Sofle Shield: Add underglow support

Update sofle underglow to zephyr 3

app/boards/shields/sofle/Kconfig.defconfig

@@ -46,4 +46,10 @@ endchoice
 
 endif # LVGL
 
+if ZMK_RGB_UNDERGLOW
+
+config WS2812_STRIP
+    default y
+endif
+
 endif

app/boards/shields/sofle/boards/nice_nano.overlay

@@ -0,0 +1,35 @@
+#include <dt-bindings/led/led.h>
+
+&spi1 {
+   compatible = "nordic,nrf-spim";
+   status = "okay";
+   mosi-pin = <6>;
+   // Unused pins, needed for SPI definition, but not used by the ws2812 driver itself.
+   sck-pin = <5>;
+   miso-pin = <7>;
+
+   led_strip: ws2812@0 {
+      compatible = "worldsemi,ws2812-spi";
+      label = "WS2812";
+
+      /* SPI */
+      reg = <0>; /* ignored, but necessary for SPI bindings */
+      spi-max-frequency = <4000000>;
+
+      /* WS2812 */
+      chain-length = <29>; /* arbitrary; change at will */
+      spi-one-frame = <0x70>;
+      spi-zero-frame = <0x40>;
+      color-mapping = <
+         LED_COLOR_ID_GREEN
+         LED_COLOR_ID_RED
+         LED_COLOR_ID_BLUE
+      >;
+   };
+};
+
+/ {
+   chosen {
+      zmk,underglow = &led_strip;
+   };
+};

app/boards/shields/sofle/boards/nice_nano_v2.overlay

@@ -0,0 +1,35 @@
+#include <dt-bindings/led/led.h>
+
+&spi1 {
+   compatible = "nordic,nrf-spim";
+   status = "okay";
+   mosi-pin = <6>;
+   // Unused pins, needed for SPI definition, but not used by the ws2812 driver itself.
+   sck-pin = <5>;
+   miso-pin = <7>;
+
+   led_strip: ws2812@0 {
+      compatible = "worldsemi,ws2812-spi";
+      label = "WS2812";
+
+      /* SPI */
+      reg = <0>; /* ignored, but necessary for SPI bindings */
+      spi-max-frequency = <4000000>;
+
+      /* WS2812 */
+      chain-length = <29>; /* arbitrary; change at will */
+      spi-one-frame = <0x70>;
+      spi-zero-frame = <0x40>;
+      color-mapping = <
+         LED_COLOR_ID_GREEN
+         LED_COLOR_ID_RED
+         LED_COLOR_ID_BLUE
+      >;
+   };
+};
+
+/ {
+   chosen {
+      zmk,underglow = &led_strip;
+   };
+};

app/boards/shields/sofle/boards/nrfmicro_11.overlay

@@ -0,0 +1,35 @@
+#include <dt-bindings/led/led.h>
+
+&spi1 {
+   compatible = "nordic,nrf-spim";
+   status = "okay";
+   mosi-pin = <6>;
+   // Unused pins, needed for SPI definition, but not used by the ws2812 driver itself.
+   sck-pin = <5>;
+   miso-pin = <7>;
+
+   led_strip: ws2812@0 {
+      compatible = "worldsemi,ws2812-spi";
+      label = "WS2812";
+
+      /* SPI */
+      reg = <0>; /* ignored, but necessary for SPI bindings */
+      spi-max-frequency = <4000000>;
+
+      /* WS2812 */
+      chain-length = <29>; /* arbitrary; change at will */
+      spi-one-frame = <0x70>;
+      spi-zero-frame = <0x40>;
+      color-mapping = <
+         LED_COLOR_ID_GREEN
+         LED_COLOR_ID_RED
+         LED_COLOR_ID_BLUE
+      >;
+   };
+};
+
+/ {
+   chosen {
+      zmk,underglow = &led_strip;
+   };
+};

app/boards/shields/sofle/boards/nrfmicro_13.overlay

@@ -0,0 +1,35 @@
+#include <dt-bindings/led/led.h>
+
+&spi1 {
+   compatible = "nordic,nrf-spim";
+   status = "okay";
+   mosi-pin = <6>;
+   // Unused pins, needed for SPI definition, but not used by the ws2812 driver itself.
+   sck-pin = <5>;
+   miso-pin = <7>;
+
+   led_strip: ws2812@0 {
+      compatible = "worldsemi,ws2812-spi";
+      label = "WS2812";
+
+      /* SPI */
+      reg = <0>; /* ignored, but necessary for SPI bindings */
+      spi-max-frequency = <4000000>;
+
+      /* WS2812 */
+      chain-length = <29>; /* arbitrary; change at will */
+      spi-one-frame = <0x70>;
+      spi-zero-frame = <0x40>;
+      color-mapping = <
+         LED_COLOR_ID_GREEN
+         LED_COLOR_ID_RED
+         LED_COLOR_ID_BLUE
+      >;
+   };
+};
+
+/ {
+   chosen {
+      zmk,underglow = &led_strip;
+   };
+};

app/boards/shields/sofle/sofle.conf

@@ -7,3 +7,11 @@
 # Uncomment these two lines to add support for encoders
 # CONFIG_EC11=y
 # CONFIG_EC11_TRIGGER_GLOBAL_THREAD=y
+
+# Uncomment this line below to add rgb underglow / backlight support
+# CONFIG_ZMK_RGB_UNDERGLOW=y
+
+# Uncomment the line below to disable external power toggling by the underglow.
+# By default toggling the underglow on and off also toggles external power
+# on and off. This also causes the display to turn off.
+# CONFIG_ZMK_RGB_UNDERGLOW_EXT_POWER=n

app/boards/shields/sofle/sofle.zmk.yml

@@ -9,6 +9,7 @@ features:
   - keys
   - display
   - encoder
+  - underglow
 siblings:
   - sofle_left
   - sofle_right