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1/************************************************************************2 3This file is part of Echo Digital Audio's generic driver library.4Copyright Echo Digital Audio Corporation (c) 1998 - 20055All rights reserved6www.echoaudio.com7 8This library is free software; you can redistribute it and/or9modify it under the terms of the GNU Lesser General Public10License as published by the Free Software Foundation; either11version 2.1 of the License, or (at your option) any later version.12 13This library is distributed in the hope that it will be useful,14but WITHOUT ANY WARRANTY; without even the implied warranty of15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU16Lesser General Public License for more details.17 18You should have received a copy of the GNU Lesser General Public19License along with this library; if not, write to the Free Software20Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA21 22*************************************************************************23 24 Translation from C++ and adaptation for use in ALSA-Driver25 were made by Giuliano Pochini <pochini@shiny.it>26 27*************************************************************************/28 29static int set_sample_rate(struct echoaudio *chip, u32 rate)30{31 u32 clock, control_reg, old_control_reg;32 33 if (wait_handshake(chip))34 return -EIO;35 36 old_control_reg = le32_to_cpu(chip->comm_page->control_register);37 control_reg = old_control_reg & ~INDIGO_EXPRESS_CLOCK_MASK;38 39 switch (rate) {40 case 32000:41 clock = INDIGO_EXPRESS_32000;42 break;43 case 44100:44 clock = INDIGO_EXPRESS_44100;45 break;46 case 48000:47 clock = INDIGO_EXPRESS_48000;48 break;49 case 64000:50 clock = INDIGO_EXPRESS_32000|INDIGO_EXPRESS_DOUBLE_SPEED;51 break;52 case 88200:53 clock = INDIGO_EXPRESS_44100|INDIGO_EXPRESS_DOUBLE_SPEED;54 break;55 case 96000:56 clock = INDIGO_EXPRESS_48000|INDIGO_EXPRESS_DOUBLE_SPEED;57 break;58 default:59 return -EINVAL;60 }61 62 control_reg |= clock;63 if (control_reg != old_control_reg) {64 dev_dbg(chip->card->dev,65 "set_sample_rate: %d clock %d\n", rate, clock);66 chip->comm_page->control_register = cpu_to_le32(control_reg);67 chip->sample_rate = rate;68 clear_handshake(chip);69 return send_vector(chip, DSP_VC_UPDATE_CLOCKS);70 }71 return 0;72}73 74 75 76/* This function routes the sound from a virtual channel to a real output */77static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,78 int gain)79{80 int index;81 82 if (snd_BUG_ON(pipe >= num_pipes_out(chip) ||83 output >= num_busses_out(chip)))84 return -EINVAL;85 86 if (wait_handshake(chip))87 return -EIO;88 89 chip->vmixer_gain[output][pipe] = gain;90 index = output * num_pipes_out(chip) + pipe;91 chip->comm_page->vmixer[index] = gain;92 93 dev_dbg(chip->card->dev,94 "set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain);95 return 0;96}97 98 99 100/* Tell the DSP to read and update virtual mixer levels in comm page. */101static int update_vmixer_level(struct echoaudio *chip)102{103 if (wait_handshake(chip))104 return -EIO;105 clear_handshake(chip);106 return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);107}108 109 110 111static u32 detect_input_clocks(const struct echoaudio *chip)112{113 return ECHO_CLOCK_BIT_INTERNAL;114}115 116 117 118/* The IndigoIO has no ASIC. Just do nothing */119static int load_asic(struct echoaudio *chip)120{121 return 0;122}123