LXR linux/sound/pci/echoaudio/indigoio

   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 set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
  33                           int gain);
  34static int update_vmixer_level(struct echoaudio *chip);
  35
  36
  37static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
  38{
  39        int err;
  40
  41        if (snd_BUG_ON((subdevice_id & 0xfff0) != INDIGO_IO))
  42                return -ENODEV;
  43
  44        err = init_dsp_comm_page(chip);
  45        if (err) {
  46                dev_err(chip->card->dev,
  47                        "init_hw - could not initialize DSP comm page\n");
  48                return err;
  49        }
  50
  51        chip->device_id = device_id;
  52        chip->subdevice_id = subdevice_id;
  53        chip->bad_board = true;
  54        chip->dsp_code_to_load = FW_INDIGO_IO_DSP;
  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
  60        err = load_firmware(chip);
  61        if (err < 0)
  62                return err;
  63        chip->bad_board = false;
  64
  65        return err;
  66}
  67
  68
  69
  70static int set_mixer_defaults(struct echoaudio *chip)
  71{
  72        return init_line_levels(chip);
  73}
  74
  75
  76
  77static u32 detect_input_clocks(const struct echoaudio *chip)
  78{
  79        return ECHO_CLOCK_BIT_INTERNAL;
  80}
  81
  82
  83
  84/* The IndigoIO has no ASIC. Just do nothing */
  85static int load_asic(struct echoaudio *chip)
  86{
  87        return 0;
  88}
  89
  90
  91
  92static int set_sample_rate(struct echoaudio *chip, u32 rate)
  93{
  94        if (wait_handshake(chip))
  95                return -EIO;
  96
  97        chip->sample_rate = rate;
  98        chip->comm_page->sample_rate = cpu_to_le32(rate);
  99        clear_handshake(chip);
 100        return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
 101}
 102
 103
 104
 105/* This function routes the sound from a virtual channel to a real output */
 106static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
 107                           int gain)
 108{
 109        int index;
 110
 111        if (snd_BUG_ON(pipe >= num_pipes_out(chip) ||
 112                       output >= num_busses_out(chip)))
 113                return -EINVAL;
 114
 115        if (wait_handshake(chip))
 116                return -EIO;
 117
 118        chip->vmixer_gain[output][pipe] = gain;
 119        index = output * num_pipes_out(chip) + pipe;
 120        chip->comm_page->vmixer[index] = gain;
 121
 122        dev_dbg(chip->card->dev,
 123                "set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain);
 124        return 0;
 125}
 126
 127
 128
 129/* Tell the DSP to read and update virtual mixer levels in comm page. */
 130static int update_vmixer_level(struct echoaudio *chip)
 131{
 132        if (wait_handshake(chip))
 133                return -EIO;
 134        clear_handshake(chip);
 135        return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
 136}
 137
 138