release/src-rt-6.x/linux/linux-2.6/sound/pci/echoaudio/indigo_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\n"));
  42         snd_assert((subdevice_id & 0xfff0) == INDIGO, 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_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 Indigo 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         u32 control_reg;
 101
 102         switch (rate) {
 103         case 96000:
 104                 control_reg = MIA_96000;
 105                 break;
 106         case 88200:
 107                 control_reg = MIA_88200;
 108                 break;
 109         case 48000:
 110                 control_reg = MIA_48000;
 111                 break;
 112         case 44100:
 113                 control_reg = MIA_44100;
 114                 break;
 115         case 32000:
 116                 control_reg = MIA_32000;
 117                 break;
 118         default:
 119                 DE_ACT(("set_sample_rate: %d invalid!\n", rate));
 120                 return -EINVAL;
 121         }
 122
 123         /* Set the control register if it has changed */
 124         if (control_reg != le32_to_cpu(chip->comm_page->control_register)) {
 125                 if (wait_handshake(chip))
 126                         return -EIO;
 127
 128                 chip->comm_page->sample_rate = cpu_to_le32(rate);       /* ignored by the DSP */
 129                 chip->comm_page->control_register = cpu_to_le32(control_reg);
 130                 chip->sample_rate = rate;
 131
 132                 clear_handshake(chip);
 133                 return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
 134         }
 135         return 0;
 136 }
 137
 138
 139
 140 /* This function routes the sound from a virtual channel to a real output */
 141 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
 142                            int gain)
 143 {
 144         int index;
 145
 146         snd_assert(pipe < num_pipes_out(chip) &&
 147                    output < num_busses_out(chip), return -EINVAL);
 148
 149         if (wait_handshake(chip))
 150                 return -EIO;
 151
 152         chip->vmixer_gain[output][pipe] = gain;
 153         index = output * num_pipes_out(chip) + pipe;
 154         chip->comm_page->vmixer[index] = gain;
 155
 156         DE_ACT(("set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain));
 157         return 0;
 158 }
 159
 160
 161
 162 /* Tell the DSP to read and update virtual mixer levels in comm page. */
 163 static int update_vmixer_level(struct echoaudio *chip)
 164 {
 165         if (wait_handshake(chip))
 166                 return -EIO;
 167         clear_handshake(chip);
 168         return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
 169 }
 170