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echoaudio.c
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echoaudio.c
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/*
* ALSA driver for Echoaudio soundcards.
* Copyright (C) 2003-2004 Giuliano Pochini <[email protected]>
*
* This program 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; version 2 of the License.
*
* 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.
*/
MODULE_AUTHOR("Giuliano Pochini <[email protected]>");
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Echoaudio " ECHOCARD_NAME " soundcards driver");
MODULE_SUPPORTED_DEVICE("{{Echoaudio," ECHOCARD_NAME "}}");
MODULE_DEVICE_TABLE(pci, snd_echo_ids);
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
static int 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 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,
const struct firmware *frm, struct echoaudio *chip)
{
int err;
char name[30];
DE_ACT(("firmware requested: %s\n", frm->data));
snprintf(name, sizeof(name), "ea/%s", frm->data);
if ((err = request_firmware(fw_entry, name, pci_device(chip))) < 0)
snd_printk(KERN_ERR "get_firmware(): Firmware not available (%d)\n", err);
return err;
}
static void free_firmware(const struct firmware *fw_entry)
{
release_firmware(fw_entry);
DE_ACT(("firmware released\n"));
}
/******************************************************************************
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;
if (!chip->can_set_rate) {
snd_interval_any(&fixed);
fixed.min = fixed.max = chip->sample_rate;
return snd_interval_refine(rate, &fixed);
}
return 0;
}
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));
DE_HWP(("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 */
if ((err = snd_pcm_hw_constraint_list(runtime, 0,
SNDRV_PCM_HW_PARAM_CHANNELS,
&pipe->constr)) < 0)
return err;
/* All periods should have the same size */
if ((err = snd_pcm_hw_constraint_integer(runtime,
SNDRV_PCM_HW_PARAM_PERIODS)) < 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 */
if ((err = snd_pcm_hw_constraint_step(runtime, 0,
SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
32)) < 0)
return err;
if ((err = snd_pcm_hw_constraint_step(runtime, 0,
SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
32)) < 0)
return err;
if ((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)) < 0)
return err;
/* Finally allocate a page for the scatter-gather list */
if ((err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
snd_dma_pci_data(chip->pci),
PAGE_SIZE, &pipe->sgpage)) < 0) {
DE_HWP(("s-g list allocation failed\n"));
return err;
}
return 0;
}
static int pcm_analog_in_open(struct snd_pcm_substream *substream)
{
struct echoaudio *chip = snd_pcm_substream_chip(substream);
int err;
DE_ACT(("pcm_analog_in_open\n"));
if ((err = pcm_open(substream, num_analog_busses_in(chip) -
substream->number)) < 0)
return err;
if ((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)) < 0)
return err;
if ((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)) < 0)
return err;
atomic_inc(&chip->opencount);
if (atomic_read(&chip->opencount) > 1 && chip->rate_set)
chip->can_set_rate=0;
DE_HWP(("pcm_analog_in_open cs=%d oc=%d r=%d\n",
chip->can_set_rate, atomic_read(&chip->opencount),
chip->sample_rate));
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
DE_ACT(("pcm_analog_out_open\n"));
if ((err = pcm_open(substream, max_channels - substream->number)) < 0)
return err;
if ((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)) < 0)
return err;
if ((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)) < 0)
return err;
atomic_inc(&chip->opencount);
if (atomic_read(&chip->opencount) > 1 && chip->rate_set)
chip->can_set_rate=0;
DE_HWP(("pcm_analog_out_open cs=%d oc=%d r=%d\n",
chip->can_set_rate, atomic_read(&chip->opencount),
chip->sample_rate));
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;
DE_ACT(("pcm_digital_in_open\n"));
max_channels = num_digital_busses_in(chip) - substream->number;
down(&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;
if ((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)) < 0)
goto din_exit;
if ((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)) < 0)
goto din_exit;
atomic_inc(&chip->opencount);
if (atomic_read(&chip->opencount) > 1 && chip->rate_set)
chip->can_set_rate=0;
din_exit:
up(&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;
DE_ACT(("pcm_digital_out_open\n"));
max_channels = num_digital_busses_out(chip) - substream->number;
down(&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;
if ((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)) < 0)
goto dout_exit;
if ((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)) < 0)
goto dout_exit;
atomic_inc(&chip->opencount);
if (atomic_read(&chip->opencount) > 1 && chip->rate_set)
chip->can_set_rate=0;
dout_exit:
up(&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);
int oc;
/* Nothing to do here. Audio is already off and pipe will be
* freed by its callback
*/
DE_ACT(("pcm_close\n"));
atomic_dec(&chip->opencount);
oc = atomic_read(&chip->opencount);
DE_ACT(("pcm_close oc=%d cs=%d rs=%d\n", oc,
chip->can_set_rate, chip->rate_set));
if (oc < 2)
chip->can_set_rate = 1;
if (oc == 0)
chip->rate_set = 0;
DE_ACT(("pcm_close2 oc=%d cs=%d rs=%d\n", oc,
chip->can_set_rate,chip->rate_set));
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 snd_sg_buf *sgbuf;
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) {
DE_HWP(("hwp_ie free(%d)\n", pipe->index));
err = free_pipes(chip, pipe);
snd_assert(!err);
chip->substream[pipe->index] = NULL;
}
err = allocate_pipes(chip, pipe, pipe_index, interleave);
if (err < 0) {
spin_unlock_irq(&chip->lock);
DE_ACT((KERN_NOTICE "allocate_pipes(%d) err=%d\n",
pipe_index, err));
return err;
}
spin_unlock_irq(&chip->lock);
DE_ACT((KERN_NOTICE "allocate_pipes()=%d\n", pipe_index));
DE_HWP(("pcm_hw_params (bufsize=%dB periods=%d persize=%dB)\n",
params_buffer_bytes(hw_params), params_periods(hw_params),
params_period_bytes(hw_params)));
err = snd_pcm_lib_malloc_pages(substream,
params_buffer_bytes(hw_params));
if (err < 0) {
snd_printk(KERN_ERR "malloc_pages err=%d\n", err);
spin_lock_irq(&chip->lock);
free_pipes(chip, pipe);
spin_unlock_irq(&chip->lock);
pipe->index = -1;
return err;
}
sgbuf = snd_pcm_substream_sgbuf(substream);
DE_HWP(("pcm_hw_params table size=%d pages=%d\n",
sgbuf->size, sgbuf->pages));
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) {
if (rest <= edge - offs) {
sglist_add_mapping(chip, pipe,
snd_sgbuf_get_addr(sgbuf, offs),
rest);
sglist_add_irq(chip, pipe);
offs += rest;
rest = 0;
} else {
sglist_add_mapping(chip, pipe,
snd_sgbuf_get_addr(sgbuf, offs),
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
*/
chip->last_period[pipe_index] = 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);
DE_HWP(("pcm_hw_params ok\n"));
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) {
DE_HWP(("pcm_hw_free(%d)\n", pipe->index));
free_pipes(chip, pipe);
chip->substream[pipe->index] = NULL;
pipe->index = -1;
}
spin_unlock_irq(&chip->lock);
DE_HWP(("pcm_hw_freed\n"));
snd_pcm_lib_free_pages(substream);
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;
DE_HWP(("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;
case SNDRV_PCM_FORMAT_S32_LE:
format.bits_per_sample = 32;
break;
default:
DE_HWP(("Prepare error: unsupported format %d\n",
runtime->format));
return -EINVAL;
}
snd_assert(pipe_index < px_num(chip), return -EINVAL);
snd_assert(is_pipe_allocated(chip, pipe_index), return -EINVAL);
set_audio_format(chip, pipe_index, &format);
return 0;
}
static int pcm_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct echoaudio *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
struct audiopipe *pipe = runtime->private_data;
int i, err;
u32 channelmask = 0;
struct list_head *pos;
struct snd_pcm_substream *s;
snd_pcm_group_for_each(pos, substream) {
s = snd_pcm_group_substream_entry(pos);
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_START:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
DE_ACT(("pcm_trigger start\n"));
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:
chip->last_period[i] = 0;
pipe->last_counter = 0;
pipe->position = 0;
*pipe->dma_counter = 0;
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_STOP:
DE_ACT(("pcm_trigger stop\n"));
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:
DE_ACT(("pcm_trigger pause\n"));
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;
size_t cnt, bufsize, pos;
cnt = le32_to_cpu(*pipe->dma_counter);
pipe->position += cnt - pipe->last_counter;
pipe->last_counter = cnt;
bufsize = substream->runtime->buffer_size;
pos = bytes_to_frames(substream->runtime, pipe->position);
while (pos >= bufsize) {
pipe->position -= frames_to_bytes(substream->runtime, bufsize);
pos -= bufsize;
}
return pos;
}
/* pcm *_ops structures */
static struct snd_pcm_ops analog_playback_ops = {
.open = pcm_analog_out_open,
.close = pcm_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = pcm_analog_out_hw_params,
.hw_free = pcm_hw_free,
.prepare = pcm_prepare,
.trigger = pcm_trigger,
.pointer = pcm_pointer,
.page = snd_pcm_sgbuf_ops_page,
};
static struct snd_pcm_ops analog_capture_ops = {
.open = pcm_analog_in_open,
.close = pcm_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = pcm_analog_in_hw_params,
.hw_free = pcm_hw_free,
.prepare = pcm_prepare,
.trigger = pcm_trigger,
.pointer = pcm_pointer,
.page = snd_pcm_sgbuf_ops_page,
};
#ifdef ECHOCARD_HAS_DIGITAL_IO
#ifndef ECHOCARD_HAS_VMIXER
static struct snd_pcm_ops digital_playback_ops = {
.open = pcm_digital_out_open,
.close = pcm_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = pcm_digital_out_hw_params,
.hw_free = pcm_hw_free,
.prepare = pcm_prepare,
.trigger = pcm_trigger,
.pointer = pcm_pointer,
.page = snd_pcm_sgbuf_ops_page,
};
#endif /* !ECHOCARD_HAS_VMIXER */
static struct snd_pcm_ops digital_capture_ops = {
.open = pcm_digital_in_open,
.close = pcm_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = pcm_digital_in_hw_params,
.hw_free = pcm_hw_free,
.prepare = pcm_prepare,
.trigger = pcm_trigger,
.pointer = pcm_pointer,
.page = snd_pcm_sgbuf_ops_page,
};
#endif /* ECHOCARD_HAS_DIGITAL_IO */
/* Preallocate memory only for the first substream because it's the most
* used one
*/
static int snd_echo_preallocate_pages(struct snd_pcm *pcm, struct device *dev)
{
struct snd_pcm_substream *ss;
int stream, err;
for (stream = 0; stream < 2; stream++)
for (ss = pcm->streams[stream].substream; ss; ss = ss->next) {
err = snd_pcm_lib_preallocate_pages(ss, SNDRV_DMA_TYPE_DEV_SG,
dev,
ss->number ? 0 : 128<<10,
256<<10);
if (err < 0)
return err;
}
return 0;
}
/*<--snd_echo_probe() */
static int __devinit 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 */
if ((err = snd_pcm_new(chip->card, "PCM", 0, num_pipes_out(chip),
num_analog_busses_in(chip), &pcm)) < 0)
return err;
pcm->private_data = chip;
chip->analog_pcm = pcm;
strcpy(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);
if ((err = snd_echo_preallocate_pages(pcm, snd_dma_pci_data(chip->pci))) < 0)
return err;
DE_INIT(("Analog PCM ok\n"));
#ifdef ECHOCARD_HAS_DIGITAL_IO
/* PCM#1 Digital inputs, no outputs */
if ((err = snd_pcm_new(chip->card, "Digital PCM", 1, 0,
num_digital_busses_in(chip), &pcm)) < 0)
return err;
pcm->private_data = chip;
chip->digital_pcm = pcm;
strcpy(pcm->name, chip->card->shortname);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &digital_capture_ops);
if ((err = snd_echo_preallocate_pages(pcm, snd_dma_pci_data(chip->pci))) < 0)
return err;
DE_INIT(("Digital PCM ok\n"));
#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 */
if ((err = snd_pcm_new(chip->card, "Analog PCM", 0,
num_analog_busses_out(chip),
num_analog_busses_in(chip), &pcm)) < 0)
return err;
pcm->private_data = chip;
chip->analog_pcm = pcm;
strcpy(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);
if ((err = snd_echo_preallocate_pages(pcm, snd_dma_pci_data(chip->pci))) < 0)
return err;
DE_INIT(("Analog PCM ok\n"));
#ifdef ECHOCARD_HAS_DIGITAL_IO
/* PCM#1 Digital i/o */
if ((err = snd_pcm_new(chip->card, "Digital PCM", 1,
num_digital_busses_out(chip),
num_digital_busses_in(chip), &pcm)) < 0)
return err;
pcm->private_data = chip;
chip->digital_pcm = pcm;
strcpy(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);
if ((err = snd_echo_preallocate_pages(pcm, snd_dma_pci_data(chip->pci))) < 0)
return err;
DE_INIT(("Digital PCM ok\n"));
#endif /* ECHOCARD_HAS_DIGITAL_IO */
#endif /* ECHOCARD_HAS_VMIXER */
return 0;
}
/******************************************************************************
Control interface
******************************************************************************/
/******************* 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);