diff options
Diffstat (limited to 'src/acpi')
| -rw-r--r-- | src/acpi/acpigen.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/acpi/acpigen.c b/src/acpi/acpigen.c index 08f482d2a2..793841cc5b 100644 --- a/src/acpi/acpigen.c +++ b/src/acpi/acpigen.c @@ -18,6 +18,7 @@ #include <device/device.h> #include <device/pci_def.h> #include <device/pci_type.h> +#include <device/soundwire.h> static char *gencurrent; @@ -1885,3 +1886,30 @@ void acpigen_write_ADR_pci_device(const struct device *dev) assert(dev->path.type == DEVICE_PATH_PCI); acpigen_write_ADR_pci_devfn(dev->path.pci.devfn); } + +/** + * acpigen_write_ADR_soundwire_device() - SoundWire ACPI Device Address Encoding. + * @address: SoundWire device address properties. + * + * From SoundWire Discovery and Configuration Specification Version 1.0 Table 3. + * + * 63..52 - Reserved (0) + * 51..48 - Zero-based SoundWire Link ID, relative to the immediate parent. + * Used when a Controller has multiple master devices, each producing a + * separate SoundWire Link. Set to 0 for single-link controllers. + * 47..0 - SoundWire Device ID Encoding from specification version 1.2 table 88 + * 47..44 - SoundWire specification version that this device supports + * 43..40 - Unique ID for multiple devices + * 39..24 - MIPI standard manufacturer code + * 23..08 - Vendor defined part ID + * 07..00 - MIPI class encoding + */ +void acpigen_write_ADR_soundwire_device(const struct soundwire_address *address) +{ + acpigen_write_ADR((((uint64_t)address->link_id & 0xf) << 48) | + (((uint64_t)address->version & 0xf) << 44) | + (((uint64_t)address->unique_id & 0xf) << 40) | + (((uint64_t)address->manufacturer_id & 0xffff) << 24) | + (((uint64_t)address->part_id & 0xffff) << 8) | + (((uint64_t)address->class & 0xff))); +} |