cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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echo3g_dsp.c (4184B)

      1/****************************************************************************
      2
      3   Copyright Echo Digital Audio Corporation (c) 1998 - 2004
      4   All rights reserved
      5   www.echoaudio.com
      6
      7   This file is part of Echo Digital Audio's generic driver library.
      8
      9   Echo Digital Audio's generic driver library is free software;
     10   you can redistribute it and/or modify it under the terms of
     11   the GNU General Public License as published by the Free Software
     12   Foundation.
     13
     14   This program is distributed in the hope that it will be useful,
     15   but WITHOUT ANY WARRANTY; without even the implied warranty of
     16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     17   GNU General Public License for more details.
     18
     19   You should have received a copy of the GNU General Public License
     20   along with this program; if not, write to the Free Software
     21   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
     22   MA  02111-1307, USA.
     23
     24   *************************************************************************
     25
     26 Translation from C++ and adaptation for use in ALSA-Driver
     27 were made by Giuliano Pochini <pochini@shiny.it>
     28
     29****************************************************************************/
     30
     31static int load_asic(struct echoaudio *chip);
     32static int dsp_set_digital_mode(struct echoaudio *chip, u8 mode);
     33static int set_digital_mode(struct echoaudio *chip, u8 mode);
     34static int check_asic_status(struct echoaudio *chip);
     35static int set_sample_rate(struct echoaudio *chip, u32 rate);
     36static int set_input_clock(struct echoaudio *chip, u16 clock);
     37static int set_professional_spdif(struct echoaudio *chip, char prof);
     38static int set_phantom_power(struct echoaudio *chip, char on);
     39static int write_control_reg(struct echoaudio *chip, u32 ctl, u32 frq,
     40			     char force);
     41
     42#include <linux/interrupt.h>
     43
     44static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
     45{
     46	int err;
     47
     48	local_irq_enable();
     49	if (snd_BUG_ON((subdevice_id & 0xfff0) != ECHO3G))
     50		return -ENODEV;
     51
     52	err = init_dsp_comm_page(chip);
     53	if (err) {
     54		dev_err(chip->card->dev,
     55			"init_hw - could not initialize DSP comm page\n");
     56		return err;
     57	}
     58
     59	chip->comm_page->e3g_frq_register =
     60		cpu_to_le32((E3G_MAGIC_NUMBER / 48000) - 2);
     61	chip->device_id = device_id;
     62	chip->subdevice_id = subdevice_id;
     63	chip->bad_board = true;
     64	chip->has_midi = true;
     65	chip->dsp_code_to_load = FW_ECHO3G_DSP;
     66
     67	/* Load the DSP code and the ASIC on the PCI card and get
     68	what type of external box is attached */
     69	err = load_firmware(chip);
     70
     71	if (err < 0) {
     72		return err;
     73	} else if (err == E3G_GINA3G_BOX_TYPE) {
     74		chip->input_clock_types =	ECHO_CLOCK_BIT_INTERNAL |
     75						ECHO_CLOCK_BIT_SPDIF |
     76						ECHO_CLOCK_BIT_ADAT;
     77		chip->card_name = "Gina3G";
     78		chip->px_digital_out = chip->bx_digital_out = 6;
     79		chip->px_analog_in = chip->bx_analog_in = 14;
     80		chip->px_digital_in = chip->bx_digital_in = 16;
     81		chip->px_num = chip->bx_num = 24;
     82		chip->has_phantom_power = true;
     83		chip->hasnt_input_nominal_level = true;
     84	} else if (err == E3G_LAYLA3G_BOX_TYPE) {
     85		chip->input_clock_types =	ECHO_CLOCK_BIT_INTERNAL |
     86						ECHO_CLOCK_BIT_SPDIF |
     87						ECHO_CLOCK_BIT_ADAT |
     88						ECHO_CLOCK_BIT_WORD;
     89		chip->card_name = "Layla3G";
     90		chip->px_digital_out = chip->bx_digital_out = 8;
     91		chip->px_analog_in = chip->bx_analog_in = 16;
     92		chip->px_digital_in = chip->bx_digital_in = 24;
     93		chip->px_num = chip->bx_num = 32;
     94	} else {
     95		return -ENODEV;
     96	}
     97
     98	chip->digital_modes =	ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_RCA |
     99				ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_OPTICAL |
    100				ECHOCAPS_HAS_DIGITAL_MODE_ADAT;
    101
    102	return err;
    103}
    104
    105
    106
    107static int set_mixer_defaults(struct echoaudio *chip)
    108{
    109	chip->digital_mode = DIGITAL_MODE_SPDIF_RCA;
    110	chip->professional_spdif = false;
    111	chip->non_audio_spdif = false;
    112	chip->bad_board = false;
    113	chip->phantom_power = false;
    114	return init_line_levels(chip);
    115}
    116
    117
    118
    119static int set_phantom_power(struct echoaudio *chip, char on)
    120{
    121	u32 control_reg = le32_to_cpu(chip->comm_page->control_register);
    122
    123	if (on)
    124		control_reg |= E3G_PHANTOM_POWER;
    125	else
    126		control_reg &= ~E3G_PHANTOM_POWER;
    127
    128	chip->phantom_power = on;
    129	return write_control_reg(chip, control_reg,
    130				 le32_to_cpu(chip->comm_page->e3g_frq_register),
    131				 0);
    132}