diff options
Diffstat (limited to 'src/acpi/device.c')
| -rw-r--r-- | src/acpi/device.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/acpi/device.c b/src/acpi/device.c index 2b085b61a6..b732b8f36a 100644 --- a/src/acpi/device.c +++ b/src/acpi/device.c @@ -1183,3 +1183,19 @@ void acpi_device_write_pci_dev(const struct device *dev) acpigen_pop_len(); /* Device */ acpigen_pop_len(); /* Scope */ } + +/* ID for the DmaProperty _DSD */ +#define ACPI_DSD_DMA_PROPERTY_UUID "70D24161-6DD5-4C9E-8070-705531292865" + +/* _DSD with DmaProperty */ +void acpi_device_add_dma_property(struct acpi_dp *dsd) +{ + struct acpi_dp *prev_dsd = dsd, *pkg; + if (prev_dsd == NULL) + dsd = acpi_dp_new_table("_DSD"); + pkg = acpi_dp_new_table(ACPI_DSD_DMA_PROPERTY_UUID); + acpi_dp_add_integer(pkg, "DmaProperty", 1); + acpi_dp_add_package(dsd, pkg); + if (prev_dsd == NULL) + acpi_dp_write(dsd); +} |