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authorMika Westerberg <mika.westerberg@linux.intel.com>2017-06-05 11:39:14 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-06-12 15:58:39 +0300
commit2b72693066a867ac073a657e871bb64391b4ffdb (patch)
treea291073c5d036dfdb8ff9ad7b15eb0bd847da79f /drivers/acpi/acpica/rscalc.c
parentc7a1dfb95e43d4edce4caf35b98db6a5868d6ea7 (diff)
downloadlinux-2b72693066a867ac073a657e871bb64391b4ffdb.tar.xz
ACPICA: ACPI 6.2: Add support for PinFunction() resource
ACPICA commit 6bbc6357f7061f1243601adde0ea45f7a89274e0 ACPI 6.2 introduced a new resource that is used to describe how certain pins are muxed for a device. The ASL syntax of this new resource looks like below: PinFunction(Shared, PinConfig, FunctionNumber, ResourceSource, ResourceSourceIndex, ResourceUsage, DescriptorName, VendorData) {Pin List} Which is pretty similar to GpioIo()/GpioInt() resources. Teach ACPICA about this new resource. Link: https://github.com/acpica/acpica/commit/6bbc6357 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>
Diffstat (limited to 'drivers/acpi/acpica/rscalc.c')
-rw-r--r--drivers/acpi/acpica/rscalc.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/rscalc.c b/drivers/acpi/acpica/rscalc.c
index 74e47f829ccb..167ece92fb55 100644
--- a/drivers/acpi/acpica/rscalc.c
+++ b/drivers/acpi/acpica/rscalc.c
@@ -340,6 +340,22 @@ acpi_rs_get_aml_length(struct acpi_resource *resource,
break;
+ case ACPI_RESOURCE_TYPE_PIN_FUNCTION:
+
+ total_size = (acpi_rs_length)(total_size +
+ (resource->data.
+ pin_function.
+ pin_table_length * 2) +
+ resource->data.
+ pin_function.
+ resource_source.
+ string_length +
+ resource->data.
+ pin_function.
+ vendor_length);
+
+ break;
+
case ACPI_RESOURCE_TYPE_SERIAL_BUS:
total_size =
@@ -537,6 +553,24 @@ acpi_rs_get_list_length(u8 *aml_buffer,
}
break;
+ case ACPI_RESOURCE_NAME_PIN_FUNCTION:
+
+ /* Vendor data is optional */
+
+ if (aml_resource->pin_function.vendor_length) {
+ extra_struct_bytes +=
+ aml_resource->pin_function.vendor_offset -
+ aml_resource->pin_function.
+ pin_table_offset +
+ aml_resource->pin_function.vendor_length;
+ } else {
+ extra_struct_bytes +=
+ aml_resource->large_header.resource_length +
+ sizeof(struct aml_resource_large_header) -
+ aml_resource->pin_function.pin_table_offset;
+ }
+ break;
+
case ACPI_RESOURCE_NAME_SERIAL_BUS:
minimum_aml_resource_length =