kernel/2.6.29.6-aldebaran-rt/sound/pci/echoaudio/gina20_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_professional_spdif(struct echoaudio *chip, char prof);
  33 static int update_flags(struct echoaudio *chip);
  34
  35
  36 static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
  37 {
  38         int err;
  39
  40         DE_INIT(("init_hw() - Gina20\n"));
  41         if (snd_BUG_ON((subdevice_id & 0xfff0) != GINA20))
  42                 return -ENODEV;
  43
  44         if ((err = init_dsp_comm_page(chip))) {
  45                 DE_INIT(("init_hw - could not initialize DSP comm page\n"));
  46                 return err;
  47         }
  48
  49         chip->device_id = device_id;
  50         chip->subdevice_id = subdevice_id;
  51         chip->bad_board = TRUE;
  52         chip->dsp_code_to_load = &card_fw[FW_GINA20_DSP];
  53         chip->spdif_status = GD_SPDIF_STATUS_UNDEF;
  54         chip->clock_state = GD_CLOCK_UNDEF;
  55         /* Since this card has no ASIC, mark it as loaded so everything
  56            works OK */
  57         chip->asic_loaded = TRUE;
  58         chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL |
  59                 ECHO_CLOCK_BIT_SPDIF;
  60
  61         if ((err = load_firmware(chip)) < 0)
  62                 return err;
  63         chip->bad_board = FALSE;
  64
  65         if ((err = init_line_levels(chip)) < 0)
  66                 return err;
  67
  68         err = set_professional_spdif(chip, TRUE);
  69
  70         DE_INIT(("init_hw done\n"));
  71         return err;
  72 }
  73
  74
  75
  76 static u32 detect_input_clocks(const struct echoaudio *chip)
  77 {
  78         u32 clocks_from_dsp, clock_bits;
  79
  80         /* Map the DSP clock detect bits to the generic driver clock
  81            detect bits */
  82         clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
  83
  84         clock_bits = ECHO_CLOCK_BIT_INTERNAL;
  85
  86         if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF)
  87                 clock_bits |= ECHO_CLOCK_BIT_SPDIF;
  88
  89         return clock_bits;
  90 }
  91
  92
  93
  94 /* The Gina20 has no ASIC. Just do nothing */
  95 static int load_asic(struct echoaudio *chip)
  96 {
  97         return 0;
  98 }
  99
 100
 101
 102 static int set_sample_rate(struct echoaudio *chip, u32 rate)
 103 {
 104         u8 clock_state, spdif_status;
 105
 106         if (wait_handshake(chip))
 107                 return -EIO;
 108
 109         switch (rate) {
 110         case 44100:
 111                 clock_state = GD_CLOCK_44;
 112                 spdif_status = GD_SPDIF_STATUS_44;
 113                 break;
 114         case 48000:
 115                 clock_state = GD_CLOCK_48;
 116                 spdif_status = GD_SPDIF_STATUS_48;
 117                 break;
 118         default:
 119                 clock_state = GD_CLOCK_NOCHANGE;
 120                 spdif_status = GD_SPDIF_STATUS_NOCHANGE;
 121                 break;
 122         }
 123
 124         if (chip->clock_state == clock_state)
 125                 clock_state = GD_CLOCK_NOCHANGE;
 126         if (spdif_status == chip->spdif_status)
 127                 spdif_status = GD_SPDIF_STATUS_NOCHANGE;
 128
 129         chip->comm_page->sample_rate = cpu_to_le32(rate);
 130         chip->comm_page->gd_clock_state = clock_state;
 131         chip->comm_page->gd_spdif_status = spdif_status;
 132         chip->comm_page->gd_resampler_state = 3;        /* magic number - should always be 3 */
 133
 134         /* Save the new audio state if it changed */
 135         if (clock_state != GD_CLOCK_NOCHANGE)
 136                 chip->clock_state = clock_state;
 137         if (spdif_status != GD_SPDIF_STATUS_NOCHANGE)
 138                 chip->spdif_status = spdif_status;
 139         chip->sample_rate = rate;
 140
 141         clear_handshake(chip);
 142         return send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE);
 143 }
 144
 145
 146
 147 static int set_input_clock(struct echoaudio *chip, u16 clock)
 148 {
 149         DE_ACT(("set_input_clock:\n"));
 150
 151         switch (clock) {
 152         case ECHO_CLOCK_INTERNAL:
 153                 /* Reset the audio state to unknown (just in case) */
 154                 chip->clock_state = GD_CLOCK_UNDEF;
 155                 chip->spdif_status = GD_SPDIF_STATUS_UNDEF;
 156                 set_sample_rate(chip, chip->sample_rate);
 157                 chip->input_clock = clock;
 158                 DE_ACT(("Set Gina clock to INTERNAL\n"));
 159                 break;
 160         case ECHO_CLOCK_SPDIF:
 161                 chip->comm_page->gd_clock_state = GD_CLOCK_SPDIFIN;
 162                 chip->comm_page->gd_spdif_status = GD_SPDIF_STATUS_NOCHANGE;
 163                 clear_handshake(chip);
 164                 send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE);
 165                 chip->clock_state = GD_CLOCK_SPDIFIN;
 166                 DE_ACT(("Set Gina20 clock to SPDIF\n"));
 167                 chip->input_clock = clock;
 168                 break;
 169         default:
 170                 return -EINVAL;
 171         }
 172
 173         return 0;
 174 }
 175
 176
 177
 178 /* Set input bus gain (one unit is 0.5dB !) */
 179 static int set_input_gain(struct echoaudio *chip, u16 input, int gain)
 180 {
 181         if (snd_BUG_ON(input >= num_busses_in(chip)))
 182                 return -EINVAL;
 183
 184         if (wait_handshake(chip))
 185                 return -EIO;
 186
 187         chip->input_gain[input] = gain;
 188         gain += GL20_INPUT_GAIN_MAGIC_NUMBER;
 189         chip->comm_page->line_in_level[input] = gain;
 190         return 0;
 191 }
 192
 193
 194
 195 /* Tell the DSP to reread the flags from the comm page */
 196 static int update_flags(struct echoaudio *chip)
 197 {
 198         if (wait_handshake(chip))
 199                 return -EIO;
 200         clear_handshake(chip);
 201         return send_vector(chip, DSP_VC_UPDATE_FLAGS);
 202 }
 203
 204
 205
 206 static int set_professional_spdif(struct echoaudio *chip, char prof)
 207 {
 208         DE_ACT(("set_professional_spdif %d\n", prof));
 209         if (prof)
 210                 chip->comm_page->flags |=
 211                         __constant_cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
 212         else
 213                 chip->comm_page->flags &=
 214                         ~__constant_cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
 215         chip->professional_spdif = prof;
 216         return update_flags(chip);
 217 }