Glymur-crd: Add display related changes for glymur

Documentation/devicetree/bindings/display/bridge/lontium,lt8713sx.yaml

@@ -0,0 +1,101 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/bridge/lontium,lt8713sx.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Lontium LT8713SX Type-C/DP1.4 to Type-C/DP1.4/HDMI2.0/DP++ bridge-hub
+
+maintainers:
+  - Tony <syyang@lontium.com>
+
+description:
+  The Lontium LT8713SX is a Type-C/DP1.4 to Type-C/DP1.4/HDMI2.0 converter
+  that integrates one DP input and up to three configurable output interfaces
+  (DP1.4 / HDMI2.0 / DP++), with SST/MST functionality and audio support.
+
+properties:
+  compatible:
+    enum:
+      - lontium,lt8713sx
+
+  reg:
+    maxItems: 1
+
+  vcc-supply:
+    description: Regulator for 3.3V vcc.
+
+  vdd-supply:
+    description: Regulator for 1.1V vdd.
+
+  reset-gpios:
+    description: GPIO connected to active low RESET pin.
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/properties/port
+        description:
+          DP port for DP input from soc to bridge chip
+
+      port@1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description:
+          DP port for DP output from bridge
+
+      port@2:
+        $ref: /schemas/graph.yaml#/properties/port
+        description:
+          Additional DP port for DP output from bridge
+
+    required:
+      - port@0
+
+required:
+  - compatible
+  - reg
+  - ports
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        bridge@4f {
+            compatible = "lontium,lt8713sx";
+            reg = <0x4f>;
+            reset-gpios = <&tlmm 6 GPIO_ACTIVE_LOW>;
+
+            ports {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                port@0 {
+                    reg = <0>;
+                    lt8713sx_dp_in: endpoint {
+                        remote-endpoint = <&mdss_dp0_out>;
+                    };
+                };
+
+                port@1 {
+                    reg = <1>;
+                    lt8713sx_dp0_out: endpoint {
+                        remote-endpoint = <&dp0_connector_in>;
+                    };
+                };
+
+                port@2 {
+                    reg = <2>;
+                    lt8713sx_dp1_out: endpoint {
+                        remote-endpoint = <&dp1_connector_in>;
+                    };
+                };
+            };
+        };
+    };

Documentation/devicetree/bindings/display/bridge/lontium,lt9211.yaml

@@ -4,19 +4,20 @@
 $id: http://devicetree.org/schemas/display/bridge/lontium,lt9211.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Lontium LT9211 DSI/LVDS/DPI to DSI/LVDS/DPI bridge.
+title: Lontium LT9211/LT9211C DSI/LVDS/DPI to DSI/LVDS/DPI bridge.
 
 maintainers:
   - Marek Vasut <marex@denx.de>
 
 description: |
-  The LT9211 are bridge devices which convert Single/Dual-Link DSI/LVDS
+  The LT9211 and LT9211C are bridge devices which convert Single/Dual-Link DSI/LVDS
   or Single DPI to Single/Dual-Link DSI/LVDS or Single DPI.
 
 properties:
   compatible:
     enum:
       - lontium,lt9211
+      - lontium,lt9211c
 
   reg:
     maxItems: 1
@@ -91,6 +92,43 @@ examples:
 
         vccio-supply = <&lt9211_1v8>;
 
+        ports {
+          #address-cells = <1>;
+          #size-cells = <0>;
+
+          port@0 {
+            reg = <0>;
+
+            endpoint {
+              remote-endpoint = <&dsi0_out>;
+            };
+          };
+
+          port@2 {
+            reg = <2>;
+
+            endpoint {
+              remote-endpoint = <&panel_in_lvds>;
+            };
+          };
+        };
+      };
+    };
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      lvds-bridge@3b {
+        compatible = "lontium,lt9211c";
+        reg = <0x3b>;
+
+        reset-gpios = <&tlmm 128 GPIO_ACTIVE_HIGH>;
+
+        vccio-supply = <&lt9211c_1v8>;
+
         ports {
           #address-cells = <1>;
           #size-cells = <0>;

Documentation/devicetree/bindings/display/msm/qcom,sa8775p-mdss.yaml

@@ -200,9 +200,11 @@ examples:
                   <0x0aec2000 0x1c8>;
 
             clocks = <&dispcc0 MDSS_DISP_CC_MDSS_DPTX0_AUX_CLK>,
-                     <&dispcc0 MDSS_DISP_CC_MDSS_AHB_CLK>;
+                     <&dispcc0 MDSS_DISP_CC_MDSS_AHB_CLK>,
+                     <&gcc GCC_EDP_REF_CLKREF_EN>;
             clock-names = "aux",
-                          "cfg_ahb";
+                          "cfg_ahb",
+                          "ref";
 
             #clock-cells = <1>;
             #phy-cells = <0>;

Documentation/devicetree/bindings/phy/qcom,edp-phy.yaml

@@ -74,6 +74,7 @@ allOf:
         compatible:
           enum:
             - qcom,glymur-dp-phy
+            - qcom,sa8775p-edp-phy
             - qcom,x1e80100-dp-phy
     then:
       properties:

drivers/gpu/drm/bridge/Kconfig

@@ -191,6 +191,16 @@ config DRM_LONTIUM_LT9611UXC
 	  HDMI signals
 	  Please say Y if you have such hardware.
 
+config DRM_LONTIUM_LT8713SX
+	tristate "Lontium LT8713SX DP MST bridge"
+	depends on OF
+	select REGMAP_I2C
+	help
+	  Driver for Lontium LT8713SX DP MST bridge
+	  chip firmware upgrade, which converts Type-C/DP1.4
+	  to 3 configurable Type-C/DP1.4/HDMI2.0 outputs
+	  Please say Y if you have such hardware.
+
 config DRM_ITE_IT66121
 	tristate "ITE IT66121 HDMI bridge"
 	depends on OF

drivers/gpu/drm/bridge/Makefile

@@ -17,6 +17,7 @@ obj-$(CONFIG_DRM_LONTIUM_LT8912B) += lontium-lt8912b.o
 obj-$(CONFIG_DRM_LONTIUM_LT9211) += lontium-lt9211.o
 obj-$(CONFIG_DRM_LONTIUM_LT9611) += lontium-lt9611.o
 obj-$(CONFIG_DRM_LONTIUM_LT9611UXC) += lontium-lt9611uxc.o
+obj-$(CONFIG_DRM_LONTIUM_LT8713SX) += lontium-lt8713sx.o
 obj-$(CONFIG_DRM_LVDS_CODEC) += lvds-codec.o
 obj-$(CONFIG_DRM_MEGACHIPS_STDPXXXX_GE_B850V3_FW) += megachips-stdpxxxx-ge-b850v3-fw.o
 obj-$(CONFIG_DRM_MICROCHIP_LVDS_SERIALIZER) += microchip-lvds.o

drivers/gpu/drm/bridge/display-connector.c

@@ -12,6 +12,7 @@
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/consumer.h>
+#include <linux/workqueue.h>
 
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_bridge.h>
@@ -25,6 +26,8 @@ struct display_connector {
 
 	struct regulator	*supply;
 	struct gpio_desc	*ddc_en;
+
+	struct work_struct	hpd_work;
 };
 
 static inline struct display_connector *
@@ -87,6 +90,34 @@ display_connector_bridge_detect(struct drm_bridge *bridge, struct drm_connector
 	return display_connector_detect(bridge);
 }
 
+static void display_connector_hpd_enable(struct drm_bridge *bridge)
+{
+	struct display_connector *conn = to_display_connector(bridge);
+
+	enable_irq(conn->hpd_irq);
+
+	if (conn->bridge.type == DRM_MODE_CONNECTOR_DisplayPort)
+		schedule_work(&conn->hpd_work);
+}
+
+static void display_connector_hpd_disable(struct drm_bridge *bridge)
+{
+	struct display_connector *conn = to_display_connector(bridge);
+
+	if (conn->bridge.type == DRM_MODE_CONNECTOR_DisplayPort)
+		cancel_work_sync(&conn->hpd_work);
+
+	disable_irq(conn->hpd_irq);
+}
+
+static void display_connector_hpd_work(struct work_struct *work)
+{
+	struct display_connector *conn = container_of(work, struct display_connector, hpd_work);
+	struct drm_bridge *bridge = &conn->bridge;
+
+	drm_bridge_hpd_notify(bridge, display_connector_detect(bridge));
+}
+
 static const struct drm_edid *display_connector_edid_read(struct drm_bridge *bridge,
 							  struct drm_connector *connector)
 {
@@ -178,6 +209,8 @@ static u32 *display_connector_get_input_bus_fmts(struct drm_bridge *bridge,
 static const struct drm_bridge_funcs display_connector_bridge_funcs = {
 	.attach = display_connector_attach,
 	.detect = display_connector_bridge_detect,
+	.hpd_enable = display_connector_hpd_enable,
+	.hpd_disable = display_connector_hpd_disable,
 	.edid_read = display_connector_edid_read,
 	.atomic_get_output_bus_fmts = display_connector_get_output_bus_fmts,
 	.atomic_get_input_bus_fmts = display_connector_get_input_bus_fmts,
@@ -307,6 +340,7 @@ static int display_connector_probe(struct platform_device *pdev)
 						NULL, display_connector_hpd_irq,
 						IRQF_TRIGGER_RISING |
 						IRQF_TRIGGER_FALLING |
+						IRQF_NO_AUTOEN |
 						IRQF_ONESHOT,
 						"HPD", conn);
 		if (ret) {
@@ -378,6 +412,8 @@ static int display_connector_probe(struct platform_device *pdev)
 		conn->bridge.ops |= DRM_BRIDGE_OP_DETECT;
 	if (conn->hpd_irq >= 0)
 		conn->bridge.ops |= DRM_BRIDGE_OP_HPD;
+	if (conn->hpd_irq >= 0 && type == DRM_MODE_CONNECTOR_DisplayPort)
+		INIT_WORK(&conn->hpd_work, display_connector_hpd_work);
 
 	dev_dbg(&pdev->dev,
 		"Found %s display connector '%s' %s DDC bus and %s HPD GPIO (ops 0x%x)\n",