[PATCH v6 04/10] DMA: PL330: Add device tree support

Boojin Kim boojin.kim at samsung.com
Wed Oct 12 00:04:29 EDT 2011


Thomas Abraham wrote:

> Sent: Tuesday, October 11, 2011 3:16 AM
> To: linux-arm-kernel at lists.infradead.org
> Cc: linux-samsung-soc at vger.kernel.org; kgene.kim at samsung.com;
> vinod.koul at intel.com; Jassi Brar; Boojin Kim
> Subject: [PATCH v6 04/10] DMA: PL330: Add device tree support
>
> For PL330 dma controllers instantiated from device tree, the channel
> lookup is based on phandle of the dma controller and dma request id
> specified by the client node. During probe, the private data of each
> channel of the controller is set to point to the device node of the
> dma controller. The 'chan_id' of the each channel is used as the
> dma request id.
>
> Client driver requesting dma channels specify the phandle of the
> dma controller and the request id. The pl330 filter function
> converts the phandle to the device node pointer and matches that
> with channel's private data. If a match is found, the request id
> from the client node and the 'chan_id' of the channel is matched.
> A channel is found if both the values match.
>
> Cc: Jassi Brar <jassisinghbrar at gmail.com>
> Cc: Boojin Kim <boojin.kim at samsung.com>
> Signed-off-by: Thomas Abraham <thomas.abraham at linaro.org>
> Reviewed-by: Rob Herring <rob.herring at calxeda.com>
> Acked-by: Jassi Brar <jassisinghbrar at gmail.com>
> Acked-by: Grant Likely <grant.likely at secretlab.ca>
> ---

Looks good to me.
Acked-by: Boojin Kim <boojin.kim at samsung.com>








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