sound/pci/echoaudio/echoaudio_gml.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 /* These functions are common for Gina24, Layla24 and Mona cards */
  33
  34
  35 /* ASIC status check - some cards have one or two ASICs that need to be
  36 loaded.  Once that load is complete, this function is called to see if
  37 the load was successful.
  38 If this load fails, it does not necessarily mean that the hardware is
  39 defective - the external box may be disconnected or turned off. */
  40 static int check_asic_status(struct echoaudio *chip)
  41 {
  42         u32 asic_status;
  43
  44         send_vector(chip, DSP_VC_TEST_ASIC);
  45
  46         /* The DSP will return a value to indicate whether or not the
  47            ASIC is currently loaded */
  48         if (read_dsp(chip, &asic_status) < 0) {
  49                 DE_INIT(("check_asic_status: failed on read_dsp\n"));
  50                 chip->asic_loaded = FALSE;
  51                 return -EIO;
  52         }
  53
  54         chip->asic_loaded = (asic_status == ASIC_ALREADY_LOADED);
  55         return chip->asic_loaded ? 0 : -EIO;
  56 }
  57
  58
  59
  60 /* Most configuration of Gina24, Layla24, or Mona is accomplished by writing
  61 the control register.  write_control_reg sends the new control register
  62 value to the DSP. */
  63 static int write_control_reg(struct echoaudio *chip, u32 value, char force)
  64 {
  65         /* Handle the digital input auto-mute */
  66         if (chip->digital_in_automute)
  67                 value |= GML_DIGITAL_IN_AUTO_MUTE;
  68         else
  69                 value &= ~GML_DIGITAL_IN_AUTO_MUTE;
  70
  71         DE_ACT(("write_control_reg: 0x%x\n", value));
  72
  73         /* Write the control register */
  74         value = cpu_to_le32(value);
  75         if (value != chip->comm_page->control_register || force) {
  76                 if (wait_handshake(chip))
  77                         return -EIO;
  78                 chip->comm_page->control_register = value;
  79                 clear_handshake(chip);
  80                 return send_vector(chip, DSP_VC_WRITE_CONTROL_REG);
  81         }
  82         return 0;
  83 }
  84
  85
  86
  87 /* Gina24, Layla24, and Mona support digital input auto-mute.  If the digital
  88 input auto-mute is enabled, the DSP will only enable the digital inputs if
  89 the card is syncing to a valid clock on the ADAT or S/PDIF inputs.
  90 If the auto-mute is disabled, the digital inputs are enabled regardless of
  91 what the input clock is set or what is connected. */
  92 static int set_input_auto_mute(struct echoaudio *chip, int automute)
  93 {
  94         DE_ACT(("set_input_auto_mute %d\n", automute));
  95
  96         chip->digital_in_automute = automute;
  97
  98         /* Re-set the input clock to the current value - indirectly causes
  99         the auto-mute flag to be sent to the DSP */
 100         return set_input_clock(chip, chip->input_clock);
 101 }
 102
 103
 104
 105 /* S/PDIF coax / S/PDIF optical / ADAT - switch */
 106 static int set_digital_mode(struct echoaudio *chip, u8 mode)
 107 {
 108         u8 previous_mode;
 109         int err, i, o;
 110
 111         if (chip->bad_board)
 112                 return -EIO;
 113
 114         /* All audio channels must be closed before changing the digital mode */
 115         snd_assert(!chip->pipe_alloc_mask, return -EAGAIN);
 116
 117         snd_assert(chip->digital_modes & (1 << mode), return -EINVAL);
 118
 119         previous_mode = chip->digital_mode;
 120         err = dsp_set_digital_mode(chip, mode);
 121
 122         /* If we successfully changed the digital mode from or to ADAT,
 123            then make sure all output, input and monitor levels are
 124            updated by the DSP comm object. */
 125         if (err >= 0 && previous_mode != mode &&
 126             (previous_mode == DIGITAL_MODE_ADAT || mode == DIGITAL_MODE_ADAT)) {
 127                 spin_lock_irq(&chip->lock);
 128                 for (o = 0; o < num_busses_out(chip); o++)
 129                         for (i = 0; i < num_busses_in(chip); i++)
 130                                 set_monitor_gain(chip, o, i,
 131                                                  chip->monitor_gain[o][i]);
 132
 133 #ifdef ECHOCARD_HAS_INPUT_GAIN
 134                 for (i = 0; i < num_busses_in(chip); i++)
 135                         set_input_gain(chip, i, chip->input_gain[i]);
 136                 update_input_line_level(chip);
 137 #endif
 138
 139                 for (o = 0; o < num_busses_out(chip); o++)
 140                         set_output_gain(chip, o, chip->output_gain[o]);
 141                 update_output_line_level(chip);
 142                 spin_unlock_irq(&chip->lock);
 143         }
 144
 145         return err;
 146 }
 147
 148
 149
 150 /* Set the S/PDIF output format */
 151 static int set_professional_spdif(struct echoaudio *chip, char prof)
 152 {
 153         u32 control_reg;
 154         int err;
 155
 156         /* Clear the current S/PDIF flags */
 157         control_reg = le32_to_cpu(chip->comm_page->control_register);
 158         control_reg &= GML_SPDIF_FORMAT_CLEAR_MASK;
 159
 160         /* Set the new S/PDIF flags depending on the mode */
 161         control_reg |= GML_SPDIF_TWO_CHANNEL | GML_SPDIF_24_BIT |
 162                 GML_SPDIF_COPY_PERMIT;
 163         if (prof) {
 164                 /* Professional mode */
 165                 control_reg |= GML_SPDIF_PRO_MODE;
 166
 167                 switch (chip->sample_rate) {
 168                 case 32000:
 169                         control_reg |= GML_SPDIF_SAMPLE_RATE0 |
 170                                 GML_SPDIF_SAMPLE_RATE1;
 171                         break;
 172                 case 44100:
 173                         control_reg |= GML_SPDIF_SAMPLE_RATE0;
 174                         break;
 175                 case 48000:
 176                         control_reg |= GML_SPDIF_SAMPLE_RATE1;
 177                         break;
 178                 }
 179         } else {
 180                 /* Consumer mode */
 181                 switch (chip->sample_rate) {
 182                 case 32000:
 183                         control_reg |= GML_SPDIF_SAMPLE_RATE0 |
 184                                 GML_SPDIF_SAMPLE_RATE1;
 185                         break;
 186                 case 48000:
 187                         control_reg |= GML_SPDIF_SAMPLE_RATE1;
 188                         break;
 189                 }
 190         }
 191
 192         if ((err = write_control_reg(chip, control_reg, FALSE)))
 193                 return err;
 194         chip->professional_spdif = prof;
 195         DE_ACT(("set_professional_spdif to %s\n",
 196                 prof ? "Professional" : "Consumer"));
 197         return 0;
 198 }