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rt-thread-official/bsp/imx/imx6ull-smart/drivers/drv_pin.c

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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-01-13 Lyons edit and remove irq setting
* 2021-06-23 RiceChen refactor gpio driver and support gpio IRQ
*/
#include <rthw.h>
#include <rtdevice.h>
#include "drv_pin.h"
#include "drv_common.h"
#include "fsl_gpio.h"
#include "fsl_iomuxc.h"
rt_uint32_t iomuxc_base = IOMUXC_BASE;
rt_uint32_t iomuxc_snvs_base = IOMUXC_SNVS_BASE;
struct pin_mask
{
GPIO_Type *gpio;
rt_int32_t valid_mask;
clock_ip_name_t gpio_clock;
};
struct pin_mask mask_tab[5] =
{
{GPIO1, 0xffffffff, kCLOCK_Gpio1}, /* GPIO1 */
{GPIO2, 0x003fffff, kCLOCK_Gpio2}, /* GPIO2 */
{GPIO3, 0x1fffffff, kCLOCK_Gpio3}, /* GPIO3,29~31 not supported */
{GPIO4, 0x1fffffff, kCLOCK_Gpio4}, /* GPIO4,29~31 not supported */
{GPIO5, 0x00000fff, kCLOCK_Gpio5} /* GPIO5,12~31 not supported */
};
const rt_int8_t gpio_reg_offset[5][32] =
{
{ 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 0, 1, 2, 3, 4, 5, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,},
{32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 94, 95, 96, 97, 98, 99, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,},
{48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, -1, -1, -1,},
{77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93,100,101,102,103,104,105,106,107,108,109,110,111, -1, -1, -1,},
{ 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 0, 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,},
};
static struct rt_pin_irq_hdr pin_irq_hdr_tab[] =
{
// GPIO1
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
// GPIO2
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
// GPIO3
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
// GPIO4
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
// GPIO5
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
};
static void imx6ull_pin_mode(struct rt_device *device, rt_base_t pin, rt_uint8_t mode)
{
GPIO_Type *gpio_base = RT_NULL;
gpio_pin_config_t config;
rt_uint32_t config_value = 0;
rt_int8_t port, pin_num, reg_offset;
rt_uint32_t mux_base_addr, config_base_addr;
port = pin >> 5;
pin_num = pin & 31;
config.outputLogic = PIN_LOW;
config.interruptMode = kGPIO_NoIntmode;
switch (mode)
{
case PIN_MODE_OUTPUT:
{
config.direction = kGPIO_DigitalOutput;
config_value = 0x0030U;
}
break;
case PIN_MODE_INPUT:
{
config.direction = kGPIO_DigitalInput;
config_value = 0x0830U;
}
break;
case PIN_MODE_INPUT_PULLDOWN:
{
config.direction = kGPIO_DigitalInput;
config_value = 0x3030U;
}
break;
case PIN_MODE_INPUT_PULLUP:
{
config.direction = kGPIO_DigitalInput;
config_value = 0xB030U;
}
break;
case PIN_MODE_OUTPUT_OD:
{
config.direction = kGPIO_DigitalOutput;
config_value = 0x0830U;
}
break;
}
reg_offset = gpio_reg_offset[port][pin_num];
gpio_base = (GPIO_Type *)imx6ull_get_periph_paddr((rt_uint32_t)mask_tab[port].gpio);
if(gpio_base != GPIO5)
{
IOMUXC_Type *periph = (IOMUXC_Type*)iomuxc_base;
mux_base_addr = (rt_uint32_t)&periph->SW_MUX_CTL_PAD[reg_offset];
config_base_addr = (rt_uint32_t)&periph->SW_PAD_CTL_PAD[reg_offset];
}
else
{
IOMUXC_SNVS_Type *periph = (IOMUXC_SNVS_Type*)iomuxc_snvs_base;
mux_base_addr = (rt_uint32_t)&periph->SW_MUX_CTL_PAD[reg_offset];
config_base_addr = (rt_uint32_t)&periph->SW_PAD_CTL_PAD[reg_offset];
}
IOMUXC_SetPinMux(mux_base_addr, 0x5U, 0x00000000U, 0x0U, config_base_addr, 1);
IOMUXC_SetPinConfig(mux_base_addr, 0x5U, 0x00000000U, 0x0U, config_base_addr, config_value);
GPIO_PinInit(mask_tab[port].gpio, pin_num, &config);
}
static void imx6ull_pin_write(struct rt_device *device, rt_base_t pin, rt_uint8_t value)
{
rt_int8_t port = 0, pin_num = 0;
port = pin >> 5;
pin_num = pin & 31;
GPIO_WritePinOutput(mask_tab[port].gpio, pin_num, value);
}
static rt_int8_t imx6ull_pin_read(struct rt_device *device, rt_base_t pin)
{
rt_int8_t value = 0;
rt_int8_t port = 0, pin_num = 0;
value = PIN_LOW;
port = pin >> 5;
pin_num = pin & 31;
value = GPIO_ReadPadStatus(mask_tab[port].gpio, pin_num);
return value;
}
static rt_err_t imx6ull_pin_attach_irq(struct rt_device *device, rt_base_t pin,
rt_uint8_t mode, void (*hdr)(void *args),
void *args)
{
rt_base_t level = 0;
level = rt_hw_interrupt_disable();
if (pin_irq_hdr_tab[pin].pin == pin &&
pin_irq_hdr_tab[pin].hdr == hdr &&
pin_irq_hdr_tab[pin].mode == mode &&
pin_irq_hdr_tab[pin].args == args)
{
rt_hw_interrupt_enable(level);
return RT_EOK;
}
pin_irq_hdr_tab[pin].pin = pin;
pin_irq_hdr_tab[pin].hdr = hdr;
pin_irq_hdr_tab[pin].mode = mode;
pin_irq_hdr_tab[pin].args = args;
rt_hw_interrupt_enable(level);
return RT_EOK;
}
static rt_err_t imx6ull_pin_detach_irq(struct rt_device *device, rt_base_t pin)
{
rt_base_t level = 0;
level = rt_hw_interrupt_disable();
if (pin_irq_hdr_tab[pin].pin == -1)
{
rt_hw_interrupt_enable(level);
return RT_EOK;
}
pin_irq_hdr_tab[pin].pin = -1;
pin_irq_hdr_tab[pin].hdr = RT_NULL;
pin_irq_hdr_tab[pin].mode = 0;
pin_irq_hdr_tab[pin].args = RT_NULL;
rt_hw_interrupt_enable(level);
return RT_EOK;
}
static rt_err_t imx6ull_pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint8_t enabled)
{
gpio_interrupt_mode_t int_mode;
rt_int8_t port = 0, pin_num = 0;
port = pin >> 5;
pin_num = pin & 31;
if (pin_irq_hdr_tab[pin].pin == -1)
{
rt_kprintf("rtt pin: %d callback function not initialized!\n", pin);
return RT_ENOSYS;
}
if (enabled == PIN_IRQ_ENABLE)
{
switch (pin_irq_hdr_tab[pin].mode)
{
case PIN_IRQ_MODE_RISING:
int_mode = kGPIO_IntRisingEdge;
break;
case PIN_IRQ_MODE_FALLING:
int_mode = kGPIO_IntFallingEdge;
break;
case PIN_IRQ_MODE_RISING_FALLING:
int_mode = kGPIO_IntRisingOrFallingEdge;
break;
case PIN_IRQ_MODE_HIGH_LEVEL:
int_mode = kGPIO_IntHighLevel;
break;
case PIN_IRQ_MODE_LOW_LEVEL:
int_mode = kGPIO_IntLowLevel;
break;
default:
int_mode = kGPIO_IntRisingEdge;
break;
}
GPIO_SetPinInterruptConfig(mask_tab[port].gpio, pin_num, int_mode);
GPIO_EnableInterrupts(mask_tab[port].gpio, 1U << pin_num);
}
else if (enabled == PIN_IRQ_DISABLE)
{
GPIO_DisableInterrupts(mask_tab[port].gpio, pin_num);
}
else
{
return RT_EINVAL;
}
return RT_EOK;
}
static void imx6ull_isr(rt_int16_t index_offset, rt_int8_t pin_start, GPIO_Type *base)
{
rt_int32_t isr_status = 0, index = 0;
rt_int8_t i = 0, pin_end = 0;
pin_end = pin_start + 15;
isr_status = GPIO_GetPinsInterruptFlags(base) & base->IMR;
for (i = pin_start; i <= pin_end ; i++)
{
if (isr_status & (1 << i))
{
GPIO_ClearPinsInterruptFlags(base, (1 << i));
index = index_offset + i;
if (pin_irq_hdr_tab[index].hdr != RT_NULL)
{
pin_irq_hdr_tab[index].hdr(pin_irq_hdr_tab[index].args);
}
}
}
}
/* GPIO1 index offset is 0 */
void GPIO1_Combined_0_15_IRQHandler(int irqno, void *param)
{
rt_interrupt_enter();
imx6ull_isr(0, 0, mask_tab[0].gpio);
rt_interrupt_leave();
}
void GPIO1_Combined_16_31_IRQHandler(int irqno, void *param)
{
rt_interrupt_enter();
imx6ull_isr(0, 15, mask_tab[0].gpio);
rt_interrupt_leave();
}
/* GPIO2 index offset is 32 */
void GPIO2_Combined_0_15_IRQHandler(int irqno, void *param)
{
rt_interrupt_enter();
imx6ull_isr(32, 0, mask_tab[1].gpio);
rt_interrupt_leave();
}
void GPIO2_Combined_16_31_IRQHandler(int irqno, void *param)
{
rt_interrupt_enter();
imx6ull_isr(32, 15, mask_tab[1].gpio);
rt_interrupt_leave();
}
/* GPIO3 index offset is 64 */
void GPIO3_Combined_0_15_IRQHandler(int irqno, void *param)
{
rt_interrupt_enter();
imx6ull_isr(64, 0, mask_tab[2].gpio);
rt_interrupt_leave();
}
void GPIO3_Combined_16_31_IRQHandler(int irqno, void *param)
{
rt_interrupt_enter();
imx6ull_isr(64, 15, mask_tab[2].gpio);
rt_interrupt_leave();
}
/* GPIO4 index offset is 96 */
void GPIO4_Combined_0_15_IRQHandler(int irqno, void *param)
{
rt_interrupt_enter();
imx6ull_isr(96, 0, mask_tab[3].gpio);
rt_interrupt_leave();
}
void GPIO4_Combined_16_31_IRQHandler(int irqno, void *param)
{
rt_interrupt_enter();
imx6ull_isr(96, 15, mask_tab[3].gpio);
rt_interrupt_leave();
}
/* GPIO5 index offset is 128 */
void GPIO5_Combined_0_15_IRQHandler(int irqno, void *param)
{
rt_interrupt_enter();
imx6ull_isr(128, 0, mask_tab[4].gpio);
rt_interrupt_leave();
}
/* GPIO5 index offset is 128 */
void GPIO5_Combined_16_31_IRQHandler(int irqno, void *param)
{
rt_interrupt_enter();
imx6ull_isr(128, 0, mask_tab[4].gpio);
rt_interrupt_leave();
}
static const struct rt_pin_ops gpio_ops =
{
.pin_mode = imx6ull_pin_mode,
.pin_write = imx6ull_pin_write,
.pin_read = imx6ull_pin_read,
.pin_attach_irq = imx6ull_pin_attach_irq,
.pin_detach_irq = imx6ull_pin_detach_irq,
.pin_irq_enable = imx6ull_pin_irq_enable,
.pin_get = RT_NULL,
};
static void imx6ull_pin_interrupt_install(void)
{
rt_hw_interrupt_install(IMX_INT_GPIO1_INT15_0, GPIO1_Combined_0_15_IRQHandler, RT_NULL, "GPIO1_0_15");
rt_hw_interrupt_install(IMX_INT_GPIO1_INT31_16, GPIO1_Combined_16_31_IRQHandler, RT_NULL, "GPIO1_16_31");
rt_hw_interrupt_install(IMX_INT_GPIO2_INT15_0, GPIO2_Combined_0_15_IRQHandler, RT_NULL, "GPIO2_0_15");
rt_hw_interrupt_install(IMX_INT_GPIO2_INT31_16, GPIO2_Combined_16_31_IRQHandler, RT_NULL, "GPIO2_16_31");
rt_hw_interrupt_install(IMX_INT_GPIO3_INT15_0, GPIO3_Combined_0_15_IRQHandler, RT_NULL, "GPIO3_0_15");
rt_hw_interrupt_install(IMX_INT_GPIO3_INT31_16, GPIO3_Combined_16_31_IRQHandler, RT_NULL, "GPIO3_16_31");
rt_hw_interrupt_install(IMX_INT_GPIO4_INT15_0, GPIO4_Combined_0_15_IRQHandler, RT_NULL, "GPIO4_0_15");
rt_hw_interrupt_install(IMX_INT_GPIO4_INT31_16, GPIO4_Combined_16_31_IRQHandler, RT_NULL, "GPIO4_16_31");
rt_hw_interrupt_install(IMX_INT_GPIO5_INT15_0, GPIO5_Combined_0_15_IRQHandler, RT_NULL, "GPIO5_0_15");
rt_hw_interrupt_install(IMX_INT_GPIO5_INT31_16, GPIO5_Combined_16_31_IRQHandler, RT_NULL, "GPIO5_16_31");
rt_hw_interrupt_umask(IMX_INT_GPIO1_INT15_0);
rt_hw_interrupt_umask(IMX_INT_GPIO1_INT31_16);
rt_hw_interrupt_umask(IMX_INT_GPIO2_INT15_0);
rt_hw_interrupt_umask(IMX_INT_GPIO2_INT31_16);
rt_hw_interrupt_umask(IMX_INT_GPIO3_INT15_0);
rt_hw_interrupt_umask(IMX_INT_GPIO3_INT31_16);
rt_hw_interrupt_umask(IMX_INT_GPIO4_INT15_0);
rt_hw_interrupt_umask(IMX_INT_GPIO4_INT31_16);
rt_hw_interrupt_umask(IMX_INT_GPIO5_INT15_0);
rt_hw_interrupt_umask(IMX_INT_GPIO5_INT31_16);
}
int imx6ull_hw_pin_init(void)
{
iomuxc_base = (size_t)imx6ull_get_periph_vaddr(iomuxc_base);
iomuxc_snvs_base = (size_t)imx6ull_get_periph_vaddr(iomuxc_snvs_base);
for(int port = 0; port < sizeof(mask_tab) / sizeof(mask_tab[0]); port++)
{
mask_tab[port].gpio = (GPIO_Type *)imx6ull_get_periph_vaddr((rt_uint32_t)mask_tab[port].gpio);
CLOCK_EnableClock(mask_tab[port].gpio_clock);
}
imx6ull_pin_interrupt_install();
rt_device_pin_register("pin", &gpio_ops, RT_NULL);
rt_kprintf("pin driver init success\n");
return RT_EOK;
}
INIT_BOARD_EXPORT(imx6ull_hw_pin_init);
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