tree a017e66514453e0fdc5489076877d1a02a5e568a
parent 1b9863c6aa56d92126ec0d5c42eae25df52b7ca1
author Suthikulpanit, Suravee <Suravee.Suthikulpanit@amd.com> 1446072648 -0700
committer Rafael J. Wysocki <rafael.j.wysocki@intel.com> 1446856161 +0100

ACPI: Adding DMA Attribute APIs for ACPI Device

Adding acpi_get_dma_attr() to query DMA attributes of ACPI devices.
It returns the enum dev_dma_attr, which communicates DMA information
more clearly. This API replaces the acpi_check_dma(), which will be
removed in subsequent patch.

This patch also provides a convenient function, acpi_dma_supported(),
to check DMA support of the specified ACPI device.

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>