168 строки
4.0 KiB
C
168 строки
4.0 KiB
C
/****************************************************************************
|
|
|
|
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.
|
|
|
|
Echo Digital Audio's generic driver library is free software;
|
|
you can redistribute it and/or modify it under the terms of
|
|
the GNU General Public License as published by the Free Software
|
|
Foundation.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston,
|
|
MA 02111-1307, USA.
|
|
|
|
*************************************************************************
|
|
|
|
Translation from C++ and adaptation for use in ALSA-Driver
|
|
were made by Giuliano Pochini <pochini@shiny.it>
|
|
|
|
****************************************************************************/
|
|
|
|
|
|
static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
|
|
int gain);
|
|
static int update_vmixer_level(struct echoaudio *chip);
|
|
|
|
|
|
static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
|
|
{
|
|
int err;
|
|
|
|
if (snd_BUG_ON((subdevice_id & 0xfff0) != INDIGO_DJ))
|
|
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->device_id = device_id;
|
|
chip->subdevice_id = subdevice_id;
|
|
chip->bad_board = true;
|
|
chip->dsp_code_to_load = FW_INDIGO_DJ_DSP;
|
|
/* Since this card has no ASIC, mark it as loaded so everything
|
|
works OK */
|
|
chip->asic_loaded = true;
|
|
chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL;
|
|
|
|
err = load_firmware(chip);
|
|
if (err < 0)
|
|
return err;
|
|
chip->bad_board = false;
|
|
|
|
return err;
|
|
}
|
|
|
|
|
|
|
|
static int set_mixer_defaults(struct echoaudio *chip)
|
|
{
|
|
return init_line_levels(chip);
|
|
}
|
|
|
|
|
|
|
|
static u32 detect_input_clocks(const struct echoaudio *chip)
|
|
{
|
|
return ECHO_CLOCK_BIT_INTERNAL;
|
|
}
|
|
|
|
|
|
|
|
/* The IndigoDJ has no ASIC. Just do nothing */
|
|
static int load_asic(struct echoaudio *chip)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
static int set_sample_rate(struct echoaudio *chip, u32 rate)
|
|
{
|
|
u32 control_reg;
|
|
|
|
switch (rate) {
|
|
case 96000:
|
|
control_reg = MIA_96000;
|
|
break;
|
|
case 88200:
|
|
control_reg = MIA_88200;
|
|
break;
|
|
case 48000:
|
|
control_reg = MIA_48000;
|
|
break;
|
|
case 44100:
|
|
control_reg = MIA_44100;
|
|
break;
|
|
case 32000:
|
|
control_reg = MIA_32000;
|
|
break;
|
|
default:
|
|
dev_err(chip->card->dev,
|
|
"set_sample_rate: %d invalid!\n", rate);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Set the control register if it has changed */
|
|
if (control_reg != le32_to_cpu(chip->comm_page->control_register)) {
|
|
if (wait_handshake(chip))
|
|
return -EIO;
|
|
|
|
chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP */
|
|
chip->comm_page->control_register = cpu_to_le32(control_reg);
|
|
chip->sample_rate = rate;
|
|
|
|
clear_handshake(chip);
|
|
return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
/* This function routes the sound from a virtual channel to a real output */
|
|
static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
|
|
int gain)
|
|
{
|
|
int index;
|
|
|
|
if (snd_BUG_ON(pipe >= num_pipes_out(chip) ||
|
|
output >= num_busses_out(chip)))
|
|
return -EINVAL;
|
|
|
|
if (wait_handshake(chip))
|
|
return -EIO;
|
|
|
|
chip->vmixer_gain[output][pipe] = gain;
|
|
index = output * num_pipes_out(chip) + pipe;
|
|
chip->comm_page->vmixer[index] = gain;
|
|
|
|
dev_dbg(chip->card->dev,
|
|
"set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain);
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
/* Tell the DSP to read and update virtual mixer levels in comm page. */
|
|
static int update_vmixer_level(struct echoaudio *chip)
|
|
{
|
|
if (wait_handshake(chip))
|
|
return -EIO;
|
|
clear_handshake(chip);
|
|
return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
|
|
}
|
|
|