realtek: rtl839x: support GS1900-48 A1 port LEDs

Add the RTL8231 controlling the port LEDs to the devicetree, so users
can enable them. Using the appropriate link name, the netdev trigger can
be used to reflect the port status. As no hardware port status
offloading is supported, blinking on traffic could result in increased
load due to the numerous LED updates.

Signed-off-by: Sander Vanheule <sander@svanheule.net>

diff --git a/target/linux/realtek/dts/rtl8393_zyxel_gs1900-48-a1.dts b/target/linux/realtek/dts/rtl8393_zyxel_gs1900-48-a1.dts
index 20e55c4338464781d45c375cc5fea68bab09b939..e23402b4d94f8457d847c57c09059d8fd6da6f08 100644 (file)
--- a/target/linux/realtek/dts/rtl8393_zyxel_gs1900-48-a1.dts
+++ b/target/linux/realtek/dts/rtl8393_zyxel_gs1900-48-a1.dts
@@ -2,8 +2,9 @@
 
 #include "rtl839x.dtsi"
 
-#include <dt-bindings/input/input.h>
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
 
 / {
        compatible = "zyxel,gs1900-48-a1", "realtek,rtl8393-soc";
@@ -83,9 +84,101 @@
        };
 };
 
+#define PORT_LED(lan, p, l) \
+       led@p,l { \
+               reg = <p l>; \
+               color = <LED_COLOR_ID_GREEN>; \
+               function = LED_FUNCTION_LAN; \
+               function-enumerator = <lan>; \
+       }
+
 &mdio_aux {
        status = "okay";
 
+       pinctrl-names = "default";
+       pinctrl-0 = <&port_led_offload>;
+
+       port_leds: expander@0 {
+               compatible = "realtek,rtl8231";
+               reg = <0>;
+
+               gpio-controller;
+               #gpio-cells = <2>;
+               gpio-ranges = <&port_leds 0 0 37>;
+
+               led_matrix: led-scan-single {
+                       pins = "gpio0", "gpio1", "gpio2", "gpio3", "gpio4", "gpio5",
+                              "gpio6", "gpio7", "gpio8", "gpio9", "gpio10", "gpio11",
+                              "gpio12", "gpio13", "gpio14", "gpio15", "gpio16", "gpio17",
+                              "gpio18", "gpio19";
+                       function = "led";
+               };
+
+               led-controller {
+                       compatible = "realtek,rtl8231-leds";
+                       #address-cells = <2>;
+                       #size-cells = <0>;
+
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&led_matrix>;
+
+                       realtek,led-scan-mode = "single-color";
+
+                       // RJ45 ports
+                       PORT_LED(1, 0, 0);
+                       PORT_LED(2, 0, 1);
+                       PORT_LED(3, 0, 2);
+                       PORT_LED(4, 1, 0);
+                       PORT_LED(5, 1, 1);
+                       PORT_LED(6, 1, 2);
+                       PORT_LED(7, 2, 0);
+                       PORT_LED(8, 2, 1);
+                       PORT_LED(9, 2, 2);
+                       PORT_LED(10, 3, 0);
+                       PORT_LED(11, 3, 1);
+                       PORT_LED(12, 3, 2);
+                       PORT_LED(13, 4, 0);
+                       PORT_LED(14, 4, 1);
+                       PORT_LED(15, 4, 2);
+                       PORT_LED(16, 5, 0);
+                       PORT_LED(17, 5, 1);
+                       PORT_LED(18, 5, 2);
+                       PORT_LED(19, 6, 0);
+                       PORT_LED(20, 6, 1);
+                       PORT_LED(21, 6, 2);
+                       PORT_LED(22, 7, 0);
+                       PORT_LED(23, 7, 1);
+                       PORT_LED(24, 7, 2);
+                       PORT_LED(25, 8, 0);
+                       PORT_LED(26, 8, 1);
+                       PORT_LED(27, 8, 2);
+                       PORT_LED(28, 9, 0);
+                       PORT_LED(29, 9, 1);
+                       PORT_LED(30, 9, 2);
+                       PORT_LED(31, 10, 0);
+                       PORT_LED(32, 10, 1);
+                       PORT_LED(33, 10, 2);
+                       PORT_LED(34, 11, 0);
+                       PORT_LED(35, 11, 1);
+                       PORT_LED(36, 11, 2);
+                       PORT_LED(37, 12, 0);
+                       PORT_LED(38, 12, 1);
+                       PORT_LED(39, 12, 2);
+                       PORT_LED(40, 13, 0);
+                       PORT_LED(41, 13, 1);
+                       PORT_LED(42, 13, 2);
+                       PORT_LED(43, 14, 0);
+                       PORT_LED(44, 14, 1);
+                       PORT_LED(45, 14, 2);
+                       PORT_LED(46, 15, 0);
+                       PORT_LED(47, 15, 1);
+                       PORT_LED(48, 15, 2);
+                       // SFP ports
+                       PORT_LED(49, 16, 0);
+                       PORT_LED(50, 16, 1);
+               };
+       };
+
        gpio1: expander@3 {
                compatible = "realtek,rtl8231";
                reg = <3>;