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/*
* 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 applys 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 UART2_BASE:
root = CCM_GetRootMux(CCM, ccmRootUart2);
CCM_GetRootDivider(CCM, ccmRootUart2, &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
******************************************************************************/
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