| # SPDX-License-Identifier: GPL-2.0 |
| menu "DMA support" |
| |
| |
| config SH_DMA |
| bool "SuperH on-chip DMA controller (DMAC) support" |
| depends on CPU_SH3 || CPU_SH4 |
| default n |
| |
| config SH_DMA_IRQ_MULTI |
| bool |
| depends on SH_DMA |
| default y if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7751 || \ |
| CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7750R || \ |
| CPU_SUBTYPE_SH7751R || CPU_SUBTYPE_SH7091 || \ |
| CPU_SUBTYPE_SH7763 || CPU_SUBTYPE_SH7780 || \ |
| CPU_SUBTYPE_SH7785 || CPU_SUBTYPE_SH7760 |
| |
| config SH_DMA_API |
| depends on SH_DMA |
| bool "SuperH DMA API support" |
| default n |
| help |
| SH_DMA_API always enabled DMA API of used SuperH. |
| If you want to use DMA ENGINE, you must not enable this. |
| Please enable DMA_ENGINE and SH_DMAE. |
| |
| config NR_ONCHIP_DMA_CHANNELS |
| int |
| depends on SH_DMA |
| default "4" if CPU_SUBTYPE_SH7709 || CPU_SUBTYPE_SH7750 || \ |
| CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7751 || \ |
| CPU_SUBTYPE_SH7091 |
| default "8" if CPU_SUBTYPE_SH7750R || CPU_SUBTYPE_SH7751R || \ |
| CPU_SUBTYPE_SH7760 |
| default "12" if CPU_SUBTYPE_SH7723 || CPU_SUBTYPE_SH7724 || \ |
| CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 |
| default "6" |
| help |
| This allows you to specify the number of channels that the on-chip |
| DMAC supports. This will be 4 for SH7709/SH7750/SH7750S/SH7751/SH7091, |
| 8 for SH7750R/SH7751R/SH7760, and 12 for SH7723/SH7724/SH7780/SH7785. |
| Default is 6. |
| |
| config SH_DMABRG |
| bool "SH7760 DMABRG support" |
| depends on CPU_SUBTYPE_SH7760 |
| help |
| The DMABRG does data transfers from main memory to Audio/USB units |
| of the SH7760. |
| Say Y if you want to use Audio/USB DMA on your SH7760 board. |
| |
| config PVR2_DMA |
| tristate "PowerVR 2 DMAC support" |
| depends on SH_DREAMCAST && SH_DMA |
| help |
| Selecting this will enable support for the PVR2 DMA controller. |
| As this chains off of the on-chip DMAC, that must also be |
| enabled by default. |
| |
| This is primarily used by the pvr2fb framebuffer driver for |
| certain optimizations, but is not necessary for functionality. |
| |
| If in doubt, say N. |
| |
| config G2_DMA |
| tristate "G2 Bus DMA support" |
| depends on SH_DREAMCAST && SH_DMA_API |
| help |
| This enables support for the DMA controller for the Dreamcast's |
| G2 bus. Drivers that want this will generally enable this on |
| their own. |
| |
| If in doubt, say N. |
| |
| endmenu |
