135 строки
4.3 KiB
C
135 строки
4.3 KiB
C
/****************************************************************************
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Copyright Echo Digital Audio Corporation (c) 1998 - 2004
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All rights reserved
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www.echoaudio.com
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This file is part of Echo Digital Audio's generic driver library.
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Echo Digital Audio's generic driver library is free software;
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you can redistribute it and/or modify it under the terms of
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the GNU General Public License as published by the Free Software
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Foundation.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA.
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*************************************************************************
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Translation from C++ and adaptation for use in ALSA-Driver
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were made by Giuliano Pochini <pochini@shiny.it>
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****************************************************************************/
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static int load_asic(struct echoaudio *chip);
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static int dsp_set_digital_mode(struct echoaudio *chip, u8 mode);
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static int set_digital_mode(struct echoaudio *chip, u8 mode);
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static int check_asic_status(struct echoaudio *chip);
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static int set_sample_rate(struct echoaudio *chip, u32 rate);
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static int set_input_clock(struct echoaudio *chip, u16 clock);
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static int set_professional_spdif(struct echoaudio *chip, char prof);
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static int set_phantom_power(struct echoaudio *chip, char on);
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static int write_control_reg(struct echoaudio *chip, u32 ctl, u32 frq,
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char force);
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#include <linux/interrupt.h>
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static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
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{
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int err;
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local_irq_enable();
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DE_INIT(("init_hw() - Echo3G\n"));
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if (snd_BUG_ON((subdevice_id & 0xfff0) != ECHO3G))
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return -ENODEV;
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if ((err = init_dsp_comm_page(chip))) {
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DE_INIT(("init_hw - could not initialize DSP comm page\n"));
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return err;
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}
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chip->comm_page->e3g_frq_register =
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cpu_to_le32((E3G_MAGIC_NUMBER / 48000) - 2);
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chip->device_id = device_id;
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chip->subdevice_id = subdevice_id;
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chip->bad_board = TRUE;
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chip->has_midi = TRUE;
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chip->dsp_code_to_load = &card_fw[FW_ECHO3G_DSP];
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/* Load the DSP code and the ASIC on the PCI card and get
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what type of external box is attached */
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err = load_firmware(chip);
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if (err < 0) {
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return err;
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} else if (err == E3G_GINA3G_BOX_TYPE) {
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chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL |
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ECHO_CLOCK_BIT_SPDIF |
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ECHO_CLOCK_BIT_ADAT;
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chip->card_name = "Gina3G";
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chip->px_digital_out = chip->bx_digital_out = 6;
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chip->px_analog_in = chip->bx_analog_in = 14;
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chip->px_digital_in = chip->bx_digital_in = 16;
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chip->px_num = chip->bx_num = 24;
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chip->has_phantom_power = TRUE;
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chip->hasnt_input_nominal_level = TRUE;
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} else if (err == E3G_LAYLA3G_BOX_TYPE) {
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chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL |
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ECHO_CLOCK_BIT_SPDIF |
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ECHO_CLOCK_BIT_ADAT |
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ECHO_CLOCK_BIT_WORD;
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chip->card_name = "Layla3G";
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chip->px_digital_out = chip->bx_digital_out = 8;
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chip->px_analog_in = chip->bx_analog_in = 16;
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chip->px_digital_in = chip->bx_digital_in = 24;
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chip->px_num = chip->bx_num = 32;
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} else {
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return -ENODEV;
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}
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chip->digital_modes = ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_RCA |
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ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_OPTICAL |
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ECHOCAPS_HAS_DIGITAL_MODE_ADAT;
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chip->digital_mode = DIGITAL_MODE_SPDIF_RCA;
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chip->professional_spdif = FALSE;
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chip->non_audio_spdif = FALSE;
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chip->bad_board = FALSE;
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if ((err = init_line_levels(chip)) < 0)
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return err;
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err = set_digital_mode(chip, DIGITAL_MODE_SPDIF_RCA);
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if (err < 0)
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return err;
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err = set_phantom_power(chip, 0);
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if (err < 0)
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return err;
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err = set_professional_spdif(chip, TRUE);
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DE_INIT(("init_hw done\n"));
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return err;
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}
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static int set_phantom_power(struct echoaudio *chip, char on)
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{
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u32 control_reg = le32_to_cpu(chip->comm_page->control_register);
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if (on)
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control_reg |= E3G_PHANTOM_POWER;
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else
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control_reg &= ~E3G_PHANTOM_POWER;
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chip->phantom_power = on;
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return write_control_reg(chip, control_reg,
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le32_to_cpu(chip->comm_page->e3g_frq_register),
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0);
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}
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