[PATCH 0/8] ACPI _CRS CSI-2 and MIPI DisCo for Imaging support

Sakari Ailus
2023-01-17T12:22:19Z

Hello all,

Here's an implementation of ACPI 6.4 _CRS CSI-2 resource descriptor and
MIPI DisCo for Imaging 1.0 [1]. What the two basically provide is an
officially sanctioned way to describe CSI-2 connected cameras to operating
system software, something DT based systems have enjoyed for quite some
time already.

The implementation digs the information from ACPI tables (_CRS descriptors
and data + property extensions) and constructs software nodes that are
compatible with Documentation/firmware-guide/acpi/dsd/graph.rst and
Documentation/devicetree/bindings/media/video-interface-devices.yaml . No
specific driver changes are needed.

These patches are on the testing branch of the linux-acpi tree where they
depend on the patch constifying the ACPI pathname argument for
acpi_get_handle() (commit 91fdb91ccca2b48572a1ccf1d382fd599e3e1237).

[1] https://www.mipi.org/specifications/mipi-disco-imaging

Sakari Ailus (8):
ACPI: property: Parse data node string references in properties
ACPI: property: Parse _CRS CSI-2 descriptor
device property: Add SOFTWARE_NODE() macro for defining software nodes
ACPI: property: Generate camera swnodes for ACPI and DisCo for Imaging
ACPI: property: Dig "rotation" property for devices with CSI2 _CRS
ACPI: property: Rename parsed MIPI DisCo for Imaging properties
ACPI: property: Skip MIPI property table without "mipi-img" prefix
ACPI: property: Document _CRS CSI-2 and DisCo for Imaging support

drivers/acpi/Makefile | 2 +-
drivers/acpi/internal.h | 9 +
drivers/acpi/mipi.c | 769 +++++++++++++++++++++++++++++++++++++++
drivers/acpi/property.c | 121 ++++--
drivers/acpi/scan.c | 33 +-
include/acpi/acpi_bus.h | 61 ++++
include/linux/property.h | 7 +
7 files changed, 975 insertions(+), 27 deletions(-)
create mode 100644 drivers/acpi/mipi.c

base-commit: 837dc62247d5e50a0724af2001f070962300c87e
--
2.30.2