LXR linux/sound/pci/echoaudio/darla24

   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
  32static 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        if ((err = init_dsp_comm_page(chip))) {
  40                dev_err(chip->card->dev,
  41                        "init_hw: could not initialize DSP comm page\n");
  42                return err;
  43        }
  44
  45        chip->device_id = device_id;
  46        chip->subdevice_id = subdevice_id;
  47        chip->bad_board = true;
  48        chip->dsp_code_to_load = FW_DARLA24_DSP;
  49        /* Since this card has no ASIC, mark it as loaded so everything
  50           works OK */
  51        chip->asic_loaded = true;
  52        chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL |
  53                ECHO_CLOCK_BIT_ESYNC;
  54
  55        if ((err = load_firmware(chip)) < 0)
  56                return err;
  57        chip->bad_board = false;
  58
  59        return err;
  60}
  61
  62
  63
  64static int set_mixer_defaults(struct echoaudio *chip)
  65{
  66        return init_line_levels(chip);
  67}
  68
  69
  70
  71static u32 detect_input_clocks(const struct echoaudio *chip)
  72{
  73        u32 clocks_from_dsp, clock_bits;
  74
  75        /* Map the DSP clock detect bits to the generic driver clock
  76           detect bits */
  77        clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
  78
  79        clock_bits = ECHO_CLOCK_BIT_INTERNAL;
  80
  81        if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_ESYNC)
  82                clock_bits |= ECHO_CLOCK_BIT_ESYNC;
  83
  84        return clock_bits;
  85}
  86
  87
  88
  89/* The Darla24 has no ASIC. Just do nothing */
  90static int load_asic(struct echoaudio *chip)
  91{
  92        return 0;
  93}
  94
  95
  96
  97static int set_sample_rate(struct echoaudio *chip, u32 rate)
  98{
  99        u8 clock;
 100
 101        switch (rate) {
 102        case 96000:
 103                clock = GD24_96000;
 104                break;
 105        case 88200:
 106                clock = GD24_88200;
 107                break;
 108        case 48000:
 109                clock = GD24_48000;
 110                break;
 111        case 44100:
 112                clock = GD24_44100;
 113                break;
 114        case 32000:
 115                clock = GD24_32000;
 116                break;
 117        case 22050:
 118                clock = GD24_22050;
 119                break;
 120        case 16000:
 121                clock = GD24_16000;
 122                break;
 123        case 11025:
 124                clock = GD24_11025;
 125                break;
 126        case 8000:
 127                clock = GD24_8000;
 128                break;
 129        default:
 130                dev_err(chip->card->dev,
 131                        "set_sample_rate: Error, invalid sample rate %d\n",
 132                        rate);
 133                return -EINVAL;
 134        }
 135
 136        if (wait_handshake(chip))
 137                return -EIO;
 138
 139        dev_dbg(chip->card->dev,
 140                "set_sample_rate: %d clock %d\n", rate, clock);
 141        chip->sample_rate = rate;
 142
 143        /* Override the sample rate if this card is set to Echo sync. */
 144        if (chip->input_clock == ECHO_CLOCK_ESYNC)
 145                clock = GD24_EXT_SYNC;
 146
 147        chip->comm_page->sample_rate = cpu_to_le32(rate);       /* ignored by the DSP ? */
 148        chip->comm_page->gd_clock_state = clock;
 149        clear_handshake(chip);
 150        return send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE);
 151}
 152
 153
 154
 155static int set_input_clock(struct echoaudio *chip, u16 clock)
 156{
 157        if (snd_BUG_ON(clock != ECHO_CLOCK_INTERNAL &&
 158                       clock != ECHO_CLOCK_ESYNC))
 159                return -EINVAL;
 160        chip->input_clock = clock;
 161        return set_sample_rate(chip, chip->sample_rate);
 162}
 163
 164