Commit 1b9863c6 authored Oct 28, 2015 by Suthikulpanit, Suravee Committed by Rafael J. Wysocki Nov 07, 2015

device property: Introducing enum dev_dma_attr



A device could have one of the following DMA attributes:
    * DMA not supported
    * DMA non-coherent
    * DMA coherent

So, this patch introduces enum dev_dma_attribute. This will be used by
new APIs introduced in later patches.

Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

parent d764c21c

include/linux/property.h

+6 −0

Original line number	Diff line number	Diff line
		@@ -27,6 +27,12 @@ enum dev_prop_type {
		DEV_PROP_MAX,
		};

		enum dev_dma_attr {
		DEV_DMA_NOT_SUPPORTED,
		DEV_DMA_NON_COHERENT,
		DEV_DMA_COHERENT,
		};

		bool device_property_present(struct device dev, const char propname);
		int device_property_read_u8_array(struct device dev, const char propname,
		u8 *val, size_t nval);

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