Commit 87244fe5 authored by Laurent Pinchart's avatar Laurent Pinchart

dmaengine: rcar-dmac: Add Renesas R-Car Gen2 DMA Controller (DMAC) driver

The DMAC is a general purpose multi-channel DMA controller that supports
both slave and memcpy transfers.

The driver currently supports the DMAC found in the r8a7790 and r8a7791
SoCs. Support for compatible DMA controllers (such as the audio DMAC)
will be added later.

Feature-wise, automatic hardware handling of descriptors chains isn't
supported yet. LPAE support is implemented.
Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Tested-by: default avatarKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: default avatarWolfram Sang <wsa+renesas@sang-engineering.com>
parent c4d76352
......@@ -19,7 +19,7 @@ obj-$(CONFIG_AT_HDMAC) += at_hdmac.o
obj-$(CONFIG_AT_XDMAC) += at_xdmac.o
obj-$(CONFIG_MX3_IPU) += ipu/
obj-$(CONFIG_TXX9_DMAC) += txx9dmac.o
obj-$(CONFIG_SH_DMAE_BASE) += sh/
obj-$(CONFIG_RENESAS_DMA) += sh/
obj-$(CONFIG_COH901318) += coh901318.o coh901318_lli.o
obj-$(CONFIG_AMCC_PPC440SPE_ADMA) += ppc4xx/
obj-$(CONFIG_IMX_SDMA) += imx-sdma.o
......
......@@ -2,6 +2,10 @@
# DMA engine configuration for sh
#
config RENESAS_DMA
bool
select DMA_ENGINE
#
# DMA Engine Helpers
#
......@@ -12,7 +16,7 @@ config SH_DMAE_BASE
depends on !SUPERH || SH_DMA
depends on !SH_DMA_API
default y
select DMA_ENGINE
select RENESAS_DMA
help
Enable support for the Renesas SuperH DMA controllers.
......@@ -52,3 +56,11 @@ config RCAR_AUDMAC_PP
depends on SH_DMAE_BASE
help
Enable support for the Renesas R-Car Audio DMAC Peripheral Peripheral controllers.
config RCAR_DMAC
tristate "Renesas R-Car Gen2 DMA Controller"
depends on ARCH_SHMOBILE || COMPILE_TEST
select RENESAS_DMA
help
This driver supports the general purpose DMA controller found in the
Renesas R-Car second generation SoCs.
......@@ -16,3 +16,4 @@ obj-$(CONFIG_SH_DMAE) += shdma.o
obj-$(CONFIG_SUDMAC) += sudmac.o
obj-$(CONFIG_RCAR_HPB_DMAE) += rcar-hpbdma.o
obj-$(CONFIG_RCAR_AUDMAC_PP) += rcar-audmapp.o
obj-$(CONFIG_RCAR_DMAC) += rcar-dmac.o
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