On Mon, Sep 12, 2011 at 11:59 PM, Thomas Abraham <thomas.abraham@xxxxxxxxxx> wrote: > 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@xxxxxxxxx> > Cc: Boojin Kim <boojin.kim@xxxxxxxxxxx> > Signed-off-by: Thomas Abraham <thomas.abraham@xxxxxxxxxx> > Reviewed-by: Rob Herring <rob.herring@xxxxxxxxxxx> > --- Acked-by: Jassi Brar <jassisinghbrar@xxxxxxxxx> thanks -jassi -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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