dts: motorola-surnia enable backlight

Enabling backlight support for motorola-surnia.
Can be applied to motorala-ospray and motorola-styx, but not tested.

Signed-off-by: Bogdan Ionescu <[email protected]>

arch/arm64/boot/dts/qcom/msm8916-motorola-surnia.dts

@@ -8,6 +8,8 @@
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/input/input.h>
 #include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/leds/common.h>
+#include <dt-bindings/leds/leds-bd65b60.h>
 
 / {
  model = "Motorola Moto E 2015 LTE (surnia)";
@@ -57,6 +59,31 @@
  pinctrl-1 = <&usb_id_sleep>;
  pinctrl-names = "default", "sleep";
  };
+
+ backlight_dsi: backlight-dsi {
+ compatible = "led-backlight";
+ leds = <&backlight_led>;
+ default-brightness-level = <192>;
+ };
+};
+
+&blsp_i2c1 {
+ status = "okay";
+
+ led_controler@64 {
+ compatible = "rohm,bd65b60";
+ reg = <0x64>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&backlight_reset_default>;
+
+ backlight_led: led {
+ function = LED_FUNCTION_BACKLIGHT;
+ color = <LED_COLOR_ID_WHITE>;
+ rohm,enable-outputs = <BD65B60_ENABLE_LED1>;
+ default-state = "keep";
+ linux,default-trigger = "backlight";
+ };
+ };
 };
 
 &blsp_i2c2 {
@@ -124,7 +151,7 @@
  panel@0 {
  compatible = "motorola,surnia-panel";
  reg = <0>;
-
+ backlight = <&backlight_dsi>;
  power-supply = <&pm8916_l17>;
  reset-gpios = <&msmgpio 78 GPIO_ACTIVE_LOW>;
 
@@ -320,6 +347,14 @@
  bias-pull-up;
  };
 
+ backlight_reset_default: backlight-reset-default-state {
+ pins = "gpio36";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-pull-down;
+ output-high;
+ };
+
  gpio_keys_default: gpio-keys-default-state {
  pins = "gpio107";
  function = "gpio";