ext/hal/nxp/imx/devices/MCIMX7D/clock_freq.c

/*
 * Copyright (c) 2015, Freescale Semiconductor, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * o Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 *
 * o Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * o Neither the name of Freescale Semiconductor, Inc. nor the names of its
 *   contributors may be used to endorse or promote products derived from this
 *   software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "clock_freq.h"
#include "ccm_imx7d.h"
#include "ccm_analog_imx7d.h"

/*FUNCTION**********************************************************************
 *
 * Function Name : get_gpt_clock_freq
 * Description   : Get clock frequency applies to the GPT module
 *
 *END**************************************************************************/
uint32_t get_gpt_clock_freq(GPT_Type *base)
{
	uint32_t root;
	uint32_t hz;
	uint32_t pre, post;

	switch ((uint32_t)base) {
	case GPT3_BASE:
		root = CCM_GetRootMux(CCM, ccmRootGpt3);
		CCM_GetRootDivider(CCM, ccmRootGpt3, &pre, &post);
		break;
	case GPT4_BASE:
		root = CCM_GetRootMux(CCM, ccmRootGpt4);
		CCM_GetRootDivider(CCM, ccmRootGpt4, &pre, &post);
		break;
	default:
		return 0;
	}

	switch (root) {
	case ccmRootmuxGptOsc24m:
		hz = 24000000;
		break;
	case ccmRootmuxGptSysPllPfd0:
		hz = CCM_ANALOG_GetPfdFreq(CCM_ANALOG, ccmAnalogPfd0Frac);
		break;
	default:
		return 0;
	}

	return hz / (pre + 1) / (post + 1);
}

/*FUNCTION**********************************************************************
 *
 * Function Name : get_ecspi_clock_freq
 * Description   : Get clock frequency applys to the ECSPI module
 *
 *END**************************************************************************/
uint32_t get_ecspi_clock_freq(ECSPI_Type *base)
{
	uint32_t root;
	uint32_t hz;
	uint32_t pre, post;

	switch ((uint32_t)base) {
	case ECSPI1_BASE:
		root = CCM_GetRootMux(CCM, ccmRootEcspi1);
		CCM_GetRootDivider(CCM, ccmRootEcspi1, &pre, &post);
		break;
	case ECSPI2_BASE:
		root = CCM_GetRootMux(CCM, ccmRootEcspi2);
		CCM_GetRootDivider(CCM, ccmRootEcspi2, &pre, &post);
		break;
	default:
		return 0;
	}

	switch (root) {
	case ccmRootmuxEcspiOsc24m:
		hz = 24000000;
		break;
	case ccmRootmuxEcspiSysPllPfd4:
		hz = CCM_ANALOG_GetPfdFreq(CCM_ANALOG, ccmAnalogPfd4Frac);
		break;
	default:
		return 0;
	}

	return hz / (pre + 1) / (post + 1);
}

/*FUNCTION**********************************************************************
 *
 * Function Name : get_flexcan_clock_freq
 * Description   : Get clock frequency applys to the FLEXCAN module
 *
 *END**************************************************************************/
uint32_t get_flexcan_clock_freq(CAN_Type *base)
{
	uint32_t root;
	uint32_t hz;
	uint32_t pre, post;

	switch ((uint32_t)base) {
	case CAN1_BASE:
		root = CCM_GetRootMux(CCM, ccmRootCan1);
		CCM_GetRootDivider(CCM, ccmRootCan1, &pre, &post);
		break;
	case CAN2_BASE:
		root = CCM_GetRootMux(CCM, ccmRootCan2);
		CCM_GetRootDivider(CCM, ccmRootCan2, &pre, &post);
		break;
	default:
		return 0;
	}

	switch (root) {
	case ccmRootmuxCanOsc24m:
		hz = 24000000;
		break;
	case ccmRootmuxCanSysPllDiv4:
		hz = CCM_ANALOG_GetSysPllFreq(CCM_ANALOG) >> 2;
		break;
	case ccmRootmuxCanSysPllDiv1:
		hz = CCM_ANALOG_GetSysPllFreq(CCM_ANALOG);
		break;
	default:
		return 0;
	}

	return hz / (pre + 1) / (post + 1);
}

/*FUNCTION**********************************************************************
 *
 * Function Name : get_I2C_clock_freq
 * Description   : Get clock frequency applys to the I2C module
 *
 *END**************************************************************************/
uint32_t get_i2c_clock_freq(I2C_Type *base)
{
	uint32_t root;
	uint32_t hz;
	uint32_t pre, post;

	switch ((uint32_t)base) {
	case I2C1_BASE:
		root = CCM_GetRootMux(CCM, ccmRootI2c1);
		CCM_GetRootDivider(CCM, ccmRootI2c1, &pre, &post);
		break;
	case I2C2_BASE:
		root = CCM_GetRootMux(CCM, ccmRootI2c2);
		CCM_GetRootDivider(CCM, ccmRootI2c2, &pre, &post);
		break;
	case I2C3_BASE:
		root = CCM_GetRootMux(CCM, ccmRootI2c3);
		CCM_GetRootDivider(CCM, ccmRootI2c3, &pre, &post);
		break;
	case I2C4_BASE:
		root = CCM_GetRootMux(CCM, ccmRootI2c4);
		CCM_GetRootDivider(CCM, ccmRootI2c4, &pre, &post);
		break;
	default:
		return 0;
	}

	switch (root) {
	case ccmRootmuxI2cOsc24m:
		hz = 24000000;
		break;
	case ccmRootmuxI2cSysPllDiv4:
		hz = CCM_ANALOG_GetSysPllFreq(CCM_ANALOG) >> 2;
		break;
	default:
		return 0;
	}

	return hz / (pre + 1) / (post + 1);
}

/*FUNCTION**********************************************************************
 *
 * Function Name : get_uart_clock_freq
 * Description   : Get clock frequency applys to the UART module
 *
 *END**************************************************************************/
uint32_t get_uart_clock_freq(UART_Type *base)
{
	uint32_t root;
	uint32_t hz;
	uint32_t pre, post;

	switch ((uint32_t)base) {
	case UART1_BASE:
		root = CCM_GetRootMux(CCM, ccmRootUart1);
		CCM_GetRootDivider(CCM, ccmRootUart1, &pre, &post);
		break;
	case UART2_BASE:
		root = CCM_GetRootMux(CCM, ccmRootUart2);
		CCM_GetRootDivider(CCM, ccmRootUart2, &pre, &post);
		break;
	case UART3_BASE:
		root = CCM_GetRootMux(CCM, ccmRootUart3);
		CCM_GetRootDivider(CCM, ccmRootUart3, &pre, &post);
		break;
	case UART4_BASE:
		root = CCM_GetRootMux(CCM, ccmRootUart4);
		CCM_GetRootDivider(CCM, ccmRootUart4, &pre, &post);
		break;
	case UART5_BASE:
		root = CCM_GetRootMux(CCM, ccmRootUart5);
		CCM_GetRootDivider(CCM, ccmRootUart5, &pre, &post);
		break;
	case UART6_BASE:
		root = CCM_GetRootMux(CCM, ccmRootUart6);
		CCM_GetRootDivider(CCM, ccmRootUart6, &pre, &post);
		break;
	case UART7_BASE:
		root = CCM_GetRootMux(CCM, ccmRootUart7);
		CCM_GetRootDivider(CCM, ccmRootUart7, &pre, &post);
		break;
	default:
		return 0;
	}

	switch (root) {
	case ccmRootmuxUartOsc24m:
		hz = 24000000;
		break;
	case ccmRootmuxUartSysPllDiv2:
		hz = CCM_ANALOG_GetSysPllFreq(CCM_ANALOG) >> 1;
		break;
	case ccmRootmuxUartSysPllDiv1:
		hz = CCM_ANALOG_GetSysPllFreq(CCM_ANALOG);
		break;
	default:
		return 0;
	}

	return hz / (pre + 1) / (post + 1);
}

/*******************************************************************************
 * EOF
 ******************************************************************************/