release/src-rt-6.x.4708/linux/linux-2.6.36/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         DE_INIT(("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                 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->has_midi = TRUE;
  56         chip->dsp_code_to_load = FW_LAYLA20_DSP;
  57         chip->input_clock_types =
  58                 ECHO_CLOCK_BIT_INTERNAL | ECHO_CLOCK_BIT_SPDIF |
  59                 ECHO_CLOCK_BIT_WORD | ECHO_CLOCK_BIT_SUPER;
  60         chip->output_clock_types =
  61                 ECHO_CLOCK_BIT_WORD | ECHO_CLOCK_BIT_SUPER;
  62
  63         if ((err = load_firmware(chip)) < 0)
  64                 return err;
  65         chip->bad_board = FALSE;
  66
  67         DE_INIT(("init_hw done\n"));
  68         return err;
  69 }
  70
  71
  72
  73 static int set_mixer_defaults(struct echoaudio *chip)
  74 {
  75         chip->professional_spdif = FALSE;
  76         return init_line_levels(chip);
  77 }
  78
  79
  80
  81 static u32 detect_input_clocks(const struct echoaudio *chip)
  82 {
  83         u32 clocks_from_dsp, clock_bits;
  84
  85         /* Map the DSP clock detect bits to the generic driver clock detect bits */
  86         clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
  87
  88         clock_bits = ECHO_CLOCK_BIT_INTERNAL;
  89
  90         if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF)
  91                 clock_bits |= ECHO_CLOCK_BIT_SPDIF;
  92
  93         if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_WORD) {
  94                 if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SUPER)
  95                         clock_bits |= ECHO_CLOCK_BIT_SUPER;
  96                 else
  97                         clock_bits |= ECHO_CLOCK_BIT_WORD;
  98         }
  99
 100         return clock_bits;
 101 }
 102
 103
 104
 105 /* ASIC status check - some cards have one or two ASICs that need to be
 106 loaded.  Once that load is complete, this function is called to see if
 107 the load was successful.
 108 If this load fails, it does not necessarily mean that the hardware is
 109 defective - the external box may be disconnected or turned off.
 110 This routine sometimes fails for Layla20; for Layla20, the loop runs
 111 5 times and succeeds if it wins on three of the loops. */
 112 static int check_asic_status(struct echoaudio *chip)
 113 {
 114         u32 asic_status;
 115         int goodcnt, i;
 116
 117         chip->asic_loaded = FALSE;
 118         for (i = goodcnt = 0; i < 5; i++) {
 119                 send_vector(chip, DSP_VC_TEST_ASIC);
 120
 121                 /* The DSP will return a value to indicate whether or not
 122                    the ASIC is currently loaded */
 123                 if (read_dsp(chip, &asic_status) < 0) {
 124                         DE_ACT(("check_asic_status: failed on read_dsp\n"));
 125                         return -EIO;
 126                 }
 127
 128                 if (asic_status == ASIC_ALREADY_LOADED) {
 129                         if (++goodcnt == 3) {
 130                                 chip->asic_loaded = TRUE;
 131                                 return 0;
 132                         }
 133                 }
 134         }
 135         return -EIO;
 136 }
 137
 138
 139
 140 /* Layla20 has an ASIC in the external box */
 141 static int load_asic(struct echoaudio *chip)
 142 {
 143         int err;
 144
 145         if (chip->asic_loaded)
 146                 return 0;
 147
 148         err = load_asic_generic(chip, DSP_FNC_LOAD_LAYLA_ASIC,
 149                                 FW_LAYLA20_ASIC);
 150         if (err < 0)
 151                 return err;
 152
 153         /* Check if ASIC is alive and well. */
 154         return check_asic_status(chip);
 155 }
 156
 157
 158
 159 static int set_sample_rate(struct echoaudio *chip, u32 rate)
 160 {
 161         if (snd_BUG_ON(rate < 8000 || rate > 50000))
 162                 return -EINVAL;
 163
 164         /* Only set the clock for internal mode. Do not return failure,
 165            simply treat it as a non-event. */
 166         if (chip->input_clock != ECHO_CLOCK_INTERNAL) {
 167                 DE_ACT(("set_sample_rate: Cannot set sample rate - "
 168                         "clock not set to CLK_CLOCKININTERNAL\n"));
 169                 chip->comm_page->sample_rate = cpu_to_le32(rate);
 170                 chip->sample_rate = rate;
 171                 return 0;
 172         }
 173
 174         if (wait_handshake(chip))
 175                 return -EIO;
 176
 177         DE_ACT(("set_sample_rate(%d)\n", rate));
 178         chip->sample_rate = rate;
 179         chip->comm_page->sample_rate = cpu_to_le32(rate);
 180         clear_handshake(chip);
 181         return send_vector(chip, DSP_VC_SET_LAYLA_SAMPLE_RATE);
 182 }
 183
 184
 185
 186 static int set_input_clock(struct echoaudio *chip, u16 clock_source)
 187 {
 188         u16 clock;
 189         u32 rate;
 190
 191         DE_ACT(("set_input_clock:\n"));
 192         rate = 0;
 193         switch (clock_source) {
 194         case ECHO_CLOCK_INTERNAL:
 195                 DE_ACT(("Set Layla20 clock to INTERNAL\n"));
 196                 rate = chip->sample_rate;
 197                 clock = LAYLA20_CLOCK_INTERNAL;
 198                 break;
 199         case ECHO_CLOCK_SPDIF:
 200                 DE_ACT(("Set Layla20 clock to SPDIF\n"));
 201                 clock = LAYLA20_CLOCK_SPDIF;
 202                 break;
 203         case ECHO_CLOCK_WORD:
 204                 DE_ACT(("Set Layla20 clock to WORD\n"));
 205                 clock = LAYLA20_CLOCK_WORD;
 206                 break;
 207         case ECHO_CLOCK_SUPER:
 208                 DE_ACT(("Set Layla20 clock to SUPER\n"));
 209                 clock = LAYLA20_CLOCK_SUPER;
 210                 break;
 211         default:
 212                 DE_ACT(("Input clock 0x%x not supported for Layla24\n",
 213                         clock_source));
 214                 return -EINVAL;
 215         }
 216         chip->input_clock = clock_source;
 217
 218         chip->comm_page->input_clock = cpu_to_le16(clock);
 219         clear_handshake(chip);
 220         send_vector(chip, DSP_VC_UPDATE_CLOCKS);
 221
 222         if (rate)
 223                 set_sample_rate(chip, rate);
 224
 225         return 0;
 226 }
 227
 228
 229
 230 static int set_output_clock(struct echoaudio *chip, u16 clock)
 231 {
 232         DE_ACT(("set_output_clock: %d\n", clock));
 233         switch (clock) {
 234         case ECHO_CLOCK_SUPER:
 235                 clock = LAYLA20_OUTPUT_CLOCK_SUPER;
 236                 break;
 237         case ECHO_CLOCK_WORD:
 238                 clock = LAYLA20_OUTPUT_CLOCK_WORD;
 239                 break;
 240         default:
 241                 DE_ACT(("set_output_clock wrong clock\n"));
 242                 return -EINVAL;
 243         }
 244
 245         if (wait_handshake(chip))
 246                 return -EIO;
 247
 248         chip->comm_page->output_clock = cpu_to_le16(clock);
 249         chip->output_clock = clock;
 250         clear_handshake(chip);
 251         return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
 252 }
 253
 254
 255
 256 /* Set input bus gain (one unit is 0.5dB !) */
 257 static int set_input_gain(struct echoaudio *chip, u16 input, int gain)
 258 {
 259         if (snd_BUG_ON(input >= num_busses_in(chip)))
 260                 return -EINVAL;
 261
 262         if (wait_handshake(chip))
 263                 return -EIO;
 264
 265         chip->input_gain[input] = gain;
 266         gain += GL20_INPUT_GAIN_MAGIC_NUMBER;
 267         chip->comm_page->line_in_level[input] = gain;
 268         return 0;
 269 }
 270
 271
 272
 273 /* Tell the DSP to reread the flags from the comm page */
 274 static int update_flags(struct echoaudio *chip)
 275 {
 276         if (wait_handshake(chip))
 277                 return -EIO;
 278         clear_handshake(chip);
 279         return send_vector(chip, DSP_VC_UPDATE_FLAGS);
 280 }
 281
 282
 283
 284 static int set_professional_spdif(struct echoaudio *chip, char prof)
 285 {
 286         DE_ACT(("set_professional_spdif %d\n", prof));
 287         if (prof)
 288                 chip->comm_page->flags |=
 289                         cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
 290         else
 291                 chip->comm_page->flags &=
 292                         ~cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
 293         chip->professional_spdif = prof;
 294         return update_flags(chip);
 295 }