Re: [alsa-devel] How do I tell ALSA that my driver supports every possible sample rate?

Takashi Iwai wrote:

...

#define SNDRV_PCM_RATE_ALL (SNDRV_PCM_RATE_8000_192000 | SNDRV_PCM_RATES_5512)

I'd prefer 5512_19200. The word "ALL" may vary in future.

That's the point. It's supposed to indicate all sample rates no matter what they are or will be. However, that may be a moot point ...

Anyway, the bits SND_PCM_RATES_[0-9]* are ignored when _CONTINUOUS or _KNOT is passed. Only the values in rate_min/rate_max fields are referred as actual min/max rates.

Ah! I wish this stuff were documented in the source files.

So can I do this?

static const struct snd_pcm_hardware mpc86xx_pcm_hardware = {

.rates = SNDRV_PCM_RATE_CONTINUOUS, .rate_min = 1, .rate_max = (unsigned int) -1,