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289 lines
7.0 KiB
289 lines
7.0 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 read_dsp(struct echoaudio *chip, u32 *data); |
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static int set_professional_spdif(struct echoaudio *chip, char prof); |
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static int load_asic_generic(struct echoaudio *chip, u32 cmd, short asic); |
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static int check_asic_status(struct echoaudio *chip); |
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static int update_flags(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) != LAYLA20)) |
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return -ENODEV; |
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if ((err = init_dsp_comm_page(chip))) { |
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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->has_midi = true; |
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chip->dsp_code_to_load = FW_LAYLA20_DSP; |
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chip->input_clock_types = |
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ECHO_CLOCK_BIT_INTERNAL | ECHO_CLOCK_BIT_SPDIF | |
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ECHO_CLOCK_BIT_WORD | ECHO_CLOCK_BIT_SUPER; |
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chip->output_clock_types = |
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ECHO_CLOCK_BIT_WORD | ECHO_CLOCK_BIT_SUPER; |
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if ((err = load_firmware(chip)) < 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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chip->professional_spdif = false; |
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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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u32 clocks_from_dsp, clock_bits; |
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/* Map the DSP clock detect bits to the generic driver clock detect bits */ |
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clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks); |
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clock_bits = ECHO_CLOCK_BIT_INTERNAL; |
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if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF) |
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clock_bits |= ECHO_CLOCK_BIT_SPDIF; |
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if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_WORD) { |
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if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SUPER) |
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clock_bits |= ECHO_CLOCK_BIT_SUPER; |
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else |
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clock_bits |= ECHO_CLOCK_BIT_WORD; |
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} |
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return clock_bits; |
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} |
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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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This routine sometimes fails for Layla20; for Layla20, the loop runs |
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5 times and succeeds if it wins on three of the loops. */ |
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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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int goodcnt, i; |
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chip->asic_loaded = false; |
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for (i = goodcnt = 0; i < 5; i++) { |
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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 |
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the 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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return -EIO; |
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} |
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if (asic_status == ASIC_ALREADY_LOADED) { |
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if (++goodcnt == 3) { |
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chip->asic_loaded = true; |
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return 0; |
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} |
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} |
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} |
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return -EIO; |
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} |
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/* Layla20 has an ASIC in the external box */ |
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static int load_asic(struct echoaudio *chip) |
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{ |
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int err; |
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if (chip->asic_loaded) |
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return 0; |
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err = load_asic_generic(chip, DSP_FNC_LOAD_LAYLA_ASIC, |
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FW_LAYLA20_ASIC); |
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if (err < 0) |
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return err; |
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/* Check if ASIC is alive and well. */ |
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return check_asic_status(chip); |
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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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if (snd_BUG_ON(rate < 8000 || rate > 50000)) |
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return -EINVAL; |
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/* Only set the clock for internal mode. Do not return failure, |
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simply treat it as a non-event. */ |
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if (chip->input_clock != ECHO_CLOCK_INTERNAL) { |
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dev_warn(chip->card->dev, |
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"Cannot set sample rate - clock not set to CLK_CLOCKININTERNAL\n"); |
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chip->comm_page->sample_rate = cpu_to_le32(rate); |
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chip->sample_rate = rate; |
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return 0; |
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} |
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if (wait_handshake(chip)) |
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return -EIO; |
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dev_dbg(chip->card->dev, "set_sample_rate(%d)\n", rate); |
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chip->sample_rate = rate; |
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chip->comm_page->sample_rate = cpu_to_le32(rate); |
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clear_handshake(chip); |
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return send_vector(chip, DSP_VC_SET_LAYLA_SAMPLE_RATE); |
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} |
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static int set_input_clock(struct echoaudio *chip, u16 clock_source) |
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{ |
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u16 clock; |
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u32 rate; |
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rate = 0; |
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switch (clock_source) { |
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case ECHO_CLOCK_INTERNAL: |
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rate = chip->sample_rate; |
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clock = LAYLA20_CLOCK_INTERNAL; |
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break; |
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case ECHO_CLOCK_SPDIF: |
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clock = LAYLA20_CLOCK_SPDIF; |
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break; |
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case ECHO_CLOCK_WORD: |
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clock = LAYLA20_CLOCK_WORD; |
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break; |
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case ECHO_CLOCK_SUPER: |
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clock = LAYLA20_CLOCK_SUPER; |
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break; |
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default: |
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dev_err(chip->card->dev, |
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"Input clock 0x%x not supported for Layla24\n", |
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clock_source); |
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return -EINVAL; |
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} |
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chip->input_clock = clock_source; |
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chip->comm_page->input_clock = cpu_to_le16(clock); |
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clear_handshake(chip); |
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send_vector(chip, DSP_VC_UPDATE_CLOCKS); |
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if (rate) |
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set_sample_rate(chip, rate); |
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return 0; |
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} |
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static int set_output_clock(struct echoaudio *chip, u16 clock) |
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{ |
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switch (clock) { |
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case ECHO_CLOCK_SUPER: |
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clock = LAYLA20_OUTPUT_CLOCK_SUPER; |
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break; |
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case ECHO_CLOCK_WORD: |
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clock = LAYLA20_OUTPUT_CLOCK_WORD; |
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break; |
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default: |
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dev_err(chip->card->dev, "set_output_clock wrong clock\n"); |
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return -EINVAL; |
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} |
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if (wait_handshake(chip)) |
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return -EIO; |
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chip->comm_page->output_clock = cpu_to_le16(clock); |
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chip->output_clock = clock; |
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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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/* Set input bus gain (one unit is 0.5dB !) */ |
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static int set_input_gain(struct echoaudio *chip, u16 input, int gain) |
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{ |
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if (snd_BUG_ON(input >= num_busses_in(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->input_gain[input] = gain; |
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gain += GL20_INPUT_GAIN_MAGIC_NUMBER; |
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chip->comm_page->line_in_level[input] = gain; |
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return 0; |
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} |
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/* Tell the DSP to reread the flags from the comm page */ |
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static int update_flags(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_UPDATE_FLAGS); |
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} |
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static int set_professional_spdif(struct echoaudio *chip, char prof) |
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{ |
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if (prof) |
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chip->comm_page->flags |= |
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cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF); |
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else |
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chip->comm_page->flags &= |
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~cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF); |
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chip->professional_spdif = prof; |
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return update_flags(chip); |
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}
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