Hi, This set of patches introduces support for the new Atmel DMA controller know as XDMAC and available on SAMA5D4. Driver updated according to Arnd and Nicolas comments. Changes from: - v4 - compile the driver if COMPILE_TEST is selected - merge header file into at_xdmac.c - use write memory barriers before starting the channel - init active_xfer to false when taking a descriptor from the free descriptors list - remove dma capabilities mask - use CONFIG_PM instead of CONFIG_PM_SLEEP for prepare function - style fixes - update documentation to add the <chip> compatible description - add maintener entry - v3 - use dma_get_any_slave_channel instead of dma_request_channel - fix tx_status behavior for non active transfers - rename at_xdmac_terminate_xfer - replace suspend/resume no irq variants by late/early variants - no more use dev res to request the irq, use the legacy way - add slave capabilities - v2 - documentation updated - fix locking issues - v1 - add power management stuff - check maxburst value - revert subsys_initcall remove, EPROBE_DEFER not yet available on the kernel version I use to do the tests, moreover other devices are not ready to use it - RFC: - DMA_SUCCESS replaced by DMA_COMPLETE - fix memcpy issue caused by a mistake in interfaces used - add filter function - remove some parameters from device tree since we can get them through the dma slave configuration - use readl/writel relaxed - remove subsys_initcall - synchronize irq before killing tasklets - use BIT macro - misc cleanup Ludovic Desroches (3): dma: at_xdmac: creation of the atmel eXtended DMA Controller driver ARM: dts: at_xdmac: add bindings documentation MAINTAINERS: add entry for Atmel XDMA driver .../devicetree/bindings/dma/atmel-xdma.txt | 50 + MAINTAINERS | 7 + drivers/dma/Kconfig | 7 + drivers/dma/Makefile | 1 + drivers/dma/at_xdmac.c | 1491 ++++++++++++++++++++ include/dt-bindings/dma/at91.h | 25 + 6 files changed, 1581 insertions(+) create mode 100644 Documentation/devicetree/bindings/dma/atmel-xdma.txt create mode 100644 drivers/dma/at_xdmac.c -- 2.0.3 -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
