release/src-rt-6.x/linux/linux-2.6/sound/pci/echoaudio/indigoio_dsp.c

   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
  32 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
  33                            int gain);
  34 static int update_vmixer_level(struct echoaudio *chip);
  35
  36
  37 static 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         snd_assert((subdevice_id & 0xfff0) == INDIGO_IO, return -ENODEV);
  43
  44         if ((err = init_dsp_comm_page(chip))) {
  45                 DE_INIT(("init_hw - could not initialize DSP comm page\n"));
  46                 return err;
  47         }
  48
  49         chip->device_id = device_id;
  50         chip->subdevice_id = subdevice_id;
  51         chip->bad_board = TRUE;
  52         chip->dsp_code_to_load = &card_fw[FW_INDIGO_IO_DSP];
  53         /* Since this card has no ASIC, mark it as loaded so everything
  54            works OK */
  55         chip->asic_loaded = TRUE;
  56         chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL;
  57
  58         if ((err = load_firmware(chip)) < 0)
  59                 return err;
  60         chip->bad_board = FALSE;
  61
  62         if ((err = init_line_levels(chip)) < 0)
  63                 return err;
  64
  65         /* Default routing of the virtual channels: all vchannels are routed
  66         to the stereo output */
  67         set_vmixer_gain(chip, 0, 0, 0);
  68         set_vmixer_gain(chip, 1, 1, 0);
  69         set_vmixer_gain(chip, 0, 2, 0);
  70         set_vmixer_gain(chip, 1, 3, 0);
  71         set_vmixer_gain(chip, 0, 4, 0);
  72         set_vmixer_gain(chip, 1, 5, 0);
  73         set_vmixer_gain(chip, 0, 6, 0);
  74         set_vmixer_gain(chip, 1, 7, 0);
  75         err = update_vmixer_level(chip);
  76
  77         DE_INIT(("init_hw done\n"));
  78         return err;
  79 }
  80
  81
  82
  83 static u32 detect_input_clocks(const struct echoaudio *chip)
  84 {
  85         return ECHO_CLOCK_BIT_INTERNAL;
  86 }
  87
  88
  89
  90 /* The IndigoIO has no ASIC. Just do nothing */
  91 static int load_asic(struct echoaudio *chip)
  92 {
  93         return 0;
  94 }
  95
  96
  97
  98 static int set_sample_rate(struct echoaudio *chip, u32 rate)
  99 {
 100         if (wait_handshake(chip))
 101                 return -EIO;
 102
 103         chip->sample_rate = rate;
 104         chip->comm_page->sample_rate = cpu_to_le32(rate);
 105         clear_handshake(chip);
 106         return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
 107 }
 108
 109
 110
 111 /* This function routes the sound from a virtual channel to a real output */
 112 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
 113                            int gain)
 114 {
 115         int index;
 116
 117         snd_assert(pipe < num_pipes_out(chip) &&
 118                    output < num_busses_out(chip), return -EINVAL);
 119
 120         if (wait_handshake(chip))
 121                 return -EIO;
 122
 123         chip->vmixer_gain[output][pipe] = gain;
 124         index = output * num_pipes_out(chip) + pipe;
 125         chip->comm_page->vmixer[index] = gain;
 126
 127         DE_ACT(("set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain));
 128         return 0;
 129 }
 130
 131
 132
 133 /* Tell the DSP to read and update virtual mixer levels in comm page. */
 134 static int update_vmixer_level(struct echoaudio *chip)
 135 {
 136         if (wait_handshake(chip))
 137                 return -EIO;
 138         clear_handshake(chip);
 139         return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
 140 }
 141