diff options
Diffstat (limited to '')
| -rw-r--r-- | sound/pci/echoaudio/mia_dsp.c | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/sound/pci/echoaudio/mia_dsp.c b/sound/pci/echoaudio/mia_dsp.c new file mode 100644 index 000000000..8a4dffc68 --- /dev/null +++ b/sound/pci/echoaudio/mia_dsp.c @@ -0,0 +1,227 @@ +/**************************************************************************** + + Copyright Echo Digital Audio Corporation (c) 1998 - 2004 + All rights reserved + www.echoaudio.com + + This file is part of Echo Digital Audio's generic driver library. + + Echo Digital Audio's generic driver library is free software; + you can redistribute it and/or modify it under the terms of + the GNU General Public License as published by the Free Software + Foundation. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, + MA 02111-1307, USA. + + ************************************************************************* + + Translation from C++ and adaptation for use in ALSA-Driver + were made by Giuliano Pochini <pochini@shiny.it> + +****************************************************************************/ + + +static int set_input_clock(struct echoaudio *chip, u16 clock); +static int set_professional_spdif(struct echoaudio *chip, char prof); +static int update_flags(struct echoaudio *chip); +static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe, + int gain); +static int update_vmixer_level(struct echoaudio *chip); + + +static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id) +{ + int err; + + if (snd_BUG_ON((subdevice_id & 0xfff0) != MIA)) + return -ENODEV; + + err = init_dsp_comm_page(chip); + if (err) { + dev_err(chip->card->dev, + "init_hw - could not initialize DSP comm page\n"); + return err; + } + + chip->device_id = device_id; + chip->subdevice_id = subdevice_id; + chip->bad_board = true; + chip->dsp_code_to_load = FW_MIA_DSP; + /* Since this card has no ASIC, mark it as loaded so everything + works OK */ + chip->asic_loaded = true; + if ((subdevice_id & 0x0000f) == MIA_MIDI_REV) + chip->has_midi = true; + chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL | + ECHO_CLOCK_BIT_SPDIF; + + err = load_firmware(chip); + if (err < 0) + return err; + chip->bad_board = false; + + return err; +} + + + +static int set_mixer_defaults(struct echoaudio *chip) +{ + return init_line_levels(chip); +} + + + +static u32 detect_input_clocks(const struct echoaudio *chip) +{ + u32 clocks_from_dsp, clock_bits; + + /* Map the DSP clock detect bits to the generic driver clock + detect bits */ + clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks); + + clock_bits = ECHO_CLOCK_BIT_INTERNAL; + + if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF) + clock_bits |= ECHO_CLOCK_BIT_SPDIF; + + return clock_bits; +} + + + +/* The Mia has no ASIC. Just do nothing */ +static int load_asic(struct echoaudio *chip) +{ + return 0; +} + + + +static int set_sample_rate(struct echoaudio *chip, u32 rate) +{ + u32 control_reg; + + switch (rate) { + case 96000: + control_reg = MIA_96000; + break; + case 88200: + control_reg = MIA_88200; + break; + case 48000: + control_reg = MIA_48000; + break; + case 44100: + control_reg = MIA_44100; + break; + case 32000: + control_reg = MIA_32000; + break; + default: + dev_err(chip->card->dev, + "set_sample_rate: %d invalid!\n", rate); + return -EINVAL; + } + + /* Override the clock setting if this Mia is set to S/PDIF clock */ + if (chip->input_clock == ECHO_CLOCK_SPDIF) + control_reg |= MIA_SPDIF; + + /* Set the control register if it has changed */ + if (control_reg != le32_to_cpu(chip->comm_page->control_register)) { + if (wait_handshake(chip)) + return -EIO; + + chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP */ + chip->comm_page->control_register = cpu_to_le32(control_reg); + chip->sample_rate = rate; + + clear_handshake(chip); + return send_vector(chip, DSP_VC_UPDATE_CLOCKS); + } + return 0; +} + + + +static int set_input_clock(struct echoaudio *chip, u16 clock) +{ + dev_dbg(chip->card->dev, "set_input_clock(%d)\n", clock); + if (snd_BUG_ON(clock != ECHO_CLOCK_INTERNAL && + clock != ECHO_CLOCK_SPDIF)) + return -EINVAL; + + chip->input_clock = clock; + return set_sample_rate(chip, chip->sample_rate); +} + + + +/* This function routes the sound from a virtual channel to a real output */ +static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe, + int gain) +{ + int index; + + if (snd_BUG_ON(pipe >= num_pipes_out(chip) || + output >= num_busses_out(chip))) + return -EINVAL; + + if (wait_handshake(chip)) + return -EIO; + + chip->vmixer_gain[output][pipe] = gain; + index = output * num_pipes_out(chip) + pipe; + chip->comm_page->vmixer[index] = gain; + + dev_dbg(chip->card->dev, + "set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain); + return 0; +} + + + +/* Tell the DSP to read and update virtual mixer levels in comm page. */ +static int update_vmixer_level(struct echoaudio *chip) +{ + if (wait_handshake(chip)) + return -EIO; + clear_handshake(chip); + return send_vector(chip, DSP_VC_SET_VMIXER_GAIN); +} + + + +/* Tell the DSP to reread the flags from the comm page */ +static int update_flags(struct echoaudio *chip) +{ + if (wait_handshake(chip)) + return -EIO; + clear_handshake(chip); + return send_vector(chip, DSP_VC_UPDATE_FLAGS); +} + + + +static int set_professional_spdif(struct echoaudio *chip, char prof) +{ + dev_dbg(chip->card->dev, "set_professional_spdif %d\n", prof); + if (prof) + chip->comm_page->flags |= + cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF); + else + chip->comm_page->flags &= + ~cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF); + chip->professional_spdif = prof; + return update_flags(chip); +} + |