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        DE_INIT(("init_hw() - Indigo\n"));
  42        if (snd_BUG_ON((subdevice_id & 0xfff0) != INDIGO))
  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 = &card_fw[FW_INDIGO_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        if ((err = init_line_levels(chip)) < 0)
  64                return err;
  65
  66        DE_INIT(("init_hw done\n"));
  67        return err;
  68}
  69
  70
  71
  72static u32 detect_input_clocks(const struct echoaudio *chip)
  73{
  74        return ECHO_CLOCK_BIT_INTERNAL;
  75}
  76
  77
  78
  79/* The Indigo has no ASIC. Just do nothing */
  80static int load_asic(struct echoaudio *chip)
  81{
  82        return 0;
  83}
  84
  85
  86
  87static int set_sample_rate(struct echoaudio *chip, u32 rate)
  88{
  89        u32 control_reg;
  90
  91        switch (rate) {
  92        case 96000:
  93                control_reg = MIA_96000;
  94                break;
  95        case 88200:
  96                control_reg = MIA_88200;
  97                break;
  98        case 48000:
  99                control_reg = MIA_48000;
 100                break;
 101        case 44100:
 102                control_reg = MIA_44100;
 103                break;
 104        case 32000:
 105                control_reg = MIA_32000;
 106                break;
 107        default:
 108                DE_ACT(("set_sample_rate: %d invalid!\n", rate));
 109                return -EINVAL;
 110        }
 111
 112        /* Set the control register if it has changed */
 113        if (control_reg != le32_to_cpu(chip->comm_page->control_register)) {
 114                if (wait_handshake(chip))
 115                        return -EIO;
 116
 117                chip->comm_page->sample_rate = cpu_to_le32(rate);       /* ignored by the DSP */
 118                chip->comm_page->control_register = cpu_to_le32(control_reg);
 119                chip->sample_rate = rate;
 120
 121                clear_handshake(chip);
 122                return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
 123        }
 124        return 0;
 125}
 126
 127
 128
 129/* This function routes the sound from a virtual channel to a real output */
 130static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
 131                           int gain)
 132{
 133        int index;
 134
 135        if (snd_BUG_ON(pipe >= num_pipes_out(chip) ||
 136                       output >= num_busses_out(chip)))
 137                return -EINVAL;
 138
 139        if (wait_handshake(chip))
 140                return -EIO;
 141
 142        chip->vmixer_gain[output][pipe] = gain;
 143        index = output * num_pipes_out(chip) + pipe;
 144        chip->comm_page->vmixer[index] = gain;
 145
 146        DE_ACT(("set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain));
 147        return 0;
 148}
 149
 150
 151
 152/* Tell the DSP to read and update virtual mixer levels in comm page. */
 153static int update_vmixer_level(struct echoaudio *chip)
 154{
 155        if (wait_handshake(chip))
 156                return -EIO;
 157        clear_handshake(chip);
 158        return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
 159}
 160
 161