// SPDX-License-Identifier: GPL-2.0-only
/****************************************************************************

   Copyright Echo Digital Audio Corporation (c) 1998 - 2004
   All rights reserved
   www.echoaudio.com

   This file is part of Echo Digital Audio's generic driver library.
   *************************************************************************

 Translation from C++ and adaptation for use in ALSA-Driver
 were made by Giuliano Pochini <pochini@shiny.it>

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

static int load_asic(struct echoaudio *chip);
static int dsp_set_digital_mode(struct echoaudio *chip, u8 mode);
static int set_digital_mode(struct echoaudio *chip, u8 mode);
static int check_asic_status(struct echoaudio *chip);
static int set_sample_rate(struct echoaudio *chip, u32 rate);
static int set_input_clock(struct echoaudio *chip, u16 clock);
static int set_professional_spdif(struct echoaudio *chip, char prof);
static int set_phantom_power(struct echoaudio *chip, char on);
static int write_control_reg(struct echoaudio *chip, u32 ctl, u32 frq,
			     char force);

#include <linux/interrupt.h>

static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
{
	int err;

	local_irq_enable();
	if (snd_BUG_ON((subdevice_id & 0xfff0) != ECHO3G))
		return -ENODEV;

	err = init_dsp_comm_page(chip);
	if (err) {
		dev_err(chip->card->dev,
			"init_hw - could not initialize DSP comm page\n");
		return err;
	}

	chip->comm_page->e3g_frq_register =
		cpu_to_le32((E3G_MAGIC_NUMBER / 48000) - 2);
	chip->device_id = device_id;
	chip->subdevice_id = subdevice_id;
	chip->bad_board = true;
	chip->has_midi = true;
	chip->dsp_code_to_load = FW_ECHO3G_DSP;

	/* Load the DSP code and the ASIC on the PCI card and get
	what type of external box is attached */
	err = load_firmware(chip);

	if (err < 0) {
		return err;
	} else if (err == E3G_GINA3G_BOX_TYPE) {
		chip->input_clock_types =	ECHO_CLOCK_BIT_INTERNAL |
						ECHO_CLOCK_BIT_SPDIF |
						ECHO_CLOCK_BIT_ADAT;
		chip->card_name = "Gina3G";
		chip->px_digital_out = chip->bx_digital_out = 6;
		chip->px_analog_in = chip->bx_analog_in = 14;
		chip->px_digital_in = chip->bx_digital_in = 16;
		chip->px_num = chip->bx_num = 24;
		chip->has_phantom_power = true;
		chip->hasnt_input_nominal_level = true;
	} else if (err == E3G_LAYLA3G_BOX_TYPE) {
		chip->input_clock_types =	ECHO_CLOCK_BIT_INTERNAL |
						ECHO_CLOCK_BIT_SPDIF |
						ECHO_CLOCK_BIT_ADAT |
						ECHO_CLOCK_BIT_WORD;
		chip->card_name = "Layla3G";
		chip->px_digital_out = chip->bx_digital_out = 8;
		chip->px_analog_in = chip->bx_analog_in = 16;
		chip->px_digital_in = chip->bx_digital_in = 24;
		chip->px_num = chip->bx_num = 32;
	} else {
		return -ENODEV;
	}

	chip->digital_modes =	ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_RCA |
				ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_OPTICAL |
				ECHOCAPS_HAS_DIGITAL_MODE_ADAT;

	return err;
}



static int set_mixer_defaults(struct echoaudio *chip)
{
	chip->digital_mode = DIGITAL_MODE_SPDIF_RCA;
	chip->professional_spdif = false;
	chip->non_audio_spdif = false;
	chip->bad_board = false;
	chip->phantom_power = false;
	return init_line_levels(chip);
}



static int set_phantom_power(struct echoaudio *chip, char on)
{
	u32 control_reg = le32_to_cpu(chip->comm_page->control_register);

	if (on)
		control_reg |= E3G_PHANTOM_POWER;
	else
		control_reg &= ~E3G_PHANTOM_POWER;

	chip->phantom_power = on;
	return write_control_reg(chip, control_reg,
				 le32_to_cpu(chip->comm_page->e3g_frq_register),
				 0);
}