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                 dev_err(chip->card->dev,
  50                         "check_asic_status: failed on read_dsp\n");
  51                 chip->asic_loaded = false;
  52                 return -EIO;
  53         }
  54
  55         chip->asic_loaded = (asic_status == ASIC_ALREADY_LOADED);
  56         return chip->asic_loaded ? 0 : -EIO;
  57 }
  58
  59
  60
  61 /* Most configuration of Gina24, Layla24, or Mona is accomplished by writing
  62 the control register.  write_control_reg sends the new control register
  63 value to the DSP. */
  64 static int write_control_reg(struct echoaudio *chip, u32 value, char force)
  65 {
  66         /* Handle the digital input auto-mute */
  67         if (chip->digital_in_automute)
  68                 value |= GML_DIGITAL_IN_AUTO_MUTE;
  69         else
  70                 value &= ~GML_DIGITAL_IN_AUTO_MUTE;
  71
  72         dev_dbg(chip->card->dev, "write_control_reg: 0x%x\n", value);
  73
  74         /* Write the control register */
  75         value = cpu_to_le32(value);
  76         if (value != chip->comm_page->control_register || force) {
  77                 if (wait_handshake(chip))
  78                         return -EIO;
  79                 chip->comm_page->control_register = value;
  80                 clear_handshake(chip);
  81                 return send_vector(chip, DSP_VC_WRITE_CONTROL_REG);
  82         }
  83         return 0;
  84 }
  85
  86
  87
  88 /* Gina24, Layla24, and Mona support digital input auto-mute.  If the digital
  89 input auto-mute is enabled, the DSP will only enable the digital inputs if
  90 the card is syncing to a valid clock on the ADAT or S/PDIF inputs.
  91 If the auto-mute is disabled, the digital inputs are enabled regardless of
  92 what the input clock is set or what is connected. */
  93 static int set_input_auto_mute(struct echoaudio *chip, int automute)
  94 {
  95         dev_dbg(chip->card->dev, "set_input_auto_mute %d\n", automute);
  96
  97         chip->digital_in_automute = automute;
  98
  99         /* Re-set the input clock to the current value - indirectly causes
 100         the auto-mute flag to be sent to the DSP */
 101         return set_input_clock(chip, chip->input_clock);
 102 }
 103
 104
 105
 106 /* S/PDIF coax / S/PDIF optical / ADAT - switch */
 107 static int set_digital_mode(struct echoaudio *chip, u8 mode)
 108 {
 109         u8 previous_mode;
 110         int err, i, o;
 111
 112         if (chip->bad_board)
 113                 return -EIO;
 114
 115         /* All audio channels must be closed before changing the digital mode */
 116         if (snd_BUG_ON(chip->pipe_alloc_mask))
 117                 return -EAGAIN;
 118
 119         if (snd_BUG_ON(!(chip->digital_modes & (1 << mode))))
 120                 return -EINVAL;
 121
 122         previous_mode = chip->digital_mode;
 123         err = dsp_set_digital_mode(chip, mode);
 124
 125         /* If we successfully changed the digital mode from or to ADAT,
 126            then make sure all output, input and monitor levels are
 127            updated by the DSP comm object. */
 128         if (err >= 0 && previous_mode != mode &&
 129             (previous_mode == DIGITAL_MODE_ADAT || mode == DIGITAL_MODE_ADAT)) {
 130                 spin_lock_irq(&chip->lock);
 131                 for (o = 0; o < num_busses_out(chip); o++)
 132                         for (i = 0; i < num_busses_in(chip); i++)
 133                                 set_monitor_gain(chip, o, i,
 134                                                  chip->monitor_gain[o][i]);
 135
 136 #ifdef ECHOCARD_HAS_INPUT_GAIN
 137                 for (i = 0; i < num_busses_in(chip); i++)
 138                         set_input_gain(chip, i, chip->input_gain[i]);
 139                 update_input_line_level(chip);
 140 #endif
 141
 142                 for (o = 0; o < num_busses_out(chip); o++)
 143                         set_output_gain(chip, o, chip->output_gain[o]);
 144                 update_output_line_level(chip);
 145                 spin_unlock_irq(&chip->lock);
 146         }
 147
 148         return err;
 149 }
 150
 151
 152
 153 /* Set the S/PDIF output format */
 154 static int set_professional_spdif(struct echoaudio *chip, char prof)
 155 {
 156         u32 control_reg;
 157         int err;
 158
 159         /* Clear the current S/PDIF flags */
 160         control_reg = le32_to_cpu(chip->comm_page->control_register);
 161         control_reg &= GML_SPDIF_FORMAT_CLEAR_MASK;
 162
 163         /* Set the new S/PDIF flags depending on the mode */
 164         control_reg |= GML_SPDIF_TWO_CHANNEL | GML_SPDIF_24_BIT |
 165                 GML_SPDIF_COPY_PERMIT;
 166         if (prof) {
 167                 /* Professional mode */
 168                 control_reg |= GML_SPDIF_PRO_MODE;
 169
 170                 switch (chip->sample_rate) {
 171                 case 32000:
 172                         control_reg |= GML_SPDIF_SAMPLE_RATE0 |
 173                                 GML_SPDIF_SAMPLE_RATE1;
 174                         break;
 175                 case 44100:
 176                         control_reg |= GML_SPDIF_SAMPLE_RATE0;
 177                         break;
 178                 case 48000:
 179                         control_reg |= GML_SPDIF_SAMPLE_RATE1;
 180                         break;
 181                 }
 182         } else {
 183                 /* Consumer mode */
 184                 switch (chip->sample_rate) {
 185                 case 32000:
 186                         control_reg |= GML_SPDIF_SAMPLE_RATE0 |
 187                                 GML_SPDIF_SAMPLE_RATE1;
 188                         break;
 189                 case 48000:
 190                         control_reg |= GML_SPDIF_SAMPLE_RATE1;
 191                         break;
 192                 }
 193         }
 194
 195         if ((err = write_control_reg(chip, control_reg, false)))
 196                 return err;
 197         chip->professional_spdif = prof;
 198         dev_dbg(chip->card->dev, "set_professional_spdif to %s\n",
 199                 prof ? "Professional" : "Consumer");
 200         return 0;
 201 }