LXR linux/sound/pci/echoaudio/indigo

   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))
  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_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 Indigo 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        u32 control_reg;
  95
  96        switch (rate) {
  97        case 96000:
  98                control_reg = MIA_96000;
  99                break;
 100        case 88200:
 101                control_reg = MIA_88200;
 102                break;
 103        case 48000:
 104                control_reg = MIA_48000;
 105                break;
 106        case 44100:
 107                control_reg = MIA_44100;
 108                break;
 109        case 32000:
 110                control_reg = MIA_32000;
 111                break;
 112        default:
 113                dev_err(chip->card->dev,
 114                        "set_sample_rate: %d invalid!\n", rate);
 115                return -EINVAL;
 116        }
 117
 118        /* Set the control register if it has changed */
 119        if (control_reg != le32_to_cpu(chip->comm_page->control_register)) {
 120                if (wait_handshake(chip))
 121                        return -EIO;
 122
 123                chip->comm_page->sample_rate = cpu_to_le32(rate);       /* ignored by the DSP */
 124                chip->comm_page->control_register = cpu_to_le32(control_reg);
 125                chip->sample_rate = rate;
 126
 127                clear_handshake(chip);
 128                return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
 129        }
 130        return 0;
 131}
 132
 133
 134
 135/* This function routes the sound from a virtual channel to a real output */
 136static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
 137                           int gain)
 138{
 139        int index;
 140
 141        if (snd_BUG_ON(pipe >= num_pipes_out(chip) ||
 142                       output >= num_busses_out(chip)))
 143                return -EINVAL;
 144
 145        if (wait_handshake(chip))
 146                return -EIO;
 147
 148        chip->vmixer_gain[output][pipe] = gain;
 149        index = output * num_pipes_out(chip) + pipe;
 150        chip->comm_page->vmixer[index] = gain;
 151
 152        dev_dbg(chip->card->dev,
 153                "set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain);
 154        return 0;
 155}
 156
 157
 158
 159/* Tell the DSP to read and update virtual mixer levels in comm page. */
 160static int update_vmixer_level(struct echoaudio *chip)
 161{
 162        if (wait_handshake(chip))
 163                return -EIO;
 164        clear_handshake(chip);
 165        return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
 166}
 167
 168