sound/pci/echoaudio/darla24_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 init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
  33 {
  34         int err;
  35
  36         if (snd_BUG_ON((subdevice_id & 0xfff0) != DARLA24))
  37                 return -ENODEV;
  38
  39         err = init_dsp_comm_page(chip);
  40         if (err) {
  41                 dev_err(chip->card->dev,
  42                         "init_hw: could not initialize DSP comm page\n");
  43                 return err;
  44         }
  45
  46         chip->device_id = device_id;
  47         chip->subdevice_id = subdevice_id;
  48         chip->bad_board = true;
  49         chip->dsp_code_to_load = FW_DARLA24_DSP;
  50         /* Since this card has no ASIC, mark it as loaded so everything
  51            works OK */
  52         chip->asic_loaded = true;
  53         chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL |
  54                 ECHO_CLOCK_BIT_ESYNC;
  55
  56         err = load_firmware(chip);
  57         if (err < 0)
  58                 return err;
  59         chip->bad_board = false;
  60
  61         return err;
  62 }
  63
  64
  65
  66 static int set_mixer_defaults(struct echoaudio *chip)
  67 {
  68         return init_line_levels(chip);
  69 }
  70
  71
  72
  73 static u32 detect_input_clocks(const struct echoaudio *chip)
  74 {
  75         u32 clocks_from_dsp, clock_bits;
  76
  77         /* Map the DSP clock detect bits to the generic driver clock
  78            detect bits */
  79         clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
  80
  81         clock_bits = ECHO_CLOCK_BIT_INTERNAL;
  82
  83         if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_ESYNC)
  84                 clock_bits |= ECHO_CLOCK_BIT_ESYNC;
  85
  86         return clock_bits;
  87 }
  88
  89
  90
  91 /* The Darla24 has no ASIC. Just do nothing */
  92 static int load_asic(struct echoaudio *chip)
  93 {
  94         return 0;
  95 }
  96
  97
  98
  99 static int set_sample_rate(struct echoaudio *chip, u32 rate)
 100 {
 101         u8 clock;
 102
 103         switch (rate) {
 104         case 96000:
 105                 clock = GD24_96000;
 106                 break;
 107         case 88200:
 108                 clock = GD24_88200;
 109                 break;
 110         case 48000:
 111                 clock = GD24_48000;
 112                 break;
 113         case 44100:
 114                 clock = GD24_44100;
 115                 break;
 116         case 32000:
 117                 clock = GD24_32000;
 118                 break;
 119         case 22050:
 120                 clock = GD24_22050;
 121                 break;
 122         case 16000:
 123                 clock = GD24_16000;
 124                 break;
 125         case 11025:
 126                 clock = GD24_11025;
 127                 break;
 128         case 8000:
 129                 clock = GD24_8000;
 130                 break;
 131         default:
 132                 dev_err(chip->card->dev,
 133                         "set_sample_rate: Error, invalid sample rate %d\n",
 134                         rate);
 135                 return -EINVAL;
 136         }
 137
 138         if (wait_handshake(chip))
 139                 return -EIO;
 140
 141         dev_dbg(chip->card->dev,
 142                 "set_sample_rate: %d clock %d\n", rate, clock);
 143         chip->sample_rate = rate;
 144
 145         /* Override the sample rate if this card is set to Echo sync. */
 146         if (chip->input_clock == ECHO_CLOCK_ESYNC)
 147                 clock = GD24_EXT_SYNC;
 148
 149         chip->comm_page->sample_rate = cpu_to_le32(rate);       /* ignored by the DSP ? */
 150         chip->comm_page->gd_clock_state = clock;
 151         clear_handshake(chip);
 152         return send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE);
 153 }
 154
 155
 156
 157 static int set_input_clock(struct echoaudio *chip, u16 clock)
 158 {
 159         if (snd_BUG_ON(clock != ECHO_CLOCK_INTERNAL &&
 160                        clock != ECHO_CLOCK_ESYNC))
 161                 return -EINVAL;
 162         chip->input_clock = clock;
 163         return set_sample_rate(chip, chip->sample_rate);
 164 }
 165