device property: Adding DMA Attribute APIs for Generic Devices
The function device_dma_is_coherent() does not sufficiently
communicate device DMA attributes. Instead, this patch introduces
device_get_dma_attr(), which returns enum dev_dma_attr.
It replaces the acpi_check_dma(), which will be removed in
subsequent patch.
This also provides a convenient function, device_dma_supported(),
to check DMA support of the specified device.
Signed-off-by: Suravee Suthikulpanit <[email protected]>
Acked-by: Bjorn Helgaas <[email protected]>
Reviewed-by: Hanjun Guo <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
diff --git a/include/linux/property.h b/include/linux/property.h
index 8eecf20..7200490 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -176,6 +176,10 @@
bool device_dma_is_coherent(struct device *dev);
+bool device_dma_supported(struct device *dev);
+
+enum dev_dma_attr device_get_dma_attr(struct device *dev);
+
int device_get_phy_mode(struct device *dev);
void *device_get_mac_address(struct device *dev, char *addr, int alen);
