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@xxxxxxxxxxxxxx>
---
Notes:
Changes since v2:
- Add forgotten commit message
sound/soc/fsl/fsl_micfil.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/sound/soc/fsl/fsl_micfil.c b/sound/soc/fsl/fsl_micfil.c
index ffca56d72562d..fe3e1319b35fd 100644
--- a/sound/soc/fsl/fsl_micfil.c
+++ b/sound/soc/fsl/fsl_micfil.c
@@ -16,6 +16,7 @@
#include <linux/regmap.h>
#include <linux/sysfs.h>
#include <linux/types.h>
+#include <linux/platform_data/dma-imx.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;
--
2.30.2
