blob: c4e62dce5d4f0abafc5836144b5060f6657628a9 [file]
# SPDX-License-Identifier: GPL-2.0-only
#
# Loongson DMA controllers drivers
#
if MACH_LOONGSON32 || MACH_LOONGSON64 || COMPILE_TEST
config LOONGSON1_APB_DMA
tristate "Loongson1 APB DMA support"
depends on MACH_LOONGSON32 || COMPILE_TEST
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
help
This selects support for the APB DMA controller in Loongson1 SoCs,
which is required by Loongson1 NAND and audio support.
config LOONGSON2_APB_DMA
tristate "Loongson2 APB DMA support"
depends on MACH_LOONGSON64 || COMPILE_TEST
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
help
Support for the Loongson2 APB DMA controller driver. The
DMA controller is having single DMA channel which can be
configured for different peripherals like audio, nand, sdio
etc which is in APB bus.
This DMA controller transfers data from memory to peripheral fifo.
It does not support memory to memory data transfer.
config LOONGSON2_APB_CMC_DMA
tristate "Loongson2 Chain Multi-Channel DMA support"
depends on MACH_LOONGSON64 || COMPILE_TEST
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
help
Support for the Loongson Chain Multi-Channel DMA controller driver.
It is discovered on the Loongson-2K chip (Loongson-2K0300/Loongson-2K3000),
which has 4/8 channels internally, enabling bidirectional data transfer
between devices and memory.
endif