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