14e6670feSJoseph Chen /* 24e6670feSJoseph Chen * (C) Copyright 2017 Rockchip Electronics Co., Ltd 34e6670feSJoseph Chen * 44e6670feSJoseph Chen * SPDX-License-Identifier: GPL-2.0+ 54e6670feSJoseph Chen */ 64e6670feSJoseph Chen 74e6670feSJoseph Chen #ifndef _IRQ_GENERIC_H 84e6670feSJoseph Chen #define _IRQ_GENERIC_H 94e6670feSJoseph Chen 104e6670feSJoseph Chen #include <asm-generic/gpio.h> 114e6670feSJoseph Chen #include <common.h> 124e6670feSJoseph Chen #include <dt-bindings/pinctrl/rockchip.h> 134e6670feSJoseph Chen 144e6670feSJoseph Chen /* 154e6670feSJoseph Chen * IRQ line status. 164e6670feSJoseph Chen * 174e6670feSJoseph Chen * IRQ_TYPE_NONE - default, unspecified type 184e6670feSJoseph Chen * IRQ_TYPE_EDGE_RISING - rising edge triggered 194e6670feSJoseph Chen * IRQ_TYPE_EDGE_FALLING - falling edge triggered 204e6670feSJoseph Chen * IRQ_TYPE_EDGE_BOTH - rising and falling edge triggered 214e6670feSJoseph Chen * IRQ_TYPE_LEVEL_HIGH - high level triggered 224e6670feSJoseph Chen * IRQ_TYPE_LEVEL_LOW - low level triggered 234e6670feSJoseph Chen * IRQ_TYPE_LEVEL_MASK - mask to filter out the level bits 244e6670feSJoseph Chen * IRQ_TYPE_SENSE_MASK - mask for all the above bits 254e6670feSJoseph Chen */ 264e6670feSJoseph Chen enum { 274e6670feSJoseph Chen IRQ_TYPE_NONE = 0x00000000, 284e6670feSJoseph Chen IRQ_TYPE_EDGE_RISING = 0x00000001, 294e6670feSJoseph Chen IRQ_TYPE_EDGE_FALLING = 0x00000002, 304e6670feSJoseph Chen IRQ_TYPE_EDGE_BOTH = (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING), 314e6670feSJoseph Chen IRQ_TYPE_LEVEL_HIGH = 0x00000004, 324e6670feSJoseph Chen IRQ_TYPE_LEVEL_LOW = 0x00000008, 334e6670feSJoseph Chen IRQ_TYPE_LEVEL_MASK = (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH), 344e6670feSJoseph Chen IRQ_TYPE_SENSE_MASK = 0x0000000f, 354e6670feSJoseph Chen }; 364e6670feSJoseph Chen 374e6670feSJoseph Chen /* 384e6670feSJoseph Chen * struct irq_chip - hardware interrupt chip descriptor 394e6670feSJoseph Chen * 404e6670feSJoseph Chen * @name: name for irq chip 414e6670feSJoseph Chen * @irq_enable: enable the interrupt (defaults to chip->unmask if NULL) 424e6670feSJoseph Chen * @irq_disable: disable the interrupt 434e6670feSJoseph Chen * @irq_ack: start of a new interrupt 444e6670feSJoseph Chen * @irq_eoi: end of interrupt 454e6670feSJoseph Chen * @irq_set_type: set the flow type (IRQ_TYPE_LEVEL/etc.) of an IRQ 464e6670feSJoseph Chen */ 474e6670feSJoseph Chen struct irq_chip { 484e6670feSJoseph Chen const char *name; 494e6670feSJoseph Chen int (*irq_init)(void); 50*ed837edfSJoseph Chen int (*irq_suspend)(void); 51*ed837edfSJoseph Chen int (*irq_resume)(void); 524e6670feSJoseph Chen int (*irq_get)(void); 534e6670feSJoseph Chen int (*irq_enable)(int irq); 544e6670feSJoseph Chen int (*irq_disable)(int irq); 554e6670feSJoseph Chen void (*irq_ack)(int irq); 564e6670feSJoseph Chen void (*irq_eoi)(int irq); 574e6670feSJoseph Chen int (*irq_set_type)(int irq, unsigned int flow_type); 584e6670feSJoseph Chen }; 594e6670feSJoseph Chen 604e6670feSJoseph Chen /* APIs for irqs */ 614e6670feSJoseph Chen void irq_install_handler(int irq, interrupt_handler_t *handler, void *data); 624e6670feSJoseph Chen void irq_free_handler(int irq); 634e6670feSJoseph Chen int irq_set_irq_type(int irq, unsigned int type); 644e6670feSJoseph Chen int irq_handler_enable(int irq); 654e6670feSJoseph Chen int irq_handler_disable(int irq); 66*ed837edfSJoseph Chen int irqs_suspend(void); 67*ed837edfSJoseph Chen int irqs_resume(void); 684e6670feSJoseph Chen int gpio_to_irq(struct gpio_desc *gpio); 694e6670feSJoseph Chen 704e6670feSJoseph Chen /* 714e6670feSJoseph Chen * Assign gpio to irq directly. Don't use it without special reasons. 724e6670feSJoseph Chen * 734e6670feSJoseph Chen * Usage example: 744e6670feSJoseph Chen * int gpio0_a0, irq; 754e6670feSJoseph Chen * 764e6670feSJoseph Chen * gpio = RK_IRQ_GPIO(RK_GPIO0, RK_PA0); 774e6670feSJoseph Chen * irq = hard_gpio_to_irq(gpio0_a0); 784e6670feSJoseph Chen * irq_install_handler(irq, ...); 794e6670feSJoseph Chen */ 804e6670feSJoseph Chen #define GPIO_BANK_SHIFT 8 814e6670feSJoseph Chen #define RK_IRQ_GPIO(bank, pin) (((bank) << GPIO_BANK_SHIFT) | (pin)) 824e6670feSJoseph Chen int hard_gpio_to_irq(unsigned gpio); 835db1153eSJoseph Chen int phandle_gpio_to_irq(u32 gpio_phandle, u32 pin); 844e6670feSJoseph Chen 854e6670feSJoseph Chen /* only irq-gpio.c can use it */ 8642865eb5SJoseph Chen void _generic_gpio_handle_irq(int irq); 874e6670feSJoseph Chen 884e6670feSJoseph Chen #endif /* _IRQ_GENERIC_H */ 89