• Rafael J. Wysocki's avatar
    ACPI / property: Extend device_get_next_child_node() to data-only nodes · 504a3374
    Rafael J. Wysocki authored
    Make device_get_next_child_node() work with ACPI data-only subnodes
    introduced previously.
    Namely, replace acpi_get_next_child() with acpi_get_next_subnode()
    that can handle (and return) child device objects as well as child
    data-only subnodes of the given device and modify the ACPI part
    of the GPIO subsystem to handle data-only subnodes returned by it.
    To that end, introduce acpi_node_get_gpiod() taking a struct
    fwnode_handle pointer as the first argument.  That argument may
    point to an ACPI device object as well as to a data-only subnode
    and the function should do the right thing (ie. look for the matching
    GPIO descriptor correctly) in either case.
    Next, modify fwnode_get_named_gpiod() to use acpi_node_get_gpiod()
    instead of acpi_get_gpiod_by_index() which automatically causes
    devm_get_gpiod_from_child() to work with ACPI data-only subnodes
    that may be returned by device_get_next_child_node() which in turn
    is required by the users of that function (the gpio_keys_polled
    and gpio-leds drivers).
    Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
    Tested-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
    Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
gpiolib.h 5.17 KB