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ALSA: lola - Add Lola-specific module options 

Added granularity and sample_rate_min module options.

The former controls the h/w access granularity.  As default, it's set
to the max value 32.

The latter controls the minimum sample rate in Hz, as default 16000.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2011-05-03 16:48:59 +02:00
parent 0f8f56c959
commit fe3d393eda
1 changed files with 35 additions and 10 deletions
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45
sound/pci/lola/lola.c
View File

@ -32,6 +32,7 @@
#include <sound/initval.h>
#include "lola.h"
/* Standard options */
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;
@ -43,6 +44,28 @@ MODULE_PARM_DESC(id, "ID string for Digigram Lola driver.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable Digigram Lola driver.");
/* Lola-specific options */
/* for instance use always max granularity which is compatible
* with all sample rates
*/
static int granularity[SNDRV_CARDS] = {
[0 ... (SNDRV_CARDS - 1)] = LOLA_GRANULARITY_MAX
};
/* below a sample_rate of 16kHz the analogue audio quality is NOT excellent */
static int sample_rate_min[SNDRV_CARDS] = {
[0 ... (SNDRV_CARDS - 1) ] = 16000
};
module_param_array(granularity, int, NULL, 0444);
MODULE_PARM_DESC(granularity, "Granularity value");
module_param_array(sample_rate_min, int, NULL, 0444);
MODULE_PARM_DESC(sample_rate_min, "Minimal sample rate");
/*
*/
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Digigram, Lola}}");
MODULE_DESCRIPTION("Digigram Lola driver");
@ -536,7 +559,7 @@ static int lola_dev_free(struct snd_device *device)
}
static int __devinit lola_create(struct snd_card *card, struct pci_dev *pci,
struct lola **rchip)
int dev, struct lola **rchip)
{
struct lola *chip;
int err;
@ -564,14 +587,16 @@ static int __devinit lola_create(struct snd_card *card, struct pci_dev *pci,
chip->pci = pci;
chip->irq = -1;
/* below a sample_rate of 16kHz the analogue audio quality
* is NOT excellent
*/
chip->sample_rate_min = 16000;
/* for instance use always max granularity which is compatible
* with all sample rates
*/
chip->granularity = LOLA_GRANULARITY_MAX;
chip->sample_rate_min = sample_rate_min[dev];
chip->granularity = granularity[dev];
/* FIXME */
if (chip->granularity != LOLA_GRANULARITY_MAX) {
snd_printk(KERN_WARNING SFX
"Only %d granularity is supported for now\n",
LOLA_GRANULARITY_MAX);
chip->granularity = LOLA_GRANULARITY_MAX;
}
err = pci_request_regions(pci, DRVNAME);
if (err < 0) {
@ -674,7 +699,7 @@ static int __devinit lola_probe(struct pci_dev *pci,
snd_card_set_dev(card, &pci->dev);
err = lola_create(card, pci, &chip);
err = lola_create(card, pci, dev, &chip);
if (err < 0)
goto out_free;
card->private_data = chip;