linux-kernel - RE: [PATCH 3/4] dmaengine: imx-sdma: Add multi fifo for DEV_TO

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Date: Thu, 7 Mar 2024 09:06:27 +0000
From: Joy Zou <joy.zou@....com>
To: Frank Li <frank.li@....com>, Vinod Koul <vkoul@...nel.org>, Shawn Guo
	<shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>, Pengutronix
 Kernel Team <kernel@...gutronix.de>, Fabio Estevam <festevam@...il.com>,
	dl-linux-imx <linux-imx@....com>
CC: "dmaengine@...r.kernel.org" <dmaengine@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "imx@...ts.linux.dev" <imx@...ts.linux.dev>
Subject: RE: [PATCH 3/4] dmaengine: imx-sdma: Add multi fifo for DEV_TO_DEV


> -----Original Message-----
> From: Frank Li <frank.li@....com>
> Sent: 2024年3月4日 12:33
> To: Vinod Koul <vkoul@...nel.org>; Shawn Guo <shawnguo@...nel.org>;
> Sascha Hauer <s.hauer@...gutronix.de>; Pengutronix Kernel Team
> <kernel@...gutronix.de>; Fabio Estevam <festevam@...il.com>;
> dl-linux-imx <linux-imx@....com>
> Cc: dmaengine@...r.kernel.org; linux-arm-kernel@...ts.infradead.org;
> linux-kernel@...r.kernel.org; imx@...ts.linux.dev; Frank Li
> <frank.li@....com>; Joy Zou <joy.zou@....com>
> Subject: [PATCH 3/4] dmaengine: imx-sdma: Add multi fifo for DEV_TO_DEV
> 
> From: Joy Zou <joy.zou@....com>
> 
> Support multi fifo for DEV_TO_DEV.
> 
> Signed-off-by: Joy Zou <joy.zou@....com>
> Signed-off-by: Frank Li <Frank.Li@....com>
Reviewed-by: Joy Zou <joy.zou@....com>
BR
Joy Zou
> ---
>  drivers/dma/imx-sdma.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index
> ef45420485dac..9b133990afa39 100644
> --- a/drivers/dma/imx-sdma.c
> +++ b/drivers/dma/imx-sdma.c
> @@ -169,6 +169,8 @@
>  #define SDMA_WATERMARK_LEVEL_SPDIF	BIT(10)
>  #define SDMA_WATERMARK_LEVEL_SP		BIT(11)
>  #define SDMA_WATERMARK_LEVEL_DP		BIT(12)
> +#define SDMA_WATERMARK_LEVEL_SD		BIT(13)
> +#define SDMA_WATERMARK_LEVEL_DD		BIT(14)
>  #define SDMA_WATERMARK_LEVEL_HWML	(0xFF << 16)
>  #define SDMA_WATERMARK_LEVEL_LWE	BIT(28)
>  #define SDMA_WATERMARK_LEVEL_HWE	BIT(29)
> @@ -1259,6 +1261,11 @@ static void
> sdma_set_watermarklevel_for_p2p(struct sdma_channel *sdmac)
>  		sdmac->watermark_level |= SDMA_WATERMARK_LEVEL_DP;
> 
>  	sdmac->watermark_level |= SDMA_WATERMARK_LEVEL_CONT;
> +
> +	if (sdmac->n_fifos_src > 1)
> +		sdmac->watermark_level |= SDMA_WATERMARK_LEVEL_SD;
> +	if (sdmac->n_fifos_dst > 1)
> +		sdmac->watermark_level |= SDMA_WATERMARK_LEVEL_DD;
>  }
> 
>  static void sdma_set_watermarklevel_for_sais(struct sdma_channel *sdmac)
> 
> --
> 2.34.1