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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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