linux/drivers/dma/dw/Kconfig
Miquel Raynal 134d9c52fc dmaengine: dw: dmamux: Introduce RZN1 DMA router support
The Renesas RZN1 DMA IP is based on a DW core, with eg. an additional
dmamux register located in the system control area which can take up to
32 requests (16 per DMA controller). Each DMA channel can be wired to
two different peripherals.

We need two additional information from the 'dmas' property: the channel
(bit in the dmamux register) that must be accessed and the value of the
mux for this channel.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220427095653.91804-6-miquel.raynal@bootlin.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-05-19 22:34:51 +05:30

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# SPDX-License-Identifier: GPL-2.0
#
# DMA engine configuration for dw
#
config DW_DMAC_CORE
tristate
select DMA_ENGINE
config DW_DMAC
tristate "Synopsys DesignWare AHB DMA platform driver"
depends on HAS_IOMEM
select DW_DMAC_CORE
help
Support the Synopsys DesignWare AHB DMA controller. This
can be integrated in chips such as the Intel Cherrytrail.
config RZN1_DMAMUX
tristate "Renesas RZ/N1 DMAMUX driver"
depends on DW_DMAC
depends on ARCH_RZN1 || COMPILE_TEST
help
Support the Renesas RZ/N1 DMAMUX which is located in front of
the Synopsys DesignWare AHB DMA controller located on Renesas
SoCs.
config DW_DMAC_PCI
tristate "Synopsys DesignWare AHB DMA PCI driver"
depends on PCI
depends on HAS_IOMEM
select DW_DMAC_CORE
help
Support the Synopsys DesignWare AHB DMA controller on the
platforms that enumerate it as a PCI device. For example,
Intel Medfield has integrated this GPDMA controller.