kernel/linux.git/include/linux/gpio/consumer.h, branch v4.11.2

serial: st-asc: Use new GPIOD API to obtain RTS pin

2017-03-14T09:36:41+00:00

The commits mentioned below adapt the GPIO API to allow more information to be passed directly through devm_get_gpiod_from_child() in the first instance. This facilitates the removal of subsequent calls, such as gpiod_direction_output(). This patch firstly moves to utilise the new API and secondly removes the now superfluous call do set the direction. Reported-by: Stephen Rothwell Suggested-by: Boris Brezillon Signed-off-by: Lee Jones [Also drop the header file dummies that only this driver was using] Acked-by: Greg Kroah-Hartman Signed-off-by: Linus Walleij

gpio: reintroduce devm_get_gpiod_from_child()

2017-02-21T13:19:45+00:00

We need to keep this API around for the merge window to avoid nasty build problems in the merges. Cc: Lee Jones Suggested-by: Greg Kroah-Hartman Signed-off-by: Linus Walleij

gpio: Add the devm_fwnode_get_index_gpiod_from_child() helper

2017-02-04T20:28:51+00:00

devm_fwnode_get_gpiod_from_child() currently allows GPIO users to request a GPIO that is defined in a child fwnode instead of directly in the device fwnode. Extend this API by adding the devm_fwnode_get_index_gpiod_from_child() helper which does the same except you can also specify an index in case the 'xx-gpios' property describe several GPIOs. Signed-off-by: Boris Brezillon Signed-off-by: Linus Walleij

gpio: Rename devm_get_gpiod_from_child()

2017-02-04T20:27:26+00:00

Rename devm_get_gpiod_from_child() into devm_fwnode_get_gpiod_from_child() to reflect the fact that this function is operating on a fwnode object. Signed-off-by: Boris Brezillon Acked-by: Jacek Anaszewski Acked-by: Dmitry Torokhov Signed-off-by: Linus Walleij

gpio: Pass GPIO label down to gpiod_request

2017-01-26T08:59:52+00:00

Currently all users of fwnode_get_named_gpiod() have no way to specify a label for the GPIO. So GPIOs listed in debugfs are shown with label "?". With this change a proper label is used. Also adjust all users so they can pass a label, properly retrieved from device tree properties. Signed-off-by: Alexander Stein Cc: Andy Shevchenko Acked-by: Jacek Anaszewski Acked-by: Bartlomiej Zolnierkiewicz Acked-by: Dmitry Torokhov Signed-off-by: Linus Walleij

gpiolib: Convert fwnode_get_named_gpiod() to configure GPIO

2017-01-26T08:59:32+00:00

Make fwnode_get_named_gpiod() consistent with the rest of gpiod_get() like API, i.e. configure GPIO pin immediately after request. Besides obvious clean up it will help to configure pins based on firmware provided resources. Reviewed-by: Mika Westerberg Signed-off-by: Andy Shevchenko Signed-off-by: Linus Walleij

gpio: keep the GPIO line names internal

2015-09-24T17:48:53+00:00

This refactors the changes to the GPIO line naming mechanism to not have so widespread effects, instead we conclude the patch series by having created a name attribute in the GPIO descriptor, that need not be globally unique, and it will be initialized from the old .names array in struct gpio_chip if it exists, then used in the legacy sysfs code like the array was used previously. The associated changes to name lines from the device tree are controversial and need to stand alone from this. Resulting changes: 1. Remove the export and the header for the gpio_name_to_desc() as so far the only use is inside gpiolib.c. Staticize gpio_name_to_desc() and move it above the only function using it. 2. Only print a warning if there are two GPIO lines with the same name. The reason is to preserve current behaviour: before the previous changes to the naming mechanism this would not reject probing the driver, instead the error would occur when trying to export the line in sysfs, so restore this behaviour, but print a friendly warning if names collide. Cc: Johan Hovold Cc: Markus Pargmann Signed-off-by: Linus Walleij

gpio: Introduce gpio descriptor 'name'

2015-09-24T17:48:51+00:00

The latest gpio hogging mechanism assigns each gpio a 'line-name' in the devicetree. The 'name' field is different from the 'label' field. 'label' is only used for requested GPIOs to describe its current use by driver or userspace. The 'name' field describes the GPIO itself, not the use. This is most likely identical to the label in the schematic on the GPIO line and should help to find this particular GPIO. This is equivalent to the gpiochip->names array. However names should be stored in the GPIO descriptor. We will use gpiochip->names in the future only as initializer for the GPIO descriptors for drivers that assign GPIO names hardcoded. All other GPIO names will be parsed from DT and directly assigned to the GPIO descriptor. This patch adds a helper function to find gpio descriptors by name instead of gpio number. Signed-off-by: Markus Pargmann Signed-off-by: Linus Walleij

gpio: make flags mandatory for gpiod_get functions

2015-07-06T08:39:24+00:00

Now that all[1] users of the gpiod_get functions are converted to make use of the up to now optional flags parameter, make it mandatory which allows to remove some cpp magic. [1] all but etraxfs-uart which is broken anyhow and I'm allowed to ignore it by Jesper Nilsson :-) Acked-by: Alexandre Courbot Signed-off-by: Uwe Kleine-König

Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds

2015-07-02T02:09:11+00:00

Pull LED subsystem updates from Bryan Wu: "In this cycle, we finished to merge patches for LED Flash class driver. Other than that we have some bug fixes and new drivers for LED controllers" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds: (33 commits) leds:lp55xx: fix firmware loading error leds: fix max77693-led build errors leds: fix aat1290 build errors leds: aat1290: pass flags parameter to devm_gpiod_get leds: ktd2692: pass flags parameter to devm_gpiod_get drivers/leds: don't use module_init in non-modular leds-cobalt-raq.c leds: aat1290: add support for V4L2 Flash sub-device DT: aat1290: Document handling external strobe sources leds: max77693: add support for V4L2 Flash sub-device media: Add registration helpers for V4L2 flash sub-devices v4l: async: Add a pointer to of_node to struct v4l2_subdev, match it Documentation: leds: Add description of v4l2-flash sub-device leds: add BCM6358 LED driver leds: add DT binding for BCM6358 LED controller leds: fix brightness changing when software blinking is active Documentation: leds-lp5523: describe master fader attributes leds: lp5523: add master_fader support leds: leds-gpio: Allow compile test if !GPIOLIB leds: leds-gpio: Add missing #include gpiolib: Add missing dummies for the unified device properties interface ...