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        DE_INIT(("init_hw() - Gina20\n"));
  41        if (snd_BUG_ON((subdevice_id & 0xfff0) != GINA20))
  42                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 = 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        DE_INIT(("init_hw done\n"));
  66        return err;
  67}
  68
  69
  70
  71static int set_mixer_defaults(struct echoaudio *chip)
  72{
  73        chip->professional_spdif = FALSE;
  74        return init_line_levels(chip);
  75}
  76
  77
  78
  79static u32 detect_input_clocks(const struct echoaudio *chip)
  80{
  81        u32 clocks_from_dsp, clock_bits;
  82
  83        /* Map the DSP clock detect bits to the generic driver clock
  84           detect bits */
  85        clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
  86
  87        clock_bits = ECHO_CLOCK_BIT_INTERNAL;
  88
  89        if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF)
  90                clock_bits |= ECHO_CLOCK_BIT_SPDIF;
  91
  92        return clock_bits;
  93}
  94
  95
  96
  97/* The Gina20 has no ASIC. Just do nothing */
  98static int load_asic(struct echoaudio *chip)
  99{
 100        return 0;
 101}
 102
 103
 104
 105static int set_sample_rate(struct echoaudio *chip, u32 rate)
 106{
 107        u8 clock_state, spdif_status;
 108
 109        if (wait_handshake(chip))
 110                return -EIO;
 111
 112        switch (rate) {
 113        case 44100:
 114                clock_state = GD_CLOCK_44;
 115                spdif_status = GD_SPDIF_STATUS_44;
 116                break;
 117        case 48000:
 118                clock_state = GD_CLOCK_48;
 119                spdif_status = GD_SPDIF_STATUS_48;
 120                break;
 121        default:
 122                clock_state = GD_CLOCK_NOCHANGE;
 123                spdif_status = GD_SPDIF_STATUS_NOCHANGE;
 124                break;
 125        }
 126
 127        if (chip->clock_state == clock_state)
 128                clock_state = GD_CLOCK_NOCHANGE;
 129        if (spdif_status == chip->spdif_status)
 130                spdif_status = GD_SPDIF_STATUS_NOCHANGE;
 131
 132        chip->comm_page->sample_rate = cpu_to_le32(rate);
 133        chip->comm_page->gd_clock_state = clock_state;
 134        chip->comm_page->gd_spdif_status = spdif_status;
 135        chip->comm_page->gd_resampler_state = 3;        /* magic number - should always be 3 */
 136
 137        /* Save the new audio state if it changed */
 138        if (clock_state != GD_CLOCK_NOCHANGE)
 139                chip->clock_state = clock_state;
 140        if (spdif_status != GD_SPDIF_STATUS_NOCHANGE)
 141                chip->spdif_status = spdif_status;
 142        chip->sample_rate = rate;
 143
 144        clear_handshake(chip);
 145        return send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE);
 146}
 147
 148
 149
 150static int set_input_clock(struct echoaudio *chip, u16 clock)
 151{
 152        DE_ACT(("set_input_clock:\n"));
 153
 154        switch (clock) {
 155        case ECHO_CLOCK_INTERNAL:
 156                /* Reset the audio state to unknown (just in case) */
 157                chip->clock_state = GD_CLOCK_UNDEF;
 158                chip->spdif_status = GD_SPDIF_STATUS_UNDEF;
 159                set_sample_rate(chip, chip->sample_rate);
 160                chip->input_clock = clock;
 161                DE_ACT(("Set Gina clock to INTERNAL\n"));
 162                break;
 163        case ECHO_CLOCK_SPDIF:
 164                chip->comm_page->gd_clock_state = GD_CLOCK_SPDIFIN;
 165                chip->comm_page->gd_spdif_status = GD_SPDIF_STATUS_NOCHANGE;
 166                clear_handshake(chip);
 167                send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE);
 168                chip->clock_state = GD_CLOCK_SPDIFIN;
 169                DE_ACT(("Set Gina20 clock to SPDIF\n"));
 170                chip->input_clock = clock;
 171                break;
 172        default:
 173                return -EINVAL;
 174        }
 175
 176        return 0;
 177}
 178
 179
 180
 181/* Set input bus gain (one unit is 0.5dB !) */
 182static int set_input_gain(struct echoaudio *chip, u16 input, int gain)
 183{
 184        if (snd_BUG_ON(input >= num_busses_in(chip)))
 185                return -EINVAL;
 186
 187        if (wait_handshake(chip))
 188                return -EIO;
 189
 190        chip->input_gain[input] = gain;
 191        gain += GL20_INPUT_GAIN_MAGIC_NUMBER;
 192        chip->comm_page->line_in_level[input] = gain;
 193        return 0;
 194}
 195
 196
 197
 198/* Tell the DSP to reread the flags from the comm page */
 199static int update_flags(struct echoaudio *chip)
 200{
 201        if (wait_handshake(chip))
 202                return -EIO;
 203        clear_handshake(chip);
 204        return send_vector(chip, DSP_VC_UPDATE_FLAGS);
 205}
 206
 207
 208
 209static int set_professional_spdif(struct echoaudio *chip, char prof)
 210{
 211        DE_ACT(("set_professional_spdif %d\n", prof));
 212        if (prof)
 213                chip->comm_page->flags |=
 214                        cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
 215        else
 216                chip->comm_page->flags &=
 217                        ~cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
 218        chip->professional_spdif = prof;
 219        return update_flags(chip);
 220}
 221