On Thu, Oct 18, 2012 at 18:56:39, Porter, Matt wrote: ...snip... ...snip... ...snip...
> > This series adds DMA Engine support for AM33xx, which uses > an EDMA DMAC. The EDMA DMAC has been previously supported by only > a private API implementation (much like the situation with OMAP > DMA) found on the DaVinci family of SoCs. > > The series applies on top of 3.7-rc1 and the following patches: > > - GPMC fails to reserve memory fix: > http://www.spinics.net/lists/linux-omap/msg79675.html > - TPS65910 regulator fix: > https://patchwork.kernel.org/patch/1593651/ > - dmaengine DT support from Vinod's dmaengine_dt branch in > git://git.infradead.org/users/vkoul/slave-dma.git since > 027478851791df751176398be02a3b1c5f6aa824 > > The approach taken is similar to how OMAP DMA is being converted to > DMA Engine support. With the functional EDMA private API already > existing in mach-davinci/dma.c, we first move that to an ARM common > area so it can be shared. Adding DT and runtime PM support to the > private EDMA API implementation allows it to run on AM33xx. AM33xx > *only* boots using DT so we leverage Jon's generic DT DMA helpers to > register EDMA DMAC with the of_dma framework and then add support > for calling the dma_request_slave_channel() API to both the mmc > and spi drivers. > > With this series both BeagleBone and the AM335x EVM have working > MMC and SPI support. > > This is tested on BeagleBone with a SPI framebuffer driver and MMC > rootfs. A trivial gpio DMA event misc driver was used to test the > crossbar DMA event support. It is also tested on the AM335x EVM > with the onboard SPI flash and MMC rootfs. The branch at > https://github.com/ohporter/linux/tree/edma-dmaengine-v3 has the > complete series, dependencies, and some test drivers/defconfigs. > > Regression testing was done on AM180x-EVM (which also makes use > of the EDMA dmaengine driver and the EDMA private API) using SD, > SPI flash, and the onboard audio supported by the ASoC Davinci > driver. Since you have tested MMC, and probably will be adding Audio support for AM335x as well, I believe you will also be adding Pin-mux support for both the modules. Can you share your plan to release the next version? I have few patches pending for AM335x Audio (DT related). Thanks in advance Regards Gururaja > > After this series, the plan is to convert the last in-tree user > of the private EDMA API (davinci-pcm/mcasp) and then eliminate > the private EDMA API by folding its functionality into > drivers/dma/edma.c. > > Matt Porter (16): > dmaengine: edma: fix slave config dependency on direction > ARM: davinci: move private EDMA API to arm/common > ARM: edma: remove unused transfer controller handlers > ARM: edma: add DT and runtime PM support for AM33XX > ARM: edma: add AM33XX crossbar event support > dmaengine: edma: enable build for AM33XX > dmaengine: edma: Add TI EDMA device tree binding > ARM: dts: add AM33XX EDMA support > dmaengine: add dma_request_slave_channel_compat() > mmc: omap_hsmmc: convert to dma_request_slave_channel_compat() > mmc: omap_hsmmc: limit max_segs with the EDMA DMAC > mmc: omap_hsmmc: add generic DMA request support to the DT binding > ARM: dts: add AM33XX MMC support > spi: omap2-mcspi: convert to dma_request_slave_channel_compat() > spi: omap2-mcspi: add generic DMA request support to the DT binding > ARM: dts: add AM33XX SPI support > ------------------------------------------------------------------------------ LogMeIn Central: Instant, anywhere, Remote PC access and management. Stay in control, update software, and manage PCs from one command center Diagnose problems and improve visibility into emerging IT issues Automate, monitor and manage. Do more in less time with Central http://p.sf.net/sfu/logmein12331_d2d _______________________________________________ spi-devel-general mailing list spi-devel-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/spi-devel-general
