.sx = sx;
-	area.sy = sy;
-	area.dx = dx;
-	area.dy = dy;
-	area.height = height;
-	area.width = width;
-
-	info->tileops->fb_tilecopy(info, &area);
-}
-
 static void tile_clear(struct vc_data *vc, struct fb_info *info, int sy,
 		       int sx, int height, int width)
 {
@@ -133,7 +118,6 @@ void fbcon_set_tileops(struct vc_data *vc, struct fb_info *info)
 	struct fb_tilemap map;
 	struct fbcon_ops *ops = info->fbcon_par;
 
-	ops->bmove = tile_bmove;
 	ops->clear = tile_clear;
 	ops->putcs = tile_putcs;
 	ops->clear_margins = tile_clear_margins;

drivers/video/fbdev/skeletonfb.c

@@ -505,15 +505,15 @@ void xxxfb_fillrect(struct fb_info *p, const struct fb_fillrect *region)
 }
 
 /**
- *      xxxfb_copyarea - REQUIRED function. Can use generic routines if
- *                       non acclerated hardware and packed pixel based.
+ *      xxxfb_copyarea - OBSOLETE function.
  *                       Copies one area of the screen to another area.
+ *                       Will be deleted in a future version
  *
  *      @info: frame buffer structure that represents a single frame buffer
  *      @area: Structure providing the data to copy the framebuffer contents
  *	       from one region to another.
  *
- *      This drawing operation copies a rectangular area from one area of the
+ *      This drawing operation copied a rectangular area from one area of the
  *	screen to another area.
  */
 void xxxfb_copyarea(struct fb_info *p, const struct fb_copyarea *area) 
@@ -645,9 +645,9 @@ static const struct fb_ops xxxfb_ops = {
 	.fb_setcolreg	= xxxfb_setcolreg,
 	.fb_blank	= xxxfb_blank,
 	.fb_pan_display	= xxxfb_pan_display,
-	.fb_fillrect	= xxxfb_fillrect, 	/* Needed !!! */
-	.fb_copyarea	= xxxfb_copyarea,	/* Needed !!! */
-	.fb_imageblit	= xxxfb_imageblit,	/* Needed !!! */
+	.fb_fillrect	= xxxfb_fillrect,	/* Needed !!!   */
+	.fb_copyarea	= xxxfb_copyarea,	/* Obsolete     */
+	.fb_imageblit	= xxxfb_imageblit,	/* Needed !!!   */
 	.fb_cursor	= xxxfb_cursor,		/* Optional !!! */
 	.fb_sync	= xxxfb_sync,
 	.fb_ioctl	= xxxfb_ioctl,

include/drm/drm_modeset_lock.h

@@ -24,6 +24,8 @@
 #ifndef DRM_MODESET_LOCK_H_
 #define DRM_MODESET_LOCK_H_
 
+#include <linux/types.h> /* stackdepot.h is not self-contained */
+#include <linux/stackdepot.h>
 #include <linux/ww_mutex.h>
 
 struct drm_modeset_lock;
@@ -51,6 +53,12 @@ struct drm_modeset_acquire_ctx {
 	 */
 	struct drm_modeset_lock *contended;
 
+	/*
+	 * Stack depot for debugging when a contended lock was not backed off
+	 * from.
+	 */
+	depot_stack_handle_t stack_depot;
+
 	/*
 	 * list of held locks (drm_modeset_lock)
 	 */

include/drm/ttm/ttm_bo_api.h

@@ -351,9 +351,10 @@ bool ttm_bo_eviction_valuable(struct ttm_buffer_object *bo,
  * @bo: Pointer to a ttm_buffer_object to be initialized.
  * @size: Requested size of buffer object.
  * @type: Requested type of buffer object.
- * @flags: Initial placement flags.
+ * @placement: Initial placement for buffer object.
  * @page_alignment: Data alignment in pages.
  * @ctx: TTM operation context for memory allocation.
+ * @sg: Scatter-gather table.
  * @resv: Pointer to a dma_resv, or NULL to let ttm allocate one.
  * @destroy: Destroy function. Use NULL for kfree().
  *
@@ -394,7 +395,7 @@ int ttm_bo_init_reserved(struct ttm_device *bdev,
  * @bo: Pointer to a ttm_buffer_object to be initialized.
  * @size: Requested size of buffer object.
  * @type: Requested type of buffer object.
- * @flags: Initial placement flags.
+ * @placement: Initial placement for buffer object.
  * @page_alignment: Data alignment in pages.
  * @interruptible: If needing to sleep to wait for GPU resources,
  * sleep interruptible.
@@ -402,6 +403,7 @@ int ttm_bo_init_reserved(struct ttm_device *bdev,
  * holds a pointer to a persistent shmem object. Typically, this would
  * point to the shmem object backing a GEM object if TTM is used to back a
  * GEM user interface.
+ * @sg: Scatter-gather table.
  * @resv: Pointer to a dma_resv, or NULL to let ttm allocate one.
  * @destroy: Destroy function. Use NULL for kfree().
  *

include/linux/dma-resv.h

@@ -170,15 +170,20 @@ struct dma_resv_iter {
 	/** @index: index into the shared fences */
 	unsigned int index;
 
-	/** @fences: the shared fences */
+	/** @fences: the shared fences; private, *MUST* not dereference  */
 	struct dma_resv_list *fences;
 
+	/** @shared_count: number of shared fences */
+	unsigned int shared_count;
+
 	/** @is_restarted: true if this is the first returned fence */
 	bool is_restarted;
 };
 
 struct dma_fence *dma_resv_iter_first_unlocked(struct dma_resv_iter *cursor);
 struct dma_fence *dma_resv_iter_next_unlocked(struct dma_resv_iter *cursor);
+struct dma_fence *dma_resv_iter_first(struct dma_resv_iter *cursor);
+struct dma_fence *dma_resv_iter_next(struct dma_resv_iter *cursor);
 
 /**
  * dma_resv_iter_begin - initialize a dma_resv_iter object
@@ -244,6 +249,24 @@ static inline bool dma_resv_iter_is_restarted(struct dma_resv_iter *cursor)
 	for (fence = dma_resv_iter_first_unlocked(cursor);		\
 	     fence; fence = dma_resv_iter_next_unlocked(cursor))
 
+/**
+ * dma_resv_for_each_fence - fence iterator
+ * @cursor: a struct dma_resv_iter pointer
+ * @obj: a dma_resv object pointer
+ * @all_fences: true if all fences should be returned
+ * @fence: the current fence
+ *
+ * Iterate over the fences in a struct dma_resv object while holding the
+ * &dma_resv.lock. @all_fences controls if the shared fences are returned as
+ * well. The cursor initialisation is part of the iterator and the fence stays
+ * valid as long as the lock is held and so no extra reference to the fence is
+ * taken.
+ */
+#define dma_resv_for_each_fence(cursor, obj, all_fences, fence)	\
+	for (dma_resv_iter_begin(cursor, obj, all_fences),	\
+	     fence = dma_resv_iter_first(cursor); fence;	\
+	     fence = dma_resv_iter_next(cursor))
+
 #define dma_resv_held(obj) lockdep_is_held(&(obj)->lock.base)
 #define dma_resv_assert_held(obj) lockdep_assert_held(&(obj)->lock.base)
 

include/linux/fb.h

@@ -262,7 +262,7 @@ struct fb_ops {
 
 	/* Draws a rectangle */
 	void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect);
-	/* Copy data from area to another */
+	/* Copy data from area to another. Obsolete. */
 	void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region);
 	/* Draws a image to the display */
 	void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image);