linux/drivers/dma/sf-pdma/Kconfig

config SF_PDMA
	tristate "Sifive PDMA controller driver"
	select DMA_ENGINE
	select DMA_VIRTUAL_CHANNELS
	help
	  Support the SiFive PDMA controller.
dmaengine: sf-pdma: add platform DMA support for HiFive Unleashed A00 Add PDMA driver, sf-pdma, to enable DMA engine on HiFive Unleashed Rev A00 board. - Implement dmaengine APIs, support MEM_TO_MEM async copy. - Tested by DMA Test client - Supports 4 channels DMA, each channel has 1 done and 1 err interrupt connected to platform-level interrupt controller (PLIC). - Depends on DMA_ENGINE and DMA_VIRTUAL_CHANNELS The datasheet is here: https://static.dev.sifive.com/FU540-C000-v1.0.pdf Follow the DMAengine controller doc, "./Documentation/driver-api/dmaengine/provider.rst" to implement DMA engine. And use the dma test client in doc, "./Documentation/driver-api/dmaengine/dmatest.rst", to test. Each DMA channel has separate HW regs and support done and error ISRs. 4 channels share 1 done and 1 err ISRs. There's no expander/arbitrator in DMA HW. ------ ------ \| \|--< done 23 >--\|ch 0\| \| \|--< err 24 >--\| \| (dma0chan0) \| \| ------ \| \| ------ \| \|--< done 25 >--\|ch 1\| \| \|--< err 26 >--\| \| (dma0chan1) \|PLIC\| ------ \| \| ------ \| \|--< done 27 >--\|ch 2\| \| \|--< err 28 >--\| \| (dma0chan2) \| \| ------ \| \| ------ \| \|--< done 29 >--\|ch 3\| \| \|--< err 30 >--\| \| (dma0chan3) ------ ------ Signed-off-by: Green Wan <green.wan@sifive.com> Link: https://lore.kernel.org/r/20191107084955.7580-4-green.wan@sifive.com Signed-off-by: Vinod Koul <vkoul@kernel.org> 2019-11-07 16:49:21 +08:00			`config SF_PDMA`
			`tristate "Sifive PDMA controller driver"`
			`select DMA_ENGINE`
			`select DMA_VIRTUAL_CHANNELS`
			`help`
			`Support the SiFive PDMA controller.`