@@ -16,6 +16,7 @@
#include <linux/regmap.h>
#include <linux/sysfs.h>
#include <linux/types.h>
+#include <linux/dma/imx-dma.h>
#include <sound/dmaengine_pcm.h>
#include <sound/pcm.h>
#include <sound/soc.h>
@@ -35,6 +36,7 @@ struct fsl_micfil {
struct clk *busclk;
struct clk *mclk;
struct snd_dmaengine_dai_dma_data dma_params_rx;
+ struct sdma_peripheral_config sdmacfg;
unsigned int dataline;
char name[32];
int irq[MICFIL_IRQ_LINES];
@@ -324,6 +326,10 @@ static int fsl_micfil_hw_params(struct snd_pcm_substream *substream,
return ret;
}
+ micfil->dma_params_rx.peripheral_config = &micfil->sdmacfg;
+ micfil->dma_params_rx.peripheral_size = sizeof(micfil->sdmacfg);
+ micfil->sdmacfg.n_fifos_src = channels;
+ micfil->sdmacfg.sw_done = true;
micfil->dma_params_rx.maxburst = channels * MICFIL_DMA_MAXBURST_RX;
return 0;
The micfil hardware provides the microphone data on multiple successive FIFO registers, one register per stereo pair. Also to work properly the SDMA_DONE0_CONFIG_DONE_SEL bit in the SDMA engines SDMA_DONE0_CONFIG register must be set. This patch provides the necessary information to the SDMA engine driver. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> --- Notes: Changes since v3: - Fix include name Changes since v2: - Add forgotten commit message sound/soc/fsl/fsl_micfil.c | 6 ++++++ 1 file changed, 6 insertions(+)