diff options
| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2017-06-05 11:39:14 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-06-12 15:58:39 +0300 |
| commit | 2b72693066a867ac073a657e871bb64391b4ffdb (patch) | |
| tree | a291073c5d036dfdb8ff9ad7b15eb0bd847da79f /drivers/acpi/acpica/rscalc.c | |
| parent | c7a1dfb95e43d4edce4caf35b98db6a5868d6ea7 (diff) | |
| download | linux-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.c | 34 |
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 = |