sound/pci/echoaudio/layla20

/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
init_hw
set_mixer_defaults
detect_input_clocks
check_asic_status
load_asic
set_sample_rate
set_input_clock
set_output_clock
set_input_gain
update_flags
set_professional_spdif
   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         if (snd_BUG_ON((subdevice_id & 0xfff0) != LAYLA20))
  44                 return -ENODEV;
  45 
  46         if ((err = init_dsp_comm_page(chip))) {
  47                 dev_err(chip->card->dev,
  48                         "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         return err;
  68 }
  69 
  70 
  71 
  72 static int set_mixer_defaults(struct echoaudio *chip)
  73 {
  74         chip->professional_spdif = false;
  75         return init_line_levels(chip);
  76 }
  77 
  78 
  79 
  80 static u32 detect_input_clocks(const struct echoaudio *chip)
  81 {
  82         u32 clocks_from_dsp, clock_bits;
  83 
  84         /* Map the DSP clock detect bits to the generic driver clock detect bits */
  85         clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
  86 
  87         clock_bits = ECHO_CLOCK_BIT_INTERNAL;
  88 
  89         if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF)
  90                 clock_bits |= ECHO_CLOCK_BIT_SPDIF;
  91 
  92         if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_WORD) {
  93                 if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SUPER)
  94                         clock_bits |= ECHO_CLOCK_BIT_SUPER;
  95                 else
  96                         clock_bits |= ECHO_CLOCK_BIT_WORD;
  97         }
  98 
  99         return clock_bits;
 100 }
 101 
 102 
 103 
 104 /* ASIC status check - some cards have one or two ASICs that need to be
 105 loaded.  Once that load is complete, this function is called to see if
 106 the load was successful.
 107 If this load fails, it does not necessarily mean that the hardware is
 108 defective - the external box may be disconnected or turned off.
 109 This routine sometimes fails for Layla20; for Layla20, the loop runs
 110 5 times and succeeds if it wins on three of the loops. */
 111 static int check_asic_status(struct echoaudio *chip)
 112 {
 113         u32 asic_status;
 114         int goodcnt, i;
 115 
 116         chip->asic_loaded = false;
 117         for (i = goodcnt = 0; i < 5; i++) {
 118                 send_vector(chip, DSP_VC_TEST_ASIC);
 119 
 120                 /* The DSP will return a value to indicate whether or not
 121                    the ASIC is currently loaded */
 122                 if (read_dsp(chip, &asic_status) < 0) {
 123                         dev_err(chip->card->dev,
 124                                 "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                 dev_warn(chip->card->dev,
 168                          "Cannot set sample rate - 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         dev_dbg(chip->card->dev, "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         rate = 0;
 192         switch (clock_source) {
 193         case ECHO_CLOCK_INTERNAL:
 194                 rate = chip->sample_rate;
 195                 clock = LAYLA20_CLOCK_INTERNAL;
 196                 break;
 197         case ECHO_CLOCK_SPDIF:
 198                 clock = LAYLA20_CLOCK_SPDIF;
 199                 break;
 200         case ECHO_CLOCK_WORD:
 201                 clock = LAYLA20_CLOCK_WORD;
 202                 break;
 203         case ECHO_CLOCK_SUPER:
 204                 clock = LAYLA20_CLOCK_SUPER;
 205                 break;
 206         default:
 207                 dev_err(chip->card->dev,
 208                         "Input clock 0x%x not supported for Layla24\n",
 209                         clock_source);
 210                 return -EINVAL;
 211         }
 212         chip->input_clock = clock_source;
 213 
 214         chip->comm_page->input_clock = cpu_to_le16(clock);
 215         clear_handshake(chip);
 216         send_vector(chip, DSP_VC_UPDATE_CLOCKS);
 217 
 218         if (rate)
 219                 set_sample_rate(chip, rate);
 220 
 221         return 0;
 222 }
 223 
 224 
 225 
 226 static int set_output_clock(struct echoaudio *chip, u16 clock)
 227 {
 228         switch (clock) {
 229         case ECHO_CLOCK_SUPER:
 230                 clock = LAYLA20_OUTPUT_CLOCK_SUPER;
 231                 break;
 232         case ECHO_CLOCK_WORD:
 233                 clock = LAYLA20_OUTPUT_CLOCK_WORD;
 234                 break;
 235         default:
 236                 dev_err(chip->card->dev, "set_output_clock wrong clock\n");
 237                 return -EINVAL;
 238         }
 239 
 240         if (wait_handshake(chip))
 241                 return -EIO;
 242 
 243         chip->comm_page->output_clock = cpu_to_le16(clock);
 244         chip->output_clock = clock;
 245         clear_handshake(chip);
 246         return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
 247 }
 248 
 249 
 250 
 251 /* Set input bus gain (one unit is 0.5dB !) */
 252 static int set_input_gain(struct echoaudio *chip, u16 input, int gain)
 253 {
 254         if (snd_BUG_ON(input >= num_busses_in(chip)))
 255                 return -EINVAL;
 256 
 257         if (wait_handshake(chip))
 258                 return -EIO;
 259 
 260         chip->input_gain[input] = gain;
 261         gain += GL20_INPUT_GAIN_MAGIC_NUMBER;
 262         chip->comm_page->line_in_level[input] = gain;
 263         return 0;
 264 }
 265 
 266 
 267 
 268 /* Tell the DSP to reread the flags from the comm page */
 269 static int update_flags(struct echoaudio *chip)
 270 {
 271         if (wait_handshake(chip))
 272                 return -EIO;
 273         clear_handshake(chip);
 274         return send_vector(chip, DSP_VC_UPDATE_FLAGS);
 275 }
 276 
 277 
 278 
 279 static int set_professional_spdif(struct echoaudio *chip, char prof)
 280 {
 281         if (prof)
 282                 chip->comm_page->flags |=
 283                         cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
 284         else
 285                 chip->comm_page->flags &=
 286                         ~cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
 287         chip->professional_spdif = prof;
 288         return update_flags(chip);
 289 }
/* [<][>][^][v][top][bottom][index][help] */
root/sound/pci/echoaudio/layla20_dsp.c

DEFINITIONS
