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