Input: gpio-keys - allow setting input device name in DT

Allow specifying name if input device via device tree property. This helps
userspace code to get name and perform proper event to key mapping in some
cases (for example, on Android).

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/Documentation/devicetree/bindings/input/gpio-keys.txt b/Documentation/devicetree/bindings/input/gpio-keys.txt
index cf1333d..2164123 100644 (file)
--- a/Documentation/devicetree/bindings/input/gpio-keys.txt
+++ b/Documentation/devicetree/bindings/input/gpio-keys.txt
@@ -6,6 +6,7 @@ Required properties:
 Optional properties:
        - autorepeat: Boolean, Enable auto repeat feature of Linux input
          subsystem.
+       - label: String, name of the input device.
 
 Each button (key) is represented as a sub-node of "gpio-keys":
 Subnode properties:

diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index b9f01bd..671cdc9 100644 (file)
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -645,6 +645,8 @@ gpio_keys_get_devtree_pdata(struct device *dev)
 
        pdata->rep = !!of_get_property(node, "autorepeat", NULL);
 
+       of_property_read_string(node, "label", &pdata->name);
+
        i = 0;
        for_each_child_of_node(node, pp) {
                enum of_gpio_flags flags;