sound/pci/echoaudio/indigoio_dsp.c

   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
  31
  32 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
  33                            int gain);
  34 static int update_vmixer_level(struct echoaudio *chip);
  35
  36
  37 static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
  38 {
  39         int err;
  40
  41         if (snd_BUG_ON((subdevice_id & 0xfff0) != INDIGO_IO))
  42                 return -ENODEV;
  43
  44         err = init_dsp_comm_page(chip);
  45         if (err) {
  46                 dev_err(chip->card->dev,
  47                         "init_hw - could not initialize DSP comm page\n");
  48                 return err;
  49         }
  50
  51         chip->device_id = device_id;
  52         chip->subdevice_id = subdevice_id;
  53         chip->bad_board = true;
  54         chip->dsp_code_to_load = FW_INDIGO_IO_DSP;
  55         /* Since this card has no ASIC, mark it as loaded so everything
  56            works OK */
  57         chip->asic_loaded = true;
  58         chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL;
  59
  60         err = load_firmware(chip);
  61         if (err < 0)
  62                 return err;
  63         chip->bad_board = false;
  64
  65         return err;
  66 }
  67
  68
  69
  70 static int set_mixer_defaults(struct echoaudio *chip)
  71 {
  72         return init_line_levels(chip);
  73 }
  74
  75
  76
  77 static u32 detect_input_clocks(const struct echoaudio *chip)
  78 {
  79         return ECHO_CLOCK_BIT_INTERNAL;
  80 }
  81
  82
  83
  84 /* The IndigoIO has no ASIC. Just do nothing */
  85 static int load_asic(struct echoaudio *chip)
  86 {
  87         return 0;
  88 }
  89
  90
  91
  92 static int set_sample_rate(struct echoaudio *chip, u32 rate)
  93 {
  94         if (wait_handshake(chip))
  95                 return -EIO;
  96
  97         chip->sample_rate = rate;
  98         chip->comm_page->sample_rate = cpu_to_le32(rate);
  99         clear_handshake(chip);
 100         return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
 101 }
 102
 103
 104
 105 /* This function routes the sound from a virtual channel to a real output */
 106 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
 107                            int gain)
 108 {
 109         int index;
 110
 111         if (snd_BUG_ON(pipe >= num_pipes_out(chip) ||
 112                        output >= num_busses_out(chip)))
 113                 return -EINVAL;
 114
 115         if (wait_handshake(chip))
 116                 return -EIO;
 117
 118         chip->vmixer_gain[output][pipe] = gain;
 119         index = output * num_pipes_out(chip) + pipe;
 120         chip->comm_page->vmixer[index] = gain;
 121
 122         dev_dbg(chip->card->dev,
 123                 "set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain);
 124         return 0;
 125 }
 126
 127
 128
 129 /* Tell the DSP to read and update virtual mixer levels in comm page. */
 130 static int update_vmixer_level(struct echoaudio *chip)
 131 {
 132         if (wait_handshake(chip))
 133                 return -EIO;
 134         clear_handshake(chip);
 135         return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
 136 }
 137