// 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);
}