drm-misc-next for 5.15:

UAPI Changes:
 
 Cross-subsystem Changes:
 
 Core Changes:
 
 Driver Changes:
   - Conversions to dev_err_probe() helper
   - rockchip: Various build improvements, Use
     DRM_BRIDGE_ATTACH_NO_CONNECTOR for LVDS and RGB
   - panel: New panel-edp driver
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Merge tag 'drm-misc-next-2021-09-23' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 5.15:

UAPI Changes:

Cross-subsystem Changes:

Core Changes:

Driver Changes:
  - Conversions to dev_err_probe() helper
  - rockchip: Various build improvements, Use
    DRM_BRIDGE_ATTACH_NO_CONNECTOR for LVDS and RGB
  - panel: New panel-edp driver

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210923074522.zaja7mzxeimxf6g3@gilmour

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

@@ -0,0 +1,188 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/panel-edp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Probeable (via DP AUX / EDID) eDP Panels with simple poweron sequences
+
+maintainers:
+  - Douglas Anderson <dianders@chromium.org>
+
+description: |
+  This binding file can be used to indicate that an eDP panel is connected
+  to a Embedded DisplayPort AUX bus (see display/dp-aux-bus.yaml) without
+  actually specifying exactly what panel is connected. This is useful for
+  the case that more than one different panel could be connected to the
+  board, either for second-sourcing purposes or to support multiple SKUs
+  with different LCDs that hook up to a common board.
+
+  As per above, a requirement for using this binding is that the panel is
+  represented under the DP AUX bus. This means that we can use any
+  information provided by the DP AUX bus (including the EDID) to identify
+  the panel. We can use this to identify display size, resolution, and
+  timings among other things.
+
+  One piece of information about eDP panels that is typically _not_
+  provided anywhere on the DP AUX bus is the power sequencing timings.
+  This is the reason why, historically, we've always had to explicitly
+  list eDP panels. We solve that here with two tricks. The "worst case"
+  power on timings for any panels expected to be connected to a board are
+  specified in these bindings. Once we've powered on, it's expected that
+  the operating system will lookup the panel in a table (based on EDID
+  information) to figure out other power sequencing timings.
+
+  eDP panels in general can have somewhat arbitrary power sequencing
+  requirements. However, even though it's arbitrary in general, the
+  vast majority of panel datasheets have a power sequence diagram that
+  looks the exactly the same as every other panel. Each panel datasheet
+  cares about different timings in this diagram but the fact that the
+  diagram is so similar means we can come up with a single driver to
+  handle it.
+
+  These diagrams all look roughly like this, sometimes labeled with
+  slightly different numbers / lines but all pretty much the same
+  sequence. This is because much of this diagram comes straight from
+  the eDP Standard.
+
+                __________________________________________________
+  Vdd       ___/:                                                :\____       /
+          _/    :                                                :     \_____/
+           :<T1>:<T2>:                                 :<--T10-->:<T11>:<T12>:
+                :    +-----------------------+---------+---------+
+  eDP     -----------+ Black video           | Src vid | Blk vid +
+  Display       :    +-----------------------+---------+---------+
+                :     _______________________:_________:_________:
+  HPD           :<T3>|                       :         :         |
+          ___________|                       :         :         |_____________
+                     :                       :         :         :
+  Sink               +-----------------------:---------:---------+
+  AUX CH  -----------+ AUX Ch operational    :         :         +-------------
+                     +-----------------------:---------:---------+
+                     :                       :         :         :
+                     :<T4>:             :<T7>:         :         :
+  Src main                +------+------+--------------+---------+
+  lnk data----------------+LnkTrn| Idle |Valid vid data| Idle/off+-------------
+                          +------+------+--------------+---------+
+                          : <T5> :<-T6->:<-T8->:       :
+                                               :__:<T9>:
+  LED_EN                                       |  |
+          _____________________________________|  |____________________________
+                                               :  :
+                                     __________:__:_
+  PWM                               |          :  : |
+          __________________________|          :  : |__________________________
+                                    :          :  : :
+                       _____________:__________:__:_:______
+  Bklight         ____/:            :          :  : :     :\____
+  power   _______/     :<---T13---->:          :  : :<T16>:     \______________
+  (Vbl)          :<T17>:<---------T14--------->:  :<-T15->:<T18>:
+
+  The above looks fairly complex but, as per above, each panel only cares
+  about a subset of those timings.
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    const: edp-panel
+
+  hpd-reliable-delay-ms:
+    description:
+      A fixed amount of time that must be waited after powering on the
+      panel's power-supply before the HPD signal is a reliable way to know
+      when the AUX channel is ready. This is useful for panels that glitch
+      the HPD at the start of power-on. This value is not needed if HPD is
+      always reliable for all panels that might be connected.
+
+  hpd-absent-delay-ms:
+    description:
+      The panel specifies that HPD will be asserted this many milliseconds
+      from power on (timing T3 in the diagram above). If we have no way to
+      measure HPD then a fixed delay of this many milliseconds can be used.
+      This can also be used as a timeout when waiting for HPD. Does not
+      include the hpd-reliable-delay, so if hpd-reliable-delay was 80 ms
+      and hpd-absent-delay was 200 ms then we'd do a fixed 80 ms delay and
+      then we know HPD would assert in the next 120 ms. This value is not
+      needed if HPD hooked up, either through a GPIO in the panel node or
+      hooked up directly to the eDP controller.
+
+  backlight: true
+  enable-gpios: true
+  port: true
+  power-supply: true
+  no-hpd: true
+  hpd-gpios: true
+
+additionalProperties: false
+
+required:
+  - compatible
+  - power-supply
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,rpmh.h>
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      bridge@2d {
+        compatible = "ti,sn65dsi86";
+        reg = <0x2d>;
+
+        interrupt-parent = <&tlmm>;
+        interrupts = <10 IRQ_TYPE_LEVEL_HIGH>;
+
+        enable-gpios = <&tlmm 102 GPIO_ACTIVE_HIGH>;
+
+        vpll-supply = <&src_pp1800_s4a>;
+        vccio-supply = <&src_pp1800_s4a>;
+        vcca-supply = <&src_pp1200_l2a>;
+        vcc-supply = <&src_pp1200_l2a>;
+
+        clocks = <&rpmhcc RPMH_LN_BB_CLK2>;
+        clock-names = "refclk";
+
+        no-hpd;
+
+        ports {
+          #address-cells = <1>;
+          #size-cells = <0>;
+
+          port@0 {
+            reg = <0>;
+            endpoint {
+              remote-endpoint = <&dsi0_out>;
+            };
+          };
+
+          port@1 {
+            reg = <1>;
+            sn65dsi86_out: endpoint {
+              remote-endpoint = <&panel_in_edp>;
+            };
+          };
+        };
+
+        aux-bus {
+          panel {
+            compatible = "edp-panel";
+            power-supply = <&pp3300_dx_edp>;
+            backlight = <&backlight>;
+            hpd-gpios = <&sn65dsi86_bridge 2 GPIO_ACTIVE_HIGH>;
+            hpd-reliable-delay-ms = <15>;
+
+            port {
+              panel_in_edp: endpoint {
+                remote-endpoint = <&sn65dsi86_out>;
+              };
+            };
+          };
+        };
+      };
+    };

MAINTAINERS

@@ -6022,7 +6022,7 @@ DRM DRIVER FOR SAMSUNG S6D27A1 PANELS
 M:	Markuss Broks <markuss.broks@gmail.com>
 S:	Maintained
 F:	Documentation/devicetree/bindings/display/panel/samsung,s6d27a1.yaml
-F:	driver/gpu/drm/panel/panel-samsung-s6d27a1.c
+F:	drivers/gpu/drm/panel/panel-samsung-s6d27a1.c
 
 DRM DRIVER FOR SITRONIX ST7703 PANELS
 M:	Guido Günther <agx@sigxcpu.org>
@@ -6431,6 +6431,14 @@ T:	git git://anongit.freedesktop.org/drm/drm-misc
 F:	drivers/gpu/drm/ttm/
 F:	include/drm/ttm/
 
+DRM GPU SCHEDULER
+M:	Andrey Grodzovsky <andrey.grodzovsky@amd.com>
+L:	dri-devel@lists.freedesktop.org
+S:	Maintained
+T:	git git://anongit.freedesktop.org/drm/drm-misc
+F:	drivers/gpu/drm/scheduler/
+F:	include/drm/gpu_scheduler.h
+
 DSBR100 USB FM RADIO DRIVER
 M:	Alexey Klimov <klimov.linux@gmail.com>
 L:	linux-media@vger.kernel.org

arch/arm/configs/at91_dt_defconfig

@@ -144,6 +144,7 @@ CONFIG_VIDEO_MT9V032=m
 CONFIG_DRM=y
 CONFIG_DRM_ATMEL_HLCDC=y
 CONFIG_DRM_PANEL_SIMPLE=y
+CONFIG_DRM_PANEL_EDP=y
 CONFIG_FB_ATMEL=y
 CONFIG_BACKLIGHT_ATMEL_LCDC=y
 CONFIG_BACKLIGHT_PWM=y

arch/arm/configs/exynos_defconfig

@@ -227,6 +227,7 @@ CONFIG_DRM_EXYNOS_DPI=y
 CONFIG_DRM_EXYNOS_DSI=y
 CONFIG_DRM_EXYNOS_HDMI=y
 CONFIG_DRM_PANEL_SIMPLE=y
+CONFIG_DRM_PANEL_EDP=y
 CONFIG_DRM_PANEL_SAMSUNG_LD9040=y
 CONFIG_DRM_PANEL_SAMSUNG_S6E63J0X03=y
 CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0=y

arch/arm/configs/imx_v6_v7_defconfig

@@ -281,6 +281,7 @@ CONFIG_DRM=y
 CONFIG_DRM_MSM=y
 CONFIG_DRM_PANEL_LVDS=y
 CONFIG_DRM_PANEL_SIMPLE=y
+CONFIG_DRM_PANEL_EDP=y
 CONFIG_DRM_PANEL_SEIKO_43WVF1G=y
 CONFIG_DRM_TI_TFP410=y
 CONFIG_DRM_DW_HDMI_AHB_AUDIO=m

arch/arm/configs/lpc32xx_defconfig

@@ -108,6 +108,7 @@ CONFIG_REGULATOR=y
 CONFIG_REGULATOR_FIXED_VOLTAGE=y
 CONFIG_DRM=y
 CONFIG_DRM_PANEL_SIMPLE=y
+CONFIG_DRM_PANEL_EDP=y
 CONFIG_DRM_PL111=y
 CONFIG_FB_MODE_HELPERS=y
 CONFIG_BACKLIGHT_CLASS_DEVICE=y

arch/arm/configs/multi_v5_defconfig

@@ -194,6 +194,7 @@ CONFIG_VIDEO_ATMEL_ISI=m
 CONFIG_DRM=y
 CONFIG_DRM_ATMEL_HLCDC=m
 CONFIG_DRM_PANEL_SIMPLE=y
+CONFIG_DRM_PANEL_EDP=y
 CONFIG_DRM_ASPEED_GFX=m
 CONFIG_FB_IMX=y
 CONFIG_FB_ATMEL=y

arch/arm/configs/multi_v7_defconfig

@@ -704,6 +704,7 @@ CONFIG_DRM_TEGRA=y
 CONFIG_DRM_STM=m
 CONFIG_DRM_STM_DSI=m
 CONFIG_DRM_PANEL_SIMPLE=y
+CONFIG_DRM_PANEL_EDP=y
 CONFIG_DRM_PANEL_SAMSUNG_LD9040=m
 CONFIG_DRM_PANEL_ORISETECH_OTM8009A=m
 CONFIG_DRM_PANEL_RAYDIUM_RM68200=m

arch/arm/configs/omap2plus_defconfig

@@ -511,6 +511,7 @@ CONFIG_OMAP2_DSS_DSI=y
 CONFIG_DRM_TILCDC=m
 CONFIG_DRM_PANEL_DSI_CM=m
 CONFIG_DRM_PANEL_SIMPLE=m
+CONFIG_DRM_PANEL_EDP=m
 CONFIG_DRM_PANEL_LG_LB035Q02=m
 CONFIG_DRM_PANEL_NEC_NL8048HL11=m
 CONFIG_DRM_PANEL_SHARP_LS037V7DW01=m

arch/arm/configs/qcom_defconfig

@@ -158,6 +158,7 @@ CONFIG_MEDIA_SUPPORT=y
 CONFIG_DRM=y
 CONFIG_DRM_MSM=m
 CONFIG_DRM_PANEL_SIMPLE=y
+CONFIG_DRM_PANEL_EDP=y
 CONFIG_DRM_ANALOGIX_ANX78XX=m
 CONFIG_FB=y
 CONFIG_FRAMEBUFFER_CONSOLE=y

arch/arm/configs/realview_defconfig

@@ -61,6 +61,7 @@ CONFIG_REGULATOR=y
 CONFIG_REGULATOR_FIXED_VOLTAGE=y
 CONFIG_DRM=y
 CONFIG_DRM_PANEL_SIMPLE=y
+CONFIG_DRM_PANEL_EDP=y
 CONFIG_DRM_DISPLAY_CONNECTOR=y
 CONFIG_DRM_SIMPLE_BRIDGE=y
 CONFIG_DRM_PL111=y

arch/arm/configs/sama5_defconfig

@@ -160,6 +160,7 @@ CONFIG_VIDEO_MT9V032=m
 CONFIG_DRM=y
 CONFIG_DRM_ATMEL_HLCDC=y
 CONFIG_DRM_PANEL_SIMPLE=y
+CONFIG_DRM_PANEL_EDP=y
 CONFIG_LCD_CLASS_DEVICE=y
 CONFIG_BACKLIGHT_CLASS_DEVICE=y
 CONFIG_BACKLIGHT_PWM=y

arch/arm/configs/shmobile_defconfig

@@ -129,6 +129,7 @@ CONFIG_VIDEO_ML86V7667=y
 CONFIG_DRM=y
 CONFIG_DRM_RCAR_DU=y
 CONFIG_DRM_PANEL_SIMPLE=y
+CONFIG_DRM_PANEL_EDP=y
 CONFIG_DRM_DISPLAY_CONNECTOR=y
 CONFIG_DRM_LVDS_CODEC=y
 CONFIG_DRM_SII902X=y

arch/arm/configs/sunxi_defconfig

@@ -108,6 +108,7 @@ CONFIG_DRM_SUN4I_HDMI_CEC=y
 CONFIG_DRM_SUN8I_DW_HDMI=y
 CONFIG_DRM_PANEL_LVDS=y
 CONFIG_DRM_PANEL_SIMPLE=y
+CONFIG_DRM_PANEL_EDP=y
 CONFIG_DRM_SIMPLE_BRIDGE=y
 CONFIG_DRM_LIMA=y
 CONFIG_FB_SIMPLE=y

arch/arm/configs/tegra_defconfig

@@ -199,6 +199,7 @@ CONFIG_DRM_TEGRA=y
 CONFIG_DRM_TEGRA_STAGING=y
 CONFIG_DRM_PANEL_LVDS=y
 CONFIG_DRM_PANEL_SIMPLE=y
+CONFIG_DRM_PANEL_EDP=y
 CONFIG_DRM_LVDS_CODEC=y
 CONFIG_FB=y
 CONFIG_BACKLIGHT_CLASS_DEVICE=y

arch/arm/configs/versatile_defconfig

@@ -57,6 +57,7 @@ CONFIG_GPIO_PL061=y
 CONFIG_DRM=y
 CONFIG_DRM_PANEL_ARM_VERSATILE=y
 CONFIG_DRM_PANEL_SIMPLE=y
+CONFIG_DRM_PANEL_EDP=y
 CONFIG_DRM_DISPLAY_CONNECTOR=y
 CONFIG_DRM_SIMPLE_BRIDGE=y
 CONFIG_DRM_PL111=y

arch/arm/configs/vexpress_defconfig

@@ -77,6 +77,7 @@ CONFIG_SENSORS_VEXPRESS=y
 CONFIG_REGULATOR_VEXPRESS=y
 CONFIG_DRM=y
 CONFIG_DRM_PANEL_SIMPLE=y
+CONFIG_DRM_PANEL_EDP=y
 CONFIG_DRM_SII902X=y
 CONFIG_DRM_PL111=y
 CONFIG_FB=y

arch/arm64/configs/defconfig

@@ -697,6 +697,7 @@ CONFIG_DRM_MSM=m
 CONFIG_DRM_TEGRA=m
 CONFIG_DRM_PANEL_LVDS=m
 CONFIG_DRM_PANEL_SIMPLE=m
+CONFIG_DRM_PANEL_EDP=m
 CONFIG_DRM_PANEL_BOE_TV101WUM_NL6=m
 CONFIG_DRM_PANEL_MANTIX_MLAF057WE51=m
 CONFIG_DRM_PANEL_RAYDIUM_RM67191=m

drivers/gpu/drm/bridge/ite-it66121.c

@@ -918,11 +918,23 @@ static int it66121_probe(struct i2c_client *client,
 		return -EINVAL;
 
 	ep = of_graph_get_remote_node(dev->of_node, 1, -1);
-	if (!ep)
+	if (!ep) {
-		return -EPROBE_DEFER;
+		dev_err(ctx->dev, "The endpoint is unconnected\n");
+		return -EINVAL;
+	}
+
+	if (!of_device_is_available(ep)) {
+		of_node_put(ep);
+		dev_err(ctx->dev, "The remote device is disabled\n");
+		return -ENODEV;
+	}
 
 	ctx->next_bridge = of_drm_find_bridge(ep);
 	of_node_put(ep);
+	if (!ctx->next_bridge) {
+		dev_dbg(ctx->dev, "Next bridge not found, deferring probe\n");
+		return -EPROBE_DEFER;
+	}
 
 	if (!ctx->next_bridge)
 		return -EPROBE_DEFER;

drivers/gpu/drm/bridge/panel.c

@@ -9,6 +9,7 @@
 #include <drm/drm_connector.h>
 #include <drm/drm_encoder.h>
 #include <drm/drm_modeset_helper_vtables.h>
+#include <drm/drm_of.h>
 #include <drm/drm_panel.h>
 #include <drm/drm_print.h>
 #include <drm/drm_probe_helper.h>
@@ -332,3 +333,39 @@ struct drm_connector *drm_panel_bridge_connector(struct drm_bridge *bridge)
 	return &panel_bridge->connector;
 }
 EXPORT_SYMBOL(drm_panel_bridge_connector);
+
+#ifdef CONFIG_OF
+/**
+ * devm_drm_of_get_bridge - Return next bridge in the chain
+ * @dev: device to tie the bridge lifetime to
+ * @np: device tree node containing encoder output ports
+ * @port: port in the device tree node
+ * @endpoint: endpoint in the device tree node
+ *
+ * Given a DT node's port and endpoint number, finds the connected node
+ * and returns the associated bridge if any, or creates and returns a
+ * drm panel bridge instance if a panel is connected.
+ *
+ * Returns a pointer to the bridge if successful, or an error pointer
+ * otherwise.
+ */
+struct drm_bridge *devm_drm_of_get_bridge(struct device *dev,
+					  struct device_node *np,
+					  u32 port, u32 endpoint)
+{
+	struct drm_bridge *bridge;
+	struct drm_panel *panel;
+	int ret;
+
+	ret = drm_of_find_panel_or_bridge(np, port, endpoint,
+					  &panel, &bridge);
+	if (ret)
+		return ERR_PTR(ret);
+
+	if (panel)
+		bridge = devm_drm_panel_bridge_add(dev, panel);
+
+	return bridge;
+}
+EXPORT_SYMBOL(devm_drm_of_get_bridge);
+#endif

drivers/gpu/drm/drm_bridge.c

@@ -1232,40 +1232,6 @@ struct drm_bridge *of_drm_find_bridge(struct device_node *np)
 	return NULL;
 }
 EXPORT_SYMBOL(of_drm_find_bridge);
-
-/**
- * devm_drm_of_get_bridge - Return next bridge in the chain
- * @dev: device to tie the bridge lifetime to
- * @np: device tree node containing encoder output ports
- * @port: port in the device tree node
- * @endpoint: endpoint in the device tree node
- *
- * Given a DT node's port and endpoint number, finds the connected node
- * and returns the associated bridge if any, or creates and returns a
- * drm panel bridge instance if a panel is connected.
- *
- * Returns a pointer to the bridge if successful, or an error pointer
- * otherwise.
- */
-struct drm_bridge *devm_drm_of_get_bridge(struct device *dev,
-					  struct device_node *np,
-					  u32 port, u32 endpoint)
-{
-	struct drm_bridge *bridge;
-	struct drm_panel *panel;
-	int ret;
-
-	ret = drm_of_find_panel_or_bridge(np, port, endpoint,
-					  &panel, &bridge);
-	if (ret)
-		return ERR_PTR(ret);
-
-	if (panel)
-		bridge = devm_drm_panel_bridge_add(dev, panel);
-
-	return bridge;
-}
-EXPORT_SYMBOL(devm_drm_of_get_bridge);
 #endif
 
 MODULE_AUTHOR("Ajay Kumar <ajaykumar.rs@samsung.com>");

drivers/gpu/drm/drm_connector.c

@@ -1620,7 +1620,7 @@ EXPORT_SYMBOL(drm_mode_create_tv_properties);
  * connectors.
  *
  * Atomic drivers should use drm_connector_attach_scaling_mode_property()
- * instead to correctly assign &drm_connector_state.picture_aspect_ratio
+ * instead to correctly assign &drm_connector_state.scaling_mode
  * in the atomic state.
  */
 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
@@ -1740,7 +1740,7 @@ EXPORT_SYMBOL(drm_connector_attach_vrr_capable_property);
  * @scaling_mode_mask: or'ed mask of BIT(%DRM_MODE_SCALE_\*).
  *
  * This is used to add support for scaling mode to atomic drivers.
- * The scaling mode will be set to &drm_connector_state.picture_aspect_ratio
+ * The scaling mode will be set to &drm_connector_state.scaling_mode
  * and can be used from &drm_connector_helper_funcs->atomic_check for validation.
  *
  * This is the atomic version of drm_mode_create_scaling_mode_property().

drivers/gpu/drm/drm_edid.c

@@ -100,122 +100,127 @@ struct detailed_mode_closure {
 #define LEVEL_GTF2	2
 #define LEVEL_CVT	3
 
+#define EDID_QUIRK(vend, product_id, _quirks) \
+{ \
+	.panel_id = drm_edid_encode_panel_id(vend, product_id), \
+	.quirks = _quirks \
+}
+
 static const struct edid_quirk {
-	char vendor[4];
+	u32 panel_id;
-	int product_id;
 	u32 quirks;
 } edid_quirk_list[] = {
 	/* Acer AL1706 */
-	{ "ACR", 44358, EDID_QUIRK_PREFER_LARGE_60 },
+	EDID_QUIRK("ACR", 44358, EDID_QUIRK_PREFER_LARGE_60),
 	/* Acer F51 */
-	{ "API", 0x7602, EDID_QUIRK_PREFER_LARGE_60 },
+	EDID_QUIRK("API", 0x7602, EDID_QUIRK_PREFER_LARGE_60),
 
 	/* AEO model 0 reports 8 bpc, but is a 6 bpc panel */
-	{ "AEO", 0, EDID_QUIRK_FORCE_6BPC },
+	EDID_QUIRK("AEO", 0, EDID_QUIRK_FORCE_6BPC),
 
 	/* BOE model on HP Pavilion 15-n233sl reports 8 bpc, but is a 6 bpc panel */
-	{ "BOE", 0x78b, EDID_QUIRK_FORCE_6BPC },
+	EDID_QUIRK("BOE", 0x78b, EDID_QUIRK_FORCE_6BPC),
 
 	/* CPT panel of Asus UX303LA reports 8 bpc, but is a 6 bpc panel */
-	{ "CPT", 0x17df, EDID_QUIRK_FORCE_6BPC },
+	EDID_QUIRK("CPT", 0x17df, EDID_QUIRK_FORCE_6BPC),
 
 	/* SDC panel of Lenovo B50-80 reports 8 bpc, but is a 6 bpc panel */
-	{ "SDC", 0x3652, EDID_QUIRK_FORCE_6BPC },
+	EDID_QUIRK("SDC", 0x3652, EDID_QUIRK_FORCE_6BPC),
 
 	/* BOE model 0x0771 reports 8 bpc, but is a 6 bpc panel */
-	{ "BOE", 0x0771, EDID_QUIRK_FORCE_6BPC },
+	EDID_QUIRK("BOE", 0x0771, EDID_QUIRK_FORCE_6BPC),
 
 	/* Belinea 10 15 55 */
-	{ "MAX", 1516, EDID_QUIRK_PREFER_LARGE_60 },
+	EDID_QUIRK("MAX", 1516, EDID_QUIRK_PREFER_LARGE_60),
-	{ "MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60 },
+	EDID_QUIRK("MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60),
 
 	/* Envision Peripherals, Inc. EN-7100e */
-	{ "EPI", 59264, EDID_QUIRK_135_CLOCK_TOO_HIGH },
+	EDID_QUIRK("EPI", 59264, EDID_QUIRK_135_CLOCK_TOO_HIGH),
 	/* Envision EN2028 */
-	{ "EPI", 8232, EDID_QUIRK_PREFER_LARGE_60 },
+	EDID_QUIRK("EPI", 8232, EDID_QUIRK_PREFER_LARGE_60),
 
 	/* Funai Electronics PM36B */
-	{ "FCM", 13600, EDID_QUIRK_PREFER_LARGE_75 |
+	EDID_QUIRK("FCM", 13600, EDID_QUIRK_PREFER_LARGE_75 |
-	  EDID_QUIRK_DETAILED_IN_CM },
+				       EDID_QUIRK_DETAILED_IN_CM),
 
 	/* LGD panel of HP zBook 17 G2, eDP 10 bpc, but reports unknown bpc */
-	{ "LGD", 764, EDID_QUIRK_FORCE_10BPC },
+	EDID_QUIRK("LGD", 764, EDID_QUIRK_FORCE_10BPC),
 
 	/* LG Philips LCD LP154W01-A5 */
-	{ "LPL", 0, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE },
+	EDID_QUIRK("LPL", 0, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE),
-	{ "LPL", 0x2a00, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE },
+	EDID_QUIRK("LPL", 0x2a00, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE),
 
 	/* Samsung SyncMaster 205BW.  Note: irony */
-	{ "SAM", 541, EDID_QUIRK_DETAILED_SYNC_PP },
+	EDID_QUIRK("SAM", 541, EDID_QUIRK_DETAILED_SYNC_PP),
 	/* Samsung SyncMaster 22[5-6]BW */
-	{ "SAM", 596, EDID_QUIRK_PREFER_LARGE_60 },
+	EDID_QUIRK("SAM", 596, EDID_QUIRK_PREFER_LARGE_60),
-	{ "SAM", 638, EDID_QUIRK_PREFER_LARGE_60 },
+	EDID_QUIRK("SAM", 638, EDID_QUIRK_PREFER_LARGE_60),
 
 	/* Sony PVM-2541A does up to 12 bpc, but only reports max 8 bpc */
-	{ "SNY", 0x2541, EDID_QUIRK_FORCE_12BPC },
+	EDID_QUIRK("SNY", 0x2541, EDID_QUIRK_FORCE_12BPC),
 
 	/* ViewSonic VA2026w */
-	{ "VSC", 5020, EDID_QUIRK_FORCE_REDUCED_BLANKING },
+	EDID_QUIRK("VSC", 5020, EDID_QUIRK_FORCE_REDUCED_BLANKING),
 
 	/* Medion MD 30217 PG */
-	{ "MED", 0x7b8, EDID_QUIRK_PREFER_LARGE_75 },
+	EDID_QUIRK("MED", 0x7b8, EDID_QUIRK_PREFER_LARGE_75),
 
 	/* Lenovo G50 */
-	{ "SDC", 18514, EDID_QUIRK_FORCE_6BPC },
+	EDID_QUIRK("SDC", 18514, EDID_QUIRK_FORCE_6BPC),
 
 	/* Panel in Samsung NP700G7A-S01PL notebook reports 6bpc */
-	{ "SEC", 0xd033, EDID_QUIRK_FORCE_8BPC },
+	EDID_QUIRK("SEC", 0xd033, EDID_QUIRK_FORCE_8BPC),
 
 	/* Rotel RSX-1058 forwards sink's EDID but only does HDMI 1.1*/
-	{ "ETR", 13896, EDID_QUIRK_FORCE_8BPC },
+	EDID_QUIRK("ETR", 13896, EDID_QUIRK_FORCE_8BPC),
 
 	/* Valve Index Headset */
-	{ "VLV", 0x91a8, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("VLV", 0x91a8, EDID_QUIRK_NON_DESKTOP),
-	{ "VLV", 0x91b0, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("VLV", 0x91b0, EDID_QUIRK_NON_DESKTOP),
-	{ "VLV", 0x91b1, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("VLV", 0x91b1, EDID_QUIRK_NON_DESKTOP),
-	{ "VLV", 0x91b2, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("VLV", 0x91b2, EDID_QUIRK_NON_DESKTOP),
-	{ "VLV", 0x91b3, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("VLV", 0x91b3, EDID_QUIRK_NON_DESKTOP),
-	{ "VLV", 0x91b4, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("VLV", 0x91b4, EDID_QUIRK_NON_DESKTOP),
-	{ "VLV", 0x91b5, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("VLV", 0x91b5, EDID_QUIRK_NON_DESKTOP),
-	{ "VLV", 0x91b6, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("VLV", 0x91b6, EDID_QUIRK_NON_DESKTOP),
-	{ "VLV", 0x91b7, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("VLV", 0x91b7, EDID_QUIRK_NON_DESKTOP),
-	{ "VLV", 0x91b8, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("VLV", 0x91b8, EDID_QUIRK_NON_DESKTOP),
-	{ "VLV", 0x91b9, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("VLV", 0x91b9, EDID_QUIRK_NON_DESKTOP),
-	{ "VLV", 0x91ba, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("VLV", 0x91ba, EDID_QUIRK_NON_DESKTOP),
-	{ "VLV", 0x91bb, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("VLV", 0x91bb, EDID_QUIRK_NON_DESKTOP),
-	{ "VLV", 0x91bc, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("VLV", 0x91bc, EDID_QUIRK_NON_DESKTOP),
-	{ "VLV", 0x91bd, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("VLV", 0x91bd, EDID_QUIRK_NON_DESKTOP),
-	{ "VLV", 0x91be, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("VLV", 0x91be, EDID_QUIRK_NON_DESKTOP),
-	{ "VLV", 0x91bf, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("VLV", 0x91bf, EDID_QUIRK_NON_DESKTOP),
 
 	/* HTC Vive and Vive Pro VR Headsets */
-	{ "HVR", 0xaa01, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("HVR", 0xaa01, EDID_QUIRK_NON_DESKTOP),
-	{ "HVR", 0xaa02, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("HVR", 0xaa02, EDID_QUIRK_NON_DESKTOP),
 
 	/* Oculus Rift DK1, DK2, CV1 and Rift S VR Headsets */
-	{ "OVR", 0x0001, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("OVR", 0x0001, EDID_QUIRK_NON_DESKTOP),
-	{ "OVR", 0x0003, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("OVR", 0x0003, EDID_QUIRK_NON_DESKTOP),
-	{ "OVR", 0x0004, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("OVR", 0x0004, EDID_QUIRK_NON_DESKTOP),
-	{ "OVR", 0x0012, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("OVR", 0x0012, EDID_QUIRK_NON_DESKTOP),
 
 	/* Windows Mixed Reality Headsets */
-	{ "ACR", 0x7fce, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("ACR", 0x7fce, EDID_QUIRK_NON_DESKTOP),
-	{ "HPN", 0x3515, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("HPN", 0x3515, EDID_QUIRK_NON_DESKTOP),
-	{ "LEN", 0x0408, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("LEN", 0x0408, EDID_QUIRK_NON_DESKTOP),
-	{ "LEN", 0xb800, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("LEN", 0xb800, EDID_QUIRK_NON_DESKTOP),
-	{ "FUJ", 0x1970, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("FUJ", 0x1970, EDID_QUIRK_NON_DESKTOP),
-	{ "DEL", 0x7fce, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("DEL", 0x7fce, EDID_QUIRK_NON_DESKTOP),
-	{ "SEC", 0x144a, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("SEC", 0x144a, EDID_QUIRK_NON_DESKTOP),
-	{ "AUS", 0xc102, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("AUS", 0xc102, EDID_QUIRK_NON_DESKTOP),
 
 	/* Sony PlayStation VR Headset */
-	{ "SNY", 0x0704, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("SNY", 0x0704, EDID_QUIRK_NON_DESKTOP),
 
 	/* Sensics VR Headsets */
-	{ "SEN", 0x1019, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("SEN", 0x1019, EDID_QUIRK_NON_DESKTOP),
 
 	/* OSVR HDK and HDK2 VR Headsets */
-	{ "SVR", 0x1019, EDID_QUIRK_NON_DESKTOP },
+	EDID_QUIRK("SVR", 0x1019, EDID_QUIRK_NON_DESKTOP),
 };
 
 /*
@@ -1905,6 +1910,44 @@ int drm_add_override_edid_modes(struct drm_connector *connector)
 }
 EXPORT_SYMBOL(drm_add_override_edid_modes);
 
+static struct edid *drm_do_get_edid_base_block(
+	int (*get_edid_block)(void *data, u8 *buf, unsigned int block,
+			      size_t len),
+	void *data, bool *edid_corrupt, int *null_edid_counter)
+{
+	int i;
+	void *edid;
+
+	edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
+	if (edid == NULL)
+		return NULL;
+
+	/* base block fetch */
+	for (i = 0; i < 4; i++) {
+		if (get_edid_block(data, edid, 0, EDID_LENGTH))
+			goto out;
+		if (drm_edid_block_valid(edid, 0, false, edid_corrupt))
+			break;
+		if (i == 0 && drm_edid_is_zero(edid, EDID_LENGTH)) {
+			if (null_edid_counter)
+				(*null_edid_counter)++;
+			goto carp;
+		}
+	}
+	if (i == 4)
+		goto carp;
+
+	return edid;
+
+carp:
+	kfree(edid);
+	return ERR_PTR(-EINVAL);
+
+out:
+	kfree(edid);
+	return NULL;
+}
+
 /**
  * drm_do_get_edid - get EDID data using a custom EDID block read function
  * @connector: connector we're probing
@@ -1938,25 +1981,16 @@ struct edid *drm_do_get_edid(struct drm_connector *connector,
 	if (override)
 		return override;
 
-	if ((edid = kmalloc(EDID_LENGTH, GFP_KERNEL)) == NULL)
+	edid = (u8 *)drm_do_get_edid_base_block(get_edid_block, data,
+						&connector->edid_corrupt,
+						&connector->null_edid_counter);
+	if (IS_ERR_OR_NULL(edid)) {
+		if (IS_ERR(edid))
+			connector_bad_edid(connector, edid, 1);
 		return NULL;
-
-	/* base block fetch */
-	for (i = 0; i < 4; i++) {
-		if (get_edid_block(data, edid, 0, EDID_LENGTH))
-			goto out;
-		if (drm_edid_block_valid(edid, 0, false,
-					 &connector->edid_corrupt))
-			break;
-		if (i == 0 && drm_edid_is_zero(edid, EDID_LENGTH)) {
-			connector->null_edid_counter++;
-			goto carp;
-		}
 	}
-	if (i == 4)
-		goto carp;
 
-	/* if there's no extensions, we're done */
+	/* if there's no extensions or no connector, we're done */
 	valid_extensions = edid[0x7e];
 	if (valid_extensions == 0)
 		return (struct edid *)edid;
@@ -2010,8 +2044,6 @@ struct edid *drm_do_get_edid(struct drm_connector *connector,
 
 	return (struct edid *)edid;
 
-carp:
-	connector_bad_edid(connector, edid, 1);
 out:
 	kfree(edid);
 	return NULL;
@@ -2060,6 +2092,72 @@ struct edid *drm_get_edid(struct drm_connector *connector,
 }
 EXPORT_SYMBOL(drm_get_edid);
 
+static u32 edid_extract_panel_id(const struct edid *edid)
+{
+	/*
+	 * We represent the ID as a 32-bit number so it can easily be compared
+	 * with "==".
+	 *
+	 * NOTE that we deal with endianness differently for the top half
+	 * of this ID than for the bottom half. The bottom half (the product
+	 * id) gets decoded as little endian by the EDID_PRODUCT_ID because
+	 * that's how everyone seems to interpret it. The top half (the mfg_id)
+	 * gets stored as big endian because that makes
+	 * drm_edid_encode_panel_id() and drm_edid_decode_panel_id() easier
+	 * to write (it's easier to extract the ASCII). It doesn't really
+	 * matter, though, as long as the number here is unique.
+	 */
+	return (u32)edid->mfg_id[0] << 24   |
+	       (u32)edid->mfg_id[1] << 16   |
+	       (u32)EDID_PRODUCT_ID(edid);
+}
+
+/**
+ * drm_edid_get_panel_id - Get a panel's ID through DDC
+ * @adapter: I2C adapter to use for DDC
+ *
+ * This function reads the first block of the EDID of a panel and (assuming
+ * that the EDID is valid) extracts the ID out of it. The ID is a 32-bit value
+ * (16 bits of manufacturer ID and 16 bits of per-manufacturer ID) that's
+ * supposed to be different for each different modem of panel.
+ *
+ * This function is intended to be used during early probing on devices where
+ * more than one panel might be present. Because of its intended use it must
+ * assume that the EDID of the panel is correct, at least as far as the ID
+ * is concerned (in other words, we don't process any overrides here).
+ *
+ * NOTE: it's expected that this function and drm_do_get_edid() will both
+ * be read the EDID, but there is no caching between them. Since we're only
+ * reading the first block, hopefully this extra overhead won't be too big.
+ *
+ * Return: A 32-bit ID that should be different for each make/model of panel.
+ *         See the functions drm_edid_encode_panel_id() and
+ *         drm_edid_decode_panel_id() for some details on the structure of this
+ *         ID.
+ */
+
+u32 drm_edid_get_panel_id(struct i2c_adapter *adapter)
+{
+	struct edid *edid;
+	u32 panel_id;
+
+	edid = drm_do_get_edid_base_block(drm_do_probe_ddc_edid, adapter,
+					  NULL, NULL);
+
+	/*
+	 * There are no manufacturer IDs of 0, so if there is a problem reading
+	 * the EDID then we'll just return 0.
+	 */
+	if (IS_ERR_OR_NULL(edid))
+		return 0;
+
+	panel_id = edid_extract_panel_id(edid);
+	kfree(edid);
+
+	return panel_id;
+}
+EXPORT_SYMBOL(drm_edid_get_panel_id);
+
 /**
  * drm_get_edid_switcheroo - get EDID data for a vga_switcheroo output
  * @connector: connector we're probing
@@ -2103,25 +2201,6 @@ EXPORT_SYMBOL(drm_edid_duplicate);
 
 /*** EDID parsing ***/
 
-/**
- * edid_vendor - match a string against EDID's obfuscated vendor field
- * @edid: EDID to match
- * @vendor: vendor string
- *
- * Returns true if @vendor is in @edid, false otherwise
- */
-static bool edid_vendor(const struct edid *edid, const char *vendor)
-{
-	char edid_vendor[3];
-
-	edid_vendor[0] = ((edid->mfg_id[0] & 0x7c) >> 2) + '@';
-	edid_vendor[1] = (((edid->mfg_id[0] & 0x3) << 3) |
-			  ((edid->mfg_id[1] & 0xe0) >> 5)) + '@';
-	edid_vendor[2] = (edid->mfg_id[1] & 0x1f) + '@';
-
-	return !strncmp(edid_vendor, vendor, 3);
-}
-
 /**
  * edid_get_quirks - return quirk flags for a given EDID
  * @edid: EDID to process
@@ -2130,14 +2209,13 @@ static bool edid_vendor(const struct edid *edid, const char *vendor)
  */
 static u32 edid_get_quirks(const struct edid *edid)
 {
+	u32 panel_id = edid_extract_panel_id(edid);
 	const struct edid_quirk *quirk;
 	int i;
 
 	for (i = 0; i < ARRAY_SIZE(edid_quirk_list); i++) {
 		quirk = &edid_quirk_list[i];
-
+		if (quirk->panel_id == panel_id)
-		if (edid_vendor(edid, quirk->vendor) &&
-		    (EDID_PRODUCT_ID(edid) == quirk->product_id))
 			return quirk->quirks;
 	}
 

drivers/gpu/drm/panel/Kconfig

@@ -77,14 +77,26 @@ config DRM_PANEL_LVDS
 	  backlight handling if the panel is attached to a backlight controller.
 
 config DRM_PANEL_SIMPLE
-	tristate "support for simple panels"
+	tristate "support for simple panels (other than eDP ones)"
+	depends on OF
+	depends on BACKLIGHT_CLASS_DEVICE
+	depends on PM
+	select VIDEOMODE_HELPERS
+	help
+	  DRM panel driver for dumb non-eDP panels that need at most a regulator
+	  and a GPIO to be powered up. Optionally a backlight can be attached so
+	  that it can be automatically turned off when the panel goes into a
+	  low power state.
+
+config DRM_PANEL_EDP
+	tristate "support for simple Embedded DisplayPort panels"
 	depends on OF
 	depends on BACKLIGHT_CLASS_DEVICE
 	depends on PM
 	select VIDEOMODE_HELPERS
 	select DRM_DP_AUX_BUS
 	help
-	  DRM panel driver for dumb panels that need at most a regulator and
+	  DRM panel driver for dumb eDP panels that need at most a regulator and
 	  a GPIO to be powered up. Optionally a backlight can be attached so
 	  that it can be automatically turned off when the panel goes into a
 	  low power state.

drivers/gpu/drm/panel/Makefile

@@ -7,6 +7,7 @@ obj-$(CONFIG_DRM_PANEL_BOE_TV101WUM_NL6) += panel-boe-tv101wum-nl6.o
 obj-$(CONFIG_DRM_PANEL_DSI_CM) += panel-dsi-cm.o
 obj-$(CONFIG_DRM_PANEL_LVDS) += panel-lvds.o
 obj-$(CONFIG_DRM_PANEL_SIMPLE) += panel-simple.o
+obj-$(CONFIG_DRM_PANEL_EDP) += panel-edp.o
 obj-$(CONFIG_DRM_PANEL_ELIDA_KD35T133) += panel-elida-kd35t133.o
 obj-$(CONFIG_DRM_PANEL_FEIXIN_K101_IM2BA02) += panel-feixin-k101-im2ba02.o
 obj-$(CONFIG_DRM_PANEL_FEIYANG_FY07024DI26A30D) += panel-feiyang-fy07024di26a30d.o

drivers/gpu/drm/panfrost/panfrost_device.c

@@ -398,8 +398,7 @@ void panfrost_device_reset(struct panfrost_device *pfdev)
 #ifdef CONFIG_PM
 int panfrost_device_resume(struct device *dev)
 {
-	struct platform_device *pdev = to_platform_device(dev);
+	struct panfrost_device *pfdev = dev_get_drvdata(dev);
-	struct panfrost_device *pfdev = platform_get_drvdata(pdev);
 
 	panfrost_device_reset(pfdev);
 	panfrost_devfreq_resume(pfdev);
@@ -409,8 +408,7 @@ int panfrost_device_resume(struct device *dev)
 
 int panfrost_device_suspend(struct device *dev)
 {
-	struct platform_device *pdev = to_platform_device(dev);
+	struct panfrost_device *pfdev = dev_get_drvdata(dev);
-	struct panfrost_device *pfdev = platform_get_drvdata(pdev);
 
 	if (!panfrost_job_is_idle(pfdev))
 		return -EBUSY;

drivers/gpu/drm/panfrost/panfrost_drv.c

@@ -638,8 +638,8 @@ static const struct panfrost_compatible amlogic_data = {
 	.vendor_quirk = panfrost_gpu_amlogic_quirk,
 };
 
-const char * const mediatek_mt8183_supplies[] = { "mali", "sram" };
+static const char * const mediatek_mt8183_supplies[] = { "mali", "sram" };
-const char * const mediatek_mt8183_pm_domains[] = { "core0", "core1", "core2" };
+static const char * const mediatek_mt8183_pm_domains[] = { "core0", "core1", "core2" };
 static const struct panfrost_compatible mediatek_mt8183_data = {
 	.num_supplies = ARRAY_SIZE(mediatek_mt8183_supplies),
 	.supply_names = mediatek_mt8183_supplies,

drivers/gpu/drm/panfrost/panfrost_mmu.c

@@ -58,17 +58,33 @@ static int write_cmd(struct panfrost_device *pfdev, u32 as_nr, u32 cmd)
 }
 
 static void lock_region(struct panfrost_device *pfdev, u32 as_nr,
-			u64 iova, u64 size)
+			u64 region_start, u64 size)
 {
 	u8 region_width;
-	u64 region = iova & PAGE_MASK;
+	u64 region;
+	u64 region_end = region_start + size;
 
-	/* The size is encoded as ceil(log2) minus(1), which may be calculated
+	if (!size)
-	 * with fls. The size must be clamped to hardware bounds.
+		return;
+
+	/*
+	 * The locked region is a naturally aligned power of 2 block encoded as
+	 * log2 minus(1).
+	 * Calculate the desired start/end and look for the highest bit which
+	 * differs. The smallest naturally aligned block must include this bit
+	 * change, the desired region starts with this bit (and subsequent bits)
+	 * zeroed and ends with the bit (and subsequent bits) set to one.
 	 */
-	size = max_t(u64, size, AS_LOCK_REGION_MIN_SIZE);
+	region_width = max(fls64(region_start ^ (region_end - 1)),
-	region_width = fls64(size - 1) - 1;
+			   const_ilog2(AS_LOCK_REGION_MIN_SIZE)) - 1;
-	region |= region_width;
+
+	/*
+	 * Mask off the low bits of region_start (which would be ignored by
+	 * the hardware anyway)
+	 */
+	region_start &= GENMASK_ULL(63, region_width);
+
+	region = region_width | region_start;
 
 	/* Lock the region that needs to be updated */
 	mmu_write(pfdev, AS_LOCKADDR_LO(as_nr), lower_32_bits(region));

drivers/gpu/drm/rockchip/analogix_dp-rockchip.c

@@ -467,6 +467,6 @@ struct platform_driver rockchip_dp_driver = {
 	.driver = {
 		   .name = "rockchip-dp",
 		   .pm = &rockchip_dp_pm_ops,
-		   .of_match_table = of_match_ptr(rockchip_dp_dt_ids),
+		   .of_match_table = rockchip_dp_dt_ids,
 	},
 };

drivers/gpu/drm/rockchip/cdn-dp-core.c

@@ -697,7 +697,6 @@ static int cdn_dp_parse_dt(struct cdn_dp_device *dp)
 	struct device *dev = dp->dev;
 	struct device_node *np = dev->of_node;
 	struct platform_device *pdev = to_platform_device(dev);
-	struct resource *res;
 
 	dp->grf = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
 	if (IS_ERR(dp->grf)) {
@@ -705,8 +704,7 @@ static int cdn_dp_parse_dt(struct cdn_dp_device *dp)
 		return PTR_ERR(dp->grf);
 	}
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	dp->regs = devm_platform_ioremap_resource(pdev, 0);
-	dp->regs = devm_ioremap_resource(dev, res);
 	if (IS_ERR(dp->regs)) {
 		DRM_DEV_ERROR(dev, "ioremap reg failed\n");
 		return PTR_ERR(dp->regs);

drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c

@@ -14,7 +14,6 @@
 #include <linux/of_device.h>
 #include <linux/phy/phy.h>
 #include <linux/pm_runtime.h>
-#include <linux/phy/phy.h>
 #include <linux/regmap.h>
 
 #include <video/mipi_display.h>
@@ -643,7 +642,7 @@ struct hstt {
 }
 
 /* Table A-3 High-Speed Transition Times */
-struct hstt hstt_table[] = {
+static struct hstt hstt_table[] = {
 	HSTT(  90,  32, 20,  26, 13),
 	HSTT( 100,  35, 23,  28, 14),
 	HSTT( 110,  32, 22,  26, 13),

drivers/gpu/drm/rockchip/inno_hdmi.c

@@ -810,7 +810,6 @@ static int inno_hdmi_bind(struct device *dev, struct device *master,
 	struct platform_device *pdev = to_platform_device(dev);
 	struct drm_device *drm = data;
 	struct inno_hdmi *hdmi;
-	struct resource *iores;
 	int irq;
 	int ret;
 
@@ -821,8 +820,7 @@ static int inno_hdmi_bind(struct device *dev, struct device *master,
 	hdmi->dev = dev;
 	hdmi->drm_dev = drm;
 
-	iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	hdmi->regs = devm_platform_ioremap_resource(pdev, 0);
-	hdmi->regs = devm_ioremap_resource(dev, iores);
 	if (IS_ERR(hdmi->regs))
 		return PTR_ERR(hdmi->regs);
 

drivers/gpu/drm/rockchip/rockchip_drm_drv.c

@@ -138,9 +138,6 @@ static int rockchip_drm_bind(struct device *dev)
 
 	drm_dev->dev_private = private;
 
-	INIT_LIST_HEAD(&private->psr_list);
-	mutex_init(&private->psr_list_lock);
-
 	ret = rockchip_drm_init_iommu(drm_dev);
 	if (ret)
 		goto err_free;
@@ -275,10 +272,17 @@ int rockchip_drm_endpoint_is_subdriver(struct device_node *ep)
 		return -ENODEV;
 
 	/* status disabled will prevent creation of platform-devices */
+	if (!of_device_is_available(node)) {
+		of_node_put(node);
+		return -ENODEV;
+	}
+
 	pdev = of_find_device_by_node(node);
 	of_node_put(node);
+
+	/* enabled non-platform-devices can immediately return here */
 	if (!pdev)
-		return -ENODEV;
+		return false;
 
 	/*
 	 * All rockchip subdrivers have probed at this point, so
@@ -370,7 +374,7 @@ static int rockchip_drm_platform_of_probe(struct device *dev)
 		}
 
 		iommu = of_parse_phandle(port->parent, "iommus", 0);
-		if (!iommu || !of_device_is_available(iommu->parent)) {
+		if (!iommu || !of_device_is_available(iommu)) {
 			DRM_DEV_DEBUG(dev,
 				      "no iommu attached for %pOF, using non-iommu buffers\n",
 				      port->parent);

drivers/gpu/drm/rockchip/rockchip_drm_drv.h

@@ -48,8 +48,6 @@ struct rockchip_drm_private {
 	struct iommu_domain *domain;
 	struct mutex mm_lock;
 	struct drm_mm mm;
-	struct list_head psr_list;
-	struct mutex psr_list_lock;
 };
 
 int rockchip_drm_dma_attach_device(struct drm_device *drm_dev,

drivers/gpu/drm/rockchip/rockchip_lvds.c

@@ -19,6 +19,7 @@
 
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_bridge.h>
+#include <drm/drm_bridge_connector.h>
 #include <drm/drm_dp_helper.h>
 #include <drm/drm_of.h>
 #include <drm/drm_panel.h>
@@ -439,11 +440,9 @@ struct drm_encoder_helper_funcs px30_lvds_encoder_helper_funcs = {
 static int rk3288_lvds_probe(struct platform_device *pdev,
 			     struct rockchip_lvds *lvds)
 {
-	struct resource *res;
 	int ret;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	lvds->regs = devm_platform_ioremap_resource(pdev, 0);
-	lvds->regs = devm_ioremap_resource(lvds->dev, res);
 	if (IS_ERR(lvds->regs))
 		return PTR_ERR(lvds->regs);
 
@@ -612,9 +611,9 @@ static int rockchip_lvds_bind(struct device *dev, struct device *master,
 	}
 
 	drm_encoder_helper_add(encoder, lvds->soc_data->helper_funcs);
+	connector = &lvds->connector;
 
 	if (lvds->panel) {
-		connector = &lvds->connector;
 		connector->dpms = DRM_MODE_DPMS_OFF;
 		ret = drm_connector_init(drm_dev, connector,
 					 &rockchip_lvds_connector_funcs,
@@ -627,17 +626,27 @@ static int rockchip_lvds_bind(struct device *dev, struct device *master,
 
 		drm_connector_helper_add(connector,
 					 &rockchip_lvds_connector_helper_funcs);
-
-		ret = drm_connector_attach_encoder(connector, encoder);
-		if (ret < 0) {
-			DRM_DEV_ERROR(drm_dev->dev,
-				      "failed to attach encoder: %d\n", ret);
-			goto err_free_connector;
-		}
 	} else {
-		ret = drm_bridge_attach(encoder, lvds->bridge, NULL, 0);
+		ret = drm_bridge_attach(encoder, lvds->bridge, NULL,
+					DRM_BRIDGE_ATTACH_NO_CONNECTOR);
 		if (ret)
 			goto err_free_encoder;
+
+		connector = drm_bridge_connector_init(lvds->drm_dev, encoder);
+		if (IS_ERR(connector)) {
+			DRM_DEV_ERROR(drm_dev->dev,
+				      "failed to initialize bridge connector: %pe\n",
+				      connector);
+			ret = PTR_ERR(connector);
+			goto err_free_encoder;
+		}
+	}
+
+	ret = drm_connector_attach_encoder(connector, encoder);
+	if (ret < 0) {
+		DRM_DEV_ERROR(drm_dev->dev,
+			      "failed to attach encoder: %d\n", ret);
+		goto err_free_connector;
 	}
 
 	pm_runtime_enable(dev);

drivers/gpu/drm/rockchip/rockchip_rgb.c

@@ -10,6 +10,7 @@
 
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_bridge.h>
+#include <drm/drm_bridge_connector.h>
 #include <drm/drm_dp_helper.h>
 #include <drm/drm_of.h>
 #include <drm/drm_panel.h>
@@ -27,6 +28,7 @@ struct rockchip_rgb {
 	struct drm_device *drm_dev;
 	struct drm_bridge *bridge;
 	struct drm_encoder encoder;
+	struct drm_connector connector;
 	int output_mode;
 };
 
@@ -80,6 +82,7 @@ struct rockchip_rgb *rockchip_rgb_init(struct device *dev,
 	int ret = 0, child_count = 0;
 	struct drm_panel *panel;
 	struct drm_bridge *bridge;
+	struct drm_connector *connector;
 
 	rgb = devm_kzalloc(dev, sizeof(*rgb), GFP_KERNEL);
 	if (!rgb)
@@ -142,12 +145,32 @@ struct rockchip_rgb *rockchip_rgb_init(struct device *dev,
 
 	rgb->bridge = bridge;
 
-	ret = drm_bridge_attach(encoder, rgb->bridge, NULL, 0);
+	ret = drm_bridge_attach(encoder, rgb->bridge, NULL,
+				DRM_BRIDGE_ATTACH_NO_CONNECTOR);
 	if (ret)
 		goto err_free_encoder;
 
+	connector = &rgb->connector;
+	connector = drm_bridge_connector_init(rgb->drm_dev, encoder);
+	if (IS_ERR(connector)) {
+		DRM_DEV_ERROR(drm_dev->dev,
+			      "failed to initialize bridge connector: %pe\n",
+			      connector);
+		ret = PTR_ERR(connector);
+		goto err_free_encoder;
+	}
+
+	ret = drm_connector_attach_encoder(connector, encoder);
+	if (ret < 0) {
+		DRM_DEV_ERROR(drm_dev->dev,
+			      "failed to attach encoder: %d\n", ret);
+		goto err_free_connector;
+	}
+
 	return rgb;
 
+err_free_connector:
+	drm_connector_cleanup(connector);
 err_free_encoder:
 	drm_encoder_cleanup(encoder);
 	return ERR_PTR(ret);
@@ -157,6 +180,7 @@ EXPORT_SYMBOL_GPL(rockchip_rgb_init);
 void rockchip_rgb_fini(struct rockchip_rgb *rgb)
 {
 	drm_panel_bridge_remove(rgb->bridge);
+	drm_connector_cleanup(&rgb->connector);
 	drm_encoder_cleanup(&rgb->encoder);
 }
 EXPORT_SYMBOL_GPL(rockchip_rgb_fini);

drivers/gpu/drm/rockchip/rockchip_vop_reg.c

@@ -1124,6 +1124,6 @@ struct platform_driver vop_platform_driver = {
 	.remove = vop_remove,
 	.driver = {
 		.name = "rockchip-vop",
-		.of_match_table = of_match_ptr(vop_driver_dt_match),
+		.of_match_table = vop_driver_dt_match,
 	},
 };

drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c

@@ -1126,10 +1126,9 @@ static int sun6i_dsi_probe(struct platform_device *pdev)
 	}
 
 	dsi->regulator = devm_regulator_get(dev, "vcc-dsi");
-	if (IS_ERR(dsi->regulator)) {
+	if (IS_ERR(dsi->regulator))
-		dev_err(dev, "Couldn't get VCC-DSI supply\n");
+		return dev_err_probe(dev, PTR_ERR(dsi->regulator),
-		return PTR_ERR(dsi->regulator);
+				     "Couldn't get VCC-DSI supply\n");
-	}
 
 	dsi->reset = devm_reset_control_get_shared(dev, NULL);
 	if (IS_ERR(dsi->reset)) {
@@ -1144,10 +1143,9 @@ static int sun6i_dsi_probe(struct platform_device *pdev)
 	}
 
 	dsi->bus_clk = devm_clk_get(dev, bus_clk_name);
-	if (IS_ERR(dsi->bus_clk)) {
+	if (IS_ERR(dsi->bus_clk))
-		dev_err(dev, "Couldn't get the DSI bus clock\n");
+		return dev_err_probe(dev, PTR_ERR(dsi->bus_clk),
-		return PTR_ERR(dsi->bus_clk);
+				     "Couldn't get the DSI bus clock\n");
-	}
 
 	ret = regmap_mmio_attach_clk(dsi->regs, dsi->bus_clk);
 	if (ret)

drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c

@@ -153,22 +153,19 @@ static int sun8i_dw_hdmi_bind(struct device *dev, struct device *master,
 		return -EPROBE_DEFER;
 
 	hdmi->rst_ctrl = devm_reset_control_get(dev, "ctrl");
-	if (IS_ERR(hdmi->rst_ctrl)) {
+	if (IS_ERR(hdmi->rst_ctrl))
-		dev_err(dev, "Could not get ctrl reset control\n");
+		return dev_err_probe(dev, PTR_ERR(hdmi->rst_ctrl),
-		return PTR_ERR(hdmi->rst_ctrl);
+				     "Could not get ctrl reset control\n");
-	}
 
 	hdmi->clk_tmds = devm_clk_get(dev, "tmds");
-	if (IS_ERR(hdmi->clk_tmds)) {
+	if (IS_ERR(hdmi->clk_tmds))
-		dev_err(dev, "Couldn't get the tmds clock\n");
+		return dev_err_probe(dev, PTR_ERR(hdmi->clk_tmds),
-		return PTR_ERR(hdmi->clk_tmds);
+				     "Couldn't get the tmds clock\n");
-	}
 
 	hdmi->regulator = devm_regulator_get(dev, "hvcc");
-	if (IS_ERR(hdmi->regulator)) {
+	if (IS_ERR(hdmi->regulator))
-		dev_err(dev, "Couldn't get regulator\n");
+		return dev_err_probe(dev, PTR_ERR(hdmi->regulator),
-		return PTR_ERR(hdmi->regulator);
+				     "Couldn't get regulator\n");
-	}
 
 	ret = sun8i_dw_hdmi_find_connector_pdev(dev, &connector_pdev);
 	if (!ret) {

drivers/gpu/drm/v3d/v3d_drv.c

@@ -206,10 +206,7 @@ MODULE_DEVICE_TABLE(of, v3d_of_match);
 static int
 map_regs(struct v3d_dev *v3d, void __iomem **regs, const char *name)
 {
-	struct resource *res =
+	*regs = devm_platform_ioremap_resource_byname(v3d_to_pdev(v3d), name);
-		platform_get_resource_byname(v3d_to_pdev(v3d), IORESOURCE_MEM, name);
-
-	*regs = devm_ioremap_resource(v3d->drm.dev, res);
 	return PTR_ERR_OR_ZERO(*regs);
 }
 

drivers/gpu/drm/v3d/v3d_gem.c

@@ -567,14 +567,14 @@ v3d_submit_cl_ioctl(struct drm_device *dev, void *data,
 	if (args->bcl_start != args->bcl_end) {
 		bin = kcalloc(1, sizeof(*bin), GFP_KERNEL);
 		if (!bin) {
-			v3d_job_put(&render->base);
+			v3d_job_cleanup(&render->base);
 			return -ENOMEM;
 		}
 
 		ret = v3d_job_init(v3d, file_priv, &bin->base,
 				   v3d_job_free, args->in_sync_bcl, V3D_BIN);
 		if (ret) {
-			v3d_job_put(&render->base);
+			v3d_job_cleanup(&render->base);
 			kfree(bin);
 			return ret;
 		}
@@ -716,7 +716,7 @@ v3d_submit_tfu_ioctl(struct drm_device *dev, void *data,
 	job->base.bo = kcalloc(ARRAY_SIZE(args->bo_handles),
 			       sizeof(*job->base.bo), GFP_KERNEL);
 	if (!job->base.bo) {
-		v3d_job_put(&job->base);
+		v3d_job_cleanup(&job->base);
 		return -ENOMEM;
 	}
 
@@ -810,14 +810,13 @@ v3d_submit_csd_ioctl(struct drm_device *dev, void *data,
 
 	clean_job = kcalloc(1, sizeof(*clean_job), GFP_KERNEL);
 	if (!clean_job) {
-		v3d_job_put(&job->base);
+		v3d_job_cleanup(&job->base);
-		kfree(job);
 		return -ENOMEM;
 	}
 
 	ret = v3d_job_init(v3d, file_priv, clean_job, v3d_job_free, 0, V3D_CACHE_CLEAN);
 	if (ret) {
-		v3d_job_put(&job->base);
+		v3d_job_cleanup(&job->base);
 		kfree(clean_job);
 		return ret;
 	}

drivers/gpu/drm/virtio/virtgpu_vq.c

@@ -91,9 +91,7 @@ virtio_gpu_get_vbuf(struct virtio_gpu_device *vgdev,
 {
 	struct virtio_gpu_vbuffer *vbuf;
 
-	vbuf = kmem_cache_zalloc(vgdev->vbufs, GFP_KERNEL);
+	vbuf = kmem_cache_zalloc(vgdev->vbufs, GFP_KERNEL | __GFP_NOFAIL);
-	if (!vbuf)
-		return ERR_PTR(-ENOMEM);
 
 	BUG_ON(size > MAX_INLINE_CMD_SIZE ||
 	       size < sizeof(struct virtio_gpu_ctrl_hdr));
@@ -147,10 +145,6 @@ static void *virtio_gpu_alloc_cmd_resp(struct virtio_gpu_device *vgdev,
 
 	vbuf = virtio_gpu_get_vbuf(vgdev, cmd_size,
 				   resp_size, resp_buf, cb);
-	if (IS_ERR(vbuf)) {
-		*vbuffer_p = NULL;
-		return ERR_CAST(vbuf);
-	}
 	*vbuffer_p = vbuf;
 	return (struct virtio_gpu_command *)vbuf->buf;
 }

include/drm/drm_edid.h

@@ -508,6 +508,50 @@ static inline u8 drm_eld_get_conn_type(const uint8_t *eld)
 	return eld[DRM_ELD_SAD_COUNT_CONN_TYPE] & DRM_ELD_CONN_TYPE_MASK;
 }
 
+/**
+ * drm_edid_encode_panel_id - Encode an ID for matching against drm_edid_get_panel_id()
+ * @vend: 3-character vendor string
+ * @product_id: The 16-bit product ID.
+ *
+ * This is a macro so that it can be calculated at compile time and used
+ * as an initializer.
+ *
+ * For instance:
+ *   drm_edid_encode_panel_id("BOE", 0x2d08) => 0x09e52d08
+ *
+ * Return: a 32-bit ID per panel.
+ */
+#define drm_edid_encode_panel_id(vend, product_id) \
+	((((u32)((vend)[0]) - '@') & 0x1f) << 26 | \
+	 (((u32)((vend)[1]) - '@') & 0x1f) << 21 | \
+	 (((u32)((vend)[2]) - '@') & 0x1f) << 16 | \
+	 ((product_id) & 0xffff))
+
+/**
+ * drm_edid_decode_panel_id - Decode a panel ID from drm_edid_encode_panel_id()
+ * @panel_id: The panel ID to decode.
+ * @vend: A 4-byte buffer to store the 3-letter vendor string plus a '\0'
+ *	  termination
+ * @product_id: The product ID will be returned here.
+ *
+ * For instance, after:
+ *   drm_edid_decode_panel_id(0x09e52d08, vend, &product_id)
+ * These will be true:
+ *   vend[0] = 'B'
+ *   vend[1] = 'O'
+ *   vend[2] = 'E'
+ *   vend[3] = '\0'
+ *   product_id = 0x2d08
+ */
+static inline void drm_edid_decode_panel_id(u32 panel_id, char vend[4], u16 *product_id)
+{
+	*product_id = (u16)(panel_id & 0xffff);
+	vend[0] = '@' + ((panel_id >> 26) & 0x1f);
+	vend[1] = '@' + ((panel_id >> 21) & 0x1f);
+	vend[2] = '@' + ((panel_id >> 16) & 0x1f);
+	vend[3] = '\0';
+}
+
 bool drm_probe_ddc(struct i2c_adapter *adapter);
 struct edid *drm_do_get_edid(struct drm_connector *connector,
 	int (*get_edid_block)(void *data, u8 *buf, unsigned int block,
@@ -515,6 +559,7 @@ struct edid *drm_do_get_edid(struct drm_connector *connector,
 	void *data);
 struct edid *drm_get_edid(struct drm_connector *connector,
 			  struct i2c_adapter *adapter);
+u32 drm_edid_get_panel_id(struct i2c_adapter *adapter);
 struct edid *drm_get_edid_switcheroo(struct drm_connector *connector,
 				     struct i2c_adapter *adapter);
 struct edid *drm_edid_duplicate(const struct edid *edid);