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Commit c14e2591 authored by Alexandre Belloni's avatar Alexandre Belloni Committed by Mark Brown
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ASoC: atmel-pcm-dma: increase buffer_bytes_max 



atmel-pcm-dma is not limited to a buffer size of 64kB like atmel-pcm-pdc.
Increase buffer_bytes_max to 512kB to allow for higher bit rates (i.e. 32bps at
192kHz) to work correctly. By default, keep the prealloc at 64kB.

Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 488cb533

sound/soc/atmel/atmel-pcm-dma.c

+2 −2
Original line number Diff line number Diff line
@@ -54,7 +54,7 @@ static const struct snd_pcm_hardware atmel_pcm_dma_hardware = { 
	.period_bytes_max	= 2 * 0xffff,	/* if 2 bytes format */

	.periods_min		= 8,

	.periods_max		= 1024,		/* no limit */

	.buffer_bytes_max	= ATMEL_SSC_DMABUF_SIZE,

	.buffer_bytes_max	= 512 * 1024,

};



/**
@@ -119,7 +119,7 @@ static int atmel_pcm_configure_dma(struct snd_pcm_substream *substream, 
static const struct snd_dmaengine_pcm_config atmel_dmaengine_pcm_config = {

	.prepare_slave_config = atmel_pcm_configure_dma,

	.pcm_hardware = &atmel_pcm_dma_hardware,

	.prealloc_buffer_size = ATMEL_SSC_DMABUF_SIZE,

	.prealloc_buffer_size = 64 * 1024,

};



int atmel_pcm_dma_platform_register(struct device *dev)