/*
 * buttons.h
 *
 *  Created on: Apr 27, 2018
 *      Author: leonid
 */

#ifndef IO_MODULE_BUTTONS_H_
#define IO_MODULE_BUTTONS_H_

#include <linux/delay.h>
#include <linux/ioctl.h>
#include <linux/input.h>
#include <linux/cdev.h>
#include <linux/clk.h>
#include <linux/sched.h>
#include <linux/reboot.h>
#include <linux/uaccess.h>
#include <linux/gpio.h>
#include <linux/sched.h>
#include <linux/workqueue.h>
#include <linux/platform_device.h>
#include <linux/device.h>
#include <linux/bitops.h>
#include <linux/spi/spi.h>
#include <linux/kmod.h>
#include <linux/ctype.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/version.h>
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)
#include <linux/signalfd.h>
#endif

#include "mts_io_module.h"
#include "mts_io.h"
#include "version.h"

#define BUTTON_CHECK_PER_SEC        8
#define BUTTON_INTERVAL             (HZ / BUTTON_CHECK_PER_SEC)
#define BUTTON_HOLD_COUNT           (BUTTON_CHECK_PER_SEC * 3)
#define BUTTON_LONG_HOLD_COUNT      (BUTTON_CHECK_PER_SEC * 30)

typedef struct button_info {
    char name[32];
    char label_pin[32];
    char label_monitor[32];
    char label_monitor_intervals[32];

    /* PID to notify */
    pid_t pid;

    /* Unix signals */
    int short_signal;
    int long_signal;
    int extra_long_signal;

    /* Monitor intervals */
    int short_interval;
    int long_interval;

    /* Internal fields */
    int pressed_count;
    bool sent_extra_long;
} button_info_t, *button_info_pt;

extern void init_buttons(void);
extern void cleanup_buttons(void);
extern int set_buttons (button_info_pt* platform_buttons);

extern ssize_t mts_attr_show_button_monitor_intervals(struct device *dev, struct device_attribute *attr, char *buf);
extern ssize_t mts_attr_store_button_monitor_intervals(struct device *dev, struct device_attribute *attr, const char *buf, size_t count);
extern ssize_t mts_attr_show_button_monitor(struct device *dev,
        struct device_attribute *attr,
        char *buf);
extern ssize_t mts_attr_store_button_monitor(struct device *dev,
        struct device_attribute *attr, const char *buf, size_t count);

// Reset button is common for all devices. It is defined in buttons.c

extern button_info_t reset_button;
extern struct device_attribute dev_attr_reset_monitor_intervals;
extern struct device_attribute dev_attr_reset_monitor;
extern struct device_attribute dev_attr_reset;
extern button_info_pt default_buttons[];

#endif /* IO_MODULE_BUTTONS_H_ */