boards/arm/kinetis/freedom-k64f: Add userled support

- Enable userled driver integration for the Freedom-K64F board.
- Verified functionality with the leds example app.

Signed-off-by: trns1997 <trns1997@gmail.com>

boards/arm/kinetis/freedom-k64f/src/freedom-k64f.h

@@ -45,6 +45,11 @@
 #define HAVE_AUTOMOUNTER 1
 #define HAVE_USBDEV      1
 
+#undef HAVE_LEDS
+#if !defined(CONFIG_ARCH_LEDS) && defined(CONFIG_USERLED_LOWER)
+#  define HAVE_LEDS 1
+#endif
+
 #if defined(CONFIG_KINETIS_RTC)
 #define HAVE_RTC_DRIVER  1
 #endif

boards/arm/kinetis/freedom-k64f/src/k64_bringup.c

@@ -38,6 +38,16 @@
 #  include "kinetis_alarm.h"
 #endif
 
+#ifdef CONFIG_USERLED
+#  include <nuttx/leds/userled.h>
+#endif
+
+#ifdef CONFIG_EXAMPLES_LEDS_DEVPATH
+#  define LED_DRIVER_PATH CONFIG_EXAMPLES_LEDS_DEVPATH
+#else
+#  define LED_DRIVER_PATH "/dev/userleds"
+#endif
+
 #include "freedom-k64f.h"
 
 #if defined(CONFIG_BOARDCTL) || defined(CONFIG_BOARD_LATE_INITIALIZE)
@@ -61,6 +71,17 @@ int k64_bringup(void)
   struct rtc_lowerhalf_s *lower;
 #endif
 
+#ifdef HAVE_LEDS
+  /* Register the LED driver */
+
+  ret = userled_lower_initialize(LED_DRIVER_PATH);
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: userled_lower_initialize() failed: %d\n", ret);
+      return ret;
+    }
+#endif
+
 #ifdef HAVE_PROC
   /* Mount the proc filesystem */