// SPDX-License-Identifier: GPL-2.0-only
/*
* ALSA driver for Echoaudio soundcards .
* Copyright ( C ) 2003 - 2004 Giuliano Pochini < pochini @ shiny . it >
* Copyright ( C ) 2020 Mark Hills < mark @ xwax . org >
*/
#include <linux/module.h>
#include <linux/string.h>
MODULE_AUTHOR("Giuliano Pochini <pochini@shiny.it>" );
MODULE_LICENSE("GPL v2" );
MODULE_DESCRIPTION("Echoaudio " ECHOCARD_NAME " soundcards driver" );
MODULE_DEVICE_TABLE(pci, snd_echo_ids);
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
module_param_array(index, int , NULL, 0444 );
MODULE_PARM_DESC(index, "Index value for " ECHOCARD_NAME " soundcard." );
module_param_array(id, charp, NULL, 0444 );
MODULE_PARM_DESC(id, "ID string for " ECHOCARD_NAME " soundcard." );
module_param_array(enable, bool , NULL, 0444 );
MODULE_PARM_DESC(enable, "Enable " ECHOCARD_NAME " soundcard." );
static const unsigned int channels_list[10 ] = {1 , 2 , 4 , 6 , 8 , 10 , 12 , 14 , 16 , 999999 };
static const DECLARE_TLV_DB_SCALE(db_scale_output_gain, -12800 , 100 , 1 );
static int get_firmware(const struct firmware **fw_entry,
struct echoaudio *chip, const short fw_index)
{
int err;
char name[30 ];
if (chip->fw_cache[fw_index]) {
dev_dbg(chip->card->dev,
"firmware requested: %s is cached\n" ,
card_fw[fw_index].data);
*fw_entry = chip->fw_cache[fw_index];
return 0 ;
}
dev_dbg(chip->card->dev,
"firmware requested: %s\n" , card_fw[fw_index].data);
snprintf(name, sizeof (name), "ea/%s" , card_fw[fw_index].data);
err = request_firmware(fw_entry, name, &chip->pci->dev);
if (err < 0 )
dev_err(chip->card->dev,
"get_firmware(): Firmware not available (%d)\n" , err);
else
chip->fw_cache[fw_index] = *fw_entry;
return err;
}
static void free_firmware(const struct firmware *fw_entry,
struct echoaudio *chip)
{
dev_dbg(chip->card->dev, "firmware not released (kept in cache)\n" );
}
static void free_firmware_cache(struct echoaudio *chip)
{
int i;
for (i = 0 ; i < 8 ; i++)
if (chip->fw_cache[i]) {
release_firmware(chip->fw_cache[i]);
dev_dbg(chip->card->dev, "release_firmware(%d)\n" , i);
}
}
/******************************************************************************
PCM interface
******************************************************************************/
static void audiopipe_free(struct snd_pcm_runtime *runtime)
{
struct audiopipe *pipe = runtime->private_data;
if (pipe->sgpage.area)
snd_dma_free_pages(&pipe->sgpage);
kfree(pipe);
}
static int hw_rule_capture_format_by_channels(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule)
{
struct snd_interval *c = hw_param_interval(params,
SNDRV_PCM_HW_PARAM_CHANNELS);
struct snd_mask *f = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
struct snd_mask fmt;
snd_mask_any(&fmt);
#ifndef ECHOCARD_HAS_STEREO_BIG_ENDIAN32
/* >=2 channels cannot be S32_BE */
if (c->min == 2 ) {
fmt.bits[0 ] &= ~SNDRV_PCM_FMTBIT_S32_BE;
return snd_mask_refine(f, &fmt);
}
#endif
/* > 2 channels cannot be U8 and S32_BE */
if (c->min > 2 ) {
fmt.bits[0 ] &= ~(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_BE);
return snd_mask_refine(f, &fmt);
}
/* Mono is ok with any format */
return 0 ;
}
static int hw_rule_capture_channels_by_format(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule)
{
struct snd_interval *c = hw_param_interval(params,
SNDRV_PCM_HW_PARAM_CHANNELS);
struct snd_mask *f = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
struct snd_interval ch;
snd_interval_any(&ch);
/* S32_BE is mono (and stereo) only */
if (f->bits[0 ] == SNDRV_PCM_FMTBIT_S32_BE) {
ch.min = 1 ;
#ifdef ECHOCARD_HAS_STEREO_BIG_ENDIAN32
ch.max = 2 ;
#else
ch.max = 1 ;
#endif
ch.integer = 1 ;
return snd_interval_refine(c, &ch);
}
/* U8 can be only mono or stereo */
if (f->bits[0 ] == SNDRV_PCM_FMTBIT_U8) {
ch.min = 1 ;
ch.max = 2 ;
ch.integer = 1 ;
return snd_interval_refine(c, &ch);
}
/* S16_LE, S24_3LE and S32_LE support any number of channels. */
return 0 ;
}
static int hw_rule_playback_format_by_channels(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule)
{
struct snd_interval *c = hw_param_interval(params,
SNDRV_PCM_HW_PARAM_CHANNELS);
struct snd_mask *f = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
struct snd_mask fmt;
u64 fmask;
snd_mask_any(&fmt);
fmask = fmt.bits[0 ] + ((u64)fmt.bits[1 ] << 32 );
/* >2 channels must be S16_LE, S24_3LE or S32_LE */
if (c->min > 2 ) {
fmask &= SNDRV_PCM_FMTBIT_S16_LE |
SNDRV_PCM_FMTBIT_S24_3LE |
SNDRV_PCM_FMTBIT_S32_LE;
/* 1 channel must be S32_BE or S32_LE */
} else if (c->max == 1 )
fmask &= SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE;
#ifndef ECHOCARD_HAS_STEREO_BIG_ENDIAN32
/* 2 channels cannot be S32_BE */
else if (c->min == 2 && c->max == 2 )
fmask &= ~SNDRV_PCM_FMTBIT_S32_BE;
#endif
else
return 0 ;
fmt.bits[0 ] &= (u32)fmask;
fmt.bits[1 ] &= (u32)(fmask >> 32 );
return snd_mask_refine(f, &fmt);
}
static int hw_rule_playback_channels_by_format(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule)
{
struct snd_interval *c = hw_param_interval(params,
SNDRV_PCM_HW_PARAM_CHANNELS);
struct snd_mask *f = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
struct snd_interval ch;
u64 fmask;
snd_interval_any(&ch);
ch.integer = 1 ;
fmask = f->bits[0 ] + ((u64)f->bits[1 ] << 32 );
/* S32_BE is mono (and stereo) only */
if (fmask == SNDRV_PCM_FMTBIT_S32_BE) {
ch.min = 1 ;
#ifdef ECHOCARD_HAS_STEREO_BIG_ENDIAN32
ch.max = 2 ;
#else
ch.max = 1 ;
#endif
/* U8 is stereo only */
} else if (fmask == SNDRV_PCM_FMTBIT_U8)
ch.min = ch.max = 2 ;
/* S16_LE and S24_3LE must be at least stereo */
else if (!(fmask & ~(SNDRV_PCM_FMTBIT_S16_LE |
SNDRV_PCM_FMTBIT_S24_3LE)))
ch.min = 2 ;
else
return 0 ;
return snd_interval_refine(c, &ch);
}
/* Since the sample rate is a global setting, do allow the user to change the
sample rate only if there is only one pcm device open. */
static int hw_rule_sample_rate(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule)
{
struct snd_interval *rate = hw_param_interval(params,
SNDRV_PCM_HW_PARAM_RATE);
struct echoaudio *chip = rule->private ;
struct snd_interval fixed;
int err;
mutex_lock(&chip->mode_mutex);
if (chip->can_set_rate) {
err = 0 ;
} else {
snd_interval_any(&fixed);
fixed.min = fixed.max = chip->sample_rate;
err = snd_interval_refine(rate, &fixed);
}
mutex_unlock(&chip->mode_mutex);
return err;
}
static int pcm_open(struct snd_pcm_substream *substream,
signed char max_channels)
{
struct echoaudio *chip;
struct snd_pcm_runtime *runtime;
struct audiopipe *pipe;
int err, i;
if (max_channels <= 0 )
return -EAGAIN;
chip = snd_pcm_substream_chip(substream);
runtime = substream->runtime;
pipe = kzalloc(sizeof (struct audiopipe), GFP_KERNEL);
if (!pipe)
return -ENOMEM;
pipe->index = -1 ; /* Not configured yet */
/* Set up hw capabilities and contraints */
memcpy(&pipe->hw, &pcm_hardware_skel, sizeof (struct snd_pcm_hardware));
dev_dbg(chip->card->dev, "max_channels=%d\n" , max_channels);
pipe->constr.list = channels_list;
pipe->constr.mask = 0 ;
for (i = 0 ; channels_list[i] <= max_channels; i++);
pipe->constr.count = i;
if (pipe->hw.channels_max > max_channels)
pipe->hw.channels_max = max_channels;
if (chip->digital_mode == DIGITAL_MODE_ADAT) {
pipe->hw.rate_max = 48000 ;
pipe->hw.rates &= SNDRV_PCM_RATE_8000_48000;
}
runtime->hw = pipe->hw;
runtime->private_data = pipe;
runtime->private_free = audiopipe_free;
snd_pcm_set_sync(substream);
/* Only mono and any even number of channels are allowed */
err = snd_pcm_hw_constraint_list(runtime, 0 ,
SNDRV_PCM_HW_PARAM_CHANNELS,
&pipe->constr);
if (err < 0 )
return err;
/* All periods should have the same size */
err = snd_pcm_hw_constraint_integer(runtime,
SNDRV_PCM_HW_PARAM_PERIODS);
if (err < 0 )
return err;
/* The hw accesses memory in chunks 32 frames long and they should be
32 - bytes - aligned . It ' s not a requirement , but it seems that IRQs are
generated with a resolution of 32 frames. Thus we need the following */
err = snd_pcm_hw_constraint_step(runtime, 0 ,
SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 32 );
if (err < 0 )
return err;
err = snd_pcm_hw_constraint_step(runtime, 0 ,
SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 32 );
if (err < 0 )
return err;
err = snd_pcm_hw_rule_add(substream->runtime, 0 ,
SNDRV_PCM_HW_PARAM_RATE,
hw_rule_sample_rate, chip,
SNDRV_PCM_HW_PARAM_RATE, -1 );
if (err < 0 )
return err;
/* Allocate a page for the scatter-gather list */
err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
&chip->pci->dev,
PAGE_SIZE, &pipe->sgpage);
if (err < 0 ) {
dev_err(chip->card->dev, "s-g list allocation failed\n" );
return err;
}
/*
* Sole ownership required to set the rate
*/
dev_dbg(chip->card->dev, "pcm_open opencount=%d can_set_rate=%d, rate_set=%d" ,
chip->opencount, chip->can_set_rate, chip->rate_set);
chip->opencount++;
if (chip->opencount > 1 && chip->rate_set)
chip->can_set_rate = 0 ;
return 0 ;
}
static int pcm_analog_in_open(struct snd_pcm_substream *substream)
{
struct echoaudio *chip = snd_pcm_substream_chip(substream);
int err;
err = pcm_open(substream,
num_analog_busses_in(chip) - substream->number);
if (err < 0 )
return err;
err = snd_pcm_hw_rule_add(substream->runtime, 0 ,
SNDRV_PCM_HW_PARAM_CHANNELS,
hw_rule_capture_channels_by_format, NULL,
SNDRV_PCM_HW_PARAM_FORMAT, -1 );
if (err < 0 )
return err;
err = snd_pcm_hw_rule_add(substream->runtime, 0 ,
SNDRV_PCM_HW_PARAM_FORMAT,
hw_rule_capture_format_by_channels, NULL,
SNDRV_PCM_HW_PARAM_CHANNELS, -1 );
if (err < 0 )
return err;
return 0 ;
}
static int pcm_analog_out_open(struct snd_pcm_substream *substream)
{
struct echoaudio *chip = snd_pcm_substream_chip(substream);
int max_channels, err;
#ifdef ECHOCARD_HAS_VMIXER
max_channels = num_pipes_out(chip);
#else
max_channels = num_analog_busses_out(chip);
#endif
err = pcm_open(substream, max_channels - substream->number);
if (err < 0 )
return err;
err = snd_pcm_hw_rule_add(substream->runtime, 0 ,
SNDRV_PCM_HW_PARAM_CHANNELS,
hw_rule_playback_channels_by_format,
NULL,
SNDRV_PCM_HW_PARAM_FORMAT, -1 );
if (err < 0 )
return err;
err = snd_pcm_hw_rule_add(substream->runtime, 0 ,
SNDRV_PCM_HW_PARAM_FORMAT,
hw_rule_playback_format_by_channels,
NULL,
SNDRV_PCM_HW_PARAM_CHANNELS, -1 );
if (err < 0 )
return err;
return 0 ;
}
#ifdef ECHOCARD_HAS_DIGITAL_IO
static int pcm_digital_in_open(struct snd_pcm_substream *substream)
{
struct echoaudio *chip = snd_pcm_substream_chip(substream);
int err, max_channels;
max_channels = num_digital_busses_in(chip) - substream->number;
mutex_lock(&chip->mode_mutex);
if (chip->digital_mode == DIGITAL_MODE_ADAT)
err = pcm_open(substream, max_channels);
else /* If the card has ADAT, subtract the 6 channels
* that S / PDIF doesn ' t have
*/
err = pcm_open(substream, max_channels - ECHOCARD_HAS_ADAT);
if (err < 0 )
goto din_exit;
err = snd_pcm_hw_rule_add(substream->runtime, 0 ,
SNDRV_PCM_HW_PARAM_CHANNELS,
hw_rule_capture_channels_by_format, NULL,
SNDRV_PCM_HW_PARAM_FORMAT, -1 );
if (err < 0 )
goto din_exit;
err = snd_pcm_hw_rule_add(substream->runtime, 0 ,
SNDRV_PCM_HW_PARAM_FORMAT,
hw_rule_capture_format_by_channels, NULL,
SNDRV_PCM_HW_PARAM_CHANNELS, -1 );
if (err < 0 )
goto din_exit;
din_exit:
mutex_unlock(&chip->mode_mutex);
return err;
}
#ifndef ECHOCARD_HAS_VMIXER /* See the note in snd_echo_new_pcm() */
static int pcm_digital_out_open(struct snd_pcm_substream *substream)
{
struct echoaudio *chip = snd_pcm_substream_chip(substream);
int err, max_channels;
max_channels = num_digital_busses_out(chip) - substream->number;
mutex_lock(&chip->mode_mutex);
if (chip->digital_mode == DIGITAL_MODE_ADAT)
err = pcm_open(substream, max_channels);
else /* If the card has ADAT, subtract the 6 channels
* that S / PDIF doesn ' t have
*/
err = pcm_open(substream, max_channels - ECHOCARD_HAS_ADAT);
if (err < 0 )
goto dout_exit;
err = snd_pcm_hw_rule_add(substream->runtime, 0 ,
SNDRV_PCM_HW_PARAM_CHANNELS,
hw_rule_playback_channels_by_format,
NULL, SNDRV_PCM_HW_PARAM_FORMAT,
-1 );
if (err < 0 )
goto dout_exit;
err = snd_pcm_hw_rule_add(substream->runtime, 0 ,
SNDRV_PCM_HW_PARAM_FORMAT,
hw_rule_playback_format_by_channels,
NULL, SNDRV_PCM_HW_PARAM_CHANNELS,
-1 );
if (err < 0 )
goto dout_exit;
dout_exit:
mutex_unlock(&chip->mode_mutex);
return err;
}
#endif /* !ECHOCARD_HAS_VMIXER */
#endif /* ECHOCARD_HAS_DIGITAL_IO */
static int pcm_close(struct snd_pcm_substream *substream)
{
struct echoaudio *chip = snd_pcm_substream_chip(substream);
/* Nothing to do here. Audio is already off and pipe will be
* freed by its callback
*/
mutex_lock(&chip->mode_mutex);
dev_dbg(chip->card->dev, "pcm_open opencount=%d can_set_rate=%d, rate_set=%d" ,
chip->opencount, chip->can_set_rate, chip->rate_set);
chip->opencount--;
switch (chip->opencount) {
case 1 :
chip->can_set_rate = 1 ;
break ;
case 0 :
chip->rate_set = 0 ;
break ;
}
mutex_unlock(&chip->mode_mutex);
return 0 ;
}
/* Channel allocation and scatter-gather list setup */
static int init_engine(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params,
int pipe_index, int interleave)
{
struct echoaudio *chip;
int err, per, rest, page, edge, offs;
struct audiopipe *pipe;
chip = snd_pcm_substream_chip(substream);
pipe = (struct audiopipe *) substream->runtime->private_data;
/* Sets up che hardware. If it's already initialized, reset and
* redo with the new parameters
*/
spin_lock_irq(&chip->lock);
if (pipe->index >= 0 ) {
dev_dbg(chip->card->dev, "hwp_ie free(%d)\n" , pipe->index);
err = free_pipes(chip, pipe);
snd_BUG_ON(err);
chip->substream[pipe->index] = NULL;
}
err = allocate_pipes(chip, pipe, pipe_index, interleave);
if (err < 0 ) {
spin_unlock_irq(&chip->lock);
dev_err(chip->card->dev, "allocate_pipes(%d) err=%d\n" ,
pipe_index, err);
return err;
}
spin_unlock_irq(&chip->lock);
dev_dbg(chip->card->dev, "allocate_pipes()=%d\n" , pipe_index);
dev_dbg(chip->card->dev,
"pcm_hw_params (bufsize=%dB periods=%d persize=%dB)\n" ,
params_buffer_bytes(hw_params), params_periods(hw_params),
params_period_bytes(hw_params));
sglist_init(chip, pipe);
edge = PAGE_SIZE;
for (offs = page = per = 0 ; offs < params_buffer_bytes(hw_params);
per++) {
rest = params_period_bytes(hw_params);
if (offs + rest > params_buffer_bytes(hw_params))
rest = params_buffer_bytes(hw_params) - offs;
while (rest) {
dma_addr_t addr;
addr = snd_pcm_sgbuf_get_addr(substream, offs);
if (rest <= edge - offs) {
sglist_add_mapping(chip, pipe, addr, rest);
sglist_add_irq(chip, pipe);
offs += rest;
rest = 0 ;
} else {
sglist_add_mapping(chip, pipe, addr,
edge - offs);
rest -= edge - offs;
offs = edge;
}
if (offs == edge) {
edge += PAGE_SIZE;
page++;
}
}
}
/* Close the ring buffer */
sglist_wrap(chip, pipe);
/* This stuff is used by the irq handler, so it must be
* initialized before chip - > substream
*/
pipe->last_period = 0 ;
pipe->last_counter = 0 ;
pipe->position = 0 ;
smp_wmb();
chip->substream[pipe_index] = substream;
chip->rate_set = 1 ;
spin_lock_irq(&chip->lock);
set_sample_rate(chip, hw_params->rate_num / hw_params->rate_den);
spin_unlock_irq(&chip->lock);
return 0 ;
}
static int pcm_analog_in_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct echoaudio *chip = snd_pcm_substream_chip(substream);
return init_engine(substream, hw_params, px_analog_in(chip) +
substream->number, params_channels(hw_params));
}
static int pcm_analog_out_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
return init_engine(substream, hw_params, substream->number,
params_channels(hw_params));
}
#ifdef ECHOCARD_HAS_DIGITAL_IO
static int pcm_digital_in_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct echoaudio *chip = snd_pcm_substream_chip(substream);
return init_engine(substream, hw_params, px_digital_in(chip) +
substream->number, params_channels(hw_params));
}
#ifndef ECHOCARD_HAS_VMIXER /* See the note in snd_echo_new_pcm() */
static int pcm_digital_out_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct echoaudio *chip = snd_pcm_substream_chip(substream);
return init_engine(substream, hw_params, px_digital_out(chip) +
substream->number, params_channels(hw_params));
}
#endif /* !ECHOCARD_HAS_VMIXER */
#endif /* ECHOCARD_HAS_DIGITAL_IO */
static int pcm_hw_free(struct snd_pcm_substream *substream)
{
struct echoaudio *chip;
struct audiopipe *pipe;
chip = snd_pcm_substream_chip(substream);
pipe = (struct audiopipe *) substream->runtime->private_data;
spin_lock_irq(&chip->lock);
if (pipe->index >= 0 ) {
dev_dbg(chip->card->dev, "pcm_hw_free(%d)\n" , pipe->index);
free_pipes(chip, pipe);
chip->substream[pipe->index] = NULL;
pipe->index = -1 ;
}
spin_unlock_irq(&chip->lock);
return 0 ;
}
static int pcm_prepare(struct snd_pcm_substream *substream)
{
struct echoaudio *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
struct audioformat format;
int pipe_index = ((struct audiopipe *)runtime->private_data)->index;
dev_dbg(chip->card->dev, "Prepare rate=%d format=%d channels=%d\n" ,
runtime->rate, runtime->format, runtime->channels);
format.interleave = runtime->channels;
format.data_are_bigendian = 0 ;
format.mono_to_stereo = 0 ;
switch (runtime->format) {
case SNDRV_PCM_FORMAT_U8:
format.bits_per_sample = 8 ;
break ;
case SNDRV_PCM_FORMAT_S16_LE:
format.bits_per_sample = 16 ;
break ;
case SNDRV_PCM_FORMAT_S24_3LE:
format.bits_per_sample = 24 ;
break ;
case SNDRV_PCM_FORMAT_S32_BE:
format.data_are_bigendian = 1 ;
fallthrough;
case SNDRV_PCM_FORMAT_S32_LE:
format.bits_per_sample = 32 ;
break ;
default :
dev_err(chip->card->dev,
"Prepare error: unsupported format %d\n" ,
runtime->format);
return -EINVAL;
}
if (snd_BUG_ON(pipe_index >= px_num(chip)))
return -EINVAL;
/*
* We passed checks we can do independently ; now take
* exclusive control
*/
spin_lock_irq(&chip->lock);
if (snd_BUG_ON(!is_pipe_allocated(chip, pipe_index))) {
spin_unlock_irq(&chip->lock);
return -EINVAL;
}
set_audio_format(chip, pipe_index, &format);
spin_unlock_irq(&chip->lock);
return 0 ;
}
static int pcm_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct echoaudio *chip = snd_pcm_substream_chip(substream);
struct audiopipe *pipe;
int i, err;
u32 channelmask = 0 ;
struct snd_pcm_substream *s;
snd_pcm_group_for_each_entry(s, substream) {
for (i = 0 ; i < DSP_MAXPIPES; i++) {
if (s == chip->substream[i]) {
channelmask |= 1 << i;
snd_pcm_trigger_done(s, substream);
}
}
}
spin_lock(&chip->lock);
switch (cmd) {
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
for (i = 0 ; i < DSP_MAXPIPES; i++) {
if (channelmask & (1 << i)) {
pipe = chip->substream[i]->runtime->private_data;
switch (pipe->state) {
case PIPE_STATE_STOPPED:
pipe->last_period = 0 ;
pipe->last_counter = 0 ;
pipe->position = 0 ;
*pipe->dma_counter = 0 ;
fallthrough;
case PIPE_STATE_PAUSED:
pipe->state = PIPE_STATE_STARTED;
break ;
case PIPE_STATE_STARTED:
break ;
}
}
}
err = start_transport(chip, channelmask,
chip->pipe_cyclic_mask);
break ;
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_STOP:
for (i = 0 ; i < DSP_MAXPIPES; i++) {
if (channelmask & (1 << i)) {
pipe = chip->substream[i]->runtime->private_data;
pipe->state = PIPE_STATE_STOPPED;
}
}
err = stop_transport(chip, channelmask);
break ;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
for (i = 0 ; i < DSP_MAXPIPES; i++) {
if (channelmask & (1 << i)) {
pipe = chip->substream[i]->runtime->private_data;
pipe->state = PIPE_STATE_PAUSED;
}
}
err = pause_transport(chip, channelmask);
break ;
default :
err = -EINVAL;
}
spin_unlock(&chip->lock);
return err;
}
static snd_pcm_uframes_t pcm_pointer(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct audiopipe *pipe = runtime->private_data;
u32 counter, step;
/*
* IRQ handling runs concurrently . Do not share tracking of
* counter with it , which would race or require locking
*/
counter = le32_to_cpu(*pipe->dma_counter); /* presumed atomic */
step = counter - pipe->last_counter; /* handles wrapping */
pipe->last_counter = counter;
/* counter doesn't neccessarily wrap on a multiple of
* buffer_size , so can ' t derive the position ; must
* accumulate */
pipe->position += step;
pipe->position %= frames_to_bytes(runtime, runtime->buffer_size); /* wrap */
return bytes_to_frames(runtime, pipe->position);
}
/* pcm *_ops structures */
static const struct snd_pcm_ops analog_playback_ops = {
.open = pcm_analog_out_open,
.close = pcm_close,
.hw_params = pcm_analog_out_hw_params,
.hw_free = pcm_hw_free,
.prepare = pcm_prepare,
.trigger = pcm_trigger,
.pointer = pcm_pointer,
};
static const struct snd_pcm_ops analog_capture_ops = {
.open = pcm_analog_in_open,
.close = pcm_close,
.hw_params = pcm_analog_in_hw_params,
.hw_free = pcm_hw_free,
.prepare = pcm_prepare,
.trigger = pcm_trigger,
.pointer = pcm_pointer,
};
#ifdef ECHOCARD_HAS_DIGITAL_IO
#ifndef ECHOCARD_HAS_VMIXER
static const struct snd_pcm_ops digital_playback_ops = {
.open = pcm_digital_out_open,
.close = pcm_close,
.hw_params = pcm_digital_out_hw_params,
.hw_free = pcm_hw_free,
.prepare = pcm_prepare,
.trigger = pcm_trigger,
.pointer = pcm_pointer,
};
#endif /* !ECHOCARD_HAS_VMIXER */
static const struct snd_pcm_ops digital_capture_ops = {
.open = pcm_digital_in_open,
.close = pcm_close,
.hw_params = pcm_digital_in_hw_params,
.hw_free = pcm_hw_free,
.prepare = pcm_prepare,
.trigger = pcm_trigger,
.pointer = pcm_pointer,
};
#endif /* ECHOCARD_HAS_DIGITAL_IO */
/* Preallocate memory only for the first substream because it's the most
* used one
*/
static void snd_echo_preallocate_pages(struct snd_pcm *pcm, struct device *dev)
{
struct snd_pcm_substream *ss;
int stream;
for (stream = 0 ; stream < 2 ; stream++)
for (ss = pcm->streams[stream].substream; ss; ss = ss->next)
snd_pcm_set_managed_buffer(ss, SNDRV_DMA_TYPE_DEV_SG,
dev,
ss->number ? 0 : 128 <<10 ,
256 <<10 );
}
/*<--snd_echo_probe() */
static int snd_echo_new_pcm(struct echoaudio *chip)
{
struct snd_pcm *pcm;
int err;
#ifdef ECHOCARD_HAS_VMIXER
/* This card has a Vmixer, that is there is no direct mapping from PCM
streams to physical outputs . The user can mix the streams as he wishes
via control interface and it ' s possible to send any stream to any
output , thus it makes no sense to keep analog and digital outputs
separated */
/* PCM#0 Virtual outputs and analog inputs */
err = snd_pcm_new(chip->card, "PCM" , 0 , num_pipes_out(chip),
num_analog_busses_in(chip), &pcm);
if (err < 0 )
return err;
pcm->private_data = chip;
chip->analog_pcm = pcm;
strscpy(pcm->name, chip->card->shortname);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &analog_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &analog_capture_ops);
snd_echo_preallocate_pages(pcm, &chip->pci->dev);
#ifdef ECHOCARD_HAS_DIGITAL_IO
/* PCM#1 Digital inputs, no outputs */
err = snd_pcm_new(chip->card, "Digital PCM" , 1 , 0 ,
num_digital_busses_in(chip), &pcm);
if (err < 0 )
return err;
pcm->private_data = chip;
chip->digital_pcm = pcm;
strscpy(pcm->name, chip->card->shortname);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &digital_capture_ops);
snd_echo_preallocate_pages(pcm, &chip->pci->dev);
#endif /* ECHOCARD_HAS_DIGITAL_IO */
#else /* ECHOCARD_HAS_VMIXER */
/* The card can manage substreams formed by analog and digital channels
at the same time , but I prefer to keep analog and digital channels
separated , because that mixed thing is confusing and useless . So we
register two PCM devices: */
/* PCM#0 Analog i/o */
err = snd_pcm_new(chip->card, "Analog PCM" , 0 ,
num_analog_busses_out(chip),
num_analog_busses_in(chip), &pcm);
if (err < 0 )
return err;
pcm->private_data = chip;
chip->analog_pcm = pcm;
strscpy(pcm->name, chip->card->shortname);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &analog_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &analog_capture_ops);
snd_echo_preallocate_pages(pcm, &chip->pci->dev);
#ifdef ECHOCARD_HAS_DIGITAL_IO
/* PCM#1 Digital i/o */
err = snd_pcm_new(chip->card, "Digital PCM" , 1 ,
num_digital_busses_out(chip),
num_digital_busses_in(chip), &pcm);
if (err < 0 )
return err;
pcm->private_data = chip;
chip->digital_pcm = pcm;
strscpy(pcm->name, chip->card->shortname);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &digital_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &digital_capture_ops);
snd_echo_preallocate_pages(pcm, &chip->pci->dev);
#endif /* ECHOCARD_HAS_DIGITAL_IO */
#endif /* ECHOCARD_HAS_VMIXER */
return 0 ;
}
/******************************************************************************
Control interface
******************************************************************************/
#if !defined (ECHOCARD_HAS_VMIXER) || defined (ECHOCARD_HAS_LINE_OUT_GAIN)
/******************* PCM output volume *******************/
static int snd_echo_output_gain_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
struct echoaudio *chip;
chip = snd_kcontrol_chip(kcontrol);
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = num_busses_out(chip);
uinfo->value.integer.min = ECHOGAIN_MINOUT;
uinfo->value.integer.max = ECHOGAIN_MAXOUT;
return 0 ;
}
static int snd_echo_output_gain_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip;
int c;
chip = snd_kcontrol_chip(kcontrol);
for (c = 0 ; c < num_busses_out(chip); c++)
ucontrol->value.integer.value[c] = chip->output_gain[c];
return 0 ;
}
static int snd_echo_output_gain_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip;
int c, changed, gain;
changed = 0 ;
chip = snd_kcontrol_chip(kcontrol);
spin_lock_irq(&chip->lock);
for (c = 0 ; c < num_busses_out(chip); c++) {
gain = ucontrol->value.integer.value[c];
/* Ignore out of range values */
if (gain < ECHOGAIN_MINOUT || gain > ECHOGAIN_MAXOUT)
continue ;
if (chip->output_gain[c] != gain) {
set_output_gain(chip, c, gain);
changed = 1 ;
}
}
if (changed)
update_output_line_level(chip);
spin_unlock_irq(&chip->lock);
return changed;
}
#ifdef ECHOCARD_HAS_LINE_OUT_GAIN
/* On the Mia this one controls the line-out volume */
static const struct snd_kcontrol_new snd_echo_line_output_gain = {
.name = "Line Playback Volume" ,
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
SNDRV_CTL_ELEM_ACCESS_TLV_READ,
.info = snd_echo_output_gain_info,
.get = snd_echo_output_gain_get,
.put = snd_echo_output_gain_put,
.tlv = {.p = db_scale_output_gain},
};
#else
static const struct snd_kcontrol_new snd_echo_pcm_output_gain = {
.name = "PCM Playback Volume" ,
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,
.info = snd_echo_output_gain_info,
.get = snd_echo_output_gain_get,
.put = snd_echo_output_gain_put,
.tlv = {.p = db_scale_output_gain},
};
#endif
#endif /* !ECHOCARD_HAS_VMIXER || ECHOCARD_HAS_LINE_OUT_GAIN */
#ifdef ECHOCARD_HAS_INPUT_GAIN
/******************* Analog input volume *******************/
static int snd_echo_input_gain_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
struct echoaudio *chip;
chip = snd_kcontrol_chip(kcontrol);
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = num_analog_busses_in(chip);
uinfo->value.integer.min = ECHOGAIN_MININP;
uinfo->value.integer.max = ECHOGAIN_MAXINP;
return 0 ;
}
static int snd_echo_input_gain_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip;
int c;
chip = snd_kcontrol_chip(kcontrol);
for (c = 0 ; c < num_analog_busses_in(chip); c++)
ucontrol->value.integer.value[c] = chip->input_gain[c];
return 0 ;
}
static int snd_echo_input_gain_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip;
int c, gain, changed;
changed = 0 ;
chip = snd_kcontrol_chip(kcontrol);
spin_lock_irq(&chip->lock);
for (c = 0 ; c < num_analog_busses_in(chip); c++) {
gain = ucontrol->value.integer.value[c];
/* Ignore out of range values */
if (gain < ECHOGAIN_MININP || gain > ECHOGAIN_MAXINP)
continue ;
if (chip->input_gain[c] != gain) {
set_input_gain(chip, c, gain);
changed = 1 ;
}
}
if (changed)
update_input_line_level(chip);
spin_unlock_irq(&chip->lock);
return changed;
}
static const DECLARE_TLV_DB_SCALE(db_scale_input_gain, -2500 , 50 , 0 );
static const struct snd_kcontrol_new snd_echo_line_input_gain = {
.name = "Line Capture Volume" ,
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,
.info = snd_echo_input_gain_info,
.get = snd_echo_input_gain_get,
.put = snd_echo_input_gain_put,
.tlv = {.p = db_scale_input_gain},
};
#endif /* ECHOCARD_HAS_INPUT_GAIN */
#ifdef ECHOCARD_HAS_OUTPUT_NOMINAL_LEVEL
/************ Analog output nominal level (+4dBu / -10dBV) ***************/
static int snd_echo_output_nominal_info (struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
struct echoaudio *chip;
chip = snd_kcontrol_chip(kcontrol);
uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
uinfo->count = num_analog_busses_out(chip);
uinfo->value.integer.min = 0 ;
uinfo->value.integer.max = 1 ;
return 0 ;
}
static int snd_echo_output_nominal_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip;
int c;
chip = snd_kcontrol_chip(kcontrol);
for (c = 0 ; c < num_analog_busses_out(chip); c++)
ucontrol->value.integer.value[c] = chip->nominal_level[c];
return 0 ;
}
static int snd_echo_output_nominal_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip;
int c, changed;
changed = 0 ;
chip = snd_kcontrol_chip(kcontrol);
spin_lock_irq(&chip->lock);
for (c = 0 ; c < num_analog_busses_out(chip); c++) {
if (chip->nominal_level[c] != ucontrol->value.integer.value[c]) {
set_nominal_level(chip, c,
ucontrol->value.integer.value[c]);
changed = 1 ;
}
}
if (changed)
update_output_line_level(chip);
spin_unlock_irq(&chip->lock);
return changed;
}
static const struct snd_kcontrol_new snd_echo_output_nominal_level = {
.name = "Line Playback Switch (-10dBV)" ,
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.info = snd_echo_output_nominal_info,
.get = snd_echo_output_nominal_get,
.put = snd_echo_output_nominal_put,
};
#endif /* ECHOCARD_HAS_OUTPUT_NOMINAL_LEVEL */
#ifdef ECHOCARD_HAS_INPUT_NOMINAL_LEVEL
/*************** Analog input nominal level (+4dBu / -10dBV) ***************/
static int snd_echo_input_nominal_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
struct echoaudio *chip;
chip = snd_kcontrol_chip(kcontrol);
uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
uinfo->count = num_analog_busses_in(chip);
uinfo->value.integer.min = 0 ;
uinfo->value.integer.max = 1 ;
return 0 ;
}
static int snd_echo_input_nominal_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip;
int c;
chip = snd_kcontrol_chip(kcontrol);
for (c = 0 ; c < num_analog_busses_in(chip); c++)
ucontrol->value.integer.value[c] =
chip->nominal_level[bx_analog_in(chip) + c];
return 0 ;
}
static int snd_echo_input_nominal_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip;
int c, changed;
changed = 0 ;
chip = snd_kcontrol_chip(kcontrol);
spin_lock_irq(&chip->lock);
for (c = 0 ; c < num_analog_busses_in(chip); c++) {
if (chip->nominal_level[bx_analog_in(chip) + c] !=
ucontrol->value.integer.value[c]) {
set_nominal_level(chip, bx_analog_in(chip) + c,
ucontrol->value.integer.value[c]);
changed = 1 ;
}
}
if (changed)
update_output_line_level(chip); /* "Output" is not a mistake
* here .
*/
spin_unlock_irq(&chip->lock);
return changed;
}
static const struct snd_kcontrol_new snd_echo_intput_nominal_level = {
.name = "Line Capture Switch (-10dBV)" ,
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.info = snd_echo_input_nominal_info,
.get = snd_echo_input_nominal_get,
.put = snd_echo_input_nominal_put,
};
#endif /* ECHOCARD_HAS_INPUT_NOMINAL_LEVEL */
#ifdef ECHOCARD_HAS_MONITOR
/******************* Monitor mixer *******************/
static int snd_echo_mixer_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 1 ;
uinfo->value.integer.min = ECHOGAIN_MINOUT;
uinfo->value.integer.max = ECHOGAIN_MAXOUT;
return 0 ;
}
static int snd_echo_mixer_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip = snd_kcontrol_chip(kcontrol);
unsigned int out = ucontrol->id.index / num_busses_in(chip);
unsigned int in = ucontrol->id.index % num_busses_in(chip);
if (out >= ECHO_MAXAUDIOOUTPUTS || in >= ECHO_MAXAUDIOINPUTS)
return -EINVAL;
ucontrol->value.integer.value[0 ] = chip->monitor_gain[out][in];
return 0 ;
}
static int snd_echo_mixer_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip;
int changed, gain;
unsigned int out, in;
changed = 0 ;
chip = snd_kcontrol_chip(kcontrol);
out = ucontrol->id.index / num_busses_in(chip);
in = ucontrol->id.index % num_busses_in(chip);
if (out >= ECHO_MAXAUDIOOUTPUTS || in >= ECHO_MAXAUDIOINPUTS)
return -EINVAL;
gain = ucontrol->value.integer.value[0 ];
if (gain < ECHOGAIN_MINOUT || gain > ECHOGAIN_MAXOUT)
return -EINVAL;
if (chip->monitor_gain[out][in] != gain) {
spin_lock_irq(&chip->lock);
set_monitor_gain(chip, out, in, gain);
update_output_line_level(chip);
spin_unlock_irq(&chip->lock);
changed = 1 ;
}
return changed;
}
static struct snd_kcontrol_new snd_echo_monitor_mixer = {
.name = "Monitor Mixer Volume" ,
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,
.info = snd_echo_mixer_info,
.get = snd_echo_mixer_get,
.put = snd_echo_mixer_put,
.tlv = {.p = db_scale_output_gain},
};
#endif /* ECHOCARD_HAS_MONITOR */
#ifdef ECHOCARD_HAS_VMIXER
/******************* Vmixer *******************/
static int snd_echo_vmixer_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 1 ;
uinfo->value.integer.min = ECHOGAIN_MINOUT;
uinfo->value.integer.max = ECHOGAIN_MAXOUT;
return 0 ;
}
static int snd_echo_vmixer_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip;
chip = snd_kcontrol_chip(kcontrol);
ucontrol->value.integer.value[0 ] =
chip->vmixer_gain[ucontrol->id.index / num_pipes_out(chip)]
[ucontrol->id.index % num_pipes_out(chip)];
return 0 ;
}
static int snd_echo_vmixer_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip;
int gain, changed;
short vch, out;
changed = 0 ;
chip = snd_kcontrol_chip(kcontrol);
out = ucontrol->id.index / num_pipes_out(chip);
vch = ucontrol->id.index % num_pipes_out(chip);
gain = ucontrol->value.integer.value[0 ];
if (gain < ECHOGAIN_MINOUT || gain > ECHOGAIN_MAXOUT)
return -EINVAL;
if (chip->vmixer_gain[out][vch] != ucontrol->value.integer.value[0 ]) {
spin_lock_irq(&chip->lock);
set_vmixer_gain(chip, out, vch, ucontrol->value.integer.value[0 ]);
update_vmixer_level(chip);
spin_unlock_irq(&chip->lock);
changed = 1 ;
}
return changed;
}
static struct snd_kcontrol_new snd_echo_vmixer = {
.name = "VMixer Volume" ,
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,
.info = snd_echo_vmixer_info,
.get = snd_echo_vmixer_get,
.put = snd_echo_vmixer_put,
.tlv = {.p = db_scale_output_gain},
};
#endif /* ECHOCARD_HAS_VMIXER */
#ifdef ECHOCARD_HAS_DIGITAL_MODE_SWITCH
/******************* Digital mode switch *******************/
static int snd_echo_digital_mode_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
static const char * const names[4 ] = {
"S/PDIF Coaxial" , "S/PDIF Optical" , "ADAT Optical" ,
"S/PDIF Cdrom"
};
struct echoaudio *chip;
chip = snd_kcontrol_chip(kcontrol);
return snd_ctl_enum_info(uinfo, 1 , chip->num_digital_modes, names);
}
static int snd_echo_digital_mode_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip;
int i, mode;
chip = snd_kcontrol_chip(kcontrol);
mode = chip->digital_mode;
for (i = chip->num_digital_modes - 1 ; i >= 0 ; i--)
if (mode == chip->digital_mode_list[i]) {
ucontrol->value.enumerated.item[0 ] = i;
break ;
}
return 0 ;
}
static int snd_echo_digital_mode_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip;
int changed;
unsigned short emode, dmode;
changed = 0 ;
chip = snd_kcontrol_chip(kcontrol);
emode = ucontrol->value.enumerated.item[0 ];
if (emode >= chip->num_digital_modes)
return -EINVAL;
dmode = chip->digital_mode_list[emode];
if (dmode != chip->digital_mode) {
/* mode_mutex is required to make this operation atomic wrt
pcm_digital_*_open() and set_input_clock() functions. */
mutex_lock(&chip->mode_mutex);
/* Do not allow the user to change the digital mode when a pcm
device is open because it also changes the number of channels
and the allowed sample rates */
if (chip->opencount) {
changed = -EAGAIN;
} else {
changed = set_digital_mode(chip, dmode);
/* If we had to change the clock source, report it */
if (changed > 0 && chip->clock_src_ctl) {
snd_ctl_notify(chip->card,
SNDRV_CTL_EVENT_MASK_VALUE,
&chip->clock_src_ctl->id);
dev_dbg(chip->card->dev,
"SDM() =%d\n" , changed);
}
if (changed >= 0 )
changed = 1 ; /* No errors */
}
mutex_unlock(&chip->mode_mutex);
}
return changed;
}
static const struct snd_kcontrol_new snd_echo_digital_mode_switch = {
.name = "Digital mode Switch" ,
.iface = SNDRV_CTL_ELEM_IFACE_CARD,
.info = snd_echo_digital_mode_info,
.get = snd_echo_digital_mode_get,
.put = snd_echo_digital_mode_put,
};
#endif /* ECHOCARD_HAS_DIGITAL_MODE_SWITCH */
#ifdef ECHOCARD_HAS_DIGITAL_IO
/******************* S/PDIF mode switch *******************/
static int snd_echo_spdif_mode_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
static const char * const names[2 ] = {"Consumer" , "Professional" };
return snd_ctl_enum_info(uinfo, 1 , 2 , names);
}
static int snd_echo_spdif_mode_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip;
chip = snd_kcontrol_chip(kcontrol);
ucontrol->value.enumerated.item[0 ] = !!chip->professional_spdif;
return 0 ;
}
static int snd_echo_spdif_mode_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip;
int mode;
chip = snd_kcontrol_chip(kcontrol);
mode = !!ucontrol->value.enumerated.item[0 ];
if (mode != chip->professional_spdif) {
spin_lock_irq(&chip->lock);
set_professional_spdif(chip, mode);
spin_unlock_irq(&chip->lock);
return 1 ;
}
return 0 ;
}
static const struct snd_kcontrol_new snd_echo_spdif_mode_switch = {
.name = "S/PDIF mode Switch" ,
.iface = SNDRV_CTL_ELEM_IFACE_CARD,
.info = snd_echo_spdif_mode_info,
.get = snd_echo_spdif_mode_get,
.put = snd_echo_spdif_mode_put,
};
#endif /* ECHOCARD_HAS_DIGITAL_IO */
#ifdef ECHOCARD_HAS_EXTERNAL_CLOCK
/******************* Select input clock source *******************/
static int snd_echo_clock_source_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
static const char * const names[8 ] = {
"Internal" , "Word" , "Super" , "S/PDIF" , "ADAT" , "ESync" ,
"ESync96" , "MTC"
};
struct echoaudio *chip;
chip = snd_kcontrol_chip(kcontrol);
return snd_ctl_enum_info(uinfo, 1 , chip->num_clock_sources, names);
}
static int snd_echo_clock_source_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip;
int i, clock;
chip = snd_kcontrol_chip(kcontrol);
clock = chip->input_clock;
for (i = 0 ; i < chip->num_clock_sources; i++)
if (clock == chip->clock_source_list[i])
ucontrol->value.enumerated.item[0 ] = i;
return 0 ;
}
static int snd_echo_clock_source_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip;
int changed;
unsigned int eclock, dclock;
changed = 0 ;
chip = snd_kcontrol_chip(kcontrol);
eclock = ucontrol->value.enumerated.item[0 ];
if (eclock >= chip->input_clock_types)
return -EINVAL;
dclock = chip->clock_source_list[eclock];
if (chip->input_clock != dclock) {
mutex_lock(&chip->mode_mutex);
spin_lock_irq(&chip->lock);
changed = set_input_clock(chip, dclock);
if (!changed)
changed = 1 ; /* no errors */
spin_unlock_irq(&chip->lock);
mutex_unlock(&chip->mode_mutex);
}
if (changed < 0 )
dev_dbg(chip->card->dev,
"seticlk val%d err 0x%x\n" , dclock, changed);
return changed;
}
static const struct snd_kcontrol_new snd_echo_clock_source_switch = {
.name = "Sample Clock Source" ,
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.info = snd_echo_clock_source_info,
.get = snd_echo_clock_source_get,
.put = snd_echo_clock_source_put,
};
#endif /* ECHOCARD_HAS_EXTERNAL_CLOCK */
#ifdef ECHOCARD_HAS_PHANTOM_POWER
/******************* Phantom power switch *******************/
#define snd_echo_phantom_power_info snd_ctl_boolean_mono_info
static int snd_echo_phantom_power_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip = snd_kcontrol_chip(kcontrol);
ucontrol->value.integer.value[0 ] = chip->phantom_power;
return 0 ;
}
static int snd_echo_phantom_power_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip = snd_kcontrol_chip(kcontrol);
int power, changed = 0 ;
power = !!ucontrol->value.integer.value[0 ];
if (chip->phantom_power != power) {
spin_lock_irq(&chip->lock);
changed = set_phantom_power(chip, power);
spin_unlock_irq(&chip->lock);
if (changed == 0 )
changed = 1 ; /* no errors */
}
return changed;
}
static const struct snd_kcontrol_new snd_echo_phantom_power_switch = {
.name = "Phantom power Switch" ,
.iface = SNDRV_CTL_ELEM_IFACE_CARD,
.info = snd_echo_phantom_power_info,
.get = snd_echo_phantom_power_get,
.put = snd_echo_phantom_power_put,
};
#endif /* ECHOCARD_HAS_PHANTOM_POWER */
#ifdef ECHOCARD_HAS_DIGITAL_IN_AUTOMUTE
/******************* Digital input automute switch *******************/
#define snd_echo_automute_info snd_ctl_boolean_mono_info
static int snd_echo_automute_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip = snd_kcontrol_chip(kcontrol);
ucontrol->value.integer.value[0 ] = chip->digital_in_automute;
return 0 ;
}
static int snd_echo_automute_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip = snd_kcontrol_chip(kcontrol);
int automute, changed = 0 ;
automute = !!ucontrol->value.integer.value[0 ];
if (chip->digital_in_automute != automute) {
spin_lock_irq(&chip->lock);
changed = set_input_auto_mute(chip, automute);
spin_unlock_irq(&chip->lock);
if (changed == 0 )
changed = 1 ; /* no errors */
}
return changed;
}
static const struct snd_kcontrol_new snd_echo_automute_switch = {
.name = "Digital Capture Switch (automute)" ,
.iface = SNDRV_CTL_ELEM_IFACE_CARD,
.info = snd_echo_automute_info,
.get = snd_echo_automute_get,
.put = snd_echo_automute_put,
};
#endif /* ECHOCARD_HAS_DIGITAL_IN_AUTOMUTE */
/******************* VU-meters switch *******************/
#define snd_echo_vumeters_switch_info snd_ctl_boolean_mono_info
static int snd_echo_vumeters_switch_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip;
chip = snd_kcontrol_chip(kcontrol);
spin_lock_irq(&chip->lock);
set_meters_on(chip, ucontrol->value.integer.value[0 ]);
spin_unlock_irq(&chip->lock);
return 1 ;
}
static const struct snd_kcontrol_new snd_echo_vumeters_switch = {
.name = "VU-meters Switch" ,
.iface = SNDRV_CTL_ELEM_IFACE_CARD,
.access = SNDRV_CTL_ELEM_ACCESS_WRITE,
.info = snd_echo_vumeters_switch_info,
.put = snd_echo_vumeters_switch_put,
};
/***** Read VU-meters (input, output, analog and digital together) *****/
static int snd_echo_vumeters_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 96 ;
uinfo->value.integer.min = ECHOGAIN_MINOUT;
uinfo->value.integer.max = 0 ;
return 0 ;
}
static int snd_echo_vumeters_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip;
chip = snd_kcontrol_chip(kcontrol);
get_audio_meters(chip, ucontrol->value.integer.value);
return 0 ;
}
static const struct snd_kcontrol_new snd_echo_vumeters = {
.name = "VU-meters" ,
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.access = SNDRV_CTL_ELEM_ACCESS_READ |
SNDRV_CTL_ELEM_ACCESS_VOLATILE |
SNDRV_CTL_ELEM_ACCESS_TLV_READ,
.info = snd_echo_vumeters_info,
.get = snd_echo_vumeters_get,
.tlv = {.p = db_scale_output_gain},
};
/*** Channels info - it exports informations about the number of channels ***/
static int snd_echo_channels_info_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 6 ;
uinfo->value.integer.min = 0 ;
uinfo->value.integer.max = 1 << ECHO_CLOCK_NUMBER;
return 0 ;
}
static int snd_echo_channels_info_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct echoaudio *chip;
int detected, clocks, bit, src;
chip = snd_kcontrol_chip(kcontrol);
ucontrol->value.integer.value[0 ] = num_busses_in(chip);
ucontrol->value.integer.value[1 ] = num_analog_busses_in(chip);
ucontrol->value.integer.value[2 ] = num_busses_out(chip);
ucontrol->value.integer.value[3 ] = num_analog_busses_out(chip);
ucontrol->value.integer.value[4 ] = num_pipes_out(chip);
/* Compute the bitmask of the currently valid input clocks */
detected = detect_input_clocks(chip);
clocks = 0 ;
src = chip->num_clock_sources - 1 ;
for (bit = ECHO_CLOCK_NUMBER - 1 ; bit >= 0 ; bit--)
if (detected & (1 << bit))
for (; src >= 0 ; src--)
if (bit == chip->clock_source_list[src]) {
clocks |= 1 << src;
break ;
}
ucontrol->value.integer.value[5 ] = clocks;
return 0 ;
}
static const struct snd_kcontrol_new snd_echo_channels_info = {
.name = "Channels info" ,
.iface = SNDRV_CTL_ELEM_IFACE_HWDEP,
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_echo_channels_info_info,
.get = snd_echo_channels_info_get,
};
/******************************************************************************
IRQ Handling
******************************************************************************/
/* Check if a period has elapsed since last interrupt
*
* Don ' t make any updates to state ; PCM core handles this with the
* correct locks .
*
* \ return true if a period has elapsed , otherwise false
*/
static bool period_has_elapsed(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct audiopipe *pipe = runtime->private_data;
u32 counter, step;
size_t period_bytes;
if (pipe->state != PIPE_STATE_STARTED)
return false ;
period_bytes = frames_to_bytes(runtime, runtime->period_size);
counter = le32_to_cpu(*pipe->dma_counter); /* presumed atomic */
step = counter - pipe->last_period; /* handles wrapping */
step -= step % period_bytes; /* acknowledge whole periods only */
if (step == 0 )
return false ; /* haven't advanced a whole period yet */
pipe->last_period += step; /* used exclusively by us */
return true ;
}
static irqreturn_t snd_echo_interrupt(int irq, void *dev_id)
{
struct echoaudio *chip = dev_id;
int ss, st;
spin_lock(&chip->lock);
st = service_irq(chip);
if (st < 0 ) {
spin_unlock(&chip->lock);
return IRQ_NONE;
}
/* The hardware doesn't tell us which substream caused the irq,
thus we have to check all running substreams. */
for (ss = 0 ; ss < DSP_MAXPIPES; ss++) {
struct snd_pcm_substream *substream;
substream = chip->substream[ss];
if (substream && period_has_elapsed(substream)) {
spin_unlock(&chip->lock);
snd_pcm_period_elapsed(substream);
spin_lock(&chip->lock);
}
}
spin_unlock(&chip->lock);
#ifdef ECHOCARD_HAS_MIDI
if (st > 0 && chip->midi_in) {
snd_rawmidi_receive(chip->midi_in, chip->midi_buffer, st);
dev_dbg(chip->card->dev, "rawmidi_iread=%d\n" , st);
}
#endif
return IRQ_HANDLED;
}
/******************************************************************************
Module construction / destruction
******************************************************************************/
static void snd_echo_free(struct snd_card *card)
{
struct echoaudio *chip = card->private_data;
if (chip->comm_page)
rest_in_peace(chip);
if (chip->irq >= 0 )
free_irq(chip->irq, chip);
/* release chip data */
free_firmware_cache(chip);
}
/* <--snd_echo_probe() */
static int snd_echo_create(struct snd_card *card,
struct pci_dev *pci)
{
struct echoaudio *chip = card->private_data;
int err;
size_t sz;
pci_write_config_byte(pci, PCI_LATENCY_TIMER, 0 xC0);
err = pcim_enable_device(pci);
if (err < 0 )
return err;
pci_set_master(pci);
/* Allocate chip if needed */
spin_lock_init(&chip->lock);
chip->card = card;
chip->pci = pci;
chip->irq = -1 ;
chip->opencount = 0 ;
mutex_init(&chip->mode_mutex);
chip->can_set_rate = 1 ;
/* PCI resource allocation */
err = pcim_request_all_regions(pci, ECHOCARD_NAME);
if (err < 0 )
return err;
chip->dsp_registers_phys = pci_resource_start(pci, 0 );
sz = pci_resource_len(pci, 0 );
if (sz > PAGE_SIZE)
sz = PAGE_SIZE; /* We map only the required part */
chip->dsp_registers = devm_ioremap(&pci->dev, chip->dsp_registers_phys, sz);
if (!chip->dsp_registers) {
dev_err(chip->card->dev, "ioremap failed\n" );
return -ENOMEM;
}
if (request_irq(pci->irq, snd_echo_interrupt, IRQF_SHARED,
KBUILD_MODNAME, chip)) {
dev_err(chip->card->dev, "cannot grab irq\n" );
return -EBUSY;
}
chip->irq = pci->irq;
card->sync_irq = chip->irq;
dev_dbg(card->dev, "pci=%p irq=%d subdev=%04x Init hardware...\n" ,
chip->pci, chip->irq, chip->pci->subsystem_device);
card->private_free = snd_echo_free;
/* Create the DSP comm page - this is the area of memory used for most
of the communication with the DSP, which accesses it via bus mastering */
chip->commpage_dma_buf =
snd_devm_alloc_pages(&pci->dev, SNDRV_DMA_TYPE_DEV,
sizeof (struct comm_page));
if (!chip->commpage_dma_buf)
return -ENOMEM;
chip->comm_page_phys = chip->commpage_dma_buf->addr;
chip->comm_page = (struct comm_page *)chip->commpage_dma_buf->area;
err = init_hw(chip, chip->pci->device, chip->pci->subsystem_device);
if (err >= 0 )
err = set_mixer_defaults(chip);
if (err < 0 ) {
dev_err(card->dev, "init_hw err=%d\n" , err);
return err;
}
return 0 ;
}
/* constructor */
static int __snd_echo_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
static int dev;
struct snd_card *card;
struct echoaudio *chip;
char *dsp;
int err;
if (dev >= SNDRV_CARDS)
return -ENODEV;
if (!enable[dev]) {
dev++;
return -ENOENT;
}
err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
sizeof (*chip), &card);
if (err < 0 )
return err;
chip = card->private_data;
err = snd_echo_create(card, pci);
if (err < 0 )
return err;
strscpy(card->driver, "Echo_" ECHOCARD_NAME);
strscpy(card->shortname, chip->card_name);
dsp = "56301" ;
if (pci_id->device == 0 x3410)
dsp = "56361" ;
sprintf(card->longname, "%s rev.%d (DSP%s) at 0x%lx irq %i" ,
card->shortname, pci_id->subdevice & 0 x000f, dsp,
chip->dsp_registers_phys, chip->irq);
err = snd_echo_new_pcm(chip);
if (err < 0 ) {
dev_err(chip->card->dev, "new pcm error %d\n" , err);
return err;
}
#ifdef ECHOCARD_HAS_MIDI
if (chip->has_midi) { /* Some Mia's do not have midi */
err = snd_echo_midi_create(card, chip);
if (err < 0 ) {
dev_err(chip->card->dev, "new midi error %d\n" , err);
return err;
}
}
#endif
#ifdef ECHOCARD_HAS_VMIXER
snd_echo_vmixer.count = num_pipes_out(chip) * num_busses_out(chip);
err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_vmixer, chip));
if (err < 0 )
return err;
#ifdef ECHOCARD_HAS_LINE_OUT_GAIN
err = snd_ctl_add(chip->card,
snd_ctl_new1(&snd_echo_line_output_gain, chip));
if (err < 0 )
return err;
#endif
#else /* ECHOCARD_HAS_VMIXER */
err = snd_ctl_add(chip->card,
snd_ctl_new1(&snd_echo_pcm_output_gain, chip));
if (err < 0 )
return err;
#endif /* ECHOCARD_HAS_VMIXER */
#ifdef ECHOCARD_HAS_INPUT_GAIN
err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_line_input_gain, chip));
if (err < 0 )
return err;
#endif
#ifdef ECHOCARD_HAS_INPUT_NOMINAL_LEVEL
if (!chip->hasnt_input_nominal_level) {
err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_intput_nominal_level, chip));
if (err < 0 )
return err;
}
#endif
#ifdef ECHOCARD_HAS_OUTPUT_NOMINAL_LEVEL
err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_output_nominal_level, chip));
if (err < 0 )
return err;
#endif
err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_vumeters_switch, chip));
if (err < 0 )
return err;
err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_vumeters, chip));
if (err < 0 )
return err;
#ifdef ECHOCARD_HAS_MONITOR
snd_echo_monitor_mixer.count = num_busses_in(chip) * num_busses_out(chip);
err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_monitor_mixer, chip));
if (err < 0 )
return err;
#endif
#ifdef ECHOCARD_HAS_DIGITAL_IN_AUTOMUTE
err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_automute_switch, chip));
if (err < 0 )
return err;
#endif
err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_channels_info, chip));
if (err < 0 )
return err;
#ifdef ECHOCARD_HAS_DIGITAL_MODE_SWITCH
/* Creates a list of available digital modes */
chip->num_digital_modes = 0 ;
for (int i = 0 ; i < 6 ; i++)
if (chip->digital_modes & (1 << i))
chip->digital_mode_list[chip->num_digital_modes++] = i;
err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_digital_mode_switch, chip));
if (err < 0 )
return err;
#endif /* ECHOCARD_HAS_DIGITAL_MODE_SWITCH */
#ifdef ECHOCARD_HAS_EXTERNAL_CLOCK
/* Creates a list of available clock sources */
chip->num_clock_sources = 0 ;
for (int i = 0 ; i < 10 ; i++)
if (chip->input_clock_types & (1 << i))
chip->clock_source_list[chip->num_clock_sources++] = i;
if (chip->num_clock_sources > 1 ) {
chip->clock_src_ctl = snd_ctl_new1(&snd_echo_clock_source_switch, chip);
err = snd_ctl_add(chip->card, chip->clock_src_ctl);
if (err < 0 )
return err;
}
#endif /* ECHOCARD_HAS_EXTERNAL_CLOCK */
#ifdef ECHOCARD_HAS_DIGITAL_IO
err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_spdif_mode_switch, chip));
if (err < 0 )
return err;
#endif
#ifdef ECHOCARD_HAS_PHANTOM_POWER
if (chip->has_phantom_power) {
err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_phantom_power_switch, chip));
if (err < 0 )
return err;
}
#endif
err = snd_card_register(card);
if (err < 0 )
return err;
dev_info(card->dev, "Card registered: %s\n" , card->longname);
pci_set_drvdata(pci, chip);
dev++;
return 0 ;
}
static int snd_echo_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
return snd_card_free_on_error(&pci->dev, __snd_echo_probe(pci, pci_id));
}
static int snd_echo_suspend(struct device *dev)
{
struct echoaudio *chip = dev_get_drvdata(dev);
#ifdef ECHOCARD_HAS_MIDI
/* This call can sleep */
if (chip->midi_out)
snd_echo_midi_output_trigger(chip->midi_out, 0 );
#endif
spin_lock_irq(&chip->lock);
if (wait_handshake(chip)) {
spin_unlock_irq(&chip->lock);
return -EIO;
}
clear_handshake(chip);
if (send_vector(chip, DSP_VC_GO_COMATOSE) < 0 ) {
spin_unlock_irq(&chip->lock);
return -EIO;
}
spin_unlock_irq(&chip->lock);
chip->dsp_code = NULL;
free_irq(chip->irq, chip);
chip->irq = -1 ;
chip->card->sync_irq = -1 ;
return 0 ;
}
static int snd_echo_resume(struct device *dev)
{
struct pci_dev *pci = to_pci_dev(dev);
struct echoaudio *chip = dev_get_drvdata(dev);
struct comm_page *commpage, *commpage_bak;
u32 pipe_alloc_mask;
int err;
commpage = chip->comm_page;
commpage_bak = kmemdup(commpage, sizeof (*commpage), GFP_KERNEL);
if (commpage_bak == NULL)
return -ENOMEM;
err = init_hw(chip, chip->pci->device, chip->pci->subsystem_device);
if (err < 0 ) {
kfree(commpage_bak);
dev_err(dev, "resume init_hw err=%d\n" , err);
return err;
}
/* Temporarily set chip->pipe_alloc_mask=0 otherwise
* restore_dsp_settings ( ) fails .
*/
pipe_alloc_mask = chip->pipe_alloc_mask;
chip->pipe_alloc_mask = 0 ;
err = restore_dsp_rettings(chip);
chip->pipe_alloc_mask = pipe_alloc_mask;
if (err < 0 ) {
kfree(commpage_bak);
return err;
}
memcpy(&commpage->audio_format, &commpage_bak->audio_format,
sizeof (commpage->audio_format));
memcpy(&commpage->sglist_addr, &commpage_bak->sglist_addr,
sizeof (commpage->sglist_addr));
memcpy(&commpage->midi_output, &commpage_bak->midi_output,
sizeof (commpage->midi_output));
kfree(commpage_bak);
if (request_irq(pci->irq, snd_echo_interrupt, IRQF_SHARED,
KBUILD_MODNAME, chip)) {
dev_err(chip->card->dev, "cannot grab irq\n" );
return -EBUSY;
}
chip->irq = pci->irq;
chip->card->sync_irq = chip->irq;
dev_dbg(dev, "resume irq=%d\n" , chip->irq);
#ifdef ECHOCARD_HAS_MIDI
if (chip->midi_input_enabled)
enable_midi_input(chip, true );
if (chip->midi_out)
snd_echo_midi_output_trigger(chip->midi_out, 1 );
#endif
return 0 ;
}
static DEFINE_SIMPLE_DEV_PM_OPS(snd_echo_pm, snd_echo_suspend, snd_echo_resume);
/******************************************************************************
Everything starts and ends here
******************************************************************************/
/* pci_driver definition */
static struct pci_driver echo_driver = {
.name = KBUILD_MODNAME,
.id_table = snd_echo_ids,
.probe = snd_echo_probe,
.driver = {
.pm = &snd_echo_pm,
},
};
module_pci_driver(echo_driver);
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