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/*
ChibiOS - Copyright (C) 2006..2016 Giovanni Di Sirio
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 SAMA5D2x/aic.c
* @brief SAMA AIC support code.
*
* @addtogroup COMMON_SAMA5D2x_AIC
* @{
*/
#include "hal.h"
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local types. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local macros. */
/*===========================================================================*/
/**
* @brief Enable write protection on AIC registers block.
*
* @param[in] aicp pointer to a AIC register block
*
* @notapi
*/
#define aicEnableWP(aicp) { \
aicp->AIC_WPMR = AIC_WPMR_WPKEY_PASSWD | AIC_WPMR_WPEN; \
}
/**
* @brief Disable write protection on AIC registers block.
*
* @param[in] aicp pointer to a AIC register block
*
* @notapi
*/
#define aicDisableWP(aicp) { \
aicp->AIC_WPMR = AIC_WPMR_WPKEY_PASSWD; \
}
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/**
* @brief AIC Initialization.
* @note Better reset everything in the AIC.
*
* @notapi
*/
void aicInit(void) {
Aic *aic = SAIC;
unsigned i;
/* Disable all interrupts */
for (i = 1; i < ID_PERIPH_COUNT; i++) {
aic->AIC_SSR = i;
aic->AIC_IDCR = AIC_IDCR_INTD;
}
/* Clear All pending interrupts flags */
for (i = 0; i < ID_PERIPH_COUNT; i++) {
aic->AIC_SSR = i;
aic->AIC_ICCR = AIC_ICCR_INTCLR;
}
}
/**
* @brief Configures an interrupt in the AIC.
* @note Source cannot be ID_SAIC_FIQ (0).
*
* @param[in] source interrupt source to configure
* @param[in] priority priority level of the selected source.
*/
void aicSetSourcePriority(uint32_t source, uint8_t priority) {
Aic *aic = SAIC;
osalDbgCheck(source != ID_SAIC_FIQ);
/* Disable write protection */
aicDisableWP(aic);
/* Set source id */
aic->AIC_SSR = source;
/* Disable the interrupt first */
aic->AIC_IDCR = AIC_IDCR_INTD;
/* Configure priority */
aic->AIC_SMR = AIC_SMR_PRIOR(priority);
/* Clear interrupt */
aic->AIC_ICCR = AIC_ICCR_INTCLR;
/* Enable write protection */
aicEnableWP(aic);
}
/**
* @brief Sets the source handler of an interrupt.
*
* @param[in] source interrupt source to configure
* @param[in] handler handler for the interrupt source selected
*/
void aicSetSourceHandler(uint32_t source, bool (*handler)(void)) {
Aic *aic = SAIC;
/* Disable write protection */
aicDisableWP(aic);
/* Select source and assign handler */
aic->AIC_SSR = AIC_SSR_INTSEL(source);
aic->AIC_SVR = (uint32_t)handler;
/* Enable write protection */
aicEnableWP(aic);
}
/**
* @brief Sets the spurious handler of an interrupt.
*
* @param[in] handler handler for the interrupt
*/
void aicSetSpuriousHandler(bool (*handler)(void)) {
Aic *aic = SAIC;
/* Disable write protection */
aicDisableWP(aic);
/* Assign handler */
aic->AIC_SPU = (uint32_t)handler;
/* Enable write protection */
aicEnableWP(aic);
}
/**
* @brief Enables interrupts coming from the source.
*
* @param[in] source interrupt source to enable
*/
void aicEnableInt(uint32_t source) {
Aic *aic = SAIC;
aic->AIC_SSR = AIC_SSR_INTSEL(source);
aic->AIC_IECR = AIC_IECR_INTEN;
}
/**
* @brief Disables interrupts coming from the selected source.
*
* @param[in] source interrupt source to disable
*/
void aicDisableInt(uint32_t source) {
Aic *aic = SAIC;
aic->AIC_SSR = AIC_SSR_INTSEL(source);
aic->AIC_IDCR = AIC_IDCR_INTD;
}
/**
* @brief Clears interrupts coming from the selected source.
*
* @param[in] source interrupt source to Clear
*/
void aicClearInt(uint32_t source) {
Aic *aic = SAIC;
aic->AIC_SSR = AIC_SSR_INTSEL(source);
aic->AIC_ICCR = AIC_ICCR_INTCLR;
}
/**
* @brief Sets interrupts coming from the selected source.
*
* @param[in] source interrupt source to Set
*/
void aicSetInt(uint32_t source) {
Aic *aic = SAIC;
aic->AIC_SSR = AIC_SSR_INTSEL(source);
aic->AIC_ISCR = AIC_ISCR_INTSET;
}
/** @} */
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