1menu "DMA support" 2 3config SH_DMA_API 4 bool 5 6config SH_DMA 7 bool "SuperH on-chip DMA controller (DMAC) support" 8 depends on CPU_SH3 || CPU_SH4 9 select SH_DMA_API 10 default n 11 12config SH_DMA_IRQ_MULTI 13 bool 14 depends on SH_DMA 15 default y if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7751 || \ 16 CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7750R || CPU_SUBTYPE_SH7751R || \ 17 CPU_SUBTYPE_SH7091 || CPU_SUBTYPE_SH7763 || CPU_SUBTYPE_SH7764 || \ 18 CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 19 20config NR_ONCHIP_DMA_CHANNELS 21 int 22 depends on SH_DMA 23 default "4" if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7750S 24 default "8" if CPU_SUBTYPE_SH7750R || CPU_SUBTYPE_SH7751R || CPU_SUBTYPE_SH7760 25 default "12" if CPU_SUBTYPE_SH7723 || CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 26 default "6" 27 help 28 This allows you to specify the number of channels that the on-chip 29 DMAC supports. This will be 4 for SH7750/SH7751 and 8 for the 30 SH7750R/SH7751R. 31 32config NR_DMA_CHANNELS_BOOL 33 depends on SH_DMA 34 bool "Override default number of maximum DMA channels" 35 help 36 This allows you to forcibly update the maximum number of supported 37 DMA channels for a given board. If this is unset, this will default 38 to the number of channels that the on-chip DMAC has. 39 40config NR_DMA_CHANNELS 41 int "Maximum number of DMA channels" 42 depends on SH_DMA && NR_DMA_CHANNELS_BOOL 43 default NR_ONCHIP_DMA_CHANNELS 44 help 45 This allows you to specify the maximum number of DMA channels to 46 support. Setting this to a higher value allows for cascading DMACs 47 with additional channels. 48 49config SH_DMABRG 50 bool "SH7760 DMABRG support" 51 depends on CPU_SUBTYPE_SH7760 52 help 53 The DMABRG does data transfers from main memory to Audio/USB units 54 of the SH7760. 55 Say Y if you want to use Audio/USB DMA on your SH7760 board. 56 57config PVR2_DMA 58 tristate "PowerVR 2 DMAC support" 59 depends on SH_DREAMCAST && SH_DMA 60 help 61 Selecting this will enable support for the PVR2 DMA controller. 62 As this chains off of the on-chip DMAC, that must also be 63 enabled by default. 64 65 This is primarily used by the pvr2fb framebuffer driver for 66 certain optimizations, but is not necessary for functionality. 67 68 If in doubt, say N. 69 70endmenu 71