[alsa-devel] ASOC: Best way to get private data from machine driver to the other drivers?

Timur Tabi timur at freescale.com
Tue Oct 2 18:48:17 CEST 2007

Liam Girdwood wrote:
> On Mon, 2007-10-01 at 16:49 -0500, Timur Tabi wrote:
>> Liam Girdwood wrote:
>>> Could you have a look at the V2 i.mx31 SSI driver and let me know if we
>>> need further changes for better dts support.
>> I'm trying to port the CS4270 codec driver (it's easier) to ASOC v2, and I see 
>> that you don't have snd_pcm_rate_to_rate_bit().  Where did it go?
> We never had a snd_pcm_rate_to_rate_bit() in the ASoC code, perhaps you
> mean something else ?

In may not be part of ASoC, but it's part of ALSA, and I need it.  It's not 
just in your repository.


  * snd_pcm_rate_to_rate_bit - converts sample rate to SNDRV_PCM_RATE_xxx bit
  * @rate: the sample rate to convert
  * Returns the SNDRV_PCM_RATE_xxx flag that corresponds to the given rate, or
  * SNDRV_PCM_RATE_KNOT for an unknown rate.
unsigned int snd_pcm_rate_to_rate_bit(unsigned int rate)
	unsigned int i;

	for (i = 0; i < snd_pcm_known_rates.count; i++)
		if (snd_pcm_known_rates.list[i] == rate)
			return 1u << i;

Timur Tabi
Linux Kernel Developer @ Freescale

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