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