static int __devinit snd_card_saudio_pcm(struct snd_saudio *saudio, int device,
int substreams)
{
struct snd_pcm *pcm;
int err;
ADEBUG();
err = snd_pcm_new(saudio->card, "SAUDIO PCM", device,
substreams, substreams, &pcm);
if (err < 0)
return err;
pcm->private_data = saudio;
saudio->pcm[device] = pcm;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
&snd_card_saudio_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
&snd_card_saudio_capture_ops);
pcm->private_data = saudio;
pcm->info_flags = 0;
strcpy(pcm->name, "SAUDIO PCM");
pcm->private_free = saudio_pcm_lib_preallocate_free_for_all;
saudio_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data
(GFP_KERNEL), MAX_BUFFER_SIZE,
MAX_BUFFER_SIZE);
return 0;
}
/*
* SSP Platform functions
*/
static int ssp_platform_pcm_new(struct snd_soc_pcm_runtime *soc_runtime)
{
int retval = 0;
struct snd_soc_dai *dai;
struct snd_pcm *pcm;
pr_debug("SSP DAI: FCT %s enters\n",
__func__);
/*
* Do pre-allocation to all substreams of the given pcm for the
* specified DMA type.
*
*/
dai = soc_runtime->cpu_dai;
pcm = soc_runtime->pcm;
if (dai->driver->playback.channels_min ||
dai->driver->capture.channels_min) {
retval = snd_pcm_lib_preallocate_pages_for_all(pcm,
SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data(GFP_KERNEL),
SSP_MIN_BUFFER, SSP_MAX_BUFFER);
if (retval) {
pr_err("DMA buffer allocation fail\n");
return retval;
}
}
return retval;
} /* ssp_platform_pcm_new */
int snd_bcm2835_new_spdif_pcm(struct bcm2835_chip *chip)
{
struct snd_pcm *pcm;
int err;
audio_info(" .. IN\n");
if (mutex_lock_interruptible(&chip->audio_mutex)) {
audio_error("Interrupted whilst waiting for lock\n");
return -EINTR;
}
err = snd_pcm_new(chip->card, "bcm2835 ALSA", 1, 1, 0, &pcm);
if (err < 0)
goto out;
pcm->private_data = chip;
strcpy(pcm->name, "bcm2835 IEC958/HDMI");
chip->pcm_spdif = pcm;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
&snd_bcm2835_playback_spdif_ops);
/* pre-allocation of buffers */
/* NOTE: this may fail */
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data(GFP_KERNEL),
snd_bcm2835_playback_spdif_hw.buffer_bytes_max, snd_bcm2835_playback_spdif_hw.buffer_bytes_max);
out:
mutex_unlock(&chip->audio_mutex);
audio_info(" .. OUT\n");
return 0;
}
/* create a pcm device */
int __devinit snd_bcm2835_new_pcm(bcm2835_chip_t * chip)
{
struct snd_pcm *pcm;
int err;
audio_info(" .. IN\n");
err =
snd_pcm_new(chip->card, "bcm2835 ALSA", 0, MAX_SUBSTREAMS, 0, &pcm);
if (err < 0)
return err;
pcm->private_data = chip;
strcpy(pcm->name, "bcm2835 ALSA");
chip->pcm = pcm;
chip->dest = AUDIO_DEST_AUTO;
chip->volume = 100;
/* set operators */
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
&snd_bcm2835_playback_ops);
/* pre-allocation of buffers */
/* NOTE: this may fail */
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data
(GFP_KERNEL), 64 * 1024,
64 * 1024);
audio_info(" .. OUT\n");
return 0;
}
static int __devinit snd_card_dummy_pcm(struct snd_dummy *dummy, int device,
int substreams)
{
struct snd_pcm *pcm;
struct snd_pcm_ops *ops;
int err;
err = snd_pcm_new(dummy->card, "Dummy PCM", device,
substreams, substreams, &pcm);
if (err < 0)
return err;
dummy->pcm = pcm;
if (fake_buffer)
ops = &dummy_pcm_ops_no_buf;
else
ops = &dummy_pcm_ops;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, ops);
pcm->private_data = dummy;
pcm->info_flags = 0;
strcpy(pcm->name, "Dummy PCM");
if (!fake_buffer) {
snd_pcm_lib_preallocate_pages_for_all(pcm,
SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data(GFP_KERNEL),
0, 64*1024);
}
return 0;
}
/* TO DO: set up to handle more than one pcm instance */
static int __init snd_aicapcmchip(struct snd_card_aica
*dreamcastcard, int pcm_index)
{
struct snd_pcm *pcm;
int err;
/* AICA has no capture ability */
err =
snd_pcm_new(dreamcastcard->card, "AICA PCM", pcm_index, 1, 0,
&pcm);
if (unlikely(err < 0))
return err;
pcm->private_data = dreamcastcard;
strcpy(pcm->name, "AICA PCM");
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
&snd_aicapcm_playback_ops);
/* Allocate the DMA buffers */
err =
snd_pcm_lib_preallocate_pages_for_all(pcm,
SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data
(GFP_KERNEL),
AICA_BUFFER_SIZE,
AICA_BUFFER_SIZE);
return err;
}
static int __devinit snd_card_capture_allocate(pcm_hw_t *snd_card, int device,char* name)
{
int err;
snd_pcm_t *pcm;
err = snd_pcm_new(snd_card->card,name,device, 0, 1, &pcm);
if (err < 0)
return err;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_capture_ops_pcm);
pcm->private_data = snd_card;
pcm->private_free = snd_card_pcm_free;
pcm->info_flags = 0;
snd_card->pcm = pcm;
strcpy(pcm->name, name);
snd_pcm_lib_preallocate_pages_for_all(pcm,
SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data(GFP_KERNEL),
PCM_PREALLOC_SIZE,
PCM_PREALLOC_MAX);
return 0;
}
/* create a PCM device */
static int snd_line6_new_pcm(struct snd_line6_pcm *line6pcm)
{
struct snd_pcm *pcm;
int err;
err = snd_pcm_new(line6pcm->line6->card,
(char *)line6pcm->line6->properties->name,
0, 1, 1, &pcm);
if (err < 0)
return err;
pcm->private_data = line6pcm;
pcm->private_free = line6_cleanup_pcm;
line6pcm->pcm = pcm;
strcpy(pcm->name, line6pcm->line6->properties->name);
/* set operators */
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
&snd_line6_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_line6_capture_ops);
/* pre-allocation of buffers */
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data
(GFP_KERNEL), 64 * 1024,
128 * 1024);
return 0;
}
static int dw_pcm_new(struct snd_soc_pcm_runtime *rtd)
{
size_t size = dw_pcm_hardware.buffer_bytes_max;
return snd_pcm_lib_preallocate_pages_for_all(rtd->pcm,
SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data(GFP_KERNEL), size, size);
}
/*
* intel_alsa_create_pcm_device : to setup pcm for the card
*
* Input parameters
* @card : pointer to the sound card structure
* @p_alsa_ssp_snd_card : pointer to internal context
*
* Output parameters
* @ret_val : status, 0 ==> OK
*
*/
static int intel_alsa_create_pcm_device(struct snd_card *card,
struct intel_alsa_ssp_card_info *p_alsa_ssp_snd_card)
{
struct snd_pcm *pl_pcm;
int i, ret_val = 0;
WARN(!card, "ALSA_SSP: ERROR NULL card\n");
if (!card)
return -EINVAL;
WARN(!p_alsa_ssp_snd_card,
"ALSA_SSP: ERROR NULL p_alsa_ssp_snd_card\n");
if (!p_alsa_ssp_snd_card)
return -EINVAL;
/*
* The alsa_ssp driver handles provide 2 PCM devices :
* device 0 ==> BT with 1 capture sub-stream + 1 play sub-stream
* device 1 ==> FM with 1 capture sub-stream + 0 play sub-stream
* These 2 devices are exclusive
*/
for (i = 0; i < INTEL_ALSA_SSP_SND_CARD_MAX_DEVICES; i++) {
ret_val = snd_pcm_new(card, s_dev_info[i].dev_name, i,
s_dev_info[i].nb_play_stream,
s_dev_info[i].nb_capt_stream,
&pl_pcm);
if (ret_val)
return ret_val;
/* setup the ops for playback and capture streams */
snd_pcm_set_ops(pl_pcm, SNDRV_PCM_STREAM_PLAYBACK,
&s_alsa_ssp_playback_ops);
snd_pcm_set_ops(pl_pcm, SNDRV_PCM_STREAM_CAPTURE,
&s_alsa_ssp_capture_ops);
/* setup private data which can be retrieved when required */
pl_pcm->private_data = p_alsa_ssp_snd_card;
pl_pcm->info_flags = 0;
strncpy(pl_pcm->name, card->shortname, strlen(card->shortname));
/*
* allocate DMA pages for ALSA stream operations pre-allocation
* to all substreams of the given pcm for the specified DMA type
*/
snd_pcm_lib_preallocate_pages_for_all(pl_pcm,
SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data
(GFP_KERNEL),
s_dev_info[i].stream_hw_param->buffer_bytes_max,
s_dev_info[i].stream_hw_param->buffer_bytes_max);
}
return ret_val;
}
static int __init
vaudio_snd_card_pcm (NkVaudio vaudio, int device)
{
struct snd_pcm* pcm;
int err;
ADEBUG();
if ((err = snd_pcm_new(vaudio->card, "VAUDIO PCM", device, 1, 1, &pcm)) < 0)
return err;
pcm->private_data = vaudio;
/* Set up initial buffer with continuous allocation */
#ifdef VAUDIO_CONFIG_NK_PMEM
pcm->private_free = vaudio_pcm_lib_preallocate_free_for_all;
vaudio_pcm_lib_preallocate_pages_for_all(pcm,
SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data
(GFP_KERNEL),
NK_VAUDIO_MAX_RING_SIZE,
NK_VAUDIO_MAX_RING_SIZE);
#else
snd_pcm_lib_preallocate_pages_for_all(pcm,
SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data
(GFP_KERNEL),
NK_VAUDIO_MAX_RING_SIZE,
NK_VAUDIO_MAX_RING_SIZE);
#endif
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
&vaudio_snd_card_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
&vaudio_snd_card_capture_ops);
pcm->info_flags = 0;
snprintf (pcm->name, sizeof pcm->name, "virtual audio pcm");
vaudio->pcm[device] = pcm;
return 0;
}
int usbtv_audio_init(struct usbtv *usbtv)
{
int rv;
struct snd_card *card;
struct snd_pcm *pcm;
INIT_WORK(&usbtv->snd_trigger, snd_usbtv_trigger);
atomic_set(&usbtv->snd_stream, 0);
rv = snd_card_new(&usbtv->udev->dev, SNDRV_DEFAULT_IDX1, "usbtv",
THIS_MODULE, 0, &card);
if (rv < 0)
return rv;
strlcpy(card->driver, usbtv->dev->driver->name, sizeof(card->driver));
strlcpy(card->shortname, "usbtv", sizeof(card->shortname));
snprintf(card->longname, sizeof(card->longname),
"USBTV Audio at bus %d device %d", usbtv->udev->bus->busnum,
usbtv->udev->devnum);
snd_card_set_dev(card, usbtv->dev);
usbtv->snd = card;
rv = snd_pcm_new(card, "USBTV Audio", 0, 0, 1, &pcm);
if (rv < 0)
goto err;
strlcpy(pcm->name, "USBTV Audio Input", sizeof(pcm->name));
pcm->info_flags = 0;
pcm->private_data = usbtv;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_usbtv_pcm_ops);
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data(GFP_KERNEL), USBTV_AUDIO_BUFFER,
USBTV_AUDIO_BUFFER);
rv = snd_card_register(card);
if (rv)
goto err;
return 0;
err:
usbtv->snd = NULL;
snd_card_free(card);
return rv;
}
/**
* snd_intelmad_pcm_new - to setup pcm for the card
*
* @card: pointer to the sound card structure
* @intelmaddata: pointer to internal context
* @pb: playback count for this card
* @cap: capture count for this card
* @index: device index
*
* This function is called from probe function to set up pcm params
* and functions
*/
static int __devinit snd_intelmad_pcm_new(struct snd_card *card,
struct snd_intelmad *intelmaddata,
unsigned int pb, unsigned int cap, unsigned int index)
{
int ret_val = 0;
struct snd_pcm *pcm;
char name[32] = INTEL_MAD;
struct snd_pcm_ops *pb_ops = NULL, *cap_ops = NULL;
pr_debug("called for pb %d, cp %d, idx %d\n", pb, cap, index);
ret_val = snd_pcm_new(card, name, index, pb, cap, &pcm);
if (ret_val)
return ret_val;
/* setup the ops for playback and capture streams */
switch (index) {
case 0:
pb_ops = &snd_intelmad_headset_ops;
cap_ops = &snd_intelmad_capture_ops;
break;
case 1:
pb_ops = &snd_intelmad_ihf_ops;
cap_ops = &snd_intelmad_capture_ops;
break;
case 2:
pb_ops = &snd_intelmad_vibra_ops;
cap_ops = &snd_intelmad_capture_ops;
break;
case 3:
pb_ops = &snd_intelmad_haptic_ops;
cap_ops = &snd_intelmad_capture_ops;
break;
}
if (pb)
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, pb_ops);
if (cap)
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, cap_ops);
/* setup private data which can be retrieved when required */
pcm->private_data = intelmaddata;
pcm->private_free = snd_intelmad_page_free;
pcm->info_flags = 0;
strncpy(pcm->name, card->shortname, strlen(card->shortname));
/* allocate dma pages for ALSA stream operations */
snd_pcm_lib_preallocate_pages_for_all(pcm,
SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data(GFP_KERNEL),
MIN_BUFFER, MAX_BUFFER);
return ret_val;
}
static int __devinit snd_card_dummy_pcm(struct snd_dummy *dummy, int device, int substreams)
{
struct snd_pcm *pcm;
int err;
err = snd_pcm_new(dummy->card, "Dummy PCM", device, substreams, substreams, &pcm);
if (err < 0)
return err;
dummy->pcm = pcm;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_card_dummy_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_dummy_capture_ops);
pcm->private_data = dummy;
pcm->info_flags = 0;
strcpy(pcm->name, "Dummy PCM");
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, snd_dma_continuous_data(GFP_KERNEL), 128 * 1024, 1024 * 1024);
return 0;
}
static int sst_pcm_new(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_dai *dai = rtd->cpu_dai;
struct snd_pcm *pcm = rtd->pcm;
int retval = 0;
if (dai->driver->playback.channels_min ||
dai->driver->capture.channels_min) {
retval = snd_pcm_lib_preallocate_pages_for_all(pcm,
SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data(GFP_DMA),
SST_MIN_BUFFER, SST_MAX_BUFFER);
if (retval) {
dev_err(rtd->dev, "dma buffer allocationf fail\n");
return retval;
}
}
return retval;
}
static int sst_pcm_new(struct snd_soc_pcm_runtime *rtd)
{
struct snd_pcm *pcm = rtd->pcm;
int retval = 0;
pr_debug("sst_pcm_new called\n");
if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream ||
pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {
retval = snd_pcm_lib_preallocate_pages_for_all(pcm,
SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data(GFP_KERNEL),
SST_MIN_BUFFER, SST_MAX_BUFFER);
if (retval) {
pr_err("dma buffer allocationf fail\n");
return retval;
}
}
return retval;
}
int sst_pcm_new(struct snd_card *card, struct snd_soc_dai *dai,
struct snd_pcm *pcm)
{
int retval = 0;
pr_debug("sst_pcm_new called\n");
if (dai->driver->playback.channels_min ||
dai->driver->capture.channels_min) {
retval = snd_pcm_lib_preallocate_pages_for_all(pcm,
SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data(GFP_KERNEL),
SST_MIN_BUFFER, SST_MAX_BUFFER);
if (retval) {
pr_err("dma buffer allocationf fail\n");
return retval;
}
}
return retval;
}
static int __init snd_card_lf1000_pcm(struct snd_lf1000 *lf1000, int device, int substreams)
{
struct snd_pcm *pcm;
int err;
printk(KERN_INFO "audio: _init _pcm\n"); /*XXX*/
if ((err = snd_pcm_new(lf1000->card, "LF1000 PCM", device,
substreams, substreams, &pcm)) < 0)
return err;
lf1000->pcm = pcm;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_card_lf1000_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_lf1000_capture_ops);
pcm->private_data = lf1000;
pcm->info_flags = 0;
strcpy(pcm->name, "LF1000 PCM");
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data(GFP_KERNEL),
0, 64*1024);
return 0;
}
static int __devinit snd_sh_dac_pcm(struct snd_sh_dac *chip, int device)
{
int err;
struct snd_pcm *pcm;
err = snd_pcm_new(chip->card, "SH_DAC PCM", device, 1, 0, &pcm);
if (err < 0)
return err;
pcm->private_data = chip;
strcpy(pcm->name, "SH_DAC PCM");
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_sh_dac_pcm_ops);
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data(GFP_KERNEL),
48 * 1024,
48 * 1024);
return 0;
}
/* create a pcm device */
int snd_bcm2835_new_pcm(struct bcm2835_chip *chip)
{
struct snd_pcm *pcm;
int err;
audio_info(" .. IN\n");
mutex_init(&chip->audio_mutex);
if (mutex_lock_interruptible(&chip->audio_mutex)) {
audio_error("Interrupted whilst waiting for lock\n");
return -EINTR;
}
err = snd_pcm_new(chip->card, "bcm2835 ALSA", 0, MAX_SUBSTREAMS, 0, &pcm);
if (err < 0)
goto out;
pcm->private_data = chip;
strcpy(pcm->name, "bcm2835 ALSA");
chip->pcm = pcm;
chip->dest = AUDIO_DEST_AUTO;
chip->volume = alsa2chip(0);
chip->mute = CTRL_VOL_UNMUTE; /*disable mute on startup */
/* set operators */
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
&snd_bcm2835_playback_ops);
/* pre-allocation of buffers */
/* NOTE: this may fail */
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data(GFP_KERNEL),
snd_bcm2835_playback_hw.buffer_bytes_max,
snd_bcm2835_playback_hw.buffer_bytes_max);
out:
mutex_unlock(&chip->audio_mutex);
audio_info(" .. OUT\n");
return 0;
}
int __devinit snd_pcsp_new_pcm(struct snd_pcsp *chip)
{
int err;
err = snd_pcm_new(chip->card, "pcspeaker", 0, 1, 0, &chip->pcm);
if (err < 0)
return err;
snd_pcm_set_ops(chip->pcm, SNDRV_PCM_STREAM_PLAYBACK,
&snd_pcsp_playback_ops);
chip->pcm->private_data = chip;
chip->pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
strcpy(chip->pcm->name, "pcsp");
snd_pcm_lib_preallocate_pages_for_all(chip->pcm,
SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data
(GFP_KERNEL), PCSP_BUFFER_SIZE,
PCSP_BUFFER_SIZE);
return 0;
}
static int __devinit loopback_pcm_new(struct loopback *loopback,
int device, int substreams)
{
struct snd_pcm *pcm;
int err;
err = snd_pcm_new(loopback->card, "Loopback PCM", device,
substreams, substreams, &pcm);
if (err < 0)
return err;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &loopback_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &loopback_capture_ops);
pcm->private_data = loopback;
pcm->info_flags = 0;
strcpy(pcm->name, "Loopback PCM");
loopback->pcm[device] = pcm;
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data(GFP_KERNEL),
0, 2 * 1024 * 1024);
return 0;
}
/*
*
* Probe/remove functions
*
*/
static int __devinit minivosc_probe(struct platform_device *devptr)
{
struct snd_card *card;
struct minivosc_device *mydev;
int ret;
int nr_subdevs; // how many capture substreams we want
struct snd_pcm *pcm;
int dev = devptr->id; // from aloop-kernel.c
dbg("%s: probe", __func__);
// no need to kzalloc minivosc_device separately, if the sizeof is included here
ret = snd_card_create(index[dev], id[dev],
THIS_MODULE, sizeof(struct minivosc_device), &card);
if (ret < 0)
goto __nodev;
mydev = card->private_data;
mydev->card = card;
// MUST have mutex_init here - else crash on mutex_lock!!
mutex_init(&mydev->cable_lock);
dbg2("-- mydev %p", mydev);
sprintf(card->driver, "my_driver-%s", SND_MINIVOSC_DRIVER);
sprintf(card->shortname, "MySoundCard Audio %s", SND_MINIVOSC_DRIVER);
sprintf(card->longname, "%s", card->shortname);
snd_card_set_dev(card, &devptr->dev); // present in dummy, not in aloop though
ret = snd_device_new(card, SNDRV_DEV_LOWLEVEL, mydev, &dev_ops);
if (ret < 0)
goto __nodev;
nr_subdevs = 1; // how many capture substreams we want
// * we want 0 playback, and 1 capture substreams (4th and 5th arg) ..
ret = snd_pcm_new(card, card->driver, 0, 0, nr_subdevs, &pcm);
if (ret < 0)
goto __nodev;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &minivosc_pcm_ops); // in both aloop-kernel.c and dummy.c, after snd_pcm_new...
pcm->private_data = mydev; //here it should be dev/card struct (the one containing struct snd_card *card) - this DOES NOT end up in substream->private_data
pcm->info_flags = 0;
strcpy(pcm->name, card->shortname);
/*
trid to add this - but it crashes here:
//mydev->substream->private_data = mydev;
Well, first time real substream comes in, is in _open - so
that has to be handled there.. That is: at this point, mydev->substream is null,
and we first have a chance to set it ... in _open!
*/
ret = snd_pcm_lib_preallocate_pages_for_all(pcm,
SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data(GFP_KERNEL),
MAX_BUFFER, MAX_BUFFER); // in both aloop-kernel.c and dummy.c, after snd_pcm_set_ops...
if (ret < 0)
goto __nodev;
// * will use the snd_card_register form from aloop-kernel.c/dummy.c here..
ret = snd_card_register(card);
if (ret == 0) // or... (!ret)
{
platform_set_drvdata(devptr, card);
return 0; // success
}
__nodev: // as in aloop/dummy...
dbg("__nodev reached!!");
snd_card_free(card); // this will autocall .dev_free (= minivosc_pcm_dev_free)
return ret;
}
int snd_usb_caiaq_audio_init(struct snd_usb_caiaqdev *dev)
{
int i, ret;
dev->n_audio_in = max(dev->spec.num_analog_audio_in,
dev->spec.num_digital_audio_in) /
CHANNELS_PER_STREAM;
dev->n_audio_out = max(dev->spec.num_analog_audio_out,
dev->spec.num_digital_audio_out) /
CHANNELS_PER_STREAM;
dev->n_streams = max(dev->n_audio_in, dev->n_audio_out);
debug("dev->n_audio_in = %d\n", dev->n_audio_in);
debug("dev->n_audio_out = %d\n", dev->n_audio_out);
debug("dev->n_streams = %d\n", dev->n_streams);
if (dev->n_streams > MAX_STREAMS) {
log("unable to initialize device, too many streams.\n");
return -EINVAL;
}
ret = snd_pcm_new(dev->chip.card, dev->product_name, 0,
dev->n_audio_out, dev->n_audio_in, &dev->pcm);
if (ret < 0) {
log("snd_pcm_new() returned %d\n", ret);
return ret;
}
dev->pcm->private_data = dev;
strcpy(dev->pcm->name, dev->product_name);
memset(dev->sub_playback, 0, sizeof(dev->sub_playback));
memset(dev->sub_capture, 0, sizeof(dev->sub_capture));
memcpy(&dev->pcm_info, &snd_usb_caiaq_pcm_hardware,
sizeof(snd_usb_caiaq_pcm_hardware));
/* setup samplerates */
dev->samplerates = dev->pcm_info.rates;
switch (dev->chip.usb_id) {
case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_SESSIONIO):
case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_GUITARRIGMOBILE):
dev->samplerates |= SNDRV_PCM_RATE_192000;
/* fall thru */
case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO2DJ):
case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO4DJ):
case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO8DJ):
dev->samplerates |= SNDRV_PCM_RATE_88200;
break;
}
snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_PLAYBACK,
&snd_usb_caiaq_ops);
snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_CAPTURE,
&snd_usb_caiaq_ops);
snd_pcm_lib_preallocate_pages_for_all(dev->pcm,
SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data(GFP_KERNEL),
MAX_BUFFER_SIZE, MAX_BUFFER_SIZE);
dev->data_cb_info =
kmalloc(sizeof(struct snd_usb_caiaq_cb_info) * N_URBS,
GFP_KERNEL);
if (!dev->data_cb_info)
return -ENOMEM;
for (i = 0; i < N_URBS; i++) {
dev->data_cb_info[i].dev = dev;
dev->data_cb_info[i].index = i;
}
dev->data_urbs_in = alloc_urbs(dev, SNDRV_PCM_STREAM_CAPTURE, &ret);
if (ret < 0) {
kfree(dev->data_cb_info);
free_urbs(dev->data_urbs_in);
return ret;
}
dev->data_urbs_out = alloc_urbs(dev, SNDRV_PCM_STREAM_PLAYBACK, &ret);
if (ret < 0) {
kfree(dev->data_cb_info);
free_urbs(dev->data_urbs_in);
free_urbs(dev->data_urbs_out);
return ret;
}
return 0;
}