219 lines
7.0 KiB
C
219 lines
7.0 KiB
C
/****************************************************************************
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* arch/arm/src/cxd56xx/cxd56_gpioint.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __ARCH_ARM_SRC_CXD56XX_CXD56_GPIOINT_H
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#define __ARCH_ARM_SRC_CXD56XX_CXD56_GPIOINT_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include "chip.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* 32-bit encoded gpioconf value
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*
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* 3322 2222 2222 1111 1111 1100 0000 0000
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* 1098 7654 3210 9876 5432 1098 7654 3210
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* ---- ---- ---- ---- ---- ---- ---- ----
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* .... .... .... ..B. .... .... .... .... Both detect mode
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* .... .... .... ...T .... .... .... .... Toggle detect mode
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* .... .... .... .... .... .... .... N... Noise Filter
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* .... .... .... .... .... .... .... .YYY Polarity
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*/
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/* GPIO Interrupt Polarity Definitions */
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/* #define GPIOINT_INSTANT_HIGH (0) */ /* Not supported */
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/* #define GPIOINT_INSTANT_LOW (1) */ /* Not supported */
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#define GPIOINT_LEVEL_HIGH (2) /* High Level */
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#define GPIOINT_LEVEL_LOW (3) /* Low Level */
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#define GPIOINT_EDGE_RISE (4) /* Rising Edge */
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#define GPIOINT_EDGE_FALL (5) /* Falling Edge */
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#define GPIOINT_EDGE_BOTH (7) /* Both Edge */
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#define GPIOINT_PSEUDO_EDGE_RISE (GPIOINT_LEVEL_HIGH | \
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GPIOINT_TOGGLE_MODE_MASK)
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/* Rising Edge without clear */
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#define GPIOINT_PSEUDO_EDGE_FALL (GPIOINT_LEVEL_LOW | \
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GPIOINT_TOGGLE_MODE_MASK)
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/* Falling Edge without clear */
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#define GPIOINT_PSEUDO_EDGE_BOTH (GPIOINT_TOGGLE_MODE_MASK | \
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GPIOINT_TOGGLE_BOTH_MASK)
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/* Both Edge without clear */
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/* GPIO Interrupt Noise Filter Definitions */
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#define GPIOINT_NOISE_FILTER_ENABLE (1u << 3)
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#define GPIOINT_NOISE_FILTER_DISABLE (0u << 3)
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/* Use Pseudo Edge Interrupt */
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#define GPIOINT_TOGGLE_MODE_MASK (1u << 16)
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#define GPIOINT_TOGGLE_BOTH_MASK (1u << 17)
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/****************************************************************************
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* Public Types
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****************************************************************************/
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struct cxd56_gpioint_status_s
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{
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int irq;
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uint32_t polarity;
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bool filter;
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bool enable;
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};
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typedef struct cxd56_gpioint_status_s cxd56_gpioint_status_t;
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#ifndef __ASSEMBLY__
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Public Functions Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: cxd56_gpioint_config
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*
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* Description:
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* Configure a GPIO pin as an GPIO pin interrupt source
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*
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* Input Parameters:
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* pin - Pin number defined in cxd56_pinconfig.h
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* gpiocfg - GPIO Interrupt Polarity and Noise Filter Configuration Value
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* isr - Interrupt handler
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* arg - Argument for the interrupt handler
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*
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* Returned Value:
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* IRQ number on success; a negated errno value on failure.
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*
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* Assumptions:
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* The interrupt are disabled so that read-modify-write operations
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* are safe.
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*
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****************************************************************************/
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int cxd56_gpioint_config(uint32_t pin, uint32_t gpiocfg, xcpt_t isr,
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void *arg);
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/****************************************************************************
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* Name: cxd56_gpioint_irq
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*
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* Description:
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* Get a GPIO interrupt number for specified pin number
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*
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* Returned Value:
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* IRQ number on success; a negated errno value on failure.
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*
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****************************************************************************/
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int cxd56_gpioint_irq(uint32_t pin);
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/****************************************************************************
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* Name: cxd56_gpioint_pin
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*
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* Description:
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* Get a pin number for specified IRQ number
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*
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* Returned Value:
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* Pin number on success; a negated errno value on failure.
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*
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****************************************************************************/
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int cxd56_gpioint_pin(int irq);
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/****************************************************************************
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* Name: cxd56_gpioint_enable
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*
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* Description:
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* Enable a GPIO interrupt for specified pin number
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void cxd56_gpioint_enable(uint32_t pin);
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/****************************************************************************
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* Name: cxd56_gpioint_disable
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*
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* Description:
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* Disable a GPIO interrupt for specified pin number
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void cxd56_gpioint_disable(uint32_t pin);
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/****************************************************************************
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* Name: cxd56_gpioint_invert
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*
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* Description:
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* Invert polarity of a GPIO interrupt for specified pin number
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void cxd56_gpioint_invert(uint32_t pin);
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/****************************************************************************
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* Name: cxd56_gpioint_status
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*
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* Description:
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* Get a gpio interrupt status
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*
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* Returned Value:
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* OK on success; A negated errno value on failure.
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*
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****************************************************************************/
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int cxd56_gpioint_status(uint32_t pin, cxd56_gpioint_status_t *stat);
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_ARM_SRC_CXD56XX_CXD56_GPIOINT_H */
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