Re: [PATCH] dmaengine: at_hdmac: add DMA slave transfers

From: Dan Williams
Date: Thu Jul 23 2009 - 13:13:39 EST


On Wed, Jul 22, 2009 at 11:04 AM, Nicolas Ferre<nicolas.ferre@xxxxxxxxx> wrote:
> This patch for at_hdmac adds the slave transfers capability to the Atmel DMA
> controller available on some AT91 SOCs. This allow peripheral to memory and
> memory to peripheral transfers with hardware handshaking.
>
> Slave structure for controller specific information is passed through channel
> private data. This at_dma_slave structure is defined in at_hdmac.h header file
> and relative hardware definition are moved to this file from at_hdmac_regs.h.
> Doing this we allow the channel configuration from platform definition code.
>
> This work is intensively based on dw_dmac and several slave implementations.
>
> Signed-off-by: Nicolas Ferre <nicolas.ferre@xxxxxxxxx>
> ---

Seems straightforward and self contained, applied. Just curious which
drivers will take advantage of this slave capability? As it stands I
do not see any in-tree users of at_hdmac beyond dmatest?

Thanks,
Dan
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/