328 lines
10 KiB
C
328 lines
10 KiB
C
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/*
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* Copyright : (C) 2022 Phytium Information Technology, Inc.
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* All Rights Reserved.
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*
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* This program is OPEN SOURCE software: you can redistribute it and/or modify it
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* under the terms of the Phytium Public License as published by the Phytium Technology Co.,Ltd,
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* either version 1.0 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the Phytium Public License for more details.
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*
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*
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* FilePath: fgpio_intr.c
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* Date: 2022-02-10 14:53:42
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* LastEditTime: 2022-02-18 08:25:29
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* Description: This files is for GPIO interrupt function implementation
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*
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* Modify History:
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* Ver Who Date Changes
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* ----- ------ -------- --------------------------------------
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* 1.0 zhugengyu 2022-3-1 init commit
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*/
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/***************************** Include Files *********************************/
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#include "fdebug.h"
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#include "fparameters.h"
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#include "fgpio_hw.h"
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#include "fgpio.h"
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/************************** Constant Definitions *****************************/
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/**************************** Type Definitions *******************************/
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/***************** Macros (Inline Functions) Definitions *********************/
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#define FGPIO_DEBUG_TAG "FGPIO-INTR"
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#define FGPIO_ERROR(format, ...) FT_DEBUG_PRINT_E(FGPIO_DEBUG_TAG, format, ##__VA_ARGS__)
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#define FGPIO_WARN(format, ...) FT_DEBUG_PRINT_W(FGPIO_DEBUG_TAG, format, ##__VA_ARGS__)
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#define FGPIO_INFO(format, ...) FT_DEBUG_PRINT_I(FGPIO_DEBUG_TAG, format, ##__VA_ARGS__)
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#define FGPIO_DEBUG(format, ...) FT_DEBUG_PRINT_D(FGPIO_DEBUG_TAG, format, ##__VA_ARGS__)
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/************************** Function Prototypes ******************************/
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/************************** Variable Definitions *****************************/
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/*****************************************************************************/
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/**
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* @name: FGpioGetInterruptMask
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* @msg: 获取GPIO A组引脚的中断屏蔽位
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* @return {*}
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* @param {FGpio} *instance, GPIO控制器实例
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* @param {u32} *mask, 返回的GPIO A组引脚中断屏蔽位
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* @param {u32} *enabled, 返回的GPIO A组中断使能位
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* @note 获取的是A组所有Pin的中断屏蔽位和中断使能位
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*/
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void FGpioGetInterruptMask(FGpio *const instance, u32 *mask, u32 *enabled)
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{
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FASSERT(instance);
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FASSERT(instance->is_ready == FT_COMPONENT_IS_READY);
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uintptr base_addr = instance->config.base_addr;
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if (NULL != mask)
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{
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*mask = FGpioReadReg32(base_addr, FGPIO_INTMASK_OFFSET);
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}
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if (NULL != enabled)
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{
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*enabled = FGpioReadReg32(base_addr, FGPIO_INTEN_OFFSET);
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}
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return;
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}
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/**
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* @name: FGpioSetInterruptMask
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* @msg: 设置GPIO A组引脚的中断屏蔽位
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* @return {*}
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* @param {FGpioPin} *pin, GPIO引脚实例
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* @param {boolean} enable, TRUE表示使能GPIO引脚中断，FALSE表示去使能GPIO引脚中断
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* @note index对应的引脚必须为A组引脚，B组引脚不支持中断
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*/
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void FGpioSetInterruptMask(FGpioPin *const pin, boolean enable)
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{
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FASSERT(pin);
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FGpio *const instance = pin->instance;
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FASSERT(instance);
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FASSERT(instance->is_ready == FT_COMPONENT_IS_READY);
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uintptr base_addr = instance->config.base_addr;
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u32 mask_bits = 0;
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u32 enable_bits = 0;
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FGpioPinId index = pin->index;
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#if defined(FGPIO_VERSION_1) /* FT2000-4, D2000 */
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if (FGPIO_PORT_B == index.port)
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{
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FGPIO_ERROR("None interrupt support for PORT-B !!!");
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return;
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}
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#endif
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if (FGPIO_DIR_OUTPUT == FGpioGetDirection(pin))
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{
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FGPIO_ERROR("None interrupt support for output GPIO !!!");
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return;
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}
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FGpioGetInterruptMask(instance, &mask_bits, &enable_bits);
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if (TRUE == enable)
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{
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mask_bits &= ~BIT(index.pin); /* not mask: 0 */
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enable_bits |= BIT(index.pin); /* enable pin irq: 1 */
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}
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else
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{
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mask_bits |= BIT(index.pin); /* mask: 1 */
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enable_bits &= ~BIT(index.pin); /* disable pin irq: 0 */
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}
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FGpioWriteReg32(base_addr, FGPIO_INTMASK_OFFSET, mask_bits);
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FGpioWriteReg32(base_addr, FGPIO_INTEN_OFFSET, enable_bits);
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return;
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}
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/**
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* @name: FGpioGetInterruptType
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* @msg: 获取GPIO A组引脚的中断类型和中断极性
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* @return {*}
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* @param {FGpio} *instance, GPIO控制器实例
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* @param {u32} *levels, GPIO A组引脚中断电平类型
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* @param {u32} *polarity, GPIO A组引脚中断极性类型
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* @note 获取的是A组所有Pin的电平和极性
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*/
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void FGpioGetInterruptType(FGpio *const instance, u32 *levels, u32 *polarity)
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{
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FASSERT(instance);
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FASSERT(instance->is_ready == FT_COMPONENT_IS_READY);
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uintptr base_addr = instance->config.base_addr;
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if (NULL != levels)
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{
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*levels = FGpioReadReg32(base_addr, FGPIO_INTTYPE_LEVEL_OFFSET);
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}
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if (NULL != polarity)
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{
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*polarity = FGpioReadReg32(base_addr, FGPIO_INTTYPE_LEVEL_OFFSET);
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}
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return;
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}
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/**
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* @name: FGpioSetInterruptType
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* @msg: 设置GPIO引脚的中断类型
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* @return {*}
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* @param {FGpioPin} *pin, GPIO引脚实例
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* @param {FGpioIrqType} type, GPIO引脚中断触发类型
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* @note index对应的引脚必须为A组引脚，B组引脚不支持中断
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*/
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void FGpioSetInterruptType(FGpioPin *const pin, const FGpioIrqType type)
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{
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FASSERT(pin);
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FGpio *const instance = pin->instance;
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FASSERT(instance);
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FASSERT(instance->is_ready == FT_COMPONENT_IS_READY);
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uintptr base_addr = instance->config.base_addr;
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u32 level = 0;
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u32 polarity = 0;
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FGpioPinId index = pin->index;
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#if defined(FGPIO_VERSION_1) /* FT2000-4, D2000 */
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if (FGPIO_PORT_B == index.port)
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{
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FGPIO_ERROR("None interrupt support for PORT-B !!!");
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return;
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}
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#endif
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FGpioGetInterruptType(instance, &level, &polarity);
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switch (type)
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{
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case FGPIO_IRQ_TYPE_EDGE_FALLING:
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level |= BIT(index.pin); /* 边沿敏感型 */
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polarity &= ~BIT(index.pin); /* 下降沿或低电平 */
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break;
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case FGPIO_IRQ_TYPE_EDGE_RISING:
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level |= BIT(index.pin); /* 边沿敏感型 */
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polarity |= BIT(index.pin); /* 上升沿或高电平 */
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break;
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case FGPIO_IRQ_TYPE_LEVEL_LOW:
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level &= ~BIT(index.pin); /* 电平敏感型 */
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polarity &= ~BIT(index.pin); /* 下降沿或低电平 */
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break;
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case FGPIO_IRQ_TYPE_LEVEL_HIGH:
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level &= ~BIT(index.pin); /* 电平敏感型 */
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polarity |= BIT(index.pin); /* 上升沿或高电平 */
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break;
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default:
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break;
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}
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FGpioWriteReg32(base_addr, FGPIO_INTTYPE_LEVEL_OFFSET, level);
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FGpioWriteReg32(base_addr, FGPIO_INT_POLARITY_OFFSET, polarity);
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return;
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}
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/**
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* @name: FGpioInterruptHandler
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* @msg: GPIO中断处理函数
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* @return {*}
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* @param {s32} vector, 中断输入参数1
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* @param {void} *param, 中断输入参数2
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* @note 需要用户将此函数注册到Interrtup上，使能GPIO中断才能生效
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*/
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void FGpioInterruptHandler(s32 vector, void *param)
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{
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FGpio *const instance = (FGpio * const)param;
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FGpioPin *pin = NULL;
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FASSERT(instance);
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int loop;
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uintptr base_addr = instance->config.base_addr;
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u32 status = FGpioReadReg32(base_addr, FGPIO_INTSTATUS_OFFSET);
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u32 raw_status = FGpioReadReg32(base_addr, FGPIO_RAW_INTSTATUS_OFFSET);
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#if defined(FGPIO_VERSION_2) /* E2000 gpio 3 ~ 5 */
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FASSERT_MSG(FGPIO_WITH_PIN_IRQ < instance->config.instance_id, "handle interrupt through pin !!!")
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#endif
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FGPIO_INFO("status: 0x%x, raw_status: 0x%x", status, raw_status);
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for (loop = FGPIO_PIN_0; loop < FGPIO_PIN_NUM; loop++)
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{
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if (status & BIT(loop))
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{
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pin = instance->pins[FGPIO_PORT_A][loop];
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if (NULL == pin)
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continue;
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if (pin->irq_cb)
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{
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pin->irq_cb(0U, pin->irq_cb_params);
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/* disable pin interrupt after triggered */
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if (TRUE == pin->irq_one_time)
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{
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FGpioSetInterruptMask(pin, FALSE);
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}
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}
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else
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{
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FGPIO_WARN("no irq handler callback for GPIO-%d-A-%d",
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instance->config.instance_id,
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loop);
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}
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}
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}
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/* clear interrupt status */
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FGpioWriteReg32(base_addr, FGPIO_PORTA_EOI_OFFSET, status);
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return;
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}
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#if defined(FGPIO_VERSION_2) /* E2000 GPIO 0 ~ 2 */
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/**
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* @name: FGpioPinInterruptHandler
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* @msg: GPIO引脚中断处理函数
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* @return {NONE}
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* @param {s32} vector, 中断输入参数1
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* @param {void} *param, 中断输入参数2
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*/
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void FGpioPinInterruptHandler(s32 vector, void *param)
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{
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FGpioPin *const pin = (FGpioPin * const)param;
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FASSERT(pin);
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FGpio *const instance = pin->instance;
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FASSERT(instance);
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uintptr base_addr = instance->config.base_addr;
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u32 status = FGpioReadReg32(base_addr, FGPIO_INTSTATUS_OFFSET);
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u32 raw_status = FGpioReadReg32(base_addr, FGPIO_RAW_INTSTATUS_OFFSET);
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FGPIO_INFO("status: 0x%x, raw_status: 0x%x", status, raw_status);
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if (pin->irq_cb)
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{
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pin->irq_cb(0U, pin->irq_cb_params);
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/* disable pin interrupt after triggered */
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if (TRUE == pin->irq_one_time)
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{
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FGpioSetInterruptMask(pin, FALSE);
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}
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}
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else
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{
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FGPIO_WARN("no irq handler callback for GPIO-%d-A-%d",
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pin->index.ctrl,
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pin->index.pin);
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}
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/* clear interrupt status */
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FGpioWriteReg32(base_addr, FGPIO_PORTA_EOI_OFFSET, status);
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return;
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}
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#endif
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/**
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* @name: FGpioRegisterInterruptCB
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* @msg: 注册GPIO引脚中断回调函数
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* @return {*}
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* @param {FGpioPin} pin, GPIO引脚实例
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* @param {FGpioInterruptCallback} cb, GPIO引脚中断回调函数
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* @param {void} *cb_param, GPIO引脚中断回调函数输入参数
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* @param {boolean} irq_one_time, TRUE表示引脚中断触发一次后自动关闭中断，用于电平敏感中断
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* @note 注册的回调函数在FGpioInterruptHandler中被调用
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*/
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void FGpioRegisterInterruptCB(FGpioPin *const pin, FGpioInterruptCallback cb, void *cb_param, boolean irq_one_time)
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{
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FASSERT(pin);
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pin->irq_cb = cb;
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pin->irq_cb_params = cb_param;
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pin->irq_one_time = irq_one_time;
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return;
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}
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