Merge tag 'drm-misc-next-2021-06-09' of git://anongit.freedesktop.org…

…/drm/drm-misc into drm-next drm-misc-next for 5.14: UAPI Changes: * drm/panfrost: Export AFBC_FEATURES register to userspace Cross-subsystem Changes: * dma-buf: Fix debug printing; Rename dma_resv_*() functions + changes in callers; Cleanups Core Changes: * Add prefetching memcpy for WC * Avoid circular dependency on CONFIG_FB * Cleanups * Documentation fixes throughout DRM * ttm: Make struct ttm_resource the base of all managers + changes in all users of TTM; Add a generic memcpy for page-based iomem; Remove use of VM_MIXEDMAP; Cleanups Driver Changes: * drm/bridge: Add TI SN65DSI83 and SN65DSI84 + DT bindings * drm/hyperv: Add DRM driver for HyperV graphics output * drm/msm: Fix module dependencies * drm/panel: KD53T133: Support rotation * drm/pl111: Fix module dependencies * drm/qxl: Fixes * drm/stm: Cleanups * drm/sun4i: Be explicit about format modifiers * drm/vc4: Use struct gpio_desc; Cleanups * drm/vgem: Cleanups * drm/vmwgfx: Use ttm_bo_move_null() if there's nothing to copy * fbdev/mach64: Cleanups * fbdev/mb862xx: Use DEVICE_ATTR_RO Signed-off-by: Dave Airlie <airlied@redhat.com> From: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/YMBw3DF2b9udByfT@linux-uq9g
mariux64 · Jun 10, 2021 · 09b020b · 09b020b
2 parents 5745d64 + 5b7a2c9
commit 09b020b
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diff --git a/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi83.yaml b/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi83.yaml
@@ -0,0 +1,159 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/bridge/ti,sn65dsi83.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SN65DSI83 and SN65DSI84 DSI to LVDS bridge chip
+
+maintainers:
+  - Marek Vasut <marex@denx.de>
+
+description: |
+  Texas Instruments SN65DSI83 1x Single-link MIPI DSI
+  to 1x Single-link LVDS
+  https://www.ti.com/lit/gpn/sn65dsi83
+  Texas Instruments SN65DSI84 1x Single-link MIPI DSI
+  to 1x Dual-link or 2x Single-link LVDS
+  https://www.ti.com/lit/gpn/sn65dsi84
+
+properties:
+  compatible:
+    enum:
+      - ti,sn65dsi83
+      - ti,sn65dsi84
+
+  reg:
+    enum:
+      - 0x2c
+      - 0x2d
+
+  enable-gpios:
+    maxItems: 1
+    description: GPIO specifier for bridge_en pin (active high).
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Video port for MIPI DSI Channel-A input
+
+        properties:
+          endpoint:
+            $ref: /schemas/media/video-interfaces.yaml#
+            unevaluatedProperties: false
+
+            properties:
+              data-lanes:
+                description: array of physical DSI data lane indexes.
+                minItems: 1
+                maxItems: 4
+                items:
+                  - const: 1
+                  - const: 2
+                  - const: 3
+                  - const: 4
+
+      port@1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Video port for MIPI DSI Channel-B input
+
+        properties:
+          endpoint:
+            $ref: /schemas/media/video-interfaces.yaml#
+            unevaluatedProperties: false
+
+            properties:
+              data-lanes:
+                description: array of physical DSI data lane indexes.
+                minItems: 1
+                maxItems: 4
+                items:
+                  - const: 1
+                  - const: 2
+                  - const: 3
+                  - const: 4
+
+      port@2:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Video port for LVDS Channel-A output (panel or bridge).
+
+      port@3:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Video port for LVDS Channel-B output (panel or bridge).
+
+    required:
+      - port@0
+      - port@2
+
+required:
+  - compatible
+  - reg
+  - enable-gpios
+  - ports
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: ti,sn65dsi83
+    then:
+      properties:
+        ports:
+          properties:
+            port@1: false
+            port@3: false
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: ti,sn65dsi84
+    then:
+      properties:
+        ports:
+          properties:
+            port@1: false
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        bridge@2d {
+            compatible = "ti,sn65dsi83";
+            reg = <0x2d>;
+
+            enable-gpios = <&gpio2 1 GPIO_ACTIVE_HIGH>;
+
+            ports {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                port@0 {
+                    reg = <0>;
+
+                    endpoint {
+                        remote-endpoint = <&dsi0_out>;
+                        data-lanes = <1 2 3 4>;
+                    };
+                };
+
+                port@2 {
+                    reg = <2>;
+
+                    endpoint {
+                        remote-endpoint = <&panel_in_lvds>;
+                    };
+                };
+            };
+        };
+    };
diff --git a/Documentation/driver-api/dma-buf.rst b/Documentation/driver-api/dma-buf.rst
@@ -178,6 +178,15 @@ DMA Fence Array
 .. kernel-doc:: include/linux/dma-fence-array.h
    :internal:
 
+DMA Fence Chain
+~~~~~~~~~~~~~~~
+
+.. kernel-doc:: drivers/dma-buf/dma-fence-chain.c
+   :export:
+
+.. kernel-doc:: include/linux/dma-fence-chain.h
+   :internal:
+
 DMA Fence uABI/Sync File
 ~~~~~~~~~~~~~~~~~~~~~~~~
 

diff --git a/Documentation/gpu/drm-mm.rst b/Documentation/gpu/drm-mm.rst
@@ -469,8 +469,8 @@ DRM MM Range Allocator Function References
 .. kernel-doc:: drivers/gpu/drm/drm_mm.c
    :export:
 
-DRM Cache Handling
-==================
+DRM Cache Handling and Fast WC memcpy()
+=======================================
 
 .. kernel-doc:: drivers/gpu/drm/drm_cache.c
    :export:

diff --git a/MAINTAINERS b/MAINTAINERS
@@ -6084,6 +6084,14 @@ T:	git git://anongit.freedesktop.org/drm/drm-misc
 F:	Documentation/devicetree/bindings/display/hisilicon/
 F:	drivers/gpu/drm/hisilicon/
 
+DRM DRIVER FOR HYPERV SYNTHETIC VIDEO DEVICE
+M:	Deepak Rawat <drawat.floss@gmail.com>
+L:	linux-hyperv@vger.kernel.org
+L:	dri-devel@lists.freedesktop.org
+S:	Maintained
+T:	git git://anongit.freedesktop.org/drm/drm-misc
+F:	drivers/gpu/drm/hyperv
+
 DRM DRIVERS FOR LIMA
 M:	Qiang Yu <yuq825@gmail.com>
 L:	dri-devel@lists.freedesktop.org

diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
@@ -234,7 +234,7 @@ static __poll_t dma_buf_poll(struct file *file, poll_table *poll)
 		shared_count = fobj->shared_count;
 	else
 		shared_count = 0;
-	fence_excl = rcu_dereference(resv->fence_excl);
+	fence_excl = dma_resv_excl_fence(resv);
 	if (read_seqcount_retry(&resv->seq, seq)) {
 		rcu_read_unlock();
 		goto retry;
@@ -1147,8 +1147,7 @@ static int __dma_buf_begin_cpu_access(struct dma_buf *dmabuf,
 	long ret;
 
 	/* Wait on any implicit rendering fences */
-	ret = dma_resv_wait_timeout_rcu(resv, write, true,
-						  MAX_SCHEDULE_TIMEOUT);
+	ret = dma_resv_wait_timeout(resv, write, true, MAX_SCHEDULE_TIMEOUT);
 	if (ret < 0)
 		return ret;
 
@@ -1349,15 +1348,14 @@ EXPORT_SYMBOL_GPL(dma_buf_vunmap);
 #ifdef CONFIG_DEBUG_FS
 static int dma_buf_debug_show(struct seq_file *s, void *unused)
 {
-	int ret;
 	struct dma_buf *buf_obj;
 	struct dma_buf_attachment *attach_obj;
 	struct dma_resv *robj;
 	struct dma_resv_list *fobj;
 	struct dma_fence *fence;
-	unsigned seq;
 	int count = 0, attach_count, shared_count, i;
 	size_t size = 0;
+	int ret;
 
 	ret = mutex_lock_interruptible(&db_list.lock);
 
@@ -1383,33 +1381,24 @@ static int dma_buf_debug_show(struct seq_file *s, void *unused)
 				buf_obj->name ?: "");
 
 		robj = buf_obj->resv;
-		while (true) {
-			seq = read_seqcount_begin(&robj->seq);
-			rcu_read_lock();
-			fobj = rcu_dereference(robj->fence);
-			shared_count = fobj ? fobj->shared_count : 0;
-			fence = rcu_dereference(robj->fence_excl);
-			if (!read_seqcount_retry(&robj->seq, seq))
-				break;
-			rcu_read_unlock();
-		}
-
+		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(fobj->shared[i]);
-			if (!dma_fence_get_rcu(fence))
-				continue;
+			fence = rcu_dereference_protected(fobj->shared[i],
+							  dma_resv_held(robj));
 			seq_printf(s, "\tShared fence: %s %s %ssignalled\n",
 				   fence->ops->get_driver_name(fence),
 				   fence->ops->get_timeline_name(fence),
 				   dma_fence_is_signaled(fence) ? "" : "un");
-			dma_fence_put(fence);
 		}
-		rcu_read_unlock();
 
 		seq_puts(s, "\tAttached Devices:\n");
 		attach_count = 0;