Unverified Commit 863137f0 authored May 06, 2019 by Olivier Moysan Committed by Mark Brown May 06, 2019

ASoC: stm32: spdifrx: 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>

parent ecb2795c

sound/soc/stm/stm32_spdifrx.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -845,7 +845,8 @@ static struct snd_soc_dai_driver stm32_spdifrx_dai[] = {
		static const struct snd_pcm_hardware stm32_spdifrx_pcm_hw = {
		.info = SNDRV_PCM_INFO_INTERLEAVED \| SNDRV_PCM_INFO_MMAP,
		.buffer_bytes_max = 8 * PAGE_SIZE,
		.period_bytes_max = 2048, /* MDMA constraint */
		.period_bytes_min = 1024,
		.period_bytes_max = 4 * PAGE_SIZE,
		.periods_min = 2,
		.periods_max = 8,
		};

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