This patchset adds device tree support for PL330 driver and uses it to add device tree support for Samsung platforms, specifically Exynos4. First patch moves the pl330_filter function from Samsung specific wrappers to pl330 dma driver and also adds a check to ensure that the filter function proceeds only if it the dma channel being investigated belongs to pl330 dma controller instance. Second patch adds support to infer the direction of the dma transfer using the direction specified with the transfer request instead of including this information in the platform data. This simlifies the addition of device tree support. Third patch simplifies the platform data for Exynos4 pl330 dma controllers. Similar patches simplifying the platform data for other Samsung platforms is under development. Fourth patch adds device tree support for pl330 dma controller driver. A dma channel is represented using a phandle of the dma controller node and the channel id within that controller. Client driver request a dma channel using the phandle and channel id pair. Correspondingly, the pl330 filter function has been modified to lookup a channel based on this value. Fifth patch adds device tree support for Samsung's DMA engine wrappers. Client drivers retrive the channel property from their device node and pass it to the wrappers. The wrapper functions use the property value as the filter function parameter. Sixth patch restricts the usage of pl330 device and platform data instances to non-dt platforms. This patchset is based on Linux 3.1-rc3 with following patch sets applied. * To use DMA generic APIs for Samsung DMA - v7 - (15 patches) * ARM: Samsung: use dma-pl330 device name for clock (3 patches) * ARM: S5P64X0: Add the devname for DMA clock. * ARM: SAMSUNG: register the second instance of PL330 DMAC (3 patches) Thomas Abraham (6): DMA: PL330: move filter function into driver DMA: PL330: Infer transfer direction from transfer request instead of platform data ARM: EXYNOS4: Modify platform data for pl330 driver DMA: PL330: Add device tree support ARM: SAMSUNG: Add device tree support for pl330 dma engine wrappers ARM: EXYNOS4: Limit usage of pl330 device instance to non-dt build .../devicetree/bindings/dma/arm-pl330.txt | 42 ++++ arch/arm/mach-exynos4/Kconfig | 7 + arch/arm/mach-exynos4/Makefile | 3 +- arch/arm/mach-exynos4/dma.c | 223 ++++++-------------- arch/arm/plat-samsung/dma-ops.c | 15 +- arch/arm/plat-samsung/include/plat/dma-ops.h | 1 + arch/arm/plat-samsung/include/plat/dma-pl330.h | 3 +- drivers/dma/pl330.c | 133 ++++++++---- include/linux/amba/pl330.h | 15 +- 9 files changed, 216 insertions(+), 226 deletions(-) create mode 100644 Documentation/devicetree/bindings/dma/arm-pl330.txt -- 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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