The i8042 interface is used not only on the x86 architecture. Some of non-x86 architectures are using Open Firmware device tree, like SPARC and PowerPC. There is also non-x86 platforms with the FDT support, such as ARM SoCs. There is no code in Linux to support i8042-capable input devices on these newer platforms. This patch creates one more file (i8042-of.h), with OF parsing code for the ePAPR-compatible binding with the 'compatible' property. The binding is based on existing OF code for older platforms, making it possible to reuse this code for these platforms. v2: -Changes in the documentation. -Errors fixed in the initialization function. -Redundant parameters removed from Device Tree bindings (init-reset, etc.). v3: -Reduced amount of 'ifdefs' in the i8042.c file. Initialization order is now the same for all architectures. Warning: the change in v3 is more controversial and needs more testing since affects all architectures which use the driver. Please give information regarding required steps to get this patch accepted. Would be great to find testers to get additional tested-by records. v4: -Rename i8042-dt.h to i8042-of.h, rewrite init/probe/remove functions with OF code to be compatible with SPARC/PowerPC. -Add MODULE_DEVICE_TABLE (it was a mistake to forget about it) -Remove 'command-reg', 'status-reg', 'data-reg' from the binding; it is not required for now. -Yet another variant of changes in i8042.c. Unfortunately, it is not possible to avoid these changes. -Move the documentation file into the right place (thanks to Hans de Goede for the hint) -Change the order of patches Tested on: x86, ARM-vt8500, both as a module\built-in. Roman Volkov (4): i8042: Add i8042_of.h header i8042: Kernel configuration for OF/FDT support i8042: Add OF/FDT support to the driver Documentation: Add 'intel,8042' FDT bindings .../devicetree/bindings/serio/intel,8042.txt | 82 ++++++++++ drivers/input/serio/i8042-of.h | 168 +++++++++++++++++++++ drivers/input/serio/i8042.c | 43 +++++- drivers/input/serio/i8042.h | 3 + 4 files changed, 291 insertions(+), 5 deletions(-) create mode 100644 Documentation/devicetree/bindings/serio/intel,8042.txt create mode 100644 drivers/input/serio/i8042-of.h -- 2.4.2 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html