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// license:BSD-3-Clause
// copyright-holders:David Haywood

#ifndef MAME_MACHINE_VT1682_TIMER_H
#define MAME_MACHINE_VT1682_TIMER_H

#pragma once

#include "machine/timer.h"

DECLARE_DEVICE_TYPE(VT_VT1682_TIMER, vrt_vt1682_timer_device)

class vrt_vt1682_timer_device : public device_t
{
public:
	// construction/destruction
	vrt_vt1682_timer_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);

	auto write_irq_callback() { return m_irq_cb.bind(); }

	// so that we can filter logging, sound timer gets used hundreds of times a frame, so logging it is unwise
	void set_sound_timer() { m_is_sound_timer = true; }

	DECLARE_READ8_MEMBER(vt1682_timer_preload_7_0_r);
	DECLARE_WRITE8_MEMBER(vt1682_timer_preload_7_0_w);

	DECLARE_READ8_MEMBER(vt1682_timer_preload_15_8_r);
	DECLARE_WRITE8_MEMBER(vt1682_timer_preload_15_8_w);

	DECLARE_READ8_MEMBER(vt1682_timer_enable_r);
	DECLARE_WRITE8_MEMBER(vt1682_timer_enable_w);

	DECLARE_WRITE8_MEMBER(vt1682_timer_irqclear_w);

	void change_clock();

protected:
	virtual void device_start() override;
	virtual void device_reset() override;
	virtual void device_add_mconfig(machine_config &config) override;

private:
	bool m_is_sound_timer;
	required_device<timer_device> m_timer;

	void update_timer(void);

	uint8_t m_timer_preload_7_0;
	uint8_t m_timer_preload_15_8;
	uint8_t m_timer_enable;

	TIMER_DEVICE_CALLBACK_MEMBER(timer_expired);

	devcb_write_line m_irq_cb;
};

#endif // MAME_MACHINE_VT1682_TIMER_H