ASoC: generic-dmaengine-pcm: Use SNDRV_DMA_TYPE_DEV_IRAM as default

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>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c
index ee0790337ec97d9eefddd6fc78902e9024e46f37..51fded3640a5cfed32530d971772a32e433bfdbd 100644 (file)
--- a/sound/soc/soc-generic-dmaengine-pcm.c
+++ b/sound/soc/soc-generic-dmaengine-pcm.c
@@ -228,7 +228,7 @@ 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),
                                prealloc_buffer_size,
                                max_buffer_size);