1# SPDX-License-Identifier: GPL-2.0 2menu "DMA support" 3 4 5config SH_DMA 6 bool "SuperH on-chip DMA controller (DMAC) support" 7 depends on CPU_SH3 || CPU_SH4 8 default n 9 10config SH_DMA_IRQ_MULTI 11 bool 12 depends on SH_DMA 13 default y if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7751 || \ 14 CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7750R || \ 15 CPU_SUBTYPE_SH7751R || CPU_SUBTYPE_SH7091 || \ 16 CPU_SUBTYPE_SH7763 || CPU_SUBTYPE_SH7780 || \ 17 CPU_SUBTYPE_SH7785 || CPU_SUBTYPE_SH7760 18 19config SH_DMA_API 20 depends on SH_DMA 21 bool "SuperH DMA API support" 22 default n 23 help 24 SH_DMA_API always enabled DMA API of used SuperH. 25 If you want to use DMA ENGINE, you must not enable this. 26 Please enable DMA_ENGINE and SH_DMAE. 27 28config NR_ONCHIP_DMA_CHANNELS 29 int 30 depends on SH_DMA 31 default "4" if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7751 || \ 32 CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7091 33 default "8" if CPU_SUBTYPE_SH7750R || CPU_SUBTYPE_SH7751R || \ 34 CPU_SUBTYPE_SH7760 35 default "12" if CPU_SUBTYPE_SH7723 || CPU_SUBTYPE_SH7780 || \ 36 CPU_SUBTYPE_SH7785 || CPU_SUBTYPE_SH7724 37 default "6" 38 help 39 This allows you to specify the number of channels that the on-chip 40 DMAC supports. This will be 4 for SH7750/SH7751/Sh7750S/SH7091 and 8 for the 41 SH7750R/SH7751R/SH7760, 12 for the SH7723/SH7780/SH7785/SH7724, default is 6. 42 43config SH_DMABRG 44 bool "SH7760 DMABRG support" 45 depends on CPU_SUBTYPE_SH7760 46 help 47 The DMABRG does data transfers from main memory to Audio/USB units 48 of the SH7760. 49 Say Y if you want to use Audio/USB DMA on your SH7760 board. 50 51config PVR2_DMA 52 tristate "PowerVR 2 DMAC support" 53 depends on SH_DREAMCAST && SH_DMA 54 help 55 Selecting this will enable support for the PVR2 DMA controller. 56 As this chains off of the on-chip DMAC, that must also be 57 enabled by default. 58 59 This is primarily used by the pvr2fb framebuffer driver for 60 certain optimizations, but is not necessary for functionality. 61 62 If in doubt, say N. 63 64config G2_DMA 65 tristate "G2 Bus DMA support" 66 depends on SH_DREAMCAST 67 select SH_DMA_API 68 help 69 This enables support for the DMA controller for the Dreamcast's 70 G2 bus. Drivers that want this will generally enable this on 71 their own. 72 73 If in doubt, say N. 74 75endmenu 76