sound/pci/echoaudio/layla20_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 read_dsp(struct echoaudio *chip, u32 *data);
  33 static int set_professional_spdif(struct echoaudio *chip, char prof);
  34 static int load_asic_generic(struct echoaudio *chip, u32 cmd, short asic);
  35 static int check_asic_status(struct echoaudio *chip);
  36 static int update_flags(struct echoaudio *chip);
  37
  38
  39 static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
  40 {
  41         int err;
  42
  43         dev_dbg(chip->card->dev, "init_hw() - Layla20\n");
  44         if (snd_BUG_ON((subdevice_id & 0xfff0) != LAYLA20))
  45                 return -ENODEV;
  46
  47         if ((err = init_dsp_comm_page(chip))) {
  48                 dev_err(chip->card->dev,
  49                         "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->has_midi = TRUE;
  57         chip->dsp_code_to_load = FW_LAYLA20_DSP;
  58         chip->input_clock_types =
  59                 ECHO_CLOCK_BIT_INTERNAL | ECHO_CLOCK_BIT_SPDIF |
  60                 ECHO_CLOCK_BIT_WORD | ECHO_CLOCK_BIT_SUPER;
  61         chip->output_clock_types =
  62                 ECHO_CLOCK_BIT_WORD | ECHO_CLOCK_BIT_SUPER;
  63
  64         if ((err = load_firmware(chip)) < 0)
  65                 return err;
  66         chip->bad_board = FALSE;
  67
  68         dev_dbg(chip->card->dev, "init_hw done\n");
  69         return err;
  70 }
  71
  72
  73
  74 static int set_mixer_defaults(struct echoaudio *chip)
  75 {
  76         chip->professional_spdif = FALSE;
  77         return init_line_levels(chip);
  78 }
  79
  80
  81
  82 static u32 detect_input_clocks(const struct echoaudio *chip)
  83 {
  84         u32 clocks_from_dsp, clock_bits;
  85
  86         /* Map the DSP clock detect bits to the generic driver clock detect bits */
  87         clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
  88
  89         clock_bits = ECHO_CLOCK_BIT_INTERNAL;
  90
  91         if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF)
  92                 clock_bits |= ECHO_CLOCK_BIT_SPDIF;
  93
  94         if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_WORD) {
  95                 if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SUPER)
  96                         clock_bits |= ECHO_CLOCK_BIT_SUPER;
  97                 else
  98                         clock_bits |= ECHO_CLOCK_BIT_WORD;
  99         }
 100
 101         return clock_bits;
 102 }
 103
 104
 105
 106 /* ASIC status check - some cards have one or two ASICs that need to be
 107 loaded.  Once that load is complete, this function is called to see if
 108 the load was successful.
 109 If this load fails, it does not necessarily mean that the hardware is
 110 defective - the external box may be disconnected or turned off.
 111 This routine sometimes fails for Layla20; for Layla20, the loop runs
 112 5 times and succeeds if it wins on three of the loops. */
 113 static int check_asic_status(struct echoaudio *chip)
 114 {
 115         u32 asic_status;
 116         int goodcnt, i;
 117
 118         chip->asic_loaded = FALSE;
 119         for (i = goodcnt = 0; i < 5; i++) {
 120                 send_vector(chip, DSP_VC_TEST_ASIC);
 121
 122                 /* The DSP will return a value to indicate whether or not
 123                    the ASIC is currently loaded */
 124                 if (read_dsp(chip, &asic_status) < 0) {
 125                         dev_err(chip->card->dev,
 126                                 "check_asic_status: failed on read_dsp\n");
 127                         return -EIO;
 128                 }
 129
 130                 if (asic_status == ASIC_ALREADY_LOADED) {
 131                         if (++goodcnt == 3) {
 132                                 chip->asic_loaded = TRUE;
 133                                 return 0;
 134                         }
 135                 }
 136         }
 137         return -EIO;
 138 }
 139
 140
 141
 142 /* Layla20 has an ASIC in the external box */
 143 static int load_asic(struct echoaudio *chip)
 144 {
 145         int err;
 146
 147         if (chip->asic_loaded)
 148                 return 0;
 149
 150         err = load_asic_generic(chip, DSP_FNC_LOAD_LAYLA_ASIC,
 151                                 FW_LAYLA20_ASIC);
 152         if (err < 0)
 153                 return err;
 154
 155         /* Check if ASIC is alive and well. */
 156         return check_asic_status(chip);
 157 }
 158
 159
 160
 161 static int set_sample_rate(struct echoaudio *chip, u32 rate)
 162 {
 163         if (snd_BUG_ON(rate < 8000 || rate > 50000))
 164                 return -EINVAL;
 165
 166         /* Only set the clock for internal mode. Do not return failure,
 167            simply treat it as a non-event. */
 168         if (chip->input_clock != ECHO_CLOCK_INTERNAL) {
 169                 dev_warn(chip->card->dev,
 170                          "Cannot set sample rate - clock not set to CLK_CLOCKININTERNAL\n");
 171                 chip->comm_page->sample_rate = cpu_to_le32(rate);
 172                 chip->sample_rate = rate;
 173                 return 0;
 174         }
 175
 176         if (wait_handshake(chip))
 177                 return -EIO;
 178
 179         dev_dbg(chip->card->dev, "set_sample_rate(%d)\n", rate);
 180         chip->sample_rate = rate;
 181         chip->comm_page->sample_rate = cpu_to_le32(rate);
 182         clear_handshake(chip);
 183         return send_vector(chip, DSP_VC_SET_LAYLA_SAMPLE_RATE);
 184 }
 185
 186
 187
 188 static int set_input_clock(struct echoaudio *chip, u16 clock_source)
 189 {
 190         u16 clock;
 191         u32 rate;
 192
 193         dev_dbg(chip->card->dev, "set_input_clock:\n");
 194         rate = 0;
 195         switch (clock_source) {
 196         case ECHO_CLOCK_INTERNAL:
 197                 dev_dbg(chip->card->dev, "Set Layla20 clock to INTERNAL\n");
 198                 rate = chip->sample_rate;
 199                 clock = LAYLA20_CLOCK_INTERNAL;
 200                 break;
 201         case ECHO_CLOCK_SPDIF:
 202                 dev_dbg(chip->card->dev, "Set Layla20 clock to SPDIF\n");
 203                 clock = LAYLA20_CLOCK_SPDIF;
 204                 break;
 205         case ECHO_CLOCK_WORD:
 206                 dev_dbg(chip->card->dev, "Set Layla20 clock to WORD\n");
 207                 clock = LAYLA20_CLOCK_WORD;
 208                 break;
 209         case ECHO_CLOCK_SUPER:
 210                 dev_dbg(chip->card->dev, "Set Layla20 clock to SUPER\n");
 211                 clock = LAYLA20_CLOCK_SUPER;
 212                 break;
 213         default:
 214                 dev_err(chip->card->dev,
 215                         "Input clock 0x%x not supported for Layla24\n",
 216                         clock_source);
 217                 return -EINVAL;
 218         }
 219         chip->input_clock = clock_source;
 220
 221         chip->comm_page->input_clock = cpu_to_le16(clock);
 222         clear_handshake(chip);
 223         send_vector(chip, DSP_VC_UPDATE_CLOCKS);
 224
 225         if (rate)
 226                 set_sample_rate(chip, rate);
 227
 228         return 0;
 229 }
 230
 231
 232
 233 static int set_output_clock(struct echoaudio *chip, u16 clock)
 234 {
 235         dev_dbg(chip->card->dev, "set_output_clock: %d\n", clock);
 236         switch (clock) {
 237         case ECHO_CLOCK_SUPER:
 238                 clock = LAYLA20_OUTPUT_CLOCK_SUPER;
 239                 break;
 240         case ECHO_CLOCK_WORD:
 241                 clock = LAYLA20_OUTPUT_CLOCK_WORD;
 242                 break;
 243         default:
 244                 dev_err(chip->card->dev, "set_output_clock wrong clock\n");
 245                 return -EINVAL;
 246         }
 247
 248         if (wait_handshake(chip))
 249                 return -EIO;
 250
 251         chip->comm_page->output_clock = cpu_to_le16(clock);
 252         chip->output_clock = clock;
 253         clear_handshake(chip);
 254         return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
 255 }
 256
 257
 258
 259 /* Set input bus gain (one unit is 0.5dB !) */
 260 static int set_input_gain(struct echoaudio *chip, u16 input, int gain)
 261 {
 262         if (snd_BUG_ON(input >= num_busses_in(chip)))
 263                 return -EINVAL;
 264
 265         if (wait_handshake(chip))
 266                 return -EIO;
 267
 268         chip->input_gain[input] = gain;
 269         gain += GL20_INPUT_GAIN_MAGIC_NUMBER;
 270         chip->comm_page->line_in_level[input] = gain;
 271         return 0;
 272 }
 273
 274
 275
 276 /* Tell the DSP to reread the flags from the comm page */
 277 static int update_flags(struct echoaudio *chip)
 278 {
 279         if (wait_handshake(chip))
 280                 return -EIO;
 281         clear_handshake(chip);
 282         return send_vector(chip, DSP_VC_UPDATE_FLAGS);
 283 }
 284
 285
 286
 287 static int set_professional_spdif(struct echoaudio *chip, char prof)
 288 {
 289         dev_dbg(chip->card->dev, "set_professional_spdif %d\n", prof);
 290         if (prof)
 291                 chip->comm_page->flags |=
 292                         cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
 293         else
 294                 chip->comm_page->flags &=
 295                         ~cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
 296         chip->professional_spdif = prof;
 297         return update_flags(chip);
 298 }