Merge tag 'drm-misc-next-2025-05-08' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next

drm-misc-next for v6.16-rc1:

Cross-subsystem Changes:
- Change vsprintf %p4cn to %p4chR, remove %p4cn.

Core Changes:
- Documentation updates (fb rendering, actual_brightness)

Driver Changes:
- Small fixes to appletbdrm, panthor, st7571-i2c, rockchip, renesas,
  panic handler, gpusvm, vkms, panel timings.
- Add AUO B140QAN08.H, BOE NE140WUM-N6S, CSW MNE007QS3-8, BOE TD4320 panels.
- Convert rk3066_hdmi to bridge driver.
- Improve HPD on anx7625.
- Speed up loading tegra firmware, and other small fixes to tegra & host1x.

Signed-off-by: Dave Airlie <[email protected]>
From: Maarten Lankhorst <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: airlied

Documentation/ABI/stable/sysfs-class-backlight

@@ -26,7 +26,12 @@ Date:		March 2006
 KernelVersion:	2.6.17
 Contact:	Richard Purdie <[email protected]>
 Description:
-		Show the actual brightness by querying the hardware.
+		Show the actual brightness by querying the hardware. Due
+		to implementation differences in hardware this may not
+		match the value in 'brightness'. For example some hardware
+		may treat blanking differently or have custom power saving
+		features. Userspace should generally use the values in
+		'brightness' to make decisions.
 Users:		HAL
 
 What:		/sys/class/backlight/<backlight>/max_brightness

Documentation/core-api/printk-formats.rst

@@ -652,31 +652,31 @@ Generic FourCC code
 -------------------
 
 ::
-	%p4c[hnlb]	gP00 (0x67503030)
+	%p4c[h[R]lb]	gP00 (0x67503030)
 
 Print a generic FourCC code, as both ASCII characters and its numerical
 value as hexadecimal.
 
 The generic FourCC code is always printed in the big-endian format,
 the most significant byte first. This is the opposite of V4L/DRM FourCCs.
 
-The additional ``h``, ``n``, ``l``, and ``b`` specifiers define what
+The additional ``h``, ``hR``, ``l``, and ``b`` specifiers define what
 endianness is used to load the stored bytes. The data might be interpreted
-using the host byte order, network byte order, little-endian, or big-endian.
+using the host, reversed host byte order, little-endian, or big-endian.
 
 Passed by reference.
 
 Examples for a little-endian machine, given &(u32)0x67503030::
 
 	%p4ch	gP00 (0x67503030)
-	%p4cn	00Pg (0x30305067)
+	%p4chR	00Pg (0x30305067)
 	%p4cl	gP00 (0x67503030)
 	%p4cb	00Pg (0x30305067)
 
 Examples for a big-endian machine, given &(u32)0x67503030::
 
 	%p4ch	gP00 (0x67503030)
-	%p4cn	00Pg (0x30305067)
+	%p4chR	00Pg (0x30305067)
 	%p4cl	00Pg (0x30305067)
 	%p4cb	gP00 (0x67503030)
 

Documentation/devicetree/bindings/display/panel/boe,td4320.yaml

@@ -0,0 +1,65 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/boe,td4320.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: BOE TD4320 MIPI-DSI panels
+
+maintainers:
+  - Barnabas Czeman <[email protected]>
+
+description:
+  BOE TD4320 6.3" 1080x2340 panel found in Xiaomi Redmi Note 7 smartphone.
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    items:
+      - const: boe,td4320
+
+  reg:
+    maxItems: 1
+
+  iovcc-supply:
+    description: I/O voltage rail
+
+  vsn-supply:
+    description: Negative source voltage rail
+
+  vsp-supply:
+    description: Positive source voltage rail
+
+required:
+  - compatible
+  - reg
+  - reset-gpios
+  - port
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    dsi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        panel@0 {
+            compatible = "boe,td4320";
+            reg = <0>;
+            backlight = <&backlight>;
+            reset-gpios = <&tlmm 45 GPIO_ACTIVE_LOW>;
+
+            port {
+                panel_in: endpoint {
+                    remote-endpoint = <&dsi_out>;
+                };
+            };
+        };
+    };
+
+...

Documentation/devicetree/bindings/display/panel/leadtek,ltk050h3146w.yaml

@@ -23,6 +23,7 @@ properties:
     maxItems: 1
 
   backlight: true
+  port: true
   reset-gpios: true
   iovcc-supply:
     description: regulator that supplies the iovcc voltage

Documentation/devicetree/bindings/display/panel/leadtek,ltk500hd1829.yaml

@@ -22,6 +22,7 @@ properties:
     maxItems: 1
 
   backlight: true
+  port: true
   reset-gpios: true
   iovcc-supply:
     description: regulator that supplies the iovcc voltage

Documentation/devicetree/bindings/display/rockchip/rockchip,inno-hdmi.yaml

@@ -23,13 +23,11 @@ properties:
     maxItems: 1
 
   clocks:
-    minItems: 1
     items:
       - description: The HDMI controller main clock
       - description: The HDMI PHY reference clock
 
   clock-names:
-    minItems: 1
     items:
       - const: pclk
       - const: ref
@@ -58,6 +56,12 @@ properties:
       - port@0
       - port@1
 
+  rockchip,grf:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Phandle to GRF used for control the polarity of hsync/vsync of rk3036
+      HDMI.
+
 required:
   - compatible
   - reg
@@ -77,6 +81,8 @@ allOf:
             const: rockchip,rk3036-inno-hdmi
 
     then:
+      required:
+        - rockchip,grf
       properties:
         power-domains: false
 
@@ -87,11 +93,6 @@ allOf:
             const: rockchip,rk3128-inno-hdmi
 
     then:
-      properties:
-        clocks:
-          minItems: 2
-        clock-names:
-          minItems: 2
       required:
         - power-domains
 
@@ -106,10 +107,11 @@ examples:
       compatible = "rockchip,rk3036-inno-hdmi";
       reg = <0x20034000 0x4000>;
       interrupts = <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
-      clocks = <&cru  PCLK_HDMI>;
-      clock-names = "pclk";
+      clocks = <&cru PCLK_HDMI>, <&cru SCLK_LCDC>;
+      clock-names = "pclk", "ref";
       pinctrl-names = "default";
       pinctrl-0 = <&hdmi_ctl>;
+      rockchip,grf = <&grf>;
       #sound-dai-cells = <0>;
 
       ports {

drivers/gpu/drm/bridge/analogix/anx7625.c

@@ -1257,10 +1257,10 @@ static void anx7625_power_on(struct anx7625_data *ctx)
 	usleep_range(11000, 12000);
 
 	/* Power on pin enable */
-	gpiod_set_value(ctx->pdata.gpio_p_on, 1);
+	gpiod_set_value_cansleep(ctx->pdata.gpio_p_on, 1);
 	usleep_range(10000, 11000);
 	/* Power reset pin enable */
-	gpiod_set_value(ctx->pdata.gpio_reset, 1);
+	gpiod_set_value_cansleep(ctx->pdata.gpio_reset, 1);
 	usleep_range(10000, 11000);
 
 	DRM_DEV_DEBUG_DRIVER(dev, "power on !\n");
@@ -1280,9 +1280,9 @@ static void anx7625_power_standby(struct anx7625_data *ctx)
 		return;
 	}
 
-	gpiod_set_value(ctx->pdata.gpio_reset, 0);
+	gpiod_set_value_cansleep(ctx->pdata.gpio_reset, 0);
 	usleep_range(1000, 1100);
-	gpiod_set_value(ctx->pdata.gpio_p_on, 0);
+	gpiod_set_value_cansleep(ctx->pdata.gpio_p_on, 0);
 	usleep_range(1000, 1100);
 
 	ret = regulator_bulk_disable(ARRAY_SIZE(ctx->pdata.supplies),
@@ -1814,9 +1814,6 @@ static enum drm_connector_status anx7625_sink_detect(struct anx7625_data *ctx)
 
 	DRM_DEV_DEBUG_DRIVER(dev, "sink detect\n");
 
-	if (ctx->pdata.panel_bridge)
-		return connector_status_connected;
-
 	return ctx->hpd_status ? connector_status_connected :
 				     connector_status_disconnected;
 }
@@ -2475,6 +2472,22 @@ static const struct drm_edid *anx7625_bridge_edid_read(struct drm_bridge *bridge
 	return anx7625_edid_read(ctx);
 }
 
+static void anx7625_bridge_hpd_enable(struct drm_bridge *bridge)
+{
+	struct anx7625_data *ctx = bridge_to_anx7625(bridge);
+	struct device *dev = ctx->dev;
+
+	pm_runtime_get_sync(dev);
+}
+
+static void anx7625_bridge_hpd_disable(struct drm_bridge *bridge)
+{
+	struct anx7625_data *ctx = bridge_to_anx7625(bridge);
+	struct device *dev = ctx->dev;
+
+	pm_runtime_put_sync(dev);
+}
+
 static const struct drm_bridge_funcs anx7625_bridge_funcs = {
 	.attach = anx7625_bridge_attach,
 	.detach = anx7625_bridge_detach,
@@ -2488,6 +2501,8 @@ static const struct drm_bridge_funcs anx7625_bridge_funcs = {
 	.atomic_reset = drm_atomic_helper_bridge_reset,
 	.detect = anx7625_bridge_detect,
 	.edid_read = anx7625_bridge_edid_read,
+	.hpd_enable = anx7625_bridge_hpd_enable,
+	.hpd_disable = anx7625_bridge_hpd_disable,
 };
 
 static int anx7625_register_i2c_dummy_clients(struct anx7625_data *ctx,
@@ -2585,9 +2600,8 @@ static int anx7625_link_bridge(struct drm_dp_aux *aux)
 	platform->bridge.of_node = dev->of_node;
 	if (!anx7625_of_panel_on_aux_bus(dev))
 		platform->bridge.ops |= DRM_BRIDGE_OP_EDID;
-	if (!platform->pdata.panel_bridge)
-		platform->bridge.ops |= DRM_BRIDGE_OP_HPD |
-					DRM_BRIDGE_OP_DETECT;
+	if (!platform->pdata.panel_bridge || !anx7625_of_panel_on_aux_bus(dev))
+		platform->bridge.ops |= DRM_BRIDGE_OP_HPD | DRM_BRIDGE_OP_DETECT;
 	platform->bridge.type = platform->pdata.panel_bridge ?
 				    DRM_MODE_CONNECTOR_eDP :
 				    DRM_MODE_CONNECTOR_DisplayPort;

drivers/gpu/drm/drm_blend.c

@@ -75,6 +75,12 @@
  * 	the currently visible vertical area of the &drm_crtc.
  * FB_ID:
  * 	Mode object ID of the &drm_framebuffer this plane should scan out.
+ *
+ *	When a KMS client is performing front-buffer rendering, it should set
+ *	FB_ID to the same front-buffer FB on each atomic commit. This implies
+ *	to the driver that it needs to re-read the same FB again. Otherwise
+ *	drivers which do not employ continuously repeated scanout cycles might
+ *	not update the screen.
  * CRTC_ID:
  * 	Mode object ID of the &drm_crtc this plane should be connected to.
  *

drivers/gpu/drm/drm_gpusvm.c

@@ -1330,7 +1330,6 @@ int drm_gpusvm_range_get_pages(struct drm_gpusvm *gpusvm,
 	unsigned long num_dma_mapped;
 	unsigned int order = 0;
 	unsigned long *pfns;
-	struct page **pages;
 	int err = 0;
 	struct dev_pagemap *pagemap;
 	struct drm_pagemap *dpagemap;
@@ -1369,7 +1368,6 @@ int drm_gpusvm_range_get_pages(struct drm_gpusvm *gpusvm,
 	if (err)
 		goto err_free;
 
-	pages = (struct page **)pfns;
 map_pages:
 	/*
 	 * Perform all dma mappings under the notifier lock to not
@@ -1444,8 +1442,6 @@ int drm_gpusvm_range_get_pages(struct drm_gpusvm *gpusvm,
 				err = -EFAULT;
 				goto err_unmap;
 			}
-
-			pages[i] = page;
 		} else {
 			dma_addr_t addr;