--- /dev/null
+/*
+ * Copyright (C) 2017 C-SKY Microsystems Co., Ltd. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/******************************************************************************
+ * @file drv_intc.h
+ * @brief header file for intc driver
+ * @version V1.0
+ * @date 02. June 2017
+ ******************************************************************************/
+
+#ifndef _CSI_INTC_H_
+#define _CSI_INTC_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+#include <drv_common.h>
+
+typedef enum int_trigger_mode_t
+{
+ INT_MODE_LOW_LEVEL,
+ INT_MODE_HIGH_LEVEL,
+ INT_MODE_RISING_EDGE,
+ INT_MODE_FALLING_EDGE,
+ INT_MODE_DOUBLE_EDGE,
+} int_trigger_mode_t;
+
+/**
+ \brief initialize the INTC interrupt controller
+ \param [in] prio_bits the priority bits of INTC interrupt controller.
+ */
+void csi_intc_init(void);
+
+/**
+ \brief Enable External Interrupt
+ \details Enables a device-specific interrupt in the INTC interrupt controller.
+ \param [in] IRQn External interrupt number. Value cannot be negative.
+ */
+void csi_intc_enable_irq(int32_t IRQn);
+
+/**
+ \brief Disable External Interrupt
+ \details Disables a device-specific interrupt in the INTC interrupt controller.
+ \param [in] IRQn External interrupt number. Value cannot be negative.
+ */
+void csi_intc_disable_irq(int32_t IRQn);
+
+/**
+ \brief Get Pending Interrupt
+ \details Reads the pending register in the INTC and returns the pending bit for the specified interrupt.
+ \param [in] IRQn Interrupt number.
+ \return 0 Interrupt status is not pending.
+ \return 1 Interrupt status is pending.
+ */
+uint32_t csi_intc_get_pending_irq(int32_t IRQn);
+
+/**
+ \brief Set Pending Interrupt
+ \details Sets the pending bit of an external interrupt.
+ \param [in] IRQn Interrupt number. Value cannot be negative.
+ */
+void csi_intc_set_pending_irq(int32_t IRQn);
+
+/**
+ \brief Clear Pending Interrupt
+ \details Clears the pending bit of an external interrupt.
+ \param [in] IRQn External interrupt number. Value cannot be negative.
+ */
+void csi_intc_clear_pending_irq(int32_t IRQn);
+
+/**
+ \brief Get Wake up Interrupt
+ \details Reads the wake up register in the INTC and returns the pending bit for the specified interrupt.
+ \param [in] IRQn Interrupt number.
+ \return 0 Interrupt is not set as wake up interrupt.
+ \return 1 Interrupt is set as wake up interrupt.
+ */
+uint32_t csi_intc_get_wakeup_irq(int32_t IRQn);
+
+/**
+ \brief Set Wake up Interrupt
+ \details Sets the wake up bit of an external interrupt.
+ \param [in] IRQn Interrupt number. Value cannot be negative.
+ */
+void csi_intc_set_wakeup_irq(int32_t IRQn);
+
+/**
+ \brief Clear Wake up Interrupt
+ \details Clears the wake up bit of an external interrupt.
+ \param [in] IRQn External interrupt number. Value cannot be negative.
+ */
+void csi_intc_clear_wakeup_irq(int32_t IRQn);
+
+/**
+ \brief Get Active Interrupt
+ \details Reads the active register in the INTC and returns the active bit for the device specific interrupt.
+ \param [in] IRQn Device specific interrupt number.
+ \return 0 Interrupt status is not active.
+ \return 1 Interrupt status is active.
+ \note IRQn must not be negative.
+ */
+uint32_t csi_intc_get_active(int32_t IRQn);
+
+/**
+ \brief Set Threshold register
+ \details set the threshold register in the INTC.
+ \param [in] VectThreshold specific vecter threshold.
+ \param [in] PrioThreshold specific priority threshold.
+ */
+void csi_intc_set_threshold(uint32_t VectThreshold, uint32_t PrioThreshold);
+
+/**
+ \brief Set Interrupt Priority
+ \details Sets the priority of an interrupt.
+ \note The priority cannot be set for every core interrupt.
+ \param [in] IRQn Interrupt number.
+ \param [in] priority Priority to set.
+ */
+void csi_intc_set_prio(int32_t IRQn, uint32_t priority);
+
+/**
+ \brief Get Interrupt Priority
+ \details Reads the priority of an interrupt.
+ The interrupt number can be positive to specify an external (device specific) interrupt,
+ or negative to specify an internal (core) interrupt.
+ \param [in] IRQn Interrupt number.
+ \return Interrupt Priority.
+ Value is aligned automatically to the implemented priority bits of the microcontroller.
+ */
+uint32_t csi_intc_get_prio(int32_t IRQn);
+
+/**
+ \brief funciton is acknowledge the IRQ. this interface is internally used by irq system
+ \param[in] irq irq number to operate
+ \return 0 on success; -1 on failure
+ */
+int csi_intc_ack_irq(int32_t IRQn);
+
+/**
+ \briefThis function is set the attributes of an IRQ.
+ \param[in] irq irq number to operate
+ \param[in] priority interrupt priority
+ \param[in] trigger_mode interrupt trigger_mode
+ \return 0 on success; -1 on failure
+*/
+int csi_intc_set_attribute(int32_t IRQn, uint32_t priority,int_trigger_mode_t trigger_mode);
+
+#endif /* _CSI_INTC_H_ */
+
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