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        DE_INIT(("init_hw() - Indigo IO\n"));
  42        if (snd_BUG_ON((subdevice_id & 0xfff0) != INDIGO_IO))
  43                return -ENODEV;
  44
  45        if ((err = init_dsp_comm_page(chip))) {
  46                DE_INIT(("init_hw - could not initialize DSP comm page\n"));
  47                return err;
  48        }
  49
  50        chip->device_id = device_id;
  51        chip->subdevice_id = subdevice_id;
  52        chip->bad_board = TRUE;
  53        chip->dsp_code_to_load = FW_INDIGO_IO_DSP;
  54        /* Since this card has no ASIC, mark it as loaded so everything
  55           works OK */
  56        chip->asic_loaded = TRUE;
  57        chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL;
  58
  59        if ((err = load_firmware(chip)) < 0)
  60                return err;
  61        chip->bad_board = FALSE;
  62
  63        DE_INIT(("init_hw done\n"));
  64        return err;
  65}
  66
  67
  68
  69static int set_mixer_defaults(struct echoaudio *chip)
  70{
  71        return init_line_levels(chip);
  72}
  73
  74
  75
  76static u32 detect_input_clocks(const struct echoaudio *chip)
  77{
  78        return ECHO_CLOCK_BIT_INTERNAL;
  79}
  80
  81
  82
  83/* The IndigoIO has no ASIC. Just do nothing */
  84static int load_asic(struct echoaudio *chip)
  85{
  86        return 0;
  87}
  88
  89
  90
  91static int set_sample_rate(struct echoaudio *chip, u32 rate)
  92{
  93        if (wait_handshake(chip))
  94                return -EIO;
  95
  96        chip->sample_rate = rate;
  97        chip->comm_page->sample_rate = cpu_to_le32(rate);
  98        clear_handshake(chip);
  99        return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
 100}
 101
 102
 103
 104/* This function routes the sound from a virtual channel to a real output */
 105static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
 106                           int gain)
 107{
 108        int index;
 109
 110        if (snd_BUG_ON(pipe >= num_pipes_out(chip) ||
 111                       output >= num_busses_out(chip)))
 112                return -EINVAL;
 113
 114        if (wait_handshake(chip))
 115                return -EIO;
 116
 117        chip->vmixer_gain[output][pipe] = gain;
 118        index = output * num_pipes_out(chip) + pipe;
 119        chip->comm_page->vmixer[index] = gain;
 120
 121        DE_ACT(("set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain));
 122        return 0;
 123}
 124
 125
 126
 127/* Tell the DSP to read and update virtual mixer levels in comm page. */
 128static int update_vmixer_level(struct echoaudio *chip)
 129{
 130        if (wait_handshake(chip))
 131                return -EIO;
 132        clear_handshake(chip);
 133        return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
 134}
 135
 136