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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-08-27 05:42:33 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-09-15 02:47:34 +0300 |
| commit | 504a33749971c36c54ba5ccb1364872dee1f17a7 (patch) | |
| tree | 46f15d186ca8efd35dd6e420a41195dbe1556fbf /drivers/gpio/gpiolib.c | |
| parent | d079524a33977dc08ea15650a21a1664a7313941 (diff) | |
| download | linux-504a33749971c36c54ba5ccb1364872dee1f17a7.tar.xz | |
ACPI / property: Extend device_get_next_child_node() to data-only nodes
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: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/gpiolib.c')
| -rw-r--r-- | drivers/gpio/gpiolib.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index f43e808a49d9..7d61b506c42f 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -2083,11 +2083,10 @@ struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, &flags); if (!IS_ERR(desc)) active_low = flags & OF_GPIO_ACTIVE_LOW; - } else if (is_acpi_device_node(fwnode)) { + } else if (is_acpi_node(fwnode)) { struct acpi_gpio_info info; - desc = acpi_get_gpiod_by_index(to_acpi_device_node(fwnode), - propname, 0, &info); + desc = acpi_node_get_gpiod(fwnode, propname, 0, &info); if (!IS_ERR(desc)) active_low = info.active_low; } |