diff options
Diffstat (limited to 'sound/pci/echoaudio/indigo_dsp.c')
| -rw-r--r-- | sound/pci/echoaudio/indigo_dsp.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/sound/pci/echoaudio/indigo_dsp.c b/sound/pci/echoaudio/indigo_dsp.c new file mode 100644 index 000000000..16eb082df --- /dev/null +++ b/sound/pci/echoaudio/indigo_dsp.c @@ -0,0 +1,167 @@ +/**************************************************************************** + + 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_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) != INDIGO)) + 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_INDIGO_DSP; + /* Since this card has no ASIC, mark it as loaded so everything + works OK */ + chip->asic_loaded = true; + chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL; + + 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) +{ + return ECHO_CLOCK_BIT_INTERNAL; +} + + + +/* The Indigo 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; + } + + /* 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; +} + + + +/* 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); +} + |