gpio.h

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#ifndef __COREBOOT_SRC_SOC_ROCKCHIP_COMMON_INCLUDE_SOC_GPIO_H
#define __COREBOOT_SRC_SOC_ROCKCHIP_COMMON_INCLUDE_SOC_GPIO_H
 
#include <types.h>
 
#define GPIO(p, b, i) ((gpio_t){.port = p, .bank = GPIO_##b, .idx = i})
 
struct rockchip_gpio_regs {
        u32 swporta_dr;
        u32 swporta_ddr;
        u32 reserved0[(0x30 - 0x08) / 4];
        u32 inten;
        u32 intmask;
        u32 inttype_level;
        u32 int_polarity;
        u32 int_status;
        u32 int_rawstatus;
        u32 debounce;
        u32 porta_eoi;
        u32 ext_porta;
        u32 reserved1[(0x60 - 0x54) / 4];
        u32 ls_sync;
};
check_member(rockchip_gpio_regs, ls_sync, 0x60);
 
typedef union {
        u32 raw;
        struct {
                union {
                        struct {
                                u32 num : 5;
                                u32 reserved1 : 27;
                        };
                        struct {
                                u32 idx : 3;
                                u32 bank : 2;
                                u32 port : 4;
                                u32 reserved2 : 23;
                        };
                };
        };
} gpio_t;
 
enum {
        GPIO_A = 0,
        GPIO_B,
        GPIO_C,
        GPIO_D,
};
 
extern struct rockchip_gpio_regs *gpio_port[];
 
/* Check if the gpio port is a pmu gpio */
int is_pmu_gpio(gpio_t gpio);
 
/* Return the io addr of gpio register */
void *gpio_grf_reg(gpio_t gpio);
 
enum gpio_pull {
        GPIO_PULLNONE = 0,
        GPIO_PULLUP = 1,
        GPIO_PULLDOWN = 2,
};
 
enum gpio_dir {
        GPIO_INPUT = 0,
        GPIO_OUTPUT = 1,
};
 
enum gpio_irq_type {
        IRQ_TYPE_EDGE_RISING = 0,
        IRQ_TYPE_EDGE_FALLING,
        IRQ_TYPE_LEVEL_HIGH,
        IRQ_TYPE_LEVEL_LOW,
};
 
/* Setup and enable irq */
void gpio_input_irq(gpio_t gpio, enum gpio_irq_type type, enum gpio_pull pull);
 
/* Check and clear irq status */
int gpio_irq_status(gpio_t gpio);
 
/* The gpio pull bias setting may be different between SoCs */
u32 gpio_get_pull_val(gpio_t gpio, enum gpio_pull pull);
 
#endif