LPC: Move platform specific code out of the analog api file

Signed-off-by: Mahadevan Mahesh <Mahesh.Mahadevan@nxp.com>

targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_LPC54114/TARGET_LPCXpresso/mbed_overrides.c

@@ -15,6 +15,7 @@
  */
 #include "gpio_api.h"
 #include "clock_config.h"
+#include "fsl_power.h"
 
 // called before main
 void mbed_sdk_init()
@@ -31,6 +32,19 @@ void NMI_Handler(void)
     //gpio_init_in(&gpio, PTA4);
 }
 
+void ADC_ClockPower_Configuration(void)
+{
+    /* SYSCON power. */
+    POWER_DisablePD(kPDRUNCFG_PD_ADC0);     /* Power on the ADC converter. */
+    POWER_DisablePD(kPDRUNCFG_PD_VD7_ENA);  /* Power on the analog power supply. */
+    POWER_DisablePD(kPDRUNCFG_PD_VREFP_SW); /* Power on the reference voltage source. */
+    POWER_DisablePD(kPDRUNCFG_PD_TEMPS);    /* Power on the temperature sensor. */
+
+    /* Enable the clock. */
+    CLOCK_AttachClk(kFRO12M_to_MAIN_CLK);
+    CLOCK_EnableClock(kCLOCK_Adc0);
+}
+
 // Enable the RTC oscillator if available on the board
 void rtc_setup_oscillator(void)
 {

targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_LPC54608/TARGET_LPCXpresso/mbed_overrides.c

@@ -16,6 +16,7 @@
 #include "gpio_api.h"
 #include "clock_config.h"
 #include "fsl_emc.h"
+#include "fsl_power.h"
 
 /*******************************************************************************
  * Definitions
@@ -58,6 +59,25 @@ void rtc_setup_oscillator(void)
     SYSCON->RTCOSCCTRL |= SYSCON_RTCOSCCTRL_EN_MASK;
 }
 
+void ADC_ClockPower_Configuration(void)
+{
+    /* SYSCON power. */
+    POWER_DisablePD(kPDRUNCFG_PD_VDDA);    /* Power on VDDA. */
+    POWER_DisablePD(kPDRUNCFG_PD_ADC0);    /* Power on the ADC converter. */
+    POWER_DisablePD(kPDRUNCFG_PD_VD2_ANA); /* Power on the analog power supply. */
+    POWER_DisablePD(kPDRUNCFG_PD_VREFP);   /* Power on the reference voltage source. */
+    POWER_DisablePD(kPDRUNCFG_PD_TS);      /* Power on the temperature sensor. */
+
+    /* Enable the clock. */
+    CLOCK_AttachClk(kFRO12M_to_MAIN_CLK);
+
+    /* CLOCK_AttachClk(kMAIN_CLK_to_ADC_CLK); */
+    /* Sync clock source is not used. Using sync clock source and would be divided by 2.
+     * The divider would be set when configuring the converter.
+     */
+    CLOCK_EnableClock(kCLOCK_Adc0); /* SYSCON->AHBCLKCTRL[0] |= SYSCON_AHBCLKCTRL_ADC0_MASK; */
+}
+
 /* Initialize the external memory. */
 void BOARD_InitSDRAM(void)
 {

targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/api/analogin_api.c

@@ -27,6 +27,7 @@
 
 /* Array of ADC peripheral base address. */
 static ADC_Type *const adc_addrs[] = ADC_BASE_PTRS;
+extern void ADC_ClockPower_Configuration(void);
 
 #define MAX_FADC 6000000
 
@@ -38,15 +39,7 @@ void analogin_init(analogin_t *obj, PinName pin)
     uint32_t instance = obj->adc >> ADC_INSTANCE_SHIFT;
     adc_config_t adc_config;
 
-    /* SYSCON power. */
+    ADC_ClockPower_Configuration();
-    POWER_DisablePD(kPDRUNCFG_PD_ADC0);     /* Power on the ADC converter. */
-    POWER_DisablePD(kPDRUNCFG_PD_VD7_ENA);  /* Power on the analog power supply. */
-    POWER_DisablePD(kPDRUNCFG_PD_VREFP_SW); /* Power on the reference voltage source. */
-    POWER_DisablePD(kPDRUNCFG_PD_TEMPS);    /* Power on the temperature sensor. */
-
-    /* Enable the clock. */
-    CLOCK_AttachClk(kFRO12M_to_MAIN_CLK);
-    CLOCK_EnableClock(kCLOCK_Adc0);
 
     /* Calibration after power up. */
     if (!(ADC_DoSelfCalibration(adc_addrs[instance]))) {