start pcm shenanigains. Still doesn't load
This commit is contained in:
parent
33dc918c7a
commit
4f435246d6
|
|
@ -9,6 +9,20 @@
|
|||
#include <linux/platform_device.h>
|
||||
#include <sound/pcm.h>
|
||||
#include <sound/core.h>
|
||||
#include <sound/initval.h>
|
||||
|
||||
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;
|
||||
|
||||
#define CARD_NAME "AES67 Virtual Soundcard"
|
||||
|
||||
module_param_array(index, int, NULL, 0444);
|
||||
MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
|
||||
module_param_array(id, charp, NULL, 0444);
|
||||
MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
|
||||
module_param_array(enable, bool, NULL, 0444);
|
||||
MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
|
||||
|
||||
MODULE_AUTHOR("Preston Baxter <preston@preston-baxter.xom>");
|
||||
MODULE_DESCRIPTION("AES67 Virtual Soundcard");
|
||||
|
|
@ -17,11 +31,15 @@ MODULE_LICENSE("GPL");
|
|||
/* Definistion of AES67 Virtual SoundCard */
|
||||
struct aes67 {
|
||||
struct snd_card *card;
|
||||
struct snd_pcm *pcm;
|
||||
struct device *dev;
|
||||
};
|
||||
|
||||
/* Destructor */
|
||||
static int snd_aes67_free(struct aes67 *virtcard)
|
||||
{
|
||||
snd_card_free(virtcard->card);
|
||||
kfree(virtcard);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -74,13 +92,17 @@ static int aes67_probe(struct platform_device *devptr)
|
|||
int err;
|
||||
|
||||
//Incredibly temporary
|
||||
if (deviceNumber > 1) {
|
||||
if (deviceNumber >= SNDRV_CARDS) {
|
||||
return -ENODEV;
|
||||
}
|
||||
if (!enable[deviceNumber]) {
|
||||
deviceNumber++;
|
||||
return -ENODEV;
|
||||
}
|
||||
deviceNumber++;
|
||||
|
||||
snd_printk(KERN_INFO "Attempting to create Soundcard for AES67\n");
|
||||
err = snd_devm_card_new(&devptr->dev, 0, "xid", THIS_MODULE,
|
||||
err = snd_devm_card_new(&devptr->dev, index[deviceNumber],
|
||||
id[deviceNumber], THIS_MODULE,
|
||||
sizeof(struct aes67), &card);
|
||||
if (err < 0)
|
||||
snd_printk(KERN_ERR "Unable to create AES67 Soundcard\n");
|
||||
|
|
@ -111,6 +133,172 @@ error:
|
|||
return err;
|
||||
}
|
||||
|
||||
/* PCM Shenaniagians */
|
||||
/* Playback definition */
|
||||
static struct snd_pcm_hardware snd_aes67_playback_hw = {
|
||||
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
|
||||
SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID),
|
||||
.formats = SNDRV_PCM_FMTBIT_S16_LE,
|
||||
.rates = SNDRV_PCM_RATE_8000_48000,
|
||||
.rate_min = 8000,
|
||||
.rate_max = 48000,
|
||||
.channels_min = 2,
|
||||
.channels_max = 2,
|
||||
.buffer_bytes_max = 32768,
|
||||
.period_bytes_min = 4096,
|
||||
.period_bytes_max = 32768,
|
||||
.periods_min = 1,
|
||||
.periods_max = 1024,
|
||||
};
|
||||
|
||||
/* Capture definition */
|
||||
static struct snd_pcm_hardware snd_aes67_capture_hw = {
|
||||
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
|
||||
SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID),
|
||||
.formats = SNDRV_PCM_FMTBIT_S16_LE,
|
||||
.rates = SNDRV_PCM_RATE_8000_48000,
|
||||
.rate_min = 8000,
|
||||
.rate_max = 48000,
|
||||
.channels_min = 2,
|
||||
.channels_max = 2,
|
||||
.buffer_bytes_max = 32768,
|
||||
.period_bytes_min = 4096,
|
||||
.period_bytes_max = 32768,
|
||||
.periods_min = 1,
|
||||
.periods_max = 1024,
|
||||
};
|
||||
|
||||
static int snd_aes67_playback_open(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct aes67 *virtcard = snd_pcm_substream_chip(substream);
|
||||
struct snd_pcm_runtime *runtime = substream->runtime;
|
||||
|
||||
runtime->hw = snd_aes67_playback_hw;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int snd_aes67_playback_close(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct aes67 *virtcard = snd_pcm_substream_chip(substream);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int snd_aes67_capture_open(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct aes67 *virtcard = snd_pcm_substream_chip(substream);
|
||||
struct snd_pcm_runtime *runtime = substream->runtime;
|
||||
|
||||
runtime->hw = snd_aes67_capture_hw;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int snd_aes67_capture_close(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct aes67 *virtcard = snd_pcm_substream_chip(substream);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int snd_aes67_pcm_hw_params(struct snd_pcm_substream *substream,
|
||||
struct snd_pcm_hw_params *hw_params)
|
||||
{
|
||||
/* the hardware-specific codes will be here */
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* hw_free callback */
|
||||
static int snd_aes67_pcm_hw_free(struct snd_pcm_substream *substream)
|
||||
{
|
||||
/* the hardware-specific codes will be here */
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int snd_aes67_pcm_prepare(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct aes67 *chip = snd_pcm_substream_chip(substream);
|
||||
struct snd_pcm_runtime *runtime = substream->runtime;
|
||||
|
||||
/* set up the hardware with the current configuration
|
||||
* for example...
|
||||
*/
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int snd_aes67_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
|
||||
{
|
||||
switch (cmd) {
|
||||
case SNDRV_PCM_TRIGGER_START:
|
||||
/* do something to start the PCM engine */
|
||||
break;
|
||||
case SNDRV_PCM_TRIGGER_STOP:
|
||||
/* do something to stop the PCM engine */
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
static snd_pcm_uframes_t aes67_get_hw_pointer(struct aes67 *virtcard)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static snd_pcm_uframes_t
|
||||
snd_aes67_pcm_pointer(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct aes67 *chip = snd_pcm_substream_chip(substream);
|
||||
unsigned int current_frame;
|
||||
|
||||
/* get the current hardware pointer */
|
||||
current_frame = aes67_get_hw_pointer(chip);
|
||||
return current_frame;
|
||||
}
|
||||
|
||||
/* operators */
|
||||
static struct snd_pcm_ops snd_aes67_playback_ops = {
|
||||
.open = snd_aes67_playback_open,
|
||||
.close = snd_aes67_playback_close,
|
||||
.hw_params = snd_aes67_pcm_hw_params,
|
||||
.hw_free = snd_aes67_pcm_hw_free,
|
||||
.prepare = snd_aes67_pcm_prepare,
|
||||
.trigger = snd_aes67_pcm_trigger,
|
||||
.pointer = snd_aes67_pcm_pointer,
|
||||
};
|
||||
|
||||
/* operators */
|
||||
static struct snd_pcm_ops snd_aes67_capture_ops = {
|
||||
.open = snd_aes67_capture_open,
|
||||
.close = snd_aes67_capture_close,
|
||||
.hw_params = snd_aes67_pcm_hw_params,
|
||||
.hw_free = snd_aes67_pcm_hw_free,
|
||||
.prepare = snd_aes67_pcm_prepare,
|
||||
.trigger = snd_aes67_pcm_trigger,
|
||||
.pointer = snd_aes67_pcm_pointer,
|
||||
};
|
||||
|
||||
static int snd_aes67_new_pcm(struct aes67 *virtcard)
|
||||
{
|
||||
struct snd_pcm *pcm;
|
||||
int err;
|
||||
|
||||
err = snd_pcm_new(virtcard->card, CARD_NAME, 0, 1, 1, &pcm);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
pcm->private_data = virtcard;
|
||||
strcpy(pcm->name, CARD_NAME);
|
||||
virtcard->pcm = pcm;
|
||||
/* set operators */
|
||||
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
|
||||
&snd_aes67_playback_ops);
|
||||
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_aes67_capture_ops);
|
||||
/*Da buffers*/
|
||||
snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, NULL, 64 * 1024,
|
||||
64 * 1024);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Power Methods */
|
||||
static int snd_aes67_suspend(struct device *pdev)
|
||||
{
|
||||
|
|
|
|||
Loading…
Reference in New Issue