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authorShubhrajyoti D <shubhrajyoti@ti.com>2010-08-03 19:44:40 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2010-08-03 19:45:31 -0700
commit173bdd746b128241d3d6d202142820692e7dd530 (patch)
tree4586610c9aee7d3689004e03ab0d4ed4e250f32d
parent448cd1664a573e69f54bfd32f3bb7220212b6cf5 (diff)
downloadop-kernel-dev-173bdd746b128241d3d6d202142820692e7dd530.zip
op-kernel-dev-173bdd746b128241d3d6d202142820692e7dd530.tar.gz
Input: gpio_keys - add hooks to enable/disable device
Allow platform code to specify callbcks that will be invoked when input device is opened or closed, allowing, for example, to enable the device. Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
-rw-r--r--drivers/input/keyboard/gpio_keys.c22
-rw-r--r--include/linux/gpio_keys.h2
2 files changed, 24 insertions, 0 deletions
diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index a9fd147..6069abe 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -39,6 +39,8 @@ struct gpio_keys_drvdata {
struct input_dev *input;
struct mutex disable_lock;
unsigned int n_buttons;
+ int (*enable)(struct device *dev);
+ void (*disable)(struct device *dev);
struct gpio_button_data data[0];
};
@@ -423,6 +425,21 @@ fail2:
return error;
}
+static int gpio_keys_open(struct input_dev *input)
+{
+ struct gpio_keys_drvdata *ddata = input_get_drvdata(input);
+
+ return ddata->enable ? ddata->enable(input->dev.parent) : 0;
+}
+
+static void gpio_keys_close(struct input_dev *input)
+{
+ struct gpio_keys_drvdata *ddata = input_get_drvdata(input);
+
+ if (ddata->disable)
+ ddata->disable(input->dev.parent);
+}
+
static int __devinit gpio_keys_probe(struct platform_device *pdev)
{
struct gpio_keys_platform_data *pdata = pdev->dev.platform_data;
@@ -444,13 +461,18 @@ static int __devinit gpio_keys_probe(struct platform_device *pdev)
ddata->input = input;
ddata->n_buttons = pdata->nbuttons;
+ ddata->enable = pdata->enable;
+ ddata->disable = pdata->disable;
mutex_init(&ddata->disable_lock);
platform_set_drvdata(pdev, ddata);
+ input_set_drvdata(input, ddata);
input->name = pdev->name;
input->phys = "gpio-keys/input0";
input->dev.parent = &pdev->dev;
+ input->open = gpio_keys_open;
+ input->close = gpio_keys_close;
input->id.bustype = BUS_HOST;
input->id.vendor = 0x0001;
diff --git a/include/linux/gpio_keys.h b/include/linux/gpio_keys.h
index cd0b3f3..ce73a30 100644
--- a/include/linux/gpio_keys.h
+++ b/include/linux/gpio_keys.h
@@ -17,6 +17,8 @@ struct gpio_keys_platform_data {
struct gpio_keys_button *buttons;
int nbuttons;
unsigned int rep:1; /* enable input subsystem auto repeat */
+ int (*enable)(struct device *dev);
+ void (*disable)(struct device *dev);
};
#endif
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