git.oblomov.eu Git - linux-2.6/blob - sound/pci/echoaudio/echo3g_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 static int load_asic(struct echoaudio *chip);
  32 static int dsp_set_digital_mode(struct echoaudio *chip, u8 mode);
  33 static int set_digital_mode(struct echoaudio *chip, u8 mode);
  34 static int check_asic_status(struct echoaudio *chip);
  35 static int set_sample_rate(struct echoaudio *chip, u32 rate);
  36 static int set_input_clock(struct echoaudio *chip, u16 clock);
  37 static int set_professional_spdif(struct echoaudio *chip, char prof);
  38 static int set_phantom_power(struct echoaudio *chip, char on);
  39 static int write_control_reg(struct echoaudio *chip, u32 ctl, u32 frq,
  40                              char force);
  41
  42 #include <linux/interrupt.h>
  43
  44 static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
  45 {
  46         int err;
  47
  48         local_irq_enable();
  49         DE_INIT(("init_hw() - Echo3G\n"));
  50         if (snd_BUG_ON((subdevice_id & 0xfff0) != ECHO3G))
  51                 return -ENODEV;
  52
  53         if ((err = init_dsp_comm_page(chip))) {
  54                 DE_INIT(("init_hw - could not initialize DSP comm page\n"));
  55                 return err;
  56         }
  57
  58         chip->comm_page->e3g_frq_register =
  59                 cpu_to_le32((E3G_MAGIC_NUMBER / 48000) - 2);
  60         chip->device_id = device_id;
  61         chip->subdevice_id = subdevice_id;
  62         chip->bad_board = TRUE;
  63         chip->has_midi = TRUE;
  64         chip->dsp_code_to_load = &card_fw[FW_ECHO3G_DSP];
  65
  66         /* Load the DSP code and the ASIC on the PCI card and get
  67         what type of external box is attached */
  68         err = load_firmware(chip);
  69
  70         if (err < 0) {
  71                 return err;
  72         } else if (err == E3G_GINA3G_BOX_TYPE) {
  73                 chip->input_clock_types =       ECHO_CLOCK_BIT_INTERNAL |
  74                                                 ECHO_CLOCK_BIT_SPDIF |
  75                                                 ECHO_CLOCK_BIT_ADAT;
  76                 chip->card_name = "Gina3G";
  77                 chip->px_digital_out = chip->bx_digital_out = 6;
  78                 chip->px_analog_in = chip->bx_analog_in = 14;
  79                 chip->px_digital_in = chip->bx_digital_in = 16;
  80                 chip->px_num = chip->bx_num = 24;
  81                 chip->has_phantom_power = TRUE;
  82                 chip->hasnt_input_nominal_level = TRUE;
  83         } else if (err == E3G_LAYLA3G_BOX_TYPE) {
  84                 chip->input_clock_types =       ECHO_CLOCK_BIT_INTERNAL |
  85                                                 ECHO_CLOCK_BIT_SPDIF |
  86                                                 ECHO_CLOCK_BIT_ADAT |
  87                                                 ECHO_CLOCK_BIT_WORD;
  88                 chip->card_name = "Layla3G";
  89                 chip->px_digital_out = chip->bx_digital_out = 8;
  90                 chip->px_analog_in = chip->bx_analog_in = 16;
  91                 chip->px_digital_in = chip->bx_digital_in = 24;
  92                 chip->px_num = chip->bx_num = 32;
  93         } else {
  94                 return -ENODEV;
  95         }
  96
  97         chip->digital_modes =   ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_RCA |
  98                                 ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_OPTICAL |
  99                                 ECHOCAPS_HAS_DIGITAL_MODE_ADAT;
 100         chip->digital_mode =    DIGITAL_MODE_SPDIF_RCA;
 101         chip->professional_spdif = FALSE;
 102         chip->non_audio_spdif = FALSE;
 103         chip->bad_board = FALSE;
 104
 105         if ((err = init_line_levels(chip)) < 0)
 106                 return err;
 107         err = set_digital_mode(chip, DIGITAL_MODE_SPDIF_RCA);
 108         if (err < 0)
 109                 return err;
 110         err = set_phantom_power(chip, 0);
 111         if (err < 0)
 112                 return err;
 113         err = set_professional_spdif(chip, TRUE);
 114
 115         DE_INIT(("init_hw done\n"));
 116         return err;
 117 }
 118
 119
 120
 121 static int set_phantom_power(struct echoaudio *chip, char on)
 122 {
 123         u32 control_reg = le32_to_cpu(chip->comm_page->control_register);
 124
 125         if (on)
 126                 control_reg |= E3G_PHANTOM_POWER;
 127         else
 128                 control_reg &= ~E3G_PHANTOM_POWER;
 129
 130         chip->phantom_power = on;
 131         return write_control_reg(chip, control_reg,
 132                                  le32_to_cpu(chip->comm_page->e3g_frq_register),
 133                                  0);
 134 }