// license:BSD-3-Clause
// copyright-holders:Ryan Holtz
/***************************************************************************

	Philips UCB1200 Advanced modem/audio analog front-end skeleton

***************************************************************************/

#ifndef MAME_MACHINE_UCB1200
#define MAME_MACHINE_UCB1200

#pragma once

class ucb1200_device : public device_t
{
public:
	ucb1200_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);

	template <unsigned Line> auto gpio_out() { return m_gpio_out[Line].bind(); }
	template <unsigned Line> void gpio_in(int state) { gpio_in((uint16_t)Line, state); }
	template <unsigned N> auto adc_in() { return m_adc_in[N].bind(); }
	auto audio_sample_out() { return m_audio_out.bind(); }
	auto telecom_sample_out() { return m_telecom_out.bind(); }
	auto irq_out() { return m_irq_out.bind(); }

	void audio_sample_in(const uint16_t sample);
	void telecom_sample_in(const uint16_t sample);

	uint16_t read(offs_t offset);
	void write(offs_t offset, uint16_t data);

protected:
	virtual void device_start() override;
	virtual void device_reset() override;

	void gpio_in(const uint16_t line, const int state);
	void update_gpio_direction(const uint16_t old_dir);
	void update_gpio_outputs(const uint16_t old_latch, const uint16_t changed);

	void adc_begin_conversion();

	// register contents
	enum : uint16_t
	{
		SIB_ZERO_BIT		= 15,

		IO_INT0_BIT			= 0,
		ADC_INT_BIT			= 11,
		TSPX_INT_BIT		= 12,
		TSMX_INT_BIT		= 13,
		TCLIP_INT_BIT		= 14,
		ACLIP_INT_BIT		= 15,

		TEL_DIV_BIT			= 0,
		TEL_DIV_MASK		= 0x007f,
		TEL_LOOP_BIT		= 7,

		TEL_VOICE_ENA_BIT	= 3,
		TEL_CLIP_BIT		= 4,
		TEL_ATT_BIT			= 6,
		TEL_SIDE_ENA_BIT	= 11,
		TEL_MUTE_BIT		= 13,
		TEL_IN_ENA_BIT		= 14,
		TEL_OUT_ENA_BIT		= 15,

		AUD_DIV_BIT			= 0,
		AUD_DIV_MASK		= 0x007f,
		AUD_GAIN_BIT		= 7,
		AUD_GAIN_MASK		= 0x0f80,

		AUD_ATT_BIT			= 0,
		AUD_ATT_MASK		= 0x001f,
		AUD_CLIP_BIT		= 6,
		AUD_LOOP_BIT		= 8,
		AUD_MUTE_BIT		= 13,
		AUD_IN_ENA_BIT		= 14,
		AUD_OUT_ENA_BIT		= 15,

		TSMX_POW_BIT		= 0,
		TSPX_POW_BIT		= 1,
		TSMY_POW_BIT		= 2,
		TSPY_POW_BIT		= 3,
		TSMX_GND_BIT		= 4,
		TSPX_GND_BIT		= 5,
		TSMY_GND_BIT		= 6,
		TSPY_GND_BIT		= 7,
		TSC_MODE_BIT		= 8,
		TSC_MODE_MASK		= 0x0300,
		TSC_BIAS_ENA_BIT	= 11,
		TSPX_LOW_BIT		= 12,
		TSMX_LOW_BIT		= 13,
		TOUCH_WRITE_MASK	= 0x0fff,

		ADC_SYNC_ENA_BIT	= 0,
		VREFBYP_CON_BIT		= 1,
		ADC_INPUT_BIT		= 2,
		ADC_INPUT_MASK		= 0x001c,
		ADC_INPUT_TSPX		= 0,
		ADC_INPUT_TSMX		= 1,
		ADC_INPUT_TSPY		= 2,
		ADC_INPUT_TSMY		= 3,
		ADC_INPUT_AD0		= 4,
		ADC_INPUT_AD1		= 5,
		ADC_INPUT_AD2		= 6,
		ADC_INPUT_AD3		= 7,
		EXT_REF_ENA_BIT		= 5,
		ADC_START_BIT		= 7,
		ADC_ENA_BIT			= 15,

		ADC_DATA_BIT		= 5,
		ADC_DATA_MASK		= 0x7fe0,
		ADC_DAT_VAL_BIT		= 15,

		AUD_TEST_BIT		= 0,
		TEL_TEST_BIT		= 1,
		PROD_TEST_MODE_BIT	= 2,
		PROD_TEST_MODE_MASK	= 0x003c,
		DYN_VFLAG_ENA_BIT	= 12,
		AUD_OFF_CAN_BIT		= 13
	};

	uint16_t m_gpio_out_latch;
	uint16_t m_gpio_in_latch;
	uint16_t m_gpio_dir;
	uint16_t m_rising_int_en;
	uint16_t m_falling_int_en;
	uint16_t m_int_status;
	uint16_t m_telecom_ctrl_a;
	uint16_t m_telecom_ctrl_b;
	uint16_t m_audio_ctrl_a;
	uint16_t m_audio_ctrl_b;
	uint16_t m_touch_ctrl;
	uint16_t m_adc_ctrl;
	uint16_t m_adc_data;
	uint16_t m_id;
	uint16_t m_mode;

	devcb_write_line::array<10> m_gpio_out;
	devcb_write16 m_audio_out;
	devcb_write16 m_telecom_out;
	devcb_write_line m_irq_out;
	devcb_read16::array<4> m_adc_in;
};

DECLARE_DEVICE_TYPE(UCB1200, ucb1200_device)

#endif // MAME_MACHINE_UCB1200