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[V5,2/9] device property: Introducing enum dev_dma_attr

Message ID 1446072654-5608-3-git-send-email-Suravee.Suthikulpanit@amd.com (mailing list archive)
State Accepted, archived
Delegated to: Rafael Wysocki
Headers show

Commit Message

Suravee Suthikulpanit Oct. 28, 2015, 10:50 p.m. UTC 
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>
CC: Rafael J. Wysocki <rjw@rjwysocki.net>
CC: Bjorn Helgaas <bhelgaas@google.com>
---
 include/linux/property.h | 6 ++++++
 1 file changed, 6 insertions(+)
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Patch

diff --git a/include/linux/property.h b/include/linux/property.h
index 463de52..8eecf20 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);