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131 lines
3.4 KiB
131 lines
3.4 KiB
/*************************************************************************** |
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Copyright Echo Digital Audio Corporation (c) 1998 - 2004 |
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All rights reserved |
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www.echoaudio.com |
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This file is part of Echo Digital Audio's generic driver library. |
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Echo Digital Audio's generic driver library is free software; |
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you can redistribute it and/or modify it under the terms of |
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the GNU General Public License as published by the Free Software |
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Foundation. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
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MA 02111-1307, USA. |
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************************************************************************* |
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Translation from C++ and adaptation for use in ALSA-Driver |
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were made by Giuliano Pochini <[email protected]> |
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****************************************************************************/ |
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static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id) |
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{ |
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int err; |
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if (snd_BUG_ON((subdevice_id & 0xfff0) != DARLA20)) |
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return -ENODEV; |
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err = init_dsp_comm_page(chip); |
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if (err) { |
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dev_err(chip->card->dev, |
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"init_hw: could not initialize DSP comm page\n"); |
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return err; |
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} |
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chip->device_id = device_id; |
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chip->subdevice_id = subdevice_id; |
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chip->bad_board = true; |
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chip->dsp_code_to_load = FW_DARLA20_DSP; |
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chip->spdif_status = GD_SPDIF_STATUS_UNDEF; |
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chip->clock_state = GD_CLOCK_UNDEF; |
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/* Since this card has no ASIC, mark it as loaded so everything |
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works OK */ |
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chip->asic_loaded = true; |
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chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL; |
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err = load_firmware(chip); |
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if (err < 0) |
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return err; |
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chip->bad_board = false; |
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return err; |
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} |
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static int set_mixer_defaults(struct echoaudio *chip) |
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{ |
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return init_line_levels(chip); |
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} |
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/* The Darla20 has no external clock sources */ |
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static u32 detect_input_clocks(const struct echoaudio *chip) |
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{ |
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return ECHO_CLOCK_BIT_INTERNAL; |
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} |
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/* The Darla20 has no ASIC. Just do nothing */ |
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static int load_asic(struct echoaudio *chip) |
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{ |
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return 0; |
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} |
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static int set_sample_rate(struct echoaudio *chip, u32 rate) |
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{ |
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u8 clock_state, spdif_status; |
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if (wait_handshake(chip)) |
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return -EIO; |
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switch (rate) { |
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case 44100: |
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clock_state = GD_CLOCK_44; |
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spdif_status = GD_SPDIF_STATUS_44; |
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break; |
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case 48000: |
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clock_state = GD_CLOCK_48; |
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spdif_status = GD_SPDIF_STATUS_48; |
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break; |
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default: |
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clock_state = GD_CLOCK_NOCHANGE; |
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spdif_status = GD_SPDIF_STATUS_NOCHANGE; |
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break; |
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} |
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if (chip->clock_state == clock_state) |
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clock_state = GD_CLOCK_NOCHANGE; |
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if (spdif_status == chip->spdif_status) |
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spdif_status = GD_SPDIF_STATUS_NOCHANGE; |
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chip->comm_page->sample_rate = cpu_to_le32(rate); |
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chip->comm_page->gd_clock_state = clock_state; |
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chip->comm_page->gd_spdif_status = spdif_status; |
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chip->comm_page->gd_resampler_state = 3; /* magic number - should always be 3 */ |
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/* Save the new audio state if it changed */ |
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if (clock_state != GD_CLOCK_NOCHANGE) |
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chip->clock_state = clock_state; |
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if (spdif_status != GD_SPDIF_STATUS_NOCHANGE) |
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chip->spdif_status = spdif_status; |
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chip->sample_rate = rate; |
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clear_handshake(chip); |
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return send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE); |
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}
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