From d0562674838c08ff142c0e9a8e12634e133c4361 Mon Sep 17 00:00:00 2001 From: "Suthikulpanit, Suravee" Date: Wed, 10 Jun 2015 11:08:52 -0500 Subject: ACPI / scan: Parse _CCA and setup device coherency This patch implements support for ACPI _CCA object, which is introduced in ACPIv5.1, can be used for specifying device DMA coherency attribute. The parsing logic traverses device namespace to parse coherency information, and stores it in acpi_device_flags. Then uses it to call arch_setup_dma_ops() when creating each device enumerated in DSDT during ACPI scan. This patch also introduces acpi_dma_is_coherent(), which provides an interface for device drivers to check the coherency information similarly to the of_dma_is_coherent(). Signed-off-by: Mark Salter Signed-off-by: Suravee Suthikulpanit Signed-off-by: Rafael J. Wysocki --- drivers/acpi/Kconfig | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/acpi/Kconfig') diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index ab2cbb51c6aa..212735f3f074 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -54,6 +54,9 @@ config ACPI_GENERIC_GSI config ACPI_SYSTEM_POWER_STATES_SUPPORT bool +config ACPI_CCA_REQUIRED + bool + config ACPI_SLEEP bool depends on SUSPEND || HIBERNATION -- cgit v1.2.3