/*
 * Copyright (c) 2015, Freescale Semiconductor, Inc.
 * Copyright 2016-2020 NXP
 * All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#ifndef FSL_INTMUX_H_
#define FSL_INTMUX_H_

#include "fsl_common.h"

/*!
 * @addtogroup intmux
 * @{
 */

/*******************************************************************************
 * Definitions
 ******************************************************************************/

/*! @name Driver version */
/*! @{ */
#define FSL_INTMUX_DRIVER_VERSION (MAKE_VERSION(2, 0, 4))
/*! @} */

/*! @brief INTMUX channel logic mode. */
typedef enum _intmux_channel_logic_mode
{
    kINTMUX_ChannelLogicOR = 0x0U, /*!< Logic OR all enabled interrupt inputs */
    kINTMUX_ChannelLogicAND,       /*!< Logic AND all enabled interrupt inputs */
} intmux_channel_logic_mode_t;

/*******************************************************************************
 * API
 ******************************************************************************/

#if defined(__cplusplus)
extern "C" {
#endif

/*! @name Initialization and deinitialization */
/*! @{ */

/*!
 * @brief Initializes the INTMUX module.
 *
 * This function enables the clock gate for the specified INTMUX. It then resets all channels, so that no
 * interrupt sources are routed and the logic mode is set to default of #kINTMUX_ChannelLogicOR.
 * Finally, the NVIC vectors for all the INTMUX output channels are enabled.
 *
 * @param base INTMUX peripheral base address.
 */
void INTMUX_Init(INTMUX_Type *base);

/*!
 * @brief Deinitializes an INTMUX instance for operation.
 *
 * The clock gate for the specified INTMUX is disabled and the NVIC vectors for all channels are disabled.
 *
 * @param base INTMUX peripheral base address.
 */
void INTMUX_Deinit(INTMUX_Type *base);

/*!
 * @brief Resets an INTMUX channel.
 *
 * Sets all register values in the specified channel to their reset value. This function disables all interrupt
 * sources for the channel.
 *
 * @param base INTMUX peripheral base address.
 * @param channel The INTMUX channel number.
 */
static inline void INTMUX_ResetChannel(INTMUX_Type *base, uint32_t channel)
{
    assert(channel < (uint32_t)FSL_FEATURE_INTMUX_CHANNEL_COUNT);

    base->CHANNEL[channel].CHn_CSR |= INTMUX_CHn_CSR_RST_MASK;
}

/*!
 * @brief Sets the logic mode for an INTMUX channel.
 *
 * INTMUX channels can be configured to use one of the two logic modes that control how pending interrupt sources
 * on the channel trigger the output interrupt.
 * - #kINTMUX_ChannelLogicOR means any source pending triggers the output interrupt.
 * - #kINTMUX_ChannelLogicAND means all selected sources on the channel must be pending before the channel
 *          output interrupt triggers.
 *
 * @param base INTMUX peripheral base address.
 * @param channel The INTMUX channel number.
 * @param logic The INTMUX channel logic mode.
 */
static inline void INTMUX_SetChannelMode(INTMUX_Type *base, uint32_t channel, intmux_channel_logic_mode_t logic)
{
    assert(channel < (uint32_t)FSL_FEATURE_INTMUX_CHANNEL_COUNT);

    base->CHANNEL[channel].CHn_CSR = INTMUX_CHn_CSR_AND(logic);
}

/*! @} */
/*! @name Sources */
/*! @{ */

/*!
 * @brief Enables an interrupt source on an INTMUX channel.
 *
 * @param base INTMUX peripheral base address.
 * @param channel Index of the INTMUX channel on which the specified interrupt is enabled.
 * @param irq Interrupt to route to the specified INTMUX channel. The interrupt must be an INTMUX source.
 */
static inline void INTMUX_EnableInterrupt(INTMUX_Type *base, uint32_t channel, IRQn_Type irq)
{
    assert(channel < (uint32_t)FSL_FEATURE_INTMUX_CHANNEL_COUNT);
    assert((uint32_t)irq >= (uint32_t)FSL_FEATURE_INTMUX_IRQ_START_INDEX);

    base->CHANNEL[channel].CHn_IER_31_0 |= (1UL << ((uint32_t)irq - (uint32_t)FSL_FEATURE_INTMUX_IRQ_START_INDEX));
}

/*!
 * @brief Disables an interrupt source on an INTMUX channel.
 *
 * @param base INTMUX peripheral base address.
 * @param channel Index of the INTMUX channel on which the specified interrupt is disabled.
 * @param irq Interrupt number. The interrupt must be an INTMUX source.
 */
static inline void INTMUX_DisableInterrupt(INTMUX_Type *base, uint32_t channel, IRQn_Type irq)
{
    assert(channel < (uint32_t)FSL_FEATURE_INTMUX_CHANNEL_COUNT);
    assert((uint32_t)irq >= (uint32_t)FSL_FEATURE_INTMUX_IRQ_START_INDEX);

    base->CHANNEL[channel].CHn_IER_31_0 &= ~(1UL << ((uint32_t)irq - (uint32_t)FSL_FEATURE_INTMUX_IRQ_START_INDEX));
}

/*! @} */
/*! @name Status */
/*! @{ */

/*!
 * @brief Gets INTMUX pending interrupt sources for a specific channel.
 *
 * @param base INTMUX peripheral base address.
 * @param channel The INTMUX channel number.
 * @return The mask of pending interrupt bits. Bit[n] set means INTMUX source n is pending.
 */
static inline uint32_t INTMUX_GetChannelPendingSources(INTMUX_Type *base, uint32_t channel)
{
    assert(channel < (uint32_t)FSL_FEATURE_INTMUX_CHANNEL_COUNT);

    return base->CHANNEL[channel].CHn_IPR_31_0;
}

/*! @} */

#if defined(__cplusplus)
}
#endif

/*! @} */

#endif /* FSL_INTMUX_H_ */