159 lines
4.4 KiB
C
159 lines
4.4 KiB
C
/*
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* Copyright (C) 2017 C-SKY Microsystems Co., Ltd. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* 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,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/******************************************************************************
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* @file pinmux.c
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* @brief source file for the pinmux
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* @version V1.0
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* @date 02. June 2017
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******************************************************************************/
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#include <stdint.h>
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#include "pinmux.h"
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#include "pin_name.h"
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#define readl(addr) \
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({ unsigned int __v = (*(volatile unsigned int *) (addr)); __v; })
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#define writel(b,addr) (void)((*(volatile unsigned int *) (addr)) = (b))
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/*******************************************************************************
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* function: phobos_ioreuse_inital
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*
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* description:
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* initial phobos_pinmux
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*******************************************************************************/
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void phobos_ioreuse_initial(void)
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{
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unsigned int value;
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/* gpio data source select */
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value = readl(PHOBOS_GIPO0_PORTCTL_REG);
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value |= GPIO0_REUSE_EN;
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writel(value, PHOBOS_GIPO0_PORTCTL_REG);
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value = readl(PHOBOS_GIPO1_PORTCTL_REG);
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value |= GPIO1_REUSE_EN;
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writel(value, PHOBOS_GIPO1_PORTCTL_REG);
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/* reuse function select */
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value = readl(PHOBOS_IOMUX0L_REG);
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value |= IOMUX0L_FUNCTION_SEL;
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writel(value, PHOBOS_IOMUX0L_REG);
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value = readl(PHOBOS_IOMUX0H_REG);
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value |= IOMUX1L_FUNCTION_SEL;
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writel(value, PHOBOS_IOMUX0H_REG);
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value = readl(PHOBOS_IOMUX1L_REG);
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value |= IOMUX1L_FUNCTION_SEL;
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writel(value, PHOBOS_IOMUX1L_REG);
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}
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void phobos_pwm_ioreuse(void)
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{
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unsigned int value;
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/* gpio data source select */
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value = readl(PHOBOS_GIPO0_PORTCTL_REG);
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value |= PWM_GPIO0_REUSE_EN;
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writel(value, PHOBOS_GIPO0_PORTCTL_REG);
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/* reuse function select */
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value = readl(PHOBOS_IOMUX0L_REG);
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value |= PWM_IOMUX0L_FUNCTION_SEL;
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writel(value, PHOBOS_IOMUX0L_REG);
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}
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int32_t pin_mux(pin_name_t pin, uint16_t function)
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{
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unsigned int val = 0;
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unsigned int reg_val = 0;
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uint8_t offset;
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if (function > 3)
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{
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if (pin < PB0_ADC0_SDA0_PWM5_XX)
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{
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offset = pin;
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/* gpio data source select */
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val = readl(PHOBOS_GIPO0_PORTCTL_REG);
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val &= ~(1 << offset);
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writel(val, PHOBOS_GIPO0_PORTCTL_REG);
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return 0;
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}
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else if (pin >= PB0_ADC0_SDA0_PWM5_XX)
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{
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offset = pin - 32;
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/* gpio data source select */
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val = readl(PHOBOS_GIPO1_PORTCTL_REG);
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val &= ~(1 << offset);
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writel(val, PHOBOS_GIPO1_PORTCTL_REG);
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return 0;
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}
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else
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{
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return -1;
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}
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}
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if (pin >= PB0_ADC0_SDA0_PWM5_XX)
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{
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offset = pin - 32;
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/* gpio data source select */
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val = readl(PHOBOS_GIPO1_PORTCTL_REG);
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val |= (1 << offset);
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writel(val, PHOBOS_GIPO1_PORTCTL_REG);
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reg_val = (0x3 << (offset * 2));
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/* reuse function select */
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val = readl(PHOBOS_IOMUX1L_REG);
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val &= ~(reg_val);
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val |= (function << (2 * offset));
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writel(val, PHOBOS_IOMUX1L_REG);
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return 0;
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}
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offset = pin;
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/* gpio data source select */
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val = readl(PHOBOS_GIPO0_PORTCTL_REG);
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val |= (1 << offset);
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writel(val, PHOBOS_GIPO0_PORTCTL_REG);
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if (pin >= PA16_SPI1CLK_PWMTRIG1_XX_XX)
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{
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offset = pin - 16;
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reg_val = (0x3 << (offset * 2));
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/* reuse function select */
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val = readl(PHOBOS_IOMUX0H_REG);
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val &= ~(reg_val);
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val |= (function << (2 * offset));
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writel(val, PHOBOS_IOMUX0H_REG);
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return 0;
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}
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reg_val = (0x3 << (offset * 2));
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/* reuse function select */
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val = readl(PHOBOS_IOMUX0L_REG);
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val &= ~(reg_val);
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val |= (function << (2 * offset));
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writel(val, PHOBOS_IOMUX0L_REG);
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return 0;
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}
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