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authorOlivier Moysan <olivier.moysan@st.com>2019-05-06 14:54:11 +0200
committerMark Brown <broonie@kernel.org>2019-05-08 17:13:38 +0900
commit4fc19fffaaf87335aafaeb059a561ef91aa6031c (patch)
treeff26237dd3a9413702fbbe8882cfcd9c86dca5f0
parent939507f2779836919271ba0311723d1001d3993b (diff)
ASoC: stm32: i2s: update pcm hardware constraints
- Set period minimum size. Ensure at least 5ms period up to 48kHz/16 bits to prevent underrun/overrun. - Remove MDMA constraints on period maximum size and set period maximum to half the buffer maximum size. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
-rw-r--r--sound/soc/stm/stm32_i2s.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/sound/soc/stm/stm32_i2s.c b/sound/soc/stm/stm32_i2s.c
index 97d5e9901a0e..8ee697ff1f86 100644
--- a/sound/soc/stm/stm32_i2s.c
+++ b/sound/soc/stm/stm32_i2s.c
@@ -731,7 +731,8 @@ static const struct snd_soc_dai_ops stm32_i2s_pcm_dai_ops = {
static const struct snd_pcm_hardware stm32_i2s_pcm_hw = {
.info = SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_MMAP,
.buffer_bytes_max = 8 * PAGE_SIZE,
- .period_bytes_max = 2048,
+ .period_bytes_min = 1024,
+ .period_bytes_max = 4 * PAGE_SIZE,
.periods_min = 2,
.periods_max = 8,
};