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ACPICA: ACPI 6.2: Add support for PinGroupFunction() resource

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ACPICA commit bd9a745749eac7137cd23085e6bdeb322de14ea2

PinGroupFunction() is a new resource introduced with ACPI 6.2. It is
used with PinGroup() to configure specific mode for a set of pins
exposed by a GPIO controller.

The format of the resource is:

  PinGroupFunction (Shared/Exclusive, FunctionNumber, ResourceSource,
                    ResourceSourceIndex, ResourceSourceLabel,
                    ResourceUsage, DescriptorName, VendorData)

The resource_source and ResourceSourceLabel fields are used to specify
the PinGroup() resource referenced by PinGroupFunction().

  Device (GPIO)
  {
      Name (_CRS, ResourceTemplate () {
          PinGroup ("group1") {2, 3}
          PinGroup ("group2") {4, 5}
          ...
      })
  }

  Device (I2C)
  {
      Name (_CRS, ResourceTemplate () {
          PinGroupFunction (Exclusive, 6, "^GPIO", 0, "mygroup2")
      })
  }

In the above example the PinGroupFunction() references the second
PinGroup() resource (using label "mygroup2" and configures pins 4 and 5
into mode 6.

Link: https://github.com/acpica/acpica/commit/bd9a7457
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Mika Westerberg
2017-06-05 16:39:31 +08:00
committed by Rafael J. Wysocki
parent fdaa098077
commit f8a6c86644
10 changed files with 182 additions and 2 deletions
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15
include/acpi/acrestyp.h
View File

@@ -591,6 +591,17 @@ struct acpi_resource_pin_group {
u8 *vendor_data;
};
struct acpi_resource_pin_group_function {
u8 revision_id;
u8 producer_consumer; /* For values, see Producer/Consumer above */
u8 sharable; /* For values, see Interrupt Attributes above */
u16 function_number;
u16 vendor_length;
struct acpi_resource_source resource_source;
struct acpi_resource_label resource_source_label;
u8 *vendor_data;
};
/* ACPI_RESOURCE_TYPEs */
#define ACPI_RESOURCE_TYPE_IRQ 0
@@ -616,7 +627,8 @@ struct acpi_resource_pin_group {
#define ACPI_RESOURCE_TYPE_PIN_FUNCTION 20 /* ACPI 6.2 */
#define ACPI_RESOURCE_TYPE_PIN_CONFIG 21 /* ACPI 6.2 */
#define ACPI_RESOURCE_TYPE_PIN_GROUP 22 /* ACPI 6.2 */
#define ACPI_RESOURCE_TYPE_MAX 22
#define ACPI_RESOURCE_TYPE_PIN_GROUP_FUNCTION 23 /* ACPI 6.2 */
#define ACPI_RESOURCE_TYPE_MAX 23
/* Master union for resource descriptors */
@@ -647,6 +659,7 @@ union acpi_resource_data {
struct acpi_resource_pin_function pin_function;
struct acpi_resource_pin_config pin_config;
struct acpi_resource_pin_group pin_group;
struct acpi_resource_pin_group_function pin_group_function;
/* Common fields */