drivers: clock_control: nrf2_fll16m: use HAL

HAL function for setting clock source in nrf_lrcconf is now available.

Signed-off-by: Marcin Szymczyk <marcin.szymczyk@nordicsemi.no>

Author: masz-nordic

drivers/clock_control/clock_control_nrf2_fll16m.c

@@ -24,6 +24,10 @@ BUILD_ASSERT(DT_NUM_INST_STATUS_OKAY(DT_DRV_COMPAT) == 1,
 #define FLL16M_MODE_CLOSED_LOOP 1
 #define FLL16M_MODE_BYPASS      2
 #define FLL16M_MODE_DEFAULT     FLL16M_MODE_OPEN_LOOP
+#define FLL16M_MODE_LOOP_MASK   BIT(0)
+
+BUILD_ASSERT(FLL16M_MODE_OPEN_LOOP == NRF_LRCCONF_CLK_SRC_OPEN_LOOP);
+BUILD_ASSERT(FLL16M_MODE_CLOSED_LOOP == NRF_LRCCONF_CLK_SRC_CLOSED_LOOP);
 
 #define FLL16M_HFXO_NODE DT_INST_PHANDLE_BY_NAME(0, clocks, hfxo)
 
@@ -65,13 +69,13 @@ struct fll16m_dev_config {
 
 static void activate_fll16m_mode(struct fll16m_dev_data *dev_data, uint8_t mode)
 {
-	/* TODO: change to nrf_lrcconf_* function when such is available. */
-
 	if (mode != FLL16M_MODE_DEFAULT) {
 		soc_lrcconf_poweron_request(&dev_data->fll16m_node, NRF_LRCCONF_POWER_MAIN);
 	}
 
-	NRF_LRCCONF010->CLKCTRL[0].SRC = mode;
+	nrf_lrcconf_clock_source_set(NRF_LRCCONF010, 0,
+				     (nrf_lrcconf_clk_src_t)(mode & FLL16M_MODE_LOOP_MASK),
+				     (mode == FLL16M_MODE_BYPASS));
 
 	if (mode == FLL16M_MODE_DEFAULT) {
 		soc_lrcconf_poweron_release(&dev_data->fll16m_node, NRF_LRCCONF_POWER_MAIN);