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authorBen Dooks <ben@simtec.co.uk>2009-11-10 21:01:31 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2009-11-20 00:52:08 -0800
commitbc8f1eaf68a8aa1d993492f1ad2d74502665f578 (patch)
treecadf6c3f31ee6ae8dee14ccd66185faf994d51ff /drivers/input/keyboard/gpio_keys.c
parent111bc59c08c437e433bd5b9cc726adaa912c6e6c (diff)
Input: gpio_keys - seperate individual button setup to make code neater
Move the code that deals with setting up each individual button out into a new function to reduce the indentation and allow us to common up some of the error recovery code. Signed-off-by: Ben Dooks <ben@simtec.co.uk> Signed-off-by: Simtec Linux Team <linux@simtec.co.uk> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input/keyboard/gpio_keys.c')
-rw-r--r--drivers/input/keyboard/gpio_keys.c93
1 files changed, 53 insertions, 40 deletions
diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index b236709a2c01..8941a8ba89bf 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -73,6 +73,57 @@ static irqreturn_t gpio_keys_isr(int irq, void *dev_id)
return IRQ_HANDLED;
}
+static int __devinit gpio_keys_setup_key(struct device *dev,
+ struct gpio_button_data *bdata,
+ struct gpio_keys_button *button)
+{
+ char *desc = button->desc ? button->desc : "gpio_keys";
+ int irq, error;
+
+ setup_timer(&bdata->timer, gpio_keys_timer, (unsigned long)bdata);
+ INIT_WORK(&bdata->work, gpio_keys_report_event);
+
+ error = gpio_request(button->gpio, desc);
+ if (error < 0) {
+ dev_err(dev, "failed to request GPIO %d, error %d\n",
+ button->gpio, error);
+ goto fail2;
+ }
+
+ error = gpio_direction_input(button->gpio);
+ if (error < 0) {
+ dev_err(dev, "failed to configure"
+ " direction for GPIO %d, error %d\n",
+ button->gpio, error);
+ goto fail3;
+ }
+
+ irq = gpio_to_irq(button->gpio);
+ if (irq < 0) {
+ error = irq;
+ dev_err(dev, "Unable to get irq number for GPIO %d, error %d\n",
+ button->gpio, error);
+ goto fail3;
+ }
+
+ error = request_irq(irq, gpio_keys_isr,
+ IRQF_SHARED |
+ IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+ desc, bdata);
+ if (error) {
+ dev_err(dev, "Unable to claim irq %d; error %d\n",
+ irq, error);
+ goto fail3;
+ }
+
+ return 0;
+
+fail3:
+ gpio_free(button->gpio);
+fail2:
+ return error;
+}
+
static int __devinit gpio_keys_probe(struct platform_device *pdev)
{
struct gpio_keys_platform_data *pdata = pdev->dev.platform_data;
@@ -112,52 +163,14 @@ static int __devinit gpio_keys_probe(struct platform_device *pdev)
for (i = 0; i < pdata->nbuttons; i++) {
struct gpio_keys_button *button = &pdata->buttons[i];
struct gpio_button_data *bdata = &ddata->data[i];
- int irq;
unsigned int type = button->type ?: EV_KEY;
bdata->input = input;
bdata->button = button;
- setup_timer(&bdata->timer,
- gpio_keys_timer, (unsigned long)bdata);
- INIT_WORK(&bdata->work, gpio_keys_report_event);
-
- error = gpio_request(button->gpio, button->desc ?: "gpio_keys");
- if (error < 0) {
- dev_err(dev, "failed to request GPIO %d, error %d\n",
- button->gpio, error);
- goto fail2;
- }
- error = gpio_direction_input(button->gpio);
- if (error < 0) {
- dev_err(dev, "failed to configure"
- " direction for GPIO %d, error %d\n",
- button->gpio, error);
- gpio_free(button->gpio);
+ error = gpio_keys_setup_key(dev, bdata, button);
+ if (error)
goto fail2;
- }
-
- irq = gpio_to_irq(button->gpio);
- if (irq < 0) {
- error = irq;
- dev_err(dev, "Unable to get irq number "
- "for GPIO %d, error %d\n",
- button->gpio, error);
- gpio_free(button->gpio);
- goto fail2;
- }
-
- error = request_irq(irq, gpio_keys_isr,
- IRQF_SHARED |
- IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
- button->desc ? button->desc : "gpio_keys",
- bdata);
- if (error) {
- dev_err(dev, "Unable to claim irq %d; error %d\n",
- irq, error);
- gpio_free(button->gpio);
- goto fail2;
- }
if (button->wakeup)
wakeup = 1;