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_SH7709 || CPU_SUBTYPE_SH7750 || \ 32 CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7751 || \ 33 CPU_SUBTYPE_SH7091 34 default "8" if CPU_SUBTYPE_SH7750R || CPU_SUBTYPE_SH7751R || \ 35 CPU_SUBTYPE_SH7760 36 default "12" if CPU_SUBTYPE_SH7723 || CPU_SUBTYPE_SH7724 || \ 37 CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 38 default "6" 39 help 40 This allows you to specify the number of channels that the on-chip 41 DMAC supports. This will be 4 for SH7709/SH7750/SH7750S/SH7751/SH7091, 42 8 for SH7750R/SH7751R/SH7760, and 12 for SH7723/SH7724/SH7780/SH7785. 43 Default is 6. 44 45config SH_DMABRG 46 bool "SH7760 DMABRG support" 47 depends on CPU_SUBTYPE_SH7760 48 help 49 The DMABRG does data transfers from main memory to Audio/USB units 50 of the SH7760. 51 Say Y if you want to use Audio/USB DMA on your SH7760 board. 52 53config PVR2_DMA 54 tristate "PowerVR 2 DMAC support" 55 depends on SH_DREAMCAST && SH_DMA 56 help 57 Selecting this will enable support for the PVR2 DMA controller. 58 As this chains off of the on-chip DMAC, that must also be 59 enabled by default. 60 61 This is primarily used by the pvr2fb framebuffer driver for 62 certain optimizations, but is not necessary for functionality. 63 64 If in doubt, say N. 65 66config G2_DMA 67 tristate "G2 Bus DMA support" 68 depends on SH_DREAMCAST && SH_DMA_API 69 help 70 This enables support for the DMA controller for the Dreamcast's 71 G2 bus. Drivers that want this will generally enable this on 72 their own. 73 74 If in doubt, say N. 75 76endmenu 77