208 lines
7.5 KiB
C
208 lines
7.5 KiB
C
/*
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* Copyright (c) 2015, Freescale Semiconductor, Inc.
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* Copyright 2016-2017 NXP
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* o Redistributions of source code must retain the above copyright notice, this list
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* of conditions and the following disclaimer.
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*
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* o Redistributions in binary form must reproduce the above copyright notice, this
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* list of conditions and the following disclaimer in the documentation and/or
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* other materials provided with the distribution.
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*
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* o Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _FSL_XBARA_H_
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#define _FSL_XBARA_H_
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#include "fsl_common.h"
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/*!
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* @addtogroup xbara
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* @{
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*/
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/*******************************************************************************
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* Definitions
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******************************************************************************/
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#define FSL_XBARA_DRIVER_VERSION (MAKE_VERSION(2, 0, 3)) /*!< Version 2.0.3. */
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/* Macros for entire XBARA_SELx register. */
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#define XBARA_SELx(base, output) (*(volatile uint16_t *)((uintptr_t) & (base->SEL0) + ((output) / 2U) * 2U))
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/* Set the XBARA_SELx_SELx field to a new value. */
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#define XBARA_WR_SELx_SELx(base, input, output) \
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(XBARA_SELx((base), (output)) = \
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((XBARA_SELx((base), (output)) & ~(0xFFU << (XBARA_SEL0_SEL1_SHIFT * ((output) % 2U)))) | \
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((input) << (XBARA_SEL0_SEL1_SHIFT * ((output) % 2U)))))
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/*!
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* @brief XBARA active edge for detection
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*/
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typedef enum _xbara_active_edge
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{
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kXBARA_EdgeNone = 0U, /*!< Edge detection status bit never asserts. */
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kXBARA_EdgeRising = 1U, /*!< Edge detection status bit asserts on rising edges. */
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kXBARA_EdgeFalling = 2U, /*!< Edge detection status bit asserts on falling edges. */
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kXBARA_EdgeRisingAndFalling = 3U /*!< Edge detection status bit asserts on rising and falling edges. */
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} xbara_active_edge_t;
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/*!
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* @brief Defines the XBARA DMA and interrupt configurations.
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*/
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typedef enum _xbar_request
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{
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kXBARA_RequestDisable = 0U, /*!< Interrupt and DMA are disabled. */
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kXBARA_RequestDMAEnable = 1U, /*!< DMA enabled, interrupt disabled. */
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kXBARA_RequestInterruptEnalbe = 2U /*!< Interrupt enabled, DMA disabled. */
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} xbara_request_t;
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/*!
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* @brief XBARA status flags.
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*
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* This provides constants for the XBARA status flags for use in the XBARA functions.
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*/
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typedef enum _xbara_status_flag_t
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{
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kXBARA_EdgeDetectionOut0 =
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(XBARA_CTRL0_STS0_MASK), /*!< XBAR_OUT0 active edge interrupt flag, sets when active edge detected. */
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kXBARA_EdgeDetectionOut1 =
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(XBARA_CTRL0_STS1_MASK), /*!< XBAR_OUT1 active edge interrupt flag, sets when active edge detected. */
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kXBARA_EdgeDetectionOut2 =
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(XBARA_CTRL1_STS2_MASK << 16U), /*!< XBAR_OUT2 active edge interrupt flag, sets when active edge detected. */
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kXBARA_EdgeDetectionOut3 =
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(XBARA_CTRL1_STS3_MASK << 16U), /*!< XBAR_OUT3 active edge interrupt flag, sets when active edge detected. */
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} xbara_status_flag_t;
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/*!
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* @brief Defines the configuration structure of the XBARA control register.
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*
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* This structure keeps the configuration of XBARA control register for one output.
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* Control registers are available only for a few outputs. Not every XBARA module has
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* control registers.
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*/
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typedef struct XBARAControlConfig
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{
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xbara_active_edge_t activeEdge; /*!< Active edge to be detected. */
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xbara_request_t requestType; /*!< Selects DMA/Interrupt request. */
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} xbara_control_config_t;
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/*******************************************************************************
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* API
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******************************************************************************/
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#if defined(__cplusplus)
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extern "C" {
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#endif /* __cplusplus */
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/*!
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* @name XBARA functional Operation.
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* @{
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*/
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/*!
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* @brief Initializes the XBARA module.
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*
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* This function un-gates the XBARA clock.
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*
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* @param base XBARA peripheral address.
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*/
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void XBARA_Init(XBARA_Type *base);
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/*!
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* @brief Shuts down the XBARA module.
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*
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* This function disables XBARA clock.
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*
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* @param base XBARA peripheral address.
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*/
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void XBARA_Deinit(XBARA_Type *base);
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/*!
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* @brief Sets a connection between the selected XBARA_IN[*] input and the XBARA_OUT[*] output signal.
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*
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* This function connects the XBARA input to the selected XBARA output.
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* If more than one XBARA module is available, only the inputs and outputs from the same module
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* can be connected.
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*
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* Example:
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@code
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XBARA_SetSignalsConnection(XBARA, kXBARA_InputPIT_TRG0, kXBARA_OutputDMAMUX18);
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@endcode
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*
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* @param base XBARA peripheral address.
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* @param input XBARA input signal.
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* @param output XBARA output signal.
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*/
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void XBARA_SetSignalsConnection(XBARA_Type *base, xbar_input_signal_t input, xbar_output_signal_t output);
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/*!
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* @brief Gets the active edge detection status.
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*
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* This function gets the active edge detect status of all XBARA_OUTs. If the
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* active edge occurs, the return value is asserted. When the interrupt or the DMA
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* functionality is enabled for the XBARA_OUTx, this field is 1 when the interrupt
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* or DMA request is asserted and 0 when the interrupt or DMA request has been
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* cleared.
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*
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* @param base XBARA peripheral address.
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* @return the mask of these status flag bits.
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*/
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uint32_t XBARA_GetStatusFlags(XBARA_Type *base);
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/*!
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* @brief Clears the the edge detection status flags of relative mask.
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*
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* @param base XBARA peripheral address.
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* @param mask the status flags to clear.
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*/
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void XBARA_ClearStatusFlags(XBARA_Type *base, uint32_t mask);
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/*!
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* @brief Configures the XBARA control register.
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*
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* This function configures an XBARA control register. The active edge detection
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* and the DMA/IRQ function on the corresponding XBARA output can be set.
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*
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* Example:
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@code
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xbara_control_config_t userConfig;
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userConfig.activeEdge = kXBARA_EdgeRising;
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userConfig.requestType = kXBARA_RequestInterruptEnalbe;
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XBARA_SetOutputSignalConfig(XBARA, kXBARA_OutputDMAMUX18, &userConfig);
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@endcode
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*
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* @param base XBARA peripheral address.
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* @param output XBARA output number.
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* @param controlConfig Pointer to structure that keeps configuration of control register.
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*/
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void XBARA_SetOutputSignalConfig(XBARA_Type *base,
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xbar_output_signal_t output,
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const xbara_control_config_t *controlConfig);
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#if defined(__cplusplus)
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}
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#endif /* __cplusplus */
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/*! @}*/
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/*!* @} */
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#endif /* _FSL_XBARA_H_ */
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