Hello all Previous version: https://lore.kernel.org/linux-media/20201019225903.14276-1-djrscally@xxxxxxxxx/ This series aims to add support for webcams on laptops with ACPI tables designed for use with CIO2 on Windows. There are two main parts; the first is extending the ipu3-cio2 driver to allow for patching the firmware via software_nodes if endpoints aren't defined by ACPI. Patch #13 deals directly with that, all preceding patches are either supplemental changes or incidental fixes along the way. The second main part is a way to handle the unusual definition of resource destined for the sensors in these ACPI tables; regulators and GPIO lines that are supposed to be consumed by the sensor are lumped in the _CRS of a dummy ACPI device upon which the sensor is dependent. Patch 18 defines a new driver to handle those dummy devices and map the resources to the sensor instead. 14-17 are supporting changes for that driver. Changelogs mostly in the individual patches, but a broad summary: - Altered fwnode_device_is_available() to return true if the fwnode_handle doesn't implement that operation. - Altered fwnode_graph_get_endpoint_by_id() to parse secondary if no endpoint found on primary. - Enforce parent->child ordering of software_nodes on registration - Added a function to get the next ACPI device with matching _HID, plus an iterator macro - Altered cio2-bridge.c to store the bridge struct (and basically everything else) in heap, plus removed the requirement to delay ipu3-cio2 probe until after the i2c devices were instantiated. Also now ensured we handle multiple sensors with the same _HID. - Added a function to get devices _dependent_ on a given ACPI dev, according to their _DEP entries. - Added a function to explicitly construct the name of an I2C dev created from an ACPI dev. - Added a driver to handle the dummy ACPI devices discussed above. Comments very welcome! Dan Scally (1): i2c: i2c-core-base: Use the new i2c_acpi_dev_name() in i2c_set_dev_name() Daniel Scally (16): property: Return true in fwnode_device_is_available for node types that do not implement this operation property: Add support for calling fwnode_graph_get_endpoint_by_id() for fwnode->secondary software_node: Fix failure to put() and get() references to children in software_node_get_next_child() software_node: Enforce parent before child ordering of nodes array for software_node_register_nodes() software_node: Alter software_node_unregister_nodes() to unregister the array in reverse order software_node: amend software_node_unregister_node_group() to perform unregistration of array in reverse order to be consistent with software_node_unregister_nodes() lib/test_printf.c: Use helper function to unwind array of software_nodes ipu3-cio2: Add T: entry to MAINTAINERS ipu3-cio2: Rename ipu3-cio2.c to allow module to be built from multiple source files retaining ipu3-cio2 name media: v4l2-core: v4l2-async: Check possible match in match_fwnode based on sd->fwnode->secondary acpi: Add acpi_dev_get_next_match_dev() and macro to iterate through acpi_devices matching a given _HID ipu3-cio2: Add functionality allowing software_node connections to sensors on platforms designed for Windows acpi: utils: Add function to fetch dependent acpi_devices i2c: i2c-core-acpi: Add i2c_acpi_dev_name() gpio: gpiolib-acpi: Export acpi_get_gpiod() ipu3: Add driver for dummy INT3472 ACPI device Heikki Krogerus (1): software_node: Add support for fwnode_graph*() family of functions MAINTAINERS | 9 + drivers/acpi/utils.c | 98 ++++- drivers/base/property.c | 9 + drivers/base/swnode.c | 157 +++++++- drivers/gpio/gpiolib-acpi.c | 3 +- drivers/i2c/i2c-core-acpi.c | 14 + drivers/i2c/i2c-core-base.c | 2 +- drivers/media/pci/intel/ipu3/Kconfig | 32 ++ drivers/media/pci/intel/ipu3/Makefile | 4 + drivers/media/pci/intel/ipu3/cio2-bridge.c | 260 ++++++++++++ drivers/media/pci/intel/ipu3/cio2-bridge.h | 108 +++++ drivers/media/pci/intel/ipu3/int3472.c | 381 ++++++++++++++++++ drivers/media/pci/intel/ipu3/int3472.h | 96 +++++ .../ipu3/{ipu3-cio2.c => ipu3-cio2-main.c} | 27 ++ drivers/media/pci/intel/ipu3/ipu3-cio2.h | 6 + drivers/media/v4l2-core/v4l2-async.c | 8 + include/acpi/acpi_bus.h | 9 + include/linux/acpi.h | 5 + include/linux/i2c.h | 5 + lib/test_printf.c | 4 +- 20 files changed, 1213 insertions(+), 24 deletions(-) create mode 100644 drivers/media/pci/intel/ipu3/cio2-bridge.c create mode 100644 drivers/media/pci/intel/ipu3/cio2-bridge.h create mode 100644 drivers/media/pci/intel/ipu3/int3472.c create mode 100644 drivers/media/pci/intel/ipu3/int3472.h rename drivers/media/pci/intel/ipu3/{ipu3-cio2.c => ipu3-cio2-main.c} (98%) -- 2.25.1
