[PATCH V4 2/8] device property: Introducing enum dev_dma_attr
From: Suravee.Suthikulpanit@amd.com (Suravee Suthikulpanit)
Date: 2015-10-21 15:53:09
Also in:
linux-acpi, linux-pci, lkml
Subsystem:
driver core, kobjects, debugfs and sysfs, software nodes and device properties, the rest · Maintainers:
Greg Kroah-Hartman, "Rafael J. Wysocki", Danilo Krummrich, Linus Torvalds
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 <redacted>
CC: Bjorn Helgaas <bhelgaas@google.com>
---
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