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ALSA: pcm: Add a standalone version of snd_pcm_limit_hw_rates

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It can be useful to derive min/max rates of a snd_pcm_hardware without
having a snd_pcm_runtime, such as before constructing an ASoC DAI link.

Create a new helper that takes a pointer to a snd_pcm_hardware directly,
and refactor the original function as a wrapper around it, to avoid
needing to update any call sites.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20200305051143.60691-2-samuel@sholland.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Samuel Holland
2020-03-04 23:11:41 -06:00
committed by Mark Brown
parent 6e02feb0d2
commit 4769bfb9da
2 changed files with 17 additions and 10 deletions
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9
include/sound/pcm.h
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@@ -1127,7 +1127,14 @@ snd_pcm_kernel_readv(struct snd_pcm_substream *substream,
return __snd_pcm_lib_xfer(substream, bufs, false, frames, true);
}
int snd_pcm_limit_hw_rates(struct snd_pcm_runtime *runtime);
int snd_pcm_hw_limit_rates(struct snd_pcm_hardware *hw);
static inline int
snd_pcm_limit_hw_rates(struct snd_pcm_runtime *runtime)
{
return snd_pcm_hw_limit_rates(&runtime->hw);
}
unsigned int snd_pcm_rate_to_rate_bit(unsigned int rate);
unsigned int snd_pcm_rate_bit_to_rate(unsigned int rate_bit);
unsigned int snd_pcm_rate_mask_intersect(unsigned int rates_a,