When allocating memory space for DMA buffer, use on-chip internal SRAM as default choice to save power. Since the core would allocate memory from traditional external memory if iram allocation failed, we don't need to worry about any side effect.
Signed-off-by: Nicolin Chen b42378@freescale.com ---
* ! This patch should be applied to a branch containing the patch -- ALSA: * Add SoC on-chip internal ram support for DMA buffer allocation.
Changelog v1->v2: * Use iram memory space as default
sound/soc/soc-generic-dmaengine-pcm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c index e29ec3c..e5b61e3 100644 --- a/sound/soc/soc-generic-dmaengine-pcm.c +++ b/sound/soc/soc-generic-dmaengine-pcm.c @@ -163,7 +163,7 @@ static int dmaengine_pcm_new(struct snd_soc_pcm_runtime *rtd) }
ret = snd_pcm_lib_preallocate_pages(substream, - SNDRV_DMA_TYPE_DEV, + SNDRV_DMA_TYPE_DEV_IRAM, dmaengine_dma_dev(pcm, substream), config->prealloc_buffer_size, config->pcm_hardware->buffer_bytes_max);