linux-kernel - Re: [PATCH v2 4/5] dmaengine: sprd: Add Spreadtrum DMA configuration

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Message-ID: <20180427062405.GY6014@localhost>
Date:   Fri, 27 Apr 2018 11:54:06 +0530
From:   Vinod Koul <vinod.koul@...el.com>
To:     Baolin Wang <baolin.wang@...aro.org>
Cc:     dan.j.williams@...el.com, eric.long@...eadtrum.com,
        broonie@...nel.org, dmaengine@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 4/5] dmaengine: sprd: Add Spreadtrum DMA configuration

On Thu, Apr 19, 2018 at 10:00:49AM +0800, Baolin Wang wrote:

> +/*
> + * struct sprd_dma_config - DMA configuration structure
> + * @src_addr: the physical address where DMA slave data should be read
> + * @dst_addr: the physical address where DMA slave data should be written
> + * @fragment_len: specify one fragment transfer length
> + * @block_len: specify one block transfer length
> + * @transcation_len: specify one transcation transfer length
> + * @src_step: source transfer step
> + * @dst_step: destination transfer step
> + * @src_datawidth: source transfer data width
> + * @dst_datawidth: destination transfer data width
> + * @wrap_ptr: wrap pointer address, once the transfer address reaches the
> + * 'wrap_ptr', the next transfer address will jump to the 'wrap_to' address.
> + * @wrap_to: wrap jump to address
> + * @req_mode: specify the DMA request mode
> + * @int_mode: specify the DMA interrupt type
> + * @slave_id: slave channel requester id
> + */
> +struct sprd_dma_config {

can you please not duplicate the dma_slave_config here. If you want to save
your own values then please embed dma_slave_config here
-- 
~Vinod