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

Message ID 20230117122244.2546597-1-sakari.ailus@linux.intel.com
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Series ACPI _CRS CSI-2 and MIPI DisCo for Imaging support | expand

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Sakari Ailus Jan. 17, 2023, 12:22 p.m. UTC 
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