It may happen that we need to ensure the order of suspend/resume calls between two devices without obvious link. It is for example the case on some boards where both panel and touchscreen are sharing the same reset line. In this case we need to control which device is going in resume first to do only one reset. An other example is make sure that GPU is suspend before composition hardware block to avoid pending drawing requests. To not let everybody creating relationship between devices for free of_device_links_add() has to be called by each driver and not in the core. version 2: - only keep of_device_links_add() and use DL_FLAG_PM_RUNTIME and DL_FLAG_AUTOREMOVE_CONSUMER flags to follow Rafael advices - reword function description - try to use a more explicit property name - rebase on v5.1 Benjamin Gaignard (5): of/device: Add of_device_link_add function Input: edt-ft5x06: Document suspend-dependencies property input: edt-ft5x06 - Call of_device_links_add() to create links Input: goodix: Document suspend-dependencies property input: goodix - Call of_device_links_add() to create links .../bindings/input/touchscreen/edt-ft5x06.txt | 2 ++ .../bindings/input/touchscreen/goodix.txt | 2 ++ drivers/input/touchscreen/edt-ft5x06.c | 2 ++ drivers/input/touchscreen/goodix.c | 3 ++ drivers/of/device.c | 37 ++++++++++++++++++++++ include/linux/of_device.h | 7 ++++ 6 files changed, 53 insertions(+) -- 2.15.0
