399 lines
10 KiB
C
399 lines
10 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 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 write_control_reg(struct echoaudio *chip, u32 value, char force);
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static int set_input_clock(struct echoaudio *chip, u16 clock);
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static int set_professional_spdif(struct echoaudio *chip, char prof);
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static int set_digital_mode(struct echoaudio *chip, u8 mode);
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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 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() - Layla24\n"));
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if (snd_BUG_ON((subdevice_id & 0xfff0) != LAYLA24))
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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 = FW_LAYLA24_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_ADAT;
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chip->digital_modes =
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ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_RCA |
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ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_OPTICAL |
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ECHOCAPS_HAS_DIGITAL_MODE_ADAT;
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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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DE_INIT(("init_hw done\n"));
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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->digital_mode = DIGITAL_MODE_SPDIF_RCA;
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chip->professional_spdif = FALSE;
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chip->digital_in_automute = TRUE;
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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 & GML_CLOCK_DETECT_BIT_SPDIF)
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clock_bits |= ECHO_CLOCK_BIT_SPDIF;
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if (clocks_from_dsp & GML_CLOCK_DETECT_BIT_ADAT)
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clock_bits |= ECHO_CLOCK_BIT_ADAT;
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if (clocks_from_dsp & GML_CLOCK_DETECT_BIT_WORD)
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clock_bits |= ECHO_CLOCK_BIT_WORD;
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return clock_bits;
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}
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/* Layla24 has an ASIC on the PCI card and another ASIC in the external box;
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both need to be loaded. */
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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 1;
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DE_INIT(("load_asic\n"));
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/* Give the DSP a few milliseconds to settle down */
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mdelay(10);
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/* Load the ASIC for the PCI card */
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err = load_asic_generic(chip, DSP_FNC_LOAD_LAYLA24_PCI_CARD_ASIC,
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FW_LAYLA24_1_ASIC);
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if (err < 0)
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return err;
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chip->asic_code = FW_LAYLA24_2S_ASIC;
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/* Now give the new ASIC a little time to set up */
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mdelay(10);
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/* Do the external one */
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err = load_asic_generic(chip, DSP_FNC_LOAD_LAYLA24_EXTERNAL_ASIC,
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FW_LAYLA24_2S_ASIC);
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if (err < 0)
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return FALSE;
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/* Now give the external ASIC a little time to set up */
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mdelay(10);
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/* See if it worked */
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err = check_asic_status(chip);
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/* Set up the control register if the load succeeded -
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48 kHz, internal clock, S/PDIF RCA mode */
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if (!err)
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err = write_control_reg(chip, GML_CONVERTER_ENABLE | GML_48KHZ,
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TRUE);
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DE_INIT(("load_asic() done\n"));
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return err;
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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, clock, base_rate;
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if (snd_BUG_ON(rate >= 50000 &&
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chip->digital_mode == DIGITAL_MODE_ADAT))
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return -EINVAL;
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/* Only set the clock for internal mode. */
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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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/* Save the rate anyhow */
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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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/* Get the control register & clear the appropriate bits */
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control_reg = le32_to_cpu(chip->comm_page->control_register);
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control_reg &= GML_CLOCK_CLEAR_MASK & GML_SPDIF_RATE_CLEAR_MASK;
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clock = 0;
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switch (rate) {
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case 96000:
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clock = GML_96KHZ;
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break;
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case 88200:
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clock = GML_88KHZ;
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break;
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case 48000:
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clock = GML_48KHZ | GML_SPDIF_SAMPLE_RATE1;
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break;
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case 44100:
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clock = GML_44KHZ;
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/* Professional mode */
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if (control_reg & GML_SPDIF_PRO_MODE)
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clock |= GML_SPDIF_SAMPLE_RATE0;
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break;
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case 32000:
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clock = GML_32KHZ | GML_SPDIF_SAMPLE_RATE0 |
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GML_SPDIF_SAMPLE_RATE1;
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break;
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case 22050:
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clock = GML_22KHZ;
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break;
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case 16000:
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clock = GML_16KHZ;
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break;
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case 11025:
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clock = GML_11KHZ;
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break;
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case 8000:
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clock = GML_8KHZ;
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break;
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default:
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/* If this is a non-standard rate, then the driver needs to
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use Layla24's special "continuous frequency" mode */
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clock = LAYLA24_CONTINUOUS_CLOCK;
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if (rate > 50000) {
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base_rate = rate >> 1;
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control_reg |= GML_DOUBLE_SPEED_MODE;
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} else {
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base_rate = rate;
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}
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if (base_rate < 25000)
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base_rate = 25000;
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if (wait_handshake(chip))
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return -EIO;
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chip->comm_page->sample_rate =
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cpu_to_le32(LAYLA24_MAGIC_NUMBER / base_rate - 2);
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clear_handshake(chip);
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send_vector(chip, DSP_VC_SET_LAYLA24_FREQUENCY_REG);
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}
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control_reg |= clock;
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chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP ? */
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chip->sample_rate = rate;
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DE_ACT(("set_sample_rate: %d clock %d\n", rate, control_reg));
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return write_control_reg(chip, control_reg, FALSE);
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}
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static int set_input_clock(struct echoaudio *chip, u16 clock)
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{
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u32 control_reg, clocks_from_dsp;
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/* Mask off the clock select bits */
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control_reg = le32_to_cpu(chip->comm_page->control_register) &
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GML_CLOCK_CLEAR_MASK;
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clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
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/* Pick the new clock */
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switch (clock) {
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case ECHO_CLOCK_INTERNAL:
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DE_ACT(("Set Layla24 clock to INTERNAL\n"));
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chip->input_clock = ECHO_CLOCK_INTERNAL;
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return set_sample_rate(chip, chip->sample_rate);
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case ECHO_CLOCK_SPDIF:
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if (chip->digital_mode == DIGITAL_MODE_ADAT)
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return -EAGAIN;
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control_reg |= GML_SPDIF_CLOCK;
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/* Layla24 doesn't support 96KHz S/PDIF */
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control_reg &= ~GML_DOUBLE_SPEED_MODE;
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DE_ACT(("Set Layla24 clock to SPDIF\n"));
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break;
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case ECHO_CLOCK_WORD:
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control_reg |= GML_WORD_CLOCK;
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if (clocks_from_dsp & GML_CLOCK_DETECT_BIT_WORD96)
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control_reg |= GML_DOUBLE_SPEED_MODE;
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else
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control_reg &= ~GML_DOUBLE_SPEED_MODE;
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DE_ACT(("Set Layla24 clock to WORD\n"));
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break;
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case ECHO_CLOCK_ADAT:
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if (chip->digital_mode != DIGITAL_MODE_ADAT)
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return -EAGAIN;
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control_reg |= GML_ADAT_CLOCK;
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control_reg &= ~GML_DOUBLE_SPEED_MODE;
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DE_ACT(("Set Layla24 clock to ADAT\n"));
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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", clock));
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return -EINVAL;
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}
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chip->input_clock = clock;
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return write_control_reg(chip, control_reg, TRUE);
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}
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/* Depending on what digital mode you want, Layla24 needs different ASICs
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loaded. This function checks the ASIC needed for the new mode and sees
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if it matches the one already loaded. */
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static int switch_asic(struct echoaudio *chip, short asic)
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{
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s8 *monitors;
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/* Check to see if this is already loaded */
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if (asic != chip->asic_code) {
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monitors = kmemdup(chip->comm_page->monitors,
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MONITOR_ARRAY_SIZE, GFP_KERNEL);
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if (! monitors)
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return -ENOMEM;
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memset(chip->comm_page->monitors, ECHOGAIN_MUTED,
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MONITOR_ARRAY_SIZE);
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/* Load the desired ASIC */
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if (load_asic_generic(chip, DSP_FNC_LOAD_LAYLA24_EXTERNAL_ASIC,
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asic) < 0) {
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memcpy(chip->comm_page->monitors, monitors,
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MONITOR_ARRAY_SIZE);
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kfree(monitors);
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return -EIO;
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}
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chip->asic_code = asic;
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memcpy(chip->comm_page->monitors, monitors, MONITOR_ARRAY_SIZE);
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kfree(monitors);
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}
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return 0;
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}
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static int dsp_set_digital_mode(struct echoaudio *chip, u8 mode)
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{
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u32 control_reg;
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int err, incompatible_clock;
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short asic;
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/* Set clock to "internal" if it's not compatible with the new mode */
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incompatible_clock = FALSE;
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switch (mode) {
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case DIGITAL_MODE_SPDIF_OPTICAL:
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case DIGITAL_MODE_SPDIF_RCA:
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if (chip->input_clock == ECHO_CLOCK_ADAT)
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incompatible_clock = TRUE;
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asic = FW_LAYLA24_2S_ASIC;
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break;
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case DIGITAL_MODE_ADAT:
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if (chip->input_clock == ECHO_CLOCK_SPDIF)
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incompatible_clock = TRUE;
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asic = FW_LAYLA24_2A_ASIC;
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break;
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default:
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DE_ACT(("Digital mode not supported: %d\n", mode));
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return -EINVAL;
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}
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if (incompatible_clock) { /* Switch to 48KHz, internal */
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chip->sample_rate = 48000;
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spin_lock_irq(&chip->lock);
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set_input_clock(chip, ECHO_CLOCK_INTERNAL);
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spin_unlock_irq(&chip->lock);
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}
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/* switch_asic() can sleep */
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if (switch_asic(chip, asic) < 0)
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return -EIO;
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spin_lock_irq(&chip->lock);
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/* Tweak the control register */
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control_reg = le32_to_cpu(chip->comm_page->control_register);
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control_reg &= GML_DIGITAL_MODE_CLEAR_MASK;
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switch (mode) {
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case DIGITAL_MODE_SPDIF_OPTICAL:
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control_reg |= GML_SPDIF_OPTICAL_MODE;
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break;
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case DIGITAL_MODE_SPDIF_RCA:
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/* GML_SPDIF_OPTICAL_MODE bit cleared */
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break;
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case DIGITAL_MODE_ADAT:
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control_reg |= GML_ADAT_MODE;
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control_reg &= ~GML_DOUBLE_SPEED_MODE;
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break;
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}
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err = write_control_reg(chip, control_reg, TRUE);
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spin_unlock_irq(&chip->lock);
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if (err < 0)
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return err;
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chip->digital_mode = mode;
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DE_ACT(("set_digital_mode to %d\n", mode));
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return incompatible_clock;
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}
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