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-rw-r--r--include/sound/pcm.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index 3e0ffd21901f..4e6ad74fd8a2 100644
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -1024,6 +1024,22 @@ int snd_pcm_hw_rule_add(struct snd_pcm_runtime *runtime,
snd_pcm_hw_rule_func_t func, void *private,
int dep, ...);
+/**
+ * snd_pcm_hw_constraint_single() - Constrain parameter to a single value
+ * @runtime: PCM runtime instance
+ * @var: The hw_params variable to constrain
+ * @val: The value to constrain to
+ *
+ * Return: Positive if the value is changed, zero if it's not changed, or a
+ * negative error code.
+ */
+static inline int snd_pcm_hw_constraint_single(
+ struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var,
+ unsigned int val)
+{
+ return snd_pcm_hw_constraint_minmax(runtime, var, val, val);
+}
+
int snd_pcm_format_signed(snd_pcm_format_t format);
int snd_pcm_format_unsigned(snd_pcm_format_t format);
int snd_pcm_format_linear(snd_pcm_format_t format);