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| author | Kunihiko Hayashi <hayashi.kunihiko@socionext.com> | 2020-02-21 16:52:30 +0900 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-03-02 14:54:34 +0530 |
| commit | 667b9251440b762ebc8cd3348a6e6ab29401bb97 (patch) | |
| tree | ff4672478c34f95da6097958bcf83656e0b47b0e /drivers/dma/Kconfig | |
| parent | b9fb56b6ba8abc96484f007973ca00e30b104422 (diff) | |
| download | linux-667b9251440b762ebc8cd3348a6e6ab29401bb97.tar.gz | |
dmaengine: uniphier-xdmac: Add UniPhier external DMA controller driver
This adds external DMA controller driver implemented in Socionext UniPhier SoCs. This driver supports DMA_MEMCPY and DMA_SLAVE modes. Since this driver does not support the the way to transfer size unaligned to burst width, 'src_maxburst' or 'dst_maxburst' of dma_slave_config must be 1 to transfer arbitrary size. If transfer size is unaligned to burst size, the transfer isn't started and the driver displays an error message. Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com> Link: https://lore.kernel.org/r/1582271550-3403-3-git-send-email-hayashi.kunihiko@socionext.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/Kconfig')
| -rw-r--r-- | drivers/dma/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig index 7fc725d928b2..092483644315 100644 --- a/drivers/dma/Kconfig +++ b/drivers/dma/Kconfig @@ -658,6 +658,17 @@ config UNIPHIER_MDMAC UniPhier platform. This DMA controller is used as the external DMA engine of the SD/eMMC controllers of the LD4, Pro4, sLD8 SoCs. +config UNIPHIER_XDMAC + tristate "UniPhier XDMAC support" + depends on ARCH_UNIPHIER || COMPILE_TEST + depends on OF + select DMA_ENGINE + select DMA_VIRTUAL_CHANNELS + help + Enable support for the XDMAC (external DMA controller) on the + UniPhier platform. This DMA controller can transfer data from + memory to memory, memory to peripheral and peripheral to memory. + config XGENE_DMA tristate "APM X-Gene DMA support" depends on ARCH_XGENE || COMPILE_TEST |