On 03/06/2012 11:33 PM, Russell King - ARM Linux : > [v2 - more or less same description. Including lakml in cc for the full > set] > > This patch series cleans up the handling of cookies in DMA engine drivers. > This is done by providing a set of inline library functions for common > tasks: > > - moving the 'last completed cookie' into struct dma_chan - everyone > has this in their driver private channel data structure > > - consolidate allocation of cookies to DMA descriptors > > - common way to update 'last completed cookie' value > > - standard way to implement tx_status callback and update the residue > > - consolidate initialization of cookies > > - update implementations differing from the majority of DMA engine drivers > to behave the same as the majority implementation in respect of cookies > > What this means is that we get to the point where all DMA engine drivers > will hand out cookie value '2' as the first, and incrementing cookie > values up to INT_MAX, returning to cookie '1' as the next cookie. > > Think of this patch series as round 1... I am hoping over time that more > code can be consolidated between the DMA engine drivers and end up with a > consistent way to handle various common themes in DMA engine hardware > (like physical channel<->peripheral request signal selection.) > > Overall, the diffstat looks like this: > > arch/arm/include/asm/hardware/iop_adma.h | 2 - > drivers/dma/amba-pl08x.c | 38 ++++--------- > drivers/dma/at_hdmac.c | 48 ++++------------ > drivers/dma/at_hdmac_regs.h | 2 -
For at_hdmac Atmel DMA driver: Tested-by: Nicolas Ferre <nicolas.fe...@atmel.com> Thanks a lot Russell. Best regards, -- Nicolas Ferre _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
