From 667dfed98615ae1fc4cc05b0763078435598c0f5 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Mon, 27 Jul 2015 18:04:02 +0300 Subject: dmaengine: add a driver for Intel integrated DMA 64-bit Intel integrated DMA (iDMA) 64-bit is a specific IP that is used as a part of LPSS devices such as HSUART or SPI. The iDMA IP is attached for private usage on each host controller independently. While it has similarities with Synopsys DesignWare DMA, the following distinctions doesn't allow to use the existing driver: - 64-bit mode with corresponding changes in Hardware Linked List data structure - many slight differences in the channel registers Moreover this driver is based on the DMA virtual channels framework that helps to make the driver cleaner and easy to understand. Signed-off-by: Andy Shevchenko Acked-by: Vinod Koul Signed-off-by: Lee Jones --- drivers/dma/Kconfig | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'drivers/dma/Kconfig') diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig index 88d474b78076..bdbbe5bcfb83 100644 --- a/drivers/dma/Kconfig +++ b/drivers/dma/Kconfig @@ -85,6 +85,14 @@ config INTEL_IOP_ADMA help Enable support for the Intel(R) IOP Series RAID engines. +config IDMA64 + tristate "Intel integrated DMA 64-bit support" + select DMA_ENGINE + select DMA_VIRTUAL_CHANNELS + help + Enable DMA support for Intel Low Power Subsystem such as found on + Intel Skylake PCH. + source "drivers/dma/dw/Kconfig" config AT_HDMAC -- cgit v1.2.3