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menu "DMA support"
config SH_DMA_API
bool
config SH_DMA
bool "SuperH on-chip DMA controller (DMAC) support"
depends on CPU_SH3 || CPU_SH4
select SH_DMA_API
default n
config SH_DMA_IRQ_MULTI
bool
depends on SH_DMA
default y if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7751 || \
CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7750R || \
CPU_SUBTYPE_SH7751R || CPU_SUBTYPE_SH7091 || \
CPU_SUBTYPE_SH7763 || CPU_SUBTYPE_SH7764 || \
CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785
config NR_ONCHIP_DMA_CHANNELS
int
depends on SH_DMA
default "4" if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7751 || \
CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7091
default "8" if CPU_SUBTYPE_SH7750R || CPU_SUBTYPE_SH7751R || \
CPU_SUBTYPE_SH7760
default "12" if CPU_SUBTYPE_SH7723 || CPU_SUBTYPE_SH7780 || \
CPU_SUBTYPE_SH7785
default "6"
help
This allows you to specify the number of channels that the on-chip
DMAC supports. This will be 4 for SH7091/SH7750/SH7751 and 8 for the
SH7750R/SH7751R.
config NR_DMA_CHANNELS_BOOL
depends on SH_DMA
bool "Override default number of maximum DMA channels"
help
This allows you to forcibly update the maximum number of supported
DMA channels for a given board. If this is unset, this will default
to the number of channels that the on-chip DMAC has.
config NR_DMA_CHANNELS
int "Maximum number of DMA channels"
depends on SH_DMA && NR_DMA_CHANNELS_BOOL
default NR_ONCHIP_DMA_CHANNELS
help
This allows you to specify the maximum number of DMA channels to
support. Setting this to a higher value allows for cascading DMACs
with additional channels.
config SH_DMABRG
bool "SH7760 DMABRG support"
depends on CPU_SUBTYPE_SH7760
help
The DMABRG does data transfers from main memory to Audio/USB units
of the SH7760.
Say Y if you want to use Audio/USB DMA on your SH7760 board.
config PVR2_DMA
tristate "PowerVR 2 DMAC support"
depends on SH_DREAMCAST && SH_DMA
help
Selecting this will enable support for the PVR2 DMA controller.
As this chains off of the on-chip DMAC, that must also be
enabled by default.
This is primarily used by the pvr2fb framebuffer driver for
certain optimizations, but is not necessary for functionality.
If in doubt, say N.
config G2_DMA
tristate "G2 Bus DMA support"
depends on SH_DREAMCAST
select SH_DMA_API
help
This enables support for the DMA controller for the Dreamcast's
G2 bus. Drivers that want this will generally enable this on
their own.
If in doubt, say N.
endmenu
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