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167 lines
3.9 KiB
167 lines
3.9 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 set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe, |
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int gain); |
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static int update_vmixer_level(struct echoaudio *chip); |
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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) != INDIGO)) |
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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_INDIGO_DSP; |
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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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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 Indigo 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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u32 control_reg; |
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switch (rate) { |
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case 96000: |
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control_reg = MIA_96000; |
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break; |
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case 88200: |
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control_reg = MIA_88200; |
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break; |
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case 48000: |
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control_reg = MIA_48000; |
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break; |
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case 44100: |
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control_reg = MIA_44100; |
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break; |
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case 32000: |
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control_reg = MIA_32000; |
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break; |
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default: |
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dev_err(chip->card->dev, |
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"set_sample_rate: %d invalid!\n", rate); |
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return -EINVAL; |
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} |
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/* Set the control register if it has changed */ |
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if (control_reg != le32_to_cpu(chip->comm_page->control_register)) { |
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if (wait_handshake(chip)) |
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return -EIO; |
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chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP */ |
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chip->comm_page->control_register = cpu_to_le32(control_reg); |
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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_UPDATE_CLOCKS); |
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} |
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return 0; |
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} |
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/* This function routes the sound from a virtual channel to a real output */ |
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static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe, |
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int gain) |
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{ |
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int index; |
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if (snd_BUG_ON(pipe >= num_pipes_out(chip) || |
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output >= num_busses_out(chip))) |
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return -EINVAL; |
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if (wait_handshake(chip)) |
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return -EIO; |
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chip->vmixer_gain[output][pipe] = gain; |
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index = output * num_pipes_out(chip) + pipe; |
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chip->comm_page->vmixer[index] = gain; |
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dev_dbg(chip->card->dev, |
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"set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain); |
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return 0; |
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} |
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/* Tell the DSP to read and update virtual mixer levels in comm page. */ |
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static int update_vmixer_level(struct echoaudio *chip) |
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{ |
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if (wait_handshake(chip)) |
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return -EIO; |
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clear_handshake(chip); |
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return send_vector(chip, DSP_VC_SET_VMIXER_GAIN); |
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} |
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