sound/pci/echoaudio/mia_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_input_clock(struct echoaudio *chip, u16 clock);
  33 static int set_professional_spdif(struct echoaudio *chip, char prof);
  34 static int update_flags(struct echoaudio *chip);
  35 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
  36                            int gain);
  37 static int update_vmixer_level(struct echoaudio *chip);
  38
  39
  40 static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
  41 {
  42         int err;
  43
  44         DE_INIT(("init_hw() - Mia\n"));
  45         if (snd_BUG_ON((subdevice_id & 0xfff0) != MIA))
  46                 return -ENODEV;
  47
  48         if ((err = init_dsp_comm_page(chip))) {
  49                 DE_INIT(("init_hw - could not initialize DSP comm page\n"));
  50                 return err;
  51         }
  52
  53         chip->device_id = device_id;
  54         chip->subdevice_id = subdevice_id;
  55         chip->bad_board = TRUE;
  56         chip->dsp_code_to_load = &card_fw[FW_MIA_DSP];
  57         /* Since this card has no ASIC, mark it as loaded so everything
  58            works OK */
  59         chip->asic_loaded = TRUE;
  60         if ((subdevice_id & 0x0000f) == MIA_MIDI_REV)
  61                 chip->has_midi = TRUE;
  62         chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL |
  63                 ECHO_CLOCK_BIT_SPDIF;
  64
  65         if ((err = load_firmware(chip)) < 0)
  66                 return err;
  67         chip->bad_board = FALSE;
  68
  69         if ((err = init_line_levels(chip)))
  70                 return err;
  71
  72         /* Default routing of the virtual channels: vchannels 0-3 go to analog
  73         outputs and vchannels 4-7 go to S/PDIF outputs */
  74         set_vmixer_gain(chip, 0, 0, 0);
  75         set_vmixer_gain(chip, 1, 1, 0);
  76         set_vmixer_gain(chip, 0, 2, 0);
  77         set_vmixer_gain(chip, 1, 3, 0);
  78         set_vmixer_gain(chip, 2, 4, 0);
  79         set_vmixer_gain(chip, 3, 5, 0);
  80         set_vmixer_gain(chip, 2, 6, 0);
  81         set_vmixer_gain(chip, 3, 7, 0);
  82         err = update_vmixer_level(chip);
  83
  84         DE_INIT(("init_hw done\n"));
  85         return err;
  86 }
  87
  88
  89
  90 static u32 detect_input_clocks(const struct echoaudio *chip)
  91 {
  92         u32 clocks_from_dsp, clock_bits;
  93
  94         /* Map the DSP clock detect bits to the generic driver clock
  95            detect bits */
  96         clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
  97
  98         clock_bits = ECHO_CLOCK_BIT_INTERNAL;
  99
 100         if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF)
 101                 clock_bits |= ECHO_CLOCK_BIT_SPDIF;
 102
 103         return clock_bits;
 104 }
 105
 106
 107
 108 /* The Mia has no ASIC. Just do nothing */
 109 static int load_asic(struct echoaudio *chip)
 110 {
 111         return 0;
 112 }
 113
 114
 115
 116 static int set_sample_rate(struct echoaudio *chip, u32 rate)
 117 {
 118         u32 control_reg;
 119
 120         switch (rate) {
 121         case 96000:
 122                 control_reg = MIA_96000;
 123                 break;
 124         case 88200:
 125                 control_reg = MIA_88200;
 126                 break;
 127         case 48000:
 128                 control_reg = MIA_48000;
 129                 break;
 130         case 44100:
 131                 control_reg = MIA_44100;
 132                 break;
 133         case 32000:
 134                 control_reg = MIA_32000;
 135                 break;
 136         default:
 137                 DE_ACT(("set_sample_rate: %d invalid!\n", rate));
 138                 return -EINVAL;
 139         }
 140
 141         /* Override the clock setting if this Mia is set to S/PDIF clock */
 142         if (chip->input_clock == ECHO_CLOCK_SPDIF)
 143                 control_reg |= MIA_SPDIF;
 144
 145         /* Set the control register if it has changed */
 146         if (control_reg != le32_to_cpu(chip->comm_page->control_register)) {
 147                 if (wait_handshake(chip))
 148                         return -EIO;
 149
 150                 chip->comm_page->sample_rate = cpu_to_le32(rate);       /* ignored by the DSP */
 151                 chip->comm_page->control_register = cpu_to_le32(control_reg);
 152                 chip->sample_rate = rate;
 153
 154                 clear_handshake(chip);
 155                 return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
 156         }
 157         return 0;
 158 }
 159
 160
 161
 162 static int set_input_clock(struct echoaudio *chip, u16 clock)
 163 {
 164         DE_ACT(("set_input_clock(%d)\n", clock));
 165         if (snd_BUG_ON(clock != ECHO_CLOCK_INTERNAL &&
 166                        clock != ECHO_CLOCK_SPDIF))
 167                 return -EINVAL;
 168
 169         chip->input_clock = clock;
 170         return set_sample_rate(chip, chip->sample_rate);
 171 }
 172
 173
 174
 175 /* This function routes the sound from a virtual channel to a real output */
 176 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
 177                            int gain)
 178 {
 179         int index;
 180
 181         if (snd_BUG_ON(pipe >= num_pipes_out(chip) ||
 182                        output >= num_busses_out(chip)))
 183                 return -EINVAL;
 184
 185         if (wait_handshake(chip))
 186                 return -EIO;
 187
 188         chip->vmixer_gain[output][pipe] = gain;
 189         index = output * num_pipes_out(chip) + pipe;
 190         chip->comm_page->vmixer[index] = gain;
 191
 192         DE_ACT(("set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain));
 193         return 0;
 194 }
 195
 196
 197
 198 /* Tell the DSP to read and update virtual mixer levels in comm page. */
 199 static int update_vmixer_level(struct echoaudio *chip)
 200 {
 201         if (wait_handshake(chip))
 202                 return -EIO;
 203         clear_handshake(chip);
 204         return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
 205 }
 206
 207
 208
 209 /* Tell the DSP to reread the flags from the comm page */
 210 static int update_flags(struct echoaudio *chip)
 211 {
 212         if (wait_handshake(chip))
 213                 return -EIO;
 214         clear_handshake(chip);
 215         return send_vector(chip, DSP_VC_UPDATE_FLAGS);
 216 }
 217
 218
 219
 220 static int set_professional_spdif(struct echoaudio *chip, char prof)
 221 {
 222         DE_ACT(("set_professional_spdif %d\n", prof));
 223         if (prof)
 224                 chip->comm_page->flags |=
 225                         __constant_cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
 226         else
 227                 chip->comm_page->flags &=
 228                         ~__constant_cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
 229         chip->professional_spdif = prof;
 230         return update_flags(chip);
 231 }
 232