/************************************************************************ This file is part of Echo Digital Audio's generic driver library. Copyright Echo Digital Audio Corporation (c) 1998 - 2005 All rights reserved www.echoaudio.com This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; 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_sample_rate(struct echoaudio *chip, u32 rate) { u32 clock, control_reg, old_control_reg; if (wait_handshake(chip)) return -EIO; old_control_reg = le32_to_cpu(chip->comm_page->control_register); control_reg = old_control_reg & ~INDIGO_EXPRESS_CLOCK_MASK; switch (rate) { case 32000: clock = INDIGO_EXPRESS_32000; break; case 44100: clock = INDIGO_EXPRESS_44100; break; case 48000: clock = INDIGO_EXPRESS_48000; break; case 64000: clock = INDIGO_EXPRESS_32000|INDIGO_EXPRESS_DOUBLE_SPEED; break; case 88200: clock = INDIGO_EXPRESS_44100|INDIGO_EXPRESS_DOUBLE_SPEED; break; case 96000: clock = INDIGO_EXPRESS_48000|INDIGO_EXPRESS_DOUBLE_SPEED; break; default: return -EINVAL; } control_reg |= clock; if (control_reg != old_control_reg) { dev_dbg(chip->card->dev, "set_sample_rate: %d clock %d\n", rate, clock); 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); } static u32 detect_input_clocks(const struct echoaudio *chip) { return ECHO_CLOCK_BIT_INTERNAL; } /* The IndigoIO has no ASIC. Just do nothing */ static int load_asic(struct echoaudio *chip) { return 0; }