ALSA: Add params_width() helpers

Add helpers for obtaining the width of a format directly from params
since this is expected to become a common operation in ASoC.

Signed-off-by: Mark Brown <broonie@linaro.org>
Reviewed-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 12 insertions, 0 deletions

diff --git a/include/sound/pcm_params.h b/include/sound/pcm_params.h
index 37ae12e0ab06..6b1c78f05fab 100644
--- a/include/sound/pcm_params.h
+++ b/include/sound/pcm_params.h
@@ -354,4 +354,16 @@ params_period_bytes(const struct snd_pcm_hw_params *p)
                 params_channels(p)) / 8;
 }
 
+static inline int
+params_width(const struct snd_pcm_hw_params *p)
+{
+        return snd_pcm_format_width(params_format(p));
+}
+
+static inline int
+params_physical_width(const struct snd_pcm_hw_params *p)
+{
+        return snd_pcm_format_physical_width(params_format(p));
+}
+
 #endif /* __SOUND_PCM_PARAMS_H */