pci/echoaudio/indigoio_dsp.c

0001 /****************************************************************************
0002
0003    Copyright Echo Digital Audio Corporation (c) 1998 - 2004
0004    All rights reserved
0005    www.echoaudio.com
0006
0007    This file is part of Echo Digital Audio's generic driver library.
0008
0009    Echo Digital Audio's generic driver library is free software;
0010    you can redistribute it and/or modify it under the terms of
0011    the GNU General Public License as published by the Free Software
0012    Foundation.
0013
0014    This program is distributed in the hope that it will be useful,
0015    but WITHOUT ANY WARRANTY; without even the implied warranty of
0016    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
0017    GNU General Public License for more details.
0018
0019    You should have received a copy of the GNU General Public License
0020    along with this program; if not, write to the Free Software
0021    Foundation, Inc., 59 Temple Place - Suite 330, Boston,
0022    MA  02111-1307, USA.
0023
0024    *************************************************************************
0025
0026  Translation from C++ and adaptation for use in ALSA-Driver
0027  were made by Giuliano Pochini <pochini@shiny.it>
0028
0029 ****************************************************************************/
0030
0031
0032 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
0033                int gain);
0034 static int update_vmixer_level(struct echoaudio *chip);
0035
0036
0037 static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
0038 {
0039     int err;
0040
0041     if (snd_BUG_ON((subdevice_id & 0xfff0) != INDIGO_IO))
0042         return -ENODEV;
0043
0044     err = init_dsp_comm_page(chip);
0045     if (err) {
0046         dev_err(chip->card->dev,
0047             "init_hw - could not initialize DSP comm page\n");
0048         return err;
0049     }
0050
0051     chip->device_id = device_id;
0052     chip->subdevice_id = subdevice_id;
0053     chip->bad_board = true;
0054     chip->dsp_code_to_load = FW_INDIGO_IO_DSP;
0055     /* Since this card has no ASIC, mark it as loaded so everything
0056        works OK */
0057     chip->asic_loaded = true;
0058     chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL;
0059
0060     err = load_firmware(chip);
0061     if (err < 0)
0062         return err;
0063     chip->bad_board = false;
0064
0065     return err;
0066 }
0067
0068
0069
0070 static int set_mixer_defaults(struct echoaudio *chip)
0071 {
0072     return init_line_levels(chip);
0073 }
0074
0075
0076
0077 static u32 detect_input_clocks(const struct echoaudio *chip)
0078 {
0079     return ECHO_CLOCK_BIT_INTERNAL;
0080 }
0081
0082
0083
0084 /* The IndigoIO has no ASIC. Just do nothing */
0085 static int load_asic(struct echoaudio *chip)
0086 {
0087     return 0;
0088 }
0089
0090
0091
0092 static int set_sample_rate(struct echoaudio *chip, u32 rate)
0093 {
0094     if (wait_handshake(chip))
0095         return -EIO;
0096
0097     chip->sample_rate = rate;
0098     chip->comm_page->sample_rate = cpu_to_le32(rate);
0099     clear_handshake(chip);
0100     return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
0101 }
0102
0103
0104
0105 /* This function routes the sound from a virtual channel to a real output */
0106 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
0107                int gain)
0108 {
0109     int index;
0110
0111     if (snd_BUG_ON(pipe >= num_pipes_out(chip) ||
0112                output >= num_busses_out(chip)))
0113         return -EINVAL;
0114
0115     if (wait_handshake(chip))
0116         return -EIO;
0117
0118     chip->vmixer_gain[output][pipe] = gain;
0119     index = output * num_pipes_out(chip) + pipe;
0120     chip->comm_page->vmixer[index] = gain;
0121
0122     dev_dbg(chip->card->dev,
0123         "set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain);
0124     return 0;
0125 }
0126
0127
0128
0129 /* Tell the DSP to read and update virtual mixer levels in comm page. */
0130 static int update_vmixer_level(struct echoaudio *chip)
0131 {
0132     if (wait_handshake(chip))
0133         return -EIO;
0134     clear_handshake(chip);
0135     return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
0136 }
0137