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// SPDX-License-Identifier: Apache-2.0
/* Copyright 2019 IBM Corp. */
#ifndef __DIO_H
#define __DIO_H
struct proc_chip;
/* Initialize the P9 DIO */
extern void p9_dio_init(void);
/* The function typedef for dio interrupt callback */
typedef void (*dio_interrupt_callback)(struct proc_chip *chip);
/* Register dio interrupt on GPIO port.
* This effectively enables the DIO interrupt on the GPIO port,
* and callback will be called when the interrupt is triggered */
extern int dio_interrupt_register(struct proc_chip *chip,
int port, dio_interrupt_callback c);
/* Deregister dio interrupt on GPIO port.
* This effectively disables the DIO interrupt on the GPIO port. */
extern int dio_interrupt_deregister(struct proc_chip *chip,
int port, dio_interrupt_callback c);
/* The function to be called when DIO interrupt is triggered */
extern void dio_interrupt_handler(uint32_t chip_id);
#define NUM_OF_P9_DIO_PORTS 3 /* P9 has GPIO port 0~2 for interrupts */
struct p9_dio {
dio_interrupt_callback callbacks[NUM_OF_P9_DIO_PORTS];
};
#endif /* __DIO_H */
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