cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

indigoio_dsp.c (3434B)

      1/****************************************************************************
      2
      3   Copyright Echo Digital Audio Corporation (c) 1998 - 2004
      4   All rights reserved
      5   www.echoaudio.com
      6
      7   This file is part of Echo Digital Audio's generic driver library.
      8
      9   Echo Digital Audio's generic driver library is free software;
     10   you can redistribute it and/or modify it under the terms of
     11   the GNU General Public License as published by the Free Software
     12   Foundation.
     13
     14   This program is distributed in the hope that it will be useful,
     15   but WITHOUT ANY WARRANTY; without even the implied warranty of
     16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     17   GNU General Public License for more details.
     18
     19   You should have received a copy of the GNU General Public License
     20   along with this program; if not, write to the Free Software
     21   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
     22   MA  02111-1307, USA.
     23
     24   *************************************************************************
     25
     26 Translation from C++ and adaptation for use in ALSA-Driver
     27 were made by Giuliano Pochini <pochini@shiny.it>
     28
     29****************************************************************************/
     30
     31
     32static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
     33			   int gain);
     34static int update_vmixer_level(struct echoaudio *chip);
     35
     36
     37static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
     38{
     39	int err;
     40
     41	if (snd_BUG_ON((subdevice_id & 0xfff0) != INDIGO_IO))
     42		return -ENODEV;
     43
     44	err = init_dsp_comm_page(chip);
     45	if (err) {
     46		dev_err(chip->card->dev,
     47			"init_hw - could not initialize DSP comm page\n");
     48		return err;
     49	}
     50
     51	chip->device_id = device_id;
     52	chip->subdevice_id = subdevice_id;
     53	chip->bad_board = true;
     54	chip->dsp_code_to_load = FW_INDIGO_IO_DSP;
     55	/* Since this card has no ASIC, mark it as loaded so everything
     56	   works OK */
     57	chip->asic_loaded = true;
     58	chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL;
     59
     60	err = load_firmware(chip);
     61	if (err < 0)
     62		return err;
     63	chip->bad_board = false;
     64
     65	return err;
     66}
     67
     68
     69
     70static int set_mixer_defaults(struct echoaudio *chip)
     71{
     72	return init_line_levels(chip);
     73}
     74
     75
     76
     77static u32 detect_input_clocks(const struct echoaudio *chip)
     78{
     79	return ECHO_CLOCK_BIT_INTERNAL;
     80}
     81
     82
     83
     84/* The IndigoIO has no ASIC. Just do nothing */
     85static int load_asic(struct echoaudio *chip)
     86{
     87	return 0;
     88}
     89
     90
     91
     92static int set_sample_rate(struct echoaudio *chip, u32 rate)
     93{
     94	if (wait_handshake(chip))
     95		return -EIO;
     96
     97	chip->sample_rate = rate;
     98	chip->comm_page->sample_rate = cpu_to_le32(rate);
     99	clear_handshake(chip);
    100	return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
    101}
    102
    103
    104
    105/* This function routes the sound from a virtual channel to a real output */
    106static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
    107			   int gain)
    108{
    109	int index;
    110
    111	if (snd_BUG_ON(pipe >= num_pipes_out(chip) ||
    112		       output >= num_busses_out(chip)))
    113		return -EINVAL;
    114
    115	if (wait_handshake(chip))
    116		return -EIO;
    117
    118	chip->vmixer_gain[output][pipe] = gain;
    119	index = output * num_pipes_out(chip) + pipe;
    120	chip->comm_page->vmixer[index] = gain;
    121
    122	dev_dbg(chip->card->dev,
    123		"set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain);
    124	return 0;
    125}
    126
    127
    128
    129/* Tell the DSP to read and update virtual mixer levels in comm page. */
    130static int update_vmixer_level(struct echoaudio *chip)
    131{
    132	if (wait_handshake(chip))
    133		return -EIO;
    134	clear_handshake(chip);
    135	return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
    136}
    137