diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2023-11-06 17:09:01 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2023-11-20 16:50:47 +0100 |
| commit | bd721b934323e4dcde892013a97e0e5674f4c884 (patch) | |
| tree | 9c90ed5eca4c3b51320855183d6fe25298a3c8b1 /include/acpi | |
| parent | 9880702d123f202369fb674ae62bae25be27475c (diff) | |
ACPI: scan: Extract CSI-2 connection graph from _CRS
Find ACPI CSI-2 resource descriptors defined since ACPI 6.4 (for
CSI-2 and camera configuration) in _CRS for all device objects in
the given scope of the ACPI namespace that have them, identify the
corresponding "remote endpoint" device objects for them and
allocate memory for software nodes needed to create a DT-like data
structure representing the CSI-2 connection graph for drivers.
The code needed to populate these software nodes will be added by
subsequent change sets.
Link: https://uefi.org/specs/ACPI/6.5/06_Device_Configuration.html#camera-serial-interface-csi-2-connection-resource-descriptor
Co-developed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Diffstat (limited to 'include/acpi')
| -rw-r--r-- | include/acpi/acpi_bus.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index afeed6e72049..f122fa1c10a8 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -366,6 +366,24 @@ struct acpi_device_data { struct acpi_gpio_mapping; +struct acpi_device_software_node_port { + unsigned int port_nr; +}; + +/** + * struct acpi_device_software_nodes - Software nodes for an ACPI device + * @nodes: Software nodes for root as well as ports and endpoints. + * @nodeprts: Array of software node pointers, for (un)registering them. + * @ports: Information related to each port and endpoint within a port. + * @num_ports: The number of ports. + */ +struct acpi_device_software_nodes { + struct software_node *nodes; + const struct software_node **nodeptrs; + struct acpi_device_software_node_port *ports; + unsigned int num_ports; +}; + /* Device */ struct acpi_device { u32 pld_crc; |