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authorJaroslav Kysela <perex@perex.cz>2008-06-26 08:51:31 +0200
committerJaroslav Kysela <perex@perex.cz>2008-06-26 08:53:05 +0200
commiteabe3228a80728a21f871ccc86c72c170ca1a2dc (patch)
tree60bdd85120b507f163471604b14de693a6eb7d2a /include/sound
parenta1855d802fb62718192eb7e180161b08adff4e73 (diff)
[ALSA] Revert "alsa: add annotations to bitwise type snd_pcm_hw_param_t"
This reverts commit 36b34d2437104f323e09d7c6af6451d3c0b9c0cd. From: Al Viro <viro@ZenIV.linux.org.uk> WIW, *all* this stuff is not bitwise at all. For crying out loud, half of these types are routinely used as array indices and loop variables... If anything, we want a different set of allowed operations - subtraction between elements of type (yielding integer), addition/subtraction of integer types not bigger than ours (yielding our type), comparisons, assignments (=, +=, -=, passing to function as argument, return from function, initializers) and second/third arguments in ?:. With 0 *not* being allowed as a constant of such type. It's not bitwise; we may use the same infrastructure in sparse, but it should be a separate class of types (__attribute__((affine))). dma_addr_t is another candidate for the same treatment, but there we'll need helpers for conversions to hw-acceptable form (dma_to_le32(), etc.) and gradual conversion of drivers. ALSA ones and pm mess are absolutely straightforward cases, though. Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'include/sound')
-rw-r--r--include/sound/asound.h12
-rw-r--r--include/sound/pcm.h32
2 files changed, 20 insertions, 24 deletions
diff --git a/include/sound/asound.h b/include/sound/asound.h
index 0309da2f11d..3eaf155b850 100644
--- a/include/sound/asound.h
+++ b/include/sound/asound.h
@@ -302,8 +302,6 @@ typedef int __bitwise snd_pcm_hw_param_t;
#define SNDRV_PCM_HW_PARAM_SUBFORMAT ((__force snd_pcm_hw_param_t) 2) /* Subformat */
#define SNDRV_PCM_HW_PARAM_FIRST_MASK SNDRV_PCM_HW_PARAM_ACCESS
#define SNDRV_PCM_HW_PARAM_LAST_MASK SNDRV_PCM_HW_PARAM_SUBFORMAT
-#define SNDRV_PCM_HW_PARAM_MASK_INDEX(var) \
- ((__force int)(var) - (__force int)SNDRV_PCM_HW_PARAM_FIRST_MASK)
#define SNDRV_PCM_HW_PARAM_SAMPLE_BITS ((__force snd_pcm_hw_param_t) 8) /* Bits per sample */
#define SNDRV_PCM_HW_PARAM_FRAME_BITS ((__force snd_pcm_hw_param_t) 9) /* Bits per frame */
@@ -319,8 +317,6 @@ typedef int __bitwise snd_pcm_hw_param_t;
#define SNDRV_PCM_HW_PARAM_TICK_TIME ((__force snd_pcm_hw_param_t) 19) /* Approx tick duration in us */
#define SNDRV_PCM_HW_PARAM_FIRST_INTERVAL SNDRV_PCM_HW_PARAM_SAMPLE_BITS
#define SNDRV_PCM_HW_PARAM_LAST_INTERVAL SNDRV_PCM_HW_PARAM_TICK_TIME
-#define SNDRV_PCM_HW_PARAM_INTERVAL_INDEX(var) \
- ((__force int)(var) - (__force int)SNDRV_PCM_HW_PARAM_FIRST_INTERVAL)
#define SNDRV_PCM_HW_PARAMS_NORESAMPLE (1<<0) /* avoid rate resampling */
@@ -340,11 +336,11 @@ struct snd_mask {
struct snd_pcm_hw_params {
unsigned int flags;
- struct snd_mask masks[
- SNDRV_PCM_HW_PARAM_MASK_INDEX(SNDRV_PCM_HW_PARAM_LAST_MASK) + 1];
+ struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK -
+ SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
struct snd_mask mres[5]; /* reserved masks */
- struct snd_interval intervals[
- SNDRV_PCM_HW_PARAM_INTERVAL_INDEX(SNDRV_PCM_HW_PARAM_LAST_INTERVAL) + 1];
+ struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
+ SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
struct snd_interval ires[9]; /* reserved intervals */
unsigned int rmask; /* W: requested masks */
unsigned int cmask; /* R: changed masks */
diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index 5315b53f9b0..51d58ccda2d 100644
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -209,10 +209,10 @@ struct snd_pcm_hw_rule {
};
struct snd_pcm_hw_constraints {
- struct snd_mask masks[
- SNDRV_PCM_HW_PARAM_MASK_INDEX(SNDRV_PCM_HW_PARAM_LAST_MASK) + 1];
- struct snd_interval intervals[
- SNDRV_PCM_HW_PARAM_INTERVAL_INDEX(SNDRV_PCM_HW_PARAM_LAST_INTERVAL) + 1];
+ struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK -
+ SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
+ struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
+ SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
unsigned int rules_num;
unsigned int rules_all;
struct snd_pcm_hw_rule *rules;
@@ -221,13 +221,13 @@ struct snd_pcm_hw_constraints {
static inline struct snd_mask *constrs_mask(struct snd_pcm_hw_constraints *constrs,
snd_pcm_hw_param_t var)
{
- return &constrs->masks[SNDRV_PCM_HW_PARAM_MASK_INDEX(var)];
+ return &constrs->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK];
}
static inline struct snd_interval *constrs_interval(struct snd_pcm_hw_constraints *constrs,
snd_pcm_hw_param_t var)
{
- return &constrs->intervals[SNDRV_PCM_HW_PARAM_INTERVAL_INDEX(var)];
+ return &constrs->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL];
}
struct snd_ratnum {
@@ -761,40 +761,40 @@ static inline void snd_pcm_trigger_done(struct snd_pcm_substream *substream,
substream->runtime->trigger_master = master;
}
-static inline int hw_is_mask(snd_pcm_hw_param_t var)
+static inline int hw_is_mask(int var)
{
- return (__force int)var >= (__force int)SNDRV_PCM_HW_PARAM_FIRST_MASK &&
- (__force int)var <= (__force int)SNDRV_PCM_HW_PARAM_LAST_MASK;
+ return var >= SNDRV_PCM_HW_PARAM_FIRST_MASK &&
+ var <= SNDRV_PCM_HW_PARAM_LAST_MASK;
}
-static inline int hw_is_interval(snd_pcm_hw_param_t var)
+static inline int hw_is_interval(int var)
{
- return (__force int)var >= (__force int)SNDRV_PCM_HW_PARAM_FIRST_INTERVAL &&
- (__force int)var <= (__force int)SNDRV_PCM_HW_PARAM_LAST_INTERVAL;
+ return var >= SNDRV_PCM_HW_PARAM_FIRST_INTERVAL &&
+ var <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL;
}
static inline struct snd_mask *hw_param_mask(struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var)
{
- return &params->masks[SNDRV_PCM_HW_PARAM_MASK_INDEX(var)];
+ return &params->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK];
}
static inline struct snd_interval *hw_param_interval(struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var)
{
- return &params->intervals[SNDRV_PCM_HW_PARAM_INTERVAL_INDEX(var)];
+ return &params->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL];
}
static inline const struct snd_mask *hw_param_mask_c(const struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var)
{
- return &params->masks[SNDRV_PCM_HW_PARAM_MASK_INDEX(var)];
+ return &params->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK];
}
static inline const struct snd_interval *hw_param_interval_c(const struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var)
{
- return &params->intervals[SNDRV_PCM_HW_PARAM_INTERVAL_INDEX(var)];
+ return &params->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL];
}
#define params_access(p) snd_mask_min(hw_param_mask((p), SNDRV_PCM_HW_PARAM_ACCESS))