LXR linux/sound/pci/echoaudio/gina20

   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_professional_spdif(struct echoaudio *chip, char prof);
  33static int update_flags(struct echoaudio *chip);
  34
  35
  36static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
  37{
  38        int err;
  39
  40        if (snd_BUG_ON((subdevice_id & 0xfff0) != GINA20))
  41                return -ENODEV;
  42
  43        if ((err = init_dsp_comm_page(chip))) {
  44                dev_err(chip->card->dev,
  45                        "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 = FW_GINA20_DSP;
  53        chip->spdif_status = GD_SPDIF_STATUS_UNDEF;
  54        chip->clock_state = GD_CLOCK_UNDEF;
  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                ECHO_CLOCK_BIT_SPDIF;
  60
  61        if ((err = load_firmware(chip)) < 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        chip->professional_spdif = false;
  73        return init_line_levels(chip);
  74}
  75
  76
  77
  78static u32 detect_input_clocks(const struct echoaudio *chip)
  79{
  80        u32 clocks_from_dsp, clock_bits;
  81
  82        /* Map the DSP clock detect bits to the generic driver clock
  83           detect bits */
  84        clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
  85
  86        clock_bits = ECHO_CLOCK_BIT_INTERNAL;
  87
  88        if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF)
  89                clock_bits |= ECHO_CLOCK_BIT_SPDIF;
  90
  91        return clock_bits;
  92}
  93
  94
  95
  96/* The Gina20 has no ASIC. Just do nothing */
  97static int load_asic(struct echoaudio *chip)
  98{
  99        return 0;
 100}
 101
 102
 103
 104static int set_sample_rate(struct echoaudio *chip, u32 rate)
 105{
 106        u8 clock_state, spdif_status;
 107
 108        if (wait_handshake(chip))
 109                return -EIO;
 110
 111        switch (rate) {
 112        case 44100:
 113                clock_state = GD_CLOCK_44;
 114                spdif_status = GD_SPDIF_STATUS_44;
 115                break;
 116        case 48000:
 117                clock_state = GD_CLOCK_48;
 118                spdif_status = GD_SPDIF_STATUS_48;
 119                break;
 120        default:
 121                clock_state = GD_CLOCK_NOCHANGE;
 122                spdif_status = GD_SPDIF_STATUS_NOCHANGE;
 123                break;
 124        }
 125
 126        if (chip->clock_state == clock_state)
 127                clock_state = GD_CLOCK_NOCHANGE;
 128        if (spdif_status == chip->spdif_status)
 129                spdif_status = GD_SPDIF_STATUS_NOCHANGE;
 130
 131        chip->comm_page->sample_rate = cpu_to_le32(rate);
 132        chip->comm_page->gd_clock_state = clock_state;
 133        chip->comm_page->gd_spdif_status = spdif_status;
 134        chip->comm_page->gd_resampler_state = 3;        /* magic number - should always be 3 */
 135
 136        /* Save the new audio state if it changed */
 137        if (clock_state != GD_CLOCK_NOCHANGE)
 138                chip->clock_state = clock_state;
 139        if (spdif_status != GD_SPDIF_STATUS_NOCHANGE)
 140                chip->spdif_status = spdif_status;
 141        chip->sample_rate = rate;
 142
 143        clear_handshake(chip);
 144        return send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE);
 145}
 146
 147
 148
 149static int set_input_clock(struct echoaudio *chip, u16 clock)
 150{
 151
 152        switch (clock) {
 153        case ECHO_CLOCK_INTERNAL:
 154                /* Reset the audio state to unknown (just in case) */
 155                chip->clock_state = GD_CLOCK_UNDEF;
 156                chip->spdif_status = GD_SPDIF_STATUS_UNDEF;
 157                set_sample_rate(chip, chip->sample_rate);
 158                chip->input_clock = clock;
 159                break;
 160        case ECHO_CLOCK_SPDIF:
 161                chip->comm_page->gd_clock_state = GD_CLOCK_SPDIFIN;
 162                chip->comm_page->gd_spdif_status = GD_SPDIF_STATUS_NOCHANGE;
 163                clear_handshake(chip);
 164                send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE);
 165                chip->clock_state = GD_CLOCK_SPDIFIN;
 166                chip->input_clock = clock;
 167                break;
 168        default:
 169                return -EINVAL;
 170        }
 171
 172        return 0;
 173}
 174
 175
 176
 177/* Set input bus gain (one unit is 0.5dB !) */
 178static int set_input_gain(struct echoaudio *chip, u16 input, int gain)
 179{
 180        if (snd_BUG_ON(input >= num_busses_in(chip)))
 181                return -EINVAL;
 182
 183        if (wait_handshake(chip))
 184                return -EIO;
 185
 186        chip->input_gain[input] = gain;
 187        gain += GL20_INPUT_GAIN_MAGIC_NUMBER;
 188        chip->comm_page->line_in_level[input] = gain;
 189        return 0;
 190}
 191
 192
 193
 194/* Tell the DSP to reread the flags from the comm page */
 195static int update_flags(struct echoaudio *chip)
 196{
 197        if (wait_handshake(chip))
 198                return -EIO;
 199        clear_handshake(chip);
 200        return send_vector(chip, DSP_VC_UPDATE_FLAGS);
 201}
 202
 203
 204
 205static int set_professional_spdif(struct echoaudio *chip, char prof)
 206{
 207        if (prof)
 208                chip->comm_page->flags |=
 209                        cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
 210        else
 211                chip->comm_page->flags &=
 212                        ~cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
 213        chip->professional_spdif = prof;
 214        return update_flags(chip);
 215}
 216