xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

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

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

26
drivers/acpi/acpica/rscalc.c
View File

@@ -402,6 +402,23 @@ acpi_rs_get_aml_length(struct acpi_resource *resource,
break;
case ACPI_RESOURCE_TYPE_PIN_GROUP_FUNCTION:
total_size = (acpi_rs_length)(total_size +
resource->data.
pin_group_function.
resource_source.
string_length +
resource->data.
pin_group_function.
resource_source_label.
string_length +
resource->data.
pin_group_function.
vendor_length);
break;
default:
break;
@@ -634,6 +651,15 @@ acpi_rs_get_list_length(u8 *aml_buffer,
break;
case ACPI_RESOURCE_NAME_PIN_GROUP_FUNCTION:
extra_struct_bytes +=
aml_resource->pin_group_function.vendor_offset -
aml_resource->pin_group_function.res_source_offset +
aml_resource->pin_group_function.vendor_length;
break;
default:
break;