sound/pci/echoaudio/indigo_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         DE_INIT(("init_hw() - Indigo\n"));
  42         if (snd_BUG_ON((subdevice_id & 0xfff0) != INDIGO))
  43                 return -ENODEV;
  44
  45         if ((err = init_dsp_comm_page(chip))) {
  46                 DE_INIT(("init_hw - could not initialize DSP comm page\n"));
  47                 return err;
  48         }
  49
  50         chip->device_id = device_id;
  51         chip->subdevice_id = subdevice_id;
  52         chip->bad_board = TRUE;
  53         chip->dsp_code_to_load = &card_fw[FW_INDIGO_DSP];
  54         /* Since this card has no ASIC, mark it as loaded so everything
  55            works OK */
  56         chip->asic_loaded = TRUE;
  57         chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL;
  58
  59         if ((err = load_firmware(chip)) < 0)
  60                 return err;
  61         chip->bad_board = FALSE;
  62
  63         if ((err = init_line_levels(chip)) < 0)
  64                 return err;
  65
  66         DE_INIT(("init_hw done\n"));
  67         return err;
  68 }
  69
  70
  71
  72 static u32 detect_input_clocks(const struct echoaudio *chip)
  73 {
  74         return ECHO_CLOCK_BIT_INTERNAL;
  75 }
  76
  77
  78
  79 /* The Indigo has no ASIC. Just do nothing */
  80 static int load_asic(struct echoaudio *chip)
  81 {
  82         return 0;
  83 }
  84
  85
  86
  87 static int set_sample_rate(struct echoaudio *chip, u32 rate)
  88 {
  89         u32 control_reg;
  90
  91         switch (rate) {
  92         case 96000:
  93                 control_reg = MIA_96000;
  94                 break;
  95         case 88200:
  96                 control_reg = MIA_88200;
  97                 break;
  98         case 48000:
  99                 control_reg = MIA_48000;
 100                 break;
 101         case 44100:
 102                 control_reg = MIA_44100;
 103                 break;
 104         case 32000:
 105                 control_reg = MIA_32000;
 106                 break;
 107         default:
 108                 DE_ACT(("set_sample_rate: %d invalid!\n", rate));
 109                 return -EINVAL;
 110         }
 111
 112         /* Set the control register if it has changed */
 113         if (control_reg != le32_to_cpu(chip->comm_page->control_register)) {
 114                 if (wait_handshake(chip))
 115                         return -EIO;
 116
 117                 chip->comm_page->sample_rate = cpu_to_le32(rate);       /* ignored by the DSP */
 118                 chip->comm_page->control_register = cpu_to_le32(control_reg);
 119                 chip->sample_rate = rate;
 120
 121                 clear_handshake(chip);
 122                 return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
 123         }
 124         return 0;
 125 }
 126
 127
 128
 129 /* This function routes the sound from a virtual channel to a real output */
 130 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
 131                            int gain)
 132 {
 133         int index;
 134
 135         if (snd_BUG_ON(pipe >= num_pipes_out(chip) ||
 136                        output >= num_busses_out(chip)))
 137                 return -EINVAL;
 138
 139         if (wait_handshake(chip))
 140                 return -EIO;
 141
 142         chip->vmixer_gain[output][pipe] = gain;
 143         index = output * num_pipes_out(chip) + pipe;
 144         chip->comm_page->vmixer[index] = gain;
 145
 146         DE_ACT(("set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain));
 147         return 0;
 148 }
 149
 150
 151
 152 /* Tell the DSP to read and update virtual mixer levels in comm page. */
 153 static int update_vmixer_level(struct echoaudio *chip)
 154 {
 155         if (wait_handshake(chip))
 156                 return -EIO;
 157         clear_handshake(chip);
 158         return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
 159 }
 160