[PATCH v4 12/21] ASoC: fsl_micfil: add multi fifo support

[Shengjiu Wang]

On Thu, Apr 7, 2022 at 4:49 PM Sascha Hauer <s.hauer at pengutronix.de> wrote:

> 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 at pengutronix.de>
>

Acked-by: Shengjiu Wang <shengjiu.wang at gmail.com>

Best regards
Wang Shengjiu

> ---
>
> 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(+)
>
> diff --git a/sound/soc/fsl/fsl_micfil.c b/sound/soc/fsl/fsl_micfil.c
> index 4656a18a03e45..56df916ad55f2 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/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;
> --
> 2.30.2
>
>