sound/pci/echoaudio/layla24_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 Foundation.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  21    MA  02111-1307, USA.
  22
  23    *************************************************************************
  24
  25  Translation from C++ and adaptation for use in ALSA-Driver
  26  were made by Giuliano Pochini <pochini@shiny.it>
  27
  28 ****************************************************************************/
  29
  30
  31 static int write_control_reg(struct echoaudio *chip, u32 value, char force);
  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 set_digital_mode(struct echoaudio *chip, u8 mode);
  35 static int load_asic_generic(struct echoaudio *chip, u32 cmd, short asic);
  36 static int check_asic_status(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         if (snd_BUG_ON((subdevice_id & 0xfff0) != LAYLA24))
  44                 return -ENODEV;
  45
  46         err = init_dsp_comm_page(chip);
  47         if (err) {
  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_LAYLA24_DSP;
  58         chip->input_clock_types =
  59                 ECHO_CLOCK_BIT_INTERNAL | ECHO_CLOCK_BIT_SPDIF |
  60                 ECHO_CLOCK_BIT_WORD | ECHO_CLOCK_BIT_ADAT;
  61         chip->digital_modes =
  62                 ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_RCA |
  63                 ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_OPTICAL |
  64                 ECHOCAPS_HAS_DIGITAL_MODE_ADAT;
  65
  66         err = load_firmware(chip);
  67         if (err < 0)
  68                 return err;
  69         chip->bad_board = false;
  70
  71         err = init_line_levels(chip);
  72         if (err < 0)
  73                 return err;
  74
  75         return err;
  76 }
  77
  78
  79
  80 static int set_mixer_defaults(struct echoaudio *chip)
  81 {
  82         chip->digital_mode = DIGITAL_MODE_SPDIF_RCA;
  83         chip->professional_spdif = false;
  84         chip->digital_in_automute = true;
  85         return init_line_levels(chip);
  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 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 & GML_CLOCK_DETECT_BIT_SPDIF)
 100                 clock_bits |= ECHO_CLOCK_BIT_SPDIF;
 101
 102         if (clocks_from_dsp & GML_CLOCK_DETECT_BIT_ADAT)
 103                 clock_bits |= ECHO_CLOCK_BIT_ADAT;
 104
 105         if (clocks_from_dsp & GML_CLOCK_DETECT_BIT_WORD)
 106                 clock_bits |= ECHO_CLOCK_BIT_WORD;
 107
 108         return clock_bits;
 109 }
 110
 111
 112
 113 /* Layla24 has an ASIC on the PCI card and another ASIC in the external box;
 114 both need to be loaded. */
 115 static int load_asic(struct echoaudio *chip)
 116 {
 117         int err;
 118
 119         if (chip->asic_loaded)
 120                 return 1;
 121
 122
 123         /* Give the DSP a few milliseconds to settle down */
 124         mdelay(10);
 125
 126         /* Load the ASIC for the PCI card */
 127         err = load_asic_generic(chip, DSP_FNC_LOAD_LAYLA24_PCI_CARD_ASIC,
 128                                 FW_LAYLA24_1_ASIC);
 129         if (err < 0)
 130                 return err;
 131
 132         chip->asic_code = FW_LAYLA24_2S_ASIC;
 133
 134         /* Now give the new ASIC a little time to set up */
 135         mdelay(10);
 136
 137         /* Do the external one */
 138         err = load_asic_generic(chip, DSP_FNC_LOAD_LAYLA24_EXTERNAL_ASIC,
 139                                 FW_LAYLA24_2S_ASIC);
 140         if (err < 0)
 141                 return err;
 142
 143         /* Now give the external ASIC a little time to set up */
 144         mdelay(10);
 145
 146         /* See if it worked */
 147         err = check_asic_status(chip);
 148
 149         /* Set up the control register if the load succeeded -
 150            48 kHz, internal clock, S/PDIF RCA mode */
 151         if (!err)
 152                 err = write_control_reg(chip, GML_CONVERTER_ENABLE | GML_48KHZ,
 153                                         true);
 154
 155         return err;
 156 }
 157
 158
 159
 160 static int set_sample_rate(struct echoaudio *chip, u32 rate)
 161 {
 162         u32 control_reg, clock, base_rate;
 163
 164         if (snd_BUG_ON(rate >= 50000 &&
 165                        chip->digital_mode == DIGITAL_MODE_ADAT))
 166                 return -EINVAL;
 167
 168         /* Only set the clock for internal mode. */
 169         if (chip->input_clock != ECHO_CLOCK_INTERNAL) {
 170                 dev_warn(chip->card->dev,
 171                          "Cannot set sample rate - clock not set to CLK_CLOCKININTERNAL\n");
 172                 /* Save the rate anyhow */
 173                 chip->comm_page->sample_rate = cpu_to_le32(rate);
 174                 chip->sample_rate = rate;
 175                 return 0;
 176         }
 177
 178         /* Get the control register & clear the appropriate bits */
 179         control_reg = le32_to_cpu(chip->comm_page->control_register);
 180         control_reg &= GML_CLOCK_CLEAR_MASK & GML_SPDIF_RATE_CLEAR_MASK;
 181
 182         clock = 0;
 183
 184         switch (rate) {
 185         case 96000:
 186                 clock = GML_96KHZ;
 187                 break;
 188         case 88200:
 189                 clock = GML_88KHZ;
 190                 break;
 191         case 48000:
 192                 clock = GML_48KHZ | GML_SPDIF_SAMPLE_RATE1;
 193                 break;
 194         case 44100:
 195                 clock = GML_44KHZ;
 196                 /* Professional mode */
 197                 if (control_reg & GML_SPDIF_PRO_MODE)
 198                         clock |= GML_SPDIF_SAMPLE_RATE0;
 199                 break;
 200         case 32000:
 201                 clock = GML_32KHZ | GML_SPDIF_SAMPLE_RATE0 |
 202                         GML_SPDIF_SAMPLE_RATE1;
 203                 break;
 204         case 22050:
 205                 clock = GML_22KHZ;
 206                 break;
 207         case 16000:
 208                 clock = GML_16KHZ;
 209                 break;
 210         case 11025:
 211                 clock = GML_11KHZ;
 212                 break;
 213         case 8000:
 214                 clock = GML_8KHZ;
 215                 break;
 216         default:
 217                 /* If this is a non-standard rate, then the driver needs to
 218                 use Layla24's special "continuous frequency" mode */
 219                 clock = LAYLA24_CONTINUOUS_CLOCK;
 220                 if (rate > 50000) {
 221                         base_rate = rate >> 1;
 222                         control_reg |= GML_DOUBLE_SPEED_MODE;
 223                 } else {
 224                         base_rate = rate;
 225                 }
 226
 227                 if (base_rate < 25000)
 228                         base_rate = 25000;
 229
 230                 if (wait_handshake(chip))
 231                         return -EIO;
 232
 233                 chip->comm_page->sample_rate =
 234                         cpu_to_le32(LAYLA24_MAGIC_NUMBER / base_rate - 2);
 235
 236                 clear_handshake(chip);
 237                 send_vector(chip, DSP_VC_SET_LAYLA24_FREQUENCY_REG);
 238         }
 239
 240         control_reg |= clock;
 241
 242         chip->comm_page->sample_rate = cpu_to_le32(rate);       /* ignored by the DSP ? */
 243         chip->sample_rate = rate;
 244         dev_dbg(chip->card->dev,
 245                 "set_sample_rate: %d clock %d\n", rate, control_reg);
 246
 247         return write_control_reg(chip, control_reg, false);
 248 }
 249
 250
 251
 252 static int set_input_clock(struct echoaudio *chip, u16 clock)
 253 {
 254         u32 control_reg, clocks_from_dsp;
 255
 256         /* Mask off the clock select bits */
 257         control_reg = le32_to_cpu(chip->comm_page->control_register) &
 258                 GML_CLOCK_CLEAR_MASK;
 259         clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
 260
 261         /* Pick the new clock */
 262         switch (clock) {
 263         case ECHO_CLOCK_INTERNAL:
 264                 chip->input_clock = ECHO_CLOCK_INTERNAL;
 265                 return set_sample_rate(chip, chip->sample_rate);
 266         case ECHO_CLOCK_SPDIF:
 267                 if (chip->digital_mode == DIGITAL_MODE_ADAT)
 268                         return -EAGAIN;
 269                 control_reg |= GML_SPDIF_CLOCK;
 270                 /* Layla24 doesn't support 96KHz S/PDIF */
 271                 control_reg &= ~GML_DOUBLE_SPEED_MODE;
 272                 break;
 273         case ECHO_CLOCK_WORD:
 274                 control_reg |= GML_WORD_CLOCK;
 275                 if (clocks_from_dsp & GML_CLOCK_DETECT_BIT_WORD96)
 276                         control_reg |= GML_DOUBLE_SPEED_MODE;
 277                 else
 278                         control_reg &= ~GML_DOUBLE_SPEED_MODE;
 279                 break;
 280         case ECHO_CLOCK_ADAT:
 281                 if (chip->digital_mode != DIGITAL_MODE_ADAT)
 282                         return -EAGAIN;
 283                 control_reg |= GML_ADAT_CLOCK;
 284                 control_reg &= ~GML_DOUBLE_SPEED_MODE;
 285                 break;
 286         default:
 287                 dev_err(chip->card->dev,
 288                         "Input clock 0x%x not supported for Layla24\n", clock);
 289                 return -EINVAL;
 290         }
 291
 292         chip->input_clock = clock;
 293         return write_control_reg(chip, control_reg, true);
 294 }
 295
 296
 297
 298 /* Depending on what digital mode you want, Layla24 needs different ASICs
 299 loaded.  This function checks the ASIC needed for the new mode and sees
 300 if it matches the one already loaded. */
 301 static int switch_asic(struct echoaudio *chip, short asic)
 302 {
 303         s8 *monitors;
 304
 305         /*  Check to see if this is already loaded */
 306         if (asic != chip->asic_code) {
 307                 monitors = kmemdup(chip->comm_page->monitors,
 308                                         MONITOR_ARRAY_SIZE, GFP_KERNEL);
 309                 if (! monitors)
 310                         return -ENOMEM;
 311
 312                 memset(chip->comm_page->monitors, ECHOGAIN_MUTED,
 313                        MONITOR_ARRAY_SIZE);
 314
 315                 /* Load the desired ASIC */
 316                 if (load_asic_generic(chip, DSP_FNC_LOAD_LAYLA24_EXTERNAL_ASIC,
 317                                       asic) < 0) {
 318                         memcpy(chip->comm_page->monitors, monitors,
 319                                MONITOR_ARRAY_SIZE);
 320                         kfree(monitors);
 321                         return -EIO;
 322                 }
 323                 chip->asic_code = asic;
 324                 memcpy(chip->comm_page->monitors, monitors, MONITOR_ARRAY_SIZE);
 325                 kfree(monitors);
 326         }
 327
 328         return 0;
 329 }
 330
 331
 332
 333 static int dsp_set_digital_mode(struct echoaudio *chip, u8 mode)
 334 {
 335         u32 control_reg;
 336         int err, incompatible_clock;
 337         short asic;
 338
 339         /* Set clock to "internal" if it's not compatible with the new mode */
 340         incompatible_clock = false;
 341         switch (mode) {
 342         case DIGITAL_MODE_SPDIF_OPTICAL:
 343         case DIGITAL_MODE_SPDIF_RCA:
 344                 if (chip->input_clock == ECHO_CLOCK_ADAT)
 345                         incompatible_clock = true;
 346                 asic = FW_LAYLA24_2S_ASIC;
 347                 break;
 348         case DIGITAL_MODE_ADAT:
 349                 if (chip->input_clock == ECHO_CLOCK_SPDIF)
 350                         incompatible_clock = true;
 351                 asic = FW_LAYLA24_2A_ASIC;
 352                 break;
 353         default:
 354                 dev_err(chip->card->dev,
 355                         "Digital mode not supported: %d\n", mode);
 356                 return -EINVAL;
 357         }
 358
 359         if (incompatible_clock) {       /* Switch to 48KHz, internal */
 360                 chip->sample_rate = 48000;
 361                 spin_lock_irq(&chip->lock);
 362                 set_input_clock(chip, ECHO_CLOCK_INTERNAL);
 363                 spin_unlock_irq(&chip->lock);
 364         }
 365
 366         /* switch_asic() can sleep */
 367         if (switch_asic(chip, asic) < 0)
 368                 return -EIO;
 369
 370         spin_lock_irq(&chip->lock);
 371
 372         /* Tweak the control register */
 373         control_reg = le32_to_cpu(chip->comm_page->control_register);
 374         control_reg &= GML_DIGITAL_MODE_CLEAR_MASK;
 375
 376         switch (mode) {
 377         case DIGITAL_MODE_SPDIF_OPTICAL:
 378                 control_reg |= GML_SPDIF_OPTICAL_MODE;
 379                 break;
 380         case DIGITAL_MODE_SPDIF_RCA:
 381                 /* GML_SPDIF_OPTICAL_MODE bit cleared */
 382                 break;
 383         case DIGITAL_MODE_ADAT:
 384                 control_reg |= GML_ADAT_MODE;
 385                 control_reg &= ~GML_DOUBLE_SPEED_MODE;
 386                 break;
 387         }
 388
 389         err = write_control_reg(chip, control_reg, true);
 390         spin_unlock_irq(&chip->lock);
 391         if (err < 0)
 392                 return err;
 393         chip->digital_mode = mode;
 394
 395         dev_dbg(chip->card->dev, "set_digital_mode to %d\n", mode);
 396         return incompatible_clock;
 397 }