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ACPI / property: Expose data-only subnodes via sysfs

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Add infrastructure needed to expose data-only subnodes of ACPI
device objects introduced previously via sysfs.

Each data-only subnode is represented as a sysfs directory under
the directory corresponding to its parent object (a device or a
data-only subnode).  Each of them has a "path" attribute (containing
the full ACPI namespace path to the object the subnode data come from)
at this time.

Signed-off-by: Rafael J. Wysocki <[email protected]>
Tested-by: Mika Westerberg <[email protected]>
This commit is contained in:
Rafael J. Wysocki 2015-08-27 04:37:19 +02:00
commit 263b4c1a64
3 changed files with 116 additions and 15 deletions
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3
include/acpi/acpi_bus.h
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@ -382,9 +382,12 @@ struct acpi_device {
/* Non-device subnode */
struct acpi_data_node {
const char *name;
acpi_handle handle;
struct fwnode_handle fwnode;
struct acpi_device_data data;
struct list_head sibling;
struct kobject kobj;
struct completion kobj_done;
};
static inline bool acpi_check_dma(struct acpi_device *adev, bool *coherent)