@@ -1415,6 +1415,15 @@ static inline u64 pcm_format_to_bits(snd_pcm_format_t pcm_format)
return 1ULL << (__force int) pcm_format;
}
+/**
+ * pcm_for_each_format - helper to iterate for each format type
+ * @f: the iterator variable in snd_pcm_format_t type
+ */
+#define pcm_for_each_format(f) \
+ for ((f) = SNDRV_PCM_FORMAT_FIRST; \
+ (__force int)(f) <= (__force int)SNDRV_PCM_FORMAT_LAST; \
+ (f) = (__force snd_pcm_format_t)((__force int)(f) + 1))
+
/* printk helpers */
#define pcm_err(pcm, fmt, args...) \
dev_err((pcm)->card->dev, fmt, ##args)
@@ -133,6 +133,13 @@ static inline int snd_mask_test(const struct snd_mask *mask, unsigned int val)
return mask->bits[MASK_OFS(val)] & MASK_BIT(val);
}
+/* Most of drivers need only this one */
+static inline int snd_mask_test_format(const struct snd_mask *mask,
+ snd_pcm_format_t format)
+{
+ return snd_mask_test(mask, (__force unsigned int)format);
+}
+
static inline int snd_mask_single(const struct snd_mask *mask)
{
int i, c = 0;
snd_pcm_format_t is a strong-typed integer and requires the explicit cast with __force if converted or compared with a normal integer value. Since most of use cases do iterate over all formats and test / set the mask, provide a couple of new helper macros that do the explicit cast. Signed-off-by: Takashi Iwai <tiwai@suse.de> --- include/sound/pcm.h | 9 +++++++++ include/sound/pcm_params.h | 7 +++++++ 2 files changed, 16 insertions(+)