cpu/native: Add support for periph_timer_query_freqs

Add support for querying the frequency supported by
`periph_timer`. This allows applications which require
this feature to run on the `native` board.

Signed-off-by: Armin Wolf <W_Armin@gmx.de>

cpu/native/Makefile.features

@@ -18,6 +18,7 @@ FEATURES_PROVIDED += periph_hwrng
 FEATURES_PROVIDED += periph_pm
 FEATURES_PROVIDED += periph_pwm
 FEATURES_PROVIDED += periph_timer_periodic
+FEATURES_PROVIDED += periph_timer_query_freqs
 ifeq ($(OS) $(OS_ARCH),Linux x86_64)
   FEATURES_PROVIDED += rust_target
 endif

cpu/native/include/periph_conf.h

@@ -49,7 +49,8 @@ extern "C" {
  * @name Timer peripheral configuration
  * @{
  */
-#define TIMER_NUMOF        (1U)
+#define TIMER_NUMOF            (1U)
+#define TIMER_CHANNEL_NUMOF    (1U)    /**< Number of timer channels */
 
 /**
  * @brief xtimer configuration

cpu/native/periph/timer.c

@@ -75,6 +75,28 @@ void native_isr_timer(void)
     _callback(_cb_arg, 0);
 }
 
+uword_t timer_query_freqs_numof(tim_t dev)
+{
+    (void)dev;
+
+    assert(TIMER_DEV(dev) < TIMER_NUMOF);
+
+    return 1;
+}
+
+uint32_t timer_query_freqs(tim_t dev, uword_t index)
+{
+    (void)dev;
+
+    assert(TIMER_DEV(dev) < TIMER_NUMOF);
+
+    if (index > 0) {
+        return 0;
+    }
+
+    return NATIVE_TIMER_SPEED;
+}
+
 int timer_init(tim_t dev, uint32_t freq, timer_cb_t cb, void *arg)
 {
     (void)freq;