This series first adds a driver to control the interrupt controller provided by the System Control Unit (SCU) on the AST2500 and AST2600 SOCs. The interrupts made available are necessary for the control of the XDMA engine embedded in the same Aspeed SOCs. This series then adds a driver to control the XDMA engine. This driver was previously sent to the list without support for the AST2600, and has been refactored significantly to enable that support. The XDMA engine performs automatic DMA operations between the Aspeed SOC (acting as a BMC) and a host processor. Changes since v5: - Rework the XDMA locking completely; thanks Andrew Jeffrey for the help. Changes since v4: - Fix dts documentation example for XDMA - Add errno in warning for SCU failure in XDMA PCIe config - Add a check for in_reset before proceeding in O_NONBLOCK case - Add comments to memory sizes in the witherspoon/tacoma XDMA dts entries Changes since v3: - See individual patches; just clean-up items Changes since v2: - See individual patches - Drop rainier dts patch - In summary, remove references to VGA memory as the XDMA driver doesn't care where it is. Remove SDRAM controller reference. Move user reset functionality to a separate patch and make it an ioctl. Changes since v1: - See individual patches - In summary, first the irqchip driver switched to use the parent SCU regmap rather than iomapping it's register. Secondly, the XDMA initialization switched to use properties from the device tree rather than dynamically calculate memory spaces, and system config. Eddie James (12): dt-bindings: interrupt-controller: Add Aspeed SCU interrupt controller irqchip: Add Aspeed SCU interrupt controller ARM: dts: aspeed: ast2500: Add SCU interrupt controller ARM: dts: aspeed: ast2600: Add SCU interrupt controllers dt-bindings: soc: Add Aspeed XDMA Engine soc: aspeed: Add XDMA Engine Driver soc: aspeed: xdma: Add user interface soc: aspeed: xdma: Add reset ioctl ARM: dts: aspeed: ast2500: Add XDMA Engine ARM: dts: aspeed: ast2600: Add XDMA Engine ARM: dts: aspeed: witherspoon: Enable XDMA Engine ARM: dts: aspeed: tacoma: Enable XDMA engine .../interrupt-controller/aspeed,ast2xxx-scu-ic.txt | 23 + .../devicetree/bindings/soc/aspeed/xdma.txt | 40 + MAINTAINERS | 16 + arch/arm/boot/dts/aspeed-bmc-opp-tacoma.dts | 6 + arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts | 6 + arch/arm/boot/dts/aspeed-g5.dtsi | 19 + arch/arm/boot/dts/aspeed-g6.dtsi | 27 + drivers/irqchip/Makefile | 2 +- drivers/irqchip/irq-aspeed-scu-ic.c | 239 +++++ drivers/soc/aspeed/Kconfig | 8 + drivers/soc/aspeed/Makefile | 1 + drivers/soc/aspeed/aspeed-xdma.c | 1025 ++++++++++++++++++++ .../interrupt-controller/aspeed-scu-ic.h | 23 + include/uapi/linux/aspeed-xdma.h | 42 + 14 files changed, 1476 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/interrupt-controller/aspeed,ast2xxx-scu-ic.txt create mode 100644 Documentation/devicetree/bindings/soc/aspeed/xdma.txt create mode 100644 drivers/irqchip/irq-aspeed-scu-ic.c create mode 100644 drivers/soc/aspeed/aspeed-xdma.c create mode 100644 include/dt-bindings/interrupt-controller/aspeed-scu-ic.h create mode 100644 include/uapi/linux/aspeed-xdma.h -- 1.8.3.1
