This patchset adds support for the STM32 DMA controller. This controller provides 8 channels dedicated to managing memory access request from one or more peripherals. Each stream can have up to 8 requests in total. Changes since v2: - remove interrupt configuration management from DT - remove FIFO configuration management from DT except threshold as it is very hard to handle it in the driver due to many possible combinations according to burst and bus width - update DMA client message in DT documentation file - specify the order to be used to set per-channel DMA interrupts in the DT - remove unused enumerations for channel and request ids - keep as soon as possible 80 lines char for more readability - replace unsigned int by u32 - return error if burst is not supported in stm32_dma_get_burst() - return error if bus_width is not supported in stm32_dma_get_width() - add FIFO configuration management inside the driver except for threshold - add interrupt configuration management inside the driver - rework stm32_dma_chan_irq() to handle error interrupt in one way - rework stm32_dma_set_xfer_param() to be easier to read - update stm32_dma_tx_status() to always return status from dma_cookie_status() - disable clk if we don't manage to stop the DMA channel during channel resources allocation - set driver as built-in as DMA will be required by other built-in driver Changes since v1: - remove dmamux boolean as it is not needed - replace dma by DMA in Kconfig - add default return value in stm32_dma_get_width() - add defalut return value in stm32_dma_get_burst() - use lower case for constant hexadecimal values M'boumba Cedric Madianga (4): dt-bindings: Document the STM32 DMA bindings dmaengine: Add STM32 DMA driver ARM: dts: Add STM32 DMA support for STM32F429 MCU ARM: configs: Add STM32 DMA support in STM32 defconfig .../devicetree/bindings/dma/stm32-dma.txt | 82 ++ arch/arm/boot/dts/stm32f429.dtsi | 31 + arch/arm/configs/stm32_defconfig | 2 + drivers/dma/Kconfig | 12 + drivers/dma/Makefile | 1 + drivers/dma/stm32-dma.c | 1148 ++++++++++++++++++++ 6 files changed, 1276 insertions(+) create mode 100644 Documentation/devicetree/bindings/dma/stm32-dma.txt create mode 100644 drivers/dma/stm32-dma.c -- 1.9.1 -- 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
