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@xxxxxxx>
CC: Rafael J. Wysocki <rjw@xxxxxxxxxxxxx>
CC: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
---
include/linux/property.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/include/linux/property.h b/include/linux/property.h
index a59c6ee..522c1bf 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -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);
--
2.1.0
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