arm64: dts: qcom: msm8916-longcheer-l8910 + msm8939-longcheer-l9100: Add rear flash

Documentation/devicetree/bindings/leds/silergy,sy7802.yaml

@@ -0,0 +1,100 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/silergy,sy7802.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Silergy SY7802 1800mA Boost Charge Pump LED Driver
+
+maintainers:
+  - André Apitzsch <git@apitzsch.eu>
+
+description: |
+  The SY7802 is a current-regulated charge pump which can regulate two current
+  levels for Flash and Torch modes.
+
+  The SY7802 is a high-current synchronous boost converter with 2-channel
+  high side current sources. Each channel is able to deliver 900mA current.
+
+properties:
+  compatible:
+    enum:
+      - silergy,sy7802
+
+  reg:
+    maxItems: 1
+
+  enable-gpios:
+    maxItems: 1
+    description: A connection to the 'EN' pin.
+
+  flash-gpios:
+    maxItems: 1
+    description: A connection to the 'FLEN' pin.
+
+  vin-supply:
+    description: Regulator providing power to the 'VIN' pin.
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
+patternProperties:
+  "^led@[0-1]$":
+    type: object
+    $ref: common.yaml#
+    unevaluatedProperties: false
+
+    properties:
+      reg:
+        description: Index of the LED.
+        minimum: 0
+        maximum: 1
+
+      led-sources:
+        minItems: 1
+        maxItems: 2
+        items:
+          minimum: 0
+          maximum: 1
+
+    required:
+      - reg
+      - led-sources
+
+required:
+  - compatible
+  - reg
+  - "#address-cells"
+  - "#size-cells"
+  - enable-gpios
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/leds/common.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        flash-led-controller@53 {
+            compatible = "silergy,sy7802";
+            reg = <0x53>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            enable-gpios = <&tlmm 16 GPIO_ACTIVE_HIGH>;
+
+            led@0 {
+                reg = <0>;
+                function = LED_FUNCTION_FLASH;
+                color = <LED_COLOR_ID_WHITE>;
+                led-sources = <0>, <1>;
+            };
+        };
+    };

arch/arm64/boot/dts/qcom/msm8916-longcheer-l8910.dts

@@ -148,6 +148,25 @@
 			};
 		};
 	};
+
+	flash-led-controller@53 {
+		compatible = "silergy,sy7802";
+		reg = <0x53>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		enable-gpios = <&tlmm 16 GPIO_ACTIVE_HIGH>;
+
+		pinctrl-0 = <&camera_rear_flash_default>;
+		pinctrl-names = "default";
+
+		led@0 {
+			reg = <0>;
+			function = LED_FUNCTION_FLASH;
+			color = <LED_COLOR_ID_WHITE>;
+			led-sources = <0>, <1>;
+		};
+	};
 };
 
 &blsp_i2c3 {
@@ -420,6 +439,13 @@
 		bias-disable;
 	};
 
+	camera_rear_flash_default: camera-rear-flash-default-state {
+		pins = "gpio9", "gpio16", "gpio117";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	gpio_keys_default: gpio-keys-default-state {
 		pins = "gpio107";
 		function = "gpio";

arch/arm64/boot/dts/qcom/msm8939-longcheer-l9100.dts

@@ -160,6 +160,25 @@
 			};
 		};
 	};
+
+	flash-led-controller@53 {
+		compatible = "silergy,sy7802";
+		reg = <0x53>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		enable-gpios = <&tlmm 16 GPIO_ACTIVE_HIGH>;
+
+		pinctrl-0 = <&camera_rear_flash_default>;
+		pinctrl-names = "default";
+
+		led@0 {
+			reg = <0>;
+			function = LED_FUNCTION_FLASH;
+			color = <LED_COLOR_ID_WHITE>;
+			led-sources = <0>, <1>;
+		};
+	};
 };
 
 &blsp_i2c3 {
@@ -420,6 +439,13 @@
 		bias-disable;
 	};
 
+	camera_rear_flash_default: camera-rear-flash-default-state {
+		pins = "gpio9", "gpio16", "gpio51";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	gpio_hall_sensor_default: gpio-hall-sensor-default-state {
 		pins = "gpio20";
 		function = "gpio";

drivers/leds/flash/Kconfig

@@ -121,4 +121,15 @@ config LEDS_SGM3140
 	  This option enables support for the SGM3140 500mA Buck/Boost Charge
 	  Pump LED Driver.
 
+config LEDS_SY7802
+	tristate "LED support for the Silergy SY7802"
+	depends on I2C && OF
+	depends on GPIOLIB
+	select REGMAP_I2C
+	help
+	  This option enables support for the SY7802 flash LED controller.
+	  SY7802 includes torch and flash functions with programmable current.
+
+	  This driver can be built as a module, it will be called "leds-sy7802".
+
 endif # LEDS_CLASS_FLASH

drivers/leds/flash/Makefile

@@ -11,3 +11,4 @@ obj-$(CONFIG_LEDS_QCOM_FLASH)	+= leds-qcom-flash.o
 obj-$(CONFIG_LEDS_RT4505)	+= leds-rt4505.o
 obj-$(CONFIG_LEDS_RT8515)	+= leds-rt8515.o
 obj-$(CONFIG_LEDS_SGM3140)	+= leds-sgm3140.o
+obj-$(CONFIG_LEDS_SY7802)	+= leds-sy7802.o