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204 lines
5.9 KiB
204 lines
5.9 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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/* These functions are common for Gina24, Layla24 and Mona cards */ |
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/* ASIC status check - some cards have one or two ASICs that need to be |
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loaded. Once that load is complete, this function is called to see if |
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the load was successful. |
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If this load fails, it does not necessarily mean that the hardware is |
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defective - the external box may be disconnected or turned off. */ |
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static int check_asic_status(struct echoaudio *chip) |
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{ |
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u32 asic_status; |
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send_vector(chip, DSP_VC_TEST_ASIC); |
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/* The DSP will return a value to indicate whether or not the |
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ASIC is currently loaded */ |
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if (read_dsp(chip, &asic_status) < 0) { |
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dev_err(chip->card->dev, |
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"check_asic_status: failed on read_dsp\n"); |
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chip->asic_loaded = false; |
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return -EIO; |
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} |
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chip->asic_loaded = (asic_status == ASIC_ALREADY_LOADED); |
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return chip->asic_loaded ? 0 : -EIO; |
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} |
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/* Most configuration of Gina24, Layla24, or Mona is accomplished by writing |
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the control register. write_control_reg sends the new control register |
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value to the DSP. */ |
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static int write_control_reg(struct echoaudio *chip, u32 value, char force) |
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{ |
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__le32 reg_value; |
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/* Handle the digital input auto-mute */ |
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if (chip->digital_in_automute) |
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value |= GML_DIGITAL_IN_AUTO_MUTE; |
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else |
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value &= ~GML_DIGITAL_IN_AUTO_MUTE; |
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dev_dbg(chip->card->dev, "write_control_reg: 0x%x\n", value); |
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/* Write the control register */ |
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reg_value = cpu_to_le32(value); |
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if (reg_value != chip->comm_page->control_register || force) { |
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if (wait_handshake(chip)) |
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return -EIO; |
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chip->comm_page->control_register = reg_value; |
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clear_handshake(chip); |
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return send_vector(chip, DSP_VC_WRITE_CONTROL_REG); |
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} |
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return 0; |
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} |
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/* Gina24, Layla24, and Mona support digital input auto-mute. If the digital |
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input auto-mute is enabled, the DSP will only enable the digital inputs if |
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the card is syncing to a valid clock on the ADAT or S/PDIF inputs. |
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If the auto-mute is disabled, the digital inputs are enabled regardless of |
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what the input clock is set or what is connected. */ |
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static int set_input_auto_mute(struct echoaudio *chip, int automute) |
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{ |
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dev_dbg(chip->card->dev, "set_input_auto_mute %d\n", automute); |
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chip->digital_in_automute = automute; |
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/* Re-set the input clock to the current value - indirectly causes |
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the auto-mute flag to be sent to the DSP */ |
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return set_input_clock(chip, chip->input_clock); |
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} |
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/* S/PDIF coax / S/PDIF optical / ADAT - switch */ |
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static int set_digital_mode(struct echoaudio *chip, u8 mode) |
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{ |
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u8 previous_mode; |
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int err, i, o; |
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if (chip->bad_board) |
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return -EIO; |
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/* All audio channels must be closed before changing the digital mode */ |
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if (snd_BUG_ON(chip->pipe_alloc_mask)) |
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return -EAGAIN; |
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if (snd_BUG_ON(!(chip->digital_modes & (1 << mode)))) |
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return -EINVAL; |
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previous_mode = chip->digital_mode; |
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err = dsp_set_digital_mode(chip, mode); |
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/* If we successfully changed the digital mode from or to ADAT, |
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then make sure all output, input and monitor levels are |
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updated by the DSP comm object. */ |
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if (err >= 0 && previous_mode != mode && |
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(previous_mode == DIGITAL_MODE_ADAT || mode == DIGITAL_MODE_ADAT)) { |
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spin_lock_irq(&chip->lock); |
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for (o = 0; o < num_busses_out(chip); o++) |
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for (i = 0; i < num_busses_in(chip); i++) |
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set_monitor_gain(chip, o, i, |
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chip->monitor_gain[o][i]); |
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#ifdef ECHOCARD_HAS_INPUT_GAIN |
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for (i = 0; i < num_busses_in(chip); i++) |
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set_input_gain(chip, i, chip->input_gain[i]); |
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update_input_line_level(chip); |
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#endif |
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for (o = 0; o < num_busses_out(chip); o++) |
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set_output_gain(chip, o, chip->output_gain[o]); |
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update_output_line_level(chip); |
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spin_unlock_irq(&chip->lock); |
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} |
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return err; |
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} |
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/* Set the S/PDIF output format */ |
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static int set_professional_spdif(struct echoaudio *chip, char prof) |
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{ |
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u32 control_reg; |
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int err; |
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/* Clear the current S/PDIF flags */ |
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control_reg = le32_to_cpu(chip->comm_page->control_register); |
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control_reg &= GML_SPDIF_FORMAT_CLEAR_MASK; |
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/* Set the new S/PDIF flags depending on the mode */ |
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control_reg |= GML_SPDIF_TWO_CHANNEL | GML_SPDIF_24_BIT | |
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GML_SPDIF_COPY_PERMIT; |
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if (prof) { |
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/* Professional mode */ |
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control_reg |= GML_SPDIF_PRO_MODE; |
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switch (chip->sample_rate) { |
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case 32000: |
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control_reg |= GML_SPDIF_SAMPLE_RATE0 | |
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GML_SPDIF_SAMPLE_RATE1; |
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break; |
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case 44100: |
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control_reg |= GML_SPDIF_SAMPLE_RATE0; |
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break; |
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case 48000: |
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control_reg |= GML_SPDIF_SAMPLE_RATE1; |
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break; |
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} |
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} else { |
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/* Consumer mode */ |
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switch (chip->sample_rate) { |
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case 32000: |
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control_reg |= GML_SPDIF_SAMPLE_RATE0 | |
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GML_SPDIF_SAMPLE_RATE1; |
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break; |
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case 48000: |
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control_reg |= GML_SPDIF_SAMPLE_RATE1; |
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break; |
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} |
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} |
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err = write_control_reg(chip, control_reg, false); |
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if (err) |
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return err; |
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chip->professional_spdif = prof; |
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dev_dbg(chip->card->dev, "set_professional_spdif to %s\n", |
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prof ? "Professional" : "Consumer"); |
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return 0; |
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}
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