BMC/Intel-BMC/linux.git/include/linux/gpio/machine.h, branch dev-4.10

gpio: gpiolib: Generalise state persistence beyond sleep

2018-01-16T17:54:29+00:00

General support for state persistence is added to gpiolib with the introduction of a new pinconf parameter to propagate the request to hardware. The existing persistence support for sleep is adapted to include hardware support if the GPIO driver provides it. Persistence continues to be enabled by default; in-kernel consumers can opt out, but userspace (currently) does not have a choice. The *_SLEEP_MAY_LOSE_VALUE and *_SLEEP_MAINTAIN_VALUE symbols are renamed, dropping the SLEEP prefix to reflect that the concept is no longer sleep-specific. I feel that renaming to just *_MAY_LOSE_VALUE could initially be misinterpreted, so I've further changed the symbols to *_TRANSITORY and *_PERSISTENT to address this. The sysfs interface is modified only to keep consistency with the chardev interface in enforcing persistence for userspace exports. Signed-off-by: Andrew Jeffery Reviewed-by: Charles Keepax Acked-by: Rob Herring Signed-off-by: Linus Walleij (cherry picked from commit e10f72bf4b3e8885c1915a119141481e7fc45ca8) Signed-off-by: Joel Stanley

gpiolib: Add support for removing registered consumer lookup table

2015-07-21T07:21:40+00:00

In case we unload and load a driver module again that is registering a lookup table, without this it will result in multiple entries. Provide an option to remove the lookup table on driver unload Cc: Samuel Ortiz Cc: Linus Walleij Cc: Alexandre Courbot Cc: Thierry Reding Reviewed-by: Alexandre Courbot Reviewed-by: Linus Walleij Tested-by: Ville Syrjälä Signed-off-by: Shobhit Kumar Acked-by: Lee Jones Signed-off-by: Daniel Vetter

gpio: add missing includes in machine.h

2014-08-07T09:54:51+00:00

linux/types.h and linux/list.h should be included so the typed used in the header file are always properly declared. Reported-by: Stephen Rothwell Reported-by: Thierry Reding Signed-off-by: Alexandre Courbot Signed-off-by: Linus Walleij

gpio: split gpiod board registration into machine header

2014-07-28T10:23:35+00:00

As per example from the regulator subsystem: put all defines and functions related to registering board info for GPIO descriptors into a separate header. Cc: Andrew Victor Cc: Nicolas Ferre Cc: Jean-Christophe Plagniol-Villard Cc: Ralf Baechle Cc: Thierry Reding Acked-by: Stephen Warren Reviewed-by: Alexandre Courbot Signed-off-by: Linus Walleij