linux-kernel - Re: [PATCH v4] dma: Add Xilinx AXI Direct Memory Access Engine driver support

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Date:	Mon, 20 Oct 2014 21:37:14 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Srikanth Thokala <sthokal@...inx.com>, vinod.koul@...el.com,
	dan.j.williams@...el.com, michals@...inx.com,
	grant.likely@...aro.org, robh+dt@...nel.org,
	devicetree@...r.kernel.org, svemula@...inx.com,
	linux-kernel@...r.kernel.org, anirudh@...inx.com,
	dmaengine@...r.kernel.org, appanad@...inx.com
Subject: Re: [PATCH v4] dma: Add Xilinx AXI Direct Memory Access Engine driver support

On Wednesday 15 October 2014 17:30:36 Srikanth Thokala wrote:
> @@ -15,6 +15,9 @@
>  #include <linux/dma-mapping.h>
>  #include <linux/dmaengine.h>
>  
> +/* Number of AXI DMA APP Words */
> +#define XILINX_DMA_NUM_APP_WORDS       5
> +
>  /**
>   * struct xilinx_vdma_config - VDMA Configuration structure
>   * @frm_dly: Frame delay
> @@ -41,7 +44,21 @@ struct xilinx_vdma_config {
>         int ext_fsync;
>  };
>  
> +/**
> + * struct xilinx_dma_config - DMA Configuration structure
> + * @coalesc: Interrupt coalescing threshold
> + * @delay: Delay counter
> + * @reset: Reset Channel
> + */
> +struct xilinx_dma_config {
> +       int coalesc;
> +       int delay;
> +       int reset;
> +};
> +
>  int xilinx_vdma_channel_set_config(struct dma_chan *dchan,
>                                         struct xilinx_vdma_config *cfg);
> +int xilinx_dma_channel_set_config(struct dma_chan *dchan,
> +                                       struct xilinx_dma_config *cfg);
>  

You add this to a global header file, but I don't see any uses outside
of the driver itself. Please move all of this into the driver itself
and remove the header file.

	Arnd
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