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 || \ 17 CPU_SUBTYPE_SH7751R || CPU_SUBTYPE_SH7091 || \ 18 CPU_SUBTYPE_SH7763 || CPU_SUBTYPE_SH7764 || \ 19 CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \ 20 CPU_SUBTYPE_SH7760 21 22config NR_ONCHIP_DMA_CHANNELS 23 int 24 depends on SH_DMA 25 default "4" if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7751 || \ 26 CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7091 27 default "8" if CPU_SUBTYPE_SH7750R || CPU_SUBTYPE_SH7751R || \ 28 CPU_SUBTYPE_SH7760 29 default "12" if CPU_SUBTYPE_SH7723 || CPU_SUBTYPE_SH7780 || \ 30 CPU_SUBTYPE_SH7785 31 default "6" 32 help 33 This allows you to specify the number of channels that the on-chip 34 DMAC supports. This will be 4 for SH7091/SH7750/SH7751 and 8 for the 35 SH7750R/SH7751R. 36 37config NR_DMA_CHANNELS_BOOL 38 depends on SH_DMA 39 bool "Override default number of maximum DMA channels" 40 help 41 This allows you to forcibly update the maximum number of supported 42 DMA channels for a given board. If this is unset, this will default 43 to the number of channels that the on-chip DMAC has. 44 45config NR_DMA_CHANNELS 46 int "Maximum number of DMA channels" 47 depends on SH_DMA && NR_DMA_CHANNELS_BOOL 48 default NR_ONCHIP_DMA_CHANNELS 49 help 50 This allows you to specify the maximum number of DMA channels to 51 support. Setting this to a higher value allows for cascading DMACs 52 with additional channels. 53 54config SH_DMABRG 55 bool "SH7760 DMABRG support" 56 depends on CPU_SUBTYPE_SH7760 57 help 58 The DMABRG does data transfers from main memory to Audio/USB units 59 of the SH7760. 60 Say Y if you want to use Audio/USB DMA on your SH7760 board. 61 62config PVR2_DMA 63 tristate "PowerVR 2 DMAC support" 64 depends on SH_DREAMCAST && SH_DMA 65 help 66 Selecting this will enable support for the PVR2 DMA controller. 67 As this chains off of the on-chip DMAC, that must also be 68 enabled by default. 69 70 This is primarily used by the pvr2fb framebuffer driver for 71 certain optimizations, but is not necessary for functionality. 72 73 If in doubt, say N. 74 75config G2_DMA 76 tristate "G2 Bus DMA support" 77 depends on SH_DREAMCAST 78 select SH_DMA_API 79 help 80 This enables support for the DMA controller for the Dreamcast's 81 G2 bus. Drivers that want this will generally enable this on 82 their own. 83 84 If in doubt, say N. 85 86endmenu 87