294 lines
7.3 KiB
C
294 lines
7.3 KiB
C
/****************************************************************************
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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 <pochini@shiny.it>
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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,
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const struct firmware *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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DE_INIT(("init_hw() - Layla20\n"));
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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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DE_INIT(("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 = &card_fw[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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if ((err = init_line_levels(chip)) < 0)
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return err;
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err = set_professional_spdif(chip, TRUE);
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DE_INIT(("init_hw done\n"));
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return err;
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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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DE_ACT(("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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&card_fw[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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DE_ACT(("set_sample_rate: Cannot set sample rate - "
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"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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DE_ACT(("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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DE_ACT(("set_input_clock:\n"));
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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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DE_ACT(("Set Layla20 clock to INTERNAL\n"));
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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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DE_ACT(("Set Layla20 clock to SPDIF\n"));
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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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DE_ACT(("Set Layla20 clock to WORD\n"));
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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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DE_ACT(("Set Layla20 clock to SUPER\n"));
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clock = LAYLA20_CLOCK_SUPER;
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break;
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default:
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DE_ACT(("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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DE_ACT(("set_output_clock: %d\n", clock));
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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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DE_ACT(("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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DE_ACT(("set_professional_spdif %d\n", prof));
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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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