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Diffstat (limited to 'sound/core/pcm_native.c')
-rw-r--r--sound/core/pcm_native.c55
1 files changed, 53 insertions, 2 deletions
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index f610b08f5a2b..f5ff00f99788 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -479,6 +479,7 @@ static int fixup_unreferenced_params(struct snd_pcm_substream *substream,
{
const struct snd_interval *i;
const struct snd_mask *m;
+ struct snd_mask *m_rw;
int err;
if (!params->msbits) {
@@ -487,6 +488,22 @@ static int fixup_unreferenced_params(struct snd_pcm_substream *substream,
params->msbits = snd_interval_value(i);
}
+ if (params->msbits) {
+ m = hw_param_mask_c(params, SNDRV_PCM_HW_PARAM_FORMAT);
+ if (snd_mask_single(m)) {
+ snd_pcm_format_t format = (__force snd_pcm_format_t)snd_mask_min(m);
+
+ if (snd_pcm_format_linear(format) &&
+ snd_pcm_format_width(format) != params->msbits) {
+ m_rw = hw_param_mask(params, SNDRV_PCM_HW_PARAM_SUBFORMAT);
+ snd_mask_reset(m_rw,
+ (__force unsigned)SNDRV_PCM_SUBFORMAT_MSBITS_MAX);
+ if (snd_mask_empty(m_rw))
+ return -EINVAL;
+ }
+ }
+ }
+
if (!params->rate_den) {
i = hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE);
if (snd_interval_single(i)) {
@@ -2483,6 +2500,41 @@ static int snd_pcm_hw_rule_buffer_bytes_max(struct snd_pcm_hw_params *params,
return snd_interval_refine(hw_param_interval(params, rule->var), &t);
}
+static int snd_pcm_hw_rule_subformats(struct snd_pcm_hw_params *params,
+ struct snd_pcm_hw_rule *rule)
+{
+ struct snd_mask *sfmask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_SUBFORMAT);
+ struct snd_mask *fmask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
+ u32 *subformats = rule->private;
+ snd_pcm_format_t f;
+ struct snd_mask m;
+
+ snd_mask_none(&m);
+ /* All PCMs support at least the default STD subformat. */
+ snd_mask_set(&m, (__force unsigned)SNDRV_PCM_SUBFORMAT_STD);
+
+ pcm_for_each_format(f) {
+ if (!snd_mask_test(fmask, (__force unsigned)f))
+ continue;
+
+ if (f == SNDRV_PCM_FORMAT_S32_LE && *subformats)
+ m.bits[0] |= *subformats;
+ else if (snd_pcm_format_linear(f))
+ snd_mask_set(&m, (__force unsigned)SNDRV_PCM_SUBFORMAT_MSBITS_MAX);
+ }
+
+ return snd_mask_refine(sfmask, &m);
+}
+
+static int snd_pcm_hw_constraint_subformats(struct snd_pcm_runtime *runtime,
+ unsigned int cond, u32 *subformats)
+{
+ return snd_pcm_hw_rule_add(runtime, cond, -1,
+ snd_pcm_hw_rule_subformats, (void *)subformats,
+ SNDRV_PCM_HW_PARAM_SUBFORMAT,
+ SNDRV_PCM_HW_PARAM_FORMAT, -1);
+}
+
static int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
@@ -2634,8 +2686,7 @@ static int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream)
if (err < 0)
return err;
- err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_SUBFORMAT,
- PARAM_MASK_BIT(SNDRV_PCM_SUBFORMAT_STD));
+ err = snd_pcm_hw_constraint_subformats(runtime, 0, &hw->subformats);
if (err < 0)
return err;