summaryrefslogtreecommitdiff
path: root/sound/core
diff options
context:
space:
mode:
authorTakashi Iwai <tiwai@suse.de>2015-02-05 09:08:35 +0300
committerTakashi Iwai <tiwai@suse.de>2015-02-05 09:08:35 +0300
commita3ae255e3729c1bb4507412ea29be804f703d44c (patch)
treeedd1ca577dad5a0d701ae111519eaefa60896f98 /sound/core
parent3fe9cf390f6dc84f76b112b0a660967a84f9a81b (diff)
parent16ca41c6cc904d7eb9e92afc5f576e375c314f90 (diff)
downloadlinux-a3ae255e3729c1bb4507412ea29be804f703d44c.tar.xz
Merge tag 'asoc-v3.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next
ASoC: Updates for v3.20 More updates for v3.20: - Lots of refactoring from Lars-Peter Clausen, moving drivers to more data driven initialization and rationalizing a lot of DAPM usage. - Much improved handling of CDCLK clocks on Samsung I2S controllers. - Lots of driver specific cleanups and feature improvements. - CODEC support for TI PCM514x and TLV320AIC3104 devices. - Board support for Tegra systems with Realtek RT5677. Conflicts: sound/soc/intel/sst-mfld-platform-pcm.c
Diffstat (limited to 'sound/core')
-rw-r--r--sound/core/pcm_lib.c85
1 files changed, 85 insertions, 0 deletions
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index db05e04d0070..ffd656012ab8 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -1015,6 +1015,60 @@ int snd_interval_list(struct snd_interval *i, unsigned int count,
EXPORT_SYMBOL(snd_interval_list);
+/**
+ * snd_interval_ranges - refine the interval value from the list of ranges
+ * @i: the interval value to refine
+ * @count: the number of elements in the list of ranges
+ * @ranges: the ranges list
+ * @mask: the bit-mask to evaluate
+ *
+ * Refines the interval value from the list of ranges.
+ * When mask is non-zero, only the elements corresponding to bit 1 are
+ * evaluated.
+ *
+ * Return: Positive if the value is changed, zero if it's not changed, or a
+ * negative error code.
+ */
+int snd_interval_ranges(struct snd_interval *i, unsigned int count,
+ const struct snd_interval *ranges, unsigned int mask)
+{
+ unsigned int k;
+ struct snd_interval range_union;
+ struct snd_interval range;
+
+ if (!count) {
+ snd_interval_none(i);
+ return -EINVAL;
+ }
+ snd_interval_any(&range_union);
+ range_union.min = UINT_MAX;
+ range_union.max = 0;
+ for (k = 0; k < count; k++) {
+ if (mask && !(mask & (1 << k)))
+ continue;
+ snd_interval_copy(&range, &ranges[k]);
+ if (snd_interval_refine(&range, i) < 0)
+ continue;
+ if (snd_interval_empty(&range))
+ continue;
+
+ if (range.min < range_union.min) {
+ range_union.min = range.min;
+ range_union.openmin = 1;
+ }
+ if (range.min == range_union.min && !range.openmin)
+ range_union.openmin = 0;
+ if (range.max > range_union.max) {
+ range_union.max = range.max;
+ range_union.openmax = 1;
+ }
+ if (range.max == range_union.max && !range.openmax)
+ range_union.openmax = 0;
+ }
+ return snd_interval_refine(i, &range_union);
+}
+EXPORT_SYMBOL(snd_interval_ranges);
+
static int snd_interval_step(struct snd_interval *i, unsigned int step)
{
unsigned int n;
@@ -1221,6 +1275,37 @@ int snd_pcm_hw_constraint_list(struct snd_pcm_runtime *runtime,
EXPORT_SYMBOL(snd_pcm_hw_constraint_list);
+static int snd_pcm_hw_rule_ranges(struct snd_pcm_hw_params *params,
+ struct snd_pcm_hw_rule *rule)
+{
+ struct snd_pcm_hw_constraint_ranges *r = rule->private;
+ return snd_interval_ranges(hw_param_interval(params, rule->var),
+ r->count, r->ranges, r->mask);
+}
+
+
+/**
+ * snd_pcm_hw_constraint_ranges - apply list of range constraints to a parameter
+ * @runtime: PCM runtime instance
+ * @cond: condition bits
+ * @var: hw_params variable to apply the list of range constraints
+ * @r: ranges
+ *
+ * Apply the list of range constraints to an interval parameter.
+ *
+ * Return: Zero if successful, or a negative error code on failure.
+ */
+int snd_pcm_hw_constraint_ranges(struct snd_pcm_runtime *runtime,
+ unsigned int cond,
+ snd_pcm_hw_param_t var,
+ const struct snd_pcm_hw_constraint_ranges *r)
+{
+ return snd_pcm_hw_rule_add(runtime, cond, var,
+ snd_pcm_hw_rule_ranges, (void *)r,
+ var, -1);
+}
+EXPORT_SYMBOL(snd_pcm_hw_constraint_ranges);
+
static int snd_pcm_hw_rule_ratnums(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule)
{